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.

Patent No.:

US 8368680 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 05, 2013

Filed:

Sep. 30, 2009
Applicants:

Chao-yong Hsu, Changhua, TW;

Ching-hui Ku, Taipei County, TW;

Shin-chung Huang, Taipei County, TW;

Yi-nan Chu, Changhua County, TW;

Lun-ming Chang, Taipei County, TW;

Chia-yi LU, Taoyuan County, TW;

Inventors:

Chao-Yong Hsu, Changhua, TW;

Ching-Hui Ku, Taipei County, TW;

Shin-Chung Huang, Taipei County, TW;

Yi-Nan Chu, Changhua County, TW;

Lun-Ming Chang, Taipei County, TW;

Chia-Yi Lu, Taoyuan County, TW;

Assignee:

Chunghwa Picture Tubes, Ltd., Bade, Taoyuan, TW;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/038 (2006.01);
U.S. Cl.
CPC ...
Abstract

A start protection circuit of a gate driver, which is applied in a liquid crystal display, includes a detection circuit and a switch. The detection circuit monitors a gate low voltage to generate a control signal. The switch is electrically connected to the detection circuit and controlled by the control signal, for transmitting a gate high voltage. The detection circuit outputs the gate low voltage first and monitors if the gate low voltage has reached a predetermined level. When the gate low voltage has reached the predetermined level, the detection circuit turns on the switch to output the gate high voltage.


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