Invention Grant
US07781232B2 Method to recover underfilled modules by selective removal of discrete components
失效
通过选择性去除分立元件来回收未充足模块的方法
- Patent Title: Method to recover underfilled modules by selective removal of discrete components
- Patent Title (中): 通过选择性去除分立元件来回收未充足模块的方法
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Application No.: US12015754Application Date: 2008-01-17
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Publication No.: US07781232B2Publication Date: 2010-08-24
- Inventor: Charles L. Arvin , Benjamin V. Fasano , Mario J. Interrante , Glenn A. Pomerantz
- Applicant: Charles L. Arvin , Benjamin V. Fasano , Mario J. Interrante , Glenn A. Pomerantz
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: DeLio & Peterson, LLC
- Agent Kelly M. Nowak; Wenjie Li
- Main IPC: H01L21/48
- IPC: H01L21/48 ; H01L21/00

Abstract:
Methods and reworked intermediate and resultant electronic modules made thereby, whereby a component in need of rework is located and removed from the module to reveal encapsulated solder connections residing within an underfill matrix. Heights of both the solder connections and underfill matrix are reduced, followed by etching the solder out of the solder connections to form openings within the underfill matrix. The underfill material is then removed to expose metallurgy of the substrate. A blank having a release layer with an array of solder connections is aligned with the exposed metallurgy, and this solder array is transferred from the blank onto the metallurgy. The transferred solder connections are then flattened using heat and pressure, followed by attaching solder connections of a new component to the flattened solder connections and underfilling these reworked solder connections residing between the new chip and substrate.
Public/Granted literature
- US20090184407A1 METHOD TO RECOVER UNDERFILLED MODULES BY SELECTIVE REMOVAL OF DISCRETE COMPONENTS Public/Granted day:2009-07-23
Information query
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