Anodic oxide film for electric contact, optoelectronic display, and method of manufacturing optoelectronic display

1. An anodic oxide film for electric contact, the anodic oxide film being provided between an optical element and a substrate to electrically connect a terminal of the optical element and an electrode of the substrate, the anodic oxide film comprising:

a plurality of vertical conductive parts penetrating the anodic oxide film;

a horizontal conductive part formed on a surface of the anodic oxide film and connected to a first plurality of vertical conductive parts among the plurality of vertical conductive parts; and

an insulating part formed on the surface of the anodic oxide film,

wherein the terminal of the optical element and the electrode of the substrate are electrically connected to each other by the first plurality of vertical conductive parts and the horizontal conductive part,

wherein the anodic oxide film comprises a pore formed when anodizing a metal base material, and

each of the plurality of vertical conductive parts is formed inside the pore, and

wherein each of the plurality of vertical conductive parts comprises a protruding portion protruding from the surface of the anodic oxide film.

2. The anodic oxide film of claim 1 , wherein the anodic oxide film is provided as a plurality of layers.

3. The anodic oxide film of claim 1 , wherein each of the plurality of vertical conductive parts comprises at least one of:

a first metal part including at least one of Au, Ag, Cu, and Ni; and

a second metal part made of a metal that melts at a temperature lower than a melting temperature of the first metal part.

4. The anodic oxide film of claim 3 , wherein the second metal part comprises an Sn-based solder.

5. The anodic oxide film of claim 3 , wherein the second metal part is formed on the first metal part, and

the second metal part protrudes from the surface of the anodic oxide film.

6. An anodic oxide film for electric contact, the anodic oxide film being provided between an optical element and a substrate to electrically connect a terminal of the optical element and an electrode of the substrate, the anodic oxide film comprising:

a plurality of vertical conductive parts penetrating the anodic oxide film;

a horizontal conductive part formed on a surface of the anodic oxide film and connected to a first plurality of vertical conductive parts among the plurality of vertical conductive parts; and

an insulating part formed on the surface of the anodic oxide film,

wherein the terminal of the optical element and the electrode of the substrate are electrically connected to each other by the first plurality of vertical conductive parts and the horizontal conductive part,

wherein the anodic oxide film comprises a pore formed when anodizing a metal base material and a through-hole formed to have a larger diameter than the pore, and

each of the plurality of vertical conductive parts is formed inside the through-hole, and

wherein each of the plurality of vertical conductive parts comprises a protruding portion protruding from the surface of the anodic oxide film.

7. An optoelectronic display, comprising:

an optical element;

a substrate; and

an anodic oxide film for electric contact provided between the optical element and the substrate,

wherein the anodic oxide film for electric contact comprises:

a plurality of vertical conductive parts penetrating the anodic oxide film;

a horizontal conductive part formed on a surface of the anodic oxide film and connected to a first plurality of vertical conductive parts among the plurality of vertical conductive parts; and

an insulating part formed on the surface of the anodic oxide film,

wherein the anodic oxide film for electric contact is configured to electrically connect a terminal of the optical element to an electrode of the substrate through the first plurality of vertical conductive parts and the horizontal conductive part,

wherein the anodic oxide film comprises a pore formed when anodizing a metal base material, and

each of the plurality of vertical conductive parts is formed inside the pore, and

wherein each of the plurality of vertical conductive parts comprises a protruding portion protruding from the surface of the anodic oxide film.

8. The optoelectronic display of claim 7 , wherein the anodic oxide film for electric contact is provided as a plurality of anodic oxide films, and

the horizontal conductive part is provided between anodic oxide films adjacent to each other from top to bottom.

9. The optoelectronic display of claim 7 , wherein each of the plurality of vertical conductive parts comprises an Sn-based solder.

10. The optoelectronic display of claim 7 , wherein the optical element is a micro LED.

11. An anodic oxide film for electric contact, the anodic oxide film being provided between an optical element and a substrate to electrically connect first and second terminals formed on a bottom surface of the optical element and first and second electrodes of the substrate, wherein the first and second electrodes of the substrate have a longer separation distance than the first and second terminals of the optical element, the anodic oxide film comprising:

a plurality of vertical conductive parts penetrating the anodic oxide film; and

a horizontal conductive part formed on a surface of the anodic oxide film, wherein the horizontal conductive part includes a first horizontal conductive part connected to a first plurality of vertical conductive parts among the plurality of vertical conductive parts and a second horizontal conductive part connected to a second plurality of vertical conductive parts among the plurality of vertical conductive parts, and the second horizontal conductive part is spaced from the first horizontal conductive part; and

an insulating part formed on the surface of the anodic oxide film,

wherein the first terminal of the optical element and the first electrode of the substrate are electrically connected to each other by the first plurality of vertical conductive parts and the first horizontal conductive part,

wherein the second terminal of the optical element and the second electrode of the substrate are electrically connected to each other by the second plurality of vertical conductive parts and the second horizontal conductive part, and

wherein the anodic oxide film comprises a pore formed when anodizing a metal base material, and

each of the plurality of vertical conductive parts is formed inside the pore.

12. An anodic oxide film for electric contact, the anodic oxide film being provided between an optical element and a substrate to electrically connect first and second terminals formed on a bottom surface of the optical element and first and second electrodes of the substrate, wherein the first and second electrodes of the substrate have a longer separation distance than the first and second terminals of the optical element, the anodic oxide film comprising:

a plurality of vertical conductive parts penetrating the anodic oxide film; and

a horizontal conductive part formed on a surface of the anodic oxide film, wherein the horizontal conductive part includes a first horizontal conductive part connected to a first plurality of vertical conductive parts among the plurality of vertical conductive parts and a second horizontal conductive part connected to a second plurality of vertical conductive parts among the plurality of vertical conductive parts, and the second horizontal conductive part is spaced from the first horizontal conductive part; and

an insulating part formed on the surface of the anodic oxide film,

wherein the first terminal of the optical element and the first electrode of the substrate are electrically connected to each other by the first plurality of vertical conductive parts and the first horizontal conductive part,

wherein the second terminal of the optical element and the second electrode of the substrate are electrically connected to each other by the second plurality of vertical conductive parts and the second horizontal conductive part, and

wherein the anodic oxide film comprises a pore formed when anodizing a metal base material and a through-hole formed to have a larger diameter than the pore, and

each of the plurality of vertical conductive parts is formed inside the through-hole.