Production method of anisotropic conductive connector

Abstract

The present invention aims at providing a production method capable of efficiently producing an anisotropic conductive connector having a structure wherein the center line of plural conductive paths penetrating in the thickness direction of a film substrate forms an angle with a line perpendicular to the principal plane of the film substrate, which shows high reliability of connection with the target. The present invention is characterized in that an insulating film and a conductive wire are integrated on a core, the resulting roll-like product is removed from the core, which is opened to give a plane-like product, plural films with conductive wires 10A are cut out from the plane-like product, then the plural films with conductive wires are accumulated such that the conductive wires 2 of the adjacent films are in parallel relation with each other, the obtained laminate is heated and pressurized and the obtained block is cut in a predetermined film thickness along the plane forming an angle with the conductive wire 2.

What is claimed is:  
     
         1 . A method of producing an anisotropic conductive connector having a structure wherein the center line of plural conductive paths penetrating in the thickness direction of a film substrate forms an angle with a line perpendicular to the principal plane of the film substrate, which comprises the steps of 
 winding an insulating film around the circumference of a core,    then helically winding a conductive wire around the circumference of the insulating film at a predetermined pitch, or helically winding a conductive wire around the circumference of the core,    then winding the insulating film to cover the conductive wire,    heating and pressurizing to integrate the insulating film and the conductive wire on the core to give a roll-like product,    removing said roll-like product from the core,    incising the product to give a plane-like product,    cutting out plural films with conductive wires from the plane-like product,    then laminating the plural films with conductive wires such that the conductive wires on the adjacent films are parallel to each other to give a laminate,    heating and pressurizing the laminate to form a block integrating the plural films with conductive wires, and    then cutting the block in a predetermined film thickness along the plane forming an angle with the conductive wire to give an anisotropic conductive connector.    
     
     
         2 . The production method of  claim 1 , wherein the plural films with conductive wires are cut out in such a manner that the principal plane of the insulating film has a linear side and the center line of the plural conductive wires forms a predetermined inclination angle with the linear side, the plural films with conductive wires are laminated such that the linear sides of the adjacent insulating films are in parallel relation, thereby forming a laminate, and a block obtained from the laminate is cut in a predetermined film thickness along the plane perpendicular to a linear edge side thereof derived from the linear side of the principal plane of the insulating film.  
     
     
         3 . The production method of  claim 1 , wherein the insulating film and the conductive wires wound around the core are set together with the core in a space permitting formation of a decompression or vacuum and, after decompressing or vacuumizing the space, heated and pressurized to integrate the insulating film and the conductive wire on the core.  
     
     
         4 . The production method of  claim 3 , wherein said space permitting formation of a decompression or vacuum is an inner space of a bag made of a flexible film.  
     
     
         5 . The production method of  claim 3 , wherein said pressing is done by introducing a compressed air into said space permitting formation of a decompression or vacuum.  
     
     
         6 . The production method of  claim 1 , wherein the laminate is set in the space permitting formation of a decompression or vacuum, and after decompressing or vacuumizing the space, heated and pressurized.  
     
     
         7 . The production method of  claim 6 , wherein the space permitting formation of a decompression or vacuum is an inner space of a bag made of a flexible film.  
     
     
         8 . The production method of  claim 6 , wherein the laminate is housed in a heat resistant box having a size leaving some clearance between the inside surface of the box and the lateral surface of the laminate upon accommodation of the laminate, set in the space inside the bag made of a flexible film together with the heat resistant box, and after decompressing or vacuumizing the space, heated and pressurized.