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:
Apr. 20, 2021
Filed:
Mar. 19, 2019
AU Optronics Corporation, Hsinchu, TW;
Chun-Kuei Wen, Hsinchu, TW;
Hung-Min Shih, Changhua County, TW;
Au Optronics Corporation, Hsinchu, TW;
Abstract
A display device and a shutdown control method thereof are provided. In the display device, a display panel has multiple pixels. A power supply circuit generates a power supply voltage, a gate high voltage and a common voltage according to an input power. A gate driver generates gate scan signals, and a source driver provides source driving signals to drive the display panel. A shutdown detection circuit detects a variation state of voltages values of the power supply voltage, the input voltage and the gate high voltage, and starts a shutdown process when the variation state is a decreasing state. In the shutdown process, the source driver makes the source driving signals to be equal to a reference ground voltage, the gate driver generates the gate scan signals with a high voltage pulse, and the power supply circuit makes the common voltage to be equal to the reference ground voltage.