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:
Jun. 09, 2020
Filed:
Nov. 06, 2018
Applicant:
Keiwa Inc., Tokyo, JP;
Inventor:
Motohiko Okabe, Tokyo, JP;
Assignee:
KEIWA INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02F 1/1335 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3025 (2013.01); G02B 6/0051 (2013.01); G02B 6/0053 (2013.01); G02B 6/0056 (2013.01); G02F 1/133528 (2013.01); G02F 1/133504 (2013.01); G02F 2001/133567 (2013.01); G02F 2201/50 (2013.01);
Abstract
A polarizer protective sheet includes a base material layer and a light diffusing layer formed on a surface of the base material layer. A plurality of protrusions are formed on an opposite surface of the light diffusing layer from the base material layer, and the protrusions have a substantially arc-shaped section. The average radius of the protrusions is 10 μm or more and 100 μm or less, and the average height of the protrusions is 10 μm or less.