Method of attaching a die to a substrate

Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Including adhesive bonding step

Reexamination Certificate

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C438S123000, C438S119000, C438S127000

Reexamination Certificate

active

06875635

ABSTRACT:
A semiconductor device30includes a base carrier32, an adhesive material layer36and an integrated circuit die34. The base carrier32has a top side and a bottom side, the top side having a central area for receiving the die34and a peripheral area surrounding the central area. The adhesive material layer36is disposed on the top side of the base carrier in an “X” shaped pattern. The “X” shaped pattern includes two bisecting lines. The two bisecting lines extend well beyond the central area and into the peripheral area of the base carrier top surface. The die34is attached to the base carrier32with the adhesive material layer36at the central area. Even after attachment of the die34, the adhesive material36extends well beyond the die34and the central area into the peripheral area.

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National Semiconductor Corporation, “Semiconductor Packaging Assembly Technology”, Aug. 1999, pp. 1-8.
National Semiconductor Corporation, “Plastic Package Moisture-Induced Cracking”, Aug. 1999, pp. 1-5.
Han et al., “Three-Dimensional Simulation of Microchip Encapsulation Process”, Dept. of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, Michigan 49931, pp. 1-17 and Figs. 1-11.

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