Invention Grant
- Patent Title: Solder bump reflow by induction heating
- Patent Title (中): 通过感应加热焊接回流焊
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Application No.: US14248373Application Date: 2014-04-09
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Publication No.: US09190375B2Publication Date: 2015-11-17
- Inventor: Stephen P. Ayotte , Sebastien S. Quesnel , Glen E. Richard , Timothy D. Sullivan , Timothy M. Sullivan
- Applicant: International Business Machines Corporation
- Applicant Address: KY Grand Cayman
- Assignee: GlobalFoundries, Inc.
- Current Assignee: GlobalFoundries, Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Gibb & Riley, LLC
- Agent Anthony J. Canale
- Main IPC: H01L23/00
- IPC: H01L23/00

Abstract:
A method of applying inductive heating to join an integrated circuit chip to an electrical substrate using solder bumps including applying a magnetic field to a magnetic liner in thermal contact with a solder bump on the integrated circuit chip. The magnetic field causes Joule heating in the magnetic liner sufficient to melt the solder bump, which has a lower portion embedded in a first dielectric layer and an upper portion at least partially embedded in a second dielectric layer. The lower portion is in electrical contact with a conductive pad, the first dielectric layer is above the conductive pad and the second dielectric layer is on top of the first dielectric layer. The duration of application of the magnetic field is controlled to achieve a joining temperature that is approximately halfway between the storage and operating temperatures of the integrated circuit chip.
Public/Granted literature
- US20150294948A1 SOLDER BUMP REFLOW BY INDUCTION HEATING Public/Granted day:2015-10-15
Information query
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