Method for fabricating at least one transistor
First Claim
1. A method for fabricating transistors, each transistor comprising a plurality of epitaxial layers on a common substrate, the method comprising:
- forming a plurality of source contacts on a first surface of the plurality of epitaxial layers;
forming at least one drain contact on the first surface;
forming at least one gate contact on the first surface;
forming at least one layer of insulating material over and between the at least one gate contact, the plurality of source contacts and the at least one drain contact for insulating the at least one gate contact, the plurality of source contacts and the at least one drain contact;
forming a conductive layer over and through at least a part of the at least one insulating layer, the conductive layer connecting the plurality of source contacts;
forming at least one seed layer on the conductive layer; and
forming at least one heat sink layer over the at least one seed layer; and
wherein the at least one seed layer is configured to buffer stresses of thermal expansion caused by the at least one heat sink layer.
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Abstract
A method for fabricating transistors such as high electron mobility transistors, each transistor comprising a plurality of epitaxial layers on a common substrate, method comprising: (a) forming a plurality of source contacts on a first surface of the plurality of epitaxial layers; (b) forming at least one drain contact on the first surface; (c) forming at least one gate contact on the first surface; (d) forming at least one insulating layer over and between the gate contacts, source contacts and the drain contacts; (e) forming a conductive layer over at least a part of the at least one insulating layer for connecting the source contacts; and (f) forming at least one heat sink layer over the conductive layer.
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Citations
9 Claims
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1. A method for fabricating transistors, each transistor comprising a plurality of epitaxial layers on a common substrate, the method comprising:
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forming a plurality of source contacts on a first surface of the plurality of epitaxial layers; forming at least one drain contact on the first surface; forming at least one gate contact on the first surface; forming at least one layer of insulating material over and between the at least one gate contact, the plurality of source contacts and the at least one drain contact for insulating the at least one gate contact, the plurality of source contacts and the at least one drain contact; forming a conductive layer over and through at least a part of the at least one insulating layer, the conductive layer connecting the plurality of source contacts; forming at least one seed layer on the conductive layer; and forming at least one heat sink layer over the at least one seed layer; and wherein the at least one seed layer is configured to buffer stresses of thermal expansion caused by the at least one heat sink layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification