US9271394B2ActiveUtilityA1

Transparent electrode sheet, method for manufacturing transparent electrode sheet, and capacitive touch panel using such transparent electrode sheet

73
Assignee: FUJIFILM CORPPriority: Jan 8, 2011Filed: Jul 17, 2013Granted: Feb 23, 2016
Est. expiryJan 8, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:Akira Ichiki
H05K 3/106H05K 1/03G06F 3/044H05K 2201/0108H05K 2201/0317G06F 2203/04103H05K 2201/032H05K 1/0274G06F 2203/04112G06F 3/0446
73
PatentIndex Score
2
Cited by
27
References
23
Claims

Abstract

A transparent electrode sheet includes a transparent support having thereon patterned electrodes, and an absolute value of a difference between a reflection chromaticity of a surface of the electrode of far side from the transparent support and a reflection chromaticity of a surface of the electrode of near side to the transparent support is not more than 2.

Claims

exact text as granted — not AI-modified
The invention claimed is: 
     
       1. A transparent electrode sheet comprising a transparent support having thereon a patterned electrode, wherein the electrode is made from a metal thin wire having a wire width of not more than 10 μm, and an absolute value of a difference between a reflection chromaticity b 1 * of a surface of the electrode at far side from the transparent support and a reflection chromaticity b 2 * of a surface of the electrode at near side to the transparent support is not more than 2. 
     
     
       2. The transparent electrode sheet as claimed in  claim 1 , wherein the wire width of the metal thin wire is 2 μm or more and not more than 6 μm. 
     
     
       3. The transparent electrode sheet as claimed in  claim 1 , wherein the absolute value of a difference between the reflection chromaticity b 1 * and the reflection chromaticity b 2 * is not more than 1.5. 
     
     
       4. The transparent electrode sheet as claimed in  claim 1 , wherein the absolute value of a difference between the reflection chromaticity b 1 * and the reflection chromaticity b 2 * is not more than 1.0. 
     
     
       5. The transparent electrode sheet as claimed in  claim 1 , wherein the reflection chromaticity b 1 * is 0 or less. 
     
     
       6. The transparent electrode sheet as claimed in  claim 1 , wherein the reflection chromaticity b 1 * and the reflection chromaticity b 2 * satisfy relations of −2.0<b 1 *≦0 and −1.0<b 2 *≦1.0. 
     
     
       7. The transparent electrode sheet as claimed in  claim 1 , wherein the reflection chromaticity b 1 * and the reflection chromaticity b 2 * satisfy relations of −1.5<b 1 *≦−0.3 and −0.7<b 2 *≦0.5. 
     
     
       8. The transparent electrode sheet as claimed in  claim 1 , wherein the reflection chromaticity b 1 * and the reflection chromaticity b 2 * satisfy relations of −1.0<b 1 *≦−0.5 and −0.5<b 2 *≦0.2. 
     
     
       9. The transparent electrode sheet as claimed in  claim 1 , wherein a thickness of the metal thin wire constituting the electrode is 0.1 μm or more and not more than 1.5 μm. 
     
     
       10. The transparent electrode sheet as claimed in  claim 1 , wherein a thickness of the metal thin wire constituting the electrode is 0.2 μm or more and not more than 0.8 μm. 
     
     
       11. The transparent electrode sheet as claimed in  claim 1 , wherein the metal thin wire is formed by a metal material selected from gold, silver and copper. 
     
     
       12. The transparent electrode sheet as claimed in  claim 1 , wherein the electrode is formed by a lattice made from the metal thin wire, and a length of one side of a unit lattice of the lattice is from 50 to 500 μm. 
     
     
       13. The transparent electrode sheet as claimed in  claim 1 , wherein the electrode is formed by a lattice made from the metal thin wire, and a length of one side of a unit lattice of the lattice is from 150 to 300 μm. 
     
     
       14. The transparent electrode sheet as claimed in  claim 1 , wherein the electrode patterned on the transparent support is a layer which is formed by exposing and developing at least one photosensitive layer containing a silver halide emulsion formed on the transparent support, and a volume ratio of silver to a binder contained in the photosensitive layer is 1.0 or more. 
     
     
       15. A capacitive touch panel obtained by using two sheets of the transparent electrode sheet as claimed in  claim 1  and stacking the two sheets via an insulator such that electrode sides of the two electrode sheets face and oppose each other, wherein directions of conduction of the electrodes of the two electrode sheets are substantially orthogonal to each other. 
     
     
       16. A transparent electrode sheet comprising a transparent support having on both surfaces thereof a patterned electrode, wherein the electrode is made from a metal thin wire having a wire width of not more than 10 μm, and an absolute value of a difference between a reflection chromaticity b 1 * of a surface, at far side from the transparent support, of the electrode formed on one surface of the transparent support and a reflection chromaticity b 2 * of a surface, at near side to the transparent support, of the electrode formed on other surface of the transparent support is not more than 2. 
     
     
       17. The transparent electrode sheet as claimed in  claim 16 , wherein the absolute value of a difference between the reflection chromaticity b 1 * and the reflection chromaticity b 2 * is not more than 1.5. 
     
     
       18. The transparent electrode sheet as claimed in  claim 16 , wherein the absolute value of a difference between the reflection chromaticity b 1 * and the reflection chromaticity b 2 * is not more than 1.0. 
     
     
       19. The transparent electrode sheet as claimed in  claim 16 , wherein the reflection chromaticity b 1 * and the reflection chromaticity b 2 * satisfy relations of −2.0<b 1 *≦0 and −1.0<b 2 *≦1.0. 
     
     
       20. The transparent electrode sheet as claimed in  claim 16  wherein a thickness of the metal thin wire constituting the electrode is 0.1 μm or more and not more than 1.5 μm. 
     
     
       21. The transparent electrode sheet as claimed in  claim 16 , wherein the metal thin wire is formed by a metal material selected from gold, silver and copper. 
     
     
       22. The transparent electrode sheet as claimed in  claim 16 , wherein the electrode is formed by a lattice made from the metal thin wire, and a length of one side of a unit lattice of the lattice is from 50 to 500 μm. 
     
     
       23. A touch panel, which comprises the transparent electrode sheet as claimed in  claim 16 .

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