Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame – With stress relief
Reexamination Certificate
2006-08-01
2006-08-01
Ngô, Ngân V. (Department: 2818)
Active solid-state devices (e.g., transistors, solid-state diode
Lead frame
With stress relief
C257S668000, C257S690000, C257S738000
Reexamination Certificate
active
07084489
ABSTRACT:
Stress balanced semiconductor device packages, a method of forming, and a method of modifying a mold segment for use in the method are disclosed. A semiconductor die is attached to one side of a substrate having discrete conductive elements such as a ball grid array (BGA) on the opposing side thereof. An envelope of encapsulant material is disposed over the semiconductor die on one side of the substrate while a stress balancing structure comprising at least one stem member and at least one transversely extending branch member formed of encapsulant material is disposed over the opposing side of the substrate in an arrangement which does not interfere with the discrete conductive elements. The envelope and the stress balancing structure may be simultaneously formed.
REFERENCES:
patent: 4887148 (1989-12-01), Mu
patent: 5627407 (1997-05-01), Suhir et al.
patent: 5834848 (1998-11-01), Iwasaki
patent: 5900675 (1999-05-01), Appelt et al.
patent: 5901041 (1999-05-01), Davies et al.
patent: 6258624 (2001-07-01), Corisis
patent: 6291899 (2001-09-01), Wensel et al.
patent: 6294831 (2001-09-01), Shishido et al.
patent: 6316829 (2001-11-01), Boon et al.
patent: 6384487 (2002-05-01), Smith
patent: 6693363 (2004-02-01), Tay et al.
patent: 2004/0169278 (2004-09-01), Kinsman
patent: 2004/0207064 (2004-10-01), Brooks et al.
patent: 2005/0127531 (2005-06-01), Tay et al.
patent: 2005/0164429 (2005-07-01), Kinsman et al.
patent: 2005/0186705 (2005-08-01), Jackson et al.
Ngo Ngan V.
TraskBritt
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