Display panel, method for manufacturing display panel and display device

Patent metadata

Field	Value
Publication number	US-12575290-B2
Application number	US-202117799462-A
Country	US
Kind code	B2
Filing date	Sep 2, 2021
Priority date	Sep 2, 2021
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

Provided are a display panel and a method for manufacturing the same, and a display device. The display panel includes: a first base substrate; color control units on a side of light-emitting units away from the first base substrate, the color control units correspond to the light-emitting units one to one; at least part of the light-emitting units are each provided with a diaphragm structure, the diaphragm structures are located between the light-emitting units and the color control units, each diaphragm structure is provided with a light passing portion therein; each diaphragm structure is configured to block light from the light-emitting unit and directed to the color control units not corresponding to the light-emitting unit, and allow part of light from the light-emitting unit and directed to the color control unit corresponding to the light-emitting unit to be transmitted at the light passing portion corresponding to the light-emitting unit.

First claim

What is claimed is:

1 . A display panel, comprising:
a first base substrate; a light-emitting unit array and a color control unit array, the color control unit array being located on a side of the light-emitting unit array away from the first base substrate, and color control units in the color control unit array correspond to light-emitting units in the light-emitting unit array one to one; at least part of the light-emitting units are provided with diaphragm structures corresponding to the light-emitting units one to one, the diaphragm structures being located between the light-emitting units and the color control units, and each diaphragm structure being provided with a light passing portion therein; an orthographic projection of the light passing portion on the first base substrate is overlapped with an orthographic projection of the light-emitting unit, corresponding to the light passing portion, on the first base substrate, and an area of the orthographic projection of the light passing portion on the first base substrate is smaller than an area of the orthographic projection of the light-emitting unit, corresponding to the light passing portion, on the first base substrate; each of the diaphragm structures is configured to block light emitted by the light-emitting unit corresponding thereto and directed to the color control units not corresponding to the light-emitting unit, and to allow part of light emitted by the light-emitting unit and directed to the color control unit corresponding to the light-emitting unit to be transmitted at the light passing portion corresponding to the light-emitting unit, wherein the display panel further comprises a second package structure, a color filter pattern array and a third package structure sequentially located on a side of the color control units away from the first base substrate, and the third package structure is configured to package a surface of the color filter pattern array away from the base substrate and side surfaces of the color filter pattern array.

2 . The display panel of claim 1 , wherein the orthographic projection of the light passing portion on the first base substrate is located within the orthographic projection of the light-emitting unit, corresponding to the light passing portion, on the first base substrate.

3 . The display panel of claim 2 , wherein the diaphragm structure is configured to block light emitted by the light-emitting unit corresponding thereto, directed to the color control units not corresponding to the light-emitting unit and having an emergent angle smaller than or equal to a preset angle, wherein the emergent angle of the light is an included angle formed between the light and a normal of the first base substrate;
at least one dielectric layer is provided between the diaphragm structures and the light-emitting units; a distance s between a first edge of the orthographic projection of the light passing portion on the first base substrate and a second edge, adjacent to the first edge, of the orthographic projection of the light-emitting unit, corresponding to the light passing portion, on the first base substrate satisfies the following conditions:
s=L 2− L 1;

wherein L1 is a spacing between any two adjacent light-emitting units, and L2 is an offset of the light emitted by the light-emitting unit and having the emergent angle equal to the preset angle when the light reaches a layer structure where the diaphragm structure is located;

L
⁢
2

=

∑

i
=
1

M

d
i
*

⁢
tan
⁢

θ
i

,

θ
i

=

arcsin
⁢

(

N
1
*

⁢
sin
⁢

θ
1

N
i

)

,

M is the number of dielectric layers between the diaphragm structures and the light-emitting units corresponding to the diaphragm structures, d i is a thickness of an i th dielectric layer which is located between the diaphragm structures and the light-emitting units corresponding to the diaphragm structures and is close to the light-emitting units, and θ i is an included angle formed between a direction in which the light emitted by the light-emitting unit and having the emergent angle equal to the preset angle is propagated when the light reaches inside of the i th dielectric layer and the normal of the first base substrate, and θ i is equal to the preset angle, and N i is a refractive index of the i th dielectric layer.

4 . The display panel of claim 1 , wherein the orthographic projection of the light passing portion on the first base substrate and the orthographic projection of the light-emitting unit, corresponding to the light passing portion, on the first base substrate are the same in shape and having center points coincide with each other, and
the orthographic projection of the light passing portion on the first base substrate and an orthographic projection of the color control unit, corresponding to the light passing portion, on the first base substrate are the same in shape and having center points coincide with each other.

5 . The display panel of any one of claim 1 , further comprising:
a first package structure located between the light-emitting unit array and the color control unit array, the first package structure being configured to package the light-emitting unit array; the color control units are in contact with the first package structure.

6 . The display panel of any one of claim 1 , further comprising:
a first package structure located between the light-emitting unit array and the color control unit array, the first package structure being configured to package the light-emitting unit array; wherein the second package structure and a filling layer are located between at least part of the color control units in the color control unit array and the first package structure, the filling layer being located between the second package structure and the first package structure, and the second package structure being configured to package the at least part of the color control units.

7 . The display panel of claim 5 , wherein the diaphragm structures are embedded in the first package structure, and
the first package structure comprises:
a first

Assignees

• Boe Technology Group Co Ltd

Inventors

• Jin Qian
• Zhao Dejiang
• Huang Wei
• Sun Qian
• Lu Tianhao
• Li Yang
• Tian Yu

Classifications

• H10K59/351

  comprising more than three subpixels, e.g. red-green-blue-white [RGBW] · CPC title

• H10K59/8792

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

• H10K59/879

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

• H10K59/873

  Encapsulations · CPC title

• H10K50/858

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