Invention Grant
US08218333B2 Printed circuit board and mounting structure for surface mounted device
有权
印刷电路板和表面安装装置的安装结构
- Patent Title: Printed circuit board and mounting structure for surface mounted device
- Patent Title (中): 印刷电路板和表面安装装置的安装结构
-
Application No.: US12401247Application Date: 2009-03-10
-
Publication No.: US08218333B2Publication Date: 2012-07-10
- Inventor: Masato Udaka , Seiji Tokii
- Applicant: Masato Udaka , Seiji Tokii
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2008-061638 20080311
- Main IPC: H05K1/18
- IPC: H05K1/18

Abstract:
The present invention provides a printed circuit board capable of sufficiently ensuring joint strength and joint reliability when mounting a surface mounted device, and a mounting structure for a surface mounted device using the printed circuit board. A BGA package as a surface mounted device includes a plurality of solder balls arranged thereon and a printed circuit board includes a plurality of mounting pads corresponding respectively to the plurality of solder balls. The BGA package is connected to the mounting pads on the printed circuit board due to melting of the solder balls, thereby mounted on the printed circuit board. A concave via hole is formed on each of the mounting pads having a circular surface shape and a part of the solder ball is in the convex via hole. Here, the center of the convex via hole is apart from the center of each of the mounting pads by at least the diameter of the concave via hole.
Public/Granted literature
- US08116094B2 Printed circuit board and mounting structure for surface mounted device Public/Granted day:2012-02-14
Information query