Light emitting diode and method for manufacturing the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsDoo Go Baik, Bang Won Oh, Hak Kyu Kim
Life of this patent
Estimating the term…
Abstract
A light emitting diode (LED) includes a substrate, a first conductive clad layer formed on the substrate, an active layer formed on the first conductive clad layer, a second conductive clad layer formed on the active layer, an alumina (Al2O3) layer formed on the lower surface of the substrate, and an aluminum layer formed on the lower surface of the alumina (Al2O3) layer. The substrate may be removed, and the aluminum layer and the alumina layer are formed directly on the lower surface of the first conductive clad layer.
Claims5
A light emitting diode, comprising:
- a sapphire substrate;
- a first conductive clad layer formed on the substrate;
- an active layer formed on the first conductive clad layer;
- a second conductive clad layer formed on the active layer;
- an alumina (Al2O3)layer formed on the lower surface of the substrate;
- an aluminum layer formed on the lower surface of the alumina (Al2O3) layer;
- a glass layer formed on the lower surface of the aluminum layer;
- and
- another alumina (Al2O3) layer formed between the aluminum layer and the glass layer.
A light emitting diode, comprising:
- a sapphire substrate;
- a first conductive clad layer formed on the substrate;
- an active layer formed on the first conductive clad layer;
- a second conductive clad layer formed on the active layer;
- an alumina (Al2O3) layer formed on the lower surface of the substrate;
- an aluminum layer formed on the lower surface of the alumina (Al2O3) layer;
- a high reflectivity structure that is formed on the lower surface of the substrate and includes two layers with different reflectivities, thereby exhibitina a blab reflectivity, wherein the two layers of the high reflector structure include said alumina (Al2O3) layer formed on the lower surface of the substrate and said aluminum layer formed on the lower surface of the alumina (Al2O3) layer;
- a glass layer formed on the lower surface of the aluminum layer;
- and
- another alumina (Al2O3) layer formed between the aluminum layer and the glass layer.
A light emitting diode, comprising:
- first and second reflective layers having different reflectivities, said second reflective layer being positioned on top of the first reflective layer and defining together with said first reflective layer a reflective structure;
- a sapphire substrate positioned on to of the second reflective layer;
- a first conductive clad layer positioned on top of the substrate;
- an active layer positioned on top of the first conductive clad layer;
- a second conductive clad layer positioned on top of the active layer;
- and
- a glass layer;
- wherein
- the first reflective layer is an aluminum layer and the second reflective layer is an alumina (Al2O3) layer positioned on top of the aluminum layer to define said reflective structure;
- and
- said aluminum layer is positioned on top of said glass layer;
- said light emitting diode further comprising another alumina (Al2O3) layer positioned between the aluminum layer and the glass layer.
Dependencies are inferred from the claim text.