| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an anisotropic conductive film which can offer both a good connection reliability and repairability in making an anisotropic conductive connection between substrate terminals and electronic component terminals. <P>SOLUTION: An anisotropic conductive film is obtained by forming a resin composition including a film forming resin, a curable liquid compound, conductive particles, an elastomer, and a curing agent into a film. After curing, the film has a storage elastic modulus (25°C) determined by a dynamic viscoelasticity measurement in a tensile vibration mode according to JIS K7244-4 of 0.5 to 1.5 GPa. The elastomer has a breaking strength of 50 to 80 MPa, and a breaking elongation of 10% or less according to ASTM D638. The content of the elastomer in the resin composition is 20 to 50 mass% of a total mass of the film forming resin, the curable liquid compound, the conductive particles, the elastomer and the curing agent. The conductive particles to be used have a compression hardness at 10% displacement of 300 to 500 kgf/mm<SP POS="POST">2</SP>under the conditions of a load of 49.035 mN and a load speed of 2.226 mN/sec. <P>COPYRIGHT: (C)2012,JPO&INPIT |
