Display apparatus using semiconductor light-emitting device

Patent metadata

Field	Value
Publication number	US-12456713-B2
Application number	US-202017794395-A
Country	US
Kind code	B2
Filing date	Feb 12, 2020
Priority date	Jan 22, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

The present invention relates to a display apparatus, specifically to a display apparatus using semiconductor light-emitting elements of a few micrometers to tens of micrometers in size. The present invention provides a display apparatus comprising: a base part; a partition part having a plurality of grooves; a plurality of semiconductor light-emitting elements arranged on the base part and mounted in the plurality of grooves; first and second wiring electrodes arranged on one side and the other side of each of the semiconductor light-emitting elements, respectively; an assembly electrode arranged on the base part and arranged on the one side of each of the semiconductor light-emitting elements; and a dielectric layer arranged on the base part and arranged between the assembly electrode and the first wiring electrode, wherein each of the plurality of grooves includes at least one recess portion formed in the horizontal direction with respect to the base part.

First claim

What is claimed is:

1. A display device comprising:
a base;
partition walls defining a plurality of grooves;
a plurality of semiconductor light emitting devices disposed on the base part and seated in the plurality of grooves;
wherein for each of the plurality of grooves, the display device comprises:
first and second wiring electrodes respectively disposed at opposite ends of each of the semiconductor light emitting devices;
an assembly electrode disposed on the base along a first direction adjacent to the semiconductor light emitting devices;
a dielectric layer disposed on the base and disposed between the assembly electrode and the corresponding first wiring electrode; and
at least one recess portion formed in the groove, wherein the at least one recess portion comprises a first recess portion and a second recess portion extended from both sides of each of the plurality of grooves along a second direction perpendicular to the first direction,
wherein a diameter of each of the plurality of grooves is greater than that of each of the plurality of semiconductor light emitting devices, and a width of each of the first recess portion and the second recess portion is less than the diameter of the plurality of semiconductor light emitting devices.

2. The display device according to claim 1 , wherein the assembly electrode comprises first and second assembly electrodes disposed opposite each other with respect to the semiconductor light emitting devices, and
wherein each of the first recess portion and the second recess portion is configured to overlap each of the first and second assembly electrodes.

3. The display device according to claim 1 , wherein the first wiring electrode is disposed between the first and second assembly electrodes.

4. The display device according to claim 3 , wherein a portion of a bottom surface of the groove does not overlap the first wiring electrode and the first and second assembly electrodes.

5. The display device according to claim 1 , wherein a width of the at least one recess portion is smaller than a maximum width of the semiconductor light emitting device.

6. A display device comprising:
a base;
partition walls defining a plurality of grooves;
a plurality of semiconductor light emitting devices disposed on the base part and seated in the plurality of grooves;
wherein for each of the plurality of grooves, the display device comprises:
first and second wiring electrodes respectively disposed at opposite ends of each of the semiconductor light emitting devices;
first and second assembly electrodes disposed on the base along a first direction and disposed opposite each other with respect to the semiconductor light emitting devices; and
a dielectric layer disposed on the base and disposed between the first and second assembly electrodes and the corresponding first wiring electrode; and
at least one recess portion formed in the groove, and
wherein the at least one recess portion is formed to overlap each of the first and second assembly electrodes,
wherein the at least one recess portion comprises a first recess portion and a second recess portion extended from both sides of each of the plurality of grooves along a second direction perpendicular to the first direction,
wherein a diameter of each of the plurality of grooves is greater than that of each of the plurality of semiconductor light emitting devices, and a width of each of the first recess portion and the second recess portion is less than the diameter of the plurality of semiconductor light emitting devices.

7. The display device according to claim 6 , wherein the first wiring electrode is disposed between the first and second assembly electrodes.

8. The display device according to claim 7 , wherein a portion of a bottom surface of the groove does not overlap the first wiring electrode and the first and second assembly electrodes.

9. The display device according to claim 1 , wherein each of the at least one recess portion is spaced apart each other along the first direction.

10. The display device according to claim 6 , wherein each of the at least one recess portion is spaced apart each other along the first direction.

Assignees

• Lg Electronics Inc

Inventors

• Kim Soohyun
• Park Sungyun
• Chung Indo
• Kwon Jeonghyo

Classifications

• H10W72/0198

  batch processes · CPC title

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/018

  Bonding of wafers · CPC title

• H10H20/857

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title

• H10H20/8506

  Containers · CPC title