Display panel and driving method therefor, and display apparatus

Patent metadata

Field	Value
Publication number	US-12471471-B2
Application number	US-202117756608-A
Country	US
Kind code	B2
Filing date	Jan 19, 2021
Priority date	Jan 21, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A display panel includes: a base substrate, light-emitting devices on the base substrate, and barrier structures. The light-emitting device includes: a first electrode and a second electrode arranged in a stacked manner, and a light-emitting functional layer between the first electrode and the second electrode. The barrier structures are located on a film layer between the light-emitting functional layer and the base substrate. The orthographic projection of the barrier structure on the base substrate is between the orthographic projections of adjacent light-emitting devices on the base substrate. The barrier structure is configured to generate, under the control of an electrical signal, an electric field in a direction perpendicular to a plane where the base substrate is located.

First claim

What is claimed is:

1 . A display panel, comprising:
a base substrate; wherein the base substrate is a silicon substrate; a plurality of light-emitting devices on the base substrate, wherein the light-emitting device comprises:
a first electrode and a second electrode arranged in a stacked manner, and
a light-emitting functional layer between the first electrode and the second electrode; and
barrier structures on a film layer between the light-emitting functional layer and the base substrate; wherein the barrier structure comprises a dielectric layer and a conductive layer arranged in a stacked manner, the dielectric layer is in contact with the light-emitting functional layer, a surface of a side of the dielectric layer close to the light-emitting functional layer is a rough surface, the first electrode is in contact with a surface of a side of the base substrate close to the light-emitting functional layer, the barrier structures are arranged on the side of the base substrate close to the light-emitting functional layer, an orthographic projection of the barrier structure on the base substrate is between orthographic projections of light-emitting devices, adjacent to the barrier structure, on the base substrate, and the orthographic projection of the barrier structure on the base substrate dose not overlap an orthographic projection of the first electrode on the base substrate; wherein the barrier structure is configured to generate, under control of an electrical signal, an electric field in a direction perpendicular to a plane where the base substrate is located.

2 . The display panel according to claim 1 ,
wherein the dielectric layer is located between the conductive layer and the light-emitting functional layer.

3 . The display panel according to claim 2 , wherein:
the first electrodes of the plurality of light-emitting devices are arranged separately; the conductive layer is arranged on a same layer as at least one film layer in the first electrode.

4 . The display panel according to claim 3 , wherein the first electrode comprises:
a first conductive electrode, a metal reflective layer and a second conductive electrode sequentially away from the base substrate; wherein the conductive layer is arranged on a same layer as the first conductive electrode.

5 . The display panel according to claim 2 , wherein a material of the dielectric layer comprises at least one of silicon dioxide or silicon nitride.

6 . The display panel according to claim 1 , wherein the barrier structure is a ring-shaped structure surrounding the light-emitting device.

7 . The display panel according to claim 6 , wherein each of the barrier structures surrounds a respective one of the plurality of light-emitting devices, and each of the plurality of light-emitting devices in the display panel is surrounded by a respective one of the barrier structures.

8 . The display panel according to claim 6 , wherein the plurality of light-emitting devices are arranged in an array in a first direction and a second direction, and the first direction and the second direction intersect with each other; and
in the first direction, two adjacent barrier structures are separated by at least one light-emitting device.

9 . The display panel according to claim 8 , wherein each light-emitting device, in a row of light-emitting devices arranged in the second direction, is surrounded by a respective one of the barrier structures.

10 . The display panel according to claim 8 , wherein in the second direction, two adjacent barrier structures are separated by at least one light-emitting device.

11 . The display panel according to claim 1 , further comprising:
a power signal line; wherein the power signal line is coupled with the conductive layer, and configured to provide the electrical signal to the conductive layer.

12 . A display apparatus, comprising: the display panel according to claim 1 .

13 . A driving method for the display panel according to claim 1 , comprising:
loading the electrical signal to the barrier structure, so as to control the barrier structure to generate the electric field in the direction perpendicular to the plane where the base substrate is located, so that carriers in the light-emitting functional layer move in the direction perpendicular to the plane where the base substrate is located under an action of the electric field.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Yue Han
• Zhang Can
• Xuan Minghua
• Chen Xiaochuan

Classifications

• H10K59/80518

  Reflective anodes, e.g. ITO combined with thick metallic layers · CPC title

• H10K59/131

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

• H10K50/818

  Reflective anodes, e.g. ITO combined with thick metallic layers · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K2102/3026

  Top emission · CPC title