Light emitting device
AssigneeLG Innotek Co., Ltd.
InventorTae Yun Kim
Life of this patent
Estimating the term…
Abstract
Disclosed is a light emitting device. A light emitting device comprises a plurality of N-type semiconductor layers including a first N-type semiconductor layer and a second N-type semiconductor layer on the first N-type semiconductor layer, an active layer on the second N-type semiconductor layer, and a P-type semiconductor layer on the active layer, wherein the first N-type semiconductor layer comprises a Si doped Nitride layer and the second N-type semiconductor layer comprises a Si doped Nitride layer, and wherein the first and second N-type semiconductor layers have a Si impurity concentration different from each other.
Claims20
A light emitting device comprising:
- a substrate;
- at least two n-type semiconductor layers on the substrate, each of the at least two n-type semiconductor layers having a different Si concentration;
- a first n-type semiconductor layer on the at least two n-type semiconductor layers, the first n-type semiconductor layer having less Si concentration than 5×1018/cm3;
- an active layer directly on the first n-type semiconductor layer;
- a p-type semiconductor layer on the active layer;
- and
- an electrode on the p-type semiconductor layer.
A light emitting device comprising:
- at least two n-type semiconductor layers, each of the at least two n-type semiconductor layers having a different Si concentration;
- an undoped GaN layer on a top surface of the at least two n-type semiconductor layers;
- a first n-type semiconductor layer on the at least two n-type semiconductor layers, the first n-type semiconductor layer having less Si concentration than 5×1018/cm3;
- an active layer directly on a first portion of the first n-type semiconductor layer;
- a p-type semiconductor layer on the active layer;
- a first electrode on a second portion of the first n-type semiconductor layer;
- a second electrode on the p-type semiconductor layer.
Dependencies are inferred from the claim text.