Electro-optically addressed flat panel display

Details Electro-optically addressed flat panel display Electro-optically addressed flat panel display

1981-11-02

1984-08-21

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340781, 340719, 250213A, G09G 300

Patent

active

044673256

ABSTRACT:
A flat panel display in which a matrix array of electro-sensitive pixel elements organized in rows and columns are coupled to photosensitive devices such as photoresistors. The photoresistors are in turn coupled to X and Y addressing leads which contain X and Y alphanumeric or graphic information to be displayed in the matrix array. The photoresistors are illuminated with light sources substantially in synchronism with signals present on the X or Y addressing leads. Upon illumination by a scanning light source such as a self-scanning gas discharge device, the photoresistor's resistance drops and permits the information on the X and Y addressing leads to be coupled to the appropriate pixel. Addressing of large flat panel displays using as few as two driver circuits for the X and Y leads and as few as four driver circuits for the self-scanning gas discharge device is thus possible.

REFERENCES:
patent: 2900574 (1959-08-01), Kazan
patent: 3154720 (1964-10-01), Cooperman
patent: 3270206 (1966-08-01), Kazan
patent: 3575634 (1971-04-01), Kohashi
patent: 3940757 (1976-02-01), Purchase
patent: 3947842 (1976-03-01), Hilsum et al.
Electroluminescent Display and Logic Devices, Greenberg Electronics, 3/24/61, pp. 31-35.

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