Granted Patent B2

US 12,394,648 · App. 17/506,154 · Granted Aug 19, 2025

Inventors: Hyunjoon Kim (Seoul, KR); Seogwoo Hong (Yongin-si, KR); Kyungwook Hwang (Seoul, KR); Junsik Hwang (Hwaseongi-si, KR); Dongho Kim (Seoul, KR); Joonyong Park (Suwon-si, KR)

Assignee: SAMSUNG ELECTRONICS CO., LTD.

H01L21/67333B65G47/90H10H20/819H10H20/857

Abstract

Claims (83)

1. A display transfer structure comprising:

a substrate comprising a plurality of wells; and

a plurality of light emitting elements disposed in the plurality of wells,

wherein the plurality of light emitting elements have a rotationally asymmetric planar shape,

wherein the plurality of wells respectively have a planar shape different from a planar shape of each of the plurality of light emitting elements,

wherein a first well of the plurality of wells comprises a first area and a second area partially overlapping each other,

wherein a first light emitting element among the plurality of light emitting elements is disposed in the first area or the second area,

wherein the first area and the second area respectively have a planar shape corresponding to a planar shape of the first light emitting element,

wherein the first area and the second area are connected each other and a size and a shape of the first area is same as a shape and a size of the second area,

wherein the first well and a second well among the plurality of wells that are adjacent to each other are included in a subpixel,

wherein the first well and the second well are disposed in an arc shape with respect to a predetermined central axis perpendicular to the substrate, and

wherein a first electrode pad and a second electrode pad of the substrate have an arc shape or ring shape with respect to the predetermined central axis.

2. The display transfer structure of claim 1 , wherein the first area of the first well is oriented in a first direction,

wherein the second area of the first well is oriented in a second direction, and

wherein the first light emitting element is oriented in the first direction or the second direction based on the first area or the second area in which the first light emitting element is disposed.

3. The display transfer structure of claim 1 , wherein the first well further comprises a third area partially overlapping with the second area,

wherein the first light emitting element is disposed in the first area, and

wherein a second light emitting element among the plurality of light emitting elements is disposed in the third area.

4. The display transfer structure of claim 1 , wherein at least one of the plurality of light emitting elements comprises a first electrode and a second electrode spaced apart from each other,

wherein a plurality of first electrode pads and a plurality of second electrode pads are disposed on the substrate and spaced apart from each other,

wherein one of the plurality of first electrode pads is electrically connected to the first electrode, and

wherein one of the plurality of second electrode pads is electrically connected to the second electrode.

5. The display transfer structure of claim 1 , wherein the first well and the second well are rotationally symmetric with respect to the predetermined central axis perpendicular to the substrate, and

wherein the first electrode pad and the second electrode pad disposed in the first well are rotationally symmetrical to a first pad and the second electrode pad disposed in the second well with respect to the predetermined central axis.

6. The display transfer structure of claim 1 ,

wherein the second area is an area in which the first area is rotated by a first angle in a counter-clockwise direction with respect to a specific rotation point, and

wherein the first light emitting element among the plurality of light emitting elements is disposed on an area where the first area and the second area overlap.

7. The display transfer structure of claim 6 , wherein the first area is oriented in a first direction,

wherein the second area is oriented in a second direction in which the first direction is rotated by the first angle,

wherein the first light emitting element is oriented and disposed in a direction rotated by a second angle from the first direction, and

wherein the second angle is an angle between 0 degrees and the first angle.

8. The display transfer structure of claim 1 , wherein the second area is an area in which the first area is moved in parallel by a first distance in a specific direction,

wherein the first light emitting element among the plurality of light emitting elements is disposed on an area where the first area and the second area overlap,

wherein the first area and the second area are oriented in a first direction, and

wherein the first light emitting element is oriented and disposed in the first direction.

9. The display transfer structure of claim 1 , wherein the first light emitting element has a tapered planar shape,

wherein the first well has a tapered planar shape with taper per inch equal to or greater than taper per inch of the planar shape of the first light emitting element, and

wherein a smaller surface and a larger surface among surfaces intersecting a taper centerline of the first light emitting element are respectively disposed to face a smaller surface and a larger surface among surfaces intersecting a taper centerline of the first well.

10. The display transfer structure of claim 1 , wherein a plane of at least one light emitting element among the plurality of light emitting elements has a trapezoidal shape, a center cut sector shape, or a polygonal shape.

11. The display transfer structure of claim 1 , wherein a planar shape of at least one light emitting element among the plurality of light emitting elements is a trapezoidal shape or a sector shape that is cut at a center, and

wherein a first electrode and a second electrode are disposed on different areas of the at least one light emitting element based on a taper centerline of the at least one light emitting element.

12. The display transfer structure of claim 1 , wherein a planar shape of at least one light emitting element among the plurality of light emitting elements has a line asymmetric shape.

13. The display transfer structure of claim 1 , wherein the plurality of wells comprise a third well and a fourth well having different shapes,

wherein each of the plurality of light emitting elements comprise:

a third light emitting element disposed in the third well; and

a fourth light emitting element having a shape different from a shape of the third light emitting element and disposed in the fourth well.

14. A display transfer structure comprising:

a substrate comprising a plurality of wells; and

a plurality of light emitting elements disposed in the plurality of wells,

wherein the plurality of light emitting elements have a rotationally asymmetric planar shape,

wherein a first well and a second well among the plurality of wells that are adjacent to each other are included in a subpixel,

wherein the first well is oriented in a first direction and the second well is oriented in a second direction different from the first direction,

wherein one of the plurality of light emitting elements disposed in the first well is oriented in the first direction,

wherein the other one of the plurality of light emitting elements disposed in the second well is oriented in the second direction,

wherein the first well of the plurality of wells comprises a first area and a second area partially overlapping each other,

wherein a first light emitting element among the plurality of light emitting elements is disposed in the first area or the second area,

wherein the first area and the second area respectively have a planar shape corresponding to a planar shape of the first light emitting element,

wherein the first area and the second area are connected each other and a size and a shape of the first area is same as a shape and a size of the second area,

wherein the first well and the second well are disposed in an arc shape with respect to a predetermined central axis perpendicular to the substrate, and

wherein a first electrode pad and a second electrode pad of the substrate have an arc shape or ring shape with respect to the predetermined central axis.

15. A light emitting element transferring method comprising:

preparing a substrate comprising a plurality of wells; and

transferring a plurality of light emitting elements having a rotationally asymmetric planar shape to the plurality of wells,

wherein the plurality of wells respectively have a planar shape different from a shape of each of the plurality of light emitting elements,

wherein a first well of the plurality of wells comprises a first area and a second area partially overlapping each other,

wherein the transferring of the plurality of light emitting elements comprises inserting a first light emitting element among the plurality of light emitting elements into the first area in a first direction or into the second area in a second direction,

wherein the first area and the second area respectively have a planar shape corresponding to a planar shape of the first light emitting element,

wherein the first area and the second area are connected each other and a size and a shape of the first area is same as a shape and a size of the second area,

wherein the first well and a second well among the plurality of wells that are adjacent to each other are included in a subpixel,

wherein the first well and the second well are disposed in an arc shape with respect to a predetermined central axis perpendicular to the substrate, and

wherein a first electrode pad and a second electrode pad of the substrate have an arc shape or ring shape with respect to the predetermined central axis.

16. A display transfer structure comprising:

a substrate comprising a plurality of wells; and

a plurality of light emitting elements disposed in the plurality of wells,

wherein the plurality of light emitting elements have a rotationally asymmetric planar shape,

wherein at least two of the plurality of wells are disposed at different orientations from each other,

wherein a first well of the plurality of wells comprises a first area and a second area partially overlapping each other,

wherein a first light emitting element among the plurality of light emitting elements is disposed in the first area or the second area,

wherein the first area and the second area respectively have a planar shape corresponding to a planar shape of the first light emitting element,

wherein the first area and the second area are connected each other and a size and a shape of the first area is same as a shape and a size of the second area,

wherein the first well and a second well among the plurality of wells that are adjacent to each other are included in a subpixel,

wherein the first well and the second well are disposed in an arc shape with respect to a predetermined central axis perpendicular to the substrate, and

wherein a first electrode pad and a second electrode pad of the substrate have an arc shape or ring shape with respect to the predetermined central axis.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (136)