Display panel and display device

Abstract

The application provides a display panel and a display device, and relates to the display field, and is used for preventing peep display performance. The display panel comprises a display area and a non-display area surrounding the display area, a substrate, a display layer located on one side of the substrate and comprising a pixel area and a non-pixel area, wherein the pixel area comprises a sub-pixel, an encapsulation layer located on the side, away from the substrate, of the display layer, a filter layer located on the side, away from the substrate, of the encapsulation layer and comprising a filter part and a light shielding part, wherein the filter part overlaps the pixel area in the direction perpendicular to the plane where the substrate is located, and the light shielding part overlaps the non-pixel area, at least one blocking layer located on the side, away from the substrate, of the filter layer, wherein the blocking layer has an opening, the opening overlaps the pixel area in the direction perpendicular to the plane where the substrate is located, and the blocking layer overlaps the non-pixel area, and a first planar layer located between the display layer and the blocking layer and covering the display area.

Description

Technical Field

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

[0002] Privacy-protecting displays are widely used in various application scenarios such as mobile phones, computers, and in-vehicle displays due to their privacy protection functions. They effectively meet users' display security needs in public environments and prevent information leakage.

[0003] However, the current privacy display structure still needs further optimization to meet higher usage requirements. Summary of the Invention

[0004] This invention provides a display panel and display device for privacy display performance.

[0005] In a first aspect, embodiments of the present invention provide a display panel, comprising: A display area and a non-display area that at least partially surrounds the display area; substrate; The display layer, located on one side of the substrate, includes a pixel area and a non-pixel area, wherein the pixel area includes sub-pixels; An encapsulation layer is located on the side of the display layer away from the substrate; A filter layer, located on the side of the encapsulation layer away from the substrate, includes a filter portion and a light-shielding portion. In a direction perpendicular to the plane of the substrate, the filter portion overlaps with the pixel area, and the light-shielding portion overlaps with the non-pixel area. At least one blocking layer is located on the side of the filter layer away from the substrate. The blocking layer has an opening that overlaps with the pixel area in a direction perpendicular to the plane of the substrate, and the blocking layer overlaps with the non-pixel area. A first flat layer is located between the display layer and the blocking layer and covers the display area.

[0006] Secondly, based on the same inventive concept, embodiments of the present invention also provide a display device, including the aforementioned display panel.

[0007] The technical solution provided by the embodiments of the present invention has the following beneficial effects: In this embodiment of the invention, a blocking layer is provided on the side of the filter layer away from the substrate. The blocking layer is used to block large-angle light emitted by the sub-pixels, allowing only smaller-angle light to escape, thereby achieving privacy protection. Furthermore, this embodiment of the invention also provides a first planarization layer between the display layer and the blocking layer. After adding the first planarization layer, the optical distance between the blocking layer and the display layer increases, and the blocking layer can block light within a wider angle range, thereby enabling the display panel to achieve a smaller privacy angle and optimizing its privacy display function.

[0008] Moreover, in this technical solution, the first flattening layer and the blocking layer work together, and the control of the privacy angle can be adjusted based on the overall thickness of the first flattening layer and the blocking layer. This can also reduce the design requirements of the blocking layer. For example, under the condition of achieving the same privacy angle, the number of blocking layers can be reduced. For example, privacy at a smaller angle can be achieved with only one or two blocking layers. Reducing the number of blocking layers can reduce the risk of instability in privacy performance caused by positional offset between different blocking layers. Alternatively, the thickness requirement of the blocking layer can be reduced, and privacy at a smaller angle can be achieved without the blocking layer being too thick, thereby avoiding adverse problems such as bottom residue and unstable patterns caused by excessively thick blocking layers. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A top view of a display panel provided in an embodiment of the present invention; Figure 2 for Figure 1 A sectional view along the A1-A2 direction; Figure 3 for Figure 1 A sectional view along the B1-B2 direction; Figure 4 for Figure 2 Partial structural diagram; Figure 5 for Figure 1 Another sectional view along the A1-A2 direction; Figure 6 for Figure 1 Another sectional view along the B1-B2 direction; Figure 7 for Figure 5 Partial structural diagram; Figure 8 A schematic diagram illustrating light emission comparison provided in an embodiment of the present invention; Figure 9 for Figure 1 Another sectional view along the A1-A2 direction; Figure 10 for Figure 1 Another sectional view along the A1-A2 direction; Figure 11 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 12 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 13 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 14 Another top view of the display panel provided in an embodiment of the present invention; Figure 15 for Figure 1 Another sectional view along the A1-A2 direction; Figure 16 for Figure 1 Another sectional view along the B1-B2 direction; Figure 17 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 18 This is a schematic diagram illustrating the thickness variation of an organic encapsulation layer according to an embodiment of the present invention; Figure 19 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 20 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 21 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 22 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 23 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 24 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 25 Another top view of the display panel provided in an embodiment of the present invention; Figure 26 for Figure 25 A sectional view along the C1-C2 direction; Figure 27 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 28 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 29 for Figure 28 A sectional view along the D1-D2 direction; Figure 30 for Figure 28 A sectional view along the E1-E2 direction; Figure 31 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 32 Another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 33 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0011] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0012] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0013] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0014] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0015] This invention provides a display panel, which can be an organic light-emitting diode (OLED) display panel.

[0016] Figure 1 This is a top view of a display panel provided in an embodiment of the present invention. The display panel includes a display area AA and a non-display area NAA that at least partially surrounds the display area AA.

[0017] Figure 2 for Figure 1A sectional view along the A1-A2 direction. Figure 3 for Figure 1 A sectional view along the B1-B2 direction. Figure 4 for Figure 2 A partial structural diagram. Figure 5 for Figure 1 Another sectional view along the A1-A2 direction, Figure 6 for Figure 1 Another sectional view along the B1-B2 direction, Figure 7 for Figure 5 Partial structural diagram, such as Figures 1-7 As shown, the display panel also includes a substrate 1, a display layer 2 located on one side of the substrate 1, an encapsulation layer 3 located on the side of the display layer 2 away from the substrate 1, and a filter layer 4 located on the side of the encapsulation layer 3 away from the substrate 1.

[0018] The substrate 1 includes a substrate 5 and a circuit layer 6 located on one side of the substrate 5. The circuit layer 6 includes pixel circuits 7.

[0019] Display layer 2 includes pixel areas 8 and non-pixel areas 9, wherein pixel area 8 includes sub-pixels 10. In a more specific structure, see [link to more detailed description]. Figure 4 and Figure 7 The display layer 2 includes an anode 50, a pixel definition layer 51, a light-emitting layer 52, and a cathode 53. The pixel definition layer 51 has a pixel opening 54, the light-emitting layer 52 is located in the pixel opening 54, and the pixel area 8 is defined by the pixel opening 54.

[0020] The filter layer 4 is used to replace the polarizer to reduce reflection, thereby overcoming the problem of increased module thickness caused by the polarizer. The filter layer 4 includes a filter part 11 and a light-shielding part 12. In the direction perpendicular to the plane of the substrate 1, the filter part 11 overlaps with the pixel area 8, and the light-shielding part 12 overlaps with the non-pixel area 9.

[0021] In one embodiment, see Figure 4 The filter layer 4 includes a first region 55 and a second region 56. In a direction perpendicular to the plane of the substrate 1, the first region 55 overlaps with the pixel region 8, and the second region 56 overlaps with the non-pixel region 9. The filter layer 4 includes color resists 16 of multiple colors. In the second region 56, these color resists 16 of multiple colors are stacked to form a light-shielding portion 12. The first region 55 includes only one color of color resist 16. The color of the color resist 16 in the first region 55 is the same as the light-emitting color of the corresponding pixel region 8. This portion of the color resist 16 in the first region 55 constitutes the filter portion 11.

[0022] For example, see [link to example]. Figure 4Pixel region 8 includes a red pixel region 8-R, a green pixel region 8-G, and a blue pixel region 8-B. Correspondingly, the red pixel region 8 includes a red sub-pixel 10-R, the green pixel region 8 includes a green sub-pixel 10-G, and the blue pixel region 8 includes a blue sub-pixel 10-B. The filter layer 4 includes a red color resist 16-R, a green color resist 16-G, and a blue color resist 16-B. Specifically, at positions corresponding to non-pixel regions 9, the filter layer 4 includes stacked red color resist 16-R, green color resist 16-G, and blue color resist 16-B. At positions corresponding to the red pixel region 8-R, the filter layer 4 includes only red color resist 16-R; at positions corresponding to the green pixel region 8-G, the filter layer 4 includes only green color resist 16-G; and at positions corresponding to the blue pixel region 8-B, the filter layer 4 includes only blue color resist 16-B.

[0023] In another embodiment, see Figure 7 The filter layer 4 includes a first region 55 and a second region 56. In a direction perpendicular to the plane of the substrate 1, the first region 55 overlaps with the pixel region 8, and the second region 56 overlaps with the non-pixel region 9. The filter layer 4 includes a black matrix 17 and color resists of various colors 16. The black matrix 17 is located in the second region 56 and serves as a light-shielding part 12. The black matrix 17 has a cutout at the corresponding position in the first region 55, and at least a portion of the color resists 16 is located within the cutout. The color of the color resists 16 in the first region 55 is the same as the light-emitting color of its corresponding pixel region 8. This portion of the color resists 16 in the first region 55 serves as a filter part 11.

[0024] For example, see [link to example]. Figure 7 The filter layer 4 includes a black matrix 17, a red color resist 16-R, a green color resist 16-G, and a blue color resist 16-B. The filter layer 4 includes the black matrix 17 at positions corresponding to non-pixel areas 9, the red color resist 16-R at positions corresponding to the red pixel area 8-R, the green color resist 16-G at positions corresponding to the green pixel area 8-G, and the blue color resist 16-B at positions corresponding to the blue pixel area 8-B.

[0025] In this embodiment of the invention, the thicknesses of the color resists 16 of different colors can be the same or different. Furthermore, the formation order of the multiple color resists 16 is not limited; for example, in… Figure 4 In the structure shown, the stacking order of the various color resists 16 in the second region 56 is not limited.

[0026] In one embodiment, to match the current resolution design, that is, to match the spacing design between the current adjacent pixel areas 8, the width of the portion of the filter 12 between adjacent pixel areas 8 can be greater than or equal to 3 μm and less than or equal to 30 μm.

[0027] See Figure 2 , Figure 3 , Figure 5 and Figure 6 The display panel further includes at least one barrier layer 13, which is located on the side of the light filter layer 4 away from the substrate 1. The barrier layer 13 includes a light-shielding material and overlaps with the non-pixel area 9 in a direction perpendicular to the plane of the substrate 1. The barrier layer 13 has an opening 14, which overlaps with the pixel area 8 in a direction perpendicular to the plane of the substrate 1. Light emitted from the sub-pixel 10 is emitted through the light filter portion 11 of the light filter layer 4 and then further emitted through the opening in the barrier layer 13.

[0028] The display panel also includes a first planarization layer 15, which is located between the display layer 2 and the barrier layer 13 and covers the display area AA. The first planarization layer 15 can be an organic layer.

[0029] In this embodiment of the invention, a blocking layer 13 is provided on the side of the filter layer 4 away from the substrate 1. The blocking layer 13 is used to block the large-angle light emitted by the sub-pixel 10, allowing only the smaller-angle light to escape, thereby achieving privacy protection. Furthermore, this embodiment of the invention also provides a first planarization layer 15 between the display layer 2 and the blocking layer 13. Figure 8 This is a schematic diagram illustrating the light emission comparison in an embodiment of the present invention. Figure 8 In the diagram, A represents the light output without a first planarization layer. Figure 5 B and C in the diagram represent the light output after the first flattening layer 15 is set. As can be seen from the comparison, after the first flattening layer 15 is set, the optical distance between the blocking layer 13 and the display layer 2 increases. The blocking layer 13 can block light in a wider angle range, thereby enabling the display panel to achieve a smaller privacy angle and optimizing the privacy function.

[0030] Furthermore, in this technical solution, the first flattening layer 15 and the blocking layer 13 work together, and the control of the privacy angle can be adjusted based on the overall thickness control of the first flattening layer 15 and the blocking layer 13. This also reduces the design requirements for the blocking layer 13. For example, under the condition of achieving the same privacy angle, the requirement for the number of blocking layers 13 can be reduced. For example, privacy at a smaller angle can be achieved with only one or two blocking layers 13. Reducing the number of blocking layers 13 can reduce the risk of unstable privacy performance caused by positional offset between different blocking layers 13. Alternatively, the thickness requirement for the blocking layer 13 can also be reduced. Privacy at a smaller angle can be achieved without the blocking layer 13 being too thick, thereby avoiding adverse problems such as bottom residue and unstable patterns caused by the blocking layer 13 being too thick.

[0031] In one feasible implementation, the number of barrier layers 13 is less than or equal to 2.

[0032] In one embodiment, see Figure 2 and Figure 5 When the number of blocking layers 13 is 1, the display panel relies on a single blocking layer 13 to achieve privacy protection, which avoids the problem of privacy angle deviation caused by positional offset between different blocking layers 13.

[0033] In another embodiment, Figure 9 for Figure 1 Another sectional view along the A1-A2 direction, Figure 10 for Figure 1 Another sectional view along the A1-A2 direction, such as Figure 9 and Figure 10 As shown, the display panel includes two barrier layers 13, which are spaced apart in a direction perpendicular to the plane of the substrate 1. Compared to multiple barrier layers 13, the dual barrier layer design can also reduce the risk of unstable privacy protection performance caused by the misalignment of the barrier layers 13. Moreover, the dual barrier layer design allows the two barrier layers 13 to share the thickness requirements, reducing the demand on the processing capabilities of the barrier layers 13, and the pattern of the barrier layers 13 will be more stable.

[0034] Furthermore, the two blocking layers 13 include a first blocking layer 13-1 and a second blocking layer 13-2, with the second blocking layer 13-2 located on the side of the first blocking layer 13-1 away from the substrate 1. The area of ​​the opening 14 in the second blocking layer 13-2 is smaller than the area of ​​the opening 14 overlapping it in the first blocking layer 13-1, thereby further narrowing the light emission angle range using the second blocking layer 13-2.

[0035] In one feasible implementation, see again Figure 2 The thickness d of the barrier layer 13 is greater than or equal to 1 μm and less than or equal to 3 μm.

[0036] As mentioned above, in this embodiment of the invention, the first planarization layer 15 and the barrier layer 13 work together to adjust the privacy angle based on the overall thickness of the first planarization layer 15 and the barrier layer 13, thus reducing the thickness requirement of the barrier layer 13. With the addition of the first planarization layer 15, a smaller privacy angle can be achieved when the film thickness of the barrier layer 13 is in the range of 1μm-3μm. Within this thickness range, the film-forming characteristics of the barrier layer 13 are more stable, resulting in more precise control of the privacy angle.

[0037] In one feasible implementation, to match the current resolution design, that is, to match the spacing design between the current adjacent pixel areas 8, the width of this portion of the blocking layer 13 between adjacent pixel areas 8 is greater than or equal to 3 μm and less than or equal to 30 μm.

[0038] In one feasible implementation, see again Figure 2 , Figure 3 , Figure 5 and Figure 6 The first planarization layer 15 includes a first sub-planarization layer 18, which is located between the filter layer 4 and the blocking layer 13.

[0039] Light emitted from sub-pixel 10 passes through the filter section 11 of the light-filtering layer 4 and then exits through the opening 14 of the blocking layer 13. A first sub-planarization layer 18 is provided between the light-filtering layer 4 and the blocking layer 13. The thickness design of the first sub-planarization layer 18 can directly control the angle range of light that can be emitted through the opening 14 after passing through the filter section 11, thereby allowing for better control of the privacy angle. Moreover, the first sub-planarization layer 18 can also flatten the film undulations of the light-filtering layer 4, making the film of the upper blocking layer 13 more flat.

[0040] In one feasible implementation, see again Figure 2 In the display area AA, the minimum film thickness of the first sub-planarization layer 18 is d1, where 2μm≤d1≤30μm. At this thickness, there is sufficient optical distance between the blocking layer 13 and the filter layer 4, allowing for a smaller privacy angle design. Moreover, the maximum design thickness of d1 is 30μm, which achieves the required privacy angle while avoiding the first sub-planarization layer 18 being too thick and affecting the module thickness.

[0041] Furthermore, with a thickness of 2μm≤d1≤15μm, this thickness design allows the display panel to achieve a privacy angle of less than or equal to 45°, which can meet privacy requirements in display fields such as mobile phones and automotive displays.

[0042] Alternatively, 12μm≤d1≤30μm, this thickness design allows the display panel to achieve a privacy angle of less than or equal to 30°, which is suitable for devices and scenarios with higher security requirements.

[0043] In one feasible implementation, see again Figure 2 In the display area AA, the minimum film thickness of the first sub-planarization layer 18 is d1, and the minimum film thickness of the barrier layer 13 is d. .

[0044] When d1 and d satisfy the above ratio range, a smaller anti-spy angle design can be achieved based on the combined effect of the first sub-flattening layer 18 and the blocking layer 13.

[0045] in, This means that the thickness of the first sub-planarization layer 18 is at least twice the thickness of the barrier layer 13: when the thickness of the barrier layer 13 is constant, it can be ensured that the first sub-planarization layer 18 is not too thin, and the first sub-planarization layer 18 has sufficient thickness to provide stable support for the barrier layer 13, thereby forming a sufficient optical distance between the barrier layer 13 and the filter layer 4; when the thickness of the first sub-planarization layer 18 is constant, it can avoid problems such as pattern instability caused by process capability due to the barrier layer 13 being too thick.

[0046] further, This means that the thickness of the first sub-planarization layer 18 is at most 20 times the thickness of the barrier layer 13. When the thickness of the barrier layer 13 is fixed, the thickness of the first sub-planarization layer 18 can be avoided from being too thick and affecting the thickness of the module. When the thickness of the first sub-planarization layer 18 is fixed, the thickness of the barrier layer 13 can be avoided from being too thin, so that the barrier layer 13 can fully play its role in blocking large-angle light.

[0047] further, This aspect ratio design allows the display panel to achieve a privacy viewing angle of approximately 45° or less, meeting privacy requirements in applications such as mobile phones and automotive displays. In one example, 1μm≤d≤3μm, 6μm≤d1≤10μm.

[0048] or, This aspect ratio design allows the display panel to achieve a privacy viewing angle of less than or equal to 30°, making it suitable for devices and scenarios with higher security requirements. In one example, 1μm≤d≤3μm, 12μm≤d1≤20μm.

[0049] In one feasible implementation, see again Figure 3 In the display area AA, the minimum film thickness of the first sub-planarization layer 18 is d1. In the non-display area NA, including the barrier 30, the minimum film thickness of the first sub-planarization layer 18 is d1' in the region between the barrier 30 and the edge of the display panel. .

[0050] The encapsulation layer 3 includes a first inorganic encapsulation layer 27, an organic encapsulation layer 28, and a second inorganic encapsulation layer 29 stacked along a direction perpendicular to the plane of the substrate 1. The organic encapsulation layer 28 is relatively thick and is typically formed by inkjet printing. The barrier 30 is used to define the area where the organic encapsulation material is applied, that is, to define the coverage area of ​​the organic encapsulation layer 28. When the non-display area (NAA) includes multiple layers of barrier 30, the area between the barrier 30 and the edge of the display panel can refer to the outermost layer of the area between the barrier 30 and the edge of the display panel.

[0051] As mentioned above, the coverage area of ​​the organic encapsulation layer 28 is located inside the barrier 30. Therefore, the organic encapsulation layer 28 will form a large step at the barrier 30.

[0052] The conventional cover layer above the filter layer 4 is relatively thin and only serves as a separator. When it extends into the non-display area (NAA), significant film undulations occur due to the step difference. Unlike this conventional cover layer, the first sub-planarization layer 18 in this embodiment of the invention is used to control the privacy angle and has a larger thickness. In the manufacturing process of the first sub-planarization layer 18, the coated or sprayed material is thicker, and the material fills the step difference area within the NAA, so that the thickness ratio of the first sub-planarization layer 18 in the NAA and the display area (AA) can reach 1.2-6. In this way, the first sub-planarization layer 18 can also be used to improve the film smoothness within the NAA.

[0053] In the display area AA and the non-display area NAA, the distance between the surface of the first sub-planarization layer 18 away from the substrate 1 and the substrate 1 can be equal. That is, the surface of the first sub-planarization layer 18 away from the substrate 1 can be a flat surface in the display area AA and the non-display area NAA.

[0054] In one feasible implementation, see again Figure 2 , Figure 3 , Figure 5 and Figure 6 The first sub-planar layer 18 is a single-layer membrane structure.

[0055] The first sub-planarization layer 18 of this monolayer serves both to adjust the privacy angle and as a cover layer. The first sub-planarization layer 18 is a monolayer film, which is simple to prepare and has a more stable film structure.

[0056] In this structure, the first sub-planarization layer 18 can be formed using inkjet printing or 3D printing, both of which can create a structurally stable single-layer film structure with a relatively large thickness. In one example, the first sub-planarization layer 18 is formed using inkjet printing and may include materials such as acrylic resin or cycloolefin resin; or, in another example, the first sub-planarization layer 18 is formed using 3D printing and may include materials such as transparent resin, transparent PLA, transparent PETG, transparent ABS, or transparent nylon.

[0057] In one feasible implementation, Figure 11 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 12 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 11 and Figure 12 As shown, the first sub-planarization layer 18 includes at least two first layers 60 stacked along a direction perpendicular to the plane of the substrate 1.

[0058] With this configuration, the first sub-planarization layer 18 can achieve a greater thickness by stacking at least two film layers. The thickness design of the first sub-planarization layer 18 is more flexible, and correspondingly, the adjustment design of the privacy angle is also more flexible. In other words, by using the total thickness of at least two stacked first layers 60 to meet the thickness requirements of the first sub-planarization layer 18 for the privacy angle, the thickness requirement of a single first layer 60 can be reduced, thereby reducing the requirements on the processing capabilities of the first layer 60.

[0059] Further, see again Figure 11 At least two first layers 60 include a first sublayer 61 and a second sublayer 62, with the second sublayer 62 located on the side of the first sublayer 61 away from the substrate 1. Specifically, at least in the display area AA, the film thickness of the second sublayer 62 is greater than the film thickness of the first sublayer 61.

[0060] In the above structure, while the first sublayer 61 and the second sublayer 62 share the thickness requirements, the second sublayer 62 is relatively thicker and is mainly used to control the privacy angle. The first sublayer 61 is relatively thin and can be reused as a spacer layer. When it extends into the non-display area NAA, more obvious film undulations will occur at the difference position formed by the organic encapsulation layer 28. In one embodiment, in the display area AA, the minimum film thickness of the first sublayer 61 is about 1.5 μm, and in the area between the barrier 30 and the edge of the display panel, the minimum film thickness of the first sublayer 61 is in the range of 2 μm-4 μm. The minimum film thickness of the first sublayer 61 in the area between the barrier 30 and the edge of the display panel is at most three times the minimum film thickness of the first sublayer 61 in the display area AA.

[0061] Or, see again Figure 12 At least two first layers 60 include a first sublayer 61 and a second sublayer 62, with the second sublayer 62 located on the side of the first sublayer 61 away from the substrate 1. Specifically, at least in the display area AA, the film thickness of the first sublayer 61 is greater than the film thickness of the second sublayer 62.

[0062] In the above structure, while the first sub-layer 61 and the second sub-layer 62 share the thickness requirement, the first sub-layer 61 is relatively thicker and is mainly used to control the privacy angle. The second sub-layer 62 is relatively thinner and is used to further optimize the flatness of the film layer, making the first sub-flattening layer 18 flatter within the display area AA, thus achieving uniformity of the privacy angle at different locations.

[0063] In one feasible implementation, Figure 13 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 13As shown, a first protective layer 19 is also included between the first sub-planarization layer 18 and the barrier layer 13. The first protective layer 19 is an inorganic layer, such as materials including SiON, SiO, SiN, etc.

[0064] The first protective layer 19 has a dense structure, which can block the intrusion of water, oxygen, impurity ions, etc., and prevent solvent seepage during the manufacturing process of the barrier layer 13, thereby avoiding the solvent from reacting with the color resist in the filter layer 4 below and improving the panel yield.

[0065] In one feasible implementation, see again Figure 13 In the display area AA, the minimum film thickness of the first sub-planarization layer 18 is d1, and the minimum film thickness of the first protective layer 19 is d2. .

[0066] Within the aforementioned ratio range, the first sub-planarization layer 18 can have sufficient thickness to provide stable support for the barrier layer 13, thereby forming a sufficient optical distance between the barrier layer 13 and the filter layer 4 to achieve a smaller privacy angle. At the same time, the film thickness of the first sub-planarization layer 18 can be limited within a reasonable range to achieve the required privacy angle while avoiding the first sub-planarization layer 18 being too thick and having a significant impact on the panel thickness.

[0067] In one example, 50nm≤d2≤500nm, 2μm≤d1≤10μm.

[0068] In one feasible implementation, Figure 14 Another top view of the display panel provided in an embodiment of the present invention, such as... Figure 14 As shown, the orthographic projection of the first sub-planarization layer 18 onto the plane of the substrate 1 covers the orthographic projection of the first protective layer 19 onto the plane of the substrate 1.

[0069] When the coverage area of ​​the first sub-planarization layer 18 is larger than that of the first protective layer 19, the first protective layer 19 is recessed compared to the first planarization layer 15. This can alleviate stress concentration at the edge of the inorganic layer, reduce the risk of film cracking and peeling, and enable it to better perform its protective function. Moreover, the larger coverage area of ​​the first sub-planarization layer 18 results in better film flatness at the edge of the panel.

[0070] In one feasible implementation, see again Figure 2 The first sub-planarization layer 18 is in contact with the filter layer 4 on the side closer to the substrate 1, and the first sub-planarization layer 18 is in contact with the barrier layer 13 on the side farther away from the substrate 1.

[0071] In the above configuration, the filter layer 4 and the blocking layer 13 are separated only by a first sub-planarization layer 18. On the one hand, this can reduce the impact of the interface on light transmission. On the other hand, the thickness design of the first sub-planarization layer 18 directly determines the optical distance between the blocking layer 13 and the filter layer 4. Based on the thickness control of the first sub-planarization layer 18, the control of the privacy angle can be adjusted more precisely. Furthermore, the number of film layers between the filter layer 4 and the blocking layer 13 is small, which can also reduce the process flow and the number of photomasks, thus saving costs.

[0072] In the above structure, the barrier layer 13 can be formed using a material with poor compatibility with the first sub-planarization layer 18. This prevents solvent penetration of the barrier layer 13 into the first sub-planarization layer 18 at the material level during the fabrication of the barrier layer 13, thus avoiding any impact on the underlying first sub-planarization layer 18 and the filter layer 4. In one example, the first sub-planarization layer 18 comprises an alkyl-based acrylic resin material, and the barrier layer 13 comprises an aromatic acrylic resin material, for example, an acrylic resin material containing a fluorene ring.

[0073] Alternatively, the interaction between the barrier layer 13 and the first sub-planarization layer 18 can be reduced through process selection. For example, in the fabrication of the first sub-planarization layer 18, a 2.38% concentration of TMAH (tetrabutyl ammonium hydroxide) developer can be used, while in the fabrication of the barrier layer 13, a 0.04% KOH (potassium hydroxide) developer can be used. This process selection can protect the barrier layer 13 from the influence of the TMAH developer, thereby improving the stability of the film structure of the barrier layer 13.

[0074] In one feasible implementation, Figure 15 for Figure 1 Another sectional view along the A1-A2 direction. Figure 16 for Figure 1 Another sectional view along the B1-B2 direction, such as Figure 15 and Figure 16 As shown, the first planarization layer 15 includes a second sub-planarization layer 26, which is located between the filter layer 4 and the encapsulation layer 3.

[0075] A second sub-planarization layer 26 is provided between the filter layer 4 and the encapsulation layer 3. Based on the thickness control of the second sub-planarization layer 26, the optical distance between the blocking layer 13 and the display layer 2 can also be adjusted, thereby achieving control of the privacy angle.

[0076] Furthermore, the second sub-flattening layer 26 can further improve the box mura problem: The encapsulation layer 3 includes a first inorganic encapsulation layer 27, an organic encapsulation layer 28, and a second inorganic encapsulation layer 29 stacked along a direction perpendicular to the plane of the substrate 1. The thicknesses of the first inorganic encapsulation layer 27 and the second inorganic encapsulation layer 29 are approximately 0.5 μm to 2 μm, while the thickness of the organic encapsulation layer 28 is approximately 8 μm to 14 μm. The organic encapsulation layer 28 is typically formed using an inkjet printing process.

[0077] Figure 17 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 17 As shown, the inventors discovered that during the fabrication process of the organic encapsulation layer 28, due to factors such as the coffee ring effect and surface tension, the formed organic encapsulation layer 28 will experience a significant increase in thickness in a region 3mm-10mm from the edge of the display panel. This region overlaps with the display area AA, resulting in localized thickening of the organic encapsulation layer 28 in the edge display area. For example, the film thickness of the organic encapsulation layer 28 in the edge display area will be 1μm-3μm greater than the film thickness of the organic encapsulation layer 28 in the middle display area.

[0078] Figure 18 This is a schematic diagram illustrating the thickness variation of an organic encapsulation layer according to an embodiment of the present invention, wherein... Figure 18 The horizontal axis corresponds to the position of the display panel, and the vertical axis represents the thickness of the organic encapsulation layer. Figure 18 It can be seen that the organic encapsulation layer 28 exhibits a significant thickness change in the region near the edge of the display panel.

[0079] See also Figure 17 When the thickness of the organic encapsulation layer 28 increases in the edge display area, the light filter layer 4 above it becomes thinner, which in turn affects the light emission consistency between the edge display area and the middle display area, resulting in a frame mura phenomenon in the display panel. This frame mura phenomenon is more obvious in low and medium grayscale displays.

[0080] In this embodiment of the invention, after a second sub-planarization layer 26 is provided between the encapsulation layer 3 and the filter layer 4, see [link to previous section]. Figure 16 The second sub-planarization layer 26 can flatten the thickness undulation of the organic encapsulation layer 28, reduce the influence of the thickness variation of the organic encapsulation layer 28 on the thickness of the filter layer 4, improve the thickness uniformity of the filter layer 4 in the edge display area and the middle display area, and thus effectively improve the frame mura problem.

[0081] Specifically, the uniformity of the thickness of the filter layer 4 in the edge display area and the middle display area can include: the uniformity of the thickness of the filter portion 11 of the same color in the edge display area and the middle display area, and the uniformity of the thickness of the light-blocking portion 12 in the edge display area and the middle display area.

[0082] In one feasible implementation, see again Figure 16 In the display area AA, the minimum film thickness of the second sub-planar layer 26 is d3, where 2μm≤d3≤15μm.

[0083] When d3 is in the range of 2μm-15μm, on the one hand, the thickness design of the second sub-planarization layer 26 can play a significant role in adjusting and controlling the optical distance between the blocking layer 13 and the display layer 2, thereby achieving effective adjustment and control of the privacy angle. On the other hand, the second sub-planarization layer 26 can also better fill the thickness fluctuations of the organic encapsulation layer 28, making the thickness uniformity of the filter layer 4 better in the edge display area and the middle display area.

[0084] In one feasible implementation, see again Figure 16 In the display area AA, the minimum film thickness within the second sub-planarization layer 26 is d3. The non-display area includes the barrier 30. In the region between the barrier 30 and the edge of the display panel, the minimum film thickness of the second sub-planarization layer 26 is d3'. .

[0085] As mentioned above, the coverage area of ​​the organic encapsulation layer 28 is located inside the barrier 30. Therefore, the organic encapsulation layer 28 will form a large step difference in the barrier 30.

[0086] The conventional cover layer between the encapsulation layer 3 and the filter layer 4 is relatively thin and only serves as a separator. When it extends into the non-display area (NAA), significant film undulations occur at the step difference location. Unlike this conventional cover layer, the second sub-planarization layer 26 in this embodiment is used to control the privacy angle and achieve planarization to improve frame mura. The second sub-planarization layer 26 has a larger thickness. During the manufacturing process of the second sub-planarization layer 26, when its material is coated or sprayed, the material fills the step difference area within the NAA, making the thickness ratio of the second sub-planarization layer 26 in the NAA and the display area (AA) within the range of 2-5. In this way, the second sub-planarization layer 26 can also improve the film smoothness within the NAA.

[0087] In the display area AA and the non-display area NAA, the distance between the surface of the second sub-planarization layer 26 away from the substrate 1 and the substrate 1 can be equal. That is, the surface of the second sub-planarization layer 26 away from the substrate 1 can be a flat surface in the display area AA and the non-display area NAA.

[0088] In one embodiment, 4μm≤d3'≤32μm.

[0089] In one feasible implementation, see again Figure 15 and Figure 16 The second sub-planar layer 26 is a single-layer membrane structure.

[0090] The second sub-planarization layer 26 serves both to adjust the privacy angle and as a cover layer. The second sub-planarization layer 26 is a single-layer film, which is simple to prepare and has a more stable structure.

[0091] The second sub-planarization layer 26 in this structure can be formed using inkjet printing or 3D printing, both of which can create a structurally stable single-layer film structure with a relatively large thickness. In one example, the second sub-planarization layer 26 is formed using inkjet printing and may include materials such as acrylic resin or cycloolefin resin; or, in another example, the second sub-planarization layer 26 is formed using 3D printing and may include materials such as transparent resin, transparent PLA, transparent PETG, transparent ABS, or transparent nylon.

[0092] It should be noted that in the manufacturing process of display panels, a master board containing multiple panel areas is usually formed first, and then the master board is cut to form multiple independent display panels. When the second sub-planarization layer 26 is formed using inkjet printing, a film layer covering multiple panel areas can be formed on the master board first. When the master board is cut to form independent display panels, this film layer is also cut. In this case, even if the film layer has increased edge thickness due to the manufacturing process, the thickness change is only at the edge of the master board. When the master board is cut into independent display panels, the part of the film layer retained in the display panel does not have thickness changes due to the manufacturing process.

[0093] In one feasible implementation, Figure 19 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 20 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 19 and Figure 20 As shown, the second sub-planarization layer 26 includes at least two second layers 70 stacked along a direction perpendicular to the plane of the substrate 1.

[0094] At this point, the second sub-planarization layer 26 can achieve a greater thickness by stacking at least two film layers, making its thickness design more flexible. This helps to achieve a smaller privacy angle and also allows for greater planarization to improve bezel mura. In other words, by using the total thickness of at least two stacked second layers 70 to meet the thickness requirements of the display panel for the second sub-planarization layer 26, the thickness requirements for a single second layer 70 can be reduced, thereby reducing the requirements for the manufacturing process capabilities of the second layer 70.

[0095] Further, see again Figure 19At least two second layers 70 include a third sublayer 71 and a fourth sublayer 72, with the fourth sublayer 72 located on the side of the third sublayer 71 away from the substrate 1. Specifically, at least in the display area AA, the thickness of the fourth sublayer 72 is greater than the thickness of the third sublayer 71.

[0096] In the above structure, while the third sub-layer 71 and the fourth sub-layer 72 share the thickness requirements, the fourth sub-layer 72 is relatively thicker. The fourth sub-layer 72 is mainly used to control the privacy angle and achieve planarization. The third sub-layer 71 is relatively thin and can be reused as a spacer layer. When it extends into the non-display area NAA, noticeable film undulations occur at the location of the organic encapsulation layer 28. In one embodiment, in the display area AA, the minimum film thickness of the third sub-layer 71 is approximately 1.5 μm. In the area between the barrier 30 and the edge of the display panel, the minimum film thickness of the third sub-layer 71 is in the range of 2 μm-4 μm. The minimum film thickness of the third sub-layer 71 in the area between the barrier 30 and the edge of the display panel is at most three times the minimum film thickness of the third sub-layer 71 in the display area AA.

[0097] Or, see again Figure 20 At least two second layers 70 include a third sublayer 71 and a fourth sublayer 72, with the fourth sublayer 72 located on the side of the third sublayer 71 away from the substrate 1. Specifically, at least in the display area AA, the film thickness of the third sublayer 71 is greater than the film thickness of the fourth sublayer 72.

[0098] In the above structure, while the third sublayer 71 and the fourth sublayer 72 share the thickness requirements, the third sublayer 71 is relatively thicker and is mainly used to control the privacy angle and achieve planarization. The fourth sublayer 72 is relatively thinner and is used to further optimize the flatness of the film layer.

[0099] In one feasible implementation, see again Figure 16 The encapsulation layer 3 includes a first inorganic encapsulation layer 27, an organic encapsulation layer 28, and a second inorganic encapsulation layer 29 stacked along a direction perpendicular to the plane of the substrate 1.

[0100] In a direction perpendicular to the plane of substrate 1, the second sub-planarization layer 26 covers the organic encapsulation layer 28. At at least partially at the same location, the distance from the second sub-planarization layer 26 to the edge of the display panel is less than the distance from the organic encapsulation layer 28 to the edge of the display panel.

[0101] In one embodiment, the organic encapsulation layer 28 covers the display area AA and is also located in the non-display area NAA, the second sub-planarization layer 26 covers the organic encapsulation layer 28, and the edge of the second sub-planarization layer 26 extends outward from the edge of the organic encapsulation layer 28.

[0102] For example, at least in some locations, the edge of the second sub-planarization layer 26 is flush with the edge of the display panel. Exemplarily, the non-display area NAA includes a top border, a left border, a bottom border, and a right border connected in sequence. The top and bottom borders are located on opposite sides of the display area AA, and the left and right borders are also located on opposite sides of the display area AA. The bottom border may include a bonding area. At the top, left, and / or right borders, the edge of the second sub-planarization layer 26 is flush with the edge of the display panel. At the bottom border, the distance from the second sub-planarization layer 26 to the edge of the display panel is greater than zero. The second sub-planarization layer 26 exposes the bonding area to avoid affecting subsequent bonding processes.

[0103] The second sub-planarization layer 26 covers the organic encapsulation layer 28, which can better flatten the thickness undulation of the organic encapsulation layer 28 and further improve the thickness uniformity of the filter layer 4 in the edge display area and the middle display area.

[0104] Of course, when the first planarization layer 15 includes a first sub-planarization layer 18, the first sub-planarization layer 18 can also cover the organic encapsulation layer 28. That is, in a direction perpendicular to the plane of the substrate 1, the first sub-planarization layer 18 covers the organic encapsulation layer 28, and at least partially at the same location, the distance from the first sub-planarization layer 18 to the edge of the display panel is less than the distance from the organic encapsulation layer 28 to the edge of the display panel.

[0105] In one feasible implementation, see again Figure 15 and Figure 16 The display panel also includes a touch layer 20, which is located between the encapsulation layer 3 and the light filter layer 4. A second sub-planarization layer 26 is located between the touch layer 20 and the light filter layer 4.

[0106] In a more specific structure, the touch layer 20 includes a first spacer layer 22, a first electrode layer 23 located on the side of the first spacer layer 22 away from the substrate 1, a second spacer layer 24 located on the side of the first electrode layer 23 away from the substrate 1, and a second electrode layer 25 located on the side of the second spacer layer 24 away from the substrate 1. At least one of the first electrode layer 23 and the second electrode layer 25 includes a touch electrode, and / or at least one of the first electrode layer 23 and the second electrode layer 25 includes touch traces.

[0107] When the display panel includes the touch layer 20, the second sub-planarization layer 26 is located above the touch layer 20 and can also planarize the film undulations of the touch layer 20, reducing the impact of the film undulations of the touch layer 20 on the thickness uniformity of the filter layer 4.

[0108] In other feasible implementations, the second sub-planarization layer 26 may also be located between the touch layer 20 and the encapsulation layer 3.

[0109] In one feasible implementation, Figure 21 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 21 As shown, a second protective layer 31 is included between the second sub-planarization layer 26 and the filter layer 4. The second protective layer 31 is an inorganic layer, which may include materials such as SiON, SiO, and SiN.

[0110] The second protective layer 31 has a dense structure, which can block the intrusion of water, oxygen, impurity ions, etc., and prevent solvent seepage during the manufacturing process of the filter layer 4, thereby avoiding the solvent from reacting with the lower second sub-planarization layer 26 and touch layer 20, and improving the panel yield.

[0111] In one feasible implementation, Figure 22 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 23 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 22 and Figure 23 As shown, a third protective layer 32 is included between the second sub-planarization layer 26 and the touch layer 20. The third protective layer 32 is an inorganic layer, which may include materials such as SiON, SiO, and SiN.

[0112] The third protective layer 32 has a dense structure, which can block the intrusion of water, oxygen, impurity ions, etc., and prevent solvent seepage during the manufacturing process of the second sub-planarization layer 26, thereby avoiding the solvent from reacting with the touch layer 20 below and improving the panel yield.

[0113] Furthermore, the edge of the third protective layer 32 is flush with the edge of the second sub-flattening layer 26.

[0114] When the second sub-planarization layer 26 is included above the third protective layer 32, the second sub-planarization layer 26 can be used as a mask for the third protective layer 32. In the fabrication process of the second sub-planarization layer 26 and the third protective layer 32: First, the second sub-planarization layer 26 is patterned, for example, exposing the binding area of ​​the lower border. Then, the second sub-planarization layer 26 is used as a mask to pattern the third protective layer 32. At this point, the formed third protective layer 32 has the same pattern as the second sub-planarization layer 26, and the edges of the third protective layer 32 are flush with the edges of the second sub-planarization layer 26. This eliminates the need for a separate mask for the third protective layer 32, saving process costs.

[0115] In one feasible implementation, Figure 24 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 24As shown, a second protective layer 31 is included between the second sub-planarization layer 26 and the filter layer 4, and the orthographic projection of the second sub-planarization layer 26 on the plane where the substrate 1 is located covers the orthographic projection of the second protective layer 31 on the plane where the substrate 1 is located; and / or, a third protective layer 32 is included between the second sub-planarization layer 26 and the touch layer 20, and the orthographic projection of the second sub-planarization layer 26 on the plane where the substrate 1 is located covers the orthographic projection of the third protective layer 32 on the plane where the substrate 1 is located.

[0116] When the coverage area of ​​the second sub-planarization layer 26 is greater than the coverage area of ​​the second protective layer 31 and / or the third protective layer 32, the second protective layer 31 and / or the third protective layer 32 are recessed compared to the second sub-planarization layer 26. This can alleviate stress concentration at the edge of the inorganic layer, reduce the risk of film cracking and peeling, and enable it to better perform its protective function.

[0117] In one feasible implementation, see again Figure 16 The first planarization layer 15 includes a first sub-planarization layer 18 and a second sub-planarization layer 26. The first sub-planarization layer 18 is located between the filter layer 4 and the blocking layer 13, and the second sub-planarization layer 26 is located between the filter layer 4 and the encapsulation layer 3.

[0118] In the display area AA, the minimum film thickness of the first sub-planarization layer 18 is d1, and the minimum film thickness of the second sub-planarization layer 26 is d3. Among these, .

[0119] When the first planarization layer 15 includes a first sub-planarization layer 18 and a second sub-planarization layer 26, the control of the privacy angle can be adjusted based on the overall thickness control of the first sub-planarization layer 18 and the second sub-planarization layer 26. In this way, under the condition of a fixed privacy angle design, the first sub-planarization layer 18 and the second sub-planarization layer 26 can jointly bear the thickness requirements of the planarization layer for that privacy angle, and the thickness of neither the first sub-planarization layer 18 nor the second sub-planarization layer 26 needs to be excessive, thereby reducing the requirements on process capabilities.

[0120] in, At this time, the film thickness of the first sub-planarization layer 18 is greater than or equal to the film thickness of the second sub-planarization layer 26. Compared with the second sub-planarization layer 26, the first sub-planarization layer 18 is closer to the blocking layer 13. The thickness control of the second sub-planarization layer 26 has a more direct effect on the control of the privacy angle. Therefore, by making the second sub-planarization layer 26 thicker, a more precise privacy angle design can be achieved.

[0121] At this time, the thickness of the second sub-planarization layer 26 is greater than or equal to the thickness of the first sub-planarization layer 18. As mentioned above, the second sub-planarization layer 26 is also used to fill in the edge thickness variation of the underlying organic encapsulation layer 28, thereby improving the thickness uniformity of the upper filter layer 4 in the central display area and the edge display area. By making the second sub-planarization layer 26 thicker, the frame mura problem can be improved to a greater extent.

[0122] In one example, when d1 + d3 are around 10 μm, 45° privacy protection can be achieved, where 2 μm ≤ d1 ≤ 10 μm and 2 μm ≤ d3 ≤ 8 μm. In one feasible implementation, see again Figure 16 The encapsulation layer 3 includes a first inorganic encapsulation layer 27, an organic encapsulation layer 28, and a second inorganic encapsulation layer 29 stacked along a direction perpendicular to the plane of the substrate 1.

[0123] The first planarization layer 15 includes a first sub-planarization layer 18 and a second sub-planarization layer 26. The first sub-planarization layer 18 is located between the filter layer 4 and the blocking layer 13, and the second sub-planarization layer 26 is located between the filter layer 4 and the encapsulation layer 3.

[0124] In the non-display area (NAA), the minimum distance between the surface of the first sub-planarization layer 18 closest to the substrate 1 (the lower surface of the first sub-planarization layer 18) and the substrate 1 is greater than the maximum distance between the surface of the organic encapsulation layer 28 furthest from the substrate 1 (the upper surface of the organic encapsulation layer 28) and the substrate 1.

[0125] When the first planarization layer 15 includes both a first sub-planarization layer 18 and a second sub-planarization layer 26, the second sub-planarization layer 26 is used to control the privacy angle and achieve planarization to improve frame mura. The second sub-planarization layer 26 has a larger thickness. During the fabrication process of the second sub-planarization layer 26, its material fills the step difference formed by the organic encapsulation layer 28 in the non-display area (NAA). Consequently, when the first sub-planarization layer 18 is formed, the material of the first sub-planarization layer 18 will not sink significantly in the NAA. Therefore, in the NAA, the minimum distance between the lower surface of the first sub-planarization layer 18 and the substrate 1 is greater than the maximum distance between the upper surface of the organic encapsulation layer 28 and the substrate 1. At this time, the first sub-planarization layer 18 does not have a large thickness variation in its coverage area, and the thickness uniformity is good throughout the entire area. Its structural characteristics are more stable, thus allowing for better control of the privacy angle.

[0126] In one feasible implementation, Figure 25 This is another top view of the display panel provided in an embodiment of the present invention. Figure 26 for Figure 25 A sectional view along the C1-C2 direction, such as Figure 25 and Figure 26As shown, the first planarization layer 15 includes a first sub-planarization layer 18 and a second sub-planarization layer 26. The first sub-planarization layer 18 is located between the filter layer 4 and the blocking layer 13, and the second sub-planarization layer 26 is located between the filter layer 4 and the encapsulation layer 3.

[0127] At at least partially at the same location, the distance between the first sub-flattening layer 18 and the edge of the display panel is k1, and the distance between the second sub-flattening layer 26 and the edge of the display panel is k2, where k1 ≥ k2.

[0128] For example, the non-display area NAA includes a top border, a left border, a bottom border, and a right border connected in sequence. The top and bottom borders are located on opposite sides of the display area AA, and the left and right borders are located on opposite sides of the display area AA. The bottom border may include a binding area. At the top, left, right, and / or bottom borders, the distance between the first sub-flattening layer 18 and the edge of the display panel is greater than the distance between the second sub-flattening layer 26 and the edge of the display panel.

[0129] In one embodiment, see again Figure 26 At least partially at the same location, k1 > k2.

[0130] Compared to the second sub-planarization layer 26, the first sub-planarization layer 18 is closer to the barrier layer 13 and has a greater impact on the privacy angle design. Therefore, by adopting an inward-sloping design for the first sub-planarization layer 18, it can avoid the heat-affected zone of the panel during cutting, that is, avoid the high-incidence area of ​​defects and cracks caused by cutting, and reduce the risk of water and oxygen penetration. This effectively improves the adhesion and structural reliability of the first sub-planarization layer 18, making its function more stable.

[0131] In another embodiment, see again Figure 16 At least partially at the same location, the distance from the first sub-planarization layer 18 to the edge of the display panel can also be equal to the distance from the second sub-planarization layer 26 to the edge of the display panel. For example, at least partially, the edges of the first sub-planarization layer 18, the second sub-planarization layer 26, and the edge of the display panel are flush.

[0132] In this structure, the first sub-planarization layer 18 and the second sub-planarization layer 26 can be patterned using masks with the same pattern, which can save the number of masks and reduce the manufacturing cost.

[0133] Furthermore, k1-k2≤20μm, thereby ensuring that the first sub-flattening layer 18 has sufficient coverage area, allowing the first sub-flattening layer 18 to extend the display area AA by a sufficient distance, and improving the reliability of the first sub-flattening layer 18 in adjusting the anti-spy angle.

[0134] In other alternative embodiments, at at least partially the same location, the distance between the first sub-planar layer 18 and the edge of the display panel may also be less than the distance between the second sub-planar layer 26 and the edge of the display panel, that is, at at least partially the location, the first sub-planar layer 18 extends beyond the second sub-planar layer 26.

[0135] In one feasible implementation, at least one first planarization layer 15 includes at least two layers stacked in a direction perpendicular to the plane of the substrate 1, in the display area AA, the total film thickness of the at least two stacked layers being greater than or equal to 2 μm and less than or equal to 8 μm.

[0136] For example, the first sub-planarization layer 18 includes at least two layers stacked in a direction perpendicular to the plane of the substrate 1, in the display area AA, and the total film thickness of these at least two stacked layers is greater than or equal to 2 μm and less than or equal to 8 μm. And / or, the second sub-planarization layer 26 includes at least two layers stacked in a direction perpendicular to the plane of the substrate 1, in the display area AA, and the total film thickness of these at least two stacked layers is greater than or equal to 2 μm and less than or equal to 8 μm.

[0137] In the above structure, the first planarization layer 15 can achieve a greater thickness by stacking at least two film layers, making its thickness design more flexible. This allows for more flexible setting of the privacy angle design or a greater degree of planarization, thus improving the frame mura phenomenon.

[0138] In one embodiment, the first planarization layer 15 can be formed by photolithography, and its stacked layers include materials such as Cardo resin and acrylic photoresist. Photolithography is limited by process conditions such as exposure depth, development uniformity, and etching control precision, resulting in a limited thickness of the formed film. Within the display area, when the total thickness of these at least two stacked layers is in the range of 2μm-8μm, the number of stacked layers will not be excessive, which can reduce the risk of poor film adhesion and easy film detachment, and can also shorten the process cycle.

[0139] In one embodiment, the first planarization layer 15 comprises two stacked film layers.

[0140] In one feasible implementation, at least one first planarization layer 15 is a single-layer film layer, and its thickness within the display area AA is greater than or equal to 6 μm and less than or equal to 15 μm.

[0141] For example, the first sub-planarization layer 18 is a single-layer film, and its thickness within the display area AA is greater than or equal to 6 μm and less than or equal to 15 μm. And / or, the second sub-planarization layer 26 is a single-layer film, and its thickness within the display area AA is greater than or equal to 6 μm and less than or equal to 15 μm.

[0142] When the first planarization layer 15 is a single-layer film, the preparation process is simple and the film structure is more stable.

[0143] In one embodiment, the first planarization layer 15 can be formed by inkjet printing or 3D printing. For example, if the first planarization layer 15 is formed by inkjet printing, the first planarization layer 15 may include materials such as acrylic resin or cycloolefin resin; or, if the first planarization layer 15 is formed by 3D printing, the first planarization layer 15 may include materials such as transparent resin, transparent PLA, transparent PETG, transparent ABS, and transparent nylon.

[0144] Both of the above processes can form a stable single-layer membrane structure with a relatively large thickness, and are more suitable for forming membranes with a thickness of 6μm-15μm.

[0145] In one feasible implementation, see again Figure 2 The side of the barrier layer 13 away from the substrate 1 also includes a second planarization layer 36.

[0146] The second flattening layer 36 is used to fill in the surface undulations of the lower barrier layer 13, thereby achieving surface flattening and improving the adhesion effect when the cover plate is bonded on top of it.

[0147] In one feasible implementation, in the display area AA, the thickness of the second planarization layer 36 is greater than or equal to 2 μm and less than or equal to 15 μm, so that it is sufficient to cover the step of the barrier layer 13.

[0148] In one embodiment, the second planarization layer 36 may be formed using processes such as inkjet printing or 3D printing.

[0149] In one feasible implementation, see again Figure 26 At at least part of the same location, the distance from the second planarization layer 36 to the edge of the display panel is p1, and the distance from the first planarization layer 15 to the edge of the display panel is p2, where p1 ≥ p2.

[0150] Wherein, when the first planarization layer 15 includes a first sub-planarization layer 18 and a second sub-planarization layer 26, at corresponding positions, the distance between the first sub-planarization layer 18 and the edge of the display panel is k1, the distance between the second sub-planarization layer 26 and the edge of the display panel is k2, and p2 is the minimum value of k2 and k1. For example, Figure 26 As shown, if k1 > k2, then p2 is k2.

[0151] In one embodiment, p1 > p2, that is, at least in some locations, the first planarization layer 15 has a larger coverage area, so that the first planarization layer 15 can provide stable support for the upper second planarization layer 36 in this part of the non-display area NAA.

[0152] Alternatively, in another embodiment, p1 = p2. For example, at at least partially the same location, the distance from the second planarization layer 36 to the edge of the display panel is equal to the distance from the first planarization layer 15 to the edge of the display panel. In this case, the second planarization layer 36 and the first planarization layer 15 can be patterned using masks with the same pattern, which can save the number of masks and reduce the process cost.

[0153] Furthermore, p1 > p2, and p1 - p2 ≥ 40 μm. At this point, the lower first flattening layer 15 extends outward by a sufficient distance relative to the upper second flattening layer 36, providing stable support for the upper second flattening layer 36.

[0154] In one feasible implementation, Figure 27 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 27 As shown, the display panel also includes a cover plate 80, which is located on the side of the barrier layer 13 away from the substrate 1. The side of the cover plate 80 close to the substrate 1 includes an ink layer 81, which is located in the non-display area NAA and can be arranged around the display area AA.

[0155] In a direction perpendicular to the plane of substrate 1, the barrier layer 13 overlaps with the ink layer 81, and / or the light-shielding portion 12 overlaps with the ink layer 81.

[0156] The ink layer 81, the blocking layer 13, and the light-shielding part 12 all have light-shielding capabilities. By having the blocking layer 13 and / or the light-shielding part 12 overlap with the ink layer 81, gaps between the blocking layer 13, the light-shielding part 12, and the ink layer 81 can be avoided, which would cause edge light leakage.

[0157] Furthermore, the overlap width x1 between the blocking layer 13 and the ink layer 81 is greater than or equal to 50 μm, and / or the overlap width x2 between the light-shielding portion 12 and the ink layer 81 is greater than or equal to 50 μm.

[0158] This overlap width allows for a certain margin to accommodate positional shifts in the blocking layer 13, the light-shielding part 12, and the ink layer 81 due to process precision, thereby reducing the risk of edge light leakage to a greater extent.

[0159] In one embodiment, the width of the ink layer 81 is in the range of 200μm-600μm, and the distance between the inner edge of the ink layer 81 near the display area AA and the edge of the cover plate 80 is greater than or equal to 200μm.

[0160] When the overlap width x1 between the barrier layer 13 and the ink layer 81 is greater than or equal to 50 μm, the distance between the barrier layer 13 and the edge of the cover plate 80 is greater than or equal to 150 μm. Furthermore, the distance between the barrier layer 13 and the edge of the cover plate 80 is greater than or equal to 150 μm and less than or equal to 550 μm.

[0161] When the overlap width x1 between the light-shielding part 12 and the ink layer 81 is greater than or equal to 50 μm, the distance between the light-shielding part 12 and the edge of the cover plate 80 is greater than or equal to 150 μm. Furthermore, the distance between the light-shielding part 12 and the edge of the cover plate 80 is greater than or equal to 150 μm and less than or equal to 550 μm. The filter part 11 in the filter layer 4 can be located on the side of the barrier 30 near the display area AA.

[0162] In one possible implementation, the blocking layer 13 may be located only around a portion of the pixel area 8. For example, the display panel includes shared pixels and privacy pixels, and the blocking layer 13 is configured for the privacy pixels.

[0163] At this time, the display panel includes a sharing mode and a privacy mode. In sharing mode, at least the shared pixels emit light. Because there is no blocking layer 13 above the shared pixels, the wide-angle light emitted by the shared pixels can exit the panel, giving the display panel a wide viewing angle range. In privacy mode, the shared pixels do not emit light, while the privacy pixels emit light. Because there is a blocking layer 13 above the privacy pixels, the wide-angle light emitted by the privacy pixels is blocked by the blocking layer 13 and cannot escape. Only smaller-angle light can pass through the opening 14 of the blocking layer 13, giving the display panel a narrow viewing angle range and achieving privacy protection.

[0164] In one feasible implementation, Figure 28 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 29 for Figure 28 A sectional view along the D1-D2 direction. Figure 30 for Figure 28 A sectional view along the E1-E2 direction, such as Figures 28-30 As shown, the display layer 2 includes multiple first light-emitting units 37 and multiple second light-emitting units 38, and the first light-emitting units 37 and the second light-emitting units 38 each include multiple pixel areas 8. The first light-emitting units 37 can be understood as the aforementioned shared pixels, and the second light-emitting units 38 can be understood as the aforementioned privacy-protecting pixels.

[0165] In one embodiment, the first light-emitting unit 37 and the second light-emitting unit 38 respectively include a red pixel area 8-R, a green pixel area 8-G, and a blue pixel area 8-B. The number of pixel areas 8 of each color in the first light-emitting unit 37 and the second light-emitting unit 38 is not limited, for example... Figure 28 As shown, both include a red pixel area 8-R, two green pixel areas 8-G, and a blue pixel area 8-B.

[0166] In a direction perpendicular to the plane of substrate 1, the barrier layer 13 overlaps at least with the non-pixel area 9 in the second light-emitting unit 38, and the opening 14 overlaps with the pixel area 8 in the second light-emitting unit 38.

[0167] Based on this structure, the display panel includes a sharing mode and a privacy mode.

[0168] In shared mode, the first light-emitting unit 37 emits light, while the second light-emitting unit 38 may or may not emit light. Because there is no blocking layer 13 above the first light-emitting unit 37, the wide-angle light emitted by the first light-emitting unit 37 can exit the panel, giving the display panel a wider viewing angle range.

[0169] In privacy mode, the first light-emitting unit 37 does not emit light, while the second light-emitting unit 38 emits light. Because a blocking layer 13 is provided above the second light-emitting unit 38, the large-angle light emitted by the second light-emitting unit 38 will be blocked by the blocking layer 13 and cannot be emitted. Only the light at a smaller angle can be emitted through the opening 14 of the blocking layer 13, so that the display panel has only a small viewing angle range, thus achieving privacy.

[0170] In embodiments of the present invention, the first light-emitting unit 37 and the second light-emitting unit 38 can have various arrangements. For example, as... Figure 28 As shown, along the first direction x and the second direction y, the first light-emitting unit 37 and the second light-emitting unit 38 are arranged alternately, and the first direction x intersects the second direction y. Alternatively, in other embodiments, the display layer may include a first unit group and a second unit group arranged alternately along the first direction, the first unit group including a plurality of first light-emitting units 37 arranged in the second direction, and the second unit group including a plurality of second light-emitting units 38 arranged in the second direction.

[0171] In this embodiment of the invention, the blocking layer 13 overlapping with the single second light-emitting unit 38 can have various structures. For example, such as Figure 28 As illustrated, the blocking layer 13 overlapping with a single second light-emitting unit 38 is a connected integral structure. This connected integral structure includes a plurality of openings 14, one of which overlaps with at least one pixel region 8 in the second light-emitting unit 38. Alternatively, as Figure 31 As intended, Figure 31 This is another schematic diagram of a display panel provided in an embodiment of the present invention. The blocking layer 13 overlapping with a single second light-emitting unit 38 includes a plurality of spaced blocking portions 39, each blocking portion 39 including at least one opening 14, and one opening 14 overlapping with at least one pixel area 8 in the second light-emitting unit 38.

[0172] Alternatively, in an alternative implementation, Figure 32 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 32 As shown, the display layer 2 includes multiple light-emitting units 40, and each light-emitting unit 40 includes multiple pixel areas 8.

[0173] For example, the first light-emitting unit 37 and the second light-emitting unit 38 respectively include a red pixel area 8-R, a green pixel area 8-G, and a blue pixel area 8-B. The number of pixel areas 8 of each color in the first light-emitting unit 37 and the second light-emitting unit 38 is not limited, for example... Figure 32 As shown, both include a red pixel area 8-R, two green pixel areas 8-G, and a blue pixel area 8-B.

[0174] In the direction perpendicular to the plane of substrate 1, the non-pixel area 9 in each light-emitting unit 40 overlaps with the blocking layer 13.

[0175] This type of display panel has a single privacy mode. When the display panel displays an image, the light emitted by each light-emitting unit 40 is emitted through the upper blocking layer 13, and only light at a small angle can be emitted, so that the viewing angle of the display panel is small, thus achieving privacy.

[0176] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 33 This is a schematic diagram of a display device provided in an embodiment of the present invention, such as... Figure 33 As shown, the display device includes the aforementioned display panel 100. Of course, Figure 33 The display device shown is for illustrative purposes only. The display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader or television.

[0177] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that, include: A display area and a non-display area that at least partially surrounds the display area; substrate; The display layer, located on one side of the substrate, includes a pixel area and a non-pixel area, wherein the pixel area includes sub-pixels; An encapsulation layer is located on the side of the display layer away from the substrate; A filter layer, located on the side of the encapsulation layer away from the substrate, includes a filter portion and a light-shielding portion. In a direction perpendicular to the plane of the substrate, the filter portion overlaps with the pixel area, and the light-shielding portion overlaps with the non-pixel area. At least one blocking layer is located on the side of the filter layer away from the substrate. The blocking layer has an opening that overlaps with the pixel area in a direction perpendicular to the plane of the substrate, and the blocking layer overlaps with the non-pixel area. A first flattening layer is located between the display layer and the blocking layer and at least covers the display area.

2. The display panel according to claim 1, characterized in that, The number of the barrier layers is less than or equal to 2.

3. The display panel according to claim 1, characterized in that, The first planarization layer includes a first sub-planarization layer, which is located between the filter layer and the blocking layer.

4. The display panel according to claim 3, characterized in that, In the display area, the minimum film thickness of the first sub-planarization layer is d1, where 2μm≤d1≤30μm.

5. The display panel according to claim 4, characterized in that, 2μm≤d1≤15μm, or 12μm≤d1≤30μm.

6. The display panel according to claim 3, characterized in that, In the display area, the minimum film thickness of the first sub-planarization layer is d1, and the minimum film thickness of the barrier layer is d. .

7. The display panel according to claim 6, characterized in that, ,or, .

8. The display panel according to claim 3, characterized in that, In the display area, the minimum film thickness of the first sub-planarization layer is d1. In the non-display area, a barrier is included. In the region between the barrier and the edge of the display panel, the minimum film thickness of the first sub-planarization layer is d1'. .

9. The display panel according to claim 3, characterized in that, The first sub-planar layer is a single-layer membrane structure.

10. The display panel according to claim 3, characterized in that, The first sub-planarization layer comprises at least two first layers stacked along a direction perpendicular to the plane of the substrate.

11. The display panel according to claim 10, characterized in that, At least two of the first layers include a first sublayer and a second sublayer, wherein the second sublayer is located on the side of the first sublayer away from the substrate; Wherein, at least in the display area, the film thickness of the second sub-layer is greater than the film thickness of the first sub-layer.

12. The display panel according to claim 10, characterized in that, At least two first layers include a first sublayer and a second sublayer, wherein the second sublayer is located on the side of the first sublayer away from the substrate; Wherein, at least in the display area, the film thickness of the first sub-layer is greater than the film thickness of the second sub-layer.

13. The display panel according to claim 3, characterized in that, A first protective layer is also included between the first sub-planarization layer and the barrier layer.

14. The display panel according to claim 13, characterized in that, In the display area, the minimum film thickness of the first sub-planarization layer is d1, and the minimum film thickness of the first protective layer is d2. .

15. The display panel according to claim 13, characterized in that, The orthographic projection of the first sub-planar layer onto the plane of the substrate overlaps the orthographic projection of the first protective layer onto the plane of the substrate.

16. The display panel according to claim 3, characterized in that, The first sub-planarization layer contacts the filter layer on the side closer to the substrate, and the first sub-planarization layer contacts the barrier layer on the side farther from the substrate.

17. The display panel according to claim 1, characterized in that, The first planarization layer includes a second sub-planarization layer, which is located between the filter layer and the encapsulation layer.

18. The display panel according to claim 17, characterized in that, In the display area, the minimum film thickness of the second sub-planarization layer is d3, where 2μm≤d3≤15μm.

19. The display panel according to claim 17, characterized in that, In the display area, the minimum film thickness within the second sub-planarization layer is d3. The non-display area includes a barrier, and in the region between the barrier and the edge of the display panel, the minimum film thickness of the second sub-planarization layer is d3'. .

20. The display panel according to claim 17, characterized in that, The second sub-planar layer is a single-layer membrane structure.

21. The display panel according to claim 17, characterized in that, The second sub-planarization layer comprises at least two second layers stacked along a direction perpendicular to the plane of the substrate.

22. The display panel according to claim 21, characterized in that, At least two of the second layers include a third sublayer and a fourth sublayer, wherein the fourth sublayer is located on the side of the third sublayer away from the substrate; Wherein, at least in the display area, the film thickness of the fourth sub-layer is greater than the film thickness of the third sub-layer.

23. The display panel according to claim 21, characterized in that, At least two of the second layers include a third sublayer and a fourth sublayer, wherein the fourth sublayer is located on the side of the third sublayer away from the substrate; Wherein, at least in the display area, the film thickness of the third sub-layer is greater than the film thickness of the fourth sub-layer.

24. The display panel according to claim 17, characterized in that, The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked along a direction perpendicular to the plane of the substrate; In a direction perpendicular to the plane of the substrate, the second sub-planarization layer covers the organic encapsulation layer, and at at least partially at the same location, the distance from the second sub-planarization layer to the edge of the display panel is less than the distance from the organic encapsulation layer to the edge of the display panel.

25. The display panel according to claim 17, characterized in that, The display panel further includes a touch layer located between the encapsulation layer and the filter layer, wherein the second sub-planarization layer is located between the touch layer and the filter layer.

26. The display panel according to claim 25, characterized in that, A second protective layer is included between the second sub-planarization layer and the filter layer.

27. The display panel according to claim 25, characterized in that, A third protective layer is included between the second sub-planar layer and the touch layer.

28. The display panel according to claim 27, characterized in that, The edge of the third protective layer is flush with the edge of the second sub-flat layer.

29. The display panel according to claim 25, characterized in that, A second protective layer is included between the second sub-planarization layer and the filter layer, and the orthographic projection of the second sub-planarization layer on the plane where the substrate is located covers the orthographic projection of the second protective layer on the plane where the substrate is located; And / or, a third protective layer is included between the second sub-planarization layer and the touch layer, wherein the orthographic projection of the second sub-planarization layer on the plane of the substrate covers the orthographic projection of the third protective layer on the plane of the substrate.

30. The display panel according to claim 1, characterized in that, The first planarization layer includes a first sub-planarization layer and a second sub-planarization layer, wherein the first sub-planarization layer is located between the filter layer and the blocking layer, and the second sub-planarization layer is located between the filter layer and the encapsulation layer; In the display area, the minimum film thickness of the first sub-planarization layer is d1, and the minimum film thickness of the second sub-planarization layer is d3. .

31. The display panel according to claim 1, characterized in that, The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked along a direction perpendicular to the plane of the substrate; The first planarization layer includes a first sub-planarization layer and a second sub-planarization layer, wherein the first sub-planarization layer is located between the filter layer and the blocking layer, and the second sub-planarization layer is located between the filter layer and the encapsulation layer; In the non-display area, the minimum distance between the surface of the first sub-planar layer closest to the substrate and the substrate is greater than the maximum distance between the surface of the organic encapsulation layer furthest from the substrate and the substrate.

32. The display panel according to claim 1, characterized in that, The first planarization layer includes a first sub-planarization layer and a second sub-planarization layer, wherein the first sub-planarization layer is located between the filter layer and the blocking layer, and the second sub-planarization layer is located between the filter layer and the encapsulation layer; At at least partially at the same location, the distance between the first sub-flattening layer and the edge of the display panel is k1, and the distance between the second sub-flattening layer and the edge of the display panel is k2, where k1 ≥ k2.

33. The display panel according to claim 32, characterized in that, k1-k2≤20μm.

34. The display panel according to claim 1, characterized in that, At least one of the first planarization layers comprises at least two layers stacked in a direction perpendicular to the plane of the substrate, wherein in the display area, the total film thickness of the at least two stacked layers is greater than or equal to 2 μm and less than or equal to 8 μm.

35. The display panel according to claim 1, characterized in that, At least one of the first planarization layers is a single-layer film, and its thickness within the display area is greater than or equal to 6 μm and less than or equal to 15 μm.

36. The display panel according to claim 1, characterized in that, The barrier layer further includes a second planarization layer on the side away from the substrate.

37. The display panel according to claim 36, characterized in that, In the display area, the thickness of the second planarization layer is greater than or equal to 2 μm and less than or equal to 15 μm.

38. The display panel according to claim 36, characterized in that, At at least partially at the same location, the distance between the second flattening layer and the edge of the display panel is p1, and the distance between the first flattening layer and the edge of the display panel is p2, where p1 ≥ p2.

39. The display panel according to claim 38, characterized in that, p1>p2, p1-p2≥40μm.

40. The display panel according to claim 1, characterized in that, The display panel further includes a cover plate located on the side of the barrier layer away from the substrate, and the side of the cover plate close to the substrate includes an ink layer. In a direction perpendicular to the plane of the substrate, the barrier layer overlaps with the ink layer, and / or the light-shielding portion overlaps with the ink layer.

41. The display panel according to claim 40, characterized in that, The overlap width between the blocking layer and the ink layer is greater than or equal to 50 μm, and / or the overlap width between the light-shielding portion and the ink layer is greater than or equal to 50 μm.

42. The display panel according to claim 1, characterized in that, The display layer includes a plurality of first light-emitting units and a plurality of second light-emitting units, wherein the first light-emitting units and the second light-emitting units each include a plurality of pixel regions; In a direction perpendicular to the plane of the substrate, the opening overlaps with the pixel area in the second light-emitting unit, and the blocking layer overlaps with at least the non-pixel area in the second light-emitting unit.

43. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 42.

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