Display panel and display device

Abstract

The invention provides a display panel and a display device, sub-pixels in the display panel comprise first sub-pixels and second sub-pixels which are the same in light emitting color, and the maximum light emitting view angle of the first sub-pixels is smaller than the maximum light emitting view angle of the second sub-pixels; the display modes of the display panel comprise a shared display mode and a peep-proof display mode; in the shared display mode, the first sub-pixels and the second sub-pixels emit light; in the peep-proof display mode, the first sub-pixels emit light, and the second sub-pixels do not emit light; a first micro-cavity structure is formed by the first anode and the first cathode in the first sub-pixel, and a second micro-cavity structure is formed by the second anode and the second cathode in the second sub-pixel; the distance between the first anode and the first cathode is L1, and the distance between part of the second anode and at least part of the second cathode is L2; the light-emitting wavelength of the first sub-pixel is lambda1, and the light-emitting wavelength of the second sub-pixel is lambda2; l1 = n * (lambda1 / 2), and L2 is not equal to m * (lambda2 / 2). The display uniformity of the display panel is ensured by adjusting the distances of the micro-cavity structures of different light-emitting elements to be different.

Description

A display panel and display device Technical Field

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

[0002] With the continuous development of display technology, display panels have been widely used in people's production and daily life.

[0003] Furthermore, the display panel includes various light-emitting elements to achieve different display states, such as sharing mode and privacy mode. However, with prolonged use, different light-emitting elements may develop various problems, thus affecting the overall display performance. Summary of the Invention

[0004] This application provides a display panel and a display device. The display panel ensures display uniformity by adjusting the distance between the microcavity structures of different light-emitting elements.

[0005] In a first aspect, embodiments of this application provide a display panel, including a substrate and a plurality of sub-pixels located on one side of the substrate; the plurality of sub-pixels include a first sub-pixel and a second sub-pixel that emit light of the same color, wherein the maximum light emission angle of the first sub-pixel is smaller than the maximum light emission angle of the second sub-pixel; the display mode of the display panel includes a shared display mode and a privacy display mode; in the shared display mode, both the first sub-pixel and the second sub-pixel emit light; in the privacy display mode, the first sub-pixel emits light, and the second sub-pixel does not emit light; the first sub-pixel includes a first anode and a first cathode, the first anode and the first cathode forming a first microcavity structure, the second sub-pixel includes a second anode and a second cathode, the second anode and the second cathode forming a second microcavity structure; along a first direction, the distance between the first anode and the first cathode is L1, and the distance between at least a portion of the second anode and at least a portion of the second cathode is L2; ​​the first direction is the thickness direction of the display panel; the emission wavelength of the first sub-pixel is λ1, and the emission wavelength of the second sub-pixel is λ2; wherein, L1=n×(λ1 / 2), L2≠m×(λ2 / 2), where n and m are both positive integers.

[0006] Secondly, embodiments of this application provide a display device including the display panel described in the first aspect.

[0007] In summary, this application provides a display panel comprising multiple sub-pixels, including a first sub-pixel and a second sub-pixel with the same emission color. The maximum emission angle of the first sub-pixel is smaller than that of the second sub-pixel. By controlling the emission of the first and second sub-pixels, different display modes of the display panel can be achieved. Specifically, the display modes of the display panel include a shared display mode and a privacy display mode. In the shared display mode, both the first and second sub-pixels emit light; in the privacy display mode, the first sub-pixel emits light, and the second sub-pixel does not emit light. Furthermore, the first anode and the first cathode in the first sub-pixel form a first microcavity structure, and the distance between the first anode and the first cathode along the first direction is L1, where L1 = n × (λ1 / 2), and λ1 is the emission wavelength of the first sub-pixel. That is, the distance of the first microcavity structure along the first direction satisfies a half-integer multiple of the emission wavelength of the first sub-pixel, which can form a strong microcavity structure. The strong microcavity structure enhances the emission brightness at small viewing angles or normal viewing angles, thereby ensuring the emission effect of the first sub-pixel at small viewing angles. In the second sub-pixel, the second anode and the second cathode form a second microcavity structure. Along the first direction, the distance between at least a portion of the second anode and at least a portion of the second cathode is L2, where L2 ≠ m × (λ2 / 2), and λ2 is the emission wavelength of the second sub-pixel. This means that the distance of the second microcavity structure along the first direction does not satisfy a half-integer multiple of the emission wavelength of the second sub-pixel, thus forming a weak microcavity structure. This allows light rays that would otherwise be rejected in a strong microcavity structure to resonate and be output in the weak microcavity structure, thereby increasing the brightness of the emitted light from a wide viewing angle and ensuring the light emission effect of the second sub-pixel at wide viewing angles. By combining the microcavity modulation of the first and second sub-pixels, the light emission effect of the display panel at wide viewing angles and low light emission effect at narrow viewing angles can be guaranteed, thereby improving the overall display effect of the display panel. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0009] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of this application; Figure 2 is a cross-sectional schematic diagram along section line A-A' in Figure 1; Figure 3 is a structural schematic diagram of another display panel provided in an embodiment of this application; Figure 4 is a cross-sectional schematic diagram along section line B-B' in Figure 3; Figure 5 is a cross-sectional schematic diagram along section line C-C' in Figure 1; Figure 6 is a schematic diagram of the viewing angle brightness and light emission angle of a sub-pixel provided in this application; Figure 7 is an enlarged schematic diagram of a first sub-pixel provided in this application; Figure 8 is an enlarged schematic diagram of a second sub-pixel provided in this application; Figure 9 is an enlarged schematic diagram of another first sub-pixel provided in this application; Figure 10 is an enlarged schematic diagram of another second sub-pixel provided in this application; Figure 11 is a schematic diagram of another first sub-pixel provided in this application. Figure 12 is an enlarged schematic diagram of another second sub-pixel provided in this application; Figure 13 is a cross-sectional schematic diagram along section line D-D' in Figure 1; Figure 14 is a cross-sectional schematic diagram along section line E-E' in Figure 1; Figure 15 is a cross-sectional schematic diagram along section line F-F' in Figure 3; Figure 16 is a schematic diagram of the connection between a first pixel circuit and a first sub-pixel and a second sub-pixel provided in an embodiment of this application; Figure 17 is another cross-sectional schematic diagram along section line B-B' in Figure 3; Figure 18 is a structural schematic diagram of yet another display panel provided in an embodiment of this application; Figure 19 is another cross-sectional schematic diagram along section line B-B' in Figure 3; Figure 20 is a structural schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0010] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0011] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0012] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0013] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0014] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of this application. Figure 2 is a cross-sectional schematic diagram along section line A-A' in Figure 1. Figure 3 is a structural schematic diagram of another display panel provided in an embodiment of this application. Figure 4 is a cross-sectional schematic diagram along section line B-B' in Figure 3. Figure 5 is a cross-sectional schematic diagram along section line C-C' in Figure 1. Referring to Figures 1 to 5, an embodiment of this application provides a display panel 10, which includes a substrate 100 and a plurality of sub-pixels 200 located on one side of the substrate 100. The plurality of sub-pixels 200 includes a first sub-pixel 200a and a second sub-pixel 200b with the same emission color. The maximum light emission angle of the first sub-pixel 200a is smaller than that of the second sub-pixel 200b. The display modes of the display panel 10 include a shared display mode and a privacy display mode. In the shared display mode, the first sub-pixel 200a and the second sub-pixel 200b... Both sub-pixels 200b emit light; in privacy display mode, the first sub-pixel 200a emits light, while the second sub-pixel 200b does not emit light; the first sub-pixel 200a includes a first anode 211 and a first cathode 212, which form a first microcavity structure; the second sub-pixel 200b includes a second anode 221 and a second cathode 222, which form a second microcavity structure; along the first direction X1, the distance between the first anode 211 and the first cathode 212 is L1, and the distance between at least a portion of the second anode 221 and at least a portion of the second cathode 222 is L2; ​​the first direction X1 is the thickness direction of the display panel 10; the emission wavelength of the first sub-pixel 200a is λ1, and the emission wavelength of the second sub-pixel 200b is λ2; where L1 = n × (λ1 / 2), L2 ≠ m × (λ2 / 2), and n and m are both positive integers.

[0015] Referring to Figures 1 to 5, the display panel 10 includes a substrate 100 and a plurality of sub-pixels 200 located on one side of the substrate 100. The sub-pixels 200 may include sub-pixels of different colors, such as at least one of red, green, blue, or white sub-pixels. Furthermore, the sub-pixels 200 may be one of organic light-emitting diodes (OLEDs), micro-OLEDs, or micro-LEDs. Taking the example of an organic light-emitting diode in Figures 1 to 5, the sub-pixel 200 may include an anode, a cathode, and a light-emitting structure located between the anode and cathode. The light-emitting structure may include multiple layers of light-emitting material, specifically a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, an electron transport layer, a hole blocking layer, and an electron injection layer, but is not limited to these. Alternatively, the light-emitting structure may also include a charge-generating layer, such as a P-type charge-generating layer and an N-type charge-generating layer. When a voltage is applied to the anode and cathode of the organic light-emitting diode, holes passing through the hole transport layer and electrons passing through the electron transport layer move to the light-emitting layer to form excitons, causing visible light to be emitted from the light-emitting layer, thereby realizing the display function of the display panel 10. Optionally, referring to Figures 2, 4 and 5, the display panel 10 also includes an array substrate layer 101 located on one side of the substrate 100. The array substrate layer 101 includes the circuit structure of the sub-pixel 200 (not specifically shown in the figures). The circuit structure provides electrical signals to the light-emitting elements (not specifically shown in the figures) of the sub-pixel 200 to realize the light emission of the light-emitting elements.

[0016] Furthermore, referring to Figures 1 and 3, the sub-pixel 200 includes a first sub-pixel 200a and a second sub-pixel 200b with different light emission angles, wherein the maximum light emission angle of the first sub-pixel 200a is smaller than the maximum light emission angle of the second sub-pixel 200b.

[0017] Specifically, referring to Figures 2, 4, and 5, the display panel 10 further includes a pixel definition layer 102. The pixel definition layer 102 has multiple pixel openings, which can be used to define the light-emitting area of ​​the sub-pixels 200. The sub-pixels 200 include a first sub-pixel 200a and a second sub-pixel 200b. Correspondingly, referring to Figure 2, the pixel definition layer 102 includes a first pixel opening 102a and a second pixel opening 102b. At least a portion of the first sub-pixel 200a is located within the first pixel opening 102a, meaning at least a portion of the film structure in the first sub-pixel 200a is located within the first pixel opening 102a. The first pixel opening 102a can define at least a portion of the light-emitting area of ​​the first sub-pixel 200a. Similarly, at least a portion of the second sub-pixel 200b is located within the second pixel opening 102b, meaning at least a portion of the film structure in the second sub-pixel 200b is located within the second pixel opening 102b. The second pixel opening 102b can define at least a portion of the light-emitting area of ​​the second sub-pixel 200b. By setting a pixel definition layer 102 and a pixel opening, the display panel 10 defines at least part of the light-emitting area and at least part of the light-emitting film layer of the sub-pixel 200, thereby reducing crosstalk between sub-pixels 200 of different colors and improving the light-emitting contrast between sub-pixels 200.

[0018] Furthermore, referring to Figures 2, 4, and 5, the display panel 10 also includes a light emission adjustment structure 300 located on the light-emitting side of the sub-pixel 200. The light emission adjustment structure 300 includes a light-shielding layer 310, which can block the transmission of light. Therefore, the arrangement of the light-shielding layer 310 can adjust the light emission angle of the sub-pixel 200 that overlaps with the light-shielding layer 310. Figures 2, 4, and 5 illustrate this by showing the display panel 10 including multiple light-shielding layers 310. The display panel 10 includes a first light-shielding layer 311 and a second light-shielding layer 312. The number of film layers in the specific light-shielding layer 310 can be adaptively adjusted according to actual needs. Specifically, the light-shielding layer 310 includes a light-shielding opening 320, which at least partially overlaps with the first sub-pixel 200a. At least a portion of the light generated by the first sub-pixel 200a can be emitted from the light-shielding opening 320. Specifically, referring to Figures 2, 4 and 5, the orthographic projection of the light-shielding opening 320 onto the substrate 100 overlaps with the orthographic projection of the central region of the first sub-pixel 200a onto the substrate 100. Thus, at least a portion of the orthographic light rays generated by the first sub-pixel 200a, or the small-angle light rays, can be emitted from the light-shielding opening 320. In other words, the light-shielding layer 310 can adjust the emission angle of the maximum light emission angle of the first sub-pixel 200a.

[0019] Referring to Figures 2 and 5, the minimum distance between the light-shielding layer 310 on the light-emitting side of the second sub-pixel 200b and the second pixel opening 102b in the second direction X2 is relatively large. Therefore, the light emitted by the second sub-pixel 200b in the forward or narrow angle direction is blocked by the light-shielding layer 310. However, the light-shielding layer 310 blocks less light from the second sub-pixel 200b in the wide angle direction. Thus, the second sub-pixel 200b can achieve a wider light emission angle than the first sub-pixel 200a, resulting in the maximum light emission angle of the first sub-pixel 200a being smaller than that of the second sub-pixel 200b. In this case, the first sub-pixel 200a can be understood as a privacy pixel, and the second sub-pixel 200b can be understood as a shared pixel. Furthermore, referring to Figure 4, although a light-shielding layer 310 is set on the light-emitting side of the second sub-pixel 200b in Figure 4, the light emitted from the second sub-pixel 200b at a wide viewing angle can still be emitted through the light-shielding opening 320. This results in the maximum light-emitting angle of the first sub-pixel 200a being smaller than that of the second sub-pixel 200b. In this case, the first sub-pixel 200a can be understood as a privacy pixel, and the second sub-pixel 200b can be understood as an auxiliary pixel, used to assist the first pixel 200a in emitting light for display.

[0020] It is understood that the viewing angle in this embodiment can be understood as the acute angle formed between the propagation direction of the light emitted from the sub-pixel 200 (taking light ray z1 as an example in Figure 4) and the thickness direction of the display panel 10 (shown as angle y in Figure 4). A positive viewing angle, or a small viewing angle, can be understood as the angle between the light emitted from the sub-pixel 200 and the thickness direction of the display panel 10 being relatively small, such as 0°, 5°, or 10°; a large viewing angle can be understood as the angle between the light emitted from the sub-pixel 200 and the thickness direction of the display panel 10 being relatively large, such as 50°, 60°, or 70°. The small and large viewing angles in this embodiment are relative concepts, and this embodiment does not numerically limit the size of the viewing angle corresponding to the small or large viewing angle.

[0021] Specifically, referring to Figures 2 and 4, the light emission adjustment structure 300 includes a first opening 300a. Along the first direction X1, the first opening 300a, which at least partially overlaps with the first sub-pixel 200a (which can be understood as the light-shielding opening 320 set in the light-shielding layer 310), covers the first pixel opening 102a, thus ensuring that more light emitted from the first sub-pixel 200a can exit from the light-shielding opening 320.

[0022] Referring again to Figure 2, along the first direction X1, the second opening 300b (which can be understood as the break between two adjacent light-shielding layers 310 along the second direction X2) covers the second pixel opening 102b, thus ensuring that more light emitted from the second sub-pixel 200b can exit through the second opening 300b. Furthermore, the minimum distance between the edge of the first opening 300a and the edge of the first pixel opening 102a is m1, and the minimum distance between the edge of the second opening 300b and the edge of the second pixel opening 102b is m2, where m2 > m1. In other words, the distance between the edge of the first opening 300a and the edge of the first pixel opening 102a is small. Thus, light rays emitted from the first sub-pixel 200a at a positive or smaller angle of view exit through the first opening 300a, while light rays emitted from the first sub-pixel 200a at a larger angle of view are blocked by the light-shielding layer 310. Conversely, the distance between the edge of the second opening 300b and the edge of the second pixel opening 102b is larger. Light rays from the second sub-pixel 200a at a larger angle of view are not blocked by the light-shielding layer 310, or the amount of light blocked by the light-shielding layer 310 is minimal, ensuring that the second sub-pixel 200b emits light at a large angle of view. Furthermore, referring to Figure 4, along the first direction X1, the light-shielding layer 310 covers the second pixel opening 102b, so that the light emitted from the second sub-pixel 200b mainly exits through the first opening 300a. In other words, light rays emitted from the first sub-pixel 200a at a smaller viewing angle or a normal viewing angle can exit through the first opening 300a without being blocked by the light-shielding layer 310 outside the first opening 300a. However, light rays emitted from the second sub-pixel 200b at a smaller viewing angle or a normal viewing angle are blocked by the light-shielding layer 310, while light rays emitted from the second sub-pixel 200b at a larger viewing angle exit through the first opening 300a. It should be noted that the specific values ​​of m1 and m2 are not limited in this embodiment of the application, and the values ​​of m1 and m2 can be reasonably set according to the panel size and display resolution.

[0023] Specifically, the display panel 10 has two display modes: a shared display mode and a privacy display mode. In the shared display mode, both the first sub-pixel 200a and the second sub-pixel 200b emit light. This means that the first sub-pixel 200a and the second sub-pixel 200b work together to emit light, ensuring that the light emitted by the multiple sub-pixels 200 in the display panel 10 is visible in both the direct viewing angle (small viewing angle) and the wide viewing angle. Specifically, the light emitted by the first sub-pixel 200a is visible in the direct viewing angle, while the light emitted by the second sub-pixel 200b is visible at least in the wide viewing angle, achieving normal display at different viewing angles. In the privacy display mode, the first sub-pixel 200a emits light, while the second sub-pixel 200b does not. This ensures that the light emitted by the multiple sub-pixels 200 in the display panel 10 is only visible in the direct viewing angle (small viewing angle), thus eliminating light emission in the wide viewing angle and preventing the display information from being displayed. This achieves privacy for the display information in the wide viewing angle and realizes the privacy function of the display panel 10.

[0024] Referring to Figures 2 and 4, the first sub-pixel 200a includes a first anode 211 and a first cathode 212, which form a first microcavity structure. Therefore, the emitted light from the first sub-pixel 200a can be modulated within the first microcavity structure. Specifically, the emission wavelength of the first sub-pixel 200a is λ1 along the first direction X1. The distance between the first anode 211 and the first cathode 212 is L1. The cavity length L1 of the first microcavity structure along the first direction X1 satisfies L1=n×(λ1 / 2), meaning that the cavity length of the first microcavity structure is a half-integer multiple of the emission wavelength of the first sub-pixel 200a. In this way, the first microcavity structure can perform strong microcavity modulation on the light transmitted along the first direction X1 in the first sub-pixel 200a, ensuring that the emitted light from the first sub-pixel 200a at the positive viewing angle has high energy and high brightness.

[0025] Specifically, Figure 6 is a schematic diagram of the viewing angle brightness and emission angle of a sub-pixel provided in this application. Referring to Figure 6, Figure 6 shows a schematic diagram of the relationship between the viewing angle brightness and emission energy of the first sub-pixel 200a. In the figure, the horizontal axis represents the emission angle of the sub-pixel, and the vertical axis represents the emission energy of the sub-pixel, indicating the normalized emission energy. As can be seen from Figure 6, the emission brightness of the first sub-pixel 200a is relatively high at a positive viewing angle, and relatively low at a large viewing angle.

[0026] Furthermore, referring to Figures 2, 4 and 5, the second sub-pixel 200b includes a second anode 221 and a second cathode 222, wherein the second anode 221 and the second cathode 222 form a second microcavity structure, so the light emitted from the second sub-pixel 200b can be modulated within the second microcavity structure.

[0027] Specifically, the light generated in the second sub-pixel 200b is transmitted within the second microcavity structure. The emission wavelength of the second sub-pixel 200b is λ2 along the first direction X1. The distance between the second anode 221 and the second cathode 222 is L2. The cavity length L2 of the second microcavity structure along the first direction X1 satisfies L2≠n×(λ2 / 2), meaning that the cavity length of the second microcavity structure is not a half-integer multiple of the emission wavelength of the second sub-pixel 200b. Therefore, the light adjustment effect of the second sub-pixel 200b on the positive viewing angle is weakened. At this time, the resonance condition is no longer a rigid standard of "either satisfied or suppressed," but becomes an elastic relationship of "the higher the degree of satisfaction, the stronger the output." Large-view light rays that were originally eliminated in the strong microcavity structure can also participate in resonance and output in the weak microcavity structure. This is equivalent to expanding the range of light output direction selection, further widening the light output viewing angle, and increasing the light output energy of large-view light rays, ensuring the brightness of large-view light output. Optionally, referring to Figures 2 and 5, which can be understood as different settings of the second sub-pixel 200b provided in Figure 1, the second sub-pixel 200b satisfies the distance L2 between the second anode 221 and the second cathode 222 only in the edge region. In Figure 5, the second sub-pixel 200b satisfies the distance L2 between the second anode 221 and the second cathode 222 in all regions. Thus, the settings of the second sub-pixel 200b are diverse and can be adaptively adjusted according to the actual needs of the display panel 10.

[0028] Specifically, referring to Figure 6, it can be seen that the second sub-pixel 200b has a relatively high light output brightness at a wide viewing angle, but its light output brightness is relatively low compared to the first sub-pixel 200a at a narrow viewing angle. This is because by adjusting the cavity length of the second microcavity structure along the first direction X1, the light output brightness of the second sub-pixel 200b at a wide viewing angle can be improved.

[0029] In other words, if the cavity length of the first microcavity structure adjusted in the first sub-pixel 200a along the first direction X1 satisfies a half-integer multiple of the wavelength of the light emitted from the first sub-pixel 200a, then the first microcavity structure can be understood as a strong microcavity structure. The setting of the strong microcavity structure can improve the light emission brightness of the first sub-pixel 200a at a positive viewing angle or a small viewing angle. However, the cavity length of the second microcavity structure in the second sub-pixel 200b along the first direction X1 does not satisfy a half-integer multiple of the wavelength of the light emitted from the second sub-pixel 200b. Therefore, the second microcavity structure can be understood as a weak cavity structure. In this case, the resonant selection effect of the weak microcavity structure is greatly weakened, the screening threshold for photons at different angles is reduced, and photons from more directions can meet the resonance condition and be output. This ultimately manifests as a widening of the light emission viewing angle and an increase in the energy of the light emitted from a large viewing angle. Therefore, the light emission brightness of the second sub-pixel 200b is improved at a large viewing angle.

[0030] Specifically, referring to Figures 2 and 4, the length adjustment of the first microcavity structure along the first direction X1 can be achieved by adjusting the number and / or thickness of the film layers of the light-emitting structure between the first anode 211 and the first cathode 212 in the first sub-pixel 200a. Regardless of whether the first sub-pixel 200a is a single-emitting-layer sub-pixel or a multi-emitting-layer cascaded sub-pixel, this can be achieved by adjusting the number and thickness of the film layers of the light-emitting structure between the first anode 211 and the first cathode 212. Similarly, referring to Figures 2, 4, and 5, the length adjustment of the second microcavity structure along the first direction X1 can be achieved by adjusting the number and / or thickness of the film layers of the light-emitting structure between the second anode 221 and the second cathode 222 in the second sub-pixel 200b. Regardless of whether the second sub-pixel 200b is a single-emitting-layer sub-pixel or a multi-emitting-layer cascaded sub-pixel, this can be achieved by adjusting the number and thickness of the film layers of the light-emitting structure between the second anode 221 and the second cathode 222.

[0031] It should be noted that, in order to adjust the cavity length of the first microcavity structure of the first sub-pixel 200a and simultaneously adjust the cavity length of the second microcavity structure of the second sub-pixel 200b, ensuring the overall display effect of the display panel 10, the height of the pixel definition layer 102 between the first sub-pixel 200a and the second sub-pixel 200b can be adjusted as shown in Figure 4. This allows for an overall adjustment of the thickness of the light-emitting structure filling the pixel opening, enabling adjustments to the cavity length of different microcavity structures. This results in a strong microcavity structure in the first sub-pixel 200a and a weak microcavity structure in the second sub-pixel 200b.

[0032] Optionally, the height of the pixel definition layer can be set to be the same, and only the overall thickness of the light-emitting structure within the pixel opening can be adjusted. As shown in Figure 2, the cavity length of the second microcavity structure can be adjusted by directly adjusting the number or thickness of the film layer of the light-emitting structure in a part of the second sub-pixel 200b, thus realizing a weak microcavity structure; the cavity length of the second microcavity structure can be adjusted by directly adjusting the number or thickness of the film layer of the light-emitting structure in the first sub-pixel 200a, thus realizing a strong microcavity structure.

[0033] Furthermore, the cavity lengths of the first and second microcavity structures along the first direction X1 are modulated according to half-integer multiples of the corresponding emitted wavelengths. Depending on the adjustment of the multiple, L1 can be greater than L2, or L2 can be greater than L1. Figure 5 illustrates this with L1 greater than L2 as an example. Therefore, the configuration of the first sub-pixel 200a and the second sub-pixel 200b is diverse, and Figures 2, 4, and 5 do not show all the specific adjustment methods of the light-emitting structures.

[0034] In summary, this application provides a display panel comprising multiple sub-pixels, including a first sub-pixel and a second sub-pixel with the same emission color. The maximum emission angle of the first sub-pixel is smaller than that of the second sub-pixel. By controlling the emission of the first and second sub-pixels, different display modes of the display panel can be achieved. Along the first direction, the distance between the first anode and the first cathode is L1, where L1 = n × (λ1 / 2), and λ1 is the emission wavelength of the first sub-pixel. This means that the distance of the first microcavity structure along the first direction satisfies a half-integer multiple of the emission wavelength of the first sub-pixel, forming a strong microcavity structure. This strong microcavity structure enhances the emission brightness at small viewing angles or normal viewing angles, thereby ensuring the emission effect of the first sub-pixel at small viewing angles. In the second sub-pixel, the second anode and the second cathode form a second microcavity structure. Along the first direction, the distance between at least a portion of the second anode and at least a portion of the second cathode is L2, where L2 ≠ m × (λ2 / 2), and λ2 is the emission wavelength of the second sub-pixel. This means that the distance of the second microcavity structure along the first direction does not satisfy a half-integer multiple of the emission wavelength of the second sub-pixel, thus forming a weak microcavity structure. This allows large-viewing-angle light rays that would otherwise be eliminated in a strong microcavity structure to participate in resonance and be output in a weak microcavity structure, thereby increasing the emission brightness of large-viewing-angle light and ensuring the light emission effect of the second sub-pixel at large viewing angles. Furthermore, the display panel's display modes include a shared display mode and a privacy display mode. In the shared display mode, both the first and second sub-pixels emit light, ensuring the light emission effect of the display panel at both large and normal viewing angles, thus guaranteeing the display panel's display effect. In the privacy display mode, the first sub-pixel emits light, while the second sub-pixel does not, ensuring the light emission effect of the display panel at normal viewing angles, resulting in the loss of information displayed at large viewing angles, achieving confidentiality of display information in the large viewing angle direction, and realizing the privacy function of the display panel.

[0035] Referring to Figures 1, 2, and 5, the second sub-pixel 200b includes a first sub-pixel portion 200b1 and a second sub-pixel portion 200b2, with the first sub-pixel portion 200b1 surrounding at least a portion of the second sub-pixel portion 200b2; the second anode 221 includes a connected first anode portion 221a and anode portion 221b, and the second cathode 222 includes a connected first cathode portion 222a and anode portion 222b. The first sub-pixel portion 200b1 includes the first anode portion... The second sub-pixel portion 200b2 includes a second anode portion 221b and a second cathode portion 222b; the second microcavity structure includes a first microcavity structure portion formed by the first anode portion 221a and the first cathode portion 222a, and a second microcavity structure portion formed by the second anode portion 221b and the second cathode portion 222b; along the first direction X1, at least the distance between the first anode portion 221a and the first cathode portion 222a is L2.

[0036] Referring to Figures 1, 2, and 5, the second sub-pixel 200b includes a first sub-pixel portion 200b1 and a second sub-pixel portion 200b2, wherein the first sub-pixel portion 200b1 surrounds at least a portion of the second sub-pixel portion 200b2. This can be understood as the first sub-pixel portion 200b1 being the outer periphery of the second sub-pixel 200b, and the second sub-pixel portion 200b2 being the inner periphery of the second sub-pixel 200b.

[0037] Further, referring to Figures 1, 2, and 5, the second anode 221 includes a connected first anode portion 221a and a second anode portion 221b, and the second cathode 222 includes a connected first cathode portion 222a and a second cathode portion 222b. The first anode portion 221a and the first cathode portion 222a are electrode structures in the first sub-pixel portion 200b1, and the second anode portion 221b and the second cathode portion 222b are electrode structures in the second sub-pixel portion 200b2. By dividing the second anode 221 and the second cathode 222 into regions, it is easier to distinguish the first sub-pixel portion 200b1 and the second sub-pixel portion 200b2.

[0038] Furthermore, the second microcavity structure includes a first microcavity structure portion and a second microcavity structure portion. Referring to Figures 2 and 5, the first anode portion 221a and the first cathode portion 222a form the first microcavity structure portion, and the light generated by the first sub-pixel portion 200b1 is modulated within the first microcavity structure portion; the second anode portion 221b and the second cathode portion 222b form the second microcavity structure portion, and the light generated by the second sub-pixel portion 200b2 is modulated within the second microcavity structure portion.

[0039] Furthermore, along the first direction X1, the distance between at least the first anode portion 221a and the first cathode portion 222a is L2. That is, a weak microcavity structure is formed between at least the first anode portion 221a and the first cathode portion 222a in the second sub-pixel 200b. As one possible implementation, referring to FIG2, the distance between the first anode portion 221a and the first cathode portion 222a in the first microcavity structure portion is L2; ​​while the distance between the second anode portion 221b and the second cathode portion 222b in the second microcavity structure portion is not L2. Thus, the cavity length of the first microcavity structure portion satisfies the weak microcavity structure, meaning the first microcavity structure portion can achieve a weak microcavity effect; the cavity length of the second microcavity structure portion does not satisfy the weak microcavity structure, meaning the first microcavity structure portion does not achieve a weak microcavity effect and may even achieve a strong microcavity effect.

[0040] As another feasible implementation, referring to Figure 5, the distance between the entire second anode 221 and the entire second cathode 222 in the second sub-pixel 200b along the first direction X1 is L2. Thus, a weak microcavity structure is formed between the second anode 221 and the second cathode 222 in any region of the second sub-pixel 200b. Combining Figures 2 and 5, in the second sub-pixel 200b, at least a portion of the region allows large-angle light rays that would otherwise be eliminated in the strong microcavity structure to participate in resonance and be output in the weak microcavity structure, thereby increasing the brightness of the large-angle light rays and ensuring the light output effect of the second sub-pixel 200b at large angles.

[0041] Referring again to Figure 5, along the first direction X1, the distance between the second anode portion 221b and the second cathode portion 222b is L2.

[0042] Specifically, referring to Figure 5, in the second sub-pixel 200b, along the first direction X1, the distance between the second anode portion 221b and the second cathode portion 222b is L2, as is the distance between the first anode portion 221a and the first cathode portion 222a. Therefore, the length of the second microcavity structure portions along the first direction X1 does not satisfy half an integer multiple of the light output wavelength of the second sub-pixel portion 200b2, i.e., it does not satisfy half an integer multiple of the light output wavelength of the second sub-pixel 200b. It can still form a weak microcavity structure, which can also allow the large-angle light rays that were originally eliminated in the strong microcavity structure to participate in resonance and output in the weak microcavity structure. That is, it improves the light output brightness of the large-angle light rays, ensures the light output effect of the second sub-pixel portion 200b2 under large angles, and further ensures the overall light output effect of the second sub-pixel 200b under large angles.

[0043] Furthermore, referring to Figure 5, along the first direction X1, the cavity length of the first microcavity structure portion and the cavity length of the second microcavity structure portion are the same. This ensures that the film layer structure between the first anode portion 221a and the first cathode portion 222a is the same as the film layer structure between the second anode portion 221b and the second cathode portion 222b. For example, it ensures that the number and thickness of the film layers between the first anode portion 221a and the first cathode portion 222a are the same as those between the second anode portion 221b and the second cathode portion 222b. Therefore, the structure of the second sub-pixel 200b can be simplified, reducing the manufacturing cost of the display panel 10. At the same time, it also ensures the flatness of the entire structure of the second anode 221 and the second cathode 222, guaranteeing the overall flatness of the display panel 10.

[0044] Referring again to Figure 2, along the first direction X1, the distance between the second anode portion 221b and the second cathode portion 222b is L3; where L3 = p × (λ2 / 2), and p is a positive integer.

[0045] Specifically, referring to Figure 2, the distance between the second anode portion 221b and the second cathode portion 222b along the first direction X1 is L3, and the cavity length of the microcavity structure formed by the second anode portion 221b and the second cathode portion 222b along the first direction X1 is L3. L3 satisfies: L3 = p × (λ² / 2), meaning that the microcavity structure satisfies a half-integer multiple of the emission wavelength of the second sub-pixel 200b. Thus, the microcavity structure can strongly adjust the light transmitted along the first direction X1 in part of the second sub-pixel 200b, ensuring that the light emitted from the second sub-pixel 200b at the positive viewing angle has higher energy and brightness. Therefore, since the cavity length of the second microcavity structure portion satisfies a half-integer multiple of the emission wavelength of the second sub-pixel 200b, constructive interference of some of the light emitted from the second sub-pixel 200b within the second microcavity structure portion can be achieved, improving the positive viewing angle light emission effect of the second sub-pixel 200b.

[0046] In the second sub-pixel 200b, the first sub-pixel portion 200b1 is the outer periphery of the second sub-pixel 200b. By limiting the cavity length of the first microcavity structure portion to not be a half-integer multiple of the emission wavelength of the second sub-pixel 200b, a wide viewing angle light emission effect is ensured in the outer region of the second sub-pixel 200b. In the second sub-pixel 200b, the second sub-pixel portion 200b2 is the inner periphery of the second sub-pixel 200b. By limiting the cavity length of the second microcavity structure portion to be a half-integer multiple of the emission wavelength of the second sub-pixel 200b, a positive viewing angle light emission effect is ensured in the inner periphery of the second sub-pixel 200b. Therefore, by finely adjusting the second sub-pixel 200b, a multi-angle light emission effect of the second sub-pixel 200b can be guaranteed, further ensuring the display effect of the display panel 10.

[0047] Referring again to Figures 3 and 4, the second sub-pixel 200b surrounds at least a portion of the first sub-pixel 200a.

[0048] Furthermore, referring to Figures 3 and 4, the second sub-pixel 200b is arranged around a portion of the first sub-pixel 200a. The light generated by the first sub-pixel 200a can be emitted through the opening in the light-shielding layer 310 at a positive viewing angle, while the light generated by the second sub-pixel 200b can be emitted through the opening in the light-shielding layer 310 at a wide viewing angle.

[0049] Specifically, in the privacy display mode of the display panel 10, controlling the first sub-pixel 200a to emit light ensures the light emission effect of the display panel 10 at a normal viewing angle, while the second sub-pixel 200b does not emit light, thus preventing the display panel 10 from displaying light at wide viewing angles. Therefore, the privacy of the displayed information on the display panel 10 can be achieved at wide viewing angles, realizing the privacy function of the display panel 10. In the shared display mode of the display panel 10, controlling the first sub-pixel 200a to emit light ensures the light emission effect of the display panel 10 at a normal viewing angle, while simultaneously controlling the second sub-pixel 200b to emit light compensates for the light emission missing from the first sub-pixel 200a at wide viewing angles, thereby ensuring the display panel 10 maintains its light emission effect even at wide viewing angles. Therefore, the light emission effect of the display panel 10 at all viewing angles can be guaranteed in the shared display mode.

[0050] Figure 7 is an enlarged schematic diagram of a first sub-pixel provided in this application; Figure 8 is an enlarged schematic diagram of a second sub-pixel provided in this application; Figure 9 is an enlarged schematic diagram of another first sub-pixel provided in this application; and Figure 10 is an enlarged schematic diagram of yet another second sub-pixel provided in this application. Referring to Figures 7 to 10, the first sub-pixel 200a further includes a first light-emitting structure 213 located between the first anode 211 and the first cathode 212, the first light-emitting structure 213 including multiple layers of first light-emitting material 214; the second sub-pixel 200b further includes a second light-emitting structure 223 located between the second anode 221 and the second cathode 222, the second light-emitting structure 223 including multiple layers of second light-emitting material 224; the number of first light-emitting material layers 214 in the first light-emitting structure 213 is different from the number of second light-emitting material layers 224 in at least a portion of the second light-emitting structure 223, and / or, the thickness of at least one first light-emitting material layer 214 is different from the thickness of at least a portion of the at least one second light-emitting material layer 224.

[0051] Figures 7 to 10 are enlarged schematic diagrams of sub-pixel 200. The first sub-pixel 200a in Figures 2 and 4 can be the first sub-pixel 200a in Figure 7 or Figure 9. The second sub-pixel 200a in Figures 2, 4 and 5 can be the second sub-pixel 200b in Figure 8 or Figure 10. Figures 7 to 10 are used to illustrate the specific structure of sub-pixel 200. This application does not describe the specific settings of all sub-pixels 200 one by one. Therefore, the structure of sub-pixels 200 can be adaptively adjusted according to actual needs.

[0052] Specifically, referring to Figures 7 and 9, the first sub-pixel 200a further includes a first light-emitting structure 213 located between the first anode 211 and the first cathode 212, the first light-emitting structure 213 including multiple layers of first light-emitting material 214. Referring to Figures 8 and 10, the second sub-pixel 200b further includes a second light-emitting structure 223 located between the second anode 221 and the second cathode 222, the second light-emitting structure 223 including multiple layers of second light-emitting material 224. Further, the thickness of the first light-emitting structure 213 along the first direction X1 can be understood as the cavity length of the first microcavity structure, and the thickness of the second light-emitting structure 223 along the first direction X1 can be understood as the cavity length of the second microcavity structure. To ensure that the cavity length of the first microcavity structure is a half-integer multiple of the emission wavelength of the first sub-pixel 200a, the number of first light-emitting material layers 214 in the first light-emitting structure 213 can be adjusted, or the film thickness of the first light-emitting material layers 214 in at least a portion of the second light-emitting structure 223 can be adjusted. It should be noted that a portion of the second light-emitting structure 223 can be understood as a region divided along a direction parallel to the plane of the substrate 100, rather than a region divided along a direction perpendicular to the plane of the substrate 100. For example, the edge region of the second light-emitting structure 223. Alternatively, the number of first light-emitting material layers 214 in the first light-emitting structure 213 can be understood as the sum of the number of all first light-emitting material layers 214 in the first light-emitting structure 213; similarly, the number of second light-emitting material layers 224 in at least a portion of the second light-emitting structure 223 can be understood as the sum of the number of second light-emitting material layers 224 in at least a portion of the second light-emitting structure 223. Similarly, to ensure that the cavity length of the second microcavity structure does not satisfy a half-integer multiple of the emission wavelength of the second sub-pixel 200b, the number of second light-emitting material layers 224 in the second light-emitting structure 223 can be adjusted, or the film thickness of at least a portion of the second light-emitting material layers 224 can be adjusted.

[0053] For example, referring to FIG7, the multilayer first light-emitting material layer 214 in the first sub-pixel 200a may include a hole injection layer (HIL) 214a, a hole transport layer (HTL) 214b, a compensation layer (Prime) 214c, a composite light-emitting layer (EML) 214d, a hole block layer (HBL) 214e, an electron transport layer (ETL) 214f, and an electron injection layer (EIL) 214g. Similarly, referring to Figure 8, the multilayer second light-emitting material layer 224 in the second sub-pixel 200a may include a hole injection layer (HIL) 224a, a hole transport layer (HTL) 224b, a compensation layer (Prime) 224c, an emitting layer (EML) 224d, a hole block layer (HBL) 224e, an electron transport layer (ETL) 224f, and an electron injection layer (EIL) 2124g. For example, referring to Figures 7 and 8, the thickness of the first light-emitting structure 213 along the first direction X1 can be adjusted by adjusting the compensation layer 214c in the first sub-pixel 200a, and the thickness of the second light-emitting structure 223 along the first direction X1 can be adjusted by adjusting the compensation layer 224c in the second sub-pixel 200b. Furthermore, the thickness of the first light-emitting structure 213 along the first direction X1 can be adjusted by adjusting the other film layer structures in the first light-emitting material layer 214, and the thickness of the second light-emitting structure 223 along the first direction X1 can be adjusted by adjusting the other film layer structures in the second light-emitting material layer 224.

[0054] Further, referring to Figure 9, the multilayer first light-emitting material layer 214 in the first sub-pixel 200a may include a hole injection layer (HIL) 234a, a hole transport layer (HTL) 234b, a compensation layer (Prime) 234c, a composite light-emitting layer (EML) 234d, a hole block layer (HBL) 234e, an electron transport layer (ETL) 234f, two charge generation layers 215, a hole injection layer (HIL) 244a, a hole transport layer (HTL) 244b, a compensation layer (Prime) 244c, a composite light-emitting layer (EML) 244d, an electron transport layer (ETL) 244f, and an electron injection layer (EIL) 244g. Similarly, referring to Figure 10, the multilayer second light-emitting material layer 224 in the second sub-pixel 200b may include a hole injection layer (HIL) 254a, a hole transport layer (HTL) 254b, a compensation layer (Prime) 254c, a composite light-emitting layer (EML) 254d, a hole block layer (HBL) 254e, an electron transport layer (ETL) 254f, two charge generation layers 225, a hole injection layer (HIL) 264a, a hole transport layer (HTL) 264b, a compensation layer 264 (Prime)c, a composite light-emitting layer (EML) 264d, an electron transport layer (ETL) 264f, and an electron injection layer (EIL) 264g. The thickness of the first light-emitting structure 213 along the first direction X1 can be adjusted by adjusting the thickness of any film layer in the first light-emitting material layer 214, and the thickness of the second light-emitting structure 223 along the first direction X1 can also be adjusted by adjusting the thickness of any film layer in the second light-emitting material layer 224.

[0055] Therefore, in order to achieve differentiated cavity length settings for the corresponding microcavity structures in the first sub-pixel 200a and the second sub-pixel 200b in the display panel 10, the thickness of at least one first light-emitting material layer 214 can be adjusted to be different from at least a portion of the thickness of at least one second light-emitting material layer 224. Further, referring to Figures 8 and 9, adjusting the number of first light-emitting material layers 214 to be different from at least a portion of the number of second light-emitting material layers 224 achieves differentiated cavity length settings for the first and second microcavity structures. This ensures the brightness of the first sub-pixel 200a at a forward viewing angle and the brightness of the second sub-pixel 200b at a wide viewing angle.

[0056] Referring to Figure 9, the first sub-pixel 200a also includes a first light-emitting structure 213 located between the first anode 211 and the first cathode 212. The first light-emitting structure 213 includes a first light-emitting unit layer 213a, a first charge-generating layer 213b, and a second light-emitting unit layer 213c stacked along the first direction X1. The first light-emitting unit layer 213a, the first charge-generating layer 213b, and the second light-emitting unit layer 213c all include multiple layers of first light-emitting material 214.

[0057] Further, referring to Figure 9, the first light-emitting structure 213 includes a first light-emitting unit layer 213a, a first charge-generating layer 213b, and a second light-emitting unit layer 213c stacked along the first direction X1. Both the first light-emitting unit layer 213a and the second light-emitting unit layer 213c include multiple layers of first light-emitting material 214. Both the first light-emitting unit layer 213a and the second light-emitting unit layer 213c are a set of film layers that can emit light between the first anode 211 and the first cathode 212. The first charge-generating layer 213b can be understood as a series film layer structure, used to connect the stacked first light-emitting unit layer 213a and the second light-emitting unit layer 213c in series. Therefore, the first sub-pixel 200a can be understood as a multi-light-emitting layer series sub-pixel. The display panel 10 that uses multiple stacked light-emitting unit layers to emit light is called a tandem OLED display panel. The tandem display panel allows the sub-pixels 200 to be driven at the same current density, thereby greatly improving the brightness of the display panel 10. This ensures the luminous brightness of the first sub-pixel 200a and extends its lifespan.

[0058] Specifically, referring to Figure 9, the first light-emitting unit layer 213a includes a hole injection layer (HIL) 234a, a hole transport layer (HTL) 234b, a compensation layer (Prime) 234c, a composite light-emitting layer (EML) 234d, a hole block layer (HBL) 234e, and an electron transport layer (ETL) 234f arranged sequentially along the first direction X1. The second light-emitting unit layer 213c includes a hole injection layer (HIL) 244a, a hole transport layer (HTL) 244b, a compensation layer (Prime) 244c, a composite light-emitting layer (EML) 244d, an electron transport layer (ETL) 244f, and an electron injection layer (EIL) 244g arranged sequentially along the first direction X1. The first charge generation layer 213b includes an N-type charge generation layer 215a and a P-type charge generation layer 215b stacked along the first direction X1. The N-type charge generation layer 215a generates electrons, and the P-type charge generation layer 215b generates holes, ensuring that both the first light-emitting unit layer 213a and the second light-emitting unit layer 213c can emit light normally. It should be noted that the type and number of the first light-emitting material layers 214 specifically included in the first light-emitting unit layer 213a, the second light-emitting unit layer 213c, and the first charge generation layer 213b are only illustrated in Figure 10 and can be adjusted adaptively according to actual conditions.

[0059] Figure 11 is an enlarged schematic diagram of another second sub-pixel provided in this application. Referring to Figures 8, 10 and 11, the second sub-pixel 200b also includes a second light-emitting structure 223 located between the second anode 221 and the second cathode 222. The second light-emitting structure 223 includes at least one light-emitting unit layer; the light-emitting unit layer includes multiple layers of second light-emitting material 224.

[0060] The second light-emitting structure 223 includes at least one light-emitting unit layer, which can be understood as a set of film layers disposed between the second anode 221 and the second cathode 222 to achieve light emission. There are various ways to arrange the light-emitting unit layer in the second sub-pixel 200b. For example, referring to FIG8, one light-emitting unit layer can be disposed between the second anode 221 and the second cathode 222 (as shown in 223d in FIG8). Referring to FIG10, two light-emitting unit layers can be disposed between the second anode 221 and the second cathode 222 (as shown in 223a and 223c in FIG10). Referring to FIG11, in a second sub-pixel 200a, one light-emitting unit layer is disposed between a portion of the second anode 221 and the second cathode 222 (as shown in 223e in FIG11), and in a second sub-pixel 200a, two light-emitting unit layers are disposed between a portion of the second anode 221 and the second cathode 222 (as shown in 223f and 223g in FIG11).

[0061] Optionally, referring to Figure 10, the second light-emitting structure 223 includes a third light-emitting unit layer 223a, a second charge-generating layer 223b, and a fourth light-emitting unit layer 223c stacked along the first direction X1; the third light-emitting unit layer 223a, the second charge-generating layer 223b, and the fourth light-emitting unit layer 223c each include multiple layers of second light-emitting material 224.

[0062] Specifically, referring to Figure 10, the second light-emitting structure 223 includes a third light-emitting unit layer 223a, a second charge-generating layer 223b, and a fourth light-emitting unit layer 223c stacked along the first direction X1. Both the third and fourth light-emitting unit layers 223a and 223c include multiple layers of second light-emitting material 224. Both layers form a set of film layers that can emit light between the second anode 221 and the second cathode 222. The second charge-generating layer 223b can be understood as a series film layer structure, used to connect the stacked third and fourth light-emitting unit layers 223a and 223c in series. Therefore, the second sub-pixel 200b can be understood as a multi-light-emitting layer series-connected sub-pixel, ensuring the brightness of the second sub-pixel 200b and improving its lifespan.

[0063] Specifically, referring to Figure 10, the third light-emitting unit layer 223a includes a hole injection layer 254a, a hole transport layer 254b, a compensation layer 254c, a composite light-emitting layer 254d, a hole blocking layer 254e, and an electron transport layer 254f, arranged sequentially along the first direction X1. The fourth light-emitting unit layer 223c includes a hole injection layer 264a, a hole transport layer 264b, a compensation layer 264c, a composite light-emitting layer 264d, an electron transport layer 264f, and an electron injection layer 264g, arranged sequentially along the first direction X1. The second charge generation layer 223b includes an N-type charge generation layer 225a and a P-type charge generation layer 225b stacked along the first direction X1. The N-type charge generation layer 225a is used to generate electrons, and the P-type charge generation layer 225b is used to generate holes, ensuring that both the third light-emitting unit layer 223a and the fourth light-emitting unit layer 223c can emit light normally. It should be noted that the type and number of the second light-emitting material layers 224 specifically included in the third light-emitting unit layer 223a, the fourth light-emitting unit layer 223c, and the second charge generating layer 223b are only illustrated in Figure 10 and can be adjusted adaptively according to the actual situation.

[0064] Optionally, continuing to refer to Figure 8, the second light-emitting structure 223 includes a fifth light-emitting unit layer 223d; the fifth light-emitting unit layer 223d includes multiple layers of second light-emitting material 224.

[0065] Specifically, referring to Figure 8, the second light-emitting structure 223 includes a fifth light-emitting unit layer 223d, which is a set of film layers between the second anode 221 and the second cathode 222 that can emit light. Therefore, the second sub-pixel 200b can be understood as a single-emitting-layer sub-pixel. While ensuring that the second sub-pixel 200b emits light normally, the manufacturing difficulty of the second sub-pixel 200b is reduced, and the manufacturing cost of the display panel 10 is reduced. Furthermore, this demonstrates the flexibility of the setting method of the second sub-pixel 200b, which can be adaptively adjusted according to actual needs.

[0066] Optionally, referring to FIG11, the second sub-pixel 200b includes a first sub-pixel portion 200b1 and a second sub-pixel portion 200b2, the first sub-pixel portion 200b1 surrounding at least a portion of the second sub-pixel portion 200b2; the second anode 221 includes a connected first anode portion 221a and a second anode portion 221b, the second cathode 222 includes a connected first cathode portion 222a and a second cathode portion 222b, the first sub-pixel portion 200b1 includes a first anode portion 221a and a first cathode portion 222a, the second sub-pixel portion 200b2 includes a second anode portion 221b and a second cathode portion 222b; the first sub-pixel portion 200b1 further includes a portion located in the first... The first light-emitting structure portion 2231 is located between the anode portion 221a and the first cathode portion 222a. The second sub-pixel portion 200b2 also includes a second light-emitting structure portion 2232 located between the second anode portion 221b and the second cathode portion 222b. The first light-emitting structure portion 2231 includes a sixth light-emitting unit layer 223e. The second light-emitting structure portion 2232 includes a seventh light-emitting unit layer 223f, a third charge-generating layer 223g, and an eighth light-emitting unit layer 223h stacked along the first direction X1. The sixth light-emitting unit layer 223e, the seventh light-emitting unit layer 223f, the third charge-generating layer 223g, and the eighth light-emitting unit layer 223h all include multiple layers of second light-emitting material 224.

[0067] Further, referring to Figure 11, the second sub-pixel 200b includes a first sub-pixel portion 200b1 and a second sub-pixel portion 200b2, wherein the first sub-pixel portion 200b1 can be understood as the outer periphery of the second sub-pixel 200b, and the second sub-pixel portion 200b2 can be understood as the inner periphery of the second sub-pixel 200b. Specifically, referring to Figure 11, the second anode 221 includes a connected first anode portion 221a and a second anode portion 221b, and the second cathode 222 includes a connected first cathode portion 222a and a second cathode portion 222b. The first sub-pixel portion 200b1 includes a first anode portion 221a, a first cathode portion 222a, and a first light-emitting structure portion 2231, which is located between the first anode portion 221a and the first cathode portion 222a. The second sub-pixel portion 200b2 includes a second anode portion 221b, a second cathode portion 222b, and a second light-emitting structure portion 2232, wherein the second light-emitting structure portion 2232 is located between the second anode portion 221b and the second cathode portion 222b.

[0068] Furthermore, referring to Figure 11, the first light-emitting structure portion 2231 includes a sixth light-emitting unit layer 223e, wherein the sixth light-emitting unit layer 223e is a set of film layer structures that can realize light emission between the first anode portion 221a and the first cathode portion 222a. Therefore, the first sub-pixel portion 200b1 can be understood as a single-light-emitting layer sub-pixel. Referring to Figure 11, the second light-emitting structure portion 2232 includes a seventh light-emitting unit layer 223f, a third charge-generating layer 223g, and an eighth light-emitting unit layer 223h stacked along the first direction X1. The seventh light-emitting unit layer 223f, the third charge-generating layer 223g, and the eighth light-emitting unit layer 223h all include multiple layers of second light-emitting material 224. The eighth light-emitting unit layer 223h and the seventh light-emitting unit layer 223f are film layer structures that can realize light emission independently between the second anode portion 221b and the second cathode portion 222b. Therefore, the second sub-pixel portion 200b2 can be understood as a multi-light-emitting layer tandem sub-pixel. In other words, the outer portion of the second sub-pixel 200b can be a single-emitting-layer sub-pixel, while the inner portion can be a multi-emitting-layer cascaded sub-pixel. The area of ​​the second sub-pixel portion 200b2 can be larger than the area of ​​the first sub-pixel portion 200b1, meaning the area of ​​the inner portion can be larger than the area of ​​the outer portion. By setting the larger second sub-pixel portion 200b2 to a cascaded sub-pixel configuration, the overall light emission effect of the second sub-pixel 200b can be guaranteed, improving its lifespan. Simultaneously, it ensures a strong microcavity effect in the inner portion of the second sub-pixel 200b, achieving light emission from a positive viewing angle. Conversely, setting the smaller first sub-pixel portion 200b1 to a single-emitting-layer sub-pixel configuration ensures a weak microcavity effect in the outer portion of the second sub-pixel 200b, achieving a light emission effect from a wide viewing angle. Furthermore, setting the first sub-pixel portion 200b1 to a single-emitting-layer sub-pixel and the second sub-pixel portion 200b2 to a cascaded sub-pixel configuration further demonstrates the flexibility in setting the second sub-pixel 200b.

[0069] Figure 12 is an enlarged schematic diagram of another second sub-pixel provided in this application. Referring again to Figures 11 and 12, the sixth light-emitting unit layer 223e includes a first hole injection layer 274a, a first hole transport layer 274b, a first composite light-emitting layer 274d, a first electron transport layer 274f, and a first electron injection layer 274g stacked along the first direction X1; the seventh light-emitting unit layer 223f includes a second hole injection layer 284a, a second hole transport layer 284b, a second composite light-emitting layer 284d, and a second electron transport layer 284f stacked along the first direction X1; the third charge generation layer 223g includes an N-type charge generation layer 284a stacked along the first direction X1. 26a and P-type charge generation layer 226b; the eighth light-emitting unit layer 223h includes a third composite light-emitting layer 294d, a third electron transport layer 294f, and a second electron injection layer 284g stacked along the first direction X1; the first hole injection layer 274a and the second hole injection layer 284a are disposed in the same layer, the first hole transport layer 274b and the second hole transport layer 284b are disposed in the same layer, the first composite light-emitting layer 274d and the second composite light-emitting layer 284d are disposed in the same layer, the first electron transport layer 274f and the second electron transport layer 284f or the third electron transport layer 294f are disposed in the same layer, and the first electron injection layer 274g and the second electron injection layer 284g are disposed in the same layer.

[0070] Furthermore, referring to Figures 11 and 12, the sixth light-emitting unit layer 223e includes multiple layers of second light-emitting material 224, such as a first hole injection layer (HIL) 274a, a first hole transport layer (HTL) 274b, a first compensation layer (Prime) 274c, a first emitting layer (EML) 274d, a first hole block layer (HBL) 274e, a first electron transport layer (ETL) 274f, and a first electron injection layer (EIL) 274g stacked along the first direction X1. The multiple layers of second light-emitting material 224 in the sixth light-emitting unit layer 223e are illustrated in Figures 11 and 12. The type and number of the second light-emitting material layers 224 can be adaptively adjusted according to actual needs.

[0071] Furthermore, referring to Figures 11 and 12, the seventh light-emitting unit layer 223f includes multiple layers of second light-emitting materials 224, such as a second hole injection layer (HIL) 284a, a second hole transport layer (HTL) 284b, a second compensation layer (Prime) 284c, a second emitting layer (EML) 284d, a second hole block layer (HBL) 274e, and a second electron transport layer (ETL) 284f stacked along the first direction X1. The multiple layers of second light-emitting materials 224 in the seventh light-emitting unit layer 223f are illustrated in Figures 11 and 12. The type and number of the second light-emitting materials 224 can be adaptively adjusted according to actual needs.

[0072] Furthermore, referring to Figures 11 and 12, the eighth light-emitting unit layer 223h includes multiple layers of second light-emitting material 224, such as a third hole injection layer (HIL) 294a, a third hole transport layer (HTL) 294b, a third compensation layer (Prime) 294c, a third emitting layer (EML) 294d, a third electron transport layer (ETL) 294f, and a second electron injection layer (EIL) 284g stacked along the first direction X1. The multiple layers of second light-emitting material 224 in Figures 11 and 12 are used to illustrate the eighth light-emitting unit layer 223h. The type and number of the second light-emitting material layers 224 can be adaptively adjusted according to actual needs. The third charge generation layer 223g, located between the seventh light-emitting unit layer 223f and the eighth light-emitting unit layer 223h along the first direction X1, includes an N-type charge generation layer 226a and a P-type charge generation layer 226b stacked along the first direction X1.

[0073] Referring to Figures 11 and 12, the first hole injection layer (HIL) 274a and the second hole injection layer (HIL) 284a are arranged in the same layer, the first hole transport layer (HTL) 274b and the second hole transport layer (HTL) 284b are arranged in the same layer, and the first emitting layer (EML) 274d and the second emitting layer (EML) 284d are arranged in the same layer. That is to say, at least a portion of the second emitting material layer 224 in the sixth emitting unit layer 223e and at least a portion of the second emitting material layer 224 in the seventh emitting unit layer 223f are arranged in the same layer. In other words, part of the second light-emitting material layer 224, which is set in the same layer, is used to form a film structure of a single light-emitting layer sub-pixel, and part of it is used to form a multi-light-emitting layer series sub-pixel, thereby improving the utilization rate of the second light-emitting material layer 224, flexibly setting the second sub-pixel 200b, and reducing the overall process difficulty of the display panel 10. Furthermore, referring to Figure 11, the first electron injection layer (EIL) 274g and the second electron injection layer (EIL) 284g are set in the same layer. Referring to Figure 12, the first electron injection layer (EIL) 274g and the second electron injection layer (EIL) 284g are set in the same layer. At the same time, the first electron transport layer (ETL) 274f, the second electron transport layer (ETL) 284f and the third electron transport layer (ETL) 294f are also set in the same layer, further demonstrating the flexibility of the second sub-pixel 200b.

[0074] Figure 13 is a cross-sectional schematic diagram along section line D-D' in Figure 1. Referring to Figures 1 and 13, the opening area of ​​the second sub-pixel 200b is greater than or equal to the opening area of ​​the first sub-pixel 200a; the opening area of ​​the second sub-pixel portion 200b2 is less than the opening area of ​​the first sub-pixel 200a.

[0075] Referring to Figure 13, the aperture area can be understood as the aperture area of ​​the pixel opening in the pixel definition layer 102. The pixel opening is used to define at least a portion of the light-emitting area of ​​the first sub-pixel 200a. Specifically, when the aperture area of ​​the second sub-pixel 200b is equal to the aperture area of ​​the first sub-pixel 200a, the overall structural regularity of the display panel 10 can be guaranteed, the fabrication difficulty of the pixel definition layer 102 can be reduced, and the manufacturing cost of the display panel 10 can be reduced. Furthermore, the first sub-pixel 200a in the display panel 10 can guarantee the light emission brightness at a normal viewing angle, and the second sub-pixel 200b can guarantee the light emission brightness at both normal and wide viewing angles. To ensure the light emission effect at each viewing angle, the corresponding pixel opening can be adaptively adjusted. Specifically, the aperture area of ​​the second sub-pixel 200b is adjusted to be larger than the aperture area of ​​the first sub-pixel 200a, thus balancing the light emission brightness at both normal and wide viewing angles, ensuring that the display panel has a good display effect at all viewing angles. It should be noted that, as shown in Figure 1, the pixel opening of a sub-pixel can be circular. This ensures a regular shape for the pixel opening and avoids optical diffraction problems caused by sharp angles, thereby improving the light emission and display effect of the display panel. Furthermore, the opening area of ​​the second sub-pixel 200b is greater than or equal to the opening area of ​​the first sub-pixel 200a. Figure 13 only exemplarily shows that the opening width (diameter) of the second sub-pixel 200b in the second direction is k2, and the opening width (or diameter) of the first sub-pixel 200a in the second direction is k1, where k2 ≥ k1. Figure 13 illustrates the relationship between pixel opening areas through the relationship between the widths (diameters) of the pixel openings.

[0076] Furthermore, when the opening area of ​​the second sub-pixel 200b is larger than the opening area of ​​the first sub-pixel 200a, in order to ensure that the first sub-pixel 200a has good display brightness at a normal viewing angle in both shared display mode and privacy display mode, the opening area of ​​the first sub-pixel 200a needs to be ensured not to be too small. Specifically, the opening area of ​​the first sub-pixel 200a can be set to be larger than the opening area of ​​the second sub-pixel portion 200b2, that is, the opening area of ​​the first sub-pixel 200a is larger than the opening area of ​​the inner part of the second sub-pixel 200b, to ensure that the first sub-pixel 200a has good display brightness at a normal viewing angle. It should be noted that Figure 13 only shows, by example, the opening width (or diameter) of the first sub-pixel 200a in the second direction as k1, and the opening width (or diameter) of the second sub-pixel portion 200b2 in the second direction as k21, where k1 > k21. Figure 13 illustrates the relationship between pixel opening areas through the relationship between the width (diameter) of the pixel openings.

[0077] Figure 14 is a cross-sectional schematic diagram along section line E-E' in Figure 1. Referring to Figures 1 and 14, the second sub-pixel 200b includes a first-color second sub-pixel 200ba, a second-color second sub-pixel 200bb, and a third-color second sub-pixel 200bc. The luminous efficiency of the first-color second sub-pixel 200ba is greater than that of the second-color second sub-pixel 200bb, and the luminous efficiency of the second-color second sub-pixel 200bb is greater than that of the third-color second sub-pixel 200bc. In the first-color second sub-pixel 200ba, the length of the first sub-pixel portion 200b1 located on one side of the second sub-pixel portion 200b2 in the second direction X2 is d11, and the length of the second sub-pixel portion 200b2 is... The length of 00b2 in the second direction X2 is d12; in the second sub-pixel 200bb of the second color, the length of the first sub-pixel portion 200b1 located on one side of the second sub-pixel portion 200b2 in the second direction X2 is d21, and the length of the second sub-pixel portion 200b2 in the second direction X2 is d22; in the second sub-pixel 200bc of the third color, the length of the first sub-pixel portion 200b1 located on one side of the second sub-pixel portion 200b2 in the second direction X2 is d31, and the length of the second sub-pixel portion 200b2 in the second direction X2 is d32; the second direction X2 is parallel to the plane where the substrate 100 is located; wherein, d11 / d12>d21 / d22>d31 / d32.

[0078] Specifically, referring to Figures 1 and 14, the second sub-pixel 200b includes a first-color second sub-pixel 200ba, a second-color second sub-pixel 200bb, and a third-color second sub-pixel 200bc. The first-color second sub-pixel 200ba, the second-color second sub-pixel 200bb, and the third-color second sub-pixel 200bc emit different colors of light to achieve the color display effect of the display panel 10. The different colors of the second sub-pixels 200b have different luminous efficiencies. The luminous efficiency of the first-color second sub-pixel 200ba is greater than that of the second-color second sub-pixel 200bb, and the luminous efficiency of the second-color second sub-pixel 200bb is greater than that of the third-color second sub-pixel 200bc. For example, the first-color second sub-pixel 200ba can be a second sub-pixel 200b emitting green light, the second-color second sub-pixel 200bb can be a second sub-pixel 200b emitting red light, and the third-color second sub-pixel 200bc can be a second sub-pixel 200b emitting blue light.

[0079] Furthermore, the second sub-pixel 200b can be finely adjusted based on the luminous efficiency of different second sub-pixels 200b. Specifically, referring to Figure 14, in the first color second sub-pixel 200ba, the length of the first sub-pixel segment 200b1 located on one side of the second sub-pixel segment 200b2 in the second direction X2 is d11, and the length of the second sub-pixel segment 200b2 in the second direction X2 is d12. Here, d11 / d12 can be understood as the length ratio of the first sub-pixel segment 200b1 and the second sub-pixel segment 200b2 in the first color second sub-pixel 200ba, or it can be understood as the area ratio of the first sub-pixel segment 200b1 in the first color second sub-pixel 200ba. Similarly, referring to Figure 14, in the second sub-pixel 200bb of the second color, the length of the first sub-pixel portion 200b1 located on one side of the second sub-pixel portion 200b2 in the second direction X2 is d21, and the length of the second sub-pixel portion 200b2 in the second direction X2 is d22. Here, d21 / d22 can be understood as the length ratio of the first sub-pixel portion 200b1 and the second sub-pixel portion 200b2 in the second sub-pixel 200bb of the second color, or it can be understood as the area ratio of the first sub-pixel portion 200b1 in the second sub-pixel 200bb of the second color. Similarly, referring to Figure 14, in the second sub-pixel 200bc of the third color, the length of the first sub-pixel portion 200b1 located on one side of the second sub-pixel portion 200b2 in the second direction X2 is d31, and the length of the second sub-pixel portion 200b2 in the second direction X2 is d32. Here, d31 / d32 can be understood as the length ratio of the first sub-pixel portion 200b1 and the second sub-pixel portion 200b2 in the second sub-pixel 200bc of the third color, or it can be understood as the area ratio of the first sub-pixel portion 200b1 in the second sub-pixel 200bc of the third color.

[0080] Furthermore, referring to Figure 14, since the luminous efficiency of the second sub-pixel 200ba of the first color is greater than that of the second sub-pixel 200bb of the second color, d11 / d12 is adjusted to be greater than d21 / d22. This ensures that the area of ​​the second sub-pixel portion 200b2 with higher luminous efficiency is relatively small, while the area of ​​the first sub-pixel portion 200b1 is relatively large, thus ensuring the overall light emission balance of the display panel 10 and its overall display effect. Similarly, since the luminous efficiency of the second sub-pixel 200bb of the second color is greater than that of the second sub-pixel 200bc of the third color, d21 / d22 is adjusted to be greater than d31 / d32. This ensures that the area of ​​the second sub-pixel portion 200b2 with higher luminous efficiency is relatively small, while the area of ​​the first sub-pixel portion 200b1 is relatively large, thus ensuring the overall light emission balance of the display panel 10 and its overall display effect.

[0081] Figure 15 is a schematic diagram of the first cross-section along section line F-F' in Figure 3. Referring to Figures 3 and 15, the second sub-pixel 200b further includes a second light-emitting structure 223 located between the second anode 221 and the second cathode 222. The second light-emitting structure 223 includes a single-layer light-emitting unit layer. The display panel 10 also includes a first color sub-pixel 20a, a second color sub-pixel 20b, and a third color sub-pixel 20c. The luminous efficiency of the first color sub-pixel 20a is greater than that of the second color sub-pixel 20b, and the luminous efficiency of the second color sub-pixel 20b is greater than that of the third color sub-pixel 20c. Among the first color sub-pixels 20a, the second sub-pixel 200b located on one side of the first sub-pixel 200a... The length of sub-pixel 20b in the second direction X2 is d41, and the length of the first sub-pixel 200a in the second direction X2 is d42; in the second color sub-pixel 20b, the length of the second sub-pixel 200b located to one side of the first sub-pixel 200a in the second direction X2 is d51, and the length of the first sub-pixel 200a in the second direction X2 is d52; in the third color sub-pixel 20c, the length of the second sub-pixel 20b located to one side of the first sub-pixel 200a in the second direction X2 is d61, and the length of the first sub-pixel 200a in the second direction X2 is d62; the second direction X2 is parallel to the plane where the substrate is located; wherein, d41 / d42>d51 / d52>d61 / d62.

[0082] Specifically, referring to Figures 3 and 15, the display panel 10 further includes a first color sub-pixel 20a, a second color sub-pixel 20b, and a third color sub-pixel 20c. The first color sub-pixel 20a, the second color sub-pixel 20b, and the third color sub-pixel 20c emit different light rays, achieving a color display effect for the entire display panel 10. The luminous efficiency of the different color sub-pixels 200 is different, with the luminous efficiency of the first color sub-pixel 20a being greater than that of the second color sub-pixel 20b, and the luminous efficiency of the second color sub-pixel 20b being greater than that of the third color sub-pixel 20c. For example, the first color sub-pixel 20a can be a green sub-pixel, the second color sub-pixel 20b can be a red sub-pixel, and the third color sub-pixel 20c can be a blue sub-pixel.

[0083] Furthermore, referring to Figure 15, in the first color sub-pixel 20a, the length of the second sub-pixel 200b located on one side of the first sub-pixel 200a in the second direction X2 is d41, and the length of the first sub-pixel 200a in the second direction X2 is d42. The ratio of d41 to d42 can be understood as reflecting the spatial proportion of the first sub-pixel 200a and the spatial proportion of the second sub-pixel 200b in the first color sub-pixel 20a. The larger the value of d41 to d42, the larger the spatial proportion of the second sub-pixel 200b. Similarly, referring to Figure 15, in the second color sub-pixel 20b, the length of the second sub-pixel 200b located on one side of the first sub-pixel 200a in the second direction X2 is d51, and the length of the first sub-pixel 200a in the second direction X2 is d52. Here, d51 / d52 can be understood to reflect the spatial proportion of the first sub-pixel 200a and the spatial proportion of the second sub-pixel 20b in the second color sub-pixel 20b. The larger the value of d51 / d52, the larger the spatial proportion of the second sub-pixel 200b. Similarly, referring to Figure 15, in the third color sub-pixel 20c, the length of the second sub-pixel 200b located on one side of the first sub-pixel 200a in the second direction X2 is d61, and the length of the first sub-pixel 200a in the second direction X2 is d62. Here, d61 / d62 can be understood to reflect the spatial proportion of the first sub-pixel 200a and the spatial proportion of the second sub-pixel 200b in the third color sub-pixel 20c. The larger the value of d61 / d62, the larger the spatial proportion of the second sub-pixel 200b.

[0084] Furthermore, the sub-pixels 200 can be finely adjusted based on their luminous efficiency. Specifically, if the luminous efficiency of the first color sub-pixel 20a is greater than that of the second color sub-pixel 20b, then d41 / d42 can be adjusted to be greater than d51 / d52. In other words, the sub-pixel with higher luminous efficiency will have a smaller area proportion for the first sub-pixel 200a and a lower area proportion for the second sub-pixel 200b, thus balancing the overall display effect of the display panel 10. Similarly, if the luminous efficiency of the second color sub-pixel 20b is greater than that of the third color sub-pixel 20c, then d51 / d52 can be adjusted to be greater than d61 / d62. This means that the sub-pixel with higher luminous efficiency will have a smaller area proportion for the first sub-pixel 200a and a lower area proportion for the second sub-pixel 200b, thus balancing the overall display effect of the display panel 10. In other words, by combining the first sub-pixel 200a to ensure light emission from a positive viewing angle and the second sub-pixel 200b to ensure light emission from a wide viewing angle, the proportion of the first sub-pixel 200a and the second sub-pixel 200b in sub-pixels 200 with different light emission efficiencies can be adaptively adjusted to improve the overall display effect of the display panel 10.

[0085] Figure 16 is a schematic diagram of the connection between a first pixel circuit and a first sub-pixel and a second sub-pixel according to an embodiment of this application. Figure 17 is another cross-sectional schematic diagram along section line B-B' in Figure 3. Referring to Figures 16 and 17, the first sub-pixel 200a includes a first pixel circuit 21 and a first light-emitting element 22 electrically connected, and the second sub-pixel 200b includes a second pixel circuit 23 and a second light-emitting element 24 electrically connected; the second pixel circuit 23 reuses the first pixel circuit 21; the display panel 10 also includes a switch unit 30 and a control module 40. The switch unit 30 is connected in series between the second pixel circuit 23 and the second light-emitting element 24, and the control module 40 is electrically connected to the switch unit 30; the control module 40 is used to control the switch unit 30 to conduct in the shared display mode, so as to conduct the second pixel circuit 23 and the second light-emitting element 24; the control module 40 is also used to control the switch unit 30 to disconnect in the privacy display mode, so as to disconnect the second pixel circuit 23 and the second light-emitting element 24.

[0086] Specifically, referring to Figures 16 and 17, the first sub-pixel 200a includes a first pixel circuit 21 and a first light-emitting element 22. The first pixel circuit 21 is electrically connected to the first light-emitting element 22. When the first pixel circuit 21 is turned on, it can drive the first light-emitting element 22 to emit light, thus realizing the light-emitting display of the first sub-pixel 200a. Referring to Figures 16 and 17, the second sub-pixel 200b includes a second pixel circuit 23 and a second light-emitting element 24. The second pixel circuit 23 is electrically connected to the second light-emitting element 24. When the second pixel circuit 23 is turned on, it can drive the second light-emitting element 24 to emit light, thus realizing the light-emitting display of the second sub-pixel 200b. It should be noted that the pixel circuit can be a "2T1C" structure, a "6T2C" structure, a "7T1C" structure, or an "8T1C" structure. Here, "T" represents a transistor and "C" represents a capacitor. This application embodiment does not limit the specific structure of the pixel circuit. In Figure 17, only the transistor shown represents the pixel circuit.

[0087] Furthermore, referring to Figures 16 and 17, since the second light-emitting element 24 surrounds at least part of the first light-emitting element 22 to compensate for the wide-viewing-angle light emitted by the first light-emitting element 22, and the distance between the first light-emitting elements 22 and 24 is small, the first light-emitting element 22 and the second light-emitting element 24 can be configured to share a pixel circuit and a first pixel circuit 21. This eliminates the need to add a pixel circuit for the second light-emitting element 24, ensuring a simple pixel circuit configuration in the display panel 10. Moreover, since the first light-emitting element 22 emits light while the second light-emitting element 24 does not emit light in the privacy display mode, meaning there is a difference in the light emission stages of the first and second light-emitting elements 22 and 24, a switching unit 30 can be provided between the first pixel circuit 21 and the second light-emitting element 24. Controlling the on and off states of the switching unit 30 allows for the control of the light emission of the first and second light-emitting elements 22 and 24.

[0088] Specifically, referring to Figures 16 and 17, the control module 40 is used to control the switch unit 30 to conduct in the shared display mode, thereby connecting the second pixel circuit 23 and the second light-emitting element 24, so that both the first light-emitting element 22 and the second light-emitting element 24 emit light for display. The control module 40 is also used to control the switch unit 30 to deactivate in the privacy display mode, thereby disconnecting the second pixel circuit 23 and the second light-emitting element 24, so that the first light-emitting element 22 emits light for display, while the second light-emitting element 24 does not emit light for display.

[0089] Figure 18 is a structural schematic diagram of another display panel provided in an embodiment of this application, and Figure 19 is another cross-sectional schematic diagram along section line B-B' in Figure 3. Referring to Figures 18 and 19, the display panel 10 further includes a plurality of sub-pixel rows 2000. The sub-pixel rows 2000 include a plurality of first sub-pixels 200a arranged along a third direction X3, and a plurality of second sub-pixels 200b arranged along a third direction X3. The plurality of sub-pixel rows 2000 are arranged along a fourth direction X4. The third direction X3 and the fourth direction X4 intersect and are both parallel to the plane where the substrate 100 is located. The first sub-pixel 200a includes a first pixel circuit 21 and a first light-emitting element 22 electrically connected. The second sub-pixel 200b includes a second pixel circuit 23 and a second light-emitting element 24 electrically connected. The first pixel circuit 21 and the second pixel circuit 23 are independently arranged, and the first pixel circuit 21 and the second pixel circuit 23 in the same sub-pixel row 200 are arranged along a third direction X3. The display panel 10 also includes a plurality of scanning signal lines 400. Each scan signal line 400 includes a first scan signal line 410 and a second scan signal line 420. Both the first scan signal line 410 and the second scan signal line 420 extend along a third direction X3 and are arranged along a fourth direction X4. In the first pixel circuit 21 and the second pixel circuit 23 in the same sub-pixel row 2000, the first pixel circuit 21 is electrically connected to the first scan signal line 410, and the second pixel circuit 23 is electrically connected to the second scan signal line 420. During the shared display stage, the scan signal in the first scan signal line 410 controls the first pixel circuit 21 to conduct in order to control the first light-emitting element 22 to emit light, and the scan signal in the second scan signal line 420 controls the second pixel circuit 23 to conduct in order to control the second light-emitting element 24 to emit light. During the privacy display stage, the scan signal in the first scan signal line 410 controls the first pixel circuit 21 to conduct in order to control the first light-emitting element 22 to emit light, and the scan signal in the second scan signal line 420 controls the second pixel circuit 23 to turn off in order to control the second light-emitting element 24 to not emit light.

[0090] Specifically, referring to Figure 18, the display panel 10 also includes a plurality of pixel circuits and signal lines 400 located on one side of the substrate 100. The pixel circuits may include transistors and capacitors, and the signal lines 400 may include scan signal lines, data signal lines and power signal lines, etc. The pixel circuits are electrically connected to the scan signal lines, data signal lines and power signal lines, etc., respectively, and are used to convert the data signal provided by the data signal lines and the power signal provided by the power signal lines into driving current signals to drive the light-emitting elements to emit light under the action of the scan signal provided by the scan signal lines, so as to achieve the purpose of driving the light-emitting elements to display light emission.

[0091] Specifically, referring to Figures 18 and 19, the first sub-pixel 200a includes a first pixel circuit 21 and a first light-emitting element 22 electrically connected. The first pixel circuit 21 provides an electrical signal to the first light-emitting element 22, driving the first light-emitting element 22 to emit light for display. The second sub-pixel 200b includes a second pixel circuit 23 and a second light-emitting element 24 electrically connected. The second pixel circuit 23 provides an electrical signal to the second light-emitting element 24, driving the second light-emitting element 24 to emit light for display. The first pixel circuit 21 and the second pixel circuit 23 in the same sub-pixel row 200 are arranged along a third direction X3.

[0092] Referring to Figure 18, the display panel 10 further includes multiple scan signal lines 400, including a first scan signal line 410 and a second scan signal line 420. The first scan signal line 410 is electrically connected to a first pixel circuit 21 in the same sub-pixel row 2000. When the first scan signal line 410 provides a scan control signal, the first pixel circuit 21 can drive the first light-emitting element 22 to emit light for display. The second scan signal line 420 is electrically connected to a second pixel circuit 23 in the same sub-pixel row 2000. When the second scan signal line 420 provides a scan control signal, the second pixel circuit 23 can drive the second light-emitting element 24 to emit light for display.

[0093] Specifically, in shared display mode, both the first light-emitting element 22 and the second light-emitting element 24 emit light. In privacy display mode, the first light-emitting element 22 emits light, while the second light-emitting element 24 does not. This means that the light-emitting stages of different light-emitting elements or their components differ. Therefore, the first pixel circuit 21 and the second pixel circuit 23 are independently configured. The first pixel circuit 21 and the second pixel circuit 23 independently control the light-emitting stages and brightness of the first light-emitting element 22 and the second light-emitting element 24, ensuring that the light-emitting control logic of the first light-emitting element 22 and the second light-emitting element 24 is simple and efficient.

[0094] Specifically, referring to Figure 18, during the shared display phase, the scan signal in the first scan signal line 410 controls the first pixel circuit 21 to be turned on to control the first light-emitting element 22 to emit light, and the scan signal in the second scan signal line 420 controls the second pixel circuit 23 to be turned on to control the second light-emitting element 24 to emit light, thereby enabling both the first sub-pixel 200a and the second sub-pixel 200b to emit light. During the privacy display phase, the scan signal in the first scan signal line 410 controls the first pixel circuit 21 to be turned on to control the first light-emitting element 22 to emit light, and the scan signal in the second scan signal line 420 controls the second pixel circuit 23 to be turned off to control the second light-emitting element 24 to not emit light, thereby enabling the first sub-pixel 200a to emit light while the second sub-pixel 200b does not emit light.

[0095] Referring again to Figures 1 and 2, the display panel 10 further includes a light-emitting adjustment structure 300 located on the side of the sub-pixel 200 away from the substrate 100. The light-emitting adjustment structure 300 has a plurality of first openings 300a and a plurality of second openings 300b, both of which penetrate the light-emitting adjustment structure 300. The projection of the first opening 300a onto the plane of the substrate 100 is the first opening projection, and the projection of the second opening 300b onto the plane of the substrate 100 is the second opening projection. The projection of the pixel opening of the first sub-pixel 200a onto the plane of the substrate 100 is the first pixel opening projection, and the projection of the pixel opening of the second sub-pixel 200b onto the plane of the substrate 100 is the second pixel opening projection. The first opening projection and the first pixel opening projection at least partially overlap, and the second opening projection and the second pixel opening projection at least partially overlap. The minimum distance between the first opening projection and the first pixel opening projection is less than the minimum distance between the second opening projection and the second pixel opening projection.

[0096] Specifically, referring to Figure 2, the display panel 10 includes a light emission adjustment structure 300 disposed on the side of the sub-pixel 200 away from the substrate 100. The light emission adjustment structure 300 can adjust the emitted light to ensure the light emission effect of the sub-pixel 200 in the display panel 10 and improve the overall display effect of the display panel 10.

[0097] Furthermore, the light emission adjustment structure 300 includes a first opening 300a and a second opening 300b, both of which penetrate the light emission adjustment structure 300. The projection of the first opening 300a onto the plane of the substrate 100 at least partially overlaps with the projection of the pixel opening of the first sub-pixel 200a (refer to the first pixel opening 102a in Figure 2) onto the plane of the substrate 100. This can be understood as the first opening 300a being a hollow area of ​​the light emission adjustment structure 300. The first sub-pixel 200a emits light through the corresponding hollow area, ensuring the light emission effect of the first sub-pixel 200a. Similarly, the projection of the second opening 300b onto the plane of the substrate 100 at least partially overlaps with the projection of the pixel opening of the second sub-pixel 200b (refer to the second pixel opening 102b in Figure 2) onto the plane of the substrate 100. It can also be understood that the second opening 300b is the hollow area of ​​the light emission adjustment structure 300. The second sub-pixel 200b realizes the emission of light through the corresponding hollow area, ensuring the light emission effect of the second sub-pixel 200b.

[0098] Furthermore, to ensure that the maximum light emission angle of the first sub-pixel 200a is less than that of the second sub-pixel 200b, the sizes of the first opening 300a and the second opening 300b of the light emission adjustment structure 300 can be adjusted. Specifically, to ensure the positive viewing angle light emission effect of the first sub-pixel 200a, the distance between the projection of the first opening and the projection of the first pixel opening is small; to ensure the wide viewing angle light emission effect of the second sub-pixel 200b, the distance between the projection of the second opening and the projection of the second pixel opening is large. For example, referring to Figure 2, along the second direction X2, the minimum distance between the projection of the first opening and the projection of the first pixel opening is m1, and the minimum distance between the projection of the second opening and the projection of the second pixel opening is m2. Adjusting m1 < m2 can ensure the overall display effect of the display panel 10.

[0099] Referring again to Figures 3 and 4, the display panel 10 further includes a light-emitting adjustment structure 300 located on the side of the sub-pixel 200 away from the substrate 100. The light-emitting adjustment structure 300 is provided with a plurality of first openings 300a and a light-shielding portion 300c outside the first openings 300a. The first openings 300a penetrate the light-emitting adjustment structure 300. Along the first direction X1, the first openings 300a overlap at least partially with the first sub-pixel 200a, and the light-shielding portion 300c overlaps at least partially with the second sub-pixel 200b.

[0100] Referring to Figures 3 and 4, the display panel 10 includes a light emission adjustment structure 300. The light emission adjustment structure 300 is located on the side of the sub-pixel 200 away from the substrate 100, and can adjust the light emission of the sub-pixel 200 to ensure the display effect of the display panel 10. Specifically, referring to Figure 4, the light emission adjustment structure 300 has multiple first openings 300a penetrating through it. The orthographic projection of the first openings 300a onto the substrate 100 overlaps with the orthographic projection of the first sub-pixel 200a onto the substrate 100, thus allowing light emitted from the first sub-pixel 200a to exit through the first openings 300a. It should be noted that by adjusting the light emission of the first sub-pixel 200a, the first openings 300a can ensure that the first sub-pixel 200a emits light from a positive viewing angle. Furthermore, referring to Figure 4, the light emission adjustment structure 300 also includes a light-shielding portion 300c located outside the first opening 300a, and the light-shielding portion 300c overlaps with the second sub-pixel 200b at least partially. Therefore, the light-shielding portion 300c will block the light emission from the frontal view of the second sub-pixel 200b, but the light emitted from the second sub-pixel 200b at a wide viewing angle can be emitted through the first opening 300a, thereby realizing the wide viewing angle light emission of the second sub-pixel 200b.

[0101] Referring again to Figures 2 and 4, the display panel 10 further includes a light emission adjustment structure 300 located on the side of the sub-pixel 200 away from the substrate 100. The light emission adjustment structure 300 includes a first light-shielding layer 311 and a second light-shielding layer 312. The second light-shielding layer 312 is located on the side of the first light-shielding layer 311 away from the substrate 100. The first light-shielding layer 311 is provided with a plurality of first sub-openings 321, which penetrate the first light-shielding layer 311. The second light-shielding layer 312 is provided with a plurality of second sub-openings 322, which penetrate the second light-shielding layer 312. Along the first direction X1, both the first sub-openings 321 and the second sub-openings 322 overlap with the first sub-pixel 200a.

[0102] Specifically, referring to Figures 2 and 4, the light emission adjustment structure 300 includes a first light-shielding layer 311 and a second light-shielding layer 312 disposed along the first direction X1. The second light-shielding layer 312 is located on the side of the first light-shielding layer 311 away from the substrate 100. The light emission angle of the first sub-pixel 200a is adjusted by the cooperation of the first light-shielding layer 311 and the second light-shielding layer 312.

[0103] The first light-shielding layer 311 includes multiple first sub-openings 321 penetrating the first light-shielding layer 311, and the second light-shielding layer 312 includes multiple second sub-openings 322 for observing the second light-shielding layer 312. When light is transmitted to the first light-shielding layer 311 and the second light-shielding layer 312, it is blocked, but when light is transmitted to the first sub-openings 321 and the second sub-openings 322, it can continue to be emitted. The first sub-aperture 321 and the second sub-aperture 322 are both overlapped with the first sub-pixel 200a along the first direction X1. The first sub-aperture 321 is closer to the first sub-pixel 200a than the second sub-aperture 322. Therefore, the first sub-aperture 321 can block light rays with a larger viewing angle emitted from the edge area of ​​the first sub-pixel 200a (refer to light ray n2 in Figure 2), while the second sub-aperture 322 can block light rays with a relatively smaller viewing angle emitted from the edge area of ​​the first sub-pixel 200a (refer to light ray n1 in Figure 2). Thus, the first light-shielding layer 311 and the second light-shielding layer 312, which are disposed in different layers, can block light rays with a large viewing angle from the first sub-pixel 200a, ensuring the light emission effect of the first sub-pixel 200a at a positive viewing angle. Furthermore, the combined use of the first light-shielding layer 311 and the second light-shielding layer 312, which are disposed in different layers, can effectively reduce the area of ​​the light-shielding layer 310, which is parallel to the plane of the substrate 100, thus improving the overall display effect of the display panel 10.

[0104] Based on the same inventive concept, this application also provides a display device. FIG20 is a schematic diagram of the structure of a display device provided in this application embodiment. As shown in FIG20, the display device 1 includes the display device 10 described in any of the above embodiments. Therefore, the display device 1 provided in this application embodiment has the corresponding beneficial effects of the above embodiments, which will not be repeated here. The display device 1 can be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device.

[0105] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the scope of protection of this application. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A display panel, characterized in that, The display panel includes a substrate and a plurality of sub-pixels located on one side of the substrate; the plurality of sub-pixels include a first sub-pixel and a second sub-pixel that emit light of the same color, wherein the maximum light emission angle of the first sub-pixel is smaller than the maximum light emission angle of the second sub-pixel; the display panel has two display modes: a shared display mode and a privacy display mode; in the shared display mode, both the first sub-pixel and the second sub-pixel emit light; in the privacy display mode, the first sub-pixel emits light, and the second sub-pixel does not emit light; the first sub-pixel includes a first anode and a first cathode, which form a first microcavity structure; the second sub-pixel includes a second anode and a second cathode, which form a second microcavity structure. Along a first direction, the distance between the first anode and the first cathode is L1, and the distance between at least a portion of the second anode and at least a portion of the second cathode is L2; ​​the first direction is the thickness direction of the display panel; the emission wavelength of the first sub-pixel is λ1, and the emission wavelength of the second sub-pixel is λ2; where L1=n×(λ1 / 2), L2≠m×(λ2 / 2), and n and m are both positive integers.

2. The display panel according to claim 1, characterized in that, The second sub-pixel includes a first sub-pixel portion and a second sub-pixel portion, the first sub-pixel portion surrounding at least a portion of the second sub-pixel portion; the second anode includes a connected first anode portion and a second anode portion, the second cathode includes a connected first cathode portion and a second cathode portion, the first sub-pixel portion includes the first anode portion and the first cathode portion, the second sub-pixel portion includes the second anode portion and the second cathode portion; the second microcavity structure includes a first microcavity structure portion formed by the first anode portion and the first cathode portion and a second microcavity structure portion formed by the second anode portion and the second cathode portion; along the first direction, at least the distance between the first anode portion and the first cathode portion is L2.

3. The display panel according to claim 2, characterized in that, Along the first direction, the distance between the second anode portion and the second cathode portion is L2.

4. The display panel according to claim 2, characterized in that, Along the first direction, the distance between the second anode portion and the second cathode portion is L3; where L3 = p × (λ2 / 2), and p is a positive integer.

5. The display panel according to claim 1, characterized in that, The second sub-pixel surrounds at least a portion of the first sub-pixel.

6. The display panel according to claim 1, characterized in that, The first sub-pixel further includes a first light-emitting structure located between the first anode and the first cathode, the first light-emitting structure including multiple layers of first light-emitting material; the second sub-pixel further includes a second light-emitting structure located between the second anode and the second cathode, the second light-emitting structure including multiple layers of second light-emitting material. The number of first luminescent material layers in the first luminescent structure is different from the number of second luminescent material layers in at least a portion of the second luminescent structure, and / or the thickness of at least one first luminescent material layer is different from the thickness of at least a portion of at least one second luminescent material layer.

7. The display panel according to claim 1, characterized in that, The first sub-pixel further includes a first light-emitting structure located between the first anode and the first cathode. The first light-emitting structure includes a first light-emitting unit layer, a first charge-generating layer and a second light-emitting unit layer stacked along the first direction. The first light-emitting unit layer, the first charge-generating layer and the second light-emitting unit layer each include multiple layers of first light-emitting material.

8. The display panel according to claim 7, characterized in that, The second sub-pixel further includes a second light-emitting structure located between the second anode and the second cathode, the second light-emitting structure including at least one light-emitting unit layer; the light-emitting unit layer includes multiple layers of second light-emitting material.

9. The display panel according to claim 8, characterized in that, The second light-emitting structure includes a third light-emitting unit layer, a second charge-generating layer, and a fourth light-emitting unit layer stacked along the first direction; the third light-emitting unit layer, the second charge-generating layer, and the fourth light-emitting unit layer each include multiple layers of the second light-emitting material.

10. The display panel according to claim 8, characterized in that, The second light-emitting structure includes a fifth light-emitting unit layer; the fifth light-emitting unit layer includes multiple layers of the second light-emitting material.

11. The display panel according to claim 8, characterized in that, The second sub-pixel includes a first sub-pixel portion and a second sub-pixel portion, the first sub-pixel portion surrounding at least a portion of the second sub-pixel portion; the second anode includes a connected first anode portion and a second anode portion, the second cathode includes a connected first cathode portion and a second cathode portion, the first sub-pixel portion includes the first anode portion and the first cathode portion, the second sub-pixel portion includes the second anode portion and the second cathode portion; the first sub-pixel portion further includes a first light-emitting structure portion located between the first anode portion and the first cathode portion, the second sub-pixel portion further includes a second light-emitting structure portion located between the second anode portion and the second cathode portion; the first light-emitting structure portion includes a sixth light-emitting unit layer; the second light-emitting structure portion includes a seventh light-emitting unit layer, a third charge-generating layer and an eighth light-emitting unit layer stacked along the first direction; the sixth light-emitting unit layer, the seventh light-emitting unit layer, the third charge-generating layer and the eighth light-emitting unit layer all include multiple layers of the second light-emitting material.

12. The display panel according to claim 11, characterized in that, The sixth light-emitting unit layer includes a first hole injection layer, a first hole transport layer, a first composite light-emitting layer, a first electron transport layer, and a first electron injection layer stacked along the first direction; the seventh light-emitting unit layer includes a second hole injection layer, a second hole transport layer, a second composite light-emitting layer, and a second electron transport layer stacked along the first direction; the third charge generation layer includes an N-type charge generation layer and a P-type charge generation layer stacked along the first direction; the eighth light-emitting unit layer includes a third composite light-emitting layer, a third electron transport layer, and a second electron injection layer stacked along the first direction; the first hole injection layer and the second hole injection layer are co-layered, the first hole transport layer and the second hole transport layer are co-layered, the first composite light-emitting layer and the second composite light-emitting layer are co-layered, the first electron transport layer and the second electron transport layer or the third electron transport layer are co-layered, and the first electron injection layer and the second electron injection layer are co-layered.

13. The display panel according to claim 11, characterized in that, The opening area of ​​the second sub-pixel is greater than or equal to the opening area of ​​the first sub-pixel; the opening area of ​​the second sub-pixel portion is less than the opening area of ​​the first sub-pixel.

14. The display panel according to claim 11, characterized in that, The second sub-pixel includes a first-color second sub-pixel, a second-color second sub-pixel, and a third-color second sub-pixel; wherein, the luminous efficiency of the first-color second sub-pixel is greater than that of the second-color second sub-pixel, and the luminous efficiency of the second-color second sub-pixel is greater than that of the third-color second sub-pixel; in the first-color second sub-pixel, the length of the first sub-pixel portion located on one side of the second sub-pixel portion in the second direction is d11, and the length of the second sub-pixel portion in the second direction is d12; in the second-color second sub-pixel, the length of the first sub-pixel portion located on one side of the second sub-pixel portion in the second direction is d21, and the length of the second sub-pixel portion in the second direction is d22; in the third-color second sub-pixel, the length of the first sub-pixel portion located on one side of the second sub-pixel portion in the second direction is d31, and the length of the second sub-pixel portion in the second direction is d32; the second direction is parallel to the plane of the substrate; wherein, d11 / d12 > d21 / d22 > d31 / d32.

15. The display panel according to claim 5, characterized in that, The second sub-pixel further includes a second light-emitting structure located between the second anode and the second cathode, the second light-emitting structure including a single-layer light-emitting unit layer; the display panel further includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, the luminous efficiency of the first color sub-pixel is greater than the luminous efficiency of the second color sub-pixel, and the luminous efficiency of the second color sub-pixel is greater than the luminous efficiency of the third color sub-pixel; in the first color sub-pixel, the length of the second sub-pixel located on one side of the first sub-pixel in the second direction is d41, and the length of the first sub-pixel in the second direction is d42; in the second color sub-pixel, the length of the second sub-pixel located on one side of the first sub-pixel in the second direction is d51, and the length of the first sub-pixel in the second direction is d52; in the third color sub-pixel, the length of the second sub-pixel located on one side of the first sub-pixel in the second direction is d61, and the length of the first sub-pixel in the second direction is d62; the second direction is parallel to the plane of the substrate; wherein, d41 / d42 > d51 / d52 > d61 / d62.

16. The display panel according to claim 5, characterized in that, The first sub-pixel includes a first pixel circuit and a first light-emitting element electrically connected together; the second sub-pixel includes a second pixel circuit and a second light-emitting element electrically connected together; the second pixel circuit reuses the first pixel circuit; the display panel further includes a switch unit and a control module, the switch unit being connected in series between the second pixel circuit and the second light-emitting element, and the control module being electrically connected to the switch unit; the control module is used to control the switch unit to be turned on in the shared display mode to connect the second pixel circuit and the second light-emitting element; the control module is also used to control the switch unit to be turned off in the privacy display mode to disconnect the second pixel circuit and the second light-emitting element.

17. The display panel according to claim 5, characterized in that, The display panel further includes multiple sub-pixel rows, each sub-pixel row comprising multiple first sub-pixels arranged along a third direction and multiple second sub-pixels arranged along the third direction, the multiple sub-pixel rows being arranged along a fourth direction; the third direction and the fourth direction intersect and are both parallel to the plane of the substrate; each first sub-pixel includes an electrically connected first pixel circuit and a first light-emitting element, and each second sub-pixel includes an electrically connected second pixel circuit and a second light-emitting element; the first pixel circuit and the second pixel circuit are independently configured, and the first pixel circuit and the second pixel circuit in the same sub-pixel row are arranged along the third direction; the display panel further includes multiple scanning lines. The signal lines include a first scan signal line and a second scan signal line, both extending along the third direction and arranged along the fourth direction; in the first pixel circuit and the second pixel circuit in the same sub-pixel row, the first pixel circuit is electrically connected to the first scan signal line, and the second pixel circuit is electrically connected to the second scan signal line; in the shared display stage, the scan signal in the first scan signal line controls the first pixel circuit to conduct in order to control the first light-emitting element to emit light, and the scan signal in the second scan signal line controls the second pixel circuit to conduct in order to control the second light-emitting element to emit light; During the privacy display phase, the scanning signal in the first scanning signal line controls the first pixel circuit to be turned on to control the first light-emitting element to emit light, and the scanning signal in the second scanning signal line controls the second pixel circuit to be turned off to control the second light-emitting element not to emit light.

18. The display panel according to claim 2, characterized in that, The display panel further includes a light emission adjustment structure located on the side of the sub-pixel away from the substrate. The light emission adjustment structure is provided with a plurality of first openings and a plurality of second openings, and the first openings and the second openings both penetrate the light emission adjustment structure. The projection of the first opening onto the plane of the substrate is the first opening projection, the projection of the second opening onto the plane of the substrate is the second opening projection, the projection of the pixel opening of the first sub-pixel onto the plane of the substrate is the first pixel opening projection, and the projection of the pixel opening of the second sub-pixel onto the plane of the substrate is the second pixel opening projection; the first opening projection and the first pixel opening projection at least partially overlap, and the second opening projection and the second pixel opening projection at least partially overlap; the minimum distance between the first opening projection and the first pixel opening projection is less than the minimum distance between the second opening projection and the second pixel opening projection.

19. The display panel according to claim 5, characterized in that, The display panel further includes a light-emitting adjustment structure located on the side of the sub-pixel away from the substrate. The light-emitting adjustment structure is provided with a plurality of first openings and a light-blocking portion outside the first openings. The first openings penetrate the light-emitting adjustment structure. Along the first direction, the first opening at least partially overlaps with the first sub-pixel, and the light-blocking portion at least partially overlaps with the second sub-pixel.

20. The display panel according to claim 1, characterized in that, The display panel further includes a light emission adjustment structure located on the side of the sub-pixel away from the substrate. The light emission adjustment structure includes a first light-shielding layer and a second light-shielding layer. The second light-shielding layer is located on the side of the first light-shielding layer away from the substrate. The first light-shielding layer has a plurality of first sub-openings that penetrate the first light-shielding layer. The second light-shielding layer has a plurality of second sub-openings that penetrate the second light-shielding layer. Along the first direction, both the first sub-openings and the second sub-openings overlap with the first sub-pixel.

21. A display device, characterized in that, Includes the display panel as described in any one of claims 1-20.

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