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AGC self-adhesive glass for optical bonding produces more vivid and clear display devices


AGC (Asahi Glass) announced today that it will release its new self-adhesive glass for optical bonding that bonds directly to display devices used in tablets and other electronic products. The product, which significantly simplifies the process of bonding cover glass directly to display devices, will greatly contribute to the proliferation of more vivid and clear displays. Optical bonding optimizes the refractive index of resin to minimize the loss of light for enhanced visibility. The new product also is suitable for IPS-mode LCDs, of which image quality is prone to be ununiform due to the pressure created when the cover glass is bonded to the LCDs.

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As a technology to improve the display quality of mobile devices and others, bonding cover glass directly to the display is on the verge of gaining wide popularity. Direct bonding realizes high contrast images by minimizing reflection while enhancing image sharpness, but it also has the drawbacks of requiring high-temperature, high-pressure processing and the curing process of the resin. AGC’s new cover glass has enabled the direct bonding of cover glass and display devices without creating a void by using a newly-designed resin for bonding that is set on the bonding surface.
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Any air bubbles that form during the bonding process are automatically absorbed in the resin. Bonding using this product does not require complex processing, such as high-temperature, high-pressure treatment, so processing can be accomplished with a much simpler methodology. Also, the productivity is largely superior to conventional processing methods, and the process is expected to be applied to even larger displays.

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