Method for forming die assembly with heat spreader

摘要

A first major surface of a semiconductor die (204) is attached onto a package substrate (202). A heat spreader (212) is attached to a second major surface of the semiconductor die. The second major surface is opposite the first major surface, and the semiconductor die, package substrate, and heat spreader form a die assembly (209). A die release film (214) conforms to a transfer mold (216). The transfer mold is closed around the die assembly such that the die release film is compressed against the heat spreader and a cavity (220) is formed around the die assembly. A thermoset material (222) is transferred into the cavity. The die assembly is released from the die release film and the transfer mold.