Display panel and method for manufacturing the same, display device

Patent metadata

Field	Value
Publication number	US-12015022-B2
Application number	US-202117358235-A
Country	US
Kind code	B2
Filing date	Jun 25, 2021
Priority date	Jun 29, 2020
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

The present disclosure provides a display panel, a method for manufacturing a display panel and a display device. The display panel includes a substrate, and a light emitting element array and a quantum dot color filter array arranged on the substrate, the quantum dot color filter array is arranged on a light exiting side of the light emitting element array, and quantum dot color filters in the quantum dot color filter array correspond to light emitting elements in the light emitting element array one to one, and the display panel further includes a blocking structure arranged between the light emitting element array and the quantum dot color filter array so as to block heat dissipated by the light emitting elements from being conducted to the quantum dot color filters.

First claim

The invention claimed is:

1. A display panel, comprising a substrate, and a light emitting element array and a quantum dot color filter array on the substrate, the quantum dot color filter array is arranged on a light exiting side of the light emitting element array, and quantum dot color filters in the quantum dot color filter array correspond to light emitting elements in the light emitting element array one to one,
the display panel further comprises a blocking structure arranged between the light emitting element array and the quantum dot color filter array so as to prevent heat dissipated by the light emitting elements from being conducted to the quantum dot color filters,
wherein the blocking structure comprises a first planarization layer and a second planarization layer, the first planarization layer and the second planarization layer are sequentially stacked on the substrate along a light exiting direction of the light emitting element array, and the second planarization layer is located on a side of the light emitting element array away from the substrate,
the light emitting element array is embedded in the first planarization layer, and a surface of the first planarization layer away from the substrate is flushed with a surface at the light exiting side of the light emitting element array away from the substrate.

2. The display panel according to claim 1 , wherein a heat conductivity of the first planarization layer is higher than a heat conductivity of the second planarization layer; or, the heat conductivity of the first planarization layer is equal to the heat conductivity of the second planarization layer.

3. The display panel according to claim 1 , wherein the blocking structure further comprises a micro-lens array embedded in the second planarization layer, and a farthest end of the micro-lens array from the light exiting side of the light emitting element array is flush with a surface of the second planarization layer away from the light exiting side of the light emitting element array;
micro-lenses in the micro-lens array correspond to the light emitting elements in the light emitting element array one to one.

4. The display panel according to claim 1 , wherein the first planarization layer is made of a transparent epoxy resin material or a heat-conducting silica gel material, and the second planarization layer is made of a transparent polypropylene block polymer material;
a heat conductivity of the epoxy resin material ranges from 0.2 W/(m·K) to 2.2 W/(m·K); a heat conductivity of the heat-conducting silica gel material ranges from 0.8 W/(m·K) to 3.0 W/(m·K); and a heat conductivity of the polypropylene block polymer material ranges from 0.14 W/(m·K) to 0.25 W/(m·K).

5. The display panel according to claim 1 , wherein each of the first planarization layer and the second planarization layer is made of a transparent polypropylene block polymer material;
a heat conductivity of the polypropylene block polymer material ranges from 0.14 W/(m·K) to 0.25 W/(m·K).

6. The display panel according to claim 3 , wherein each of the micro-lenses comprises a first part and a second part, and the second part covers a side of the first part away from the light exiting side of the light emitting element array;
the second part has a refractive index greater than that of the first part; and the first part has a refractive index greater than 1.

7. The display panel according to claim 6 , wherein the first part has a refractive index ranging from 1.4 to 1.6.

8. The display panel according to claim 7 , wherein the second part has a refractive index ranging from 1.7 to 2.1.

9. The display panel according to claim 3 , further comprising:
a light blocking layer arranged on the second planarization layer and in an interval area between adjacent ones of the quantum dot color filters, and a surface of the light blocking layer away from the light exiting side of the light emitting element array is flush with surfaces of the quantum dot color filters away from the light exiting side of the light emitting element array.

10. The display panel according to claim 3 , further comprising: a light blocking layer arranged on the first planarization layer and in an interval region between adjacent ones of the quantum dot color filters, and a surface of the light blocking layer away from the light exiting side of the light emitting element array is flush with surfaces of the quantum dot color filters away from the light exiting side of the light emitting element array.

11. The display panel according to claim 9 , further comprising: a protective layer arranged on a side of the quantum dot color filter array away from the light exiting side of light emitting element array, and the protective layer covers the quantum dot color filter array and the light blocking layer.

12. The display panel according to claim 10 , further comprising: a protective layer arranged on a side of the quantum dot color filter array away from the light exiting side of light emitting element array, and the protective layer covers the quantum dot color filter array and the light blocking layer.

13. The display panel according to claim 11 , further comprising: a color filter layer array and an encapsulation layer, the color filter layer array is arranged on a side of the protective layer away from the light exiting side of the light emitting element array, and color filter layers in the color filter layer array correspond to the light emitting elements in the light emitting element array one to one;
the encapsulation layer is arranged on a side, away from the light exiting side of the light emitting element array, of the color filter layer array, and covers the color filter layer array.

14. The display panel according to claim 12 , further comprising: a color filter layer array and an encapsulation layer, the color filter layer array is arranged on a side of the protective layer away from the light exiting side of the light emitting element array, and color filter layers in the color filter layer array correspond to the light emitting elements in the light emitting element array one to one;
the encapsulation layer is arranged on a side, away from the light exiting side of the light emitting element array, of the color filter layer array, and covers the color filter layer array.

15. A display device, comprising the display panel of claim 1 .

16. A display panel, comprising a substrate, and a light emitting element array and a quantum dot color filter array on the substrate, the quantum dot color filter array is arranged on a light exiting side of the light emitting element array, and quantum dot color filters in the quantum dot color filter array correspond to light emitting elements in the light emitting element array one to one,
the display panel further comprises a blocking structure arranged between the light emitting element array and the quantum dot color filter array so as to prevent heat dissipated by the light emitting elements from being conducted to the quantum dot color filters,
wherein the blocking structure comprises a first planarization layer and a second planarization layer, the first planarization layer and the second planarization layer are sequentially stacked on the substrate along a light exiting direction of the light emitting element array, the second planarization layer is located on a side of the light emitting element array away from the substrate, and the light emitting element array is embedded in the first planarization layer,
the blocking structure further comprises a micro-lens array embedded in the second planariz

Assignees

• Boe Technology Group Co Ltd

Inventors

• Tian Yu
• Jin Qian
• Sun Qian
• Huang Wei

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H20/0363

  of optical field-shaping means · CPC title

• H10H20/0362

  of encapsulations · CPC title