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:
Oct. 12, 2021
Filed:
Nov. 27, 2019
Applicant:
Keiwa Inc., Tokyo, JP;
Inventors:
Chengheng Tsai, Taipei, TW;
Masayuki Sukigara, Tokyo, JP;
Motohiko Okabe, Tokyo, JP;
Takahiro Tsuji, Tokyo, JP;
Assignee:
KEIWA INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); G02B 5/02 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133606 (2013.01); G02B 5/0278 (2013.01); G02F 1/133607 (2021.01);
Abstract
A multilayer of light diffusers includes the light diffusers layered one on top of another, and an air layer between adjacent light diffusers. Each of the light diffusers contains a light diffusing agent in a resin matrix. An example of the resin matrix is an aromatic polycarbonate, and an example of the light diffusing agent is a silicone-based diffusing agent.