Lateral devices containing permanent charge
First Claim
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1. A lateral semiconductor device comprising:
- a body region laterally connected to a drain region by a laterally extended semiconductor drift region; and
permanent charge, sufficient to cause depletion in at least a first laterally extended portion of said drift region, at the interface between said drift region and an insulation region;
wherein said drift region also includes a second laterally extended portion having a conductivity type opposite to that of said first portion,and wherein said first portion overlies said second portion.
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Abstract
A lateral device includes a gate region connected to a drain region by a drift layer. An insulation region adjoins the drift layer between the gate region and the drain region. Permanent charges are embedded in the insulation region, sufficient to cause inversion in the insulation region.
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Citations
16 Claims
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1. A lateral semiconductor device comprising:
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a body region laterally connected to a drain region by a laterally extended semiconductor drift region; and permanent charge, sufficient to cause depletion in at least a first laterally extended portion of said drift region, at the interface between said drift region and an insulation region; wherein said drift region also includes a second laterally extended portion having a conductivity type opposite to that of said first portion, and wherein said first portion overlies said second portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lateral semiconductor device comprising:
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a carrier source; a laterally extended semiconductor drift region laterally interposed between said carrier source and a drain region; and permanent charge, embedded in at least one insulating region which vertically adjoins said drift region, which has a polarity opposite to the polarity of ionized dopants in said drift region when said drift region is depleted. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification