US 12,324,271 B2
Method of aligning light emitting elements and method of manufacturing display device using the same
Jong Hyuk Kang, Suwon-si (KR); Won Ho Lee, Suwon-si (KR); Hyun Deok Im, Seoul (KR); Jin Oh Kwag, Yongin-si (KR); Hyun Min Cho, Seoul (KR); Won Kyu Kim, Seoul (KR); and Keun Kyu Song, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/278,101
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed Jun. 10, 2019, PCT No. PCT/KR2019/006948
§ 371(c)(1), (2) Date Mar. 19, 2021,
PCT Pub. No. WO2020/060006, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 10-2018-0114341 (KR), filed on Sep. 21, 2018.
Prior Publication US 2021/0273131 A1, Sep. 2, 2021
Int. Cl. H10H 20/01 (2025.01); H01L 25/075 (2006.01)
CPC H10H 20/01 (2025.01) [H01L 25/0753 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of aligning light emitting elements, comprising:
applying a ground voltage to a first electrode and applying a first alternating current (AC) voltage to a second electrode spaced apart from the first electrode, the first AC voltage having an asymmetric waveform;
applying a ground voltage to the first electrode and applying a second AC voltage to the second electrode, the second AC voltage having a symmetric waveform; and
aligning light emitting elements between the first electrode and the second electrode, wherein
in response to a ground voltage being applied to the first electrode and a first AC voltage being applied to the second electrode spaced apart from the first electrode, an electric field formed by the first electrode and the second electrode is an asymmetric electric field in which any one of positive polarity and negative polarity is dominant.