Display panel and display device

Abstract

This application relates to a display panel and a display device. The display panel includes a substrate, a light-emitting functional layer, a light extraction layer, and a first functional layer. The light-emitting functional layer is disposed on one side of the substrate and includes multiple light-emitting structures. The light extraction layer is disposed on the side of the light-emitting functional layer facing away from the substrate, and the orthographic projection of the light extraction layer onto the substrate overlaps with the orthographic projection of the multiple light-emitting structures onto the substrate. The first functional layer is in contact with the light extraction layer and together they form an anti-reflection film layer. The anti-reflection film layer includes a first surface facing the substrate and a second surface facing away from the substrate, and at least a portion of the light reflected through the first surface and the second surface can interfere destructively. The display panel and display device provided in the embodiments of this application have good display effects.

Description

Technical Field

[0001] This application relates to the field of display device technology, and more particularly to a display panel and display device. Background Technology

[0002] Display panels are an indispensable key component in modern electronic devices, and are widely used in various fields such as consumer electronics, industrial equipment, automotive electronics, and medical devices.

[0003] In a display panel, the transmittance and reflectance of the relevant film layers directly affect the display effect. Summary of the Invention

[0004] The display panel and display device provided in this application embodiment have good display effects.

[0005] In a first aspect, embodiments of this application provide a display panel, including a substrate, a light-emitting functional layer, a light extraction layer, and a first functional layer. The light-emitting functional layer is disposed on one side of the substrate and includes multiple light-emitting structures. The light extraction layer is disposed on the side of the light-emitting functional layer facing away from the substrate, and the orthographic projection of the light extraction layer onto the substrate overlaps with the orthographic projection of the multiple light-emitting structures onto the substrate. The first functional layer is in contact with the light extraction layer and together constitutes an anti-reflection film layer, which includes a first surface facing the substrate and a second surface facing away from the substrate, wherein at least a portion of the light reflected through the first surface and the second surface can interfere destructively.

[0006] Secondly, embodiments of this application provide a display device, including the display panel provided in the first aspect of this application.

[0007] According to the display panel and display device provided in this application, the display panel includes a substrate, a light-emitting functional layer, a light extraction layer, and a first functional layer. The relevant structures in the substrate and the light-emitting functional layer cooperate with each other to emit self-emissive light from the display panel. The light extraction layer can adjust the self-emissive light in the display panel to optimize the display effect. The light extraction layer and the first functional layer together constitute an anti-reflection coating layer, allowing the anti-reflection coating layer to utilize the thickness of the original related coating layers of the display panel, thereby reducing the overall thickness of the display panel. The anti-reflection coating layer includes a first surface facing the substrate and a second surface facing away from the substrate, and at least a portion of the light reflected through the first and second surfaces can interfere destructively. The light extraction layer can provide additional optical path control for light passing through it, causing different light rays to produce random phase distributions. Different light rays can undergo a certain degree of diffuse reflection. The diffuse reflected light can undergo multiple round trips in the first functional layer. Based on the precise design of the thickness of the first functional layer, deterministic phase compensation can be provided. The probability of introducing a phase difference during each round trip of the diffuse reflected light is increased, thereby increasing the probability that two different reflected light rays have opposite phases. This increases the probability of interference cancellation between different reflected light rays, resulting in high anti-reflection efficiency to ensure the display effect of the display panel. Attached Figure Description

[0008] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0009] Figure 1 This application provides a schematic diagram of the structure of a display panel according to some embodiments; Figure 2 for Figure 1 First sectional view of the structure at point AA; Figure 3 for Figure 1 Second sectional view of the structure at point AA; Figure 4 for Figure 1 Third sectional view of the structure at point AA; Figure 5 for Figure 1 Cross-sectional view of the structure at point BB; Figure 6 for Figure 1 Fourth sectional view of the structure at point AA; Figure 7 for Figure 1 Fifth sectional view of the structure at point AA; Figure 8 for Figure 1 The sixth sectional view of the structure at point AA; Figure 9 This is a schematic diagram of the structure of a display device provided in some embodiments of this application.

[0010] Marker explanation: 100. Display panel; 200. Display device; 10. Substrate; 20. Light-emitting functional layer; 21. Light-emitting structure; 211. First light-emitting structure; 212. Second light-emitting structure; 30. Optical extraction layer; 40. First functional layer; 41. First functional unit; 42. Dimming pattern; 421. First dimming pattern; 422. Second dimming pattern; 50. Pixel definition layer; 51. Pixel limiting part; 52. Pixel opening; 60. Encapsulation layer; 61. First inorganic layer; 62. Organic layer; 63. Second inorganic layer; 70. Filter layer; 71. Filter section; 72. Shielding section; 80. First electrode layer; 81. First electrode section; 90. Second functional layer; C1, Antireflective coating; M1, first surface; M2, second surface; Q1, Zone 1; Q2, Zone 2; Z, thickness direction.

[0011] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0012] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0013] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0014] In display panels, the transmittance and reflectance of the relevant film layers directly affect the display effect. During the display process, the light emitted by the display panel includes not only the light emitted by its internal light-emitting units, but also the reflected light formed by ambient light incident on its interior. In order to improve the display effect, it is necessary to reduce the impact of the reflected light formed by ambient light incident on the light emitted by the light-emitting units in the panel.

[0015] In view of this, firstly, please refer to Figure 1 and Figure 2 This application provides a display panel 100, including a substrate 10, a light-emitting functional layer 20, a light extraction layer 30, and a first functional layer 40. The light-emitting functional layer 20 is disposed on one side of the substrate 10 and includes a plurality of light-emitting structures 21. The light extraction layer 30 is disposed on the side of the light-emitting functional layer 20 facing away from the substrate 10, and the orthographic projection of the light extraction layer 30 onto the substrate 10 overlaps with the orthographic projection of the plurality of light-emitting structures 21 onto the substrate 10. The first functional layer 40 is in contact with the light extraction layer 30 and together they form an anti-reflection film layer C1. The anti-reflection film layer C1 includes a first surface M1 facing the substrate 10 and a second surface M2 facing away from the substrate 10, and at least a portion of the light reflected through the first surface M1 and the second surface M2 can interfere destructively.

[0016] In this embodiment, the display panel 100 includes a substrate 10, a light-emitting functional layer 20, a light extraction layer 30, and a first functional layer 40. The relevant structures in the substrate 10 and the light-emitting functional layer 20 cooperate to emit self-emissive light from the display panel 100. The light extraction layer 30 can adjust the self-emissive light in the display panel 100 to optimize the display effect. Furthermore, the light extraction layer 30 and the first functional layer 40 together form an anti-reflection film layer C1 to reduce the probability of ambient light incident on the display panel 100 and reflected light emanating into the external environment. This reduces the impact of ambient light incident on the self-emissive light in the display panel 100, ensuring the display effect of the display panel 100.

[0017] Specifically, the substrate 10 is the structure of the display panel 100 used to support other film layers. The substrate 10 may include multiple film layer structures. For example, the substrate 10 may include stacked semiconductor layers, multiple conductor layers, and insulating layers located between adjacent conductor layers or between adjacent conductor layers and semiconductor layers. The specific composition of the film layer structures inside the substrate 10 is not limited in this embodiment. The multiple film layer structures inside the substrate 10 and the multiple film layer structures located outside the substrate 10 are all stacked along the thickness direction Z of the substrate 10. The thickness directions Z of different film layer structures, the thickness direction Z of the display panel 100, and the thickness direction Z of the substrate 10 can be arranged parallel to each other. For ease of understanding, the thickness directions Z of different film layer structures, the thickness direction Z of the display panel 100, and the thickness direction Z of the substrate 10 are all shown in the same direction in the accompanying drawings.

[0018] A light-emitting functional layer 20 is disposed on one side of the substrate 10, and the light-emitting functional layer 20 includes a plurality of light-emitting structures 21. The display panel 100 also includes a first electrode layer 80 disposed on the side of the light-emitting functional layer 20 opposite to the substrate 10, and the first electrode layer 80 covers the plurality of light-emitting structures 21. Semiconductor layers, a plurality of conductor layers, and insulating layers located between adjacent different conductor layers or between adjacent conductor layers and semiconductor layers are stacked in the substrate 10 to form a corresponding array circuit. The light-emitting structures 21 and the first electrode layer 80 are electrically connected to the array circuit, and the first electrode layer 80 may be a cathode layer. The integrated circuit in the display panel 100 transmits relevant signals to the light-emitting structures 21 and the first electrode layer 80 through the array circuit to control the light emission of the light-emitting structures 21 and realize the display effect of the display panel 100.

[0019] In the display panel 100 provided in this embodiment, multiple light-emitting structures 21 are provided, all of which are located inside the display area. The orthographic projections of the multiple light-emitting structures 21 on the substrate 10 are spaced apart, and at least some of the different light-emitting structures 21 emit light of different colors to meet the multi-color display requirements of the display panel 100. Optionally, the multiple light-emitting structures 21 include at least one of a red light-emitting structure 21 for emitting red light, a blue light-emitting structure 21 for emitting blue light, and a green light-emitting structure 21 for emitting green light.

[0020] The display panel 100 also includes a pixel definition layer 50 disposed on the side of the light-emitting functional layer 20 facing the substrate 10. The pixel definition layer 50 includes a pixel limiting portion 51 and a pixel opening 52 formed by the pixel limiting portion 51. The light-emitting structure 21 is located inside the pixel opening 52. The pixel limiting portion 51 can enclose the light-emitting structure 21 located inside the pixel opening 52 to reduce the interference between adjacent light-emitting structures 21, thereby improving the display effect of the display panel 100.

[0021] The light extraction layer 30 is disposed on the side of the light-emitting functional layer 20 away from the substrate 10. The orthographic projection of the light extraction layer 30 on the substrate 10 overlaps with the orthographic projection of the multiple light-emitting structures 21 on the substrate 10. When the light-emitting structure 21 in the light-emitting functional layer 20 emits light, the light emitted by the light-emitting structure 21 can pass through the light extraction layer 30. The light extraction layer 30 can use micro-nano structures to disrupt the total internal reflection condition of the light emitted by the light-emitting structure 21 inside the display panel 100, so that as much of the light emitted by the light-emitting structure 21 as possible is emitted to the outside of the display panel 100, thereby improving the extraction rate of the light emitted by the light-emitting structure 21. The light extraction layer 30 can make certain adjustments to the light emitted by the light-emitting structure 21, thereby improving the display effect of the display panel 100.

[0022] In related technologies, in order to reduce the impact of ambient light incident on the interior of the display panel 100 and the reflected light formed on the self-emissive light in the display panel 100, an additional anti-reflection layer is usually set separately near the cover plate on the basis of the original structural film layer in the display panel 100. The setting of this anti-reflection layer not only increases the overall thickness of the display panel 100 in terms of structure, but also, in the path of light propagation, the anti-reflection layer only has a change in refractive index with the adjacent layer structure on its upper and lower surface. It can only achieve the anti-reflection effect for light of a preset wavelength at a preset incident angle, with low freedom of phase control of light and low anti-reflection efficiency.

[0023] To ensure the performance of the antireflective coating layer C1 in the display panel 100 and minimize the overall thickness of the display panel 100, in this embodiment, the first functional layer 40 and the light extraction layer 30 are disposed in contact, and the two together constitute the antireflective coating layer C1. The antireflective coating layer C1 includes a first surface M1 facing the substrate 10 and a second surface M2 facing away from the substrate 10. At least a portion of the light reflected through the first surface M1 and the second surface M2 can interfere destructively. During light propagation, due to the wave nature of light, when reflected light occurring at two locations has opposite phases, the reflected light occurring at the two locations can interfere destructively. The principle of light interference destructiveness can be understood with reference to relevant technologies and will not be elaborated further in this embodiment.

[0024] In this embodiment, the light extraction layer 30 can adjust the light emitted by the light-emitting structure 21 in the display panel 100, and also adjust the portion of reflected light from ambient light entering the display panel 100 that passes through the light extraction layer 30. The light extraction layer 30 can provide additional optical path control, scattering the passing light and causing different light rays to have random phase distributions. Different light rays have a certain degree of diffuse reflection, and the diffuse reflected light can undergo multiple round trips in the first functional layer 40. Based on the precise design of the thickness of the first functional layer 40, deterministic phase compensation can be provided. The probability of introducing a phase difference during each round trip of the diffuse reflected light is increased, thereby increasing the probability of two different reflected lights having opposite phases, and thus increasing the probability of interference cancellation between different reflected lights, resulting in high anti-reflection efficiency to ensure the display effect of the display panel 100. At the same time, the anti-reflection film layer C1 is jointly composed of the first functional layer 40 and the light extraction layer 30, and can utilize the thickness of the original related film layers of the display panel 100, thereby reducing the overall thickness of the display panel 100.

[0025] In summary, in this embodiment, the display panel 100 includes a substrate 10, a light-emitting functional layer 20, a light extraction layer 30, and a first functional layer 40. The relevant structures in the substrate 10 and the light-emitting functional layer 20 cooperate with each other to emit self-emissive light from the display panel 100. The light extraction layer 30 can adjust the self-emissive light in the display panel 100 to optimize the display effect of the display panel 100. The light extraction layer 30 and the first functional layer 40 together constitute an anti-reflection film layer C1, which allows the anti-reflection film layer C1 to utilize the thickness of the original relevant film layers of the display panel 100, thereby reducing the overall thickness of the display panel 100. The anti-reflection film layer C1 includes a first surface M1 facing the substrate 10 and a second surface M2 facing away from the substrate 10. At least a portion of the light reflected through the first surface M1 and the second surface M2 can interfere destructively. The light extraction layer 30 can provide additional optical path control for the light passing through it, so that different light rays produce random phase distribution and different light rays can undergo a certain degree of diffuse reflection. The diffuse reflected light can undergo multiple round trips in the first functional layer 40. Based on the precise design of the thickness of the first functional layer 40, deterministic phase compensation can be provided. The probability of introducing a phase difference is increased in each round trip of the diffuse reflected light, so as to increase the probability that two different reflected lights have opposite phases, thereby increasing the probability of interference cancellation between different reflected lights, with high anti-reflection efficiency to ensure the display effect of the display panel 100.

[0026] In some embodiments, please refer to Figure 1 and Figure 2 The first functional layer 40 and the light extraction layer 30 are arranged in contact with the surface opposite to the substrate 10.

[0027] In order to ensure the extraction effect of the light extraction layer 30 on the light-emitting structure 21, the light extraction layer 30 is set on the side close to the light-emitting structure 21, so as to facilitate the efficient extraction of the self-emitted light of the light-emitting structure 21 in the display panel 100 by the light extraction layer 30, thereby improving the emission rate of the self-emitted light of the light-emitting structure 21.

[0028] The first functional layer 40 is disposed on the side of the light extraction layer 30 away from the substrate 10. During the incident process of ambient light, the ambient light first passes through the first functional layer 40 and undergoes a first reflection at the first surface M1. Then it passes through the light extraction layer 30 and undergoes a second reflection at the second surface M2. This enables the reflected light of the first reflection to have a relatively definite phase. The reflected light of the second reflection, after being adjusted by the light extraction layer 30, can generate a random phase distribution, thereby increasing the probability that the two different reflected lights have opposite phases, and thus increasing the probability that the different reflected lights will interfere and cancel each other out.

[0029] In some embodiments, please refer to Figure 1 and Figure 3The display panel 100 also includes an encapsulation layer 60 on the side of the first functional layer 40 facing away from the substrate 10, wherein the orthographic projection of the first functional layer 40 on the substrate 10 overlaps with the orthographic projection of the encapsulation layer 60 on the substrate 10.

[0030] In order to improve the reliability of the anti-reflective coating layer C1 and ensure the display effect of the display panel 100, the anti-reflective coating layer C1 is set inside the encapsulation layer 60. The encapsulation layer 60 forms an encapsulation protection for the anti-reflective coating layer C1, reducing the influence of moisture in the external environment on the anti-reflective coating layer C1, thereby ensuring the performance of the anti-reflective coating layer C1.

[0031] By placing the antireflective coating layer C1 inside the encapsulation layer 60, the antireflective coating layer C1 can also be positioned close to the light-emitting functional layer 20 to ensure the light extraction layer 30 effectively extracts the light emitted by the light-emitting structure 21. To ensure the encapsulation effect of the encapsulation layer 60 on the light-emitting structure 21 and the antireflective coating layer C1, the encapsulation layer 60 includes a first inorganic layer 61, an organic layer 62, and a second inorganic layer 63 stacked sequentially along the thickness direction Z. Through the stacked structure of the first inorganic layer 61, the organic layer 62, and the second inorganic layer 63, a multi-layer encapsulation effect is formed on the light-emitting structure 21 and the antireflective coating layer C1.

[0032] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The refractive index of the first functional layer 40 is less than that of the light extraction layer 30. And / or, the thickness of the first functional layer 40 is H1, where H1 ≤ 200 nm.

[0033] To improve the transmittance of the self-emitted light from the light-emitting structure 21 in the display panel 100, the refractive index of the first functional layer 40 is set to be less than that of the light extraction layer 30. By utilizing the step-like refractive index difference formed by the first functional layer 40 between the light extraction layer 30 and the external environment, the abrupt change in refractive index between the light extraction layer 30 and the external environment is reduced, thereby reducing the degree of light reflection at the interface and increasing the probability of the self-emitted light from the light-emitting structure 21 in the display panel 100 passing through the anti-reflection film layer C1, so as to ensure the display effect of the display panel 100.

[0034] Considering that the antireflective coating layer C1 also includes a light extraction layer 30, the thickness of the first functional layer 40 can be reduced based on the thickness of the light extraction layer 30 itself, so as to ensure the transmittance of the first functional layer 40, thereby increasing the probability of the self-emitted light of the light-emitting structure 21 in the display panel 100 passing through the antireflective coating layer C1, so as to ensure the display effect of the display panel 100.

[0035] In some embodiments, please refer to Figure 1 and Figure 4The display panel 100 also includes a light filter layer 70 disposed on the side of the light extraction layer 30 facing away from the substrate 10. The light filter layer 70 includes a plurality of light filter portions 71 corresponding to the plurality of light-emitting structures 21 respectively. The orthographic projection of the first functional layer 40 onto the substrate 10 overlaps with the orthographic projection of the plurality of light filter portions 71 onto the substrate 10.

[0036] To further enhance the display effect of the display panel 100, the display panel 100 includes a light filter layer 70 disposed on the side of the light extraction layer 30 facing away from the substrate 10. The light filter layer 70 can further adjust the light passing through the light extraction layer 30. The light filter layer 70 includes a plurality of filter portions 71 corresponding to a plurality of light-emitting structures 21. The plurality of filter portions 71 are all located inside the display area. The orthographic projections of the plurality of filter portions 71 on the substrate 10 are spaced apart. At least some of the different filter portions 71 correspond to allow light of different colors to pass through, thereby enhancing the multi-color display effect of the display panel 100. Optionally, the plurality of filter portions 71 include at least one of a red filter portion 71 for allowing red light to pass through, a blue filter portion 71 for allowing blue light to pass through, and a green filter portion 71 for allowing green light to pass through. Further, the light filter layer 70 also includes a light-shielding portion 72 disposed between adjacent filter portions 71. The light-shielding portion 72 can block light at corresponding positions to reduce the influence between light in adjacent filter portions 71.

[0037] The light extraction layer 30 and the first functional layer 40 constitute an antireflection film layer C1. The orthographic projection of the first functional layer 40 on the substrate 10 overlaps with the orthographic projection of the multiple light filter parts 71 on the substrate 10. The orthographic projection of the light extraction layer 30 on the substrate 10 overlaps with the orthographic projection of the multiple light filter parts 71 on the substrate 10. So that the light adjustment effect of the antireflection film layer C1 and the light adjustment effect of the light filter layer 70 are superimposed on the light propagation path. While reducing the influence of ambient light incident into the interior of the display panel 100 and the reflected light formed on the self-emitted light in the display panel 100, the self-emitted light in the display panel 100 is filtered to a certain extent, thereby further improving the display effect of the display panel 100.

[0038] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 5 The display panel 100 also includes a first electrode layer 80 disposed between the light-emitting functional layer 20 and the light extraction layer 30. The orthographic projection of the first electrode layer 80 onto the substrate 10 overlaps with the orthographic projection of the plurality of light-emitting structures 21 onto the substrate 10. The first functional layer 40 includes a conductive material, and the first functional layer 40 and the first electrode layer 80 are disposed in parallel.

[0039] The first electrode layer 80 can be a cathode layer. The first electrode layer 80 is disposed on the side of the light-emitting functional layer 20 away from the substrate 10. The orthogonal projection of the first electrode layer 80 on the substrate 10 overlaps with the multiple light-emitting structures 21 on the substrate 10. The semiconductor layer, multiple conductor layers, and insulating layers located between adjacent conductor layers or between adjacent conductor layers and semiconductor layers stacked in the substrate 10 form a corresponding array circuit. The light-emitting structures 21 and the first electrode layer 80 are electrically connected to the array circuit. The integrated circuit in the display panel 100 transmits relevant signals to the light-emitting structures 21 and the first electrode layer 80 through the array circuit to control the light emission of the light-emitting structures 21 and realize the display effect of the display panel 100.

[0040] In related technologies, the first electrode layer 80 is typically a single, continuous layer. To ensure good light transmittance, the first electrode layer 80 is usually thin and has a large electrode. When the driving signal is transmitted through the first electrode layer 80, a voltage drop occurs, affecting the display uniformity of the display panel 100. To reduce the resistance of the first electrode layer 80 when driving the light-emitting structure 21 to emit light, and to reduce the power consumption of the integrated circuit driving the light-emitting structure 21 to emit light, the first functional layer 40 also includes a conductive material. The first functional layer 40 is connected in parallel with the first electrode layer 80. Connecting the first functional layer 40 in parallel with the first electrode layer 80 allows the first electrode layer 80 to have lower resistance while maintaining its thinness and good light transmittance, thereby reducing the power consumption of the integrated circuit driving the light-emitting structure 21 to emit light and improving the display uniformity of the display panel 100.

[0041] Furthermore, the first functional layer 40 is disposed on the side of the light extraction layer 30 away from the substrate 10, and the light extraction layer 30 is disposed on the side of the first electrode layer 80 away from the substrate 10. The light extraction layer 30 can form a certain degree of insulation between the first electrode layer 80 and the first functional layer 40 to ensure smooth insulation between the first electrode layer 80 and the first functional layer 40, and improve the reliability of the parallel arrangement between the first electrode layer 80 and the first functional layer 40.

[0042] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 5 The display panel 100 has a first region Q1 and a second region Q2 surrounding the first region Q1. A plurality of light-emitting structures 21 are located within the first region Q1 and outside the second region Q2. The first functional layer 40 includes a first functional portion 41 located in the second region Q2, and the first electrode layer 80 includes a first electrode portion 81 located within the second region Q2. At least a portion of the structure in the first functional portion 41 has its orthographic projection on the substrate 10 located outside the orthographic projection of the light extraction layer 30 on the substrate 10, and the first functional portion 41 is disposed in contact with the first electrode portion 81.

[0043] The first area Q1 is the display area of ​​the display panel 100, and the second area Q2 is the border area of ​​the display panel 100. Multiple light-emitting structures 21 are located inside the display area to achieve the display effect of the display panel 100. The border area is a current converging area, and the current from all display areas is connected to the integrated circuit through the border area.

[0044] The first functional layer 40 includes a first functional portion 41 located in the second region Q2. At least a portion of the structure of the first functional portion 41 is projected onto the substrate 10 outside the projected structure of the light extraction layer 30 onto the substrate 10. That is, at least a portion of the structure of the first functional portion 41 extends beyond the light extraction layer 30. The first electrode layer 80 includes a first electrode portion 81 within the second region Q2. The first functional portion 41 is in contact with the first electrode portion 81 to achieve parallel connection between the first electrode layer 80 and the first functional layer 40.

[0045] When the integrated circuit transmits driving current to the first electrode layer 80, the current is shunted at the connection point between the first functional unit 41 and the first electrode layer 80 in the frame area, and then transmitted to the first electrode layer 80 and the first functional layer 40 in the display area, realizing the parallel connection between the first electrode layer 80 and the first functional layer 40. The first functional layer 40 is used to reduce the resistance of the first electrode layer 80 when the integrated circuit transmits driving current to the first electrode layer 80, thereby achieving the purpose of reducing power consumption.

[0046] In some embodiments, please refer to Figure 1 and Figure 6 The first functional layer 40 includes a plurality of dimming patterns 42 spaced apart, and the orthographic projections of the plurality of dimming patterns 42 onto the substrate 10 overlap with the orthographic projections of the plurality of light-emitting structures 21 onto the substrate 10.

[0047] To reduce the probability of crosstalk between different colors of light caused by the lateral propagation of large-angle light within the first functional layer 40, the first functional layer 40 includes a plurality of dimming patterns 42 spaced apart, with each dimming pattern 42 corresponding to a plurality of light-emitting structures 21. Adjacent dimming patterns 42 can be separated by an upper film layer structure, allowing light to pass directly through the gaps between adjacent dimming patterns 42, thereby reducing the probability of lateral coupling of light within the first functional layer.

[0048] By corresponding multiple dimming patterns 42 with multiple light-emitting structures 21, it is also possible to realize targeted design between different dimming patterns 42 and different light-emitting structures 21. Under the premise that different colored lights have different attenuation levels, by adjusting the dimming pattern 42, the attenuation difference of different colored lights during the propagation process can be reduced, thereby ensuring the display uniformity of the display panel 100.

[0049] In some embodiments, please refer to Figure 1 and Figure 7 The plurality of light-emitting structures 21 include a first light-emitting structure 211 for emitting a first color of light and a second light-emitting structure 212 for emitting a second color of light. The plurality of dimming patterns 42 include a first dimming pattern 421 corresponding to the first light-emitting structure 211 and a second dimming pattern 422 corresponding to the second light-emitting structure 212. The first dimming pattern 421 and the second dimming pattern 422 have different thicknesses. And / or, the first dimming pattern 421 and the second dimming pattern 422 have different refractive indices.

[0050] To achieve multi-color display on the display panel 100, at least some of the different light-emitting structures 21 emit light of different colors. The multiple light-emitting structures 21 include at least one of a red light-emitting structure 21 for emitting red light, a blue light-emitting structure 21 for emitting blue light, and a green light-emitting structure 21 for emitting green light. The first light-emitting structure 211 can be one of the red, blue, and green light-emitting structures 21, and the second light-emitting structure 212 can be another of the red, blue, and green light-emitting structures 21. The display panel 100 may also include a third light-emitting structure 21, with the first, second, and third light-emitting structures 211, 212, and 21 respectively corresponding to the red, blue, and green light-emitting structures 21.

[0051] Multiple dimming patterns 42 include a first dimming pattern 421 corresponding to the first light-emitting structure 211 and a second dimming pattern 422 corresponding to the second light-emitting structure 212. Based on the different requirements or attenuation levels of the first color light and the second color light, the first dimming pattern and the second dimming pattern 422 can be set differently to meet the different requirements or attenuation levels of the first color light and the second color light.

[0052] Specifically, taking the example where the attenuation of the first color light is greater than that of the second color light, when the required brightness of the first and second color lights is the same, the transmittance of the first dimming pattern 421 can be set to be greater than that of the second dimming pattern 422. By adjusting different dimming patterns 42, the propagation requirements of different colors of light can be met. For example, the thicknesses of the first dimming pattern 421 and the second dimming pattern 422 can be set to be different, or the refractive indices of the first dimming pattern 421 and the second dimming pattern 422 can be set to be different. By achieving differences in transmittance between the first dimming pattern 421 and the second dimming pattern 422 in terms of thickness or refractive index, the transmission requirements of different colors of light can be met.

[0053] In some embodiments, please refer to Figure 1 and Figure 8 The display panel 100 also includes a second functional layer 90, which encloses and forms multiple opening structures, and multiple dimming patterns 42 are disposed within the multiple opening structures.

[0054] To reduce the structural stress of the internal film layer of the display panel 100, the display panel 100 also includes a second functional layer 90, which is disposed on the same layer as the first functional layer 40. The second functional layer 90 encloses and forms multiple opening structures. The first functional layer 40 includes multiple dimming patterns 42, which are disposed within the multiple opening structures. By placing the dimming patterns 42 in the first functional layer 40 within the opening structures of the second functional layer 90, the second functional layer 90 can provide a certain degree of lateral isolation for the dimming patterns 42, reducing light crosstalk. At the same time, the dimming patterns 42 being located within the opening structures facilitates the control of longitudinal light, ensuring the longitudinal transmission of light within the display panel 100.

[0055] The first functional layer 40 and the second functional layer 90 are made of different materials. When light propagates to the edge in the dimming pattern 42, the second functional layer 90 can block the propagation of light to a certain extent, thereby isolating the light to a certain extent in the lateral direction to reduce light crosstalk.

[0056] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 8 The display panel 100 also includes a first electrode layer 80 disposed between the light-emitting functional layer 20 and the light extraction layer 30. The orthographic projection of the first electrode layer 80 onto the substrate 10 overlaps with the orthographic projection of the plurality of light-emitting structures 21 onto the substrate 10. The second functional layer 90 includes a conductive material. The second functional layer 90 and the first electrode layer 80 include the same material and are disposed in contact.

[0057] Based on the nested arrangement of the first functional layer 40 and the second functional layer 90 in the same layer, the second functional layer 90 includes conductive material and is connected in parallel to the first electrode layer 80. This can reduce the resistance of the first electrode layer 80 while specifically meeting the needs of different color light, thereby reducing the power consumption when the integrated circuit drives the light-emitting structure 21 to emit light, so as to improve the display uniformity of the display panel 100 and ensure the display effect of the display panel 100.

[0058] Secondly, please refer to Figure 9 This application provides a display device 200, which includes the display panel 100 provided in any embodiment of the first aspect of this application. The display device 200 includes all the technical features of the display panel 100 and has all the beneficial effects of the display panel 100, which will not be repeated here.

[0059] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, include: Substrate; A light-emitting functional layer is disposed on one side of the substrate, and the light-emitting functional layer includes multiple light-emitting structures; A light extraction layer is disposed on the side of the light-emitting functional layer opposite to the substrate, and the orthographic projection of the light extraction layer on the substrate overlaps with the orthographic projection of the plurality of light-emitting structures on the substrate; A first functional layer is in contact with the light extraction layer and together they form an antireflection film layer. The antireflection film layer includes a first surface facing the substrate and a second surface facing away from the substrate. At least a portion of the light reflected through the first surface and the second surface can interfere destructively.

2. The display panel according to claim 1, characterized in that, The first functional layer is disposed in contact with the surface of the light extraction layer opposite to the substrate.

3. The display panel according to claim 2, characterized in that, It also includes an encapsulation layer on the side of the first functional layer opposite to the substrate, wherein the orthographic projection of the first functional layer on the substrate and the orthographic projection of the encapsulation layer on the substrate overlap.

4. The display panel according to claim 1, characterized in that, The refractive index of the first functional layer is less than the refractive index of the light extraction layer; and / or, The thickness of the first functional layer is H1, where H1 ≤ 200 nm.

5. The display panel according to claim 1, characterized in that, It also includes a filter layer disposed on the side of the light extraction layer opposite to the substrate, the filter layer including a plurality of filter portions corresponding to the plurality of light-emitting structures respectively; Wherein, the orthographic projection of the first functional layer on the substrate overlaps with the orthographic projection of the plurality of filter portions on the substrate.

6. The display panel according to claim 1, characterized in that, It also includes a first electrode layer disposed between the light-emitting functional layer and the light extraction layer, wherein the orthographic projection of the first electrode layer on the substrate overlaps with the orthographic projection of the plurality of light-emitting structures on the substrate; The first functional layer includes a conductive material, and the first functional layer is arranged in parallel with the first electrode layer.

7. The display panel according to claim 6, characterized in that, The display panel has a first area and a second area surrounding the first area, and the plurality of light-emitting structures are located within the first area and outside the second area; The first functional layer includes a first functional portion located in the second region, and the first electrode layer includes a first electrode portion located in the second region. At least a portion of the structure in the first functional portion is located outside the orthogonal projection of the light extraction layer onto the substrate, and the first functional portion is disposed in contact with the first electrode portion.

8. The display panel according to claim 1, characterized in that, The first functional layer includes a plurality of dimming patterns spaced apart, and the orthographic projections of the plurality of dimming patterns on the substrate overlap with the orthographic projections of the plurality of light-emitting structures on the substrate.

9. The display panel according to claim 8, characterized in that, The plurality of light-emitting structures include a first light-emitting structure for emitting a first color light and a second light-emitting structure for emitting a second color light, and the plurality of dimming patterns include a first dimming pattern corresponding to the first light-emitting structure and a second dimming pattern corresponding to the second light-emitting structure; Wherein, the first dimming pattern and the second dimming pattern have different thicknesses, and / or the first dimming pattern and the second dimming pattern have different refractive indices.

10. The display panel according to claim 8, characterized in that, It also includes a second functional layer, which encloses and forms multiple opening structures, and the multiple dimming patterns are disposed within the multiple opening structures.

11. The display panel according to claim 10, characterized in that, It also includes a first electrode layer disposed between the light-emitting functional layer and the light extraction layer, wherein the orthographic projection of the first electrode layer on the substrate overlaps with the orthographic projection of the plurality of light-emitting structures on the substrate; The second functional layer comprises a conductive material, and the second functional layer and the first electrode layer comprise the same material and are disposed in contact.

12. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 11.

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