Display panel and display apparatus with light shielding strips to reduce crosstalk between sub-pixels

Patent metadata

Field	Value
Publication number	US-12453274-B2
Application number	US-202117801483-A
Country	US
Kind code	B2
Filing date	Sep 2, 2021
Priority date	Sep 2, 2021
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Provided are a display panel and a display apparatus with light shielding strips to reduce crosstalk between sub-pixels. The display panel includes a pixel definition layer on a first base substrate and including barriers including first barriers and second barriers, the first barriers and the second barriers defining first accommodating portions; light emitting devices arranged in the first accommodating portions in a one-to-one correspondence; a first encapsulation layer covering the pixel definition layer and the plurality of light emitting devices; a color conversion layer on a side of the first encapsulation layer away from the first base substrate, and including a plurality of light emergent portions; and a first light shielding pattern between the first encapsulation layer and the color conversion layer and including first light shielding strips extending in a first direction and second light shielding strips extending in a second direction.

First claim

What is claimed is:

1. A display panel, comprising:
a pixel definition layer on a first base substrate, wherein the pixel definition layer comprises a plurality of barriers, the plurality of barriers comprise a plurality of first barriers extending in a first direction and a plurality of second barriers extending in a second direction, the first direction intersects with the second direction, a plurality of first accommodating portions are defined by the plurality of first barriers and the plurality of second barriers, each of the plurality of first barriers has a first top surface away from the first base substrate, and each of the plurality of the second barriers has a second top surface away from the first base substrate;
a plurality of light emitting devices provided in the plurality of first accommodating portions in one-to-one correspondence, each of the plurality of light emitting devices being configured to emit light of a preset color;
a first encapsulation layer covering the pixel definition layer and the plurality of light emitting devices;
a color conversion layer on a side of the first encapsulation layer away from the first base substrate, wherein the color conversion layer comprises a plurality of light emergent portions, the plurality of light emergent portions are provided in one-to-one correspondence with the plurality of light emitting devices, each of the plurality of light emergent portions is configured to receive light of the preset color and emit light of a same color as the preset color or a different color from the preset color;
a first light shielding pattern between the first encapsulation layer and the color conversion layer, wherein
an orthographic projection of at least a part of each of the plurality of light emitting devices on the first base substrate does not overlap with an orthographic projection of the first light shielding pattern on the first base substrate; the first light shielding pattern comprises a plurality of first light shielding strips extending in the first direction and a plurality of second light shielding strips extending in the second direction, an orthographic projection of the plurality of first light shielding strips on the first base substrate overlaps with an orthographic projection of the plurality of first barriers on the first base substrate, and an orthographic projection of the plurality of second light shielding strips on the first base substrate overlaps with an orthographic projection of the plurality of second barriers on the first base substrate; and
a second barrier between any two adjacent light emitting devices arranged in the first direction corresponds to at least one second light shielding strip, and/or a first barrier between any two adjacent light emitting devices arranged in the second direction correspond to at least one first light shielding strip, a width of the first light shielding strip is greater than or equal to a width of a corresponding first top surface, and a width of the second light shielding strip is greater than or equal to a width of a corresponding second top surface;
wherein each of the plurality of first accommodating portions has a first opening away from the first base substrate, and a width of the first light shielding strip satisfies:
W 1≤ W 1′+ L 1*0.4,

where W 1 is the width of the first light shielding strip, W 1 ′ is a width of the first top surface of the first barrier, and L 1 is a size of the first opening in the second direction; and
a width of the second light shielding strip satisfies:
W 2≤ W 2′+ L 2*0.4,

where W 2 is the width of the second light shielding strip, W 2 ′ is a width of the second top surface of the second barrier, and L 2 is a size of the first opening in the first direction.

2. The display panel of claim 1 , wherein the display panel further comprises a second encapsulation layer covering the first light shielding pattern.

3. The display panel of claim 2 , wherein the first encapsulation layer comprises a plurality of encapsulation sub-layers stacked together, and the second encapsulation layer has a same refractive index as a refractive index of an encapsulation sub-layer of the plurality of encapsulation sub-layers farthest from the first base substrate.

4. The display panel of claim 2 , wherein a material of the second encapsulation layer and of the encapsulation sub-layer furthest from the first base substrate each comprises any one of: silicon oxide, silicon nitride, or silicon oxynitride; and
wherein the second encapsulation layer has a thickness in a range from 0.5 μm to 1 μm.

5. The display panel of claim 1 , wherein the first light shielding pattern has a thickness in a range from 0.5 μm to 1 μm.

6. The display panel of claim 1 , wherein the first light shielding pattern is made of a conductive material, the first light shielding pattern is divided into a plurality of conductive structures, and each of the plurality of conductive structures is also used as a self-capacitance electrode.

7. The display panel of claim 1 , wherein the plurality of light emergent portions of the color conversion layer comprise a plurality of red light emergent portions, a plurality of green light emergent portions and a plurality of blue light emergent portions, a material of the red light emergent portions comprises a red quantum dot material, a material of the green light emergent portions comprises a green quantum dot material, and a material of the blue light emergent portions comprises a scattering particle material.

8. The display panel of claim 1 , further comprising:
a color filter layer on a side of the color conversion layer away from the first substrate, wherein the color filter layer comprises a plurality of color filter portions in one-to-one correspondence with the plurality of light emergent portions, and a color of each of the plurality of color filter portions is the same as a color of light emitted from a corresponding light emergent portion; and
a black matrix on a side of the color conversion layer away from the first base substrate, wherein an orthographic projection of at least a part of each of the plurality of light emergent portions on the first base substrate does not overlap with an orthographic projection of the black matrix on the first base substrate.

9. A display apparatus, comprising the display panel of claim 1 .

10. A display panel, comprising:
a pixel definition layer on a first base substrate, wherein the pixel definition layer comprises a plurality of barriers, the plurality of barriers comprise a plurality of first barriers extending in a first direction and a plurality of second barriers extending in a second direction, the first direction intersects with the second direction, a plurality of first accommodating portions are defined by the plurality of first barriers and the plurality of second barriers, each of the plurality of first barriers has a first top surface away from the first base substrate, and each of the plurality of the second barriers has a second top surface away from the first base substrate;
a plurality of light emitting devices provided in the plurality of first accommodating portions in one-to-one correspondence, each of the plurality of light emitting devices being configured to emit light of a preset color;
a first encapsulation layer covering the pixel definition layer and the plurality of light emitting devices;
a color conversion layer on a side of the first encapsulation layer away from the first base substrate, wherein the color conversion layer comprises a plurality of light emergent portions, the plurality of light emergent portions are provided in one-to-one correspondence with the plurality of light emitting dev

Assignees

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

Inventors

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

Classifications

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/122

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

• H10K2102/351

  Thickness · CPC title

• H10K59/8792 Primary

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