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. 09, 2015
Filed:
Oct. 26, 2009
Li-ming Chang, Hsinchu, TW;
Charng-shing LU, Hsinchu, TW;
Shur-fen Liu, Hsinchu County, TW;
Jinn-shing King, Hsinchu County, TW;
Li-Ming Chang, Hsinchu, TW;
Charng-Shing Lu, Hsinchu, TW;
Shur-Fen Liu, Hsinchu County, TW;
Jinn-Shing King, Hsinchu County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
Additives of a polyamic acid resin composition are disclosed, including an ester-phenol compound, an imidazole compound, and a heterocyclic aromatic amine compound other than the imidazole compound. The high cyclization temperature and long cyclization period of conventional polyamic acid resin compositions can be lowered and shorten by the additives of the invention. In addition, a metal foil and the polyimide resin formed from the cyclization have excellent adhesive strength, high flat degree, and excellent electrical property.