Detectors & Imaging

LCD TV by Mitsubishi Electric is partially illuminated by laser diodes

Feb. 28, 2011

Mitsubishi Electric, which is already selling a rear-projection laser TV, is now using red laser diodes in one of its edge-lit flat-screen LCD TVs to improve the color gamut.

John Wallace

Tokyo, Japan--Mitsubishi Electric, which is already selling a rear-projection laser TV, is now using red laser diodes in one of its edge-lit flat-screen LCD TVs to improve the color gamut. The red lasers, used along with cyan-emitting LEDs, provide the backlighting. The TV will be commercialized in fiscal 2011 and will be introduced in Japan first, according to Tech-On.

The prototype 46 in. TV has a 126% color gamut gauged by National Television Systems Committee (NTSC) standards. Mitsubishi Electric manufactures the 638-nm-emitting laser diode. It uses several tens of the red laser diode and several hundreds of the cyan LED, according to Tech-On. Specifications of the new TV are "almost the same" as those for Mitsubishi Electric's white-LED backlit TV.

Source: http://techon.nikkeibp.co.jp/english/NEWS_EN/20110217/189679/

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About the Author

John Wallace | Senior Technical Editor (1998-2022)

John Wallace was with Laser Focus World for nearly 25 years, retiring in late June 2022. He obtained a bachelor's degree in mechanical engineering and physics at Rutgers University and a master's in optical engineering at the University of Rochester. Before becoming an editor, John worked as an engineer at RCA, Exxon, Eastman Kodak, and GCA Corporation.