Touch panel member, touch panel, and touch panel display device
First Claim
1. A touch panel member comprising, in order, at leasta transparent substrate,a transparent electrode, anda protective layer provided so as to cover the transparent electrode and having a thickness of 0.04 to 10 μ
- m,the protective layer being a single-layered structure, the protective layer having a refractive index that decreases continuously from a first surface of the protective layer to a second surface opposite to the first surface, the refractive index of the protective layer is the refractive index within the protective layer,wherein the protective layer is a layer comprising a compound selected from the group consisting of a titanoxane, a zirconoxane, a titanoxane-zirconoxane condensation product, titanium oxide, zirconium oxide, and a titanium-zirconium composite oxide, the compound is dispersed along an entire thickness direction of the protective layer, a content of the compound decreases from the first surface of the protective layer to the second surface opposite to the first surface, and the first surface faces the transparent substrate, andthe protective layer satisfying Expression 1 and Expression 2 below,
|n(electrode)−
n(protect-electrode)|≤
0.2
(1)
0.2≤
n(protect-electrode)−
n(protect-surface)
(2)wherein in the expressions, the refractive index of the transparent electrode is defined as n(electrode), the refractive index of an interface on the transparent electrode side of the protective layer is defined as n(protect-electrode), and the refractive index of an interface, on the side opposite to the transparent substrate, of the protective layer is defined as n(protect-surface).
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Abstract
The object of the present invention is to provide a touch panel member that is excellent in terms of suppression of visibility of a transparent electrode and has low total reflection for visible light, and a touch panel and a touch panel display device having the touch panel member.
The touch panel member of the present invention comprises, in order, at least a transparent substrate, a transparent electrode, and a protective layer provided so as to cover the transparent electrode and having a thickness of 0.04 to 10 μm, at least part of the protective layer having a refractive index that decreases continuously from the transparent substrate side toward the side opposite to the transparent substrate, and the protective layer satisfying specific expressions.
29 Citations
13 Claims
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1. A touch panel member comprising, in order, at least
a transparent substrate, a transparent electrode, and a protective layer provided so as to cover the transparent electrode and having a thickness of 0.04 to 10 μ - m,
the protective layer being a single-layered structure, the protective layer having a refractive index that decreases continuously from a first surface of the protective layer to a second surface opposite to the first surface, the refractive index of the protective layer is the refractive index within the protective layer, wherein the protective layer is a layer comprising a compound selected from the group consisting of a titanoxane, a zirconoxane, a titanoxane-zirconoxane condensation product, titanium oxide, zirconium oxide, and a titanium-zirconium composite oxide, the compound is dispersed along an entire thickness direction of the protective layer, a content of the compound decreases from the first surface of the protective layer to the second surface opposite to the first surface, and the first surface faces the transparent substrate, and the protective layer satisfying Expression 1 and Expression 2 below,
|n(electrode)−
n(protect-electrode)|≤
0.2
(1)
0.2≤
n(protect-electrode)−
n(protect-surface)
(2)wherein in the expressions, the refractive index of the transparent electrode is defined as n(electrode), the refractive index of an interface on the transparent electrode side of the protective layer is defined as n(protect-electrode), and the refractive index of an interface, on the side opposite to the transparent substrate, of the protective layer is defined as n(protect-surface). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- m,
Specification