Light emitting diode display with redundancy scheme
AssigneeApple Inc.
InventorsAndreas Bibi, 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.
Claims18
A display panel redundancy scheme comprising:
- an array of micro controller chips;
- an array of micro light emitting diode (LED) pairs connected with the array of micro controller chips in an array of pixel areas;
- wherein each pixel area includes a micro controller chip connected to a corresponding group of micro LED pairs arranged in a plurality of subpixels;
- wherein the group of micro LED pairs includes a group of primary micro LEDs arranged in the plurality of subpixels, and a group of redundant micro LEDs arranged in the plurality of subpixels such that each subpixel includes a micro LED pair;
- wherein each primary micro LED and each redundant micro LED is a separate device that has a maximum width of 1 to 100 μm;
- and
- wherein each primary micro LED and each redundant micro LED comprises a p-n diode, a top conductive contact, and a bottom conductive contact that is bonded to a display substrate.
Dependencies are inferred from the claim text.