Patent ID: 11901477
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A semiconductor processing method comprising:
forming an LED structure on a substrate layer, wherein the LED structure includes contact pads;
forming a first portion of a light absorption barrier on the LED structure and the substrate layer, wherein forming the light absorption barrier leaves exposed at least a portion of the contact pads, and the light absorption barrier is operable to absorb greater than or about 50% of light at wavelengths shorter than or about 300 nm;
forming at least one additional portion of the light absorption barrier on the first portion of the light absorption barrier;
forming a reflective layer on the light absorption barrier, wherein the light absorption barrier is between the LED structure and the reflective layer, the reflective layer is operable to reflect light emitted form the LED structure that passes through the light absorption barrier, and forming the reflective layer exposes that at least a portion of the contact pads;
exposing the substrate layer to ultraviolet light, wherein the ultraviolet light is absorbed by exposed portions of the light absorption barrier; and
separating the LED structure from the substrate layer.