Light-emitting device
AssigneeEpistar Corporation
InventorsChien-Fu HUANG, Shiuan-Leh LIN, Chih-Chiang LU, Chia-Liang HSU
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Abstract
The present disclosure provides a light-emitting device. The light-emitting device comprises: a substrate; an intermediate layer on the substrate; a first window layer comprising a first semiconductor optical layer on the intermediate layer and a second semiconductor optical layer on the first semiconductor optical layer; and a light-emitting stack on the second semiconductor optical layer; wherein a difference between the lattice constant of the intermediate layer and the lattice constant of the first semiconductor optical layer is greater than 2.3 Å.
Claims20
A light-emitting device, comprising:
- a substrate;
- an intermediate layer on the substrate;
- a first window layer comprising a first semiconductor optical layer on the intermediate layer and a second semiconductor optical layer on the first semiconductor optical layer;
- and
- a light-emitting stack on the second semiconductor optical layer;
- wherein a difference between the lattice constant of the intermediate layer and the lattice constant of the first semiconductor optical layer is greater than 2.3 Å.
Dependencies are inferred from the claim text.