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:
Feb. 25, 2020
Filed:
Mar. 30, 2018
Applicant:
Panasonic Liquid Crystal Display Co., Ltd., Hyogo, JP;
Inventors:
Naoki Sato, Hyogo, JP;
Ryosuke Yabuki, Hyogo, JP;
Assignee:
Panasonic Liquid Crystal Display Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); G01D 11/28 (2006.01); G04G 9/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/009 (2013.01); G02B 6/0068 (2013.01); G01D 11/28 (2013.01); G04G 9/0041 (2013.01);
Abstract
A display device with at least one hole is susceptible to poor image quality because of the luminance difference between the front of the hole and behind the hole in relation to the plurality of light sources located along one edge of the backlight unit. To decrease the luminance difference, the distance between adjacent light sources are adjusted, the light ray directions are altered and cutout sections are provided.