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:
Mar. 25, 1997
Filed:
Mar. 31, 1995
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The active matrix type display apparatus of this invention includes a display medium made of an electro-optical material; a pair of substrates opposing each other with the display medium interposed therebetween; a plurality of pixel electrodes formed in a matrix on one of the substrates; a plurality of row electrodes; a plurality of column electrodes; switching devices each of which is disposed so as to correspond to each of the pixel electrodes, connects the corresponding pixel electrode to the column electrode corresponding to the pixel electrode, and is connected to the row electrode corresponding to the pixel electrode through a control terminal thereof; a row electrode driving circuit for applying a voltage to each of the row electrodes so that the corresponding switching device become conductive only in a row electrode scanning term during a horizontal scanning term assigned to each of the row electrodes; a column electrode driving circuit for alternately applying two kinds of voltages to each of the column electrodes repeatedly at a duty ratio in accordance with a display data corresponding to each of the column electrodes; and voltage switching inhibition element for inhibiting switching of the voltages to be applied to each of the column electrodes by the column electrode driving circuit at least in part of a horizontal scanning term that is not assigned as the row electrode scanning term of any of the row electrodes.