Counter substrate, display panel, and display apparatus

Patent metadata

Field	Value
Publication number	US-12114535-B2
Application number	US-202017428630-A
Country	US
Kind code	B2
Filing date	Oct 19, 2020
Priority date	Oct 19, 2020
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A counter substrate is provided. The counter substrate includes a bank layer on a base substrate and defining a plurality of bank apertures; a quantum dots material layer on the base substrate, the quantum dots material layer including a plurality of quantum dots blocks respectively in at least some of the plurality of bank apertures; and a support layer on a side of the quantum dots material layer and the bank layer away from the base substrate. The support layer includes one or more support portions, orthographic projections of which on the base substrate adjacent to a periphery of an orthographic projection of a respective one of the plurality of bank apertures on the base substrate. An orthographic projection of the bank layer on the base substrate at least partially overlaps with an orthographic projection of the support layer on the base substrate.

First claim

What is claimed is:

1. A counter substrate, comprising:
a base substrate;
a bank layer on the base substrate, the bank layer defining a plurality of bank apertures;
a quantum dots material layer on the base substrate, the quantum dots material layer comprising a plurality of quantum dots blocks respectively in at least some of the plurality of bank apertures; and
a support layer on a side of the quantum dots material layer and the bank layer away from the base substrate;
wherein the support layer comprises one or more support portions;
orthographic projections of the one or more support portions on the base substrate are adjacent to a periphery of an orthographic projection of a respective one of the plurality of bank apertures on the base substrate;
the bank layer and the support layer are in an inter-subpixel region of the counter substrate; and
an orthographic projection of the bank layer on the base substrate at least partially overlaps with an orthographic projection of the support layer on the base substrate;
wherein the support layer is a lens layer comprising one or more lens portions; orthographic projections of the one or more lens portions on the base substrate are adjacent to a periphery of an orthographic projection of a respective one of the plurality of bank apertures on the base substrate;
the bank layer and the lens layer are in the inter-subpixel region of the counter substrate; and
an orthographic projection of the bank layer on the base substrate at least partially overlaps with an orthographic projection of the lens layer on the base substrate.

2. The counter substrate of claim 1 , wherein the orthographic projection of the bank layer on the base substrate covers the orthographic projection of the lens layer on the base substrate.

3. The counter substrate of claim 1 , wherein the lens layer is a unitary net structure with a plurality of openings; and
a respective one of the plurality of openings is surrounded by lens portions of the lens layer.

4. The counter substrate of claim 1 , further comprising a low refractive index material in a space between adjacent lens portions of the lens layer; wherein a refractive index of the low refractive index material is less than a refractive index of the one or more lens portions.

5. The counter substrate of claim 1 , wherein a width of the respective one of the one or more lens portions on a side closer to the bank layer along a direction from a first adjacent bank aperture to a second adjacent bank aperture is substantially same as a width of the bank layer on a side closer to the respective one of the one or more lens portions along the direction from the first adjacent bank aperture to the second adjacent bank aperture.

6. The counter substrate of claim 1 , wherein the lens layer is disposed substantially throughout the inter-subpixel region.

7. The counter substrate of claim 1 , wherein the lens layer is limited in a portion of the inter-subpixel region between adjacent subpixels of different colors, and is absent in a portion of the inter-subpixel region between adjacent subpixels of same color.

8. The counter substrate of claim 1 , further comprising a reflective coating layer on a side of the lens layer away from the base substrate;
wherein the reflective coating layer is in the inter-subpixel region of the counter substrate;
the orthographic projection of the bank layer on the base substrate covers an orthographic projection of the reflective coating layer on the base substrate; and
the reflective coating layer comprises one or more reflective portions respectively coated on surfaces of the one or more lens portions.

9. The counter substrate of claim 8 , wherein the reflective coating layer is a unitary net structure with a plurality of openings; and
a respective one of the plurality of openings is surrounded by reflective portions of the reflective coating layer.

10. The counter substrate of claim 1 , further comprising an overcoat layer on a side of the quantum dots material layer and the bank layer away from the base substrate;
wherein the lens layer is on a side of the overcoat layer away from the base substrate.

11. The counter substrate of claim 1 , further comprising a black matrix in the inter-subpixel region of the counter substrate; and
the orthographic projection of the bank layer on the base substrate covers an orthographic projection of the black matrix on the base substrate.

12. The counter substrate of claim 1 , further comprising a color filter layer on the base substrate;
wherein the color filter layer comprises a plurality of color filter blocks respectively in the plurality of bank apertures.

13. A display panel, comprising:
an array substrate; and
a counter substrate facing the array substrate;
wherein the counter substrate comprises:
a base substrate;
a bank layer on the base substrate, the bank layer defining a plurality of bank apertures;
a quantum dots material layer on the base substrate, the quantum dots material layer comprising a plurality of quantum dots blocks respectively in at least some of the plurality of bank apertures; and
a support layer on a side of the quantum dots material layer and the bank layer away from the base substrate;
wherein the support layer comprises one or more support portions;
orthographic projections of the one or more support portions on the base substrate are adjacent to a periphery of an orthographic projection of a respective one of the plurality of bank apertures on the base substrate;
the bank layer and the support layer are in an inter-subpixel region of the display panel; and
an orthographic projection of the bank layer on the base substrate at least partially overlaps with an orthographic projection of the support layer on the base substrate;
wherein the support layer is a lens layer comprising one or more lens portions;
orthographic projections of the one or more lens portions on the base substrate are adjacent to a periphery of an orthographic projection of a respective one of the plurality of bank apertures on the base substrate;
the bank layer and the lens layer are in the inter-subpixel region of the counter substrate; and
an orthographic projection of the bank layer on the base substrate at least partially overlaps with an orthographic projection of the lens layer on the base substrate.

14. The display panel of claim 13 , wherein the one or more lens portions of the lens layer are in direct contact with a second inorganic encapsulating sub-layer of an encapsulating layer in the array substrate.

15. The display panel of claim 13 , wherein a focal length of a lens portion of the lens layer is expressed as:
1 /f= 1/ U+ 1/ V;
wherein f stands for the focal length of the lens portion; U stands for a first light path distance along a first light path of an edge light at a maximum view angle of an adjacent light emitting block with respect to the lens portion travelling from the adjacent light emitting block to the lens portion; V stands for a second light path distance along a second light path of the edge light from the lens portion to the bank layer;
U=H /sin(α);

V =( h 1 +h )/sin(β);

α is a first angle between the first light path and a plane containing a surface of the array substrate in direct contact with the lens portion;
β is a second angle between the plane containing the surface of the array substrate in direct contact with the lens portion and the second light path;
H is a shortest distance between a surface of the adjacent light emitting block and the plane containing the surface of the array substrat

Assignees

• Boe Technology Group Co Ltd

Inventors

• Yue Yang
• Shu Shi
• Yao Qi
• Huang Wei
• Huang Haitao
• Li Shipei
• Yu Yong
• Li Xiang
• Xu Chuanxiang
• Liu Wenqu

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• G02F1/133614 Primary

  using photoluminescence, e.g. phosphors illuminated by UV or blue light · CPC title

• G02B5/201

  in the form of arrays · CPC title