Drive circuit for display device

Details Drive circuit for display device Drive circuit for display device

2004-12-22

2010-06-15

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S690000

Reexamination Certificate

active

07737932

ABSTRACT:
A drive circuit for driving a display device includes: a first data latch circuit that holds image data corresponding to one line from; a second data latch circuit that holds image data held in the first data latch circuit; a decoding circuit that decodes the image data held in the second data latch circuit; a gradation amplifier circuit that includes gradation amplifiers that amplify or buffer, and output respective gradation voltages; a gradation voltage selection circuit that selects gradation voltages necessary for display; a decision circuit that decides on use
on-use of gradations, using the image data; and an enabling/disabling circuit that selectively disables operation of the gradation amplifiers corresponding to gradations that are identified as not to be used, using the decision results output from the decision circuit.

REFERENCES:
patent: 5245328 (1993-09-01), Garrett
patent: 5796379 (1998-08-01), Enomoto et al.
patent: 6014122 (2000-01-01), Hashimoto
patent: 2001/0015712 (2001-08-01), Hashimoto
patent: 2002/0039090 (2002-04-01), Saito et al.
patent: 2002-108301 (2002-04-01), None
patent: 2004-271930 (2004-09-01), None

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