Flat panel display device with operator-controlled display

Details Flat panel display device with operator-controlled display Flat panel display device with operator-controlled display

1988-09-01

1991-03-19

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

340700, 340719, G09G 302

Patent

active

050014684

ABSTRACT:
The flat panel display device is organized so as to have, on its front side, a part with dedicated liquid crystals used in back-up mode, a matrix display part with non-dedicated liquid crystals used in normal mode, and a keyboard where the meaning of its keys is displayed by the matrix. Furthermore, the non-dedicated liquid crystal matrix is addressed so as to increase operational safety and displaying speed.

REFERENCES:
patent: 4075621 (1978-02-01), Salmon
patent: 4371870 (1983-02-01), Biferno
patent: 4412214 (1983-10-01), Tanaka et al.
patent: 4481598 (1984-11-01), Ishiwata
patent: 4514920 (1985-05-01), Shafrir et al.
patent: 4524414 (1985-06-01), Kiyokawa
patent: 4567481 (1986-01-01), Meier et al.
patent: 4594572 (1986-06-01), Haubner et al.
patent: 4626851 (1986-12-01), Tooze

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