Display panel, display and displaying method

Patent metadata

Field	Value
Publication number	US-10770521-B2
Application number	US-201815940023-A
Country	US
Kind code	B2
Filing date	Mar 29, 2018
Priority date	Oct 27, 2017
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

Embodiments of the present disclosure provide a display panel, a display and a displaying method. The display panel includes: a first base substrate and a second base substrate arranged to be opposite to each other; a liquid crystal layer between the first base substrate and the second base substrate; and a light emitting device layer for emitting light, a grating layer of partial light transmission and a light converting layer arranged at a side of the second base substrate facing towards the first base substrate.

First claim

The invention claimed is:

1. A display panel comprising:
a first base substrate and a second base substrate arranged to be opposite to each other;
a liquid crystal layer configured between the first base substrate and the second base substrate; and
a light emitting device layer at a side of the first base substrate facing towards the second base substrate; and
a grating layer between the light emitting device layer and the liquid crystal layer;
wherein the grating layer comprises a plurality of light blocking portions and a plurality of light transmitting portions alternatingly arranged therein, the light blocking portions being reflective;
wherein the display panel further comprises a light converting layer provided on each of the light blocking portions, wherein the light emitting device layer, the grating layer and the light converting layer are arranged in order in a direction from the first base substrate to the second base substrate; and
wherein a second insulating layer and a second electrode layer are provided between the grating layer and the light converting layer, wherein the second electrode layer comprises a plurality of second sub electrodes, the light converting layer comprises a plurality of light converting units, an orthographic projection of each of the light converting units onto the first base substrate being of superposition with an orthographic projection of a corresponding one of the second sub electrodes onto the first base substrate, and the orthographic projection of each of the light converting units onto the first base substrate is within an orthographic projection of a corresponding one of the light blocking portions on the first base substrate.

2. The display panel according to claim 1 , wherein the light blocking portions are made of metal.

3. The display panel according to claim 1 , wherein the light emitting device layer further comprises a drive circuit.

4. The display panel according to claim 3 , wherein each of the second sub electrodes is electrically connected with the drive circuit via a through hole passing through the second insulating layer and the light emitting device layer.

5. The display panel according to claim 1 , further comprising:
a first electrode layer on a surface of the second base substrate facing towards the first base substrate, the first electrode layer being located between the second base substrate and the liquid crystal layer; and
a first insulating layer at a side of the first base substrate facing towards the second base substrate, the first insulating layer isolating the liquid crystal layer from the light converting layer and the grating layer on the first base substrate.

6. The display panel according to claim 1 , wherein the second electrode layer is made of a transparent conductive material.

7. The display panel according to claim 1 , wherein the light converting layer is a quantum dot containing film.

8. The display panel according to claim 1 , wherein the light emitting device layer comprises a plurality of light emitting devices arranged in an array.

9. The display panel according to claim 1 , further comprising a polarizing sheet located at a side of the second base substrate facing away from the liquid crystal layer.

10. The display panel according to claim 1 , further comprising a color filter layer disposed on the light blocking portions, wherein the light emitting device layer, the grating layer and the color filter layer are arranged in order in a direction from the first base substrate to the second base substrate.

11. A display comprising the display panel according to claim 1 .

12. The display according to claim 11 , further comprising a light source disposed at a side of the second base substrate facing away from the light emitting device layer.

13. A displaying method of the display panel according to claim 1 , wherein the method comprises a first display mode and a second display mode; wherein,
the first display mode comprises steps of:
controlling the light emitting device layer to emit no light; and
driving deflection of liquid crystal molecules in the liquid crystal layer; and

the second display mode comprises steps of:
controlling the light emitting device layer to emit light; and
driving deflection of liquid crystal molecules in the liquid crystal layer.

14. The method according to claim 13 , wherein the light emitting device layer further comprises a drive circuit, and
wherein under the second display mode, driving deflection of liquid crystal molecules in the liquid crystal layer comprises: controlling, by the drive circuit, a region of the light transmitting portions corresponding to the liquid crystal layer to transmit light therethrough.

Assignees

• Boe Technology Group Co Ltd
• Boe Techmology Group Co Ltd

Inventors

• Zhou Tingting
• Zhang Bin
• Yao Jikai
• Yang Yang

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/878

  comprising reflective means · CPC title

• H10K59/50

  OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G02B30/30

  involving parallax barriers · CPC title