Touch panel device and display device with touch panel device
First Claim
1. An electrostatic capacitance-type touch panel device, comprising a protective transparent substrate having a viewing-side surface and a display device-side surface, and two polymer films having position-detecting electrode layers and other polymer film, which are located at the display device-side surface of the protective transparent substrate,wherein the protective transparent substrate is a glass substrate;
- wherein a difference between minimum and maximum values of a planar-direction linear expansion coefficient of all polymer films, including said two polymer films having position-detecting electrode layers and said other polymer film, located at the display device-side surface of the protective transparent substrate is 10.0×
10−
6 cm/cm·
°
C. or less andwherein said electrostatic capacitance-type touch panel device comprises, as said other polymer film, a polarizing plate located at the display device-side surface of said protective transparent substrate, and a total retardation of all layers located at the display device side from said polarizing plate is approximately λ
/4 with respect to 550 nm wavelength light.
1 Assignment
0 Petitions
Accused Products
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.
33 Citations
4 Claims
-
1. An electrostatic capacitance-type touch panel device, comprising a protective transparent substrate having a viewing-side surface and a display device-side surface, and two polymer films having position-detecting electrode layers and other polymer film, which are located at the display device-side surface of the protective transparent substrate,
wherein the protective transparent substrate is a glass substrate; -
wherein a difference between minimum and maximum values of a planar-direction linear expansion coefficient of all polymer films, including said two polymer films having position-detecting electrode layers and said other polymer film, located at the display device-side surface of the protective transparent substrate is 10.0×
10−
6 cm/cm·
°
C. or less andwherein said electrostatic capacitance-type touch panel device comprises, as said other polymer film, a polarizing plate located at the display device-side surface of said protective transparent substrate, and a total retardation of all layers located at the display device side from said polarizing plate is approximately λ
/4 with respect to 550 nm wavelength light. - View Dependent Claims (2, 3, 4)
-
Specification