公开(公告)号：US11887899B2

公开(公告)日：2024-01-30

申请号：US16959165

申请日：2020-04-30

Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD

Inventor： Lei Xu ,  Guowei Zha ,  Li Zhong

IPC: H01L21/66 ,  H01L33/00 ,  H01L25/075 ,  H01L25/16 ,  H01L25/00

CPC classification number: H01L22/22 ,  H01L25/0753 ,  H01L25/167 ,  H01L25/50 ,  H01L33/005

Abstract: A repairing method for micro-LED chip defective pixels is disclosed. By providing a main recess and a backup recess in each of sub-pixel areas of a substrate, wherein each of the main recesses is loaded with a main micro-LED chip, when all of the main micro-LED chips are detected for defective pixels, the backup recess in each of the sub-pixel areas where the defective pixel is detected is loaded with a backup micro-LED chip using a fluid mass transfer method, which improves the repair efficiency.