Interesting....
Mitsubishi Electric Develops 'Laser Backlight LCD TV
http://techon.nikkeibp.co.jp/english...110217/189679/
- Its backlight unit includes two types of light sources: red laser diode and cyan LED.
- The laser is manufactured by Mitsubishi Electric. Its emission wavelength is 638nm.
- The backlight of the prototyped 46-inch LCD TV is the edge-lit type. It uses several tens
of the red laser diode and several hundreds of the cyan LED. Because a laser and an LED have
different divergent angles, Mitsubishi Electric developed an optical system for evenly mixing
lights from them. As a result, the unevenness of color was mitigated, the company said