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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 9624433 B1

PDFFull Text
Date of Patent:
Apr. 18, 2017

Filed:

Nov. 13, 2013

Liquid crystal display device

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Yoshiyuki Ono, Kita-adachi-gun, JP;

Jouji Kawamura, Kita-adachi-gun, JP;

Yoshinori Iwashita, Kita-adachi-gun, JP;

Hiroyuki Takeda, Sakura, JP;

Assignee:

DIC CORPORATION, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
G02F 1/1333 (2006.01); C09K 19/30 (2006.01); C09K 19/20 (2006.01); C09K 19/42 (2006.01); C09K 19/44 (2006.01); G02F 1/1339 (2006.01); C09K 19/54 (2006.01); C09K 19/04 (2006.01); C09K 19/12 (2006.01); C09K 19/34 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3066 (2013.01); C09K 19/20 (2013.01); C09K 19/42 (2013.01); C09K 19/44 (2013.01); C09K 19/542 (2013.01); G02F 1/1339 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/122 (2013.01); C09K 2019/123 (2013.01); C09K 2019/124 (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 2019/3025 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/548 (2013.01);
Abstract

The present invention relates to a liquid crystal display device including a specific liquid crystal composition and a sealant containing the cured product of a specific curable resin composition. The present invention provides a liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of the liquid crystal layer and an increase in ion density (ID) and which enables elimination of problematic defective display such as voids, uneven alignment, and screen burn-in. Since the liquid crystal display device of the present invention prevents a decrease in the voltage holding ratio (VHR) of the liquid crystal layer and enables a reduction in defective display such as uneven alignment and screen burn-in, it is particularly useful for active-matrix liquid crystal display devices of an IPS mode and FFS mode and can be applied to liquid crystal display apparatuses such as liquid crystal TVs, monitors, mobile phones, and smartphones.

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