US Patent 7432900 Liquid crystal display drive method

Patent 7432900 was granted and assigned to Sony on October, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Sony

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7432900

Patent Inventor Names

Tadaaki Isozaki0

Kenichi Takahashi0

Date of Patent

October 7, 2008

Patent Application Number

11074426

Date Filed

March 8, 2005

Patent Primary Examiner

‌

David L Lewis

Patent abstract

There is provided a liquid crystal display drive method that uses a drive voltage waveform consisting of a display signal period (display waveform 32 bits) and a control signal period irrelevant to display (control waveform 2 bits) in a given time or a period of plural frames or one frame. This method suppresses generation of internal DC voltage and thus prevents impurity ions from deteriorating the quality of displayed pictures.