Title:
METHOD FOR MANUFACTURING MICRO-LED DISPLAY PANEL
Document Type and Number:
WIPO Patent Application WO/2019/194446
Kind Code:
A1
Abstract:
Disclosed is a method for manufacturing a micro-LED display panel. The method for manufacturing a micro-LED display panel comprises the steps of: preparing a substrate having electrode pads formed on a main surface thereof, the electrode pads having a width of 50-100㎛; arranging a mask on the substrate, the mask having openings which are formed therein and have a width of 50-100㎛ to allow the electrode pads to be exposed therethrough; filling the openings with a solder paste including solder powder, an adhesive resin and an activator; forming solder bumps in contact with the electrode pads by using the solder paste filled in the openings; and bonding micro-LED chips to the substrate by the solder bumps, wherein the solder paste filled in the openings may be first solder powder having a particle diameter of 10-25㎛ or a mixture of the first solder powder and second solder powder having a particle diameter of 5-15㎛.
Inventors:
KIM WOOCHUL (KR)
Application Number:
PCT/KR2019/003472
Publication Date:
October 10, 2019
Filing Date:
March 26, 2019
Export Citation:
Assignee:
LUMENS CO LTD (KR)
International Classes:
H01L27/15; H01L33/00; H01L33/36; H01L33/62
Domestic Patent References:
| WO2017164484A1 | 2017-09-28 | |||
| WO2016039593A1 | 2016-03-17 |
Foreign References:
| KR100765146B1 | 2007-10-12 | |||
| JP2008124076A | 2008-05-29 | |||
| KR20170084544A | 2017-07-20 |
Attorney, Agent or Firm:
RYU, Changyeol (KR)
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