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. 02, 1996
Filed:
Oct. 07, 1994
Teruhiko Tamori, Saitama, JP;
Enix Corporation, Tokyo, JP;
Abstract
An active matrix surface pressure input panel comprises a flexible pressure sheet stacked onto a circuit base plate. The pressure sheet includes a conductive layer and the circuit base plate comprises an insulating plate with first and second groups of intersecting electrode lines and a multiplicity of detection elements formed thereon. Each detection element includes a contact plate coupled to the electrode lines by a switch, such as a thin film transistor or diode, and configured to generate an electrical signal when the overlying portion of the conductive layer contacts the contact plate. The electrode lines are coupled to an electrical circuit that determines the relative location of each electrical signal to map an overall surface pressure distribution. With this configuration, the surface pressure input panel exhibits high definition over a relatively large detection area so that complicated surfaces, such as fingerprints, can be accurately detected and reproduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile