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US 8,710,528 B2Granted
Light emitting device
AssigneeLG Innotek Co., Ltd.
InventorJeong Soon Yim
Life of this patent
Estimating the term…
Abstract
A light emitting device including a substrate, a first conductive semiconductor layer on the substrate, an active layer on the first conductive semiconductor layer, a second conductive semiconductor layer on the active layer, and a reflective layer under the substrate and including a light reflection pattern configured to reflect light emitted by the active layer in directions away from the reflective layer.
Claims19
A light emitting device, comprising:
- a substrate;
- a first conductive semiconductor layer on the substrate;
- an active layer on the first conductive semiconductor layer;
- a second conductive semiconductor layer on the active layer;
- a reflective layer under the substrate and including a plurality of first projections configured to reflect light emitted by the active layer in directions away from the reflective layer;
- and
- a plurality of second projections on the substrate,
- wherein an upper surface of the reflective layer has a width wider than that of a lower surface of the active layer,
- wherein an entire lower surface of the reflective layer is located at a lower position than that of a lower surface of the substrate, and
- wherein the reflective layer is formed of a metal layer and is directly contacted with the lower surface of the substrate.
7 more elements
A light emitting device, comprising:
- a reflective layer;
- a first conductive semiconductor layer on the reflective layer;
- a substrate disposed between the reflective layer and the first conductive semiconductor layer;
- a resin layer disposed between the reflective layer and the substrate;
- an active layer on the first conductive semiconductor layer;
- a second conductive semiconductor layer on the active layer;
- a first electrode on the first conductive semiconductor layer;
- and
- a second electrode on the second conductive semiconductor layer,
- wherein the reflective layer includes a plurality of first projections projecting from an upper surface of the reflective layer,
- wherein the reflective layer includes a metal layer,
- wherein the resin layer is contacted with the substrate and the reflective layer,
- wherein the resin layer is located at a lower position than a lower surface of the substrate, and
- wherein an entire lower surface of the reflective layer is located at a lower position than that of the lower surface of the substrate.
11 more elements
A light emitting device, comprising:
- a reflective layer;
- a first conductive semiconductor layer on the reflective layer;
- a substrate between the reflective layer and the first conductive semiconductor layer;
- a resin layer disposed between the reflective layer and the substrate;
- an active layer on the first conductive semiconductor layer;
- a second conductive semiconductor layer on the active layer;
- a light extraction pattern on the second conductive semiconductor layer;
- a first electrode on the first conductive semiconductor layer;
- and
- a second electrode on the second conductive semiconductor layer,
- wherein the reflective layer includes a light reflective pattern projecting from a surface of the reflective layer,
- wherein the reflective layer covers an entire lower surface of the substrate,
- wherein the reflective layer includes a metal layer,
- wherein the resin layer is contacted with the substrate and the reflective layer, and
- wherein the light reflective pattern is located at a lower position than the entire lower surface the substrate.
12 more elements
Dependencies are inferred from the claim text.