Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Chip mounted on chip
Reexamination Certificate
2007-05-29
2007-05-29
Malsawma, Lex (Department: 2823)
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Chip mounted on chip
Reexamination Certificate
active
10852315
ABSTRACT:
The present invention provides methods and apparatus related to preventing adhesive contamination of the electrical contacts of a semiconductor device in a stacked semiconductor device package. The methods and apparatus include providing a first semiconductor device with an adhesive flow control dam located on an upper surface thereof. The dam is positioned between electrical contacts and a substrate attach site on the upper surface of the first semiconductor device. The dam is rendered of a sufficient height and shape to block applied adhesive from flowing over the electrical contacts of the first semiconductor device when a second substrate is mounted onto the upper surface of the first semiconductor device. The semiconductor device package may be encapsulated with the dam in place or with the dam removed. The adhesive flow control dam thus protects the electrical contacts of the first semiconductor device from contamination by excess adhesive, which can result in unusable electrical contacts.
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Malsawma Lex
Micro)n Technology, Inc.
TraskBritt PC
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