Display panel and display device

Abstract

The present application belongs to the field of display, and specifically relates to a display panel and a display device. The display panel includes a base substrate, a light-emitting layer, a diffusion layer, and a light-shielding layer formed in sequence. The light-emitting layer includes a plurality of display sub-pixels and at least one anti-peeping sub-pixel. The light-shielding layer includes a light-shielding unit. The light-shielding unit corresponds one-to-one with the anti-peeping sub-pixel. The orthographic projection of the anti-peeping sub-pixel on the light-shielding layer is located within the light-shielding unit. The first portion of light from the anti-peeping sub-pixel is blocked by the light-shielding unit, and the second portion of light from the anti-peeping sub-pixel is emitted from around the light-shielding unit. The diffusion layer is formed between the light-emitting layer and the light-shielding layer, and is at least used to diffuse the second portion of light in a direction away from the light-shielding unit. The present application increases the anti-peeping angle of the display panel by diffusing part of the light from the anti-peeping sub-pixel. Such a design can reduce the size of the light-shielding unit, thereby reducing the aperture loss of the display panel.

Description

Technical Field

[0001] The present application belongs to the field of display, and specifically relates to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display panels do not require a backlight source and have the advantages of being flexible, thin, high brightness, low power consumption, fast response, and a wide color gamut. They are widely used in electronic products such as televisions, mobile phones, and laptops.

[0003] The active emission of organic light-emitting diodes (OLEDs) enables OLED display panels to have a wider viewing angle, typically up to 170 degrees. While this wider viewing angle provides a better visual experience, users may also wish to adjust the viewing angle to better protect trade secrets and personal privacy.

[0004] Existing anti-peeping display panels use a privacy film to prevent privacy. When the privacy function is not needed, the film can only be removed, making it inconvenient to turn the privacy function on and off. To solve this problem, some display panels are equipped with privacy pixels. When the privacy pixels are turned on, the light from the privacy pixels is blocked when looking straight ahead. When looking at the side, the light emitted by the privacy pixels interferes with the light from the display pixels, achieving privacy protection when looking at the side. However, to achieve wide-angle privacy protection, the light-shielding structure needs to be made larger, resulting in an increase in the aperture ratio loss of the display panel. Summary of the Invention

[0005] The purpose of the present application is to provide a display panel and a display device to reduce the aperture ratio loss of the display panel.

[0006] In order to achieve the above-mentioned object, the present application provides a display panel, including a base substrate, and the display panel further includes:

[0007] A light-emitting layer is formed on one side of the base substrate, and the light-emitting layer includes a plurality of display sub-pixels and at least one anti-peeping sub-pixel;

[0008] a light shielding layer formed on a side of the light-emitting layer away from the base substrate, the light shielding layer including light shielding units, the light shielding units corresponding one-to-one to the anti-peeping sub-pixels, the orthographic projections of the anti-peeping sub-pixels on the light shielding layer correspondingly located within the light shielding units, a first portion of light from the anti-peeping sub-pixels being blocked by the light shielding units, and a second portion of light from the anti-peeping sub-pixels being emitted from around the light shielding units;

[0009] The diffusion layer is formed between the light-emitting layer and the light-shielding layer, and is at least used to diffuse the second portion of light in a direction away from the light-shielding unit.

[0010] Optionally, the diffusion layer includes a first diffusion layer and a second diffusion layer, the first diffusion layer is formed between the light-emitting layer and the light-shielding layer, the second diffusion layer is formed on a side of the first diffusion layer away from the base substrate, and the refractive index of the first diffusion layer is greater than that of the second diffusion layer.

[0011] Optionally, the second diffusion layer includes a plurality of diffusion units, the diffusion units correspond to the light-shielding units one-to-one, and the orthographic projections of the diffusion units on the light-shielding layer are located within or overlap with the corresponding light-shielding units.

[0012] Optionally, a plurality of positioning holes are provided on a side of the first diffusion layer away from the base substrate, the diffusion unit is at least partially buried in the positioning holes, the positioning holes have opposite bottom surfaces and side surfaces, and the side surfaces are conical surfaces or arc surfaces convex outward.

[0013] Optionally, the display panel also includes an encapsulation layer, which is formed between the light-shielding layer and the light-emitting layer. The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer. The first diffusion layer is the organic encapsulation layer, and the second diffusion layer is located between the organic encapsulation layer and the second inorganic encapsulation layer or on the side of the second inorganic encapsulation layer away from the base substrate.

[0014] Optionally, the display panel also includes an encapsulation layer, which is formed between the light-shielding layer and the light-emitting layer. The diffusion layer is the encapsulation layer, and the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer. The refractive indices of the first inorganic encapsulation layer, the organic encapsulation layer and the second inorganic encapsulation layer decrease successively.

[0015] Optionally, the display panel further includes a light-gathering layer, the light-gathering layer includes a plurality of light-gathering units, the orthographic projections of the display sub-pixels on the light-gathering layer are located within the light-gathering units, and the light-gathering layer is located on a side of the first inorganic encapsulation layer away from or close to the base substrate.

[0016] Optionally, the display panel further includes a first anode layer, a pixel definition layer, a second anode layer and a cathode layer, wherein the first anode layer, the pixel definition layer, the second anode layer, the light emitting layer and the cathode layer are sequentially formed on the base substrate;

[0017] The first anode layer includes a plurality of first anodes arranged at intervals, the pixel definition layer has vias, the second anode layer includes a plurality of second anodes, the second anodes are located between adjacent vias, the display sub-pixels are located in the vias and connected to the first anodes, the anti-peep sub-pixels are located on the side of the second anode away from the base substrate, the focusing layer is located on the side of the first inorganic encapsulation layer close to the base substrate, and the focusing unit is at least partially located in the vias.

[0018] Optionally, the display panel further includes an encapsulation layer and a color resist layer, wherein the encapsulation layer is formed between the light shielding layer and the light emitting layer, and the color resist layer is formed on a side of the encapsulation layer away from the base substrate;

[0019] The color resist layer includes a plurality of color resists, and the orthographic projection of the display sub-pixel on the color resist layer is located within the color resist. The light shielding layer also includes a black matrix, and the black matrix and the light shielding unit are arranged in the same layer, and the black matrix is ​​arranged around the color resist.

[0020] The present application also provides a display device, comprising:

[0021] Display panel;

[0022] A mainboard is connected to the display panel.

[0023] The display panel and display device disclosed in this application have the following beneficial effects:

[0024] In the present application, the display panel includes a base substrate, a light-emitting layer, a diffusion layer and a shading layer formed in sequence. The light-emitting layer includes display sub-pixels and anti-peeping sub-pixels. The first part of the light of the anti-peeping sub-pixels is blocked by the shading unit of the shading layer, and the second part of the light of the anti-peeping sub-pixels is emitted from around the shading unit. The diffusion layer can diffuse the second part of the light in a direction away from the shading unit to increase the anti-peeping angle of the display panel. This design can reduce the size of the shading unit, thereby reducing the aperture ratio loss of the display panel.

[0025] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0028] Figure 1 It is a structural diagram of the display panel in Example 1 of the present application.

[0029] Figure 2 This is a schematic diagram of the anti-peeping principle of the display panel in Example 1 of the present application.

[0030] Figure 3 It is a structural diagram of the display panel in the second embodiment of the present application.

[0031] Figure 4 It is a structural diagram of the display panel in Example 3 of the present application.

[0032] Figure 5 This is a schematic diagram of the anti-peeping principle of the display panel in Example 3 of the present application.

[0033] Figure 6 It is a structural diagram of the display device in Example 4 of the present application.

[0034] Description of reference numerals:

[0035] 100, base substrate; 200, driving circuit layer;

[0036] 310, first anode layer; 311, first anode; 320, pixel definition layer; 330, light-emitting layer; 331, display sub-pixel; 332, anti-peep sub-pixel; 340, cathode layer; 350, encapsulation layer; 351, first inorganic encapsulation layer; 352, organic encapsulation layer; 353, second inorganic encapsulation layer; 360, light-shielding layer; 361, light-shielding unit; 370, color-resist layer; 380, anti-reflection layer; 390, diffusion layer; 391, first diffusion layer; 3911, hole side surface; 392, second diffusion layer; 3921, diffusion unit; 400, second anode layer; 401, second anode; 410, light-collecting layer; 411, light-collecting unit;

[0037] 10. Display panel; 20. Main board. DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0039] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0040] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0041] Example 1

[0042] See also Figure 1 and Figure 2 As shown, in this embodiment, the display panel includes a base substrate 100, a driving circuit layer 200, a first anode layer 310, a pixel definition layer 320, a light-emitting layer 330, a cathode layer 340, and a light-shielding layer 360, which are formed in sequence. The base substrate 100 includes a glass substrate or a polyimide (Pi) substrate. The first anode layer 310 includes a plurality of first anodes 311 and a plurality of second anodes 401, which are arranged in the same layer as the first anodes 311. Adjacent second anodes 401 are spaced apart or at least some of the second anodes 401 are connected.

[0043] The light-emitting layer 330 includes a plurality of display sub-pixels 331 and at least one anti-peeping sub-pixel 332. For example, the light-emitting layer 330 includes a plurality of pixel units, each of which includes a red display sub-pixel 331, a green display sub-pixel 331, a blue display sub-pixel 331, and an anti-peeping sub-pixel 332. The anti-peeping sub-pixel 332 can be red, blue, green, yellow, or white sub-pixels. The yellow sub-pixel can be formed by stacking a red organic light-emitting material and a green organic light-emitting material, and the white sub-pixel can be formed by stacking a red organic light-emitting material, a green organic light-emitting material, and a blue organic light-emitting material.

[0044] The light-shielding layer 360 includes a light-shielding unit 361, which corresponds one-to-one to the anti-peeping sub-pixel 332. The orthographic projection of the anti-peeping sub-pixel 332 on the light-shielding layer 360 is located within the light-shielding unit 361. The first part of the light of the anti-peeping sub-pixel 332 is blocked by the light-shielding unit 361, and the second part of the light of the anti-peeping sub-pixel 332 is emitted from around the light-shielding unit 361.

[0045] The display panel further includes a diffusion layer 390 , which is formed between the cathode layer 340 and the light shielding layer 360 and is at least configured to diffuse the second portion of light in a direction away from the light shielding unit 361 .

[0046] The display panel has an anti-peeping mode. When the anti-peeping mode is off, the display sub-pixel 331 displays normally, and the anti-peeping sub-pixel 332 is off. The display panel can display clearly when viewed straight on or at an angle. When the anti-peeping mode is on, the anti-peeping sub-pixel 332 is turned on, and the forward light output of the anti-peeping sub-pixel 332 is blocked by the shading unit 361. The forward light output of the display sub-pixel 331 is not disturbed, and the display panel can display clearly when viewed straight on; the oblique light output of the anti-peeping sub-pixel 332 is not blocked by the shading unit 361. The oblique light output of the display sub-pixel 331 will mix with the oblique light output of the anti-peeping sub-pixel 332. The display panel cannot display clearly when viewed at an angle, thereby achieving the anti-peeping function. To achieve large-angle anti-peeping on the display panel, the shading unit 361 needs to be made larger, resulting in an increase in the aperture loss of the display panel.

[0047] In the present application, the display panel includes a base substrate 100, a driving circuit layer 200, a first anode layer 310, a pixel definition layer 320, a light-emitting layer 330, a cathode layer 340, a diffusion layer 390 and a light-shielding layer 360 formed in sequence. The light-emitting layer 330 includes a display sub-pixel 331 and an anti-peeping sub-pixel 332. The first part of the light of the anti-peeping sub-pixel 332 is blocked by the light-shielding unit 361 of the light-shielding layer 360, and the second part of the light of the anti-peeping sub-pixel 332 is emitted from around the light-shielding unit 361. The diffusion layer 390 can diffuse the second part of the light in a direction away from the light-shielding unit 361 to increase the anti-peeping angle of the display panel. This design can reduce the size of the light-shielding unit 361, thereby reducing the aperture loss of the display panel.

[0048] In addition, in a display panel without a diffusion layer 390, the first portion of light from the anti-peeping sub-pixel 332 is blocked and absorbed by the shading unit 361 of the shading layer 360, and the light utilization rate of the anti-peeping sub-pixel 332 is low. In the present application, by setting a diffusion layer 390, at least part of the first portion of light is diffused to the surrounding of the shading unit 361 and emitted, thereby improving the low light utilization rate of the anti-peeping sub-pixel 332 and further improving the anti-peeping effect of the display panel.

[0049] For example, the diffusion layer 390 includes a first diffusion layer 391 and a second diffusion layer 392. The first diffusion layer 391 is formed between the cathode layer 340 and the light shielding layer 360. The second diffusion layer 392 is formed on the side of the first diffusion layer 391 away from the base substrate 100. The refractive index of the first diffusion layer 391 is greater than the refractive index of the second diffusion layer 392.

[0050] When the refractive index of the first diffusion layer 391 is greater than the refractive index of the second diffusion layer 392, light from the anti-peep sub-pixel 332 will diffuse in a direction away from the corresponding light shielding unit 361 when passing through the first diffusion layer 391 and the second diffusion layer 392. In this way, the size of the light shielding unit 361 can be designed to be smaller, thereby reducing the aperture ratio loss of the display panel.

[0051] In addition, the first diffusion layer 391 and the second diffusion layer 392 are additional film layers, so that the material selection of the first diffusion layer 391 and the second diffusion layer 392 is more flexible.

[0052] See also Figure 1 and Figure 2 As shown, the second diffusion layer 392 includes a plurality of diffusion units 3921, each corresponding to a light shielding unit 361. The orthographic projection of each diffusion unit 3921 on the light shielding layer 360 is located within or overlaps with the corresponding light shielding unit 361. The first diffusion layer 391 may be a full-surface film layer.

[0053] It should be noted that the first diffusion layer 391 can be a full-surface film layer, but is not limited to this. The first diffusion layer 391 can also be a partial film layer, with the first diffusion layer 391 being disposed only below the diffusion unit 3921 near the base substrate 100, depending on the specific circumstances. The orthographic projection of the diffusion unit 3921 on the light shielding layer 360 is located within or overlaps with the corresponding light shielding unit 361, but is not limited to this. The diffusion unit 3921 can also be slightly larger than the light shielding unit 361, so as to only affect the light of the display sub-pixel 331, depending on the specific circumstances.

[0054] The orthographic projection of the diffusion unit 3921 on the light-shielding layer 360 is located within or overlaps with the corresponding light-shielding unit 361. That is, the light from the anti-peep sub-pixel 332 will pass through the first diffusion layer 391 and the second diffusion layer 392 in sequence and diffuse in a direction deviating from the corresponding light-shielding unit 361, while the light from the display sub-pixel 331 will not pass through the second diffusion layer 392. That is, the light from the display sub-pixel 331 is not affected by the diffusion layer 390, thereby ensuring the display effect of the display panel.

[0055] See also Figure 1 and Figure 2As shown, the first diffusion layer 391 is provided with a plurality of positioning holes on the side away from the base substrate 100, and the diffusion unit 3921 is at least partially buried in the positioning hole. The positioning hole has a relative hole bottom surface and a hole side surface 3911, the hole side surface 3911 is a conical surface or an arc surface protruding outward, and the hole bottom surface is a plane or an arc surface recessed toward the shading unit 361.

[0056] When the side surface 3911 of the positioning hole is a conical surface or an outwardly convex curved surface, the outer side surface of the diffusion unit 3921 corresponding to the side surface 3911 is also a conical surface or an outwardly convex curved surface. When light from the anti-peeping sub-pixel 332 hits the outer side surface of the diffusion unit 3921, it is totally reflected, thereby increasing the anti-peeping angle of the display panel. This design can reduce the size of the light shielding unit 361, thereby reducing the loss of the display panel's aperture ratio. At the same time, when light from the display sub-pixel 331 hits the outer side surface of the diffusion unit 3921, it can pass through the diffusion unit 3921 and be blocked by the light shielding unit 361.

[0057] When the bottom surface of the positioning hole is a flat surface or an arcuate surface that is recessed toward the light shielding unit 361, the bottom surface of the diffusion unit 3921 corresponding to the bottom surface of the hole is also a conical surface or an outwardly convex arcuate surface. When light from the display sub-pixel 331 hits the bottom surface of the diffusion unit 3921, it can pass through the diffusion unit 3921 and be blocked and absorbed by the light shielding unit 361. In other words, by adjusting the shape of the bottom surface of the diffusion unit 3921, total internal reflection of light from the display sub-pixel 331 can be avoided when it strikes the diffusion unit 3921, thereby reflecting the light from the display sub-pixel 331 toward the base substrate 100.

[0058] See also Figure 1 and Figure 2 As shown, the display panel further includes an encapsulation layer 350, which is formed between the cathode layer 340 and the light shielding layer 360. The encapsulation layer 350 includes a first inorganic encapsulation layer 351, an organic encapsulation layer 352, and a second inorganic encapsulation layer 353. The first inorganic encapsulation layer 351 is formed on the side of the cathode layer 340 away from the base substrate 100, the organic encapsulation layer 352 is formed on the side of the first inorganic encapsulation layer 351 away from the base substrate 100, and the second inorganic encapsulation layer 353 is formed on the side of the organic encapsulation layer 352 away from the base substrate 100.

[0059] The encapsulation layer 350 is formed between the cathode layer 340 and the light shielding layer 360 to prevent the organic light-emitting material-based light-emitting layer 330 from being infiltrated by water and oxygen, which could lead to its failure. The light shielding unit 361 is formed on the side of the encapsulation layer 350 away from the base substrate 100. This increases the distance between the light shielding unit 361 and the anti-peeping sub-pixel 332, facilitating alignment of the light shielding unit 361 and the anti-peeping sub-pixel 332 and adjusting the privacy protection angle.

[0060] See also Figure 1 and Figure 2As shown, the display panel further includes a color resist layer 370, which is formed on the side of the encapsulation layer 350 away from the base substrate 100. The color resist layer 370 includes red, green, and blue color resists. The orthographic projection of the red display sub-pixel 331 on the color resist layer 370 is located within the red color resist, the orthographic projection of the green display sub-pixel 331 on the color resist layer 370 is located within the green color resist, and the orthographic projection of the blue display sub-pixel 331 on the color resist layer 370 is located within the blue color resist. The light shielding layer 360 further includes a black matrix, which is provided in the same layer as the light shielding unit 361, and the black matrix is ​​provided around the red, green, and blue color resists.

[0061] The black matrix and the light shielding unit 361 are arranged in the same layer, which can reduce the manufacturing cost of the display panel.

[0062] It should be noted that the black matrix and the shading unit 361 are arranged in the same layer and can both be formed of black shading material, but are not limited to this. The black matrix and the shading unit 361 can also be replaced by a stack of red color resist and blue color resist. Such a design can simplify the process of manufacturing the display panel, thereby reducing production costs.

[0063] The display panel further includes an anti-reflection layer 380 , which is formed on a side of the color resist layer 370 away from the base substrate 100 .

[0064] To improve the contrast of the display device and achieve a black effect, OLED display panels typically use polarizers (POLs). Polarizers can effectively reduce the intensity of ambient light reflected on the screen. However, the light transmittance of polarizers is generally only around 44%, and to achieve higher light output, more power is required. In addition, polarizers are thick and brittle, which is not conducive to the development of dynamic bending products.

[0065] This application adopts a structure of color resist, black matrix and anti-reflection layer 380. Red color resist, green color resist and blue color resist filter light, the black matrix is ​​set around the color resist to block light, and the anti-reflection layer 380 reduces the reflection intensity of external ambient light on the screen. The polarizer of the OLED display panel can be eliminated. Not only will the thickness of the functional layer be greatly reduced, but the light output rate can also be increased from 44% to 80%, greatly increasing the light output brightness, thereby reducing the power consumption of the OLED display panel.

[0066] Example 2

[0067] The difference between the second embodiment and the first embodiment is that the first diffusion layer 391 and the second diffusion layer 392 in the first embodiment are both additional film layers, while the first diffusion layer 391 and the organic encapsulation layer 352 share a common layer in the second embodiment.

[0068] See also Figure 3As shown, the first diffusion layer 391 is the organic encapsulation layer 352, and the second diffusion layer 392 is located between the organic encapsulation layer 352 and the second inorganic encapsulation layer 353. The thickness of the first inorganic encapsulation layer 351 is 0.5 microns to 2 microns, the thickness of the organic encapsulation layer 352 is 4 microns to 20 microns, and the thickness of the second inorganic encapsulation layer 353 is 0.5 microns to 2 microns.

[0069] It should be noted that the second diffusion layer 392 is located between the organic encapsulation layer 352 and the second inorganic encapsulation layer 353, but is not limited to this. Since the second inorganic encapsulation layer 353 is relatively thin, the second diffusion layer 392 can also be arranged on the side of the second inorganic encapsulation layer 353 away from the base substrate 100, depending on the specific situation.

[0070] The first diffusion layer 391 is the organic encapsulation layer 352 , that is, the first diffusion layer 391 and the organic encapsulation layer 352 share a common layer. This design can reduce the thickness of the display panel and the manufacturing cost of the display panel.

[0071] Example 3

[0072] See also Figure 4 and Figure 5 As shown, the main difference between the third embodiment and the first embodiment is that the diffusion layer 390 in the first embodiment is an additional film layer, while the diffusion layer 390 in the third embodiment is the encapsulation layer 350 .

[0073] The display panel includes an encapsulation layer 350, which is formed between the cathode layer 340 and the light shielding layer 360. The encapsulation layer 350 includes a first inorganic encapsulation layer 351, an organic encapsulation layer 352, and a second inorganic encapsulation layer 353. The first inorganic encapsulation layer 351 is formed on the side of the cathode layer 340 away from the base substrate 100, the organic encapsulation layer 352 is formed on the side of the first inorganic encapsulation layer 351 away from the base substrate 100, and the second inorganic encapsulation layer 353 is formed on the side of the organic encapsulation layer 352 away from the base substrate 100.

[0074] In this embodiment, the refractive indices of the first inorganic encapsulation layer 351 , the organic encapsulation layer 352 , and the second inorganic encapsulation layer 353 decrease in sequence.

[0075] In this embodiment, the diffusion layer 390 is the encapsulation layer 350. By configuring the refractive indices of the first inorganic encapsulation layer 351, the organic encapsulation layer 352 and the second inorganic encapsulation layer 353 to decrease in sequence, part of the light of the anti-peep sub-pixel 332 is diffused in a direction deviating from the shading unit 361, so as to increase the anti-peep angle of the display panel. This design can reduce the size of the shading unit 361, thereby reducing the aperture ratio loss of the display panel.

[0076] See also Figure 4 and Figure 5As shown, the display panel further includes a light-gathering layer 410, which includes a plurality of light-gathering units 411. The orthographic projections of the display sub-pixels 331 on the light-gathering layer 410 are located within the light-gathering units 411. The light-gathering layer 410 is located on the side of the first inorganic encapsulation layer 351 that is away from or close to the base substrate 100. The light-gathering units 411 are used to converge light from the display sub-pixels 331. The refractive index of the light-gathering units 411 is less than the refractive index of the first inorganic encapsulation layer 351, or the light-gathering units 411 are microlenses.

[0077] Because the encapsulation layer 350 is a full-surface film layer, when diffusing the light from the privacy-prevention sub-pixel 332, it also diffuses the light from the display sub-pixel 331, thereby affecting the display quality. By providing a focusing unit 411 on the light-emitting side of the display sub-pixel 331, the light from the display sub-pixel 331 is first focused before being diffused. This reduces or eliminates the effect of the encapsulation layer 350 on the light from the display sub-pixel 331, ensuring the display quality of the display panel.

[0078] In some embodiments, the display panel further includes a second anode layer 400, which is formed between the pixel definition layer 320 and the light-emitting layer 330. The second anode layer 400 includes a plurality of second anodes 401. The pixel definition layer 320 has vias connected to the first anodes 311, and the second anodes 401 are located in the area between adjacent vias. The display sub-pixels 331 are located in the vias and connected to the first anodes 311. The anti-peep sub-pixels 332 are located on the side of the second anodes 401 away from the base substrate 100. The light-gathering layer 410 is located on the side of the first inorganic encapsulation layer 351 close to the base substrate 100, and the light-gathering unit 411 is at least partially located in the vias.

[0079] The display sub-pixel 331 is located in the via hole and connected to the first anode 311, and the anti-peeping sub-pixel 332 is located on the side of the second anode 401 away from the base substrate 100. That is, compared with the anti-peeping sub-pixel 332, the display sub-pixel 331 is farther from the light-shielding layer 360. With this design, the focusing unit 411 and the anti-peeping sub-pixel 332 can be designed to be at the same height or closer to the base substrate 100, thereby preventing the focusing unit 411 from affecting the light of the anti-peeping sub-pixel 332.

[0080] In addition, the anti-peeping sub-pixel 332 is located in the area between the two via holes, which does not affect the design space of the display sub-pixel 331. Compared with the display panel without the anti-peeping sub-pixel 332, the aperture ratio of the display panel in this embodiment is not lost.

[0081] Example 4

[0082] This application also provides a display device, see Figure 6As shown, the display device includes a display panel 10 and a mainboard 20. The mainboard 20 is connected to the display panel 10 and is used to drive the display panel 10 to display images. The display panel 10 includes the display panel 10 disclosed in the first to third embodiments.

[0083] The display device includes a display panel 10, which includes a base substrate 100, a driving circuit layer 200, a first anode layer 310, a pixel definition layer 320, a light-emitting layer 330, a cathode layer 340, a diffusion layer 390 and a light-shielding layer 360 formed in sequence. The light-emitting layer 330 includes a display sub-pixel 331 and an anti-peeping sub-pixel 332. A first portion of light from the anti-peeping sub-pixel 332 is blocked by a light-shielding unit 361 of the light-shielding layer 360, and a second portion of light from the anti-peeping sub-pixel 332 is emitted from around the light-shielding unit 361. The diffusion layer 390 can diffuse the second portion of light in a direction away from the light-shielding unit 361 to increase the anti-peeping angle of the display panel 10. This design can reduce the size of the light-shielding unit 361, thereby reducing the aperture ratio loss of the display panel 10.

[0084] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0085] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0086] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0087] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A display panel comprising a base substrate, characterized in that: The display panel further includes: A light-emitting layer is formed on one side of the base substrate, and the light-emitting layer includes a plurality of display sub-pixels and at least one anti-peeping sub-pixel; a light shielding layer formed on a side of the light-emitting layer away from the base substrate, the light shielding layer including light shielding units, the light shielding units corresponding one-to-one to the anti-peeping sub-pixels, the orthographic projections of the anti-peeping sub-pixels on the light shielding layer correspondingly located within the light shielding units, a first portion of light from the anti-peeping sub-pixels being blocked by the light shielding units, and a second portion of light from the anti-peeping sub-pixels being emitted from around the light shielding units; a diffusion layer, formed between the light-emitting layer and the light-shielding layer, and configured to diffuse the second portion of light in a direction away from the light-shielding unit; Wherein, the diffusion layer includes a first diffusion layer and a second diffusion layer, the first diffusion layer is formed between the light-emitting layer and the light-shielding layer, the second diffusion layer is formed on the side of the first diffusion layer away from the base substrate, the refractive index of the first diffusion layer is greater than the refractive index of the second diffusion layer, the second diffusion layer includes a plurality of diffusion units, the diffusion units correspond to the light-shielding units one-to-one, the orthographic projections of the diffusion units on the light-shielding layer are located within or coincide with the corresponding light-shielding units, a plurality of positioning holes are provided on the side of the first diffusion layer away from the base substrate, the diffusion units are at least partially buried in the positioning holes, the positioning holes have relative hole bottom surfaces and hole side surfaces, the hole side surfaces are conical surfaces or outwardly convex arc surfaces, and the outer side surfaces of the diffusion units corresponding to the hole side surfaces are configured such that when part of the light of the anti-peep sub-pixel hits the outer side surface, it is totally reflected and diffuses in a direction away from the light-shielding unit; or The display panel also includes an encapsulation layer, which is formed between the light-shielding layer and the light-emitting layer. The diffusion layer is the encapsulation layer. The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. The refractive indices of the first inorganic encapsulation layer, the organic encapsulation layer, and the second inorganic encapsulation layer decrease in sequence. The display panel also includes a light-gathering layer, which includes a plurality of light-gathering units. The orthographic projection of the display sub-pixel on the light-gathering layer is located within the light-gathering unit. The light-gathering layer is located on the side of the first inorganic encapsulation layer away from or close to the base substrate.

2. The display panel according to claim 1, wherein: When the diffusion layer includes a first diffusion layer and a second diffusion layer, the display panel further includes an encapsulation layer, the encapsulation layer is formed between the light-shielding layer and the light-emitting layer, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, the first diffusion layer is the organic encapsulation layer, and the second diffusion layer is located between the organic encapsulation layer and the second inorganic encapsulation layer or on the side of the second inorganic encapsulation layer away from the base substrate.

3. The display panel according to claim 1, wherein: When the diffusion layer is an encapsulation layer, the display panel further includes a first anode layer, a pixel definition layer, a second anode layer and a cathode layer, wherein the first anode layer, the pixel definition layer, the second anode layer, the light emitting layer and the cathode layer are sequentially formed on the base substrate; The first anode layer includes a plurality of first anodes arranged at intervals, the pixel definition layer has vias, the second anode layer includes a plurality of second anodes, the second anodes are located between adjacent vias, the display sub-pixels are located in the vias and connected to the first anodes, the anti-peep sub-pixels are located on the side of the second anode away from the base substrate, the focusing layer is located on the side of the first inorganic encapsulation layer close to the base substrate, and the focusing unit is at least partially located in the vias.

4. The display panel according to claim 1, wherein: The display panel further includes a color resist layer, and the color resist layer is formed on a side of the encapsulation layer away from the base substrate; The color resist layer includes a plurality of color resists, and the orthographic projection of the display sub-pixel on the color resist layer is located within the color resist. The light shielding layer also includes a black matrix, and the black matrix and the light shielding unit are arranged in the same layer, and the black matrix is ​​arranged around the color resist.

5. A display device, characterized in that: include: The display panel according to any one of claims 1 to 4; A mainboard is connected to the display panel.

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