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:
Jul. 01, 2014
Filed:
Mar. 14, 2008
Kazuto Yamauchi, Okazaki, JP;
Yasunori Murayama, Ichinomiya, JP;
Sadahiko Tanaka, Okazaki, JP;
Keitaro Takizawa, Okazaki, JP;
Kouichi Yamanoue, Yokohama, JP;
Kazuto Yamauchi, Okazaki, JP;
Yasunori Murayama, Ichinomiya, JP;
Sadahiko Tanaka, Okazaki, JP;
Keitaro Takizawa, Okazaki, JP;
Kouichi Yamanoue, Yokohama, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Visteon Japan, Ltd., Kanagawa, JP;
Abstract
An EL emitting touch switch includes first electrodes, a single second electrode facing the first electrodes, and EL layers each sandwiched between a corresponding one of the first electrodes and the second electrode. A light emission driver applies a driving voltage between the first and second electrodes to cause the EL layers to emit light. A timing signal generator generates a timing signal to control the light emission driver such that the application of the driving voltage is stopped at predetermined intervals. Touch decision units are provided for each first electrode. Each touch decision unit includes a feedback circuit for supplying current to the corresponding first electrode such that the potentials of the first and second electrodes become equal to each other, and detects contact of a human body with the corresponding first electrode based on operation of the feedback circuit while the application of the driving voltage is stopped.