Display panel and display apparatus

Abstract

Provided are a display panel and a display apparatus. The display panel comprises: a substrate (100), and a display structure layer (12) and a lens layer (41) that are arranged on the substrate (100), wherein the display structure layer (12) comprises a plurality of first-type pixel units, and the first-type pixel units comprise at least two types of sub-pixels that emit light of different colors; and the lens layer (41) comprises at least two types of lens units corresponding to the at least two types of sub-pixels. The orthographic projections of at least one type of lens units on the substrate (100) at least partially overlap with the orthographic projections of light-emitting regions of a corresponding type of sub-pixels on the substrate (100), wherein the refractive index of the at least one type of lens units is different from the refractive index of another type of lens units.

Description

Display panel and display device Technical Field

[0001] This article relates to, but is not limited to, the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and quantum dot light-emitting diodes (QLEDs) are active light-emitting display devices with advantages such as self-illumination, wide viewing angle, high contrast, low power consumption, extremely high response speed, thinness, flexibility, and low cost. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] This embodiment provides a display panel and a display device.

[0005] On one hand, this embodiment provides a display panel, including: a substrate, a display structure layer disposed on the substrate, and a lens layer. The display structure layer includes a plurality of first-type pixel units, each first-type pixel unit including at least two types of sub-pixels. The lens layer is located on the side of the display structure layer away from the substrate and includes at least two types of lens units corresponding to the at least two types of sub-pixels; the orthographic projection of at least one type of lens unit on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the corresponding first-type sub-pixel on the substrate; wherein the refractive index of the at least one type of lens unit is different from the refractive index of the other types of lens units.

[0006] In some exemplary embodiments, the first type of pixel unit includes at least one first type of sub-pixel and at least one second type of sub-pixel. The at least two types of lens units include a first type of lens unit corresponding to the first type of sub-pixel and a second type of lens unit corresponding to the second type of sub-pixel; the refractive index of the first type of lens unit is greater than the refractive index of the second type of lens unit.

[0007] In some exemplary embodiments, the maximum length of the light-emitting region of a single first-type sub-pixel along a first direction is greater than its maximum length along a second direction, and the maximum length of the light-emitting region of a single second-type sub-pixel along the first direction is greater than its maximum length along the second direction. The maximum length of the light-emitting region of the single first-type sub-pixel along the first direction is greater than the maximum length of the light-emitting region of the single second-type sub-pixel along the first direction; wherein the first direction intersects the second direction, and the plane containing the first direction and the second direction is parallel to the plane containing the substrate.

[0008] In some exemplary embodiments, the first type of pixel unit includes two first type of sub-pixels and one second type of sub-pixel, wherein the two first type of sub-pixels include a red sub-pixel and a green sub-pixel; and the second type of sub-pixel includes a blue sub-pixel.

[0009] In some exemplary embodiments, the display panel further includes: a first filling layer located on the side of the lens layer away from the substrate, the first filling layer covering the surface of the lens layer away from the substrate; the refractive index of the first filling layer is less than the refractive index of the lens layer.

[0010] In some exemplary embodiments, the display panel further includes: at least one light-shielding layer located on the side of the lens layer near the display structure layer; the orthographic projection of the at least one light-shielding layer on the substrate does not overlap or only partially overlaps with the orthographic projection of the light-emitting areas of the at least two types of sub-pixels on the substrate.

[0011] In some exemplary embodiments, the display panel further includes: an encapsulation structure layer located on the side of the display structure layer away from the substrate. The at least one light-shielding layer includes: a first light-shielding layer located on the side of the encapsulation structure layer near the lens layer; the first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel. The first light-shielding layer has: a first type of opening corresponding to the first type of sub-pixel and a second type of opening corresponding to the second type of sub-pixel; wherein the orthographic projection of the first type of opening onto the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the first type of sub-pixel onto the substrate; the orthographic projection of the second type of opening onto the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the second type of sub-pixel onto the substrate; the maximum length of the overlapping area of ​​the first type of opening and the light-emitting region of the first type of sub-pixel along a first direction is greater than the maximum length of the overlapping area of ​​the second type of opening and the light-emitting region of the second type of sub-pixel along the first direction. The two types of lens units include: a first type of lens unit corresponding to the first type of pixel and a second type of lens unit corresponding to the second type of sub-pixel; the refractive index of the first type of lens unit is greater than the refractive index of the second type of lens unit.

[0012] In some exemplary embodiments, the orthographic projection of the first type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate; the minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel is less than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel.

[0013] In some exemplary embodiments, the display panel includes a plurality of light-shielding layers, comprising: a first light-shielding layer, a second light-shielding layer, and a third light-shielding layer; the second light-shielding layer and the third light-shielding layer are located between the first light-shielding layer and the lens layer. The second light-shielding layer has a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer has a fourth type of opening corresponding to the second type of sub-pixel; the orthographic projections of the third type of opening on the substrate and the orthographic projections of the fourth type of opening on the substrate do not overlap. The orthographic projections of the third type of opening on the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the first type of sub-pixel on the substrate. The orthographic projections of the fourth type of opening on the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the second type of sub-pixel on the substrate.

[0014] In some exemplary embodiments, the minimum distance between the third light-shielding layer and the lens layer is greater than or equal to the minimum distance between the second light-shielding layer and the lens layer.

[0015] In some exemplary embodiments, the orthographic projection of the third type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the second type of pixel onto the substrate. The minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel is greater than the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel.

[0016] In some exemplary embodiments, the minimum distance between the surface of the third light-shielding layer away from the substrate and the surface of the second light-shielding layer away from the substrate is greater than or equal to the minimum distance between the surface of the third light-shielding layer near the substrate and the surface of the first light-shielding layer away from the substrate.

[0017] In some exemplary embodiments, the display panel further includes: a touch structure layer, a second filling layer, and a third filling layer. The touch structure layer is located between the first light-shielding layer and the lens layer; the touch structure layer includes at least one touch conductive layer; the at least one touch conductive layer is reused as both the second and third light-shielding layers, or reused as the second light-shielding layer. The second filling layer is located between the touch structure layer and the lens layer. The third filling layer is located between the touch structure layer and the first light-shielding layer. The thickness of the third filling layer is greater than the thickness of the second filling layer.

[0018] In some exemplary embodiments, the maximum thickness of the at least one type of lens unit is 0.

[0019] In some exemplary embodiments, the display structure layer further includes: a plurality of second-type pixel units, each second-type pixel unit including a plurality of privacy sub-pixels, each privacy sub-pixel including a plurality of micropixels, the plurality of micropixels of the privacy sub-pixels being configured to emit light of the same color. The lens layer further includes: a plurality of microlens units corresponding to the plurality of micropixels, the orthographic projection of the microlens unit on the substrate at least partially overlapping the orthographic projection of the corresponding at least one micropixel on the substrate; the refractive index of the plurality of microlens units is the same as the refractive index of the at least one type of lens unit.

[0020] On the other hand, this embodiment provides a display panel, including: a substrate, a display structure layer disposed on the substrate, and a lens layer. The display structure layer includes a plurality of first-type pixel units, each first-type pixel unit including at least two types of sub-pixels emitting different colors of light. The lens layer is located on the side of the display structure layer away from the substrate and includes at least two types of lens units corresponding to the at least two types of sub-pixels; the orthographic projection of at least one type of lens unit on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the corresponding type of sub-pixel on the substrate; wherein the maximum thickness of the at least one type of lens unit is different from the maximum thickness of the other types of lens units.

[0021] In some exemplary embodiments, the first type of pixel unit includes at least one first type of sub-pixel and at least one second type of sub-pixel. The at least two types of lens units include a first type of lens unit corresponding to the first type of sub-pixel and a second type of lens unit corresponding to the second type of sub-pixel. The maximum thickness of the first type of lens unit is greater than the maximum thickness of the second type of lens unit.

[0022] In some exemplary embodiments, the display panel further includes: at least one light-shielding layer located on the side of the lens layer near the display structure layer; the orthographic projection of the at least one light-shielding layer on the substrate does not overlap or only partially overlaps with the orthographic projection of the light-emitting areas of the at least two types of sub-pixels on the substrate.

[0023] In some exemplary embodiments, the display panel further includes: an encapsulation structure layer located on the side of the display structure layer away from the substrate. The at least one light-shielding layer includes: a first light-shielding layer located on the side of the encapsulation structure layer near the lens layer; the first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel. The first light-shielding layer has: a first type of opening corresponding to the first type of sub-pixel and a second type of opening corresponding to the second type of sub-pixel; wherein the orthographic projection of the first type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the first type of sub-pixel on the substrate; the orthographic projection of the second type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the second type of sub-pixel on the substrate; the maximum length of the overlapping area of ​​the first type of opening and the light-emitting area of ​​the first type of sub-pixel along a first direction is greater than the maximum length of the overlapping area of ​​the second type of opening and the light-emitting area of ​​the second type of sub-pixel along the first direction. The two types of lens units include: a first type of lens unit corresponding to the first type of pixel and a second type of lens unit corresponding to the second type of sub-pixel; the maximum thickness of the first type of lens unit is greater than the maximum thickness of the second type of lens unit.

[0024] In some exemplary embodiments, the orthographic projection of the first type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. The minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel is less than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel.

[0025] In some exemplary embodiments, the display panel includes a plurality of light-shielding layers, comprising: a first light-shielding layer, a second light-shielding layer, and a third light-shielding layer; the second light-shielding layer and the third light-shielding layer are located between the first light-shielding layer and the lens layer. The second light-shielding layer has a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer has a fourth type of opening corresponding to the second type of sub-pixel; the orthographic projections of the third type of opening on the substrate and the orthographic projections of the fourth type of opening on the substrate do not overlap. The orthographic projections of the third type of opening on the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the first type of sub-pixel on the substrate. The orthographic projections of the fourth type of opening on the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the second type of sub-pixel on the substrate.

[0026] In some exemplary embodiments, the minimum distance between the third light-shielding layer and the lens layer is greater than or equal to the minimum distance between the second light-shielding layer and the lens layer.

[0027] In some exemplary embodiments, the orthographic projection of the third type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate covers the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. The minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel is greater than the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel.

[0028] In some exemplary embodiments, the maximum thickness of the at least one type of lens unit is 0.

[0029] On the other hand, this embodiment provides a display device, including the display panel as described above.

[0030] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood.

[0031] Overview of the attached figures

[0032] The accompanying drawings are used to provide an understanding of the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0033] Figure 1 is a partial plan view of a display panel according to at least one embodiment of the present disclosure;

[0034] Figure 2 is a schematic diagram of a partial cross-section along the UU' direction in Figure 1;

[0035] Figure 3 is a partial cross-sectional view along the QQ' direction in Figure 1;

[0036] Figure 4 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel.

[0037] Figure 5 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram;

[0038] Figure 6 is another partial cross-sectional view along the QQ' direction in Figure 1;

[0039] Figure 7 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel.

[0040] Figure 8 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram;

[0041] Figure 9 is another partial cross-sectional view along the QQ' direction in Figure 1;

[0042] Figure 10A is a partial planar schematic diagram of the second light-shielding layer in at least one embodiment of the present disclosure;

[0043] Figure 10B is a partial planar schematic diagram of the third light-shielding layer in at least one embodiment of the present disclosure;

[0044] Figure 11 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel.

[0045] Figure 12 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram;

[0046] Figure 13 is another partial cross-sectional view along the QQ' direction in Figure 1;

[0047] Figure 14 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel.

[0048] Figure 15 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram;

[0049] Figure 16 is another partial cross-sectional view along the QQ' direction in Figure 1;

[0050] Figure 17 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel.

[0051] Figure 18 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram;

[0052] Figure 19 is another partial plan view of a display panel according to at least one embodiment of the present disclosure;

[0053] Figure 20 is a schematic diagram of a display device according to at least one embodiment of the present disclosure.

[0054] Detailed Explanation

[0055] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The implementation can be carried out in many different forms. Those skilled in the art will readily understand that the methods and content can be transformed into other forms without departing from the spirit and scope of this disclosure. Therefore, this disclosure should not be construed as limited to the content described in the following embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0056] In the accompanying drawings, the size of one or more constituent elements, the thickness of layers, or areas are sometimes exaggerated for clarity. Therefore, this disclosure is not necessarily limited to these dimensions, and the shape and size of one or more parts in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0057] The ordinal numbers such as "first," "second," and "third" used in this specification are used to avoid confusion among the constituent elements, not to limit the quantity. The term "multiple" in this disclosure refers to two or more quantities.

[0058] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0059] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or joint; a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0060] In this specification, "connection" includes "electrical connection." "Electrical connection" includes situations where components are connected together by elements that have some electrical function. There are no particular limitations on the "elements that have some electrical function," as long as they enable the transmission of electrical signals between the connected components. Examples of "elements that have some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other multifunctional components.

[0061] In this specification, a transistor is a device that includes at least three terminals: a gate, a drain, and a source. A transistor has a channel region between its drain (drain terminal, drain region, or drain electrode) and its source (source terminal, source region, or source electrode), and current can flow through the drain, the channel region, and the source. In this specification, the channel region refers to the region through which current primarily flows.

[0062] In this specification, the first terminal can be the drain and the second terminal can be the source, or vice versa. When using transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source" and "drain" are sometimes interchanged. Therefore, in this specification, the "source" and "drain" can be interchanged. Additionally, the gate can also be called the control terminal.

[0063] In this specification, "parallel" refers to the state where the angle formed by two straight lines is greater than or equal to -10° and less than 10°, and therefore also includes the state where the angle is greater than or equal to -5° and less than 5°. Similarly, "perpendicular" refers to the state where the angle formed by two straight lines is greater than or equal to 80° and less than 100°, and therefore also includes the state where the angle is greater than or equal to 85° and less than 95°.

[0064] In this specification, circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons are not strictly defined. They can be approximate circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons. Small deformations due to tolerances are possible, such as chamfers, curved edges, and other variations.

[0065] In this specification, "about" and "approximately" mean without strictly defined limits, allowing for process and measurement errors. In this disclosure, "same" can include index values ​​differing by no more than 10%.

[0066] In this specification, "A extends along direction B" means that A may include a main part and a secondary part connected to the main part. The main part is a line, line segment, or strip-shaped body. The main part extends along direction B, and the length of the main part extending along direction B is greater than the length of the secondary part extending along other directions. In this disclosure, "A extends along direction B" refers to "the main part of A extends along direction B".

[0067] The "patterning process" described in this specification includes, for metallic, inorganic, or transparent conductive materials, processes such as photoresist coating, mask exposure, development, etching, and photoresist stripping; for organic materials, it includes processes such as organic material coating, mask exposure, and development. Deposition can be performed using any one or more of sputtering, evaporation, and chemical vapor deposition; coating can be performed using any one or more of spraying, spin coating, and inkjet printing; and etching can be performed using any one or more of dry and wet etching. This disclosure does not impose any limitations.

[0068] In this specification, "A and B are of the same layer structure" and "A and B are arranged in the same layer" mean that A and B are formed simultaneously through the same patterning process, or that the surfaces of A and B closest to the substrate are substantially the same distance from the substrate, or that the surfaces of A and B closest to the substrate are in direct contact with the same film layer. "Same layer" does not always mean that the layer thickness or layer height is the same in a cross-sectional view. The "shape of A" in this disclosure refers to the shape of A as projected onto the substrate.

[0069] The thickness of the film layer mentioned in this specification refers to the vertical distance between the surface of the film layer closest to the substrate and the surface furthest from the substrate.

[0070] The range referred to in this specification is B to C, meaning the area within the boundary that is greater than or equal to B and less than or equal to C.

[0071] In some implementations, the display effect of the display panel may vary as the user's viewing angle changes. For example, when different colors of light change with the viewing angle, the matching degree of brightness decay (L-decay) decreases, resulting in color shift in the display panel. The viewing angle refers to the angle between the line of sight and the central normal of the display panel when the eye observes it. The central normal of the display panel is perpendicular to the plane on which the display panel is located and passes through the geometric center of the display panel. The horizontal viewing angle refers to the angle between the line of sight from the left or right side of the display panel and the central normal, while the vertical viewing angle refers to the angle between the line of sight from the top or bottom of the display panel and the central normal.

[0072] This embodiment provides a display panel and a display device that can improve the color deviation of the display panel.

[0073] This embodiment provides a display panel, including: a substrate, a display structure layer disposed on the substrate, and a lens layer. The display structure layer includes a plurality of first-type pixel units, each first-type pixel unit including at least two types of sub-pixels emitting different colors of light. The lens layer is located on the side of the display structure layer away from the substrate and includes at least two types of lens units corresponding to the at least two types of sub-pixels. The orthographic projection of at least one type of lens unit onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the corresponding first-type sub-pixel onto the substrate. For example, the orthographic projection of one type of lens unit onto the substrate may cover the orthographic projection of the light-emitting area of ​​the corresponding first-type sub-pixel onto the substrate. The refractive index of at least one type of lens unit is different from the refractive index of the other types of lens units.

[0074] For example, the first type of pixel unit may include: a first type of sub-pixel and a second type of sub-pixel that emit different colors of light; the lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel and a second type of lens unit corresponding to the second type of sub-pixel; the refractive index of the first type of lens unit may be greater than the refractive index of the second type of lens unit; or, the refractive index of the first type of lens unit may be less than the refractive index of the second type of lens unit.

[0075] For example, the first type of pixel unit may include: a first type of sub-pixel, a second type of sub-pixel, and a third type of sub-pixel that emit different colors of light; the lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel, a second type of lens unit corresponding to the second type of sub-pixel, and a third type of lens unit corresponding to the third type of sub-pixel; wherein, the refractive indices of the first type of lens unit, the second type of lens unit, and the third type of lens unit may all be different; or, two of the first type of lens unit, the second type of lens unit, and the third type of lens unit may have the same refractive index, but different from the refractive index of the other type of lens unit.

[0076] This embodiment improves the brightness attenuation difference of different colors of light emitted from different types of sub-pixels as the viewing angle changes by designing the refractive index of at least two types of lens units corresponding to at least two types of sub-pixels differently, thereby improving the resulting display color shift.

[0077] In some examples, the display panel may be an OLED display panel, or a QLED display panel, or a plasma display panel (PDP), or a liquid crystal display panel (LCD). This embodiment is not limited to this.

[0078] In some exemplary embodiments, the first type of pixel unit may include at least one first type of sub-pixel and at least one second type of sub-pixel. The first type of sub-pixel and the second type of sub-pixel may be configured to emit light of different colors. At least two types of lens units may include: a first type of lens unit corresponding to the first type of sub-pixel, and a second type of lens unit corresponding to the second type of sub-pixel. The refractive index of the first type of lens unit may be greater than that of the second type of lens unit. In this example, the different light emitted by the first type of sub-pixel and the second type of sub-pixel exhibits different brightness decay rates with varying viewing angles. By differentiating the refractive indices of the lens units corresponding to the two types of sub-pixels, the color shift caused by the difference in brightness decay of the light emitted by the two types of sub-pixels with varying viewing angles can be improved.

[0079] In some exemplary embodiments, the maximum length of the light-emitting region of a single first-type sub-pixel along the first direction can be greater than the maximum length along the second direction, and the maximum length of the light-emitting region of a single second-type sub-pixel along the first direction can be greater than the maximum length along the second direction. The maximum length of the light-emitting region of a single first-type sub-pixel along the first direction is greater than the maximum length of the light-emitting region of a single second-type sub-pixel along the first direction; wherein the first direction intersects the second direction, and the plane containing the first direction and the second direction is parallel to the plane containing the substrate. In this example, the brightness attenuation rates of different lights emitted by the first-type and second-type sub-pixels differ with the vertical viewing angle. This is related to the maximum length of the light-emitting regions of the first-type and second-type sub-pixels along the first direction. By differentiating the refractive index of the lens units corresponding to the two types of sub-pixels, the color shift caused by the difference in brightness attenuation of the emitted light from the two types of sub-pixels with the vertical viewing angle can be improved.

[0080] In some examples, a first-class pixel unit may include two first-class sub-pixels and one second-class sub-pixel. The two first-class sub-pixels may include a red sub-pixel and a green sub-pixel, and the second-class sub-pixel may include a blue sub-pixel. This example improves the yellowish color cast in white light displays caused by the faster brightness decay of blue light emitted from the blue sub-pixel compared to red and green light as the viewing angle increases, through differentiated design of the refractive index of the lens unit corresponding to the blue sub-pixel and the refractive indices of the lens units corresponding to the red and green sub-pixels.

[0081] In other examples, the two first-class sub-pixels may include a red sub-pixel and a blue sub-pixel, and the second-class sub-pixels may include a green sub-pixel. The refractive index of the first-class lens unit corresponding to the first-class sub-pixel is different from the refractive index of the second-class lens unit corresponding to the second-class sub-pixel; for example, the refractive index of the first-class lens unit corresponding to the first-class sub-pixel can be greater than the refractive index of the second-class lens unit corresponding to the second-class sub-pixel. This example, by differentiating the refractive index of the lens unit corresponding to the green sub-pixel, and the refractive indices of the lens units corresponding to the red and blue sub-pixels, can improve the color shift in white light display caused by the faster brightness decay of green light emitted from the green sub-pixel as the viewing angle increases compared to red and blue light.

[0082] In other examples, the two first-class sub-pixels may include a green sub-pixel and a blue sub-pixel, and the second-class sub-pixels may include a red sub-pixel. The refractive index of the first-class lens unit corresponding to the first-class sub-pixel is different from the refractive index of the second-class lens unit corresponding to the second-class sub-pixel; for example, the refractive index of the first-class lens unit corresponding to the first-class sub-pixel can be greater than the refractive index of the second-class lens unit corresponding to the second-class sub-pixel. This example, by differentiating the refractive index of the lens unit corresponding to the red sub-pixel, and the refractive indices of the lens units corresponding to the green and blue sub-pixels, can improve the color shift in white light display caused by the faster brightness decay of red light emitted from the red sub-pixel as the viewing angle increases compared to green and blue light.

[0083] In other examples, the first type of pixel unit may include: a first type of sub-pixel, a second type of sub-pixel, and a third type of sub-pixel. The first type of sub-pixel, the second type of sub-pixel, and the third type of sub-pixel may be configured to emit different colors of light. For example, the first type of sub-pixel may include a red sub-pixel, the second type of sub-pixel may include a green sub-pixel, and the third type of sub-pixel may include a blue sub-pixel. The maximum length of the light-emitting region of the first type of sub-pixel along the first direction may be greater than the maximum length of the light-emitting region of the second type of sub-pixel along the first direction, and the maximum length of the light-emitting region of the second type of sub-pixel along the first direction may be greater than the maximum length of the light-emitting region of the third type of sub-pixel along the first direction. The lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel, a second type of lens unit corresponding to the second type of sub-pixel, and a third type of lens unit corresponding to the third type of sub-pixel. The refractive indices of the first type of lens unit, the second type of lens unit, and the third type of lens unit may all be different. For example, the refractive index of the first type of lens unit may be greater than the refractive index of the second type of lens unit, and the refractive index of the second type of lens unit may be greater than the refractive index of the third type of lens unit. This example demonstrates how different designs for the refractive indices of the three types of lens units corresponding to the three types of sub-pixels can effectively improve the color shift caused by the different rates of brightness decay of light emitted from the three types of sub-pixels as the viewing angle (e.g., the vertical viewing angle) increases.

[0084] In some exemplary embodiments, the display panel may further include a first filling layer located on the side of the lens layer away from the substrate, the first filling layer covering the surface of the lens layer away from the substrate. The refractive index of the first filling layer may be less than the refractive index of the lens layer. In this example, by setting a first filling layer with a refractive index less than that of the lens layer, light can be focused in conjunction with the lens unit of the lens layer, effectively improving the light extraction efficiency of the display panel.

[0085] In some exemplary embodiments, the display panel may further include at least one light-shielding layer. The light-shielding layer may be located on the side of the lens layer closest to the display structure layer. The orthographic projection of the at least one light-shielding layer onto the substrate and the orthographic projection of the light-emitting areas of at least two types of sub-pixels onto the substrate may not overlap or may partially overlap. For example, the display panel may include two light-shielding layers. In some embodiments, both light-shielding layers are light-absorbing materials; in some embodiments, one light-shielding layer is a light-absorbing material and the other is a metallic material. For example, a light-shielding layer made of metallic material may be reused from some film layers in the touch structure layer; for example, the touch conductive layer of the touch structure layer may be reused as a light-shielding layer. For example, the display panel may include three or more light-shielding layers; for example, all light-shielding layers may be light-absorbing materials, or at least some of the light-shielding layers may be reused from the touch conductive layer.

[0086] In some exemplary embodiments, the display panel may further include an encapsulation structure layer located on the side of the display structure layer away from the substrate. The display panel may include a light-shielding layer, such as a first light-shielding layer. The first light-shielding layer may be located on the side of the encapsulation structure layer closer to the lens layer. A first type of pixel unit may include at least one first type of sub-pixel and at least one second type of sub-pixel. The first light-shielding layer may have a first type of opening corresponding to the first type of sub-pixel and a second type of opening corresponding to the second type of sub-pixel; wherein the orthographic projection of the first type of opening onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. For example, the orthographic projection of the first type of opening onto the substrate may cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate may cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. The maximum length of the overlapping area of ​​the first type of opening and the light-emitting area of ​​the first type of sub-pixel along a first direction is greater than the maximum length of the overlapping area of ​​the second type of opening and the light-emitting area of ​​the second type of sub-pixel along the first direction. The lens layer may include a first type of lens unit corresponding to a first type of pixel and a second type of lens unit corresponding to a second type of sub-pixel; the refractive index of the first type of lens unit may be greater than the refractive index of the second type of lens unit. In this example, the brightness attenuation rates of different lights emitted by the first type of sub-pixel and the second type of sub-pixel with changing viewing angles are different, and are related to the size of the first type of opening and the second type of opening in the first light-shielding layer, as well as the size of the light-emitting area of ​​the two types of sub-pixels. This example, by differentiating the refractive index of the lens units corresponding to the two types of sub-pixels, can improve the display color shift caused by the difference in brightness attenuation at viewing angles of the light emitted by the two types of sub-pixels.

[0087] In some exemplary embodiments, the orthographic projection of the first type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. The minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel can be smaller than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. In this example, by enlarging the second type of opening corresponding to the second type of sub-pixel, the light emission angle corresponding to the second type of sub-pixel can be increased, thereby slowing down the rate of brightness attenuation of the light emitted from the second type of sub-pixel as the viewing angle increases, and thus improving the resulting color shift in the display.

[0088] In some exemplary embodiments, the display panel may include multiple light-shielding layers, which may include a first light-shielding layer, a second light-shielding layer, and a third light-shielding layer; the second and third light-shielding layers may be located between the first light-shielding layer and the lens layer. The second light-shielding layer may have a third type of opening corresponding to a first type of sub-pixel, and the third light-shielding layer may have a fourth type of opening corresponding to a second type of sub-pixel; the orthographic projections of the third type of opening onto the substrate and the orthographic projections of the fourth type of opening onto the substrate do not overlap. The orthographic projections of the third type of opening onto the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the first type of sub-pixel onto the substrate; the orthographic projections of the fourth type of opening onto the substrate at least partially overlap with the orthographic projections of the light-emitting areas of the second type of sub-pixel onto the substrate. For example, the orthographic projection of the third type of opening onto the substrate may cover the orthographic projection of the light-emitting areas of the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate may cover the orthographic projection of the light-emitting areas of the second type of sub-pixel onto the substrate. In some examples, the minimum distance between the third light-shielding layer and the lens layer may be equal to the minimum distance between the second light-shielding layer and the lens layer. For example, the second and third light-shielding layers can be a single integrated structure.

[0089] In some exemplary embodiments, the second and third light-shielding layers can be independently configured, and the orthographic projections of the second and third light-shielding layers onto the substrate may not overlap or may only partially overlap. For example, the minimum distance between the third light-shielding layer and the lens layer may be greater than the minimum distance between the second light-shielding layer and the lens layer. This example, by differentiating the positions of the third and second light-shielding layers relative to the lens layer, can adjust the light emission angle corresponding to the second type of sub-pixels. For example, by increasing the light emission angle corresponding to the second type of sub-pixels, the brightness attenuation rate of the light emitted from the second type of sub-pixels as the viewing angle increases can be slowed down, thereby improving the resulting color shift in the display.

[0090] In some exemplary embodiments, the orthographic projection of the third type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. The minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel can be greater than the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel. In this example, by enlarging the fourth type of opening corresponding to the second type of sub-pixel, the light emission angle corresponding to the second type of sub-pixel can be increased, thereby slowing down the rate of brightness attenuation of the light emitted from the second type of sub-pixel as the viewing angle increases, and thus improving the resulting color shift in the display.

[0091] In some exemplary embodiments, the display panel may further include: a touch structure layer, a second filling layer, and a third filling layer. The touch structure layer is located on the side of the display structure layer away from the substrate and on the side of the lens layer near the substrate. The touch structure layer may include at least one touch conductive layer. The second filling layer may be located between the touch structure layer and the lens layer, and the third filling layer may be located on the side of the touch structure layer near the display structure layer. In some examples, the touch conductive layer of the touch structure layer may be reused as the aforementioned second and third light-shielding layers, wherein the second and third light-shielding layers may be an integral structure. In other examples, the touch conductive layer may be reused as the aforementioned second light-shielding layer, and the third light-shielding layer may be located on the side of the touch conductive layer near the display structure layer; the third light-shielding layer may, for example, be a light-absorbing material. This embodiment is not limited in this respect. In other examples, the touch conductive layer may be reused as the aforementioned third light-shielding layer, and the second light-shielding layer may be a light-absorbing material.

[0092] In some exemplary embodiments, the thickness of the third filler layer can be greater than the thickness of the second filler layer. This example demonstrates how setting the thicknesses of the second and third filler layers can adjust the distance between the lens layer and the display structure layer, thereby further adjusting the brightness attenuation curves of different colors of light as the viewing angle increases.

[0093] In some exemplary embodiments, the material of each filler layer can be an organic material, such as an organic resin.

[0094] The following examples illustrate the solution of this embodiment.

[0095] With the continuous development of display technology, users' demands for display methods are becoming increasingly diversified. In some practical application scenarios, the trend in display product development is to satisfy both privacy (such as blocking the display from wide viewing angles to prevent peeping) and shared display (such as sharing the display from wide viewing angles to achieve a sharing effect). For example, in-vehicle products have a promising future. In addition to the central control screen, some smart cars are equipped with a passenger-side screen, placed in the passenger cabin, primarily to provide entertainment for the passenger. For example, the central control screen and the passenger-side screen can be a single integrated screen. Entertainment information on the passenger-side screen can sometimes distract the driver. To avoid affecting the driver when displaying information on the passenger-side screen, it is possible to choose whether to share the display with the driver or display it only to the passenger, depending on the scenario. For in-vehicle display panels, the vertical direction (V-direction) refers to the up-and-down direction, i.e., the direction of the windshield; the horizontal direction (H-direction) refers to the direction of the passenger.

[0096] Figure 1 is a partial plan view of a display panel according to at least one embodiment of the present disclosure. The display panel in this example is a display panel used in the automotive field that implements a switchable privacy function.

[0097] In some examples, as shown in Figure 1, the display panel may include multiple shared pixel units P1 and multiple privacy pixel units P2. Each pixel unit may include multiple sub-pixels, such as three sub-pixels. Specifically, a shared pixel unit P1 may include a first sub-pixel P11, a second sub-pixel P12, and a third sub-pixel P13; a privacy pixel unit P2 may include a fourth sub-pixel P21, a fifth sub-pixel P22, and a sixth sub-pixel P23. The first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13 can be shared sub-pixels, while the fourth sub-pixel P21, the fifth sub-pixel P22, and the sixth sub-pixel P23 can be privacy sub-pixels. In other examples, each pixel unit may include four sub-pixels or other numbers of sub-pixels.

[0098] In some examples, when the display panel is in privacy display mode, the privacy sub-pixel in privacy pixel unit P2 can be lit; when the display panel is in shared display mode, both the privacy sub-pixel in privacy pixel unit P2 and the shared sub-pixel in shared pixel unit P1 can be lit, or only the shared sub-pixel in shared pixel unit P1 can be lit.

[0099] In some examples, as shown in Figure 1, shared pixel units P1 and privacy pixel units P2 can be arranged at intervals along a first direction D1. Multiple shared pixel units P1 can be aligned along a second direction D2, and multiple privacy pixel units P2 can be aligned along the second direction D2. The first direction D1 intersects the second direction D2; for example, the first direction D1 can be perpendicular to the second direction D2. The first direction D1 can correspond to the aforementioned V direction, and the second direction D2 can correspond to the aforementioned H direction.

[0100] In some examples, as shown in Figure 1, the first sub-pixel P11 and the second sub-pixel P12 within the shared pixel unit P1 can be aligned along the second direction D2, and the third sub-pixel P13 can be located on the same side of the first sub-pixel P11 and the second sub-pixel P12 along the first direction D1. The fourth sub-pixel P21 and the fifth sub-pixel P22 within the privacy pixel unit P2 can be aligned along the second direction D2, and the sixth sub-pixel P23 can be located on the same side of the fourth sub-pixel P21 and the fifth sub-pixel P22 along the first direction D1. The sixth sub-pixel P23 can also be arranged adjacent to the third sub-pixel P13 of the shared pixel unit P1 in the first direction D1. This embodiment does not limit the arrangement of multiple sub-pixels within a pixel unit.

[0101] In some examples, a single privacy subpixel can include multiple micropixels. For instance, the fourth subpixel P21 can include multiple first micropixels P211, such as four first micropixels P211 arranged in a two-row, two-column array; the fifth subpixel P22 can include multiple second micropixels P221, such as ten second micropixels P221 arranged in a two-row, five-column array; and the sixth subpixel P23 can include multiple third micropixels P231, such as twelve third micropixels P231 arranged in a two-row, six-column array. Multiple micropixels of the same privacy subpixel can be configured to emit light of the same color.

[0102] In some examples, the orthographic projection of the light-emitting regions of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13 onto the substrate can be approximately rectangular. Specifically, the maximum length of the light-emitting region of the first sub-pixel P11 along the second direction D2 can be greater than its maximum length along the first direction D1; the maximum length of the light-emitting region of the second sub-pixel P12 along the second direction D2 can be greater than its maximum length along the first direction D1; and the maximum length of the light-emitting region of the third sub-pixel P13 along the second direction D2 can be greater than its maximum length along the first direction D1. The maximum length of the light-emitting region of the first sub-pixel P11 along the first direction D1 can be greater than the maximum length of the light-emitting region of the third sub-pixel P13 along the first direction D1, and the maximum length of the light-emitting region of the second sub-pixel P12 along the first direction D1 can be approximately the same as the maximum length of the light-emitting region of the second sub-pixel P12 along the first direction D1. The orthographic projection of the light-emitting areas of the first micro-pixel P211 of the fourth sub-pixel P21, the second micro-pixel P221 of the fifth sub-pixel P22, and the third micro-pixel P231 of the sixth sub-pixel P23 onto the substrate can be approximately circular.

[0103] In some examples, the area of ​​the light-emitting region of the third sub-pixel P13 can be larger than the area of ​​the light-emitting region of the second sub-pixel P12, and the area of ​​the light-emitting region of the second sub-pixel P12 can be larger than the area of ​​the light-emitting region of the first sub-pixel P11. This embodiment is not limited in this respect.

[0104] Figure 2 is a partial cross-sectional view along the UU' direction in Figure 1. Figure 3 is a partial cross-sectional view along the QQ' direction in Figure 1. In some examples, as shown in Figures 2 and 3, in the direction perpendicular to the display panel, the display panel may include: a display structure layer 12, an encapsulation structure layer 13, a first light-shielding layer 21, a third filling layer 33, a touch structure layer 14, a second filling layer 32, a lens layer 41, a first filling layer 31, and a cover plate 16, which are sequentially disposed on the substrate 100.

[0105] In some examples, the display structure layer 12 may include multiple sub-pixels. Figure 2 illustrates the partial structure of the two first micro-pixels P211 of the fourth sub-pixel P21 of the privacy pixel unit P2 and the first sub-pixel P11 of the shared pixel unit P1. Figure 3 illustrates the partial structure of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13 of the shared pixel unit P1.

[0106] In some examples, a sub-pixel may include a pixel circuit and a light-emitting element electrically connected to the pixel circuit. For example, the first sub-pixel P11 may include a pixel circuit 115 and a light-emitting element 511; the second sub-pixel P12 may include a pixel circuit and a light-emitting element 521; the third sub-pixel P13 may include a pixel circuit and a light-emitting element 531; the fourth sub-pixel P21 may include a pixel circuit 110 and a plurality of first micropixels P211, each of which can be a light-emitting element. The plurality of first micropixels P211 may be electrically connected to the same pixel circuit 110. The structures of the fifth sub-pixel P22 and the sixth sub-pixel P26 are similar to those of the fourth sub-pixel P21, and will not be described further here.

[0107] In some examples, the pixel circuit may include multiple transistors and at least one capacitor. For example, the pixel circuit may be a 3T1C, 4T1C, 5T1C, 5T2C, 6T1C, 7T1C, or 8T1C structure. In these circuit structures, T refers to a thin-film transistor, C refers to a capacitor, the number before T represents the number of thin-film transistors in the circuit, and the number before C represents the number of capacitors in the circuit. In some examples, the multiple transistors in the pixel circuit may be P-type transistors or N-type transistors. Using the same type of transistors in the pixel circuit can simplify the process flow, reduce the manufacturing difficulty of the display panel, and improve product yield. In other examples, the multiple transistors in the pixel circuit may include both P-type and N-type transistors.

[0108] In some examples, the multiple transistors in the pixel circuit can be low-temperature polysilicon (LTPS) thin-film transistors (TFTs), oxide thin-film transistors (OPTs), or a combination of both. The active layer of the LTPS TFT is made of low-temperature polysilicon (LTPS), while the active layer of the OPT TFT is made of oxide. LTPS TFTs offer advantages such as high mobility and fast charging, while OPTs offer advantages such as low leakage current. Integrating LTPS and OPTs onto a single display panel—an LTPS+Oxide (LTPO) display panel—leverages the advantages of both, enabling low-frequency driving, reducing power consumption, and improving display quality.

[0109] In some examples, the light-emitting element can be any of the following: a light-emitting diode (LED), an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), or a micro-LED (including mini-LED or micro-LED). For example, the light-emitting element can be an OLED, which can emit red, green, blue, or white light under the drive of its corresponding pixel circuit. The color of the light emitted by the light-emitting element can be determined as needed. In some examples, the light-emitting element may include an anode, a cathode, and an organic light-emitting layer located between the anode and cathode. The anode of the light-emitting element can be electrically connected to the corresponding pixel circuit. However, this embodiment is not limited in this respect.

[0110] In some examples, the shape of the light-emitting element of a sub-pixel can be rectangular, rhomboid, circular, elliptical, pentagonal, hexagonal, or other polygonal. When a pixel unit includes three sub-pixels, the light-emitting elements of the three sub-pixels can be arranged horizontally side-by-side, vertically side-by-side, or in a triangular arrangement; when a pixel unit includes four sub-pixels, the light-emitting elements of the four sub-pixels can be arranged horizontally side-by-side, vertically side-by-side, or in a square arrangement. However, this embodiment is not limited in this respect.

[0111] In some examples, as shown in Figures 2 and 3, in a direction perpendicular to the display panel, the display structure layer 12 may include a circuit structure layer and a light-emitting structure layer sequentially disposed on the substrate 100. The circuit structure layer may include a buffer layer 101, a semiconductor layer, a gate insulating (GI) layer 102, a gate metal layer, an interlayer insulating (ILD) layer 103, a source / drain metal layer, and a planarization (PLN) layer 104 sequentially disposed on the substrate 100. The semiconductor layer may include an active layer of the transistors in the pixel circuit (e.g., the active layer 111 of the transistors in pixel circuit 110), the gate metal layer may include the gate of the transistors in the pixel circuit (e.g., the gate 112 of the transistors in pixel circuit 110), and the source / drain metal layer may include the first and second terminals of the transistors in the pixel circuit (e.g., the first terminal 113 and the second terminal 114 of the transistors in pixel circuit 110). The active layer 111 of the transistors may include a first region, a second region, and a channel region located between the first and second regions. The orthographic projection of the transistor's gate 112 onto the substrate can cover the orthographic projection of the channel region of the active layer 110 onto the substrate. The first electrode 113 of the transistor can be connected to the first region of the active layer 111 through vias formed in the interlayer insulating layer 103 and the gate insulating layer 102, and the second electrode 114 of the transistor can be connected to the second region of the active layer 111 through vias formed in the interlayer insulating layer 103 and the gate insulating layer 102. In other examples, the circuit structure layer may include multiple gate metal layers and multiple source / drain metal layers. This embodiment is not limited in this respect.

[0112] In some examples, the gate metal layer and source / drain metal layers can be made of metallic materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or alloys of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). These can be single-layer structures or multi-layer composite structures, such as Ti / Al / Ti. The semiconductor layer can be made of amorphous indium gallium zinc oxide (a-IGZO), zinc oxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), hexathiophene, or polythiophene, etc. That is, this disclosure applies to transistors manufactured based on oxide technology, silicon technology, or organic technology.

[0113] In some examples, the light-emitting structure layer may include a pixel definition layer 105 and multiple light-emitting elements (e.g., a light-emitting element 511 for a first sub-pixel P11, a light-emitting element 521 for a second sub-pixel P12, a light-emitting element 531 for a third sub-pixel P13, and multiple first micropixels P211 for a fourth sub-pixel P21). As shown in Figures 2 and 3, in a direction perpendicular to the display panel, the light-emitting structure layer may include an anode layer, an organic functional layer, and a cathode layer disposed sequentially. The anode layer may include: the anode 5111 of the light-emitting element 511 of the first sub-pixel P11, the anode of the light-emitting element 521 of the second sub-pixel P12, the anode of the light-emitting element 531 of the third sub-pixel P13, and the anode 1171 of a plurality of first micropixels P211 of the fourth sub-pixel P21; the organic functional layer may include: the organic light-emitting layer 5112 of the light-emitting element 511 of the first sub-pixel P11, the organic light-emitting layer of the light-emitting element 521 of the second sub-pixel P12, the organic light-emitting layer of the light-emitting element 531 of the third sub-pixel P13, and the organic light-emitting layer 1172 of a plurality of micropixels P211 of the fourth sub-pixel P21; the cathode layer may include: the cathode 5113 of the light-emitting element 511 of the first sub-pixel P11, the cathode of the light-emitting element 521 of the second sub-pixel P12, the cathode of the light-emitting element 531 of the third sub-pixel P13, and the cathode 1173 of a plurality of first micropixels P211 of the fourth sub-pixel P21. In this design, the cathode 5113 of the light-emitting element 511 of the first sub-pixel P11, the cathode of the light-emitting element 521 of the second sub-pixel P12, the cathode of the light-emitting element 531 of the third sub-pixel P13, and the cathodes 1173 of the multiple first micropixels P211 of the fourth sub-pixel P21 can be an integral structure. Similarly, the anodes 1171 of the multiple first micropixels P211 of the fourth sub-pixel P21 can be an integral structure. Likewise, the anodes of the multiple second micropixels of the fifth sub-pixel and the anodes of the multiple third micropixels of the sixth sub-pixel can be an integral structure.

[0114] In some examples, a single light-emitting element may include an anode, an organic light-emitting layer, and a cathode stacked sequentially. A pixel definition layer 105 may be disposed on a planarization layer 104 and may have multiple pixel openings, each pixel opening exposing at least a portion of the surface of the anode of a corresponding light-emitting element. At least a portion of the organic light-emitting layer may be disposed within a pixel opening and connected to the corresponding anode. The cathode may be disposed on and connected to the organic light-emitting layer. The organic light-emitting layer of the light-emitting element can emit light of a corresponding color under the drive of the anode and cathode.

[0115] In this example, the light-emitting region of a sub-pixel (or the light-emitting region of a light-emitting element) can refer to the overlapping area of ​​the anode of the light-emitting element and the organic light-emitting layer and cathode layer exposed by the pixel definition layer. The area of ​​the light-emitting region of a sub-pixel refers to the area of ​​the sub-pixel's light-emitting region projected onto the substrate. The maximum length of the light-emitting region along a certain direction refers to the maximum length of the light-emitting region's projected onto the substrate along a certain direction.

[0116] In some examples, the organic light-emitting layer of the light-emitting element may include an emitting layer (EML) and one or more films including a hole injection layer (HIL), a hole transport layer (HTL), a hole block layer (HBL), an electron block layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Driven by voltages at the anode and cathode, the light-emitting properties of the organic material can be utilized to emit light at the desired grayscale.

[0117] In some examples, the organic light-emitting layers of light-emitting elements of different colors can be different. For example, a red light-emitting element may include a red light-emitting layer, a green light-emitting element may include a green light-emitting layer, and a blue light-emitting element may include a blue light-emitting layer. To reduce process complexity and improve yield, the hole injection layer and hole transport layer on one side of the light-emitting layer can be common layers, as can the electron injection layer and electron transport layer on the other side of the light-emitting layer. In some examples, any one or more of the hole injection layer, hole transport layer, electron injection layer, and electron transport layer can be fabricated in a single process (single vapor deposition process or single inkjet printing process), and isolation can be achieved through surface steps of the formed film layers or through surface treatment. For example, any one or more of the hole injection layer, hole transport layer, electron injection layer, and electron transport layer corresponding to adjacent light-emitting elements can be isolated. In some examples, the organic light-emitting layer can be formed by vapor deposition using a fine metal mask (FMM) or an open mask, or by inkjet printing.

[0118] In some examples, the encapsulation structure layer 13 may include a stacked first inorganic encapsulation layer 131, an organic encapsulation layer 132, and a second inorganic encapsulation layer 133. The first inorganic encapsulation layer 131 and the second inorganic encapsulation layer 133 may be made of inorganic materials, and the organic encapsulation layer 132 may be made of organic materials. The organic encapsulation layer 132 is located between the first inorganic encapsulation layer 131 and the second inorganic encapsulation layer 133, ensuring that external moisture cannot enter the light-emitting element. However, this embodiment is not limited to this. For example, the encapsulation structure layer 13 may employ a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0119] In some examples, the first light-shielding layer 21 and the light-emitting area of ​​the light-emitting element may not overlap in the orthographic projection onto the substrate 100. The orthographic projection of the first light-shielding layer 21 onto the substrate 100 may be located within the orthographic projection range of the pixel definition layer 105 onto the substrate 100. The first light-shielding layer 21 may be fabricated using an organic light-shielding material.

[0120] In some examples, the first light-shielding layer 21 may have multiple openings, such as a first opening K11, a second opening K12, a third opening K13, and a fourth opening K14. The orthographic projection of the first opening K11 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate; for example, the orthographic projection of the first opening K11 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate. The orthographic projection of the second opening K12 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate; for example, the orthographic projection of the second opening K12 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate. The orthographic projection of the third opening K13 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate; for example, the orthographic projection of the third opening K13 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate. The orthographic projection of the fourth opening K14 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​at least one first micropixel P211 of the fourth subpixel P14 onto the substrate. For example, the orthographic projection of the fourth opening K14 onto the substrate may cover the orthographic projection of the light-emitting area of ​​a first micropixel P211 onto the substrate.

[0121] In some examples, the touch structure layer 14 may include: a touch barrier layer (TBL), a first touch conductive layer (TMA), a touch interlayer insulating layer (TLD), and a second touch conductive layer (TMB) sequentially disposed. The touch conductive layer 141 illustrated in Figures 2 and 3 may be either the first or second touch conductive layer. The first touch conductive layer may include multiple first touch electrodes, multiple second touch electrodes, and multiple first connecting portions; the multiple first touch electrodes, multiple second touch electrodes, and multiple first connecting portions may be formed in the same patterning process, and the first touch electrodes and first connecting portions may be an integrally connected structure. The second touch conductive layer may include multiple second connecting portions; the second connecting portions may be interconnected with adjacent second touch electrodes through vias formed in the touch interlayer insulating layer. In other examples, the second touch conductive layer may include multiple second connecting portions, and the first touch conductive layer may include multiple first touch electrodes, multiple second touch electrodes, and multiple first connecting portions. In other examples, the first touch conductive layer may include multiple first touch electrodes and multiple first connecting portions, with adjacent first touch electrodes connected through the first connecting portions; the second touch conductive layer may include multiple second touch electrodes and multiple second connecting portions, with adjacent second touch electrodes connected through the second connecting portions. In other examples, the second touch conductive layer may include multiple first touch electrodes and multiple first connecting portions, with adjacent first touch electrodes connected through the first connecting portions; the first touch conductive layer may include multiple second touch electrodes and multiple second connecting portions, with adjacent second touch electrodes connected through the second connecting portions. This embodiment is not limited in this respect. In other examples, the touch structure layer may include only one touch conductive layer, for example, it may include a touch blocking layer and a touch conductive layer arranged sequentially.

[0122] In some examples, the first touch electrode can be a drive (Tx) electrode and the second touch electrode can be a sensing (Rx) electrode. Alternatively, the first touch electrode can be a sensing (Rx) electrode and the second touch electrode can be a drive (Tx) electrode.

[0123] In some examples, the touch barrier layer and the inter-touch layer insulating layer can be inorganic insulating layers. For example, the touch barrier layer and the inter-touch layer insulating layer can be any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON), and can be single-layer, multi-layer, or composite layers. In other examples, the touch barrier layer and the inter-touch layer insulating layer can be organic insulating layers.

[0124] In some examples, the first and second touch conductive layers can be made of metallic materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or alloys of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). They can be single-layer structures or multi-layer composite structures, such as Ti / Al / Ti, ITO / Ag / ITO, etc.

[0125] In some examples, the orthographic projections of the first touch conductive layer and the second touch conductive layer onto the substrate 100 may be located within the orthographic projection range of the first light-shielding layer 21 onto the substrate 100.

[0126] In some examples, the touch conductive layer 141 can be reused as a second light-shielding layer 22 and a third light-shielding layer 23. The second light-shielding layer 22 and the third light-shielding layer 23 can be a single integrated structure. The touch conductive layer 141 can have multiple openings, such as a fifth opening K31, a sixth opening K32, a seventh opening K33, and an eighth opening K34. The orthographic projection of the fifth opening K31 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate; for example, the orthographic projection of the fifth opening K31 onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate. The orthographic projection of the sixth opening K32 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate; for example, the orthographic projection of the sixth opening K32 onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate. The orthographic projection of the seventh opening K33 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate. For example, the orthographic projection of the seventh opening K33 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate. The orthographic projection of the eighth opening K34 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​at least one micro-pixel P211 of the fourth sub-pixel P14 onto the substrate. For example, the orthographic projection of the eighth opening K34 onto the substrate may cover the orthographic projection of the light-emitting area of ​​a first micro-pixel P211 of the fourth sub-pixel P14 onto the substrate.

[0127] In some examples, the orthographic projection of the fifth opening K31 onto the substrate may coincide with the orthographic projection of the first opening K11 onto the substrate, or the orthographic projection of the first opening K11 onto the substrate may lie within the orthographic projection range of the fifth opening K31 onto the substrate. The orthographic projection of the sixth opening K32 onto the substrate may coincide with the orthographic projection of the second opening K12 onto the substrate, or the orthographic projection of the second opening K12 onto the substrate may lie within the orthographic projection range of the sixth opening K32 onto the substrate. The orthographic projection of the seventh opening K33 onto the substrate may coincide with the orthographic projection of the third opening K13 onto the substrate, or the orthographic projection of the third opening K13 onto the substrate may lie within the orthographic projection range of the seventh opening K33 onto the substrate. The orthographic projection of the eighth opening K34 onto the substrate may coincide with the orthographic projection of the fourth opening K14 onto the substrate, or the orthographic projection of the fourth opening K14 onto the substrate may lie within the orthographic projection range of the eighth opening K34 onto the substrate.

[0128] In some examples, the first filling layer 31, the second filling layer 32, and the third filling layer 33 can be made of organic transparent materials. The third filling layer 33 is located between the first light-shielding layer 21 and the touch structure layer 14. By adjusting the thickness of the third filling layer 33, the vertical distance between the touch conductive layer 141 of the touch structure layer 14 and the light-emitting element can be adjusted, thereby adjusting the emission angle of the light-emitting element. The second filling layer 32 is located between the touch structure layer 14 and the lens layer 41. By adjusting the thickness of the second filling layer 32 and the third filling layer 33, the vertical distance between the lens layer 41 and the light-emitting element can be adjusted, thereby adjusting the light emission angle of the lens layer.

[0129] In some examples, lens layer 41 may include multiple lens units corresponding to multiple sub-pixels, such as: a first lens unit 411 corresponding to a first sub-pixel P11, a second lens unit 412 corresponding to a second sub-pixel P12, a third lens unit 413 corresponding to a third sub-pixel P13, and a fourth lens unit 414 corresponding to a fourth sub-pixel P21. The fourth lens unit 414 may include multiple microlens units 4141 corresponding to multiple first micropixels P211 of the fourth sub-pixel P21. For example, the first lens unit 411, second lens unit 412, and third lens unit 413 may be approximately semi-cylindrical, and the multiple microlens units 4141 may be approximately hemispherical. The first lens unit 411, second lens unit 412, and third lens unit 413 can converge light towards the center, achieving the effect of reducing brightness attenuation and improving the front light emission effect. The multiple microlens units 4141 can block light emission from a wide viewing angle, thereby achieving a privacy protection effect.

[0130] In some examples, the orthographic projection of the first lens unit 411 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate; for example, the orthographic projection of the first lens unit 411 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the first sub-pixel P11 onto the substrate. Similarly, the orthographic projection of the second lens unit 412 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate; for example, the orthographic projection of the second lens unit 412 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the second sub-pixel P12 onto the substrate. Likewise, the orthographic projection of the third lens unit 413 onto the substrate at least partially overlaps with the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate; for example, the orthographic projection of the third lens unit 413 onto the substrate may cover the orthographic projection of the light-emitting area of ​​the third sub-pixel P13 onto the substrate.

[0131] In some examples, the spacing between adjacent microlens units 4141 can be zero. The spacing between microlens unit 4141 and its adjacent first lens unit 411 can be greater than zero. The maximum thickness of microlens unit 4141 can be the same as the maximum thickness of the first lens unit 411. The maximum thicknesses of the first lens unit 411, the second lens unit 412, and the third lens unit 413 can be the same. The spacing between the second lens unit 412 and its adjacent first lens unit 411 can be greater than zero, and the spacing between the second lens unit 412 and its adjacent third lens unit 413 can be greater than zero. In other examples, the spacing between adjacent lens units can be zero.

[0132] In some examples, the first sub-pixel P11 and the fourth sub-pixel P21 can be configured to emit red light, the second sub-pixel P12 and the fifth sub-pixel P22 can be configured to emit green light, and the third sub-pixel P13 and the sixth sub-pixel P23 can be configured to emit blue light. In the shared display mode of the display panel, the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13 of the shared pixel unit P1 can be illuminated. Within a single shared pixel unit P1, after the red light emitted by the first sub-pixel P11, the green light emitted by the second sub-pixel P12, and the blue light emitted by the third sub-pixel P13 are blocked by the light-shielding layer and deflected by the lens layer 41, the matching degree of brightness attenuation (L-Decay) of the red, green, and blue light with changing viewing angle decreases. For example, within a single shared pixel unit P1, the maximum length of the light-emitting area of ​​the third sub-pixel P13 along the first direction D1 is less than the maximum length of the light-emitting area of ​​the first sub-pixel P11 along the first direction D1, and also less than the maximum length of the light-emitting area of ​​the second sub-pixel P12 along the first direction D1. The maximum length of the light-emitting area of ​​the sub-pixel along the first direction D1 affects the display in the V direction. As the viewing angle in the V direction increases, the brightness decay rate of blue light is much faster than that of red and green light. As a result, in the shared display mode, there is a color shift at large viewing angles; for example, white light may appear yellowish at large viewing angles in the V direction.

[0133] In this example, the aforementioned first type of pixel unit may include a shared pixel unit P1, the aforementioned first type of sub-pixel may include a first sub-pixel P11 and a second sub-pixel P12, and the aforementioned second type of sub-pixel may include a third sub-pixel P13. The first type of lens unit 41a may include a first lens unit 411 corresponding to the first sub-pixel P11 and a second lens unit 412 corresponding to the second sub-pixel P12, and the second type of lens unit 41b may include a third lens unit 413 corresponding to the third sub-pixel P13. The refractive index of the first type of lens unit 41a may be greater than the refractive index of the second type of lens unit 41b. By reducing the refractive index of the third lens unit 413 corresponding to the third sub-pixel P13, the emission angle of the blue light emitted by the third sub-pixel P13 is increased, thereby slowing down the brightness attenuation rate of the blue light emitted by the third sub-pixel P13 with the increase of the viewing angle (e.g., the viewing angle with the V direction), further improving the color shift of the displayed white light.

[0134] In some examples, the privacy pixel unit P2 can be illuminated in the privacy display mode. The light emission angle of the privacy sub-pixel is adjusted by the light-shielding layer and microlens, which limits the viewing angle in the privacy display mode (e.g., light emission in the wide viewing angle direction is blocked). Within the viewing angle of the privacy display mode, the difference in brightness attenuation of red, green, and blue light with changing viewing angle has little impact on the color shift of the display. In this example, the aforementioned second type of pixel unit may include: privacy pixel unit P2. Privacy pixel unit P2 may include multiple privacy sub-pixels, and privacy sub-pixels may include multiple micropixels emitting light of the same color. The lens layer may also include: multiple microlens units (e.g., microlens unit 4141) corresponding to the multiple micropixels. In this example, the refractive index of the multiple microlens units may be the same as the refractive index of the first type of lens unit 41a to ensure the privacy effect. The multiple microlens units may be arranged in the same layer as the first type of lens unit, which can simplify the manufacturing process. This embodiment is not limited in this respect. In other examples, the refractive index of multiple microlens units may be the same as that of the second type of lens unit; or, the refractive index of some microlens units may be the same as that of the first type of lens unit, and the refractive index of some microlens units may be the same as that of the second type of lens unit.

[0135] In some examples, the refractive index of the first type of lens unit 41a can range from 1.57 to 1.75, and the refractive index of the second type of lens unit 41b can range from 1.45 to 1.56. The refractive index of the first filling layer 31 can be less than that of the lens layer 41. For example, the refractive index of the first filling layer 31 can range from 1.3 to 1.4. The refractive index setting in this example can help the lens units of the lens layer to converge light, thereby maximizing the light converging effect.

[0136] In some examples, the first light-shielding layer 21 may have a first type of opening corresponding to a first type of sub-pixel and a second type of opening corresponding to a second type of sub-pixel. In this example, the first type of opening may include: a first opening K11 corresponding to the first sub-pixel P11 and a second opening K12 corresponding to the second sub-pixel P12; the second type of opening may include: a third opening K13 corresponding to the third sub-pixel P13.

[0137] In this example, the second light-shielding layer 22 and the third light-shielding layer 23 can be an integral structure; the touch conductive layer 141 can be reused as the second light-shielding layer 22 and the third light-shielding layer 23. The second light-shielding layer 22 can correspond to a first type of sub-pixel (e.g., including a first sub-pixel P11 and a second sub-pixel P12) and a privacy pixel unit P2, and the third light-shielding layer 23 can correspond to a second type of sub-pixel (e.g., including a third sub-pixel P13). The second light-shielding layer 22 can have a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer 23 can have a fourth type of opening corresponding to the second type of sub-pixel. In this example, the third type of opening can include: a fifth opening K31 corresponding to the first sub-pixel P11 and a sixth opening K32 corresponding to the second sub-pixel P12; the fourth type of opening can include: a seventh opening K33 corresponding to the third sub-pixel P13.

[0138] In some examples, the orthographic projection of the first type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. For example, the minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel can be smaller than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. For example, the minimum distance W1 between the sidewall of the first opening K11 and the edge of the light-emitting area of ​​the first sub-pixel P11 can be smaller than the minimum distance W3 between the sidewall of the third opening K13 and the edge of the light-emitting area of ​​the third sub-pixel P13; the minimum distance W2 between the sidewall of the second opening K12 and the edge of the light-emitting area of ​​the second sub-pixel P12 can be smaller than the minimum distance W3 between the sidewall of the third opening K13 and the edge of the light-emitting area of ​​the third sub-pixel P13. In this example, the second type of opening (e.g., the third opening K13) of the first light-shielding layer has a greater outward extension distance from the light-emitting area of ​​the second type of sub-pixel than the first type of opening has a greater outward extension distance from the light-emitting area of ​​the first type of sub-pixel. This can increase the light emission angle corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13), thereby slowing down the brightness decay rate of the light emitted from the third sub-pixel P13 as the viewing angle increases, thus improving the resulting color shift in the display.

[0139] In some examples, the orthographic projection of the third type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. For example, the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel can be smaller than the minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. For example, the minimum distance W4 between the sidewall of the fifth opening K31 and the edge of the light-emitting area of ​​the first sub-pixel P11 can be smaller than the minimum distance W6 between the sidewall of the seventh opening K33 and the edge of the light-emitting area of ​​the third sub-pixel P13; the minimum distance W5 between the sidewall of the sixth opening K32 and the edge of the light-emitting area of ​​the second sub-pixel P12 can be smaller than the minimum distance W6 between the sidewall of the seventh opening K33 and the edge of the light-emitting area of ​​the third sub-pixel P13. In this example, the fourth type of opening (e.g., the seventh opening K33) of the third light-shielding layer has a greater outward distance from the light-emitting area of ​​the second type of sub-pixel than the outward distance from the third type of opening of the second light-shielding layer to the light-emitting area of ​​the first type of sub-pixel. This can increase the light emission angle corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13), thereby slowing down the brightness decay rate of the light emitted from the third sub-pixel P13 as the viewing angle increases, thus improving the resulting color shift in the display.

[0140] In some examples, the minimum distance between the sidewall of the first type of opening and the edge of the light-emitting region of the first type of sub-pixel can be smaller than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting region of the second type of sub-pixel. The orthographic projection of the third type of opening onto the substrate can cover the orthographic projection of the first type of opening onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate can cover the orthographic projection of the second type of opening onto the substrate. The minimum distance between the sidewall of the fourth type of opening and the sidewall of the second type of opening can be greater than the minimum distance between the sidewall of the third type of opening and the sidewall of the first type of opening. For example, the minimum distance between the sidewall of the seventh opening K33 and the sidewall of the third opening K13 (e.g., W6-W3) can be greater than the minimum distance between the sidewall of the fifth opening K31 and the sidewall of the first opening K11 (e.g., W4-W1), and can also be greater than the minimum distance between the sidewall of the sixth opening K32 and the sidewall of the second opening K12 (e.g., W5-W2). In this example, the outer extension distance of the fourth type of opening (e.g., the seventh opening K33) of the third light-shielding layer is greater than the outer extension distance of the second type of opening of the first light-shielding layer compared to the third type of opening of the second light-shielding layer compared to the first type of opening of the first light-shielding layer. This can increase the light emission angle corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13), thereby slowing down the brightness attenuation rate of the light emitted from the third sub-pixel P13 as the viewing angle increases, thus improving the resulting color shift in the display.

[0141] In some examples, the encapsulation structure layer 13 may include a first inorganic encapsulation layer 131, an organic encapsulation layer 132, and a second inorganic encapsulation layer 133 stacked sequentially. The thickness of the third filler layer 33 may be greater than or equal to the thickness of the organic encapsulation layer 132, and the thickness of the second filler layer 32 may be less than the thickness of the organic encapsulation layer 132. In this example, by setting the thickness relationship between the second filler layer 32 and the third filler layer 33, the vertical distance between the lens layer 41 and the touch conductive layer 141 of the touch structure layer 14 and the light-emitting element can be adjusted, thereby adjusting the light emission angle of the light-emitting element and thus adjusting the viewing angle brightness attenuation change of the light-emitting element.

[0142] In some examples, the display panel may further include a polarizer 15. The polarizer 15 may be located between the first filler layer 31 and the cover plate 16. In other examples, a polarizer may not be provided, and the display panel may include a color filter layer. For example, the color filter layer may be located on the side of the first filler layer away from the substrate, or the color filter layer may be integrated into the film layer.

[0143] In some examples, the fabrication process of the display panel in this example may include: fabricating a circuit structure layer of the display structure layer on a substrate; after forming a planarization layer 104, forming an anode layer by a patterning process (e.g., by sputtering); and then forming a pixel definition layer 105 with pixel openings by photoresist exposure and development. An organic light-emitting layer (e.g., including a hole injection layer, a hole transport layer, a light-emitting layer, an electron injection layer, and an electron transport layer sequentially disposed) and a cathode layer of the light-emitting element are deposited using an FMM mask; subsequently, an encapsulation structure layer 14 including a first inorganic encapsulation layer 131, an organic encapsulation layer 132, and a second inorganic encapsulation layer 133 is fabricated. After fabricating the second inorganic encapsulation layer 133, an organic light-shielding material (e.g., a black organic material) is coated on the surface of the second inorganic encapsulation layer 133 away from the substrate, and exposure and development are performed using an exposure machine and a first light-shielding mask to form a first light-shielding layer 21. Subsequently, a filler material is coated on the surface of the first light-shielding layer 21 away from the substrate. After exposure and development using an exposure machine and a first filler mask, a third filler layer 33 is formed. A touch structure layer 14 (e.g., including a first touch conductive layer and a second touch conductive layer) is fabricated on the surface of the third filler layer 33 away from the substrate using an exposure machine or similar equipment. After fabricating the touch structure layer 12, a filler material is coated on the surface of the second touch conductive layer away from the substrate. After exposure and development, a second filler layer 32 is fabricated. Subsequently, a lens layer 41 is fabricated on the surface of the second filler layer 32 away from the substrate. For example, a first light-extracting material can be coated on the surface of the second filler layer 32 away from the substrate. A first lens unit 41a and a microlens unit corresponding to the privacy pixel (e.g., including microlens unit 4141) can be fabricated using a first lens mask through a patterning process (e.g., including exposure, development, baking, etc.). Then, a second light-extracting material is coated, and a second lens unit 41b is fabricated using a second lens mask through a patterning process. The refractive index of the first light-extracting material is different from that of the second light-extracting material. For example, the refractive index of the first light-extracting material can be greater than that of the second light-extracting material.

[0144] Figure 4 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel. In Figure 4, the horizontal axis represents the viewing angle, illustrating the viewing angle range in the V direction from 0 degrees to 75 degrees; the vertical axis represents the percentage of luminous brightness, with the brightness of the 0-degree viewing angle (i.e., the positive viewing angle) as 100%, and the brightness of other viewing angles is characterized based on the brightness of the positive viewing angle. The solid line in Figure 4 represents the first example. In this first example, the refractive index of the second type of lens unit (e.g., the third lens unit 413) corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13) is less than the refractive index of the first type of lens unit (e.g., including the first lens unit 411 and the second lens unit 412) corresponding to the first type of sub-pixel (e.g., including the first sub-pixel P11 and the second sub-pixel P12). The remaining structures of the second type of lens unit and the first type of lens unit can be the same. The dashed line in Figure 4 represents the first reference example. In this first reference example, the refractive indices of the lens units corresponding to the first type of sub-pixel (e.g., including the first and second sub-pixels) and the second type of sub-pixel (including the third sub-pixel) are the same. The remaining structures of the display panel in the first reference example can be the same as the remaining structures of the display panel in the first example. As shown in Figure 4, after the third lens unit 413 adopts a smaller refractive index, the overall brightness attenuation trend of blue light becomes more gradual as the viewing angle increases. As shown in Figure 4, by differentiating the refractive indices of the first type of lens unit and the second type of lens unit, it is beneficial to slow down the brightness decay rate of the second type of sub-pixel corresponding to the change of the emission angle.

[0145] Figure 5 is a schematic diagram comparing the white light color shift trajectory of the display panel in the chromaticity diagram. Figure 5 shows the 1931 CIE chromaticity diagram. The solid line in Figure 5 represents the display situation of the first example, and the dashed line represents the display situation of the first reference example. The dashed circles in Figure 5 indicate the range of JNCD of 1.5, 3.5, 4.5, and 6. JNCD (Just Noticeable Color Difference) is used to reflect the degree of color shift; the smaller the value, the smaller the color shift and the more accurate the color display. As shown in Figure 5, within a viewing angle range of 45 degrees, the color shift of the first example fluctuates within the JNCD range of 3.5. It can be seen that in the first example, after the third lens unit 413 adopts a smaller refractive index, the white light display color shift of the display panel in the shared display mode is greatly improved.

[0146] This embodiment differentiates the refractive index of the first type of lens unit (e.g., including the first lens unit and the second lens unit) corresponding to the first type of sub-pixel (e.g., including the first sub-pixel and the second sub-pixel) of the first type of pixel unit, and the second type of lens unit (e.g., including the third sub-pixel) corresponding to the second type of sub-pixel (e.g., including the third sub-pixel). This reduces the brightness attenuation of light emitted from the third type of sub-pixel as the viewing angle increases, thereby improving the color shift in the display. For example, it can improve the yellowish color shift of white light in the display panel in shared display mode.

[0147] In other examples, the first type of pixel unit may include the aforementioned privacy pixel unit. For instance, the lens layer may not have lens units corresponding to the shared pixel unit, and the multiple sub-pixels of the privacy pixel unit can be divided into at least two categories. For example, the first type of sub-pixels may include the aforementioned fourth and fifth sub-pixels, and the second type of sub-pixels may include the aforementioned sixth sub-pixel. The fourth, fifth, and sixth sub-pixels can be configured to emit different colors of light. For example, the sixth sub-pixel may be configured to emit blue light, the fifth sub-pixel may be configured to emit green light, and the fourth sub-pixel may be configured to emit red light. The lens layer may include a first type of lens unit and a second type of lens unit. The first type of lens unit may correspond to the fourth and fifth sub-pixels, and the second type of lens unit may correspond to the sixth sub-pixel. By differentiating the refractive indices of the first type of lens unit and the second type of lens unit, the color shift that exists within a certain viewing angle range in the privacy display mode can be improved.

[0148] In other examples, the first type of pixel unit may include the aforementioned privacy pixel unit and shared pixel unit. An adjacent privacy pixel unit and a shared pixel unit can be considered as one first type of pixel unit. Multiple sub-pixels within a first type of pixel unit can be divided into at least two categories. For example, the first type of sub-pixels may include the aforementioned first sub-pixel, second sub-pixel, fourth sub-pixel, and fifth sub-pixel, and the second type of sub-pixels may include the aforementioned third sub-pixel and sixth sub-pixel. The lens layer may include first type lens units corresponding to the first type of sub-pixels and second type lens units corresponding to the second type of sub-pixels. By differentiating the refractive indices of the first type of lens units and the second type of lens units, the color shift in the display panel can be improved.

[0149] Figure 6 is another partial cross-sectional view along the QQ' direction in Figure 1. Figure 6 illustrates the partial cross-sectional structure of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13. In this example, the first type of pixel unit may include two types of sub-pixels: the first type of sub-pixels may include the first sub-pixel P11 and the second sub-pixel P12, and the second type of sub-pixels may include the third sub-pixel P13. The lens layer 41 may include a first type of lens unit 41a and a second type of lens unit 41b. The first type of lens unit 41a may include a first lens unit 411 corresponding to the first sub-pixel P11 and a second lens unit 412 corresponding to the second sub-pixel P12; the second type of lens unit 41b may include a third lens unit 413 corresponding to the third sub-pixel P13.

[0150] In some examples, the maximum thickness of the first type of lens unit 41a can differ from the maximum thickness of the second type of lens unit 41b. For example, the maximum thickness of the first type of lens unit 41a can be the maximum distance H1 between the surface of the first type of lens unit 41a away from the substrate and the surface of the first type of lens unit 41a close to the substrate, and the maximum thickness of the second type of lens unit 41b can be the maximum distance H2 between the surface of the second type of lens unit 41b away from the substrate and the surface of the second type of lens unit close to the substrate. The maximum thickness of the first type of lens unit 411 and the maximum thickness of the second type of lens unit 412 can be the same, for example, both being H1. For example, H1 can be greater than H2, with H1 ranging from 3 micrometers to 6 micrometers and H2 ranging from 1 micrometer to 3 micrometers. In other examples, the maximum thickness of the first type of lens unit can be less than the maximum thickness of the second type of lens unit. This example, by differentiating the maximum thickness of the two types of lens units corresponding to the two types of sub-pixels, can adjust the light emission angle corresponding to one type of sub-pixel, thereby mitigating the rate of brightness attenuation of the emitted light from that type of sub-pixel with increasing viewing angle, and further improving the display color shift.

[0151] In other examples, the first type of pixel unit may include three types of sub-pixels emitting different colors of light. The first type of sub-pixel may include a first sub-pixel P11, the second type of sub-pixel may include a second sub-pixel P12, and the third type of sub-pixel may include a third sub-pixel P13. The lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel, a second type of lens unit corresponding to the second type of sub-pixel, and a third type of lens unit corresponding to the third type of sub-pixel. For example, the first type of lens unit may include a first lens unit 411, the second type of lens unit may include a second lens unit 412, and the third type of lens unit may include a third lens unit 413. The thicknesses of the first type of lens unit, the second type of lens unit, and the third type of lens unit may all be different. For example, the maximum thickness of the first type of lens unit may be greater than the maximum thickness of the second type of lens unit, and the maximum thickness of the second type of lens unit may be greater than the maximum thickness of the third type of lens unit. This embodiment is not limited in this respect. This example can set the maximum thickness of the three types of lens units corresponding to the three types of sub-pixels based on the brightness decay of the emitted light rays with the viewing angle. For example, the maximum thickness of the lens unit corresponding to the type of sub-pixel whose emitted light rays decay faster with the increase of the viewing angle can be smaller than the maximum thickness of the other types of lens units. This increases the brightness decay rate of the emitted light rays of that type of sub-pixel with the increase of the viewing angle (e.g., with the increase of the viewing angle in the V direction), further improving the color shift in white light display.

[0152] In some examples, during the fabrication of the display panel of this example, after fabricating the second filling layer 32, a first light-extracting material is coated on the surface of the second filling layer 32 away from the substrate. A first type of lens unit 41a (e.g., including a first lens unit 411 and a second lens unit 412) is fabricated using a patterning process (e.g., including exposure, development, and baking steps) with a first lens mask. Subsequently, a second type of lens unit 41b (e.g., including a third lens unit 413) is fabricated using a patterning process with a second lens mask. In this example, the first and second type of lens units use the same material. Compared to the example shown in FIG3, this example does not require the addition of a second light-extracting material; the lens layer is fabricated using the first light-extracting material, the first lens mask, and the second lens mask. The remaining fabrication process of the display panel of this example can be referred to the description of the foregoing embodiments, and therefore will not be repeated here. In some examples, the refractive indices of the first and second type of lens units can be the same. The refractive index of the lens layer 41 can be greater than the refractive index of the first filling layer 31. For example, the refractive index of the lens layer 41 can be in the range of 1.57 to 1.75, and the refractive index of the first filling layer 31 can be in the range of 1.3 to 1.4.

[0153] Figure 7 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel. In Figure 7, the horizontal axis represents the viewing angle in the V direction, and the vertical axis represents the percentage of luminous brightness. The solid line in Figure 7 represents the second example; in the second example, the maximum thickness of the second type of lens unit (e.g., the third lens unit 413) corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13) is less than the maximum thickness of the first type of lens unit (e.g., including the first sub-pixel P11 and the second sub-pixel P12) corresponding to the first type of sub-pixel, and the refractive indices of the first type of lens unit and the second type of lens unit can be the same. The dashed line in Figure 7 represents the second reference example. In the second reference example, the maximum thickness of the lens units corresponding to the first type of sub-pixel (e.g., including the first and second sub-pixels) and the second type of sub-pixel (including the third sub-pixel) can be the same, and the remaining structure of the display panel in the second reference example can be the same as the remaining structure of the display panel in the second example. As shown in Figure 7, after the maximum thickness of the third lens unit 413 is reduced, the overall brightness attenuation trend of blue light becomes smoother as the viewing angle increases. As shown in Figure 7, by differentiating the maximum thickness of the first type of lens unit and the second type of lens unit, it is beneficial to slow down the brightness decay rate of the second type of sub-pixel corresponding to the change of the emission angle.

[0154] Figure 8 is a comparative diagram of the white light color shift trajectory of the display panel in the chromaticity diagram. The solid line in Figure 8 represents the display situation of the second example, and the dashed line represents the display situation of the second reference example. As shown in Figure 8, within a viewing angle range of 45 degrees, the color shift of the second example fluctuates within the JNCD 3.5 range. It can be seen that in the second example, after reducing the maximum thickness of the third lens unit 413, the white light display color shift of the display panel in the shared display mode is greatly improved.

[0155] This embodiment differentiates the maximum thickness of the first type of lens unit corresponding to the first type of sub-pixel of the first type of pixel unit and the second type of lens unit corresponding to the second type of sub-pixel. This increases the light emission angle corresponding to the second type of sub-pixel, thereby reducing the brightness attenuation of the emitted light from the second type of sub-pixel as the viewing angle increases. This improves color shift, such as improving the white light color shift that exists in the display panel in shared display mode. Further descriptions of the display panel in this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0156] Figure 9 is another partial cross-sectional view along the QQ' direction in Figure 1. Figure 9 illustrates the partial cross-sectional structure of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13. In this example, the first type of pixel unit may include two types of sub-pixels: the first type of sub-pixels may include the first sub-pixel P11 and the second sub-pixel P12, and the second type of sub-pixels may include the third sub-pixel P13. The lens layer 41 may include a first lens unit 411 corresponding to the first sub-pixel P11, a second lens unit 412 corresponding to the second sub-pixel P12, and a third lens unit 413 corresponding to the third sub-pixel P13. The first type of lens unit may include the first lens unit 411 and the second lens unit 412, and the second type of lens unit may include the third lens unit 413. The refractive indices of the first type of lens unit and the second type of lens unit may be different, or the maximum thicknesses of the first type of lens unit and the second type of lens unit may be different. In other examples, the refractive indices of the first lens unit, the second lens unit, and the third lens unit may be the same, and the maximum thickness may be the same. In some examples, the refractive index of the lens layer 41 can be greater than that of the first filling layer 31. The refractive index of the lens layer 41 can range from 1.57 to 1.75, and the refractive index of the first filling layer 31 can range from 1.3 to 1.4.

[0157] In some examples, as shown in Figure 9, the second light-shielding layer 22 and the third light-shielding layer 23 can be set independently. The minimum distance between the third light-shielding layer 23 and the lens layer 41 can be greater than the minimum distance between the second light-shielding layer 22 and the lens layer 41. For example, the touch conductive layer 141 of the touch structure layer 14 can be reused as the second light-shielding layer 22. The third light-shielding layer 23 can be located on the side of the touch structure layer 14 closer to the first light-shielding layer 21. The third light-shielding layer 23 can be set corresponding to the third sub-pixel P13. For example, the third light-shielding layer 23 can be made of a light-absorbing material.

[0158] Figure 10A is a partial planar schematic diagram of the second light-shielding layer 22 in at least one embodiment of the present disclosure. Figure 10B is a partial planar schematic diagram of the third light-shielding layer 23 in at least one embodiment of the present disclosure. In some examples, as shown in Figures 10A and 10B, the second light-shielding layer 22 may have a fifth opening K31 and a sixth opening K32. The orthographic projection of the fifth opening K31 onto the substrate may cover the orthographic projection of the light-emitting area P110 of the first sub-pixel onto the substrate, and the orthographic projection of the sixth opening K32 onto the substrate may cover the orthographic projection of the light-emitting area P120 of the second sub-pixel onto the substrate. The orthographic projections of the second light-shielding layer 22 and the light-emitting area P130 of the third sub-pixel onto the substrate may not overlap. The third light-shielding layer 23 may have a seventh opening K33, and the orthographic projection of the seventh opening K33 onto the substrate may cover the orthographic projection of the light-emitting area P130 of the third sub-pixel onto the substrate.

[0159] In some examples, the orthographic projection of the third light-shielding layer 23 onto the substrate may not overlap with, or may only partially overlap with, the orthographic projection of the second light-shielding layer 22 onto the substrate. Similarly, the orthographic projection of the third light-shielding layer 23 onto the substrate may not overlap with the orthographic projections of the fifth opening K31 and the sixth opening K32 of the second light-shielding layer 22 onto the substrate, and the orthographic projection of the second light-shielding layer 22 onto the substrate may not overlap with the orthographic projection of the seventh opening K33 of the third light-shielding layer 23 onto the substrate. In some examples, as shown in Figure 9, the minimum distance H3 between the surface of the third light-shielding layer 23 away from the substrate and the surface of the second light-shielding layer 22 away from the substrate may be greater than or equal to the minimum distance H4 between the surface of the third light-shielding layer 23 near the substrate and the surface of the first light-shielding layer 21 away from the substrate. For example, H3 may be 3 to 5 micrometers; H4 may be greater than or equal to 4 micrometers.

[0160] In this example, moving the position of the third light-shielding layer 23 corresponding to the second type of sub-pixel (such as the third sub-pixel P13) closer to the substrate relative to the position of the second light-shielding layer 22 corresponding to the first and second sub-pixels can increase the light emission angle corresponding to the second type of sub-pixel. This reduces the brightness attenuation of the emitted light from the second type of sub-pixel with increasing viewing angle, thereby improving the color shift issue. In some examples, the third sub-pixel P13 can be configured to emit blue light. However, this embodiment is not limited to this. In other examples, the third sub-pixel can be configured to emit red or green light. In some examples, the third filling layer 33 can include a first sub-layer 331 and a second sub-layer 332. Compared to the aforementioned display panel fabrication process, in this example, after fabricating the first light-shielding layer 21, the first sub-layer 331 of the third filling layer 33 is fabricated using a filling material and a second filling mask. Subsequently, the third light-shielding layer 23 is fabricated using a patterning process with the second light-shielding mask. Then, the second sub-layer 332 of the third filling layer 33 is fabricated using the filling material and the first filling mask to ensure the flatness of the film layers in the subsequently fabricated touch structure layer 14. The material of the third light-shielding layer 23 can be the same as that of the first light-shielding layer 21. This example adds the use of a second filling mask and a second light-shielding mask compared to the embodiments shown in Figures 3 and 6.

[0161] Figure 11 is a comparison of the viewing angle brightness attenuation curves of blue light emitted from the third sub-pixel of the display panel. In Figure 11, the horizontal axis represents the viewing angle in the V direction, and the vertical axis represents the percentage of luminous intensity. The solid line in Figure 11 represents the blue light brightness attenuation curve of the third example. In the third example, the minimum distance between the third light-shielding layer corresponding to the second type of sub-pixel and the lens layer is greater than the minimum distance between the second light-shielding layer corresponding to the first type of sub-pixel and the lens layer. The refractive indices of the first type of lens unit corresponding to the first type of sub-pixel and the second type of lens unit corresponding to the second type of sub-pixel can be the same, and their maximum thicknesses can be the same. The dashed line in Figure 11 represents the case of the third reference example. In the third reference example, the second and third light-shielding layers can be an integral structure, and the minimum distance between them and the lens layer can be the same. The remaining structure of the display panel in the third reference example can be the same as the remaining structure of the display panel in the third example. As shown in Figure 11, in the third example, as the viewing angle increases, the overall brightness attenuation trend of blue light becomes more gradual. As shown in Figure 11, by differentiating the positions of the third light-shielding layer corresponding to the second type of sub-pixels and the second light-shielding layer corresponding to the first type of sub-pixels, it is beneficial to slow down the brightness decay rate of the second type of sub-pixels corresponding to the change of the emission angle.

[0162] Figure 12 is a comparative diagram of the white light color shift trajectory of the display panel in the chromaticity diagram. The solid line in Figure 12 represents the display situation of the third example, and the dashed line represents the display situation of the third reference example. As shown in Figure 12, within a viewing angle range of 45 degrees, the color shift of the third example fluctuates within the JNCD 4.5 range. It can be seen that in the third example, after moving the third light-shielding layer corresponding to the second type of sub-pixel downward (i.e., moving the third light-shielding layer closer to the substrate), the white light display color shift of the display panel in the shared display mode is greatly improved.

[0163] This embodiment differentiates the placement of the second light-shielding layer corresponding to the first type of sub-pixels of the first type of pixel unit and the third blocking layer corresponding to the second type of sub-pixels. This increases the light emission angle of the second type of sub-pixels, thereby reducing the brightness attenuation of the emitted light from the second type of sub-pixels as the viewing angle increases. This improves color shift, such as reducing the yellowish color shift of white light in shared display mode. Further descriptions of the display panel in this example can be found in the foregoing embodiments and will not be repeated here.

[0164] Figure 13 is another partial cross-sectional view along the QQ' direction in Figure 1. Figure 13 illustrates the partial cross-sectional structure of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13. In this example, the first type of pixel unit may include two types of sub-pixels: the first type of sub-pixels may include the first sub-pixel P11 and the second sub-pixel P12, and the second type of sub-pixels may include the third sub-pixel P13. The lens layer 41 may include a first lens unit 411 corresponding to the first sub-pixel P11, a second lens unit 412 corresponding to the second sub-pixel P12, and a third lens unit 413 corresponding to the third sub-pixel P13. The first type of lens unit may include the first lens unit 411 and the second lens unit 412, and the second type of lens unit may include the third lens unit 413. The refractive indices of the first type of lens unit and the second type of lens unit may be different, or the maximum thicknesses of the first type of lens unit and the second type of lens unit may be different. In other examples, the refractive indices of the first lens unit, the second lens unit, and the third lens unit may be the same, and the maximum thickness may be the same. In some examples, the refractive index of the lens layer 41 can be greater than that of the first filling layer 31. The refractive index of the lens layer 41 can range from 1.57 to 1.75, and the refractive index of the first filling layer 31 can range from 1.3 to 1.4.

[0165] In some examples, the first light-shielding layer 21 may have a first type of opening corresponding to a first type of sub-pixel and a second type of opening corresponding to a second type of sub-pixel. In this example, the first type of opening may include: a first opening K11 corresponding to the first sub-pixel P11 and a second opening K12 corresponding to the second sub-pixel P12; the second type of opening may include: a third opening K13 corresponding to the third sub-pixel P13.

[0166] In this example, the second light-shielding layer 22 and the third light-shielding layer 23 can be an integral structure; the touch conductive layer 141 can be reused as the second light-shielding layer 22 and the third light-shielding layer 23. The second light-shielding layer 22 can be configured to correspond to a first type of sub-pixel (e.g., including a first sub-pixel P11 and a second sub-pixel P12), and the third light-shielding layer 23 can be configured to correspond to a second type of sub-pixel (e.g., including a third sub-pixel P13). The second light-shielding layer 22 can have a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer 23 can have a fourth type of opening corresponding to the second type of sub-pixel. In this example, the third type of opening can include: a fifth opening K31 corresponding to the first sub-pixel P11 and a sixth opening K32 corresponding to the second sub-pixel P12; the fourth type of opening can include: a seventh opening K33 corresponding to the third sub-pixel P13.

[0167] In some examples, the orthographic projection of the first type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the second type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. For example, the minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel can be smaller than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. For example, the minimum distance W1 between the sidewall of the first opening K11 and the edge of the light-emitting area of ​​the first sub-pixel P11 can be smaller than the minimum distance W3 between the sidewall of the third opening K13 and the edge of the light-emitting area of ​​the third sub-pixel P13; the minimum distance W2 between the sidewall of the second opening K12 and the edge of the light-emitting area of ​​the second sub-pixel P12 can be smaller than the minimum distance W3 between the sidewall of the third opening K13 and the edge of the light-emitting area of ​​the third sub-pixel P13. For example, W3 can be greater than or equal to 5 micrometers and less than or equal to 7 micrometers; W1 and W2 can be greater than or equal to 0.5 micrometers and less than or equal to 1 micrometer, for example, approximately 0.64 micrometers. In this example, the second type of opening (e.g., the third opening K13) of the first light-shielding layer has a greater outward extension distance from the light-emitting area of ​​the second type of sub-pixel than the first type of opening has a greater outward extension distance from the light-emitting area of ​​the first type of sub-pixel. This can increase the light emission angle corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13), thereby slowing down the brightness decay rate of the light emitted from the third sub-pixel P13 as the viewing angle increases, thus improving the resulting color shift in the display.

[0168] In some examples, the orthographic projection of the third type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the first type of sub-pixel onto the substrate, and the orthographic projection of the fourth type of opening onto the substrate can cover the orthographic projection of the light-emitting area of ​​the second type of sub-pixel onto the substrate. For example, the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel can be less than the minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. For example, the minimum distance W4 between the sidewall of the fifth opening K31 and the edge of the light-emitting area of ​​the first sub-pixel P11 can be less than the minimum distance W6 between the sidewall of the seventh opening K33 and the edge of the light-emitting area of ​​the third sub-pixel P13; the minimum distance W5 between the sidewall of the sixth opening K32 and the edge of the light-emitting area of ​​the second sub-pixel P12 can be less than the minimum distance W6 between the sidewall of the seventh opening K33 and the edge of the light-emitting area of ​​the third sub-pixel P13. For example, W6 can be greater than or equal to 5 micrometers and less than or equal to 7 micrometers; W4 and W5 can be greater than or equal to 1 micrometer and less than or equal to 1.5 micrometers, for example, approximately 1.12 micrometers. In this example, the fourth type of opening (e.g., the seventh opening K33) of the third light-shielding layer has a greater outward distance from the light-emitting area of ​​the second type of sub-pixel than the outward distance from the third type of opening of the second light-shielding layer to the light-emitting area of ​​the first type of sub-pixel. This can increase the light emission angle corresponding to the second type of sub-pixel (e.g., the third sub-pixel P13), thereby slowing down the brightness decay rate of the light emitted from the third sub-pixel P13 as the viewing angle increases, thus improving the resulting color shift in the display.

[0169] The fabrication process of the display panel in this example does not require the addition of a mask, compared to the fabrication process of the aforementioned embodiments.

[0170] Figure 14 is a comparison of the viewing angle brightness decay curves of blue light emitted from the third sub-pixel of the display panel. The horizontal axis in Figure 14 represents the viewing angle in the V direction, and the vertical axis represents the percentage of luminous intensity. The solid line in Figure 14 represents the blue light brightness decay curve of the fourth example; in the fourth example, the outer distance of the second type of opening (e.g., the third opening K13) of the first light-shielding layer relative to the luminous area of ​​the second type of sub-pixel (e.g., approximately 7 micrometers) is greater than the outer distance of the first type of opening relative to the luminous area of ​​the first type of sub-pixel (e.g., approximately 0.68 micrometers). The dashed line in Figure 14 represents the case of the fourth reference example; in the fourth reference example, the outer distance of the second type of opening (e.g., the third opening K13) of the first light-shielding layer relative to the luminous area of ​​the second type of sub-pixel can be the same as the outer distance of the first type of opening relative to the luminous area of ​​the first type of sub-pixel, for example, approximately 0.68 micrometers; the remaining structure of the display panel in the fourth reference example can be the same as the remaining structure of the display panel in the fourth example. As shown in Figure 14, in the fourth example, the overall brightness decay trend of blue light becomes more gradual as the viewing angle increases. As shown in Figure 14, the second type of opening (e.g., the third opening K13) of the first light-shielding layer has a greater outward expansion distance of the light-emitting area of ​​the second type of sub-pixel than the first type of opening has a greater outward expansion distance of the light-emitting area of ​​the first type of sub-pixel. This can help slow down the brightness decay rate of the second type of sub-pixel corresponding to the change of the emission angle.

[0171] Figure 15 is a comparative schematic diagram of the white light color shift trajectory of the display panel in the chromaticity diagram. The solid line in Figure 15 represents the display situation of the fourth example, and the dashed line represents the display situation of the fourth reference example. As shown in Figure 15, within a viewing angle range of 45 degrees, the color shift of the fourth example fluctuates within the JNCD 3.5 range. It can be seen that in the fourth example, after increasing the outward distance of the second type of opening (e.g., the third opening K13) of the first light-shielding layer relative to the light-emitting area of ​​the second type of sub-pixel, the white light display color shift of the display panel in the shared display mode is greatly improved.

[0172] This embodiment differentiates the occlusion ranges of the first and second type of sub-pixels by using the first, second, and third light-shielding layers. This increases the light emission angle corresponding to the second type of sub-pixels, thereby reducing the brightness attenuation of the emitted light from the second type of sub-pixels as the viewing angle increases. This improves color shift, for example, addressing the yellowish color shift in white light display under shared display mode. Further descriptions of the display panel in this example can be found in the foregoing embodiments and will not be repeated here.

[0173] Figure 16 is another partial cross-sectional view along the QQ' direction in Figure 1. Figure 16 illustrates the partial cross-sectional structure of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13. In this example, the first type of pixel unit can include two types of sub-pixels: the first type of sub-pixels can include the first sub-pixel P11 and the second sub-pixel P12, and the second type of sub-pixels can include the third sub-pixel P13. The lens layer 41 can include a first lens unit 411 corresponding to the first sub-pixel P11 and a second lens unit 412 corresponding to the second sub-pixel P12. The refractive indices of the first lens unit 411 and the second lens unit 412 can be the same. The thickness of the third lens unit corresponding to the third sub-pixel P13 can be 0, that is, there is no lens unit corresponding to the third sub-pixel P13. The maximum thickness of the first lens unit 411 and the second lens unit 412 can be the same. In other examples, the maximum thickness of the first lens unit 411 and the second lens unit 412 can be different. In other examples, the refractive indices of the first lens unit 411 and the second lens unit 412 can be different.

[0174] Figure 17 is a comparison of the viewing angle brightness decay curves of blue light emitted from the third sub-pixel of the display panel. In Figure 17, the horizontal axis represents the viewing angle in the V direction, and the vertical axis represents the percentage of luminous brightness. The solid line in Figure 17 represents the blue light brightness decay curve of the fifth example; in the fifth example, the thickness of the second type of lens unit corresponding to the second type of sub-pixel (such as the third sub-pixel P13) is 0. The dashed line in Figure 17 represents the case of the fifth reference example; in the fifth reference example, the maximum thickness of the second type of lens unit corresponding to the second type of sub-pixel can be the same as the maximum thickness of the first type of lens unit corresponding to the first type of sub-pixel, and the rest of the structure of the display panel in the fifth reference example can be the same as the rest of the structure of the display panel in the fifth example. As shown in Figure 17, in the fifth example, as the viewing angle increases, the overall brightness decay trend of blue light becomes more gradual. As can be seen from Figure 17, by setting the thickness of the second type of lens unit to 0, it is beneficial to slow down the brightness decay rate of the emission viewing angle corresponding to the second type of sub-pixel.

[0175] Figure 18 is a comparative diagram of the white light color shift trajectory of the display panel in the chromaticity diagram. The solid line in Figure 18 represents the display of the fifth example, and the dashed line represents the display of the fifth reference example. As shown in Figure 18, within a viewing angle of 45 degrees, the color shift of the fifth example fluctuates within the JNCD 6 range. It can be seen that in the fifth example, omitting the second type of lens unit greatly improves the white light color shift of the display panel in shared display mode.

[0176] This embodiment, by eliminating the second type of lens unit corresponding to the second type of sub-pixel of the first type of pixel unit, can increase the light emission angle corresponding to the second type of sub-pixel. This reduces the brightness attenuation of the emitted light from the second type of sub-pixel as the viewing angle increases, thereby improving color shift, such as improving the white light color shift present in the display panel during shared display mode. Further descriptions of the display panel in this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0177] In other examples, the above embodiments can be combined with each other. For instance, the refractive index of the first type of lens unit corresponding to the first type of sub-pixel can be different from the refractive index of the second type of lens unit corresponding to the second type of sub-pixel, and the thickness of the second type of lens unit corresponding to the second type of sub-pixel can be 0. As another example, the refractive index of the first type of lens unit corresponding to the first type of sub-pixel can be different from the refractive index of the second type of lens unit corresponding to the second type of sub-pixel, and the position of the third light-shielding layer corresponding to the second type of sub-pixel can be moved closer to the substrate relative to the position of the second light-shielding layer corresponding to the first type of sub-pixel. As another example, the refractive index of the first type of lens unit corresponding to the first type of sub-pixel can be different from the refractive index of the second type of lens unit corresponding to the second type of sub-pixel, and the outward expansion distance of the first light-shielding layer relative to the light-emitting area of ​​the second type of sub-pixel is greater than the outward expansion distance of the first light-shielding layer relative to the light-emitting area of ​​the first type of sub-pixel. As yet another example, the maximum thickness of the first type of lens unit corresponding to the first type of sub-pixel can be different from the maximum thickness of the second type of lens unit corresponding to the second type of sub-pixel, and the position of the third light-shielding layer corresponding to the second type of sub-pixel can be moved closer to the substrate relative to the position of the second light-shielding layer corresponding to the first type of sub-pixel. For example, the maximum thickness of the first type of lens unit corresponding to the first type of sub-pixel may be different from the maximum thickness of the second type of lens unit corresponding to the second type of sub-pixel, and the outward expansion distance of the first light-shielding layer relative to the light-emitting area of ​​the second type of sub-pixel may be greater than the outward expansion distance of the first light-shielding layer relative to the light-emitting area of ​​the first type of sub-pixel. This embodiment does not limit this.

[0178] In other examples, the second type of sub-pixel can be configured to emit at least one of red, blue, and green light, while the first type of sub-pixel can be configured to emit light of a different color than that of the second type of sub-pixel. For example, the second type of sub-pixel can be configured to emit red or green light, and the color shift caused by the difference in brightness attenuation between red or green light and other colors of light with varying viewing angles can be improved by adjusting the refractive index or thickness of the second type of lens unit corresponding to the second type of sub-pixel. This embodiment is not limited in this respect.

[0179] In other examples, when the light-emitting areas of the first type of sub-pixel and the second type of sub-pixel have a length difference in the second direction corresponding to the H direction, after the light emitted from the first type of sub-pixel and the second type of sub-pixel is blocked by the light-shielding layer and deflected by the lens layer, as the viewing angle in the H direction increases, the brightness decay rate of different colors of light becomes different, resulting in display color shift. The display color shift caused by the difference in brightness decay of different colors of light with changing viewing angle can be improved by adjusting the refractive index or thickness of the first type of lens unit corresponding to the first type of sub-pixel and the second type of lens unit corresponding to the second type of sub-pixel.

[0180] In other examples, when the light-emitting areas of the first type of subpixel and the second type of subpixel have a length difference affecting the display in the second direction corresponding to the H direction, and also have a length difference affecting the display in the first direction corresponding to the V direction, the display color shift caused by the difference in brightness attenuation of different colors of light with changing viewing angle can be improved by adjusting the refractive index or thickness of the first type of lens unit corresponding to the first type of subpixel and the second type of lens unit corresponding to the second type of subpixel.

[0181] In other examples, the display panel can be a fixed privacy display panel. For instance, a fixed privacy display panel can be used in the automotive field to prevent reflections on the windshield. For example, the display panel may include multiple fixed privacy pixel units, and each fixed privacy pixel unit may include multiple privacy sub-pixels. The first type of pixel unit can be a fixed privacy pixel unit. Privacy sub-pixels emitting different colors of light within the fixed privacy pixel unit are divided into at least two types of sub-pixels. The at least two types of lens units corresponding to the at least two types of sub-pixels are designed differently (e.g., different refractive indices or different maximum thicknesses) to improve the color shift caused by the difference in brightness attenuation of different colors of light with changing viewing angles within a certain viewing angle range (e.g., greater than 30 degrees), thus ensuring a large viewing angle display effect in the V direction.

[0182] Figure 19 is another partial planar schematic diagram of a display panel according to at least one embodiment of the present disclosure. In some examples, as shown in Figure 19, the display panel may include a plurality of first-type pixel units. The display panel of this example may be a display panel without privacy protection. A single first-type pixel unit may include a first sub-pixel P11, a second sub-pixel P12, and a third sub-pixel P13. The first-type pixel unit may include at least two types of sub-pixels. For example, it may include a first-type sub-pixel and a second-type sub-pixel. The first-type sub-pixel may include the first sub-pixel P11 and the second sub-pixel P12, and the second-type sub-pixel may include the third sub-pixel P13. Wherein, the orthographic projection of the light-emitting areas of the first sub-pixel P11, the second sub-pixel P12, and the third sub-pixel P13 onto the substrate may be approximately rectangular. The maximum length of the light-emitting area of ​​the third sub-pixel P13 along the first direction D1 may be less than the maximum length of the light-emitting area of ​​the first sub-pixel P11 along the first direction D1, and less than the maximum length of the light-emitting area of ​​the second sub-pixel P12 along the first direction D1. The lens layer may include: a first-type lens unit corresponding to the first-type sub-pixels, and a second-type lens unit corresponding to the second-type sub-pixels. The arrangement of the first type of lens unit and the second type of lens unit can be referred to the description in the foregoing embodiments, and therefore will not be repeated here.

[0183] This embodiment also provides a display panel, including: a substrate, a display structure layer disposed on the substrate, and a lens layer. The display structure layer includes a plurality of first-type pixel units, each first-type pixel unit including at least two types of sub-pixels emitting different colors of light. The lens layer is located on the side of the display structure layer away from the substrate and includes at least two types of lens units corresponding to the at least two types of sub-pixels; the orthographic projection of at least one type of lens unit onto the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the corresponding type of sub-pixel onto the substrate. The maximum thickness of the at least one type of lens unit is different from the maximum thickness of the other types of lens units.

[0184] For example, the first type of pixel unit may include: a first type of sub-pixel and a second type of sub-pixel that emit different colors of light; the lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel and a second type of lens unit corresponding to the second type of sub-pixel; the maximum thickness of the first type of lens unit may be greater than the maximum thickness of the second type of lens unit; or, the maximum thickness of the first type of lens unit may be less than the maximum thickness of the second type of lens unit.

[0185] For example, the first type of pixel unit may include: a first type of sub-pixel, a second type of sub-pixel, and a third type of sub-pixel that emit different colors of light; the lens layer may include: a first type of lens unit corresponding to the first type of sub-pixel, a second type of lens unit corresponding to the second type of sub-pixel, and a third type of lens unit corresponding to the third type of sub-pixel; wherein, the maximum thickness of the first type of lens unit, the second type of lens unit, and the third type of lens unit may all be different; or, the maximum thickness of two types of lens units among the first type of lens unit, the second type of lens unit, and the third type of lens unit may be the same, and different from the maximum thickness of the other type of lens unit.

[0186] This embodiment improves the difference in brightness attenuation of different colors of light emitted from different types of sub-pixels as the viewing angle changes by designing the maximum thickness of at least two types of lens units corresponding to at least two types of sub-pixels differently, thereby improving the resulting color shift in the display.

[0187] In some exemplary embodiments, a first type of pixel unit may include at least one first type of sub-pixel and at least one second type of sub-pixel. The first type of sub-pixel and the second type of sub-pixel may be configured to emit light of different colors. At least two types of lens units may include: a first type of lens unit corresponding to the first type of sub-pixel, and a second type of lens unit corresponding to the second type of sub-pixel. The maximum thickness of the first type of lens unit may be greater than the maximum thickness of the second type of lens unit. In some examples, the maximum length of the light-emitting region of a single first type of sub-pixel along a first direction may be greater than the maximum length along a second direction; the maximum length of the light-emitting region of a single second type of sub-pixel along the first direction may also be greater than the maximum length of the light-emitting region of a single second type of sub-pixel along the first direction; wherein the first direction intersects the second direction, and the plane containing the first and second directions is parallel to the plane containing the substrate. For example, the first direction may correspond to the V direction. In other examples, the first direction may correspond to the H direction. In this example, the different light emitted by the first type of sub-pixel and the second type of sub-pixel has different brightness decay rates as the viewing angle changes, and the brightness decay rate is related to the size of the light-emitting area of ​​the two types of sub-pixels. This example can improve the display color shift caused by the difference in brightness decay of the light emitted by the two types of sub-pixels as the viewing angle changes by designing the maximum thickness of the lens unit corresponding to the two types of sub-pixels differently.

[0188] The remaining descriptions of the display panel in this embodiment can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0189] Figure 20 is a schematic diagram of a display device according to at least one embodiment of the present disclosure. In some examples, as shown in Figure 20, the display device 91 includes a display panel 910. The display panel 910 can be an OLED display panel, a QLED display panel, or a liquid crystal display panel. The display device 91 can be any product or component with display and touch functions, such as an OLED display device, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigator. However, this embodiment is not limited to this.

[0190] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0191] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

A display panel, comprising: Base; The display structure layer is disposed on the substrate and includes a plurality of first-type pixel units, wherein the first-type pixel units include at least two types of sub-pixels that emit different colors of light. A lens layer is located on the side of the display structure layer away from the substrate, and includes at least two types of lens units corresponding to the at least two types of sub-pixels; the orthographic projection of at least one type of lens unit on the substrate and the orthographic projection of the light-emitting area of ​​the corresponding type of sub-pixel on the substrate at least partially overlap. The refractive index of at least one type of lens unit is different from that of other types of lens units. The display panel of claim 1, wherein, The first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel; the at least two types of lens units include: a first type of lens unit corresponding to the first type of sub-pixel and a second type of lens unit corresponding to the second type of sub-pixel; the refractive index of the first type of lens unit is greater than the refractive index of the second type of lens unit. The display panel according to claim 2, wherein, The maximum length of the light-emitting region of a single first-type sub-pixel along the first direction is greater than the maximum length along the second direction, and the maximum length of the light-emitting region of a single second-type sub-pixel along the first direction is greater than the maximum length along the second direction. The maximum length of the light-emitting region of a single first-type sub-pixel along the first direction is greater than the maximum length of the light-emitting region of a single second-type sub-pixel along the first direction; wherein the first direction intersects the second direction, and the plane containing the first direction and the second direction is parallel to the plane containing the substrate. The display panel according to claim 2, wherein, The first type of pixel unit includes: two first type sub-pixels and one second type sub-pixel, wherein the two first type sub-pixels include: a red sub-pixel and a green sub-pixel; and the second type sub-pixel includes: a blue sub-pixel. The display panel of claim 1, further comprising: A first filling layer is located on the side of the lens layer away from the substrate, and the first filling layer covers the surface of the lens layer away from the substrate; The refractive index of the first filling layer is less than that of the lens layer. The display panel of claim 1, further comprising: At least one light-shielding layer is located on the side of the lens layer near the display structure layer; The projection of the at least one light-shielding layer onto the substrate does not overlap or only partially overlaps with the projection of the light-emitting regions of the at least two types of sub-pixels onto the substrate. The display panel of claim 6, further comprising: An encapsulation structure layer is located on the side of the display structure layer away from the substrate; The at least one light-shielding layer includes: a first light-shielding layer located on the side of the encapsulation structure layer near the lens layer; the first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel; the first light-shielding layer has: a first type of opening corresponding to the first type of sub-pixel and a second type of opening corresponding to the second type of sub-pixel. Wherein, the orthographic projection of the first type of opening on the substrate and the orthographic projection of the light-emitting region of the first type of sub-pixel on the substrate at least partially overlap; the orthographic projection of the second type of opening on the substrate and the orthographic projection of the light-emitting region of the second type of sub-pixel on the substrate at least partially overlap; the maximum length of the overlapping area of ​​the first type of opening and the light-emitting region of the first type of sub-pixel along the first direction is greater than the maximum length of the overlapping area of ​​the second type of opening and the light-emitting region of the second type of sub-pixel along the first direction; The two types of lens units include: a first type of lens unit corresponding to the first type of pixel, and a second type of lens unit corresponding to the second type of sub-pixel; the refractive index of the first type of lens unit is greater than the refractive index of the second type of lens unit. The display panel according to claim 7, wherein The orthographic projection of the first type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel on the substrate, and the orthographic projection of the second type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the second type of sub-pixel on the substrate; The minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel is less than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. The display panel according to claim 7 or 8, wherein The display panel includes multiple light-shielding layers, which include: a first light-shielding layer, a second light-shielding layer, and a third light-shielding layer; the second light-shielding layer and the third light-shielding layer are located between the first light-shielding layer and the lens layer; The second light-shielding layer has a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer has a fourth type of opening corresponding to the second type of sub-pixel; the orthographic projection of the third type of opening on the substrate and the orthographic projection of the fourth type of opening on the substrate do not overlap; The orthographic projection of the third type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the first type of sub-pixel on the substrate; the orthographic projection of the fourth type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the second type of sub-pixel on the substrate. The display panel according to claim 9, wherein, The minimum distance between the third light-shielding layer and the lens layer is greater than or equal to the minimum distance between the second light-shielding layer and the lens layer. The display panel according to claim 9, wherein, The orthographic projection of the third type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel on the substrate, and the orthographic projection of the fourth type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the second type of pixel on the substrate. The minimum distance between the sidewall of the fourth type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel is greater than the minimum distance between the sidewall of the third type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel. The display panel according to claim 9, wherein, The minimum distance between the surface of the third light-shielding layer away from the substrate and the surface of the second light-shielding layer away from the substrate is greater than or equal to the minimum distance between the surface of the third light-shielding layer near the substrate and the surface of the first light-shielding layer away from the substrate. The display panel according to claim 9 further includes: A touch structure layer is located between the first light-shielding layer and the lens layer; The touch structure layer includes at least one touch conductive layer; The at least one touch conductive layer is reused as the second light-shielding layer and the third light-shielding layer, or is reused as the second light-shielding layer; The second filling layer is located between the touch structure layer and the lens layer; The third filling layer is located between the touch structure layer and the first light-shielding layer; The thickness of the third filler layer is greater than the thickness of the second filler layer. The display panel of claim 1, wherein, The maximum thickness of the at least one type of lens unit is 0. The display panel of claim 1, wherein, The display structure layer further includes: a plurality of second-type pixel units, the second-type pixel units including a plurality of privacy sub-pixels, the privacy sub-pixels including a plurality of micropixels, the plurality of micropixels of the privacy sub-pixels being configured to emit light of the same color; The lens layer further includes: a plurality of microlens units corresponding to the plurality of micropixels, wherein the orthographic projection of the microlens unit on the substrate at least partially overlaps with the orthographic projection of the corresponding at least one micropixel on the substrate; the refractive index of the plurality of microlens units is the same as the refractive index of the at least one type of lens unit. A display panel, comprising: Base; The display structure layer is disposed on the substrate and includes a plurality of first-type pixel units, wherein the first-type pixel units include at least two types of sub-pixels that emit different colors of light. A lens layer is located on the side of the display structure layer away from the substrate, and includes at least two types of lens units corresponding to the at least two types of sub-pixels; the orthographic projection of at least one type of lens unit on the substrate and the orthographic projection of the light-emitting area of ​​the corresponding type of sub-pixel on the substrate at least partially overlap; wherein the maximum thickness of the at least one type of lens unit is different from the maximum thickness of the other types of lens units. The display panel of claim 16, wherein, The first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel; The at least two types of lens units include: a first type of lens unit corresponding to the first type of sub-pixel, and a second type of lens unit corresponding to the second type of sub-pixel; the maximum thickness of the first type of lens unit is greater than the maximum thickness of the second type of lens unit. The display panel of claim 16, further comprising: At least one light-shielding layer is located on the side of the lens layer near the display structure layer; The projection of the at least one light-shielding layer onto the substrate does not overlap or only partially overlaps with the projection of the light-emitting regions of the at least two types of sub-pixels onto the substrate. The display panel of claim 18, further comprising: An encapsulation structure layer is located on the side of the display structure layer away from the substrate; The at least one light-shielding layer includes: a first light-shielding layer, the first light-shielding layer being located on the side of the encapsulation structure layer near the lens layer; the first type of pixel unit includes: at least one first type of sub-pixel and at least one second type of sub-pixel; The first light-shielding layer has: a first type of opening corresponding to the first type of sub-pixel, and a second type of opening corresponding to the second type of sub-pixel; wherein, the orthographic projection of the first type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the first type of sub-pixel on the substrate; the orthographic projection of the second type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the second type of sub-pixel on the substrate; the maximum length of the overlapping area of ​​the first type of opening and the light-emitting region of the first type of sub-pixel along the first direction is greater than the maximum length of the overlapping area of ​​the second type of opening and the light-emitting region of the second type of sub-pixel along the first direction; The two types of lens units include: a first type of lens unit corresponding to the first type of pixel and a second type of lens unit corresponding to the second type of sub-pixel; the maximum thickness of the first type of lens unit is greater than the maximum thickness of the second type of lens unit. The display panel of claim 19, wherein, The orthographic projection of the first type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the first type of sub-pixel on the substrate, and the orthographic projection of the second type of opening on the substrate covers the orthographic projection of the light-emitting area of ​​the second type of sub-pixel on the substrate; The minimum distance between the sidewall of the first type of opening and the edge of the light-emitting area of ​​the first type of sub-pixel is less than the minimum distance between the sidewall of the second type of opening and the edge of the light-emitting area of ​​the second type of sub-pixel. The display panel according to claim 19 or 20, wherein The display panel includes multiple light-shielding layers, which include: a first light-shielding layer, a second light-shielding layer, and a third light-shielding layer; the second light-shielding layer and the third light-shielding layer are located between the first light-shielding layer and the lens layer; The second light-shielding layer has a third type of opening corresponding to the first type of sub-pixel, and the third light-shielding layer has a fourth type of opening corresponding to the second type of sub-pixel; the orthographic projection of the third type of opening on the substrate and the orthographic projection of the fourth type of opening on the substrate do not overlap; The orthographic projection of the third type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the first type of sub-pixel on the substrate; the orthographic projection of the fourth type of opening on the substrate at least partially overlaps with the orthographic projection of the light-emitting region of the second type of sub-pixel on the substrate. The display panel of claim 21, wherein, The minimum distance between the third light-shielding layer and the lens layer is greater than or equal to the minimum distance between the second light-shielding layer and the lens layer. The display panel of claim 16, wherein, The maximum thickness of the at least one type of lens unit is 0. A display device comprising a display panel as claimed in any one of claims 1 to 14, or comprising a display panel as claimed in any one of claims 16 to 23.

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