Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-9947734-B2
Application number	US-201615379202-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 29, 2015
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A display device may include a substrate, a first light emitting structure, a second light emitting structure, and a support structure. The first light emitting structure may include an electrode and a light emitting layer. A face of the electrode may directly contact the light emitting layer and may overlap the substrate. The support structure may be positioned between the first light emitting structure and the second light emitting structure, may be spaced from each of the first light emitting structure and the second light emitting structure, may overlap a transparent portion of the substrate, and may not include or directly contact any light emitting layer. A height of the support structure relative to the substrate may be greater than at least one of a height of the face of the electrode relative to the substrate and a height of the light emitting layer relative to the substrate.

First claim

What is claimed is:

1. A display device comprising:
a substrate;
a first light emitting structure, which comprises a first electrode and a first light emitting layer, wherein a first face of the first electrode directly contacts the first light emitting layer and overlaps the substrate;
a second light emitting structure, which comprises a second electrode and a second light emitting layer, wherein a face of the second electrode directly contacts the second light emitting layer and overlaps the substrate; and
a support structure, which is positioned between the first light emitting structure and the second light emitting structure, is spaced from each of the first light emitting structure and the second light emitting structure, overlaps a transparent portion of the substrate, and does not include or directly contact any light emitting layer, wherein a maximum height of the support structure relative to the substrate is greater than at least one of a maximum height of the first face of the first electrode relative to the substrate and a maximum height of the first light emitting layer relative to the substrate.

2. The display device of claim 1 , wherein a maximum width of the support structure in a direction parallel to the first face of the first electrode is less than a maximum width of the first face of the first electrode.

3. The display device of claim 1 comprising: a planarization layer, which is spaced from the support structure, is positioned between the substrate and the first light emitting structure, and directly contacts a second face of the first electrode, wherein the second face of the first electrode is opposite the first face of the first electrode, and wherein a material of the planarization layer is identical to a material of the support structure.

4. The display device of claim 3 , wherein the support structure comprises a first support member and a second support member, wherein the first support member is positioned between the substrate and the second support member, wherein a maximum width of the first support member in a direction parallel to the first face of the first electrode is greater than a maximum width of the second support member in the direction parallel to the first face of the first electrode, and wherein a maximum height of the first support member relative to the substrate is equal to a maximum height of the planarization layer relative to the substrate.

5. The display device of claim 3 , wherein the support structure and the planarization layer both directly contact the substrate or both directly contact a material layer that is positioned between the substrate and the support structure.

6. The display device of claim 3 comprising:
a switching element, which is electrically connected to the first light emitting structure; and
an intermediary layer, which is positioned between the substrate and the first light emitting structure, directly contacts at least one of the substrate and the switching element, and directly contacts both the support structure and the planarization layer.

7. The display device of claim 6 , wherein the switching element comprises an active layer, wherein the intermediary layer directly contacts all of the active layer, the support structure, and the planarization layer.

8. The display device of claim 6 , wherein the switching element comprises a drain electrode, wherein the drain electrode is directly connected to the first electrode, and wherein the intermediary layer directly contacts all of the drain electrode, the support structure, and the planarization layer.

9. The display device of claim 6 , wherein the planarization layer directly contacts more faces of the intermediary layer than the support structure.

10. The display device of claim 1 comprising: a spacer, which is positioned between the first light emitting structure and the support structure, is spaced from each of the first light emitting structure and the support structure, is positioned closer to the first light emitting structure than to the support structure, and is shorter than the support structure in a direction perpendicular to the first face of the first electrode, wherein a maximum height of the spacer relative to the substrate is greater than at least one of the maximum height of the first face of the first electrode relative to the substrate and the maximum height of the first light emitting layer relative to the substrate.

11. The display device of claim 10 , wherein the maximum height of the spacer relative to the substrate is equal to the maximum height of the support structure relative to the substrate.

12. The display device of claim 1 comprising: a pixel defining layer, which is spaced from the support structure, wherein a portion of the first light emitting layer is positioned between two portions of the pixel defining layer and directly contacts each of the two portions of the pixel defining layer, and wherein a maximum height of the pixel defining layer relative to the substrate is equal to the maximum height of the support structure relative to the substrate.

13. The display device of claim 1 comprising: a pixel defining layer, which is spaced from the support structure, wherein a portion of the first light emitting layer is positioned between two portions of the pixel defining layer and directly contacts each of the two portions of the pixel defining layer, wherein the support structure comprises a first support member and a second support member, wherein the first support member is positioned between the substrate and the second support member and is wider than the second support member in a direction parallel to the first face of the first electrode, wherein a material of the second support member is identical to a material of the pixel defining layer.

14. The display device of claim 1 comprising:
a pixel defining layer, which is spaced from the support structure, wherein a portion of the first light emitting layer is positioned between two portions of the pixel defining layer and directly contacts each of the two portions of the pixel defining layer;
a spacer, which protrudes from one of the two portions of the pixel defining layer and is narrower than each of the two portions of the pixel defining layer in a direction parallel to the first face of the first electrode, and wherein a maximum height of the spacer relative to the substrate is greater than at least one of the maximum height of the first face of the first electrode relative to the substrate and the maximum height of the first light emitting layer relative to the substrate.

15. The display device of claim 14 , wherein the support structure comprises a first support member and a second support member, wherein the first support member is positioned between the substrate and the second support member and is wider than the second support member in the direction parallel to the first face of the first electrode, and wherein a maximum dimension of a combination of the spacer and the pixel defining layer in a direction perpendicular to the first face of the first electrode is equal to a maximum dimension of the second support member in the direction perpendicular to the first face of the first electrode.

16. The display device of claim 15 , wherein a material of the second support member is identical to a material of the spacer.

17. The display device of claim 14 , wherein the spacer and the light emitting layer directly contact a same face of the pixel defining layer.

18. The display device of claim 1 , wherein the support structure includes siloxane-bas

Assignees

• Samsung Display Co Ltd

Inventors

• You Chun-Gi
• Lee Gwang-Geun

Classifications

• H01L27/3258 Primary

  Electricity · mapped topic

• H01L51/525

  Electricity · mapped topic

• H01L27/1248

  Electricity · mapped topic

• H01L27/326

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic