Organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-10236333-B2
Application number	US-201715672292-A
Country	US
Kind code	B2
Filing date	Aug 8, 2017
Priority date	Aug 30, 2016
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

An organic light-emitting display device having reduced color dispersion effects includes a substrate, a first conductive line disposed on the substrate, a second conductive line disposed on the same layer as the first conductive line and insulated from the first conductive line and a pixel electrode disposed on the first and second conductive lines and overlapping the first and second conductive lines. A distance between the first conductive line and the second conductive line is about 0 to 10 μm.

First claim

What is claimed is:

1. An organic light-emitting display device comprising:
a substrate;
a first conductive line disposed on the substrate;
a second conductive line disposed on the same layer as the first conductive line and insulated from the first conductive line; and
a pixel electrode disposed on the first and second conductive lines overlapping the first and second conductive lines,
wherein:
a distance between the first conductive line and the second conductive line is about 0 to 10 μm; and
a difference between a minimum distance from an upper surface of the substrate to a lower surface of the pixel electrode and a maximum distance from the upper surface of the substrate to the lower surface of the pixel electrode is about 70 nm or less.

2. The display device of claim 1 , further comprising:
an insulating layer which is disposed between the first and second conductive lines and the substrate; and
a overcoat layer which is disposed between the first and second conductive lines and the pixel electrode and has a first thickness and a second thickness,
wherein the first thickness of the overcoat layer is defined as a minimum distance from an upper surface of the insulating layer to an upper surface of the overcoat layer, and the second thickness of the overcoat layer is defined as a maximum distance from the upper surface of the insulating layer to the upper surface of the overcoat layer, wherein a difference between the first thickness and the second thickness is about 70 nm or less.

3. The display device of claim 2 , wherein the first thickness of the overcoat layer is about 1.5 to 2.0 μm.

4. The display device of claim 1 , further comprising:
a first switching device which has a first electrode connected to the first conductive line;
a second switching device which has a control electrode connected to a second electrode of the first switching device, a first electrode connected to the second conductive line, and a second electrode connected to the pixel electrode; and
an organic emitting layer disposed on and overlapping the pixel electrode,
wherein the pixel electrode and organic emitting layer are component parts of an organic light emitting diode.

5. The display device of claim 4 , wherein the first conductive line is a data line which provides a data signal to the first electrode of the first switching device, and the second conductive line is a driving voltage line which provides a driving voltage to the first electrode of the second switching device.

6. The display device of claim 5 , wherein the distance between the first conductive line and the second conductive line is about 5 to 10 μm.

7. The display device of claim 1 , wherein a distance from a side of the pixel electrode to a side of the first conductive line is equal to a distance from the other side of the first conductive line to a side of the second conductive line and also equal to a distance from the other side of the second conductive line to the other side of the pixel electrode.

8. The display device of claim 1 , further comprising:
a black matrix which comprises an opening region overlapping the pixel electrode; and
a photosensitive member which overlaps the opening region.

9. The display device of claim 8 , wherein the black matrix is disposed on the pixel electrode, and the photosensitive member is disposed on the black matrix to overlap the pixel electrode.

10. An organic light-emitting display device comprising:
a substrate;
a first conductive line disposed on the substrate and extending in a first direction;
a second conductive line extending in the first direction; and
a pixel electrode disposed on the first and second conductive lines overlapping the first and second conductive lines,
wherein:
a distance between the first conductive line and the second conductive line is about 0 to 10 μm in a plan view; and
a difference between a minimum distance from an upper surface of the substrate to a lower surface of the pixel electrode and a maximum distance from the upper surface of the substrate to the lower surface of the pixel electrode is about 70 nm or less.

11. The display device of claim 10 , further comprising a connecting electrode disposed on a different layer from the second conductive line.

12. The display device of claim 10 , wherein the pixel further comprises:
a driving transistor which has a source electrode connected to a driving voltage terminal and a drain electrode connected to the pixel electrode; and
a switching transistor which has a drain electrode connected to a gate electrode of the driving transistor.

13. The display device of claim 12 , wherein one of the first and second conductive lines comprises a data line which provides a data signal to a source electrode of the switching transistor.

14. The display device of claim 12 , further comprising an initialization line configured to provide an initialization signal to the gate electrode of the driving transistor.

15. The display device of claim 12 , wherein one of the first and second conductive lines comprises a driving voltage line which is connected to the source electrode of the driving transistor and the driving voltage terminal.

16. The display device of claim 12 , wherein the first and second conductive lines are not electrically connected to the driving transistor and the switching transistor.

17. The display device of claim 10 , further comprising an insulating layer disposed between the first conductive line and the second conductive line.

18. The display device of claim 17 , further comprising an overcoat layer which is disposed between the second conductive line and the pixel electrode and has a first thickness and a second thickness, wherein the first thickness of the overcoat layer is defined as a minimum distance from an upper surface of the insulating layer to an upper surface of the overcoat layer, and the second thickness of the overcoat layer is defined as a maximum distance from the upper surface of the insulating layer to the upper surface of the overcoat layer, wherein a difference between the first thickness and the second thickness is about 70 nm or less.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hyoeng Ki

Classifications

• H01L27/3258

  Electricity · mapped topic

• G02B5/30

  Polarising elements (light-modulating devices with active elements G02F1/00) · CPC title

• H01L27/322

  Electricity · mapped topic

• H01L27/3276 Primary

  Electricity · mapped topic

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title