Display panel and display apparatus

Patent metadata

Field	Value
Publication number	US-12501810-B2
Application number	US-202218020629-A
Country	US
Kind code	B2
Filing date	Mar 9, 2022
Priority date	Mar 9, 2022
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A display panel includes: a first base substrate; a light emitting device layer located at a side of the first base substrate, including three light emitting devices respectively located in three sub-pixels; a thin film encapsulation layer located at a side of the light emitting device layer away from the first base substrate; a color filter layer located at a side of the color conversion layer away from the first base substrate, and at least including a first light shielding pattern, a first color filter pattern and a second color filter pattern, wherein the first light shielding pattern defines a plurality of light transmitting areas; a color conversion layer located between the light emitting device layer and the color filter layer, and including a first color conversion pattern, a second color conversion pattern and a transmission pattern respectively located within three sub-pixels.

First claim

The invention claimed is:

1 . A display panel, has a plurality of repeated pixel units, and at least one pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel displaying different colors, wherein the display panel includes:
a first base substrate; a light emitting device layer located at a side of the first base substrate, wherein the light emitting device layer comprises a first light emitting device, a second light emitting device and a third light emitting device, the first light emitting device is located in the first sub-pixel, the second light emitting device is located in the second sub-pixel, the third light emitting device is located in the third sub-pixel, and the light emitting device layer comprises an anode layer, an emitting layer, a cathode layer and a pixel definition layer; a thin film encapsulation layer located at a side of the light emitting device layer away from the first base substrate; a color filter layer located at a side of a color conversion layer away from the first base substrate, at least comprising a first light shielding pattern, a first color filter pattern and a second color filter pattern, wherein the first light shielding pattern defines a plurality of light transmitting areas, and the light transmitting areas comprise a first light transmitting area corresponding to the first sub-pixel, a second light transmitting area corresponding to the second sub-pixel and a third light transmitting area corresponding to the third sub-pixel; the color conversion layer located between the light emitting device layer and the color filter layer, wherein the color conversion layer comprises a first color conversion pattern located in the first sub-pixel, a second color conversion pattern located in the second sub-pixel and a transmission pattern located in the third sub-pixel; and a filler layer located between the light emitting device layer and the color conversion layer, wherein the filler layer comprises a matrix having a positive refractive index and a plurality of optical patterns having a negative refractive index.

2 . The display panel according to claim 1 , wherein
the thin film encapsulation layer is positioned at a side of the light emitting device layer close to the color conversion layer, and includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer which are sequentially stacked along a direction close to the first base substrate, wherein the first encapsulation layer and the third encapsulation layer are inorganic encapsulation layers and the second encapsulation layer is an organic encapsulation layer, wherein the material of the first encapsulation layer has a positive refractive index; the optical pattern has a side surface in direct contact with the matrix.

3 . The display panel according to claim 2 , wherein the optical pattern has a first surface and a second surface connected with the side surface, the second surface is parallel to a plane where the first base substrate is located and is in direct contact with the matrix.

4 . The display panel according to claim 3 , wherein the first surface is parallel to the plane where the first base substrate is located and is in direct contact with the matrix.

5 . The display panel according to claim 3 , wherein the first surface is parallel to the plane where the first base substrate is located, and the first surface of the optical pattern is located at a side of the optical pattern close to the first base substrate, and the first surface of the optical pattern is in direct contact with a surface at a side of the first encapsulation layer away from the first base substrate.

6 . The display panel according to claim 1 , wherein a plurality of the optical patterns are sequentially arranged along a first direction and extend along a second direction, and the first direction intersects with the second direction.

7 . The display panel according to claim 1 , wherein a plurality of the optical patterns are arranged in an array in the filler layer.

8 . The display panel according to claim 6 , wherein orthographic projection areas of the first light transmitting area, the second light transmitting area, and the third light transmitting area in the filler layer are each provided with at least one optical pattern.

9 . The display panel according to claim 6 , wherein the optical pattern comprises a first optical pattern, a second optical pattern, an orthographic projection of the first optical pattern on the first base substrate is substantially overlapped with an orthographic projection of the first light transmitting area on the first base substrate, and an orthographic projection of the second optical pattern on the first base substrate is substantially overlapped with an orthographic projection of the second light transmitting area on the first base substrate.

10 . The display panel according to claim 9 , wherein the optical pattern further comprises a third optical pattern, an orthographic projection of the third optical pattern on the first base substrate is substantially overlapped with an orthographic projection of the third light transmitting area on the first base substrate.

11 . The display panel according to claim 10 , wherein a color of a sub-pixel of the third light transmitting area is the same as a color of light emitted by a light emitting device of the light emitting device layer.

12 . The display panel according to claim 1 , wherein the first light emitting device, the second light emitting device and the third light emitting device emit the same color.

13 . The display panel according to claim 1 , wherein a thickness of the optical pattern along a direction perpendicular to the first base substrate is less than a maximum thickness of the filler layer along the direction perpendicular to the first base substrate.

14 . The display panel according to claim 3 , wherein the thickness of the optical pattern is calculated by the following formula:

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Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

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

Classifications

• H10K59/122

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

• H10K59/8792

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

• H10K59/35

  comprising red-green-blue [RGB] subpixels · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/879

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