METHOD FOR ATTACHING MICRO LEDS TO DISPLAY BY USING FLUID AS SOFT LANDING MEDIUM FOR MICRO LEDS

WIPO Patent Application WO/2023/113198

A1

A method for attaching a plurality of micro LEDs to a display panel in a high yield is disclosed. The present invention relates to a method for attaching micro LEDs at preset mounting positions on a target substrate, comprising the steps of: (a1) disposing, at the bottom of a filled fluid, a target substrate assembly to which micro LEDs are to be attached, and preparing a water tank in which the plurality of micro LEDs float in the fluid or on the surface of the fluid on the target substrate assembly, the target substrate assembly including a target substrate and a mask, which is stacked on the surface of the target substrate and has a plurality of apertures that open positions corresponding to the preset mounting positions at which the micro LEDs are to be attached; (b1) lowering the level of the fluid in the water tank so as to lower the floating position of the plurality of micro LEDs, thereby guiding some of the plurality of micro LEDs into the plurality of apertures of the mask; and (c1) attaching, to the target substrate, some of the micro LEDs guided into the apertures.

LEE JONG HWA (KR)
LEE HEON-MIN (KR)
LEE KEUN-HO (KR)

PCT/KR2022/016150

June 22, 2023

October 21, 2022

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LABENT INC (KR)

H01L27/15; H01L23/00; H01L25/075; H01L33/36; H01L33/48

KR20210040684A	2021-04-14
KR20200014867A	2020-02-11
KR20170026956A	2017-03-09
KR20200026669A	2020-03-11
KR101814104B1	2018-01-04

HMP IP GROUP (KR)

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