Tag: Huvics

3 Key Cleaning Process Points to Improve Fine Contaminant Particle Removal Efficiency

Cleaning processes in the electronic components industry have been gaining attention for quite some time. In the past, it was often enough to remove visible contaminants, but as semiconductor circuit line widths have narrowed to just a few nanometers, the standards themselves have changed. As process precision increases, the allowable level of contamination decreases, and the role required of cleaning technology continues to expand. Now that how precisely fine contaminant particles can be removed has become a key factor determining product reliability, the depth of cleaning technology has become the depth of competitiveness.

Why a Single Contaminant Particle Can Disrupt Overall Yield

In semiconductor processes, the impact of a single contaminant particle is far more critical than many might expect. According to data from the United States Patent and Trademark Office, even one particle measuring 0.01 micrometers can cause an entire chip to become defective if it comes into contact with a circuit. There is also analysis showing that in advanced processes at the 14 nanometer level, even a particle measuring 7.2 nanometers can ruin a single die.

As circuit line widths become narrower, the allowable contamination threshold also drops. Research in semiconductor manufacturing estimates that 75% of yield loss originates from contamination. This figure shows that the cleaning process is not simply about maintaining cleanliness, but is a core process directly linked to yield. Components with densely arranged fine patterns, such as MLCCs and FPCBs, are even more sensitive to surface contamination. As process environments become more precise, contamination control is becoming a prerequisite rather than an option across the industry.

How Ultrasonic Dispersion Technology Differs from Conventional Cleaning Methods

The limitations of conventional cleaning methods are structurally clear. Manual brushing or spray cleaning can be somewhat effective when component surfaces are broad and structures are simple. However, in cases such as high density substrates, where component spacing is narrow and there are many recessed areas, the cleaning solution may not reach surfaces uniformly, making it easy for contaminants to remain.

Ultrasonic cleaning approaches this problem in a different way. When high frequency sound waves of 20 kilohertz or higher pass through a liquid, countless microbubbles measuring 1 to 200 microns are created, and at the moment these bubbles collapse, pressure of up to about 20,000 psi is concentrated in a small area. Because contaminants are detached without physical contact, no scratches are left on component surfaces. This principle also allows the cleaning effect to be delivered uniformly into narrow gaps and complex internal shapes.

Huvics adds its proprietary dispersion control method to this ultrasonic technology, implementing a multi stage cleaning structure that combines Micro Bubble·Water Jet·Air Knife. Advancing the technology not only to remove contaminants but also to uniformly disperse material particles in a liquid phase is an approach that differs from conventional ultrasonic cleaning.

How Cleaning and Inspection Are Integrated into a Single Flow

If defects remain after cleaning is completed, the issue is discovered not in the cleaning stage, but in the inspection stage. However, when defects are found in the later part of the process, the materials and time already invested cannot be recovered. In environments such as MLCC or FPCB processes, where each component carries a high unit cost and production speed is fast, these losses can accumulate quickly.

The integrated solution from Huvics enables ultrasonic dispersion technology and vision inspection algorithms to operate together within a single process. Because fine pattern defects are detected in real time while cleaning is being performed, defects can be identified in the early stage of the process. Cleaning conditions are optimized for various component types, including camera modules, sensors, VCM motors, and trays, and the drying process is handled continuously through the Oven Dry function.

When particle removal efficiency improves, the defect rate decreases, and when the defect rate decreases, final yield becomes stable. Integrating cleaning and inspection into a single flow rather than keeping them as separate processes is the key to reducing quality variability at the beginning of the process.

The trend toward higher process precision in semiconductors and advanced electronic components will not change going forward. In an environment where a single contaminant particle can disrupt overall yield, cleaning technology can no longer remain a simple post process. The method in which ultrasonic dispersion and real time vision inspection work together within a single process is one practical answer to this shift.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we support customer productivity improvement and
quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-21
Precision Grinding and Multistage Cleaning Core Principles That Determine Stacked Packaging Reliability

Just a few years ago, thickness control in semiconductor packages was measured by whether they were thin enough. But as AI semiconductors and high-performance memory have become mainstream, the more important question has shifted to how uniform they are. As structures that stack chips in multiple layers have become common, even a single thickness deviation has emerged as a variable that can undermine the reliability of the entire package. As stacked structures become more complex, precision machining and cleaning technologies will become even more decisive standards for process quality.

Why Thickness Uniformity Is a Key Quality Variable in Stacked Packaging

In 3D IC packaging structures where chips are stacked vertically, thickness uniformity is not simply a dimensional issue. The solder microbumps that connect the chips between each layer repeatedly contract and expand during thermal cycling, and if there is variation in chip thickness, the stress distribution concentrated on the bumps changes. According to research published on ScienceDirect, thermal cycling tests of 3D IC packaging showed that creep in solder microbumps, plastic deformation caused by high-temperature load, can increase by up to 50%, directly affecting thermomechanical reliability.

The greater the thickness deviation, the more stress becomes concentrated on specific bumps, and package warpage also worsens. As the number of stacked layers increases, the allowable tolerance range for each layer inevitably becomes narrower. When thickness nonuniformity in a single chip accumulates, the flatness of the entire package collapses, leading to bonding defects or electrical shorts in subsequent processes. In the end, thickness variation may not be visible, but it appears directly in the reliability metrics of the final product. As stacked packaging advances, securing thickness uniformity is becoming the starting point of process quality.

Limitations of Conventional Machining Methods and the Role of Precision Grinding Technology

Conventional grinding and chemical mechanical polishing have long been used as standards in semiconductor thinning processes, but their limitations are clear at the level of precision required by advanced packaging. According to an analysis by Eureka PatSnap, conventional grinding and chemical mechanical polishing processes often exceed thickness deviations of ±2μm, falling short of the latest package specifications that require submicron precision. As package types become more diverse, such as FCBGA, WLCSP, and QFN·DFN, and target thickness values vary, it is difficult for a single method to handle all specifications with the same level of precision.

The moment deviation exceeds ±2μm, the package fails to meet the flatness criteria required in the next process, directly leading to yield loss. Micron-level grinding that combines a high-precision stage with a diamond wheel is one approach to closing this gap, and the same analysis shows that it can reduce material waste by 15 to 30% compared with conventional methods. Equipment such as a PKG Grinder, which supports both fully automatic and manual configurations, is designed to secure stable thickness precision in high-speed processes while maintaining production line flexibility. More important than which method is chosen is first defining the target package specification and allowable tolerance, then selecting the machining method that fits them.

How the Cleaning Process Determines Final Quality

If precision machining reduces thickness variation, the cleaning process determines the surface condition before the result moves on to the next stage. For components that require ultra-precision optical and electrical characteristics, such as camera modules or autonomous driving sensors, even a single fine particle left after grinding can result in a defect judgment. In the field, cleaning is often regarded as the last step, but in practice it is the process that determines final quality.

According to research published in MDPI, cleaning solutions containing micro-nano bubbles improve the photoresist removal rate by 30%. A multistage cleaning method that applies Micro Bubble, Water Jet, and Air Knife step by step is structured to separate and discharge contaminant particles at each stage that are difficult to remove with a single method. For parts with complex shapes, such as VCM motors or semiconductor trays, the combination and sequence design of cleaning methods directly affect removal efficiency. When residual moisture is also removed through the Oven Dry process after cleaning, the possibility of secondary contamination in subsequent assembly or inspection processes is reduced.

Lower defect rates and stable yield ultimately come from how precisely the surface is controlled at this cleaning stage. The fact that invisible particles determine the quality of the entire process becomes clear the moment cleaning results are connected to shipping quality.

Reducing defects in semiconductor processes is not a matter of just one step. Package reliability is secured only when two processes work together: precision grinding that controls thickness variation at the micron level, and multistage cleaning that removes surface contaminant particles step by step. In a structure where the precision of each individual process determines the yield and reliability of the final product, which technologies are selected and how they are combined become practical benchmarks of manufacturing competitiveness.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we help customers improve productivity and
secure quality competitiveness.

Huvics Contact

Tel: 031-374-8285
Email: cdpark@huvics.com

2026-09-21
What are the 3 design criteria that improve laminator process stability?

In the semiconductor process, many people still overlook the fact that a single sheet of tape can determine yield. Even a slight deviation in the precision of the lamination process can lead to defects across an entire wafer, and the resulting loss goes far beyond simple rework costs. The quality of the process depends on how accurately the direction of equipment design reflects the needs of the production site.

Process principles and configuration of a laminator system

In the semiconductor packaging process, a laminator handles a sequence of operations that attaches tape to a wafer, controls the adhesion state through UV curing, and then separates the tape after dicing or backgrinding. The reason this process may look simple is that the visible movement is concise, but in reality, micron-level alignment and the maintenance of uniform adhesion are required at the same time.

UV curing adhesives lose adhesion and harden when exposed to ultraviolet light, and this principle makes it possible to separate chips after dicing without damage. A one-stop configuration that evenly expands the tape with an Expander, precisely attaches it to the wafer with a Tape Mounter, and controls the adhesion state through UV Curing is integrated within a single laminator system.

Overall process stability is secured only when each stage does not operate independently but is connected as a continuous flow. If adhesion uniformity breaks down, chip breakage occurs in the subsequent dicing process, and if the UV curing time is inaccurate, separation defects follow. The core premise of a laminator system is that the process must be designed not as a structure where errors accumulate, but as a method that blocks errors at each stage. The process of attaching, curing, and separating tape is implemented as a continuous sequence of precise control.

The shift in UV curing methods began with on-site inconvenience

The change in selection criteria for UV curing methods at production sites began not with advances in equipment technology, but with practical inconvenience in the field. Conventional mercury lamp methods require warm-up time before operation and a cooldown process after operation, which often interrupts process flow. Because they generate a large amount of infrared heat, they pose a risk of thermal damage to heat-sensitive thin-film substrates or electronic components, and this was a variable that on-site engineers had to account for whenever setting process conditions.

The UV LED method starts irradiation immediately when powered on and stops the moment it is turned off, so no warm-up or cooldown is required. As a cold light source, it does not apply heat to the substrate, allowing stable application even to sensitive materials, and according to data from Noble Light, UV LED consumes 30~70% less energy than mercury lamps. In dicing and backgrinding processes, tape adhesion must be reduced quickly to shorten cycle time, and UV LED cold light technology efficiently supports this process.

The Huvics laminator system is configured so that both Lamp and LED methods can be selected, allowing flexible responses according to customer material characteristics and process conditions. Semi Auto and Manual options are also provided, making application possible even on lines with different production scales or automation levels. In a position where mercury lamps were once used as a matter of course, selection criteria have changed as on-site conditions have changed.

Customer feedback from the field changed laminator design

When Huvics designs a laminator system, the first reference point is the problems that actually occur at customer sites. In cases where defects repeatedly occurred in the semiconductor tape bonding process, uneven tape attachment pressure and variations in UV curing time were acting in combination. Replacing a single piece of process equipment alone did not solve the problem, and the approach shifted toward restructuring the entire process from Expander to UV Curing as one continuous flow.

When processes are integrated, contamination and alignment errors that occur during transfer between equipment are reduced, and Tact Time is also shortened. In the wafer lamination process, UV curing can be completed within a few seconds depending on the adhesive type, and when this time is accurately reflected in process design, unnecessary waiting disappears from the overall cycle. To secure both adhesion strength and process stability, curing conditions must remain consistent in every cycle, and the control of irradiation time and illuminance for this purpose becomes a key variable in equipment design.

When customer requirements lead not simply to a specification request but to a redesign of the entire process, the data and know-how gained through that process become the foundation for the next equipment development. Cases in which feedback from the field has substantially changed the structure and options of laminator systems have been steadily accumulated.

Equipment specifications can be checked in a catalog, but the problems those specifications were designed to solve can only be understood in the field. The fact that the laminator system is integrated as one flow from Expander to UV Curing, and the fact that customers can choose between UV Lamp and LED, are the result of specific inconveniences and requirements from customer sites changing the direction of design. The evolution of a process begins not with the technology itself, but with how accurately the context in which that technology is used is understood.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top-tier talent and continuous technological innovation, we support customers in improving productivity and
strengthening quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-20
Key Criteria for Building Automated Equipment to Reduce Semiconductor Process Defects

In the past, the hands and eyes of skilled operators were the key variables that determined quality on semiconductor manufacturing sites. However, as chip integration has increased and package structures have become more complex, the microscopic errors that occur in processes involving human intervention have emerged as issues that can affect overall yield. As process precision requirements have moved below the micron level, manual-centered production methods have gradually begun to reveal their limits. Within this trend, semiconductor automation equipment is becoming not an option, but the starting point of process design.

The Beginning of Process Defects, Automation That Blocks Contaminant Particles

In semiconductor manufacturing processes, many defects begin with contaminant particles that are invisible to the eye. A single fine particle left on the surface of a wafer or package can cause an electrical short or lead to bonding defects. Research on cleaning processes confirms that the mechanical force generated when a PVA brush contacts the surface can effectively remove particles without cross-contamination, even with low-concentration chemical solutions. In this way, the principle of particle removal is not simply the use of detergent, but a combination of physical force and chemical action.

Comparative data showing that error rates appear at 1 to 2% or higher in manual work environments, while they drop to around 0.01% on automated lines, clearly demonstrates how significant this difference is. For components with diverse shapes and materials, such as camera modules, sensors, VCM motors, and trays, maintaining consistent cleaning conditions becomes more difficult, and the more often human hands are involved, the more contamination inflow paths increase. When automation equipment is introduced into the process, these variables can be kept within a controlled range. Across advanced manufacturing sites, there is a growing recognition that blocking the starting point of defects is the first condition for yield management.

How Should the Level of Automation Be Judged for Each Process

Introducing automation equipment does not mean the same method can be applied to every process. Cleaning, lamination, and grinding each require different levels of automation and equipment configurations. A full-auto line can achieve a production speed about twice as fast as a semi-auto line, but it requires large initial capital investment and precise system tuning as a prerequisite. In contrast, the semi-auto method has a lower initial cost burden, but requires continuous manpower input and a separate management system to maintain consistency between processes.

In the cleaning process, a multi-stage method combining Micro Bubble·Water Jet·Air Knife offers higher surface contaminant removal efficiency than a single cleaning method, and when the Oven Dry function is added, the drying process can also be completed in one continuous flow. In the lamination process, equipment configured as a one-stop flow from Expander to UV Curing is advantageous for reducing process steps and shortening takt time. The Cleaner System and Laminator System from Huvics support both Full Auto and Manual options, and are designed to be configured flexibly according to the scale of the production line and product characteristics.

Choosing full auto based only on production speed, or remaining with semi auto based only on cost, can disrupt the balance of the entire process. The key to equipment implementation is to first establish the criteria for deciding what level of automation should be applied to each process.

The Moment Yield Changes, Combining Process Design and Equipment

The effect of automation equipment becomes clearest when it is verified through numbers. According to semiconductor cleaning process research published on ResearchGate, there was a reported case in which process improvement reduced the defect rate from 20% to 5%. This figure shows that changing even one cleaning process can create a meaningful change in yield.

Huvics has a track record of analyzing chronic defect issues that occurred in semiconductor tape bonding processes and resolving them by redesigning the overall process flow. In camera module processes as well, there have been cases where defect rates were reduced by precisely adjusting cleaning conditions, and this was not simply the result of replacing equipment, but of examining the process structure itself.

However, defects do not automatically disappear simply by introducing automation equipment. If you do not review together where contamination occurs in the process, whether the cleaning conditions match product characteristics, and whether there are residual issues after drying, the effect of equipment investment may be reduced. This confirms that automation equipment becomes a practical tool for reducing process defects when equipment selection, process design, and adjustments based on on-site data are carried out together.

As semiconductor manufacturing environments become more complex, reducing process defects is no longer simply a matter of selecting good equipment. Yield begins to change only when you evaluate together where contamination starts in the process, how far the level of automation should be raised, and whether the equipment fits actual production conditions. Whether the process is cleaning, lamination, or grinding, when the starting point is the fact that each process requires a different level of precision and automation method, equipment implementation becomes an investment rather than a cost.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the Semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we support customers in improving productivity and
securing quality competitiveness.

Huvics Contact

Tel: 031-374-8285
Email: cdpark@huvics.com

2026-09-20
What Standards Protect Yield in Semiconductor Cleaning and Lamination Processes?

Cleaning is not the final step of the process. In many production sites, cleaning is often seen as a step that simply wipes things down once at the end, but actual yield data points in the opposite direction. In semiconductor manufacturing, a single contaminant particle only a few micrometers in size left on the surface can disrupt the entire downstream process, and this fact makes the cleaning process not merely a matter of maintaining cleanliness, but the starting point of a quality strategy.

Why the Cleaning Process Determines Yield

The cleaning process accounts for a much larger share of semiconductor manufacturing than many expect. According to MDPI Nanomaterials, the cleaning process takes up about 30% of total production time, and related costs exceed 20% of the overall budget. This does not simply mean it is a time-consuming process. It means cleaning is deeply connected to the overall process flow and quality.

Surface contaminant particles cannot be identified with the naked eye, but they appear as defects in later adhesion, curing, and packaging stages. For this reason, how particles are removed during the cleaning stage effectively determines the final yield.

This is also why microbubbles, or ultrafine bubbles, are attracting attention. When microbubbles collapse, the shock waves and localized high-temperature and high-pressure effects physically separate contaminant particles adhered to the surface. When water jets, or high-pressure water streams, and air knives, or high-speed air flows, are combined in stages, particle removal efficiency increases significantly compared to a single method. By integrating the oven drying process as well, secondary contamination paths caused by residual moisture after cleaning can also be blocked.

In this way, the industry is increasingly recognizing that cleaning is not an act of wiping, but a matter of process design that blocks contamination paths step by step.

The Meaning of Curing Methods in the Lamination Process

In the lamination, or film attachment, process as well, the key quality variable is shifting from how the film is attached to how accurately and how stably it is cured. In the UV curing step that follows tape mounting, or the attachment of tape for fixing semiconductor chips, the choice of light source is not simply a matter of equipment specifications.

Conventional mercury lamp systems require about 15 minutes of warm-up and cool-down cycles before lighting, and they continuously consume power regardless of whether irradiation is being performed. In contrast, UV LED systems can be turned on immediately and use energy only during operation. Energy consumption is reduced by more than 80% compared to mercury lamps, and service life reaches up to 20,000~30,000 hours compared to about 1,000 hours for mercury lamps. A longer replacement cycle reduces the frequency of line stoppages and also lowers maintenance costs.

The Huvics laminator system integrates everything from the expander, or film expansion device, to the tape mounter and UV curing into a single flow, reducing transfer errors and unnecessary waiting time between process stages. Simplifying the process also means blocking, one by one, the paths where defects can occur. Ultimately, how the curing method and integrated process design are selected in the lamination process becomes the basis for determining the operating rate and yield of the entire line.

How to Solve On-Site Challenges: Read the Process First

On-site challenges are not found in standard catalogs. Take the semiconductor tray cleaning process as an example. Tray materials and shapes, types of contaminants, and drying conditions after cleaning vary by customer. Even when the same cleaning equipment is introduced, if the process parameters are not set correctly, surface damage or residual contamination may occur instead.

The same applies to camera module defect rates. Fine particles generated during the lens assembly process often cannot be removed under general cleaning conditions, and increasing cleaning intensity creates a dilemma because it can cause physical damage to the module itself.

Huvics first analyzes the overall manufacturing process of the customer, identifies contamination paths and product characteristics, and then designs the equipment. Reading the process comes before building the equipment. Whether a fully automated, or full-auto, configuration or a manual method is suitable for the line is also determined during this analysis process, and close technical support continues even after equipment delivery.

Whether it is cleaning, lamination, or grinding, what these cases show is that protecting the basic cleanliness of a process ultimately comes down to how deeply the process is understood.

Protecting the fundamentals of a process is the hardest task. Cleaning, lamination, precision grinding — these processes may not carry flashy names, but if these steps become unstable, no advanced technology that follows can perform properly. In semiconductor manufacturing sites, basic cleanliness does not simply mean making things clean. It means the ability to accurately identify the different contamination paths in each process and block them with the right method. That ability protects yield, stabilizes the line, and ultimately determines product reliability.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, mobile, and cosmetics industries.
With top talent and continuous technological innovation, we support improvements in customer productivity and
the securing of quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-19
Building Semiconductor Automation Equipment: Key Step-by-Step Process Essentials from Grinding to Cleaning

“Opportunity comes only to those who are prepared.” This statement by Louis Pasteur applies not only to science laboratories but also directly to advanced manufacturing sites. Now that semiconductor automation equipment implementation has become a key issue, processes entered without preparation struggle to meet the yield and quality standards demanded by the market. Let us examine the specific context of which technical conditions complete readiness on the production floor.

Why the Advanced Packaging Market Demands Automation

As demand for artificial intelligence (AI) semiconductors and high-performance memory surges, the manufacturing environment in advanced industries is being reshaped rapidly. As stacked package methods that vertically stack chips become more common, thickness uniformity and package flatness are no longer added conditions but prerequisites for design.

According to a market analysis released by OEMstron, the advanced packaging market is expected to grow from about 53.1 billion dollars in 2025 to 79.4 billion dollars in 2030, with a compound annual growth rate of 8.4%. In the same trend, the flip chip ball grid array (FCBGA) market is also expected to expand from about 5.355 billion dollars in 2024 to around 10 billion dollars in 2031.

These figures are not simply statistics on market growth. They are also a signal that entering this market is difficult without precise process control. A single package type contains dozens of process variables, and if even one of them moves outside the allowable range, the entire yield becomes unstable. The trend in which automation equipment implementation has become an entry requirement rather than an option is already clear across the market.

Technical Principles of Grinding and Lamination Processes

In semiconductor automation equipment implementation, the order of the process is directly linked to the order of quality. Grinding, lamination, and cleaning and drying must connect as one continuous flow for final yield to remain stable.

The grinding process uniformly reduces package thickness at the micron (μm, one thousandth of 1 mm) level. Using a diamond wheel and a high-precision stage, it supports various package types such as FCBGA, wafer level chip scale package (WLCSP), and quad flat no lead or dual flat no lead (QFN/DFN). Even a small thickness deviation can lead to bonding defects or reduced electrical reliability in later processes, so equipment design that minimizes deviation even in high-speed processing is essential. The Huvics PKG grinder implements this principle in both Full Auto and Manual methods, ensuring flexibility for production lines.

The lamination process simplifies production by handling everything from tape attachment to ultraviolet (UV) curing within a single system. A structure that connects one-stop from the Expander to UV curing reduces transfer time between processes and shortens Tact Time, the time required to complete one product. Academic research has also reported analysis results showing that an automated yield improvement framework can raise efficiency by about 17.6% compared with traditional manual methods. The precision and continuity of each process step ultimately determine the overall yield.

How the Cleaning Process Completes Final Quality

The cleaning process often receives attention last in semiconductor automation equipment implementation, but it is in fact the step that determines final quality. No matter how precisely grinding and lamination are performed, defects can occur in later processes if fine contamination particles remain on the surface. For components that are extremely sensitive to contamination, such as camera modules, vibration control motors (VCM motors), and various sensors, the reliability of the cleaning stage determines shipment quality.

A multi-stage cleaning method that combines Micro Bubble, Water Jet, and Air Knife removes surface contamination particles step by step while minimizing physical impact on the material. According to a study published on ResearchGate, optimizing droplet diameter in a physical cleaning process can achieve a particle removal efficiency of 92.9%.

Actual production sites have also accumulated cases in which defects repeatedly occurring in semiconductor tape bonding processes were resolved simply by redesigning cleaning conditions, as well as cases in which camera module defect rates dropped noticeably after the introduction of precision cleaning. A configuration that integrates oven drying after cleaning also blocks the possibility of secondary defects caused by residual moisture. This confirms that how precisely the final stage of the process is completed gives meaning to the value of all preceding processes.

Semiconductor automation equipment implementation cannot be completed through the excellence of any single process alone. Only when grinding precision, lamination continuity, and cleaning reliability connect as one flow can yield and quality stabilize together. The standards demanded by the market continue to rise, and process design that meets those standards becomes the practical competitiveness of advanced industrial sites.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we support customers in improving productivity and
securing quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-19
How Grinding Process Uniformity Determines AI Semiconductor Packaging Yield

There is one fact that only some people in the semiconductor industry know. The factor that determines the performance of cutting-edge AI chips is not the design or the material, but ‘is hidden in the uniformity of the grinding process’, which is difficult to see with the naked eye. Over time, a yield gap that is difficult to close emerges between sites that understand this fact and those that do not.

Why thickness uniformity and flatness determine yield

In the packaging of AI semiconductors and high-performance memory semiconductors, thickness uniformity and flatness are not simple dimensional requirements. In a 3D stacked structure where chips are stacked vertically, the surface condition of each layer directly determines the bonding quality of the upper and lower layers. According to a technical report by Applied Materials, the uniformity of the wafer surface directly affects stacking yield, reliability, and electrical performance, and even slight surface variations can degrade bonding quality.

As the number of stacked layers increases, these requirements become even stricter. According to industry discussions reported by TrendForce, the current thickness standard for HBM4, fourth-generation high-bandwidth memory, is 775 micrometers, and raising it to the 825~900 micrometer level is being considered for next-generation HBM4E and HBM5. As technology evolves toward stacking more chips higher, how precisely the flatness of each layer is controlled determines the reliability of the entire package.

A single thickness error can distort the path of an electrical signal, and that leads to yield loss. This is why ultra-precision processing becomes a prerequisite, not an option, and standards for equipment that meets these requirements are also rising.

Ultra-precision grinding technology of the PKG Grinder

Huvics PKG Grinder is high-precision grinding equipment designed to respond to these strict standards. By combining a high-precision stage with a diamond wheel, it enables thickness processing at the micron level and can be applied to various package types, including FCBGA, flip chip ball grid array, WLCSP, wafer level chip scale package, QFN·DFN, and solar cells.

What is highly valued on production sites is not only its high precision, but also the fact that it maintains stable quality even in high-speed processes and achieves high yield. Depending on the characteristics of the production line, users can choose from fully automated, Full Auto, A type·B type and Manual types, making it flexible for both high-mix low-volume lines and high-volume continuous production lines. For packages that require micron-level precision, the repeatability of equipment determines yield, and whether that repeatability can be maintained even under high-speed conditions is the key factor in equipment selection.

The relationship between process automation and cost control

On the production floor, the impact of equipment selection on the cost structure is greater than many expect. In the industry, unplanned downtime in semiconductor manufacturing lines is known to cause losses of more than 260,000 dollars per hour, and even the same repair is reported to cost 3~5 times more in an unplanned situation than when handled during scheduled maintenance. This is why equipment stability and maintenance predictability become financial decision criteria beyond simple operational convenience.

The same logic applies to the cleaning process. A method that combines micro bubbles, water jets, and air knives in stages for cleaning various components such as camera modules, sensors, VCM motors, and trays is an approach that removes contamination particles and lowers defect rates in a single process. The laminator system also integrates everything from lamination to UV curing into one flow, reducing process steps and shortening tact time.

The direction of integrating processes and raising the level of automation is ultimately the way to secure both predictable quality and cost control, and its significance is confirmed in the actual numbers from production sites.

The precision requirements for AI semiconductor packaging will continue to rise. In this trend, which equipment is used and how processes are configured determine not only current yield, but also the capability to handle next-generation products. The fact that a single grinding process holds the reliability of the entire package is why precision processing equipment deserves attention in this market.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, mobile, and cosmetics industries.
With top talent and continuous technological innovation, we support customers in improving productivity and
securing quality competitiveness.

Huvics Contact

Telephone: 031-374-8285
Email: cdpark@huvics.com

2026-09-18
Semiconductor Process Defects, Solve Them in 3 Steps: Cleaning, Lamination, and Grinding

Just a few years ago, semiconductor cleaning was considered little more than the ‘finishing step’ of the process. However, as chip integration increases and package structures become more complex, precision processes such as cleaning, lamination, and grinding are emerging as key variables that determine final yield. In semiconductor manufacturing sites, the required precision level for these processes will continue to rise.

Why the Cleaning Process Is the Starting Point of Yield

In semiconductor production lines, the seeds of defects grow where they cannot be seen. A single microscopic contaminant particle remaining on the surface of a wafer or tray can disrupt the yield of the entire subsequent process. This is exactly why cleaning is not simply ‘washing away’.

The micro nanobubble method, which generates fine bubbles of 0.1μm or smaller in water to remove organic matter, effectively separates contaminants while minimizing physical impact on the surface. The principle is that the localized pressure generated when bubbles collapse detaches particles from the surface. When a multi step configuration is added, using Water Jet to push away foreign matter and Air Knife to remove moisture, cleaning efficiency becomes significantly different compared to a single method.

The more contamination sensitive the ultra precision components are, such as camera modules, autonomous driving sensors, and VCM motors, the more clearly the effect of this multi step cleaning appears. The Huvics Cleaner System is equipment configured to apply this multi step cleaning principle to actual mass production environments, and it is equipped with an Oven Dry function to handle the drying process as part of a single flow. This structure reduces the risk of recontamination that can occur when cleaning and drying are separated. Ultimately, the understanding is taking hold in manufacturing sites that cleaning is the starting point of the process and the foundation for quality in all later stages.

Why Precise Control in the Lamination Process Matters

One of the defects that occurs most quietly yet critically in the lamination process is adhesive residue. UV curing tape operates on the principle that its adhesive strength decreases when exposed to ultraviolet light, making it easier to separate chips from the tape after dicing. The problem occurs when sufficient UV energy is not delivered. If curing is incomplete, adhesive remains on the chip surface, and this residue can become a contamination source in subsequent processes or affect electrical characteristics.

On the other hand, excessive UV exposure can cause thermal damage to the tape substrate or the chip itself, making the precision of energy control a key variable that determines process results. The same applies to adhesion uniformity in the Tape Mounting step. If the tape is not evenly attached, the chip can move slightly during dicing, reducing cutting precision.

The Huvics Laminator System processes the steps from Expander to Tape Mounting and UV Curing within a single system, and it is configured to selectively apply two UV methods: Lamp and LED. By integrating process steps, the key is to reduce condition fluctuations that can occur between each step and to maintain stable adhesive strength and curing quality.

In the Era of Stacked Packages, Grinding Precision Determines Performance

As stacked package technology, which stacks chips in multiple layers, becomes more advanced, requirements for thickness uniformity and surface flatness in each layer become stricter. Traditional bump based stacking structures created a gap of about 30μm between dies, but hybrid bonding, which directly connects copper to copper, reduces this gap to nearly 0. As the gap narrows, the allowable range of thickness variation in the grinding process also narrows.

In products that stack dozens of chips, such as AI semiconductors or high performance memory, accumulated thickness variation in one layer can collapse the flatness of the entire package, leading to electrical connection defects. The Huvics PKG Grinder is equipment that uses Diamond Wheel based micron level grinding to uniformly process packages to the thickness required by customers across various package types such as FCBGA, WLCSP, and QFN/DFN. It supports both Full Auto and Manual configurations, securing flexibility for production lines. As stacked structures become denser and packages become thinner, it will become even clearer in future technology competition that grinding precision is a condition that determines the performance and reliability of next generation semiconductors.

Cleaning, lamination, and grinding may appear to be independent processes, but these three steps are connected as one quality chain. Contamination in an earlier step disrupts precision in a later step, and subtle differences in curing conditions determine the reliability of the final chip. Preventing defects in semiconductor processes ultimately comes down to how tightly these invisible connections are managed.

Huvics is an advanced technology company that develops and manufactures automated equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we support improved customer productivity and
secure quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-18
Why Grinding and Cleaning Process Design Learned from Camera Module and Sensor Production Lines Changes Yield

If you discover too late that a thickness deviation of only a few micrometers has occurred during the grinding process, yield loss and rework costs in downstream processes may already have accumulated. Thickness nonuniformity undermines the reliability of the entire chip stacking structure, and once the package is completed, it can lead to defects that are difficult to reverse. If this issue is left unaddressed, it can spread to delivery delays and customer claims, making precise thickness control essential from the very beginning of the process.

Why Thickness Uniformity Matters in Chip Stacking Packaging

As semiconductor packaging technology evolves into 3D stacked structures, maintaining uniform thickness in each chip has emerged as a key factor that determines overall package performance. In structures where multiple chips are stacked vertically, such as high-bandwidth memory, narrower gaps between chips improve signal transmission quality. However, even a slight thickness deviation increases the risk of bonding defects and warpage.

Across the industry, advanced stacked packaging is moving toward wafer thickness targets in the range of 25 to 50 micrometers. This is less than half the thickness of a human hair, requiring a level of precision that cannot even be verified with the naked eye.

As package formats become more diverse, including FCBGA, WLCSP, and QFN/DFN, the thickness standards and tolerances required for each structure also vary. This is why target thickness and machining strategies must be set differently depending on the package type, even within the same grinding process. Ultimately, securing thickness uniformity in chip stacking packaging is not simply a matter of machining precision. It has become a process design issue that determines product reliability and overall yield.

How the Grinding Process Determines Thickness Uniformity

The performance of grinding equipment is evaluated mainly by two factors. One is machining precision, and the other is process stability. A grinding method that combines a high-precision stage with a diamond wheel enables thickness control at the micron level and is advantageous for maintaining uniform flatness across the entire wafer surface.

In WLCSP structures, wafer grinding becomes the core method for reducing the overall package height. In FCBGA structures, the target thickness must be set differently because the package takes advantage of its greater thickness and lower conduction loss. This is why grinding strategies must differ by package type.

To maintain stable quality even in high-speed process environments, the automation level of the equipment becomes an important variable. The Huvics PKG Grinder supports both Full Auto and Manual configurations, allowing flexible response according to the production line type and required yield. The manual method is suitable for low-volume and high-mix production, while the automated method offers strong advantages in minimizing process variation in mass production environments.

The key to yield stability lies in which equipment configuration is selected for the grinding process and how precisely the machining conditions are set for each package type.

Why the Cleaning Process After Grinding Determines Final Quality

The process is not complete even after grinding is finished. If fine particles and surface contaminants generated during grinding are not removed, they become the source of defects in subsequent processes. In manufacturing sites for ultra-precision components such as camera modules and sensors for autonomous driving, where even a single speck of dust is hard to tolerate, companies repeatedly experience yield collapse the moment the cleaning step is omitted. If contaminant particles remain on the bonding surface, they lead to poor electrical contact, and in optical components, they directly cause image quality degradation.

A multistage cleaning method that combines microbubbles, water jets, and air knives step by step removes fine contamination on the product surface in different ways at each stage, securing higher particle removal efficiency than a single cleaning method. After cleaning, a drying process must follow to completely remove residual moisture, and equipment integrated with an oven drying function can handle these two steps within one continuous flow.

Huvics has applied solutions tailored to different contamination conditions and cleaning requirements at each site, including cases involving semiconductor tray cleaning and camera module defect improvement. Since cleaning conditions vary depending on product type and process environment, reviewing both equipment flexibility and site suitability leads to practical quality improvement.

As chips become thinner and stacked structures become more complex, actual yield is determined not only by the precision of grinding and cleaning individually, but by how consistently the two processes are connected as one continuous flow. Minimizing thickness deviation in the initial grinding stage and then finishing the process without contamination in the cleaning stage, only when these two conditions are met together can package reliability be secured. Improving each process individually is not enough. It is necessary to consider the entire flow from grinding to cleaning together from the process design stage.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top talent and continuous technological innovation, we support customer productivity improvement and
quality competitiveness.

Huvics Contact Information

Phone: 031-374-8285
Email: cdpark@huvics.com

2026-09-17
Why Yield Changes When You Follow the 4 Steps of the Semiconductor Cleaning and Drying Process in Order
If you are in charge of designing or improving a semiconductor production line for the first time, you have probably felt uncertain when facing the cleaning process. Which cleaning method should be selected, whether drying can be handled within the same process, and how far the level of automation should go. There is an overwhelming amount of information, but without clear standards it can become even more confusing. It is natural for the cleaning process to feel difficult. From here, let us look at its structure step by step.

Why Cleaning Determines Yield

It is often said that cleaning is important in semiconductor processes, but the impact feels different when the reason is shown in numbers. According to research by CMC Northeastern, 75% of yield loss in semiconductor integrated circuit manufacturing originates from contaminants. If a single microscopic particle settles on the substrate during the exposure process, it can lead to a 5~15% yield loss per batch.

Contaminants begin disrupting the process at sizes invisible to the eye. In ultra-precision component manufacturing sites where surface cleanliness is directly connected to performance, such as camera modules or autonomous driving sensors, this issue becomes even more sensitive. The quality standards required in the automotive electronics industry cannot be met by visual inspection alone. The understanding that the cleaning process is the starting point of yield is now widely established across the industry.

Structure of the 4-Step Cleaning and Drying System

The 4-step cleaning and drying system is structured to apply microbubbles, water jets, air knives, and oven drying in sequence. Each step has a different role.
- Microbubbles lift microscopic contaminants without physical impact on the surface.
- Water jets push away the lifted contaminants.
- Air knives serve as the primary drying step by removing moisture remaining on the surface.
- Oven drying handles the final step by removing residual moisture.
This structure processes cleaning and drying together within one system instead of separating them into different processes. The Huvics cleaner system is designed to integrate these 4 steps into a single line and apply them to cleaning various components such as camera modules, sensors, VCM motors, and trays. Both Full Auto and Manual methods can be selected, allowing the system to be configured according to the automation level and maintenance conditions of the production line.

Practical Effects and Decision Criteria for Automation

The difference between manual cleaning and automated cleaning is not simply a matter of speed. In a case from Alliance Manufacturing, direct cleaning labor time was reduced by about 60% after switching from a manual solvent cleaning method to an automated system. According to an analysis by Zenith Ultrasonics, ultrasonic cleaning can reduce cleaning time by 60~85% compared to traditional methods.

What these figures mean is that the process layout within the production line changes. When the time required for the cleaning process is reduced, there is room to redesign the connection structure with the previous and following processes. However, introducing automation is not equally suitable for every site. Depending on the diversity of production items, batch size, and workforce operation method, there are environments where Manual can be more advantageous than Full Auto.

The reason the Huvics cleaner system is configured to allow selection between the two methods is that it reflects these differences in site-specific conditions. The key to determining which method is right is to first understand the overall flow of the process.

How the cleaning process is configured is ultimately connected to the question of where to begin designing the efficiency structure of the entire production line. The fact that contamination control is a key variable for yield, the possibility of integrating cleaning and drying into one process, and the flexibility to select the automation level according to the site. Only when these three factors are considered together does the direction of the line layout become clear. When what felt difficult at first begins to appear as a structure, the criteria for making decisions also become clearer little by little.

Huvics is an advanced technology company that develops and manufactures automation equipment and
production systems across the semiconductor, LED, Mobile, and Cosmetic industries.
With top-tier talent and continuous technological innovation, Huvics supports customers in improving productivity and
securing quality competitiveness.

Huvics Contact

Phone: 031-374-8285
Email: cdpark@huvics.com
2026-09-17