SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 28, 2017
app pub date -
Mar 24, 2016
filing date -
Mar 24, 2016
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Abstract
A semiconductor device including a substrate, a plurality of III-nitride semiconductor layers, a source electrode, a gate electrode, a drain electrode, and a doped layer. The III-nitride semiconductor layers are disposed on the substrate. A two dimensional electron gas (2DEG) channel is formed in the III-nitride semiconductor layers. The source electrode, the gate electrode, and the drain electrode are disposed on the III-nitride semiconductor layers. The gate electrode is located between the source electrode and the drain electrode. The source electrode and the drain electrode are electrically connected to the 2DEG channel. A lateral direction is defined from the source electrode to the drain electrode. The doped layer is disposed between the gate electrode and the III-nitride semiconductor layers. The doped layer includes a plurality of dopants, and a concentration of the dopants varies along the lateral direction.
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