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:
Sep. 16, 1997
Filed:
Nov. 17, 1995
Jun Iwama, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An electro-optical display device in accordance with the present invention has a plurality of picture elements arranged in a matrix form, and each of the picture elements is composed of an electro-optical material layer and a switching element which is electrically connected to the material layer in a series form. A data voltage is written on the electro-optical material layer via the switching element for a writing period. A reference voltage is applied to the other end of a connection to which the data voltage is applied, and the reference voltage is inverted alternately together with the data voltage for each predetermined period, by which the electro-optical material layer is ac driven. The value of the data voltage is controlled to coincide approximately with that of the reference voltage for the periods other than the writing period.