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. 05, 2016
Filed:
May. 10, 2012
Kaori Sumitomo, Kanagawa, JP;
Hideyuki Arakawa, Kanagawa, JP;
Hiroshi Horibe, Kanagawa, JP;
Yasuki Takata, Kanagawa, JP;
Kaori Sumitomo, Kanagawa, JP;
Hideyuki Arakawa, Kanagawa, JP;
Hiroshi Horibe, Kanagawa, JP;
Yasuki Takata, Kanagawa, JP;
Renesas Electronics Corporation, Tokyo, JP;
Abstract
There is provided a technology capable of suppressing the damage applied to a pad. When the divergence angle of an inner chamfer part is smaller than 90 degrees, the ultrasonic conversion load in a direction perpendicular to the surface of the pad is very small in magnitude. In other words, the ultrasonic conversion load in a direction perpendicular to the surface of the pad is sufficiently smaller in magnitude than the ultrasonic conversion load in a direction in parallel with the surface of the pad. Consequently, when the divergence angle of the inner chamfer part is smaller than 90 degrees, the ultrasonic conversion load in a direction perpendicular to the surface of the pad can be sufficiently reduced in magnitude, which can prevent pad peeling.