Display panel and display device

Abstract

The present application provides a display panel and a display device. In the thickness direction of the display panel, a light-shielding layer is provided to at least cover touch traces, and the light-shielding layer is disposed to avoid first openings of a pixel definition layer, thereby reducing the reflectivity of the display panel; in addition, a polarizing layer covers the light-shielding layer and a light-emitting device layer. By means of the extinction effect of the polarizing layer, the uniformity of the display panel in an "integrated black" mode is improved.

Description

Display panel and display device

[0001] This application claims priority to Chinese patent application No. 202510129759.8, filed on February 5, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0003] Organic light-emitting diode (OLED) displays have become a leader in modern display technology and are highly favored by users due to their numerous advantages such as thinness, active light emission, fast response speed, wide viewing angle, wide color gamut, high brightness, and low power consumption.

[0004] In recent years, with the rapid development of flat panel display technology, users have been increasing their demand for a high-end, technological, and aesthetically pleasing display function. In particular, in smartphones, smartwatches, and other high-end consumer electronics products, the "ultimate all-black" effect has gradually become one of the focuses of attention for customers and users. Invention Overview

[0005] This invention provides a display panel and display device to alleviate the shortcomings of related technologies.

[0006] To achieve the above functions, the technical solutions provided in this application are as follows:

[0007] In a first aspect, embodiments of this application provide a display panel, including:

[0008] Array substrate;

[0009] A pixel definition layer is disposed on one side of the array substrate, and the pixel definition layer has a plurality of first openings;

[0010] A light-emitting device layer is disposed on the side of the pixel definition layer away from the array substrate. The light-emitting device layer includes a plurality of light-emitting units, and one of the light-emitting units is disposed in a first opening.

[0011] A touch layer is disposed on the side of the light-emitting device layer away from the pixel definition layer, and the touch layer includes multiple touch traces that are crisscrossed horizontally and vertically;

[0012] A light-shielding layer is disposed on the side of the touch layer away from the light-emitting device layer. In the thickness direction of the display panel, the light-shielding layer at least covers the touch traces, and the light-shielding layer is disposed away from the first opening.

[0013] A polarizing layer is disposed on the side of the light-shielding layer away from the touch layer, and the polarizing layer covers the light-shielding layer and the light-emitting device layer.

[0014] Secondly, embodiments of this application provide a display device, the display device including a display panel, the display panel including:

[0015] Array substrate;

[0016] A pixel definition layer is disposed on one side of the array substrate, and the pixel definition layer has a plurality of first openings;

[0017] A light-emitting device layer is disposed on the side of the pixel definition layer away from the array substrate. The light-emitting device layer includes a plurality of light-emitting units, and one of the light-emitting units is disposed in a first opening.

[0018] A touch layer is disposed on the side of the light-emitting device layer away from the pixel definition layer, and the touch layer includes multiple touch traces that are crisscrossed horizontally and vertically;

[0019] A light-shielding layer is disposed on the side of the touch layer away from the light-emitting device layer. In the thickness direction of the display panel, the light-shielding layer at least covers the touch traces, and the light-shielding layer is disposed away from the first opening.

[0020] A polarizing layer is disposed on the side of the light-shielding layer away from the touch layer, and the polarizing layer covers the light-shielding layer and the light-emitting device layer. Attached Figure Description

[0021] The technical solution and other beneficial effects of the present invention will become apparent from the following detailed description of specific embodiments of the invention, in conjunction with the accompanying drawings.

[0022] Figure 1 is a schematic diagram of the structure of the display panel 1 provided in an embodiment of this application;

[0023] Figure 2 is a schematic diagram of the first partial cross section corresponding to AA' in Figure 1 provided in an embodiment of this application;

[0024] Figure 3 is a schematic diagram of the second partial cross section corresponding to AA' in Figure 1 provided in an embodiment of this application;

[0025] Figure 4 is a schematic diagram of the third cross section corresponding to AA' in Figure 1 provided in an embodiment of this application;

[0026] Figure 5 is a schematic diagram of the polarizing layer provided in the embodiment of this application;

[0027] Figure 6 is a schematic diagram of the fourth cross section corresponding to AA' in Figure 1 provided in an embodiment of this application;

[0028] Figure 7 is a schematic diagram of the structure of the display device provided in the embodiment of this application. Implementation methods of this application

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working mode of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only, and features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections or connections that allow communication; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The following disclosure provides many different embodiments for implementing different structures of this application. To simplify the disclosure of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] This application provides a display panel and a display device. These will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0034] Please refer to Figures 1 and 2; Figure 1 is a structural schematic diagram of the display panel 1 provided in the embodiment of this application; Figure 2 is a schematic diagram of the first partial cross-section corresponding to AA' in Figure 1 provided in the embodiment of this application.

[0035] This embodiment provides a display panel 1, which includes, but is not limited to, an organic light-emitting diode (OLED) display panel. The display panel 1 includes an array substrate 11, a pixel definition layer 12, a light-emitting device layer 13, an encapsulation layer 14, a touch layer 15, a polarizing layer 16, and a cover plate 17 stacked together.

[0036] The array substrate 11 includes a substrate 111, a buffer layer 112, and a driving circuit layer 113. The driving circuit layer 113 is disposed on the side of the buffer layer 112 away from the substrate 111. The substrate 111 may include a first substrate 1111, a spacer layer 1112, and a second substrate 1113 stacked sequentially. Both the first substrate 1111 and the second substrate 1113 can be rigid substrates or flexible substrates. The materials of the first substrate 1111 and the second substrate 1113 can be materials such as glass, quartz, or polyimide. The material of the spacer layer 1112 includes, but is not limited to, materials with water absorption properties such as silicon nitride and silicon oxide.

[0037] The driving circuit layer 113 is used to drive the light-emitting device layer 13 and provide the required electrical signals to control the switching state and brightness of the light-emitting device, thereby realizing the image display and color adjustment of the display panel 1. The driving circuit layer 113 may include a plurality of thin film transistors 1130. The thin film transistors 1130 may be etch-block type, back trench etch type, or classified into bottom gate thin film transistors, top gate thin film transistors, etc. according to the position of the gate and the active layer. This embodiment does not limit this.

[0038] The driving circuit layer 113 may include a semiconductor layer 1131, a gate insulating layer 1132, a gate 1133, an interlayer insulating layer 1134, a source / drain electrode 1135, a first planarization layer 1136, a bridging layer 1137, and a second planarization layer 1138 stacked on the substrate 111. The first planarization layer 1136 and the second planarization layer 1138 provide a smooth surface, eliminating surface irregularities on the substrate 111 or other layers, ensuring that subsequent layers (such as the pixel definition layer 12, the light-emitting device layer 13, etc.) can be uniformly deposited, thereby improving the display effect and performance of the display panel 1. It is understood that the driving circuit layer 113 is a conventional film layer well-known to those skilled in the art, and its specific structure will not be elaborated here. This embodiment only uses a top-gate thin-film transistor as an example to illustrate the technical solution of this application.

[0039] The pixel definition layer 12 is disposed on the side of the driving circuit layer 113 away from the substrate 111, and the pixel definition layer 12 has a plurality of first openings 121; wherein, the display panel 1 further includes a spacer layer 18, the spacer layer 18 is disposed on the side of the pixel definition layer 12 away from the driving circuit layer 113, and the spacer layer 18 can cover the entire pixel definition layer 12.

[0040] The light-emitting device layer 13 includes a first electrode layer 131, a light-emitting layer 132, and a second electrode layer 133 stacked together. The first electrode layer 131 is disposed between the pixel definition layer 12 and the driving circuit layer 113. The first electrode layer 131 includes a plurality of first electrodes 1311 spaced apart. A first opening 121 is aligned with a first electrode 1311, and the first opening 121 exposes a portion of the upper surface of the first electrode 1311. The light-emitting layer 132 is disposed on the first electrode layer 131. The light-emitting layer 132 includes a plurality of light-emitting units 1320 corresponding one-to-one with the plurality of first electrodes 1311. The light-emitting units 1320 are disposed within the first opening 121 and extend from the first opening 121 to the spacer layer 18. The second electrode layer 133 is disposed on the side of the light-emitting layer 132 away from the first electrode layer 131.

[0041] The first electrode layer 131 can be an anode layer, the first electrode 1311 can be an anode, and the second electrode layer 133 can be a cathode layer. The anode is electrically connected to the thin film transistor 1130. The thin film transistor 1130 controls the current flow to the anode by adjusting the gate signal. The anode provides positive charge to drive the light-emitting unit 1320. The organic material in the light-emitting unit 1320 recombines under the action of the positive charge of the anode and the negative charge of the cathode layer to generate electroluminescence and emit visible light.

[0042] The encapsulation layer 14 is disposed on the side of the light-emitting device layer 13 away from the pixel definition layer 12. The encapsulation layer 14 is used to encapsulate the light-emitting device layer 13 to prevent the first electrode layer 131, the light-emitting layer 132, and the second electrode layer 133 in the light-emitting device layer 13 from coming into contact with water and oxygen in the air, thereby shortening the service life of the display panel 1. The encapsulation layer 14 includes at least a first inorganic encapsulation layer 141, a first organic encapsulation layer 142, and a second inorganic encapsulation layer 143 stacked on the pixel definition layer 12. The materials of the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 include, but are not limited to, silicon nitride, silicon oxide, or silicon oxynitride. The material of the first organic encapsulation layer 142 includes, but is not limited to, polyacrylate.

[0043] The touch layer 15 is disposed on the side of the encapsulation layer 14 away from the light-emitting device layer 13. The touch layer 15 can be a single layer. The touch layer 15 includes multiple touch traces 151 that are crisscrossed. The multiple touch traces 151 are disposed on the light-emitting side of the display panel 1.

[0044] The touch layer 15 can be either a mutual capacitive or a self-capacitive type; wherein, when the touch layer 15 is self-capacitive, multiple touch traces 151 can form multiple touch electrodes and touch leads connected to the touch electrodes, and one touch lead is electrically connected to one touch electrode; it should be noted that the embodiments of this application are only examples described above, but are not limited thereto, and the specific type and structure of the touch layer 15 can be selected according to actual needs.

[0045] The cover plate 17 is disposed on the touch layer 15. The thickness of the cover plate 17 is greater than or equal to 100 micrometers and less than or equal to 150 micrometers. The cover plate 17 may include a passivation film 171 and a glass cover plate 172 (Cover Glass, CG) stacked together. The passivation film 171 covers the touch layer 15, which can increase the leveling of the touch layer 15 and improve its surface smoothness, thereby improving the display effect. The glass cover plate 172 is used to protect the inner components of the display panel 1, provide mechanical strength, and enhance the durability and scratch resistance of the display panel 1.

[0046] The polarizing layer 16 is disposed between the passivation film 171 and the glass cover plate 172, and the polarizing layer 16 can cover the light-emitting device layer 13.

[0047] Please refer to Figures 1 and 2. In one embodiment, the display panel 1 further includes a light-shielding layer 19, which is disposed on the side of the touch layer 15 away from the light-emitting device layer 13. The material of the light-shielding layer 19 may include a light-absorbing material, and this embodiment does not specifically limit the type and refractive index of the light-absorbing material. In the thickness direction of the display panel 1, the light-shielding layer 19 at least covers the touch trace 151, and the light-shielding layer 19 is disposed away from the first opening 121. The orthographic projection of the light-shielding layer 19 on the substrate 111 is located within the orthographic projection of the polarizing layer 16 on the substrate 111.

[0048] It is understandable that the metal layer inside the display panel 1 (such as the touch trace 151) may reflect ambient light entering the panel from the outside, thereby interfering with the normal display effect, especially affecting the uniformity in the "ultimate all-in-one black" mode and reducing the user's visual experience. In this embodiment, a light-shielding layer 19 is provided on the side of the touch layer 15 away from the light-emitting device layer 13, and the light-shielding layer 19 covers at least the touch trace 151 in the thickness direction of the display panel 1. The light-shielding layer 19 is set away from the first opening 121. By using the light-shielding layer 19 to block the touch trace 151, the ambient light will be absorbed by the light-shielding layer 19 before reaching the touch trace 151, preventing it from directly hitting the touch trace 151, reducing the reflection of ambient light by the touch trace 151, and reducing the reflectivity of the display panel 1 in the touch area. At the same time, the light-shielding layer 19 is prevented from affecting the normal display effect of the display panel 1.

[0049] Furthermore, the polarizing layer 16 covers the light-shielding layer 19 and the light-emitting device layer 13. Through the light-extending effect of the polarizing layer 16, the reflectivity and color shift of the display panel 1 at different viewing angles tend to be consistent, thereby improving the uniformity of the display panel 1 in the "ultimate all-in-one black" mode and further optimizing the user's visual experience.

[0050] It should be noted that the extinction effect of the polarizing layer 16 refers to the ability of the polarizing layer 16 to block or eliminate light waves that are inconsistent with its polarization direction, thereby reducing the intensity of reflected light, avoiding unnecessary light from passing through, and thus reducing the reflection of external ambient light or internal light, preventing them from affecting the display effect. In particular, when the display panel 1 displays black, the polarizing layer 16 effectively reduces the light reflected back from the surface of the display panel 1 through its extinction effect, increasing the depth and contrast of black, making the reflectivity and color shift of the screen more consistent at different angles, further improving the display effect in the "ultimate all-in-one black" mode, and enhancing the user's visual experience.

[0051] Please refer to Figures 1 and 2. In one embodiment, the end of the light-emitting unit 1320 on the spacer layer 18 is located within the projection of the light-shielding layer 19 on 111, thereby achieving optical isolation between light-emitting units 1320 of different colors, avoiding color bleeding caused by light leakage or overlap of the light-emitting units 1320, and ensuring the accuracy and stability of the display effect.

[0052] Please refer to Figures 1 and 2. In one embodiment, the light-shielding layer 19 has a plurality of second openings 191, one of the second openings 191 being aligned with one of the first openings 121, and the outer diameter of the second opening 191 being larger than the outer diameter of the first opening 121, thereby preventing the light-shielding layer 19 from affecting the normal display effect of the display panel 1.

[0053] It is understood that by aligning the second opening 191 with the first opening 121, and with the outer diameter of the second opening 191 being larger than the outer diameter of the first opening 121, the coverage area of ​​the light-shielding layer 19 can be matched with the light-emitting area of ​​the display panel 1. This prevents the light-shielding layer 19 from blocking the light-emitting unit 1320, thereby ensuring that the light-shielding layer 19 can absorb ambient light entering the display panel 1, reduce the reflectivity of the display panel 1, and maintain the normal operation of the light-emitting unit 1320, ensuring that the display effect is not affected.

[0054] Please refer to Figures 1 and 2. In one embodiment, the boundary of the orthographic projection surface of the second opening 191 on the pixel definition layer 12 has a first distance from the boundary of the corresponding first opening 121. The first distance is greater than or equal to 3 micrometers and less than or equal to 6 micrometers, thereby precisely controlling the relative position between the second opening 191 of the light-shielding layer 19 and the first opening 121 of the pixel definition layer 12, avoiding interference of the light-shielding layer 19 with the light emission of the light-emitting unit 1320, and effectively blocking ambient light.

[0055] In the display panel 1, it is necessary to ensure that the light-shielding layer 19 can effectively block ambient light entering the display panel 1 without affecting the light emission of the light-emitting unit 1320. If the first spacing is too small, the light emitted by the light-emitting unit 1320 may be partially blocked, thereby affecting the display effect. Conversely, if the first spacing is too large, it may affect the light-shielding effect of the light-shielding layer 19, making it impossible to effectively absorb the ambient light entering the display panel 1, resulting in an increase in the reflectivity of the display panel 1, and thus affecting the uniformity of the black color of the display panel 1.

[0056] It is understood that, by setting the first spacing to be greater than or equal to 3 micrometers, this embodiment ensures that the light-shielding layer 19 and the light-emitting unit 1320 maintain a certain distance, preventing the light-shielding layer 19 from blocking the light-emitting unit 1320, and allowing the light emitted by the light-emitting unit 1320 to pass smoothly through the first opening 121 of the pixel definition layer 12 without being partially blocked or absorbed by the light-shielding layer 19. At the same time, by setting the first spacing to be less than or equal to 6 micrometers, it can be ensured that the light-shielding layer 19 effectively covers the touch trace 151 and does not affect the light output of the light-emitting unit 1320, reducing the problem that the light-shielding layer 19 cannot completely absorb ambient light or reflect light due to the first spacing being too large.

[0057] Please refer to Figures 1 and 2. In one embodiment, the thickness of the light-shielding layer 19 is greater than or equal to 1 micrometer and less than or equal to 2 micrometers. The light-shielding layer 19 includes a light-shielding pattern 190 corresponding to the touch trace 151. Along the length direction of the display panel 1, the width of the light-shielding pattern 190 is greater than the width of the touch trace 151, thereby improving the optical performance of the display panel 1 while ensuring that the light-shielding pattern 190 has a good light-shielding effect. It should be noted that this embodiment takes the length direction of the display panel 1 as the X direction in Figure 2 as an example for illustration. At the same time, the selection of the X direction is only for illustrative purposes and does not limit the actual installation or use direction of the display panel.

[0058] It is understood that this embodiment avoids the light-shielding layer 19 being too thin or too narrow, which would prevent it from being able to fully block the intrusion of external light, by reasonably controlling the thickness and width of the light-shielding layer 19; at the same time, it also avoids the light-shielding layer 19 being too thick or too wide, which would have a negative impact on the interlayer distance and structural stability of the display panel 1, and thus affect the display performance of the display panel 1.

[0059] Please refer to Figures 1 and 3; wherein, Figure 3 is a schematic diagram of the second partial cross-section corresponding to AA' in Figure 1 provided in the embodiment of this application.

[0060] In one embodiment, the plurality of light-emitting units 1320 include a first light-emitting unit 1321 and a second light-emitting unit 1322 with different light-emitting colors. The plurality of first openings 121 include a first sub-opening 1211 and a second sub-opening 1212 spaced apart. The first light-emitting unit 1321 is disposed within the first sub-opening 1211, and the bottom surface of the first sub-opening 1211 has a first diameter L1. The second light-emitting unit 1322 is disposed within the second sub-opening 1212, and the bottom surface of the second sub-opening 1212 has a second diameter L2. The outer circle of the second opening 191 corresponding to the first light-emitting unit 1321 has a third diameter L3, and the outer circle of the second opening 191 corresponding to the second light-emitting unit 1322 has a fourth diameter L4. The difference between the third diameter L3 and the first diameter L1 is equal to the difference between the fourth diameter L4 and the second diameter L2, thereby improving the overall display performance of the display panel 1.

[0061] The plurality of light-emitting units 1320 include a first light-emitting unit 1321, a second light-emitting unit 1322 and a third light-emitting unit 1320 that emit different colors. The first light-emitting unit 1321 can be a red light-emitting unit, the second light-emitting unit 1322 can be a green light-emitting unit, and the third light-emitting unit 1320 can be a blue light-emitting unit.

[0062] The pixel definition layer 12 includes a first sub-opening 1211, a second sub-opening 1212, and a third sub-opening 1213. The first light-emitting unit 1321 is disposed in the first sub-opening 1211, and the bottom surface of the first sub-opening 1211 has a first diameter L1. The second light-emitting unit 1322 is disposed in the second sub-opening 1212, and the bottom surface of the second sub-opening 1212 has a second diameter L2. The third light-emitting unit 1320 is disposed in the third sub-opening 1213, and the bottom surface of the third sub-opening 1213 has a fifth diameter L5.

[0063] The outer circle of the second opening 191 corresponding to the first light-emitting unit 1321 has a third diameter L3, the outer circle of the second opening 191 corresponding to the second light-emitting unit 1322 has a fourth diameter L4, and the outer circle of the third opening corresponding to the third light-emitting unit 1320 has a sixth diameter L6.

[0064] The differences between the sixth diameter L6 and the fifth diameter L5, the differences between the third diameter L3 and the first diameter L1, and the differences between the fourth diameter L4 and the second diameter L2 are all equal, thereby ensuring that the light-shielding layer 19 can effectively block stray light around the light-emitting units 1320 of different colors, improve the light-shielding effect, and reduce the interference of light reflection on the display performance of the display panel 1.

[0065] It should be noted that the bottom surface of the first sub-opening, the bottom surface of the second sub-opening, and the bottom surface of the third sub-opening all refer to the surface of the opening near the light-emitting unit; wherein, these bottom surfaces are directly adjacent to the light-emitting unit and are used to define the setting area of ​​the light-emitting unit, thereby ensuring that the light-emitting unit can be accurately installed in the corresponding opening, realizing effective control of the light-emitting area of ​​the display panel and improving the luminous efficiency.

[0066] It is understood that by setting the differences between the sixth diameter L6 and the fifth diameter L5, the differences between the third diameter L3 and the first diameter L1, and the differences between the fourth diameter L4 and the second diameter L2 to be equal, the second opening 191 and the light-emitting units 1320 of different colors have the same spacing. The same spacing helps to avoid the problem of inconsistent optical performance caused by the uneven spacing between the light-emitting units 1320 of different colors and the light-shielding layer 19, and further improves the uniformity of the overall optical performance of the display panel 1.

[0067] Please refer to Figures 1 and 4; Figure 4 is a schematic diagram of the third cross-section corresponding to AA' in Figure 1 provided in the embodiment of this application.

[0068] In one embodiment, the plurality of light-emitting units 1320 include a first light-emitting unit 1321 and a second light-emitting unit 1322 with different light-emitting colors, and the plurality of first openings 121 include a first sub-opening 1211 and a second sub-opening 1212. The first light-emitting unit 1321 is disposed within the first sub-opening 1211, and the bottom surface of the first sub-opening 1211 has a first diameter L1. The second light-emitting unit 1322 is disposed within the second sub-opening 1212, and the bottom surface of the second sub-opening 1212 has a second diameter L2. The outer circle of the second opening 191 corresponding to the first light-emitting unit 1321 has a third diameter L3, and the outer circle of the second opening 191 corresponding to the second light-emitting unit 1322 has a fourth diameter L4. The difference between the fourth diameter L4 and the second diameter L2 is greater than the difference between the third diameter L3 and the first diameter L1, thereby improving the visual effect of the display panel 1.

[0069] The plurality of light-emitting units 1320 include a first light-emitting unit 1321, a second light-emitting unit 1322 and a third light-emitting unit 1320 that emit different colors. The first light-emitting unit 1321 can be a red light-emitting unit, the second light-emitting unit 1322 can be a green light-emitting unit, and the third light-emitting unit 1320 can be a blue light-emitting unit.

[0070] The pixel definition layer 12 includes a first sub-opening 1211, a second sub-opening 1212, and a third sub-opening 1213. The first light-emitting unit 1321 is disposed in the first sub-opening 1211, and the bottom surface of the first sub-opening 1211 has a first diameter L1. The second light-emitting unit 1322 is disposed in the second sub-opening 1212, and the bottom surface of the second sub-opening 1212 has a second diameter L2. The third light-emitting unit 1320 is disposed in the third sub-opening 1213, and the bottom surface of the third sub-opening 1213 has a fifth diameter L5.

[0071] The outer circle of the second opening 191 corresponding to the first light-emitting unit 1321 has a third diameter L3, the outer circle of the second opening 191 corresponding to the second light-emitting unit 1322 has a fourth diameter L4, and the outer circle of the third opening corresponding to the third light-emitting unit 1320 has a sixth diameter L6.

[0072] The difference between the fourth diameter L4 and the second diameter L2 is greater than the difference between the third diameter L3 and the first diameter L1, and the difference between the fourth diameter L4 and the second diameter L2 is greater than the difference between the sixth diameter L6 and the fifth diameter L5, thereby ensuring that the second opening 191 corresponding to the second light-emitting unit 1322 (green light-emitting unit) has a relatively large circumscribed circle size.

[0073] It is understandable that green light-emitting units are generally more sensitive to the human eye. By increasing the opening size of the corresponding light-shielding layer 19, the luminous efficiency of the green light-emitting unit can be effectively improved, making the overall display effect more uniform. At the same time, since light-emitting units 1320 of different colors have different optical characteristics (such as brightness and color gamut response), appropriately adjusting the size of the second opening 191 of the light-shielding layer 19 can balance the luminous intensity of the light-emitting unit 1320 and improve color performance.

[0074] Furthermore, the difference between the sixth diameter L6 and the fifth diameter L5 is greater than the difference between the third diameter L3 and the first diameter L1. It can be understood that, since the optical efficiency of the blue light-emitting unit is low, by increasing the size of the second opening 191 of the light-shielding layer 19 corresponding to the third light-emitting unit 1320 (blue light-emitting unit) (the sixth diameter L6 is larger), its low brightness and luminous efficiency can be compensated, thereby improving the luminous effect of the blue light-emitting unit.

[0075] Please refer to Figures 1, 3, and 5; Figure 5 is a schematic diagram of the structure of the polarizing layer provided in the embodiment of this application.

[0076] In one embodiment, the polarizing layer 16 includes a phase layer 161, a compensation layer 162, and a linear polarizing layer 163. The phase layer 161 is disposed on the side of the passivation film 171 away from the light-shielding layer 19, the compensation layer 162 is disposed on the side of the phase layer 161 away from the passivation film 171, and the linear polarizing layer 163 is located on the side of the compensation layer 162 away from the phase layer 161. Through the synergistic effect of the phase layer 161, the compensation layer 162, and the linear polarizing layer 163, the polarizing layer 16 achieves an extinction effect, reduces the light reflected from the surface of the display panel 1, increases the depth and contrast of black, and makes the reflectivity and color shift of the screen more consistent at different angles, further improving the display effect in the "ultimate all-in-one black" mode.

[0077] The polarizing layer 16 is disposed in the light emission direction of the display panel 1. The polarizing layer 16 includes a phase layer 161, a first adhesive layer 164, a compensation layer 162, a second adhesive layer 165, and a linear polarizing layer 163 stacked on the passivation film 171. The phase layer 161 includes, but is not limited to, a quarter-wave plate; the compensation layer 162 includes, but is not limited to, a half-wave plate; the first adhesive layer 164 includes, but is not limited to, one of optical adhesive or UV adhesive; and the second adhesive layer 165 includes, but is not limited to, one of optical adhesive or UV adhesive.

[0078] The linear polarization layer 163 is used to filter polarized light in a specific direction in the light wave, so that the incident light presents a linear polarization state after polarization, thereby effectively reducing the interference of stray light; the quarter-wave plate can realize the conversion of polarization state, for example, converting linearly polarized light into circularly polarized light; the compensation layer 162 is used to further reduce the optical phase difference caused by the change of viewing angle and optimize the optical consistency of the display panel 1 under large viewing angle conditions; at the same time, the compensation layer 162 can also reduce color shift and brightness unevenness, and enhance the stability of the displayed image.

[0079] It should be noted that the incident light from the outside is natural light, which has no fixed polarization state. After the natural light passes through the linear polarization layer, only light waves with the same transmission axis as the linear polarization layer 163 are allowed to pass through. Vibration components in other directions are absorbed, thus converting the natural light into linearly polarized light. After the linearly polarized light enters the quarter-wave plate, due to the different refractive indices of the quarter-wave plate in the two orthogonal directions (birefringence), the two components of the light wave produce a 90-degree phase difference, thus converting the linearly polarized light into circularly polarized light (left-handed or right-handed circularly polarized light). The direction of rotation depends on the phase relationship between the light wave components. When the circularly polarized light is reflected by the surfaces of the various film layers in the display panel 1, its direction of rotation will be reversed (left-handed circularly polarized light is reflected as right-handed circularly polarized light, or right-handed circularly polarized light is reflected as left-handed circularly polarized light).

[0080] As mentioned above, when the reflected light passes through the quarter-wave plate again, the introduction of the phase difference will convert the reflected circularly polarized light back into linearly polarized light. At this time, the vibration direction of the linearly polarized light changes and becomes perpendicular to the transmission axis of the original linearly polarized layer 163. Since the vibration direction of the reflected linearly polarized light is perpendicular to the transmission axis of the linearly polarized layer 163, the light wave cannot pass through the linearly polarized layer 163 and is thus blocked, thereby achieving an effective extinction effect, so that the reflected light is not visible on the surface of the display panel 1.

[0081] Meanwhile, by setting a compensation layer 162 between the phase layer 161 and the linear polarization layer 163, the compensation layer 162 is a half-wave plate. When the reflected light passes through the quarter-wave plate, the linearly polarized light formed is not completely perpendicular to the transmission axis of the linear polarization layer 163. The half-wave plate can further optimize its polarization direction to ensure complete perpendicularity and improve the extinction effect.

[0082] It is understood that in this embodiment, the linear polarization layer 163 filters light waves with a specific polarization direction, the phase layer 161 corrects the phase state of the light, and the compensation layer 162 further eliminates viewing angle-related optical errors. The combination of these three can significantly reduce the reflectivity of the display panel 1, thereby achieving the extinction effect of the polarization layer 16.

[0083] Please refer to Figures 1, 3, and 5. In one embodiment, the thickness of the polarizing layer 16 is greater than or equal to one-third of the thickness of the cover plate 17, and less than or equal to one-fifth to two-fifths of the thickness of the cover plate 17. This achieves thinning of the polarizing layer 16, reduces light transmission time, and improves the response speed of the display panel 1. At the same time, by controlling the thickness of the polarizing layer 16, the thickness of the display panel 1 can be reduced while ensuring optical performance, thereby improving user experience and enhancing the market competitiveness of the product.

[0084] The thickness of the polarizing layer 16 is greater than or equal to 30 micrometers and less than or equal to 50 micrometers. It is understood that the thickness of a traditional polarizing layer 16 is usually large (greater than 50 micrometers), which will negatively affect the light propagation efficiency and display effect. In this embodiment, by precisely controlling the thickness of the polarizing layer 16, which is greater than or equal to 30 micrometers and less than or equal to 50 micrometers, the light transmittance can be improved, and the light can be effectively regulated, thereby improving the display brightness and image quality. At the same time, the thickness of the polarizing layer 16 also affects its light extinction efficiency. By controlling the thickness of the polarizing layer 16, the polarization conversion and light extinction effect of light can be optimized, achieving more efficient light regulation and light extinction effect, thereby enhancing the contrast and color performance of the display.

[0085] Please refer to Figures 1 and 6; Figure 6 is a schematic diagram of the fourth cross-section corresponding to AA' in Figure 1 provided in the embodiment of this application.

[0086] In one embodiment, the first electrode 1311 includes an exposed portion 13111 and an overlapping portion 13112 disposed around the exposed portion 13111. One exposed portion 13111 corresponds to one light-emitting unit 1320, and the overlapping portion 13112 overlaps with the pixel definition layer 12. The light-shielding layer 19 covers at least a portion of the overlapping portion 13112, that is, the orthographic projection of the light-shielding layer 19 in the direction perpendicular to the substrate 111 covers at least a portion of the orthographic projection of the overlapping portion 13112 in the direction perpendicular to the substrate 111.

[0087] It is understandable that the metal layer inside the display panel 1 (such as the first electrode layer 131) may reflect ambient light entering the panel from the outside, thereby interfering with the normal display effect of the display panel 1 and degrading the user's visual experience. In this embodiment, the light-shielding layer 19 covers at least part of the overlapping portion 13112. By using the light-shielding layer 19 to block the overlapping portion 13112, most of the ambient light reaches the light-shielding layer 19 before entering the first electrode 1311. The light-shielding layer 19 absorbs the ambient light and prevents the ambient light from directly hitting the first electrode 1311, thereby reducing the reflection of ambient light by the first electrode 1311, thereby improving the light emission effect of the display panel 1 and enhancing the user experience.

[0088] Please refer to Figure 7, which is a schematic diagram of the structure of the display device provided in the embodiment of this application.

[0089] This embodiment also provides a display device 2, which includes the display panel 1 described in any of the above embodiments; it is understood that the display panel 1 has been described in detail in the above embodiments, and will not be described again here.

[0090] The display device may further include a middle frame 21, which is integrated with the display panel 1 to provide support, fixation and protection for the display panel 1.

[0091] In specific applications, the display device 2 can be at least one of the following devices with display functions: smartphone, tablet computer, mobile phone, video phone, e-book reader, desktop computer, laptop computer, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical device, camera, game console, digital camera, car navigation system, electronic billboard, ATM or wearable device.

[0092] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0093] The technical solutions provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions in the embodiments of this application.

Claims

1. A display panel, wherein, include: Array substrate; A pixel definition layer is disposed on one side of the array substrate, and the pixel definition layer has a plurality of first openings; A light-emitting device layer is disposed on the side of the pixel definition layer away from the array substrate. The light-emitting device layer includes a plurality of light-emitting units, and one of the light-emitting units is disposed in a first opening. A touch layer is disposed on the side of the light-emitting device layer away from the pixel definition layer, and the touch layer includes multiple touch traces that are crisscrossed horizontally and vertically; A light-shielding layer is disposed on the side of the touch layer away from the light-emitting device layer. In the thickness direction of the display panel, the light-shielding layer at least covers the touch traces, and the light-shielding layer is disposed away from the first opening. A polarizing layer is disposed on the side of the light-shielding layer away from the touch layer, and the polarizing layer covers the light-shielding layer and the light-emitting device layer.

2. The display panel according to claim 1, wherein, The light-shielding layer has multiple second openings, one of which is aligned with one of the first openings, and the outer diameter of the second opening is larger than the outer diameter of the first opening.

3. The display panel according to claim 2, wherein, The boundary of the orthographic projection surface of the second opening on the pixel definition layer has a first distance from the boundary of the corresponding first opening, the first distance being greater than or equal to 3 micrometers and less than or equal to 6 micrometers.

4. The display panel according to claim 3, wherein, The plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit with different light-emitting colors, and the plurality of first openings include a first sub-opening and a second sub-opening. The first light-emitting unit is disposed in the first sub-opening, the bottom surface of the first sub-opening has a first diameter, and the second light-emitting unit is disposed in the second sub-opening, the bottom surface of the second sub-opening has a second diameter. The outer circle of the second opening corresponding to the first light-emitting unit has a third diameter, and the outer circle of the second opening corresponding to the second light-emitting unit has a fourth diameter; Wherein, the difference between the third diameter and the first diameter is equal to the difference between the fourth diameter and the second diameter; or, the difference between the fourth diameter and the second diameter is greater than the difference between the third diameter and the first diameter.

5. The display panel according to claim 4, wherein, The first light-emitting unit is either a red light-emitting unit or a blue light-emitting unit, and the second light-emitting unit is a green light-emitting unit.

6. The display panel according to any one of claims 1 to 5, wherein, The light-shielding layer includes a light-shielding pattern corresponding to the touch trace, and the width of the light-shielding pattern is greater than the width of the touch trace along the length of the display panel.

7. The display panel according to claim 6, wherein, The thickness of the light-shielding layer is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

8. The display panel according to any one of claims 1 to 5, wherein, The polarizing layer includes a linear polarizing layer, a phase layer, and a compensation layer. The linear polarizing layer is located on the side of the compensation layer away from the light-shielding layer, and the phase layer is located on the side of the compensation layer closer to the light-shielding layer.

9. The display panel according to claim 8, wherein, The phase layer includes a quarter-wave plate, and the compensation layer includes a half-wave plate.

10. The display panel according to claim 8, wherein, The display panel also includes a cover plate, which is disposed on the side of the polarizing layer away from the light-shielding layer; The thickness of the polarizing layer is greater than or equal to one-third of the thickness of the cover plate, and less than or equal to two-fifths of the thickness of the cover plate.

11. The display panel according to claim 10, wherein, The thickness of the polarizing layer is greater than or equal to 30 micrometers and less than or equal to 50 micrometers.

12. The display panel according to any one of claims 1 to 6, wherein, The display panel also includes: A first electrode layer is disposed between the substrate and the pixel definition layer. The first electrode layer includes a plurality of first electrodes spaced apart. Each first electrode includes an exposed portion and an overlapping portion disposed around the exposed portion. The overlapping portion overlaps with the pixel definition layer. The exposed portion is disposed corresponding to the first opening. The light-shielding layer covers at least a portion of the overlapping portion.

13. A display device, wherein, The display device includes a display panel, the display panel comprising: Array substrate; A pixel definition layer is disposed on one side of the array substrate, and the pixel definition layer has a plurality of first openings; A light-emitting device layer is disposed on the side of the pixel definition layer away from the array substrate. The light-emitting device layer includes a plurality of light-emitting units, and one of the light-emitting units is disposed in a first opening. A touch layer is disposed on the side of the light-emitting device layer away from the pixel definition layer, and the touch layer includes multiple touch traces that are crisscrossed horizontally and vertically; A light-shielding layer is disposed on the side of the touch layer away from the light-emitting device layer. In the thickness direction of the display panel, the light-shielding layer at least covers the touch traces, and the light-shielding layer is disposed away from the first opening. A polarizing layer is disposed on the side of the light-shielding layer away from the touch layer, and the polarizing layer covers the light-shielding layer and the light-emitting device layer.

14. The display device according to claim 13, wherein, The light-shielding layer has multiple second openings, one of which is aligned with one of the first openings, and the outer diameter of the second opening is larger than the outer diameter of the first opening.

15. The display device according to claim 14, wherein, The boundary of the orthographic projection surface of the second opening on the pixel definition layer has a first distance from the boundary of the corresponding first opening, the first distance being greater than or equal to 3 micrometers and less than or equal to 6 micrometers.

16. The display device according to claim 15, wherein, The plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit with different light-emitting colors, and the plurality of first openings include a first sub-opening and a second sub-opening. The first light-emitting unit is disposed in the first sub-opening, the bottom surface of the first sub-opening has a first diameter, and the second light-emitting unit is disposed in the second sub-opening, the bottom surface of the second sub-opening has a second diameter. The outer circle of the second opening corresponding to the first light-emitting unit has a third diameter, and the outer circle of the second opening corresponding to the second light-emitting unit has a fourth diameter; Wherein, the difference between the third diameter and the first diameter is equal to the difference between the fourth diameter and the second diameter; or, the difference between the fourth diameter and the second diameter is greater than the difference between the third diameter and the first diameter.

17. The display device according to claim 16, wherein, The first light-emitting unit is either a red light-emitting unit or a blue light-emitting unit, and the second light-emitting unit is a green light-emitting unit.

18. The display device according to any one of claims 13 to 17, wherein, The light-shielding layer includes a light-shielding pattern corresponding to the touch trace, and the width of the light-shielding pattern is greater than the width of the touch trace along the length of the display panel.

19. The display device according to claim 18, wherein, The thickness of the light-shielding layer is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

20. The display device according to any one of claims 13 to 17, wherein, The polarizing layer includes a linear polarizing layer, a phase layer, and a compensation layer. The linear polarizing layer is located on the side of the compensation layer away from the light-shielding layer, and the phase layer is located on the side of the compensation layer closer to the light-shielding layer.

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