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:
Dec. 03, 2013
Filed:
Feb. 26, 2008
Sumio Utsunomiya, Matsumoto, JP;
Takeshi Koshihara, Suwa, JP;
Sumio Utsunomiya, Matsumoto, JP;
Takeshi Koshihara, Suwa, JP;
Japan Display West Inc., Aichi-Ken, JP;
Abstract
A liquid crystal device includes a liquid crystal panel, a plurality of detection electrodes, a switching circuit, and a position identification device. The liquid crystal panel is configured so that a liquid crystal is sealed in a gap between a first substrate and a second substrate, which are opposed to each other, and a voltage of an opposite electrode opposite the liquid crystal periodically varies. The plurality of detection electrodes are provided on a side opposite to a side on which the liquid crystal is provided via the first substrate, wherein an initial voltage is induced in each of the plurality of detection electrodes on the basis of a variation in voltage of the opposite electrode. The switching circuit sequentially connects each of the plurality of detection electrodes, in which the initial voltages are induced, to a detection portion. The position identification device generates a position signal that indicates a position of a pointing body on the basis of a detection signal produced in the detection portion.