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:
Mar. 28, 2023
Filed:
Apr. 29, 2021
Samsung Electronics Co., Ltd., Suwon-si, KR;
Changju Lee, Suwon-si, KR;
Yongil Kwon, Suwon-si, KR;
Yoon-Kyung Choi, Seongnam-si, KR;
Junho Huh, Yongin-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.