Optical Bonded Touchscreen Displays KYOCERA Optical Bonded Touchscreen Displays offer a wide range of touchscreen variants that feature enhanced screen performance, high contrast, high clarity, and high colour saturation. These touchscreen displays utilise optical bonding technology to affix the LCD panel to the top layer with a UV-curable liquid adhesive. This reduces the internal reflection by up to 70% and eliminates the air gap found in standard tape-bonded applications.