Patent ID: 6651320
Filing Date: 2003-11-25
Classification: H01L,H05K,Y02P,Y10T

Abstract:
A method for mounting a semiconductor element to a circuit board, comprising:disposing an insulating adhesive, having a property of shrinking upon being set, at least at either of confronting faces of the circuit board and the semiconductor element; registering said circuit board and said semiconductor element such that an electrode on said circuit board corresponds to a projecting electrode on said semiconductor element; coupling said confronting faces of said circuit board and said semiconductor element to one another via said insulating adhesive; setting said insulating adhesive such that said electrode on said circuit board and said projecting electrode on said semiconductor element become electrically interconnected through shrinkage of said insulating adhesive, whereby said semiconductor element and said circuit board become fixed in a coupled state; and then injecting a sealing resin agent into a gap between said circuit board and said semiconductor element from a side end face of said semiconductor element and portions of said semiconductor element that neighbor said side end face, wherein injecting the sealing resin agent into the gap between said circuit board and said semiconductor element includes (i) subjecting said circuit board and said semiconductor element to a sub-atmospheric pressure, (ii) applying said sealing resin agent to an entire periphery of said semiconductor element along said side end face and said portions of said semiconductor element that neighbor said side end face under the sub-atmospheric pressure so as to seal said gap, and (iii) bringing said circuit board and said semiconductor element to atmospheric pressure such that said sealing resin agent applied to said side face and its neighboring portions of said semiconductor element invades said gap as a result of the difference between the sub-atmospheric pressure and the atmospheric pressure.