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US 8,796,912 B2Granted
Interdigitated multiple pixel arrays of light-emitting devices
AssigneeThe Regents of the University of California
InventorsArpan Chakraborty, Likun Shen, Umesh K. Mishra
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Abstract
The present invention discloses a plurality of interdigitated pixels arranged in an array, having a very low series-resistances with improved current spreading and improved heat-sinking. Each pixel is a square with sides of dimension l. The series resistance is minimized by increasing the perimeter of an active region for the pixels. The series resistance is also minimized by shrinking the space between a mesa and n-contact for each pixel.
Claims14
A light-emitting device, comprising:
- an interdigitated multi-pixel array comprised of a plurality of pixels,
- wherein each of the pixels is a light emitting diode and current is fed to each of the pixels from a p-bus and an n-bus, the p-bus and the n-bus include a first set of interdigitated fingers feeding current into rows of the pixels, and the p-bus and the n-bus include a second set of interdigitated fingers feeding current into each of the pixels within the rows, and
- wherein a series resistance of the array is less than or equal to a series resistance of a single light-emitting device with the same effective active area.
A method of fabricating a light-emitting device, comprising:
- fabricating an interdigitated multi-pixel array comprised of a plurality of pixels,
- wherein each of the pixels is a light emitting diode and current is fed to each of the pixels from a p-bus and an n-bus, the p-bus and the n-bus include a first set of interdigitated fingers feeding current into rows of the pixels, and the p-bus and the n-bus include a second set of interdigitated fingers feeding current into each of the pixels within the rows, and
- wherein a series resistance of the array is less than or equal to a series resistance of a single light-emitting device with the same effective active area.
Dependencies are inferred from the claim text.