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:
Mar. 27, 2012
Filed:
Jan. 15, 2010
Takashi Nakajima, Shinagawa, JP;
Nobuyoshi Shimizu, Shinagawa, JP;
Koichi Kondoh, Shinagawa, JP;
Masanobu Hayama, Shinagawa, JP;
Norio Endo, Shinagawa, JP;
Takashi Nakajima, Shinagawa, JP;
Nobuyoshi Shimizu, Shinagawa, JP;
Koichi Kondoh, Shinagawa, JP;
Masanobu Hayama, Shinagawa, JP;
Norio Endo, Shinagawa, JP;
Fujitsu Component Limited, Tokyo, JP;
Abstract
A touch panel includes a lower conductive film, four electrodes disposed in edge portions of four sides of the lower conductive film, and an upper conductive film disposed over the lower conductive film so that the upper and lower conductive films are opposed to each other, to detect an electric potential in the lower conductive film when the upper conductive film is in contact with the lower conductive film. The upper conductive film includes split portions containing no transparent conductive material and split conductive portions divided by the split portions. The touch panel is arranged to detect an electric potential of each of contact points in the split conductive portions when the upper and lower conductive films are brought in contact with each other at the contact points, and detect respective coordinates of the contact points based on the electrical potentials.