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. 15, 2021
Filed:
Jul. 21, 2020
Applicant:
Japan Display Inc., Tokyo, JP;
Inventors:
Taketoshi Masamoto, Tokyo, JP;
Tetsuro Ochi, Tokyo, JP;
Assignee:
Japan Display Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); F21V 8/00 (2006.01); G02F 1/133 (2006.01); G02F 1/1335 (2006.01); G02F 1/1333 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133606 (2013.01); G02B 6/0025 (2013.01); G02F 1/13306 (2013.01); G02F 1/133305 (2013.01); G02F 1/133504 (2013.01); G02F 1/133528 (2013.01); G02F 1/133603 (2013.01); G02F 1/133615 (2013.01);
Abstract
According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.