Recessed semiconductor device

Semiconductor device manufacturing: process – Forming schottky junction – Combined with formation of ohmic contact to semiconductor...

Reexamination Certificate

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C438S572000, C438S573000, C438S574000, C438S576000

Reexamination Certificate

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10925855

ABSTRACT:
A semiconductor structure includes a first semiconductor layer, a second semiconductor layer over the first semiconductor layer, a third semiconductor layer over the second semiconductor layer, and a fourth semiconductor layer over the third semiconductor layer. A first conductive portion is coupled to the first semiconductor layer, and a second conductive portion is formed over the first semiconductor layer.

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patent: 6627473 (2003-09-01), Oikawa et al.
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patent: 6838325 (2005-01-01), Whelan et al.
patent: 2003/0057440 (2003-03-01), Inai et al.
Wakejima, Akio; “A GaAs-Based Field-Modulating Plate HFET with Improved WCDMA Peak-Output-Power Characteristics”; IEEE Transactions on Electro Devices; Sep. 2003; pp. 1983-1987; vol. 50, No. 9; IEEE.
U.S. Appl. No. 10/716,955, filed Nov. 18, 2003.
U.S. Appl. No. 10/881,162, filed Jul. 13, 2004.

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