Display panel and display device

Patent metadata

Field	Value
Publication number	US-10831053-B2
Application number	US-201715758698-A
Country	US
Kind code	B2
Filing date	Sep 13, 2017
Priority date	Jan 6, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

This disclosure provides a display panel, including a first substrate, a second substrate, a liquid crystal layer between them, a first black matrix layer at a side of the first substrate facing the second substrate, a second black matrix layer at a side of the second substrate facing the first substrate, and an electrode layer at a side of at least one of the first substrate and the second substrate facing the liquid crystal layer. Each pixel unit includes at least one pixel portion. A region of the first black matrix layer corresponding to the pixel portion includes a light shielding portion and a light transmission portion, a region of the second black matrix layer corresponding to the light shielding portion is provided with a light through hole, an orthogonal projection of the light shielding portion on the second black matrix layer covers the light through hole.

First claim

The invention claimed is:

1. A display panel, comprising:
a first substrate and a second substrate opposite to each other;
a liquid crystal layer between the first substrate and the second substrate;
a first black matrix layer located at a side of the first substrate facing the second substrate;
a second black matrix layer located at a side of the second substrate facing the first substrate, and
a first electrode layer located at a side of the first substrate facing the liquid crystal layer and a second electrode layer located at a side of the second substrate facing the liquid crystal layer, the first electrode layer and the second electrode layer being configured to generate an electric field in the liquid crystal layer,
wherein the display panel comprises a plurality of pixel units, each pixel unit comprising at least one pixel portion,
wherein a region of the first black matrix layer corresponding to the pixel portion comprises a light shielding portion and a light transmission portion surrounding the light shielding portion, a region of the second black matrix layer corresponding to the light shielding portion is provided with a light through hole, and wherein an orthogonal projection of the light shielding portion on the second black matrix layer covers the light through hole,
wherein each of the first electrode layer and the second electrode layer comprises multiple first electrodes and one second electrode, each first electrode of the first electrodes is a strip electrode, the second electrode is a continuous planar electrode,
wherein the first electrodes of the first electrode layer are located in a same layer and spaced apart from each other, and the first electrodes of the second electrode layer are located in a same layer and spaced apart from each other,
wherein a length extension direction of the first electrodes of the first electrode layer is perpendicular to a length extension direction of the first electrodes of the second electrode layer,
wherein both an orthogonal projection of each first electrode of the first electrodes of the first electrode layer and an orthogonal projection of each first electrode of the first electrodes of the second electrode layer on the second black matrix layer at least partly overlap the light through hole, and
wherein the display panel further comprises an insulating layer between the first electrodes and the second electrode of each of the first electrode layer and the second electrode layer.

2. The display panel according to claim 1 , wherein the first electrodes are arranged between the second electrode and the liquid crystal layer.

3. The display panel according to claim 2 , wherein an interval between two adjacent first electrodes is in a range of about 760 nm˜15600 nm.

4. The display panel according to claim 1 , wherein the light transmission portion is used for converting a color of incident light to the light transmission portion, a predetermined number of pixel units in the plurality of pixel units constitute a repeating group, wherein the light transmission portions corresponding to a same pixel unit in different repeating groups converts the incident light into light of a same color, and the light transmission portions corresponding to different pixel units in a same repeating group convert the incident into light of different colors.

5. The display panel according to claim 4 , wherein the light transmission portion is made of a color resistance material.

6. The display panel according to claim 4 , wherein the light transmission portion is made of a quantum dot material.

7. The display panel according to claim 1 , wherein the display panel further comprises a light diffusion film arranged at a side of the first black matrix layer away from the second substrate.

8. The display panel according to claim 1 , wherein the first black matrix layer is arranged between the first substrate and the liquid crystal layer, the second black matrix layer is arranged between the second substrate and the liquid crystal layer,
wherein the first electrode layer and the second electrode layer are located between the first black matrix layer and the second black matrix layer.

9. The display panel according to claim 1 , wherein the display panel further comprises alignment layers located at two sides of the liquid crystal layer respectively, for performing alignment to liquid crystals of the liquid crystal layer.

10. The display panel according to claim 1 , wherein a thickness of the liquid crystal layer is in a range of about 1 μm˜30 μm.

11. A display device, comprising a backlight module and a display panel according to claim 1 arranged at a light exit side of the backlight module, wherein the backlight module is used for providing natural light for the display panel.

12. The display device according to claim 11 , wherein the backlight module comprises a backlight source for emitting light and an alignment film between the backlight source and the display panel, wherein the alignment film is used for defining a divergence angle of light emitted from the backlight module to be in a range of about 0°˜30°.

13. The display device according to claim 12 , wherein the alignment film comprises a transparent layer and a plurality of light shielding barriers in the transparent layer.

14. The display panel according to claim 11 , wherein the first electrodes are arranged between the second electrode and the liquid crystal layer.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhao Wenqing
• Dong Xue
• Chen Xiaochuan
• Wang Haiyan
• Chen Chenyu
• Li Zhongxiao
• Niu Xiaochen
• Wang Qian
• Zhu Jinye

Classifications

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title