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.:
Date of Patent:
Oct. 06, 2020
Filed:
Jan. 04, 2018
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Abstract
A gamma reference voltage generating circuit comprises a first gamma reference voltage generating module and a second gamma reference voltage generating module. The first gamma reference voltage generating module is configured to receive a source voltage signal, amplify the source voltage signal to obtain a first gamma reference voltage signal, and output the first gamma reference voltage signal to a source driving circuit. The second gamma reference voltage generating module is configured to receive the source voltage signal, step down the source voltage signal to obtain a second gamma reference voltage signal, and divide a current on the second gamma reference voltage generating module into two output currents and transmit the two output currents to the source driving circuit, or buck chop the source voltage signal to obtain the second gamma reference voltage signal and transmit the second gamma reference voltage signal to the source driving circuit.