The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2024
Filed:
Apr. 30, 2020
Applicant:
Wuhan China Star Optoelectronics Technology Co., Ltd, Hubei, CN;
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/66 (2006.01); H01L 33/00 (2010.01); H01L 25/075 (2006.01); H01L 25/16 (2023.01); H01L 25/00 (2006.01);
U.S. Cl.
CPC ...
H01L 22/22 (2013.01); H01L 25/0753 (2013.01); H01L 25/167 (2013.01); H01L 25/50 (2013.01); H01L 33/005 (2013.01);
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.