High efficiency light emitting diode
First Claim
1. A light emitting diode (LED), comprising:
- a semiconductor stack disposed on a substrate, the semiconductor stack comprising;
a roughened upper surface;
a first compound semiconductor layer;
a second compound semiconductor layer;
an active layer disposed between the first compound semiconductor layer and the second compound semiconductor layer; and
openings that extend through the first compound semiconductor layer and the active layer, and expose a portion of the second compound semiconductor layer;
an insulating layer disposed on the substrate and contacting sidewalls of the openings;
a second electrode disposed on the substrate and electrically connected to the second compound semiconductor layer; and
a bonding pad contacting a portion of the second electrode that extends outside of the semiconductor stack.
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Accused Products
Abstract
Provided is a high-efficiency light emitting diode (LED) that includes: a support substrate; a semiconductor stack positioned on the support substrate, the semiconductor stack including a p-type compound semiconductor layer, an active layer, and an n-type compound semiconductor layer; a first electrode positioned between the support substrate and the semiconductor stack and in ohmic contact with the semiconductor stack; a first bonding pad positioned on a portion of the first electrode that is exposed outside of the semiconductor stack; and a second electrode positioned on the semiconductor stack. Protrusions are formed on exposed surfaces of the semiconductor stack. In addition, the second electrode may be positioned between the first electrode and the support substrate and contacted with the n-type compound semiconductor layer through openings of the semiconductor stack.
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Citations
17 Claims
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1. A light emitting diode (LED), comprising:
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a semiconductor stack disposed on a substrate, the semiconductor stack comprising; a roughened upper surface; a first compound semiconductor layer; a second compound semiconductor layer; an active layer disposed between the first compound semiconductor layer and the second compound semiconductor layer; and openings that extend through the first compound semiconductor layer and the active layer, and expose a portion of the second compound semiconductor layer; an insulating layer disposed on the substrate and contacting sidewalls of the openings; a second electrode disposed on the substrate and electrically connected to the second compound semiconductor layer; and a bonding pad contacting a portion of the second electrode that extends outside of the semiconductor stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A light emitting diode (LED), comprising:
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a semiconductor stack disposed on a support substrate, the semiconductor stack comprising; a roughened upper surface; a first compound semiconductor layer; a second compound semiconductor layer; an active layer disposed between the first compound semiconductor layer and the second compound semiconductor layer; and openings that extend through the first compound semiconductor layer and the active layer and only partially through the second compound semiconductor layer, the openings exposing a portion of the second compound semiconductor layer; an insulating layer disposed on the substrate and contacting sidewalls of the openings; a first electrode disposed on the insulating layer and contacting the first compound semiconductor layer; and a second electrode disposed on the insulating layer and electrically connected to the second compound semiconductor layer. - View Dependent Claims (16, 17)
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Specification