Source driver of liquid crystal display and the driving method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7327297
APP PUB NO 20080001800A1
SERIAL NO

11428196

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ATTORNEY / AGENT: (SPONSORED)

Importance

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HIMAX TECHNOLOGIES LIMITEDTAINAN COUNTY607

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Yaw-Guang Hsinhua, TW 63 120

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SAMSUNG DISPLAY CO., LTD. (1)
* 7098886 Flat panel display 3 2002
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 2007/0040,773 DATA DRIVER CIRCUITS FOR A DISPLAY IN WHICH A DATA CURRENT IS GENERATED RESPONSIVE TO THE SELECTION OF A SUBSET OF A PLURALITY OF REFERENCE CURRENTS BASED ON A GAMMA SIGNAL AND METHODS OF OPERATING THE SAME 25 2006
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 7030936 Pedestal level control circuit and method for controlling pedestal level 3 2002
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SITRONIX TECHNOLOGY CORP. (2)
* 2010/0309,181 Integrated and Simplified Source Driver System for Displays 0 2009
* 2010/0287,317 Source Driver System Having an Integrated Data Bus for Displays 0 2009
* Cited By Examiner

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