The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 18, 2017

Filed:

Aug. 25, 2015
Applicant:

Chunghwa Picture Tubes, Ltd., Taoyuan, TW;

Inventors:

Chi-Chung Tsai, Kinmen County, TW;

Yi-Kai Chen, Tainan, TW;

En-Chih Liu, Taoyuan, TW;

Yen-Yu Huang, Taoyuan, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01); G09G 3/20 (2006.01);
U.S. Cl.
CPC ...
G09G 3/2092 (2013.01); G09G 2300/0804 (2013.01); G09G 2300/0871 (2013.01); G09G 2310/0232 (2013.01); G09G 2310/0248 (2013.01); G09G 2310/04 (2013.01); G09G 2310/08 (2013.01);
Abstract

A gate driving circuit is provided. The gate driving circuit includes a plurality of gate driving units sequentially coupled to each other. Each of the gate driving units includes a shift register and a de-multiplexer. The shift register receives a start pulse signal, and generates a first control signal and a second control signal according to the start pulse signal and a scan controlling signal, where when the shift register converts the first control signal into the second control signal, the shift register pulls down a voltage level of the first control signal according to the second control signal. The de-multiplexer receives a part of a plurality of clock signals for generating a plurality of gate signals sequentially according to the first control signal, where the clock signals are enabled sequentially, and enable periods of two sequential clock signals are partially overlapped with each other.


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