Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a display area. The display panel comprises a substrate, a light-emitting structure layer and a microstructure layer. The light-emitting structure layer is located on one side of the substrate and located in the display area, and the light-emitting structure layer comprises a plurality of sub-pixels. The microstructure layer is located on the side, away from the substrate, of the light-emitting structure layer. The microstructure layer is located in the display area and comprises a plurality of microstructures arranged in the direction parallel to the substrate. The surface of the side, away from the substrate, of the microstructure protrudes in the direction away from the substrate and is a curved surface, and the microstructure layer is configured to reduce the diffraction intensity generated when ambient light is incident to the display panel.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) technology is a self-luminous display technology based on organic materials. OLEDs have characteristics such as high contrast ratio, fast response speed, wide viewing angle, low power consumption, and support for flexible display.

[0003] Existing OLEDs are prone to color separation during the off-screen state, which affects the user experience. Summary of the Invention

[0004] This application provides a display panel and a display device.

[0005] In a first aspect of this application, a display panel is provided. The display panel includes a display area; the display panel includes:

[0006] A substrate;

[0007] A light-emitting structure layer, located on one side of the substrate and within the display area; the light-emitting structure layer includes a plurality of sub-pixels;

[0008] A microstructure layer, located on the side of the light-emitting structure layer away from the substrate; the microstructure layer is within the display area and includes a plurality of microstructures arranged in a direction parallel to the substrate; the surface of the microstructure away from the substrate protrudes away from the substrate and is curved, and the microstructure is configured to reduce the diffraction intensity generated by ambient light incident on the display panel.

[0009] In one embodiment, the display panel further includes a packaging layer located on the side of the light-emitting structure layer away from the substrate, and the microstructure layer is located on the side of the packaging layer away from the substrate.

[0010] In one embodiment, the display panel further includes a light-shielding layer located on the side of the packaging layer away from the substrate; the light-shielding layer is provided with a plurality of openings, and the orthographic projection of each sub-pixel on the substrate falls within one of the openings; the microstructure layer is located on the side of the light-shielding layer away from the substrate.

[0011] In one embodiment, the display panel further includes a first planarization layer and a second planarization layer; the first planarization layer is located on the side of the light-shielding layer away from the substrate; the microstructure layer is located on the surface of the first planarization layer away from the substrate, and the second planarization layer covers the microstructures of the microstructure layer, and the surface of the second planarization layer away from the substrate is planar.

[0012] In one embodiment, the display panel further includes a light-shielding layer on a side of the light-emitting structure layer away from the substrate; the light-shielding layer is provided with a plurality of openings, and the orthographic projection of each sub-pixel on the substrate falls within one of the openings; the micro-structure layer is located between the light-shielding layer and the light-emitting structure layer; at least a part of the orthographic projection of the micro-structure on the substrate falls within the orthographic projection of the opening on the substrate.

[0013] In one embodiment, the shape of the micro-structure is spherical or spherical segment-shaped.

[0014] In one embodiment, the value range of the maximum width of the orthographic projection of the micro-structure on the substrate is 100 nm to 10 μm.

[0015] In one embodiment, the distance between adjacent micro-structures is less than half of the maximum width of the orthographic projection of the micro-structure on the substrate.

[0016] In one embodiment, adjacent micro-structures are in contact, or there is a gap between adjacent micro-structures.

[0017] In one embodiment, the micro-structure layer includes a plurality of micro-structure units arranged in an array, each micro-structure unit includes at least one sub-unit; each sub-unit includes a plurality of micro-structures, and the plurality of micro-structures in the same sub-unit are arranged into a plurality of micro-structure groups, each micro-structure group includes a plurality of micro-structures arranged along its extending direction, and the plurality of micro-structure groups are arranged in a direction perpendicular to the extending direction of the micro-structure group;

[0018] In the same sub-unit, the micro-structures in each micro-structure group and all the micro-structures in the adjacent micro-structure group are arranged in a staggered manner in a direction perpendicular to the extending direction of the micro-structure group; or, in the same sub-unit, each micro-structure in each micro-structure group and one micro-structure in the adjacent micro-structure group are arranged in a direction perpendicular to the extending direction of the micro-structure group.

[0019] In one embodiment, the micro-structure layer includes a plurality of micro-structure units arranged in an array, each micro-structure unit includes a plurality of sub-units; each sub-unit includes a plurality of micro-structures, and the plurality of micro-structures in the same sub-unit are arranged into a plurality of micro-structure groups, each micro-structure group includes a plurality of micro-structures arranged along its extending direction, and the plurality of micro-structure groups are arranged in a direction perpendicular to the extending direction of the micro-structure group;

[0020] In the same micro-structure unit, the extending directions of the micro-structure groups in all the sub-units are the same; or, in the same micro-structure unit, the included angle between the extending directions of the micro-structure groups of at least two sub-units is an acute angle.

[0021] In one embodiment, the microstructure layer includes a plurality of microstructure units arranged in an array, and each microstructure unit includes a plurality of subunits; each subunit includes a plurality of the microstructures; the sizes of the microstructures in the same subunit are the same, and the sizes of the microstructures in different subunits are different.

[0022] In one embodiment, the microstructure layer includes a vacancy formed by enclosing a plurality of the microstructures, and no microstructure is provided in the vacancy, and the vacancy can accommodate at least one of the microstructures.

[0023] In one embodiment, the microstructure layer includes a refractive layer attached to the microstructures, and the refractive layer is located on the side of the microstructure layer away from the substrate; the refractive index of the microstructures is 1.4 to 1.7; the refractive index of the refractive layer is less than 1.2 or greater than 1.7.

[0024] The second aspect of the present application provides a display device, and the display device includes a power supply circuit and the above-mentioned display panel; the power supply circuit is used to supply power to the display panel.

[0025] The display panel of the present application includes a microstructure layer, and the microstructure layer includes a plurality of microstructures. When ambient light is incident on the microstructure layer, since the surface on the side of the microstructures away from the substrate is curved, the microstructures will refract or reflect the incident ambient light and deviate from the original propagation path, so that the diffraction intensity of the light in a specific direction decreases; and, when the reflected light passes through the microstructure layer, the phase of the light changes, and the condition for stable interference that could occur after passing through each sub-pixel is changed, so that the bright and dark fringes of color separation are disrupted, and the light intensity at each place is more uniform, improving the user experience.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0028] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0029] Figure 2 It is a schematic structural diagram of a display panel provided by another embodiment of the present application;

[0030] Figure 3 It is a schematic structural diagram of a display panel provided by still another embodiment of the present application;

[0031] Figure 4 Schematic structural diagram of a display panel provided by another embodiment of the present application;

[0032] Figure 5 Schematic structural diagram of a display panel provided by another embodiment of the present application;

[0033] Figure 6 Partial structural diagram of the microstructure layer of a display panel provided by an embodiment of the present application;

[0034] Figure 7 Schematic diagram of the arrangement mode of the microstructure provided by an embodiment of the present application;

[0035] Figure 8 Schematic diagram of the arrangement mode of the microstructure provided by another embodiment of the present application;

[0036] Figure 9 Partial structural diagram of the microstructure layer of a display panel provided by another embodiment of the present application;

[0037] Figure 10 Partial structural diagram of the microstructure layer of a display panel provided by another embodiment of the present application;

[0038] Figure 11 Schematic diagram of the spacing relationship of the microstructure provided by an embodiment of the present application;

[0039] Figure 12 Schematic diagram of the spacing relationship of the microstructure provided by another embodiment of the present application. Detailed implementation manners

[0040] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0041] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), then such terms are only used to explain the relative positional relationships and movement conditions between components in a certain specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0042] The following will describe the display panel and the display device according to the embodiments of the present application in detail with reference to the accompanying drawings. Without conflict, the features in the following embodiments and implementation manners can be supplemented or combined with each other.

[0043] An embodiment of the present application provides a display panel, and the display panel includes a display area. As Figure 1 shown, the display panel includes a substrate 10, a light-emitting structure layer 50, and a microstructure layer 90.

[0044] Among them, the light-emitting structure layer 50 is located on one side of the substrate 10 and is located in the display area. The light-emitting structure layer 50 includes a plurality of sub-pixels 51. The microstructure layer 90 is located on the side of the light-emitting structure layer 50 away from the substrate 10. The microstructure layer 90 is located in the display area and includes a plurality of microstructures 91 arranged in a direction parallel to the substrate 10. The surface of the microstructure 91 away from the substrate 10 protrudes away from the substrate 10 and is a curved surface, and the microstructure layer 90 is configured to reduce the diffraction intensity generated by ambient light incident on the display panel.

[0045] The arrangement of the sub-pixels of the display panel has periodicity, and these periodically arranged structures are equivalent to a series of tiny gratings. When external ambient light is incident on the display panel and passes through the periodic structure, the light is bent and superimposed to form diffraction fringes with alternating light and dark. Moreover, since the respective film layers above the sub-pixels may not be completely flat, stray light will also be generated when the light passes through these film layers.

[0046] The display panel of the present application includes a microstructure layer 90, and the microstructure layer 90 includes a plurality of microstructures 91. When ambient light is incident on the microstructure layer 90, since the surface of the microstructure 91 away from the substrate 10 is a curved surface, the microstructure 91 will refract or reflect the incident ambient light and deviate from the original propagation path, reducing the diffraction intensity of the light in a specific direction; moreover, when the reflected light passes through the microstructure layer 90, the phase of the light changes, and the condition for stable interference that could occur after passing through each sub-pixel is changed, so that the color-separated light and dark fringes are disrupted, and the light intensity at each place is more uniform, improving the user experience.

[0047] In one embodiment, as Figure 1 shown, the substrate 10 can be a flexible substrate or a rigid substrate. The material of the flexible substrate may include one or more of polyimide, polyethylene terephthalate, polycarbonate, and organic resin materials, and the organic resin materials may include epoxy resin, triazine, silicone resin, or polyimide, etc. The rigid substrate includes any one of, such as, a glass substrate, a quartz substrate, a sapphire substrate, etc.

[0048] In one embodiment, as Figure 1As shown, the display panel further includes a driving circuit layer 20 located between the substrate 10 and the light-emitting structure layer 50. The driving circuit layer 20 includes a plurality of pixel circuits for driving the sub-pixels 51. The pixel circuits and the sub-pixels 51 can be in one-to-one correspondence, and each pixel circuit is used to drive the corresponding sub-pixel 51.

[0049] In one embodiment, as Figure 1 shown, the pixel circuit includes a thin-film transistor 21. The thin-film transistor 21 may include an active layer 211, a gate 212, a first electrode 213, and a second electrode 214. One of the first electrode 213 and the second electrode 214 is a source electrode, and the other is a drain electrode. The pixel circuit may further include a capacitor 42, which includes a first capacitor plate 421 and a second capacitor plate 422 located on the side of the first capacitor plate 421 away from the substrate 10. The pixel circuit layer may further include a plurality of signal lines, such as scan signal lines, data signal lines, power supply signal lines, etc. Figures 2 to 5 The structure of the pixel circuit in the embodiment of Figure 1 is similar to that in

[0050] In one embodiment, as Figure 1 shown, each sub-pixel 51 of the light-emitting structure layer 50 includes a first electrode 511, a light-emitting material layer 512 located on the side of the first electrode 511 away from the substrate 10, and a second electrode 513 located on the side of the light-emitting material layer 512 away from the substrate 10. One of the first electrode 511 and the second electrode 513 is an anode, and the other is a cathode. In some embodiments, the first electrode 511 is an anode, the second electrode 513 is a cathode, the cathode is a common electrode, and the cathodes of all sub-pixels 51 are connected together to form a surface electrode. In some embodiments, the light-emitting material layer 512 is an organic light-emitting material layer.

[0051] In one embodiment, as Figure 1 shown, the display panel further includes a pixel defining layer 40 located on the side of the driving circuit layer 20 away from the substrate 10. The pixel defining layer 40 is provided with a plurality of pixel openings, and the pixel openings and the sub-pixels 51 can be in one-to-one correspondence. Each pixel opening exposes a partial surface of the first electrode 511 of the corresponding sub-pixel 51, and at least a part of the second electrode 513 and the light-emitting material layer 512 are located within the pixel opening. Each pixel opening defines a light-emitting region of a sub-pixel 51.

[0052] In one embodiment, as Figure 1As shown, the display panel further includes a packaging layer 60 on the side of the light-emitting structure layer 50 away from the substrate 10. The packaging layer 60 may be a thin-film packaging layer, which includes alternately arranged organic material layers and inorganic material layers, and the layer with the largest distance from the substrate 10 is an inorganic material layer. In some embodiments, the packaging layer 60 includes two inorganic material layers 61 and an organic material layer 62 located between the two inorganic material layers 61.

[0053] In one embodiment, as Figure 1 shown, the display panel further includes a touch layer 70 on the side of the packaging layer 60 away from the substrate 10. The touch layer 70 includes a first electrode layer 71 and a second electrode layer 72 on the side of the first electrode layer 71 away from the substrate 10. A first insulating material layer 73 located between the first electrode layer 71 and the second electrode layer 72 and a second insulating material layer 74 on the side of the second electrode layer 72 away from the substrate 10. The second insulating material layer 74 covers the second electrode layer 72. The second electrode layer 72 may include a plurality of first touch electrodes, a plurality of second touch electrodes, and a plurality of first connection parts. The first touch electrode layer 11 includes a plurality of second connection parts. Adjacent first touch electrodes can be connected through the first connection parts, and adjacent second touch electrodes can be electrically connected through the second connection parts. The materials of the first insulating material layer 73 and the second insulating material layer 74 can be inorganic materials or organic materials.

[0054] In one embodiment, as Figure 1 shown, the display panel further includes a light-shielding layer 81 and a color filter layer 82 on the side of the packaging layer 60 away from the substrate 10. Each light-shielding layer 81 is provided with a plurality of openings 811, and the orthographic projection of the light-emitting area of each sub-pixel 51 on the substrate 10 falls within the orthographic projection of one of the openings 811 on the substrate 10. The color filter layer 82 includes a plurality of color filter parts 821, and the orthographic projection of each color filter part 821 on the substrate 10 covers the orthographic projection of one of the openings 811 on the substrate 10. Figure 1 In the embodiment shown, each color filter part 821 is partially located within one opening 811 and partially covers the light-shielding layer 81. The light-emitting color of each sub-pixel 51 is the same as the color of the corresponding color filter part 821. For example, the light-emitting structure layer 50 includes sub-pixels with a first color, sub-pixels with a second color, and sub-pixels with a third color; the color filter layer 82 includes a first color filter part, a second color filter part, and a third color filter part. In some embodiments, the first color may be red, the second color may be blue, and the third color may be green.

[0055] In one embodiment, as Figure 1 and Figure 2As shown, the microstructure layer 90 is located on the side of the light-emitting structure layer 50 away from the substrate 10. By disposing the microstructure layer 90 on the side of the encapsulation layer 60 away from the substrate 10, compared with disposing the microstructure layer 90 on the surface of the light-emitting structure layer 50, the flatness of the film layer in contact with the microstructure layer 90 is better, which helps to improve the quality of the microstructures 91 in the microstructure layer 90.

[0056] In one embodiment, when the microstructure layer 90 is located between the light-emitting structure layer 50 and the light-shielding layer 81, at least a part of the microstructures 91 in the microstructure layer 90 falls within the opening 811 in the positive projection on the substrate 10. When the microstructure layer 90 is disposed between the encapsulation layer 60 and the light-shielding layer 81, after the light is incident on the display panel, it needs to pass through other film layers (such as the light-shielding layer 81 and the color filter layer 82) before reaching the microstructure layer 90. In this way, the amount of light reflected by the microstructure layer 90 can be reduced. Specifically, the microstructure layer 90 can be located between the encapsulation layer 60 and the touch layer 70, or, as Figure 2 shown, the microstructure layer 90 is located between the touch layer 70 and the light-shielding layer 81.

[0057] Furthermore, the positive projection of the microstructures 91 in the microstructure layer 90 on the substrate 10 all falls within the opening 811. Since the light-shielding layer 81 will block part of the light, even if no microstructures 91 are provided below the light-shielding layer 81, it will not affect the effect of reducing the diffraction intensity of the light by the microstructure layer 90.

[0058] In one embodiment, as Figure 1 shown, the microstructure layer 90 is located on the side of the light-shielding layer 81 away from the substrate 10. With such a setting, when the external ambient light is incident on the display panel, it directly reaches the microstructure layer 90. The microstructure layer 90 can directly adjust the propagation path of the incident ambient light, reducing the amount of light directly entering the opening 811 of the light-shielding layer 81, thereby reducing the diffraction phenomenon caused by the light.

[0059] In one embodiment, as Figure 1 shown, the display panel further includes a first planarization layer 31, and the first planarization layer 31 is located on the side of the light-shielding layer 81 and the color filter layer 82 away from the substrate 10. The surface of the first planarization layer 31 away from the substrate 10 is substantially planar.

[0060] In one embodiment, as Figure 3As shown, the microstructure layer 90 is located on the surface of the first flat layer 31 away from the substrate 10. The display panel further includes a second flat layer 32. The microstructure layer 90 is located on the surface of the first flat layer 31 away from the substrate 10. The second flat layer 32 covers the microstructures 91 of the microstructure layer 90, and the surface of the second flat layer 32 away from the substrate 10 is planar. The first flat layer 31 can provide support for the microstructures 91 to ensure the stability of the arrangement of the microstructures 91; the second flat layer 32 can fill the gaps between the microstructures 91 to further improve the stability of the microstructures 91, and the surface of the second flat layer 34 away from the substrate 10 is planar, which is convenient for the subsequent arrangement of other structures.

[0061] In one embodiment, as Figure 3 shown, the second flat layer 32 includes a first sub-flat layer 321 and a second sub-flat layer 322 located on the side of the first sub-flat layer 321 away from the substrate 10. The thickness of the first sub-flat layer 321 can be less than the maximum height of the microstructures 91. In other embodiments, as Figure 4 shown, the second flat layer 32 may only include a single film layer.

[0062] In one embodiment, both the first flat layer 31 and the second flat layer 32 are organic film layers.

[0063] In one embodiment, as Figure 4 shown, the microstructure layer 90 includes a refractive layer 92 attached to the microstructures 91, and the refractive layer 92 is located on the side of the microstructure layer 90 away from the substrate 10. The refractive index of the microstructures 91 is 1.4 to 1.7. The refractive index of the microstructures 91 can be, for example, 1.4, 1.5, 1.6, 1.7, etc. The refractive index of the refractive layer 92 is less than 1.2 or greater than 1.7. The refractive index of the refractive layer 92 can be, for example, 1.0, 1.1, 1.8, 1.9, etc.

[0064] When light enters the refractive layer 92 from the microstructures 91 or enters the microstructures 91 from the refractive layer 92, the light will refract and change the propagation direction, making the propagation path of the light in the microstructure layer 90 more complex, and scattering the light that might otherwise produce diffraction in different directions, thereby reducing the light diffraction intensity.

[0065] In one embodiment, as Figure 1 and Figure 5As shown, the shape of the microstructure 91 is spherical or spherical segment-shaped. Among them, the spherical segment shape refers to the remaining part after a sphere is cut off by a plane. The spherical segment-shaped microstructure 91 can be, for example, a hemisphere. The surface of the spherical or spherical segment-shaped microstructure 91 is a continuous and smooth curved surface. When light is incident on the surface of the microstructure, refraction and reflection will occur at different positions on the curved surface, which is conducive to reducing the diffraction intensity of the incident light.

[0066] In one embodiment, the maximum width of the orthographic projection of the microstructure 91 on the substrate 10 ranges from 100 nm to 10 μm. For example, when the shape of the microstructure 91 is spherical or spherical segment-shaped, the diameter of the microstructure 91 ranges from 100 nm to 10 μm. The wavelength range of visible light in ambient light is usually from 400 nm to 700 nm. Therefore, through the above settings, it can be ensured that the microstructure 91 effectively refracts or reflects light waves in the visible light band, which is conducive to reducing the generation of light diffraction and stray light.

[0067] In one embodiment, the microstructure layer includes a plurality of microstructure units arranged in an array. Figure 6 is a schematic diagram of a microstructure unit 901. As Figure 6 shown, each microstructure unit 901 includes at least one subunit 902. Each subunit 902 includes a plurality of microstructures 91. The plurality of microstructures 91 in the same subunit 902 are arranged into a plurality of microstructure groups 911. Each microstructure group 911 includes a plurality of microstructures 91 arranged along its extending direction, and the plurality of microstructure groups 911 are arranged in a direction perpendicular to the extending direction of the microstructure group 911.

[0068] As Figure 6 shown, this microstructure unit 901 includes four subunits 902. Taking the subunit 902 in area A as an example, this subunit 902 includes four microstructure groups 911 extending along the first direction X, and the four microstructure groups 911 are arranged in the second direction Y, where the first direction X is perpendicular to the second direction Y.

[0069] In the same subunit 902, the microstructures 91 in each microstructure group 911 and all the microstructures 91 in the adjacent microstructure group 911 are staggeredly arranged in a direction perpendicular to the extending direction of the microstructure group 911. As Figure 6 shown, the straight lines passing through the geometric centers of each microstructure 91 in the microstructure group 911a and extending along the second direction Y do not pass through the geometric centers of the microstructures 91 in the microstructure group 911b. The staggered arrangement of the microstructures 91 can cause light to be refracted or reflected in multiple directions, which is conducive to destroying the coherence conditions of light waves, avoiding the formation of obvious diffraction fringes of light, and reducing the diffraction intensity of light.

[0070] Specifically, asFigure 7 As shown, a partial microstructure 91 in a subunit 902 is shown in the figure. The line connecting the geometric centers of the microstructure 91a and the microstructure 91b is inclined, and the included angle with the line connecting the geometric centers of the microstructure 91a and the microstructure 91c is 60°, that is Figure 7 Among the seven microstructures 91 shown, one of the microstructures 91 is surrounded by the other six microstructures 91, and the geometric centers of the six microstructures 91 on the peripheral side are connected in sequence to form a substantially regular hexagon.

[0071] In another embodiment, in the same subunit 902, each microstructure 91 in each microstructure group 911 and a microstructure 91 in an adjacent microstructure group 911 are arranged in a direction perpendicular to the extending direction of the microstructure group 911. As Figure 8 shown, the straight lines passing through the geometric centers of each microstructure 91 in the microstructure group 911a and extending along the second direction Y all pass through the geometric centers of some microstructures 91 in the microstructure group 911b. When the microstructures 91 are arranged in the above manner, the diffraction intensity of ambient light can also be reduced, and the above arrangement is beneficial to reducing the manufacturing difficulty and manufacturing cost of the microstructure layer 90.

[0072] In one embodiment, as Figure 6 shown, in the same microstructure unit 901, the extending directions of the microstructure groups 911 in all the subunits 902 are the same. For example, in Figure 6 , the microstructure groups 911 in the four subunits 902 of the microstructure unit 901 all extend along the first direction X. By setting like this, the manufacturing difficulty of the microstructure unit 901 can be reduced and the production efficiency can be improved.

[0073] In another embodiment, in the same microstructure unit 901, the included angle between the extending directions of the microstructure groups 911 of at least two subunits 902 is an acute angle. As Figure 9 shown, the extending directions of the microstructure groups 911 in the four subunits 902 of the microstructure unit 901 are all different, and the included angle between the extending directions of the microstructure groups 911 in any two subunits 902 is an acute angle. Through the above setting, the light incident on different subunits will be refracted or reflected in multiple directions, which is beneficial to avoiding the formation of diffraction fringes by the incident light, and further reducing the diffraction intensity generated when the ambient light is incident on the display panel.

[0074] In one embodiment, as Figure 6 shown, each microstructure unit 901 includes a plurality of subunits 902. Each subunit 902 includes a plurality of microstructures 91. The sizes of the microstructures 91 in the same subunit 902 are the same, and the sizes of the microstructures 91 in different subunits 902 are different.

[0075] It should be noted that the sizes of the microstructures 91 in the same sub-unit 902 being the same means being substantially the same. For example, if the difference between the maximum width and the minimum width of the orthographic projection of the microstructures 91 in the same sub-unit 902 on the substrate 10 is less than 10% of the maximum width, it can be considered that the microstructures 91 in the same sub-unit 902 are of the same size.

[0076] In another embodiment, the microstructures 91 of different sizes are randomly distributed in the microstructure layer 90.

[0077] In one embodiment, the number of sub-units 902 included in different microstructure units 901 can be different. The number of microstructures 91 included in different sub-units 902 can also be different.

[0078] In one embodiment, as Figure 10 shown, the microstructure layer 90 includes voids 93 formed by enclosing a plurality of the microstructures 91. The voids 93 are not provided with the microstructures, and the voids 93 can accommodate at least one of the microstructures. In the actual manufacturing process, due to process limitations, there may be cases where microstructures 91 are not formed in some areas of the microstructure layer 90, which has little impact on the effect of the microstructure layer 90 in reducing the diffraction degree of ambient light.

[0079] In one embodiment, as Figure 11 shown, there are gaps between adjacent microstructures 91. Such a setting can reduce the manufacturing difficulty of the microstructure layer 90 and reduce the defects generated during the manufacturing process.

[0080] In one embodiment, as Figure 11 shown, the distance between adjacent microstructures 91 is less than half of the maximum width of the orthographic projection of the microstructures 91 on the substrate 10. Such a setting can increase the number of microstructures 91 in the microstructure layer 90, and further help to reduce the possibility that ambient light incident on the display panel directly passes through the microstructure layer 90 without refraction or reflection by the microstructures 91, which is beneficial to reducing the occurrence of diffraction phenomena. In Figure 11 it, taking the microstructures 91 being spherical as an example, the radius of the microsphere is r, the distance between adjacent microspheres is d, and the distance d is less than the radius r of the microsphere.

[0081] In one embodiment, as Figure 12 shown, adjacent microstructures 91 are in contact, and a tight and uniform structure layer can be formed. The tight arrangement makes the gaps between the microstructures 91 extremely small, and more incident light can pass through the refraction or reflection of the microstructures 91, which can maximize the reduction of the diffraction intensity of ambient light incident on the display panel.

[0082] An embodiment of the present application further provides a display device, and the display device includes the above-mentioned display panel.

[0083] In one embodiment, the display panel includes a housing, and the display panel is disposed within the housing.

[0084] The present application does not make specific limitations on the applicability of the display device, and it can be any product or component with a display function such as a television, a laptop computer, a tablet computer, a wearable display device, a mobile phone, an e-book, an electronic price tag, a digital photo frame, an advertising light box, etc.

[0085] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: Comprising a display area; the display panel comprises: substrate; A light emitting structure layer is located on one side of the substrate and in the display area; the light emitting structure layer includes a plurality of sub-pixels; A microstructure layer is located on a side of the light-emitting structure layer away from the substrate; the microstructure layer is located in the display area, and includes a plurality of microstructures arranged in a direction parallel to the substrate; a surface of the microstructure on a side away from the substrate is convex in a direction away from the substrate and is curved; the microstructure layer is configured to reduce the diffraction intensity generated by ambient light incident on the display panel.

2. The display panel according to claim 1, characterized in that: The display panel further includes an encapsulation layer located on a side of the light emitting structure layer away from the substrate, and the microstructure layer is located on a side of the encapsulation layer away from the substrate.

3. The display panel according to claim 2, characterized in that: The display panel also includes a shading layer located on the side of the encapsulation layer away from the substrate; the shading layer is provided with a plurality of openings, and the orthographic projection of the light-emitting area of ​​each sub-pixel on the substrate falls within one of the openings; the microstructure layer is located on the side of the shading layer away from the substrate.

4. The display panel according to claim 3, characterized in that: The display panel also includes a first flat layer and a second flat layer; the first flat layer is located on the side of the light-shielding layer away from the substrate; the microstructure layer is located on the surface of the first flat layer away from the substrate, the second flat layer covers the microstructure of the microstructure layer, and the surface of the second flat layer away from the substrate is flat.

5. The display panel according to claim 1, characterized in that: The display panel also includes a shading layer located on the side of the light-emitting structure layer away from the substrate; the shading layer is provided with a plurality of openings, and the orthographic projection of each sub-pixel on the substrate falls within one of the openings; the microstructure layer is located between the shading layer and the light-emitting structure layer; and the orthographic projection of at least part of the microstructure on the substrate falls within the orthographic projection of the opening on the substrate.

6. The display panel according to claim 1, characterized in that: The shape of the microstructure is spherical or spherical segment.

7. The display panel according to claim 1, characterized in that: The maximum width of the orthographic projection of the microstructure on the substrate ranges from 100 nm to 10 μm.

8. The display panel according to claim 1, characterized in that: The spacing between adjacent microstructures is smaller than half of the maximum width of the orthographic projection of the microstructure on the substrate.

9. The display panel according to claim 1, characterized in that: Adjacent microstructures are in contact with each other, or there are gaps between adjacent microstructures.

10. The display panel according to claim 1, characterized in that: The microstructure layer includes a plurality of microstructure units arranged in an array, each of the microstructure units includes at least one subunit; each of the subunits includes a plurality of microstructures, and the plurality of microstructures in the same subunit are arranged into a plurality of microstructure groups, each of the microstructure groups includes a plurality of microstructures arranged along its extension direction, and the plurality of microstructure groups are arranged along a direction perpendicular to the extension direction of the microstructure group; In the same sub-unit, the microstructures in each microstructure group and all the microstructures in the microstructure group adjacent to it are arranged in a staggered manner in a direction perpendicular to the extension direction of the microstructure group; or, in the same sub-unit, each microstructure in each microstructure group and one microstructure in the microstructure group adjacent to it are arranged in a direction perpendicular to the extension direction of the microstructure group.

11. The display panel according to claim 1, characterized in that: The microstructure layer includes a plurality of microstructure units arranged in an array, each of the microstructure units includes a plurality of subunits; each of the subunits includes a plurality of microstructures, a plurality of microstructure units in the same subunit are arranged in a plurality of microstructure groups, each of the microstructure groups includes a plurality of microstructures arranged along its extension direction, and the plurality of microstructure groups are arranged in a direction perpendicular to the extension direction of the microstructure group; In the same microstructure unit, the extension directions of the microstructure groups in all the subunits are the same; or, in the same microstructure unit, the included angle between the extension directions of the microstructure groups in at least two subunits is an acute angle.

12. The display panel according to claim 1, characterized in that: The microstructure layer includes a plurality of microstructure units arranged in an array, each of the microstructure units includes a plurality of subunits; each of the subunits includes a plurality of the microstructures; the sizes of the microstructures in the same subunit are the same, and the sizes of the microstructures in different subunits are different.

13. The display panel according to claim 1, characterized in that: The microstructure layer includes a space formed by enclosing a plurality of the microstructures, the space is not provided with the microstructure, and the space can accommodate at least one microstructure.

14. The display panel according to claim 1, characterized in that: The microstructure layer includes a refractive layer attached to the microstructure, and the refractive layer is located on a side of the microstructure layer away from the substrate; the refractive index of the microstructure is 1.4-1.7; and the refractive index of the refractive layer is less than 1.2 or greater than 1.

7.

15. A display device, characterized in that: The display device comprises a power supply circuit and the display panel according to any one of claims 1 to 14; the power supply circuit is used to supply power to the display panel.

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