Patent ID: 11953728
Assignee: ROCKLEY PHOTONICS LIMITED
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 19:
20. An optoelectronic device comprising:
a precursor photonic device comprising:
a substrate;
a bonding region, for receiving and bonding to a transfer die; and
a plurality of alignment marks, for use in transfer printing, said alignment marks being located in or adjacent to the bonding region,
wherein the optoelectronic device further comprises a transfer die comprising a photonic device, said photonic device having a bonding surface suitable for bonding to a precursor photonic device,
wherein the transfer die includes a plurality of alignment marks, for use in a transfer-print process, wherein each of the plurality of alignment marks of the transfer die is selected from two or more different types of alignment marks, and
wherein the alignment marks of the transfer die are voids in the transfer die which extend entirely through the transfer die.