Patent ID: 6635954
Filing Date: 2003-10-21
Classification: H01L,Y10T

Abstract:
An encapsulated semiconductor die assembly comprising:a semiconductor die having an active surface and a plurality of sides; at least one adhesive segment having an outer edge and adhering to a portion of said active surface of said semiconductor die; and a lead frame including a plurality of lead members, at least one lead member of said plurality of lead members having a lead end portion connected to a portion of said lead frame, having a length, having a thickness, and having a free end portion extending over a portion of said active surface of said semiconductor die, said at least one lead member including a stress relief portion formed therein, said stress relief portion extending over a portion of said active surface of said semiconductor die, extending along a portion of said length of said at least one lead member at a location between said free end portion and said lead end portion and extending partially through said thickness of said at least one lead member, said stress relief portion formed in said at least one lead member extending along said length of said at least one lead member from a location proximate said outer edge of said at least one adhesive segment to a location proximate a side of said plurality of sides of said semiconductor die, said stress relief portion providing an enlarged space between a lower surface of said at least one lead member and a portion of said active surface of said semiconductor die, said enlarged space allowing plastic having a filler material therein having a particle size distribution and an average particle size diameter within said particle size distribution to flow therethrough without said filler material therein substantially damaging said portion of said active surface of said semiconductor die during an encapsulation process of encapsulating said semiconductor die in said plastic having said filler material therein.