Patent ID: 6669869
Filing Date: 2003-12-30
Classification: H01B,H01L

Abstract:
An anisotropic conductive film comprising a film substrate made of an insulating resin and a plurality of conductive paths insulated from each other and penetrating the film substrate in the direction of thickness, wherein said film substrate is mainly composed of a polycarbodiimide copolymer having a structure represented by the formula (I) below:R3â€”NCN&Brketopenst;&Parenopenst;R2â€”NCN&Parenclosest;nR2â€”A&Parenopenst;R1â€”Oâ€”COâ€”O&Parenclosest;mR1â€”Aâ€”R2&Brketclosest;x&Parenopenst;NCNâ€”R2&Parenclosest;nNCNâ€”R3â€ƒâ€ƒ(I) wherein m represents an integer of 2-50; n represents an integer of 1-30; x represents an integer of 1-10; A represents a urethane bond; R1 represents an alkylene group; R2 represents an aromatic diisocyanate residue; and R3 represents an aromatic monoisocyanate residue.