Light emitting diode
First Claim
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1. A light emitting diode, comprising:
- a substrate having a first side and a second side;
an electrode, on the second side of the substrate;
a distributed Bragg reflector, on the first side of the substrate;
a first conductive type confining layer, on the distributed Bragg reflector;
an active layer, on the first conductive type confining layer;
a second conductive type confining layer, on the active layer;
a current spreading layer, on the second conductive type confining layer;
a meshed Ohmic contact layer, on the current spreading layer;
a transparent conductive oxide layer, on the meshed Ohmic contact layer; and
a front side electrode, on a portion of the transparent conductive oxide layer.
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Abstract
A light emitting diode. The light emitting diode has a substrate that has two surfaces. On one surface, a distributed Bragg reflector, an n-type confining layer, an active layer, a p-type confining layer, a current spreading layer, a meshed Ohmic contact layer, a transparent conductive oxide layer and a front side electrode are formed. The other surface has a rear side electrode formed thereon. Via the meshed structure, the absorbing area of the Ohmic contact layer is reduced to avoid the light emitting from the active layer being greatly absorbed by the Ohmic contact layer. In contrast, the light intensity of the light emitting diode is increased.
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Citations
23 Claims
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1. A light emitting diode, comprising:
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a substrate having a first side and a second side;
an electrode, on the second side of the substrate;
a distributed Bragg reflector, on the first side of the substrate;
a first conductive type confining layer, on the distributed Bragg reflector;
an active layer, on the first conductive type confining layer;
a second conductive type confining layer, on the active layer;
a current spreading layer, on the second conductive type confining layer;
a meshed Ohmic contact layer, on the current spreading layer;
a transparent conductive oxide layer, on the meshed Ohmic contact layer; and
a front side electrode, on a portion of the transparent conductive oxide layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light emitting diode, comprising:
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a substrate having a first side and a second side;
an electrode, on the second side of the substrate;
a distributed Bragg reflector, on the first side of the substrate;
a first conductive type confining layer, on the distributed Bragg reflector;
an active layer, on the first conductive type confining layer;
a second conductive type confining layer, on the active layer;
a meshed Ohmic contact layer, on the second conductive type confining layer;
a transparent conductive oxide layer, on the meshed Ohmic contact layer; and
a front side electrode, on the transparent conductive oxide layer. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A light emitting diode, comprising:
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a substrate having a first side and a second side;
an electrode, on the second side of the substrate;
a distributed Bragg reflector, on the first side of the substrate;
a first conductive type confining layer, on the distributed Bragg reflector;
an active layer, on the first conductive type confining layer;
a second conductive type confining layer, on the active layer;
a current spreading layer, on the second conductive confining layer;
a meshed Ohmic contact layer, on the current spreading layer, wherein the meshed Ohmic contact layer has a first thickness and a plurality of gridlines of a first width, the gridlines spaced with-from each other by a second width;
a transparent conductive oxide layer, on the meshed Ohmic contact layer; and
a front side electrode, on the transparent conductive oxide layer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification