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:
Mar. 24, 2020
Filed:
Nov. 05, 2018
Applicant:
Panasonic Liquid Crystal Display Co., Ltd., Hyogo, JP;
Inventors:
Assignee:
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., Hyogo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02F 1/1347 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133528 (2013.01); G02F 1/1347 (2013.01); G02F 2001/133531 (2013.01); G02F 2001/133548 (2013.01); G02F 2001/133562 (2013.01);
Abstract
A liquid crystal display device includes: a first polarizing plate, a first liquid crystal cell, a second polarizing plate, a third polarizing plate, a second liquid crystal cell, and a fourth polarizing plate, which are arranged from a front side to a back side in this order. P1, P2, P3, P4 represent degrees of polarization of the first polarizing plate, the second polarizing plate, the third polarizing plate, and the fourth polarizing plate, respectively, one of a relational expression of P1>P2, P3, P4, a relational expressions of P4>P1, P2, P3, and a relational expression of P1, P4>P2, P3 is satisfied.