Temperature-dependent overdrive circuit for LCD panel and...

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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Details

C345S087000, C345S098000, C345S204000, C349S072000

Reexamination Certificate

active

07821488

ABSTRACT:
A circuit for overdriving an LCD panel according to an image data and a temperature, and the corresponding are disclosed. The circuit includes: a memory for storing a previous image data; a plurality of LUTs, each coupled to receive the previous image data from the memory and a present image data, for storing overdrive values; a first temperature sensor, for sensing the temperature of a first area of the LCD panel to generate a first temperature data; a control circuit, for generating a selection signal and a temperature correction coefficient according to the first temperature data; a selection circuit, coupled to the plurality of LUTs, for selecting one LUT from the plurality of LUTs according to the selection signal and outputting the overdrive value of the selected LUT; and an overdrive processor, for generating adjusted image data according to the overdrive value and the temperature correction coefficient.

REFERENCES:
patent: 6397021 (2002-05-01), Hayashi et al.
patent: 7106287 (2006-09-01), Ham
patent: 7642999 (2010-01-01), Oura
patent: 2006/0024563 (2006-02-01), Ogura
patent: 2006/0103682 (2006-05-01), Kunimori et al.
patent: 2006/0158415 (2006-07-01), Izumi
patent: 2007/0052643 (2007-03-01), Li et al.

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