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:
Oct. 28, 2003
Filed:
Jan. 24, 2002
Toshiharu Fukui, Nara, JP;
Hiroshi Moroi, Osaka, JP;
Matsushita Electric Industrial, Co., Ltd., Osaka, JP;
Abstract
A touch panel has excellent visibility and little waviness on respective elements even if the touch panel is exposed in a severe temperature or moisture environment. The touch panel includes an upper electrode sheet and a lower electrode board having respective transparent electrodes face to each other, and both of the sheet and the board are made of respective materials containing an identical main component to each other. In the touch panel, differences in dimensional changes due to the severe environment are restrained so as to be small. Therefore, waviness on the upper electrode sheet and warp of the lower electrode board scarcely occur, and the touch panel can maintain excellent visibility.