Display panel and display device

Abstract

The present application relates to the technical field of display. Disclosed are a display panel and a display device. A display substrate in the display panel comprises a base substrate, a plurality of pixel units, a first dimming layer and a second dimming layer. The refractive index of the first dimming layer is different from that of the second dimming layer, so that the effect of converging light emitted by the pixel units can be achieved, thereby increasing the forward light output amount of the pixel units, and improving the display effect of the display panel. Moreover, as the thickness of the parts of the second dimming layer that are located in first target areas within a transition area is relatively small, an expansion space can be provided for the material expansion of the second dimming layer, and the total expansion amount of the second dimming layer can thus be reduced. Thus, excessive expansion of the second dimming layer can be prevented, and the possibility of warping of the display panel can thus be reduced, thereby reducing the possibility of layer peeling within the display panel, and improving the display panel yield.

Description

Display panel and display device

[0001] This disclosure claims priority to Chinese patent application number 202311424573.2, filed on October 30, 2023, entitled “Display Panel and Display Device.” The entire contents of the above case are incorporated by reference into this disclosure. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] The display panel includes a base substrate and pixel units located in a display area of ​​the base substrate, wherein the pixel units can emit light to realize display on the display panel.

[0004] Summary of the Invention

[0005] The present application provides a display panel and a display device, and the technical solutions are as follows:

[0006] In one aspect, a display panel is provided, comprising: a display substrate; the display substrate comprising:

[0007] a base substrate having a hole area, a transition area surrounding the hole area, a display area surrounding the transition area, and a peripheral area surrounding the display area;

[0008] and, a plurality of pixel units located on one side of the base substrate, wherein the plurality of pixel units are located in the display area;

[0009] The display panel further includes: a first dimming layer and a second dimming layer located on a side of the plurality of pixel units away from the base substrate and stacked in sequence;

[0010] The first dimming layer and the second dimming layer are located in the display area and the transition area, the refractive index of the first dimming layer is different from the refractive index of the second dimming layer, the portion of the second dimming layer located in the transition area has multiple first target areas, and the thickness of the portion of the second dimming layer located in the first target area is less than the thickness of the portion of the second dimming layer located in other areas of the transition area except the first target area.

[0011] Optionally, the structure of the second dimming layer located in the first target area is a groove; or the structure of the second dimming layer located in the first target area is a through hole.

[0012] Optionally, the orthographic projection of each first target area on the substrate is annular, and the orthographic projection of the first target area on the substrate surrounds the hole area;

[0013] There is a gap between any two adjacent first target areas among the plurality of first target areas, and the orthographic projection of the gap on the substrate is annular.

[0014] Optionally, the orthographic projection of each first target region on the substrate is in the shape of a strip, and the extension direction of each first target region is the arrangement direction of the hole region and the transition region;

[0015] The plurality of first target areas are evenly arranged around the hole area.

[0016] Optionally, the plurality of first target areas include: a plurality of first sub-areas and a plurality of second sub-areas, wherein the plurality of first sub-areas are closer to the hole area than the plurality of second sub-areas;

[0017] The plurality of first sub-regions are evenly arranged in a ring-shaped manner, and the orthographic projection of the arrangement direction of the plurality of first sub-regions on the substrate surrounds the hole area;

[0018] The plurality of second sub-regions are evenly arranged in a ring-like manner, and the orthographic projections of the arrangement directions of the plurality of second sub-regions on the base substrate surround the orthographic projections of the plurality of first sub-regions on the base substrate;

[0019] The plurality of first sub-regions and the plurality of second sub-regions are arranged in a staggered manner.

[0020] Optionally, the orthographic projection of the first sub-region on the substrate and the orthographic projection of the second sub-region on the substrate are both in the shape of a trapezoid, a circle, a semicircle, an arc, a triangle, a rectangle, a hexagon or an octagon.

[0021] Optionally, a portion of the first dimming layer located in the transition region has a plurality of first grooves, and at least a portion of the second dimming layer is located in the plurality of first grooves.

[0022] Optionally, the plurality of first grooves correspond to the plurality of first target areas on a one-to-one basis, and an orthographic projection of each first groove on the base substrate overlaps with an orthographic projection of a corresponding first target area on the base substrate.

[0023] Optionally, the plurality of first grooves and the plurality of first target areas are staggered.

[0024] Optionally, the display panel further includes: a color filter layer located on a side of the second dimming layer away from the base substrate;

[0025] The color filter layer includes a plurality of color resist blocks located in the display area, a plurality of dummy color resist blocks located in the transition area, and a black matrix located in the display area and the transition area;

[0026] The black matrix has a plurality of openings, each opening is used to expose a corresponding color resist block, and the orthographic projection of each color resist block on the base substrate covers the light emitting area of ​​a corresponding pixel unit.

[0027] Optionally, the structure of the second dimming layer located in the first target area is a groove or a through hole;

[0028] At least a portion of the black matrix located in the transition region is located in the plurality of first target regions.

[0029] Optionally, the first dimming layer and the second dimming layer are also located in the peripheral area; the portion of the second dimming layer located in the peripheral area has multiple second target areas, and the thickness of the portion of the second dimming layer located in the second target area is less than the thickness of the portion of the second dimming layer located in other areas of the peripheral area except the second target area.

[0030] Optionally, the structure of the second dimming layer located in the second target area is a groove; or the structure of the second dimming layer located in the second target area is a through hole.

[0031] Optionally, a portion of the first dimming layer located in the peripheral area has a plurality of second grooves, and at least a portion of the second dimming layer is located in the plurality of second grooves.

[0032] Optionally, the structure of the second dimming layer located in the second target area is a groove or a through hole; the black matrix in the color filter layer included in the display panel is also located in the peripheral area;

[0033] At least a portion of the black matrix located in the peripheral area is located in the plurality of second target areas.

[0034] Optionally, the refractive index of the first dimming layer is smaller than the refractive index of the second dimming layer;

[0035] The portion of the first dimming layer located in the display area away from the surface of the display substrate has a groove structure, the angle between the extended surface of the side of the groove structure and the supporting surface of the base substrate is an acute angle or an obtuse angle, and the side wall of the groove structure is used to converge light.

[0036] Optionally, the orthographic projection of the groove structure on the display substrate is located in the non-luminous area of ​​the pixel unit; the depth of the groove structure is less than the thickness of the first dimming layer;

[0037] The portion of the first dimming layer located in the display area and away from the surface of the display substrate has a convex structure, and the orthographic projection of the convex structure on the display substrate is located in the light-emitting area of ​​the pixel unit;

[0038] The side surface of the groove structure is the interface between the groove structure and the protrusion structure.

[0039] Optionally, the orthographic projection of the groove structure on the display substrate is located in the non-luminous area of ​​the pixel unit; the depth of the groove structure is less than the thickness of the first dimming layer;

[0040] The first dimming layer includes a plurality of dimming structures arranged at intervals, and the orthographic projections of the dimming structures on the display substrate are located in the light-emitting area of ​​the pixel unit;

[0041] The side surface of the groove structure is the interface between the groove structure and the dimming structure.

[0042] Optionally, the orthographic projection of the groove structure on the display substrate is located in the light-emitting area of ​​the pixel unit; and the depth of the groove structure is less than or equal to the thickness of the first dimming layer.

[0043] On the other hand, a display device is provided, comprising: a power supply component and the display panel according to the above aspect;

[0044] Wherein, the power supply component is used to supply power to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] FIG1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;

[0047] FIG2 is a top view of a substrate provided in an embodiment of the present application;

[0048] FIG3 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0049] FIG4 is a partial schematic diagram of a second dimming layer provided in an embodiment of the present application;

[0050] FIG5 is a partial schematic diagram of another second dimming layer provided in an embodiment of the present application;

[0051] FIG6 is a partial schematic diagram of another second dimming layer provided in an embodiment of the present application;

[0052] FIG7 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0053] FIG8 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0054] FIG9 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0055] FIG10 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0056] FIG11 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0057] FIG12 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0058] FIG13 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0059] FIG14 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0060] FIG15 is a partial schematic diagram of a target film layer and a first organic functional layer provided in an embodiment of the present application;

[0061] FIG16 is a partial schematic diagram of a touch substrate provided in an embodiment of the present application;

[0062] FIG17 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0063] FIG18 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0064] FIG19 is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0066] In related art, the display panel further includes a dimming layer located in the display area. The dimming layer can converge light in the edge area of ​​the pixel unit to increase the amount of forward light emitted by the pixel unit.

[0067] However, the dimming layer is prone to warping during the subsequent film layer preparation process, which may pull other film layers in the display panel, causing separation between the film layers in the display panel, resulting in a low yield of the display panel.

[0068] FIG1 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application. Referring to FIG1 , the display panel 10 includes: a display substrate 101 , a first dimming layer 102 , and a second dimming layer 103 . The display substrate 101 includes: a base substrate 1011 and a plurality of pixel units 1012 .

[0069] Figure 2 is a top view of a substrate provided by an embodiment of the present application. Referring to Figures 1 and 2 , the substrate 1011 includes a hole region 1011a, a transition region 1011b surrounding the hole region 1011a, a display region 1011c surrounding the transition region 1011b, and a peripheral region 1011d surrounding the display region 1011c.

[0070] Among them, multiple pixel units 1012 are located on one side of the base substrate 1011 and in the display area 1011c. Multiple pixel units 1012 can be used to emit light, thereby realizing the display function of the display panel 10. The first dimming layer 102 and the second dimming layer 103 are located on the side of the multiple pixel units 1012 away from the base substrate 1011 and are stacked in sequence along the direction away from the base substrate 1011. The first dimming layer 102 and the second dimming layer 103 are located in the display area 1011c and the transition area 1011b, and the parts of the first dimming layer 102 and the second dimming layer 103 located in the display area 1011c can be used to dim the light emitted by the pixel unit 1012, so as to increase the light output of the pixel unit 1012, increase the luminous brightness of the display panel 10, and improve the display effect. Optionally, the materials of the first dimming layer 102 and the second dimming layer 103 can both be optical adhesive (OC).

[0071] Optionally, the refractive index of the first dimming layer 102 is different from the refractive index of the second dimming layer 103. In the display area 1011c, when light from the edge area of ​​the pixel unit 1012 is irradiated at the interface between the first dimming layer 102 and the second dimming layer 103, the light can be refracted, and the refraction direction is closer to the target direction (the target direction is perpendicular to the supporting surface of the base substrate 1011) relative to the incident direction. In other words, the first dimming layer 102 and the second dimming layer 103 can converge the light from the edge area of ​​the pixel unit 1012 to increase the amount of forward light emitted by the pixel unit 1012.

[0072] During the entire preparation process of the display panel, after the second dimming layer 103 is prepared, during the subsequent preparation process of other film layers, the entire structure may need to be processed in a high temperature or high humidity environment. High temperature can refer to above 85°C (degrees Celsius), and high humidity can refer to above 85%. Furthermore, due to the particularity of the material of the second dimming layer 103, the second dimming layer 103 is prone to physical property changes (such as expansion) in a high temperature or high humidity environment, which may cause the display panel to warp. Optionally, the material of the second dimming layer 103 can be zirconium oxide particles with microparticles added to an organic resin.

[0073] Normally, if the display panel warps, it is easy to cause the film layer in the display panel to separate (peeling). Moreover, if the film layer separates, it is more likely to cause water vapor or oxygen to invade the display area 1011c along the surface of the separated film layer, resulting in the appearance of hole black spots (black spots at the edge of the hole, GDSH) in the display area 1011c of the display panel 10, poor display effect, and in severe cases, the product may be scrapped. Furthermore, when the physical properties of the second dimming layer 103 change, the portion of the film layer in the display substrate 101 located in the transition area 1011b near the hole area 1011a is more likely to separate (peeling), and the sidewalls of the hole area 1011a are exposed. Therefore, water vapor and oxygen are more likely to invade the display area 1011c from the sidewalls of the hole area 1011a through the transition area 1011b. Therefore, in order to ensure the display effect of the display panel 10, the portion of the second dimming layer 103 located in the transition area 1011b needs to be specially designed to prevent the display panel 10 from warping, thereby preventing film separation from causing water vapor and oxygen intrusion.

[0074] In an embodiment of the present application, the portion of the second dimming layer 103 located in the transition area 1011b has multiple first target areas 103a, and the thickness of the portion of the second dimming layer 103 located in the first target area 103a is less than the thickness of the portion of the second dimming layer 103 located in other areas of the transition area 1011b except the first target area 103a.

[0075] During the subsequent high-temperature or high-humidity process of forming the display panel 10, since the thickness of the portion of the second dimming layer 103 located in the first target area 103a is relatively small, expansion space can be provided for the material expansion of the second dimming layer 103. The expansion space can provide stress guidance or buffering for the second dimming layer 103, accommodating a portion of the expansion of the second dimming layer 103, thereby reducing the total expansion of the second dimming layer 103 and avoiding excessive expansion of the second dimming layer 103, thereby reducing the possibility of warping of the display panel, reducing the possibility of film separation in the display panel, and improving the yield of the display panel.

[0076] In summary, an embodiment of the present application provides a display panel, in which a display substrate includes a base substrate, a plurality of pixel units, a first dimming layer, and a second dimming layer. The refractive index of the first dimming layer is different from the refractive index of the second dimming layer, thereby achieving the effect of converging the light emitted by the pixel unit, so as to increase the amount of forward light emitted by the pixel unit and improve the display effect of the display panel. Moreover, since the thickness of the portion of the second dimming layer located in the first target area of ​​the transition region is relatively small, expansion space can be provided for the material expansion of the second dimming layer, thereby reducing the total expansion of the second dimming layer. In this way, the expansion of the second dimming layer can be avoided to be too large, thereby reducing the possibility of warping of the display panel, thereby reducing the possibility of separation of the film layer in the display panel, and improving the yield of the display panel.

[0077] Alternatively, referring to Figure 1 , the structure of the second dimming layer 103 located in the first target area 103a may be a through hole. Alternatively, referring to Figure 2 , the structure of the second dimming layer 103 located in the first target area 103a may be a groove.

[0078] For a flat display panel (non-foldable), the structure of the second dimming layer 103 located in the first target area 103a can be a through hole or a groove, as long as the first target area 103a can provide sufficient expansion space for the second dimming layer 103.

[0079] For foldable display panels, the refraction process can easily cause the film layers to shift, resulting in lower stability. If the second dimming layer 103 in the first target area 103a is a through-hole, this may cause even greater film shift. Therefore, for foldable display panels, the second dimming layer 103 in the first target area 103a can preferably be formed as a groove. The depth of the groove can be flexibly adjusted to suit different products.

[0080] In an embodiment of the present application, for any foldable display panel, a fixed value can be first selected as the depth of the groove in the second dimming layer 103, and then the performance test of the foldable display panel can be carried out. If all the performance characteristics of the foldable display panel meet the factory requirements, the fixed value can be directly used as the depth of the groove of the second dimming layer 103 in the foldable display panel. If the amount of displacement of the foldable display panel during the folding process cannot meet the displacement requirement, the depth of the groove of the second dimming layer 103 in the foldable display panel can be appropriately reduced on the basis of the fixed value. If the foldable display panel warps too much due to insufficient expansion space of the second dimming layer 103, the depth of the groove of the second dimming layer 103 in the foldable display panel can be appropriately increased on the basis of the fixed value. Optionally, the thickness of the second dimming layer 103 can be 5μm (micrometers), and the fixed value can be half of the thickness of the second dimming layer 103, that is, the fixed value can be 2.5μm.

[0081] As an optional implementation, referring to FIG4 , the orthographic projection of each first target area 103a on the base substrate 1011 is annular, and the orthographic projection of the first target area 103a on the base substrate 1011 surrounds the aperture 1011a. Referring to FIG4 , a gap exists between any two adjacent first target areas 103a among the plurality of first target areas 103a, and the orthographic projection of the gap on the base substrate 1011 is annular. In other words, the plurality of first target areas 103a disposed in the portion of the second dimming layer 103 located in the transition region 1011b can be arranged sequentially and nested.

[0082] For example, referring to FIG4 , the portion of the second dimming layer 103 located in the transition region 1011b may have three first target regions 103a, and these three first target regions 103a may be arranged in sequence. Of course, the portion of the second dimming layer 103 located in the transition region 1011b may have other numbers of first target regions 103a, and this embodiment of the present application is not limited thereto.

[0083] Typically, the width of the first target area 103a ranges from 10 μm to 20 μm. Since the larger the width of the first target area 103a, the more likely it is to generate a risk of bubbles during the subsequent attachment process of the polarizing layer, the preferred width may be 10 μm. In addition, the distance between adjacent first target areas 103a may be 50 μm to 80 μm. Taking into account the separation risk of the film layer and the need for stress release, the spacing may be 50 μm, 55 μm, etc. Furthermore, multiple first target areas 103a are arranged at equal intervals, and the number may be greater than or equal to 3.

[0084] As another optional implementation, referring to FIG5 , the orthographic projection of each first target region 103a on the base substrate 1011 is strip-shaped, and each first target region 103a extends in the direction of the arrangement of the aperture region 1011a and the transition region 1011b. The plurality of first target regions 103a are evenly arranged around the aperture region. For example, in FIG5 , the portion of the second dimming layer 103 located in the transition region 1011b may have eight first target regions 103a.

[0085] Typically, the width of the first target area 103a ranges from 10 μm to 20 μm. Since the larger the width of the first target area 103a, the more likely it is to generate air bubbles during the subsequent attachment process of the polarizing layer, the preferred width may be 10 μm. The multiple first target areas 103a may be distributed in a "M" shape. That is, the angle between the extension lines of adjacent first target areas 103a is 45°. The number of first target areas 103a is preferably 8, but it can also be adjusted according to actual needs, for example, it can be 6.

[0086] As another optional implementation, referring to FIG6 , the plurality of first target areas 103a include: a plurality of first sub-areas 103a1 and a plurality of second sub-areas 103a2. The plurality of first sub-areas 103a1 are closer to the hole area 1011a than the plurality of second sub-areas 103a2. The plurality of first sub-areas 103a1 can be referred to as inner ring areas, and the plurality of second sub-areas 103a can be referred to as outer ring areas.

[0087] The plurality of first sub-regions 103a1 are uniformly arranged in a circular manner, and the orthographic projections of the arrangement directions of the plurality of first sub-regions 103a1 on the base substrate 1011 surround the hole region 1011a. The plurality of second sub-regions 103a2 are uniformly arranged in a circular manner, and the orthographic projections of the arrangement directions of the plurality of second sub-regions 103a2 on the base substrate 1011 surround the orthographic projections of the plurality of first sub-regions 103a1 on the base substrate 1011. The plurality of first sub-regions 103a1 and the plurality of second sub-regions 103a2 are staggered.

[0088] Optionally, referring to FIG6 , the orthographic projection of the first sub-region 103a1 on the base substrate 1011 and the orthographic projection of the second sub-region 103a2 on the base substrate 1011 are both trapezoidal in shape. Furthermore, the upper base of the trapezoid is closer to the hole region 1011a than the lower base of the trapezoid. Of course, the orthographic projection of the first sub-region 103a1 on the base substrate 1011 and the orthographic projection of the second sub-region 103a2 on the base substrate 1011 may be other shapes, such as a circle, a semicircle, an arc, a triangle, a square, a rectangle, a hexagon, an octagon, and the like. This embodiment of the present application is not limited thereto.

[0089] Under normal circumstances, the arrangement of multiple second sub-regions 103a1 can follow an equidistant distribution according to the 12 o'clock model of a clock, that is, the included angle between the central axis extension lines of two adjacent second sub-regions 103a is 30°. Correspondingly, multiple first sub-regions 103a1 follow the same rule. Referring to FIG. 6, any one first sub-region 103a1 (inner ring region) and two relative second sub-regions 103a2 (outer ring region) form a "pin" shape. Optionally, for the same circular sub-region, the distance range between any two adjacent sub-regions is 50 μm to 80 μm. Considering the separation risk of the film layer and the stress release requirement, the spacing can be 50 μm, 55 μm, etc.

[0090] FIG. 7 is a schematic structural diagram of another display panel provided by an embodiment of the present application. Referring to FIG. 7, a part of the first dimming layer 102 located in the transition region 1011b has multiple first grooves 102a, and at least a part of the second dimming layer 103 is located in the multiple first grooves 102a.

[0091] Since a part of the first dimming layer 102 located in the transition region 1011b is designed with first grooves 102a, and at least a part of the second dimming layer 103 is located in the multiple first grooves 102a, a nested structure can be formed between the part of the second dimming layer 103 and the first dimming layer 102 located in the transition region 1011b, improving the contact area between the second dimming layer 103 and the first dimming layer 102, and further improving the bonding force between the second dimming layer 103 and the first dimming layer 102, and avoiding the separation of the first dimming layer 102 and the second dimming layer 103.

[0092] Optionally, the preparation method of multiple first grooves 102a in the first dimming layer 102 may include: forming a first dimming thin film; patterning the first dimming thin film using a first mask plate to obtain the first dimming layer 102. Among them, the process of patterning includes: coating photoresist, exposing, developing, etching, and removing the photoresist. The depth of the first grooves 102a in the first dimming layer 102 is controlled by controlling the etching duration of the etching process. <*

[0093] In addition, the preparation method of the structure (groove or through hole) of the second dimming layer 103 located in the first target region 103a may include: forming a second dimming thin film; patterning the second dimming thin film using a second mask plate to obtain the second dimming layer 103. Among them, the process of patterning includes: coating photoresist, exposing, developing, etching, and removing the photoresist. The depth of the structure of the first target region 103a in the second dimming layer 103 is controlled by controlling the etching duration of the etching process.

[0094] 7 , the plurality of first grooves 102a correspond one-to-one to the plurality of first target areas 103a, and the orthographic projection of each first groove 102a on the base substrate 1011 overlaps with the orthographic projection of a corresponding first target area 103a on the base substrate 1011. In this case, the first mask used to form the plurality of first grooves 102a in the first dimming layer 102 and the second mask used to form the plurality of first target areas 103a in the second dimming layer 103 can be the same mask.

[0095] Referring to FIG8 , the plurality of first grooves 102a and the plurality of first target areas 103a are staggered. That is, the orthographic projection of each first groove 102a on the base substrate 1011 does not overlap with the orthographic projection of any of the plurality of first target areas 103a on the base substrate 1011. In this case, the first mask used to form the plurality of first grooves 102a in the first dimming layer 102 and the second mask used to form the plurality of first target areas 103a in the second dimming layer 103 are two different mask plates.

[0096] 1 , 3 , 7 , and 8 , the display panel 10 further includes a polarizer (POL) 104 (e.g., a circular polarizer) located on a side of the second dimming layer 103 away from the base substrate 1011. The polarizer 104 is used to change the polarization of light, thereby effectively preventing ambient light from interfering with the display brightness and contrast of the display panel.

[0097] In order to improve the transmittance of the display panel and make the display panel thinner, a solution without a polarizer (POL) is adopted, for example, by forming a color filter layer 105 (color filter on encapsulation, COE) on the upper side of the second dimming layer 103 in the display panel 10.

[0098] 9 and 10 , the display panel 10 further includes a color filter layer 105 located on a side of the second dimming layer 103 away from the base substrate 1011. The color filter layer 105 includes a plurality of color resist blocks 1051 located in the display region 1011 c, a plurality of dummy color resist blocks 1052 located in the transition region 1011 b, and a black matrix 1053 located in the display region 1011 c and the transition region 1011 b.

[0099] The black matrix 1053 has multiple openings, each of which is used to expose a corresponding color resist block 1051. The orthographic projection of each color resist block 1051 on the base substrate 1011 covers the light-emitting area of ​​a corresponding pixel unit 1012. Light emitted by the pixel unit 1012 can pass through the corresponding color resist block 1051 and then be emitted.

[0100] The dummy color blocks 1052 of the color filter layer 105 in the transition region 1011b are designed to prevent the display effect of the display region 1011c from being affected by the sudden change in the design structure between the display region 1011c and the transition region 1011b.

[0101] Referring to Figure 9 , at least a portion of the black matrix 1053 located in the transition region 1011b is located within the plurality of first target regions 103a. In other words, the black matrix 1053 and the second dimming layer 103 can form a nested structure, increasing the contact area between the second dimming layer 103 and the black matrix 1053, thereby improving the bonding strength between the second dimming layer 103 and the black matrix 1053 and preventing separation between the black matrix 1053 and the second dimming layer 103.

[0102] In the embodiment of the present application, the first dimming layer 102 and the second dimming layer 103 are also located in the peripheral region 1011d. Because the physical properties of the second dimming layer 103 change, the film layers in the display substrate 101 are susceptible to separation, not only in the transition region 1011b but also in the peripheral region 1011d. This can lead to moisture and oxygen invading the display region 1011c through the peripheral region 1011d. Therefore, to ensure the display quality of the display panel 10, the portion of the second dimming layer 103 located in the peripheral region 1011d requires special design.

[0103] In an embodiment of the present application, referring to Figure 11, the portion of the second dimming layer 103 located in the peripheral area 1011d has multiple second target areas 103b, and the thickness of the portion of the second dimming layer 103 located in the second target area 103b is less than the thickness of the portion of the second dimming layer 103 located in other areas of the peripheral area 1011d except the second target area 103b.

[0104] During the subsequent high-temperature or high-humidity process of forming the display panel, since the thickness of the portion of the second dimming layer 103 located in the second target area 103b is relatively small, expansion space can be provided for the material expansion of the second dimming layer 103. The expansion space can provide stress guidance or buffering for the second dimming layer 103, accommodating a portion of the expansion of the second dimming layer 103, thereby reducing the total expansion of the second dimming layer 103 and avoiding excessive expansion of the second dimming layer 103, thereby reducing the possibility of warping of the portion of the display panel 10 located in the peripheral area 1011d, thereby reducing the possibility of film layer separation in the display panel 10 and improving the yield of the display panel 10.

[0105] Alternatively, referring to Figure 11 , the structure of the second dimming layer 103 located in the second target area 103b may be a through hole. Alternatively, referring to Figure 12 , the structure of the second dimming layer 103 located in the second target area 103b may be a groove.

[0106] For a flat display panel (non-foldable), the structure of the second dimming layer 103 located in the second target area 103b can be a through hole or a groove, as long as the second target area 103b can provide sufficient expansion space for the second dimming layer 103.

[0107] For foldable display panels, the film layer is easily displaced during refraction, resulting in lower stability. If the second dimming layer 103 is located in the second target area 103b as a through-hole, the film layer may be displaced to a greater extent. Therefore, for foldable display panels, the second dimming layer 103 is preferably located in the second target area 103b as a groove. The depth of the groove can be flexibly adjusted according to different products. For specific methods, please refer to the method for the first target structure described above, and the embodiments of this application will not be repeated here.

[0108] In the embodiment of the present application, referring to FIG. 13 , a portion of the first dimming layer 102 located in the peripheral region 1011 d has a plurality of second grooves 102 b , and at least a portion of the second dimming layer 103 is located in the plurality of second grooves 102 b .

[0109] Since the portion of the first dimming layer 102 located in the transition area 1011b is designed with the second grooves 102b, and at least a portion of the second dimming layer 103 is located in the plurality of second grooves 102b, the second dimming layer 103 and the portion of the first dimming layer 102 located in the peripheral area 1011d can form a nested structure, thereby increasing the contact area between the second dimming layer 103 and the first dimming layer 102, thereby increasing the bonding force between the second dimming layer 103 and the first dimming layer 102, and preventing the first dimming layer 102 and the second dimming layer 103 from separating.

[0110] Optionally, referring to FIG13 , the plurality of second grooves 102 b and the plurality of second target areas 103 b correspond one to one, and the orthographic projection of each second groove 102 b on the base substrate 1011 overlaps with the orthographic projection of a corresponding second target area 103 b on the base substrate 1011. Alternatively, referring to FIG14 , the plurality of second grooves 102 b and the plurality of second target areas 103 b are staggered.

[0111] Referring to Figures 11 to 14 , it can be seen that the portion of the display substrate 101 located in the peripheral area 1011d further includes a plurality of crack blocking dams Z. The crack blocking dams Z comprise a flat pattern located in the flat layer of the display substrate 101. The crack blocking dams Z can be prepared when preparing the flat layer, for example, by patterning a flat thin film using a mask (photoresist coating, exposure, development, etching, and removal of the photoresist). The crack blocking dams Z can include a plurality of independently arranged strip structures, and their main purpose is to block the extension path of the cracks when an external force causes the cracks to propagate toward the display area 1011a, thereby protecting the display area 1011a.

[0112] Furthermore, the black matrix 1053 in the color filter layer 105 can be located in the peripheral area 1011d, and at least the portion of the black matrix 1053 located in the peripheral area 1011d is located in the plurality of second target areas 103b. In other words, the black matrix 1053 and the portion of the second dimming layer 103 located in the peripheral area 1011d can form a nested structure, thereby increasing the contact area between the second dimming layer 103 and the black matrix 1053, thereby improving the bonding strength between the second dimming layer 103 and the black matrix 1053 and preventing separation between the black matrix 1053 and the second dimming layer 103.

[0113] In the embodiment of the present application, the display substrate 101 further includes a first organic functional layer M located on one side of the base substrate 1011. The first organic functional layer M is located in the display region 1011c and the transition region 1011b. The display substrate 101 further includes a first spacer 1012, a first blocking structure 1013, and a second spacer 1014 located in the transition region 1011b and arranged in sequence away from the display region 1011c. The first organic functional layer M is broken at at least one of the first spacer 1012 and the second spacer 1014.

[0114] It should be noted that water vapor and oxygen will be transmitted along the first organic functional layer M to the display area 1011c. Since the first organic functional layer M is broken at at least one isolation column, even if water vapor and oxygen enter the first organic functional layer M from the side of the display panel located in the hole area 1011a, the water vapor and oxygen can be blocked outside the at least one isolation column and will not enter the display area 1011c along the first organic functional layer M. Furthermore, the first organic functional layer M can be broken at both the first isolation column 1012 and the second isolation column 1014, thereby further preventing water vapor and oxygen from entering the display area 1011c. As a result, the pixel unit 1012 of the display substrate 101 located in the display area 1011c can be prevented from being corroded by water vapor and oxygen, thereby ensuring the display effect.

[0115] In the embodiment of the present application, the material of the first organic functional layer M can be an organic material, which easily absorbs water and oxygen. Therefore, water vapor and oxygen can enter the display substrate 101 through the first organic functional layer M located on the side of the hole area 1011a of the display substrate 101. By breaking the first organic functional layer M at at least one of the first isolation pillars 1012 and the second isolation pillars 1014, water vapor and oxygen can be prevented from entering the display area 1011c along the first organic functional layer M.

[0116] Optionally, both the first isolation pillar 1012 and the second isolation pillar 1014 may be ring-shaped structures surrounding the hole region 1011a. The display substrate 101 may include multiple first isolation pillars 1012 and multiple second isolation pillars 1014. For example, in FIG1 , the display substrate 101 may include two first isolation pillars 1012 and two second isolation pillars 1014.

[0117] In the embodiment of the present application, the display substrate 101 further includes a first blocking structure 1015 located in the peripheral region 1011d. The second blocking structure 1015 can be used to block the overflow of the organic material located in the display region 1011a.

[0118] In an embodiment of the present application, referring to FIG10 , the display substrate 101 includes: a buffer layer (buffer) n1, an active layer n2, a first gate insulating layer 1062 (gate insulator, GI) n3, a first gate layer n4, a second gate insulating layer n5, a second gate layer n6, an inter-level dielectric layer (inter-level dielectric, ILD) n7, a first source and drain layer n8, a first planarization layer (planarization layer, PLN) n9, a second source and drain layer n10, a second planarization layer n11, an anode layer (anode) n12, a pixel definition layer (pixel definition layer, PDL) n13, a supporting layer (PS) n14, a light-emitting film layer n15, a cathode layer (cathode) n16, and an encapsulation film layer n17, which are stacked in sequence along a direction away from the base substrate 1011.

[0119] Among them, the first gate layer n4, the second gate layer n6, the first source and drain layer n8, the first planar layer n9, the second source and drain layer n10 and the second planar layer n11 are located in the display area 1011c, and the first gate insulating layer n3, the second gate insulating layer n5 and the interlayer dielectric layer n7 are located in the transition area 1011b and the display area 1011c.

[0120] In the embodiment of the present application, both the first spacer 1012 and the second spacer 1014 include a target film layer H. The target film layer H is located on the first source / drain electrode layer n8, and its orthographic projection on the reference plane is in the shape of an I. By configuring the target film layer H in the first spacer 1012 and the second spacer 1014 in the shape of an I, the first organic functional layer M can be easily broken at the first spacer 1012 and the second spacer 1014, thereby preventing moisture and oxygen from entering the display area 1011c.

[0121] Optionally, referring to FIG15 , the target film layer H includes a first metal layer H1, a second metal layer H2, and a third metal layer H3 stacked sequentially in a direction away from the base substrate 1011. The etching rate of the second metal layer H2 is greater than the etching rate of the first metal layer H1, and greater than the etching rate of the third metal layer H3.

[0122] In the embodiment of the present application, since the etching rate of the second metal layer H2 is relatively high, while the etching rates of the first metal layer H1 and the third metal layer H3 are relatively low, the target film layer H can be made into an I-shape based on the difference in etching rates of the various metal layers.

[0123] For example, assuming that the target film layer H and the first source and drain layer n8 are located in the same layer, since the first source and drain layer n8 is usually composed of three stacked metal layers of titanium (Ti), aluminum (Al) and titanium, the materials of the first metal layer H1 and the third metal layer H3 in the target film layer H can both be titanium, and the material of the second metal layer H2 can be aluminum.

[0124] In an embodiment of the present application, the first isolation column 1012 and the second isolation column 1014 may include other film layers in addition to the target film layer H. For example, the first isolation column 1012 and the second isolation column 1014 both include a gate pattern located on the same layer as the first gate layer n4, and a gate pattern located on the same layer as the second gate layer n6.

[0125] In the embodiment of the present application, the film layers included in each isolation column included in the display substrate 101 can be different. Of course, the film layers included in each isolation column included in the display substrate 101 can also be the same. This embodiment of the present application is not limited to this. Regardless of the film layers included in each isolation column in the display substrate 101, it is sufficient to ensure that the first organic functional layer M is broken at at least one isolation column in the display substrate 101.

[0126] In the embodiment of the present application, each pixel unit 1012 located in the display area 1011c of the display substrate 101 may include a pixel circuit and a light-emitting unit. The pixel circuit may include a storage capacitor and at least one thin film transistor.

[0127] Optionally, the active layer n2 may include multiple active patterns. The first gate layer n4 may include multiple first gate patterns. The second gate layer n6 may include multiple second gate patterns. The first source-drain layer n8 may include multiple source electrodes and multiple drain electrodes corresponding to the multiple source electrodes. The second source-drain layer n10 may include multiple connection patterns.

[0128] An active pattern, a first gate pattern, a source electrode, and a drain electrode can constitute a thin film transistor, and the source electrode and the corresponding drain electrode of each thin film transistor can be connected to the active pattern. A first gate pattern and a second gate pattern can constitute a storage capacitor.

[0129] Referring to Figure 10 , the display substrate 101 includes an anode layer n12, a light-emitting film layer n15, and a cathode layer n16, which can constitute the light-emitting units of multiple pixel units 1012. The anode layer n12 can include multiple anode patterns. The light-emitting film layer n15 can include a first organic functional layer M, a second organic functional layer, and a light-emitting pattern (only the light-emitting pattern is shown in the figure to represent the light-emitting film layer n15). The anode layer n12, the second organic functional layer, and the light-emitting pattern are all located in the display area 1011c, and the cathode layer n16 is located in the transition area 1011b and the display area 1011c.

[0130] The anode layer n12, the second organic functional layer, and the light-emitting pattern are all located in the display region 1011c, which may mean that the anode layer n12, the second organic functional layer, and the light-emitting pattern are located only in the display region 1011c and not in the transition region 1011b. The first organic functional layer M may include at least a hole transport layer and an electron transport layer, and the second organic functional layer may include at least a hole injection layer and an electron injection layer.

[0131] 10 , the pixel defining layer n13 included in the display substrate 101 may have multiple hollow regions, each of which may be used to expose the anode pattern of a pixel unit 1012. The anode pattern of each pixel unit 1012 is connected to the drain of the thin film transistor via a connection pattern.

[0132] In the embodiment of the present application, the encapsulation film layer n17 may include a first inorganic encapsulation layer n171, an organic encapsulation layer n172, and a second inorganic encapsulation layer n173 stacked in sequence. The first inorganic encapsulation layer n171 and the second inorganic encapsulation layer n173 are both located in the display area 1011c, the peripheral area 1011d, and the transition area 1011b. The organic encapsulation layer n172 is located on the side of the first blocking structure 1013 closer to the display area 1011c.

[0133] Since the material of the organic encapsulation layer n172 can be an organic material, the organic encapsulation layer n172 is not located in the peripheral area 1011d and the transition area, which can prevent water vapor and oxygen from entering the display area 1011c from the organic encapsulation layer n172, thereby ensuring the encapsulation effect.

[0134] Optionally, the material of the first inorganic encapsulation layer n171 is silicon oxynitride (SiNO), and the material of the second inorganic encapsulation layer n173 is silicon nitride (SiN). The organic encapsulation layer n172 is made of a resin material. The resin can be a thermoplastic resin or a thermoplastic resin. The thermoplastic resin can include acrylic (PMMA) resin, and the thermosetting resin can include epoxy resin.

[0135] Optionally, the first inorganic encapsulation layer n171 and the second inorganic encapsulation layer n173 may be manufactured by chemical vapor deposition (CVD), and the organic encapsulation layer n172 may be manufactured by ink jet printing (IJP).

[0136] In the embodiment of the present application, referring to FIG1 , the first blocking structure 1013 may include a first blocking dam 10131. The first blocking dam 10131 may include a first pattern t1 and a second pattern t2 stacked sequentially along a side away from the base substrate 1011. The first pattern t1 is located in the second planar layer, and the second pattern t2 is located in the pixel defining layer n13.

[0137] Of course, the first blocking structure 1013 may include a first blocking dam 10131 and a second blocking dam (not shown) arranged in a direction close to the hole region 1011a. Optionally, the height of the first blocking dam 10131 and the height of the second blocking dam may be equal. For example, the first blocking dam 10131 and the second blocking dam each include a pattern of the second planar layer and a pattern of the pixel defining layer n13. Of course, the height of the first blocking dam 10131 and the height of the second blocking dam may also be unequal, and this embodiment of the present application is not limited thereto.

[0138] 11 , the first barrier structure 1015 may include a third barrier dam 10151. The third barrier dam 10151 may include a third pattern t3 and a fourth pattern t4 sequentially stacked along a side away from the base substrate 1011. The third pattern t3 is located in the second planar layer, and the fourth pattern t4 is located in the pixel defining layer n13.

[0139] Of course, the second barrier structure 1015 may include a third barrier dam 10151 and a fourth barrier dam (not shown) arranged in a direction away from the display area 1011a. Optionally, the height of the third barrier dam 10151 may be greater than the height of the fourth barrier dam. Of course, the height of the third barrier dam 10151 and the height of the fourth barrier dam may also be equal, which is not limited in this embodiment of the present application.

[0140] In the embodiment of the present application, referring to FIG10 , the display panel 10 further includes a touch substrate 106 located in the display area 1011 a. The touch substrate 106 includes a first touch electrode layer 1061 , an insulating layer 1062 , and a second touch electrode layer 1063 , which are stacked sequentially on the light-emitting side of the display substrate 101 .

[0141] One of the first touch electrode layer 1061 and the second touch electrode layer 1063 includes a plurality of bridging electrodes s12 for the first touch electrodes s1, and the other of the first touch electrode layer 1061 and the second touch electrode layer 1063 includes a plurality of main electrodes s11 for the first touch electrodes s1 and a plurality of second touch electrodes s2. The bridging electrodes and the main electrodes are electrically connected via vias in the insulating layer 1062. The insulating layer 1062 can be made of an organic material to facilitate bending of the display panel 10. Alternatively, the insulating layer 1062 can be made of an inorganic material.

[0142] Optionally, referring to FIG16 , the bridging electrodes of the plurality of first touch electrodes s1 are located in the first touch electrode layer 1061, and the plurality of main electrodes s11 of the first touch electrodes s1 and the plurality of second touch electrodes s2 are located in the second touch electrode layer 1063. Alternatively, the main electrodes s11 of the plurality of first touch electrodes s1 and the plurality of second touch electrodes s2 are located in the first touch electrode layer 1061, and the bridging electrodes s12 of the plurality of first touch electrodes s1 are located in the second touch electrode layer 1063.

[0143] Furthermore, the touch substrate 106 may further include a driving circuit and a detection circuit located in the peripheral area 1011d. The driving circuit is electrically connected to the plurality of first touch electrodes s1 and is configured to provide driving signals to the first touch electrodes s1. The detection circuit is electrically connected to the second touch electrodes s2 and is configured to detect sensing signals received from the second touch electrodes s2 between the first touch electrodes s1 and the second touch electrodes s2.

[0144] While the driving circuit provides a driving signal to the first touch electrode s1, the detection circuit can detect the sensing signal between the first touch electrode s1 and the second touch electrode s2 received from the second touch electrode s2. If a user's finger approaches the display panel, the detection circuit 1025 can detect a change in the sensing signal at the location of the user's finger and determine the location where the sensing signal changed as the touch location.

[0145] Optionally, since the driving circuit is electrically connected to the first touch electrode s1, the first touch electrode s1 may be a transmitting (TX) electrode, and since the detecting circuit is electrically connected to the second touch electrode s2, the second touch electrode s2 may be a sensing (RX) electrode.

[0146] In the embodiment of the present application, referring to FIG. 10 , the portion of the first dimming layer 102 located in the display area 1011 a may entirely cover the side of the touch substrate 106 away from the display substrate, thereby protecting the second touch electrode layer 1063 in the touch substrate 106 .

[0147] Furthermore, referring to FIG10 , the portion of the first dimming layer 102 located in the display area 1011a, which is away from the surface of the display substrate 101, has a groove structure U. The angle between the extended surface of the sidewall of the groove structure U and the supporting surface of the base substrate 1011 is an acute angle or an obtuse angle. In other words, the extended surface of the sidewall of the groove structure U is inclined relative to the supporting surface of the base substrate 1011. By setting the refractive index of the first dimming layer 102 to be lower than the refractive index of the second dimming layer 103, the side surface of the groove structure U can refract and converge light. In other words, the light emitted by the pixel unit 1012 can be converged after being refracted by the side surface of the groove structure U.

[0148] 10 , the orthographic projection of the groove structure U on the display substrate 101 is located in the non-luminous area of ​​the pixel unit 1012. The depth of the groove structure U is less than the thickness of the first dimming layer 102.

[0149] In this embodiment, the portion of the first dimming layer 102 located in the display area 1011a, away from the display substrate, has a raised structure. The orthographic projection of the raised structure T on the display substrate 101 is located in the light-emitting area of ​​the pixel unit 1012. The side surface of the groove structure U may refer to the interface between the groove structure U and the raised structure T.

[0150] 10 , the shape of the protrusion structure T may be approximately trapezoidal, where the approximately trapezoidal may refer to a standard trapezoid or a non-standard trapezoid with a curved surface due to process reasons.

[0151] Solution 2, referring to Figure 17, the orthographic projection of the groove structure U on the display substrate 101 is located in the non-luminous area of ​​the pixel unit 1012. The depth of the groove structure is equal to the thickness of the first dimming layer.

[0152] In this solution, the first dimming layer 102 includes a plurality of dimming structures G spaced apart. The orthographic projection of the dimming structure G on the display substrate 1011 is located in the light emitting area of ​​the pixel unit 1012. The side of the groove structure U may refer to the interface between the groove structure U and the dimming structure G.

[0153] 17 , the shape of the dimming structure G may be approximately trapezoidal, and the approximately trapezoidal may refer to a standard trapezoid or a non-standard trapezoid with a curved surface due to process reasons.

[0154] In the third solution, referring to FIG18 , the orthographic projection of the groove structure U on the display substrate 1011 is located in the light-emitting area of ​​the pixel unit 1012. The depth of the groove structure U is less than or equal to the thickness of the first dimming layer 102. FIG18 uses the example where the depth of the groove structure U is less than the thickness of the first dimming layer 102.

[0155] 18 , the shape of the groove structure U may be approximately trapezoidal, where the approximately trapezoidal may refer to a standard trapezoid or a non-standard trapezoid with a curved surface due to process reasons.

[0156] 1 , 3 , 7 to 14 and 17 to 18 , the display panel 10 further includes a cover plate 107, which may be located on a side of the second dimming layer 103 away from the display substrate 101. The cover plate 107 may be a glass cover plate.

[0157] In the embodiment of the present application, the base substrate 1011 may be a glass substrate. Alternatively, the base substrate 1011 may be a flexible substrate. Referring to FIG1 , if the base substrate 1011 is a flexible substrate, the base substrate 1011 includes a first organic layer 10111, a barrier layer 10112, and a second organic layer 10113 stacked in sequence. The first organic layer 10111 and the second organic layer 10113 may be made of polyimide (PI).

[0158] The cutting path shown in FIG1 may be located between the hole area 1011a and the transition area 1011b, and may refer to the cutting area reserved for cutting to form the hole area 1011a. The cutting path shown in FIG11 may be located on a side of the peripheral area 1011d away from the display area 1011a, and may refer to the cutting area reserved for cutting to form the edge of the display panel.

[0159] In summary, an embodiment of the present application provides a display panel, in which a display substrate includes a base substrate, a plurality of pixel units, a first dimming layer, and a second dimming layer. The refractive index of the first dimming layer is different from the refractive index of the second dimming layer, thereby achieving the effect of converging the light emitted by the pixel unit, so as to increase the amount of forward light emitted by the pixel unit and improve the display effect of the display panel. Moreover, since the thickness of the portion of the second dimming layer located in the first target area of ​​the transition region is relatively small, expansion space can be provided for the material expansion of the second dimming layer, thereby reducing the total expansion of the second dimming layer. In this way, the expansion of the second dimming layer can be avoided to be too large, thereby reducing the possibility of warping of the display panel, thereby reducing the possibility of separation of the film layer in the display panel, and improving the yield of the display panel.

[0160] FIG19 is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Referring to FIG19 , the display device may include: a power supply component 20 and the display panel 10 provided in the above embodiment. The power supply component 20 may be used to supply power to the display panel 10.

[0161] Optionally, the display device can be an OLED display device, a quantum dot light emitting diode (QLED) display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame or a navigator, or any other product or component with a display function and a fingerprint recognition function.

[0162] For example, the display device is an active-matrix organic light emitting diode (AMOLED) display panel.

[0163] Since the display device can have substantially the same technical effects as the display panel described in the previous embodiment, the technical effects of the display device will not be repeatedly described here for the purpose of brevity.

[0164] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises: a display substrate; the display substrate comprises: A base substrate having a hole area, a transition area surrounding the hole area, a display area surrounding the transition area, and a peripheral area surrounding the display area; and, a plurality of pixel units located on one side of the base substrate, the plurality of pixel units being located in the display area; The display panel further includes: a first dimming layer and a second dimming layer which are located on a side of the plurality of pixel units away from the base substrate and are stacked in sequence; The first dimming layer and the second dimming layer are located in the display area and the transition area, the refractive index of the first dimming layer is different from the refractive index of the second dimming layer, the portion of the second dimming layer located in the transition area has multiple first target areas, and the thickness of the portion of the second dimming layer located in the first target area is less than the thickness of the portion of the second dimming layer located in other areas of the transition area except the first target area.

2. The display panel according to claim 1, characterized in that: The structure of the second dimming layer located in the first target area is a groove; or, the structure of the second dimming layer located in the first target area is a through hole.

3. The display panel according to claim 2, characterized in that: The orthographic projection of each of the first target areas on the substrate is annular, and the orthographic projection of the first target area on the substrate surrounds the hole area; There is a gap between any two adjacent first target areas among the plurality of first target areas, and the orthographic projection of the gap on the substrate is annular.

4. The display panel according to claim 2, characterized in that: The orthographic projection of each first target area on the substrate is in the shape of a strip, and the extension direction of each first target area is the arrangement direction of the hole area and the transition area; The plurality of first target areas are evenly arranged around the hole area.

5. The display panel according to claim 2, characterized in that: The plurality of first target areas include: a plurality of first sub-areas and a plurality of second sub-areas, the plurality of first sub-areas being closer to the hole area than the plurality of second sub-areas; The plurality of first sub-regions are evenly arranged in a ring-shaped manner, and the orthographic projection of the arrangement direction of the plurality of first sub-regions on the substrate surrounds the hole region; The plurality of second sub-regions are evenly arranged in a ring-like manner, and the orthographic projections of the arrangement directions of the plurality of second sub-regions on the substrate surround the orthographic projections of the plurality of first sub-regions on the substrate; Wherein, the plurality of first sub-regions and the plurality of second sub-regions are arranged in a staggered manner.

6. The display panel according to claim 5, characterized in that: The shapes of the orthographic projection of the first sub-region on the substrate and the orthographic projection of the second sub-region on the substrate are both trapezoidal, circular, semicircular, arc, triangle, rectangle, hexagon or octagonal.

7. The display panel according to any one of claims 1 to 6, characterized in that: A portion of the first dimming layer located in the transition region has a plurality of first grooves, and at least a portion of the second dimming layer is located in the plurality of first grooves.

8. The display panel according to claim 7, characterized in that: The plurality of first grooves correspond to the plurality of first target regions one by one, and an orthographic projection of each of the first grooves on the base substrate overlaps with an orthographic projection of a corresponding first target region on the base substrate.

9. The display panel according to claim 7, characterized in that: The plurality of first grooves and the plurality of first target areas are staggered.

10. The display panel according to any one of claims 1 to 9, characterized in that: The display panel further comprises: a color filter layer located on a side of the second dimming layer away from the base substrate; The color filter layer includes a plurality of color blocking blocks located in the display area, a plurality of dummy color blocking blocks located in the transition area, and a black matrix located in the display area and the transition area; The black matrix has a plurality of openings, each opening is used to expose a corresponding color resist block, and the orthographic projection of each color resist block on the base substrate covers the light emitting area of ​​a corresponding pixel unit.

11. The display panel according to claim 10, characterized in that: The structure of the second dimming layer located in the first target area is a groove or a through hole; At least a portion of the black matrix located in the transition region is located in the plurality of first target regions.

12. The display panel according to any one of claims 1 to 11, characterized in that: The first dimming layer and the second dimming layer are also located in the peripheral area; the portion of the second dimming layer located in the peripheral area has multiple second target areas, and the thickness of the portion of the second dimming layer located in the second target area is less than the thickness of the portion of the second dimming layer located in other areas of the peripheral area except the second target area.

13. The display panel according to claim 12, characterized in that: The structure of the second dimming layer located in the second target area is a groove; or, the structure of the second dimming layer located in the second target area is a through hole.

14. The display panel according to claim 12, characterized in that: The portion of the first dimming layer located in the peripheral area has a plurality of second grooves, and at least a portion of the second dimming layer is located in the plurality of second grooves.

15. The display panel according to claim 12, characterized in that: The structure of the second dimming layer located in the second target area is a groove or a through hole; the black matrix in the color filter layer included in the display panel is also located in the peripheral area; At least a portion of the black matrix located in the peripheral area is located in the plurality of second target areas.

16. The display panel according to any one of claims 1 to 15, characterized in that: The refractive index of the first dimming layer is less than the refractive index of the second dimming layer; The surface of the first dimming layer located in the display area away from the display substrate has a groove structure, and the angle between the extended surface of the side of the groove structure and the supporting surface of the base substrate is The sidewall of the groove structure is used to converge light, either at an acute angle or an obtuse angle.

17. The display panel according to claim 16, characterized in that: The orthographic projection of the groove structure on the display substrate is located in the non-luminous area of ​​the pixel unit; the depth of the groove structure is less than the thickness of the first dimming layer; The portion of the first dimming layer located in the display area and away from the surface of the display substrate has a convex structure, and the orthographic projection of the convex structure on the display substrate is located in the light-emitting area of ​​the pixel unit; The side surface of the groove structure is the interface between the groove structure and the protrusion structure.

18. The display panel according to claim 16, characterized in that: The orthographic projection of the groove structure on the display substrate is located in the non-luminous area of ​​the pixel unit; the depth of the groove structure is less than the thickness of the first dimming layer; The first dimming layer includes a plurality of dimming structures arranged at intervals, and the orthographic projections of the dimming structures on the display substrate are located in the light-emitting area of ​​the pixel unit; The side surface of the groove structure is the interface between the groove structure and the dimming structure.

19. The display panel according to claim 16, characterized in that: The orthographic projection of the groove structure on the display substrate is located in the light-emitting area of ​​the pixel unit; the depth of the groove structure is less than or equal to the thickness of the first dimming layer.

20. A display device, characterized in that: The display device comprises: a power supply component and a display panel according to any one of claims 1 to 19; Wherein, the power supply component is used to supply power to the display panel.

Images