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:
Aug. 22, 1989
Filed:
May. 26, 1987
Hideo Ichinose, Tokyo, JP;
Shohei Naemura, Tokyo, JP;
NEC Corporation, , JP;
Abstract
An improved ferroelectric liquid crystal light shutter device formed of an array of light shutter elements, each including a ferroelectric liquid crystal exhibiting a chiral smectic phase. The light shutter elements are divided into a plurality of groups for multiplexing in accordance with a predetermined duty ratio. The formerly memorized states of the light shutter elements belonging to one of the groups and the light shutter elements to be addressed in the next scanning sequence are erased. Thereafter, the erased light shutter elements are turned into a memorized 'ON-state' or 'OFF-state' in accordance with image data signals. The formerly memorized states of the light shutter elements other than those which are erased or memorized are maintained by the application of predetermined voltage levels.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile