The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2021
Filed:
Jan. 17, 2018
Mitsui Chemicals Tohcello, Inc., Tokyo, JP;
MITSUI CHEMICALS TOHCELLO, INC., Tokyo, JP;
Abstract
An adhesive film used when sealing an electronic component to temporarily fix the electronic component, the adhesive film including a base material layer, an adhesive resin layer which is provided on a first surface side of the base material layer and which is for temporarily fixing the electronic component, and an adhesive resin layer which is provided on a second surface side of the base material layer and of which the adhesive strength decreases according to an external stimulus, in which the adhesive resin layer includes a polyvalent carboxylic acid ester-based plasticizer and an adhesive resin, and a content of the polyvalent carboxylic acid ester-based plasticizer in the adhesive resin layer is more than or equal to 0.7 parts by mass and less than or equal to 50 parts by mass with respect to 100 parts by mass of the adhesive resin included in the adhesive resin layer.