Patent ID: 6458236
Filing Date: 2002-10-01
Classification: H01L,H05K,Y10T

Abstract:
An electrical part mounting method comprising the steps of:lowering at a speed of about 20 mm/second a pressure head having a flat lower surface that has been heated to about 220 Â° C. to a location near an electrical part installed on a film of thermosetting anisotropic conductive material that includes an adhesive agent; moving said pressure head downwardly at a speed of about 20 &mgr;m/second such that shaking of the pressure head is restricted, until said flat surface makes light contact with said electrical part while maintaining said pressure head parallel with said electrical part; pressing said electrical part with a first pressure applied by said pressure head; maintaining said first pressure on the electrical part for a fixed time period during which fixed time period the pressure head moves downwardly and remains parallel with said electrical part; pressing said electrical part with a second pressure higher than said first pressure for a fixed time period; and heating said electrical part through said pressure head to a temperature that will change the adhesive agent for said thermosetting anisotropic conductive material into liquid allowing the pressure head to descend and the conductive material to flow thus completing electrical connections of the electric part.