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:
Oct. 25, 1983
Filed:
Dec. 12, 1980
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal color display device including a liquid crystal display cell having a Fredericksz transition effect, and a driving circuit for the display cell. At least one of the opposed electrodes of the liquid crystal display cell is divided into a plurality of electrode members aligned in a row, while the driving circuit supplies driving voltages to the plurality of electrode members corresponding to sound signals, the driving voltages being supplied sequentially having different levels in the order of alignment of the plurality of electrode members. The display device further includes a circuit for lowering the AC power source voltage to bias voltage or a predetermined low voltage level, the AC power source voltage being supplied to a common electrode member formed by the other opposed electrodes of the liquid crystal display cell the power-source voltage applying a potential difference to the liquid crystal, the potential difference being equal to the difference between the driving voltages and the predetermined low voltage.