Invention Grant
- Patent Title: Ultrasonic-assisted solder transfer
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Application No.: US16775390Application Date: 2020-01-29
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Publication No.: US11541472B2Publication Date: 2023-01-03
- Inventor: Jae-Woong Nah , Stephen L. Buchwalter , Peter A. Gruber , Paul Alfred Lauro , Da-Yuan Shih
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Lou Percello, Attorney, PLLC
- Agent Daniel P. Morris; Erik Johnson
- Main IPC: B23K3/00
- IPC: B23K3/00 ; B23K1/06 ; H01L23/00 ; B23K1/00 ; B23K3/06 ; B23K103/00 ; B23K101/40

Abstract:
Apparatus and methods are disclosed for transferring solder to a substrate. A substrate belt moves one or more substrates in a belt direction. A decal has one or more through holes in a hole pattern that hold solder. Each of the solder holes can align with respective locations on one of the substrates. An ultrasonic head produces an ultrasonic vibration in the solder in a longitudinal direction perpendicular to the belt direction. The ultrasonic head and substrate can be moved together in the longitudinal direction to maintain the ultrasonic head in contact with the solder while the ultrasonic head applies the ultrasonic vibration. Various methods are disclosed including methods of transferring the solder with or without external heating.
Public/Granted literature
- US20210229203A1 ULTRASONIC-ASSISTED SOLDER TRANSFER Public/Granted day:2021-07-29
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