Below is touchscreen Optical Bonding FAQ which will help you understand more about it.
1. What is optical bonding?
Touchscreen Optical bonding is the process of laminating cover glass or touchscreens to the LCD cell. Silicone gel or other adhesive, such a urethane, is inserted between the cover glass and LCD to completely fill the air gap. The assembly is cured in a process that affixes the panels together while solidifying the gel.
2. Why would some products touchscreen need optical bonding?
Protection LCDs have plastic surfaces that are not vandal or weatherproof. To protect your display
investment most LCD installations require a cover glass or polycarbonate lens to protect the LCD.
Clarity & Viewability ‐ Optical bonding eliminates the internal reflection between the LCD and the cover glass or touchscreen because the bonding process creates a single index of refraction. Reducing internally reflected light loss increases display contrast and viewability. Improved display contrast enables displays to be more readily seen in bright ambient conditions, without increasing backlight brightness and the associated unwanted higher power and higher operating temperatures.
Shake & Shock ‐ Optical bonding is an effective means of improving resistance to shake and shock. This benefit is especially useful for military and transportation applications.Dust & Moisture ‐ Filling the gap between the protective glass and LCD keeps out dust and moisture.Condensation or dust can make a display unreadable.
3. Does touchscren optical bonding change a display’s operating temperature range?
No. Optical bonding only alters the surface of the display rather than the components, so the operating
temperature will not change.
4. What applications can benefit from touchscreen optical bonding?
Any display in an outdoor environment or high ambient light conditions can be improved with optical
bonding. Example applications include in‐vehicle displays and digital signage, defibrillators, marine displays and in‐flight entertainment systems.
5. What types of displays can benefit from optical bonding?
Optical bonding can be used on any type of direct view display technology, including AMLCD, plasma, passive LCD, monochrome and transparent electroluminescent, as well as new emerging flat technologies such as OLED (organic light emitting diodes).