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:
Jun. 02, 2009
Filed:
Nov. 18, 2005
Koji Moriya, Kanagawa, JP;
Koji Moriya, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-Ken, JP;
Abstract
The present invention provides a liquid crystal electro-optical device that response time is short and voltage holding rate is not lowered. One feature of the invention is a first substrate, a first electrode over the first substrate, a first orientation film covering the first electrode, and a second substrate opposed to the first substrate and provided with a second electrode, a second orientation film covering the second electrode, a liquid crystal layer interposed between the first and the second substrates, wherein the liquid crystal layer is formed of a mixture of a nematic liquid crystal and a liquid crystal having a smectic phase, wherein a ratio of a liquid crystal having a smectic phase in the mixture is 20 weight % or less, and wherein an arithmetic average of rise response time and fall response time of a plurality of liquid crystal molecules in the mixture is 8 msec or less.