METHOD OF FABRICATING A LIGHT EMITTING DIODE DISPLAY WITH INTEGRATED DEFECT DETECTION TEST
First Claim
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1. A method of forming a display panel comprising:
- electrostatically transferring an array of micro LED devices from one or more carrier substrates to a corresponding array of bottom electrodes within a corresponding array of subpixels on a display substrate;
imaging a surface of the display substrate to detect irregularities in the array of micro LED devices; and
forming a passivation layer material over a plurality of irregularities to electrically insulate the plurality of irregularities.
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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.
233 Citations
29 Claims
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1. A method of forming a display panel comprising:
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electrostatically transferring an array of micro LED devices from one or more carrier substrates to a corresponding array of bottom electrodes within a corresponding array of subpixels on a display substrate; imaging a surface of the display substrate to detect irregularities in the array of micro LED devices; and forming a passivation layer material over a plurality of irregularities to electrically insulate the plurality of irregularities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification