Uniform current level control for display panels

Details Uniform current level control for display panels Uniform current level control for display panels

1975-11-10

1977-06-28

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

307297, 315169TV, 340324M, H05B 4114

Patent

active

040328180

ABSTRACT:
A system for driving display panels includes a plurality of MOS integrated circuit chips for each character row in the display panel. Current level control means are provided by the present invention to maintain uniform brightness in all of the character display rows regardless of varying characteristics between the chips driving each row.

REFERENCES:
patent: 3564135 (1971-02-01), Weimer
patent: 3875430 (1975-04-01), Prak
patent: 3896429 (1975-07-01), Moyer et al.
patent: 3943380 (1976-03-01), Morgan et al.
Baitinger et al., Constant-Current Source Network, IBM Technical Disclosure Bulletin, vol. 13, No. 9, Feb. 1971, p. 251b.

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