Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Bump leads
Reexamination Certificate
2007-01-30
2007-01-30
Smith, Zandra V. (Department: 2822)
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Bump leads
C257S708000, C257S688000
Reexamination Certificate
active
11075967
ABSTRACT:
Dielectric rings are configured to be disposed around contact pads on a surface of a semiconductor device or another substrate. The rings may be fabricated or otherwise disposed around the contact pads of a semiconductor device or other substrate before or after conductive structures, such as solder balls, are secured to the contact pads. Upon connecting the semiconductor device face-down to a higher level substrate and establishing electrical communication between contact pads of the semiconductor device and contacts pads of the substrate, the rings prevent the material of solder balls protruding from the semiconductor device from contacting regions of the surface of the semiconductor device that surround the contact pads thereof. The rings may be preformed structures or fabricated on the surface of the semiconductor device or other substrate. For example, stereolithographic techniques may be used to form the rings.
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Rose Kiesha
Smith Zandra V.
TraskBritt
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