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:
May. 08, 2018

Filed:

Dec. 24, 2015
Applicant:

Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, Guangdong, CN;

Inventors:

Li Zhou, Guangdong, CN;

Dan Cao, Guangdong, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 3/00 (2006.01); G02F 1/1345 (2006.01); G02F 1/1368 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3607 (2013.01); G02F 1/1345 (2013.01); G02F 1/1368 (2013.01); G09G 3/006 (2013.01); G09G 2310/027 (2013.01); G09G 2320/0247 (2013.01);
Abstract

The present invention discloses a gamma reference voltage ripple filter circuit and a liquid crystal display, including: a filter module to receive the gamma reference voltage from the gamma reference voltage circuit, filter the gamma reference voltage, and output the filtered gamma reference voltage to a thin film transistor liquid crystal display; a detection module to detect the filtered gamma reference voltage and obtain a detection voltage; a comparison module to compare the detection voltage and obtain a comparison result; and a regulator module to regulate the filter module according to the comparison result, and make the ripple of the filtered gamma reference voltage in a in a default range. The disclosure can stable the voltage difference in the two terminals of the liquid crystal, avoiding the instability of the reversing angle of the liquid crystal to produce flicker phenomenon, affecting the display quality.


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Zhou, Li. (2018). Gamma reference voltage ripple filter circuit and liquid crystal display (U.S. Patent No. 9966020). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9966020

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