Semiconductor device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9443790
APP PUB NO 20140217560A1
SERIAL NO

14161248

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A semiconductor device includes a semiconductor substrate having a first surface, a through silicon via (TSV) that is formed so that at least a part thereof penetrates through the semiconductor substrate, and an insulation ring. The insulation ring is formed so as to penetrate through the semiconductor substrate and so as to surround the TSV. The insulation ring includes a tapered portion and a vertical portion. The tapered portion has a sectional area which is gradually decreased from the first surface toward a thickness direction of the semiconductor substrate. The vertical portion has a constant sectional area smaller than the tapered portion.

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First Claim

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Patent Owner(s)

  • ELPIDA MEMORY, INC.;LONGITUDE SEMICONDUCTOR S.A.R.L.

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Osamu Tokyo, JP 24 219

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