Substrate for stressed systems and method of making same
First Claim
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1. A method of fabricating a stress absorbing microstructure assembly which comprises:
- implanting atomic species on a transfer substrate so as to provide a plane of weakness on the transfer substrate;
associating a mechanical stress absorbing system with a support substrate;
assembling the transfer substrate in a face to face orientation with the support substrate;
treating the plane of weakness to further weaken it without generating cracking of the transfer substrate; and
detaching a portion of the transfer substrate so that a second portion of the transfer substrate remains on the support substrate.
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Abstract
A stress absorbing microstructure assembly including a support substrate having an accommodation layer that has plurality of motifs engraved or etched in a surface, a buffer layer and a nucleation layer. The stress absorbing microstructure assembly may also include an insulating layer between the buffer layer and the nucleation layer. This assembly can receive thick epitaxial layers thereon with concern of causing cracking of such layers.
18 Citations
20 Claims
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1. A method of fabricating a stress absorbing microstructure assembly which comprises:
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implanting atomic species on a transfer substrate so as to provide a plane of weakness on the transfer substrate;
associating a mechanical stress absorbing system with a support substrate;
assembling the transfer substrate in a face to face orientation with the support substrate;
treating the plane of weakness to further weaken it without generating cracking of the transfer substrate; and
detaching a portion of the transfer substrate so that a second portion of the transfer substrate remains on the support substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification