Display panel and display device

Abstract

A display panel and a display device are disclosed. The display panel includes a substrate, a light-emitting structure layer, an optical structure layer, and a light-filtering layer. The light-emitting structure layer is disposed on the substrate and includes a plurality of light-emitting units. The optical structure layer is disposed on the side of the light-emitting structure layer away from the substrate and includes a plurality of first openings. One first opening and one light-emitting unit are overlapped along the thickness direction of the display panel. A portion of the optical structure layer between two adjacent first openings forms a lens, and the lens has a second opening facing away from the substrate. The light-filtering layer is disposed on the side of the light-emitting structure layer away from the substrate and includes a plurality of light-filtering units. Each light-filtering unit includes a color-filtering portion and a filling portion. The color-filtering portion is located within a first opening, and the filling portion of at least one light-filtering unit is located within a second opening to form a support. The surface of the support away from the substrate is flat.

Description

Display panel and display device Technical Field

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

[0002] OLED (Organic Light Emitting Diode) display panels are highly favored by the market due to their many advantages, such as low power consumption, short response time, high luminous efficiency, high brightness, and wide viewing angle. Summary of the Invention

[0003] On one hand, a display panel is provided. The display panel comprises a substrate, a light-emitting structure layer, an optical structure layer, and a filter layer. The light-emitting structure layer is disposed on the substrate and includes a plurality of light-emitting units. The optical structure layer is disposed on the side of the light-emitting structure layer away from the substrate and includes a plurality of first openings. One first opening and one light-emitting unit are overlapped along the thickness direction of the display panel. A portion of the optical structure layer located between two adjacent first openings forms a lens, and the lens has a second opening facing away from the substrate. The filter layer is disposed on the side of the light-emitting structure layer away from the substrate and includes a plurality of filter units. Each filter unit includes a color-filtering portion and a filling portion. The color-filtering portion is located within a first opening, and the filling portion of at least one filter unit is located within a second opening to form a support. The surface of the support on the side away from the substrate is flat.

[0004] In some embodiments, the lens has a second opening, and the filling portions of two adjacent filter units are located within the same second opening.

[0005] In some embodiments, the filling portions of two adjacent filter units are adjacent and do not overlap.

[0006] In some embodiments, the filling portions of two adjacent filter units overlap along the thickness direction of the display panel.

[0007] In some embodiments, the lens has two second openings, which are spaced apart along the line connecting the centers of two adjacent first openings; the filling portions of two adjacent filter units are located within the two second openings.

[0008] In some embodiments, the filling portions of two adjacent filter units are located within two second openings, respectively.

[0009] In some embodiments, the lens includes a spacer between two second openings, at least one of the filling portions of two adjacent filter units having an edge extending to the upper surface of the spacer, and the filling portions of two adjacent filter units being connected on the upper surface of the spacer.

[0010] In some embodiments, the filling portions of two adjacent filter units are respectively a first filling portion and a second filling portion. A portion of the first filling portion is located in one of the two second openings, and another portion of the first filling portion is located in the other of the two second openings. The second filling portion is located in the other second opening.

[0011] In some embodiments, the second opening extends through the lens.

[0012] In some embodiments, the depth of the second opening is less than the maximum thickness of the lens.

[0013] In some embodiments, the display panel further includes a touch structure layer disposed between a substrate and a filter layer, the touch structure layer including metal wires, the metal wires being located within the range of a second opening in a projected image onto the substrate. A support is in contact with and covers the metal wires.

[0014] In some embodiments, the display panel further includes a touch structure layer disposed between a substrate and a filter layer, the touch structure layer including metal wires, which, in a projection onto the substrate, are located between mutually distant boundaries of two second openings. A spacer portion of a lens located between the two second openings contacts the metal wires and covers at least a portion of the metal wires.

[0015] In some embodiments, the support includes a first sub-support and a second sub-support located in two second openings respectively. When the lens passes through the second opening, at least one of the first sub-support and the second sub-support is in contact with the metal wire and covers a portion of the metal wire.

[0016] In some embodiments, the display panel further includes a touch structure layer disposed between a substrate and a filter layer, the touch structure layer including metal wires, which are located within the range of a lens in orthographic projection onto the substrate. The lens is in contact with and covers the metal wires.

[0017] In some embodiments, the edge of the color filter portion of the filter unit extends to the surface of the lens on the side away from the substrate and is connected to the filling portion of the filter unit.

[0018] In some embodiments, the surfaces of the plurality of filter units on the side away from the substrate are flush.

[0019] In some embodiments, the display panel further includes a black matrix disposed on the side of the support away from the substrate, the black matrix defining a plurality of third openings, one of the third openings overlapping with a first opening in the thickness direction of the display panel.

[0020] In some embodiments, the first opening has a first end and a second end, the first end being closer to the substrate than the second end; in a projection onto the substrate, the boundary of the first end lies within the boundary of the second end.

[0021] In some embodiments, the refractive index of the material of the optical structure layer is different from that of the material of the filter layer.

[0022] In some embodiments, the shape of the color filter portion in orthographic projection onto the substrate includes at least one of a circle, an ellipse, and a polygon.

[0023] On the other hand, a display device is provided. The display device includes: a driving circuit and a display panel as described in any of the above embodiments, the display panel being connected to the driving circuit. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0025] Figure 1 is a schematic diagram of the structure of a display device according to some embodiments;

[0026] Figure 2 is a cross-sectional structural diagram of a display panel according to some embodiments;

[0027] Figure 3 is a plan view of a display panel according to some embodiments;

[0028] Figure 4 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0029] Figure 5 is a plan view of a display panel according to some embodiments;

[0030] Figure 6 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0031] Figure 7 is a plan view of a display panel according to some other embodiments;

[0032] Figure 8 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0033] Figure 9 is a plan view of a display panel according to some other embodiments;

[0034] Figure 10 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0035] Figure 11 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0036] Figure 12 is a plan view of a display panel according to some embodiments;

[0037] Figure 13 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0038] Figure 14 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0039] Figure 15 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0040] Figure 16 is a cross-sectional structural diagram of a display panel according to some other embodiments;

[0041] Figure 17 is a cross-sectional structural diagram of a display panel according to some other embodiments. Detailed Implementation

[0042] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0043] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0044] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0045] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0046] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0047] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0048] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0049] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0050] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0051] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0052] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0053] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0054] Embodiments of this disclosure provide a display device 100.

[0055] In some embodiments, as shown in FIG1, the display device 100 includes a display panel 10 and a driving circuit 20, wherein the display panel 10 is connected to the driving circuit 20.

[0056] The display device 100 can be any device that displays moving (e.g., video), stationary (e.g., still image), text, or images. More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, including but not limited to mobile phones, wireless devices, PDAs (Personal Digital Assistants), PIAs (Personal Information Assistants), handheld or portable computers, GPS receivers / navigators, cameras, camcorders, game consoles, wearable devices, flat panel displays, computer monitors, automotive displays (e.g., odometer displays), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic billboards or signs, and aesthetic structures (e.g., displays of images of a piece of jewelry).

[0057] In terms of its form, the display device 100 can be a flat panel display device, a curved display device, or a foldable display device, etc. In terms of its shape, the display device 100 can be rectangular or circular, etc. This disclosure does not impose any limitations in this regard, and adaptive designs can be made according to actual needs.

[0058] For example, the display device 100 may further include a frame and other electronic components, and the display panel 10 may be disposed within the frame. The driving circuit 20 is configured to send driving signals to the display panel 10, such as display driving signals and / or touch driving signals. The display panel 10 displays images and / or performs touch operations under the drive of the driving circuit 20.

[0059] For example, the driving circuit 20 may be disposed on a circuit board, including but not limited to a printed circuit board (PCB) or a flexible printed circuit (FPC).

[0060] In some embodiments, the display panel 10 has a plurality of light-emitting units 21, which may be organic light-emitting diodes (OLEDs). In the display panel 10, a filter unit 41 is provided on the light-emitting side of each light-emitting unit 21. The light emitted by the light-emitting unit 21 is made to appear as a specific color by the filter unit 41, thereby realizing full-color display of the display panel 10.

[0061] During the fabrication of the display panel 10, due to factors such as the precision of the fabrication process or processing equipment, there may be partial overlap and / or spacing between the filter units 41 formed in different fabrication steps.

[0062] Thus, the edges of two adjacent filter units 41 in the display panel 10 may come into contact with each other, forming protrusions. For example, the edges of two adjacent filter units 41 may overlap or stack to form protrusions, with at least a portion of the black matrix BM located on the aforementioned protrusions; or, a gap may also be formed between the edges of two adjacent filter units 41, with at least a portion of the black matrix BM located within the aforementioned gap. Based on this, since the black matrix BM is formed on an uneven surface, the black matrix BM may also have the problem of surface unevenness.

[0063] When a portion of the ambient light from the outside shines into the black matrix BM within the display panel 10, some of the light rays that hit the surface of the black matrix BM are reflected by the black matrix BM before exiting the display panel 10.

[0064] When the black matrix BM has an uneven surface, the light emitted from the display panel 10 after being reflected by the black matrix BM when external ambient light shines on the black matrix BM will have uneven reflection.

[0065] Thus, uneven reflection of ambient light by the black matrix BM can lead to areas of inconsistent brightness in the display panel 10, which visually appear as alternating bright and dark patches or stripes. When an observer views the screen, these uneven reflections interfere with their normal perception of the displayed content, reducing the visual experience. Furthermore, uneven reflection can also cause some areas of the display panel 10 to be excessively bright or dim, thereby compromising the overall contrast of the screen. Reduced contrast makes images on the screen blurry, details difficult to discern, and negatively impacts the viewing experience.

[0066] Based on this, the present disclosure provides a display panel 10.

[0067] In some embodiments, as shown in FIG2, the display panel 10 includes a substrate 1 and a pixel defining layer 6 disposed on the substrate 1. The pixel defining layer 6 includes a plurality of fourth openings K4, and the light-emitting structure layer 2 includes a plurality of light-emitting units 21, with one light-emitting unit 21 located in one fourth opening K4. Each light-emitting unit 21 in the light-emitting structure layer 2 is used to emit light of a certain color, and the light emitted by the plurality of light-emitting units 21 in the light-emitting structure layer 2 may all be the same or not be exactly the same.

[0068] Each light-emitting unit 21 is placed in an independent area by multiple fourth openings K4 on the pixel defining layer 6. In this way, each light-emitting unit 21 can independently control its light-emitting state without being disturbed by adjacent light-emitting units 21.

[0069] For example, in the orthographic projection onto the substrate 1, the shape of the fourth opening K4 on the pixel defining layer 6 includes at least one of a circle, an ellipse, and a polygon. In the display panel 10, the shape of the fourth opening K4 may all be the same, or it may be multiple (two or more) of irregular shapes such as a circle, an ellipse, a polygon, or other shapes.

[0070] Accordingly, in the orthographic projection onto the substrate 1, the shape of the light-emitting unit 21 includes at least one of a circle, an ellipse, and a polygon. In the display panel 10, the shapes of the light-emitting units 21 may all be the same, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes.

[0071] In some embodiments, as shown in FIG2, the display panel 10 further includes an optical structure layer 3, which is disposed on the side of the light-emitting structure layer 2 away from the substrate 1. The optical structure layer 3 includes a plurality of first openings K1, and one first opening K1 and one light-emitting unit 21 are overlapped along the thickness direction of the display panel 10. The thickness direction of the display panel 10 refers to the direction perpendicular to the display surface of the display panel 10.

[0072] For example, the orthographic projection of the first opening K1 on the substrate 1 at least partially overlaps with the orthographic projection of the light-emitting unit 21 on the substrate 1. Similarly, the orthographic projections of the first opening K1 and the fourth opening K4 on the substrate 1 at least partially overlap.

[0073] Based on the above, as shown in Figure 2, the portion of the optical structure layer 3 located between two adjacent first openings K1 forms a lens 31. That is, the optical structure layer 3 includes multiple lenses 31 and first openings K1 located between adjacent lenses 31.

[0074] By setting lens 31, the light emitted by adjacent light-emitting units 21 can be focused and dispersed, thereby improving the luminous efficiency of the light-emitting units, controlling the direction of light propagation, and thus improving the brightness and viewing angle uniformity of the display panel 10. At the same time, setting lens 31 can also reduce light scattering and glare, thereby improving the contrast and clarity of the displayed image on the display panel 10.

[0075] In some embodiments, as shown in FIG2, the display panel 10 further includes a filter layer 4, which is disposed on the side of the light-emitting structure layer 2 away from the substrate 1. The filter layer 4 includes a plurality of filter units 41, which are located in the first opening K1, and the edges of two adjacent filter units 41 extend to the upper surface of the lens 31.

[0076] For example, the filter unit 41 may be a color filter (CF) or a color filter film.

[0077] For example, a filter unit 41 is provided corresponding to a light-emitting unit 21. The filter unit 41 can be a red filter, a blue filter, a green filter, etc. The light emitted by the light-emitting unit 21 is made to appear as a specific color by the filter unit 41, thereby realizing full-color display panel 10.

[0078] In the orthographic projection onto the substrate 1, the shape of the color filter 411 includes at least one of a circle, an ellipse, and a polygon.

[0079] In the display panel 10, the color filter portions 411 for different color filters can all have the same shape, or they can be multiple (two or more) of irregular shapes such as circles, ovals, polygons, or other shapes. The specific shape of the color filter portion 411 can be adaptively designed according to actual needs. This is an exemplary description of some possible implementations of this disclosure and is not intended to limit this disclosure.

[0080] In this way, the light emitted by the light-emitting unit 21 passes through the light-filtering unit 41 and then shines out. By setting the light-filtering unit 41, the contrast of the display screen 10 can be improved by optimizing the distribution of light and reducing light scattering, making the image clearer and more detailed.

[0081] For example, as shown in FIG2, at least a portion of the black matrix BM overlaps with a portion of the filter unit 41 extending to the upper surface of the lens 31.

[0082] In some embodiments, as shown in FIG2, the display panel 10 further includes a black matrix BM, which is disposed on the side of the filter layer 4 away from the substrate 1, and overlaps with the lens 31 along the thickness direction of the display panel 10.

[0083] The black matrix BM can be made of black resin or other light-shielding materials. The black matrix BM is used to separate the light emitted by the light-emitting units 21 of different colors to prevent color mixing. At the same time, the setting of the color filter 411 and the black matrix BM can also reduce the brightness of ambient light entering the display panel 10 to a certain extent. This reduces the interference caused by the light reflected from the reflective structure (such as the metal lines in the display panel 10) when it exits the display panel 10 on the image to be displayed on the display panel 10, which is beneficial to improving the contrast of the image displayed on the display panel 10.

[0084] In some possible implementations, the orthogonal projection of the black matrix BM onto the substrate 1 lies within the orthogonal projection of the lens 31 onto the substrate 1. In other possible implementations, the orthogonal projection of the black matrix BM onto the substrate 1 at least partially overlaps with the orthogonal projection of the lens 31 onto the substrate 1.

[0085] In some embodiments, as shown in FIG2, the black matrix BM defines a plurality of third openings K3, and a third opening K3 and a first opening K1 are arranged to overlap in the thickness direction of the display panel 10.

[0086] For example, the orthographic projection of the third opening K3 on the substrate 1 at least partially overlaps with the orthographic projection of the first opening K1 on the substrate 1. Alternatively, the orthographic projection of the first opening K1 on the substrate 1 may lie within the orthographic projection of the third opening K3 on the substrate 1.

[0087] For example, in the orthographic projection onto the substrate 1, the shape of the third opening K3 includes at least one of a circle, an ellipse, and a polygon. In the display panel 10, the multiple third openings K3 defined by the black matrix BM can all have the same shape, or they can be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes. The specific shape of the third opening K3 can be adaptively designed according to actual needs. This is an exemplary description of some possible embodiments of the present disclosure and is not intended to limit the present disclosure.

[0088] In some embodiments, as shown in FIG2, a third opening K3 and a light-emitting unit 21 are overlapped in the thickness direction of the display panel 10.

[0089] For example, the orthographic projection of the third opening K3 on the substrate 1 at least partially overlaps with the orthographic projection of the light-emitting unit 21 on the substrate 1. Alternatively, the orthographic projection of the first opening K1 on the substrate 1 lies within the orthographic projection of the light-emitting unit 21 on the substrate 1. Also, the orthographic projection of the light-emitting unit 21 on the substrate 1 lies within the orthographic projection of the first opening K1 on the substrate 1.

[0090] In some embodiments, as shown in FIG2, the lens 31 of the display panel 10 is provided with at least one second opening K2 facing away from the substrate 1. The second opening K2 overlaps with the black matrix BM along the thickness direction of the display panel 10.

[0091] For example, the orthographic projection of the second opening K2 on the substrate 1 lies within the range of the orthographic projection of the black matrix BM on the substrate 1. Also, the orthographic projection of the black matrix BM on the substrate 1 partially overlaps with the orthographic projection of the second opening K2 on the substrate 1.

[0092] For example, as shown in FIG3, the shape of the second opening K2 can be either an annular shape or a polygon.

[0093] In some embodiments, as shown in FIG2, the filter layer 4 includes a plurality of filter units 41, and the filter unit 41 includes a color filter portion 411 and a filling portion 412. At least a portion of the color filter portion 411 is located within the first opening K1, and the edge of the color filter portion 411 may extend to the upper surface of the lens 31.

[0094] Specifically, the black matrix BM may overlap with the portion of the color filter 411 that extends to the upper surface of the lens 31. This ensures that the light emitted by the light-emitting unit 21 passes through the color filter 411 before exiting the display panel 10, thus guaranteeing the display effect of the display panel 10.

[0095] Based on this, when forming the filter unit 41, the filter unit 41 can be formed as an integral structure, or the filter unit 41 can be broken at the second opening K2, and the color filtering part 411 and the filling part 412 of the filter unit 41 can be broken apart from each other.

[0096] Specifically, in some examples, as shown in Figures 2, 4, 8, 11, 13, 14, 15, 16, and 17, the display panel 10 has at least one filter unit 41 in which the color filter portion 411 and the filling portion 412 are connected. In this case, the filter unit 41 is a single structure, and the color filter portion 411 and the filling portion 412 are distinguished by the fact that the filter unit 41 is located in different areas.

[0097] For example, as shown in Figure 2, the filter unit 41 includes a portion located within the first opening K1, a portion located on the upper surface of the lens 31, and a portion located within the second opening K2, and these portions are connected sequentially as a single integral structure. The portion of the filter unit 41 located within the first opening K1 and the portion located on the upper surface of the lens 31 constitute the color filtering portion 411 of this filter unit 41, and the portion of the filter unit 41 located within the second opening K2 constitutes the filling portion 412 of this filter unit 41.

[0098] In other examples, as shown in Figures 6, 11, 13, 14 and 15, the display panel 10 has at least one color filter unit 41, in which the color filter portion 411 and the filling portion 412 are separated from each other.

[0099] Based on the above, the black matrix BM is located between adjacent light-emitting units 21 to separate the light emitted by different light-emitting units 21 and prevent crosstalk between the light emitted by adjacent light-emitting units 21. That is, the black matrix BM is used to block unwanted light and improve the contrast and color purity of the displayed image on the display panel 10.

[0100] The thickness of the black matrix BM affects its light-blocking effect. If the black matrix BM is too thin, its light-blocking effect may not meet expectations. If the black matrix BM is too thick, it may excessively block the light emitted by the adjacent light-emitting unit 21, causing color distortion or reduced brightness in the display panel 10. It may also reduce the viewing angle of the display panel 10, causing changes in color and brightness when viewed from different angles.

[0101] Furthermore, during the fabrication of the display panel 10, the black matrix BM can be formed through processes such as photolithography and coating. If the thickness of the black matrix BM is large, it may lead to problems such as uneven coating or decreased photolithography precision during the fabrication process, thereby affecting the yield of the black matrix BM. Therefore, the thickness of the black matrix BM needs to be controlled within a certain range.

[0102] In contrast, lens 31 is used to adjust the propagation direction of light emitted by light-emitting unit 21 and to focus or diffuse the light to improve the display clarity and brightness of display panel 10. Appropriately increasing the thickness of lens 31 can optimize its optical characteristics, such as focal length and magnification, thereby improving the display effect of display panel 10. Therefore, in display panel 10, the thickness of lens 31 can be greater than the thickness of black matrix BM.

[0103] The thickness of the filter unit 41 has a certain impact on its color performance and light transmittance. Appropriately increasing the thickness of the filter unit 41 can improve its color saturation and contrast, while ensuring sufficient light transmittance, making the image displayed on the display panel 10 clearer and brighter. Therefore, in the display panel 10, the thickness of the filter unit 41 can also be greater than the thickness of the black matrix BM.

[0104] Furthermore, the thickness of the color filter portion 411 of the filter unit 41 can be greater than the thickness of the lens 31.

[0105] Based on this, in some embodiments, as shown in FIG2, at least one filter unit 41 has a filling portion 412 located within the second opening K2 to form a support T, and the surface of the support T away from the substrate 1 is flat.

[0106] As shown in Figure 2, a flat surface on the side of the support T away from the substrate 1 means that the surface of the support T away from the substrate 1 (the surface in contact with the black matrix BM) is a flat surface. For example, any position on the surface of the support T away from the substrate 1 is at the same or approximately the same distance from the substrate 1.

[0107] As shown in Figure 2, along the thickness direction of the display panel 10, the size of the second opening K2 is larger than the size of the black matrix BM. That is, the depth of the second opening K2 is greater than the thickness of the black matrix BM.

[0108] Thus, the support T formed within the second opening K2 is thicker than the thickness of the black matrix BM, that is, compared to the thickness of the black matrix BM.

[0109] During the fabrication of the display panel 10, the filter material can be prepared at a predetermined position using processes such as dyeing, electrodeposition, printing, or pigment dispersion to form the corresponding filter unit 41. These processes can precisely control the thickness and color uniformity of the filter unit 41 during fabrication. Thus, when forming the filter unit 41, the portion of the filter material deposited within the second opening K2 can better fill the second opening K2 and achieve a relatively flat surface. Of course, the filter unit 41 can also be formed using other processes, and this disclosure is not limited to these.

[0110] For example, any position of the support T formed in the second opening K2 on the surface away from the substrate 1 is at the same or approximately the same distance from the substrate 1.

[0111] In this way, the black matrix BM formed on the support T can be formed on a flat surface, thereby ensuring the surface flatness of the prepared black matrix BM. When external ambient light shines on the black matrix BM, some light is absorbed by the black matrix BM, and the other part of the light is reflected by the black matrix BM and emitted from the display panel 10. Because the surface of the black matrix BM is relatively flat, the black matrix BM can uniformly reflect and emit external ambient light, avoiding the impact of uneven light reflection by the black matrix BM on the display effect and improving the display effect of the display panel 10.

[0112] Based on this, for example, as shown in FIG2, the size of the support body T is larger than the size of the black matrix BM along the thickness direction of the display panel 10. That is, the thickness of the support body T is greater than the thickness of the black matrix BM.

[0113] The same second opening K2 may contain a filling portion 412 with one filter unit 41 or multiple (two or more) filter units 41. At least one filling portion 412 located in the second opening K2 forms a support body T.

[0114] In some embodiments, as shown in FIG2, the first opening K1 has a first end K11 and a second end K12 opposite to each other along the thickness direction of the display panel 10, the first end K11 being closer to the substrate 1 than the second end K12; in the orthographic projection onto the substrate 1, the boundary of the first end K11 is within the range of the boundary of the second end K12.

[0115] In the fabrication process of the display panel 10, an entire optical material layer can be formed first, and then the portion of the optical material layer corresponding to the first opening K1 can be removed. Specifically, the portion of the optical material layer corresponding to the first opening K1 can be removed by etching process to obtain multiple lenses 31.

[0116] The first opening K1 formed by the etching process may have a structure that is larger at one end and smaller at the other, as shown in Figure 2. The size of the end of the first opening K1 away from the substrate 1 (the second end K12) is larger than the size of the end of the first opening K1 closer to the substrate 1 (the first end K11). Specifically, along the direction closer to the substrate 1, the size of the first opening K1 gradually decreases, or increases first and then decreases.

[0117] Thus, when a cross-section is taken of the lens 31 along a plane perpendicular to the display surface of the display panel 10, the boundary line used to form the first opening K1 in the resulting cross-sectional shape is either a diagonal line or an arc. For example, the cross-sectional shape of the lens 31 is, for example, a trapezoid, and the diagonal side connecting the upper and lower bases of the trapezoid can be a straight line or an arc.

[0118] Furthermore, as shown in Figure 2, the edge portion of the lens 31 forms a first opening K1. One end K11 and the second end K12 of the first opening K1 have different dimensions, that is, the thickness of the edge portion of the lens 31 varies in the direction away from the substrate 1.

[0119] The thickness of the edge portion of lens 31 gradually increases in the direction away from substrate 1. The edge portion of lens 31 refers to the part of lens 31 that encloses to form the first opening K1. In this way, the edge portion of lens 31 is sloped, and the portion of light emitted by light-emitting unit 21 that hits lens 31 will undergo total internal reflection at the edge portion of lens 31, converging the light towards the first opening K1. This allows more light emitted by light-emitting unit 21 to pass through the first opening K1 and exit the display panel 10, thereby improving the utilization rate of the light emitted by light-emitting unit 21 and increasing the display brightness of display panel 10.

[0120] For example, the maximum thickness of lens 31 is greater than or equal to 1.5 μm and less than or equal to 3 μm. The thickness of lens 31 refers to the dimension of lens 31 along the thickness direction of display panel 10.

[0121] The maximum thickness of lens 31 refers to the maximum dimension of lens 31 along the thickness direction of display panel 10. As shown in Figure 2, the cross-sectional shape of lens 31 is trapezoidal. It can be clearly seen that the thickness of lens 31 at the hypotenuse of the trapezoid is less than the thickness of lens 31 at the upper base of the trapezoid. The distance between the upper and lower bases of the trapezoid is the maximum thickness of lens 31.

[0122] In this way, by setting the thickness of the lens 31 within a set range, the utilization rate of the light emitted by the light-emitting unit 21 can be improved, while avoiding the display panel 10 being too thick, which is conducive to achieving a thinner and lighter design of the display panel 10.

[0123] In some embodiments, as shown in FIG2, the display panel 10 further includes a protective layer OC disposed on the side of the light filter layer 4 away from the substrate 1 and covering the light filter layer 4. In the case where the display panel 10 includes a black matrix BM, the protective layer OC is also located on the side of the black matrix BM away from the substrate 1 and covers the black matrix BM.

[0124] For example, the material of the protective layer OC includes organic materials. The material of the protective layer OC includes, but is not limited to, at least one of photoresist, acrylic, or resin.

[0125] By setting a protective layer OC, since the protective layer OC covers the light filter layer 4 and the black matrix BM, it can prevent the light filter layer 4 and the black matrix BM from being mechanically or chemically damaged, such as by impact or water and oxygen corrosion, thus ensuring the color filtering effect of the light filter layer 4 on the light emitted by the light-emitting unit 21, and preventing the black matrix BM from being damaged and causing unevenness on the surface, thus ensuring the light emission effect of the display panel 10.

[0126] If light is incident from a medium with a higher refractive index to a medium with a lower refractive index at an angle greater than the critical angle, the light will be completely reflected back to the original medium and will not enter the low-refractive-index medium, thereby reducing the light extraction efficiency of the display panel 10. Based on this, in some embodiments, the refractive index of the material of the protective layer OC is different from that of the material of the lens 31. For example, the refractive index of the material of the protective layer OC is less than that of the material of the lens 31.

[0127] In this way, the light emitted by the light-emitting unit 21 can improve total internal reflection and reduce light loss as it passes through the lens 31 and the protective layer OC, thereby improving the light extraction effect of the display panel 10.

[0128] In some embodiments, the refractive index of the material of the optical structure layer 3 is different from that of the material of the filter layer 4. For example, the refractive index of the material of the optical structure layer 3 is less than that of the material of the filter unit 41.

[0129] By using materials with different refractive indices for the optical structure layer 3 and the filter layer 4, the light emitted by the light-emitting unit 21 passes through the optical structure layer 3 and the filter layer 4. The change in the high and low refractive indices of the optical structure layer 3 and the filter layer 4 reduces the total internal reflection loss of the light at the film interface (e.g., the surface where the optical structure layer 3 and the filter layer 4 are in contact), allowing more light to exit the display panel 10 and be received by the observer, thereby improving the light extraction efficiency of the display panel 10.

[0130] For example, the refractive index of the material of the protective layer OC is different from that of the material of the filter unit 41. For instance, the refractive index of the material of the protective layer OC may be less than that of the material of the filter unit 41.

[0131] In this way, when the light emitted by the light-emitting unit 21 passes through the light-filtering unit 41 and the protective layer OC, the different refractive indices of the materials of the light-filtering unit 41 and the lens 31 can improve the total internal reflection of the light, reduce light loss, and improve the utilization rate of the light emitted by the light-emitting unit 21.

[0132] Based on the above, in some embodiments of this disclosure, the refractive index of the material of the protective layer OC is, for example, in the range of 1.52 to 1.56 (including the end extremes). The refractive index of the material of the filter unit 41 is, for example, in the range of 1.60 to 1.75 (including the end extremes). The refractive index of the material of the lens 31 is in the range of 1.45 to 1.56 (including the end extremes).

[0133] The refractive indices of the materials of the protective layer OC, the filter unit 41, and the lens 31 are not limited to the ranges described above, and may also be other numerical ranges. This is merely an illustrative description of some possible embodiments of this disclosure. The magnitude and specific refractive indices of the materials of the protective layer OC, the filter unit 41, and the lens 31 can be selected and matched as needed. This disclosure does not limit this, as long as the target effect can be achieved.

[0134] Based on the above, the lens 31 may have one second opening K2, or it may have multiple second openings K2 (two or more). The following description uses a lens 31 with one second opening K2 as an example to illustrate some embodiments of this disclosure.

[0135] In some embodiments, as shown in FIG2, the lens 31 is provided with a second opening K2, and the filling portions 412 of two adjacent filter units 41 are located in the same second opening K2.

[0136] For example, as shown in FIG2, the width a1 of the second opening K2 is greater than or equal to 5 μm. The width a1 of the second opening K2 refers to the dimension of the second opening K2 along the direction of the line connecting the geometric centers of the two adjacent first openings K1. The width a1 of the second opening K2 is not limited thereto, and this disclosure does not limit it.

[0137] As shown in Figure 2, the second opening K2 can be a through lens 31; or, as shown in Figure 4, the second opening K2 can also be a groove that does not penetrate the lens 31, that is, the second opening K2 is a groove provided on the lens 31.

[0138] Figure 3 is a plan view of the display panel 10 according to some embodiments of the present disclosure. Specifically, it can be a plan view of the display panel 10 shown in Figure 2. To clearly show the specific structure of the lens 31, only part of the structure of the lens 31, the second opening K2 on the lens 31, and the filter unit 41 in the display panel 10 are shown in Figure 3. The number of lenses 31 and filter units 41 in the display panel 10 is not limited to those shown in Figure 3. In addition to the structure shown in Figure 3, the display panel 10 also includes other structures not shown.

[0139] Figure 3 only shows the position of the third opening K3 on the black matrix BM, but the film structure of the black matrix BM is not shown. In the display panel 10, the black matrix BM can be a whole film structure, and this whole film structure has a third opening K3 that corresponds to the light-emitting unit 21.

[0140] For example, the portions of the multiple third openings K3 marked in Figure 3 are hollowed-out parts, and the light emitted by the light-emitting unit 21 can pass through the third openings K3 and be emitted out. The portions between the third openings K3 marked in Figure 3 are all covered by the black matrix BM to separate the light emitted by different light-emitting units 21, so as to prevent the light emitted by the light-emitting unit 21 from being emitted from the light-emitting area of ​​another light-emitting unit 21 adjacent to it, which would cause color mixing and affect the display effect.

[0141] Meanwhile, the arrangement of the multiple light-emitting units 21 in the display panel 10 is not limited to that shown in Figure 3. The multiple light-emitting units 21 can be arranged in any way, such as Real RGB, GGRB, Magic, or diamond arrangement, in the display panel 10.

[0142] Referring to Figures 2 and 3, during the fabrication of the display panel 10, an optical material layer covering the entire surface can be formed first. In the orthogonal projection onto the substrate 1, multiple light-emitting units 21 are all located within the area of ​​the optical material layer. Multiple lenses 31 are obtained by forming multiple first openings K1 on the optical material layer; then, second openings K2 are formed on the lenses 31 to obtain the lenses 31 in some embodiments of this disclosure.

[0143] When the second opening K2 penetrates the lens 31, the portion between two adjacent first openings K1 (e.g., the second opening K2 shown in FIG3) of the lens 31 can be removed. In this way, in the display panel 10, some lenses 31 that are arranged corresponding to different light-emitting units 21 may still be connected to each other.

[0144] Alternatively, as shown in Figure 3, when forming the second opening K2, all parts except the annular lens 31 shown in Figure 3 can be removed. In this way, the multiple lenses 31 in the display panel 10, which are arranged corresponding to different light-emitting units 21, are independent of each other and separated from each other.

[0145] Referring to Figures 2 and 3, a lens 31 has a second opening K2. Along the direction of the line connecting the centers of two adjacent lenses 31, the size a1 of the second opening K2 is greater than or equal to 5 μm. The size of the second opening K2 mentioned here refers to the size of the portion of the second opening K2 located between two adjacent lenses 31.

[0146] Referring again to Figures 2 and 3, along the direction of the line connecting the centers of two adjacent lenses 31, the distance a2 between the first opening K1 and the second opening K2 is greater than or equal to 5 μm.

[0147] Along the direction of the line connecting the centers of two adjacent lenses 31, the distance between two adjacent first openings K1 is H = a1 + 2 × a2 ≥ 15 μm.

[0148] Figure 5 is a plan view of a display panel 10 according to some embodiments of the present disclosure. Specifically, it can be a plan view of the display panel 10 shown in Figure 4. Unlike the display panels 10 shown in Figures 2 and 3, in the display panels 10 shown in Figures 4 and 5, the second opening K2 on the lens 31 does not penetrate the lens 31.

[0149] Referring to Figures 4 and 5, during the fabrication of the display panel 10, an optical material layer covering the entire surface can be formed first. In the orthogonal projection onto the substrate 1, multiple light-emitting units 21 are all located within the area of ​​the optical material layer. Multiple lenses 31 are obtained by forming multiple first openings K1 on the optical material layer; then, second openings K2 are formed on the lenses 31 to obtain the lenses 31 in some embodiments of this disclosure.

[0150] If the second opening K2 does not penetrate the lens 31, the portion between two adjacent first openings K1 of the lens 31 (e.g., the second opening K2 shown in FIG. 5) can be thinned. In this way, the lenses 31 in the display panel 10, which are arranged corresponding to different light-emitting units 21, can be connected to each other through the thinned portion.

[0151] For example, the annular lens 31 shown in FIG. 5 corresponds to the thicker portion of the lens 31 shown in FIG. 4. For instance, the lens 31 shown in FIG. 4 is trapezoidal (the cross-sectional shape of the lens 31), with a groove cut at the top of the trapezoid to form the second opening K2. In this case, the optical structure layer 3 can be a continuous film structure, and the lens 31 can include the thicker annular portion corresponding to the light-emitting unit 21 shown in FIG. 5, as well as thinner portions connecting multiple annular portions. The thicker portion is the unthinned portion of the lens 31, and the thinner portion corresponds to the portion of the lens 31 that has been thinned to form the second opening K2.

[0152] Based on the above, as shown in Figures 3 and 5, a second opening K2 is provided on a lens 31. Along the direction of the line connecting the centers of two adjacent lenses 31, the size a1 of the second opening K2 is greater than or equal to 5μm.

[0153] The size of the second opening K2 mentioned here is the size of the portion of the second opening K2 located between two adjacent lenses 31.

[0154] Referring again to Figures 3 and 5, along the direction of the line connecting the centers of two adjacent lenses 31, the distance a2 between the first opening K1 and the second opening K2 is greater than or equal to 5 μm.

[0155] Along the direction of the line connecting the centers of two adjacent lenses 31, the distance between two adjacent first openings K1 is H = a1 + 2 × a2 ≥ 15 μm.

[0156] Based on this, during the fabrication of the display panel 10, filter units 41 of different filter colors are formed in different process steps. Filter units 41 of the same filter color can be formed directly at a preset position using processes such as vapor deposition; alternatively, a full layer of filter material can be formed first, and then excess filter material can be removed using an etching process to form the filter unit 41 at the preset position. The vapor deposition process described herein is an illustrative example of some possible embodiments of this disclosure and is not intended to limit the scope of this disclosure. The filter unit 41 can also be formed using other processes.

[0157] Thus, in adjacent filter units 41, if the filling portions 412 of the two filter units 41 are both located within the same second opening K2, then the filling portion 412 of the filter unit 41 formed first is relatively lower (located on the side of the filling portion 412 of the filter unit 41 formed later that is closer to the substrate 1), and the filling portion 412 of the filter unit 41 formed later is relatively higher (located on the side of the filling portion 412 of the filter unit 41 formed first that is further away from the substrate 1).

[0158] The steps for forming the filter unit 41 are as follows: first, a full-layer filter material is formed, and then excess filter material is removed through an etching process. Taking the formation of the filter unit 41 at a predetermined location as an example, the type and thickness of the photoresist in the etching process affect the final thickness of the filter unit 41. Different types of photoresists have different viscosities and curing properties. Therefore, during the coating process, photoresist of different thicknesses can be coated on the surfaces of the filter unit 41 located within the first opening K1, the portion located within the second opening K2, and the portion located on the lens 31. Multiple exposure and development processes are then performed to achieve different thicknesses in different parts of the final formed filter unit 41.

[0159] Alternatively, for a filter section with the same color, multiple layers of filter material can be formed in stages, and the multiple layers of filter material can be cured to form a filter unit 41 with the same color. For example, a first layer of filter material is first formed in the first opening K1; then, a second layer of filter material is formed in the first opening K1 and the second opening K2; and then, a third layer of filter material is formed on the first opening K1, the second opening K2 and the upper surface of the lens 31.

[0160] Thus, the filter unit 41 is composed of multiple layers of filter material formed separately, with some overlapping and no overlap between the multiple filter layers, thereby giving the filter unit 41 different thicknesses.

[0161] In some embodiments, as shown in FIG2, the filling portions 412 of two adjacent filter units 41 are adjacent and do not overlap. The upper surfaces of two adjacent filter units 41 are flush or substantially flush.

[0162] The filling portions 412 of different filter units 41 filled in the same second opening K2 are adjacent and do not overlap. In this way, the filling portions 412 of different filter units 41 filled in the same second opening K2 are a whole structure (support body T). The surface of the support body T away from the substrate 1 is flat, and the surface of the black matrix BM formed on the support body T is flat, so that the black matrix BM can uniformly reflect the light emitted by the light-emitting unit 21, avoid color separation phenomenon in the display panel 10, and improve the display effect of the display panel 10.

[0163] Specifically, as shown in FIG2, the two filling portions 412 located in the same second opening K2 may have opposite side surfaces in contact, and the filling portions 412 located in the same second opening K2 are flush or substantially flush with the surface away from the substrate 1.

[0164] For example, there is no gap between two adjacent filling portions 412 and they are the same height. The upper surfaces of two adjacent filling portions 412 are flush and connected to form a flat surface, without overlapping each other; or, they partially overlap, but the overlapping part is small, and the upper surfaces of the two adjacent filling portions 412 are roughly flush.

[0165] In this case, in some examples, as shown in Figure 2, the second opening K2 can be a through lens 31.

[0166] For example, the sum of the thickness of the portion of the filter unit 41 located on the upper surface of the lens 31 and the maximum thickness of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the first opening K1.

[0167] For example, the thickness of the portion of the filter unit 41 located within the first opening K1 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the second opening K2.

[0168] The upper surfaces of two adjacent filter units 41 are flush or nearly flush. Thus, the upper surface of each filter unit 41 as a whole is a flat surface, and the upper side of the support T formed in the second opening K2 is also a flat surface.

[0169] Furthermore, with the second opening K2 penetrating the lens 31, more filter material can be filled in the second opening K2, making the filter material filled in the second opening K2 easier to self-level, and making the support T easier to have a flat upper surface.

[0170] In some other examples, as shown in Figure 4, the second opening K2 may not penetrate the lens 31. In this case, the second opening K2 is a groove provided on the lens 31.

[0171] For example, the sum of the thickness of the portion of the filter unit 41 located on the upper surface of the lens 31 and the maximum thickness of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the first opening K1.

[0172] For example, the sum of the thickness of the portion of the filter unit 41 located in the second opening K2 and the distance between the bottom of the second opening K2 and the bottom of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located in the first opening K1.

[0173] Specifically, a portion of the material of lens 31 can be removed to obtain a groove for forming the support T. A certain amount of lens 31 material remains between the bottom of the groove and the bottom of lens 31. For example, the distance between the bottom of the second opening K2 and the bottom of lens 31 is greater than or equal to 0.5 μm. Alternatively, the distance between the bottom of the second opening K2 and the bottom of lens 31 is less than or equal to 1.5 μm.

[0174] Thus, since a certain amount of lens 31 material is retained at the bottom of the second opening K2, there is a refractive index difference between the portion of lens 31 located at the bottom of the second opening K2 and the support T. Along the thickness direction of the display panel 10, there is a refractive index difference between the lens 31 retained at the bottom of the second opening K2 and the support T within the second opening K2; along the direction parallel to the display surface of the display panel 10, there is also a refractive index difference between the support T and the lens 31 surrounding the support T.

[0175] In this way, as the light emitted by the light-emitting unit 21 passes through the lens 31 and the filter unit 41, the light can be reflected more between the structures with different refractive indices, thereby improving the light extraction efficiency of the display panel 10.

[0176] In some embodiments, as shown in FIG2, in a positive projection onto the substrate 1, the boundaries of the first opening K1 on the optical structure layer 3 and the fourth opening K4 on the pixel defining layer 6 are spaced apart, or the first opening K1 and the fourth opening K4 overlap.

[0177] As shown in Figures 2 and 3, in the orthographic projection onto the substrate 1, the fourth opening K4 may be located within the range of the first opening K1; or, in the orthographic projection onto the substrate 1, the fourth opening K4 may overlap with the first opening K1; or, in the orthographic projection onto the substrate 1, the first opening K1 may be located within the range of the fourth opening K4.

[0178] When the boundaries of the first opening K1 and the fourth opening K4 projected onto the substrate 1 are spaced apart, as shown in FIG2, the fourth opening K4 may be located within the range of the first opening K1 in the projected onto the substrate 1, and the boundary between the fourth opening K4 and the first opening K1 may have a first distance d1. For example, d1 is less than or equal to 0.5 μm.

[0179] Alternatively, in the orthographic projection onto substrate 1, the first opening K1 may be located within the range of the fourth opening K4, with a second interval d2 between the boundary of the fourth opening K4 and the first opening K1. For example, d2 may be less than or equal to 0.5 μm. Or, d2 may be less than or equal to 1.5 μm.

[0180] Lens 31 is made of light-transmitting material. Therefore, even if lens 31 and light-emitting unit 21 partially overlap along the thickness direction of display panel 10, it will not affect the light emission display of display panel 10. The size and relative size of the second opening K1 and the fourth opening K4 can be adapted to actual needs.

[0181] The lens may be made of an organic material, for example, the same material as the protective layer OC.

[0182] In other embodiments, as shown in Figures 6 and 7, the filling portions 412 of two adjacent filter units 41 are overlapped along the thickness direction of the display panel 10.

[0183] The orthographic projections of the two filling portions 412 located within the same second opening K2 onto the substrate 1 at least partially overlap.

[0184] In some examples, the orthogonal projections of the two filling portions 412 located within the same second opening K2 onto the substrate 1 both cover the second opening K2.

[0185] In other examples, of the two filling portions 412 located within the same second opening K2, the filling portion 412 located below (closer to the substrate 1 side) may cover the bottom of the second opening K2 and be in contact with the sidewall of the second opening K2, while the filling portion 412 located above (farther from the substrate 1 side) completely covers the filling portion 412 below and is in contact with the sidewall of the second opening K2.

[0186] In some other examples, of the two filling portions 412 located within the same second opening K2, the filling portion 412 located below (closer to the substrate 1 side) may cover a portion of the bottom of the second opening K2 and be in contact with the sidewall of the second opening K2; the filling portion 412 located above (farther from the substrate 1 side) completely covers the filling portion 412 below and covers another portion of the bottom exposed of the second opening K2 and is in contact with the sidewall of the second opening K2.

[0187] In this case, as shown in Figure 6, the second opening K2 can be a through lens 31.

[0188] Alternatively, the second opening K2 may not penetrate the lens 31, meaning the second opening K2 is a groove provided on the lens 31. Along the thickness direction perpendicular to the display panel 10, the distance between the bottom of the second opening K2 and the bottom of the lens 31 is greater than or equal to 0.5 μm and less than or equal to 1.5 μm.

[0189] For details on whether the second opening K2 penetrates or does not penetrate the lens 31, please refer to the previous text. We will not elaborate further here.

[0190] For example, different filter units 41 filling the same second opening K2 may have different filter colors. For instance, one may be a red filter unit and the other a blue filter unit; or one may be a red filter unit and the other a green filter unit; or one may be a blue filter unit and the other a green filter unit. Of course, other color combinations are also possible, and this disclosure is not limited thereto.

[0191] In some examples, as shown in Figures 6 and 7, during the fabrication of the display panel 10, a filter unit 41 for one color of light filtering may be formed within a corresponding first opening K1, and also within a plurality of second openings K2 (e.g., an adjacent second opening K2, and at least one non-adjacent second opening K2). The filter units 41 for other colors of light filtering may also be configured in this manner, or may be formed only within the corresponding first opening K1 (or within the adjacent second opening K2).

[0192] In other examples, during the fabrication of the display panel 10, at least a portion of the filter unit 41 is formed within the corresponding first opening K1 and the adjacent second opening K2.

[0193] Thus, regardless of which of the above-mentioned preparation methods is used, the final display panel 10 will have at least two stacked filling portions 412 within the second opening K2. The stacked filling portions 412 located within the same second opening K2 belong to different filter units 41 with different filter colors. The filling portions 412 of different filter units 41 also have the same color filtering effect as the color filter portions 411. A filling portion 412 with a filter color allows light with wavelengths within a certain range to pass through. Therefore, the overlapping portion of the filling portions 412 of different filter units 41 filling the same second opening K2 can form a light blocking effect.

[0194] In this case, the black matrix BM can be omitted from the display panel 10. The overlapping filter units 41 of different filter colors within the second opening K2 can serve as the black matrix BM, which can reduce the manufacturing cost of the display panel 10. Of course, in this case, the black matrix BM can also be provided in the display panel 10. This would provide a better blocking effect on the light emitted by different light-emitting units 21, better prevent color mixing between adjacent light-emitting units 21, and improve the display effect of the display panel 10.

[0195] The following describes some embodiments of the present disclosure with lens 31 having two second openings K2.

[0196] In some embodiments, as shown in Figures 8 and 9, the lens 31 is provided with two second openings K2, which are arranged at intervals along the line connecting the centers of two adjacent first openings K1; the filling portion 412 of two adjacent filter units 41 is located within the two second openings K2.

[0197] For example, the center of the first opening K1 can refer to the geometric center of the shape of the first opening K1, or the centroid of the shape of the first opening K1. Specifically, the design can be matched according to the shape of the first opening K1. For example, if the shape of the first opening K1 is a regular shape, then the center of the first opening K1 refers to the geometric center of this regular shape, or it can refer to the centroid of this regular shape; if the shape of the first opening K1 is an irregular shape, then the center of the first opening K1 can refer to the centroid of this irregular shape.

[0198] Regular shapes are figures that have a definite shape, symmetry, and specific rules (such as specific rules for side lengths, angles, or diagonals), such as triangles, round rectangles, parallelograms, or regular polygons.

[0199] Irregular shapes refer to figures that do not conform to the definition of regular figures, lack a fixed shape or symmetry, and are difficult to describe using conventional names. These images can be composed of various different curves or straight lines, with no clear pattern between their side lengths, angles, or diagonals.

[0200] Specifically, the orthographic projection of the first opening K1 onto the substrate 1 is a circle, and the center of the first opening K1 is the center of the circle. If the orthographic projection of the first opening K1 onto the substrate 1 is a quadrilateral, the center of the first opening K1 can be the intersection of the diagonals of the quadrilateral or the centroid of the quadrilateral.

[0201] For example, as shown in Figures 8 and 9, the width h2 of the second opening K2 is greater than or equal to 5 μm. The width a2 of the second opening K2 refers to the dimension of the second opening K2 along the direction of the line connecting the geometric centers of the two adjacent first openings K1. In this case, the width a2 of the second opening K2 is not limited to this, and this disclosure does not limit it.

[0202] Referring to Figures 8 and 9, a lens 31 has two second openings K2. Along the direction of the line connecting the centers of two adjacent lenses 31, the width a2 of the second opening K2 is greater than or equal to 5 μm. The distance a1 between the two second openings K2 is greater than or equal to 5 μm.

[0203] Based on this, in some embodiments, as shown in Figures 8 and 10, the filling portion 412 of two adjacent filter units 41 is located in two second openings K2 respectively.

[0204] In this case, in some examples, as shown in Figure 8, the second opening K2 can be a through lens 31.

[0205] For example, the sum of the thickness of the portion of the filter unit 41 located on the upper surface of the lens 31 and the maximum thickness of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the first opening K1.

[0206] For example, the thickness of the portion of the filter unit 41 located within the first opening K1 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the second opening K2.

[0207] The upper surfaces of two adjacent filter units 41 are flush or nearly flush. Thus, the upper surface of each filter unit 41 as a whole is a flat surface, and the upper side of the support T formed in the second opening K2 is also a flat surface.

[0208] Furthermore, with the second opening K2 penetrating the lens 31, more filter material can be filled in the second opening K2, making the filter material filled in the second opening K2 easier to self-level, and making the support T easier to have a flat upper surface.

[0209] In other examples, as shown in Figure 10, the second opening K2 may also be without penetrating lens 31.

[0210] For example, the sum of the thickness of the portion of the filter unit 41 located on the upper surface of the lens 31 and the maximum thickness of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located within the first opening K1.

[0211] For example, the sum of the thickness of the portion of the filter unit 41 located in the second opening K2 and the distance between the bottom of the second opening K2 and the bottom of the lens 31 is the same as or approximately the same as the thickness of the portion of the filter unit 41 located in the first opening K1.

[0212] Specifically, a portion of the material of lens 31 can be removed to obtain a groove for forming the support T. A certain amount of lens 31 material remains between the bottom of the groove and the bottom of lens 31. For example, the distance between the bottom of the second opening K2 and the bottom of lens 31 is greater than or equal to 0.5 μm. Alternatively, the distance between the bottom of the second opening K2 and the bottom of lens 31 is less than or equal to 1.5 μm.

[0213] Thus, since a certain amount of lens 31 material is retained at the bottom of the second opening K2, there is a refractive index difference between the portion of lens 31 located at the bottom of the second opening K2 and the support T. Along the thickness direction of the display panel 10, there is a refractive index difference between the lens 31 retained at the bottom of the second opening K2 and the support T within the second opening K2; along the direction parallel to the display surface of the display panel 10, there is also a refractive index difference between the support T and the lens 31 surrounding the support T.

[0214] In this way, as the light emitted by the light-emitting unit 21 passes through the lens 31 and the filter unit 41, the light can be reflected more between the structures with different refractive indices, thereby improving the light extraction efficiency of the display panel 10.

[0215] In some embodiments, as shown in Figures 8 and 10, the lens 31 includes a spacer 311 located between two second openings K2, the edge of at least one of the filling portions 412 of two adjacent filter units 41 extending to the upper surface of the spacer 311, and the filling portions 412 of two adjacent filter units 41 connected on the upper surface of the spacer 311.

[0216] For example, in the manufacturing process of the display panel 10, the lens 31 may be formed first, and then the second opening K2 may be formed on the lens 31. The spacer 311 is formed by the portion between the two second openings K2 formed on the lens 31. Therefore, the thickness of the spacer 311 is the same as the thickness of the lens 31.

[0217] Specifically, as shown in Figures 8 and 10, two adjacent filling portions 412 may have opposite side surfaces in contact, and the surfaces away from the substrate 1 may be flush or substantially flush.

[0218] For example, there is no gap between two adjacent filling portions 412 and they are the same height. The upper surfaces of two adjacent filling portions 412 are flush and connected to form a flat surface, without overlapping each other; or, they partially overlap, but the overlapping part is small, and the upper surfaces of the two adjacent filling portions 412 are roughly flush.

[0219] The surfaces of two adjacent filter units 41 that are far from the substrate 1 are flat. When the black matrix BM is subsequently fabricated, the black matrix BM can be formed on the flat surface, so that the surface of the black matrix BM subsequently formed on the filter layer 4 is flat. In this way, the black matrix BM can uniformly reflect the light from the external ambient light that enters the display panel 10, avoid color separation in the display panel 10, and improve the display effect of the display panel 10.

[0220] The flatness of the surfaces of two adjacent filter units 41 away from the substrate 1 means that the surface of the two adjacent filter units 41 away from the substrate 1 (the surface in contact with the black matrix BM) is a flat surface.

[0221] For example, as shown in Figure 2, the filling portions 412 of two adjacent filter units 41 are located in the same second opening K2 and do not overlap. In this case, any position on the side surface of the two adjacent filter units 41 away from the substrate 1 is the same or approximately the same distance from the substrate 1.

[0222] For example, as shown in Figure 8, the filling portions 412 of two adjacent filter units 41 are located in the same second opening K2 and overlap. In this case, one of the filling portions 412 may be located at the bottom of the other filling portion 412. That is, the two filling portions 412 located in the same second opening K2 are stacked in sequence, and the filling portion 412 located on the upper side (away from the substrate 1) completely blocks the filling portion 412 located on the lower side (closer to the substrate 1).

[0223] In some embodiments, as shown in Figures 11 to 14, the filling portions 412 of two adjacent filter units 41 are respectively a first filling portion 412a and a second filling portion 412b. A portion of the first filling portion 412a is located in one of the two second openings K2, and the other portion of the first filling portion 412a is located in the other of the two second openings K2. The second filling portion 412b is located in the other second opening K2.

[0224] For example, the sum of the thicknesses of the first filling portion 412a and the second filling portion 412b within the second opening K2 is the same as or approximately the same as the thickness of the first filling portion 412a within the other adjacent second opening K2.

[0225] Specifically, the two filling portions 412 located within the same second opening K2 can be stacked along the thickness direction of the display panel 10, and the upper surfaces of the two filling portions 412 are flush, forming a flat surface.

[0226] As shown in Figure 11, the first filling portion 412a and the second filling portion 412b within two adjacent second openings K2 are connected on the upper surface of the lens 31, with no gap between them and the same height. The upper surfaces of the connected first filling portion 412a and the second filling portion 412b are flush and connected to form a flat surface, without overlapping each other; or, they partially overlap, but the overlapping part is small, and the upper surfaces of the connected first filling portion 412a and the second filling portion 412b are approximately flush.

[0227] For example, the first filling portion 412a and the second filling portion 412b belong to filter units 41 with different filter colors. In this way, the overlapping portion of the first filling portion 412a and the second filling portion 412b filled in the same second opening K2 can form a light-blocking effect. In this case, the display panel 10 does not need to be provided with a black matrix BM, and the overlapping portion of the first filling portion 412a and the second filling portion 412b in the second opening K2 can serve as the black matrix BM, which can reduce the manufacturing cost of the display panel 10.

[0228] Of course, in this case, a black matrix BM can also be set in the display panel 10. This will have a better blocking effect on the light emitted by different light-emitting units 21, and will better prevent color mixing between adjacent light-emitting units 21, thereby improving the display effect of the display panel 10.

[0229] Based on any of the foregoing embodiments, one or more second openings K2 provided on the lens 31 may penetrate the lens 31 or may not penetrate the lens 31. Furthermore, when multiple second openings K2 are provided on a lens 31, the multiple second openings K2 on the same lens 31 may all penetrate the lens 31, or may all not penetrate the lens 31, or may partially penetrate the lens 31 and partially not penetrate the lens 31.

[0230] The specific design can be adapted according to actual needs, and this disclosure does not limit it.

[0231] In some embodiments, as shown in Figures 11 to 14, the display panel 10 further includes at least one touch structure layer 5 disposed between the substrate 1 and the filter layer 4.

[0232] The display panel 10 may be a multi-layer (two or more layers) touch structure layer 5, such as the first touch structure layer 51 and the second touch structure layer 52 shown in FIG4. The display panel 10 also includes a touch insulating layer 9 disposed between the first touch structure layer 51 and the second touch structure layer 52.

[0233] The touch insulating layer 9 is used to separate the first touch structure layer 51 and the second touch structure layer 52. The parts of the first touch structure layer 51 and the second touch structure layer 52 that need to be connected can be electrically connected through vias penetrating the touch insulating layer 9. The material of the touch insulating layer 9 includes at least one of silicon nitride (SiN) and organic compound (OC).

[0234] The display panel 10 may also include a touch structure layer 5. The specific design can be adapted according to actual needs, and this disclosure does not limit it.

[0235] The touch structure layer 5 includes touch electrodes and touch leads. The touch electrodes can be sheet electrodes or mesh electrodes.

[0236] The metal wires described below can be touch leads or part of a mesh touch electrode. Furthermore, the touch electrodes and touch leads can be located within the first touch structure layer 51 and / or within the second touch structure layer 52.

[0237] In some embodiments, the surface of the second touch structure layer 52 near the substrate 1 is flush with the surface of the lens 31 near the substrate 1, and the second opening K2 penetrates the lens 31.

[0238] Specifically, the second touch structure layer 52 and the lens 31 can be disposed on the same film structure, so that the surface of the second touch structure layer 52 near the substrate 1 and the surface of the lens 31 near the substrate 1 are both located on the same film structure.

[0239] Based on this, in some examples, as shown in Figures 2 and 6, the metal wire is located within the area of ​​the second opening K2 in the orthographic projection onto the substrate 1. The support T is in contact with and covers the metal wire.

[0240] The second opening K2 on the lens 31 penetrates the lens 31. When the filter unit 41 is fabricated, the filling part 412 of the filter unit 41 is disposed in the second opening K2 to cover the metal wires in the second touch structure layer 52, so as to protect the metal wires in the second touch structure layer 52.

[0241] In other embodiments, the surface of the second touch structure layer 52 near the substrate 1 is flush with the surface of the lens 31 near the substrate 1, and the depth of the second opening K2 is less than the maximum thickness of the lens 31.

[0242] Therefore, in some examples, as shown in Figures 4 and 8, 9, 10, 11, and 12, the metal wire is located within the area of ​​the lens 31 in the orthogonal projection onto the substrate 1. The lens 31 is in contact with and covers the metal wire.

[0243] The second opening K2 on lens 31 does not penetrate lens 31. The thickness of lens 31 at the bottom of the second opening K2 is greater than the thickness of the metal wire in the second touch structure layer 52. In this way, the metal wire in the second touch structure layer 52 can be covered by lens 31, thereby protecting the metal wire in the second touch structure layer 52.

[0244] In some embodiments, in an orthographic projection onto the substrate 1, the metal wire is located between the mutually distant boundaries of the two second openings K2. The spacer 311 of the lens 31 located between the two second openings K2 contacts the metal wire and covers at least a portion of the metal wire.

[0245] Based on this, in some examples, as shown in Figures 8, 10, 11, and 12, in the orthographic projection onto the substrate 1, the metal wires within the second touch structure layer 52 are located within the spacer portion 311. In this case, regardless of whether the second opening K2 penetrates the lens 31 or not, the portion of the metal wires within the second touch structure layer 52 located between the two second openings K2 on the lens 31 can be covered by the spacer portion 311, thereby protecting the metal wires within the second touch structure layer 52.

[0246] In other examples, as shown in Figure 14, the support body T includes a first sub-support body T1 and a second sub-support body T2 located in two second openings K2 respectively. When the second opening K2 passes through the lens 31, at least one of the first sub-support body T1 and the second sub-support body T2 is in contact with the metal wire and covers part of the metal wire.

[0247] A portion of the metal wires within the second touch structure layer 52 is covered by the spacer 311, and another portion is covered by the support T (e.g., the second support T2 shown in FIG15) within the second opening K2, thereby protecting the metal wires within the second touch structure layer 52.

[0248] In some other embodiments, as shown in FIG16, in the orthographic projection onto the substrate 1, the metal wires within the second touch structure layer 52 are located within a second opening K2. The second opening K2 penetrates the lens 31, and the metal wires within the second touch structure layer 52 are covered by a support T (e.g., the second support T2 shown in FIG16) within the second opening K2, thereby protecting the metal wires within the second touch structure layer 52.

[0249] In some embodiments, as shown in Figures 12 and 13, the edge of the color filter portion 411 of at least one filter unit 41 extends to the surface of the lens 31 on the side away from the substrate 1 and is connected to the filling portion 412 of the filter unit 41. In this way, the color filter portion 411 and the filling portion 412 of the filter unit 41 are connected to form an integral structure, ensuring that the surface of the filter unit 41 is a relatively flat surface.

[0250] When the filling portion 412 of the filter unit 41 is located within a second opening K2, the color filtering portion 411 and the filling portion 412 of the filter unit 41 can be connected on the surface of the lens 31 away from the substrate 1.

[0251] In some other embodiments, during the formation of the filter unit 41, if the filter material covers the first opening K1 and the two second openings K2 adjacent to the first opening K2, the filling portion 412 of the finally formed filter unit 41 may be broken on one side of the spacer 311, so that the filling portion 412 of the finally formed filter unit 41 is disposed in the two adjacent second openings K2. In this type of filter unit 41, a part of the filling portion 412 is connected to the color filtering portion 411 of the filter unit 41, and the other part of the filling portion 412 is an independent structure and is broken from the rest.

[0252] In summary, in the embodiments disclosed herein, the black matrix BM is disposed on the side of the support T away from the substrate 1 and is in contact with the support T. The surface of the support T away from the substrate 1 is flat; therefore, the black matrix BM formed on the support T can also have a flat surface. When ambient light shines on the black matrix BM, some of the light is reflected and emitted by the black matrix BM, while some of the light is reflected uniformly, thereby avoiding color separation in the display panel 10 and improving the display effect of the display panel 10.

[0253] Specifically, in some embodiments, as shown in FIG13, the surfaces of the plurality of filter units 41 on the side away from the substrate 1 are flush.

[0254] The edges of adjacent filter units 41 are connected on the surface of lens 31 away from substrate 1, and the surfaces of multiple filter units 41 on the side away from substrate 1 are flush. In this way, when the black matrix BM is formed later, it can be ensured that the black rectangular BM is formed on a flat surface, so that the final black matrix BM can have a flat surface. Some of the light rays from the external ambient light that hit the black matrix BM are reflected by the black matrix BM and then emitted. The part of the light rays reflected by the black matrix BM can be uniformly reflected, thereby avoiding color separation phenomenon in the display panel 10 and improving the display effect of the display panel 10.

[0255] Based on any of the foregoing embodiments, in the orthographic projection onto the substrate 1, the shape of the filter unit 41 includes at least one of a circle, an ellipse, and a polygon. In the display panel 10, the shapes of the filter units 41 may all be the same, or they may be multiple (two or more) of irregular shapes such as circles, ellipses, polygons, or other shapes.

[0256] For example, as shown in Figures 3, 5, and 9, the filter unit 41 is rectangular in shape. In this case, two adjacent filter units 41 may be in contact without overlapping, or their edges may overlap.

[0257] For example, as shown in Figures 7 and 12, in the display panel 10, a portion of the filter units 41 are circular in shape. These filter units 41 can be set independently of each other and do not overlap.

[0258] Another part of the filter unit 41 can be connected to each other to form a whole film structure. This whole film structure has an opening provided for the color filter part 411 corresponding to the filter unit 41 with a different color.

[0259] That is, although the display panel 10 has at least one filter unit 41 of a filter color that is connected to each other as an integral structure, there is no overlap between the filter part 411 of any filter color and the filter unit 41 of the same filter color. Although there may be some overlap between filter units 41 of different filter colors, there is no overlap between filter units 41 of different filter colors in the light emission direction of the light-emitting unit 21 (the light emission direction that can emit light from the display panel 10), thereby ensuring the light emission effect of the light-emitting unit 21 corresponding to the filter part 411.

[0260] In some embodiments, as shown in FIG16, unlike the previous embodiments, a second opening K2 may also contain a filling portion 412 that includes only one filter unit 41, and this filling portion 412 forms a support body T.

[0261] In some embodiments, as shown in FIG17, unlike some of the aforementioned embodiments, although the filling portions 412 of two different filter units 41 stacked within the same second opening K2 form a support T, one of the two filling portions 412 covers the bottom of the second opening K2 and extends along the sidewall of the second opening K2 to the opening end of the second opening K2 (the end away from the substrate 1) and connects with the color filter portion 411.

[0262] A cross-section is taken of this filling portion 412 along a plane perpendicular to the display panel 10, and the resulting cross-sectional shape is, for example, "L"-shaped; or, the shape of this filling portion 412 can also be a triangle, with two sides of this triangle extending along the bottom and sidewall of the second opening K2 respectively, and the third side of this triangle can be a straight line or an arc (the arc may protrude, for example, toward the side away from the substrate 1 or toward the side closer to the substrate 1).

[0263] Based on this, as shown in Figure 17, the other filling part 412 inside the second opening K2 can be filled on the filling part 412 covering the bottom of the second opening K2, and the two together fill the second opening K2, and their top edges are flush or approximately flush.

[0264] In some embodiments, as shown in FIG15, in the orthographic projection onto the substrate 1, the boundary between the third opening K3 of the black matrix BM and the fourth opening K4 on the pixel defining layer 6 has a spacing d3. For example, d3 is greater than or equal to 4 μm. Or, for example, d3 is less than or equal to 6 μm.

[0265] Specifically, in the orthographic projection onto the substrate 1, the fourth opening K4 can be located within the range of the third opening K3. This allows the light emitted by the light-emitting unit 21 to have a larger maximum emission angle, which is beneficial for achieving a wide viewing angle display of the display panel 10.

[0266] Alternatively, in the orthographic projection onto the substrate 1, the third opening K3 can be located within the range of the fourth opening K4. This can, to a certain extent, converge the maximum emission angle of the light emitted by the light-emitting unit 21, which is beneficial for achieving privacy protection display of the display panel 10.

[0267] In some embodiments, as shown in FIG14, the display panel 10 further includes an encapsulation structure 7 disposed on the side of the light-emitting structure layer 2 away from the substrate 1, the encapsulation structure 7 covering a plurality of light-emitting units 21.

[0268] For example, the encapsulation structure 7 can be a single layer or multiple layers.

[0269] For example, the encapsulation structure 7 may include a first inorganic encapsulation layer 71, a second inorganic encapsulation layer 72, and an organic encapsulation layer 73 disposed sequentially along a direction away from the substrate 1, wherein the surface of the encapsulation structure 7 away from the substrate 1 is a flat surface. Alternatively, the encapsulation structure 7 may only include the first inorganic encapsulation layer 71.

[0270] By setting the encapsulation structure 7, water and oxygen in the environment can be prevented from entering the display panel 10, thereby avoiding adverse effects on the light-emitting performance of the light-emitting unit 21 and improving the service life of the display panel 10.

[0271] In some embodiments, as shown in FIG14, the display panel 10 further includes a buffer layer 8, which is disposed between the encapsulation structure 7 and the touch structure layer 5.

[0272] The substrate 1, along with the multiple light-emitting units 21 and the encapsulation structure 7 disposed on the substrate 1, form a single display structure, with the touch structure layer 5 formed on the display structure. By providing a buffer layer 8, the effects of high temperatures that may occur during the formation of the touch structure layer 5 on the light-emitting units 21 can be avoided. At the same time, the bonding tightness between the touch structure layer 5 and the display structure can be increased, preventing the touch structure layer 5 from accidentally peeling off from the display structure and improving the manufacturing yield of the display panel 10.

[0273] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel, comprising: Substrate; A light-emitting structure layer is disposed on the substrate and includes multiple light-emitting units; An optical structure layer is disposed on the side of the light-emitting structure layer away from the substrate; The optical structure layer includes a plurality of first openings, one of the first openings and one of the light-emitting units are overlapped along the thickness direction of the display panel, and the portion of the optical structure layer located between two adjacent first openings forms a lens, the lens having a second opening facing away from the substrate; A filter layer is disposed on the side of the light-emitting structure layer away from the substrate, and includes a plurality of filter units; the filter unit includes a color-filtering part and a filling part, the color-filtering part is located in the first opening, and the filling part of at least one of the filter units is located in the second opening to form a support, the surface of the support on the side away from the substrate is flat.

2. The display panel according to claim 1, wherein, The lens has a second opening, and the filling portions of two adjacent filter units are located within the same second opening.

3. The display panel according to claim 2, wherein, The filling portions of two adjacent filter units are adjacent to each other and do not overlap.

4. The display panel according to claim 2, wherein, The filling portions of two adjacent filter units overlap along the thickness direction of the display panel.

5. The display panel according to claim 1, wherein, The lens has two second openings, which are spaced apart along the line connecting the centers of two adjacent first openings. The filling portions of two adjacent filter units are located within the two second openings.

6. The display panel according to claim 5, wherein, The filling portions of two adjacent filter units are located within the two second openings, respectively.

7. The display panel according to claim 6, wherein, The lens includes a spacer between two second openings, at least one of the filling portions of two adjacent filter units has an edge extending to the upper surface of the spacer, and the filling portions of two adjacent filter units are connected to each other on the upper surface of the spacer.

8. The display panel according to any one of claims 5 to 7, wherein, The filling portions of two adjacent filter units are respectively a first filling portion and a second filling portion. A portion of the first filling portion is located in one of the two second openings, and the other portion of the first filling portion is located in the other of the two second openings. The second filling portion is located in the other second opening.

9. The display panel according to any one of claims 1 to 8, wherein, The second opening extends through the lens.

10. The display panel according to any one of claims 1 to 8, wherein, The depth of the second opening is less than the maximum thickness of the lens.

11. The display panel according to claim 9, wherein, The display panel also includes: A touch structure layer is disposed between the substrate and the filter layer; the touch structure layer includes metal wires, which are located within the range of the second opening in a projected image onto the substrate. The support is in contact with the metal wire and covers the metal wire.

12. The display panel according to claim 9 or 10, wherein, The display panel also includes: A touch structure layer is disposed between the substrate and the filter layer; the touch structure layer includes a metal wire, and when the lens has two second openings, in the orthographic projection onto the substrate, the metal wire is located between the boundaries of the two second openings that are far apart from each other; The spaced portion of the lens located between the two second openings contacts the metal wire and covers at least a portion of the metal wire.

13. The display panel according to claim 12, wherein, The support includes a first sub-support and a second sub-support located within the two second openings respectively; when the second opening penetrates the lens, at least one of the first sub-support and the second sub-support is in contact with the metal wire and covers a portion of the metal wire.

14. The display panel according to claim 10, wherein, The display panel also includes: A touch structure layer is disposed between the substrate and the filter layer; the touch structure layer includes metal wires, which are located within the range of the lens in a positive projection onto the substrate; The lens is in contact with and covers the metal wire.

15. The display panel according to any one of claims 1 to 14, wherein, The edge of the color filter portion of the filter unit extends to the surface of the lens on the side away from the substrate and is connected to the filling portion of the filter unit.

16. The display panel according to any one of claims 1 to 15, wherein, The surfaces of the plurality of filter units on the side away from the substrate are flush.

17. The display panel according to any one of claims 1 to 16, wherein, The display panel also includes: A black matrix is ​​disposed on the side of the support away from the substrate; the black matrix defines a plurality of third openings, one of the third openings overlapping with one of the first openings in the thickness direction of the display panel.

18. The display panel according to any one of claims 1 to 17, wherein, The refractive index of the material of the optical structure layer is different from that of the material of the filter layer.

19. The display panel according to any one of claims 1 to 18, wherein, In a normal projection onto the substrate, the shape of the color filter includes at least one of a circle, an ellipse, a rectangle, and a polygon.

20. A display device, comprising: The display panel as described in any one of claims 1 to 19; The driving circuit is connected to the display panel.

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