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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.:

US 9994772 B1

PDFFull Text
Date of Patent:
Jun. 12, 2018

Filed:

Jul. 14, 2015

Liquid crystal display device

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Takeshi Kuriyama, Kitaadachi-gun, JP;

Jouji Kawamura, Kitaadachi-gun, JP;

Mika Yamamoto, Kitaadachi-gun, JP;

Yasuhiro Kuwana, Kitaadachi-gun, JP;

Assignee:

DIC Corporation, Tokyo, JP;

Attorney:

Locke Lord LLP

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
G02F 1/1333 (2006.01); C09K 19/38 (2006.01); C09K 19/30 (2006.01); C09K 19/34 (2006.01); C09K 19/32 (2006.01); G02F 1/13363 (2006.01); C09K 19/04 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3814 (2013.01); C09K 19/3003 (2013.01); C09K 19/3066 (2013.01); C09K 19/322 (2013.01); C09K 19/3402 (2013.01); G02F 1/13363 (2013.01); G02F 1/133365 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3019 (2013.01); C09K 2019/3021 (2013.01); C09K 2019/3422 (2013.01); G02F 2001/133633 (2013.01); G02F 2001/133638 (2013.01); G02F 2413/01 (2013.01); G02F 2413/02 (2013.01); G02F 2413/11 (2013.01); G02F 2413/13 (2013.01);
Abstract

The present invention provides a liquid crystal display device that is free from a reduction in the voltage holding ratio (VHR) of the liquid crystal layer and an increase in ion density (ID) and that enables problems of defective display, such as white spots, uneven alignment, and image-sticking, to be eliminated. In particular, the present invention provides a liquid crystal display device in which a liquid crystal composition containing a liquid crystal compound having a specific structure is used in the liquid crystal layer and in which an optically anisotropic body formed through polymerization of a polymerizable liquid crystal composition containing a specific amount of a polymerizable liquid crystal compound having a specific structure is used as an in-cell retardation layer.

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