Method for manufacturing display device

Patent metadata

Field	Value
Publication number	US-12469731-B2
Application number	US-202018023998-A
Country	US
Kind code	B2
Filing date	Sep 22, 2020
Priority date	Sep 22, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A method for manufacturing a display device according to the present invention is characterized by comprising the steps of: supplying semiconductor light-emitting elements in a first chamber containing a fluid; disposing a distribution device, in which a plurality of magnets are arranged, on one side of the first chamber; rotating the distribution device such that the semiconductor light-emitting elements form a continuous pattern along the arrangement direction of the plurality of magnets; and stopping the distribution device such that the semiconductor light-emitting elements are distributed to a plurality of dummies, wherein in the step of stopping the distribution device, the plurality of dummies are formed at positions corresponding to the plurality of magnets.

First claim

The invention claimed is:

1 . A method for manufacturing a display device, the method comprising:
supplying semiconductor light-emitting elements into a chamber containing a fluid; disposing a distribution device including a plate on which a plurality of magnets are arranged, at one side of a first chamber; rotating the distribution device so that the semiconductor light-emitting elements form a continuous pattern along an arrangement direction of the plurality of magnets; and stopping the distribution device so that the semiconductor light-emitting elements are distributed into a plurality of piles, wherein in the stopping the distribution device, the plurality of piles are formed at positions corresponding to the plurality of magnets, and wherein the plurality of magnets are arranged along a circumference of the plate.

2 . The method of claim 1 , wherein the plurality of magnets are arranged at predetermined distances, and the disposing the distribution device, on which the plurality of magnets are arranged, at the one side of the first chamber is performed to arrange the distribution device that includes the plate, and a rotational shaft extending from a center of the plate in a direction perpendicular to the plate.

3 . The method of claim 2 , wherein the disposing the distribution device, on which the plurality of magnets are arranged, at the one side of the first chamber comprises:
disposing a temporary substrate made of glass on the one side of the first chamber; arranging the distribution device so that the plurality of magnets face the temporary substrate; and bringing the plurality of magnets into contact with temporary substrate.

4 . The method of claim 2 , wherein the rotating the distribution device is performed to rotate the plate in one direction centering on the rotational shaft.

5 . The method of claim 2 ,
wherein in the rotating the distribution device, the semiconductor light-emitting elements form a continuous pattern having a predetermined thickness along the circumference of the plate.

6 . The method of claim 3 , wherein a contact state between the plurality of magnets and the temporary substrate is maintained while the rotating the distribution device is in progress.

7 . The method of claim 2 , wherein the plurality of magnets are arranged at distances greater than a diameter of each magnet.

8 . The method of claim 1 , wherein the supplying semiconductor light-emitting elements into the first chamber containing a fluid is performed to supply the semiconductor light-emitting elements in a pile form to at least one position.

9 . The method of claim 1 , further comprising measuring volumes of the plurality of piles formed by distributing the semiconductor light-emitting elements,
wherein the rotating the distribution device is performed again when a deviation of the measured volumes among the plurality of piles is 5% or more.

10 . The method of claim 1 , further comprising transferring the plurality of piles formed by distributing the semiconductor light-emitting elements to a second chamber containing a fluid.

11 . The method of claim 1 , wherein adjacent magnets to one magnet of the plurality of magnets are located a same distance away from the one magnet.

12 . The method of claim 1 , wherein a number of the plurality of magnets is even.

13 . The method of claim 1 , wherein each magnet of the plurality of magnets is located a same distance away from a closest edge of the plate.

14 . The method of claim 1 , wherein no magnet is located at a center area of the plate.

15 . The method of claim 1 , wherein the plurality of magnets are only located at an edge portion of the plate.

Assignees

• Lg Electronics Inc

Inventors

• Shin Yongil
• Lee Jinhyung
• Kim Dohee
• Yang Dohwan
• Kim Kisu

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W72/0198 Primary

  batch processes · CPC title

• H10P72/50 Primary

  for positioning, orientation or alignment · CPC title

• H10P72/74

  using temporarily an auxiliary support · CPC title

• H10P72/7428

  used to support diced chips prior to mounting · CPC title