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US 2006/0138445 A1Published application
Gan-based and ZnO-based LED
OwnerYongsheng Zhao, Jin-Joo Song +1inventors
InventorsYongsheng Zhao, Jin-Joo Song, Chan Choi
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Abstract
Light emitting diodes (LEDs) with various electrode structures which preferably provide increased performance. In some embodiments the LEDs are GaN-based and in some embodiments the LEDs are ZnO-based, with a sapphire substrate or a ZnO substrate. In some embodiments the LEDs are hybrid GaN-based ZnO based LEDs.
Claims25
A light emitting diode element comprising:
- a substrate, a first dopant semiconductor layer, a second dopant semiconductor layer, and a light emitting quantum well stack layer substantially between the first and the second dopant semiconductor layers;
- with the second dopant semiconductor layer, the quantum well and a portion of the first dopant semiconductor layer defining a mesa;
- a first electrode coupled to an exposed top surface of the first dopant semiconductor layer, and the first electrode having a body approximate a corner of the exposed top surface of the first dopant semiconductor layer and the wings extending from the body;
- and
- a second electrode coupled to a top of the mesa the second electrode having a body approximate a corner of the top of the mesa, and wings extending from the body.
2 more elements
A light emitting diode chip having a first contact on a first dopant layer, a second contact on a second dopant layer and a mesa pattern;
- the second dopant layer, a quantum well and a portion of the first dopant layer forming the mesa pattern on the first dopant layer and a substrate,
- the first contact being about a first corner of the chip and the second contact being about an opposing corner of the chip, with
- the first contact having an inner edge facing towards a center of the chip and an outer edge facing away from the chip, the first contact having elongated side portions, each side portion configured to extend proximate to a corresponding edge of the second corner;
- and
- the second contact having an inner edge facing towards a center of the chip and an outer edge facing away from the chip, the second contact having elongated side portions, each side portion configured to extend proximate to a corresponding edge of the second corner.
2 more elements
Dependencies are inferred from the claim text.