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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 9593280 B1

PDFFull Text
Date of Patent:
Mar. 14, 2017

Filed:

Jun. 18, 2013

Liquid crystal display device

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Takeshi Kuriyama, Kita-adachi-gun, JP;

Jouji Kawamura, Kita-adachi-gun, JP;

Seiji Funakura, Kamisu, JP;

Isao Oshiumi, Tokyo, JP;

Katsunori Shimada, Sakura, JP;

Assignee:

DIC CORPORATION, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Shean C Wu

Int. Cl.
CPC ...
C09K 19/20 (2006.01); C09K 19/30 (2006.01); C09K 19/54 (2006.01); G02F 1/1335 (2006.01); G02F 1/137 (2006.01); C09K 19/56 (2006.01); C09K 19/44 (2006.01); C09K 19/04 (2006.01); C09K 19/12 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3066 (2013.01); C09K 19/20 (2013.01); C09K 19/44 (2013.01); C09K 19/56 (2013.01); G02F 1/137 (2013.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); C09K 19/54 (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 2019/3075 (2013.01); C09K 2019/548 (2013.01);
Abstract

There is provided a liquid crystal display device that may limit a reduction in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in the ion density (ID) in the liquid crystal layer and thereby address issues of faulty display such as white missing pixels, alignment inconsistencies, and burn-in. The liquid crystal display device according to the present invention, which may limit a reduction in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in the ion density (ID) in the liquid crystal layer and thereby reduce the risk of faulty display such as burn-in, can be suitably used, in particular, as an IPS-mode or FFS-mode liquid crystal display device for active-matrix driving and may also be used as a liquid crystal display device for liquid crystal display televisions, monitors, mobile phones, smart phones, or the like.

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