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:
Dec. 30, 2003
Filed:
Sep. 28, 1998
Applicant:
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/3495 ;
U.S. Cl.
CPC ...
H01L 2/3495 ;
Abstract
A slit is formed in a polyimide substrate and a copper wiring pattern is formed on the surface of the polyimide substrate. Moreover, solder resist, which has a young's modulus in the range of 5 kgf/mm to 70 kgf/mm and contains a filler in the range of 10 wt % to 40 wt %, is formed on the copper wiring pattern. Thus, the copper wiring pattern becomes less susceptible to disconnection, and it is possible to provide a flex TCP semiconductor device with high manufacturing yield.