Patent ID: 11887899
Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 6:
7. The repairing method of claim 6, wherein the step of “transferring a plurality of backup micro-LED chips to the substrate by a fluid mass transfer method, so that the backup recess in each of the sub-pixel areas where the defective pixel is detected is loaded with one of the backup micro-LED chips” includes steps of: providing a second photomask, wherein the second photomask is provided with a plurality of second through holes, the plurality of second through holes are respectively provided corresponding to all of the backup recesses, and a shape and a size of each of the second through holes is adapted to a cross-sectional shape and a cross-sectional size of the corresponding backup recess; covering a side of the substrate provided with the backup recess using the second photomask; performing exposure and development on the positive photoresists in all of the repair recesses to remove the positive photoresists in all of the repair recesses; removing the second photomask; and providing a backup suspension containing the plurality of the backup micro-LED chips so that the backup suspension flows through the side of the substrate provided with the backup recess, so that each of the repair recesses is loaded with one of the backup micro-LED chips.