Touch panel device and display device with touch panel device
US9189112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Apr 17, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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 (100) includes: a protective transparent base (10) having an observation-side surface and a display device-side surface; and two polymer films with position detection electrode layers (20b, 22; 30b, 32) 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 (20b; 30b) arranged on the display device-side surface of the protective transparent base is 10.0×10−6 cm/cm·° C. or below. Furthermore, the display device with a touch panel device (100, 200, 300) according to the present invention has such a touch panel device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.