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:
Mar. 19, 2013

Filed:

Dec. 23, 2009
Applicants:

Min-cheol Lee, Seoul, KR;

Seung-hwan Moon, Yongin-si, KR;

Inventors:

Min-Cheol Lee, Seoul, KR;

Seung-Hwan Moon, Yongin-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G06F 3/038 (2006.01); G09G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A gate driving device includes a plurality of stages, a first dummy stage connected to the plurality of stages and a second dummy stage connected to the first dummy stage. Stages of the plurality of stages are cascaded. The first dummy stage includes a first charge unit which receives a first input signal from a previous stage of the plurality of stages and is thereby charged, and a first pull-up transistor which outputs a clock signal when the first charge unit reaches a first charge level. The second dummy stage includes a second charge unit which receives a second input signal from the first dummy stage and is thereby charged, and a second pull-up transistor which outputs the clock signal when the second charge unit reaches a second charge level higher than the first charge level.


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