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:
Aug. 02, 2022
Filed:
May. 02, 2019
Applicants:
Panasonic Liquid Crystal Display Co., Ltd., Himeji, JP;
Pasona Knowledge Partner Inc., Osaka, JP;
Inventors:
Yoichi Yasui, Osaka, JP;
Takao Imaoku, Hyogo, JP;
Katsuhiro Kikuchi, Osaka, JP;
Kazuhiko Tsuda, Hyogo, JP;
Assignees:
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., Hyogo, JP;
PASONA KNOWLEDGE PARTNER INC., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1347 (2006.01); G02F 1/1335 (2006.01); G02F 1/13363 (2006.01); G02F 1/1343 (2006.01); G02F 1/1368 (2006.01); G02F 1/137 (2006.01);
U.S. Cl.
CPC ...
G02F 1/1347 (2013.01); G02F 1/137 (2013.01); G02F 1/1368 (2013.01); G02F 1/13363 (2013.01); G02F 1/133504 (2013.01); G02F 1/133528 (2013.01); G02F 1/134309 (2013.01); G02F 1/13706 (2021.01); G02F 1/13712 (2021.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); G02F 1/133562 (2021.01); G02F 1/133567 (2021.01); G09G 2300/023 (2013.01);
Abstract
A liquid crystal display device includes: a first liquid crystal cell; a second liquid crystal cell disposed in a backlight side; and a first optical sheet and a second optical sheet both having an identical layer structure. The first optical sheet is disposed on a front surface side of the first liquid crystal cell and the second optical sheet is disposed on a back surface side of the second liquid crystal cell, or vice versa.