Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-9660010-B2
Application number	US-201514728647-A
Country	US
Kind code	B2
Filing date	Jun 2, 2015
Priority date	Jul 30, 2014
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

An organic light emitting display device includes a substrate, a first insulating layer, a extension of a drain electrode, a second insulating layer, a first electrode, an emission layer, and a second electrode. The substrate has a display region and a transparent region. The first insulating layer is disposed on the substrate. The extension of drain electrode is disposed on the first insulating layer. The second insulating layer is disposed on the extension of a drain electrode such that an edge portion of the extension of a drain electrode is free from overlap with the second insulating layer. The first electrode is disposed on the second insulating layer and in contact with the edge portion of the extension of a drain electrode. The emission layer is disposed on the first electrode. The second electrode is disposed on the emission layer.

First claim

What is claimed is:

1. An organic light emitting display device comprising:
a substrate having a display region and a transparent region;
a first insulating layer disposed on the substrate;
an extension of a drain electrode disposed on the first insulating layer, the extension of the drain electrode constituting a semiconductor element in conjunction with an active pattern, a gate electrode, and a source electrode;
a second insulating layer disposed on the extension of the drain electrode such that an edge portion of the extension of the drain electrode is free from overlap with the second insulating layer, the side edge portion of the extension of the drain electrode extending in a direction from the display region into the transparent region;
a first electrode disposed on the second insulating layer and in contact with the edge portion of the extension of the drain electrode;
an emission layer disposed on the first electrode; and
a second electrode disposed on the emission layer,
wherein at least a portion of the first electrode is in direct contact with the first insulating layer, and
wherein the first electrode covers the side edge portion of the extension of the drain electrode such that the side edge portion of the extension of the drain electrode is not exposed in a cross-sectional view of the organic light emitting display device.

2. The organic light emitting display device of claim 1 , wherein the first electrode covers the edge portion of the extension of the drain electrode and is positioned adjacent to a boundary of the display region and the transparent region.

3. The organic light emitting display device of claim 1 , wherein the extension of the drain electrode is electrically connected to the first electrode and surrounded by the first electrode and the second insulating layer.

4. The organic light emitting display device of claim 1 , further comprising:
a pixel defining layer disposed on the first insulating layer and covering the first electrode positioned on the extension of the drain electrode.

5. The organic light emitting display device of claim 4 , wherein the pixel defining layer includes a transparent material.

6. The organic light emitting display device of claim 4 , wherein the pixel defining layer includes:
a first opening positioned in the display region and in which the emission layer is disposed; and
a second opening positioned in the transparent region.

7. The organic light emitting display device of claim 6 , wherein the second opening is formed by removing the pixel defining layer.

8. The organic light emitting display device of claim 7 , wherein the second electrode extends into the second opening.

9. The organic light emitting display device of claim 6 , wherein the second opening is formed by removing the pixel defining layer and the first insulating layer.

10. The organic light emitting display device of claim 1 , wherein the extension of the drain electrode and the first electrode are disposed in the display region.

11. The organic light emitting display device of claim 1 , further comprising:
at least one semiconductor device disposed between the substrate and the second insulating layer;
an insulating interlayer disposed on the substrate; and
a capacitor disposed between the insulating interlayer and the extension of the drain electrode.

12. The organic light emitting display device of claim 11 , wherein:
the at least one semiconductor device includes a first semiconductor that includes a first active pattern disposed on the substrate,
the insulating interlayer is disposed on the first active pattern, a first gate electrode is disposed on the insulating interlayer,
the extension of the drain electrode contacts a first portion of the first active pattern and extends adjacent to a boundary of the display region and the transparent region, and a first drain electrode contacts a second portion of the first active pattern.

13. The organic light emitting display device of claim 12 , wherein the capacitor includes:
a lower electrode disposed on the insulating interlayer,
an upper electrode contacting an extended portion of the extension of the drain electrode and disposed on the lower electrode, and
a gate insulating layer disposed between the lower electrode and the upper electrode.

14. The organic light emitting display device of claim 13 , wherein the lower electrode and the first gate electrode are positioned at a same level on the insulating interlayer.

15. The organic light emitting display device of claim 13 , wherein a power supply voltage is applied to the first electrode, the first portion of the first active pattern, and the upper electrode via the extension of the drain electrode.

16. The organic light emitting display device of claim 13 , wherein the gate insulating layer includes materials that are substantially the same as materials of the first insulating layer.

17. The organic light emitting display device of claim 11 , wherein:
the at least one semiconductor device includes a second semiconductor that includes a second active pattern disposed on the substrate,
the insulating interlayer is disposed on the second active pattern,
a second gate electrode is disposed on the insulating interlayer,
a second source electrode contacts a first portion of the second active pattern, and
a second drain electrode contacts a second portion of the second active pattern.

18. The organic light emitting display device of claim 1 , further comprising a driving transistor that extends through the first insulating layer to connect to the extension of the drain electrode.

19. An organic light emitting display device comprising:
a substrate having a display region and a transparent region;
a first insulating layer disposed on the substrate;
an extension of a drain electrode disposed on the first insulating layer;
a second insulating layer disposed on the extension of the drain electrode such that an edge portion of the extension of the drain electrode is free from overlap with the second insulating layer;
a first electrode disposed on the second insulating layer and in contact with the edge portion of the extension of the drain electrode;
an emission layer disposed on the first electrode and not disposed in the transparent region;
a pixel defining layer disposed on the first insulating layer and covering the first electrode positioned on the extension of the drain electrode, the pixel defining layer including:
a first opening positioned in the display region and in which the emission layer is disposed; and
a second opening positioned in the transparent region; and

a second electrode disposed on the emission layer,
wherein the first electrode and the emission layer are overlapped in a plan view, and wherein the second electrode extends into the second opening.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Sang-Ho
• Park Joung-Keun
• Ahn Ki-Wan
• Yoon Joo-Sun
• Lee Seung-Min
• Jang Yong-Jae

Classifications

• H10K59/8051

  Anodes · CPC title

• H10K59/1216

  the pixel elements being capacitors · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H01L27/3258

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic