Source driver of liquid crystal display and the driving method

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United States of America Patent

PATENT NO 7327297
APP PUB NO 20080001800A1
SERIAL NO

11428196

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Abstract

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A source driver has many channels, and each channel has a DAC, a clamp circuit and a fine tune circuit. The DAC selects a first reference voltage and a second reference voltage from a plurality of gamma voltages according to (N-1) most significant bits of an N-bit signal. The clamp circuit receives the two reference voltages and clamps an output voltage between the two reference voltages. The fine tune circuit adjusts the clamped output voltage to a target level according to the least significant bit of the N-bit signal.

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Patent Owner(s)

Patent OwnerAddress
HIMAX TECHNOLOGIES LIMITEDNO 26 ZIH LIAN ROAD FONGHUA VILLAGE SINSHIH TOWNSHIP 74445

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Yaw-Guang Hsinhua, TW 80 170

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