Patent ID: 11935870
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A manufacturing method for a support piece used in manufacturing of a semiconductor device having a dolmen structure, the semiconductor device comprising: a substrate; a first chip disposed on the substrate; a plurality of support pieces disposed around the first chip on the substrate; and a second chip disposed to be supported by the plurality of support pieces and to cover the first chip, the method comprising processes of:
(A) preparing a laminate film comprising a base material film, an adhesive layer and a support piece formation film in order; and
(B) forming the support pieces on a surface of the adhesive layer by singulating the support piece formation film,
wherein the support piece formation film is a resin film comprising at least a thermosetting resin layer, and
wherein the process (B) comprises:
forming a partial cut in the support piece formation film that extends in a thickness direction of the support piece formation film, so as to partially cut into the thermosetting resin layer; and
singulating the support piece formation film in a cooled state by imparting an expansion to the laminate film that stretches the base material film and the adhesive layer, wherein the support piece formation film is caused to split from the partial cut in the thickness direction in response to a stretching of the adhesive layer.