Patent ID: 11942349
Assignee: MITSUI CHEMICALS TOHCELLO, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C  B  G | IPC B  C  G  H

Claim 4:
5. A method for manufacturing an electronic component comprising:
a bonding step of bonding an adhesive layer of a film or manufacturing electronic components to a back surface of an array-shaped electronic component, in which semiconductor components are sealed in an array configuration, the film comprising the adhesive layer formed of an energy-non-curing adhesive which is not cured by energy rays and a base layer provided on one surface side of the adhesive layer, and the ratio RE1 (=E′(100)/E′(25)) of the elastic modulus E′(100) of the base layer at 100° C. to the elastic modulus E′(25) of the base layer at 25° C. is such that 0.2≤RE1≤1, and the elastic modulus E′(25) is 35 MPa or more and 3500 MPa or less,
a segmenting step of separating the array-shaped electronic component into segments in a state in which the adhesive layer of the film is bonded to a back surface of the array-shaped electronic component to obtain electronic components,
an evaluation step of evaluating the array-shaped electronic component or the electronic components at a temperature of 75° C. or higher, and
a pickup step of separating the electronic components from the adhesive layer,
wherein an arithmetic average roughness (Ra) of the surface of one side of the base layer on which the adhesive layer is not provided is 0.1 μm or more and 2.0 μm or less, and a maximum height (Rz) is 1.0 μm or more and 15 μm or less,
wherein the evaluation step further comprises:
either before or after the segmenting step and prior to the pickup step, a film-suction step of suctioning and fixing the base layer to a suction table, and
a film-isolating step of separating the suction table and the film from each other before a temperature of the suction table becomes room temperature after the evaluation step.