Organic light emitting display panel and organic light emitting display device including the same

Patent metadata

Field	Value
Publication number	US-10326095-B2
Application number	US-201715825012-A
Country	US
Kind code	B2
Filing date	Nov 28, 2017
Priority date	Nov 30, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

An organic light emitting display panel includes a substrate, a driving transistor provided on the substrate, a first insulation layer covering the driving transistor, a second insulation layer covering the first insulation layer, a first electrode provided on the second insulation layer and connected to a first conductor part of the driving transistor, a second electrode provided on the second insulation layer and connected to a second conductor part of the driving transistor, a passivation layer covering the first electrode, the second electrode, and the second insulation layer, and an organic light emitting diode provided on the passivation layer, an anode configuring the organic light emitting diode is connected to the first conductor part, and the anode protrudes convexly from an upper surface of the passivation layer.

First claim

What is claimed is:

1. An organic light emitting display panel comprising:
a substrate;
a driving transistor disposed on the substrate;
a first insulation layer covering the driving transistor;
a second insulation layer covering the first insulation layer;
a first electrode disposed on the second insulation layer and connected to a first conductor part of the driving transistor;
a second electrode disposed on the second insulation layer and connected to a gate of the driving transistor;
a passivation layer covering the first electrode, the second electrode, and the second insulation layer; and
an organic light emitting diode disposed on the passivation layer; and
a protrusion disposed on the passivation layer and protruding from the upper surface of the passivation layer towards a direction of light emitted from the organic light emitting diode, and an anode disposed on the protrusion,
wherein the organic light emitting diode has the anode connected to the first conductor part and the anode protrudes from an upper surface of the passivation layer towards a direction of light emitted from the organic light emitting diode.

2. The organic light emitting display panel of claim 1 , further comprising a bank covering an outer portion of the anode and defining a plurality of pixels.

3. The organic light emitting display panel of claim 1 , wherein the protrusion is formed of an organic layer having black color.

4. The organic light emitting display panel of claim 1 , wherein the driving transistor is disposed under the anode.

5. The organic light emitting display panel of claim 1 , further comprising a first metal covered by the second insulation layer and covering the driving transistor.

6. The organic light emitting display panel of claim 1 , further comprising a second metal covered by the passivation layer and covering the driving transistor.

7. An organic light emitting display panel comprising:
a substrate;
a driving transistor disposed on the substrate;
a first insulation layer covering the driving transistor;
a second insulation layer covering the first insulation layer and a first metal;
a first electrode disposed on the second insulation layer and electrically connected to a first conductor part of the driving transistor;
a second electrode disposed on the second insulation layer and electrically connected to a gate of the driving transistor;
a passivation layer covering the first electrode, the second electrode, and the second insulation layer;
an organic light emitting diode disposed on the passivation layer; and
at least one of a first metal on the first insulation layer and a second metal on the second insulation layer, and the at least one of the first and second metals covering the driving transistor.

8. The organic light emitting display panel of claim 7 , further comprising a passivation layer on the second insulation layer.

9. The organic light emitting display panel of claim 8 , further comprising an anode disposed on the passivation layer.

10. The organic light emitting display panel of claim 9 , further comprising a bank covering an outer portion of the anode and defining a plurality of pixels.

11. The organic light emitting display panel of claim 7 , wherein the organic light emitting diode has an anode electrically connected to the first conductor part.

12. The organic light emitting display panel of claim 7 , wherein the driving transistor is disposed under the anode.

13. An organic light emitting display device comprising:
a substrate;
a driving transistor disposed on the substrate;
a first insulation layer covering the driving transistor;
a second insulation layer covering the first insulation layer;
a first electrode disposed on the second insulation layer and connected to a first conductor part of the driving transistor;
a second electrode disposed on the second insulation layer and connected to a gate of the driving transistor;
a passivation layer covering the first electrode, the second electrode, and the second insulation layer;
an organic light emitting diode disposed on the passivation layer;
a protrusion disposed on the passivation layer and protruding from the upper surface of the passivation layer towards a direction of light emitted from the organic light emitting diode, and the anode disposed on the protrusion,
a gate driver supplying a gate pulse to a plurality of gate lines disposed at the substrate;
a data driver supplying data voltages to a plurality of data lines disposed at the substrate; and
a controller controlling the gate driver and the data driver,
wherein the organic light emitting diode has an anode connected to the first conductor part and the anode protrudes from an upper surface of the passivation layer towards a direction of light emitted from the organic light emitting diode.

14. The organic light emitting display panel of claim 13 , further comprising a bank covering an outer portion of the anode and defining a plurality of pixels.

15. The organic light emitting display panel of claim 13 , wherein the protrusion is formed of an organic layer having black color.

16. The organic light emitting display panel of claim 13 , wherein the driving transistor is disposed under the anode.

17. An organic light emitting display device comprising:
a substrate;
a driving transistor disposed on the substrate;
a first insulation layer covering the driving transistor;
a second insulation layer covering the first insulation layer and a first metal;
a first electrode disposed on the second insulation layer and electrically connected to a first conductor part of the driving transistor;
a second electrode disposed on the second insulation layer and electrically connected to a gate of the driving transistor;
a passivation layer covering the first electrode, the second electrode, and the second insulation layer;
an organic light emitting diode disposed on the passivation layer;
at least one of the first metal on the first insulation layer and a second metal on the second insulation layer to cover the driving transistor;
a gate driver supplying a gate pulse to a plurality of gate lines included in the organic light emitting display panel;
a data driver supplying data voltages to a plurality of data lines included in the organic light emitting display panel; and
a controller controlling the gate driver and the data driver.

18. The organic light emitting display panel of claim 17 , further comprising a passivation layer on the second insulation layer.

19. The organic light emitting display panel of claim 18 , wherein the organic light emitting diode has an anode disposed on the passivation layer.

20. The organic light emitting display panel of claim 19 , wherein the driving transistor is disposed under the anode.

21. The organic light emitting display panel of claim 18 , wherein the anode is electrically connected to the first conductor part.

22. The organic light emitting display panel of claim 21 , further comprising a bank covering an outer portion of the anode and defining a plurality of pixels.

Assignees

• Lg Display Co Ltd

Inventors

• Kang Min-Gu
• Kim Daehwan

Classifications

• B32B2457/206

  Organic displays, e.g. OLED · CPC title

• H01L51/5237

  Electricity · mapped topic

• H01L51/5096 Primary

  Electricity · mapped topic

• H01L51/5296

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic