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:
Feb. 21, 2012
Filed:
Jun. 09, 2009
Tsuyoshi Maeda, Kai, JP;
Tsuyoshi Maeda, Kai, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid crystal display device with a vertical alignment mode in which a high image quality and a wide viewing angle are secured includes a liquid crystal layer having an initial state of vertical alignment interposed between a pair of substrates opposite to each other. A plurality of alignment control structures including a dielectric protrusion protruded toward the liquid crystal layer from the inner surface of the substrate is provided in a dot area constituting one unit of display. When that the dielectric constant of the dielectric protrusion is ε, the dielectric constant of a major axis direction of liquid crystal molecules constituting the liquid crystal layer is ε, and the dielectric constant of a minor axis direction thereof is ε, the dielectric constants satisfy the expression ε>ε>ε.