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:
Nov. 11, 2014
Filed:
Dec. 14, 2012
Masakazu Kaneoya, Kita-adachi-gun, JP;
Kiyofumi Takeuchi, Kita-adachi-gun, JP;
Seiji Funakura, Kamisu, JP;
Katsunori Shimada, Sakura, JP;
Masakazu Kaneoya, Kita-adachi-gun, JP;
Kiyofumi Takeuchi, Kita-adachi-gun, JP;
Seiji Funakura, Kamisu, JP;
Katsunori Shimada, Sakura, JP;
DIC Corporation, Tokyo, JP;
Abstract
The present invention provides a liquid crystal display device capable of preventing a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and resolving the problem of display defects such as white spots, alignment unevenness, image sticking, and the like. The liquid crystal display device of the present invention is characterized by preventing a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and suppressing the occurrence of display defects such as image sticking and the like, and is thus particularly useful for a VA-mode or PSVA-mode liquid crystal display device for active matrix driving, and can be applied to liquid crystal display devices such as a liquid crystal TV, a monitor, a cellular phone, a smart phone, and the like.