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. 22, 2020
Filed:
Jul. 02, 2019
Applicants:
Beijing Boe Chatani Electronics Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Assignees:
Beijing BOE Chatani Electronics Co., Ltd., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/005 (2013.01); G02B 6/0065 (2013.01);
Abstract
A light guide plate having a main body with a first surface and a second surface opposite the first surface; a first transparent material layer arranged on the first surface and having a plurality of portions recessed towards the first surface, and a second transparent material layer arranged on the second surface and having a plurality of ribbed structures, the difference between the refractive indexes of both of the first and second transparent layers, and the refractive index of the main body, being less than a desired threshold.