for outdoor and high ambient light applications
TFT LCDs are susceptible to glare and reflection from either bright light or direct sunlight. This can be dramatically improved by optical bonding.
In almost all displays there is an air gap between the TFT panel and the cover lens. This causes refraction in each level: cover lens, air gap and TFT panel.
Optical bonding is where an optical compound is inserted in the air gap between the cover glass and the TFT LCD, creating a single level of refraction.
By reducing the internal reflection, the contrast and view-ability is increased. This in turn makes the display more readily seen in bright conditions, without the need to increase the brightness and the corresponding higher power consumption.
Optical bonding has many other features making it a popular option, these include:
- Improved sunlight readability
- Reduced reflections and refractions
- Greatly improved durability and ruggedness
- Increased contrast ratios
- Improved resistance to vibration and moisture
- Suitable for harsh temperature environments
- Enhances the backlight performance
- Prevents condensation and other contamination ingress
- High impact absorption
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