Hermetic seal

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Entirely of metal except for feedthrough

Reexamination Certificate

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Details

C257S704000, C257S705000, C257S707000, C257S709000

Reexamination Certificate

active

07135768

ABSTRACT:
Ultrasonically formed seals, their use in semiconductor packages, and methods of fabricating semiconductor packages. A brittle center member (such as glass) has a molded edge member. That edge member is ultrasonically welded to a body. The molded edge member and body are comprised of ultrasonically weldable materials. A hermetically sealed semiconductor package includes a lid with a brittle center plate and a molded edge. The molded edge is ultrasonically welded to a body. Locating features that enable accurate positioning of the lid relative to the body, and energy directors can be included. Pins having a relieved portion and a protruding portion can also be hermetically sealed to the body. Such pins can have various lengths that enable stadium-type pin rows. The pins can be within channels, which can hold a sealant. The body can include a device that is electrically connected to the pins.

REFERENCES:
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patent: 5194695 (1993-03-01), Maslakow
patent: 5239806 (1993-08-01), Maslakow
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patent: 5572065 (1996-11-01), Burns
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patent: 6384473 (2002-05-01), Peterson et al.
patent: 6392308 (2002-05-01), Muto et al.
patent: 6489178 (2002-12-01), Coyle et al.
patent: 6674159 (2004-01-01), Peterson et al.

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