Connecting structure, liquid crystal device, electronic equipment, and anisotropic conductive adhesive agent and a manufacturing method thereof

Abstract

In order to provide an anisotropic conductive adhesive agent which is capable of including a predetermined number of conductive particles between the terminals to be connected in a sure manner and which improves the conductive reliability, a plurality of conductive particles 3 included in the insulating adhesive agent 2 of the anisotropic conductive adhesive agent 1 are non-uniformly provided on the one side of the two adhering surfaces of the insulating adhesive agent 2. At the time of positioning the anisotropic conductive adhesive agent 1 between the two terminals, if the adhering surface, which is the one to which the conductive particles 3 are non-uniformly provided, is disposed to the side of the terminal, which is the one having a smaller dimension of protrusion toward the adhesive side of two terminals, it prevents the conductive particles 3, which are not positioned there, from being pressed out, even in the case that the insulating adhesive agent 2 is pressed out toward a lateral side by the terminals having a greater dimension of protrusion, at a time of thermal compression bonding. Accordingly, the predetermined number of conductive particles 3 can be included between each of the terminals, thereby improving conductive reliability.

What is claimed is:  
     
         1 . An anisotropic conductive adhesive agent comprising: 
 a first adhesive layer; and    a second adhesive layer; 
 wherein the first adhesive layer includes a plurality of electrically conductive particles, and the second adhesive layer is laminated onto the first adhesive layer;  
   the second adhesive layer is thicker than the first adhesive layer; and    a particle diameter of the electrically conductive particle is smaller than a thickness of the first adhesive layer.    
     
     
         2 . The anisotropic conductive adhesive agent according to  claim 1 , wherein the first adhesive layer and the second adhesive layer are comprised of the same material.  
     
     
         3 . The anisotropic conductive adhesive agent according to  claim 1 , wherein the first adhesive layer and the second adhesive layer are comprised of an insulating adhesive agent.  
     
     
         4 . The anisotropic conductive adhesive agent according to  claim 1 , wherein the particle diameter of the electrically conductive particles is smaller than ½ of the thickness of the first adhesive layer.  
     
     
         5 . The anisotropic conductive adhesive agent according to  claim 1 , wherein the plurality of electrically conductive particles are unevenly distributed on a surface of the first adhesive layer.