Semiconductor device with heat radiator
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasataka Deguchi
Life of this patent
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Abstract
A first inner heat conductor may include a plurality of first graphite layers. A second inner heat conductor may include a plurality of second graphite layers. The plurality of first graphite layers may be stacked in a first direction which is orthogonal to a direction in which a semiconductor element and a first heat radiator are arranged. The plurality of second graphite layers may be stacked in the direction in which the semiconductor element and the first heat radiator are arranged, or may be stacked in a second direction which is orthogonal to the direction in which the semiconductor element and the first heat radiator are arranged and orthogonal to the first direction.
Claims5
A semiconductor device comprising:
- a semiconductor element;
- and
- a first heat radiator connected to a first surface of the semiconductor element,
- wherein
- the first heat radiator comprises:
- a first outer heat conductor constituted of metal and connected to the first surface of the semiconductor element;
- a first inner heat conductor disposed in the first outer heat conductor;
- and
- a second inner heat conductor disposed in the first outer heat conductor and stacked on the first inner heat conductor in a direction in which the semiconductor element and the first heat radiator are arranged,
- the first inner heat conductor comprises a plurality of first graphite layers,
- the second inner heat conductor comprises a plurality of second graphite layers,
- the plurality of first graphite layers is stacked in a first direction which is orthogonal to the direction in which the semiconductor element and the first heat radiator are arranged, and
- the plurality of second graphite layers is stacked in the direction in which the semiconductor element and the first heat radiator are arranged, or is stacked in a second direction which is orthogonal to the direction in which the semiconductor element and the first heat radiator are arranged and orthogonal to the first direction.
Dependencies are inferred from the claim text.