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:
Jul. 12, 2011
Filed:
Feb. 20, 2007
Masaaki Saitoh, Taki-gun, JP;
Toshihiro Matsumoto, Nara, JP;
Tsuyoshi Okazaki, Nara, JP;
Kazuyoshi Fujioka, Higashiosaka, JP;
Katsuya Ogawa, Matsusaka, JP;
Tohru Sonoda, Tenri, JP;
Masaaki Saitoh, Taki-gun, JP;
Toshihiro Matsumoto, Nara, JP;
Tsuyoshi Okazaki, Nara, JP;
Kazuyoshi Fujioka, Higashiosaka, JP;
Katsuya Ogawa, Matsusaka, JP;
Tohru Sonoda, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a liquid crystal display device which presents display by forming liquid crystal domains that take radially-inclined orientation, persisting display unevenness is prevented from occurring when the panel surface is pressed, thus realizing high-quality displaying. A liquid crystal display device according to the present invention includes a first substrate, a second substrate provided so as to oppose the first substrate, and a vertical-alignment type liquid crystal layer provided therebetween. The liquid crystal display device according to the present invention further includes wall-like structures regularly arranged on the liquid crystal layer side of the first substrate, such that, when a predetermined voltage is applied, the liquid crystal layer forms at least one liquid crystal domain that takes a radially-inclined orientation state in a region substantially surrounded by the wall-like structures. The second substrate includes a protrusion projecting toward the liquid crystal layer in a region corresponding to the liquid crystal domain, and the liquid crystal layer contains a chiral agent. The thickness dof the liquid crystal layer, the natural chiral pitch p of the liquid crystal layer, and the distance dfrom the center of the protrusion to the wall-like structure satisfy the relationships d>p and d/p≧0.15.