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Semiconductor device

  • US 10,373,976 B2
  • Filed: 06/20/2014
  • Issued: 08/06/2019
  • Est. Priority Date: 07/05/2013
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a bulk substrate having an upper surface;

    an insulator layer directly on a portion but not all of the upper surface of the bulk substrate so as to leave a bulk region uncovered by the insulator layer, the bulk region being outside of a periphery of the insulator layer, the insulator layer having an element separation region received within a recess in the upper surface, the element separation region surrounding an element formation region of the semiconductor device and laterally separating and isolating the element formation region of the semiconductor device from the bulk region along the upper surface;

    a semiconductor layer on the insulator layer and within the element formation region;

    a first transistor on the semiconductor layer, the first transistor including a gate and first source and drain regions in the semiconductor layer, the first source and drain regions each being of a first conductivity type;

    a thermally conductive path linking the semiconductor layer and the bulk region, the thermally conductive path including a thermally conductive layer; and

    an interruption structure adjacent to and in series with the first transistor, not isolated from the first transistor along the semiconductor layer, and configured and connected to selectively interrupt a flow of a current between the first transistor and the thermally conductive path, the thermally conductive path bridging over the recess and overlapping the periphery of the insulator layer.

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