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:
Jan. 07, 1997
Filed:
May. 19, 1995
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid crystal apparatus comprises a liquid crystal device having scanning electrodes arranged in a matrix with and spaced apart from signal electrodes with a liquid crystal showing different stable states in accordance with different applied voltages and having a memory function disposed therebetween. First drive circuitry selects and sequentially drives the scanning electrodes by application of a scanning selection signal, and second drive circuitry drives the signal electrodes by application of a writing voltage and a first non-writing voltage corresponding to display contents in synchronism with the application of the scanning selection signal. The first drive circuitry applies reset voltages to the pixels of the liquid crystal to make orientation of the liquid crystal's molecules uniform before the selection of the scanning electrode. The amplitude of a writing voltage applied to an intersection of the selected scanning electrode and a selected signal electrode is two or more times that of a first non-writing voltage applied to an intersection of a nonselected scanning electrode and the selected signal electrode.