Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-10170525-B2
Application number	US-201615349179-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	Nov 11, 2015
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

An organic light emitting display device includes a substrate, a gate insulation layer, a planarization layer, a boundary pattern, and a sub-pixel structure. The substrate includes a sub-pixel region and a transparent region. The gate insulation layer is disposed on the substrate. The planarization layer is disposed in the sub-pixel region on the gate insulation layer, and exposes the transparent region. The boundary pattern covers a boundary of the sub-pixel region and the transparent region. The sub-pixel structure is disposed on the planarization layer.

First claim

What is claimed is:

1. An organic light emitting display (OLED) device, comprising:
a substrate including a sub-pixel region and a transparent region;
a gate insulation layer on the substrate;
a planarization layer in the sub-pixel region on the gate insulation layer, the planarization layer exposing-the transparent region;
a boundary pattern which covers a boundary of the sub-pixel region and the transparent region, the boundary pattern including:
a first boundary extension extending in a direction from the boundary of the sub-pixel region and the transparent region into the sub-pixel region, the first boundary extension extending onto the sidewall of the planarization layer, and
a second boundary extension extending in a direction from the boundary of the sub-pixel region and the transparent region into the transparent region, the second boundary extension extending onto an upper surface of the gate insulation layer that is located in transparent region on the substrate;

a pixel defining layer on the planarization layer, the pixel defining layer exposing the transparent region and exposing at least a portion of an upper surface of the boundary pattern in the transparent region; and
a sub-pixel structure on the planarization layer.

2. The OLED device of claim 1 , wherein the first boundary extension and the second boundary extension are integrally formed, and the boundary pattern covers a portion where the sidewall of the planarization layer, a lower surface of the planarization layer, and an upper surface of the gate insulation layer are simultaneously contacted.

3. The OLED device of claim 2 , wherein the sub-pixel structure includes:
a lower electrode on the planarization layer;
a light emitting layer on the lower electrode; and
an upper electrode on the light emitting layer,
wherein the upper electrode and the boundary pattern are simultaneously formed using the same materials.

4. The OLED device of claim 1 , further comprising an insulating interlayer disposed between a gate electrode and the planarization layer.

5. The OLED device of claim 4 , wherein the first boundary extension and the second boundary extension are integrally formed, and the boundary pattern covers a portion where the sidewall of the insulating interlayer and an upper surface of the gate insulation layer are simultaneously contacted.

6. The OLED device of claim 5 , wherein the sub-pixel structure includes:
a lower electrode on the planarization layer;
a light emitting layer on the lower electrode; and
an upper electrode on the light emitting layer,
wherein the upper electrode and the boundary pattern are simultaneously formed using the same materials.

7. An organic light emitting display (OLED) device, comprising:
a substrate including a sub-pixel region and a transparent region;
a gate insulation layer on the substrate;
a planarization layer in the sub-pixel region on the gate insulation layer, the planarization layer exposing the transparent region;
an insulating interlayer disposed between a gate electrode and the planarization layer;
a boundary pattern which covers a boundary of the sub-pixel region and the transparent region, the boundary pattern including:
a first boundary portion covered by the insulating interlayer, and
a second boundary extension extending from the boundary of the sub-pixel region and the transparent region onto an upper surface of the gate insulation layer that is located in transparent region on the substrate;

a pixel defining layer on the planarization layer, the pixel defining layer exposing the transparent region and exposing at least a portion of an upper surface of the boundary pattern in the transparent region; and
a sub-pixel structure on the planarization layer.

8. The OLED device of claim 7 , wherein the gate electrode of a transistor in the sub-pixel region and the boundary pattern are simultaneously formed using the same materials.

9. The OLED device of claim 1 , wherein the boundary pattern has a hinge shape.

10. The OLED device of claim 1 , wherein the sub-pixel structure includes:
a lower electrode on the planarization layer;
a light emitting layer on the lower electrode; and
an upper electrode on the light emitting layer,
wherein the upper electrode is disposed in the sub-pixel region, and exposes the gate insulation layer that is located in the transparent region on the substrate.

11. The OLED device of claim 10 , wherein the lower electrode includes:
a first transparent electrode film having a first thickness on the planarization layer;
a reflective electrode film having a second thickness on the first transparent electrode film, the second thickness being greater than the first thickness; and
a second transparent electrode film having a third thickness on the reflection electrode film, the third thickness being less than the first thickness.

12. The OLED device of claim 11 , further comprising:
a protection pattern having the third thickness on the second transparent electrode film, the protection pattern covering the lower electrode.

13. The OLED device of claim 12 , wherein the boundary pattern and the protection pattern are simultaneously formed using the same materials.

14. The OLED device of claim 1 , further comprising:
a semiconductor element in the sub-pixel region on the substrate,
wherein the semiconductor element includes:
an active layer on the substrate;
a gate electrode on the gate insulation layer covering the active layer; and
source and drain electrodes on the gate electrode.

15. The OLED device of claim 14 , further comprising:
an insulating interlayer interposed between the gate insulation layer and the planarization layer, the insulating interlayer covering the gate insulation layer in the sub-pixel region on the substrate, the insulating interlayer exposing the gate insulation layer that is located in the transparent region on the substrate.

16. The OLED device of claim 15 , wherein the boundary pattern and the gate electrode are located at the same level.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Chang-Ho
• Kim Dae-Woo
• Lee Jin-A
• Hur Myung-Koo

Classifications

• H01L27/3248

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic

• H01L27/3262

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic