Display panel and display device

Abstract

The present invention provides a display panel and a display device. The display panel comprises: a substrate; a pixel defining layer located on one side of the substrate, wherein the pixel defining layer comprises a plurality of pixel opening areas and non-pixel opening areas located between adjacent pixel opening areas, and the plurality of pixel opening areas comprise a plurality of shared pixel opening areas and a plurality of privacy pixel opening areas; a plurality of light-emitting layers which are respectively located in the corresponding shared pixel opening areas and the corresponding privacy pixel opening areas; an encapsulation layer located on the side of the pixel defining layer and the light-emitting layer facing away from the substrate; a light modulation layer located on the side of the encapsulation layer facing away from the substrate, wherein the light modulation layer comprises light-transmitting areas arranged corresponding to the shared pixel opening areas and the privacy pixel opening areas, and light-shielding areas arranged corresponding to the non-pixel opening areas; and at least one light-shielding layer located on the side of the light modulation layer facing away from the substrate, wherein each light-shielding layer comprises shared openings having one-to-one correspondence to the plurality of shared pixel opening areas and privacy openings having one-to-one correspondence to the plurality of privacy pixel opening areas.

Description

A display panel and display device Technical Field

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

[0002] With the continuous development of electronic technology, mobile phones, computers and other electronic devices have gradually become common tools in people's daily lives and work.

[0003] When using electronic devices, users can browse relevant information through the screen. However, due to the wide viewing angle of some electronic devices' display modules, in certain situations, the information a user is browsing may be spied on by others or may disturb others.

[0004] Summary of the Invention

[0005] This disclosure provides a display panel and a display device, the specific solutions of which are as follows:

[0006] This disclosure provides a display panel, comprising:

[0007] Substrate;

[0008] A pixel defining layer is located on one side of the substrate. The pixel defining layer includes a plurality of pixel opening regions and non-pixel opening regions located between adjacent pixel opening regions. The plurality of pixel opening regions include a plurality of shared pixel opening regions and a plurality of privacy pixel opening regions.

[0009] Multiple light-emitting layers are respectively located in the corresponding shared pixel opening area and the corresponding privacy pixel opening area;

[0010] An encapsulation layer is located on the side of the pixel defining layer and the light-emitting layer that faces away from the substrate.

[0011] A light modulation layer is located on the side of the encapsulation layer opposite to the substrate. The light modulation layer includes a light-transmitting area corresponding to the shared pixel opening area and the privacy pixel opening area, and a light-shielding area corresponding to the non-pixel opening area.

[0012] At least one light-shielding layer is located on the side of the light modulation layer away from the substrate. Each light-shielding layer includes a shared opening corresponding to one-to-one with the plurality of shared pixel opening areas and a privacy opening corresponding to one-to-one with the plurality of privacy pixel opening areas.

[0013] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the light modulation layer includes alternately stacked low-refractive-index transparent insulating layers and high-refractive-index transparent insulating layers. The light modulation layers corresponding to the light-transmitting area and the light-shielding area are all the low-refractive-index transparent insulating layers closest to the substrate. The light modulation layers corresponding to the light-transmitting area are all the low-refractive-index transparent insulating layers furthest from the substrate. The light modulation layers corresponding to the light-shielding area are all the high-refractive-index transparent insulating layers furthest from the substrate.

[0014] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the light modulation layer includes a first low-refractive-index transparent insulating layer, a first high-refractive-index transparent insulating layer, a second low-refractive-index transparent insulating layer and a second high-refractive-index transparent insulating layer stacked sequentially, wherein the first low-refractive-index transparent insulating layer is close to the substrate.

[0015] The first low-refractive-index transparent insulating layer, the first high-refractive-index transparent insulating layer, and the second low-refractive-index transparent insulating layer are all planar structures. The second high-refractive-index transparent insulating layer includes a cutout portion that corresponds one-to-one with each of the shared pixel opening area and each of the privacy pixel opening areas.

[0016] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the refractive index of the low-refractive-index transparent insulating layer is 1.4-1.6, and the refractive index of the high-refractive-index transparent insulating layer is 1.7-1.9.

[0017] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the light modulation layer includes: a first metal layer disposed close to the substrate and covering its entire surface; a second metal layer disposed on the side of the first metal layer away from the substrate and covering its entire surface; and a first transparent insulating layer disposed between the first metal layer and the second metal layer and corresponding to each of the shared pixel opening areas and each of the privacy pixel opening areas; the first metal layer and the second metal layer are in direct contact in the non-pixel opening areas.

[0018] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the cross-sectional shape of the first transparent insulating layer along the thickness direction of the substrate includes at least one of a rectangle and an inverted trapezoid.

[0019] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the first transparent insulating layer is a single-layer structure, and the material of the first transparent insulating layer is an inorganic material or an organic material.

[0020] Alternatively, the first transparent insulating layer may be a multilayer structure, wherein each layer of the multilayer structure is made of inorganic material.

[0021] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the first transparent insulating layer includes: a bottom surface disposed near the substrate, a top surface disposed away from the substrate, and two opposing side surfaces connecting the bottom surface and the top surface; wherein each side surface is an arcuate surface protruding away from the substrate, or each side surface is a slope.

[0022] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the distance between the connection point of the arc surface and the top surface and the bottom surface is a first distance, the orthographic projection width of the arc surface on the substrate is a second distance, and the ratio of the first distance to the second distance is greater than or equal to 1.

[0023] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the angle between the inclined surface and the bottom surface is 60-75°.

[0024] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the material of the first transparent insulating layer is an organic material, and the thickness of the first transparent insulating layer is 2-4 μm.

[0025] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the refractive index of the first transparent insulating layer is 1.55-1.7.

[0026] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the edge of the top surface extends 1-3 μm beyond the bottom edge of the pixel opening area.

[0027] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the light modulation layer further includes a second transparent insulating layer located between the first metal layer and the first transparent insulating layer, wherein the cross-section of the second transparent insulating layer along the thickness direction of the substrate is an inverted trapezoid.

[0028] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the material of the second transparent insulating layer is an inorganic material.

[0029] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the first transparent insulating layer includes: a bottom surface disposed near the substrate, and a top surface connected to the bottom surface and protruding away from the substrate; wherein the top surface includes a plurality of arc surfaces distributed in an array.

[0030] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the number of arc surfaces corresponding to each shared pixel opening area and each privacy pixel opening area is ≥3*3 array.

[0031] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the second metal layer is disposed conformally along the first transparent insulating layer in the pixel opening area.

[0032] In one possible implementation, in the display panel provided in the embodiments of this disclosure, the second metal layer has a recess corresponding to the non-pixel opening area, and the light modulation layer further includes a scattering particle layer located within the recess.

[0033] Accordingly, this disclosure also provides a display device, including the display panel described above in this disclosure. Attached Figure Description

[0034] Figure 1 is a schematic diagram of the structure of a display panel provided in an embodiment of this disclosure;

[0035] Figure 2 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0036] Figure 3 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0037] Figure 4 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0038] Figure 5 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0039] Figure 6 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0040] Figure 7 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0041] Figure 8 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0042] Figure 9 shows the structure of an OLED privacy display panel provided in an embodiment of this disclosure;

[0043] Figure 10 shows the L-decay simulation results of the light emission brightness of the display panel shown in Figure 1 decreasing as the viewing angle increases;

[0044] Figure 11 shows an L-decay simulation result of the brightness decay of the light emitted by the display panel shown in Figure 2 as the viewing angle increases;

[0045] Figure 12 shows another L-decay simulation result of the brightness decay of the light emitted by the display panel shown in Figure 2 as the viewing angle increases;

[0046] Figure 13 shows the optical path diagram of light rays emitted from the light-emitting layer at different angles as they pass through the first transparent insulating layer in Figure 4.

[0047] Figure 14 shows the optical path diagram of light rays emitted from the light-emitting layer at different angles as they pass through the first transparent insulating layer in Figure 6.

[0048] Figure 15 shows the optical path diagram of light rays emitted from the light-emitting layer at different angles in Figure 7 as they pass through the first transparent insulating layer and the second transparent insulating layer.

[0049] Figure 16 is a schematic diagram of the structure of another display panel provided in an embodiment of this disclosure;

[0050] Figure 17 is a plan view of a display device provided in an embodiment of this disclosure. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms as used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0053] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0054] Organic light-emitting diode (OLED) display panels have many advantages such as self-illumination, ultra-thinness, fast response speed, high contrast, and wide viewing angle, making them a type of display panel that is currently receiving widespread attention.

[0055] This disclosure provides a display panel, as shown in Figures 1-8, including:

[0056] Substrate 1;

[0057] The pixel defining layer 2 is located on one side of the substrate 1. The pixel defining layer 2 includes multiple pixel opening areas (P1 and P2) and non-pixel opening areas located between adjacent pixel opening areas. The multiple pixel opening areas (P1 and P2) include multiple shared pixel opening areas P1 (corresponding to shared pixels) and multiple privacy pixel opening areas P2 (corresponding to privacy pixels).

[0058] Multiple light-emitting layers 3 are located in the corresponding shared pixel opening area P1 and the corresponding privacy pixel opening area P2, respectively;

[0059] Encapsulation layer 4 is located on the side of pixel defining layer 2 and light emitting layer 3 that is away from substrate 1;

[0060] The light modulation layer 5 is located on the side of the encapsulation layer 4 away from the substrate 1. The light modulation layer 5 includes a light-transmitting area 51 corresponding to the shared pixel opening area P1 and the privacy pixel opening area P2, and a light-shielding area 52 corresponding to the non-pixel opening area. Specifically, the light-transmitting area 51 is used to transmit small-angle light emitted from the pixel opening areas (P1 and P2). The small angle generally means that the angle between the emitted light and the normal perpendicular to the screen is 0-30°. The light-shielding area 52 is used to block large-angle light emitted from the pixel opening areas (P1 and P2). The large angle generally means that the angle between the emitted light and the normal perpendicular to the screen is greater than 30° and less than or equal to 90°.

[0061] At least one light-shielding layer is provided, for example, including a first light-shielding layer 6 and a second light-shielding layer 7. The first light-shielding layer 6 is located on the side of the light modulation layer 5 facing away from the substrate 1, and the second light-shielding layer 7 is located on the side of the first light-shielding layer 6 facing away from the substrate 1. The first light-shielding layer 6 includes a first shared opening 61 corresponding to a plurality of shared pixel opening areas P1 and a first privacy opening 62 corresponding to a plurality of privacy pixel opening areas P2. The width of the first shared opening 61 may be greater than the width of the first privacy opening 62. The second light-shielding layer 7 includes a second shared opening 71 corresponding to a plurality of shared pixel opening areas P1 and a second privacy opening 72 corresponding to a plurality of privacy pixel opening areas P2. The width of the second shared opening 71 may be greater than the width of the second privacy opening 72. Specifically, the first light-shielding layer 6 is used to block large-angle light emitted from the pixel opening areas, and the second light-shielding layer 7 is used to block small-angle light emitted from the pixel opening areas.

[0062] OLED display panels have a promising market prospect in automotive instrument panels, center consoles, and passenger-side displays. Currently, many automakers have raised the development requirements for switchable privacy-prevention in-vehicle products for passenger-side displays. These products need to include switchable "sharing mode" and "privacy-prevention mode." For example, when parked, the passenger-side display can be switched to "sharing mode" to block light vertically without affecting the driver's view; while driving, the passenger-side display can be switched to "privacy-prevention mode." This privacy-prevention mode has stricter privacy specifications, such as a small cutoff angle on the left side in the horizontal direction (H-direction). The cutoff angle is the angle corresponding to the side brightness decaying to 1% of the front light output brightness, i.e., the angle corresponding to L-decay ≤ 1%, which reduces the impact on the driver.

[0063] In some embodiments of this application, an OLED privacy display product is proposed, which has at least one light-shielding layer on the encapsulation layer of the display panel to adjust the light emission angle and achieve the effect of privacy and narrow viewing angle. As shown in Figure 9, the OLED privacy display panel has a shared pixel opening area P1 and a privacy pixel opening area P2. The OLED privacy display panel also includes: a substrate 10, and a driving circuit layer 20, a pixel defining layer 30, a light-emitting layer 40, an encapsulation layer 50, a first light-shielding layer 60, a touch layer 70, a second light-shielding layer 80, and a microlens array layer 90 sequentially stacked on the substrate 10. The first light-shielding layer 60 and the second light-shielding layer 80 can be made of black resin material (BM). The first light-shielding layer 60 (BM1) is used to block light from a wide viewing angle, which can prevent light leakage from the display panel at a wide viewing angle. The second light-shielding layer 80 (BM2) is used to block light from a narrow viewing angle, which can reduce the cutoff angle of the display panel. The touch layer 70 is used to realize the touch function. The microlens array layer 90 is used to converge light, thereby improving the light emission efficiency of the front of the display panel.

[0064] As shown in Figure 9, to avoid light leakage at large viewing angles, the distance d between the opening boundary of the first light-shielding layer 60 and the opening boundary of the pixel defining layer 30 (i.e., the outward expansion value OUT of the first light-shielding layer 60 relative to the pixel defining layer 30) is generally small. This is because increasing the outward expansion value OUT(d) of the first light-shielding layer 60 will lead to light leakage at large viewing angles, but a small outward expansion value OUT(d) will increase the manufacturing difficulty of the first light-shielding layer 60; furthermore, a small outward expansion value OUT(d) will also reduce the amount of light entering the microlens array layer 90, thereby reducing the brightness of the front side. To avoid light leakage at large viewing angles, the height of the second light-shielding layer 80 is limited. If the second light-shielding layer 80 is too high, light will leak from the middle of the first light-shielding layer 60 and the second light-shielding layer 80. Therefore, if the height of the second light-shielding layer 80 is too high, it will limit the cutoff angle from decreasing further.

[0065] The display panel provided in some embodiments of this disclosure can switch between a shared mode and a privacy mode by setting a shared pixel opening area and a privacy pixel opening area. By adding a light modulation layer between the encapsulation layer and the first light-shielding layer, light with small angles is transmitted when passing through the light-transmitting area corresponding to the pixel opening area, while light with large angles is blocked when passing through the light-shielding area corresponding to the non-pixel opening area. The brightness of the large-angle light is attenuated, which is equivalent to modulating the large-angle light before the first light-shielding layer. The risk of light leakage at large viewing angles is reduced. When manufacturing the first light-shielding layer, the width of the first shared opening and the first privacy opening can be increased (i.e., the outward expansion value is increased), which reduces the process difficulty and can improve the brightness of the front side. The height of the second light-shielding layer from the light-emitting layer can be increased compared with related technologies, further reducing the cutoff angle corresponding to the privacy mode. Therefore, the light modulation layer added in this disclosure is used to modulate the light of the display panel at large viewing angles, which can reduce the design requirements of the first light-shielding layer and the second light-shielding layer, increase the design space of the first light-shielding layer and the second light-shielding layer, further reduce the cutoff angle, improve the front light emission, and achieve better optical effects.

[0066] In some embodiments, in the display panel provided in the present disclosure, as shown in Figures 1-8, the orthographic projection of the opening boundary of the first light-shielding layer 6 onto the substrate 1 can be located within the orthographic projection of the non-pixel opening area of ​​the pixel defining layer 2 onto the substrate 1, that is, the outward expansion value of the first light-shielding layer 6 can be increased.

[0067] In some embodiments, in the display panel provided in the present disclosure, as shown in Figures 1-8, the width of the second shared opening 71 may be the same as or different from the width of the first shared opening 61. For example, the width of the second shared opening 71 may be greater than the width of the first shared opening 61, which can improve the front light output brightness; the width of the second privacy opening 72 may be the same as or different from the width of the first privacy opening 62. For example, the width of the second privacy opening 72 may be greater than the width of the first privacy opening 62, which can improve the front light output brightness.

[0068] In some embodiments, the substrate disclosed herein may be a rigid substrate or a flexible substrate; wherein, the material of the rigid substrate may be, but is not limited to, glass, etc., and the material of the flexible substrate may be, but is not limited to, polyethylene terephthalate (PET), polyimide (PI), etc.

[0069] In some embodiments, the materials of the first and second light-shielding layers of this disclosure are black resin materials (BM).

[0070] In some embodiments, in the display panel provided in this disclosure, as shown in FIG1, the light modulation layer 5 may include alternately stacked low-refractive-index transparent insulating layers 53 and high-refractive-index transparent insulating layers 54. The light modulation layers 5 corresponding to the light-transmitting area 51 and the light-shielding area 52 are all low-refractive-index transparent insulating layers 53 closest to the substrate 1, and the light modulation layers 5 5 corresponding to the light-transmitting area 51 are all low-refractive-index transparent insulating layers 53 furthest from the substrate 1. The light modulation layers 5 5 corresponding to the light-shielding area 52 are all high-refractive-index transparent insulating layers 54 furthest from the substrate 1. That is, among the alternately stacked low-refractive-index transparent insulating layers 53 and high-refractive-index transparent insulating layers 54, the low-refractive-index transparent insulating layer 53 is closest to the substrate 1, and the high-refractive-index transparent insulating layer 54 is furthest from the substrate 1. Furthermore, the high-refractive-index transparent insulating layer 54 furthest from the substrate 1 has a cutout portion located in the light-transmitting area 51. The orthographic projection of the cutout portion onto the substrate 1 overlaps with the orthographic projection of the pixel opening areas (P1 and P2) onto the substrate 1. This creates a stacked structure of at least 51 light-transmitting areas with low / high / low refractive indexes in the pixel opening areas (P1 and P2), and a stacked structure of at least 52 light-shielding areas with low / high / low / high refractive indexes in the non-pixel opening areas. When small-angle light passes through the stacked structures corresponding to the low / high / low refractive indexes in the pixel opening areas (P1 and P2), less small-angle light is reflected, thus achieving light transmission for small-angle light. When large-angle light passes through the stacked structures corresponding to the low / high / low / high refractive indexes in the non-pixel opening areas, more large-angle light is reflected, thus achieving light transmission for large-angle light. The light-blocking is equivalent to modulating large-angle light before the first light-blocking layer 6 and the second light-blocking layer 7, causing the brightness of large-angle light to decrease. When manufacturing the first light-blocking layer 6, the outward expansion value can be increased, reducing the difficulty of the process and improving the brightness of the front light output. The height of the second light-blocking layer 7 does not need to be strictly required and can be made higher, achieving the purpose of modulating the large-angle light of the device. This reduces the design requirements of the first light-blocking layer 6 and the second light-blocking layer 7, increases the design space of the first light-blocking layer 6 and the second light-blocking layer 7, can further reduce the cutoff angle, improve the front light output, and achieve better optical effects.

[0071] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG1, the light modulation layer 5 may include a first low refractive index transparent insulating layer 531, a first high refractive index transparent insulating layer 541, a second low refractive index transparent insulating layer 532 and a second high refractive index transparent insulating layer 542 stacked sequentially, with the first low refractive index transparent insulating layer 531 close to the substrate 1.

[0072] The first low-refractive-index transparent insulating layer 531, the first high-refractive-index transparent insulating layer 541, and the second low-refractive-index transparent insulating layer 532 are all planar structures, that is, the first high-refractive-index transparent insulating layer 541 and the second low-refractive-index transparent insulating layer 532 are both set as a single layer. The second high-refractive-index transparent insulating layer 542 includes a cutout portion that corresponds one-to-one with each shared pixel opening area P1 and each privacy pixel opening area P2. That is, the cutout portion corresponds to the light-transmitting area 51, and the non-cutout area of ​​the second high-refractive-index transparent insulating layer 542 corresponds to the light-shielding area 52. In this way, a light-transmitting stacked structure of a first low-refractive-index transparent insulating layer 531 / a first high-refractive-index transparent insulating layer 541 / a second low-refractive-index transparent insulating layer 532 is formed in the pixel opening area (P1 and P2) (i.e., the light-transmitting area 51), and a light-shielding and anti-reflection stacked structure of a first low-refractive-index transparent insulating layer 531 / a first high-refractive-index transparent insulating layer 541 / a second low-refractive-index transparent insulating layer 532 / a second high-refractive-index transparent insulating layer 542 is formed in the non-pixel opening area (i.e., the light-shielding area 52).

[0073] In some embodiments, the thicknesses of the first low-refractive-index transparent insulating layer 531, the first high-refractive-index transparent insulating layer 541, the second low-refractive-index transparent insulating layer 532, and the second high-refractive-index transparent insulating layer 542 can all be the same or different; of course, they can also be partially the same and partially different, for example, the thicknesses of the first low-refractive-index transparent insulating layer 531 and the second low-refractive-index transparent insulating layer 532 are the same, and the thicknesses of the first high-refractive-index transparent insulating layer 541 and the second high-refractive-index transparent insulating layer 542 are the same.

[0074] In some embodiments, the refractive indices of the first low-refractive-index transparent insulating layer 531 and the second low-refractive-index transparent insulating layer 532 may be the same or different; the refractive indices of the first high-refractive-index transparent insulating layer 541 and the second high-refractive-index transparent insulating layer 542 may be the same or different. Of course, when there are more than three low-refractive-index transparent insulating layers, they may be partially the same and partially different; similarly, when there are more than three high-refractive-index transparent insulating layers, they may be partially the same and partially different.

[0075] In some embodiments, in the display panel provided in this disclosure, as shown in FIG1, the refractive index of the low-refractive-index transparent insulating layers (531 and 532) can be 1.4-1.6. For example, the material of the first low-refractive-index transparent insulating layer 531 and the second low-refractive-index transparent insulating layer 532 is SiO, with a refractive index of 1.5, and the thickness can be 500-700nm, such as 500nm, 600nm, 700nm, etc.; the refractive index of the high-refractive-index transparent insulating layers (541 and 542) can be 1.7-1.9. For example, the material of the first high-refractive-index transparent insulating layer 541 and the second high-refractive-index transparent insulating layer 542 is SiN, with a refractive index of 1.8, and the thickness can be 250-350nm, such as 250nm, 300nm, 350nm, etc. The thickness settings of each low-refractive-index transparent insulating layer and each high-refractive-index transparent insulating layer can make the light-transmitting area 51 of the light modulation layer 5 have better light transmission effect and the light-shielding area 52 have better reflection effect.

[0076] Alternatively, the second high-refractive-index transparent insulating layer 542 can be formed with an etching process to create a cutout.

[0077] In some embodiments, as shown in FIG1, the display panel provided in this disclosure takes the formation of four layers of low refractive index / high refractive index / low refractive index / high refractive index in the light-shielding area 52 as an example, and the formation of three layers of low refractive index / high refractive index / low refractive index in the light-transmitting area 51 as an example. Of course, it is not limited to this. As long as the light-shielding area 52 is alternately set with low refractive index / high refractive index, and the bottom layer is low refractive index and the top layer is high refractive index; and the light-transmitting area 51 is alternately set with low refractive index / high refractive index, and the bottom layer and the top layer are both low refractive index.

[0078] In some embodiments, the display panel provided in the present disclosure, as shown in FIG1, further includes: a plurality of lenses 8 located on the side of at least one light-shielding layer away from the substrate 1, for example, a plurality of lenses 8 located on the side of the second light-shielding layer 7 away from the substrate 1, and a first organic layer 9 located on the side of the plurality of lenses 8 away from the substrate 1; the refractive index of the lenses 8 is greater than the refractive index of the first organic layer 9; in some embodiments, the plurality of lenses 8 may also be located between the first light-shielding layer 7 and the second light-shielding layer 8.

[0079] In some embodiments, in the display panel provided in this disclosure, as shown in FIG1, the lens 8 is configured in a one-to-one correspondence with the shared pixel opening area P1 and the privacy pixel opening area P2. The orthogonal projection of the lens 8 on the substrate 1 covers the orthogonal projection of the corresponding shared pixel opening area P1 on the substrate 1, and the orthogonal projection of the lens 8 on the substrate 1 covers the orthogonal projection of the corresponding privacy pixel opening area P2 on the substrate 1. In this way, the high-refractive-index lens 8 and the low-refractive-index first organic layer 9 can form a light extraction structure. The light emitted by the light-emitting layer 3 is refracted at the interface between the high-refractive-index lens 8 and the low-refractive-index first organic layer 9, which can achieve light convergence and improve the brightness of the front light output.

[0080] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG1, the shape of the cross section of the lens 8 in the direction perpendicular to the substrate 1 can be semi-circular, trapezoidal, etc., and the shapes of the lenses corresponding to different pixel opening areas can be the same or different.

[0081] In some embodiments, as shown in FIG1, the display panel provided in this disclosure embodiment further includes: a driving circuit layer 100 located between the substrate 1 and the pixel defining layer 2; an anode 200 located between the driving circuit layer 100 and the pixel defining layer 2 and corresponding to each pixel opening area (P1 and P2); a cathode 300 located between the pixel defining layer 2, the light-emitting layer 3, and the encapsulation layer 4; a second organic layer 400 located between the light modulation layer 5 and the first light-shielding layer 6; a touch structure 500 located between the first light-shielding layer 6 and the second light-shielding layer 7; a third organic layer 600 located between the first light-shielding layer 6 and the touch structure 500; a fourth organic layer 700 located between the touch structure 500 and the second light-shielding layer 7; and a fifth organic layer 800 located between the second light-shielding layer 7 and the lens 8. Specifically, the arrangement of the second organic layer 400 to the fifth organic layer 800 serves two purposes: firstly, to achieve planarization; and secondly, to adjust the height of each light-shielding layer (6 and 7) and the lens 8, thereby improving privacy protection and front light emission effects.

[0082] Specifically, the materials of the second organic layer 400 to the fifth organic layer 800 can be OC materials.

[0083] Specifically, as shown in Figure 1, the encapsulation layer 4 may include a first inorganic layer 41, an organic material layer 42, and a second inorganic layer 43 stacked together. The encapsulation layer 4 can not only isolate the light-emitting layer 3 from the outside world, preventing water and oxygen from invading the light-emitting layer 3 of the display panel and affecting the service life of the display panel, but also the surface of the encapsulation layer 3 facing away from the substrate 1 is flat, so that the film layer (such as the touch structure 104) that is subsequently manufactured can be manufactured on the flat surface, which is more conducive to improving the touch display effect of the display panel.

[0084] Specifically, as shown in Figure 1, the driving circuit layer 100 includes: a gate metal layer 101, a gate insulating layer 102, an active layer 103, a source / drain metal layer 104, and a planarization layer 105, which are sequentially stacked between the substrate 1 and the anode 200; wherein, the gate metal layer 101 generally provides the gate G, gate lines, etc., the source / drain metal layer 104 generally provides the source S, drain G, data lines, etc., and the anode 200 is electrically connected to the drain D (or source S) through a via penetrating the planarization layer 105.

[0085] In some embodiments, the anode 200 may be a stack of indium tin oxide / silver / indium tin oxide with high reflectivity, and a hole injection layer and a hole transport layer may be included between the light-emitting layer 3 and the anode 200, and an electron transport layer and an electron injection layer may be included between the light-emitting layer 3 and the cathode 300; the cathode 300 may be made of magnesium silver alloy material.

[0086] In some embodiments, the touch structure 500 may employ Flexible Multi-Layer On Cell (FMLOC) touch technology, which enables the fabrication of lighter and thinner display devices, and this technology can be applied to foldable and rollable OLED display devices.

[0087] In some embodiments, the touch structure 500 may employ a single-layer touch metal layer, a double-layer touch metal layer, or even three or more layers of touch metal layers to achieve touch functionality. The specific structure of the touch structure is the same as that in related technologies and will not be described in detail here.

[0088] In some embodiments, the display panel provided in this disclosure may use a polarizer, or a Color On Encapsulation (COE) process may be used instead of a traditional polarizer. When a polarizer is used, the display panel may also include a polarizer located on the side of the first organic layer 9 away from the substrate 1. When a COE process is used, the display panel may also include multiple color filters, each of which may be located within the second shared opening 71 and the second privacy opening 72 corresponding to the second light-shielding layer 7. Of course, each color filter may also be located within the first shared opening 61 and the first privacy opening 62 corresponding to the first light-shielding layer 6. Specifically, the display panel may include red pixels (R), green pixels (G), and blue pixels (B), and the color filters may include red color filters, green color filters, and blue color filters. When the COE structure is adopted in the embodiments of this disclosure, not only can the contrast of the display panel be improved, that is, the color filters can filter the emitted light and improve the color purity of the emitted light, but it can also play a role in reducing reflection and improving the user experience. Furthermore, the black matrix + color filter structure can replace the traditional polarizer. The thickness of the black matrix + color filter is much smaller than the thickness of the polarizer, and the overall panel thickness is reduced, which is conducive to thinner and lighter designs.

[0089] In some embodiments, the display panel provided in this disclosure can be applied to the automotive field, for example as a passenger-side display. When parked, the shared pixel and the privacy pixel are both illuminated by the driving circuit layer, or the shared pixel is illuminated while the privacy pixel is not illuminated, to achieve a sharing mode. When driving, only the privacy pixel is illuminated by the driving circuit layer to achieve a privacy mode. Thus, privacy and sharing modes can be switched.

[0090] The display panel provided in this disclosure is not limited to automotive applications, but can also be used in electronic products such as mobile phones, tablets, and computers.

[0091] In a specific embodiment, the inventors of this disclosure simulated the L-decay of the light emitted from the display panel shown in Figure 1 as the viewing angle increases. The simulation results are shown in Figure 10. Curve E represents the L-decay when the light modulation layer 5 is not set, and curve F represents the L-decay of the pixel opening area when the light modulation layer 5 is set. It can be seen that there is no effect on the brightness of the pixel opening area. Curve G represents the L-decay of the non-pixel opening area when the light modulation layer 5 is set. It can be seen that the brightness decay of the light at a large angle in the non-pixel opening area is accelerated. In this way, the outward expansion value of the first light-shielding layer 6 can be increased, reducing the process difficulty and increasing the brightness of the front light emitted. The second light-shielding layer 7 can be made higher, further reducing the cutoff angle.

[0092] In some embodiments, in the display panel provided in the present disclosure, as shown in Figures 2-8, the structure of Figures 2-8 is basically the same as that of Figure 1, except that the structure of the light modulation layer 5 in Figures 2-8 is different from that in Figure 1. The light modulation layer 5 in Figures 2-8 may include: a first metal layer 55 that is close to the substrate 1 and is disposed on its entire surface; a second metal layer 56 that is located on the side of the first metal layer 55 away from the substrate 1 and is disposed on its entire surface; and a first transparent insulating layer 57 that is disposed between the first metal layer 55 and the second metal layer 56 and corresponds to each shared pixel opening area P1 and each privacy pixel opening area P2, that is, the first transparent insulating layer 57 is located in the light-transmitting area 51; the first metal layer 55 and the second metal layer 56 are in direct contact in the non-pixel opening area. This creates a metal / transparent insulating layer / metal-like microcavity structure in the pixel opening areas (P1 and P2), and two superimposed metal layers in the non-pixel opening areas. When small-angle light passes through the microcavity structure in the pixel opening areas (P1 and P2), the light is reflected and refracted back and forth between the first metal layer 55 and the second metal layer 56 before being transmitted, meaning that small-angle light is reflected less. When large-angle light passes through the two metal layers in the non-pixel opening areas, more light is reflected. This is equivalent to modulating large-angle light before the first light-shielding layer 6 and the second light-shielding layer 7, causing the brightness of large-angle light to decrease. When fabricating the first light-shielding layer 6, the outward expansion value can be increased, reducing the manufacturing difficulty and improving the brightness of the front light output. The height of the second light-shielding layer 7 does not need to be strictly required and can be made higher to achieve the purpose of modulating the large-angle light of the device. This reduces the design requirements for the first light-shielding layer 6 and the second light-shielding layer 7, increases the design space for the first light-shielding layer 6 and the second light-shielding layer 7, and can further reduce the cutoff angle, improve the front light output, and achieve better optical effects.

[0093] In some embodiments, as shown in Figures 2-8, the materials of the first metal layer 55 and the second metal layer 56 can be Ag, Al, Mo, etc. The materials of the first metal layer 55 and the second metal layer 56 can be the same or different. The sum of the thicknesses of the first metal layer 55 and the second metal layer 56 can be 10-20 angstroms, for example, 10 angstroms, 15 angstroms, 20 angstroms, etc., so as not to affect the transmittance of the pixel opening area, and to realize that large-angle light passing through the non-pixel opening area is reflected.

[0094] In some embodiments of the display panel provided in this disclosure, as shown in FIG2, the thickness of the first transparent insulating layer 57 can be 1.5-2μm, such as 1.5μm, 2μm, 2.5μm, etc. This thickness setting can make the transmittance of the pixel opening area higher.

[0095] In some embodiments, as shown in FIG2, in the display panel provided in the present disclosure, the first transparent insulating layer 57 can be a single-layer structure, and the material of the first transparent insulating layer 57 can be an inorganic material or an organic material. The inorganic material can be SiO or SiN, and the organic material can be OC material.

[0096] In some embodiments, as shown in FIG2, in the display panel provided in the present disclosure, the method for fabricating the light modulation layer 5 may be as follows: a first metal layer 55 is first prepared on the encapsulation layer 4, and then a transparent insulating material (OC or SiO) with a thickness of, for example, 2 μm is deposited on the first metal layer 55. After that, the transparent insulating material corresponding to the non-pixel opening area is etched away using an etching process to form a first transparent insulating layer 57. Finally, a second metal layer 56 is prepared on the first transparent insulating layer 57.

[0097] In some embodiments, as shown in FIG2, the first transparent insulating layer 57 in the above-described display panel provided in the present disclosure can also be a multilayer structure, wherein the material of each layer in the multilayer structure is an inorganic material. For example, the first transparent insulating layer 57 includes SiO layers and SiN layers that are stacked alternately, thus forming a first transparent insulating layer 57 with alternating stacks of high and low refractive index materials, which is beneficial to improving the brightness of the front light output.

[0098] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG2, the cross-sectional shape of the first transparent insulating layer 57 along the thickness direction of the substrate 1 can be rectangular, and the second metal layer 56 is disposed along the first transparent insulating layer 57 in the pixel opening area (P1 and P2), so that the outer surface of the second metal layer 56 forms a rectangular structure at the position corresponding to the first transparent insulating layer 57.

[0099] It should be noted that conformal setting means that the outer surface of the previous film layer has the same shape as the outer surface of the subsequent film layer.

[0100] In some embodiments, as shown in FIG2, the material and thickness of the first metal layer 55 corresponding to the pixel opening regions (P1 and P2), the number of layers, the material and thickness of the first transparent insulating layer 57, and the material and thickness of the second metal layer 56 can be one of the following:

[0101] 01、

[0102] 02、

[0103] 03、

[0104] 04、

[0105] 05.

[0106] 06、

[0107] 07、

[0108] In a specific implementation, the inventors of this disclosure simulated the L-decay of the light emitted from the display panel corresponding to the above-mentioned number 01, where the brightness decreases with increasing viewing angle. The simulation results are shown in Figure 11. Curve J represents the L-decay when the light modulation layer 5 is not set. Curve 01 represents the brightness attenuation of small-angle light in the pixel opening area (P1 and P2) after setting the light modulation layer 5 corresponding to the above-mentioned number 01. Curve K represents the brightness attenuation of large-angle light in the non-pixel opening area after setting the light modulation layer 5 corresponding to the above-mentioned number 01. Although the brightness of both the pixel opening area (P1 and P2) and the non-pixel opening area decreases, the decrease in the non-pixel opening area is faster. Therefore, the modulation effect of large-angle light can be achieved. In this way, the outward expansion value of the first light-shielding layer 6 can be increased, reducing the process difficulty and increasing the brightness of the front light emission. The second light-shielding layer 7 can be made higher, further reducing the cutoff angle.

[0109] In a specific implementation, the inventors of this disclosure simulated the L-decay of light emission brightness as the viewing angle increases using the display panels corresponding to the above-mentioned numbers 01-07. The simulation results are shown in Figure 12. It can be seen that the material and thickness of the first metal layer 55, the number of layers, material and thickness of the first transparent insulating layer 57, and the material and thickness of the second metal layer 56 can be flexibly designed, and the optical effects are all good.

[0110] In some embodiments, in the display panel provided in this disclosure, as shown in FIG3, the structure of FIG3 is basically the same as that of FIG2, except that the cross-sectional shape of the first transparent insulating layer 57 along the thickness direction of the substrate 1 in FIG3 is an inverted trapezoid, and the second metal layer 56 is disposed along the first transparent insulating layer 57 in the pixel opening areas (P1 and P2). Thus, the outer surface of the second metal layer 56 forms an inverted trapezoidal structure at the position corresponding to the first transparent insulating layer 57, that is, the second metal layer 56 forms a metal slope with the same shape as the inclined surface of the inverted trapezoid in the pixel opening areas (P1 and P2). Thus, the structure shown in FIG3 not only has the large-angle light modulation effect of the structure shown in FIG2, but also a part of the emitted light is blocked by the metal slope of the second metal layer 56, further attenuating the brightness of the large-angle light, thereby further achieving the purpose of modulating the large-viewing-angle light of the display panel.

[0111] In some embodiments, as shown in FIG3, in the display panel provided in the present disclosure, the angle between the two bottom corners of the inverted trapezoid can be greater than or equal to 125°, which has a better effect on blocking large-angle light.

[0112] It should be noted that, in the embodiments of this disclosure, Figure 2 shows that the cross-sectional shape of the first transparent insulating layer 57 along the thickness direction of the substrate 1 is rectangular, and Figure 3 shows that the cross-sectional shape of the first transparent insulating layer 57 along the thickness direction of the substrate 1 is inverted trapezoidal. Of course, it is also possible that in Figure 2, some of the first transparent insulating layers 57 along the thickness direction of the substrate 1 have a rectangular cross-sectional shape and some of the first transparent insulating layers 57 along the thickness direction of the substrate 1 have an inverted trapezoidal cross-sectional shape; in Figure 3, some of the first transparent insulating layers 57 along the thickness direction of the substrate 1 have a rectangular cross-sectional shape and some of the first transparent insulating layers 57 along the thickness direction of the substrate 1 have an inverted trapezoidal cross-sectional shape.

[0113] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG4, FIG4 has a structure that is basically the same as FIG2, except that: the shape of the first transparent insulating layer 57 in FIG4 is different from that in FIG2, and the shape of the second metal layer 56 in FIG4 is different from that in FIG2; specifically, the first transparent insulating layer 57 in FIG4 includes: a bottom surface D disposed near the substrate 1, a top surface T disposed away from the substrate 1, and two opposite side surfaces (A and B) connecting the bottom surface D and the top surface T; wherein, each side surface (A and B) is an arc surface protruding to the side away from the substrate 1, the top surface T is a plane, and the second metal layer 56 is disposed along the first transparent insulating layer 57 in the pixel opening area (P1 and P2). In this way, a "metal-transparent insulating layer-metal" microcavity structure is formed in the pixel opening area (P1 and P2). When light at a small angle passes through this type of microcavity structure, less light is reflected. The two opposite sides (A and B) of the first transparent insulating layer 57 are lens-shaped. When light at a large angle passes through the arc surface, it can be refracted to a small angle, as shown in Figure 13. Figure 13 is a light path diagram of light at different angles emitted from the light-emitting layer 3 passing through the first transparent insulating layer 57. It can be seen that by setting the sides (A and B) of the first transparent insulating layer 57 as arc surfaces, the brightness of light at a large angle is reduced on the one hand, and the brightness of light emitted from the front is increased on the other hand.

[0114] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG4, the width of the top surface T can be the same as that of the bottom surface D. For example, the orthographic projection of the top surface T on the substrate 1 and the orthographic projection of the bottom surface D on the substrate 1 completely overlap, although there may be some error.

[0115] In some embodiments, as shown in FIG4, the width of the top surface T may be greater than the width of the bottom surface D. For example, the orthographic projection of the bottom surface D on the substrate 1 is located within the orthographic projection range of the top surface T on the substrate 1. Alternatively, the width of the bottom surface D may be greater than the width of the top surface T. For example, the orthographic projection of the top surface T on the substrate 1 is located within the orthographic projection range of the bottom surface D on the substrate 1.

[0116] In some embodiments of the display panel provided in this disclosure, as shown in FIG4, the edge of the top surface T extends beyond the bottom edge of the pixel opening areas (P1, P2). For example, the orthographic projection width of the bottom surface AB of the shared pixel opening area P1 on the substrate 1 is smaller than the orthographic projection width of the corresponding top surface T on the substrate 1, and the orthographic projection of the bottom surface AB of the shared pixel opening area P1 on the substrate 1 is within the orthographic projection range of the corresponding top surface T on the substrate 1; the orthographic projection width of the bottom surface CD of the privacy pixel opening area P2 on the substrate 1 is smaller than the orthographic projection width of the corresponding top surface T on the substrate 1, and the orthographic projection of the bottom surface CD of the privacy pixel opening area P2 on the substrate 1 is within the orthographic projection range of the corresponding top surface T on the substrate 1, so that the setting of the light modulation layer 5 does not affect the small-angle light emission; considering process fluctuations, the edge of the top surface T extends beyond the bottom edge of the corresponding pixel opening areas (P1 and P2) by 1-3 μm.

[0117] In some embodiments of the display panel provided in this disclosure, as shown in FIG4, the distance between the connection point H of the arc surfaces (A and B) and the top surface T and the bottom surface D is a first distance d1, and the orthographic projection width of the arc surfaces (A and B) on the substrate 1 is a second distance d2. The ratio of the first distance d1 to the second distance d2 is greater than or equal to 1. In this way, the arc surfaces (A and B) are close to circles or have a larger aspect ratio, which is beneficial for the refraction of large-angle light.

[0118] In some embodiments of the display panel provided in this disclosure, as shown in FIG4, the material of the first transparent insulating layer 57 is an organic material, and the thickness of the first transparent insulating layer 57 is 2-4 μm, which is beneficial for forming arc surfaces (A and B).

[0119] In some embodiments of the display panel provided in this disclosure, as shown in FIG4, the refractive index of the first transparent insulating layer 57 should be as high as possible, which is beneficial for the refraction of light at large angles. Optionally, the refractive index of the first transparent insulating layer 57 can be 1.55-1.7, for example, OC material.

[0120] In some embodiments, as shown in FIG4, in the display panel provided in the present disclosure, the method for preparing the light modulation layer 5 may include: firstly preparing a first metal layer 55 on the encapsulation layer 4, then depositing an OC material on the first metal layer 55, then using an etching process to etch away the OC material corresponding to the non-pixel opening area, then using a hot-melt method to hot-melt the OC material of the pixel opening area into a first transparent insulating layer 57 with arc surfaces on both sides, and finally preparing a second metal layer 56 on the first transparent insulating layer 57.

[0121] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG5, FIG5 has a structure that is basically the same as FIG4, except that each side (A and B) of the first transparent insulating layer 57 in FIG5 is an inclined surface, so that when light at a large angle passes through the inclined surface, it can also be refracted to a small angle.

[0122] Optionally, as shown in Figure 5, the angle between the inclined plane (A and B) and the bottom surface D can be 60-75°, for example, 60°, 65°, 70°, 75°, etc.

[0123] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG6, FIG6 has a structure that is basically the same as FIG4, except that the light modulation layer 5 in FIG6 further includes a second transparent insulating layer 58 located between the first metal layer 55 and the first transparent insulating layer 57. The cross-section of the second transparent insulating layer 58 along the thickness direction of the substrate 1 is an inverted trapezoid. The second metal layer 56 is disposed at the edges of the first transparent insulating layer 57 and the second transparent insulating layer 58 in a conformal manner, so that the second metal layer 56 forms an arc surface on the side of the first transparent insulating layer 57 and a slope on the side of the second transparent insulating layer 58. In this way, some high-angle light rays are totally reflected to a small angle by the slope of the second metal layer 56 when passing through the edge area of ​​the second transparent insulating layer 58, and some high-angle light rays are refracted to a small angle by the arc surface of the second metal layer 56 when passing through the edge area of ​​the first transparent insulating layer 57, as shown in Figure 14. Figure 14 is a light path diagram of light rays emitted from the light-emitting layer 3 at different angles when passing through the first transparent insulating layer 57 and the second transparent insulating layer 58. It can be seen that by setting the first transparent insulating layer 57 and the second transparent insulating layer 58, not only can the brightness of high-angle light rays be reduced, but the brightness of the front light emission can also be further improved.

[0124] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG6, the orthographic projection of the upper surface of the second transparent insulating layer 58 (inverted trapezoidal) away from the substrate 1 on the substrate 1 and the orthographic projection of the lower surface of the first transparent insulating layer 57 near the substrate 1 on the substrate 1 can completely overlap, although there may be some error.

[0125] In some embodiments, as shown in FIG6, the material of the second transparent insulating layer 58 in the display panel provided in the present disclosure can be an inorganic material, such as SiO, SiN, etc.

[0126] In some embodiments, as shown in FIG6, the method for preparing the light modulation layer 5 in the display panel provided in the present disclosure may include: firstly preparing a first metal layer 55 on the encapsulation layer 4, then depositing SiO or SiN material on the first metal layer 55, then using an etching process to etch away the SiO or SiN material corresponding to the non-pixel opening area, and forming an inverted trapezoidal second transparent insulating layer 58 in the pixel opening area, then depositing an OC material on the second transparent insulating layer 58, then using an etching process to etch away the OC material corresponding to the non-pixel opening area, then using a hot melt method to hot melt the OC material in the pixel opening area into a first transparent insulating layer 57 with arc surfaces on both sides, and finally preparing a second metal layer 56 on the first transparent insulating layer 57.

[0127] In some embodiments, in the display panel provided in this disclosure, as shown in FIG7, FIG7 has a structure that is basically the same as FIG4, except that the first transparent insulating layer 57 in FIG7 includes: a bottom surface D disposed near the substrate 1, and a top surface T connected to the bottom surface D and protruding to the side away from the substrate 1; wherein, the top surface T includes a plurality of arc surfaces distributed in an array. In this way, a plurality of small lenses are formed on the surface of the first transparent insulating layer 57 away from the substrate 1, as shown in FIG15. FIG15 is a light path diagram of light emitted from the light-emitting layer 3 at different angles passing through the first transparent insulating layer 57. It can be seen that by setting the top surface T of the first transparent insulating layer 57 to include a plurality of arc surfaces distributed in an array, the brightness of the front light emission can be further improved.

[0128] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG7, the ratio of the maximum height of each arc surface along the thickness direction of the substrate 1 to the orthogonal projection width of the corresponding arc surface on the substrate 1 (i.e., the aspect ratio of the arc surface) is greater than or equal to 0.5, preferably 0.7, which can improve the brightness of the front light output.

[0129] In some embodiments of the display panel provided in this disclosure, as shown in FIG7, the number of arc surfaces corresponding to each shared pixel opening area (P1) and each privacy pixel opening area (P2) is ≥3*3 array. This reduces the number of overlapping recesses of the lenses, thereby reducing the impact on the light emitted from the front.

[0130] In some embodiments, as shown in FIG7, in the display panel provided in the present disclosure, the orthographic projection of the edge of the outermost arc surface on the substrate 1 is located within the orthographic projection range of the non-pixel opening area on the substrate 1. In this way, when a portion of the large-angle side-view light passes through the edge area of ​​the pixel opening area, it can be refracted to a small angle by the outermost arc surface, thereby improving the brightness of the front light output.

[0131] In some embodiments, as shown in FIG7, in the display panel provided in the present disclosure, the method for preparing the light modulation layer 5 may include: firstly preparing a first metal layer 55 on the encapsulation layer 4, then depositing an OC material on the first metal layer 55, then using an etching process to etch away the OC material corresponding to the non-pixel opening area, then using a hot-melt method to hot-melt the OC material of the pixel opening area into a first transparent insulating layer 57 including a plurality of arc surfaces distributed in an array, and finally preparing a second metal layer 56 on the first transparent insulating layer 57.

[0132] In some embodiments, in the display panel provided in this disclosure, as shown in Figures 5-8, the second metal layer 56 has a recess U corresponding to the non-pixel opening area. The structure of Figure 8 is basically the same as that of Figure 2, except that the light modulation layer 5 in Figure 8 also includes a scattering particle layer 11 located within the recess U. The scattering particle layer 11 includes scattering particles 110 doped in a transparent material, such as resin. By providing a film layer with scattering particles 110 in the non-pixel opening area, a portion of the emitted light will be scattered by the scattering particles 110, further reducing the brightness of large-angle light and further achieving the purpose of modulating the large-angle light of the device.

[0133] Optionally, the particle size of the scattering particles 110 can be around 250 nm, and the scattering particles 110 can be silicon oxide microspheres.

[0134] In some embodiments, in the display panel provided in the present disclosure, as shown in FIG8, the top surface of the scattering particle layer 11 facing away from the substrate 1 is flush with the top surface of the second metal layer 56 facing away from the substrate 1, so that the film layer formed subsequently can be fabricated on a flat surface.

[0135] It should be noted that the scattering particle layer 11 of the present disclosure is not limited to being disposed in the recess U of FIG2 to form the structure of FIG8, but can also be disposed in the recess U of any of the structures of FIG3-FIG7, for example, as shown in FIG16, FIG16 is a scattering particle layer 11 disposed in the recess U of FIG3.

[0136] It should be noted that other essential components of the touch display panel are all known to those skilled in the art and will not be described in detail here, nor should they be construed as limiting this disclosure.

[0137] Based on the same inventive concept, this disclosure also provides a display device, including the display panel described above. Since the principle by which this display device solves the problem is similar to that of the display panel described above, the implementation of the display device provided in this disclosure can refer to the implementation of the display panel described above, and repeated details will not be elaborated further.

[0138] In specific implementation, the display device provided in the embodiments of this disclosure may be a full-screen display device or a flexible display device, etc., and is not limited thereto.

[0139] In specific implementations, the display device provided in this disclosure embodiment can be a full-screen mobile phone as shown in FIG17. Of course, the display device provided in this disclosure embodiment can also be any product or component with display function, such as an in-vehicle display screen, projector, 3D printer, virtual reality device, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Other essential components of this display device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limitations on the present invention. This display device includes, but is not limited to, components such as: radio frequency unit, network module, audio output & input unit, sensor, display unit, user input unit, interface unit, memory, processor, and power supply. Furthermore, those skilled in the art will understand that the above structure does not constitute a limitation on the display device provided in this disclosure embodiment. In other words, the display device provided in this disclosure embodiment can include more or fewer of the above components, or combine certain components, or have different component arrangements.

[0140] This disclosure provides a display panel and display device that, by setting a shared pixel opening area and a privacy pixel opening area, enables switching between a shared mode and a privacy mode. By adding a light modulation layer between the encapsulation layer and the first light-shielding layer, small-angle light is transmitted through the light-transmitting area corresponding to the pixel opening area, while large-angle light is blocked when passing through the light-shielding area corresponding to a non-pixel opening area. This attenuates the brightness of large-angle light, effectively modulating it before the first light-shielding layer, reducing the risk of light leakage at wide viewing angles. This allows for an increase in the width of the first shared opening and the first privacy opening during the subsequent fabrication of the first light-shielding layer (i.e., an increased outward expansion value), reducing manufacturing complexity and improving front-side brightness. The height of the second light-shielding layer from the light-emitting layer can be increased compared to related technologies, further reducing the cutoff angle corresponding to the privacy mode. Therefore, the added light modulation layer in this disclosure modulates the large-viewing-angle light of the display panel, reducing the design requirements for the first and second light-shielding layers, increasing design space for both layers, further reducing the cutoff angle, improving front-side light emission, and achieving better optical effects.

[0141] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0142] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A display panel, wherein, include: Substrate; A pixel defining layer is located on one side of the substrate. The pixel defining layer includes a plurality of pixel opening regions and non-pixel opening regions located between adjacent pixel opening regions. The plurality of pixel opening regions include a plurality of shared pixel opening regions and a plurality of privacy pixel opening regions. Multiple light-emitting layers are respectively located in the corresponding shared pixel opening area and the corresponding privacy pixel opening area; An encapsulation layer is located on the side of the pixel defining layer and the light-emitting layer that faces away from the substrate. A light modulation layer is located on the side of the encapsulation layer opposite to the substrate. The light modulation layer includes a light-transmitting area corresponding to the shared pixel opening area and the privacy pixel opening area, and a light-shielding area corresponding to the non-pixel opening area. At least one light-shielding layer is located on the side of the light modulation layer away from the substrate. Each light-shielding layer includes a shared opening corresponding to one-to-one with the plurality of shared pixel opening areas and a privacy opening corresponding to one-to-one with the plurality of privacy pixel opening areas.

2. The display panel as claimed in claim 1, wherein, The light modulation layer includes alternating stacked low-refractive-index transparent insulating layers and high-refractive-index transparent insulating layers. In the light-transmitting area and the light-shielding area, the light modulation layer closest to the substrate is the low-refractive-index transparent insulating layer. In the light modulation layer corresponding to the light-transmitting area, the light modulation layer farthest from the substrate is the low-refractive-index transparent insulating layer. In the light modulation layer corresponding to the light-shielding area, the light modulation layer farthest from the substrate is the high-refractive-index transparent insulating layer.

3. The display panel as described in claim 2, wherein, The optical modulation layer includes a first low-refractive-index transparent insulating layer, a first high-refractive-index transparent insulating layer, a second low-refractive-index transparent insulating layer, and a second high-refractive-index transparent insulating layer stacked sequentially, with the first low-refractive-index transparent insulating layer close to the substrate. The first low-refractive-index transparent insulating layer, the first high-refractive-index transparent insulating layer and the first Both low-refractive-index transparent insulating layers are planar structures, and the second high-refractive-index transparent insulating layer includes cutout portions that correspond one-to-one with each of the shared pixel opening areas and each of the privacy pixel opening areas.

4. The display panel as claimed in claim 3, wherein, The low-refractive-index transparent insulating layer has a refractive index of 1.4-1.6, and the high-refractive-index transparent insulating layer has a refractive index of 1.7-1.

9.

5. The display panel as claimed in claim 1, wherein, The light modulation layer includes: a first metal layer disposed close to the substrate and covering its entire surface; a second metal layer disposed on the side of the first metal layer away from the substrate and covering its entire surface; and a first transparent insulating layer disposed between the first metal layer and the second metal layer and corresponding to each of the shared pixel opening areas and each of the privacy pixel opening areas; the first metal layer and the second metal layer are in direct contact in the non-pixel opening areas.

6. The display panel as claimed in claim 5, wherein, The cross-sectional shape of the first transparent insulating layer along the thickness direction of the substrate includes at least one of a rectangle and an inverted trapezoid.

7. The display panel as claimed in claim 6, wherein, The first transparent insulating layer is a single-layer structure, and the material of the first transparent insulating layer is an inorganic material or an organic material; Alternatively, the first transparent insulating layer may be a multilayer structure, wherein each layer of the multilayer structure is made of inorganic material.

8. The display panel as claimed in claim 5, wherein, The first transparent insulating layer includes: a bottom surface disposed near the substrate, a top surface disposed away from the substrate, and two opposing side surfaces connecting the bottom surface and the top surface; wherein each side surface is an arc surface protruding away from the substrate, or each side surface is a slope.

9. The display panel as claimed in claim 8, wherein, The distance between the connection point of the arc surface and the top surface and the bottom surface is the first distance, and the orthographic projection width of the arc surface on the substrate is the second distance. The ratio of the first distance to the second distance is greater than or equal to 1.

10. The display panel as claimed in claim 8, wherein, The angle between the inclined plane and the bottom surface is 60-75°.

11. The display panel according to any one of claims 8-10, wherein, The first transparent insulating layer is made of organic material, and its thickness is 2-4 μm.

12. The display panel according to any one of claims 8-10, wherein, The refractive index of the first transparent insulating layer is 1.55-1.

7.

13. The display panel according to any one of claims 8-12, wherein, The edge of the top surface extends 1-3 μm beyond the bottom edge of the pixel opening area.

14. The display panel according to any one of claims 8-13, wherein, The optical modulation layer further includes a second transparent insulating layer located between the first metal layer and the first transparent insulating layer, wherein the cross-section of the second transparent insulating layer along the thickness direction of the substrate is an inverted trapezoid.

15. The display panel as claimed in claim 14, wherein, The material of the second transparent insulating layer is an inorganic material.

16. The display panel as claimed in claim 5, wherein, The first transparent insulating layer includes: a bottom surface disposed near the substrate, and a top surface connected to the bottom surface and protruding away from the substrate; wherein the top surface includes a plurality of arc surfaces distributed in an array.

17. The display panel as claimed in claim 16, wherein, The number of arc surfaces corresponding to each shared pixel opening area and each privacy pixel opening area is ≥3*3 array.

18. The display panel according to any one of claims 5-17, wherein, The second metal layer is conformally disposed along the first transparent insulating layer in the pixel opening region.

19. The display panel according to any one of claims 5-18, wherein, The second metal layer has a recess corresponding to the non-pixel opening area, and the light modulation layer further includes a scattering particle layer located within the recess.

20. A display device, wherein, Includes the display panel as described in any one of claims 1-19.

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