OCA bonding is the full lamination of cover lens or touch panel to TFT LCDs. It is one of the technologies that fully bonding The LCM and touch panels or cover glass together by solid transparent optical clear adhesive or liquid transparent optical adhesive. Comparing with the traditional air/DST bonding, OCA bonding could well eliminate the air gap between LCM and touch panel or cover lens.
DST Air Bonding VS Optical OCA Bonding
Benefits of Optical OCA Bonding
1)Enhancing the display performance.The interlayer reflection is lower by OCA bonding technology. Therefore it could reduce the interference of ambient light reflection and increase the LCM light transmittance. The images contrast ratio would be strengthen accordingly as well.
2)By the full lamination OCA bonding, it eliminates the air gap between cover lens or touch panel and the TFT LCD displays. Therefore no dust or moisture would appear inside the air gap. Dust among the gap is the most common drawback for DST air bonding method. OCA bonding could perfectly avoid the issue and improve the user experience greatly.
3)The integraty of the assembled display by OCA bonding ensures the durability and ruggedness.
4)Optical OCA bonding technology ensures the structural integrity, design flexibility, and functional and aesthetic properties, etc
As optical OCA bonding technology has evolved into the mainstream. More and more electronic devices now are adtoping OCA bonding of protective cover glass or touch panel. And the bonding process is being employed on larger screens (touch and cover glass) in a wider range of applications, including medical devices, point of sale terminal, GPS system, industrial control applications, automotive displays, vehicle testing devices, etc.
