Stauffer Chemical Company

National Starch and Chemical Investment Holding Corporation

National Starch and Chemical Corporation

Gregory M Sheyon

Joseph A Aurichio

The bonding of semiconductor chips to a substrate is described wherein the first step involves the bonding of a tacky, curable and partially cured chip bonding adhesive, which is releasably supported on a support film, to the surface of the chip intended to be bonded to the substrate. The second step involves the further partial heat curing of the adhesive to convert it to a non-tacky state so that the adhesive will not undesirably stick during handling and storage operations. Thereafter, the chip with its adherent adhesive can be mounted to a substrate at elevated temperature to convert the adhesive to a more tacky state. The final step involves the curing of the adhesive after it has been used to bond the chip to the substrate.

Method of bonding a semiconductor chip to a substrate

The present invention is a die attach film which is adapted for adhesive mounting to a dicing frame. The film contains a support film, a curable die bonding adhesive releasably mounted on the support film which is adapted to receive semiconductor wafer, semiconductor die, and the like, and adhesive means to bond the support film to a dicing frame. In one embodiment the adhesive means comprise pressure sensitive adhesive means on the support film itself adjacent the portions designed to contact the dicing frame. In another embodiment, the adhesive means comprise a larger tacky film bonded to the bottom of the support film for the die attach film.

Adhesively mountable die attach film

A pressure sensitive composite article, which is useful, for example, as an exterior roofing material for a motor vehicle, is disclosed. It comprises a heat bondable plastic film which is attached to a backing material having a substantially continuous coating of a pressure sensitive adhesive on its opposite side thereof, and a polymeric release liner on the exposed side of the adhesive. The release liner has a melting point below the temperature at which the plastic film is permanently heat deformable.

Growing community of inventors

Anderson, SC, United States of America

Gregory M Sheyon