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:
Nov. 17, 2015
Filed:
Sep. 08, 2011
Koichi Imamura, Chiyoda-ku, JP;
Haruhiko Ito, Chiyoda-ku, JP;
Koki Ikeda, Chiyoda-ku, JP;
TEIJIN CHEMICALS LTD., Tokyo, JP;
Abstract
Provided is a touch panel device which prevents a problem such as generation of Newton's rings even if an air layer between the touch panel device and a display device has a small thickness. This capacitance type touch panel device () includes: a protective transparent base () having an observation-side surface and a display device-side surface; and two polymer films with position detection electrode layers () which are arranged on the display device-side surface of the protective transparent base. The difference between the minimum value and the maximum value of the linear expansion coefficients in the surface direction of all the polymer films () arranged on the display device-side surface of the protective transparent base is 10.0×10cm/cm·° C. or below. Furthermore, the display device with a touch panel device () according to the present invention has such a touch panel device.