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:
Nov. 16, 2021
Filed:
Aug. 21, 2019
Beijing Boe Optoelectronics Technology Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Binhua Sun, Beijing, CN;
Jian Sun, Beijing, CN;
Feng Zi, Beijing, CN;
Feng Pan, Beijing, CN;
Yakun Wang, Beijing, CN;
Ziqiang Guo, Beijing, CN;
Hao Zhang, Beijing, CN;
Lili Chen, Beijing, CN;
Lin Lin, Beijing, CN;
Zhen Tang, Beijing, CN;
Yadong Ding, Beijing, CN;
Bingxin Liu, Beijing, CN;
BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
A backlight source of a backlight module of a display device is divided into N*M regions. A backlight driving device includes: an MCU configured to acquire backlight data about the N*M regions corresponding to a current display image of the display device and transmit the backlight data about the N*M regions to a backlight source driving circuitry in a one-tone manner; and the backlight source driving circuitry including M PWM outputs and N registers corresponding to each PWM output. The N*M registers of the backlight source driving circuitry correspond to the N*M regions respectively. The backlight source driving circuitry is configured to receive backlight data about the N*M regions from the MCU, and write the backlight data about each region into a corresponding register, so as to control luminance of the corresponding region in accordance with the backlight data.