Transmitting type display device

Details Transmitting type display device Transmitting type display device

1986-11-20

1988-07-26

Birmiel, Howard A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340702, 340784, 340793, 350345, G03B 2114, G02B 2700, G09G 336, G02F 1135

Patent

active

047603895

ABSTRACT:
A transmitting type display device is disclosed, which comprises a transmitting type display panel to provide a display on the front surface, a light source for producing light illuminating the back surface of the transmitting type display and a brightness controller for controlling the intensity of light from the light source. The device comprises an ambient light detector disposed near the transmitting type display panel for detecting the intensity of ambient light incident on the display surface of the transmitting type display panel, and the brightness controller for controlling the light source according to the detection output of the ambient light detector such that the intensity of light from the light source to the transmitting type display panel is increased with an increase of the detected light intensity.

REFERENCES:
patent: 3849979 (1974-11-01), Tanji
patent: 4104627 (1978-08-01), Thuler
patent: 4114366 (1978-09-01), Renner et al.
patent: 4254408 (1981-01-01), Kerschner, III
patent: 4289383 (1981-09-01), Schwarzschild
patent: 4294524 (1981-10-01), Stolov
patent: 4311996 (1982-01-01), Nakamura et al.
patent: 4319237 (1982-03-01), Matsuo et al.
patent: 4502761 (1985-03-01), Knoll et al.
patent: 4644338 (1987-02-01), Aoki

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