Micro-transfer-printable flip-chip structures and methods
First Claim
1. A semiconductor structure suitable for transfer printing, comprising:
- a handle substrate;
a cured bonding layer disposed in contact with the handle substrate;
a capping layer disposed in contact with the bonding layer;
a patterned release layer disposed in contact with the capping layer; and
a completed semiconductor device disposed on or over the patterned release layer and attached to an anchor disposed on the handle substrate with at least one tether,wherein the at least one tether is in a common plane with an exposed entry path to the patterned release layer.
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Abstract
In certain embodiments, a method of making a semiconductor structure suitable for transfer printing (e.g., micro-transfer printing) includes providing a support substrate and disposing and processing one or more semiconductor layers on the support substrate to make a completed semiconductor device. A patterned release layer and, optionally, a capping layer are disposed on or over the completed semiconductor device and the patterned release layer or capping layer, if present, are bonded to a handle substrate with a bonding layer. The support substrate is removed to expose the completed semiconductor device and, in some embodiments, a portion of the patterned release layer. In some embodiments, an entry path is formed to expose a portion of the patterned release layer. In some embodiments, the release layer is etched and the completed semiconductor devices transfer printed (e.g., micro-transfer printed) from the handle substrate to a destination substrate.
285 Citations
25 Claims
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1. A semiconductor structure suitable for transfer printing, comprising:
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a handle substrate; a cured bonding layer disposed in contact with the handle substrate; a capping layer disposed in contact with the bonding layer; a patterned release layer disposed in contact with the capping layer; and a completed semiconductor device disposed on or over the patterned release layer and attached to an anchor disposed on the handle substrate with at least one tether, wherein the at least one tether is in a common plane with an exposed entry path to the patterned release layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification