Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-09-29
2000-08-15
Liang, Regina
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 89, 345204, G09G 336
Patent
active
061043664
ABSTRACT:
A driving device is for driving a liquid crystal display in accordance with a display data signal. A shift register circuit produces first through N-th control signals from first through N-th shift output terminals, respectively, in synchronism with the clock signal, where N represents a positive integer greater than one. First through N-th output circuit produces first through N-th gradation voltages in correspondence with the display data signal in synchronism with the first through the N-th control signals, respectively. An additional output circuit produces an additional gradation voltage in correspondence with the display data signal in synchronism with an additional control signal. A connecting circuit connects the additional output circuit to an n-th shift output terminal instead of an n-th output circuit when the n-th output circuit becomes faulty, where n is a variable between one and N, both of inclusive. The connecting circuit supplies the additional output circuit with an n-th control signal as the additional control signal to make the additional gradation voltage as an n-th gradation voltage.
REFERENCES:
patent: 5859627 (1999-01-01), Hoshiya et al.
Liang Regina
NEC Corporation
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