G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/133 (2006.01) G02B 27/18 (2006.01) H04N 9/31 (2006.01)
Patent
CA 2201689
A projection-type liquid crystal display device having a light source for emitting a luminous flux; a liquid crystal light valve for modulating the luminous flux emitted by the light source means; a liquid crystal drive circuit for applying the common voltage to the common electrode and the video signal to the source electrode; a projection lens for projecting the luminous flux modulated by the liquid crystal light valve onto a screen; a liquid crystal temperature detector for detecting temperature in the vicinity of the liquid crystal light valve; and a controller. The controller controls the common voltage and/or the source voltage on the basis of values detected by the liquid crystal temperature detector in such a way that fluctuation in the light transmittance of the liquid crystal light valve means is reduced.
Asakawa Katsumi
Ishida Kozo
Ishitani Hiroaki
Sugiura Hiroaki
Tamano Kouhei
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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