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.

Date of Patent:
Mar. 22, 2011

Filed:

Apr. 24, 2008
Applicants:

Kazuto Yamauchi, Okazaki, JP;

Yasunori Murayama, Ichinomiya, JP;

Sadahiko Tanaka, Okazaki, JP;

Keitaro Takizawa, Okazaki, JP;

Kouichi Yamanoue, Yokohama, JP;

Inventors:

Kazuto Yamauchi, Okazaki, JP;

Yasunori Murayama, Ichinomiya, JP;

Sadahiko Tanaka, Okazaki, JP;

Keitaro Takizawa, Okazaki, JP;

Kouichi Yamanoue, Yokohama, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A touch switch is composed of an EL light emitting layer configured by stacking a fluorescent layer and an insulation layer between first electrodes and a second electrode, a judgment unit for making a judgment on touch manipulation with the first electrode by an operator and an EL driving unit for driving the EL light emitting layer for light emitting, with each of a plurality of first electrodes, each of plurality of fluorescent layers and each of plurality of insulation layers being provided as a set and the second electrode being provided as a single electrode with respect to the plurality of first electrodes, wherein the judgment unit makes a judgment on which of the plurality of first electrodes has been touched by an operator on the basis of a high-frequency component inputted from the second electrode through the first electrode each time the touch switch is touched by an operator.


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