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:
Apr. 14, 2015
Filed:
Sep. 18, 2013
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Tomoko Higashino, Kanagawa, JP;
Yuichi Morinaga, Kanagawa, JP;
Kazuya Tsuboi, Kanagawa, JP;
Tamaki Wada, Kanagawa, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
To provide a semiconductor device having an improved quality. The semiconductor device of the invention has a tape substrate having a semiconductor chip thereon, a plurality of land pads placed around the semiconductor chip, a plurality of wires for electrically coupling the electrode pad of the semiconductor chip to the land pad, and a plurality of terminal portions provided on the lower surface of the tape substrate. An average distance between local peaks of the surface roughness of a first region between the land pad of the tape substrate and the semiconductor chip is smaller than an average distance of local peaks of the surface roughness of a second region between the land pad of the tape substrate and the first region.