Patent ID: 6645792
Filing Date: 2003-11-11
Classification: H01L

Abstract:
A method for fabricating a resin-encapsulated semiconductor device, comprising the steps of:(a) preparing a lead frame, including: an upper surface; a bottom surface; a first region provided on the upper surface; a second region provided on the upper surface and surrounding the first region; a third region located outside the second region; and at least one groove formed on the bottom surface of the lead frame, the at least one groove extending from an area corresponding to the first region across another area corresponding to the second region so as to reach the third region; (b) providing a resin creepage preventing member on the area corresponding to the first region on the bottom surface; (c) mounting a semiconductor chip on the first region of the lead frame; and (d) clamping the second region by an encapsulation mold so as to place the semiconductor chip into a die cavity, and filling the die cavity with a resin, wherein in the step (d), the first region of the lead frame is provided within the die cavity, and the third region of the lead frame is exposed to an ambient air with the die cavity being filled with the encapsulation resin.