Invention Grant
- Patent Title: Leadframe package with side solder ball contact and method of manufacturing
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Application No.: US17073190Application Date: 2020-10-16
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Publication No.: US11658098B2Publication Date: 2023-05-23
- Inventor: Jefferson Talledo , Tito Mangaoang
- Applicant: STMICROELECTRONICS, INC.
- Applicant Address: PH Calamba
- Assignee: STMicroelectronics, Inc.
- Current Assignee: STMicroelectronics, Inc.
- Current Assignee Address: PH Calamba
- Agency: Seed IP Law Group LLP
- The original application number of the division: US16174031 2018.10.29
- Main IPC: H01L23/495
- IPC: H01L23/495 ; H01L23/00 ; H01L21/48 ; H01L21/56 ; H01L21/78 ; H01L23/31

Abstract:
The present disclosure is directed to a leadframe package having a side solder ball contact and methods of manufacturing the same. A plurality of solder balls are coupled to recesses in a leadframe before encapsulation and singulation. After singulation, a portion of each solder ball is exposed on sidewalls of the package. This ensures that the sidewalls of the leads are solder wettable, which allows for the formation of stronger joints when the package is coupled to a substrate. This increased adhesion reduces resistance at the joints and also mitigates the effects of expansion of the components in the package such that delamination is less likely to occur. As a result, packages with a side solder ball contact have increased life cycle expectancies.
Public/Granted literature
- US20210050282A1 LEADFRAME PACKAGE WITH SIDE SOLDER BALL CONTACT AND METHOD OF MANUFACTURING Public/Granted day:2021-02-18
Information query
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