Light conversion assembly, display panel, display device and manufacturing method of display panel

Abstract

The embodiment of the invention provides a light conversion assembly, a display panel, a display device and a manufacturing method of the display panel, the light conversion assembly comprises a light conversion layer, the light conversion layer comprises a plurality of light conversion units, at least one light conversion unit is configured to emit conversion light under excitation of excitation light, and the wavelength ranges of the excitation light and the conversion light are different; the light adjusting layer comprises a first light adjusting layer arranged on one side of at least part of the light conversion units, and the reflection wavelength of the first light adjusting layer is at least partially overlapped with the wavelength range of the conversion light of at least part of the light conversion units. The first light adjusting layer is arranged on the side, close to the incident direction of the exciting light, of the light conversion unit, and the reflection wavelength of the first light adjusting layer and the wavelength of the conversion light are at least partially overlapped, so that the conversion light scattered towards the direction of the first light adjusting layer is reflected into the light conversion unit, the light extraction efficiency is improved, and the use performance of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a light conversion component, a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] Quantum dot (QD) materials have the advantages of high luminescent color purity, adjustable luminescent wavelength, and stable materials, and have significant advantages in the field of pursuing high color gamut color display.

[0003] QLED (quantum-dots light emitting diodes) is a new type of light-emitting device. Quantum dot light-emitting diodes (QLED) are gradually becoming one of the mainstream development directions of display technology in the future due to their self-luminous properties that do not require additional light sources, as well as their advantages such as narrow luminous peak, adjustable luminous color, and high luminous efficiency.

[0004] However, the performance of current display products needs to be improved. Summary of the invention

[0005] The embodiments of the present application provide a light conversion component, a display panel, a display device and a method for manufacturing a display panel, aiming to improve the performance of the display panel.

[0006] An embodiment of the first aspect of the present application provides a light conversion component, including: a light conversion layer, the light conversion layer including a plurality of light conversion units, at least one light conversion unit being configured to emit conversion light under the excitation of excitation light, the wavelength ranges of the excitation light and the conversion light being different; a light adjustment layer, including a first light adjustment layer arranged on one side of at least part of the light conversion unit, the reflection wavelength of the first light adjustment layer at least partially overlapping with the wavelength range of the conversion light of at least part of the light conversion unit.

[0007] According to an embodiment of the present application, the light conversion unit includes a first light conversion unit and a second light conversion unit, and the first light adjustment layer is arranged on one side of the first light conversion unit and the second light conversion unit; the first light conversion unit is configured to emit red light under the excitation of excitation light, and the second light conversion unit is configured to emit green light under the excitation of excitation light; wherein the reflection wavelength range of the first light adjustment layer at least partially overlaps with at least one of the red light and the green light.

[0008] According to an embodiment of the present application, the first light adjustment layer includes titanium dioxide film layers and silicon dioxide film layers that are alternately stacked.

[0009] According to an embodiment of the present application, the first light adjustment layer includes SiN layers with a thickness of 90 nm to 110 nm, which are sequentially arranged in a direction away from the light conversion unit. xFilm layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x , SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Membrane layer.

[0010] According to an embodiment of the present application, materials of the first light conversion unit and the second light conversion unit include quantum dot materials.

[0011] According to an embodiment of the present application, the light conversion component also includes a third light conversion unit, which is configured to emit blue light under the excitation of excitation light, and the first light adjustment layer is arranged on one side of the first light conversion unit, the second light conversion unit and the third light conversion unit, and the reflection wavelength range of the first light adjustment layer at least partially overlaps with the wavelength range of the conversion light of at least one of the first light conversion unit, the second light conversion unit and the third light conversion unit; or, the excitation light is blue light, the third light conversion unit is made of transparent material for transmitting blue light, and the first light adjustment layer is arranged on one side of the first light conversion unit and the second light conversion unit.

[0012] According to an embodiment of the present application, the excitation light is blue light, the third light conversion unit is made of a transparent material, and the first light adjustment layer is disposed on one side of the first light conversion unit, the second light conversion unit, and the third light conversion unit.

[0013] According to an embodiment of the present application, the light adjustment layer further includes a second light adjustment layer, which is disposed on a side of at least part of the light conversion unit away from the first light adjustment layer, and a reflection wavelength range of the second light adjustment layer at least partially overlaps with a wavelength range of the excitation light.

[0014] According to an embodiment of the present application, the light conversion unit includes a first light conversion unit, a second light conversion unit and a third light conversion unit. The third light conversion unit is made of a transparent material and is used to pass the excitation light. The second light adjustment layer is arranged on the side of the first light conversion unit and the second light conversion unit away from the first light adjustment layer.

[0015] According to an embodiment of the present application, the excitation light is blue light, and the reflection wavelength range of the second light adjustment layer at least partially overlaps with the blue light.

[0016] According to an embodiment of the present application, the first light adjustment layer and the second light adjustment layer both include a first Bragg reflection layer; the first Bragg reflection layer includes at least two stacked functional layer groups, each functional layer group includes two functional layers, and the refractive indices of two adjacent functional layers are different.

[0017] According to an embodiment of the present application, the material of the functional layer includes TiO 2 、SiO 2 、Al 2 O 3 、SiO x and SiN x At least two of the .

[0018] According to an embodiment of the present application, the functional layer group includes a first functional layer and a second functional layer which are stacked, and a thickness d of the functional layer group satisfies the following relationship:

[0019] △f 0 / f 0 =4arcsin[(n 2 -n 1 )÷(n 2 +n 1 )] / π

[0020] d=(2k+1)f 0 ÷4

[0021] Among them, K is a natural number, Δf 0 represents the bandwidth of the photonic bandgap, f 0 represents the wavelength corresponding to the central frequency band of the photonic band gap, n 1 represents the refractive index of the first functional layer, n 2 represents the refractive index of the second functional layer, and d represents the thickness of the functional layer group.

[0022] According to an embodiment of the present application, the light conversion component also includes a filter layer, which is arranged on the side of the light conversion layer away from the first light adjustment layer. The filter layer includes a plurality of filter units, and the orthographic projection of each filter unit on the light conversion layer at least partially overlaps with the orthographic projection of each light conversion unit on the light conversion layer.

[0023] According to an embodiment of the present application, a light shielding portion is disposed between two adjacent filter units.

[0024] According to an embodiment of the present application, an isolation portion is disposed between two adjacent light conversion units.

[0025] The embodiment of the second aspect of the present application further provides a display panel, comprising the light conversion component in any embodiment of the first aspect.

[0026] According to an embodiment of the present application, the display panel includes: a substrate; a light-emitting layer, which is arranged on one side of the substrate, and the light-emitting layer is used to emit excitation light in a direction away from the substrate; a light conversion component, which is arranged on the side of the light-emitting layer away from the substrate, and the first light adjustment layer is located on the side of the light conversion layer facing the light-emitting layer.

[0027] According to an embodiment of the present application, a reflective layer is provided on the light-emitting side of the light-emitting layer, and the reflective layer is located between the first light adjustment layer and the light-emitting layer; the reflective layer is configured to reflect part of the excitation light of the light-emitting layer so that the reflected light interferes constructively with the excitation light.

[0028] According to an embodiment of the present application, the reflective layer includes at least one of a second Bragg reflective layer, an encapsulation layer, or a light extraction layer.

[0029] According to an embodiment of the present application, the reflective layer includes a light extraction layer, a second Bragg reflective layer, and an encapsulation layer which are sequentially arranged in a direction away from the substrate.

[0030] According to an embodiment of the present application, the second Bragg reflection layer includes at least two stacked functional layer groups, each functional layer group includes two functional layers, and the refractive indexes of two adjacent functional layers are different.

[0031] According to an embodiment of the present application, the material of the functional layer includes TiO 2 、SiO 2 、Al 2 O 3 、SiO x and SiN x At least two of the .

[0032] According to an embodiment of the present application, the excitation light of the light-emitting layer is blue light, and the second Bragg reflection layer includes SiO2 with a thickness of 95 nm to 115 nm, which is sequentially arranged in a direction away from the light-emitting layer. x Film layer, SiN with a thickness of 55nm to 75nm x Film layer, SiO with a thickness of 30nm to 50nm x Film layer, SiN with a thickness of 140nm to 160nm x Membrane layer.

[0033] According to an embodiment of the present application, the display panel also includes: a pixel definition layer, which is arranged on one side of the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion; an isolation structure, the isolation structure is arranged on one side of the substrate, the isolation structure encloses an isolation opening, and the isolation opening and the pixel opening are connected.

[0034] According to an embodiment of the present application, the isolation structure is located on a side of the pixel defining portion facing away from the substrate.

[0035] According to an embodiment of the present application, the isolation structure includes a first sublayer and a second sublayer, the second sublayer is located on a side of the first sublayer facing away from the substrate, and the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the second sublayer on the substrate.

[0036] According to an embodiment of the present application, the light-emitting layer also includes a light-emitting functional layer and a first electrode layer. The light-emitting functional layer is arranged on one side of the substrate. The light-emitting functional layer includes a plurality of light-emitting structures arranged in the pixel opening. The first electrode layer includes a first electrode located on the side of each light-emitting structure away from the substrate. The first electrode and the first sublayer are connected.

[0037] An embodiment of the third aspect of the present application further provides a display device, comprising the display panel in any embodiment of the second aspect described above.

[0038] The fourth aspect of the present application also provides a method for manufacturing a display panel, including:

[0039] A light emitting layer is formed on one side of the substrate.

[0040] A first light adjustment layer is formed on the side of the light emitting layer facing away from the substrate.

[0041] A light conversion layer is formed on the side of the first light adjustment layer away from the light emitting layer. The light conversion layer includes a plurality of light conversion units. At least one light conversion unit is configured to emit conversion light under the excitation of the excitation light. The wavelength ranges of the excitation light and the conversion light are different.

[0042] The reflection wavelength of the first light adjustment layer at least partially overlaps with the wavelength range of the converted light of at least part of the light conversion unit.

[0043] In an embodiment of the present application, at least one light conversion unit emits conversion light under the excitation of the excitation light, and the excitation light enters the light conversion unit through the first light adjustment layer, and after conversion by the light conversion unit, the converted light is emitted in a direction away from the first light adjustment layer. Part of the converted light will be scattered in the direction of the first light adjustment layer, thereby losing part of the light output. The first light adjustment layer is arranged on the side of the light conversion unit close to the direction of the excitation light, and the reflection wavelength of the first light adjustment layer at least partially overlaps with the wavelength of the converted light, so that the converted light scattered in the direction of the first light adjustment layer is reflected into the light conversion unit, thereby improving the light output efficiency, which is beneficial to improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0045] Figure 1 is a structural schematic diagram of a light conversion component provided in an embodiment of the present application;

[0046] Figure 2 is a schematic structural diagram of a first light adjustment layer provided in an embodiment of the present application;

[0047] Figure 3 is a schematic structural diagram of another light conversion component provided in an embodiment of the present application;

[0048] Figure 4 is a schematic structural diagram of another first light adjustment layer provided in an embodiment of the present application;

[0049] Figure 5 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0050] Figure 6 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0051] Figures 7 to 9 It is a schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application.

[0052] Explanation of the reference numerals: 100, light conversion layer; 110, light conversion unit; 111, first light conversion unit; 112, second light conversion unit; 113, third light conversion unit; 120, isolation part; 200, light adjustment layer; 210, first light adjustment layer; 211, functional layer group; 211a, first functional layer; 211b, second functional layer; 212, filling layer; 220, second light adjustment layer; 300, filter layer; 310, filter unit; 320, shading part; 400, substrate; 500, light emitting layer; 510, pixel definition layer; 511, pixel definition part; 520, light emitting structure; 530, isolation structure; 531, first sublayer; 532, second sublayer; 540, first electrode; 550, second electrode; 600, reflection layer; 610, light extraction layer; 620, second Bragg reflection layer; 630, encapsulation layer. DETAILED DESCRIPTION

[0053] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0054] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] like Figure 1 As shown, a light conversion component provided by an embodiment of the first aspect of the present application includes: a light conversion layer 100, the light conversion layer 100 includes a plurality of light conversion units 110, at least one light conversion unit 110 is configured to emit conversion light under the excitation of excitation light, and the wavelength ranges of the excitation light and the conversion light are different; a light adjustment layer 200, including a first light adjustment layer 210 arranged on one side of at least part of the light conversion unit 110, and the reflection wavelength of the first light adjustment layer 210 at least partially overlaps with the wavelength range of the conversion light of at least part of the light conversion unit 110.

[0057] In this embodiment, at least one light conversion unit 110 emits conversion light under the excitation of the excitation light, and the excitation light is refracted by the first light adjustment layer 210 and then incident on the light conversion unit 110. After conversion by the light conversion unit 110, the converted light is emitted in a direction away from the first light adjustment layer 210. Part of the converted light will be scattered in the direction of the first light adjustment layer 210, thereby losing part of the light output. The first light adjustment layer 210 is arranged on the side of the light conversion unit 110 close to the incident direction of the excitation light, and the reflection wavelength of the first light adjustment layer 210 at least partially overlaps with the wavelength of the converted light, so that the converted light scattered in the direction of the first light adjustment layer 210 is reflected into the light conversion unit 110, thereby increasing the light output, which is beneficial to improving the performance of the display panel.

[0058] like Figure 1As shown, in some optional embodiments, the light conversion unit 110 includes a first light conversion unit 111 and a second light conversion unit 112 , and the first light adjustment layer 210 is disposed on one side of the first light conversion unit 111 and the second light conversion unit 112 .

[0059] The first light conversion unit 111 is configured to emit red light under the excitation of the excitation light, and the second light conversion unit 112 is configured to emit green light under the excitation of the excitation light.

[0060] The reflection wavelength range of the first light adjustment layer 210 at least partially overlaps with at least one of the red light and the green light.

[0061] In these optional embodiments, the first light conversion unit 111 emits red light under the excitation of the excitation light, the second light conversion unit 112 is configured to emit green light under the excitation of the excitation light, the first light adjustment layer 210 is arranged on one side of the first light conversion unit 111 and the second light conversion unit 112, and the reflection wavelength range of the first light adjustment layer 210 at least partially overlaps with at least one of the red light and the green light, so that at least one of the red light and the green light scattered toward the first light adjustment layer 210 is reflected back to the light conversion unit 110, thereby improving the light output efficiency.

[0062] Optionally, the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelengths of red light and green light, so that the red light scattered by the first light conversion unit 111 toward the first light adjustment layer 210 is reflected to the first light conversion unit 111, and the green light scattered by the second light conversion unit 112 toward the first light adjustment layer 210 is reflected to the second light conversion unit 112, thereby increasing the amount of red and green light emitted by the display panel.

[0063] Optionally, the first light adjustment layer 210 includes titanium dioxide film layers and silicon dioxide film layers that are alternately stacked, so that the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelengths of red light and green light.

[0064] The first light adjustment layer 210 includes a multilayer film structure formed by alternately stacked titanium dioxide film layers and silicon dioxide film layers, and has a reflectivity of nearly 100% for red and green light, thereby effectively improving the light extraction efficiency of red and green light of the display panel.

[0065] Optional, such as Figure 2 As shown, the first light adjustment layer 210 includes SiN layers with a thickness of 90 nm to 110 nm which are sequentially arranged in a direction away from the light conversion unit 110. x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x , SiO with a thickness of 80nm to 100nm xFilm layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x The film layer is formed so that the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelengths of red light and green light.

[0066] Among them, in the first light adjustment layer 210, the thickness of the SiNx film layer with a thickness of 90nm to 110nm can be specifically 90nm, 95nm, 100nm, 105nm and 110nm, etc. The thickness of the SiOx film layer with a thickness of 80nm to 100nm can be specifically 80nm, 85nm, 90nm, 95nm and 100nm, etc. The thickness of the SiNx film layer with a thickness of 75nm to 95nm can be specifically 75nm, 80nm, 85nm, 90nm and 95nm, etc. So that the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelength of red light and green light, thereby effectively improving the light extraction efficiency of red and green light of the display panel.

[0067] Optional, such as Figure 2 As shown, the first light adjustment layer 210 includes SiN with a thickness of 100 nm arranged in sequence in a direction away from the light conversion unit 110. x Film layer, SiO with a thickness of 90nm x Film layer, SiN with a thickness of 85nm x , SiO with a thickness of 90nm x Film layer, SiN with a thickness of 85nm x Film layer, SiO with a thickness of 90nm x Film layer, SiN with a thickness of 85nm x Film layer, SiO with a thickness of 90nm x Film layer, SiN with a thickness of 85nm x The film layer is formed so that the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelengths of red light and green light. The reflectivity of the first light adjustment layer 210 for the red light and green light scattered by the first light conversion unit 111 and the second light conversion unit 112 toward the first light adjustment layer 210 is about 70%, thereby effectively improving the light extraction efficiency of the red and green light of the display panel.

[0068] Optionally, the material of the first light conversion unit 111 and the second light conversion unit 112 includes quantum dot material.

[0069] like Figure 1As shown, in some optional embodiments, the light conversion component also includes a third light conversion unit 113, the third light conversion unit 113 is configured to emit blue light under the excitation of the excitation light, the first light adjustment layer 210 is arranged on one side of the first light conversion unit 111, the second light conversion unit 112 and the third light conversion unit 113, and the reflection wavelength range of the first light adjustment layer 210 at least partially overlaps with the wavelength range of the conversion light of at least one of the first light conversion unit 111, the second light conversion unit 112 and the third light conversion unit 113.

[0070] In these optional embodiments, the third light conversion unit 113 emits blue light under the excitation of the excitation light, the first light adjustment layer 210 is arranged on one side of the first light conversion unit 111, the second light conversion unit 112 and the third light conversion unit 113, and the reflection wavelength range of the first light adjustment layer 210 at least partially overlaps with at least one of the red light, green light and blue light, so that at least one of the red light, green light and blue light scattered toward the first light adjustment layer 210 is reflected back to the light conversion unit 110, thereby improving the light output efficiency.

[0071] Optionally, the reflection wavelength range of the first light adjustment layer 210 overlaps with the wavelengths of red light, blue light and green light, so that the red light scattered by the first light conversion unit 111 toward the first light adjustment layer 210 is reflected to the first light conversion unit 111, and the green light scattered by the second light conversion unit 112 toward the first light adjustment layer 210 is reflected to the second light conversion unit 112, and the blue light scattered by the third light conversion unit 113 toward the first light adjustment layer 210 is reflected to the third light conversion unit 113, thereby increasing the light output of red light, green light and blue light of the display panel.

[0072] like Figure 3 As shown, in some other optional embodiments, the excitation light is blue light, the third light conversion unit 113 is made of a transparent material for transmitting the blue light, and the first light adjustment layer 210 is disposed on one side of the first light conversion unit 111 and the second light conversion unit 112 .

[0073] In these optional embodiments, the third light conversion unit 113 is made of a transparent material and can transmit blue light, and the first light adjustment layer 210 is disposed on one side of the first light conversion unit 111 and the second light conversion unit 112 to reflect red light and green light. Optionally, the third light conversion unit 113 and the first light adjustment layer 210 are staggered, that is, the third light conversion unit 113 and the orthographic projection of the first light adjustment layer 210 on the light conversion layer 100 are staggered, so as to avoid the first light adjustment layer 210 affecting the amount of blue light entering the third light conversion unit 113. Optionally, a filling layer 212 is disposed on one side of the third light conversion unit 113, and the filling layer 212 is disposed on the same layer as the first light adjustment layer 210 to flatten the first light adjustment layer 210.

[0074] Optional, such as Figure 1 As shown, the excitation light is blue light, the third light conversion unit 113 is made of transparent material, and the first light adjustment layer 210 is disposed on one side of the first light conversion unit 111, the second light conversion unit 112, and the third light conversion unit 113. The first light adjustment layer 210 is disposed on one side of the third light conversion unit 113, so that the blue light scattered by the transparent material toward the first light adjustment layer 210 can be reflected back to the third light conversion unit 113, thereby improving the light extraction efficiency of the blue light.

[0075] Optionally, the material of the third light conversion unit 113 includes optical glue.

[0076] like Figure 1 As shown, in some optional embodiments, the light adjustment layer 200 also includes a second light adjustment layer 220, which is disposed on a side of at least a portion of the light conversion unit 110 away from the first light adjustment layer 210, and a reflection wavelength range of the second light adjustment layer 220 at least partially overlaps with a wavelength range of the excitation light.

[0077] In these optional embodiments, the excitation light enters the light conversion unit 110 from the first light adjustment layer 210 and is emitted from the second light adjustment layer 220. Part of the excitation light is not converted in the light conversion unit 110. The unconverted excitation light passes through the second light adjustment layer 220, and the reflection wavelength range of the second light adjustment layer 220 at least partially overlaps with the wavelength range of the excitation light, so that the unconverted excitation light is reflected back to the light conversion unit 110 for light conversion to form converted light, thereby improving the light conversion efficiency.

[0078] like Figure 1 As shown, in some optional embodiments, the light conversion unit 110 includes a first light conversion unit 111, a second light conversion unit 112 and a third light conversion unit 113, the third light conversion unit 113 is made of transparent material for transmitting excitation light, and the second light adjustment layer 220 is arranged on the side of the first light conversion unit 111 and the second light conversion unit 112 away from the first light adjustment layer 210.

[0079] In these optional embodiments, the second light adjustment layer 220 is disposed on the side of the first light conversion unit 111 and the second light conversion unit 112 away from the first light adjustment layer 210, so that the unconverted excitation light of the first light conversion unit 111 and the second light conversion unit 112 is reflected back to the first light conversion unit 111 and the second light conversion unit 112 for light conversion to form converted light. The third light conversion unit 113 is a transparent material for transmitting the excitation light, and the second light adjustment layer 220 is not disposed on the side of the third light conversion unit 113 away from the first light adjustment layer 210, that is, the orthographic projection of the second light adjustment layer 220 on the first light adjustment layer 210 does not overlap with the orthographic projection of the third light conversion unit 113 on the first light adjustment layer 210, so as to avoid reflecting the excitation light transmitted by the third light conversion unit 113.

[0080] Optionally, the excitation light may be blue light, and the reflection wavelength range of the second light adjustment layer 220 at least partially overlaps with the blue light, thereby reflecting the unconverted blue light back to the first light conversion unit 111 and the second light conversion unit 112 .

[0081] like Figure 1 and Figure 4 As shown, in some optional embodiments, the first light adjustment layer 210 and the second light adjustment layer 220 both include a first Bragg reflection layer; the first Bragg reflection layer includes at least two groups of stacked functional layer groups 211, each functional layer group 211 includes two functional layers, and the refractive indices of two adjacent functional layers are different.

[0082] In these optional embodiments, the first Bragg reflector layer includes at least two stacked functional layer groups 211, each functional layer group 211 includes two functional layers, for example, each functional layer group 211 includes a first functional layer 211a and a second functional layer 211b, that is, the first Bragg reflector layer includes at least four stacked functional layers, and the refractive index of two adjacent functional layers is different. The four functional layers form a group of photonic crystals to reflect light in a preset wavelength band, meeting the requirements of the Bragg reflector principle.

[0083] Optionally, the first Bragg reflection layer is formed by alternatingly stacking high-refractive-index functional layers and low-refractive-index functional layers.

[0084] Optionally, the refractive index of the high refractive index material is greater than or equal to 2.0, the refractive index of the low refractive index material is about 1.4, and the functional layer can be formed by sputtering deposition, physical vapor deposition, chemical vapor deposition, ion beam deposition, molecular beam epitaxy or similar deposition methods.

[0085] Optionally, the material of the functional layer includes TiO 2 、SiO 2 、Al 2 O 3 、SiOx and SiN x At least two of the .

[0086] like Figure 1 and Figure 4 As shown, in some optional embodiments, the functional layer group 211 includes a first functional layer 211a and a second functional layer 211b stacked, and the thickness d of the functional layer group 211 satisfies the following relationship:

[0087] △f 0 / f 0 =4arcsin[(n 2 -n 1 )÷(n 2 +n 1 )] / π

[0088] d=(2k+1)f 0 ÷4

[0089] Among them, K is a natural number, Δf 0 represents the bandwidth of the photonic bandgap, f 0 represents the wavelength corresponding to the central frequency band of the photonic band gap, n 1 represents the refractive index of the first functional layer 211a, n 2 represents the refractive index of the second functional layer 211 b , and d represents the thickness of the functional layer group 211 .

[0090] In these optional embodiments, the reflection wavelength range of the first Bragg reflection layer can be adjusted by selecting the materials of the first functional layer 211 a and the second functional layer 211 b to determine the refractive index and selecting the thickness of the functional layer group 211 .

[0091] like Figure 1 As shown, in some optional embodiments, the light conversion component further includes a filter layer 300, which is disposed on the side of the light conversion layer 100 away from the first light adjustment layer 210, and the filter layer 300 includes a plurality of filter units 310, and the orthographic projection of each filter unit 310 on the light conversion layer 100 at least partially overlaps with the orthographic projection of each light conversion unit 110 on the light conversion layer 100.

[0092] In these optional embodiments, the filter unit 310 is used to transmit light in a certain wavelength range and block light in other wavelength ranges, thereby achieving a filtering effect. The wavelength range of the light that can be transmitted by each filter unit 310 overlaps with the wavelength range of the converted light of each light conversion unit 110, so that the converted light can be transmitted and the light in other wavelength ranges can be blocked.

[0093] Optionally, the third light conversion unit 113 is made of a transparent material for transmitting the excitation light, and the transmittable wavelength range of the filter unit 310 corresponding to the third light conversion unit 113 overlaps with the wavelength of the excitation light.

[0094] Optional, such as Figure 1 As shown, a light shielding portion 320 is disposed between two adjacent light filtering units 310 ; the light shielding portion 320 isolates the light filtering units 310 from each other to improve the light crosstalk problem.

[0095] Optional, such as Figure 1 As shown, an isolation portion 120 is disposed between two adjacent light conversion units 110 , and the isolation portion 120 isolates the light conversion units 110 from each other to improve the light crosstalk problem.

[0096] The embodiment of the second aspect of the present application also provides a display panel, including the light conversion component of any of the above-mentioned first aspect embodiments. Since the display panel provided by the embodiment of the second aspect of the present application includes the light conversion component of any of the above-mentioned first aspect embodiments, the display panel provided by the embodiment of the second aspect of the present application has the beneficial effects of the light conversion component of any of the above-mentioned first aspect embodiments, which will not be repeated here.

[0097] like Figure 5 As shown, in some optional embodiments, the display panel includes: a substrate 400; a light-emitting layer 500, which is arranged on one side of the substrate 400, and the light-emitting layer 500 is used to emit excitation light along a direction away from the substrate 400; a light conversion component, which is arranged on the side of the light-emitting layer 500 away from the substrate 400, and the first light adjustment layer 210 is located on the side of the light conversion layer 100 facing the light-emitting layer 500.

[0098] In these optional embodiments, the first light adjustment layer 210 is located on the side of the light conversion layer 100 facing the light emitting layer 500, the excitation light enters each light conversion unit 110 from the first light adjustment layer 210, and at least one light conversion unit 110 emits conversion light under the excitation of the excitation light, and the conversion light is emitted in a direction away from the first light adjustment layer 210. Part of the conversion light will be scattered toward the first light adjustment layer 210, thereby losing part of the light output. The first light adjustment layer 210 is arranged on the side of the light conversion unit 110 facing the light emitting layer 500, and the reflection wavelength of the first light adjustment layer 210 overlaps with the wavelength of the conversion light at least partially, so that the conversion light scattered toward the first light adjustment layer 210 is reflected into the light conversion unit 110, thereby improving the light output efficiency, which is beneficial to improving the performance of the display panel.

[0099] like Figure 5As shown, in some optional embodiments, a reflective layer 600 is provided on the light-emitting side of the light-emitting layer 500, and the reflective layer 600 is located between the first light adjustment layer 210 and the light-emitting layer 500; the reflective layer 600 is configured to reflect part of the excitation light of the light-emitting layer 500 so that the reflected light interferes constructively with the excitation light.

[0100] In these optional embodiments, the excitation light of the light-emitting layer 500 is directed toward the reflective layer 600, and the reflective layer 600 reflects part of the excitation light back to the light-emitting layer 500, and the reflected light and the excitation light form a superposition of waves to achieve constructive interference, thereby enhancing the light effect.

[0101] Optional, such as Figure 5 As shown, the reflective layer 600 includes at least one of a second Bragg reflective layer 620 , an encapsulation layer 630 , or a light extraction layer 610 .

[0102] The second Bragg reflection layer 620 , the encapsulation layer 630 or the light extraction layer 610 can all reflect part of the excitation light, and the reflection layer 600 can be at least one of the second Bragg reflection layer 620 , the encapsulation layer 630 or the light extraction layer 610 .

[0103] Optionally, the light extraction layer 610 may include a first refractive layer and a second refractive layer stacked in sequence in a direction away from the light emitting layer 500 , and the refractive index of the first refractive layer is greater than the refractive index of the second refractive layer.

[0104] Optional, such as Figure 5 As shown, the reflective layer 600 includes a light extraction layer 610 , a second Bragg reflective layer 620 , and an encapsulation layer 630 which are sequentially arranged in a direction away from the substrate 400 .

[0105] In some optional embodiments, the second Bragg reflection layer 620 includes at least two stacked functional layer groups 211 , each functional layer group 211 includes two functional layers, and the refractive indexes of two adjacent functional layers are different.

[0106] In these optional embodiments, the second Bragg reflector layer 620 includes at least four stacked functional layers, and the refractive indexes of two adjacent functional layers are different. The four functional layers form a group of photonic crystals to reflect light of a preset wavelength band, meeting the requirements of the Bragg reflector principle.

[0107] Optionally, the material of the functional layer includes TiO 2 、SiO 2 、Al 2 O 3 、SiO x and SiN x At least two of the .

[0108] Optionally, the excitation light of the light emitting layer 500 is blue light, and the second Bragg reflection layer 620 includes SiO2 with a thickness of 95 nm to 115 nm, which are sequentially arranged in a direction away from the light emitting layer 500. x Film layer, SiN with a thickness of 55nm to 75nm x Film layer, SiO with a thickness of 30nm to 50nm x Film layer, SiN with a thickness of 140nm to 160nm x The film layer is formed so that the second Bragg reflection layer 620 reflects at least a portion of the blue light, so that the reflected light interferes constructively with the excitation light of the light-emitting layer 500 .

[0109] In the second Bragg reflection layer 620, the thickness of the SiOx film layer with a thickness of 95nm to 115nm can be specifically 95nm, 100nm, 105nm, 110nm, 115nm, etc. The thickness of the SiNx film layer with a thickness of 55nm to 75nm can be specifically 55nm, 60nm, 65nm, 70nm, 75nm, etc. The thickness of the SiOx film layer with a thickness of 30nm to 50nm can be specifically 30nm, 35nm, 40nm, 45nm, 50nm, etc. The thickness of the SiNx film layer with a thickness of 140nm to 160nm can be specifically 140nm, 145nm, 150nm, 1555nm, 160nm, etc.

[0110] Optionally, the excitation light of the light emitting layer 500 is blue light, and the second Bragg reflection layer 620 includes SiO2 with a thickness of 105 nm and arranged in sequence in a direction away from the light emitting layer 500. x Film layer, SiN with a thickness of 65nm x Film layer, SiO with a thickness of 40nm x Film layer, SiN with a thickness of 150nm x The film layer is formed so that the second Bragg reflection layer 620 reflects at least part of the blue light, thereby making the reflected light interfere constructively with the excitation light of the light emitting layer 500, and enhancing the light output intensity of the display panel.

[0111] like Figure 5 As shown, in some optional embodiments, the display panel further includes: a pixel definition layer 510, which is disposed on one side of the substrate 400, and the pixel definition layer 510 includes a pixel defining portion 511 and a pixel opening formed by the pixel defining portion 511. An isolation structure 530, which is disposed on one side of the substrate 400, and the isolation structure 530 encloses an isolation opening, and the isolation opening is connected to the pixel opening.

[0112] In these optional embodiments, the isolation structure 530 encloses a plurality of isolation openings, and the isolation openings are connected to the pixel openings. When the light-emitting functional layer material is set on the entire surface, the light-emitting functional layer material falls into the opening formed by the isolation openings and the pixel openings. After removing the material of the light-emitting functional layer outside the target isolation opening, a light-emitting structure 520 located in each isolation opening is formed. The light-emitting structure 520 is located in each isolation opening, and the isolation structure 530 can reduce the light crosstalk problem between adjacent light-emitting structures 520.

[0113] Optional, such as Figure 5 As shown, the isolation structure 530 is located on the side of the pixel defining portion 511 away from the substrate 400 , that is, the pixel defining portion 511 is first formed on one side of the substrate 400 , and the isolation structure 530 is formed on the side of the pixel defining portion 511 away from the substrate 400 .

[0114] Optional, such as Figure 5 As shown, the isolation structure 530 includes a first sublayer 531 and a second sublayer 532 , the second sublayer 532 is located on the side of the first sublayer 531 facing away from the substrate 400 , and the orthographic projection of the first sublayer 531 on the substrate 400 is located within the orthographic projection of the second sublayer 532 on the substrate 400 .

[0115] The orthographic projection size of the first sublayer 531 on the substrate 400 is smaller than the orthographic projection size of the second sublayer 532 on the substrate 400, so as to form a concave under the second sublayer 532. During the preparation of the light-emitting structure 520, the material of the light-emitting functional layer can be separated into mutually independent light-emitting structures 520 by the isolation structure 530, and the precision mask plate evaporation process can be omitted, thereby reducing the preparation cost.

[0116] Optional, such as Figure 5 As shown, the light-emitting layer 500 also includes a light-emitting functional layer and a first electrode layer. The light-emitting functional layer is arranged on one side of the substrate 400. The light-emitting functional layer includes a plurality of light-emitting structures 520 arranged in the pixel opening. The first electrode layer includes a first electrode 540 located on the side of each light-emitting structure 520 away from the substrate 400. The first electrode 540 is connected to the first sublayer 531.

[0117] The first electrode layer is used to drive and control the light-emitting structure 520 in the light-emitting functional layer to emit light. Due to the existence of the isolation structure 530, the first electrode layer can also form multiple first electrodes 540 located in multiple isolation openings without the need for a fine metal mask, thereby reducing the manufacturing cost of the display panel. The first electrode 540 is electrically connected to the first sublayer 531, so that each first electrode 540 in each isolation opening can be turned on through the first sublayer 531.

[0118] Optional, such as Figure 5As shown, the first electrode 540 is a cathode layer, and the light-emitting layer 500 further includes a second electrode 550 on a side of each light-emitting structure 520 facing the substrate 400 , and the second electrode 550 is an anode.

[0119] The embodiment of the third aspect of the present application also provides a display device, including the display panel of any of the second aspect embodiments. Since the display device provided by the embodiment of the third aspect of the present application includes the display panel of any of the second aspect embodiments, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel of any of the second aspect embodiments, which will not be described in detail here.

[0120] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0121] The fourth aspect of the present application also provides a method for manufacturing a display panel. Figure 6 As shown, the following steps are included:

[0122] Step S01: Figure 7 As shown, a light emitting layer 500 is formed on one side of a substrate 400 .

[0123] Step S02: Figure 8 As shown, the first light adjustment layer 210 is formed on the side of the light emitting layer 500 away from the substrate 400 .

[0124] Step S03: Fig. 9 As shown, a light conversion layer 100 is formed on the side of the first light adjustment layer 210 away from the light emitting layer 500, and the light conversion layer 100 includes a plurality of light conversion units 110, at least one light conversion unit 110 is configured to emit conversion light under the excitation of excitation light, and the wavelength ranges of the excitation light and the conversion light are different; the reflection wavelength of the first light adjustment layer 210 at least partially overlaps with the wavelength range of the conversion light of at least part of the light conversion unit 110.

[0125] In these optional embodiments, the first light adjustment layer 210 is located on the side of the light conversion layer 100 facing the light emitting layer 500, the excitation light enters each light conversion unit 110 from the first light adjustment layer 210, and at least one light conversion unit 110 emits conversion light under the excitation of the excitation light, and the conversion light is emitted in a direction away from the first light adjustment layer 210. Part of the conversion light will be scattered toward the first light adjustment layer 210, thereby losing part of the light output. The first light adjustment layer 210 is arranged on the side of the light conversion unit 110 facing the light emitting layer 500, and the reflection wavelength of the first light adjustment layer 210 overlaps with the wavelength of the conversion light at least partially, so that the conversion light scattered toward the first light adjustment layer 210 is reflected into the light conversion unit 110, thereby improving the light output efficiency, which is beneficial to improving the performance of the display panel.

[0126] Optionally, in step S02, it also includes: Figure 4 and Figure 5 As shown, at least two stacked functional layer groups 211 are formed on the side of the light-emitting layer 500 away from the substrate 400, and each functional layer group 211 includes two functional layers. The four functional layers form a group of photonic crystals to reflect light of a preset wavelength band, meeting the requirements of the Bragg reflector principle.

[0127] Optionally, in step S02, it also includes: Figure 4 and Figure 5 As shown, the first functional layer 211 a and the second functional layer 211 b are alternately stacked on the side of the light emitting layer 500 away from the substrate 400 , and the first functional layer 211 a and the second functional layer 211 b have different refractive indices.

[0128] Optionally, after step S03, as Figure 6 As shown, it also includes:

[0129] Step S04: Figure 5 As shown, a filter layer 300 is formed on the side of the light conversion layer 100 away from the substrate 400, and the filter layer 300 includes a plurality of filter units 310;

[0130] Optionally, before step S04, the method further includes: Figure 5 As shown, a second light adjustment layer 220 is formed on the side of the light conversion layer 100 away from the substrate 400, and the second light adjustment layer 220 is arranged on the side of at least part of the light conversion unit 110 away from the first light adjustment layer 210, and the reflection wavelength range of the second light adjustment layer 220 at least partially overlaps with the wavelength range of the excitation light.

[0131] In these optional embodiments, the excitation light enters the light conversion unit 110 from the first light adjustment layer 210 and is emitted from the second light adjustment layer 220. Part of the excitation light is not converted in the light conversion unit 110. The unconverted excitation light passes through the second light adjustment layer 220, and the reflection wavelength range of the second light adjustment layer 220 at least partially overlaps with the wavelength range of the excitation light, so that the unconverted excitation light is reflected back to the light conversion unit 110 for light conversion to form converted light, thereby improving the light conversion efficiency.

[0132] Optional, such as Figure 5 As shown, the light conversion unit 110 includes a first light conversion unit 111, a second light conversion unit 112 and a third light conversion unit 113. The third light conversion unit 113 is made of transparent material for transmitting excitation light. The second light adjustment layer 220 is arranged on the side of the first light conversion unit 111 and the second light conversion unit 112 away from the first light adjustment layer 210.

[0133] In these optional embodiments, the second light adjustment layer 220 is disposed on the side of the first light conversion unit 111 and the second light conversion unit 112 away from the first light adjustment layer 210, so that the unconverted excitation light of the first light conversion unit 111 and the second light conversion unit 112 is reflected back to the first light conversion unit 111 and the second light conversion unit 112 for light conversion to form converted light. The third light conversion unit 113 is made of a transparent material for transmitting the excitation light, and the second light adjustment layer 220 is not disposed on the side of the third light conversion unit 110 away from the first light adjustment layer 210, that is, the orthographic projection of the second light adjustment layer 220 on the first light adjustment layer 210 does not overlap with the orthographic projection of the third light conversion unit 113 on the first light adjustment layer 210, so as to avoid reflecting the excitation light transmitted by the third light conversion unit 113.

[0134] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A light conversion component, characterized in that: include: A light conversion layer, the light conversion layer comprising a plurality of light conversion units, at least one of the light conversion units being configured to emit conversion light under the excitation of excitation light, the excitation light and the conversion light having different wavelength ranges; The light adjustment layer comprises a first light adjustment layer disposed on one side of at least part of the light conversion unit, wherein a reflection wavelength of the first light adjustment layer at least partially overlaps with a wavelength range of the conversion light of at least part of the light conversion unit.

2. The light conversion component according to claim 1, characterized in that: The light conversion unit includes a first light conversion unit and a second light conversion unit, and the first light adjustment layer is arranged on one side of the first light conversion unit and the second light conversion unit; The first light conversion unit is configured to emit red light under the excitation of the excitation light, and the second light conversion unit is configured to emit green light under the excitation of the excitation light; wherein the reflection wavelength range of the first light adjustment layer at least partially overlaps with at least one of the red light and the green light; Preferably, the first light adjustment layer comprises titanium dioxide film layers and silicon dioxide film layers which are alternately stacked; Preferably, the first light adjustment layer comprises SiN layers with a thickness of 90 nm to 110 nm which are sequentially arranged in a direction away from the light conversion unit. x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x , SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Film layer, SiO with a thickness of 80nm to 100nm x Film layer, SiN with a thickness of 75nm to 95nm x Membrane layer; Preferably, the materials of the first light conversion unit and the second light conversion unit include quantum dot materials.

3. The light conversion assembly according to claim 2, characterized in that: The light conversion component further includes a third light conversion unit, the third light conversion unit is configured to emit blue light under the excitation of the excitation light, the first light adjustment layer is disposed on one side of the first light conversion unit, the second light conversion unit and the third light conversion unit, and the reflection wavelength range of the first light adjustment layer at least partially overlaps with the wavelength range of the conversion light of at least one of the first light conversion unit, the second light conversion unit and the third light conversion unit; Alternatively, the excitation light is blue light, the third light conversion unit is made of a transparent material for transmitting the blue light, and the first light adjustment layer is disposed on one side of the first light conversion unit and the second light conversion unit; Preferably, the excitation light is blue light, the third light conversion unit is made of a transparent material, and the first light adjustment layer is disposed on one side of the first light conversion unit, the second light conversion unit and the third light conversion unit.

4. The light conversion component according to claim 1, characterized in that: The light adjustment layer further includes a second light adjustment layer, the second light adjustment layer is disposed on a side of at least a portion of the light conversion unit away from the first light adjustment layer, and a reflection wavelength range of the second light adjustment layer at least partially overlaps with a wavelength range of the excitation light; Preferably, the light conversion unit includes a first light conversion unit, a second light conversion unit and a third light conversion unit, the third light conversion unit is made of a transparent material and is used to transmit the excitation light, and the second light adjustment layer is arranged on a side of the first light conversion unit and the second light conversion unit away from the first light adjustment layer; Preferably, the excitation light is blue light, and the reflection wavelength range of the second light adjustment layer at least partially overlaps with the blue light; Preferably, the first light adjustment layer and the second light adjustment layer both include a first Bragg reflection layer; The first Bragg reflection layer comprises at least two stacked functional layer groups, each of the functional layer groups comprises two functional layers, and the refractive indexes of two adjacent functional layers are different; Preferably, the material of the functional layer includes TiO2, SiO2, Al2O3, SiO x and SiN x At least two of the following: Preferably, the functional layer group includes a first functional layer and a second functional layer which are stacked, and a thickness d of the functional layer group satisfies the following relationship: △f0 / f0=4arcsin[(n2-n1)÷(n2+n1)] / π d=(2k+1)f0÷4 Wherein, K is a natural number, Δf0 represents the bandwidth of the photonic band gap, f0 represents the band corresponding to the central frequency band of the photonic band gap, n1 represents the refractive index of the first functional layer, n2 represents the refractive index of the second functional layer, and d represents the thickness of the functional layer group.

5. The light conversion component according to claim 1, characterized in that: The light conversion component further includes a filter layer, which is disposed on a side of the light conversion layer away from the first light adjustment layer, and the filter layer includes a plurality of filter units, and the orthographic projection of each filter unit on the light conversion layer at least partially overlaps with the orthographic projection of each light conversion unit on the light conversion layer; Preferably, a light shielding portion is provided between two adjacent filter units; Preferably, an isolation portion is provided between two adjacent light conversion units.

6. A display panel, characterized in that: The light conversion component comprises the light conversion component according to any one of claims 1 to 5.

7. The display panel according to claim 6, characterized in that: The display panel further includes: substrate; A light-emitting layer, disposed on one side of the substrate, and configured to emit the excitation light in a direction away from the substrate; Wherein, the light conversion component is arranged on a side of the light emitting layer away from the substrate, and the first light adjustment layer is located on a side of the light conversion layer facing the light emitting layer; Preferably, a reflective layer is provided on the light-emitting side of the light-emitting layer, and the reflective layer is located between the first light adjustment layer and the light-emitting layer; the reflective layer is configured to reflect part of the excitation light of the light-emitting layer so that the reflected light and the excitation light interfere constructively; Preferably, the reflective layer includes at least one of a second Bragg reflective layer, an encapsulation layer or a light extraction layer; Preferably, the reflective layer includes the light extraction layer, the second Bragg reflective layer and the encapsulation layer which are sequentially arranged in a direction away from the substrate; Preferably, the second Bragg reflection layer comprises at least two stacked functional layer groups, each of which comprises two functional layers, and the refractive indexes of two adjacent functional layers are different; Preferably, the material of the functional layer includes TiO2, SiO2, Al2O3, SiO x and SiN x At least two of the following: Preferably, the excitation light of the light-emitting layer is blue light, and the second Bragg reflection layer comprises SiO2 with a thickness of 95 nm to 115 nm, which is sequentially arranged in a direction away from the light-emitting layer. x Film layer, SiN with a thickness of 55nm to 75nm x Film layer, SiO with a thickness of 30nm to 50nm x Film layer, SiN with a thickness of 140nm to 160nm x Membrane layer.

8. The display panel according to claim 7, characterized in that: The display panel further includes: A pixel definition layer is disposed on one side of the substrate, and the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion; An isolation structure, the isolation structure is arranged on one side of the substrate, the isolation structure encloses an isolation opening, and the isolation opening is connected to the pixel opening; Preferably, the isolation structure is located on a side of the pixel defining portion away from the substrate; Preferably, the isolation structure comprises a first sublayer and a second sublayer, the second sublayer is located on a side of the first sublayer away from the substrate, and an orthographic projection of the first sublayer on the substrate is located within an orthographic projection of the second sublayer on the substrate; Preferably, the light-emitting layer also includes a light-emitting functional layer and a first electrode layer, the light-emitting functional layer is arranged on one side of the substrate, the light-emitting functional layer includes a plurality of light-emitting structures arranged in the pixel opening, the first electrode layer includes a first electrode located on a side of each of the light-emitting structures away from the substrate, and the first electrode is connected to the first sublayer.

9. A display device, characterized in that: A display panel comprising any one of claims 6 to 8.

10. A method for manufacturing a display panel, characterized in that: include: forming a light-emitting layer on one side of the substrate; forming a first light adjustment layer on a side of the light emitting layer away from the substrate; forming a light conversion layer on a side of the first light adjustment layer away from the light emitting layer, the light conversion layer comprising a plurality of light conversion units, at least one of the light conversion units being configured to emit conversion light under the excitation of the excitation light, and the wavelength ranges of the excitation light and the conversion light are different; Wherein, the reflection wavelength of the first light adjustment layer at least partially overlaps with the wavelength range of at least part of the converted light of the light conversion unit.

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