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US Patent 7646021 Thin film transistor array substrate

Patent 7646021 was granted and assigned to AU Optronics on January, 2010 by the United States Patent and Trademark Office.

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Current Assignee
AU Optronics
AU Optronics
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7646021
Date of Patent
January 12, 2010
Patent Application Number
12402480
Date Filed
March 11, 2009
Patent Primary Examiner
‌
Jack Chen
Patent abstract

A TFT array substrate includes a substrate, a patterned first metallic layer, a patterned stack layer, a patterned dielectric layer, a patterned transparent conductive layer, and a patterned third metallic layer. Elements of each TFT in the TFT array substrate are arranged vertically, so that the TFT array substrate has relatively small fabrication area and is operable with a high conducting current. Further, the storage capacitance can be enhanced by enclosing or sandwiching the second metallic layer with the common lines and the transparent electrodes. In such a way, pixel flashing caused by those coupled signals can be reduced, thus promoting displaying quality thereof.

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