Liquid crystal driving circuit and load driving circuit

Details Liquid crystal driving circuit and load driving circuit Liquid crystal driving circuit and load driving circuit

2008-04-15

2008-04-15

Chang, Kent (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S089000, C345S099000

Reexamination Certificate

active

10895320

ABSTRACT:
There is disclosed a liquid crystal driving circuit configured to supply an analog voltage in accordance with digital grayscale data to each of a plurality of signal lines, said circuit comprising: a reference voltage generation circuit configured to output analog reference voltages corresponding to each of said digital grayscale data; a plurality of buffer amplifiers configured to individually perform buffering of said respective analog reference voltages; a grayscale mode circuit configured to determine a grayscale number of said digital grayscale data based on a grayscale mode signal supplied from the outside; and an amplifier enable circuit configured to set each of said plurality of buffer amplifiers to an enable state or a disable state based on an output signal of said grayscale mode circuit.

REFERENCES:
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patent: 5796379 (1998-08-01), Enomoto et al.
patent: 5999158 (1999-12-01), Sekido et al.
patent: 6014122 (2000-01-01), Hashimoto
patent: 6313830 (2001-11-01), Yusa
patent: 6407729 (2002-06-01), Moon
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patent: 10-326084 (1998-12-01), None
patent: 2000-172225 (2000-06-01), None
patent: 2000-236491 (2000-08-01), None
patent: WO 99/12151 (1999-03-01), None

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