Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate; the light-emitting device layer is located on one side of the substrate, the light-emitting device layer comprises a plurality of light-emitting units, and each light-emitting unit comprises a first electrode, a light-emitting function layer and a second electrode which are sequentially arranged in a stacked mode in the direction away from the substrate; wherein the surface, away from the substrate, of the first electrode is provided with a plurality of dimming structures which are arranged at intervals, or the first electrode forms a plurality of dimming structures which are arranged at intervals; the orthographic projection of the dimming structure on the substrate is a regular polygon or a circle with the number of sides larger than or equal to 5. According to the technical scheme, large-view-angle color cast can be improved, and diffraction can be reduced.

Description

Technical Field

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

[0002] With the development of display technology, Organic Light Emitting Diode (OLED) devices are increasingly being used in flexible display products, such as high-end mobile devices, wearable devices, virtual reality displays, and augmented reality displays, due to their advantages such as self-illumination, light weight, thinness, wide color gamut, fast response speed, and flexibility. However, the brightness and chromaticity at large viewing angles are lower than those at normal viewing angles, resulting in issues of color shift and brightness attenuation at large viewing angles, which are particularly noticeable in large-size display panels or foldable products. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a display panel and a display device.

[0004] In a first aspect, embodiments of this application provide a display panel, comprising: a substrate; a light-emitting device layer located on one side of the substrate, the light-emitting device layer comprising a plurality of light-emitting units, each light-emitting unit comprising a first electrode, a light-emitting functional layer and a second electrode sequentially stacked along a direction away from the substrate; wherein the surface of the first electrode facing away from the substrate has a plurality of dimming structures spaced apart, or the first electrode forms a plurality of dimming structures spaced apart; wherein the orthographic projection of the dimming structure on the substrate is a regular polygon with a number of sides greater than or equal to 5 or a circle.

[0005] In conjunction with the first aspect, in the direction perpendicular to the substrate, the thickness of the dimming structure is greater than or equal to 20 nm and less than or equal to 300 nm; preferably, the radius of the circumcircle of the regular polygon or the radius of the circle is greater than 2λ / n, where λ is the wavelength of the light emitted by the light-emitting functional layer and n is the refractive index of the dimming structure; preferably, the distance between the centers of the circumcircles of two adjacent regular polygons or the centers of two adjacent circles is greater than 2λ; preferably, the material of the dimming structure includes indium tin oxide or polymethyl methacrylate.

[0006] In conjunction with the first aspect, the first electrode includes a first conductive layer and a second conductive layer sequentially stacked along the direction away from the substrate, wherein the sum of the thicknesses of the first conductive layer and the second conductive layer is less than or equal to 120 nm along the direction perpendicular to the substrate; or, the first electrode includes a third conductive layer, a first conductive layer, and a second conductive layer sequentially stacked along the direction away from the substrate, wherein the sum of the thicknesses of the first conductive layer, the second conductive layer, and the third conductive layer is less than or equal to 120 nm along the direction perpendicular to the substrate; preferably, the material of the first conductive layer includes silver; and / or, the material of the second conductive layer includes indium tin oxide; and / or, the material of the third conductive layer includes indium tin oxide; preferably, the first electrode further includes a first dimming layer located between the first conductive layer and the second conductive layer; or, the first dimming layer is located on the side of the second conductive layer facing away from the substrate; preferably, the first dimming layer... The material includes silver nanowires; preferably, the display panel further includes a pixel definition layer located on one side of the substrate, the pixel definition layer enclosing a plurality of pixel openings, at least a portion of the light-emitting unit being located within the pixel openings, and the pixel openings exposing at least a portion of the first electrode; preferably, the display panel further includes an encapsulation layer located on the side of the light-emitting unit away from the substrate, the encapsulation layer including a first sub-encapsulation layer, a second sub-encapsulation layer, and a third sub-encapsulation layer stacked sequentially along a direction away from the substrate; preferably, the display panel further includes a touch layer located on the side of the encapsulation layer away from the substrate; preferably, the display panel further includes a color filter layer located on the side of the touch layer away from the substrate, the color filter layer including a light-shielding portion and a plurality of color resist units, the light-shielding portion enclosing a plurality of light-transmitting openings, the color resist units filling the light-transmitting openings, the light-transmitting openings corresponding to the pixel openings, and the orthogonal projection of the light-transmitting openings on the substrate covering the orthogonal projection of the pixel openings on the substrate.

[0007] In conjunction with the first aspect, the display panel further includes: a pixel defining layer located on one side of the substrate, the pixel defining layer enclosing a plurality of pixel openings, at least a portion of the light-emitting unit being located within the pixel openings, the pixel openings exposing at least a portion of the first electrode, the pixel defining layer including a dimming portion disposed near the pixel opening, the orthographic projection of the dimming portion on the substrate surrounding the pixel opening, the surface of the dimming portion away from the substrate including a first adjustment surface, and the distance between the first adjustment surface and the substrate gradually increasing in the direction of the dimming portion pointing towards the pixel opening; preferably, the display panel further includes an organic layer located on the side of the first electrode near the substrate, the organic layer forming a plurality of protrusions, the protrusions corresponding to the pixel openings, the surface of the protrusions away from the substrate including a support surface and a second adjustment surface, the orthographic projection of the second adjustment surface on the substrate surrounding the orthographic projection of the support surface on the substrate, the support surface exposing the pixel opening, and the dimming portion located on the side of the second adjustment surface away from the substrate; preferably, the support surface is provided with a plurality of spaced-apart bosses, the bosses corresponding to the dimming structure The panel should be configured such that the orthographic projection of the protrusion on the substrate lies within the orthographic projection of the corresponding dimming structure on the substrate; preferably, the material of the protrusion includes polymethyl methacrylate; preferably, the thickness of the protrusion is greater than or equal to 1 μm in the direction perpendicular to the substrate; preferably, the first adjustment surface includes a slope, and / or, at least a portion of the second adjustment surface is curved; preferably, the first electrode at least covers the support surface; preferably, the orthographic projection of the first electrode on the substrate covers the orthographic projection of the protrusion on the substrate; preferably, the orthographic projection of the second electrode on the substrate covers the orthographic projection of the pixel opening on the substrate and the orthographic projection of the first adjustment surface on the substrate; preferably, the display panel further includes a second dimming layer, at least located on the side of the first adjustment surface away from the substrate; preferably, the second dimming layer is located between the first adjustment surface and the second electrode, or, the second dimming layer is located on the side of the second electrode away from the substrate; preferably, the material of the second dimming layer includes silver nanowires; preferably, the material of the pixel definition layer includes a light-transmitting material.

[0008] In conjunction with the first aspect, the display panel further includes a color filter layer located on the side of the pixel definition layer away from the substrate. The color filter layer includes a light-shielding portion and multiple color resist units. The light-shielding portion encloses to form multiple light-transmitting openings. The color resist units fill the light-transmitting openings. The light-transmitting openings correspond to the pixel openings. The orthographic projection of the light-transmitting openings on the substrate covers the orthographic projection of the pixel openings on the substrate. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 2.5 μm. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 1 μm. Preferably, the display panel further includes a filling layer located between the color filter layer and the pixel definition layer. Preferably, the first adjustment surface includes an inclined surface. The angle θ between the first adjustment surface and the plane where the substrate is located is greater than a preset angle θ0, and the preset angle θ0 satisfies formula (1):

[0009] θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1),

[0010] Where h is the vertical distance between the surface of the color filter layer near the substrate and the end of the first adjustment surface near the pixel opening, and n is the refractive index of the filling layer; preferably, the filling layer includes at least one of the encapsulation layer and the touch layer.

[0011] Secondly, embodiments of this application also provide a display panel, comprising: a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer enclosing a plurality of pixel openings, the pixel definition layer including a dimming part disposed near the pixel openings, the orthographic projection of the dimming part on the substrate surrounding the pixel openings, the surface of the dimming part away from the substrate including a first adjustment surface, the distance between the first adjustment surface and the substrate gradually increasing in the direction of the dimming part pointing towards the pixel openings; and a second dimming layer located at least on the side of the first adjustment surface away from the substrate, to reduce the reflection of light irradiated on the first adjustment surface.

[0012] In conjunction with the second aspect, the display panel further includes a light-emitting device layer, which includes a plurality of light-emitting units. At least a portion of the light-emitting units is located within a pixel opening. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the substrate. The pixel opening exposes a portion of the first electrode. The orthographic projection of the second electrode onto the substrate covers the orthographic projection of the pixel opening onto the substrate and the orthographic projection of the first adjustment surface onto the substrate. Preferably, the second dimming layer is located between the first adjustment surface and the second electrode, or the second dimming layer is located on the side of the second electrode facing away from the substrate. Preferably, the material of the second dimming layer includes silver nanowires. Preferably, the material of the pixel defining layer includes a light-transmitting material.

[0013] In conjunction with the second aspect, the display panel further includes: an organic layer located between the substrate and the pixel definition layer, the organic layer forming a plurality of protrusions corresponding to pixel openings, the surface of the protrusions facing away from the substrate including a support surface and a second adjustment surface, the orthographic projection of the second adjustment surface on the substrate surrounding the orthographic projection of the support surface on the substrate, the support surface being exposed to the pixel openings, and a dimming portion located on the side of the second adjustment surface facing away from the substrate; preferably, in the direction perpendicular to the substrate, the thickness of the protrusions is greater than or equal to 1 μm; preferably, the first adjustment surface includes an inclined surface, and / or, at least a portion of the second adjustment surface is a curved surface.

[0014] In conjunction with the second aspect, the display panel further includes a color filter layer located on the side of the pixel definition layer away from the substrate. The color filter layer includes a light-shielding portion and multiple color resist units. The light-shielding portion encloses to form multiple light-transmitting openings. The color resist units fill the light-transmitting openings. The light-transmitting openings correspond to the pixel openings. The orthographic projection of the light-transmitting openings on the substrate covers the orthographic projection of the pixel openings on the substrate. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 2.5 μm. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 1 μm. Preferably, the display panel further includes a filling layer located between the color filter layer and the pixel definition layer. Preferably, the first adjustment surface includes an inclined surface. The angle θ between the first adjustment surface and the plane where the substrate is located is greater than a preset angle θ0, and the preset angle θ0 satisfies formula (1):

[0015] θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1),

[0016] Where h is the distance between the surface of the color filter layer near the substrate and the end of the first adjustment surface near the pixel opening, and n is the refractive index of the filling layer; preferably, the filling layer includes at least one of the encapsulation layer and the touch layer.

[0017] Thirdly, embodiments of this application also provide a display device, including the display panel described above.

[0018] Through the above technical solutions, a dimming structure is provided on the surface of the first electrode away from the substrate, or the first electrode forms a dimming structure. This dimming structure makes the first electrode have a non-flat surface. When light shines on the surface of the first electrode, the direction of the light can be changed (e.g., deviating from the normal direction), weakening the microcavity effect and reducing large viewing angle color shift. In addition, after the light-emitting functional layer is deposited on the first electrode, the light-emitting functional layer also has an uneven surface. The light emitted by the light-emitting functional layer can be emitted in multiple directions, which can also reduce large viewing angle color shift. In addition, when ambient light shines on the first electrode, the reflection direction of the ambient light can be changed, so that the reflection angle of the ambient light deviates from the normal direction and can no longer be emitted from the display panel, reducing ambient light reflection. In the embodiments of this application, the dimming structure is a regular polygon with more than or equal to 5 sides or a circle. In this way, the diffraction effect of light can be reduced, avoiding display unevenness (e.g., mura). Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of a display panel provided in an embodiment of this application.

[0020] Figure 2a and Figure 2bThese are top views of a dimming structure provided in one embodiment of this application.

[0021] Figures 3a to 3d These are schematic diagrams of the cross-sectional structure of the first electrode provided in an embodiment of this application.

[0022] Figure 4 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application.

[0023] Figure 5 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application.

[0024] Figure 6a and Figure 6b This is a partial cross-sectional structural diagram of a display panel provided in one embodiment of this application.

[0025] Figure 7 This is a partial cross-sectional structural diagram of a display panel provided in one embodiment of this application.

[0026] Figure 8 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application.

[0027] Figure 9 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In top-emitting OLEDs, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode. Typically, the first electrode (e.g., the anode) is a total internal reflection electrode, and the second electrode (e.g., the cathode) is a semi-transparent, semi-reflective electrode. This creates a microcavity effect between the first and second electrodes. The microcavity effect selectively narrows and enhances the light source, thus strengthening the light at a forward viewing angle, but not enhancing or even weakening the light at a wide viewing angle. Consequently, the brightness decays faster at wide viewing angles than at forward viewing angles, and there is a color difference between wide and forward viewing angles, i.e., color shift at wide viewing angles. Furthermore, the first electrode is a flat surface, and the reflected light is mainly concentrated in the normal direction, causing color drift at wide viewing angles. With the widespread use of foldable products in the market, there will be situations where both forward and oblique (or wide) viewing angles are used simultaneously in a bent form. In these cases, the color shift and brightness decay at wide viewing angles become more pronounced, affecting the user experience.

[0030] To address the aforementioned technical problems, in a first aspect, embodiments of this application provide a display panel, comprising: a substrate and a light-emitting device layer. The light-emitting device layer is located on one side of the substrate and includes multiple light-emitting units. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the substrate. The first electrode has multiple spaced-apart dimming structures on its surface away from the substrate, or the first electrode forms multiple spaced-apart dimming structures. The orthographic projection of the dimming structure onto the substrate is a regular polygon with 5 or more sides or a circle. A "regular polygon" refers to a polygon where all sides are equal in length and all interior angles are equal. In embodiments of this application, the dimming structure is provided on the surface of the first electrode away from the substrate, or the first electrode forms a dimming structure. This dimming structure gives the first electrode a non-flat surface, allowing light to change its direction (e.g., deviating from the normal direction) when it strikes the surface of the first electrode, thus weakening the microcavity effect and reducing large viewing angle glare. Furthermore, after the light-emitting functional layer is deposited on the first electrode, it also has an uneven surface, allowing light emitted from the light-emitting functional layer to be emitted in multiple directions, which also reduces large viewing angle glare. Furthermore, when ambient light shines on the first electrode, it can change the direction of reflection, causing the reflection angle of the ambient light to deviate from the normal direction, preventing it from escaping from the display panel and reducing ambient light reflection. In this embodiment, the dimming structure is a regular polygon with 5 or more sides or a circle, which can reduce the diffraction effect of light and avoid uneven display (e.g., mura).

[0031] Figure 1 This is a schematic cross-sectional view of a display panel provided in one embodiment of this application. Figure 1 As shown, the display panel includes a substrate 10, a pixel definition layer 20, and a light-emitting device layer 30.

[0032] In this embodiment, the substrate 10 may include a substrate and a circuit layer (not shown) formed on the substrate. The substrate may be a rigid substrate, such as glass, polymethyl methacrylate (PMMA), or a silicon substrate, or a flexible substrate, such as polyethylene terephthalate (PET), polyimide (PI), or polyethylene naphthalate (PEN). The circuit layer may include multiple wiring layers and a dielectric layer isolating the wiring layers, and pixel circuits may be formed in the circuit layer.

[0033] The pixel definition layer 20 is located on one side of the substrate 10, and the pixel definition layer 20 encloses a plurality of pixel openings 201. It should be noted that... Figure 1 Only three pixel openings 201 are shown in the image; it can be understood that the display panel includes multiple pixel openings 201. Optionally, the material of the pixel definition layer 20 may include organic or inorganic materials.

[0034] The light-emitting device layer 30 includes a plurality of light-emitting units 300, at least a portion of which is located within the pixel opening 201. Optionally, the light-emitting unit 300 includes a first electrode 310, a light-emitting functional layer 320, and a second electrode 330 sequentially stacked along a direction away from the substrate 10. The pixel opening 201 exposes at least a portion of the first electrode 310.

[0035] In this embodiment, the surface of the first electrode 310 facing away from the substrate 10 has a plurality of spaced dimming structures (due to the small size of the dimming structures, in...) Figure 1 (Not shown in Figure 2, but shown in Figures 3 and 4). The orthographic projection of the dimming structure 315 onto the substrate 10 is a regular polygon with 5 or more sides or a circle. In this embodiment, the dimming structure 315 is disposed on the surface of the first electrode 310 away from the substrate 10. This dimming structure 315 makes the first electrode 310 have a non-flat surface. When light shines on the surface of the first electrode 310, the direction of the light can be changed (e.g., deviating from the normal direction), weakening the microcavity effect and reducing large viewing angle color shift. In addition, after the light-emitting functional layer 320 is deposited on the first electrode 310, the light-emitting functional layer 320 also has an uneven surface. The light emitted by the light-emitting functional layer 320 can be emitted in multiple directions, which can also reduce large viewing angle color shift. Furthermore, when ambient light shines on the first electrode 310, the reflection direction of the ambient light can be changed, so that the reflection angle of the ambient light deviates from the normal direction and can no longer be emitted from the display panel, reducing ambient light reflection.

[0036] It should be noted that if the microstructure designed on the anode is close to the wavelength of visible light, diffraction is likely to occur, affecting the straight-line propagation of light and resulting in diffraction fringes. In the embodiments of this application, the dimming structure is a regular polygon with 5 or more sides or a circle. In this way, the diffraction conditions can be broken, the diffraction effect can be reduced, and uneven display (e.g., mura) can be avoided.

[0037] Figure 2a and Figure 2b These are top views of a dimming structure provided in one embodiment of this application. Figure 2a In the middle, the orthographic projection of the dimming structure 315 onto the substrate 10 is a regular hexagon; in Figure 2bIn this embodiment, the orthographic projection of the dimming structure 315 onto the substrate 10 is a circle. It is understood that in other embodiments, the orthographic projection of the dimming structure 315 onto the substrate 10 can also be other regular polygons, such as a regular pentagon, regular heptagon, regular octagon, regular decagon, etc. It should be noted that the closer the orthographic projection of the dimming structure 315 onto the substrate 10 is to a circle, the more significant the improvement in diffraction effect. This is because a circle itself has isotropic light scattering characteristics, which can more uniformly diffuse the emission angle distribution, has smooth edges, suppresses abrupt changes in the spatial frequency of light, and further reduces the diffraction effect.

[0038] For diffraction to occur, the following diffraction conditions must generally be met: Where, θ m Let λ represent the m-th order diffraction angle; λ represent the incident wavelength; n represent the refractive index of the material (e.g., the refractive index of the dimming structure 315); p represent the structural period (the center-to-center distance between adjacent regular polygons or adjacent circles); and m represent the diffraction order (typically starting from ±1). To break diffraction, the equation needs to be unsolvable, i.e., the diffraction angle cannot be calculated. Therefore, in the embodiments of this application, the size of the regular polygons or circles is limited, and the distance between adjacent regular polygons or adjacent circles is also limited.

[0039] In this embodiment, the radius of the circumcircle of the regular polygon or the radius of the circle is greater than 2λ / n, where λ is the wavelength of the light emitted by the light-emitting functional layer 320, and n is the refractive index of the dimming structure 315. The distance between the centers of the circumcircles of two adjacent regular polygons or the centers of two adjacent circles is greater than 2λ. Figure 2a As shown, the circumradius r1 of the hexagon is greater than 2λ / n, and the distance m1 between the centers of the circumradiuses of two adjacent hexagons is greater than 2λ. Figure 2b As shown, the radius r2 of the circle is greater than 2λ / n, and the distance m2 between the centers of two adjacent circles is greater than 2λ. After satisfying the above conditions, this application embodiment does not particularly limit the arrangement of multiple regular polygons or multiple circles. Optionally, multiple regular polygons or multiple circles can be arranged periodically, or they can be arranged non-periodicly (or quasi-periodicly).

[0040] It should be noted that the light-emitting functional layer 320 can emit red, green and blue light. Since red light has the longest wavelength, in this solution, the wavelength of red light can be used to determine the radius of the circumcircle of the regular polygon or the radius of the circle (e.g., r1, r2), as well as the distance between the centers of the circumcircles of two adjacent regular polygons or the distance between the centers of two adjacent circles (e.g., m1, m2). In other embodiments, the first electrode 310 corresponding to the light-emitting units 300 of different colors can be designed differently. For the first electrode 310 corresponding to the red light-emitting unit, the radius of the circumcircle of the regular polygon or the radius of the circle (e.g., r1, r2) is determined according to the wavelength of red light, as well as the distance between the centers of the circumcircles of two adjacent regular polygons or the distance between the centers of two adjacent circles (e.g., m1, m2). For the first electrode 310 corresponding to the green light-emitting unit, the radius of the circumcircle of the regular polygon or the radius of the circle (e.g., r1, r2) is determined according to the wavelength of green light, as well as the distance between the centers of the circumcircles of two adjacent regular polygons (e.g., m1, m2). For the first electrode 310 corresponding to the blue light-emitting unit, the radius of the circumcircle of the regular polygon or the radius of the circle (e.g., r1, r2) is determined according to the wavelength of blue light, as well as the distance between the centers of the circumcircles of two adjacent regular polygons or the distance between the centers of two adjacent circles (e.g., m1, m2).

[0041] Figures 3a to 3d These are schematic cross-sectional views of the first electrode provided in one embodiment of this application. Optionally, Figures 3a to 3d yes Figure 1 An enlarged view of region A in the image. Figures 3a to 3d The image also shows a dimming structure 315. In this embodiment, the thickness of the dimming structure 315 in the direction perpendicular to the substrate 10 is greater than or equal to 20 nm and less than or equal to 300 nm. Optionally, the thickness of the dimming structure 315 is 20 nm, 50 nm, 100 nm, 150 nm, 200 nm, 250 nm, or 300 nm. In this embodiment, when the thickness of the dimming structure 315 is within this range, it can change the direction of light, causing the light to be emitted deviated from the normal direction, thus reducing large-viewing-angle spectral distortion. In this embodiment, the material of the dimming structure 315 includes indium tin oxide (ITO). Since the material of the first electrode 310 includes ITO, the dimming structure 315 can be prepared when preparing the ITO conductive layer (i.e., the second conductive layer 312). For example, a thicker ITO material layer can be prepared, and the ITO material layer can be etched to form the ITO conductive layer (i.e., the second conductive layer 312) and the dimming structure 315. That is, the dimming structure 315 and the second conductive layer 312 can be an integral structure.

[0042] Optionally, such as Figure 3aAs shown, the first electrode 310 includes a first conductive layer 311 and a second conductive layer 312 sequentially stacked along a direction away from the substrate 10. Along a direction perpendicular to the substrate 10, the sum of the thicknesses of the first conductive layer 311 and the second conductive layer 312 is less than or equal to 120 nm, for example, 120 nm, 110 nm, 100 nm, 90 nm, 80 nm, etc. Alternatively, as... Figure 3b As shown, the first electrode 310 includes a third conductive layer 313, a first conductive layer 311, and a second conductive layer 312 sequentially stacked along a direction away from the substrate 10. Along a direction perpendicular to the substrate 10, the sum of the thicknesses of the first conductive layer 311, the second conductive layer 312, and the third conductive layer 313 is less than or equal to 120 nm, for example, 120 nm, 110 nm, 100 nm, 90 nm, 80 nm, etc. The material of the first conductive layer 311 includes a metallic material, such as silver, copper, or gold. The materials of the second conductive layer 312 and the third conductive layer 313 include transparent conductive oxide materials, such as indium tin oxide, fluorine-doped tin oxide, aluminum-doped zinc oxide, boron-doped zinc oxide, etc. Optionally, the material of the first conductive layer 311 includes silver, the material of the second conductive layer 312 includes indium tin oxide, and the material of the third conductive layer 313 includes indium tin oxide.

[0043] In this embodiment, the first electrode 310 further includes a first dimming layer 314, which is located between the first conductive layer 311 and the second conductive layer 312, or the first dimming layer 314 is located on the side of the second conductive layer 312 facing away from the substrate 10. Optionally, the material of the first dimming layer 314 includes silver nanowires. Since silver nanowires are easily oxidized, it is preferable to place the first dimming layer 314 between the first conductive layer 311 and the second conductive layer 312. Figure 3c and 3d As shown, the first dimming layer 314 is located between the first conductive layer 311 and the second conductive layer 312. In this embodiment, by providing the first dimming layer 314, the conductivity of the first electrode 310 can be improved, the resistance can be reduced, and the driving uniformity and brightness uniformity can be improved; it can also weaken the microcavity effect and reduce the large viewpoint color shift.

[0044] Figure 4 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application. For example... Figure 4 As shown, Figure 4 The display panel shown is Figure 1The difference in the display panel shown is that it also includes an encapsulation layer 610 located on the side of the light-emitting unit 300 facing away from the substrate 10. The encapsulation layer 610 includes a first sub-encapsulation layer 611, a second sub-encapsulation layer 612, and a third sub-encapsulation layer 613, which are sequentially stacked along a direction away from the substrate 10. Optionally, the first sub-encapsulation layer 611 and the third sub-encapsulation layer 613 are inorganic encapsulation layers, and the second sub-encapsulation layer 612 is an organic encapsulation layer.

[0045] Optionally, the display panel further includes a touch layer 620 located on the side of the encapsulation layer 610 facing away from the substrate 10. Optionally, the touch layer 620 includes a first insulating layer, a first touch electrode, a second insulating layer, and a second touch electrode; this embodiment is not limited thereto.

[0046] Optionally, the display panel also includes a color filter layer 50 located on the side of the touch layer 620 opposite to the substrate 10. The color filter layer 50 includes a light-shielding portion 510 and a plurality of color resist units 520. The light-shielding portion 510 surrounds and forms a plurality of light-transmitting openings 511. The color resist units 520 fill the light-transmitting openings 511. The light-transmitting openings 511 correspond to the pixel openings 201. The orthographic projection of the light-transmitting openings 511 on the substrate 10 covers the orthographic projection of the pixel openings 201 on the substrate 10.

[0047] In some embodiments, although the display panel is provided with a color filter layer 50 (in which the light-shielding part 510 can block part of the ambient light) and a dimming structure 315 is provided on the first electrode 310, the first electrode 310 can only change the angle of the ambient light reflected into the pixel opening 201. The ambient light that illuminates the pixel definition layer 20 is partially reflected onto the light-shielding part 510 and absorbed by the light-shielding part 510; and partially reflected away, so zero reflection of ambient light cannot be achieved. Therefore, the embodiments of this application have made special designs to the pixel definition layer 20 based on the above embodiments, which can achieve near-zero reflection of ambient light.

[0048] Figure 5 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application. Figure 6a and Figure 6b This is a partial cross-sectional structural diagram of a display panel provided in an embodiment of this application. Specifically, Figure 6a and Figure 6b yes Figure 5 A magnified view of region B in the image. Figure 5 The display panel shown is Figure 4The difference in the display panel shown is that the pixel definition layer 20 includes a dimming section 210 disposed near the pixel opening 201. The orthographic projection of the dimming section 210 on the substrate 10 surrounds the pixel opening 201. The surface of the dimming section 210 facing away from the substrate 10 includes a first adjustment surface 211. In the direction from which the dimming section 210 points to the pixel opening 201, the distance between the first adjustment surface 211 and the substrate 10 gradually increases. By configuring the first adjustment surface 211 with this structure, when ambient light shines on its surface, the unabsorbed ambient light can be reflected onto the light-shielding portion 510 of the color filter layer 50, reducing the reflection of ambient light.

[0049] In this embodiment, the orthographic projection of the second electrode 330 onto the substrate 10 covers the orthographic projection of the pixel opening 201 onto the substrate 10 and the orthographic projection of the first adjustment surface 211 onto the substrate 10. Thus, when ambient light shines on the second electrode 330, some of the ambient light is reflected back by the second electrode 330, and some of the ambient light is transmitted into the display panel. When ambient light shines on the second electrode 330 on the first dimming surface, the reflected ambient light can be reflected onto the light-shielding portion 510 of the color filter layer 50, thereby reducing the reflection of ambient light.

[0050] Optionally, such as Figure 6a and Figure 6b As shown, the display panel also includes a second dimming layer 70, located at least on the side of the first adjustment surface 211 facing away from the substrate 10. Wherein, Figure 6a In this configuration, the second dimming layer 70 is located on the side of the first adjustment surface 211 facing away from the substrate 10, and is situated between the first adjustment surface 211 and the second electrode 330. Figure 6b In this embodiment, the second dimming layer 70 is located on the side of the second electrode 330 facing away from the substrate 10. Optionally, the material of the second dimming layer 70 includes silver nanowires. In conventional designs, the pixel definition layer 20 typically uses two materials: a light-absorbing black pixel definition layer and a light-transmitting transparent pixel definition layer. The black pixel definition layer can absorb ambient light irradiating its surface; however, due to manufacturing processes, the black pixel definition layer may suffer from incomplete removal, resulting in contamination. Therefore, in this embodiment, a black pixel definition layer is not required. Instead, a second dimming layer 70 (i.e., silver nanowires) is provided at least on the side of the first adjustment surface 211 facing away from the substrate 10. When light irradiates the second dimming layer 70, some of the light is scattered or refracted by the silver nanowires, meaning the second dimming layer 70 can replace the light-absorbing function of the black pixel definition layer. Optionally, the material of the pixel definition layer 20 includes a light-transmitting material. In this embodiment, the second dimming layer 70 is located at least on the side of the first dimming surface 211 away from the substrate 10. Part of the ambient light is scattered or refracted by the silver nanowires, and part of the ambient light is reflected to the light-shielding portion 510 for blocking. Thus, near-zero reflection of ambient light can be achieved. Figure 6bIn this process, the second dimming layer 70 can also be located on the side of the second electrode 330 facing away from the substrate 10. For example, the second dimming layer 70 can be fabricated after the second electrode 330 is fabricated. Since the material of the second dimming layer 70 includes silver nanowires, the thickness of the second electrode 330 can be reduced. By coating the entire surface of the second electrode 330 with the second dimming layer 70, the conductivity of the second electrode 330 can be enhanced, the lateral resistance can be reduced, and the pixel uniformity and driving response speed can be improved. In addition, since the second electrode 330 is thinned, the transmittance of the second electrode 330 can be increased. When light shines on the second electrode 330, it is easier to emit light, thereby reducing the microcavity response and reducing large viewing angle polarization.

[0051] In this embodiment, the dimming portion 210 of the pixel definition layer 20 is formed by patterning the planarization layer in the array layer and then coating the pixel definition layer with the material of the pixel definition layer. Optionally, the display panel further includes an organic layer 40 (i.e., a planarization layer) located on the side of the first electrode 310 near the substrate 10. The organic layer 40 forms a plurality of protrusions 410, which correspond to the pixel openings 201. The surface of the protrusions 410 facing away from the substrate 10 includes a support surface 412 and a second adjustment surface 411. The orthographic projection of the second adjustment surface 411 on the substrate 10 surrounds the orthographic projection of the support surface 412 on the substrate 10. The support surface 412 is exposed to the pixel openings 201, and the dimming portion 210 is located on the side of the second adjustment surface 411 facing away from the substrate 10. In this embodiment, by providing protrusions 410 on the organic layer 40, the material of the pixel definition layer 20 is deposited on the protrusions 410 during the fabrication of the pixel definition layer 20, and the dimming portion 210 is formed after leveling. It should be noted that in this embodiment, the first adjustment surface 211 is expected to be a slope. However, due to process reasons, the first adjustment surface 211 may not be a standard slope. This embodiment does not consider the changes in the first adjustment surface 211 caused by process fluctuations, and describes the first adjustment surface 211 as a slope, that is, the angle θ between the first adjustment surface 211 and the plane where the substrate 10 is located is a constant. In other embodiments, if the first adjustment surface 211 is not a slope (for example, it is an arc surface), the same method can be used to determine the angle between the tangent at each position point on the arc surface and the plane where the substrate 10 is located, which will not be elaborated here. In this embodiment, at least a portion of the second adjustment surface 411 is a curved surface, and the tilt angle of the second adjustment surface 411 is greater than the tilt angle of the first adjustment surface 211. Only in this way can the first adjustment surface 211 be prepared.

[0052] In this embodiment, the thickness of the protrusion 410 in the direction perpendicular to the substrate 10 is greater than or equal to 1 μm, for example, 1 μm, 1.2 μm, 1.5 μm, 2 μm, etc. In this case, the second adjustment surface 411 of the protrusion 410 can have a large slope, which is necessary to prepare the desired first adjustment surface 211 when depositing the pixel definition layer material. If the thickness of the protrusion 410 is too small, the tilt angle of the second adjustment surface 411 of the protrusion 410 will be too small, increasing the difficulty of preparing the first adjustment surface 211, and it may be impossible to prepare the tilted first adjustment surface 211.

[0053] In this embodiment, the first electrode 310 at least covers the support surface 412 (i.e., at least covers the pixel opening 201). Optionally, the orthogonal projection of the first electrode 310 on the substrate 10 covers the orthogonal projection of the protrusion 410 on the substrate 10. In this embodiment, since the first electrode 310 is provided with a dimming structure 315 and a first dimming layer 314, the orthogonal projection of the first electrode 310 on the substrate 10 covers the orthogonal projection of the protrusion 410 on the substrate 10. When ambient light shines on the first electrode 310 on the second adjustment surface 411, the dimming structure 315 can change the reflection angle of the ambient light, so that the ambient light remains in the display panel, reducing ambient light reflection. In addition, the first dimming layer 314 can scatter or refract ambient light, which can also reduce ambient light reflection.

[0054] Continue to refer to Figure 5 The display panel also includes a color filter layer 50, located on the side of the pixel definition layer 20 opposite to the substrate 10. The color filter layer 50 includes a light-shielding portion 510 and a plurality of color resist units 520. The light-shielding portion 510 surrounds and forms a plurality of light-transmitting openings 511. The color resist units 520 fill the light-transmitting openings 511. The light-transmitting openings 511 correspond to the pixel openings 201. The orthogonal projection of the light-transmitting openings 511 on the substrate 10 covers the orthogonal projection of the pixel openings 201 on the substrate 10. Figure 5 As shown, the distance d (i.e., the outward expansion distance of the light-shielding portion 510) between the edge of the orthogonal projection of the light-transmitting opening 511 on the substrate 10 and the edge of the orthogonal projection of the pixel opening 201 on the substrate 10 is greater than or equal to 0 and less than or equal to 2.5 μm, for example, 0, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, etc. Optionally, the distance d between the edge of the orthogonal projection of the light-transmitting opening 511 on the substrate 10 and the edge of the orthogonal projection of the pixel opening 201 on the substrate 10 is greater than or equal to 0 and less than or equal to 1 μm. In this way, the outward expansion distance of the light-shielding portion 510 is relatively small, which can reduce the difficulty of fabricating the first adjustment surface 211.

[0055] Optionally, the display panel further includes a fill layer 60 located between the color filter layer 50 and the pixel definition layer 20. Optionally, taking the first adjustment surface 211 as an inclined surface as an example, the angle θ between the first adjustment surface 211 and the plane where the substrate 10 is located is greater than a preset angle θ0, and the preset angle θ0 satisfies formula (1):

[0056] θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1)

[0057] Where h is the vertical distance between the surface of the color filter layer 50 near the substrate 10 and the end of the first adjustment surface 211 near the pixel opening 201, and n is the refractive index of the filling layer 60. In this embodiment, the filling layer 60 includes at least one of an encapsulation layer and a touch layer. Here, n can be the equivalent refractive index of multiple film layers, or it can be the refractive index of a thicker film layer (e.g., the refractive index of an organic encapsulation layer).

[0058] In this embodiment of the application, when h is constant, the smaller d is, the smaller the calculated preset angle θ0 is, and the smaller θ can be designed. In this way, the difficulty of preparing the first adjustment surface 211 can be reduced.

[0059] Figure 7 This is a partial cross-sectional structural diagram of a display panel provided in an embodiment of this application. Specifically, Figure 7 yes Figure 5 A magnified view of region C in the image. Figure 7 In this embodiment, the first electrode 310 forms a plurality of spaced-apart dimming structures 315. A plurality of spaced-apart protrusions 42 are provided on the support surface 412 of the protrusion 410. Each protrusion 42 corresponds to a dimming structure 315, and the orthographic projection of the protrusion 42 onto the substrate 10 lies within the orthographic projection of the corresponding dimming structure 315 onto the substrate 10. In this embodiment, protrusions 42 are provided on the support surface 412. When the first electrode material is deposited, the first electrode material is deposited uniformly, thereby forming a first electrode 310 with a concave-convex structure. The first electrode 310 at the protruding position is the dimming structure 315. In this embodiment, the first electrode 310 includes two conductive layers (e.g., a first conductive layer 311 and a second conductive layer 312) or three conductive layers (e.g., a first conductive layer 311, a second conductive layer 312, and a third conductive layer 313). Further description of the dimming structure 315 (e.g., the shape, size, and arrangement of the dimming structure) can be found in the above embodiments and will not be repeated here.

[0060] In this embodiment, the material of the protrusion 42 includes polymethyl methacrylate (PMMA). Optionally, after forming the protrusion 410, a PMMA material layer is formed on the supporting surface 412 of the protrusion 410, and the protrusion 42 is formed using electron beam lithography or self-assembled nanosphere etching. Alternatively, the material of the protrusion 410 is also PMMA, in which case the protrusion 410 and the protrusion 42 are an integral structure and are formed simultaneously.

[0061] Figure 8 This is a cross-sectional structural diagram of a display panel provided in another embodiment of this application. Figure 8 The display panel shown is Figure 5 The difference in the display panel shown is that the filling layer 60 includes an encapsulation layer 610 and a touch layer 620.

[0062] Optionally, the encapsulation layer 610 includes a first sub-encapsulation layer 611, a second sub-encapsulation layer 612, and a third sub-encapsulation layer 613 sequentially stacked along a direction away from the substrate 10. The first sub-encapsulation layer 611 and the third sub-encapsulation layer 613 are made of inorganic materials, while the second sub-encapsulation layer 612 is made of organic materials.

[0063] Optionally, the display panel further includes a touch layer 620 located on the side of the encapsulation layer 610 facing away from the substrate 10. Optionally, the touch layer 620 includes a first insulating layer, a first touch electrode, a second insulating layer, and a second touch electrode sequentially stacked along a direction away from the substrate 10. This embodiment of the application is not limited to this.

[0064] Secondly, embodiments of this application also provide a display panel, specifically as follows: Figures 5 to 8As shown, the display panel includes a substrate 10, a pixel definition layer 20, and a second dimming layer 70. Specifically, the pixel definition layer 20 is located on one side of the substrate 10, and the pixel definition layer 20 encloses a plurality of pixel openings 201. The pixel definition layer 20 includes a dimming portion 210 disposed near the pixel openings 201. The orthographic projection of the dimming portion 210 on the substrate 10 surrounds the pixel openings 201. The surface of the dimming portion 210 facing away from the substrate 10 includes a first adjustment surface 211. In the direction from which the dimming portion 210 points to the pixel openings 201, the distance between the first adjustment surface 211 and the substrate 10 gradually increases. The second dimming layer 70 is located at least on the side of the first adjustment surface 211 facing away from the substrate 10 to reduce the reflection of light irradiated on the first adjustment surface 211. In this embodiment, the first adjustment surface 211 is disposed on the pixel definition layer 20, and the second dimming layer 70 is disposed on the first adjustment surface 211. On the one hand, when ambient light shines on the first adjustment surface 211, some of the light is reflected. At this time, due to the tilt design of the first adjustment surface 211, the reflected light can be blocked by the light-shielding part of the color filter layer that is subsequently prepared; some of the light is scattered or refracted by the second dimming layer 70, so that almost zero reflection of ambient light can be achieved.

[0065] Optionally, the display panel further includes a light-emitting device layer 30, which includes a plurality of light-emitting units 300. At least a portion of each light-emitting unit 300 is located within a pixel opening 201. Each light-emitting unit 300 includes a first electrode 310, a light-emitting functional layer 320, and a second electrode 330 sequentially stacked along a direction away from the substrate 10. The pixel opening 201 exposes a portion of the first electrode 310. The orthographic projection of the second electrode 330 onto the substrate 10 covers both the orthographic projection of the pixel opening 201 onto the substrate 10 and the orthographic projection of the first adjustment surface 211 onto the substrate 10. The second electrode 330 covers the first adjustment surface 211, so that ambient light, after illuminating the first adjustment surface 211, can be reflected by the second electrode 330 to the light-shielding portion 510.

[0066] Optionally, the second dimming layer 70 is located between the first adjustment surface 211 and the second electrode 330, or the second dimming layer 70 is located on the side of the second electrode 330 facing away from the substrate 10. Optionally, the orthogonal projection of the second dimming layer 70 on the substrate 10 covers the orthogonal projection of the second electrode 330 on the substrate 10. For example, the second electrode 330 and the second dimming layer 70 can be laid as a whole layer. In this way, the second electrode 330 can be thinned, and the silver nanowires can enhance the conductivity of the second electrode 330 and reduce the lateral resistance. Moreover, after the second electrode 330 is thinned, the transmittance increases, and light passes through the second electrode 330 more easily, weakening the microcavity effect and reducing the large viewing angle angular deviation.

[0067] Optionally, the second dimming layer 70 is made of silver nanowires; the pixel definition layer 20 is made of a light-transmitting material. In this embodiment, the pixel definition layer 20 can be made of a light-transmitting material to avoid contamination caused by a black pixel definition layer.

[0068] Optionally, the display panel further includes an organic layer 40 located between the substrate 10 and the pixel definition layer 20. The organic layer 40 forms a plurality of protrusions 410, which correspond to the pixel openings 201. The surface of the protrusions 410 facing away from the substrate 10 includes a support surface 412 and a second adjustment surface 411. The orthographic projection of the second adjustment surface 411 on the substrate 10 surrounds the orthographic projection of the support surface 412 on the substrate 10. The support surface 412 is exposed to the pixel openings 201. The dimming part 210 is located on the side of the second adjustment surface 411 facing away from the substrate 10.

[0069] Optionally, in the direction perpendicular to the substrate 10, the thickness of the protrusion 410 is greater than or equal to 1 μm, for example, 1 μm, 1.2 μm, 1.5 μm, 2 μm, or 2.5 μm.

[0070] Optionally, the first adjustment surface 211 includes an inclined surface; and / or at least a portion of the second adjustment surface 411 is a curved surface.

[0071] Optionally, the display panel also includes a color filter layer 50 located on the side of the pixel definition layer 20 away from the substrate 10. The color filter layer 50 includes a light-shielding portion 510 and a plurality of color resist units 520. The light-shielding portion 510 surrounds and forms a plurality of light-transmitting openings 511. The color resist units 520 fill the light-transmitting openings 511. The light-transmitting openings 511 correspond to the pixel openings 201. The orthogonal projection of the openings on the substrate 10 covers the orthogonal projection of the pixel openings 201 on the substrate 10.

[0072] Optionally, the distance d between the edge of the orthogonal projection of the light-transmitting opening 511 on the substrate 10 and the edge of the orthogonal projection of the pixel opening 201 on the substrate 10 is greater than or equal to 0 and less than or equal to 2.5 μm. Optionally, the distance d between the edge of the orthogonal projection of the light-transmitting opening 511 on the substrate 10 and the edge of the orthogonal projection of the pixel opening 201 on the substrate 10 is greater than or equal to 0 and less than or equal to 1 μm. This reduces the difficulty of fabricating the first adjustment surface 211.

[0073] Optionally, the display panel further includes a fill layer 60 located between the color filter layer 50 and the pixel definition layer 20. Optionally, the first adjustment surface 211 includes an inclined surface, and the angle θ between the first adjustment surface 211 and the plane where the substrate 10 is located is greater than a preset angle θ0, the preset angle θ0 satisfying formula (1):

[0074] θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1),

[0075] Where h is the distance between the surface of the color filter layer 50 near the substrate 10 and the end of the first adjustment surface 211 near the pixel opening 201, and n is the refractive index of the filling layer 60. Optionally, the filling layer 60 includes at least one of an encapsulation layer and a touch layer.

[0076] Thirdly, embodiments of this application provide a display device, which includes the display panel described in the above embodiments.

[0077] Figure 9 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Figure 9 As shown, display device 800 is a product with image display capabilities. For example, display device 800 can be used to display static images, such as pictures or photographs. Display device 800 can also be used to display moving images, such as videos.

[0078] The display device 800 can be a laptop computer, mobile phone, handheld or portable computer, camera, camcorder, in-vehicle smart central control screen, calculator, smartwatch, GPS navigator, electronic photo, electronic billboard or sign, projector, etc.

[0079] The display device 800 includes the display panel provided in any of the above embodiments. The display panel may be an organic light-emitting diode display panel or a quantum dot electroluminescent display panel.

[0080] In addition, the display device 800 can also perform functions such as taking photos, recording videos, fingerprint recognition, and facial recognition. Accordingly, the display device 800 also includes at least one functional module for implementing the above functions, such as an under-display camera or an under-display fingerprint recognition sensor.

[0081] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0082] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0083] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0084] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0085] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

[0086] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display panel, characterized in that, include: substrate; A light-emitting device layer is located on one side of the substrate. The light-emitting device layer includes multiple light-emitting units. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the substrate. The first electrode has multiple spaced-apart dimming structures on its surface facing away from the substrate; alternatively, the first electrode forms multiple spaced-apart dimming structures. The orthographic projection of the dimming structure onto the substrate is a regular polygon with 5 or more sides or a circle.

2. The display panel according to claim 1, characterized in that, In the direction perpendicular to the substrate, the thickness of the dimming structure is greater than or equal to 20 nm and less than or equal to 300 nm; Preferably, the radius of the circumcircle of the regular polygon or the radius of the circle is greater than 2λ / n, where λ is the wavelength of the light emitted by the light-emitting functional layer and n is the refractive index of the dimming structure; Preferably, the distance between the centers of the circumcircles of two adjacent regular polygons or the centers of two adjacent circles is greater than 2λ; Preferably, the material of the dimming structure includes indium tin oxide.

3. The display panel according to claim 1, characterized in that, The first electrode includes a first conductive layer and a second conductive layer sequentially stacked along a direction away from the substrate, and the sum of the thicknesses of the first conductive layer and the second conductive layer is less than or equal to 120 nm along a direction perpendicular to the substrate; or, the first electrode includes a third conductive layer, a first conductive layer, and a second conductive layer sequentially stacked along a direction away from the substrate, and the sum of the thicknesses of the first conductive layer, the second conductive layer, and the third conductive layer is less than or equal to 120 nm along a direction perpendicular to the substrate. Preferably, the material of the first conductive layer includes silver; and / or, the material of the second conductive layer includes indium tin oxide; and / or, the material of the third conductive layer includes indium tin oxide. Preferably, the first electrode further includes a first dimming layer, which is located between the first conductive layer and the second conductive layer; or, the first dimming layer is located on the side of the second conductive layer away from the substrate. Preferably, the material of the first dimming layer includes silver nanowires; Preferably, the display panel further includes a pixel definition layer located on one side of the substrate, the pixel definition layer enclosing a plurality of pixel openings, at least a portion of the light-emitting unit being located within the pixel openings, and the pixel openings exposing at least a portion of the first electrode; Preferably, the display panel further includes an encapsulation layer located on the side of the light-emitting unit away from the substrate, and the encapsulation layer includes a first sub-encapsulation layer, a second sub-encapsulation layer and a third sub-encapsulation layer stacked sequentially along the direction away from the substrate; Preferably, the display panel further includes a touch layer located on the side of the encapsulation layer opposite to the substrate; Preferably, the display panel further includes a color filter layer located on the side of the touch layer opposite to the substrate. The color filter layer includes a light-shielding portion and a plurality of color resist units. The light-shielding portion surrounds and forms a plurality of light-transmitting openings. The color resist units fill the light-transmitting openings. The light-transmitting openings correspond to the pixel openings. The orthographic projection of the light-transmitting openings on the substrate covers the orthographic projection of the pixel openings on the substrate.

4. The display panel according to claim 1, characterized in that, Also includes: A pixel definition layer is located on one side of the substrate. The pixel definition layer encloses a plurality of pixel openings. At least a portion of the light-emitting unit is located within the pixel openings. The pixel openings expose at least a portion of the first electrode. The pixel definition layer includes a dimming section disposed near the pixel openings. The orthographic projection of the dimming section on the substrate surrounds the pixel openings. The surface of the dimming section facing away from the substrate includes a first adjustment surface. In the direction of the dimming section pointing towards the pixel openings, the distance between the first adjustment surface and the substrate gradually increases. Preferably, the display panel further includes an organic layer located on the side of the first electrode near the substrate. The organic layer forms a plurality of protrusions, which correspond to the pixel openings. The surface of the protrusions facing away from the substrate includes a support surface and a second adjustment surface. The orthographic projection of the second adjustment surface on the substrate surrounds the orthographic projection of the support surface on the substrate. The support surface is exposed to the pixel openings. The dimming part is located on the side of the second adjustment surface facing away from the substrate. Preferably, the support surface is provided with a plurality of spaced protrusions, the protrusions are correspondingly provided with the dimming structure, and the orthographic projection of the protrusion on the substrate is located within the orthographic projection of the corresponding dimming structure on the substrate; Preferably, the material of the boss includes polymethyl methacrylate; Preferably, the thickness of the protrusion is greater than or equal to 1 μm in the direction perpendicular to the substrate; Preferably, the first adjustment surface includes an inclined surface, and / or, at least a portion of the second adjustment surface is a curved surface; Preferably, the first electrode at least covers the support surface; Preferably, the orthographic projection of the first electrode on the substrate covers the orthographic projection of the protrusion on the substrate; Preferably, the orthographic projection of the second electrode on the substrate covers the orthographic projection of the pixel opening on the substrate and the orthographic projection of the first adjustment surface on the substrate; Preferably, the display panel further includes a second dimming layer, at least located on the side of the first adjustment surface opposite to the substrate; Preferably, the second dimming layer is located between the first adjustment surface and the second electrode, or the second dimming layer is located on the side of the second electrode away from the substrate; Preferably, the material of the second dimming layer includes silver nanowires; Preferably, the material of the pixel definition layer includes a light-transmitting material.

5. The display panel according to claim 4, characterized in that, It also includes a color filter layer located on the side of the pixel definition layer away from the substrate. The color filter layer includes a light-shielding part and a plurality of color resisting units. The light-shielding part surrounds and forms a plurality of light-transmitting openings. The color resisting units fill the light-transmitting openings. The light-transmitting openings correspond to the pixel openings. The orthogonal projection of the light-transmitting openings on the substrate covers the orthogonal projection of the pixel openings on the substrate. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 2.5 μm; Preferably, the distance d between the edge of the orthogonal projection of the light-transmitting opening on the substrate and the edge of the orthogonal projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 1 μm; Preferably, the display panel further includes a fill layer located between the color filter layer and the pixel definition layer; Preferably, the first adjustment surface includes an inclined surface, and the angle θ between the first adjustment surface and the plane where the substrate is located is greater than a preset angle θ0, wherein the preset angle θ0 satisfies formula (1): θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1), Where h is the vertical distance between the surface of the color filter layer near the substrate and the end of the first adjustment surface near the pixel opening, and n is the refractive index of the filling layer; Preferably, the filling layer includes at least one of an encapsulation layer and a touch layer.

6. A display panel, characterized in that, include: substrate; A pixel definition layer is located on one side of the substrate. The pixel definition layer encloses a plurality of pixel openings. The pixel definition layer includes a dimming part disposed near the pixel opening. The orthographic projection of the dimming part on the substrate surrounds the pixel opening. The surface of the dimming part away from the substrate includes a first adjustment surface. In the direction of the dimming part pointing to the pixel opening, the distance between the first adjustment surface and the substrate gradually increases. The second dimming layer is located at least on the side of the first dimming surface away from the substrate, so as to reduce the reflection of light irradiated on the first dimming surface.

7. The display panel according to claim 6, characterized in that, The display panel further includes a light-emitting device layer, which includes a plurality of light-emitting units. At least a portion of the light-emitting units is located within the pixel opening. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode that are sequentially stacked along a direction away from the substrate. The pixel opening exposes a portion of the first electrode. The orthographic projection of the second electrode on the substrate covers the orthographic projection of the pixel opening on the substrate and the orthographic projection of the first adjustment surface on the substrate. Preferably, the second dimming layer is located between the first adjustment surface and the second electrode, or the second dimming layer is located on the side of the second electrode away from the substrate; Preferably, the material of the second dimming layer includes silver nanowires; Preferably, the material of the pixel definition layer includes a light-transmitting material.

8. The display panel according to claim 6, characterized in that, Also includes: An organic layer is located between the substrate and the pixel definition layer. The organic layer forms a plurality of protrusions, which correspond to the pixel openings. The surface of the protrusions facing away from the substrate includes a support surface and a second adjustment surface. The orthographic projection of the second adjustment surface on the substrate surrounds the orthographic projection of the support surface on the substrate. The support surface is exposed to the pixel openings. The dimming part is located on the side of the second adjustment surface facing away from the substrate. Preferably, the thickness of the protrusion is greater than or equal to 1 μm in the direction perpendicular to the substrate; Preferably, the first adjustment surface includes an inclined surface, and / or, at least a portion of the second adjustment surface is a curved surface.

9. The display panel according to claim 6, characterized in that, It also includes a color filter layer located on the side of the pixel definition layer away from the substrate. The color filter layer includes a light-shielding part and a plurality of color resisting units. The light-shielding part surrounds and forms a plurality of light-transmitting openings. The color resisting units fill the light-transmitting openings. The light-transmitting openings correspond to the pixel openings. The orthogonal projection of the light-transmitting openings on the substrate covers the orthogonal projection of the pixel openings on the substrate. Preferably, the distance d between the edge of the orthographic projection of the light-transmitting opening on the substrate and the edge of the orthographic projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 2.5 μm; Preferably, the distance d between the edge of the orthogonal projection of the light-transmitting opening on the substrate and the edge of the orthogonal projection of the pixel opening on the substrate is greater than or equal to 0 and less than or equal to 1 μm; Preferably, the display panel further includes a fill layer located between the color filter layer and the pixel definition layer; Preferably, the first adjustment surface includes an inclined surface, and the angle θ between the first adjustment surface and the plane where the substrate is located is greater than a preset angle θ0, wherein the preset angle θ0 satisfies formula (1): θ0=(arctan(d / h)+arcsin(sin8° / n)) / 2 (1), Where h is the distance between the surface of the color filter layer near the substrate and the end of the first adjustment surface near the pixel opening, and n is the refractive index of the filling layer; Preferably, the filling layer includes at least one of an encapsulation layer and a touch layer.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

Images