Laminate, a substrate with wiring, an organic EL display element, a connection terminal for an organic EL display element and a method for producing each

Abstract

A laminate for forming a substrate with wires, comprising a conductive layer containing Al or an Al alloy as the major component, formed on a substrate and a capping layer containing a Ni-Mo alloy as the major component, formed on the conductive layer, a substrate with wires produced by etching the laminate to remove an unnecessary metal, and a method for producing the same.

1 . A laminate comprising: 
 a substrate,    a first conductive layer that comprises Al or an Al alloy as the major component present on said substrate; and    a capping layer that comprises a Ni—Mo alloy as the major component present on said first conductive layer.    
     
     
         2 . The laminate according to  claim 1 , wherein said Al alloy is an alloy of Al and at least one metal selected from the group consisting of Nd, Ag, and Cu.  
     
     
         3 . The laminate according to  claim 1 , wherein the film thickness of the conductive layer is 100 to 500 nm.  
     
     
         4 . The laminate according to  claim 2 , wherein the film thickness of the capping layer is 10 to 200 nm.  
     
     
         5 - 9 . (canceled)  
     
     
         10 . The laminate according to  claim 1 , wherein the capping layer comprises at least one member selected from the group consisting of (1) oxygen, (2) nitrogen, (3) oxygen and nitrogen, (4) oxygen and carbon, and (5) oxygen, nitrogen, and carbon.  
     
     
         11 . The laminate according to  claim 1 , wherein the capping layer comprises Ni by 20-90 mass % based on all the components, and 
 wherein the capping layer comprises Mo by 10-80 mass % based on all the components.    
     
     
         12 . An organic EL display element comprising 
 a laminate described in  claim 1 ,    wherein a second electrode layer is present between the substrate and a first electrode layer,    wherein an organic EL layer is disposed between the first electrode layer and the second electrode layer, and    wherein the substrate, the first conductive layer, and the capping layer are arranged in an order starting from the substrate.    
     
     
         13 . An organic EL display element comprising: 
 a first electrode layer; and    a second electrode layer present between the first electrode layer and a substrate; and    an organic EL layer disposed between the first electrode layer and the second electrode layer,    wherein a first conductive layer is connected electrically to the first electrode layer,    wherein a capping layer is present on an upper side of the first conductive layer,    wherein the first conductive layer comprises Al or an Al alloy as the major component, and    wherein the capping layer comprises a Ni—Mo alloy as the major component.    
     
     
         14 . The organic EL display element according to  claim 13 , wherein the capping layer comprises at least one member selected from the group consisting of (1) oxygen, (2) nitrogen, (3) oxygen and nitrogen, (4) oxygen and carbon, and (5) oxygen, nitrogen, and carbon.  
     
     
         15 . The organic EL display element according to  claim 13 , further comprising an ITO layer on said surface and an underlayer present on said ITO layer.  
     
     
         16 . The organic EL display element according to  claim 15 , wherein the anti-Ni-diffusion layer comprises MoNb, MoTa, MoV, or MoW.  
     
     
         17 . The organic EL display element according to  claim 15 , further comprising an underlayer that comprises Mo or a Mo alloy present under the first conductive layer.  
     
     
         18 . The organic EL display element according to  claim 13 , wherein the second electrode layer is an ITO layer.  
     
     
         19 . A connection terminal for an organic EL display element, to connect a first electrode layer present on the substrate for the organic EL display element to a driving circuit, the connection terminal comprising: 
 a first conductive layer that comprises Al or an Al alloy as the major component;    a capping layer that comprises a Ni—Mo alloy as the major component,    wherein said capping layer is present at an upper side of the first conductive layer, and    wherein a circuit supplies an electric current from the driving circuit to the first electrode layer.    
     
     
         20 . The connection terminal for an organic EL display element according to  claim 19 , wherein the capping layer comprises at least one member selected from the group consisting of (1) oxygen, (2) nitrogen, (3) oxygen and nitrogen, (4) oxygen and carbon, and (5) oxygen, nitrogen, and carbon.  
     
     
         21 . The connection terminal for an organic EL display element according to  claim 19 , further comprising an ITO layer on said surface and an underlayer present on said ITO layer.  
     
     
         22 . The connection terminal for an organic EL display element according to  claim 19 , wherein the circuit supplies an electric current from a plurality of second electrodes to a single first electrode, and the maximum instantaneous current flowing into the single first electrode is at least 50 mA.  
     
     
         23 - 25 . (canceled)  
     
     
         26 . A substrate comprising: 
 the laminate described in  claim 1 , and wires,    wherein the laminate is patterned in a flat form.    
     
     
         27 - 29 . (canceled)  
     
     
         30 . An organic EL display element comprising: 
 the organic EL display element described in  claim 13;  and    a driving circuit connected to the display element so that a display has a luminance of at least 100 cd/m 2 .