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:
Aug. 10, 2021
Filed:
May. 15, 2018
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong, CN;
Xianming Zhang, Guangdong, CN;
Abstract
A liquid crystal panel driving circuit is provided. The circuit includes a pulse width modulation integrated circuit, including an input terminal, a first resistor, a second resistor, a comparator, a light-emitting diode, a latch, a RC circuit and a power supply voltage. Wherein the input terminal is connected to a ground terminal through the first resistor and the second resistor which are serially connected, a positive input terminal of the comparator is connected to a reference voltage, and a negative input terminal of the comparator is connected between the first resistor and the second resistor, an anode of the light-emitting diode is connected to an output terminal of the comparator, and a cathode of the light-emitting diode is connected to the latch, and an input terminal and an output terminal of the RC circuit are respectively connected to the power supply voltage and the latch.