- Patent Title: Integrated circuit device having extended under ball metallization
-
Application No.: US13033675Application Date: 2011-02-24
-
Publication No.: US08575493B1Publication Date: 2013-11-05
- Inventor: Yong Li Xu , Duane Thomas Wilcoxen , Yi-Sheng Sun , Viren Khandekar , Arkadii Samoilov
- Applicant: Yong Li Xu , Duane Thomas Wilcoxen , Yi-Sheng Sun , Viren Khandekar , Arkadii Samoilov
- Applicant Address: US CA San Jose
- Assignee: Maxim Integrated Products, Inc.
- Current Assignee: Maxim Integrated Products, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Advent, LLP
- Main IPC: H05K1/03
- IPC: H05K1/03

Abstract:
Semiconductor devices are described that have an extended under ball metallization configured to mitigate dielectric layer cracking due to stress, particularly stress caused by CTE mismatch during thermal cycling tests, dynamic deformation during drop tests, or cyclic bending tests, and so on. In an implementation, the semiconductor package devices include an integrated circuit chip having a solder ball and under ball metallization, formed on the integrated circuit chip, which is configured to receive the solder ball so that the solder ball and the under ball metallization have a contact area there between, wherein the area of the under ball metallization is area greater than the contact area.
Information query