IDiyas

For the Inventor, By the Inventor

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.:

US 9939564 B1

PDFFull Text
Date of Patent:
Apr. 10, 2018

Filed:

Feb. 19, 2014

Light-diffusing member, method for manufacturing light-diffusing member, and display device

Applicant:

Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;

Inventors:

Emi Yamamoto, Osaka, JP;

Yuhsuke Tsuda, Osaka, JP;

Tsuyoshi Maeda, Osaka, JP;

Yasushi Asaoka, Osaka, JP;

Shohei Katsuta, Osaka, JP;

Assignee:

Sharp Kabushiki Kaisha, Sakai, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Mustak Choudhury

Int. Cl.
CPC ...
G02B 5/20 (2006.01); F21V 9/06 (2006.01); G02B 5/02 (2006.01); B32B 7/02 (2006.01); G02F 1/1335 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/36 (2006.01); G03F 7/00 (2006.01); G03F 7/20 (2006.01); G03F 7/32 (2006.01); G03F 7/004 (2006.01); G03F 7/038 (2006.01); G03F 7/105 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0294 (2013.01); B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/36 (2013.01); G02B 5/0236 (2013.01); G02B 5/0268 (2013.01); G02B 5/0278 (2013.01); G02F 1/133504 (2013.01); G03F 7/0005 (2013.01); G03F 7/0007 (2013.01); G03F 7/0047 (2013.01); G03F 7/038 (2013.01); G03F 7/105 (2013.01); G03F 7/20 (2013.01); G03F 7/32 (2013.01); B32B 2307/418 (2013.01); G02B 5/0242 (2013.01); G02B 5/0247 (2013.01);
Abstract

This light-diffusing member includes a light-transmissive substrate, a plurality of wavelength-controlling layers formed on one surface of the light-transmissive substrate, and a light-diffusing portion formed on the one surface of the light-transmissive substrate in a region other than a region where the wavelength-controlling layers are formed. The light-diffusing portion includes a light-emitting end-surface that makes contact with the light-transmissive substrate and a light-incident end-surface that is opposite to the light-emitting end-surface and that has an area greater than an area of the light-emitting end-surface, and is made of a photosensitive resin; a height of the light-diffusing portion from the light-incident end-surface to the light-emitting end-surface is greater than a thickness of the wavelength-controlling layers; and the wavelength-controlling layers have characteristics that an optical absorptance at a first wavelength in a ultraviolet wavelength band is higher than an optical absorptance at a second wavelength in a visible-light wavelength band.

Find Patent Forward Citations

Loading…