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:
May. 05, 2009
Filed:
Apr. 15, 2008
Koji Tanabe, Osaka, JP;
Hirotoshi Watanabe, Osaka, JP;
Koji Tanabe, Osaka, JP;
Hirotoshi Watanabe, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A first resistor layer is formed on the lower surface of a base in film form, and at the same time, a second resistor layer in which particles of different particle diameters are dispersed is formed and layered on the lower surface of the first resistor layer, and thus, a pressure sensitive conductive sheet is formed. In this configuration, the second resistor layer in uneven form makes contact with the fixed contacts in accordance with a pressing force so that electrical connection is made via the second resistor layer and the first resistor layer, and therefore, a thin panel switch with little fluctuation in the resistance value resulting from repeated operation where a stable resistance value can be gained can be realized.