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:
Sep. 23, 1980
Filed:
Jul. 10, 1978
Yasuo Sasaki, Kobe, JP;
Displaytek Corporation of Sanko, both of, JP;
Daiwa Shinku Corporation, both of, JP;
Abstract
A controlling unit for a.c. driving an electrostatic device such as an electrostatic display device having a fixed electrode, a resilient sheet electrode and a dielectric layer interposed between the electrodes wherein the sheet electrode is drawn to the outer surface of the fixed electrode to cover the same upon the application of a voltage between the fixed and the sheet electrodes whereas the sheet electrode is kept apart from the fixed electrode upon the removal of the voltage between the electrodes. The controlling unit of this invention includes a resistance in series with an a.c. voltage supply and the electrostatic display device, a triode thyristor switch with a first terminal and a second terminal connected across the fixed and the sheet electrodes, and a switching means for controlling the gate of the thyristor so that the thyristor has an on-off switching function at its leakage current region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile