Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1991-03-22
1992-09-29
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
3151693, 3151694, 340781, 340784, 359 54, G09G 310, G02F 113
Patent
active
051516322
ABSTRACT:
A matrix addressable vacuum fluorescent display has redundant circuitry comprising a row electrode and two sets of column electrodes for each row and column of pixels, respectively, and two sets of FETs separately coupled to row and column electrodes to turn on the phosphor element for a given pixel, each set of FETs supplying part of the phosphor energizing current. If one column electrode or one set of transistors is defective the remaining set is effective to illuminate the phosphor at least to some suitable intensity.
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patent: 4820222 (1989-04-01), Holmberg et al.
patent: 4845489 (1989-07-01), Hormel
Bisotto et al., "Using Redundancy When Designing Active-Matrix-Addressed LCDs", Proc. Soc. Inf. Display, vol. 26, pp. 201-207, 1985.
Castleberry et al., "A 1 Mega-Pixel Color a-Si TFT Liquid Crystal Display", Soc. Info. Display Int. Sympos. Digest, pp. 232-234, 1988.
Matsueda et al., "Defect-Free Active-Matrix LCD with Redundant Poly-Si TFT Circuit", Soc. Info. Display Int. Sympos. Digest, 238-241, 1989.
Nakajima et al., "A 9.5-in. Multicolor TFT-LCD Using a Defect-Tolerant Technology", Soc. Info. Display Int. Sympos. Digest, pp. 234-237, 1989.
Shlesinger & Myers Search Report dated Sep. 25, 1990 (P-1958-90).
General Motors Corporation
LaRoche Eugene R.
Shingleton Michael B.
Simon Anthony Luke
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