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:
Jan. 14, 2025
Filed:
Jan. 18, 2024
Applicant:
Japan Display Inc., Tokyo, JP;
Inventors:
Assignee:
JAPAN DISPLAY INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); F21V 8/00 (2006.01); G02F 1/13357 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133607 (2021.01); G02B 6/0016 (2013.01); G02B 6/0038 (2013.01); G02B 6/0053 (2013.01); G02F 1/133603 (2013.01);
Abstract
In a backlight that includes a plurality of LEDs and a prism sheet disposed opposite to the LEDs, the prism sheet has a first surface opposite to the LEDs and a second surface on the opposite side of the first surface, a first prism having a first base and a first pitch Lis formed on the first surface, a second prism having a cross section that is scalene triangular in shape having a second base having a length L, a first base angle θ, and a second base angle θsmaller than the first base angle is formed on the second surface, and L<L