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
