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.

Date of Patent:
Nov. 28, 2017

Filed:

Jan. 29, 2014
Applicant:

Sakai Display Products Corporation, Sakai-shi, Osaka, JP;

Inventors:

Takahiro Yoshikawa, Sakai, JP;

Takayuki Nakazawa, Sakai, JP;

Kazuhiko Negoro, Sakai, JP;

Mayumi Hori, Sakai, JP;

Assignee:

Sakai Display Products Corporation, Sakai-shi, Osaka, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/335 (2006.01); G02F 1/1335 (2006.01); G02F 1/1339 (2006.01); F21S 2/00 (2016.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133504 (2013.01); G02F 1/1339 (2013.01); G02F 1/133606 (2013.01); F21S 2/00 (2013.01); G02B 6/0001 (2013.01); G02F 2201/54 (2013.01);
Abstract

Provided is a display device comprising a liquid-crystal panel and an optical sheet member including multiple stacked optical sheets emitting light from a light source toward the liquid-crystal panel, which can alleviate unevenness in light even in the case where, for example, light with such unevenness is emitted from the optical sheet member due to warps or wrinkles generated in the optical sheet member caused by heat generated by the light source. A diffusion sheet is provided between a liquid-crystal panel and an optical sheet member with a gap from the optical sheet member. The light emitted through the optical sheet member is diffused by the diffusion sheet and gap, and then enters the liquid-crystal panel.


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