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:
Apr. 12, 1983
Filed:
Oct. 01, 1979
Hideaki Kawakami, Mito, JP;
Masaaki Kitazima, Hitachi, JP;
Naoyuki Izaki, Hitachi, JP;
Yoshiharu Nagae, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed is a method of driving a matrix type display panel which includes a phase transition liquid crystal layer sandwiched between a pair of electrode groups arranged in the form of a matrix and including at least one transparent electrode group, and employs intersecting portions of said electrode groups as display segments for displaying information by driving one electrode group with the one-line-at-a-time scanning system; wherein a write-in voltage signal having a sufficient root mean square value for the phase transition of the liquid crystal layer and an erasing voltage substantially equal to OV are employed to drive the panel, and segments just subjected to scanning are applied with the write-in voltage signal when information is written in the segments and are applied with the erasing voltage when information written in the segments is erased.