EDT Optically Clear CTP
OCA(Optically Clear Adhesive) optical bonding
Common thickness: 150um、175um、200um、250um、500um、800um
EDT Optically Clear CTP
OCR(Optically Clear Resin) optical bonding
What is "Optical Bonding”?
Optical bonding is the process of laminating cover glass or touchscreens to the LCD cell. It is a process that applies a layer of transparent
material such as OCA (Optically Clear Adhesive) or OCR (Optically Clear Resin) between the layers to completely fill the air gap.
The adhesive is completely transparent, the structure and color of the adhesive will not transform through the use of time. Any display in
an outdoor environment or high ambient light conditions can be improved with our matured technology and experience. EDT provides
optical bonding solutions to a wide variety of applications like handheld device for outdoor use, navigation systems, industrial, medical
displays, and ATM equipment, for clear visibility under sunlight or in bright environment.
Optical bonding advantages
Optical bonding has some the following advantages,
(1) Enhanced sunlight readability (~5–10 times, depending on application).
(2) Increased impact resistance (~3–8 times, depending on the bonded cover glass).
(3) High shock and vibration tolerance.
(4) Very low reflectance for touch screens in desired applications.
(5) Greatly enhanced life by protecting the display materials from the humidity.
(6) High-quality optical bonding of performance-enhancing auxiliary components, such as AR, AG, AR/AG/hard coat/anti-smudge
and heater glasses, touch screens, and UV, EMI, and sunlight filters.
Examples
(1) For air gap structure with AR(R1=0.5%), the total specular reflectance is 8.5%, the CR can be calculated below, and it should be
larger than the structure without AR.
(2) For optical bonding(R2+3=0.2%) structure without AR, the total specular reflectance is 4.2%, the CR can be calculated below,
Solar Radiation
Many outdoor products using optically bonded capacitive touchscreen displays are routinely exposed to solar radiation (sunlight). However, long-term exposure to sunlight may cause yellowing, cracking or bubbling of the optical bonding material between the capacitive touchscreen and the display. Our solutions are enhanced to extend the lifespan of optically bonded capacitive touchscreen displays placed in outdoor settings prone to solar radiation.
Test Specification
Applications:
Outdoor kiosks
Interactive digital signage
Port facility systems
Vehicle or marine systems
EV Charging Stations
Fuel Pumps
Other devices requiring resistance to prolonged sunlight exposure