CN109309169A - A kind of organic light emitting display panel and preparation method thereof - Google Patents
A kind of organic light emitting display panel and preparation method thereof Download PDFInfo
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- CN109309169A CN109309169A CN201710617054.6A CN201710617054A CN109309169A CN 109309169 A CN109309169 A CN 109309169A CN 201710617054 A CN201710617054 A CN 201710617054A CN 109309169 A CN109309169 A CN 109309169A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The present invention provides a kind of organic light emitting display panel and preparation method thereof, organic light emitting display panel includes: substrate；Organic Light Emitting Diode, the Organic Light Emitting Diode include the first electrode, light emitting functional layer and second electrode being sequentially located on the substrate, and the light emitting functional layer includes luminous material layer and auxiliary light emission layer；The light emission side of pleated structure, the pleated structure towards the organic light emitting display panel has concaveconvex structure；The pleated structure is between the substrate and the Organic Light Emitting Diode, so that the light-emitting surface of the first electrode, the light emitting functional layer and the second electrode is male and fomale(M&F)；Alternatively, the organic light emitting display panel further includes thin-film encapsulation layer, the pleated structure is between the thin-film encapsulation layer and the Organic Light Emitting Diode, so that the light-emitting surface of the thin-film encapsulation layer is male and fomale(M&F).Present invention improves the big visual angle color offset phenomenons of organic light emitting display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to an organic light-emitting display panel and a manufacturing method thereof.
Background
In the prior art, each film layer in the organic light emitting display panel is of a planar structure, and the film layer of the organic light emitting display surface may be, for example, a cathode, an anode, an organic light emitting layer, a thin film encapsulation layer, and the like of an organic light emitting diode.
Generally, a pixel includes three red, green and blue sub-pixels, and the three red, green and blue sub-pixels respectively emit red, green and blue light, so as to implement color display, but due to different light emission wavelengths (different light emission colors correspond to different light emission wavelengths), angles at which total reflection occurs may be different, so that the brightness of the red, green and blue colors may be attenuated inconsistently along with the change of viewing angle, thereby causing color cast at a large viewing angle.
Disclosure of Invention
The embodiment of the invention provides an organic light-emitting display panel and a manufacturing method thereof, which aim to improve the large-viewing-angle color cast phenomenon of the organic light-emitting display panel.
An embodiment of the present invention provides an organic light emitting display panel, including:
a substrate;
the organic light-emitting diode comprises a first electrode, a light-emitting functional layer and a second electrode which are sequentially arranged on the substrate, wherein the light-emitting functional layer comprises a light-emitting material layer and an auxiliary light-emitting layer;
the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
the fold structure is positioned between the substrate and the organic light-emitting diode, so that the light-emitting surfaces of the first electrode, the light-emitting functional layer and the second electrode are concave-convex surfaces; or,
the organic light-emitting display panel further comprises a film packaging layer, and the fold structure is located between the film packaging layer and the organic light-emitting diode, so that the light-emitting surface of the film packaging layer is a concave-convex surface.
Optionally, the auxiliary light emitting layer includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.
Optionally, the shape of the concave-convex structure is one or more of a prism shape, a frustum shape, a convex rhombus shape, a cone shape or a convex arc shape.
Optionally, the relief structure comprises a plurality of hemispherical protrusions.
Optionally, the height of the protrusions in the concave-convex structure is 30nm-90 nm; the distance between two adjacent bulges in the concave-convex structure is 200nm-500 nm.
Optionally, the material of the corrugated structure is plexiglass.
The embodiment of the invention also provides a manufacturing method of the organic light-emitting display panel, which comprises the following steps:
providing a substrate;
forming an organic light emitting diode on the substrate; the organic light emitting diode comprises a first electrode, a light emitting function layer and a second electrode which are sequentially arranged on the substrate, wherein the light emitting function layer comprises a light emitting material layer and an auxiliary light emitting layer;
forming a corrugated structure; the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
and forming a film packaging layer on the fold structure, wherein the light-emitting surface of the film packaging layer is a concave-convex surface.
Optionally, the forming a corrugated structure comprises:
spin coating organic glass solution;
curing the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching method to form the corrugated structure.
The embodiment of the invention also provides another manufacturing method of the organic light-emitting display panel, which comprises the following steps:
providing a substrate;
forming a corrugated structure; the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
forming an organic light emitting diode on the corrugated structure; the organic light emitting diode comprises a first electrode, a light emitting function layer and a second electrode which are sequentially arranged on the substrate, wherein the light emitting function layer comprises a light emitting material layer and an auxiliary light emitting layer; the light emitting surfaces of the first electrode, the light emitting functional layer and the second electrode are concave-convex surfaces.
Optionally, the forming a corrugated structure comprises:
spin coating organic glass solution;
curing the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching or wet etching method to form the corrugated structure.
The organic light-emitting display panel provided by the embodiment of the invention comprises a substrate, an organic light-emitting diode and a fold structure, wherein the fold structure and the organic light-emitting diode are positioned at the same side of the substrate, the fold structure is provided with a concave-convex structure towards the light-emitting side of the organic light-emitting display panel, and when the fold structure is positioned between the substrate and the organic light-emitting diode, the fold structure enables a first electrode, a light-emitting function layer and a second electrode in the light-emitting diode to form a concave-convex surface, so that when light rays emitted by the light-emitting function layer pass through the concave-convex surface, the total; the organic light-emitting display panel can further comprise a film packaging layer, the fold structure is located between the film packaging layer and the organic light-emitting diode, the fold structure enables the film packaging layer to form a concave-convex surface, light emitted by the light-emitting diode passes through the concave-convex film packaging layer, and the total reflection phenomenon is reduced for passing through a plane, so that the phenomenon that different light-emitting colors caused by total reflection of the plane film layer are not consistent with the attenuation of visual angle changes is avoided, and the large visual angle color cast phenomenon of the organic light-emitting display panel is improved.
Drawings
Fig. 1a is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
fig. 1b is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for fabricating an organic light emitting display panel according to an embodiment of the present invention;
fig. 6 is a flowchart of another method for fabricating an organic light emitting display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1a is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 1a, an arrow direction indicates a light emitting direction, and the organic light emitting display panel includes: the organic light emitting diode 30 comprises a substrate 10 and an organic light emitting diode 30 located on the substrate 10, wherein the organic light emitting diode 30 comprises a first electrode 31, a light emitting functional layer 32 and a second electrode 32 which are sequentially located on the substrate 10, and the light emitting functional layer 32 comprises a light emitting material layer and an auxiliary light emitting layer, wherein the first electrode 31 can be a cathode, and the second electrode 33 is an anode, or the first electrode 31 is an anode, and the second electrode 33 is a cathode. Holes and electrons are injected into the light emitting functional layer 32 from the first electrode 31 and the second electrode 33, respectively, and are recombined in the light emitting material layer of the light emitting functional layer 32 to form photon emission light, the auxiliary light emitting layer functions to improve the injection efficiency of the holes and the electrons, and the holes and the electrons are confined and recombined in the light emitting material layer, thereby improving the light emitting efficiency. The display panel further includes a corrugated structure 20, the corrugated structure 20 has a concave-convex structure facing the light emitting side (arrow direction in the figure) of the organic light emitting display panel, and the corrugated structure 20 is located between the substrate 10 and the organic light emitting diode 30, so that the light emitting surfaces of the first electrode 31, the light emitting functional layer 32 and the second electrode 33 in the organic light emitting diode 30 are concave-convex surfaces. When the first electrode 31, the light-emitting functional layer 32, and the second electrode 33 are in contact with each other in a concave-convex shape, the contact area therebetween is increased, so that the injection efficiency of carriers (electrons and holes) is increased, and the light-emitting luminance is improved.
Fig. 1b is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 1b, an arrow direction indicates a light emitting direction, and the organic light emitting display panel includes a substrate 10, a corrugated structure 20, an organic light emitting diode 30, and a thin film encapsulation layer 40. The organic light emitting diode 30 includes a first electrode 31, a light emitting function layer 32, and a second electrode 33 sequentially disposed on the substrate 10. The corrugated structure 20 has a concave-convex structure facing the light emitting side (arrow direction in the figure) of the organic light emitting display panel, and the corrugated structure 20 is located between the film encapsulation layer 40 and the organic light emitting diode 30, so that the light emitting surface of the film encapsulation layer 40 is a concave-convex surface. It should be noted that, when the first electrode 31, the light emitting functional layer 32 and the second electrode 33 in the light emitting diode 30 are in planar contact, a fabry-perot interferometer (F-P cavity) can be formed between the first electrode 31 and the second electrode 33 of the light emitting diode 30, and the fabry-perot interferometer has a frequency selection function, which is beneficial to improving the monochromaticity of the emitted light, so that when the first electrode 31, the light emitting functional layer 32 and the second electrode 33 in the light emitting diode 30 are in concave-convex contact, the fabry-perot interferometer is damaged, the monochromaticity of the emitted light is deteriorated, and the color gamut performance of the organic light emitting display panel is reduced. Moreover, changing the film layer in the organic light emitting diode from a planar shape to a concave-convex shape also causes changes in the voltage and current applied to the organic light emitting diode and causes corresponding changes to the driving circuit. In the embodiment of the invention, the Fabry-Perot interferometer formed by the organic light emitting diode is not damaged, so that the monochromaticity of emergent light is ensured to be good, and the good color gamut performance of the organic light emitting display panel is ensured.
The organic light-emitting display panel provided by the embodiment of the invention comprises a substrate, an organic light-emitting diode and a fold structure, wherein the fold structure and the organic light-emitting diode are positioned at the same side of the substrate, the fold structure is provided with a concave-convex structure towards the light-emitting side of the organic light-emitting display panel, and when the fold structure is positioned between the substrate and the organic light-emitting diode, the fold structure enables a first electrode, a light-emitting function layer and a second electrode in the light-emitting diode to form a concave-convex surface, so that when light rays emitted by the light-emitting function layer pass through the concave-convex surface, the total; the organic light-emitting display panel can further comprise a film packaging layer, the fold structure is located between the film packaging layer and the organic light-emitting diode, the fold structure enables the film packaging layer to form a concave-convex surface, light emitted by the light-emitting diode passes through the concave-convex film packaging layer, and the total reflection phenomenon is reduced for passing through a plane, so that the phenomenon that different light-emitting colors caused by total reflection of the plane film layer are not consistent with the attenuation of visual angle changes is avoided, and the large visual angle color cast phenomenon of the organic light-emitting display panel is improved.
Alternatively, referring to fig. 1a, the height H of the protrusions in the relief structure is in the range of 30nm-90 nm. As the film layer (such as the first electrode, the light-emitting functional layer, etc.) is farther from the wrinkle structure, the influence of the wrinkle structure on the film layer is reduced, and when the height of the protrusion in the concave-convex structure is too low, the light-emitting surface of the film layer (such as the second electrode) which is farther from the wrinkle structure cannot be ensured to be a concave-convex surface; when the height of the protrusions in the concave-convex structure is too high, an excessively thick planarization layer needs to be provided in the organic light emitting display panel.
Alternatively, referring to fig. 1a, the distance between two adjacent protrusions in the relief structure is in the range of 200nm-500 nm. If the distance between two adjacent bulges in the concave-convex structure is too small, the influence of the fold structure on the film layer is reduced; if the distance between two adjacent protrusions in the concave-convex structure is too large, the planar structure portion between the two protrusions causes total reflection of light.
Alternatively, referring to fig. 1a and 1b, the concavo-convex structure includes a plurality of hemispherical protrusions. The diameter range of the hemispherical bulge can be 60nm-100nm, and the hemispherical bulge is arranged corresponding to the pixel unit and covers the light emitting region of the pixel unit, so that the occurrence of the total reflection phenomenon can be effectively prevented. In other embodiments, the concave-convex structure may have other shapes, which is not limited in the embodiment of the present invention.
Optionally, the material of the folded structure 20 is organic glass (PMMA), which is called gelatin glass, acrylic, etc., and the organic glass has the advantages of good transparency, chemical stability, mechanical properties and weather resistance, easy dyeing, easy processing, beautiful appearance, etc.
Fig. 2 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 2, the arrow direction indicates a light emitting direction, and on the basis of the organic light emitting display panel shown in fig. 1a, the organic light emitting display panel may further include a thin film encapsulation layer 40, the thin film encapsulation layer 40 is located on one side of the organic light emitting diode 30 away from the substrate 10, the light emitting surface of the thin film encapsulation layer 40 may be a concave-convex surface, and the thin film encapsulation layer 40 covers the organic light emitting diode 30, so that the organic light emitting diode 30 is protected from corrosion of external water vapor and oxygen, the normal light emitting performance of the organic light emitting diode 30 is ensured, and the service life of the organic light.
Fig. 3 is a schematic structural diagram of another organic light-emitting display panel according to an embodiment of the present invention, as shown in fig. 3, the arrow direction indicates the light-emitting direction, the light-emitting functional layer 32 includes a light-emitting material layer 324 and an auxiliary light-emitting layer, and the auxiliary light-emitting layer includes at least one of a hole injection layer 321, a hole transport layer 322, an electron blocking layer 323, a hole blocking layer 325, an electron transport layer 326, and an electron injection layer 327.
Fig. 4 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, as shown in fig. 4, the direction of the arrow indicates the light emitting direction, the shape of the concave-convex structure in the corrugated structure 20 may be a prism (since fig. 4 is a cross-sectional view, the cross-section of the prism is a rectangle), and the manufacturing difficulty of forming the corrugated structure is reduced because the prism is relatively regular and easy to form. It is understood that in other embodiments, the shape of the concave-convex structure in the corrugated structure may also be one or more of a frustum shape, a convex diamond shape, a conical shape or a convex arc shape.
It should be noted that, in the above embodiments, the top-emission organic light-emitting display panel is taken as an example for explanation, and the invention is not limited thereto.
Fig. 5 is a flowchart of a method for manufacturing an organic light emitting display panel according to an embodiment of the present invention, for forming the organic light emitting display panel shown in fig. 1b, and as shown in fig. 5, the method for manufacturing an organic light emitting display panel includes the following steps:
s110, providing a substrate.
The substrate may be a rigid substrate, which may be a glass substrate, for example, or a flexible substrate, which may be Polyimide (PI), for example.
And S120, forming an organic light emitting diode on the substrate.
The process of forming the organic light emitting diode on the substrate may specifically be: forming a first electrode of an organic light emitting diode on a substrate; forming a light emitting function layer on the first electrode; a second electrode is formed on the light-emitting functional layer. The light emitting functional layer may include a light emitting material layer and an auxiliary light emitting layer, and the light emitting material layer and the auxiliary light emitting layer in the light emitting functional layer may be formed by an evaporation method.
And S130, forming a wrinkle structure.
The fold structure has a concave-convex structure towards the light-emitting side of the organic light-emitting display panel.
And S140, forming a thin film packaging layer on the folded structure.
The film packaging layer is formed on the basis of the fold structure, so that the light-emitting surface of the film packaging layer is concave-convex under the influence of the fold structure.
Optionally, the method of forming a corrugated structure comprises:
spin coating organic glass solution;
solidifying the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching method to form a corrugated structure.
Specifically, the method for forming the corrugated structure comprises the following steps: firstly, an organic glass solution is coated on a substrate for forming an organic light emitting diode in a spin coating mode (the rotating speed is 2000-3000rpm, the time is 30-50s), then the organic glass solution is solidified into solid organic glass through baking (the temperature is 80-120 ℃ and the time is 15-30min), and then the solid organic glass is etched by using nitrogen plasma (the flow rate is 10-20sccm, the radio frequency power is 80-120W, and the time is 1-3min) to form a folded structure.
Fig. 6 is a flowchart of another method for fabricating an organic light emitting display panel according to an embodiment of the present invention, for forming the organic light emitting display panel shown in fig. 1a, and as shown in fig. 6, the method for fabricating an organic light emitting display panel includes:
s210, providing a substrate.
The substrate may be a rigid substrate, which may be a glass substrate, for example, or a flexible substrate, which may be Polyimide (PI), for example.
And S220, forming a fold structure.
The fold structure has a concave-convex structure towards the light-emitting side of the organic light-emitting display panel.
And S230, forming an organic light emitting diode on the folded structure.
The process of forming the organic light emitting diode on the corrugated structure may specifically be: forming a first electrode of the organic light emitting diode on the corrugated structure; forming a light emitting function layer on the first electrode; a second electrode is formed on the light-emitting functional layer. The light emitting functional layer may include a light emitting material layer and an auxiliary light emitting layer, and the light emitting material layer and the auxiliary light emitting layer in the light emitting functional layer may be formed by an evaporation method. The organic light emitting diode is formed on the basis of the wrinkle structure, so under the influence of the wrinkle structure, the light emitting surfaces of the first electrode, the light emitting functional layer and the second electrode in the organic light emitting diode are concave-convex surfaces.
Optionally, forming the corrugated structure comprises:
spin coating organic glass solution;
solidifying the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching or wet etching method to form a corrugated structure.
The method for forming the wrinkled structure by using plasma etching and the specific method for spin-coating the organic glass solution and curing the organic glass solution into the solid organic glass are not repeated herein, and the specific method for etching the solid organic glass into the wrinkled structure by using the wet etching method can be specifically as follows: coating photoresist on the solid organic glass, irradiating the photoresist under the shielding of a mask plate to form a specific pattern, placing the photoresist into a developing solution for development, etching the part of the photoresist leaking out of the solid organic glass by using an acidic solution or an alkaline solution, and removing the photoresist to form a fold structure. It is understood that the method using plasma etching is more convenient than wet etching because a mask is not required.
On the basis of the above embodiments, optionally, the auxiliary light emitting layer includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.
Optionally, the shape of the relief structure is one or more of prismatic, prismoid, convex rhombus, pyramidal or convex arc.
Optionally, the relief structure comprises a plurality of hemispherical protrusions.
Optionally, the height of the protrusions in the relief structure is 30nm-90 nm; the distance between two adjacent bulges in the concave-convex structure is 200nm-500 nm.
In the method for manufacturing an organic light-emitting display panel provided by the embodiment of the invention, the fold structure and the organic light-emitting diode are formed at the same side of the substrate, the fold structure is provided with the concave-convex structure towards the light-emitting side of the organic light-emitting display panel, when the fold structure is positioned between the substrate and the organic light-emitting diode, the fold structure enables the first electrode, the light-emitting functional layer and the second electrode in the light-emitting diode to form the concave-convex surface, and when light rays emitted by the light-emitting functional layer pass through the concave-convex surface, the total reflection phenomenon is reduced compared with that when the; the organic light-emitting display panel can further comprise a film packaging layer, the fold structure is located between the film packaging layer and the organic light-emitting diode, the fold structure enables the film packaging layer to form a concave-convex surface, light emitted by the light-emitting diode passes through the concave-convex film packaging layer, and the total reflection phenomenon is reduced for passing through a plane, so that the phenomenon that different light-emitting colors caused by total reflection of the plane film layer are not consistent with the attenuation of visual angle changes is avoided, and the large visual angle color cast phenomenon of the organic light-emitting display panel is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An organic light emitting display panel, comprising:
a substrate;
the organic light-emitting diode comprises a first electrode, a light-emitting functional layer and a second electrode which are sequentially arranged on the substrate, wherein the light-emitting functional layer comprises a light-emitting material layer and an auxiliary light-emitting layer;
the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
the fold structure is positioned between the substrate and the organic light-emitting diode, so that the light-emitting surfaces of the first electrode, the light-emitting functional layer and the second electrode are concave-convex surfaces; or,
the organic light-emitting display panel further comprises a film packaging layer, and the fold structure is located between the film packaging layer and the organic light-emitting diode, so that the light-emitting surface of the film packaging layer is a concave-convex surface.
2. The organic light-emitting display panel according to claim 1, wherein the auxiliary light-emitting layer comprises at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.
3. The organic light-emitting display panel according to claim 1, wherein the shape of the rugged structure is one or more of a prism shape, a truncated pyramid shape, a convex diamond shape, a cone shape, or a convex arc shape.
4. The organic light-emitting display panel according to claim 1, wherein the concavo-convex structure comprises a plurality of hemispherical protrusions.
5. The organic light-emitting display panel according to claim 1, wherein the height of the projections in the concavo-convex structure is 30nm to 90 nm; the distance between two adjacent bulges in the concave-convex structure is 200nm-500 nm.
6. The organic light emitting display panel of claim 1, wherein the material of the corrugated structure is organic glass.
7. A method for manufacturing an organic light emitting display panel includes:
providing a substrate;
forming an organic light emitting diode on the substrate; the organic light emitting diode comprises a first electrode, a light emitting function layer and a second electrode which are sequentially arranged on the substrate, wherein the light emitting function layer comprises a light emitting material layer and an auxiliary light emitting layer;
forming a corrugated structure; the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
and forming a film packaging layer on the fold structure, wherein the light-emitting surface of the film packaging layer is a concave-convex surface.
8. The method of claim 7, wherein the forming a pleat structure comprises:
spin coating organic glass solution;
curing the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching method to form the corrugated structure.
9. A method for manufacturing an organic light emitting display panel includes:
providing a substrate;
forming a corrugated structure; the fold structure is provided with a concave-convex structure towards the light emitting side of the organic light emitting display panel;
forming an organic light emitting diode on the corrugated structure; the organic light emitting diode comprises a first electrode, a light emitting function layer and a second electrode which are sequentially arranged on the substrate, wherein the light emitting function layer comprises a light emitting material layer and an auxiliary light emitting layer; the light emitting surfaces of the first electrode, the light emitting functional layer and the second electrode are concave-convex surfaces.
10. The method of manufacturing of claim 9, wherein the forming a pleat structure comprises:
spin coating organic glass solution;
curing the organic glass solution into solid organic glass;
and etching the solid organic glass by using a plasma etching or wet etching method to form the corrugated structure.
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