Light emitting diode display with redundancy scheme
AssigneeApple Inc.
InventorsAndreas Bibl, Kapil V. Sakariya, Charles R. Griggs, James Michael Perkins
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Abstract
A display panel and method of manufacture are described. In an embodiment, a display substrate includes a pixel area and a non-pixel area. An array of subpixels and corresponding array of bottom electrodes are in the pixel area. An array of micro LED devices are bonded to the array of bottom electrodes. One or more top electrode layers are formed in electrical contact with the array of micro LED devices. In one embodiment a redundant pair of micro LED devices are bonded to the array of bottom electrodes. In one embodiment, the array of micro LED devices are imaged to detect irregularities.
Claims17
A display panel redundancy scheme comprising:
- a display substrate;
- a first micro light emitting diode (LED) and a second micro LED arranged within a subpixel;
- wherein the first micro LED and the second micro LED each comprises a p-n diode, a top conductive contact, and a bottom conductive contact that is bonded to the display substrate;
- a passivation material over the second micro LED;
- and
- a top electrode layer over the first micro LED and the second micro LED, wherein the top electrode layer is in electrical contact with the first micro LED and the passivation material physically separates the top electrode layer from the top conductive contact of the second micro LED.
Dependencies are inferred from the claim text.