Display panel and display apparatus

Abstract

A display panel and a display apparatus. The display panel comprises a base substrate, a pixel define layer, and a light-shielding layer which are stacked, wherein the pixel define layer is provided with a plurality of pixel units; each pixel unit comprises a plurality of sub-pixels of different colors; at least one sub-pixel is divided into a plurality of segmented sub-pixels by means of the pixel define layer; a plurality of light-transmitting holes are arranged in an array in the light-shielding layer; any light-transmitting hole is arranged opposite one segmented sub-pixel; and the orthographic projections of the light-transmitting holes and the segmented sub-pixels on the base substrate at least partially overlap, so as to limit the light emission angle of each segmented sub-pixel.

Description

Display panel and display device

[0001] The present application claims priority to the Chinese patent application No. 202410534714.4, filed on April 29, 2024, and entitled "Display panel and display device", the contents of which are to be understood as incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to, but are not limited to, the technical field of display, and in particular, to a display panel and a display device. BACKGROUND

[0003] In recent years, with the continuous evolution and increasing perfection of OLED (Organic Light-Emitting Diode) technology, display devices based on OLED have been widely used in many industries and application scenarios. In certain specific environments, considering privacy protection and visual interference issues, devices equipped with OLED display panels should have the need to control the emission angle of light sources to avoid the leakage of sensitive information and reduce unnecessary visual interference of screen light on nearby personnel. When optimizing the light-emitting angle of the display panel, simply limiting the emission angle of the edge of the sub-pixel is difficult to improve the emission direction of the light in other parts of the sub-pixel. When trying to increase the limiting range of the sub-pixel, the overall light-emitting performance of the sub-pixel is poor, thereby weakening the effective brightness output and overall display quality of the display panel.

[0004] SUMMARY

[0005] The following is a summary of the subject matter of the detailed description of the present disclosure. This summary is not intended to limit the scope of protection of the claims.

[0006] The present disclosure provides a display panel, comprising: a laminated substrate, a pixel definition layer and a light shielding layer, the pixel definition layer is provided with a plurality of pixel units;

[0007] The pixel unit comprises a plurality of sub-pixels of different colors, at least one of the sub-pixels is divided into a plurality of divided sub-pixels by the pixel definition layer; the light shielding layer is arranged with a plurality of light transmission holes, any of the light transmission holes is arranged opposite to one of the divided sub-pixels, and the light transmission hole and the divided sub-pixel at least partially overlap in the orthographic projection of the substrate, so as to limit the light-emitting angle of the divided sub-pixel.

[0008] The present disclosure also provides a display device comprising the display panel described in the above embodiments.

[0009] Other aspects can become apparent after reading and understanding the drawings and detailed description.

[0010] SUMMARY OF DRAWINGS

[0011] FIG. 1 is a structural schematic diagram of a display panel in an exemplary embodiment of the present disclosure;

[0012] FIG. 2A is a structural schematic diagram of a pixel unit in an exemplary embodiment of the present disclosure;

[0013] FIG. 2B is a positional relationship diagram of sub-pixels of different colors in FIG. 2A;

[0014] FIG. 3A is a structural schematic diagram of another pixel unit in an exemplary embodiment of the present disclosure;

[0015] FIG. 3B is a positional relationship diagram of sub-pixels of different colors in FIG. 3A;

[0016] FIG. 4 is a schematic diagram of arrangement of split sub-pixels in sub-pixels of different colors in an exemplary embodiment of the present disclosure;

[0017] FIG. 5A is a positional relationship diagram of a first directional opening in a first form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0018] FIG. 5B is a positional relationship diagram of a first directional opening in a second form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0019] FIG. 5C is a positional relationship diagram of a first directional opening in a third form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0020] FIG. 6A is a positional relationship diagram of a second directional opening in a first form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0021] FIG. 6B is a positional relationship diagram of a second directional opening in a second form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0022] FIG. 6C is a positional relationship diagram of a second directional opening in a third form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0023] FIG. 6D is a positional relationship diagram of a second directional opening in a fourth form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0024] FIG. 6E is a positional relationship diagram of a second directional opening in a fifth form and split sub-pixels in an exemplary embodiment of the present disclosure;

[0025] FIG. 6F is a positional relationship diagram of a second directional opening in a sixth form and split sub-pixels in an exemplary embodiment of the present disclosure.

[0026] Detailed description

[0027] The specific embodiments of the present disclosure will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present disclosure and are merely exemplary but not used to limit the scope of the present disclosure. The embodiments in the present disclosure and the features in the examples can be combined with each other as long as there is no conflict.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood as the common meanings thereof by those having ordinary skills in the art to which the present disclosure belongs. The terms "first", "second", and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are only used to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0029] The exemplary embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0030] At present, in some specific environments, due to the user's privacy protection and visual interference problems, the device equipped with an OLED display panel needs to control the emission angle of the light source to avoid the leakage of sensitive information and reduce unnecessary visual interference of the screen light on nearby personnel. Taking the car screen applied to the vehicle and the entertainment screen at the co-driver position as an example, when the light of the display panel along the vertical direction is projected to the front windshield of the vehicle, the front windshield can further reflect the light to the driver's line of sight, thereby potentially interfering with the safe driving of the driver. Moreover, considering the entertainment needs of the passenger at the co-driver position, the light of the entertainment screen at the co-driver position along the horizontal direction needs to maintain a certain brightness and viewing angle. To enable the co-driver to have a good viewing experience and also take into account the dual goals of not interfering with the light of the main driver, the light emission angle of the entertainment screen and the car screen needs to be carefully controlled and optimized.

[0031] In the display panel preparation process, the light emitting angle of the display panel needs to be optimized in advance. In general, the light emitting angle of the sub-pixel can be limited, that is, by limiting the edge area of the sub-pixel through the BM (Black Matrix) of the display panel to improve the light emitting angle of the entire display panel. In order to make the display panel have good display effect, the sub-pixel needs to have sufficient output light intensity. Therefore, the BM can only limit the edge area of the sub-pixel, and it is difficult to improve the light emitting direction of other parts inside the sub-pixel. When trying to increase the limiting range of the BM to the sub-pixel, the overall light intensity of the sub-pixel will be reduced, affecting the light emitting performance of the sub-pixel, and it is difficult to ensure the effective brightness output and overall display quality of the display panel, reducing the use experience and visual sense of the display panel.

[0032] The display panel provided by the example embodiment of the present disclosure includes a laminated substrate 100, a pixel limiting layer 200, and a light shielding layer 300. The pixel limiting layer 200 is provided with a plurality of pixel units 400. The pixel unit 400 includes a plurality of sub-pixels 410 of different colors. At least one sub-pixel 410 is divided into a plurality of divided sub-pixels 411 by the pixel limiting layer 200. The light shielding layer 300 is arranged with a plurality of light transmission holes 310. Any light transmission hole 310 is arranged opposite to a divided sub-pixel 411. The light transmission hole 310 and the divided sub-pixel 411 at least partially overlap in the orthographic projection of the substrate 100, so as to limit the light emitting angle of the divided sub-pixel 411.

[0033] As shown in FIGS. 1-6F, the display panel provided by the example embodiment of the present disclosure has good display effect and anti-peeping performance. The display panel includes a substrate 100, a pixel limiting layer 200, and a light shielding layer 300. The substrate 100 serves as the bearing body of the display panel, supports and protects part of the components and the subsequent prepared film layer structure in the display panel, and can prevent water and oxygen molecules from the outside from entering the inside of the display panel to interfere with the normal use of the display panel. The pixel limiting layer 200 can be formed on the surface of the substrate 100 by a patterning preparation process, and can support the subsequent prepared film layer structure. The pixel limiting layer 200 is uniformly distributed with a plurality of pixel units 400, which serve as the display light source of the display panel to ensure that the display panel has good display effect.

[0034] The pixel defining layer 200 is provided with a plurality of pixel units 400, and any pixel unit 400 includes a plurality of sub-pixels 410 of different colors for generating light of different colors, which can mix with each other to produce different light effects of the display panel during display of the display panel, so that the display panel can realize color display; at least one sub-pixel 410 in the pixel unit 400 can be divided into a plurality of divided sub-pixels 411 by the pixel defining layer 200, that is, the pixel defining layer 200 is divided into two or more divided sub-pixels 411, which can reduce the area of stray light of the peripheral region of the sub-pixel 410, improve the utilization rate of light, and reduce the interference between adjacent sub-pixels 410, so that the light of the sub-pixel 410 is more uniform; and the pixel defining layer 200 is provided with a light shielding layer 300 away from the substrate 100, and the light shielding layer 300 is arranged with a plurality of light transmission holes 310; for any pixel unit 400, each divided sub-pixel 411 in any sub-pixel 410 is arranged corresponding to a light transmission hole 310 of the light shielding layer 300, and the orthographic projection of the divided sub-pixel 411 on the substrate 100 at least partially overlaps with the orthographic projection of the light transmission hole 310 on the substrate 100; at this time, light can be emitted through the light transmission hole 310, and the light shielding layer 300 of the edge region of the light transmission hole 310 can limit the light of the peripheral region of the corresponding divided sub-pixel 411, so as to restrict the light emitting angle of the divided sub-pixel 411, so as to reduce the field of view of the display panel and achieve the effect of preventing peeping.

[0035] Further, the substrate 100 and the pixel defining layer 200 are further provided with at least one planar layer (not shown in the figure), which can be formed on the surface of the substrate 100 by a PECVD (Plasma Enhanced Chemical Vapor Deposition) process, for performing planarization treatment on the uneven region of the surface of the substrate 100, improving the flatness of the surface of the substrate 100, and improving the continuity and flatness of the film structure formed subsequently, which will not be described herein.

[0036] In addition, at least one planar layer (not shown in the figure) is further provided between the substrate 100 and the pixel defining layer 200, which can be formed on the surface of the substrate 100 by a PECVD (Plasma Enhanced Chemical Vapor Deposition) process, for performing planarization treatment on the uneven region of the surface of the substrate 100, improving the flatness of the surface of the substrate 100, and improving the continuity and flatness of the film structure formed subsequently, which will not be described herein.

[0037] Therefore, the display panel and the display device provided by the example embodiments of the present disclosure further divide the sub-pixel 410 in the pixel unit 400 into a plurality of divided sub-pixels 411 by using the pixel limiting layer 200, and limit and constrain the light-emitting angle of the divided sub-pixel 411 by the arrayed light-transmitting holes of the light-blocking layer 300, so that the divided sub-pixel 411 has good anti-peeping performance, the light-emitting intensity and the light-emitting efficiency of the pixel unit 400 are improved, the display effect of the display panel is optimized, and the overall quality of the display panel is improved.

[0038] In some example embodiments, the divided sub-pixel 411 includes a first side edge 4111 and a second side edge 4112 connected to each other, the length of the first side edge 4111 is greater than the length of the second side edge 4112, and the light-transmitting hole 310 is adapted to the divided sub-pixel 411 to limit the light-emitting angle of the peripheral region of the first side edge 4111 of the divided sub-pixel 411.

[0039] As shown in FIGS. 2A to 6F, by dividing the sub-pixel 410 of the pixel unit 400 into a plurality of divided sub-pixels 411 by using the pixel limiting layer 200, the light-emitting efficiency of the display panel can be improved, and the limiting effect of the light-transmitting hole 310 on the light-emitting angle of the divided sub-pixel 411 is facilitated, and the anti-peeping performance of the display panel is improved; wherein any one of the divided sub-pixels 411 includes a first side edge 4111 and a second side edge 4112, and by making the length of the first side edge 4111 greater than the length of the second side edge 4112, the light intensity of the first side edge 4111 of the divided sub-pixel 411 is greater than the light intensity of the second side edge 4112; and for the light-transmitting hole 310 arranged on the light-blocking layer 300, by making the light-transmitting hole 310 adapted to the divided sub-pixel 411, for example, the shape of the light-transmitting hole 310 is adapted to the shape of the divided sub-pixel 411, the shielding range of the light-blocking layer 300 on the first side edge 4111 of the divided sub-pixel 411 in the edge region of the light-transmitting hole 310 can be increased, the constraining effect of the light-blocking layer 300 on the light rays of the first side edge 4111 is improved, and the light rays of the divided sub-pixel 411 in the overlapping region with the light-transmitting hole 310 can be ensured to be emitted sufficiently, so that the purpose of improving the display effect and the anti-peeping performance is achieved.

[0040] Further, the first side 4111 and the second side 4112 of the same split sub-pixel 411 can be arranged in a straight line or a curve. For example, as shown in FIGS. 2A-6F, the first side 4111 and the second side 4112 of the split sub-pixel 411 can be arranged in a straight line, and the first side 4111 and the second side 4112 can be perpendicular to each other, so as to form a regular split sub-pixel 411, such as a rectangle. In this case, the split sub-pixel 411 in the form of a rectangle can improve the distribution density of the split sub-pixel 411 in the pixel defining layer 200 and enhance the light output intensity of the display panel. In addition, compared with the sub-pixel 410 on the market, the split sub-pixel 411 has a smaller size, and thus is relatively difficult to manufacture. By using the sub-pixel 410 in the form of a rectangle, the manufacturing difficulty of the sub-pixel 410 can be reduced, and the cost can be reduced.

[0041] Further, to improve the independence of each split sub-pixel 411, the distance between adjacent split sub-pixels 411 can be any value in a range from 14 μm to 200 μm, such as 20 μm, 50 μm, 100 μm or 150 μm. The specific value can be selected according to the specific size of the split sub-pixel 411 and the manufacturing process of the display panel, so as to ensure that each sub-pixel 410 has good light efficiency and reduces the interference between adjacent split sub-pixels 411. In addition, the ratio of the length of the first side 4111 to the length of the second side 4112 of the split sub-pixel 411 can be in a range from 1:1 to 7:1, such as 2:1, 3:1, 4:1 or 5:1. In this way, the split sub-pixel 411 can form a relatively regular strip shape, and the regularity of the split sub-pixel 411 in the pixel defining layer 200 can be improved, which is beneficial to reasonable planning of the layout of the split sub-pixel 411.

[0042] In some example embodiments, for the same pixel unit 400, the distance between the center points of two adjacent sub-pixels 410 of different colors is the same.

[0043] By dividing at least one sub-pixel 410 in the pixel unit 400 into a plurality of divided sub-pixels 411, the light intensity of the entire sub-pixel 410 can be improved, the limiting effect of the light shielding layer 300 on the light emission direction of the entire sub-pixel 410 can be improved, and thus the display quality of the display panel can be improved; as shown in FIGS. 2A, 2B and 4, the same pixel unit 400 can be divided into a plurality of sub-pixels 410 by the pixel limiting layer 200, and taking the same pixel unit 400 having three sub-pixels 410 of different colors as an example, the three sub-pixels 410 of different colors can be arranged in a triangular structure, and the connecting lines between two adjacent sub-pixels 410 of different colors form a triangular structure; wherein, by making the distances between the center points of two adjacent sub-pixels 410 of different colors the same, i.e., the triangle formed by the connecting lines of the three sub-pixels 410 is an equilateral triangle, the gaps between the sub-pixels 410 can be filled, the compactness of the pixel can be improved, the space utilization of the pixel unit 400 can be improved, and the invalid display area can be reduced; in addition, the edge display effect can be improved, so that the sub-pixels 410 are uniformly distributed in the pixel limiting layer 200, the color of the edge area of the pixel unit 400 is more uniform, the generation of jagged edges or colored edges is reduced, and thus the influence of the light transmission hole 310 of the light shielding layer 300 on the overall light intensity of the pixel unit 400 is reduced.

[0044] In some example embodiments, the extension directions of the first side edges 4111 of any two divided sub-pixels 411 are the same, and the lengths of the second side edges 4112 of the divided sub-pixels 411 of different colors are the same along the extension directions of the first side edges 4111.

[0045] As shown in FIGS. 2A and 2B, in the same pixel unit 400, by making the extension directions of the first side edges 4111 of any two divided sub-pixels 411 the same and the lengths of the second side edges 4112 of any two divided sub-pixels 411 of different colors the same, the light shielding layer 300 at the edge area of the light transmission hole 310 can be used to limit the light in the area where the first side edges 4111 of the divided sub-pixels 411 of different colors are located, and the limiting effect on the divided sub-pixels 411 can be increased; and along the extension directions of the second side edges 4112 of the divided sub-pixels 411, the lengths of the second side edges 4112 of the divided sub-pixels 411 of different colors are the same, which reduces the difference between the lights generated by the divided sub-pixels 411 of different colors, helps to improve the balance in the pixel unit 400, reduces the color distortion caused by the size difference between the sub-pixels 410, improves the resolution and color uniformity of the display panel; in addition, the same width of the sub-pixels 410 can make the distribution of each color on the display panel more uniform, avoid color deviation caused by the size difference between the sub-pixels 410, and help to achieve color balance, thereby improving the overall image quality.

[0046] In some exemplary embodiments, for the same pixel unit 400, the center points of any two sub-pixels 410 of different colors are located on the same straight line.

[0047] By dividing at least one sub-pixel 410 in pixel unit 400 into multiple sub-pixels 411, the light emission intensity of the entire sub-pixel 410 can be improved, the limiting effect of the light-shielding layer 300 on the light emission direction of the entire sub-pixel 410 can be enhanced, the crosstalk between adjacent sub-pixels 410 can be reduced, and the display quality of the display panel can be improved. As shown in Figures 3A and 3B, the same pixel unit 400 can be divided into multiple sub-pixels 410 by the pixel limiting layer 200. Taking the same pixel unit 400 having three sub-pixels 410 of different colors as an example, and any two sub-pixels of different colors... The center points of pixels 410 are located on the same straight line, that is, the center points of all sub-pixels 410 in pixel unit 400 are located on the same straight line. This can improve the alignment accuracy of sub-pixels 410 of different colors, ensure that sub-pixels 410 of different colors can be evenly distributed in pixel limiting layer 200, reduce gaps between pixels, thereby improving display quality and improving edge sharpness and color transition smoothness. In addition, by setting the center points of all sub-pixels 410 on the same straight line, it is beneficial to adjust the distribution density of sub-pixels 410 in the display panel, and improve the fineness and clarity of the display process.

[0048] In some exemplary embodiments, the first side edges 4111 of any two segmented sub-pixels 411 extend in the same direction and have the same length.

[0049] As shown in Figures 3A and 3B, in the same pixel unit 400, by making the extension directions of the first side edges 4111 of any two segmented sub-pixels 411 the same, that is, by arranging all the segmented sub-pixels in parallel, it helps to improve the uniformity of color in the pixel unit 400 and reduce color distortion and discontinuity. Since multiple segmented sub-pixels 411 are arranged in parallel, the utilization rate of sub-pixels 410 can be improved, and the low color saturation of the pixel unit 400 caused by uneven size of sub-pixels 410 can be avoided. This helps to maintain the consistency of color and brightness under different viewing angles and reduces the impact of viewing angle changes on the display effect.

[0050] In some exemplary embodiments, at least two segmentation sub-pixels 411 are green segmentation sub-pixels 411, and the first side edges 4111 of the green segmentation sub-pixels 411 extend in the same direction;

[0051] As shown in FIGS. 2A-6F, in the display panel, due to the high sensitivity of the human eye to green light spectrum, by arranging at least two green split sub-pixels 411 in the pixel unit 400, the color saturation of the pixel unit 400 as a whole can be improved, and the color delicacy can be improved. Due to the limited size of the pixel unit 400, by splitting one sub-pixel 410 into at least two smaller sub-pixels 410 and arranging them with the surrounding red and blue sub-pixels 410, the resolution of the screen can be effectively improved, so that the display panel can more easily achieve high resolution effect.

[0052] In some example embodiments, the at least two split sub-pixels 411 include a red split sub-pixel 411 and a blue split sub-pixel 411, and the extension direction of the first side 4111 of the red split sub-pixel 411, the extension direction of the first side 4111 of the blue split sub-pixel 411, and the extension direction of the first side 4111 of the green split sub-pixel 411 are the same.

[0053] As shown in FIGS. 2A-6F, for the same pixel unit 400, at least one red split sub-pixel 411 and at least one blue split sub-pixel 411 are further arranged in the pixel unit 400 except the green split sub-pixel 411, so that the display panel can realize color display. By arranging the extension direction of the first side 4111 of the red split sub-pixel 411, the extension direction of the first side 4111 of the blue split sub-pixel 411, and the extension direction of the first side 4111 of the green split sub-pixel 411 to be the same, even if the three different color split sub-pixels 411 are arranged in parallel, the color uniformity of the light of the pixel unit 400 can be improved, the color distribution of the display panel can be ensured to be more uniform, and the occurrence of stripes and aliasing in the display process can be reduced. The arrangement of the split sub-pixels 411 of one or more colors arranged in the pixel limiting layer 200 is relatively neat, which can reduce the moire interference caused by the mismatch between the arrangement of the sub-pixels 410 and the periodic structure of the display content, and help to maintain the consistency and stability of the color under different viewing angles.

[0054] In some example embodiments, for the same sub-pixel 410, the size of the first side 4111 of any two split sub-pixels 411 is the same, and the size of the second side 4112 is the same.

[0055] As shown in FIG. 4, for a sub-pixel 410 of the display panel, the size of the first side edge 4111 of any two partitioned sub-pixels 411 is the same, and the size of the second side edge 4112 is the same, i.e., all the partitioned sub-pixels 411 of the sub-pixel 410 can be of the same size. In one aspect, during the manufacturing of the display panel, the same size of the partitioned sub-pixels 411 facilitates the control of the preparation process, reduces the possibility of production errors, reduces the difficulty of preparation of the display panel, improves the product yield, and facilitates large-scale batch production. On the other hand, since the sizes of the plurality of partitioned sub-pixels 411 are the same and closely arranged, the pixel fill factor can be improved, the gap between the partitioned sub-pixels 411 can be reduced, and the display panel can have good contrast at different viewing angles.

[0056] In some example embodiments, the light shielding layer 300 is further provided with a first directional opening 311 in communication with the light transmission hole 310, and the opening of the first directional opening 311 is arranged towards the light transmission hole 310, and the opening distance of the first directional opening 311 is greater than or equal to the length of the first side edge 4111 of the partitioned sub-pixel 411.

[0057] As shown in FIGS. 5A-5C, the pixel defining layer 200 can divide the sub-pixel 410 into a plurality of partitioned sub-pixels 411, and the light shielding hole of the light shielding layer 300 can limit the light emission angle of the partitioned sub-pixel 411, improve the light emission intensity of the display panel, and improve the privacy performance thereof. The light shielding layer 300 is further provided with a first directional opening 311 in communication with the light transmission hole 310, and the opening of the first directional opening 311 is arranged towards the light transmission hole 310. The first directional opening 311 can change the limiting effect of the light at the first side edge 4111 of the corresponding partitioned sub-pixel 411, so that part of the light of the partitioned sub-pixel 411 can pass through the first directional opening 311 and be emitted, which is beneficial to realize directional privacy of the display panel.

[0058] In some example embodiments, the first directional opening 311 is symmetrically arranged along the center line of the partitioned sub-pixel 411, and the center line of the partitioned sub-pixel 411 passes through the center point thereof and is perpendicular to the extension direction of the first side edge 4111 of the partitioned sub-pixel 411.

[0059] As shown in FIGS. 5A-5C, the first directional opening 311 arranged on the light shielding layer 300 can change the range of light of the divided sub-pixel 411, limit the light-emitting angle of the divided sub-pixel 411, and be beneficial to realizing directional privacy of the display panel; wherein the first directional opening 311 is symmetrically arranged along the center line of the divided sub-pixel 411, and the center line of the divided sub-pixel 411 passes through the center point and is perpendicular to the extension direction of the first side edge 4111 of the divided sub-pixel 411; when the light generated by the divided sub-pixel 411 passes through the first directional opening 311 and is emitted, the light-emitting angle of the area corresponding to the center line of the divided sub-pixel 411 of the first directional opening 311 is relatively large, and the light-emitting angle of the edge area of the divided sub-pixel 411 is limited by the edge area of the light shielding layer 300 of the first directional opening 311, and the light-emitting angle of the light passing through the first directional opening 311 is relatively small; as shown in FIGS. 5A-5C, taking the divided sub-pixel 411 in the form of a rectangle as an example, the light-emitting angle of the first side center area of the divided sub-pixel 411 is relatively large, and the light-emitting angle of the top corner area is relatively small, which is beneficial to realizing directional privacy of the display panel.

[0060] Further description is made to the first directional opening 311 in combination with the above-mentioned exemplary embodiments. The first directional opening 311 is at least one of an arc shape, a triangular shape, and a trapezoidal shape; in an exemplary embodiment, the first directional opening 311 can be arranged in different shapes on the light shielding layer 300 based on the requirements of the display panel preparation process, so as to meet the directional privacy requirements of the divided sub-pixel 411; wherein, as shown in FIGS. 5A-5C, since the size of the divided sub-pixel 411 is relatively small, by arranging the first directional opening 311 in the form of a triangle, an arc, or a trapezoid, etc., it is easy to open on the surface of the light shielding layer 300, and it is convenient to adjust the light-emitting angle of the divided sub-pixel 411, which can reduce the preparation difficulty of the first directional opening 311, is beneficial to improving the yield of the display panel, and is convenient for mass production of the display panel.

[0061] In some exemplary embodiments, the light shielding layer 300 is arranged with a plurality of second directional openings 312 spaced apart from each other and in communication with the light transmission hole 310; the openings of the plurality of second directional openings 312 are all arranged towards the light transmission hole 310, and the opening distance of any second directional opening 312 along the extension direction of the first side edge 4111 of the divided sub-pixel 411 is less than or equal to one half of the length of the first side edge 4111 of the divided sub-pixel 411.

[0062] As shown in FIGS. 6A-6F, the sub-pixel 410 can be divided into multiple divided sub-pixels 411 by the pixel definition layer 200, and the light shielding holes of the light shielding layer 300 can limit the light emitting angle of the divided sub-pixel 411, improve the light emitting intensity of the display panel, and improve the privacy protection performance thereof; wherein, by arranging multiple second directional openings 312 at intervals in the light shielding layer 300, the multiple second directional openings 312 are arranged along the extension direction of the first side edge 4111 of the divided sub-pixel 411, and the opening distance of the second directional opening 312 is less than or equal to half of the length of the first side edge 4111 of the divided sub-pixel 411, so as to limit and constrain the light emitting angle of the first side edge 4111 of the divided sub-pixel 411; since the adjacent second directional openings 312 are distributed at intervals, a blocking part is formed between the adjacent two second directional openings 312, the light emitting angle of the light rays emitted by the divided sub-pixel 411 through the second top opening is relatively large, and the light emitting angle of the light rays blocked by the blocking part is relatively small; as shown in FIGS. 6A-6F, taking the rectangular divided sub-pixel 411 as an example, the overall light intensity emitted by the first side of the divided sub-pixel 411 is weakened, thereby causing the light intensity of the opposite sides of the display panel to be weakened, and the display effect is also reduced, thereby achieving the corresponding privacy protection purpose.

[0063] In some example embodiments, the multiple second directional openings 312 are uniformly arranged along the extension direction of the first side edge 4111 of the divided sub-pixel 411; as shown in FIGS. 6A-6F, since the second directional opening 312 is provided with at least two, by uniformly distributing the multiple second directional openings 312 along the extension direction of the first side edge 4111, the light rays in the region where the first side edge 4111 is located can be limited, thereby weakening the light emitting intensity of the first side edge 4111 and weakening the display effect of the edge region of the field of view of the display panel, so as to enable the display panel to have corresponding privacy protection effect.

[0064] In combination with the above exemplary embodiments, the first directional opening 311, the second directional opening 312 has at least one of a rectangular shape, a parallelogram shape, a trapezoidal shape, an arc shape, and a triangular shape; in an exemplary embodiment, the first directional opening 311 can be provided with the second directional opening 312 in different shapes on the light shielding layer 300 based on the requirements of the display panel manufacturing process to meet the directional privacy requirements of the segmented sub-pixel 411; as shown in FIGS. 6A to 6F, due to the relatively small size of the segmented sub-pixel 411, by setting the first directional opening 311 to a simple shape such as a rectangle, a parallelogram, a trapezoid, an arc, and a triangle, it is easy to open on the surface of the light shielding layer 300, and it is convenient to adjust the light output angle of the segmented sub-pixel 411, which can reduce the manufacturing difficulty of the first directional opening 311, improve the yield of the display panel, and facilitate large-scale batch production of the display panel; in addition, as shown in FIGS. 6B and 6C, taking the rectangular segmented sub-pixel 411 as an example, when the second directional opening 312 is a parallelogram, the second directional opening 312 is inclined at the edge of the light transmission hole 310, which can limit the light output direction of the left and right sides of the segmented sub-pixel 411, and the light emitted from the segmented sub-pixel through the inclined second directional opening 312, thereby achieving the corresponding privacy effect on the opposite sides of the display panel.

[0065] In some exemplary embodiments, the segmented sub-pixel 411 includes a light-emitting layer 610, and the light-emitting layer 610 is arranged in the opening region of the pixel defining layer 200 and at least partially overlaps the light transmission hole 310 in the substrate 100.

[0066] As shown in FIG. 1, the segmented sub-pixel 411 further includes a light-emitting layer 610, and the light-emitting layer 610 can include multiple colors and be arranged in the opening region (not labeled in the figure) of the pixel defining layer 200, serving as the main light source of the display panel to achieve color display of the display panel; the light-emitting layer 610 can be made of organic materials such as fluorescent materials, phosphorescent materials, thermally activated delayed fluorescent materials, and perovskite materials, and can be formed by vacuum evaporation, solution processing, roll printing, and precise mask alignment process; when the light-emitting layer 610 injects carriers, the carriers recombine to generate photons to provide corresponding light sources for the display panel.

[0067] In some exemplary embodiments, the display panel further includes a plurality of segmented electrode layers 500 arranged between the substrate 100 and the segmented sub-pixel 411 and opposite to the segmented sub-pixel 411, and the segmented electrode layer 500 covers the segmented sub-pixel 411 in the substrate 100.

[0068] As shown in FIG. 1, the display panel provided by the exemplary embodiments of the present disclosure further comprises a plurality of split electrode layers 500, wherein the plurality of split electrode layers 500 are arranged between the substrate 100 and the split sub-pixels 411 and are arranged opposite to the split sub-pixels 411, so that each split electrode layer 500 can independently drive the corresponding split sub-pixel 411 to light up, so as to select different combinations of the number and type of split sub-pixels 411 to display, thereby improving the flexibility of the display panel display; and the orthographic projection of the split electrode layer 500 on the substrate 100 covers the orthographic projection of the split sub-pixel 411 on the substrate 100, so that the light-emitting layer 610 and the split electrode layer 500 can be in sufficient contact, so that the light-emitting layer 610 can generate relatively uniform light, thereby improving the display effect of the display panel.

[0069] In some exemplary embodiments, the display panel further comprises a first insulating layer 620, a first encapsulation layer 630 and a second insulating layer 640 which are sequentially stacked, the first insulating layer 620 is arranged on the side of the pixel defining layer 200 away from the substrate 100, and the orthographic projection of the first insulating layer 620 on the substrate 100 covers the orthographic projection of the pixel unit 400 on the substrate 100.

[0070] As shown in FIG. 1, the display panel provided by the exemplary embodiments of the present disclosure further comprises a first insulating layer 620, a first encapsulation layer 630 and a second insulating layer 640 which are sequentially stacked; wherein the first insulating layer 620 can isolate and protect the pixel unit 400 and serve as an isolation barrier between the pixel defining layer 200 and the subsequent layers, so as to prevent the migration of charges or ions between different functional layers 650, ensure the stability of the electrical performance, and avoid short circuit or leakage; and the first insulating layer 620 can perform smoothing treatment on the surface of the display panel, so that the subsequent film layer structure can be uniformly deposited, thereby ensuring the overall thickness uniformity and optical consistency of the display panel. The first insulating layer 620 can be formed by injecting silicon nitride, silicon oxide or doped aluminum oxide and the like, and can be formed on the surface of the pixel defining layer 200 by PECVD; the first encapsulation layer 630 can be formed by inorganic materials, which can play the role of moisture and oxygen resistance, moisture and oxygen resistance, and charge blocking, effectively protecting the display panel and improving the overall performance and service life of the display panel. The first encapsulation layer 630 can be formed by ALD or sputtering process, such as zirconium oxide, aluminum oxide, silicon nitride or multi-layer composite structure; the second insulating layer 640 can play a further isolation role to enhance the protection effect of the internal structure, especially the protection effect of the circuit above the first encapsulation layer 630. The second insulating layer 640 can be formed by polyimide, silicate glass and the like. In the process, spin coating or spraying and the like can be used, which will not be described here.

[0071] In some example embodiments, the display panel further comprises a color resist layer 660 and a second encapsulation layer 670 stacked on the light shielding layer 300 away from the substrate 100; the color resist layer 660 comprises a plurality of arrayed color resist blocks, and any color resist block of the same color is arranged corresponding to a sub-pixel 411 to filter the light generated by the sub-pixel 411.

[0072] As shown in FIG. 1, the color resist can be formed by a plurality of color resist blocks of different colors, such as green color resist blocks, red color resist blocks, and blue color resist blocks. Since the color resist blocks only allow light of a wavelength corresponding to the color to pass through, the light is separated, the unnecessary color is filtered out, the color purity of the light output by the sub-pixel 410 is improved, and thus the color saturation and brightness of the entire display image are improved. The second encapsulation layer 670 is arranged on the side of the first color resist layer 660 away from the substrate 100 to encapsulate and protect the surface of the color resist layer 660 and improve the overall strength of the display panel. Details are not described herein.

[0073] The example embodiments of the present disclosure also provide a display device comprising the display panel described in any one of the example embodiments. Since the display device can apply the display panel in any one of the example embodiments, the display device has all the advantages and beneficial effects of the display panel described in any one of the example embodiments. The display device can be applied to a display screen in a vehicle, a mobile phone, a tablet computer, a television, a self-service terminal, a movie screen, and other devices with display functions. Details are not described herein.

[0074] In summary, the display panel and the display device provided by the example embodiments of the present disclosure divide the sub-pixel in the pixel unit into a plurality of sub-pixels by the pixel limiting layer, limit and constrain the light output angle of the sub-pixel through the arrayed through holes of the light shielding layer, so that the sub-pixel has good anti-peeping performance, the light output intensity and the light output efficiency of the pixel unit are improved, the display effect of the display panel is optimized, and the overall quality of the display panel is improved.

[0075] The above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than described above and still achieve desirable results. In addition, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve the desired results. In some implementations, multitasking and parallel processing can be advantageous or necessary.

[0076] The various embodiments in the present disclosure are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

[0077] The description of the present disclosure is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present disclosure to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present disclosure and its practical application, and to enable others skilled in the art to understand the present disclosure in order to design various embodiments with various modifications for specific use cases.

[0078] Those of ordinary skill in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest that the scope of the present disclosure (including the claims) is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other variations of the aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity. The same or similar parts between the embodiments can be mutually referred to.

[0079] Although the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those of ordinary skill in the art in light of the foregoing description.

[0080] Embodiments of the present disclosure are intended to cover all such alternatives, modifications and variations as falling within the scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A display panel, comprising: A laminated substrate, a pixel definition layer and a light shielding layer, the pixel definition layer is provided with a plurality of pixel units; The pixel unit includes a plurality of sub-pixels of different colors, at least one of the sub-pixels is divided into a plurality of divided sub-pixels by the pixel definition layer; the light shielding layer is arranged with a plurality of light transmission holes, any one of the light transmission holes is arranged opposite to one of the divided sub-pixels, and the light transmission hole and the divided sub-pixel at least partially overlap in the orthographic projection of the substrate, so as to limit the light emission angle of the divided sub-pixel.

2. The display panel of claim 1, wherein, The divided sub-pixel includes a first side and a second side connected to each other, the length of the first side is greater than the length of the second side, and the light transmission hole is adapted to the divided sub-pixel to limit the light emission angle of the first side peripheral region of the divided sub-pixel.

3. The display panel of claim 2, wherein, For the same pixel unit, the distance between the center points of two adjacent sub-pixels of different colors is the same.

4. The display panel of claim 3, wherein, The extension directions of the first sides of any two divided sub-pixels are the same, and the lengths of the second sides of the divided sub-pixels of different colors are the same along the extension direction of the first side.

5. The display panel of claim 2, wherein, For the same pixel unit, the center points of any two sub-pixels of different colors are located on the same straight line.

6. The display panel of claim 5, wherein, The extension directions of the first sides of any two divided sub-pixels are the same, and the lengths of the first sides are the same.

7. The display panel of claim 2, wherein, For the same pixel unit, at least two divided sub-pixels are green divided sub-pixels, and the extension directions of the first sides of the green divided sub-pixels are the same.

8. The display panel of claim 7, wherein, The divided sub-pixels include red divided sub-pixels and blue divided sub-pixels, the extension direction of the first side of the red divided sub-pixel, the extension direction of the first side of the blue divided sub-pixel, and the extension direction of the first side of the green divided sub-pixel are the same.

9. The display panel of claim 2, wherein, For the same sub-pixel, the lengths of the first sides of any two divided sub-pixels are the same, and the lengths of the second sides of any two divided sub-pixels are the same.

10. The display panel of claim 1, wherein, The light shielding layer is further provided with a first directional opening communicating with the light transmission hole, the opening of the first directional opening is arranged towards the light transmission hole, and the opening distance of the first directional opening is greater than or equal to the length of the first side of the divided sub-pixel.

11. The display panel of claim 10, wherein, The first directional opening is symmetrically arranged along the center line of the divided sub-pixel, wherein the center line of the divided sub-pixel passes through the center point and is perpendicular to the extension direction of the first side of the divided sub-pixel.

12. The display panel of claim 10, wherein, The first directional opening is at least one of arc-shaped, triangular, and trapezoidal.

13. The display panel of claim 8, wherein, The light shielding layer is arranged with a plurality of second directional openings communicating with the light transmission hole, the openings of the plurality of second directional openings are all arranged towards the light transmission hole, and the opening distance of any second directional opening is less than or equal to one half of the length of the first side of the divided sub-pixel along the extension direction of the first side of the divided sub-pixel.

14. The display panel of claim 13, wherein, The plurality of second directional openings are uniformly arranged along the extension direction of the first side of the divided sub-pixel.

15. The display panel of claim 13, wherein, The shape of the second directional opening is at least one of rectangular, parallelogram, trapezoidal, arc-shaped, and triangular.

16. The display panel of claim 1, further comprising, A plurality of division electrode layers are arranged between the substrate and the division sub-pixels and are arranged opposite to the division sub-pixels, and the orthographic projection of the division electrode layers on the substrate covers the orthographic projection of the division sub-pixels on the substrate.

17. A display device comprising the display panel according to any one of claims 1 to 16.

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