Patent ID: 11894488
Assignee: CREELED, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A LED chip comprising:
an active layer comprising a plurality of active layer portions configured to produce electrically activated emissions, with a plurality of streets defined through the active layer and arranged to segregate individual active layer portions of the plurality of active layer portions;
a substrate comprising a plurality of substrate portions supporting the plurality of active layer portions, wherein the substrate comprises a light-transmissive substrate material and each substrate portion comprises a light extraction surface; and
a plurality of anode-cathode pairs associated with the plurality of active layer portions;
wherein active layer portion of the plurality of active layer portions comprises a different anode-cathode pair of the plurality of anode-cathode pairs and is configured to illuminate a different substrate portion of the plurality of substrate portions and transmit light through the light extraction surface of the substrate portion, such that the plurality of active layer portions and the plurality of substrate portions form a plurality of pixels;
wherein each light extraction surface comprises a microtextured etched surface having a non-repeating, irregular textural pattern.