Display device and method for preparing the same

Patent metadata

Field	Value
Publication number	US-11031571-B2
Application number	US-201916622869-A
Country	US
Kind code	B2
Filing date	Apr 30, 2019
Priority date	May 23, 2018
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

The present disclosure provides a display device and a method for preparing the same. The display device includes a first base; a transparent electrode arranged on the first base; a display substrate arranged on a side of the first base proximate to the transparent electrode and opposite to the first base, the display substrate comprising a cathode located on a side of the display substrate proximate to the first base; and a supporting body located between the transparent electrode and the cathode and configured to electrically conduct the transparent electrode and the cathode.

First claim

What is claimed is:

1. A display device, comprising:
a first base;
a transparent electrode arranged on the first base;
a display substrate arranged on a side of the first base proximate to the transparent electrode and opposite to the first base, the display substrate comprising a cathode located on a side of the display substrate proximate to the first base; and
a supporting body located between the transparent electrode and the cathode and configured to electrically conduct the transparent electrode and the cathode,
wherein the supporting body comprises monodisperse particles and a conductive layer wrapping the monodisperse particles, the transparent electrode and the cathode being electrically conducted through the conductive layer.

2. The display device of claim 1 , wherein the supporting body comprises a moisture absorbing layer arranged at a periphery of the monodisperse particles, the moisture absorbing layer being configured to prevent external moisture from entering the display device.

3. The display device of claim 2 , wherein a material of the moisture absorbing layer is a hygroscopic polymer selected from one or more of acrylonitrile, acrylamide, and polyvinyl alcohol, or a resin material doped with hygroscopic particles selected from one or more of SiO 2 , TiO 2 , CaO, and BaO.

4. The display device of claim 2 , further comprises an overcoat arranged on the first base, and the groove structure is arranged on a surface of the overcoat.

5. The display device of claim 1 , wherein a material of the monodisperse particles is polystyrene, polyacrylate, silica or titania.

6. The display device of claim 1 , wherein the first base comprises a display region and a non-display region located at a periphery of the display region, the non-display region comprises a first sealing region, a side of the first sealing region proximate to a center of the first base is provided with a plurality of supporting bodies, the plurality of supporting bodies is arranged around a periphery of the display region.

7. The display device of claim 6 , wherein the plurality of supporting bodies is arranged at equal intervals around a display panel region.

8. The display device of claim 6 , wherein the display region comprises a plurality of sub-pixel regions, and each of the plurality of supporting bodies is arranged between at least a portion of two adjacent sub-pixel regions.

9. The display device of claim 8 , wherein the supporting body is arranged between every two adjacent pixel regions.

10. The display device of claim 6 , wherein the first base further comprises a second sealing region, the second sealing region is located between the first sealing region and the display region, and the second sealing region is provided with the supporting body.

11. The display device of claim 1 , wherein the display substrate further comprises an anode located on a side of the cathode away from the first base and a light-emitting layer located between the anode and the cathode, the cathode being a plate-shaped electrode covering the entire display substrate.

12. The display device of claim 1 , wherein an orthogonal projection of the cathode on the first base overlaps an orthogonal projection of the transparent electrode on the first base.

13. A method for preparing the display device of claim 1 , comprising:
providing a first base;
forming a first transparent electrode on the base;
preparing a display substrate arranged opposite to the first base, the display substrate comprising a cathode located on a side of the display substrate proximate to the first base; and
forming a supporting body located between the transparent electrode and the cathode and configured to electrically conduct the transparent electrode and the cathode.

14. The method of claim 13 , further comprising:
forming an anode of the display substrate, the anode being located on a side of the cathode away from the first base; and
forming a light-emitting layer located between the anode and the cathode, the cathode being a plate-shaped electrode covering the entire display substrate.

15. A display device, comprising:
a first base;
a transparent electrode arranged on the first base;
a display substrate arranged on a side of the first base proximate to the transparent electrode and opposite to the first base, the display substrate comprising a cathode located on a side of the display substrate proximate to the first base; and
a supporting body located between the transparent electrode and the cathode and configured to electrically conduct the transparent electrode and the cathode,
the supporting body comprises monodisperse particles, the first base has a plurality of groove structures surrounding the monodisperse particles, and the monodisperse particles are arranged within the plurality of groove structures in one-to-one correspondence manner.

16. The display device of claim 15 , wherein the display device further comprises a plurality of metal blocks, an orthogonal projection of the plurality of metal blocks on the first base falls within an orthogonal projection of the transparent electrode on the first base, and the plurality of groove structure penetrates the transparent electrode in a direction perpendicular to the first base and extends into the plurality of metal blocks.

17. The display device of claim 15 , wherein a surface of the monodisperse particles is sequentially wrapped with a conductive layer and a moisture absorbing layer, and the groove structure surrounds the monodisperse particles having a surface sequentially wrapped with the conductive layer and the moisture absorbing layer.

18. The display device of claim 15 , wherein the monodisperse particles having a surface wrapped with the moisture absorbing are arranged in the groove structures in one-to-one correspondence manner, the conductive layer is arranged on a side of the monodisperse particles having a surface wrapped with the moisture absorbing layer away from the first base and covers the monodisperse particles, and the conductive layer and the transparent electrode are integrated.

19. A display device, comprising:
a first base;
a transparent electrode arranged on the first base;
a display substrate arranged on a side of the first base proximate to the transparent electrode and opposite to the first base, the display substrate comprising a cathode located on a side of the display substrate proximate to the first base; and
a supporting body located between the transparent electrode and the cathode and configured to electrically conduct the transparent electrode and the cathode,
wherein the supporting body is arranged in contact with a surface of the transparent electrode facing away from the first base and conductive in a direction perpendicular to the first base, and a material for preparing the supporting body comprises a hygroscopic material.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Jiewei
• Tian Biao
• Jin Tao
• Chen Shihlun
• Yin Chuan

Classifications

• H10K59/874

  including getter material or desiccant · CPC title

• H10K59/8722 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/8721

  Metallic sealing arrangements · CPC title

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K50/824

  combined with auxiliary electrodes · CPC title