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:
Sep. 10, 2024
Filed:
Mar. 31, 2021
Applicant:
Wuhan China Star Optoelectronics Technology Co., Ltd., Hubei, CN;
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); G02F 1/1333 (2006.01); G02F 1/1334 (2006.01); G02F 1/1335 (2006.01); G06V 40/13 (2022.01);
U.S. Cl.
CPC ...
G02F 1/133603 (2013.01); G02F 1/13338 (2013.01); G02F 1/1334 (2013.01); G02F 1/133512 (2013.01); G02F 1/133605 (2013.01); G02F 1/133607 (2021.01); G06V 40/1318 (2022.01);
Abstract
A backlight module and a liquid crystal display device are provided. The backlight module includes a first optical element which can switch between a transparent state and a scattering state, first light sources, and a light-shielding layer disposed on a light path of light emitted from the first light sources to a liquid crystal display panel. The light-shielding layer includes a plurality of gratings arranged at intervals, each of the gratings is made of a light-shielding material, and one light transmission gap is formed between any two adjacent gratings, thereby improving uniformity of backlight.