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1. (WO2018181597) MOUNTING STRUCTURE MANUFACTURING METHOD AND SHEET MATERIAL USED IN THE SAME

Pub. No.:    WO/2018/181597    International Application No.:    PCT/JP2018/013011
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 29 01:59:59 CEST 2018
IPC: H01L 23/29
H01L 21/56
H01L 23/31
Applicants: NAGASE CHEMTEX CORPORATION
ナガセケムテックス株式会社
Inventors: HASHIMOTO Takayuki
橋本 卓幸
ISHIBASHI Takuya
石橋 卓也
NISHIMURA Kazuki
西村 和樹
Title: MOUNTING STRUCTURE MANUFACTURING METHOD AND SHEET MATERIAL USED IN THE SAME
Abstract:
[Problem] To suppress the generation of ionic impurities from a sheet material even in an environment like that of a high temperature, high humidity bias test. [Solution] A method for manufacturing a mounting structure, the method comprising: a step for preparing a mounting member that is provided with a first circuit member and a plurality of second circuit members to be loaded on the first circuit member, and that has a space formed between the first circuit member and the second circuit members; a step for preparing a sheet material containing a thermosetting resin, a curing agent, a thermoplastic resin, and an inorganic filler; a step for disposing the sheet material on the mounting member so as to face the second circuit members; and a sealing step for pressing the sheet material against the first circuit member, heating the sheet material, and sealing the second circuit members while maintaining the space. The total of chloride ions, sodium ions, and potassium ions contained in the thermoplastic resin is 30 ppm or less on a mass basis.