LEDs with three color RGB pixels for displays
First Claim
1. A device comprising:
- a substrate; and
a color LED pixel disposed on the substrate, the color LED pixel comprisesa red LED, the red LED comprisinga red LED body disposed on a red region on the substrate,a red multiple quantum well (MQW) on the red LED body, anda red top LED layer disposed over the red MQW,a green LED, the green LED comprisinga green LED body disposed on a green region on the substrate,a green MQW on the green LED body, anda green top LED layer disposed over the green MQW,a blue LED, the blue LED comprisinga blue LED body disposed on a blue region on the substrate,a blue MQW on the blue LED body, anda blue top LED layer disposed over the blue MQW, and whereinthe MQWs of the red LED, green LED and blue LED comprise at least an indium gallium nitride (InxGa1−
xN) layer and a gallium nitride (GaN), where x is the atomic percentage of In in the InxGa1−
xN layer, andthe MQWs of the red LED, green LED and blue LED have different bandgaps by varying x of the InxGa1−
xN layer in the red LED, the green LED and the blue LED.
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Accused Products
Abstract
Devices and methods of forming the devices are disclosed. The device includes a substrate and a color LED pixel disposed on the substrate. The color LED pixel includes a red LED, a green LED and a blue LED. Each of the color LED includes a specific color LED body disposed on the respective color region on the substrate, a specific color multiple quantum well (MQW) on the respective color LED body and a specific color top LED layer disposed over the respective color MQW. The MQWs of the red LED, green LED and blue LED includes at least an indium gallium nitride (InxGa1−xN) layer and a gallium nitride (GaN), where x is the atomic percentage of In in the InxGa1−xN layer, and the MQWs of the red LED, green LED and blue LED have different bandgaps by varying x of the InxGa1−xN layer in the red LED, the green LED and the blue LED.
3 Citations
20 Claims
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1. A device comprising:
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a substrate; and a color LED pixel disposed on the substrate, the color LED pixel comprises a red LED, the red LED comprising a red LED body disposed on a red region on the substrate, a red multiple quantum well (MQW) on the red LED body, and a red top LED layer disposed over the red MQW, a green LED, the green LED comprising a green LED body disposed on a green region on the substrate, a green MQW on the green LED body, and a green top LED layer disposed over the green MQW, a blue LED, the blue LED comprising a blue LED body disposed on a blue region on the substrate, a blue MQW on the blue LED body, and a blue top LED layer disposed over the blue MQW, and wherein the MQWs of the red LED, green LED and blue LED comprise at least an indium gallium nitride (InxGa1−
xN) layer and a gallium nitride (GaN), where x is the atomic percentage of In in the InxGa1−
xN layer, andthe MQWs of the red LED, green LED and blue LED have different bandgaps by varying x of the InxGa1−
xN layer in the red LED, the green LED and the blue LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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providing a substrate; and forming a color LED pixel on the substrate, wherein forming the color LED pixel comprises forming a red LED, the red LED comprising a red LED body disposed on a red region on the substrate, a red multiple quantum well (MQW) on the red LED body, and a red top LED layer disposed over the red MQW, forming a green LED, the green LED comprising a green LED body disposed on a green region on the substrate, a green MQW on the green LED body, and a green top LED layer disposed over the green MQW, forming a blue LED, the blue LED comprising a blue LED body disposed on a blue region on the substrate, a blue MQW on the blue LED body, and a blue top LED layer disposed over the blue MQW, and wherein the MQWs of the red LED, green LED and blue LED comprises at least an indium gallium nitride (InxGa1−
xN) layer and a gallium nitride (GaN), where x is the atomic percentage of In in the InxGa1−
xN layer, andthe MQWs of the red LED, green LED and blue LED have different bandgaps by varying x of the InxGa1−
xN layer in the red LED, the green LED and the blue LED. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification