Bidirectional Bipolar Transistor Structure with Field-Limiting Rings Formed by the Emitter Diffusion

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United States of America Patent

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15083217

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Abstract

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A symmetrically-bidirectional power bipolar transistor having, on both surfaces of a semiconductor die, an n-type emitter/collector region which is completely surrounded by a first recessed field plate, which is itself completely surrounded by a p-type region including p+ contact areas. All of the p-type region is preferably bordered and surrounded by a second recessed field plate trench. The second recessed field plate trench is itself surrounded by an n-type region which is wholly or partially made of the same diffusion as the emitter/collector regions, but which is not connected to the metallization which connects the emitter/collector regions to extermal terminals.

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IDEAL POWER INCAUSTIN TX 78735

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  • 2016 Application Filing Year
  • H01L Class
  • 27971 Applications Filed
  • 23507 Patents Issued To-Date
  • 84.05 % Issued To-Date
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Inventor Name Address # of filed Patents Total Citations
Blanchard, Richard A Los Altos, US 334 6868

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  • 5 Citation Count
  • H01L Class
  • 13.47 % this patent is cited more than
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1792827316886303131891006776342711301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +050010001500200025003000350040004500500055006000650070007500800085009000

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