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US 11,764,339 B2Granted
μ-LED, μ-LED device, display and method for the same
AssigneeOSRAM Opto Semiconductors GmbH
InventorsAndreas Biebersdorf, Laura Kreiner, Stefan Illek, Ines Pietzonka, Petrus Sundgren, Christoph Klemp, Felix Feix, Christian Berger, Ana Kanevce
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Abstract
The invention relates to various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.
Claims19
A semiconductor structure, comprising:
- an n-doped first layer;
- a p-doped second layer doped with a first dopant;
- an active layer which is disposed between the n-doped first layer and the p-doped second layer and which comprises at least one quantum well;
- wherein the active layer of the semiconductor structure is divided into a plurality of first optically active regions, at least one second region and at least one third region;
- wherein said first plurality of optically active regions are spaced apart in a hexagonal pattern;
- wherein the at least one quantum well in the active layer comprises a larger band gap in the at least one second region than in the plurality of first optically active regions and the at least one third region;
- wherein the band gap is modified in particular by quantum well intermixing;
- wherein the at least one second region encloses the plurality of first optically active regions;
- and
- wherein said at least one third region is located in spaces between said plurality of first optically active regions.
7 more elements
Dependencies are inferred from the claim text.