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:
May. 27, 2008
Filed:
Nov. 30, 2004
Ryota Odake, Tokyo, JP;
Toshitaka Kawashima, Kanagawa, JP;
Mitsunori Ueda, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A display apparatus displays information by changing a state of cholesteric liquid crystal with a first driver applying a bipolar voltage to the first electrode, and a second driver for applying a bipolar voltage to the second electrode, the bipolar voltage being of inverted characteristics of the bipolar voltage to be applied to the first electrode. The display apparatus includes a controller controlling the first driver to apply the bipolar voltage to the first electrode a plurality of times in a predetermined period and controlling the second driver to apply to the second electrode the bipolar voltage of the inverted characteristics of the bipolar voltage to be applied to the first electrode, at a same timing as an application of the bipolar voltage to the first electrode, whereby changing a state of cholesteric liquid crystal of a predetermined pixel to a predetermined state.