IP Library Granted Patent US 10,516,015
Granted Patent B2
US 10,516,015 · App. 16/147,582 · Granted Dec 24, 2019

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

Inventors: Yu Xin (Shanghai, CN); Yue Li (Shanghai, CN); Lijing Han (Shanghai, CN)
Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
H01L27/3276G09G3/3266G09G3/3291H01L27/124G09G2300/0426
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Quick Facts
Patent No.
US 10,516,015
App. No.
16/147,582
Granted
Dec 24, 2019
Kind
B2
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.

Claims (60)

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 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.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2022
From: SHANGHAI TIANMA AM-OLED CO.,LTD.
To: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.; WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
Reel/Frame 059498/0307 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2018
From: XIN, YU; LI, YUE; HAN, LIJING
To: SHANGHAI TIANMA AM-OLED CO., LTD.
Reel/Frame 047577/0857 →
Priority Claims (1)
CN 2018 1 0494363 · May 22, 2018 · national
Continuity (1)
Related Publication 20190035875A1 · Jan 31, 2019
Cited By (3)
US 12,193,292 US 12,317,717 US 12,419,166