Display panel, manufacturing method thereof, and displaying device

Patent metadata

Field	Value
Publication number	US-11716873-B2
Application number	US-202117356391-A
Country	US
Kind code	B2
Filing date	Jun 23, 2021
Priority date	Nov 19, 2020
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

Disclosed are a display panel, a manufacturing method thereof, and a displaying device. The display panel comprises a pixel layer, a support layer, a lens unit and a cover plate which are stacked in sequence. The support layer is located on a luminescent layer of the pixel layer. The lens unit comprises a lens layer, wherein the lens layer comprises a lens area and a non-lens area, and the lens area comprises multiple lenses arranged in an array. The display panel further comprises a polarization unit disposed on a light path between the pixel layer and the lens layer and configured to filter out light emitted from the pixel layer to the non-lens area.

First claim

The invention claimed is:

1. A display panel, comprising a pixel layer, a support layer, a lens unit and a cover plate which are stacked in sequence, wherein:
the support layer is located on a light-emitting side of the pixel layer;
the lens unit comprises a lens layer, the lens layer comprises a lens area and a non-lens area, and the lens area comprises multiple lenses arranged in an array;
the display panel further comprises a polarization unit disposed on a light path between the pixel layer and the lens layer and configured to filter out light emitted from the pixel layer to the non-lens area;
the polarization unit comprises a first polarization layer and a second polarization layer, wherein the first polarization layer is closer to the pixel layer than the second polarization layer, and a transmission axis of the first polarization layer is perpendicular to a transmission axis of the second polarization layer; and
the first polarization layer is located between the pixel layer and the support layer, and the second polarization layer is located between the support layer and the lens layer.

2. The display panel according to claim 1 , wherein the first polarization layer comprises a first wire grid polarizer, and the second polarization layer comprises a second wire grid polarizer;
wherein, the first wire grid polarizer comprises multiple parallel first protrusions arranged in a first direction;
the second wire grid polarizer comprises multiple parallel second protrusions arranged in a second direction;
an area where the first protrusions are located and an area where the second protrusions are located correspond to the non-lens area, and the first direction is perpendicular to the second direction.

3. The display panel according to claim 2 , wherein the first polarization layer further comprises a first inorganic layer and a first organic layer, and the second polarization layer further comprises a second inorganic layer and a second organic layer;
the first organic layer is disposed on a side, closest to the support layer, of the pixel layer, the multiple first protrusions are disposed on a side, closest to the support layer, of the first inorganic layer, and the first organic layer covers the multiple first protrusions; and
the second inorganic layer is disposed on a side, closest to the support layer, of the lens layer, the multiple second protrusions are disposed on a side, closest to the support layer, of the second organic layer, and the second organic layer is disposed on sides, closest to the support layer, of the multiple second protrusions.

4. The display panel according to claim 2 , wherein the first polarization layer further comprises a third organic layer, and the second polarization layer further comprises a fourth organic layer;
the multiple first protrusions are formed on a side, closest to the pixel layer, of the support layer, and the third organic layer is disposed on sides, closest to the pixel layer, of the multiple first protrusions; and
the multiple second protrusions are formed on a side, closest to the lens layer, of the support layer, and the fourth organic layer covers the multiple second protrusions.

5. The display panel according to claim 1 , wherein the first polarization layer comprises a first polarizer, and the second polarization layer comprises a second polarizer;
wherein, a transmission axis of the first polarizer is perpendicular to a transmission axis of the second polarizer, the first polarizer and the second polarizer each comprise a light-transmitting portion and a polarization portion, areas where the polarization portions are located correspond to the non-lens area, and areas where the light-transmitting portions are located correspond to the lens area.

6. The display panel according to claim 1 , wherein the display panel further comprises a third polarizer located on a side, closest to the support layer, of the pixel layer; and
the polarization unit comprises a third polarization layer, and a transmission axis of the third polarization layer is perpendicular to a transmission axis of the third polarizer.

7. The display panel according to claim 6 , wherein the third polarization layer comprises a third wire grid polarizer, and the third wire grid polarizer comprises multiple parallel third protrusions arranged in a third direction;
wherein, the transmission axis of the third polarizer is perpendicular to the third direction.

8. The display panel according to claim 6 , wherein the third polarization layer is located on a side, closest to the support layer, of the lens layer.

9. The display panel according to claim 1 , wherein the lens unit further comprises a dimming layer, the dimming layer is located on a side, farthest from the support layer, of the lens layer and covers the lens layer, and a refractive index of the lenses is different from a refractive index of the dimming layer.

10. The display panel according to claim 9 , wherein the refractive index of the dimming layer is greater than the refractive index of the lenses.

11. The display panel according to claim 1 , wherein the lenses are micro-lenses.

12. The display panel according to claim 1 , wherein in a direction parallel to the support layer, a cross-section of the lenses is circular, elliptical, square or rectangular.

13. A displaying device, comprising the display panel according to claim 1 .

14. A manufacturing method of the display panel according to claim 1 , comprising:
forming the pixel layer, the support layer, the lens unit and the cover plate which are stacked in sequence; and
forming the polarization unit.

15. A display panel, comprising a pixel layer, a support layer, a lens unit and a cover plate which are stacked in sequence, wherein:
the support layer is located on a light-emitting side of the pixel layer;
the lens unit comprises a lens layer, the lens layer comprises a lens area and a non-lens area, and the lens area comprises multiple lenses arranged in an array;
the display panel further comprises a polarization unit disposed on a light path between the pixel layer and the lens layer and configured to filter out light emitted from the pixel layer to the non-lens area;
the polarization unit comprises a first polarization layer and a second polarization layer, wherein the first polarization layer is closer to the pixel layer than the second polarization layer, and a transmission axis of the first polarization layer is perpendicular to a transmission axis of the second polarization layer; and
the first polarization layer and the second polarization layer are both located between the support layer and the lens layer.

16. The display panel according to claim 15 , wherein the first polarization layer comprises a first wire grid polarizer, and the second polarization layer comprises a second wire grid polarizer; wherein, the first wire grid polarizer comprises multiple parallel first protrusions arranged in a first direction; the second wire grid polarizer comprises multiple parallel second protrusions arranged in a second direction; an area where the multiple parallel first protrusions are located and an area where the multiple parallel second protrusions are located correspond to the non-lens area, and the first direction is perpendicular to the second direction.

17. The display panel according to claim 16 , wherein the first polarization layer further comprises a third inorganic layer, and the second polarization layer further comprises a fifth organic layer; the multiple parallel first protrusions are formed on a side, closest to t

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Duohui
• Guo Kang
• Song Mengya
• Liu Zhen
• Zhang Xiao
• Gu Xin

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/879

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

• H10K50/858 Primary

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

• G02F1/133526 Primary

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• H10K50/868

  Arrangements for polarized light emission (H10K50/86 takes precedence) · CPC title