OCA vs LOCA: How to Choose the Right Lamination Adhesive for TP & LCD Bonding

With the increasing requirements for image quality and durability of industrial control, vehicle-mounted, marine, and intelligent touch devices, the full lamination process of TP touch screens and LCD displays has become the industry standard. At present, mainstream lamination solutions include solid OCA optical adhesive and liquid LOCA optical adhesive, which adapt to different product sizes, structural scenarios and production needs.

OCA (Optical Clear Adhesive) is a prefabricated adhesive film laminated by vacuum pressing. It features uniform adhesive layer, no overflow risk and stable yield rate. It is suitable for standardized mass-produced flat products within 10 inches, widely used in small handheld terminals and consumer tablets. With excellent optical stability, it perfectly fits narrow-border precision structures.

LOCA (Liquid Optical Clear Adhesive) has self-leveling properties, which can effectively compensate for glass flatness errors and ink step differences with higher fault tolerance. It is mainly applied to large screens above 10 inches, special-shaped curved screens and non-standard customized touch screens, including industrial all-in-one machines, outdoor query screens, marine and vehicle-mounted display screens. It supports small-batch customization and after-sales rework with high flexibility.

According to customers' product scenarios, batch demands and service environments, we can accurately match OCA and LOCA lamination processes to ensure the screens feature high light transmittance, anti-glare, anti-fog and shock resistance, comprehensively improving display & touch quality and equipment service life.