Semiconductor device having diode characteristic
First Claim
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1. A semiconductor device, comprising:
- a first drift layer of a first conductivity type;
a first contact layer of a second conductivity type which is formed on the first drift layer;
a first electrode in ohmic-connection with the first drift layer; and
a second electrode having a first portion which is adjacent the first drift layer and a first portion of the first contact layer via an insulating film and a second portion which is directly contacting a side surface and an upper surface of a second portion of the first contact layer, the first portion of the first contact layer being between the second portion of the first contact layer and the first electrode.
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Abstract
According to one embodiment, a semiconductor device is provided. The semiconductor device has a first region formed of semiconductor and a second region formed of semiconductor which borders the first region. An electrode is formed to be in ohmic-connection with the first region. A third region is formed to sandwich the first region. A first potential difference is produced between the first and the second regions in a thermal equilibrium state, according to a second potential difference between the third region and the first region.
17 Citations
14 Claims
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1. A semiconductor device, comprising:
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a first drift layer of a first conductivity type; a first contact layer of a second conductivity type which is formed on the first drift layer; a first electrode in ohmic-connection with the first drift layer; and a second electrode having a first portion which is adjacent the first drift layer and a first portion of the first contact layer via an insulating film and a second portion which is directly contacting a side surface and an upper surface of a second portion of the first contact layer, the first portion of the first contact layer being between the second portion of the first contact layer and the first electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A semiconductor device, comprising:
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a first drift layer of a first conductivity type; a first contact layer of a second conductivity type which is on the first drift layer; a first electrode in ohmic-connection with the first drift layer; and a second electrode having a first portion which is contacting the first drift layer and a first portion of the first contact via an insulating film and a second portion which is directly contacting a side surface and a first surface of a second portion of the first contact layer, the first surface of the second portion of the first contact layer not bordering the first contact layer. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification