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:
Jan. 26, 2010
Filed:
Sep. 29, 2005
Takashi Enoki, Tokyo, JP;
Atsushi Izumi, Tokyo, JP;
Yumiko Yamamoto, Tokyo, JP;
Takahiro Harada, Tokyo, JP;
Takashi Enoki, Tokyo, JP;
Atsushi Izumi, Tokyo, JP;
Yumiko Yamamoto, Tokyo, JP;
Takahiro Harada, Tokyo, JP;
Sumitomo Bakelite Company, Ltd., Tokyo, JP;
Abstract
A resin composition having high heat resistance and low dielectric constant after heat treatment, a varnish thereof and a semiconductor device using the same are provided by a resin composition including a compound having a structure represented by the general formula (): wherein, 'Ar' is an aromatic group; 'a' is 0 or 1; Ris an organic group having one or more carbon atoms and at least one is a group having an alicyclic structure; when “q” is an integer of 2 or more, Rs may be the same or different from each other; at least one of Rto Rand at least one of Rto Ron respective benzene rings are Ar-binding sites or R-binding sites and the others of Rto Rand Rto Rare each hydrogen, a group having an alicyclic structure, an organic group having 1 to 10 carbon atoms, a hydroxyl group or a carboxyl group; when “a” is 0, at least one of Rto Rand Rto Ris a group having an alicyclic structure; “q” is an integer of 1 or more; and “X” is any of —O—, —NHCO—, —COHN—, —COO— and —OCO—.