Transflective liquid crystal display
- Transflective liquid crystal display
A transflective liquid crystal display is a liquid crystal display (LCD) that reflects and transmits light (transflective = transmissive + reflective). Under bright illumination (e.g. when exposed to daylight) the display acts mainly as a reflectve display with the contrast being constant with illuminance. Only in dim and dark ambient situations an auxliary transmissive backlight should be provided. When an illuminance sensor is added for control of the backlight, such a transflective LCD can be read over a wide range of illuminance levels. This is why that technique is often found in automotive instrumentation. In portable electronic devices the transflective mode of operation helps to save battery charge, since in bright environments no backlighting is required.
The essential component for a transflective LCD is the "transflector", a polymer sheet that is reflecting and transmitting at the same time.
Trade names
Display manufacturers label their transflective screens under a variety of trade names:
* Boe Hydis: Viewiz
* Motion Computing: View anywhere
See also
*Anti-reflective screen
External links
* [http://www.irontech.com/industrial_LCD_displays_for_sunlight.html Full description of the transflective technology]
* [http://t17.net/transflectiveTFT/ Close up views of transflective pixel structure]
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