Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a first display area; the first display area comprises a light-emitting element, and the light-emitting element comprises a first electrode and a second electrode which are laminated; the display panel further comprises a first light adjusting structure located in the first display area and located on the side, away from the first electrode, of the second electrode. In the thickness direction of the display panel, the first light adjusting structure and the second electrode are at least partially overlapped; the first light adjusting structure comprises a first adjusting layer and a second adjusting layer which are laminated, and the second adjusting layer is located on the side, away from the second electrode, of the first adjusting layer; the thickness of the first adjusting layer is D1, and the thickness of the second adjusting layer is D2; wherein D1 is larger than or equal to 20 nm and smaller than or equal to 100 nm, D2 is larger than or equal to 20 nm and smaller than or equal to 100 nm, and D1 is larger than D2. According to the display panel, the first light adjusting structure is arranged, the thickness of the first adjusting layer and the thickness of the second adjusting layer are adjusted, the acquisition condition of the display panel on external light is guaranteed, and then the detection precision of the first display area on the external light is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the continuous development of display technology, display panels have been widely used in people's production and life. In order to better meet people's needs, the display panel can be adjusted, for example, the film layer in the display panel can be adjusted to improve the overall effect of the display panel. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device, which improve the optical transmittance of a first display area by providing a first light adjustment structure and adjusting the thickness of a first adjustment layer and the thickness of a second adjustment layer.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, comprising a first display area;

[0005] The first display area includes a light-emitting element, and the light-emitting element includes a first electrode and a second electrode that are stacked;

[0006] The display panel further comprises a first light adjustment structure located in the first display area and located on a side of the second electrode away from the first electrode; along a thickness direction of the display panel, the first light adjustment structure at least partially overlaps with the second electrode;

[0007] The first light adjustment structure comprises a first adjustment layer and a second adjustment layer which are stacked, and the second adjustment layer is located on a side of the first adjustment layer away from the second electrode;

[0008] The thickness of the first adjustment layer is D1, and the thickness of the second adjustment layer is D2; wherein, 20 nm≤D1≤100 nm, 20 nm≤D2≤100 nm, and D1>D2.

[0009] In a second aspect, an embodiment of the present invention provides a display device, including the display panel described in the first aspect;

[0010] The display device further includes a photosensitive element, and the photosensitive element is arranged corresponding to the first display area.

[0011] An embodiment of the present invention provides a display panel, wherein a first light adjustment structure is disposed in a first display area of ​​the display panel, and the first light adjustment structure is located on a side of the second electrode away from the first electrode, and the first light adjustment structure can adjust the light, thereby improving the transmittance of external light. Specifically, the first light adjustment structure includes a first adjustment layer and a second adjustment layer, and the embodiment of the present invention can achieve "transmittance enhancement and reflection reduction" of external light by adaptively adjusting the thickness of the first adjustment layer and the thickness of the second adjustment layer, so that more light can penetrate the first display area, thereby ensuring the detection accuracy of the display panel for external light in the first display area.

[0012] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required to describe the embodiments. Obviously, the drawings introduced are only drawings of a part of the embodiments to be described in the present invention, rather than all the drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of a first cross section along the section line A-A';

[0016] Figure 3 is a schematic diagram of the color gamut of a light-emitting element under a first light adjustment structure with different thicknesses provided by an embodiment of the present invention;

[0017] Figure 4 is a schematic diagram of the color gamut of a second light emitting element under a first light adjustment structure with different thicknesses provided by an embodiment of the present invention;

[0018] Figure 5 is a schematic diagram of the color gamut of a light-emitting element under a third first light adjustment structure with different thicknesses provided by an embodiment of the present invention;

[0019] Figure 6 yes Figure 1 A schematic cross-sectional view along the section line BB';

[0020] Figure 7 yes Figure 1 A second cross-sectional schematic diagram along the section line A-A';

[0021] Figure 8 A color shift trajectory of a display panel at different thicknesses provided by an embodiment of the present invention;

[0022] Fig. 9 yes Figure 1 A third cross-sectional diagram along the section line A-A';

[0023] Fig.10 yes Fig. 9 The first enlarged schematic diagram of the middle area C;

[0024] Fig.11 yes Fig. 9 A second enlarged schematic diagram of the middle area C;

[0025] Fig.12 yes Figure 1 A fourth cross-sectional schematic diagram along the section line A-A';

[0026] Fig.13 is a structural schematic diagram of a display device provided by an embodiment of the present invention;

[0027] Fig.14 yes Fig.13 Schematic diagram of the fourth cross section along the section line CC'. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a system, product or device comprising a series of units is not necessarily limited to those steps or units clearly listed, but may include other units that are not clearly listed or inherent to these products or devices.

[0030] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 2 yes Figure 1 The first cross-sectional diagram along the section line A-A', refer to Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a display panel 10, which includes a first display area AA1; the first display area AA1 includes a light-emitting element 100, and the light-emitting element 100 includes a first electrode 110 and a second electrode 120 that are stacked; the display panel 10 also includes a first light adjustment structure 200 located in the first display area AA1 and located on a side of the second electrode 120 away from the first electrode 110; along the thickness direction of the display panel 10, the first light adjustment structure 200 and the second electrode 120 at least partially overlap; the first light adjustment structure 200 includes a first adjustment layer 210 and a second adjustment layer 220 that are stacked, and the second adjustment layer 220 is located on a side of the first adjustment layer 210 away from the second electrode 120; the thickness of the first adjustment layer 210 is D1, and the thickness of the second adjustment layer 220 is D2; wherein, 20nm≤D1≤100nm, 20nm≤D2≤100nm, and D1>D2.

[0031] Among them, reference Figure 1 and Figure 2 As shown, the display panel 10 includes a first display area AA1, and a plurality of light emitting elements 100 are included in the first display area AA1. The light emitting elements 100 are driven to emit light for display, thereby realizing the display function of the display panel 10 in the first display area AA1.

[0032] Specifically, refer to Figure 2 As shown, the light-emitting element 100 includes a first electrode 110 and a second electrode 120 which are stacked, and the first electrode 110 and the second electrode 120 of the light-emitting element 100 can receive different electrical signals. The light-emitting element 100 also includes a light-emitting layer 130, and the light-emitting layer 130 is located between the first electrode 110 and the second electrode 120 along the thickness direction of the display panel 10. The light-emitting principle of the light-emitting element 100 can be understood as: a certain electrical signal is applied to the first electrode 110 and the second electrode 120 respectively, and the holes from the first electrode 110 and the electrons from the second electrode 120 are gathered in the light-emitting layer 130, and are further excited in the light-emitting layer 130 to emit light, thereby realizing the light-emitting of the light-emitting element 100. Further, in different light-emitting elements 100, light-emitting layers 130 of different colors can be included, so that different light-emitting elements 100 emit light of different colors, thereby realizing the color display effect of the display panel 10. Exemplarily, the light-emitting element 100 can include a red light-emitting element, a blue light-emitting element, a green light-emitting element, etc. Furthermore, there are also various arrangements of the light emitting elements 100 of different colors in the display panel 10 , which will not be described one by one in the embodiment of the present invention.

[0033] Furthermore, the first display area AA1 can be understood as an optical component area. A photosensitive element (not specifically shown in the figure) can be set under the display panel 10 in the first display area AA1. The photosensitive element is used to obtain external light. Exemplarily, the photosensitive element can be an under-screen camera or a fingerprint recognition module, etc. The external light is transmitted to the photosensitive element in the first display area AA1. The photosensitive element works based on the external light. The specific type of the photosensitive element is not limited in the embodiment of the present invention. Among them, reference Figure 2 As shown, if the first display area AA1 is an optical component area, in order to transmit external light to the photosensitive element, it is necessary to design an opening for the light blocking structure on the light exiting side of the display panel 10. The opening can refer to Figure 2 As shown in the middle area m. Figure 2 As shown, the openings provided ensure that the external light is transmitted to the photosensitive element, but also cause part of the external light to be reflected. For example, the light is reflected on the surface of the second electrode 120, so part of the external light will not be transmitted to the photosensitive element due to reflection, which affects the photosensitive element's acquisition of external light as a whole, and reduces the detection accuracy of the display panel 10 for external light.

[0034] In order to prevent the external light from being reflected and thus reducing the detection accuracy of the external light in the first display area AA1, the display panel 10 may add a first light adjustment structure 200 at the first display area AA1. The first light adjustment structure 200 is located on the side of the second electrode 120 away from the first electrode 110, and along the thickness direction of the display panel 10, the first light adjustment structure 200 at least partially overlaps with the second electrode 120. The first light adjustment structure 200 may adjust the light (e.g., external light) transmitted to the display panel 10, on the one hand, ensuring that the external light can be transmitted to the photosensitive element, and on the other hand, reducing the interference of the external light on the overall display caused by the reflection of the second electrode 120. It should be noted that the first display area AA1 is not limited to the optical component area, but may also be other display areas, such as the entire display area of ​​the display panel, and the embodiment of the present invention does not specifically limit this.

[0035] Specifically, refer to Figure 2As shown, the first light adjustment structure 200 includes a first adjustment layer 210 and a second adjustment layer 220, and the second adjustment layer 220 is located on a side of the first adjustment layer 210 away from the second electrode 120. In the first light adjustment structure 200, the first adjustment layer 210 and the second adjustment layer 220 cooperate to adjust the light transmitted to the first light adjustment structure 200. Specifically, taking external light as an example, when the external light is transmitted to the second electrode 120 through the first light adjustment structure 200, the combination of the first adjustment layer 210 and the second adjustment layer 220 can reduce the reflection of the external light on the surface of the second electrode 120, which is equivalent to "reducing the reflection" of the external light, and can prevent the external light from being unable to be transmitted to the photosensitive element due to reflection. At the same time, the combination of the first adjustment layer 210 and the second adjustment layer 220 can ensure the transmittance of the external light, that is, to ensure better transmission of the external light and better acquisition of the external light by the photosensitive element, which is equivalent to "enhancing the transmittance" of the external light. In general, the setting of the first light adjustment structure 200 in the display panel 10 can achieve "transmittance enhancement and reflection reduction" of light in the first display area AA1, that is, enhance the transmittance of external light and reduce the reflectivity of external light, thereby ensuring that the display panel 10 obtains external light, and at the same time can also avoid the reflected external light from interfering with the display luminescence of the display panel 10, thereby ensuring the overall display effect of the display panel 10.

[0036] Furthermore, by adjusting the first adjustment layer 210 and the second adjustment layer 220 to different thicknesses, the light transmitted to the first light adjustment structure 200 can be further adjusted. Wherein, the thickness of the first adjustment layer 210 is D1, the thickness of the second adjustment layer 220 is D2, D1 satisfies: 20nm≤D1≤100nm, D1 can be any value such as 60nm, 75nm, 85nm or 90nm, and the embodiment of the present invention does not specifically limit this; D2 satisfies: 20nm≤D2≤100nm, D2 can be any value such as 30nm, 50nm, 65nm or 70nm, and the specific values ​​of D1 and D2 can be adaptively adjusted according to different display panels 10. Exemplarily, when the first adjustment layer 210 and the second adjustment layer 220 have different thicknesses, the transmission and reflection of the external light by the display panel 10 in the first display area AA1 are shown in the following table:

[0037] No. 1 2 3 4 5 D1(nm) 75 60 85 90 60 D2(nm) 30 50 65 30 70 Re 13.68％ 14.06％ 17.40％ 14.52％ 15.24％ Tr(430nm) 7.90％ 6.78％ 7.53％ 8.12％ 6.56％ Tr(550nm) 44.13％ 44.18％ 40.42％ 43.30％ 42.82％

[0038] In the table, No. indicates different test groups. For example, in No. 1, the thickness D1 of the first adjustment layer 210 is selected as 75 nm, and the thickness of the second adjustment layer 220 is selected as 30 nm. In this test group, the reflectivity Re of the first display area AA1 to external light is 13.68%, the transmittance Tr to 430 nm light is 7.9%, and the transmittance Tr to 550 nm light is 44.13%. In the table, it can be seen that different test groups have different reflection conditions and different transmission conditions for external light by adjusting the thickness D1 of the first adjustment layer 210 and the thickness D2 of the second adjustment layer 220.

[0039] Among them, the thickness of the first adjustment layer 210 and the thickness of the second adjustment layer 220 are both at the nanometer level, which is the same as the wavelength of the external environment light. The external environment light incident on the first light adjustment structure 200 can produce a microcavity effect in the first light adjustment structure 200. Therefore, by reasonably setting and adjusting the thickness of the first adjustment layer 210 and the second adjustment layer 220, constructive interference of light in the first light adjustment structure 200 can be achieved, thereby improving the transmittance of the external environment light. Furthermore, there is an interference effect between the external light and the first adjustment layer 210 and the second adjustment layer 220. By adaptively adjusting the thickness of the first adjustment layer 210 and the second adjustment layer 220, the "transmittance enhancement and reflection reduction" of the external light can be achieved through the interference effect.

[0040] In summary, an embodiment of the present invention provides a display panel, in which a first light adjustment structure capable of adjusting light is arranged in a first display area. Furthermore, the first light adjustment structure also includes a first adjustment layer and a second adjustment layer. The embodiment of the present invention realizes “increasing transmittance and reducing reflection” of external light by adaptively adjusting the thickness of the first adjustment layer and the thickness of the second adjustment layer, so that more light can penetrate the first display area, thereby ensuring the detection accuracy of the display panel for external light in the first display area.

[0041] Continue to refer Figure 1 and Figure 2 As shown, the thickness of the first adjustment layer 210 is D1, and the thickness of the second adjustment layer 220 is D2; wherein, 80nm≤D1+D2≤120nm, and 1<D1 / D2≤2.5.

[0042] Specifically, in the first light adjustment structure 200, the thickness relationship between the first adjustment layer 210 and the second adjustment layer 220 can satisfy: 80nm≤D1+D2≤120nm, which can be understood as the overall thickness of the first light adjustment structure 220 is any value between 80nm and 120nm, which can ensure that the first light adjustment structure 200 can achieve "transmittance enhancement and reflection reduction" of external light, ensure that the display panel 10 can obtain external light, and improve the detection accuracy of the display panel 10 for external light in the first display area AA1.

[0043] Furthermore, the thickness of the first adjustment layer 210 and the thickness of the second adjustment layer 220 in the first light adjustment structure 200 are finely adjusted, wherein D1 and D2 satisfy: 1<D1 / D2≤2.5. This can be understood as the thickness of the first adjustment layer 210 is greater than the thickness of the second adjustment layer 220, and the thickness of the first adjustment layer 210 and the thickness of the second adjustment layer 220 are designed to satisfy a certain thickness relationship ratio, which can ensure that the reflectivity of the display panel 10 to the external light is relatively low, and the transmittance to the external light is relatively high. Exemplarily, in combination with the first adjustment layer 210 and the second adjustment layer 220 at different thicknesses shown above, in the table of transmission and reflection of external light by the display panel 10 in the first display area AA1, when the thickness D1 of the first adjustment layer 210 is 75nm and the thickness D2 of the second adjustment layer 220 is 30nm (satisfying: 1<D1 / D2≤2.5), the reflectivity to external light is relatively low, and at the same time, whether it is 430nm external light or 550nm external light, the transmittance of light is relatively high at this thickness.

[0044] Furthermore, the thickness of the first electrode 110, the second electrode 120 and the light-emitting layer 130 in the light-emitting element 100 are all at the nanometer level, the light generated by the light-emitting element 100 in the light-emitting layer 130 is also at the nanometer level, and the second electrode 120 is generally a semi-transmissive and semi-reflective electrode, and the light emitted by the light-emitting layer 130 can be excited in the microcavity formed between the first electrode 110 and the second electrode 120, and multiple reflections occur. Among them, the thickness of the first adjustment layer 210 and the thickness of the second adjustment layer 220 are both at the nanometer level, and the first adjustment layer 210 and the second adjustment layer 220 can participate in the microcavity modulation of the light emitted by the light-emitting element 100. Specifically, by adjusting the thickness of the first adjustment layer 210 and the thickness of the second adjustment layer 220 reasonably, constructive interference of light in the first light adjustment structure 200 and the light-emitting element 100 can be achieved, and the light-emitting efficiency of the light-emitting element 100 can be further improved.

[0045] For example, Figure 3 is a schematic diagram of the color gamut of a light emitting element under a first light adjustment structure with different thicknesses provided by an embodiment of the present invention, Figure 4 is a schematic diagram of the color gamut of a light emitting element under a first light adjustment structure with different thicknesses provided by an embodiment of the present invention, Figure 5 It is a schematic diagram of the color gamut of the light-emitting element under the first light adjustment structure with different thicknesses provided by the third embodiment of the present invention. Figure 3 It is used to indicate that the color gamut value corresponding to the red light-emitting element when the first adjustment layer 210 and the second adjustment layer 220 are at different thicknesses, which can reflect the luminous efficiency of the red light-emitting element; Figure 4It indicates that when the first adjustment layer 210 and the second adjustment layer 220 are at different thicknesses, the color gamut value corresponding to the green light emitting element can reflect the luminous efficiency of the red light emitting element; Figure 5 It means that when the first adjustment layer 210 and the second adjustment layer 220 are at different thicknesses, the color gamut value corresponding to the blue light emitting element can reflect the luminous efficiency of the red light emitting element. Figures 3 to 5 As shown, when the thickness D1 of the first adjustment layer 210 is 75 nm and the thickness D2 of the second adjustment layer 220 is 30 nm, compared with other film thicknesses, the luminous efficiency of the red light emitting element, the blue light emitting element and the green light emitting element is more balanced (when D1 is 75 nm and D2 is 30 nm, Figures 3 to 5 The corresponding vertical coordinate in the color gamut diagram is located in the middle area).

[0046] Furthermore, corresponding to different thicknesses of the first adjustment layer 210 and the second adjustment layer 220, the white light emitting power of the display panel 10 is shown in the following table:

[0047] No. 1 2 3 4 5 D1(nm) 75 60 85 80 60 D2(nm) 30 50 65 30 30 W 193.2 198.5 194.9 195.4 208.0

[0048] In the table, No. represents different test groups. For example, in No. 1, the thickness D1 of the first adjustment layer 210 is selected as 75 nm, and the thickness of the second adjustment layer 220 is selected as 30 nm. In this test group, the driving current value of white light of the display panel 10 at a specific brightness (for example, 600 nit) can be achieved at a specific brightness value at a smaller driving current value, which reflects that the luminous efficiency of the light-emitting element is relatively high. In the table, according to different test groups, it can be seen that by adjusting the thickness D1 of the first adjustment layer 210 and the thickness D2 of the second adjustment layer 220, the corresponding different current driving values ​​reflect that the display panel has different luminous efficiencies.

[0049] In general, when the thickness D1 of the first adjustment layer 210 and the thickness of the second adjustment layer D2 satisfy: 80nm≤D1+D2≤120nm, 1<D1 / D2<2.5, the “transmittance enhancement and reflection reduction” of external light can be guaranteed, and the detection accuracy of the display panel 10 for external light can be improved. At the same time, the luminous efficiency of the light-emitting element 100 can also be guaranteed, thereby reflecting the overall display effect of the display panel 10.

[0050] Continue to refer Figure 1 and Figure 2 As shown, the refractive index of the first adjustment layer 210 is greater than the refractive index of the second adjustment layer 220 .

[0051] Furthermore, the first adjustment layer 210 and the second adjustment layer 220 may have different refractive indices, so that the first light adjustment structure 200 can adjust the light, thereby improving the acquisition of external light by the display panel 10 in the first display area AA1.

[0052] Specifically, the second adjustment layer 220 is located on the side of the first adjustment layer 210 away from the second electrode 120, and the first adjustment layer 210 and the second adjustment layer 220 can form a microcavity for adjusting the transmission path of external light. Specifically, the refractive index of the first adjustment layer 210 is adjusted to be greater than the refractive index of the second adjustment layer 220, which is equivalent to the first light adjustment structure 200 being a structure composed of a high refractive index film layer and a low refractive index film layer, and by adjusting the thickness of the first adjustment layer 210 and the second adjustment layer 220, the "transmittance enhancement and reflection reduction" of external light can be achieved, ensuring the display panel 10 to obtain external light, and improving the detection accuracy of the display panel 10 to external light.

[0053] Further, by adjusting the first adjustment layer 210 to be located on the side of the second adjustment layer 220 close to the second electrode 120, and setting the first adjustment layer 210 as a film layer with a high refractive index and matching thickness, the luminous efficiency of the light-emitting element 100 can also be improved, thereby ensuring the overall display effect of the display panel 10. Exemplarily, the first adjustment layer 210 can be made of an organic material with a high refractive index, and the second adjustment layer 220 can be made of a metal fluoride, etc. By adjusting the refractive index of the first adjustment layer 210 and the second adjustment layer 220, it is reflected in adjusting the microcavity between the first light adjustment structure 200 and the first electrode 110, which is conducive to improving the luminous efficiency of the light-emitting element 100 and ensuring the overall display effect of the display panel 10.

[0054] Optionally, the refractive index of the first adjustment layer 210 is N1, and the refractive index of the second adjustment layer 220 is N2; wherein, 1.7≤N1≤2.1, 1.2≤N2≤1.5.

[0055] Specifically, the refractive index N1 of the first adjustment layer 210 may satisfy: 1.7≤N1≤2.1, for example, N1 may be any value such as 1.7, 1.9 or 2.0. The refractive index N2 of the second adjustment layer 220 may satisfy: 1.2≤N2≤1.5, for example, N2 may be any value such as 1.2, 1.4 or 1.5.

[0056] In general, the first light adjustment structure 200 adjusts the thickness and refractive index of the first adjustment layer 210 and the second adjustment layer 220 to achieve "transmittance enhancement and reflection reduction" of the external light transmitted to the display panel 10, thereby ensuring that the display panel 10 obtains the external light and improving the detection accuracy of the display panel 10 for the external light.

[0057] Optional, Figure 6 yes Figure 1 A schematic cross-sectional view along the section line B-B', see Figure 1 , Figure 2 and Figure 6 As shown, the display panel 10 also includes a second display area AA2, which is located on at least one side of the first display area AA1, and the second display area AA2 includes a plurality of light-emitting elements 100; the display panel 10 also includes a second light adjustment structure 300 located in the second display area AA2 and located on the side of the second electrode 120 away from the first electrode 110; along the thickness direction of the display panel 10, the second light adjustment structure 300 at least partially overlaps with the second electrode 120; the second light adjustment structure 300 includes a third adjustment layer 310 and a fourth adjustment layer 320 which are stacked, the third adjustment layer 310 and the first adjustment layer 210 are arranged on the same layer, and the fourth adjustment layer 320 and the second adjustment layer 220 are arranged on the same layer.

[0058] Among them, reference Figure 1 As shown, the display panel 10 includes a first display area AA1 and a second display area AA2, and a plurality of light-emitting elements 100 are disposed in the first display area AA1 and the second display area AA2, so as to reflect the whole-surface display effect of the display panel 10. Furthermore, the second display area AA2 is located on at least one side of the first display area AA1, and the relative position relationship between the first display area AA1 and the second display area AA2 can be adaptively adjusted according to the requirements of different display panels 10, and the embodiment of the present invention does not specifically limit this. Exemplarily, the first display area AA1 can be understood as a light component area, and the second display area AA2 can be understood as a normal display area.

[0059] Furthermore, the display panel 10 further includes a second light adjustment structure 300, wherein the second light adjustment structure 300 further includes a third adjustment layer 310 and a fourth adjustment layer 320 which are stacked. Figure 6 As shown, the third adjustment layer 310 is disposed at the same layer as the first adjustment layer 210, and the fourth adjustment layer 320 is disposed at the same layer as the second adjustment layer 220. By adding the third adjustment layer 310 and the fourth adjustment layer 320 at the second display area AA2, it is possible to ensure that the display panel 10 has overall structural flatness in the first display area AA1 and the second display area AA2, thereby ensuring the overall flatness of the display panel 10. At the same time, when preparing the display panel 10, the first light adjustment structure 200 and the second light adjustment structure 300 can also be prepared simultaneously, which can reduce the difficulty of preparation and the process preparation cost of the display panel 10.

[0060] Further, for the first light adjustment structure 200, the first adjustment layer 210 may be a capping layer (CPL). In the area where the capping layer and the light emitting element 100 overlap along the thickness direction of the display panel 10, the capping layer may improve the self-luminous efficiency of the light emitting element 100, thereby improving the display effect of the display panel 10; and the second adjustment layer 220 may be a film layer that cooperates with the first adjustment layer 210 in terms of refractive index and material, such as a lithium fluoride film layer. Among them, the second electrode 120 is generally a semi-transmissive and semi-reflective electrode, and the light emitted by the light emitting layer 130 may form a microcavity effect between the first electrode 110 and the second electrode 120. Specifically, by adjusting the distance between the first electrode 110 and the first light adjustment structure 200, constructive interference of light in the first light adjustment structure 200 and the first electrode 110 may be achieved, thereby improving the self-luminous efficiency of the light emitting element 100 and improving the overall display effect of the display panel 10.

[0061] Therefore, the first light adjustment structure 200 disposed in the first display area AA1 can not only “increase transmittance and reduce reflection” of external light, but also improve the self-luminous effect of the light-emitting element 100 in the first display area AA1, thereby ensuring the overall display effect of the display panel 10. Similarly, the second light adjustment structure 300 disposed in the second display area AA2 is disposed in the same layer as the first light adjustment structure 200, so the second light adjustment structure 300 can also improve the self-luminous efficiency of the light-emitting element 100 in the second display area AA2, thereby ensuring the overall display effect of the display panel 10.

[0062] Figure 7 yes Figure 1 The second cross-sectional diagram along the section line A-A', refer to Figure 1 and Figure 7 As shown, the display panel 10 also includes a packaging structure 400 located on the side of the first light adjustment structure 200 away from the light emitting element 100; the packaging structure 300 includes a first packaging layer 410 close to the side of the first light adjustment structure 200, and the thickness of the first packaging layer 410 is D3, where 100nm<D3<1μm.

[0063] Specifically, refer to Figure 7 As shown, the display panel 10 also includes a packaging structure 400, which is located on a side of the first light adjustment structure 200 away from the light-emitting element 100. The packaging structure 400 covers the first light adjustment structure 200. The packaging structure 400 is used to encapsulate and protect the film layer structure in the display panel 10, thereby improving the stability of the overall structure of the display panel 10.

[0064] Furthermore, the encapsulation structure 300 includes a first encapsulation layer 410 , which is located on one side of the first light adjustment structure 200 . The first encapsulation layer 410 can adjust the light in combination with the first light adjustment structure 200 to ensure that the display panel 10 obtains external light.

[0065] Specifically, the thickness D3 of the first encapsulation layer 410 satisfies: 100nm<D3<1μm, and D3 can be any value such as 150nm, 200nm, 500nm or 800nm, reflecting that the thickness of the first encapsulation layer 410 is also at the nanometer level. By adjusting the thickness of the first encapsulation layer 410, the transmission distance of the external light between the first encapsulation layer 410 and the first adjustment layer 210 also changes adaptively. Therefore, the thickness of the first encapsulation layer 410 can be adjusted to meet the microcavity effect, ensure that the external light can achieve "increase transmittance and reduce reflection", ensure the display panel 10 to obtain the external light, and at the same time improve the detection accuracy of the display panel 10 to the external light.

[0066] Furthermore, by adjusting the thickness of the first encapsulation layer 410, the distance between the first electrode 110 and the first encapsulation layer 410 in the area where the light-emitting element 100 is disposed also changes adaptively, and thus the transmission distance of the light emitted by the light-emitting element 100 between the first electrode 110 and the first encapsulation layer 410 also changes adaptively. By adjusting the microcavity between the first encapsulation layer 410 and the first electrode 110, the light-emitting efficiency of the light-emitting element 100 is improved, and the overall display effect of the display panel 10 is ensured.

[0067] Optional, reference Figure 7 As shown, the encapsulation structure 400 further includes a second encapsulation layer 420 and a third encapsulation layer 430. The second encapsulation layer 420 is located on a side of the first encapsulation layer 410 away from the first light adjustment structure 200, and the third encapsulation layer 430 is located on a side of the second encapsulation layer 420 away from the first encapsulation layer 410. In addition, the first encapsulation layer 410 and the third encapsulation layer 430 may be inorganic encapsulation layers, and the second encapsulation layer 420 may be an organic encapsulation layer. That is, the organic encapsulation layer in the encapsulation structure 400 is covered by the inorganic encapsulation layer. Since the water and oxygen barrier capability of the inorganic encapsulation layer is better than that of the organic encapsulation layer, as shown in FIG. Figure 7 As shown, the packaging structure 400 can prevent water vapor or oxygen from invading the light emitting element 100 arrangement area from the edges of the packaging structure 400 , thereby ensuring the overall structural stability of the display panel 10 .

[0068] Figure 8 is a color deviation track of a display panel at different thicknesses provided by an embodiment of the present invention, and further reference is made to Figure 7 and Figure 8As shown, the light-emitting element 100 includes a first color light-emitting element 100A, a second color light-emitting element 100B and a third color light-emitting element 100C, and the light-emitting colors of the first color light-emitting element 100A, the second color light-emitting element 100B and the third color light-emitting element 100C are different; the first adjustment layer 210 includes a first adjustment section 210A, a second adjustment section 210B and a third adjustment section 210C, along the thickness direction of the display panel 10, the first adjustment section 210A at least partially overlaps with the second electrode 120 of the first color light-emitting element 100A, the second adjustment section 210B at least partially overlaps with the second electrode 120 of the second color light-emitting element 100B, and the third adjustment section 210C at least partially overlaps with the second electrode 120 of the third color light-emitting element 100C; the thickness of the first adjustment section 210A is D11, the thickness of the second adjustment section 210B is D12, and the thickness of the third adjustment section 210C is D14. The thickness of the second adjustment layer 220 is D13; wherein, |D11-D12| / D11≤20%, |D11-D13| / D11≤20%; the second adjustment layer 220 includes a fourth adjustment sub-portion 220A, a fifth adjustment sub-portion 220B and a sixth adjustment sub-portion 220C, along the thickness direction of the display panel 10, the fourth adjustment sub-portion 220A at least partially overlaps with the second electrode 120 of the first color light emitting element 100A, and the fifth adjustment sub-portion 220B overlaps with the second electrode 120 of the second color light emitting element 100A. The second electrode 120 of the color light-emitting element 100B at least partially overlaps, and the sixth adjustment section 220C at least partially overlaps with the second electrode 120 of the third color light-emitting element 100C; the thickness of the fourth adjustment section 220A is D21, the thickness of the fifth adjustment section 220B is D22, and the thickness of the sixth adjustment section 220C is D23; wherein, |D21-D22| / D21≤20%, |D21-D23| / D21≤20%.

[0069] For further reference, Figure 7 As shown, the light emitting element 100 includes a first color light emitting element 100A, a second color light emitting element 100B, and a third color light emitting element 100C. Since the light emitting wavelengths of the first color light emitting element 100A, the second color light emitting element 100B, and the third color light emitting element 100C are all different, the light emitting colors of the first color light emitting element 100A, the second color light emitting element 100B, and the third color light emitting element 100C are also different. The display panel 10 realizes the color display effect of the display panel 10 by driving the light emitting elements 100 of different colors to emit light and display.

[0070] Among them, along the thickness direction of the display panel 10, the first light adjustment structure 200 at least partially overlaps with the light-emitting element 100, and the first light adjustment structure 200 that overlaps with the light-emitting element 100 can participate in the microcavity modulation of the light-emitting element 100, thereby improving the luminous efficiency of the light-emitting element 100, thereby improving the overall display effect of the display panel 10.

[0071] Specifically, refer to Figure 7 As shown, the first adjustment layer 210 includes a first adjustment sub-section 210A, a second adjustment sub-section 210B and a third adjustment sub-section 210C, wherein the first adjustment sub-section 210A is arranged corresponding to the first color light-emitting element 100A, and the arrangement of the first adjustment sub-section 210A can improve the luminous efficiency of the first color light-emitting element 100A. The second adjustment sub-section 210B is arranged corresponding to the second color light-emitting element 100B, and the arrangement of the second adjustment sub-section 210B can improve the luminous efficiency of the second color light-emitting element 100B. The third adjustment sub-section 210C is arranged corresponding to the third color light-emitting element 100C, and the arrangement of the third adjustment sub-section 210C can improve the luminous efficiency of the third color light-emitting element 100C.

[0072] Among them, along the thickness direction of the display panel 10, the thickness of the first adjustment section 210A is D11, and the thickness of the second adjustment section 210B is D12, wherein D11 and D12 satisfy: |D11-D12| / D11≤20%, that is, the values ​​of D11 and D12 are the same or similar, and the thickness of the first adjustment section 210A is the same or similar to the thickness of the second adjustment section 210B. Further, the thickness of the third adjustment section 210C is D13, wherein D11 and D13 satisfy: |D11-D13| / D11≤20%, that is, the values ​​of D11 and D13 are the same or similar, and the thickness of the first adjustment section 210A is the same or similar to the thickness of the third adjustment section 210C. In general, the thickness of the first adjustment section 210A, the thickness of the second adjustment section 210B and the thickness of the third adjustment section 210C are the same or similar, and the thickness of the entire first adjustment layer 210 is balanced.

[0073] For further reference, Figure 7As shown, the second adjustment layer 220 includes a fourth adjustment sub-section 220A, a fifth adjustment sub-section 220B and a sixth adjustment sub-section 220C, wherein the fourth adjustment sub-section 220A is arranged corresponding to the first color light-emitting element 100A, and the arrangement of the first adjustment sub-section 210A and the fourth adjustment sub-section 220A can improve the luminous efficiency of the first color light-emitting element 100A. The fifth adjustment sub-section 220B is arranged corresponding to the second color light-emitting element 100B, and the arrangement of the second adjustment sub-section 210B and the fifth adjustment sub-section 220B can improve the luminous efficiency of the second color light-emitting element 100B. The sixth adjustment sub-section 220C is arranged corresponding to the third color light-emitting element 100C, and the arrangement of the third adjustment sub-section 210C and the sixth adjustment sub-section 220C can improve the luminous efficiency of the third color light-emitting element 100C.

[0074] Among them, along the thickness direction of the display panel 10, the thickness of the fourth adjustment section 220A is D21, and the thickness of the fifth adjustment section 220B is D22, wherein D21 and D22 satisfy: |D21-D22| / D21≤20%, that is, the values ​​of D21 and D22 are the same or similar, and the thickness of the fourth adjustment section 220A is the same or similar to the thickness of the fifth adjustment section 220B. Further, the thickness of the sixth adjustment section 220C is D23, wherein D21 and D23 satisfy: |D21-D23| / D21≤20%, that is, the values ​​of D21 and D123 are the same or similar, and the thickness of the fourth adjustment section 220A is the same or similar to the thickness of the sixth adjustment section 220C. In general, the thickness of the fourth adjustment section 220A, the thickness of the fifth adjustment section 220B, and the thickness of the sixth adjustment section 220C are the same or similar, and the thickness of the entire second adjustment layer 220 is balanced.

[0075] For further reference, Figure 7 As shown, the thickness of the first adjustment layer 210 is balanced in the area where it overlaps with the light emitting elements 100 of different colors, and the thickness of the second adjustment layer 220 is balanced in the area where it overlaps with the light emitting elements 100 of different colors. Therefore, the thickness of the first light adjustment structure 200 as a whole is balanced, which is beneficial to ensure the flatness of the display panel 10 as a whole. Figures 3 to 5 As shown, when the thickness of the first adjustment layer 210 is adjusted to 75 nm and the thickness of the second adjustment layer 220 is adjusted to 30 nm, the luminous efficiency of the light emitting elements 100 of different colors is relatively balanced, and the white light luminous efficiency of the display panel 10 can be improved as a whole. Figure 8As shown, when the thickness of the first adjustment layer 210 is adjusted to 75nm and the thickness of the second adjustment layer 220 is adjusted to 30nm, the distribution of the color trajectory is relatively good and the display effect is optimal. Further, when the overall thickness of the first light adjustment structure 200 is balanced, when preparing the first light adjustment structure 200, the process difficulty can be reduced, and the preparation cost of the display panel 10 can be reduced.

[0076] Fig. 9 yes Figure 1 The third cross-sectional diagram along the section line A-A' is shown in the figure. Fig.10 yes Fig. 9 The first enlarged schematic diagram of area C in the middle, Fig.11 yes Fig. 9 The second enlarged schematic diagram of the middle area C, see Figure 1 , Figures 9 to 11 As shown, the display panel 10 further includes a second electrode patterned structure 500 located in the first display area AA1 and between two adjacent second electrodes 120 ; an overlapping area between the second electrode 120 and the second electrode patterned structure 500 is smaller than a preset area.

[0077] Among them, reference Fig. 9 As shown, the display panel 10 further includes a second electrode patterned structure 500 in the first display area AA1. The second electrode patterned structure 500 can be a transparent material or a material with a high light transmittance. Therefore, the second electrode patterned structure 500 set in the first display area AA1 can ensure that the external light is better transmitted to the photosensitive element, and improve the light transmittance of the display panel 10 in the first display area AA1. Further, the second electrode patterned structure 500 is set between two adjacent second electrodes 120, that is, the area where the second electrode patterned structure 500 is set is not set with the second electrode 120, so the external light reflected in the setting area of ​​the second electrode patterned structure 500 is reduced, thereby weakening the light reflection of the external light in the first display area AA1. The second electrode patterned structure 500 set in the first display area AA1 of the display panel 10 can improve the transmittance of the external light and reduce the reflectivity of the external light, ensure the acquisition of the external light by the display panel 10, and improve the detection accuracy of the external light.

[0078] For further reference, Fig. 9 As shown, the second electrode patterned structure 500 is arranged between two adjacent second electrodes 120, which can also be understood as the second electrode patterned structure 500 is located between two adjacent light-emitting elements 100. The area where the second electrode 120 is arranged is used to realize the preparation of the light-emitting element 100, thereby ensuring the display function of the first display area AA1, and the area where the second patterned structure 500 is arranged is used to improve the transmittance of the area to ensure that external light is transmitted to the photosensitive element.

[0079] Exemplarily, the second electrode patterning structure 500 can be a cathode selection material layer (Cathode Patterning Material, CPM). During the process of preparing the display panel 10, the second electrode patterning structure 500 is prepared before preparing the second electrode 120. The material of the second electrode patterning structure 500 is poorly compatible with the material of the second electrode 120, so the second electrode 120 is no longer set in the area where the second electrode patterning structure 500 has been set, and the second electrode 120 can be set in the area where the second electrode patterning structure 500 is not set.

[0080] When the second electrode 120 is evaporated, the second electrode 120 will not be evaporated in the area where the second electrode patterned structure 500 has been set, so the overlapping area between the second electrode 120 and the second electrode patterned structure 500 is smaller than the preset area. The preset area can be understood as when preparing the second electrode 120 and the second electrode patterned structure 500, it is expected that there may be an overlapping area between the two. However, since the material of the second electrode patterned structure 500 is poorly compatible with the material of the second electrode 120, the overlapping area between the second electrode 120 and the second electrode patterned structure 500 in the prepared display panel 10 will be further reduced. For example, refer to Fig.10 As shown, in the display panel 10, there is no overlapping area between the second electrode patterned structure 500 and the second electrode 120 and the two are basically arranged in contact with each other; or refer to Fig.11 As shown, in the display panel 10 , there is no overlapping area between the second electrode patterned structure 500 and the second electrode 120 and there is a gap between them.

[0081] Continue to refer Figures 9 to 11 As shown, the second electrode patterned structure 500 includes a hydrophobic structure, and the second electrode 120 includes a hydrophilic structure.

[0082] For further reference, Figures 9 to 11 As shown, the second electrode patterned structure 500 includes a hydrophobic structure, and the second electrode 120 includes a hydrophilic structure. The compatibility between the water supply structure and the hydrophilic structure is poor, which can ensure that when the second electrode 120 is evaporated, the area where the second electrode patterned structure 500 has been set does not need to be set with the second electrode 120, so that the second electrode patterned structure 500 is located between two adjacent second electrodes 120, and the overlapping area between the second electrode 120 and the second electrode patterned structure 500 is smaller than the preset area.

[0083] Continue to refer Figure 1 , Figure 2 , Figure 6 , Figure 7 and Fig. 9As shown, the display panel 10 also includes a filter structure 600 and a shading structure 700 located on the side of the first light adjustment structure 200 away from the light-emitting element 100; the filter structure 600 includes a plurality of filter units 610, and the filter units 610 overlap with the light-emitting element 100 along the thickness direction of the display panel 10; the shading structure 700 includes a plurality of shading units 710, and the shading unit 710 is located between two adjacent filter units 610; and a first opening 711 is provided in the shading unit 710, and the first opening passes through the shading unit 710 along the thickness direction of the display panel 10, and the first opening 711 overlaps with the second electrode patterned structure 500.

[0084] Among them, reference Figure 1 , Figure 2 , Figure 6 , Figure 7 and Fig. 9 As shown, the display panel 10 also includes a filter structure 600 and a shading structure 700. The filter structure 600 and the shading structure 700 are located on the side of the first light adjustment structure 200 away from the light-emitting element 100. The filter structure 600 and the shading structure 700 can further adjust the light to enhance the overall display effect of the display panel 10.

[0085] Specifically, refer to Fig. 9 As shown, the filter structure 500 includes a plurality of filter units 610, and the filter units 610 are arranged corresponding to the light emitting elements 100. The filter units 610 can replace the polarizer to reduce the reflection of light and ensure the light emitting effect of the light emitting element 100. The shading structure 700 includes a plurality of shading units 710, and the shading units 710 are located between two adjacent filter units 610. The shading units 710 have the function of blocking light. The shading units 710 can prevent the light emitted by the light emitting elements 100 of different colors from crosstalking with each other, and ensure the overall display effect of the display panel 10.

[0086] For further reference, Fig. 9 As shown, the light shielding unit 710 includes a first opening 711, and the first opening 711 penetrates the light shielding unit 710, and the light is blocked at the setting area of ​​the light shielding unit 710, while the light can continue to be transmitted at the setting area of ​​the first opening 711. Along the thickness direction of the display panel 10, the first opening 711 overlaps with the second electrode patterned structure 500, and the external light can be transmitted to the photosensitive element through the first opening 711 and the second electrode patterned structure 500 in sequence, thereby improving the transmittance of the display panel 10 to the external light.

[0087] Continue to refer Fig. 9As shown, the display panel 10 also includes a light-shielding pixel defining layer 800 located on the side of the first electrode 110 close to the second electrode 120, and a second opening 810 and a third opening 820 are provided in the light-shielding pixel defining layer 800; along the thickness direction of the display panel 10, the second opening 810 overlaps with the first electrode 110 and exposes at least a portion of the first electrode 120, and the third opening 820 overlaps with the second electrode patterned structure 500.

[0088] Among them, the display panel 10 also includes a light-shielding pixel defining layer 800, which includes a second opening 810 and a third opening 820. The light-shielding pixel defining layer 800 has a light-blocking function, so light can continue to be transmitted in the area where the second opening 810 is set and the area where the third opening 820 is set, and light is blocked in the area where no opening is set.

[0089] Specifically, refer to Fig. 9 As shown, along the thickness direction of the display panel 10, the second opening 810 overlaps with the first electrode 110 and exposes part of the first electrode 110, so the second opening 810 can be understood as a pixel opening. The light-emitting element 100 emits its own light through the second opening 810, thereby realizing the display function of the display panel 10. Along the thickness direction of the display panel 10, the third opening 820 overlaps with the second electrode patterned structure 500, and external light can be transmitted to the photosensitive element through the first opening 711, the second electrode patterned structure 500 and the third opening 820 in sequence, thereby improving the transmittance of the display panel 10 to external light.

[0090] Fig.12 yes Figure 1 The fourth cross-sectional diagram along the section line A-A', refer to Figure 1 and Fig.12 As shown, the display panel 10 also includes a driving circuit 1000 located on a side of the light-emitting element 100 away from the first light adjustment structure 200, and the driving circuit 1000 is electrically connected to the first electrode 110; the display panel 10 also includes an isolation structure 900, and the film layer where the isolation structure 900 is located is located between the film layer where the second electrode 120 is located and the driving circuit 1000, and along the thickness direction of the display panel 10, the isolation structure 900 covers the second electrode patterned structure 500 and at least partially overlaps with the second electrode 120.

[0091] Among them, reference Fig.12As shown, the display panel 10 further includes a driving circuit 1000, and the driving circuit 1000 is electrically connected to the first electrode 110 of the light-emitting element 100. The driving circuit 1000 can provide a driving current for the light-emitting element 100, thereby driving the light-emitting element 100 to perform light-emitting display, and realize the display function of the display panel 10. Further, the driving circuit 110 may include a transistor, and the transistor may include an active layer 1001, a gate 1002, a source 1003, and a drain 1004. In addition, the setting mode of the driving circuit 1000 is diverse, for example, it can be "7T1C", "8T2C", etc., where "T" represents a transistor and "C" represents a capacitor. The specific setting mode of the driving circuit 110 can be adaptively adjusted according to different display panels 10, and the embodiment of the present invention does not specifically limit this.

[0092] Furthermore, the display panel 10 also includes an isolation structure 900, which is insulating. The isolation structure 900 can ensure the stable transmission of electrical signals in the display panel 10. In the first display area AA1, in order to ensure that external light is transmitted to the photosensitive element, the material of the wiring in the driving circuit 1000 and the material of the metal film layer can be indium tin oxide or other transparent conductive materials. In this case, along the thickness direction of the display panel 10, the wiring or metal film layer in the driving circuit 1000 can overlap with the second electrode patterned structure 500, which can also be understood as the overlap between the driving circuit 1000 and the light-transmitting area. The driving circuit 1000 will not block the transmission of external light, ensuring that the photosensitive element can obtain external light. In this way, by setting the isolation structure 900, it is possible to avoid interference with other signals in the light-transmitting area away from the driving circuit 1000, thereby improving the overall stability of the display panel 10.

[0093] Furthermore, in order to improve transmittance, a driving circuit 1000 may be used in the first display area AA1 to drive multiple light-emitting elements 100. Therefore, in order to avoid interference between the conductive film layer (such as the second electrode 120) in the light-emitting element 100 and the conductive film layer of the driving circuit 1000, an isolation structure 900 may be provided between the second electrode 120 and the driving circuit 1000 to ensure the stability of the transmission of the electrical signal in the display panel 10 and the overall display effect of the display panel 10.

[0094] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Fig.13 is a schematic structural diagram of a display device provided by an embodiment of the present invention, Fig.14 yes Fig.13 The fourth cross-sectional diagram along the section line C-C' is shown in FIG. Fig.13 and Fig.14As shown, the display device 1 includes the display panel 10 described in any of the above embodiments. Therefore, the display device 1 provided in the embodiment of the present invention has the corresponding beneficial effects of the display panel 10 in the above embodiments, which will not be repeated here. Among them, the display device 1 also includes a photosensitive element 20. The photosensitive element 20 is used to obtain external light. Exemplarily, the photosensitive element 20 can be an under-screen camera or a fingerprint recognition module, etc., which transmits external light to the photosensitive element 20 in the first display area AA1, and the photosensitive element 20 works based on the external light. Furthermore, the display device 1 can be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and a vehicle-mounted display device.

[0095] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: comprising a first display area; The first display area includes a light-emitting element, and the light-emitting element includes a first electrode and a second electrode that are stacked; The display panel further comprises a first light adjustment structure located in the first display area and located on a side of the second electrode away from the first electrode; along a thickness direction of the display panel, the first light adjustment structure at least partially overlaps with the second electrode; The first light adjustment structure comprises a first adjustment layer and a second adjustment layer which are stacked, and the second adjustment layer is located on a side of the first adjustment layer away from the second electrode; The thickness of the first adjustment layer is D1, and the thickness of the second adjustment layer is D2; wherein, 20 nm≤D1≤100 nm, 20 nm≤D2≤100 nm, and D1>D2.

2. The display panel according to claim 1, characterized in that: The thickness of the first adjustment layer is D1, and the thickness of the second adjustment layer is D2; Among them, 80nm≤D1+D2≤120nm, 1<D1 / D2≤2.

5.

3. The display panel according to claim 1, characterized in that: The refractive index of the first adjustment layer is greater than the refractive index of the second adjustment layer.

4. The display panel according to claim 1, characterized in that: The refractive index of the first adjustment layer is N1, and the refractive index of the second adjustment layer is N2; Among them, 1.7≤N1≤2.1, 1.2≤N2≤1.

5.

5. The display panel according to claim 1, characterized in that: The display panel further comprises a packaging structure located on a side of the first light adjustment structure away from the light emitting element; The packaging structure includes a first packaging layer close to a side of the first light adjustment structure, and the thickness of the first packaging layer is D3, wherein 100 nm<D3<1 μm.

6. The display panel according to claim 1, characterized in that: The light-emitting elements include a first color light-emitting element, a second color light-emitting element and a third color light-emitting element, and the light-emitting colors of the first color light-emitting element, the second color light-emitting element and the third color light-emitting element are different; The first adjustment layer includes a first adjustment section, a second adjustment section and a third adjustment section. Along the thickness direction of the display panel, the first adjustment section at least partially overlaps with the second electrode of the first color light-emitting element, the second adjustment section at least partially overlaps with the second electrode of the second color light-emitting element, and the third adjustment section at least partially overlaps with the second electrode of the third color light-emitting element; The thickness of the first adjustment section is D11, the thickness of the second adjustment section is D12, and the thickness of the third adjustment section is D13; wherein |D11-D12| / D11≤20%, |D11-D13| / D11≤20%; The second adjustment layer includes a fourth adjustment section, a fifth adjustment section, and a sixth adjustment section. Along the thickness direction of the display panel, the fourth adjustment section at least partially overlaps with the second electrode of the first color light-emitting element, the fifth adjustment section at least partially overlaps with the second electrode of the second color light-emitting element, and the sixth adjustment section at least partially overlaps with the second electrode of the third color light-emitting element; The thickness of the fourth adjustment section is D21, the thickness of the fifth adjustment section is D22, and the thickness of the sixth adjustment section is D23; wherein, |D21-D22| / D21≤20%, |D21-D23| / D21≤20%.

7. The display panel according to claim 1, characterized in that: The display panel further includes a second electrode patterned structure located in the first display area and between two adjacent second electrodes; An overlapping area between the second electrode and the second electrode patterned structure is smaller than a preset area.

8. The display panel according to claim 7, characterized in that: The second electrode patterned structure includes a hydrophobic structure, and the second electrode includes a hydrophilic structure.

9. The display panel according to claim 7, characterized in that: The display panel further comprises a light filtering structure and a light shielding structure located on a side of the first light adjustment structure away from the light emitting element; The filter structure comprises a plurality of filter units, and along the thickness direction of the display panel, the filter units overlap with the light emitting elements; The shading structure includes a plurality of shading units, each of which is located between two adjacent filter units; and a first opening is provided in the shading unit, and the first opening penetrates the shading unit along the thickness direction of the display panel, and the first opening overlaps with the second electrode patterned structure.

10. The display panel according to claim 7, characterized in that: The display panel further includes a light-shielding pixel defining layer located on a side of the first electrode close to the second electrode, and the light-shielding pixel defining layer is provided with a second opening and a third opening; Along the thickness direction of the display panel, the second opening overlaps with the first electrode and exposes at least a portion of the first electrode, and the third opening overlaps with the second electrode patterned structure.

11. The display panel according to claim 10, characterized in that: The display panel further comprises a driving circuit located on a side of the light emitting element away from the first light adjustment structure, wherein the driving circuit is electrically connected to the first electrode; The display panel further includes an isolation structure, wherein the film layer where the isolation structure is located is located between the film layer where the second electrode is located and the driving circuit, and along the thickness direction of the display panel, the isolation structure covers the second electrode patterned structure and at least partially overlaps with the second electrode.

12. The display panel according to claim 1, characterized in that: The display panel further includes a second display area, the second display area is located at at least one side of the first display area, and the second display area includes a plurality of the light-emitting elements; The display panel further comprises a second light adjustment structure located in the second display area and located on a side of the second electrode away from the first electrode; along the thickness direction of the display panel, the second light adjustment structure at least partially overlaps with the second electrode; The second light adjustment structure includes a third adjustment layer and a fourth adjustment layer which are stacked. The third adjustment layer is arranged on the same layer as the first adjustment layer, and the fourth adjustment layer is arranged on the same layer as the second adjustment layer.

13. A display device, characterized in that: A display panel comprising any one of claims 1 to 12; The display device further includes a photosensitive element, and the photosensitive element is arranged corresponding to the first display area.

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