Patent ID: 6566422
Filing Date: 2003-05-20
Classification: C08G,C09J,H01L,H05K,Y10S

Abstract:
A connecting material for bonding and connecting elements having electrodes thereon in a correspondingly confronting relation to each other, comprisingan adhesive component comprising an epoxy resin and silica, the material having, after having been cured, characteristic features comprising a modulus of elasticity in the range of 1-12 GPa, a glass transition temperature (Tg) in the range of 120-200Â° C., a coefficient of linear expansion (&agr;1) of 50 ppm/Â° C. or lower at temperatures below Tg and a coefficient of linear expansion (&agr;2) of 110 ppm/Â° C. or lower at temperatures above Tg, wherein the difference (&agr;2âˆ’&agr;1) does not exceed 60 ppm/Â° C.