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.

Date of Patent:
Nov. 21, 2023

Filed:

Sep. 14, 2018
Applicants:

Toyo Ink SC Holdings Co., Ltd., Tokyo, JP;

Toyochem Co., Ltd., Tokyo, JP;

Inventors:

Toshiichi Sawaguchi, Tokyo, JP;

Naohiro Tanaka, Tokyo, JP;

Kaori Sakaguchi, Tokyo, JP;

Kenji Andou, Tokyo, JP;

Hidenobu Kobayashi, Tokyo, JP;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 7/20 (2006.01); B32B 7/027 (2019.01); H01L 23/36 (2006.01); B32B 27/06 (2006.01); B32B 7/06 (2019.01); B32B 7/12 (2006.01);
U.S. Cl.
CPC ...
H05K 7/2039 (2013.01); B32B 7/027 (2019.01); B32B 7/06 (2013.01); B32B 7/12 (2013.01); B32B 27/06 (2013.01); H01L 23/36 (2013.01); B32B 2264/10 (2013.01); B32B 2307/302 (2013.01); B32B 2307/542 (2013.01); B32B 2457/00 (2013.01);
Abstract

The present invention provides a thermally conductive insulating sheet having appropriate fluidity upon being heated and pressurized, and free from of the possibility of a material leaking to the outside beyond the original size of the sheet. The thermally conductive insulating sheet according to the present invention contains an uncured material and/or a semi-cured material of a binder resin (R) which is a thermosetting resin. In the present invention, a complex viscosity in a temperature range of 100-200° C. is 10,000-150,000 Pa·s, a ratio (α/β) of the maximum value (α) to the minimum value (β) of the complex viscosity in said temperature range is 1.0-4.0, and the flow value is 90-100%. Flow value(%)=W2/W1×100.


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