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:
Oct. 17, 1978
Filed:
Mar. 11, 1977
Wales Dale Edwards, Satellite Beach, FL (US);
William Harold White, Indialantic, FL (US);
Harris Corporation, Cleveland, OH (US);
Abstract
A liquid crystal display is multiplexed by the digit input being driven between a first and second voltage level and the segment input being driven between the second and a third voltage level. The difference between the first and third voltage level is sufficient to activate the liquid crystal device. For AC liquid crystal displays, a polarity reversal circuit, driven by a low frequency signal, is included for both the digit input and the segment input to cause the digit input to vary between the second and third voltage level while the segment input varies between the first and second voltage level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile