Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a plurality of pixel unit groups and a light shielding structure. One pixel unit group comprises a plurality of sub-pixel groups. At least one sub-pixel group in one sub-pixel unit group comprises one anti-peep sub-pixel and at least one non-anti-peep sub-pixel. The second orthographic projection of the non-anti-peep sub-pixel is arranged around the first orthographic projection of the anti-peep sub-pixel. The light shielding structure is located on the side of the pixel unit group away from the substrate. The light shielding structure has a third orthographic projection on the substrate. At least part of the third orthographic projection is located on the side of the first orthographic projection. At least part of the third orthographic projection is located between the first orthographic projection and the second orthographic projection. The phenomenon of large-viewing-angle color deviation caused by the light shielding structure can be improved. The light shielding structure comprises a first light shielding part and a second light shielding part. The orthographic projection of the second light shielding part on the substrate at least partially overlaps the orthographic projection of the first light shielding part on the substrate. The anti-peep effect of the anti-peep sub-pixel is improved.

Description

Technical Field

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

[0002] Compared to traditional liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays offer advantages such as faster response times, higher contrast ratios, wider color gamuts, and greater thinness and flexibility. These characteristics make them promising for applications in flexible wearable devices, such as smartwatches, virtual reality (VR) devices, mobile phones, and laptops. As OLED technology continues to develop and mature, its market share in the display market is steadily increasing, especially in the mobile phone display panel market.

[0003] In the digital age, mobile phones carry a wealth of personal privacy: chat logs, financial information, private photos, etc., and their security features are becoming an "invisible defense" against privacy threats. As the importance of secure information continues to rise, anti-spy technology has become a key tool for protecting the privacy of individuals and businesses.

[0004] Current privacy protection solutions generally suffer from severe bias in the viewer's field of view when not using privacy films. Therefore, how to improve this bias is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a display panel and a display device to improve the large viewing angle distortion phenomenon while achieving both privacy protection and privacy protection functions.

[0006] This application provides a display panel, comprising: a substrate; a plurality of pixel unit groups located on one side of the substrate, each pixel unit group comprising a plurality of sub-pixel groups, at least one of the sub-pixel groups comprising a privacy sub-pixel and at least one non-privacy sub-pixel, the privacy sub-pixel having a first orthographic projection on the substrate, the non-privacy sub-pixel having a second orthographic projection on the substrate, the second orthographic projection being disposed around the first orthographic projection; a light-shielding structure located on the side of the pixel unit groups away from the substrate, the light-shielding structure having a third orthographic projection on the substrate, at least a portion of the third orthographic projection being located around the first orthographic projection, and at least a portion of the third orthographic projection being located between the first orthographic projection and the second orthographic projection; wherein the light-shielding structure comprises a first light-shielding portion and a second light-shielding portion, the second light-shielding portion being located on the side of the first light-shielding portion away from the substrate, and the orthographic projection of the second light-shielding portion on the substrate at least partially overlapping the orthographic projection of the first light-shielding portion on the substrate.

[0007] In some embodiments, the second orthographic projection is spaced apart from the first orthographic projection, and the distance from the inner edge of the second orthographic projection to the outer edge of the first orthographic projection is uniform.

[0008] In some embodiments, the shape of the first orthographic projection is a circle, and the shape of the second orthographic projection is a continuous ring.

[0009] In some embodiments, the orthographic projection of the first light-shielding portion on the substrate includes a first inner edge near the side of the first orthographic projection, and the orthographic projection of the second light-shielding portion on the substrate includes a second inner edge near the side of the first orthographic projection; the orthographic projection of the second light-shielding portion on the substrate partially overlaps with the first orthographic projection, or the second inner edge is connected to the edge of the first orthographic projection.

[0010] In some embodiments, within one of the sub-pixel groups, the area of ​​the privacy sub-pixel is larger than the area of ​​the non-privacy sub-pixel.

[0011] In some embodiments, the orthographic projection of the first light-shielding portion on the substrate includes a first outer edge away from the first orthographic projection, and the orthographic projection of the second light-shielding portion on the substrate includes a second outer edge away from the first orthographic projection; the second orthographic projection is disposed around the first outer edge and the second outer edge, and there is a third distance between the first outer edge and the inner edge of the second orthographic projection, the third distance being greater than or equal to 0; there is a fourth distance between the second outer edge and the edge of the second orthographic projection, the fourth distance being greater than or equal to the third distance.

[0012] In some embodiments, the light-shielding structure further includes: a third light-shielding portion located on the side of the second light-shielding portion away from the substrate, wherein the orthographic projection of the third light-shielding portion on the substrate at least partially overlaps with the orthographic projection of the second light-shielding portion on the substrate, and the orthographic projection of the third light-shielding portion on the substrate at least partially overlaps with the orthographic projection of the first light-shielding portion on the substrate.

[0013] In some embodiments, the system further includes: an encapsulation layer located between the pixel unit group and the light-shielding structure; a pixel definition layer located between the encapsulation layer and the substrate, the pixel definition layer including a first pixel opening and a second pixel opening disposed around the first pixel opening, the privacy sub-pixel located within the first pixel opening, and the non-privacy sub-pixel located within the second pixel opening; and an anode layer located between the substrate and the pixel definition layer, the anode layer including a first anode and a second anode disconnected from each other, the first pixel opening exposing the first anode, and the second pixel opening exposing the second anode.

[0014] In some embodiments, the pixel definition layer further includes a pixel barrier located between the first pixel opening and the second pixel opening; the width of the second light-shielding portion in the direction parallel to the substrate surface is smaller than the width of the first light-shielding portion in the direction parallel to the substrate surface, and the height of the second light-shielding portion is greater than the height of the first light-shielding portion.

[0015] This application also provides a display device, including the display panel in any of the above embodiments.

[0016] In the display panel of this application embodiment, at least one sub-pixel group in a sub-pixel unit group includes a privacy-protecting sub-pixel and at least one non-privacy-protecting sub-pixel. The non-privacy-protecting sub-pixel is arranged around the privacy-protecting sub-pixel. In the top-view direction, the light-shielding structure is located on the periphery of the privacy-protecting sub-pixel and between the privacy-protecting sub-pixel and the non-privacy-protecting sub-pixel. This allows the light-shielding structure to block the large-angle light emission of the privacy-protecting sub-pixel without affecting the large-angle light emission of the non-privacy-protecting sub-pixel. Therefore, it is possible to switch between small-angle light emission and large-angle light emission modes, i.e., to realize both privacy-protecting and non-privacy-protecting functions. At the same time, since the light-shielding structure is not located on the periphery of the non-privacy-protecting sub-pixel, it can improve the large-angle color shift phenomenon caused by the light-shielding structure. In addition, the light-shielding structure adopts a multi-layer structure including at least partially overlapping first and second light-shielding parts, which can improve the privacy-protecting effect of the privacy-protecting sub-pixel.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0020] Figure 1 This is a top view of the pixel unit group of a display panel provided in one embodiment of this application; Figure 2 This is a top view schematic diagram of the pixel unit group of the display panel provided in some embodiments of this application. Figure 1 ; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 1 ; Figure 4 This is a top view schematic diagram of the pixel unit group of the display panel provided in some embodiments of this application. Figure 2 ; Figure 5 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 2 ; Figure 6 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 3 ; Figure 7 This is a schematic diagram of the structure of a display device provided in some embodiments of this application.

[0021] Explanation of reference numerals in the attached figures: 100. Display panel; 200. Display device; 10. Substrate; 20. Pixel unit group; 21. Subpixel group; 211. Privacy-protected subpixel; 212. Non-privacy-protected subpixel; 30. Light-shielding structure; 31. First light-shielding part; 311. First inner edge; 312. First outer edge; 32. Second light-shielding part; 321. Second inner edge; 322. Second outer edge; 33. Third light-shielding part; D1. First distance; D2. Second distance; D3. Third distance; D4. Fourth distance; 40. Encapsulation layer; 50. Pixel definition layer; 51. First pixel opening; 52. Second pixel opening; 53. Pixel barrier; 60. Anode layer; 61. First anode; 62. Second anode. Detailed Implementation

[0022] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0023] Please see Figure 1 , Figure 1 This is a top view of the pixel unit group of a display panel provided in one embodiment of this application.

[0024] The pixel unit group 20 includes multiple sub-pixel groups 21, each sub-pixel group 21 including privacy sub-pixels 211 and non-privacy sub-pixels 212, i.e., the two are distributed alternately. The display panel also includes a light-shielding structure 30, which is located on the side of the pixel unit group 20 away from the substrate. The orthographic projection of the light-shielding structure 30 on the substrate is arranged around the orthographic projection of the privacy sub-pixels 211 on the substrate to achieve small-angle light emission from the privacy sub-pixels 211.

[0025] However, due to the small distance between the non-privacy sub-pixel 212 and the privacy sub-pixel 211, the non-privacy sub-pixel 212 is affected by the light-shielding structure 30 around the privacy pixel, which affects the light output at a wide viewing angle. Furthermore, because the distance between the edge of the non-privacy sub-pixel 212 and the light-shielding structure 30 varies in different directions, the color shift may be different when viewed from different wide viewing angles in non-privacy mode, which will affect the user experience.

[0026] Based on this, this application provides a display panel, comprising: a substrate; a plurality of pixel unit groups located on one side of the substrate, each pixel unit group comprising a plurality of sub-pixel groups, at least one sub-pixel group comprising a privacy sub-pixel and at least one non-privacy sub-pixel, the privacy sub-pixel having a first orthographic projection on the substrate, the non-privacy sub-pixel having a second orthographic projection on the substrate, the second orthographic projection being disposed around the first orthographic projection; a light-shielding structure located on the side of the pixel unit groups away from the substrate, the light-shielding structure having a third orthographic projection on the substrate, at least a portion of the third orthographic projection being located around the periphery of the first orthographic projection, and at least a portion of the third orthographic projection being located between the first orthographic projection and the second orthographic projection; wherein, the light-shielding structure comprises a first light-shielding portion and a second light-shielding portion, the second light-shielding portion being located on the side of the first light-shielding portion away from the substrate, and the orthographic projection of the second light-shielding portion on the substrate at least partially overlapping the orthographic projection of the first light-shielding portion on the substrate.

[0027] In the display panel of this application embodiment, at least one sub-pixel group in a sub-pixel unit group includes a privacy-protecting sub-pixel and at least one non-privacy-protecting sub-pixel. The non-privacy-protecting sub-pixel is arranged around the privacy-protecting sub-pixel. In the top-view direction, the light-shielding structure is located on the periphery of the privacy-protecting sub-pixel and between the privacy-protecting sub-pixel and the non-privacy-protecting sub-pixel. This allows the light-shielding structure to block the large-angle light emission of the privacy-protecting sub-pixel without affecting the large-angle light emission of the non-privacy-protecting sub-pixel. Therefore, it is possible to switch between small-angle light emission and large-angle light emission modes, i.e., to realize both privacy-protecting and non-privacy-protecting functions. At the same time, since the light-shielding structure is not located on the periphery of the non-privacy-protecting sub-pixel, it can improve the large-angle color shift phenomenon caused by the light-shielding structure. In addition, the light-shielding structure adopts a multi-layer structure including at least partially overlapping first and second light-shielding parts, which can improve the privacy-protecting effect of the privacy-protecting sub-pixel.

[0028] exist Figure 1 In the embodiments, the light-shielding structure 30 is separately disposed on the periphery of the privacy sub-pixel 211, and a certain distance needs to be maintained between the privacy sub-pixel 211 (or the light-shielding structure 30) and the non-privacy sub-pixel 212, resulting in a reduced aperture ratio. However, in the embodiments of this application, at least a portion of the third orthographic projection is located between the first orthographic projection and the second orthographic projection. By making full use of the projection space between the privacy sub-pixel and the non-privacy sub-pixel to set up the light-shielding structure, the effective light-emitting area of ​​the sub-pixel can be increased, thereby improving the aperture ratio.

[0029] The structure of the display panel provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0030] Please see Figure 2 and Figure 3 , Figure 2 This is a top view schematic diagram of the pixel unit group of the display panel provided in some embodiments of this application. Figure 1 , Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 1 .

[0031] The display panel 100 includes a substrate 10, a plurality of pixel unit groups 20, and a light-shielding structure 30. The plurality of pixel unit groups 20 are located on one side of the substrate 10, and each pixel unit group 20 includes a plurality of sub-pixel groups 21 of different colors. At least one sub-pixel group 21 in a pixel unit group 20 includes a privacy sub-pixel 211 and at least one non-privacy sub-pixel 212. The privacy sub-pixel 211 has a first orthographic projection on the substrate 10, and the non-privacy sub-pixel 212 has a second orthographic projection on the substrate 10, the second orthographic projection being disposed around the first orthographic projection. The light-shielding structure 30 is located on the side of the pixel unit group 20 opposite to the substrate 10, and the light-shielding structure 30 has a third orthographic projection on the substrate 10. At least a portion of the third orthographic projection is located around the periphery of the first orthographic projection, and at least a portion of the third orthographic projection is located between the first orthographic projection and the second orthographic projection. The light-shielding structure 30 includes a first light-shielding part 31 and a second light-shielding part 32. The second light-shielding part 32 is located on the side of the first light-shielding part 31 away from the substrate 10. The orthographic projection of the second light-shielding part 32 on the substrate 10 at least partially overlaps with the orthographic projection of the first light-shielding part 31 on the substrate 10.

[0032] The substrate 10 serves as the basic support carrier for the entire display panel 100. It can be a conventional display substrate in the field, such as a glass substrate or a flexible substrate. Its material can be flexibly selected according to the application scenario of the display panel 100 (rigid or flexible display). The surface of the substrate 10 is flattened to provide a stable and flat mounting base for the subsequent preparation of various functional layers and structural layers, ensuring the structural stability of the entire display panel 100.

[0033] Pixel unit group 20 is located on one side of the substrate 10 and is the core unit for image display in the display panel 100. One pixel unit group 20 includes multiple sub-pixel groups 21 (usually three sub-pixel groups 21 for red, green, and blue, with the addition of white pixels, etc., depending on display requirements). Each sub-pixel group 21 can integrate both privacy protection and non-privacy protection functions. At least one sub-pixel group 21 in a pixel unit group 20 includes a privacy protection sub-pixel 211 and at least one non-privacy protection sub-pixel 212, both integrated within the same sub-pixel group 21, achieving functional integration and spatial reuse. It should be noted that this application does not limit the number of non-privacy protection sub-pixels 212 in a sub-pixel group 21.

[0034] In one embodiment, all sub-pixel groups 21 in a pixel unit group 20 include a privacy sub-pixel 211 and a non-privacy sub-pixel 212 surrounding the privacy sub-pixel 211.

[0035] In another embodiment, one or more sub-pixel groups 21 in a pixel unit group 20 include privacy sub-pixels 211 and non-privacy sub-pixels 212, while the non-privacy sub-pixels 212 in other sub-pixel groups 21 in the pixel unit group 20 are not arranged around the privacy sub-pixels 211. For example, the privacy sub-pixels 211 and non-privacy sub-pixels 212 may be arranged side by side in a horizontal or column direction.

[0036] It should be noted that within the same sub-pixel group 21, the privacy sub-pixel 211 and the non-privacy sub-pixel 212 emit the same color.

[0037] The privacy-protecting sub-pixel 211 has a first orthographic projection on the substrate 10, and the non-privacy-protecting sub-pixel 212 has a second orthographic projection on the substrate 10. The second orthographic projection is arranged around the periphery of the first orthographic projection, forming a "central privacy-protecting, peripheral non-privacy-protecting" surround layout. This layout ensures that the light emission of the privacy-protecting sub-pixel 211 is precisely controlled, while maximizing the utilization of the light-emitting space of the sub-pixel group 21. Each sub-pixel group 21 may include a light-emitting functional layer. The structure of the light-emitting functional layer may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. In a sub-pixel group 21, the light-emitting functional layer of the privacy-protecting sub-pixel 211 and the light-emitting functional layer of the non-privacy-protecting sub-pixel 212 are separated by the pixel barrier 53 of the pixel definition layer 50.

[0038] The light-shielding structure 30 is located on the side of the pixel unit group 20 facing away from the substrate 10, that is, the light-shielding structure 30 covers the light-emitting side of the pixel unit group 20, and is used to block the wide-angle light emission of the privacy sub-pixel 211 to achieve the privacy function. The light-shielding structure 30 has a third orthographic projection on the substrate 10. In order to ensure the privacy effect and not affect the light emission of the non-privacy sub-pixel 212, at least a portion of the third orthographic projection is arranged around the first orthographic projection, and at least a portion of the third orthographic projection is located between the first orthographic projection and the second orthographic projection. That is, the light-shielding structure 30 is mainly distributed in the gap area between the privacy sub-pixel 211 and the non-privacy sub-pixel 212, and does not extend to the periphery of the non-privacy sub-pixel 212, so as to avoid blocking the wide-angle light emission of the non-privacy sub-pixel 212.

[0039] The light-shielding structure 30 employs a layered overlapping design, specifically including a first light-shielding part 31 and a second light-shielding part 32. The second light-shielding part 32 is located on the side of the first light-shielding part 31 facing away from the substrate 10, meaning the first light-shielding part 31 is positioned close to the pixel unit group 20, and the second light-shielding part 32 is superimposed on top of the first light-shielding part 31, forming a layered structure in a direction perpendicular to the substrate 10. Simultaneously, the orthographic projection of the second light-shielding part 32 onto the substrate 10 at least partially overlaps with the orthographic projection of the first light-shielding part 31 onto the substrate 10. This overlapping design enables graded light shielding, improving the privacy protection effect, while avoiding the manufacturing difficulties caused by an excessively thick single light-shielding part, thus balancing structural feasibility and privacy protection performance. Both the first light-shielding part 31 and the second light-shielding part 32 are made of opaque materials, such as black photoresist, and their specific materials can be flexibly selected according to light-shielding requirements and manufacturing processes.

[0040] It should be noted that the dashed lines with arrows in the diagram represent blocked light, while the solid lines with arrows represent light that can be emitted from the display panel 100.

[0041] In some embodiments, the second orthographic projection (the orthographic projection of the non-privacy pixel 212) and the first orthographic projection (the orthographic projection of the privacy pixel 211) are spaced apart, forming a uniform gap between them. This gap serves to set up the pixel barrier 53 of the light-shielding structure 30 and the pixel definition layer 50, preventing light emission crosstalk caused by direct contact between the privacy pixel 211 and the non-privacy pixel 212. Simultaneously, the distance from the inner edge of the second orthographic projection to the outer edge of the first orthographic projection is uniform, meaning the gap width between the privacy pixel 211 and the non-privacy pixel 212 remains consistent in the 360° circumferential direction. This ensures that the optical path of light rays in all directions is the same at a wide viewing angle, avoiding color shift differences caused by uneven gaps.

[0042] In some embodiments, the distance from the inner edge to the outer edge of the second orthographic projection is uniform, ensuring that the light-emitting area and light-emitting intensity of the non-peeping pixel 212 are completely consistent in all directions, further improving display uniformity.

[0043] It should be noted that "uniform distance" here refers to uniformity within a reasonable process error range, not absolute zero error. It conforms to the conventional design standards of display panels 100 in this field, which can both ensure technical effect and take into account process feasibility.

[0044] exist Figure 2 In the embodiment, the distance from the inner edge of the second orthographic projection to the outer edge of the first orthographic projection is uniform, and the distance from the inner edge of the second orthographic projection to the outer edge of the second orthographic projection is uniform.

[0045] For example, the first orthographic projection (the orthographic projection of the privacy pixel 211) is circular in shape. The circular structure has excellent circumferential symmetry, ensuring that the light emitted by the privacy pixel 211 is uniform in all directions. This facilitates precise and uniform blocking of its large-angle light emission by the light-shielding structure 30, avoiding uneven privacy protection due to shape asymmetry. The second orthographic projection (the orthographic projection of the non-privacy pixel 212) is a continuous ring, such as a circular ring. This ring is concentrically positioned with the first orthographic projection, meaning their centers coincide, allowing the non-privacy pixel 212 to form a uniform annular light-emitting area around the privacy pixel 211, further enhancing circumferential symmetry.

[0046] The circular first orthographic projection and the annular second orthographic projection have excellent circumferential symmetry, which enables the light emission of the privacy pixel 211, the light emission of the non-privacy pixel 212, and the blocking effect of the light-blocking structure 30 to be completely uniform in the 360° direction, further optimizing the effect of improving the large view angle deviation.

[0047] In addition, the circular and ring-shaped structure design is in line with the conventional photolithography, vapor deposition and other process technology of the display panel 100. Compared with irregular shapes, it can reduce the difficulty of pattern preparation, reduce process errors, improve product yield, and facilitate the precise matching of subsequent structures such as light-shielding structure 30 and pixel definition layer 50, thereby reducing design and manufacturing costs.

[0048] In some embodiments, the outer edge of the non-peeping sub-pixel 212 can be circular (e.g., Figure 2 (as shown), square, rhombus, polygon, etc.

[0049] Please see Figure 4 , Figure 4 This is a top view schematic diagram of the pixel unit group of the display panel provided in some embodiments of this application. Figure 2 .and Figure 2The difference in the embodiment is that the outer edge of the non-peeping pixel 212 is square.

[0050] The outer edge of the non-peeping sub-pixels 212 is square, which allows adjacent non-peeping sub-pixels 212 to be arranged closely and seamlessly, avoiding the waste of gaps caused by adjacent circular boundaries, and maximizing the utilization of the effective display area of ​​the display panel 100. Combined with the "center-peeping, periphery-non-peeping" layout of the embodiments of this application, the rectangular outer boundary can flexibly adapt to the surrounding design of the sub-pixel group 21, reducing the waste of light-emitting area and further improving the aperture ratio.

[0051] See Figure 3 The orthographic projection of the first light-shielding portion 31 on the substrate 10 includes a first inner edge 311 near the side of the first orthographic projection (the orthographic projection of the privacy pixel 211), which defines the boundary of the first light-shielding portion 31 near the privacy pixel 211. Similarly, the orthographic projection of the second light-shielding portion 32 on the substrate 10 includes a second inner edge 321 near the side of the first orthographic projection, which also defines the boundary of the second light-shielding portion 32 near the privacy pixel 211.

[0052] To improve the accuracy of privacy protection, the second inner edge 321 is connected to the edge of the first orthographic projection, that is, the inner edge of the second light-shielding part 32 is flush with the orthographic projection edge of the privacy sub-pixel 211, which just covers the outer light-emitting area of ​​the privacy sub-pixel 211. This arrangement ensures that the second light-shielding part 32 can be close to the light-emitting area of ​​the privacy sub-pixel 211, blocking the light emitted by the privacy sub-pixel 211 at a large angle.

[0053] Please see Figure 5 , Figure 5 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 2 .and Figure 3 The difference is that the position of the second light-shielding part 32 is different.

[0054] The second light-shielding part 32 is projected onto the substrate 10 and overlaps with the first projection part. That is, the inner edge of the second light-shielding part 32 extends into the projection range of the privacy pixel 211, and accurately blocks the light emitted from the edge of the privacy pixel 211.

[0055] It should be noted that the overlap between the second light-shielding part 32 and the first orthographic projection should be controlled within a reasonable range to avoid excessive overlap that would block the front light output of the privacy sub-pixel 211 and affect the display brightness in privacy mode.

[0056] In some embodiments, a first distance D1 exists between the first inner edge 311 (the edge of the first light-shielding portion 31 near the privacy pixel 211) and the center of the first orthographic projection (the orthographic projection of the privacy pixel 211), which is the radial distance from the inner edge of the first light-shielding portion 31 to the center of the privacy pixel 211. A second distance D2 exists between the second inner edge 321 (the edge of the second light-shielding portion 32 near the privacy pixel 211) and the center of the first orthographic projection, which is the radial distance from the inner edge of the second light-shielding portion 32 to the center of the privacy pixel 211.

[0057] In some embodiments, the first distance D1 is greater than or equal to the second distance D2, meaning that the inner edge of the second light-shielding part 32 can be closer to the center of the privacy pixel 211 than the inner edge of the first light-shielding part 31. This allows the second light-shielding part 32 to be closer to the light-emitting core area of ​​the privacy pixel 211, preferentially blocking the large-angle light emitted by the privacy pixel 211 and filtering out most of the large-angle stray light. The first light-shielding part 31 is offset to the outside of the privacy pixel 211 relative to the second light-shielding part 32, providing secondary blocking for large-angle light that is not completely blocked by the second light-shielding part 32, forming a hierarchical light-shielding structure of "inner layer precise blocking and outer layer auxiliary blocking".

[0058] like Figure 3 As shown, the first distance D1 is equal to the second distance D2, and the inner edges of the first light-blocking part 31 and the second light-blocking part 32 are flush. Together, they block the large-angle light emitted by the privacy sub-pixel 211, making it suitable for scenarios with moderate privacy viewing angle requirements. Figure 5 As shown, when the first distance D1 is greater than the second distance D2, the inner edge of the second light-shielding part 32 is closer to the center, resulting in higher anti-spy accuracy. This is suitable for scenarios with narrow anti-spy viewing angles and can be flexibly adjusted according to actual application needs.

[0059] In some embodiments, the orthographic projection of the first light-shielding portion 31 on the substrate 10 includes a first outer edge 312 away from the first orthographic projection (the orthographic projection of the privacy pixel 211), the first outer edge 312 defining the boundary of the first light-shielding portion 31 away from the privacy pixel 211. The orthographic projection of the second light-shielding portion 32 on the substrate 10 includes a second outer edge 322 away from the first orthographic projection, defining the boundary of the second light-shielding portion 32 away from the privacy pixel 211.

[0060] To prevent the light-shielding structure 30 from obstructing the light-emitting area of ​​the non-peeping pixel 212, the second orthographic projection (the orthographic projection of the non-peeping pixel 212) is positioned around the first outer edge 312 and the second outer edge 322. That is, the light-emitting area of ​​the non-peeping pixel 212 is located outside the outer edges of the two light-shielding portions, ensuring that the light-shielding structure 30 does not intrude into the effective light-emitting area of ​​the non-peeping pixel 212. Simultaneously, a third distance D3 exists between the first outer edge 312 and the inner edge of the second orthographic projection, and this third distance D3 is greater than or equal to 0. Furthermore, a fourth distance D4 exists between the second outer edge 322 and the edge of the second orthographic projection, and this fourth distance D4 is greater than or equal to the third distance D3.

[0061] By limiting the distance between the outer edge of the light-shielding structure 30 and the projection of the non-privacy sub-pixel 212, the excessive intrusion of the light-emitting area of ​​the non-privacy sub-pixel 212 by the light-shielding structure 30 can be effectively avoided, maximizing the retention of the light-emitting area of ​​the non-privacy sub-pixel 212 and improving the aperture ratio and brightness in non-privacy mode. At the same time, setting the fourth distance D4 to be greater than or equal to the third distance D3 can further reduce the impact of the second light-shielding part 32 on the light emission of the non-privacy sub-pixel 212, balancing privacy function and display quality, and avoiding the problem of uneven brightness in the non-privacy display area.

[0062] exist Figure 3 In the embodiment, the third distance D3 is greater than 0, and the fourth distance D4 is equal to the third distance D3. Therefore, the fourth distance D4 is also greater than 0. A small gap is formed between the first outer edge 312 and the second outer edge 322 and the second orthographic projection. This can further avoid the influence of the light-shielding structure 30 on the light emission of the non-peeping pixel 212, and at the same time facilitate the compensation of process errors.

[0063] exist Figure 5 In this embodiment, the third distance is equal to 0, meaning that the outer edge of the first light-shielding part 31 is flush with the inner edge of the non-privacy pixel 212, just enough not to obstruct the non-privacy pixel 212. The fourth distance D4 is greater than the third distance D3, meaning that the outer edge of the second light-shielding part 32 is closer to the privacy pixel 211 than the outer edge of the first light-shielding part 31, further reducing the occupation of the light-emitting area of ​​the non-privacy pixel 212 by the second light-shielding part 32, ensuring that the light-emitting area of ​​the non-privacy pixel 212 is maximized, and improving the display brightness and aperture ratio.

[0064] Please see Figure 6 , Figure 6 yes Figure 2 Schematic diagram of the cross-sectional structure of the neutron pixel at A-A1 Figure 3 .and Figure 5 The difference is that the light-shielding structure 30 also includes a third light-shielding part 33.

[0065] The light-shielding structure 30 also includes a third light-shielding part 33, which is located on the side of the second light-shielding part 32 away from the substrate 10. That is, the third light-shielding part 33 is superimposed on the second light-shielding part 32, and together with the first light-shielding part 31 and the second light-shielding part 32, they form a three-layer layered light-shielding structure 30. The three are superimposed in sequence in the direction perpendicular to the substrate 10 to form a gradient light-shielding system.

[0066] To ensure a tiered light-shielding effect, the orthographic projection of the third light-shielding part 33 on the substrate 10 at least partially overlaps with the orthographic projection of the second light-shielding part 32 on the substrate 10, enabling the third light-shielding part 33 to further block large-angle light that is not completely blocked by the second light-shielding part 32. Simultaneously, the orthographic projection of the third light-shielding part 33 on the substrate 10 at least partially overlaps with the orthographic projection of the first light-shielding part 31 on the substrate 10, ensuring that the three layers of light-shielding parts form a continuous light-shielding area, avoiding blind spots and further enhancing the privacy protection effect.

[0067] By adding a third light-shielding part 33 and overlapping it with the first two light-shielding layers, a three-layer hierarchical light-shielding structure is formed, which further enhances the blocking effect on the privacy sub-pixel 211 at large angles, achieving a narrower privacy viewing angle and improving privacy protection capabilities. Simultaneously, the overlapping arrangement of multiple light-shielding parts allows for a narrower width (the width parallel to the surface of the substrate 10) of each light-shielding part, thereby increasing the aperture ratio. Furthermore, the three-layer light-shielding design also improves light-shielding uniformity, further mitigating the large-viewing-angle color shift phenomenon.

[0068] The display panel 100 may also include an encapsulation layer 40, a pixel definition layer 50, and an anodizing layer 60.

[0069] The encapsulation layer 40 is located on the side of the pixel unit group 20 facing away from the substrate 10, and between the pixel unit group 20 and the light-shielding structure 30. That is, the encapsulation layer 40 covers the light-emitting side of the pixel unit group 20, sealing and protecting it from external moisture, oxygen, and other harmful substances, preventing the pixel unit group 20 (especially the OLED light-emitting unit) from being corroded and damaged, thereby improving the reliability and lifespan of the display panel 100. The encapsulation layer 40 can be an inorganic encapsulation layer 40, an organic encapsulation layer 40, or an inorganic-organic composite encapsulation layer 40; the specific material and thickness can be flexibly selected according to the application scenario of the display panel 100.

[0070] A pixel definition layer 50 is located between the encapsulation layer 40 and the substrate 10, and covers the anode layer 60. It is used to define the light-emitting area of ​​the pixel unit group 20 and avoid light emission crosstalk between adjacent sub-pixel groups 21. The pixel definition layer 50 includes a first pixel opening 51 and a second pixel opening 52 disposed around the first pixel opening 51. The first pixel opening 51 corresponds to the position of the privacy sub-pixel 211, which is located within the first pixel opening 51. The first pixel opening 51 exposes the anode area below, providing a channel for the light emission of the privacy sub-pixel 211. The second pixel opening 52 corresponds to the position of the non-privacy sub-pixel 212, and is disposed around the first pixel opening 51. The non-privacy sub-pixel 212 is located within the second pixel opening 52, also exposing the anode area below, ensuring that the non-privacy sub-pixel 212 emits light normally.

[0071] An anode layer 60 is located between the substrate 10 and the pixel definition layer 50, serving as the bottom electrode of the pixel unit group 20. It is used to deliver holes to the hole injection layer of the light-emitting functional layer, providing energy for pixel emission. The anode layer 60 includes a first anode 61 and a second anode 62 that are disconnected from each other. The first anode 61 corresponds to the privacy pixel 211, and the first pixel opening 51 exposes the first anode 61, allowing the privacy pixel 211 to be electrically connected to the first anode 61. The second anode 62 corresponds to the non-privacy pixel 212, and the second pixel opening 52 exposes the second anode 62, allowing the non-privacy pixel 212 to be electrically connected to the second anode 62. The first anode 61 and the second anode 62 are disconnected from each other, enabling independent driving of the privacy pixel 211 and the non-privacy pixel 212, avoiding charge crosstalk between them. For example, the first anode 61 and the second anode 62 can be connected to different transistors.

[0072] In privacy mode, privacy pixel 211 emits light, while non-privacy pixel 212 does not emit light. In non-privacy mode, only non-privacy pixel 212 may emit light, or both non-privacy pixel 212 and privacy pixel 211 may emit light simultaneously.

[0073] In some embodiments, in one of the sub-pixel groups 21, the area of ​​the privacy sub-pixel 211 is larger than the area of ​​the non-privacy sub-pixel 212. Therefore, when the privacy sub-pixel 211 is turned off in non-privacy mode and does not emit light, the effective light-emitting area of ​​the non-privacy sub-pixel 212 can be increased accordingly, thereby improving the brightness and display effect of the entire display area in non-privacy mode, while ensuring privacy functionality and maintaining image quality in normal display mode. The pixel definition layer 50 may also include a pixel barrier 53 located between the first pixel opening 51 and the second pixel opening 52. This pixel barrier 53 is a raised structure used to further isolate the privacy sub-pixel 211 and the non-privacy sub-pixel 212, avoiding light emission crosstalk and charge crosstalk between them, while providing support for the encapsulation layer 40 and the light-shielding structure 30. In order to suppress ambient light reflection, the orthographic projection of the surface of the pixel barrier 53 facing away from the substrate 10 (i.e., the upper surface of the pixel barrier 53) on the substrate 10 is located within the orthographic projection of the first light-shielding part 31 on the substrate 10. That is, the first light-shielding part 31 completely covers the upper surface of the pixel barrier 53, preventing ambient light from shining on the upper surface and sidewalls of the pixel barrier 53 and causing reflection, thereby improving the contrast of the display panel 100.

[0074] In some embodiments, see Figure 6 The dimensions of the first light-shielding part 31 and the second light-shielding part 32 are designed in a gradient manner. The width W2 of the second light-shielding part 32 in the direction parallel to the surface of the substrate 10 is smaller than the width W1 of the first light-shielding part 31 in the direction parallel to the surface of the substrate 10. That is, the second light-shielding part 32 is narrower and the first light-shielding part 31 is wider, ensuring that the first light-shielding part 31 can completely cover the pixel barrier 53, while the second light-shielding part 32 will not excessively occupy the light-emitting area of ​​the non-spy sub-pixel 212. The height H2 of the second light-shielding part 32 is greater than the height H1 of the first light-shielding part 31. That is, the second light-shielding part 32 is taller and the first light-shielding part 31 is shorter, forming a gradient light-shielding structure 30 of "narrow and tall inside, wide and low outside". The second light-shielding part 32 (narrow and tall) is used to accurately block the large-angle light emission of the spy sub-pixel 211, while the first light-shielding part 31 (wide and low) is used to cover the pixel barrier 53 and assist in light shielding, taking into account both the privacy effect and the aperture ratio.

[0075] In some embodiments, the width W3 of the third light-shielding portion 33 in the direction parallel to the surface of the substrate 10 is smaller than the width W2 of the second light-shielding portion 32 in the direction parallel to the surface of the substrate 10, and the height H3 of the third light-shielding portion 33 is greater than the height H2 of the second light-shielding portion 32. This dimensional design forms a gradient distribution of "W3>W2>W1, H1<H2<H3", which is adapted to the covering relationship with the pixel barrier 53 and the first light-shielding portion 31, not only ensuring the layering sense of three-layer graded light shielding, but also avoiding occupying more light-emitting areas due to the narrow width, and the relatively large height can expand the blocking range of large-angle light rays.

[0076] The embodiments of the present application further provide a display device, and the display device includes the display panel in any one of the above embodiments.

[0077] Please refer to Figure 7 , Figure 7 which is a schematic structural diagram of a display device provided in some embodiments of the present application.

[0078] The display device 200 includes a device main body and a display panel 100, and the display panel 100 may be the display panel 100 in any one of the above embodiments. In addition, the device main body may include a frame, a driving assembly, a power supply, etc., and the display device 200 may be a display terminal such as a mobile phone, a tablet, or a television, which is not limited herein.

[0079] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically and clearly defined.

[0080] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0081] The embodiments, implementations, and related technical features of the present application can be combined and replaced with each other on the premise of no conflict.

[0082] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A display panel (100), characterized in that, include: base(10); Multiple pixel unit groups (20) are located on one side of the substrate (10). Each pixel unit group (20) includes multiple sub-pixel groups (21). At least one sub-pixel group (21) in a pixel unit group (20) includes a non-peeping sub-pixel (212) and at least one peeping sub-pixel (211). The peeping sub-pixel (211) has a first orthographic projection on the substrate (10), and the non-peeping sub-pixel (212) has a second orthographic projection on the substrate (10). The second orthographic projection is arranged around the first orthographic projection. A light-shielding structure (30) is located on the side of the pixel unit group (20) away from the substrate (10). The light-shielding structure (30) has a third orthographic projection on the substrate (10). At least a portion of the third orthographic projection is located around the first orthographic projection, and at least a portion of the third orthographic projection is located between the first orthographic projection and the second orthographic projection. The light-shielding structure (30) includes a first light-shielding part (31) and a second light-shielding part (32). The second light-shielding part (32) is located on the side of the first light-shielding part (31) away from the substrate (10). The orthographic projection of the second light-shielding part (32) on the substrate (10) at least partially overlaps with the orthographic projection of the first light-shielding part (31) on the substrate (10).

2. The display panel (100) according to claim 1, characterized in that, The second orthographic projection is spaced apart from the first orthographic projection, and the distance from the inner edge of the second orthographic projection to the outer edge of the first orthographic projection is uniform.

3. The display panel (100) according to claim 2, characterized in that, The first orthographic projection is circular, and the second orthographic projection is a continuous ring.

4. The display panel (100) according to claim 1, characterized in that, The orthographic projection of the first light-shielding part (31) on the substrate (10) includes a first inner edge (311) near the side of the first orthographic projection, and the orthographic projection of the second light-shielding part (32) on the substrate (10) includes a second inner edge (321) near the side of the first orthographic projection. The second light-shielding portion (32) is projected onto the substrate (10) and overlaps with the first projection portion, or the second inner edge (321) is connected to the edge of the first projection.

5. The display panel (100) according to claim 1, characterized in that, In one of the sub-pixel groups (21), the area of ​​the privacy sub-pixel (211) is larger than the area of ​​the non-privacy sub-pixel (212).

6. The display panel (100) according to claim 1, characterized in that, The orthographic projection of the first light-shielding part (31) on the substrate (10) includes a first outer edge (312) away from the first orthographic projection, and the orthographic projection of the second light-shielding part (32) on the substrate (10) includes a second outer edge (322) away from the first orthographic projection. The second orthographic projection is set around the first outer edge (312) and the second outer edge (322), and there is a third distance (D3) between the first outer edge (312) and the inner edge of the second orthographic projection, the third distance (D3) being greater than or equal to 0; there is a fourth distance (D4) between the second outer edge (322) and the edge of the second orthographic projection, the fourth distance (D4) being greater than or equal to the third distance (D3).

7. The display panel (100) according to claim 1, characterized in that, The light-shielding structure (30) also includes: The third light-shielding part (33) is located on the side of the second light-shielding part (32) away from the substrate (10). The orthographic projection of the third light-shielding part (33) on the substrate (10) at least partially overlaps with the orthographic projection of the second light-shielding part (32) on the substrate (10), and the orthographic projection of the third light-shielding part (33) on the substrate (10) at least partially overlaps with the orthographic projection of the first light-shielding part (31) on the substrate (10).

8. The display panel (100) according to claim 1, characterized in that, Also includes: An encapsulation layer (40) is located between the pixel unit group (20) and the light-shielding structure (30); A pixel definition layer (50) is located between the encapsulation layer (40) and the substrate (10). The pixel definition layer (50) includes a first pixel opening (51) and a second pixel opening (52) disposed around the first pixel opening (51). The privacy sub-pixel (211) is located in the first pixel opening (51), and the non-privacy sub-pixel (212) is located in the second pixel opening (52). An anode layer (60) is located between the substrate (10) and the pixel definition layer (50). The anode layer (60) includes a first anode (61) and a second anode (62) that are disconnected from each other. The first pixel opening (51) exposes the first anode (61), and the second pixel opening (52) exposes the second anode (62).

9. The display panel (100) according to claim 8, characterized in that, The pixel definition layer (50) also includes a pixel barrier (53) located between the first pixel opening (51) and the second pixel opening (52); The width of the second light-shielding part (32) in the direction parallel to the surface of the substrate (10) is smaller than the width of the first light-shielding part (31) in the direction parallel to the surface of the substrate (10), and the height of the second light-shielding part (32) is greater than the height of the first light-shielding part (31).

10. A display device (200), characterized in that, Includes the display panel (100) as described in any one of claims 1 to 9.

Images