Display apparatus having display module and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11848313-B2
Application number	US-202017134837-A
Country	US
Kind code	B2
Filing date	Dec 28, 2020
Priority date	Dec 27, 2019
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

Provided is a display module including a substrate including a mounting surface, a side surface, and a chamfer portion formed between the mounting surface and the side surface, a plurality of inorganic light emitting diodes mounted on the mounting surface and each including a pair of electrodes electrically connected to the substrate, a black matrix arranged between the plurality of inorganic light emitting diodes, and a cover bonded to the mounting surface and configured to cover the mounting surface, wherein the pair of electrodes are oriented in a direction opposite to a direction in which the plurality of inorganic light emitting diodes emits light, and the cover is provided to extend outward of the side surface in an extension direction of the mounting surface.

First claim

What is claimed is:

1. A display module comprising:
a substrate comprising a mounting surface, a side surface, and a chamfer portion formed between the mounting surface and the side surface;
a plurality of inorganic light emitting diodes mounted on the mounting surface, the plurality of inorganic light emitting diodes comprising a plurality of pairs of electrodes electrically connected to the substrate, the plurality of pairs of electrodes disposed in a direction opposite to a direction in which the plurality of inorganic light emitting diodes emits light;
a black matrix arranged between the plurality of inorganic light emitting diodes; and
a cover bonded to the mounting surface and configured to cover the mounting surface, the cover provided to extend outward of the side surface in an extension direction of the mounting surface,
wherein the cover comprises:
a first region arranged outside of the mounting surface in the extension direction of the mounting surface, and
a second region arranged on the mounting surface.

2. The display module of claim 1 , wherein the cover comprises:
a first layer at an outermost side of the display module in a direction in which the mounting surface faces,
a second layer arranged behind the first layer, and
an adhesive layer arranged behind the second layer to bond the cover to the mounting surface.

3. The display module of claim 2 , wherein the first layer comprises at least one of an anti-glare layer or an anti-reflect layer.

4. The display module of claim 2 , wherein the second layer comprises a light transmission control layer configured to lower a light transmittance.

5. The display module of claim 2 , wherein the second layer comprises a circular polarization layer.

6. The display module of claim 2 , wherein the second layer is formed to be transparent, and wherein the adhesive layer comprises an opaque material to lower a light transmittance.

7. The display module of claim 1 , wherein an outermost end of the cover in the extension direction of the mounting surface comprises:
an inclined surface inclined with respect to the side surface, and
a length of a cross section of an upper side of the cover in a direction in which the mounting surface faces is larger than a length of a cross section of a lower side of the cover in the direction in which the mounting surface faces.

8. The display module of claim 7 , wherein the cover further comprises a light absorbing layer configured to cover the inclined surface of the outermost end of the cover in the extension direction of the mounting surface and comprising a light absorbing material.

9. The display module of claim 1 , wherein the side surfaces are provided to correspond to four edges of the mounting surface, and
wherein the cover is provided to extend outward of the four side surfaces corresponding to the four edges of the mounting surface in the extension direction of the mounting surface.

10. The display module of claim 1 , wherein each of the inorganic light emitting diodes is provided as a light emitting diode flip chip.

11. The display module of claim 1 , wherein each of the inorganic light emitting diodes comprises:
a light emitting surface formed in the direction in which the mounting surface faces and a bottom surface formed at a side opposite to the light emitting surface, and
the plurality of pairs of electrodes are arranged on the bottom surface.

12. A display apparatus comprising a display module array in which a plurality of display modules are arranged in a M×N matrix, wherein each of the plurality of display modules comprises:
a substrate comprising a mounting surface, a side surface, and a chamfer portion formed between the mounting surface and the side surface, the side surfaces are provided to correspond to four edges of the mounting surface;
a plurality of inorganic light emitting diodes mounted on the mounting surface, the plurality of inorganic light emitting diodes comprising a plurality of pairs of electrodes electrically connected to the substrate;
a black matrix arranged between the plurality of inorganic light emitting diodes; and
a cover bonded to the mounting surface and configured to cover the mounting surface,
wherein the plurality of pairs of electrodes are disposed in a direction opposite to a direction in which the plurality of inorganic light emitting diodes emits light, and
wherein the cover is provided to extend outward of the four side surfaces corresponding to the four edges of the mounting surface in an extension direction of the mounting surface such that at least a portion of the cover is arranged between a gap formed between the plurality of display modules.

13. The display apparatus of claim 12 , wherein the plurality of display modules comprise a first display module and a second display module arranged adjacent to the first display module, and
wherein a length of the gap in the extension direction of the mounting surface is provided to be larger than a length of a separation between a cover of the first display module and a cover of the second display module.

14. The display apparatus of claim 13 , wherein outermost ends of the covers of the first display module and the second display module in a direction in which the first display module and the second display module are adjacent to each other are formed as inclined surfaces inclined with respect to the side surfaces of the first and second display modules, and
wherein a separation distance in the extension direction of the mounting surface between an upper side of the cover of the first display module in a direction in which the mounting surface faces and an upper side of the cover of the second display module in the direction in which the mounting surface faces is shorter than a separation distance in the extension direction of the mounting surface between a lower side of the cover of the first display module in the direction in which the mounting surface faces and a lower side of the cover of the second display module in the direction in which the mounting surface faces.

15. The display apparatus of claim 14 , wherein the separation distance in the extension direction of the mounting surface between the lower side of the cover of the first display module in the direction in which the mounting surface faces and the lower side of the cover of the second display module in the direction in which the mounting surface faces is shorter than a distance of the gap between the first display module and the second display module in the extension direction of the mounting surface.

16. The display apparatus of claim 14 , wherein the inclined surfaces of the covers of the first and second display modules have an inclination angle smaller than an inclination angle of the chamfer portions of the first and second display modules.

17. The display apparatus of claim 12 , wherein the cover comprises:
a first layer arranged at an outermost side of the display module in a direction in which the mounting surface faces and comprising at least one of an anti-glare layer or an anti-reflect layer;
a second layer arranged behind the first layer; and
an adhesive layer arranged behind the second layer to bond the cover to the mounting surface.

18. The display module of claim 12 , wherein each of the inorganic light emitting diodes comprises a light emitting surface formed in the direction in which the mounting surface faces and a bottom surface formed at a side opposite to the light emitting surface, and
wherein the pair of electrodes are arranged on the bottom surface.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Shin Seonghwan
• Jung Sungsoo
• Oh Pilyong
• Lee Kwangjae
• Han Jeongin

Classifications

• H10W76/12

  characterised by their shape · CPC title

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H10H20/01

  Manufacture or treatment · CPC title

• H10H29/142 Primary

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title