Encapsulation of advanced devices using novel PECVD and ALD schemes

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United States of America Patent

PATENT NO 9812338
SERIAL NO

13804126

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Abstract

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Embodiments of a multi-layer environmental barrier for a semiconductor device and methods of manufacturing the same are disclosed. In one embodiment, a semiconductor device is formed on a semiconductor die. The semiconductor die includes a semiconductor body and a passivation structure on the semiconductor body. A multi-level environmental barrier is provided on the passivation structure. The multi-layer environmental barrier is a low-defect multi-layer dielectric film that hermetically seals the semiconductor device from the environment. In one embodiment, the multi-layer environmental barrier has a defect density of less than 10 defects per square centimeter (cm2). By having a low defect density, the multi-layer environmental barrier serves as a robust barrier to the environment.

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Patent Owner(s)

Patent OwnerAddress
WOLFSPEED INC4600 SILICON DRIVE DURHAM NC 27703

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hagleitner, Helmut Zebulon, US 35 1040
Namishia, Daniel Wake Forest, US 19 72
Ring, Zoltan Chapel Hill, US 25 1601

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