CN113346033A - Display panel, display device and manufacturing method of display panel - Google Patents

Abstract

The invention discloses a display panel, a display device and a manufacturing method of the display panel, which are used for solving the problems that in the prior art, a rigid organic light-emitting display product has chromatic dispersion and has rainbow patterns at an oblique viewing angle. The display panel includes: the light-emitting device comprises a substrate base plate, a packaging cover plate and a light-emitting device, wherein the substrate base plate and the packaging cover plate are arranged oppositely, and the light-emitting device is sealed between the substrate base plate and the packaging cover plate; the light-emitting device comprises a light-emitting layer and a reflecting electrode layer positioned on one side of the light-emitting layer facing the packaging cover plate, a gap filled with first gas is formed between the reflecting electrode layer and the packaging cover plate, and the difference between the refractive index of the first gas and the refractive index of the packaging cover plate is larger than a first value; the display panel further includes: the functional layer is arranged on the light propagation path and is patterned, wherein the light propagation path is a path through which external environment light is incident to the reflective electrode layer through the packaging cover plate.

Description

Display panel, display device and manufacturing method of display panel

Technical Field

The invention relates to the technical field of semiconductors, in particular to a display panel, a display device and a manufacturing method of the display panel.

Background

Flat panel displays (F1at panel 1 Disp1ay, FPD) have become the mainstream products in the market, and the types of flat panel displays are increasing, such as Liquid crystal displays (Liquid crystal displays 1 Disp1ay, LCD), Organic Light Emitting Diode (OLED) displays, plasma Display panels (P1asma Disp1ay panel 1, PDP), and Field Emission Displays (FED).

However, the rigid organic light emitting display products in the prior art have the problems of chromatic dispersion and rainbow patterns generated at oblique viewing angles.

Disclosure of Invention

The invention provides a display panel, a display device and a manufacturing method of the display panel, which are used for solving the problems that in the prior art, a rigid organic light-emitting display product has chromatic dispersion and has rainbow patterns at an oblique viewing angle.

An embodiment of the present invention provides a display panel, including: the light-emitting device comprises a substrate base plate, a packaging cover plate and a light-emitting device, wherein the substrate base plate and the packaging cover plate are arranged oppositely, and the light-emitting device is sealed between the substrate base plate and the packaging cover plate; the light-emitting device comprises a light-emitting layer and a reflecting electrode layer positioned on one side of the light-emitting layer facing the packaging cover plate, a gap filled with first gas is formed between the reflecting electrode layer and the packaging cover plate, and the difference between the refractive index of the first gas and the refractive index of the packaging cover plate is larger than a first value;

the display panel further includes: the functional layer is arranged on the light propagation path and is patterned, wherein the light propagation path is a path through which external environment light is incident to the reflective electrode layer through the packaging cover plate.

In one possible embodiment, the functional layer is located on a side of the reflective electrode layer facing the package cover plate; or the functional layer is positioned on one side of the packaging cover plate, which is far away from the reflecting electrode layer; or the functional layer is positioned on one side of the packaging cover plate facing the reflecting electrode layer.

In one possible embodiment, the functional layer includes a pattern portion and a hollowed-out portion penetrating through the functional layer, wherein a ratio of a total area of the hollowed-out portions to an area of the functional layer is 45% to 55%.

In one possible embodiment, the thickness d of the functional layer satisfies the following relationship:

(n1-n2) × 2(d/sin45 °) ═ 550 × (1/2), where n1 denotes the refractive index of the functional layer and n2 denotes the refractive index of the first gas.

In a possible implementation manner, the pattern portion includes a plurality of rectangular first pattern strips extending along a first direction and sequentially arranged along a second direction, the hollow portion includes rectangular first hollow strips extending along the first direction and sequentially arranged along the second direction, and the first pattern strips and the first hollow strips are alternately arranged along the second direction;

or the pattern part comprises a plurality of wave-shaped second pattern strips extending along the first direction and sequentially arranged along the second direction, the hollow-out part comprises wave-shaped second hollow-out strips extending along the first direction and sequentially arranged along the second direction, and the second pattern strips and the second hollow-out strips are alternately arranged along the second direction;

or the pattern part comprises a plurality of first pattern groups which extend along the first direction and are sequentially arranged along the second direction, and each first pattern group comprises a plurality of first pattern blocks which are arranged at intervals along the first direction; the hollowed-out part comprises first hollowed-out blocks positioned between the adjacent first pattern blocks in the first pattern group, and the first pattern blocks adjacent to the first pattern group are distributed in a staggered manner;

or, the pattern part includes a second pattern group and a third pattern group extending along the second direction, the second pattern group and the third pattern group being alternately arranged along the first direction; the second pattern group comprises a plurality of second pattern blocks which are spaced from each other; the third pattern group comprises a plurality of pattern units which are sequentially connected along the second direction, each pattern unit comprises two U-shaped openings which are arranged along the first direction, the openings of the two U-shaped openings in the same pattern unit face the same direction, and one side of one U-shaped opening is intersected with one side of the other U-shaped opening to form an acute angle; a first symmetry axis of the second pattern block parallel to the first direction is positioned between two adjacent pattern units; the hollow-out part is positioned in the area outside the pattern part and is complementary with the shape of the pattern part.

In a possible embodiment, the functional layer includes a substrate and a plurality of protrusion combinations distributed in an array on one side of the substrate, where the protrusion combinations include a first sub-protrusion and a second sub-protrusion surrounding the first sub-protrusion; the bulges of adjacent rows are combined and distributed in a staggered way.

In a possible embodiment, the outer contour of the first sub-projection is similar in shape to the outer contour of the second sub-projection.

The embodiment of the invention also provides a display device which comprises the display panel provided by the embodiment of the invention.

The embodiment of the present invention further provides a manufacturing method of the display panel provided by the embodiment of the present invention, where the manufacturing method includes:

forming a light emitting layer and a reflective electrode layer in sequence on one side of the substrate;

the manufacturing method comprises the steps of forming a functional layer which is located on a light propagation path and has a patterned structure, sealing the substrate and the packaging cover plate, and forming a gap with first gas between the reflection electrode layer and the packaging cover plate, wherein the difference between the refractive index of the first gas and the refractive index of the packaging cover plate is larger than a first value, and the light propagation path is a path through which external ambient light enters the reflection electrode layer through the packaging cover plate.

In one possible embodiment, the forming a functional layer having a patterned structure on a light propagation path and sealing the substrate base plate and the package cover plate includes:

forming a functional film on one side of the reflecting electrode layer, which is far away from the luminescent layer;

and exposing the functional film through a half-tone mask plate to form a functional layer comprising a base body and a plurality of bulge combinations positioned on one side of the base body.

The embodiment of the invention has the following beneficial effects: in the embodiment of the invention, the display panel further comprises a patterned functional layer which is arranged on the light propagation path, and the patterned functional layer can destroy the reflected light of the reflecting electrode layer, refract the reflected light out of the packaging cover plate through the first gas and then generate equal inclination interference, so that the defect of rainbow texture is improved.

Drawings

FIG. 1 is a schematic diagram of the generation of bright and dark stripes;

FIG. 2 is a schematic diagram of the generation of rainbow patterns;

FIG. 3 is a schematic diagram of a display panel according to an embodiment of the present invention;

FIG. 4 is a second schematic view of a display panel according to an embodiment of the present invention;

FIG. 5 is a third schematic view of a display panel according to an embodiment of the present invention;

FIG. 6 is a fourth schematic view of a display panel according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a functional layer pattern according to an embodiment of the present invention;

FIG. 8 is a second schematic diagram of a functional layer pattern according to an embodiment of the present invention;

FIG. 9 is a third schematic diagram of a functional layer pattern according to an embodiment of the present invention;

FIG. 10 is a fourth schematic diagram illustrating a functional layer pattern according to an embodiment of the present invention;

FIG. 11 is an enlarged partial schematic view of FIG. 6;

fig. 12 is a schematic view illustrating a manufacturing process of a display panel according to an embodiment of the present invention;

fig. 13 is a schematic simulation diagram according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

The inventors of the present invention found that a gap (gap) filled with a first gas (e.g., nitrogen N2) between a rigid encapsulating cover plate (the material of the encapsulating cover plate may be, for example, Glass) and an OLED film layer has a large difference in refractive index between N2 and Glass, which results in significant isocline interference of reflected light at the interface of the two layers; under the condition of monochromatic light, bright stripes can appear when the optical path difference OPD1 is even times of the half wavelength of the incident light, and dark stripes can appear when the optical path difference OPD2 is odd times of the half wavelength of the incident light, as shown in figure 1, so that the phenomenon that the intensity of the reflected light changes alternately appears; under the condition of polychromatic light, the refractive indexes of light with different wavelengths in the same medium are different, and the distribution positions of light intensity after interference are different, so that dispersion is caused, that is, rainbow fringes appear, as shown in fig. 2.

In view of the above, referring to fig. 3, 4, 5 and 6, an embodiment of the invention provides a display panel, including: the light-emitting device comprises a substrate base plate 2 and a packaging cover plate 2 which are oppositely arranged, and a light-emitting device 3 sealed between the substrate base plate 1 and the packaging cover plate 2; the light-emitting device 3 comprises a light-emitting layer 31 and a reflective electrode layer 32 positioned on one side of the light-emitting layer 31 facing the package cover plate 2, a gap S filled with a first gas is formed between the reflective electrode layer 32 and the package cover plate 2, and the difference between the refractive index of the first gas and the refractive index of the package cover plate 2 is greater than a first value; specifically, the first gas may be, for example, nitrogen N2, and the refractive index is 1.00027, the material of the package cover plate 2 may be glass, and the refractive index is 1.5, and the first value may be specifically 0.4 to 0.6, and specifically the first value may be 0.5;

the display panel further includes: and the patterned functional layer 4 is disposed on a light propagation path, wherein the light propagation path is a path through which external ambient light enters the reflective electrode layer 32 through the package cover plate 2.

In the embodiment of the present invention, the display panel further includes a patterned functional layer 4 disposed on the light propagation path, and the patterned functional layer 4 can destroy the reflected light of the reflective electrode layer 32, refract the reflected light out of the package cover plate 2 through the first gas, and then generate equal-inclination interference, so as to improve the rainbow texture defect.

Specifically, the substrate 1 and the package cover plate 2 can be sealed by the frame sealing glue 5; the reflective electrode layer 32 may be a reflective cathode, and the display panel may further include an anode between the substrate base plate 1 and the light emitting layer 31.

Specifically, the display panel in the embodiment of the present invention may be a rigid organic light emitting display panel.

In a possible embodiment, referring to fig. 3, the functional layer 4 is located on a side of the reflective electrode layer 32 facing the package cover plate 2, so that the thickness of the pattern portion 41 in a direction perpendicular to the substrate 1 can be adjusted, when light passes through a boundary between the functional layer 4 and the first gas, the optical path difference is an odd multiple of a half wavelength, interference cancellation is achieved, and the problem of poor rainbow fringes is solved, as shown in fig. 13, which is a simulation result thereof, it can be seen that, after the reflective electrode layer 32 is reduced by setting the functional layer 4, the interference fringes are greatly reduced; or, as shown in fig. 4, the functional layer 4 is located on a side of the package cover plate 2 away from the reflective electrode layer 32, so that the reflectivity of the package cover plate 2 is reduced by using the interference principle, and further the equal inclination interference is eliminated; alternatively, as shown in fig. 5, the functional layer 4 is located on the side of the package cover 2 facing the reflective electrode layer 32, so as to reduce the reflectivity of the package cover 2 by utilizing the interference principle, thereby eliminating the equal inclination interference.

In one possible embodiment, as shown in fig. 3, 4 and 5, the functional layer 4 includes a pattern portion 41 and a 4-hollowed portion 42 penetrating through the functional layer, wherein a ratio of a total area of the hollowed portion 42 to an area of the functional layer 4 is 45% to 55%, that is, an area of the patterned functional layer 4 is 45% to 55% of an area of the reflective electrode layer 32. Specifically, the ratio of the total area of the hollowed portions 42 to the area of the functional layer 4 is 50%. In the embodiment of the present invention, the functional layer 4 includes the pattern portion 41 and the 4 hollow portion 42 penetrating through the functional layer, and the specific functional layer 4 may be made of an inorganic material (e.g., SiNx or SiO2), a functional thin film is formed first by a chemical vapor deposition method, and then the patterned (pattern) functional layer 4 is prepared by a mask exposure method, so that the thickness of the pattern portion 41 in a direction perpendicular to the substrate 1 may be adjusted, and when light passes through a boundary between the functional layer 4 and the first gas, the optical path difference is an odd multiple of a half wavelength, thereby achieving destructive interference and improving the problem of poor rainbow texture. In addition, the ratio of the total area of the hollow-out portion 42 to the area of the functional layer 4 is 45% to 55%, for example, 50%, so that the total amount of the two light beams generating the optical path difference is the same, interference cancellation is realized to the maximum extent, the reflectivity is reduced, and equal inclination interference is eliminated.

In one possible embodiment, the thickness d of the functional layer 4 satisfies the following relation: (n1-n2) × 2(d/sin45 °) ═ 550 × (1/2), where n1 denotes the refractive index of the functional layer and n2 denotes the refractive index of the first gas. Thus, when light passes through the boundary between the functional layer 4 and the first gas, complete interference cancellation is achieved in order to make the optical path difference one-half wavelength.

Specifically, for example, the patternized functional layer 4 may be made of SiNx material and a mask exposure method, and at a wavelength of 550nm, which is most sensitive to the human eye, the SiNx has a refractive index n1 of 1.903 and a refractive index n2 of 1.00027, so that when light passes through the boundary between the SiNx and the SiNx, the SiNx thickness d needs to satisfy (n1-n2) × 2(d/sin45 °) 550 × 1/2, which is calculated to be 97.5nm, about 100nm, i.e., 0.1um, so that the optical path difference is one half wavelength (complete interference cancellation).

For another example, in the case of preparing a patternized functional layer by using SiO2 material and a mask exposure method, at a wavelength of 550nm, which is most sensitive to human eyes, the refractive index n1 of SiO2 is 1.48, and the refractive index n2 of nitrogen is 1.00027, so that when light passes through the interface between the two, the SiNx thickness d needs to satisfy (n1-n2) × 2(d/sin45 °) 550 × 1/2, and thus 202.5nm, about 200nm, that is, 0.2um is calculated.

In a possible embodiment, referring to fig. 7, the pattern portion 41 includes a plurality of rectangular first pattern bars 411 extending along a first direction a1 and sequentially arranged along a second direction a2, the hollow portion 42 includes rectangular first hollow bars 421 extending along the first direction a1 and sequentially arranged along the second direction a2, and the first pattern bars 411 and the first hollow bars 421 are alternately arranged along the second direction a 2;

alternatively, referring to fig. 8, the pattern portion 41 includes a plurality of wave-shaped second pattern strips 412 extending along the first direction a1 and sequentially arranged along the second direction a2, the hollow portions 42 include wave-shaped second hollow strips 422 extending along the first direction a1 and sequentially arranged along the second direction a2, and the second pattern strips 412 and the second hollow strips 422 are alternately arranged along the second direction a 2;

alternatively, referring to fig. 9, the pattern part 41 includes a plurality of first pattern groups 413 extending in the first direction a1 and arranged in sequence in the second direction a2, and each first pattern group 413 includes a plurality of first pattern blocks 4131 arranged at intervals in the first direction a 1; the hollow part 42 includes first hollow blocks 423 located between adjacent first pattern blocks B1 in the first pattern group 413, and the first pattern blocks B1 of the adjacent first pattern group 413 are distributed in a staggered manner;

alternatively, referring to fig. 10, the pattern part 41 includes second pattern groups 414 and third pattern groups 415 extending in the second direction a2, the second pattern groups 414 and the third pattern groups 415 being alternately arranged in the first direction a 1; the second pattern group 414 includes a plurality of second pattern blocks 4141 spaced apart from each other, and the general pattern of the second pattern blocks 4141 may be an elliptical lantern shape; the third pattern group comprises a plurality of pattern units 4150 which are sequentially connected in the second direction a2 along 415, each pattern unit 4150 comprises two U-shaped openings 4151 arranged along the first direction a1, in the same pattern unit 4150, the openings of the two U-shaped openings 4151 face the same direction, for example, the bayonets face the right side, and one side of one U-shaped opening 4151 intersects with one side of the other U-shaped opening 4151 to form an acute angle α; the second pattern block 4141 is located between two adjacent pattern units 4150 in parallel to the first axis of symmetry EF of the first direction a 1; the hollow portion 42 is located in a region other than the pattern portion 41, and is complementary to the shape of the pattern portion 41.

In one possible embodiment, referring to fig. 6 and 11, where fig. 11 is an enlarged schematic view of the protrusion combination 43 in fig. 6, the functional layer 4 includes a substrate 43 and a plurality of protrusion combinations 44 arranged in an array on one side of the substrate 43, and each protrusion combination 44 includes a first sub-protrusion 441 and a second sub-protrusion 442 surrounding the first sub-protrusion 441; the sets of projections 44 of adjacent rows are offset. In the embodiment of the present invention, after the CTD is prepared, an uneven (encapsulating) structure may be exposed through a half-tone mask (half tone mask) by using an organic material (for example, acryl or polyimide), and then a subsequent packaging process is performed, so that the original light path of the equal-inclination interference is destroyed by passing through the encapsulating scattering layer before and after the ambient light is reflected on the surface of the reflective electrode layer 32, that is, the equal-inclination interference is suppressed, and the problem of rainbow texture is solved.

It can be understood that, compared to inorganic materials, organic materials can be formed to have a larger thickness through a coating process, and then a concave-convex (embossing) structure can be formed through a half-tone mask process; since the inorganic material is usually formed by a chemical vapor deposition method, the thickness of the formed film is limited, and therefore, the hollow-out penetrating through the functional layer 4 can be formed by exposure through a mask.

In one possible embodiment, as shown in connection with FIG. 11, the outer contour of first sub-projection 441 is similar in shape to the outer contour of second sub-projection 442. Specifically, for example, the outer contours of the first sub-projection 441 and the second sub-projection 442 are both hexagonal.

Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the display panel provided by the embodiment of the invention.

Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method of the display panel provided in the embodiment of the present invention, as shown in fig. 12, the manufacturing method includes:

step S100, forming a light emitting layer and a reflecting electrode layer on one side of a substrate in sequence;

step S200, forming a functional layer having a patterned structure and located on the light propagation path, and sealing the substrate and the package cover plate, and forming a gap having a first gas between the reflective electrode layer and the package cover plate, where a difference between a refractive index of the first gas and a refractive index of the package cover plate is greater than a first value, and the light propagation path is a path through which external ambient light enters the reflective electrode layer via the package cover plate.

In one possible embodiment, regarding step S200, forming a functional layer on the light propagation path and having a patterned structure, and sealing the substrate base plate and the package cover plate, may include:

forming a functional film on one side of the reflecting electrode layer, which is far away from the luminescent layer;

and exposing the functional film through a half-tone mask plate to form a functional layer comprising a base body and a plurality of bulge combinations positioned on one side of the base body.

The embodiment of the invention has the following beneficial effects: in the embodiment of the present invention, the display panel further includes a patterned functional layer 4 disposed on the light propagation path, and the patterned functional layer 4 can destroy the reflected light of the reflective electrode layer 32, refract the reflected light out of the package cover plate 2 through the first gas, and then generate equal-inclination interference, so as to improve the rainbow texture defect.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A display panel, comprising: the light-emitting device comprises a substrate base plate, a packaging cover plate and a light-emitting device, wherein the substrate base plate and the packaging cover plate are arranged oppositely, and the light-emitting device is sealed between the substrate base plate and the packaging cover plate; the light-emitting device comprises a light-emitting layer and a reflecting electrode layer positioned on one side of the light-emitting layer facing the packaging cover plate, a gap filled with first gas is formed between the reflecting electrode layer and the packaging cover plate, and the difference between the refractive index of the first gas and the refractive index of the packaging cover plate is larger than a first value;

the display panel further includes: the functional layer is arranged on the light propagation path and is patterned, wherein the light propagation path is a path through which external environment light is incident to the reflective electrode layer through the packaging cover plate.

2. The display panel of claim 1, wherein the functional layer is located on a side of the reflective electrode layer facing the package cover plate; or the functional layer is positioned on one side of the packaging cover plate, which is far away from the reflecting electrode layer; or the functional layer is positioned on one side of the packaging cover plate facing the reflecting electrode layer.

3. The display panel according to claim 2, wherein the functional layer includes a pattern portion, and a hollowed-out portion penetrating the functional layer, wherein a ratio of a total area of the hollowed-out portions to an area of the functional layer is 45% to 55%.

4. The display panel according to claim 3, wherein the thickness d of the functional layer satisfies the following relation:

(n1-n2) × 2(d/sin45 °) ═ 550 × (1/2), where n1 denotes the refractive index of the functional layer and n2 denotes the refractive index of the first gas.

5. The display panel according to claim 3, wherein the pattern portion comprises a plurality of rectangular first pattern strips extending along a first direction and arranged in sequence along a second direction, the hollow portion comprises rectangular first hollow strips extending along the first direction and arranged in sequence along the second direction, and the first pattern strips and the first hollow strips are arranged alternately along the second direction;

or the pattern part comprises a plurality of wave-shaped second pattern strips extending along the first direction and sequentially arranged along the second direction, the hollow-out part comprises wave-shaped second hollow-out strips extending along the first direction and sequentially arranged along the second direction, and the second pattern strips and the second hollow-out strips are alternately arranged along the second direction;

or the pattern part comprises a plurality of first pattern groups which extend along the first direction and are sequentially arranged along the second direction, and each first pattern group comprises a plurality of first pattern blocks which are arranged at intervals along the first direction; the hollowed-out part comprises first hollowed-out blocks positioned between the adjacent first pattern blocks in the first pattern group, and the first pattern blocks adjacent to the first pattern group are distributed in a staggered manner;

or, the pattern part includes a second pattern group and a third pattern group extending along the second direction, the second pattern group and the third pattern group being alternately arranged along the first direction; the second pattern group comprises a plurality of second pattern blocks which are spaced from each other; the third pattern group comprises a plurality of pattern units which are sequentially connected along the second direction, each pattern unit comprises two U-shaped openings which are arranged along the first direction, the openings of the two U-shaped openings in the same pattern unit face the same direction, and one side of one U-shaped opening is intersected with one side of the other U-shaped opening to form an acute angle; a first symmetry axis of the second pattern block parallel to the first direction is positioned between two adjacent pattern units; the hollow-out part is positioned in the area outside the pattern part and is complementary with the shape of the pattern part.

6. The display panel of claim 2, wherein the functional layer comprises a substrate and a plurality of protrusion combinations distributed in an array on one side of the substrate, and the protrusion combinations comprise a first sub-protrusion and a second sub-protrusion surrounding the first sub-protrusion; the bulges of adjacent rows are combined and distributed in a staggered way.

7. The display panel of claim 6, wherein an outer contour of the first sub-protrusion is similar in shape to an outer contour of the second sub-protrusion.

8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.

9. A method of manufacturing a display panel according to any one of claims 1 to 7, the method comprising:

forming a light emitting layer and a reflective electrode layer in sequence on one side of the substrate;

the manufacturing method comprises the steps of forming a functional layer which is located on a light propagation path and has a patterned structure, sealing the substrate and the packaging cover plate, and forming a gap with first gas between the reflection electrode layer and the packaging cover plate, wherein the difference between the refractive index of the first gas and the refractive index of the packaging cover plate is larger than a first value, and the light propagation path is a path through which external ambient light enters the reflection electrode layer through the packaging cover plate.

10. The method of claim 9, wherein the forming a functional layer having a patterned structure in a light propagation path and sealing the substrate base plate to the package cover plate comprises:

forming a functional film on one side of the reflecting electrode layer, which is far away from the luminescent layer;

and exposing the functional film through a half-tone mask plate to form a functional layer comprising a base body and a plurality of bulge combinations positioned on one side of the base body.

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