Organic electroluminescent display panel, display device, and detection method

Patent metadata

Field	Value
Publication number	US-11239285-B2
Application number	US-202016920825-A
Country	US
Kind code	B2
Filing date	Jul 6, 2020
Priority date	Jul 22, 2019
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Embodiments of the present disclosure provide an organic electroluminescent display panel, a display device, and a detection method. For the organic electroluminescent display panel, the light-emitting control lines include two first light-emitting control lines electrically connected to the two light-emitting control circuits; and each first light-emitting control line includes: a surrounding portion surrounding the hole area, and a connecting portion electrically connecting two ends of the surrounding portion to the two light-emitting control circuits, the connecting portion is electrically connected by a control component at a position of being connected to one light-emitting control circuit, and the control component is configured to disconnect the light-emitting control circuit from the connecting portion when defect detection is performed, to determine a cracking state of the hole area according to a light-emitting state of pixels driven by the connecting portion between the control component and the hole area.

First claim

The invention claimed is:

1. An organic electroluminescent display panel, comprising a display area and a non-display area surrounding the display area, the display area comprises a hole area; wherein,
the non-display area comprises two light-emitting control circuits, and the two light-emitting control circuits are respectively located on two sides of the display area;
the display area comprises a plurality of light-emitting control lines, and the light-emitting control lines comprise a first light-emitting control line electrically connected to the two light-emitting control circuits; and
the first light-emitting control line comprises: a surrounding portion surrounding the hole area, and a connecting portion respectively electrically connecting both ends of the surrounding portion to the two light-emitting control circuits, wherein the connecting portion is electrically connected one light-emitting control circuit through by a control component, and the control component is configured to disconnect the light-emitting control circuit from the connecting portion when defect detection is performed, to determine a cracking state of the hole area according to a light-emitting state of pixels driven by the connecting portion between the control component and the hole area.

2. The organic electroluminescent display panel according to claim 1 , further comprising two first light-emitting control lines and two control components; wherein,
the two first light-emitting control lines are respectively located on two sides of the hole area, and the surrounding portions of the two first light-emitting control lines are semi-circular, and respectively surround opposite sides of the hole area.

3. The organic electroluminescent display panel according to claim 2 , wherein one control component is located on a side of the hole area facing one light-emitting control circuit, and the other control component is located on a side of the hole area facing the other light-emitting control circuit.

4. The organic electroluminescent display panel according to claim 2 , further comprising two leads, and two hole test pads located in the non-display area; wherein,
one end of at least one of the leads is electrically connected to one of the control components, and other end of at least one of the leads is electrically connected to one of the hole test pads.

5. The organic electroluminescent display panel according to claim 4 , wherein the control component is a switch transistor; and
a gate of the switch transistor is electrically connected to one of the leads, a first terminal of the switch transistor is electrically connected to the connecting portion, and a second terminal of the switch transistor is electrically connected to the light-emitting control circuit.

6. The organic electroluminescent display panel according to claim 4 , wherein one side of the non-display area further comprises a panel test pad; and
the hole test pad and the panel test pad are located on a same side of the non-display area.

7. The organic electroluminescent display panel according to claim 2 , wherein the light-emitting control lines further comprise a plurality of second light-emitting control lines, and the plurality of the second light-emitting control lines are located on one side of the hole area between the two first light-emitting control lines, and are electrically connected to one of the light-emitting control circuits; and
the light-emitting control lines further comprise a plurality of third light-emitting control lines, the plurality of third light-emitting control lines are located on other side of the hole area between the two first light-emitting control lines, and are electrically connected to other one of light-emitting control circuits.

8. The organic electroluminescent display panel according to claim 7 , wherein the light-emitting control lines further comprise a plurality of fourth light-emitting control lines; and
one end of at least one of the fourth light-emitting control lines is electrically connected to one of the light-emitting control circuits, and other end of at least one of the fourth light-emitting control lines is electrically connected to other one of the light-emitting control circuits.

9. The organic electroluminescent display panel according to claim 1 , wherein a material of the first light-emitting control line is molybdenum.

10. The organic electroluminescent display panel according to claim 9 , further comprising: a plurality of data lines and power lines; wherein
a material of the data line and the power line comprises aluminum.

11. A display device, comprising the organic electroluminescent display panel according to claim 1 .

12. The display device according to claim 11 , further comprising two first light-emitting control lines and two control components; wherein,
the two first light-emitting control lines are respectively located on two sides of the hole area, and the surrounding portions of the two first light-emitting control lines are semi-circular, and respectively surround opposite sides of the hole area.

13. The display device according to claim 12 , wherein one control component is located on a side of the hole area facing one light-emitting control circuit, and the other control component is located on a side of the hole area facing the other light-emitting control circuit.

14. The display device according to claim 12 , wherein the organic electroluminescent display panel further comprising two leads, and two hole test pads located in the non-display area; wherein,
one end of at least one of the leads is electrically connected to one of the control components, and other end of at least one of the leads is electrically connected to one of the hole test pads.

15. The display device according to claim 14 , wherein the control component is a switch transistor; and
a gate of the switch transistor is electrically connected to one of the leads, a first terminal of the switch transistor is electrically connected to the connecting portion, and a second terminal of the switch transistor is electrically connected to the light-emitting control circuit.

16. The display device according to claim 14 , wherein one side of the non-display area further comprises a panel test pad; and
the hole test pad and the panel test pad are located on a same side of the non-display area.

17. The display device according to claim 12 , wherein the light-emitting control lines further comprise a plurality of second light-emitting control lines, and the plurality of the second light-emitting control lines are located on one side of the hole area between the two first light-emitting control lines, and are electrically connected to one of the light-emitting control circuits; and
the light-emitting control lines further comprise a plurality of third light-emitting control lines, the plurality of third light-emitting control lines are located on other side of the hole area between the two first light-emitting control lines, and are electrically connected to other one of light-emitting control circuits.

18. The display device according to claim 17 , wherein the light-emitting control lines further comprise a plurality of fourth light-emitting control lines; and
one end of at least one of the fourth light-emitting control lines is electrically connected to one of the light-emitting control circuits, and other end of at least one of the fourth light-emitting control lines is electrically connected to other one of the light-emitting control circuits.

19.

Assignees

• Chongqing Boe Display Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wu Xinwei
• Zhang Zhen
• Zhang Wei
• Li Cunzhi
• Kwak Jonguk
• Xu Yanyan

Classifications

• H10K59/88

  Dummy elements, i.e. elements having non-functional features · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• G09G3/3225

  using an active matrix · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• Y02E10/549

  Organic PV cells · CPC title