Organic light-emitting display panel and organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-10516015-B2
Application number	US-201816147582-A
Country	US
Kind code	B2
Filing date	Sep 29, 2018
Priority date	May 22, 2018
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

An organic light-emitting display panel is provided. The display panel includes a first driving voltage line arranged on an interlayer insulation layer and electrically connected with a source electrode or drain electrode of a driving transistor, a first reference voltage line arranged on a substrate and configured to extend in a first direction; a second reference voltage line arranged on the substrate and configured to extend in a second direction perpendicular to the first direction. A first electrode of the first switch transistor is electrically connected with the first reference voltage line, and a second electrode of the first switch transistor is electrically connected with a first electrode plate of a capacitor. A first electrode of the second switch transistor is electrically connected with the second reference voltage line, and a second electrode of the second switch transistor is electrically connected with a gate electrode of the driving transistor.

First claim

What is claimed is:

1. An organic light-emitting display panel, comprising:
a substrate;
a semiconductor of a first switch transistor arranged on the substrate;
a semiconductor of a second switch transistor arranged on the substrate;
a semiconductor of a driving transistor arranged on the substrate and having one or more bending portions;
a gate insulation layer covering the semiconductor of the first switch transistor, the semiconductor of the second switch transistor, and the semiconductor of the driving transistor;
a gate electrode of the first switch transistor located on the gate insulation layer and overlapping the semiconductor of the first switch transistor;
a gate electrode of the second switch transistor located on the gate insulation layer and overlapping the semiconductor of the second switch transistor;
a gate electrode of the driving transistor located on the gate insulation layer and overlapping the semiconductor of the driving transistor;
an interlayer insulation layer covering the gate electrode of the first switch transistor, the gate electrode of the second switch transistor, and the gate electrode of the driving transistor;
a first driving voltage line arranged on the interlayer insulation layer and electrically connected to a source electrode or a drain electrode of the driving transistor;
a first electrode plate of a capacitor arranged on the substrate and overlapping the gate electrode of the driving transistor;
a first reference voltage line arranged on the substrate and extending in a first direction;
a second reference voltage line arranged on the substrate and extending in a second direction perpendicular to the first direction,
a first electrode of the first switch transistor electrically connected to the first reference voltage line,
a second electrode of the first switch transistor electrically connected to the first electrode plate of the capacitor;
a first electrode of the second switch transistor electrically connected to the second reference voltage line; and
a second electrode of the second switch transistor electrically connected to the gate electrode of the driving transistor.

2. The organic light-emitting display panel according to claim 1 , wherein the first reference voltage line is located in a first metal layer.

3. The organic light-emitting display panel according to claim 2 , wherein the first metal layer further comprises a data line extending in the first direction.

4. The organic light-emitting display panel according to claim 3 , wherein the organic light-emitting display panel further comprises a third switch transistor, the third switch transistor having a first electrode electrically connected to the data line and a second electrode electrically connected to the first electrode plate of the capacitor.

5. The organic light-emitting display panel according to claim 3 , wherein the first driving voltage line is located in the first metal layer, and the first driving voltage line extends in the first direction.

6. The organic light-emitting display panel according to claim 2 , wherein the second reference voltage line is located in a second metal layer different from the first metal layer.

7. The organic light-emitting display panel according to claim 6 , wherein the second reference voltage line is electrically connected to the first electrode of the second switch transistor via a through hole.

8. The organic light-emitting display panel according to claim 6 , wherein the first electrode plate of the capacitor is located in the second metal layer.

9. The organic light-emitting display panel according to claim 6 , wherein the organic light-emitting display panel further comprises a second driving voltage line electrically connected to the first driving voltage line.

10. The organic light-emitting display panel according to claim 9 , wherein the second driving voltage line is located in the second metal layer and extends in the second direction.

11. The organic light-emitting display panel according to claim 6 , wherein the organic light-emitting display panel further comprises a scan line extending in the second direction, and the scan line is electrically connected to the gate electrode of the second switch transistor.

12. The organic light-emitting display panel according to claim 11 , wherein the organic light-emitting display panel further comprises a light-emitting control line extending in the second direction, and the light-emitting control line is electrically connected to the gate electrode of the first switch transistor.

13. The organic light-emitting display panel according to claim 12 , wherein the scan line, the gate electrode of the second switch transistor, the light-emitting control line, and the gate electrode of the first switch transistor are all located in a third metal layer.

14. The organic light-emitting display panel according to claim 13 , wherein the third metal layer and the second metal layer are located in a same film layer.

15. The organic light-emitting display panel according to claim 13 , wherein the second metal layer is located between the third metal layer and the first metal layer.

16. The organic light-emitting display panel according to claim 1 , further comprising:
an anode;
an organic light-emitting material layer arranged on the anode; and
a cathode arranged on the organic light-emitting material layer,
wherein the first reference voltage line or the second reference voltage line is arranged in a same film layer as the anode.

17. The organic light-emitting display panel according to claim 1 , comprising:
a plurality of sub-pixels arranged in a matrix, wherein each of the plurality of sub-pixels comprises the first switch transistor, the second switch transistor and the driving transistor,
wherein the first electrodes of the first switch transistors of all sub-pixels in a same column of the matrix are electrically connected to a same first reference voltage line; and the first electrodes of the second switch transistors of all sub-pixels in a same row of the matrix are electrically connected to a same second reference voltage line.

18. The organic light-emitting display panel according to claim 1 , wherein a reference voltage transmitted by the first reference voltage line is a positive potential and a reference voltage transmitted by the second reference voltage line is a negative potential.

19. An organic light-emitting display device, comprising:
an organic light-emitting display panel comprising:
a substrate;
a semiconductor of a first switch transistor arranged on the substrate;
a semiconductor of a second switch transistor arranged on the substrate;
a semiconductor of a driving transistor arranged on the substrate and having one or more bending portions;
a gate insulation layer covering the semiconductor of the first switch transistor, the semiconductor of the second switch transistor, and the semiconductor of the driving transistor;
a gate electrode of the first switch transistor located on the gate insulation layer and overlapping the semiconductor of the first switch transistor;
a gate electrode of the second switch transistor located on the gate insulation layer and overlapping the semiconductor of the second switch transistor;
a gate electrode of the driving transistor located on the gate insulation layer and overlapping the semiconductor of the driving transistor;
an interlayer insulation layer covering the gate electrode of the first switch transistor, the gate electrode of the second switch transis

Assignees

• Shanghai Tianma Am Oled Co Ltd

Inventors

• Xin Yu
• Li Yue
• Han Lijing

Classifications

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G3/3291

  in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2310/0251

  Precharge or discharge of pixel before applying new pixel voltage · CPC title