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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 9809752 B1

PDFFull Text
Date of Patent:
Nov. 07, 2017

Filed:

Jun. 06, 2014

Liquid crystal display device

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Kazuaki Hatsusaka, Kita-adachi-gun, JP;

Hidenari Akiyama, Kita-adachi-gun, JP;

Akira Kimura, Sakura, JP;

Seiji Funakura, Sakura, JP;

Katsunori Shimada, Sakura, JP;

Assignee:

DIC CORPORATION, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian,

Primary Examiner:

Chanceity Robinson

Int. Cl.
CPC ...
G03F 1/00 (2012.01); C09K 19/58 (2006.01); C09K 19/20 (2006.01); C09K 19/54 (2006.01); C09K 19/30 (2006.01); C09K 19/34 (2006.01); C09K 19/14 (2006.01); C09K 19/04 (2006.01); C09K 19/52 (2006.01); G02F 1/137 (2006.01); C09K 19/12 (2006.01); C09K 19/18 (2006.01); C09K 19/32 (2006.01);
U.S. Cl.
CPC ...
C09K 19/588 (2013.01); C09K 19/14 (2013.01); C09K 19/2021 (2013.01); C09K 19/2028 (2013.01); C09K 19/3028 (2013.01); C09K 19/3066 (2013.01); C09K 19/3068 (2013.01); C09K 19/3402 (2013.01); C09K 19/348 (2013.01); C09K 19/3458 (2013.01); C09K 19/54 (2013.01); C09K 19/586 (2013.01); C09K 2019/0437 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/122 (2013.01); C09K 2019/123 (2013.01); C09K 2019/181 (2013.01); C09K 2019/2035 (2013.01); C09K 2019/2042 (2013.01); C09K 2019/2078 (2013.01); C09K 2019/301 (2013.01); C09K 2019/304 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3025 (2013.01); C09K 2019/3027 (2013.01); C09K 2019/3063 (2013.01); C09K 2019/3069 (2013.01); C09K 2019/3083 (2013.01); C09K 2019/323 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/3425 (2013.01); C09K 2019/523 (2013.01); C09K 2219/03 (2013.01); G02F 2001/13793 (2013.01);
Abstract

The present invention relates to a liquid crystal display device that includes a particular color filter containing a material containing chiral liquid crystals and a particular pigment. The present invention provides a liquid crystal display device that can prevent a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and solve the problem of display defects, such as white spots, variations in alignment, and burn-in. Because liquid crystal display devices according to the present invention characteristically prevent a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and reduces the occurrence of display defects, such as burn-in, the liquid crystal display devices are particularly useful as liquid crystal display devices in IPS mode and FFS mode for active-matrix driving and can be applied to household electrical appliances, automobiles, production facilities, measuring and analytical instruments, and communication devices.

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