Low reflection, high transmission, touch-panel membrane
First Claim
1. A low reflective, transparent electrode comprising:
- (a) a sheet of flexible plastic substrate having first and second sides;
(b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate, said first and second hardcoats being anti-glare hardcoats;
(c) an anti-reflective stack adjacent to said first or second hardcoat, said anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
(d) a conductive outer layer adjacent to said anti-reflective stack.
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Accused Products
Abstract
Low reflective, flexible, transparent, laminates having a sheet of flexible plastic substrate, a conductive outer layer on one side of the sheet, and an anti-reflective stack of at least one pair of oxide layers on at least one of the sides of the sheet, adapted for use as touch panel membrane electrodes in screen interface displays. A preferred laminate includes a flexible, polyethylene terephthalate sheet substrate having on one side a outer conductive surface of indium tin oxide and on one or both sides an anti-reflective stack of oxide layers, e.g., a stack of a layer of silicon dioxide and a layer of indium tin oxide. Preferred laminates have at least 90% transmission and less than 2% reflection of visible light in the range of 460 to 700 nm and are especially useful as touch panel electrodes, e.g., on computer display screens.
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Citations
42 Claims
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1. A low reflective, transparent electrode comprising:
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(a) a sheet of flexible plastic substrate having first and second sides;
(b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate, said first and second hardcoats being anti-glare hardcoats;
(c) an anti-reflective stack adjacent to said first or second hardcoat, said anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
(d) a conductive outer layer adjacent to said anti-reflective stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a device where data is entered by pressure activation on the surface of a display screen having a membrane electrode, the improvement wherein said membrane electrode comprises at least one flexible, transparent electrode wherein said flexible transparent electrode comprises:
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(a) a sheet of flexible plastic substrate having first and second sides;
(b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate;
(c) an anti-reflective stack adjacent to said first or second hardcoat, said anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
(d) a conductive outer layer adjacent to said anti-reflective stack.
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12. A low reflective, transparent electrode comprising:
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a) a sheet of flexible plastic substrate having first and second sides;
b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate;
c) a first anti-reflective stack adjacent to said first hardcoat, said first anti-reflective stack comprising at least one pair of layers of materials of different refractive index;
d) a second anti-reflective stack adjacent to said second hardcoat, said second anti-reflective stack comprising at least one pair of layers of materials of different refractive index, said first or said second anti-reflective stack being nonconductive; and
e) a conductive outer layer adjacent to said first anti-reflective stack or said second anti-reflective stack. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. In a device where data is entered by pressure activation on the surface of a display screen having a membrane electrode, the improvement wherein said membrane electrode comprises at least one flexible transparent electrode wherein said flexible transparent electrode comprises:
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a) a sheet of flexible plastic substrate having first and second sides;
b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate;
c) a first anti-reflective stack adjacent to said first hardcoat, said first anti-reflective stack comprising at least one pair of layers of materials of different refractive index;
d) a second anti-reflective stack adjacent to said second hardcoat, said second anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
e) a conductive outer layer adjacent to said first anti-reflective stack or said second anti-reflective stack.
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25. A low reflective transparent electrode comprising:
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a) a sheet of flexible polymeric substrate;
b) a hardcoat adjacent to one side of said polymeric substrate;
c) a first anti-reflective stack adjacent to said hardcoat and a second anti-reflective stack adjacent to said substrate, said first or second anti-reflective stack being nonconductive and said first and second anti-reflective stacks each comprising at least one pair of layers of materials having different refractive index; and
d) a conductive outer layer on said first anti-reflective stack or on said second anti-reflective stack. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. In a device where data is entered by pressure activation on the surface of a display screen having a membrane electrode, the improvement wherein said membrane electrode comprises at least one flexible transparent electrode wherein said flexible transparent electrode comprises;
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a) a sheet of flexible polymeric substrate;
b) a hardcoat adjacent to one side of said polymeric substrate;
c) a first anti-reflective stack adjacent to said hardcoat and a second anti-reflective stack adjacent to said substrate, said first and second anti-reflective stacks each comprising at least one pair of layers of materials having different refractive index; and
d) a conductive outer layer on said first anti-reflective stack or on said second anti-reflective stack.
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40. A low reflective, transparent electrode comprising:
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(a) a sheet of flexible plastic substrate having first and second sides;
(b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate, said first hardcoat being a clear hardcoat and said second hardcoat being an anti-glare hardcoat;
(c) an anti-reflective stack adjacent to said first or second hardcoat, said anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
(d) a conductive outer layer adjacent to said anti-reflective stack.
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41. A low reflective, transparent electrode comprising:
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a) a sheet of flexible plastic substrate having first and second sides;
b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate, said first and second hardcoats being anti-glare hardcoats;
c) a first anti-reflective stack adjacent to said first hardcoat, said first anti-reflective stack comprising at least one pair of layers of materials of different refractive index;
d) a second anti-reflective stack adjacent to said second hardcoat, said second anti-reflective stack comprising at least one pair of layers ,of materials of different refractive index, and e) a conductive outer layer adjacent to said first anti-reflective stack or said second anti-reflective stack.
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42. A low reflective, transparent electrode comprising:
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a) a sheet of flexible plastic substrate having first and second sides;
b) a first hardcoat adjacent to said first side of said substrate and a second hardcoat adjacent to said second side of said substrate, said first hardcoat being a clear hardcoat and said second hardcoat being an anti-glare hardcoat;
c) a first anti-reflective stack adjacent to said first hardcoat, said first anti-reflective stack comprising at least one pair of layers of materials of different refractive index;
d) a second anti-reflective stack adjacent to said second hardcoat, said second anti-reflective stack comprising at least one pair of layers of materials of different refractive index; and
e) a conductive outer layer adjacent to said first anti-reflective stack or said second anti-reflective stack.
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Specification