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Title:
PBGA STIFFENER PACKAGE AND METHOD OF MANUFACTURING
Document Type and Number:
WIPO Patent Application WO1998050949
Kind Code:
A3
Abstract:
A PBGA package includes PBGA member, a stiffener ring, and a stiffener fixture which includes a retaining recess having a floor for receiving the stiffener ring and includes a ledge positioned above the recess floor for receiving the PBGA member. An adhesive layer is applied to the stiffener ring, which is adhered to the PBGA member. The stiffener ring and PBGA member are essentially coplanar to less than 8 mils. A top plate is placed on top of the PBGA member and the ring and member are secured together tightly.

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Inventors:
VONGFUANGFOO SUTEE
BACHER BRENT
SUMAGAYSAY FELIPE
Application Number:
PCT/US1998/007473
Publication Date:
February 04, 1999
Filing Date:
April 14, 1998
Export Citation:
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Assignee:
LSI LOGIC CORP (US)
International Classes:
H01L23/24; (IPC1-7): H01L21/52
Foreign References:
US5173766A1992-12-22
US5219794A1993-06-15
US5616520A1997-04-01
US3885304A1975-05-27
US4264917A1981-04-28
US4372037A1983-02-08
US4558510A1985-12-17
US4814943A1989-03-21
US5786631A1998-07-28
US5610442A1997-03-11
US5041395A1991-08-20
US5057460A1991-10-15
US5700697A1997-12-23
US5804467A1998-09-08
US4218701A1980-08-19
US5436203A1995-07-25
US5547730A1996-08-20
US3435516A1969-04-01
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