Display panel and display device

Abstract

This application discloses a display panel and a display device. 【Solution means】The display panel includes a substrate and a light-shielding layer. The light-shielding layer includes a first light-shielding unit, a second light-shielding unit, and a third light-shielding unit. The outlines of the orthographic projections of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit on the substrate all have a shape with curved sides. The outline sizes of the orthographic projections of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit on the substrate decrease sequentially. The difference between the outline size of the orthographic projection of the second light-shielding unit on the substrate and the average value of the outline sizes of the orthographic projections of the first light-shielding unit and the third light-shielding unit on the substrate is not more than a preset value.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202210961536.4, entitled "Display Panel and Display Device," filed on August 11, 2022, and Chinese Patent Application No. 202211509545.6, entitled "Display Panel and Display Device," filed on November 29, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application belongs to the technical field of electronic products, and particularly to display panels and display devices. [Background technology]

[0003] With the development of display technology, people not only demand a smooth user experience from electronic products, but also increasingly higher requirements for visual experience. Therefore, a high screen-to-body ratio has become the current research direction. For electronic products, the installation of optical elements such as front cameras inevitably occupies a certain amount of space, thereby affecting the screen-to-body ratio. To improve the screen-to-body ratio and achieve full-screen display, researchers are considering the implementation of under-screen optical elements. Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional technology, optical elements such as cameras are generally installed below a display panel. However, because the display panel generally has a light-shielding structure, diffraction is likely to occur when light passes through the display panel and reaches the optical elements, which has a significant impact on the normal operation of the optical elements.

[0005] Therefore, new display panels and display devices are needed. [Means for solving the problem]

[0006] The embodiments of the present application provide a display panel and a display device that adjust the diffraction phenomenon of external light in the first shading unit, the second shading unit, and the third shading unit, improve the effect of diffraction on the operation of optical elements, and further improve the operating effect of the optical elements, by making the difference between the contour size of the orthogonal projection on the substrate of the second shading unit and the average contour size of the orthogonal projection on the substrate of the first shading unit and the third shading unit equal to or less than a preset value.

[0007] In a first aspect, an embodiment of the present application provides a display panel having a display area and a non-display area, the display area including a first sub-pixel area, a second sub-pixel area, and a third sub-pixel area having different emission colors, the display panel including a substrate and a light-shielding layer provided on one side of the substrate, the light-shielding layer including a first light-shielding unit located in the first sub-pixel area, a second light-shielding unit located in the second sub-pixel area, and a third light-shielding unit located in the third sub-pixel area, wherein the contours of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit when orthogonally projected on the substrate are all figures with curved sides, the contour sizes of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit when orthogonally projected on the substrate are successively smaller, and a difference between the contour size of the second light-shielding unit when orthogonally projected on the substrate and the average contour size of the first light-shielding unit and the third light-shielding unit when orthogonally projected on the substrate is equal to or less than a preset value.

[0008] In a second aspect, an embodiment of the present application provides a display device including the display panel of any of the above embodiments. [Effects of the Invention]

[0009] Compared with the prior art, the display panel of the embodiment of the present application includes a light-shielding layer, in which a first light-shielding unit of the light-shielding layer is located in the first sub-pixel region, a second light-shielding unit is located in the second sub-pixel region, and a third light-shielding unit is located in the third sub-pixel region, and the first, second, and third light-shielding units do not transmit light and are arranged with strong regularity, similar to a lattice structure in an optical structure, which will further affect the light rays entering the optical element from the outside and cause diffraction problems. In order to solve the above problem, the inventors have conducted research and discovered that by arranging the first, second and third shading units in a shape with arc-shaped sides, and by making the difference between the contour size of the orthogonal projection on the substrate of the second shading unit and the average contour size of the orthogonal projection on the substrate of the first and third shading units equal to or less than a preset value, i.e., when the contour size of the orthogonal projection on the substrate of the second shading unit is close to the average contour size of the orthogonal projection on the substrate of the first and third shading units, the diffraction phenomenon of external light in the first, second and third shading units can be adjusted, the impact of diffraction on the operation of the optical element can be reduced, and the operating efficiency of the optical element can be further improved. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a structural schematic diagram of a display panel according to an embodiment of the present application; [Figure 2] FIG. 2 is a diagram showing a film layer structure at a BB portion in FIG. 1 according to one embodiment of the present application. [Figure 3] 3A and 3B are projection views of a first light blocking unit, a second light blocking unit, and a third light blocking unit on a substrate according to an embodiment of the present application. [Figure 4] FIG. 2 is a film layer structure diagram of an anode layer according to an embodiment of the present application. [Figure 5] FIG. 2 is a view showing a film layer structure at a BB portion in FIG. 1 according to another embodiment of the present application. [Figure 6] FIG. 2 is a view showing a film layer structure at a BB portion in FIG. 1 according to another embodiment of the present application. [Figure 7]1 is a structural schematic diagram of a pixel array structure according to an embodiment of the present application; [Figure 8] 8 is a diagram illustrating the diffraction effect for the second sub-pixel region corresponding to the second light-shielding unit in FIG. 7. FIG. [Figure 9] FIG. 10 is a structural schematic diagram of a pixel array structure according to another embodiment of the present application. [Figure 10] 10 is a diagram illustrating the diffraction effect for a second sub-pixel region corresponding to a second light-shielding unit in FIG. 9. FIG. [Figure 11] FIG. 10 is a structural schematic diagram of a pixel array structure according to another embodiment of the present application. [Figure 12] 12 is a diagram illustrating the diffraction effect for the second sub-pixel region corresponding to the second light-shielding unit in FIG. 11. FIG. [Figure 13] 10A and 10B are projection views of a first light blocking unit, a second light blocking unit, and a third light blocking unit on a substrate according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present application will now be described in more detail with reference to the drawings and specific examples.

[0012] When describing the structure of a component, if one layer or region is located "on" or "above" another layer or region, it may be located directly on the other layer or region, or may further include another layer or region between the other layer or region. When the component is inverted, the layer or region would be located "below" or "below" the other layer or region.

[0013] Hereinafter, embodiments of the display panel and the display device will be described with reference to FIGS.

[0014] The display panel according to the embodiments of the present application may be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a micro-OLED display panel (Micro-LED), etc. Hereinafter, an example will be described in which the display panel is an OLED display panel.

[0015] 1 to 3, a display panel according to an embodiment of the present application has a display area AA and a non-display area NA, and the display area AA includes a first sub-pixel area X1, a second sub-pixel area X2, and a third sub-pixel area X3 that emit light of different colors. The display panel includes a substrate 1 and a light-shielding layer provided on one side of the substrate 1. The light-shielding layer includes a first light-shielding unit Z1, a second light-shielding unit Z2, and a third light-shielding unit Z3, and the first light-shielding unit Z1 is located in the first sub-pixel area X1, the second light-shielding unit Z2 is located in the second sub-pixel area X2, and the third light-shielding unit Z3 is located in the third sub-pixel area X3. The contours of the orthogonal projections on the substrate 1 of the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 all have shapes with curved sides, and the contour sizes of the orthogonal projections on the substrate 1 of the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 become smaller sequentially, and the difference between the contour size of the orthogonal projections on the substrate 1 of the second shading unit Z2 and the average value of the contour sizes of the orthogonal projections on the substrate 1 of the first shading unit Z1 and the third shading unit Z3 is less than a preset value.

[0016] The display panel according to the embodiment of the present application includes a substrate 1 and a light-shielding layer. The first light-shielding unit Z1 of the light-shielding layer is located in the first sub-pixel region X1, the second light-shielding unit Z2 is located in the second sub-pixel region X2, and the third light-shielding unit Z3 is located in the third sub-pixel region X3. Therefore, the first light-shielding unit Z1, the second light-shielding unit Z2, and the third light-shielding unit Z3 do not transmit light and are arranged with a strong regularity similar to a lattice structure in an optical structure, which will further affect the light rays entering the optical element from the outside and cause diffraction problems. In order to solve the above problem, the inventors have conducted research and found that by arranging the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 in a shape with arc-shaped sides, and by making the difference between the contour size of the orthogonal projection on the substrate 1 of the second shading unit Z2 and the average contour size of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3 equal to or less than a preset value, i.e., by making the contour size of the orthogonal projection on the substrate 1 of the second shading unit Z2 close to the average contour size of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3, the diffraction phenomenon of external light in the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 can be adjusted, the effect of diffraction on the operation of the optical element can be reduced, and the operating effect of the optical element can be further improved.

[0017] In this embodiment, the first light-shielding unit Z1, the second light-shielding unit Z2, and the third light-shielding unit Z3 may include other structures with low light transmittance or no light transmission, such as an anode, an organic layer, or an inorganic layer, exhibiting a periodic pattern. When external light passes through the first light-shielding unit Z1, the second light-shielding unit Z2, and the third light-shielding unit Z3, a corresponding diffraction pattern is generated according to the outer edge shapes of the first light-shielding unit Z1, the second light-shielding unit Z2, and the third light-shielding unit Z3. When adjusting the outline size of the orthogonal projection of the second light-shielding unit Z2 on the substrate 1, the relative distance between the second light-shielding unit Z2 and the first light-shielding unit Z1 or the third light-shielding unit Z3 also changes, and the change in the relative distance also changes the diffraction effect. The inventor's experiments have shown that when the contour size of the orthogonal projection on the substrate 1 of the second shading unit Z2 is adjusted to be close to the average value of the contour sizes of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3, the diffracted light intensity is most converged, the distribution of the emitted light after diffraction is more uniform, the moire phenomenon is weaker, and the diffraction problem of the display panel is significantly improved.

[0018] Specifically, the outline size is the size of a figure formed by the outer edge outlines of the first light shielding unit Z1, the second light shielding unit Z2, and the third light shielding unit Z3 when orthogonally projected onto the substrate 1.

[0019] Optionally, the display area AA includes adjacent first and second display areas AA1 and AA2, the light transmittance of the first display area AA1 being greater than the light transmittance of the second display area AA2, and a light-shielding layer being provided in at least the first display area AA1.

[0020] The first display area AA1 is a light-transmitting area for installing optical elements such as a camera, a fingerprint recognition element, etc., and it can be seen that the light transmittance of the first display area AA1 is greater than that of the second display area AA2 so that the corresponding optical elements can receive a sufficient amount of incident light to ensure their imaging effect.

[0021] In some selectable embodiments, the preset value is 2 μm or less, and it can be seen that the contour dimensions of the orthogonal projection of the second shading unit Z2 on the substrate 1 must be within a range of 2 μm plus / minus the average value of the contour dimensions of the orthogonal projection of the first shading unit Z1 and the third shading unit Z3 on the substrate 1.

[0022] It can be seen that the diffraction problem is most significantly improved when the contour size of the orthogonal projection of the second light blocking unit Z2 on the substrate 1 is equal to the average of the contour sizes of the orthogonal projection of the first light blocking unit Z1 and the third light blocking unit Z3 on the substrate 1. However, taking into account factors such as manufacturing errors and process accuracy, the diffraction problem can be improved if the difference between the contour size of the orthogonal projection of the second light blocking unit Z2 on the substrate 1 and the average of the contour sizes of the orthogonal projection of the first light blocking unit Z1 and the third light blocking unit Z3 on the substrate 1 is within 2 μm. For example, the preset value may be equal to a value such as 0.5 μm, 1 μm, 1.5 μm, or 2 μm, and is not particularly limited. The smaller the preset value overall, the better the problem of uneven light transmission due to light diffraction can be avoided.

[0023] To facilitate manufacturing, it is only necessary to adjust the maximum contour dimension of the orthogonal projection on the substrate 1 of the second shading unit Z2 so that the maximum contour dimension of the orthogonal projection on the substrate 1 of the second shading unit Z2 is equal to the average value of the maximum contour dimensions of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3.

[0024] As shown in Figure 3, the maximum contour size of the orthogonal projection of the first shading unit Z1 on the substrate 1 is a, the maximum contour size of the orthogonal projection of the second shading unit Z2 on the substrate 1 is b, and the maximum contour size of the orthogonal projection of the third shading unit Z3 on the substrate 1 is c, and the preset value is the average value of a and c minus b.

[0025] Referring to Figure 2, in some optional embodiments, the display panel further includes a pixel definition layer 2, which is provided on one side of the substrate 1, and which includes a first pixel opening K1, a second pixel opening K2, and a third pixel opening K3, wherein at least a portion of the orthogonal projection of the first shading unit Z1 on the pixel definition layer 2 is located within the first pixel opening K1, at least a portion of the orthogonal projection of the second shading unit Z2 on the pixel definition layer 2 is located within the second pixel opening K2, and at least a portion of the orthogonal projection of the third shading unit Z3 on the pixel definition layer 2 is located within the third pixel opening K3.

[0026] The size of the first sub-pixel region X1 may correspond to the size of the first pixel opening K1, the size of the second sub-pixel region X2 may correspond to the size of the second pixel opening K2, and the size of the third sub-pixel region X3 may correspond to the size of the third pixel opening K3. In the embodiments of the present application, when the sizes of the first light blocking unit Z1, the second light blocking unit Z2, and the third light blocking unit Z3 are adjusted to reduce diffraction, the first pixel opening K1, the second pixel opening K2, and the third pixel opening K3 can maintain their original sizes, i.e., the aperture ratio of the display panel can be maintained as is, ensuring that the display effect of the display panel is not affected. The phrase "at least a portion of the orthogonal projection of the first light blocking unit Z1 on the pixel definition layer 2 is located within the first pixel opening K1" refers only to the positional relationship between the orthogonal projection of the first light blocking unit Z1 and the first pixel opening K1, and does not refer to the fact that the first light blocking unit Z1 is located within the first pixel opening K1.

[0027] In this embodiment, the material of the pixel definition layer 2 may be hexamethyldisiloxane, epoxy resin, or polyimide (PI), or may be other silicone-based adhesive materials with a light transmittance of 90% or more, or other organic adhesive materials with a slightly lower light transmittance (greater than 80%) and a slightly higher bending strength, but this embodiment is not limited to these.

[0028] Optionally, as shown in FIG. 2, the display panel further includes an anode layer Y, at least a portion of which also serves as a light-shielding layer. As can be understood, in addition to the anode layer Y, the display panel further includes display panel functional layers such as a light-emitting material layer 3, a cathode layer 4, metal wiring, pixel circuit elements, and a substrate, and the materials used in these display panel functional layers have relatively high light transmittance.

[0029] In this embodiment, the anode layer Y is also provided corresponding to the pixel opening of the pixel definition layer 2, and because of its low light transmittance, at least a part of the anode layer Y also serves as a light-shielding layer. By adjusting the size of the anode layer Y, the diffraction problem can be improved.

[0030] Optionally, the anode layer Y is generally made of a material with a high work function to improve hole injection efficiency. For example, it may be a single layer of gold (Au), platinum (Pt), titanium (Ti), or silver (Ag), or a composite structure layer such as an indium tin oxide-silver-indium tin oxide film. The cathode layer 4 is generally made of a material with a low work function to facilitate electron injection and reduce heat generation during operation, thereby extending the service life of the OLED device. The cathode layer 4 may be made of a metal material such as silver, aluminum, lithium, magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In), or an alloy of these metal materials, such as magnesium-silver alloy (Mg / Ag) or lithium-aluminum alloy (Li / Al). Because the material used for the cathode layer 4 has high light transmittance and is usually formed over the entire layer, the cathode layer 4 does not affect diffraction.

[0031] Referring to FIG. 2, in some alternative embodiments, the anode layer Y includes a first sub-electrode Y1, a second sub-electrode Y2, and a third sub-electrode Y3, in which the first sub-electrode Y1 doubles as the first light-shielding unit Z1, the second sub-electrode Y2 doubles as the second light-shielding unit Z2, and the third sub-electrode Y3 doubles as the third light-shielding unit Z3, and the first sub-electrode Y1, the second sub-electrode Y2, and the third sub-electrode Y3 are all reflective electrodes.

[0032] In this embodiment, to achieve a light-blocking effect, the first sub-electrode Y1, the second sub-electrode Y2, and the third sub-electrode Y3 can all be made of opaque metal, and the first sub-electrode Y1 can easily double as the first light-blocking unit Z1, the second sub-electrode Y2 can easily double as the second light-blocking unit Z2, and the third sub-electrode Y3 can easily double as the third light-blocking unit Z3. In this embodiment, the first sub-electrode Y1, the second sub-electrode Y2, and the third sub-electrode Y3 are all reflective electrodes, that is, the anode layer Y may have a single-layer structure including only one light-blocking electrode layer, or the entire anode layer Y may double as a light-blocking layer.

[0033] 4, in some alternative embodiments, the anode layer Y includes a reflective electrode layer Y4, which also functions as a light-shielding layer. In this embodiment, to ensure the signal transmission effect of the anode layer Y, the anode layer Y may further include other film layers in addition to the reflective electrode layer Y4. For example, the anode layer Y may further include at least one translucent electrode layer Y5, which is specifically made of indium tin oxide and has high light transmittance.

[0034] Optionally, the anode layer Y includes two transparent electrode layers Y5, each of which is disposed on either side of the reflective electrode layer Y4. For example, the transparent electrode layer Y5 can be made of indium tin oxide. The reflective electrode layer Y4 can be made of silver, and the anode layer Y includes an indium tin oxide-silver-indium tin oxide composite film layer structure.

[0035] In addition to the above-described configuration in which the anode layer Y also serves as a light-shielding layer, a light-shielding layer may be provided separately. Referring to Fig. 5, specifically, the light-shielding layer is provided between the anode layer Y and the substrate 1.

[0036] In this embodiment, the light-shielding layer can be manufactured by an additional process, for example, the first light-shielding unit Z1, the second light-shielding unit Z2, and the third light-shielding unit Z3 of the light-shielding layer all include at least one of a black adhesive layer, ink, and metal. Alternatively, to reduce costs, a portion of the light-shielding material that is originally located between the anode layer Y and the substrate 1 can also be used as the light-shielding layer.

[0037] For example, the display panel further includes a pixel circuit electrically connected to the anode layer Y, the pixel circuit including a thin film transistor TFT and a signal line, the thin film transistor TFT including an active layer J, a gate G, a source S, and a drain D, the materials of which may include one or a combination of molybdenum, titanium, aluminum, copper, etc. The gate G of the thin film transistor TFT generally receives a control signal and turns the thin film transistor TFT on or off according to the control of the control signal. One of the source S and the drain D of the thin film transistor TFT is connected to the anode layer Y.

[0038] Since some of the signal lines or gates G, sources S, and drains D of the pixel circuit are made of opaque metal, the opaque film layer in these areas can also be partially used as a light-shielding layer, thereby reducing costs.

[0039] 6, in some alternative embodiments, the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 each include at least two sub-shading portions M. At least two of the sub-shading portions M of the first shading unit Z1 are provided in different layers, at least two of the sub-shading portions M of the second shading unit Z2 are provided in different layers, and at least two of the sub-shading portions M of the third shading unit Z3 are provided in different layers. The above-mentioned provision can be performed for one, two, or three of the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3.

[0040] In this embodiment, the first shading unit Z1 may be formed by at least two sub-shading parts M, and it can be seen that in the sub-shading parts M forming the first shading unit Z1, the at least two sub-shading parts M are arranged on different layers so as to rationally utilize the space of each layer and facilitate installation.

[0041] Note that the shape formed by connecting the sub-light-shielding portions M of the first light-shielding unit Z1 by orthogonal projection onto the substrate 1 is the orthogonal projection shape of the required first light-shielding unit Z1 on the substrate 1. Similarly, the shapes formed by connecting the sub-light-shielding portions M of the second light-shielding unit Z2 and the third light-shielding unit Z3 by orthogonal projection onto the substrate 1 are the orthogonal projection shapes of the required second light-shielding unit Z2 and the third light-shielding unit Z3 on the substrate 1, respectively. For example, one sub-light-shielding portion M of the first light-shielding unit Z1 may be provided in the same layer as the source, and the other sub-light-shielding portion M may be provided in the same layer as the gate or the active layer, as long as the sub-light-shielding portions M can be connected to form the shape of the required first light-shielding unit Z1.

[0042] In some alternative embodiments, the first light blocking unit Z1, the second light blocking unit Z2, and the third light blocking unit Z3 are all similar in shape.

[0043] The term "similar shapes" specifically refers to the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 having the same shape. For example, the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 may all be circular, with only the radii differing among the three; alternatively, the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 may all be elliptical, and the second shading unit Z2 can be enlarged or reduced in the same proportion to obtain the first shading unit Z1 and the third shading unit Z3. That is, the ratio between the minor axis and the major axis of the elliptical first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 is fixed.

[0044] Specifically, the first shading unit Z1, the second shading unit Z2 and the third shading unit Z3 may be circular or approximately circular, and the inventor's experimental measurements have shown that when the first shading unit Z1, the second shading unit Z2 and the third shading unit Z3 are circular or approximately circular, the contour size of the orthogonal projection of the second shading unit Z2 on the substrate 1 is limited to be close to the average value of the contour sizes of the orthogonal projection of the first shading unit Z1 and the third shading unit Z3 on the substrate 1, thereby significantly improving the diffraction problem.

[0045] Referring to FIG. 3, in some alternative embodiments, the orthogonal projections of the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 on the substrate 1 are all circular, and the difference between the diameter of the second shading unit Z2 and the average diameter of the first shading unit Z1 and the third shading unit Z3 is 2 μm or less.

[0046] The inventor's experimental measurements showed that when the first shading unit Z1, the second shading unit Z2, and the third shading unit Z3 are all circular, the resulting diffraction pattern resembles concentric circles, and the closer the diameter of the second shading unit Z2 is adjusted to be to the average value of the diameters of the first shading unit Z1 and the third shading unit Z3, the more the diffracted light converges to the center of the diffraction pattern, and the more effectively the problem of divergence of the diffracted light is improved.

[0047] The difference between the diameter of the second light-shielding unit Z2 and the average value of the diameters of the first light-shielding unit Z1 and the third light-shielding unit Z3 is 2 μm or less, i.e., the difference between the radius of the second light-shielding unit Z2 and the average value of the radii of the first light-shielding unit Z1 and the third light-shielding unit Z3 is 1 μm or less. For example, if the radius of the first light-shielding unit Z1 is 10.1 μm and the radius of the third light-shielding unit Z3 is 7.3 μm, the average value of the radii of the first light-shielding unit Z1 and the third light-shielding unit Z3 is 8.7 μm, so the radius of the second light-shielding unit Z2 needs to be between 8.6 μm and 8.8 μm.

[0048]

[0033] The inventors have conducted experiments and found that the technical solutions of the embodiments of the present application can effectively alleviate the diffraction problem for different pixel array structures. Referring to Figures 7 to 12, taking the orthogonal projection of the first light blocking unit Z1, the second light blocking unit Z2, and the third light blocking unit Z3 on the substrate 1 as an example, a circular shape is used. Simulation experiments were conducted with the radius of the first light blocking unit Z1 fixed at 10.1 μm, the radius of the third light blocking unit Z3 fixed at 7.3 μm, and the radius of the second light blocking unit Z2 varied from 7.4 μm to 10.2 μm. The diffraction effect of the second sub-pixel region X2 corresponding to the second light blocking unit Z2 is as shown in Figures 8, 10, and 12. It can be seen from the figures that the diffracted light intensity is most converged and the diffraction effect is best when the radius of the second light blocking unit Z2 is between 8.6 μm and 9.0 μm. The median value between 8.6 μm and 9.0 μm is 8.8 μm, and the average value of the radius of the first shading unit Z1, 10.1 μm, and the radius of the third shading unit Z3, 7.3 μm, is 8.7 μm, which is exactly within the range between 8.6 μm and 9.0 μm, which further means that the technical solution of the embodiment of the present invention can effectively improve the diffraction problem.

[0049] As can be seen from the diffraction effect diagram obtained by the above simulation experiment, the technical solution in which the difference between the maximum contour size of the orthogonal projection on the substrate 1 of the second shading unit Z2 of the present application and the average value of the maximum contour size of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3 is less than a preset value can be applied to different pixel array structures.

[0050] Optionally, the maximum contour size of the second light blocking unit Z2 can be equal to the average of the maximum contour sizes of the first light blocking unit Z1 and the third light blocking unit Z3 to ensure an improvement effect on diffraction problems. For example, if the radius of the first light blocking unit Z1 is 10.1 μm and the radius of the third light blocking unit Z3 is 7.3 μm, the radius of the second light blocking unit Z2 can be equal to 8.7 μm.

[0051] Referring to FIG. 13, optionally, the orthogonal projections of the first light blocking unit Z1, the second light blocking unit Z2, and the third light blocking unit Z3 on the substrate 1 may adopt other shapes in addition to a circle. For example, the orthogonal projections of the first light blocking unit Z1, the second light blocking unit Z2, and the third light blocking unit Z3 on the substrate 1 are all elliptical, and the difference between the major axis length of the second light blocking unit Z2 and the average value of the major axis lengths of the first light blocking unit Z1 and the third light blocking unit Z3 is 2 μm or less, and / or the difference between the minor axis length of the second light blocking unit Z2 and the average value of the minor axis lengths of the first light blocking unit Z1 and the third light blocking unit Z3 is 1 μm or less.

[0052] In addition, since the major axis length of the ellipse is longer than the minor axis length, the difference between the major axis length of the second shading unit Z2 and the average value of the major axis lengths of the first shading unit Z1 and the third shading unit Z3 is also larger than the difference between the minor axis length of the second shading unit Z2 and the average value of the minor axis lengths of the first shading unit Z1 and the third shading unit Z3, which ensures that the influence of the major axis length and the minor axis length of the first shading unit Z1 on the diffraction problem is uniformly adjusted. Of course, in addition to the circle and the ellipse, the first shading unit Z1, the second shading unit Z2 and the third shading unit Z3 may also be other approximately circular shapes, such as a rectangle with all four corners rounded, and are not particularly limited.

[0053] An embodiment of the present application further provides a display device including the display panel of any of the above embodiments.

[0054] Optionally, the display area AA of the display panel includes adjacent first and second display areas AA1 and AA2, the light transmittance of the first display area AA1 being greater than the light transmittance of the second display area AA2, and the display device further includes an optical element arranged corresponding to the first display area AA1.

[0055] The optical element may specifically be an element that has certain requirements for light, such as a camera, a fingerprint recognition element, etc.

[0056] The first shading unit Z1, the second shading unit Z2 and the third shading unit Z3 are arranged in a shape with arc-shaped sides, and the difference between the maximum contour size of the orthogonal projection on the substrate 1 of the second shading unit Z2 and the average value of the maximum contour size of the orthogonal projection on the substrate 1 of the first shading unit Z1 and the third shading unit Z3 is less than a preset value, thereby adjusting the diffraction effect of external light in the first display area AA1, improving the diffraction problem and further improving the operating effect of the optical element.

[0057] The display device according to the embodiments of the present application has the technical effects of the technical solution of the display panel in any of the above embodiments, and the same or corresponding configurations and interpretations of terms as those in the above embodiments will not be described here.

[0058] The display device according to the embodiments of the present application may be applied to a mobile phone, or any electronic product with a display function, including a television, a laptop computer, a desktop display panel, a tablet computer, a digital camera, a smart bracelet, smart glasses, an in-vehicle display panel, a medical device, an industrial control device, a touch interaction terminal, etc., but the embodiments of the present application are not particularly limited thereto.

Claims

1. A display panel having a display area and a non-display area, the display region includes a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region that emit light of different colors; The display panel includes: A substrate; a light-shielding layer provided on one side of the substrate, the light-shielding layer including a first light-shielding unit located in the first sub-pixel region, a second light-shielding unit located in the second sub-pixel region, and a third light-shielding unit located in the third sub-pixel region; the contours of the first, second and third shading units when orthogonally projected on the substrate all have curved sides, the contour sizes of the first, second and third shading units when orthogonally projected on the substrate successively decrease, and a difference between the contour size of the second shading unit when orthogonally projected on the substrate and the average value of the contour sizes of the first and third shading units when orthogonally projected on the substrate is equal to or less than a preset value; the display panel further includes an anode layer, and at least a part of the anode layer also serves as the light-shielding layer; the anode layer includes a reflective electrode layer, and the reflective electrode layer also serves as the light-shielding layer; the anode layer includes two light-transmitting electrode layers, and the two light-transmitting electrode layers are provided on both sides of the reflective electrode layer, respectively. Display panel.

2. The preset value is 2 μm or less. The display panel according to claim 1 .

3. a maximum outline size of the second shading unit when orthogonally projected on the substrate is equal to an average value of maximum outline sizes of the first shading unit and the third shading unit when orthogonally projected on the substrate; The display panel according to claim 1 .

4. a pixel definition layer disposed on one side of the substrate, the pixel definition layer including a first pixel opening, a second pixel opening, and a third pixel opening; At least a portion of an orthogonal projection of the first light blocking unit on the pixel definition layer is located within the first pixel opening, at least a portion of an orthogonal projection of the second light blocking unit on the pixel definition layer is located within the second pixel opening, and at least a portion of an orthogonal projection of the third light blocking unit on the pixel definition layer is located within the third pixel opening. The display panel according to claim 1 .

5. the anode layer includes a first sub-electrode, a second sub-electrode, and a third sub-electrode, the first sub-electrode also serving as the first light-shielding unit, the second sub-electrode also serving as the second light-shielding unit, and the third sub-electrode also serving as the third light-shielding unit; the first sub-electrode, the second sub-electrode, and the third sub-electrode are all reflective electrodes; The display panel according to claim 4 .

6. a pixel definition layer disposed on one side of the substrate, the pixel definition layer including a first pixel opening, a second pixel opening, and a third pixel opening; at least a portion of an orthogonal projection of the first light blocking unit on the pixel definition layer is located within the first pixel opening, at least a portion of an orthogonal projection of the second light blocking unit on the pixel definition layer is located within the second pixel opening, and at least a portion of an orthogonal projection of the third light blocking unit on the pixel definition layer is located within the third pixel opening; further comprising an anode layer; the light-shielding layer is provided between the anode layer and the substrate, the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit each include at least one of a black adhesive layer, an ink, and a metal; The display panel according to claim 1 .

7. each of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit includes at least two sub-light-shielding portions; At least two of the sub-light-shielding portions of the first light-shielding unit are provided in different layers, or At least two of the sub-light-shielding portions of the second light-shielding unit are provided in different layers, or At least two of the sub-light-shielding portions of the third light-shielding unit are provided in different layers. The display panel according to claim 1 .

8. orthogonal projections of the first light-shielding unit, the second light-shielding unit, and the third light-shielding unit on the substrate are all similar figures; The display panel according to claim 1 .

9. A display panel according to any one of claims 1 to 8, Display device.

10. the display area of ​​the display panel includes a first display area and a second display area adjacent to each other, and the light transmittance of the first display area is greater than the light transmittance of the second display area; the display device further includes an optical element provided in correspondence with the first display area; The display device according to claim 9 .

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