Liquid crystal input/output matrix panel

Details Liquid crystal input/output matrix panel Liquid crystal input/output matrix panel

1985-06-17

1987-07-14

Evans, Arthur G.

G06F 302

Patent

active

046799095

ABSTRACT:
Numerous photoelectric translation cells are arranged to correspond to associated picture elements in an active type matrix LCD display system. When a light pen is used as an input means, the system allows detection of light beam positions, enabling it to function as an input means.
The liquid crystal input/output system constructed in this manner has advantages of low power consumption and thin and lightweight construction as compared with conventional input/output systems using a combination of CRT and light pen. It is best suited for applications in portable electronic appliances and offers great technical benefit by arranging the photoelectric translation cells in a manner so as to increase the aperture ratio of the matrix display.

REFERENCES:
patent: 4345248 (1982-08-01), Togashi et al.

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