The main difference between the two bonding methods is whether there is an air layer between the touch screen and the display. When there is an air layer between the touch screen and the display, the reflectivity of light will increase and the transmittance will decrease due to the difference in refractive index, and the image of the display will not look clear and vivid.

Optical bonding can completely laminate the touch panel and the LCD panel so that there is no air gap between the touch panel and the LCD. This can reduce parallax, decrease the reflection of external light sources, and improve the penetration rate of the backlight. These all contribute to an even better optical solution for LCD monitors.