Invention Grant
- Patent Title: Land grid array stiffener for use with flexible chip carriers
- Patent Title (中): 用于柔性芯片载体的土地格栅阵列加强筋
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Application No.: US10336579Application Date: 2003-01-03
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Publication No.: US06905961B2Publication Date: 2005-06-14
- Inventor: David Vincent Caletka , Krishna Darbha , William Infantolino , Eric Arthur Johnson
- Applicant: David Vincent Caletka , Krishna Darbha , William Infantolino , Eric Arthur Johnson
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent John A. Jordan; William H. Steinberg
- Main IPC: H01L23/498
- IPC: H01L23/498 ; H01L21/44

Abstract:
A flexible chip carrier with contact pads on its upper surface matching those of the chip with said pads conductively connected to land grid array (LGA) pads on its lower surface matching the those of a card or PCB. The chip carrier is provided with a stiffening layer at the LGA interface. The stiffening layer is mechanically attached to the lower surface of the chip carrier. Holes are formed in the stiffening layer to expose the LGA pads. The holes are then filled with a conductive adhesive material. Compliant LGA bumps are applied to the uncured conductive adhesive material which material is then cured.
Public/Granted literature
- US20030090000A1 Land grid array stiffener for use with flexible chip carriers Public/Granted day:2003-05-15
Information query
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