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. 24, 2012
Filed:
Mar. 15, 2009
Charng-shing LU, Hsinchu, TW;
Shu-chu Shih, Hsinchu, TW;
Jinn-shing King, Hsinchu County, TW;
Shur-fen Liu, Hsinchu County, TW;
Charng-Shing Lu, Hsinchu, TW;
Shu-Chu Shih, Hsinchu, TW;
Jinn-Shing King, Hsinchu County, TW;
Shur-Fen Liu, Hsinchu County, TW;
Industrial Technology Research Institute, Hsinchu County, TW;
Abstract
The invention discloses double-sided metal clad laminates and fabrication methods thereof. A plurality of polyamic acid coatings is co-extruded on a first metal foil and heat imidization to provide a multilayer polyimide film. A second metal foil is hot pressed on the multilayer polyimide film, thus providing a double-sided metal clad laminate. The polyamic acid coatings include a first, a second, and a third polyamic acid coating with surface tensions of S1, S2, and S3, respectively, satisfying relations of S1>S2>S3, wherein the first polyamic acid coating is the coating directly applied on the first metal foil.