US2021149509A1PendingUtilityA1

Conductive film, touch panel sensor, and touch panel

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Assignee: FUJIFILM CORPPriority: Sep 12, 2016Filed: Dec 21, 2020Published: May 20, 2021
Est. expirySep 12, 2036(~10.1 yrs left)· nominal 20-yr term from priority
Inventors:Akiko HattoriAkihiko Ohtsu
G06F 3/0446G06F 3/0448G06F 2203/04111G06F 3/04164G06F 3/0445G06F 2203/04103G06F 2203/04112G06F 3/041H01B 5/14G06F 3/044
59
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Claims

Abstract

An object of the invention is to provide a conductive film having excellent visibility. Another object of the invention is to provide a touch panel sensor and a touch panel. A conductive film according to the embodiment of the invention includes a substrate and a conductive portion which is disposed on the substrate and composed of thin metal wires having a line width of 0.5 μm or greater and less than 2 μm, the thin metal wires form a mesh pattern, a line width L μm of the thin metal wires and an opening ratio A % of the mesh pattern satisfy a relationship represented by Formula (I), and a reflectivity of the thin metal wires at a wavelength of 550 nm is 80% or less. Formula (I): 70≤A<(10−L/15) 2

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A conductive film comprising:
 a substrate; and   a conductive portion which is disposed on the substrate and composed of thin metal wires having a line width of 0.5 μm or greater and less than 2 μm,   wherein the thin metal wires form a mesh pattern,   a line width L μm of the thin metal wires and an opening ratio A % of the mesh pattern satisfy a relationship represented by Formula (I),
   70≤ A <(10− L/ 15) 2   Formula (I):
 
   wherein the thin metal wires are a laminated structure in which a first metal layer and a second metal layer are formed in this order from the substrate side,   wherein the main component of the second metal layer is copper.   
     
     
         2 . The conductive film according to  claim 1 ,
 wherein the opening ratio A is 95.0% to 99.6%.   
     
     
         3 . The conductive film according to  claim 1 ,
 wherein the thickness of the second metal layer is 300 to 2,000 nm   
     
     
         4 . The conductive film according to  claim 1 ,
 wherein the sheet resistance is less than 20 Ω/sq   
     
     
         5 . The conductive film according to  claim 2 ,
 wherein the line width L of the thin metal wires is 1.0 μm or less.   
     
     
         6 . A touch panel sensor comprising:
 the conductive film according to  claim 1 .   
     
     
         7 . A touch panel sensor comprising:
 the conductive film according to  claim 2 .   
     
     
         8 . A touch panel sensor comprising:
 the conductive film according to  claim 3 .   
     
     
         9 . A touch panel sensor comprising:
 the conductive film according to  claim 4 .   
     
     
         10 . A touch panel sensor comprising:
 the conductive film according to  claim 5 .   
     
     
         11 . A touch panel comprising:
 the touch panel sensor according to  claim 6 .   
     
     
         12 . A touch panel comprising:
 the touch panel sensor according to  claim 7 .   
     
     
         13 . A touch panel comprising:
 the touch panel sensor according to  claim 8 .   
     
     
         14 . A touch panel comprising:
 the touch panel sensor according to  claim 9 .   
     
     
         15 . A touch panel comprising:
 the touch panel sensor according to  claim 10 .

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