Patent ID: 11908841
Assignee: ELUX, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 30:
31. A method for fabricating a back emission micro light emitting diode (microLED), the method comprising:
providing a metalorganic chemical vapor deposition (MOCVD) structure comprising a first doped semiconductor overlying a growth substrate, with a top surface in a second plane, a multiple quantum well (MQW) layer overlying the first doped semiconductor having a top surface in a third plane, and a second doped semiconductor overlying the MQW layer and having a top surface in a fourth plane, where the first and second doped semiconductors are oppositely doped with n and p type dopants;
etching the MOCVD structure to form a plurality of microLEDs;
selectively etching a MOCVD stack to form emitter areas by removing regions of the second doped semiconductor and MQW layer, and partially removing regions of the first doped semiconductor to the level of a first plane underlying the second plane;
conformally depositing an electrical insulator overlying the MOCVD stack;
selectively etching the electrical insulator creating a perimeter via and a center via;
conformally depositing a strike layer, forming a center electrode in a sixth plane overlying the center via;
etching openings to expose the strike layer overlying the center via;
filling the etched opening with metal to form an electrically conductive orientation keel overlying the strike layer center electrode;
forming a perimeter electrode have a substrate surface in at least a fifth plane overlying the first via; and,
separating the fabricated microLEDs from the growth substrate.