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:
Jul. 11, 1978
Filed:
Nov. 29, 1976
Michael N Ernstoff, Los Angeles, CA (US);
Hughes Aircraft Company, Culver City, CA (US);
Abstract
A flat panel liquid crystal display system formed by sandwiching a thin layer of liquid crystal material between a front electrode structure, split into rows or columns, and a back electrode structure formed into desired patterns and including addressing circuitry is described. Single polarity operation of a liquid crystal display system in which the direction of current flow in the liquid crystal material is reversed at the frame rate is a feature of the invention. Operation is accomplished so as to permit gray scale rendition as response to an applied video signal. Addressing circuitry demonstrating the applicability of large scale integration (LSI) techniques is also an important element of the invention.