Display panel and display device

Abstract

The present application relates to the technical field of display, and discloses a display panel and a display device. The display panel comprises a display substrate, a first dimming layer and a second dimming layer, and the display substrate comprises a base substrate and a plurality of pixel units. 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 improving the amount of light emitted by the pixel units in the forward direction, and improving the display effect of the display panel. Moreover, the distance between a first boundary of a first target part, which is located in a display area and a transition area, has a continuous film layer, and is comprised in the second dimming layer, and a hole area is large, and therefore, the influence of the pulling force generated by the expansion of the first target part of the second dimming layer on the hole area can be reduced. Therefore, the possibility of film layer peeling in the display panel can be reduced, and the yield of the display panels is improved.

Description

Display panel and display device

[0001] This disclosure claims priority to Chinese patent application No. 202311568594.1 filed on November 22, 2023, entitled “Display Panel and Display Device.” The entire contents of the above case are incorporated herein by reference. 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, and a display area surrounding the transition 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, the first dimming layer and the second dimming layer having different refractive indices, and the first dimming layer and the second dimming layer being located at least in the display area;

[0010] The second dimming layer includes a first target portion located in the display area and the transition area and having a continuous film layer. The first target portion is located in the transition area near the first boundary of the hole area, and the distance between the first boundary and the display area is smaller than the distance between the first boundary and the hole area.

[0011] Optionally, the first dimming layer includes a second target portion located in the transition area and having a continuous film layer, the second target portion is located in the transition area near the second boundary of the hole area, and the distance between the second boundary and the display area is smaller than the distance between the second boundary and the hole area.

[0012] Optionally, the second boundary is farther away from the display area than the first boundary, and the orthographic projection of the first boundary on the substrate is located within the orthographic projection of the second target portion on the substrate; or

[0013] The first boundary is farther away from the display area than the second boundary, and an orthographic projection of the first target portion on the base substrate covers an orthographic projection of the second boundary on the base substrate.

[0014] Optionally, the display panel further includes: a color filter layer and a first planar film layer located between the display substrate and the first dimming layer and stacked in a direction away from the display substrate;

[0015] The color filter layer includes a plurality of color resist blocks located in the display area and a black matrix located in the display area. The orthographic projections of the color resist blocks on the base substrate overlap with the orthographic projections of the light-emitting areas of the pixel units on the base substrate. Light emitted by the pixel units passes through the color resist blocks and then exits. The orthographic projections of the black matrix on the base substrate are located between the light-emitting areas of adjacent pixel units.

[0016] The first flat film layer includes a third target portion located in the display area and the transition area and the film layer is continuous. The third target portion is located in the transition area near the third boundary of the hole area, and the distance between the third boundary and the display area is smaller than the distance between the third boundary and the hole area.

[0017] Optionally, the second boundary is further away from the display area than the first boundary, and the third boundary is further away from the display area than the second boundary;

[0018] The orthographic projection of the first boundary on the substrate is located within the orthographic projection of the second target portion on the substrate, and the orthographic projection of the second boundary on the substrate is located within the orthographic projection of the third target portion on the substrate.

[0019] Optionally, the second boundary is farther away from the display area than the third boundary, and the first boundary is farther away from the display area than the second boundary;

[0020] The orthographic projection of the first target portion on the substrate covers the orthographic projection of the second boundary on the substrate, and the orthographic projection of the second target portion on the substrate covers the orthographic projection of the third boundary on the substrate.

[0021] Optionally, the second boundary is further away from the display area than the third boundary, and the first boundary is further away from the display area than the third boundary;

[0022] The orthographic projection of the second boundary on the substrate is located at the orthographic projection of the third target part on the substrate, and the orthographic projection of the first target part on the substrate covers the orthographic projection of the second boundary on the substrate and covers the orthographic projection of the third boundary on the substrate.

[0023] Optionally, the second dimming layer further includes a plurality of first dimming island patterns located in the transition region and evenly spaced apart;

[0024] The plurality of first dimming island patterns are close to the hole area relative to the first target portion, and there is a gap between any of the first dimming island patterns and the first target portion.

[0025] Optionally, the first dimming layer includes a second target portion located in the transition region and having a continuous film layer, and the second target portion is located in the transition region near a second boundary of the hole area;

[0026] The second boundary is farther away from the display area than the plurality of first dimming island patterns, and the orthographic projections of the plurality of first dimming island patterns on the base substrate are located within the orthographic projection of the second target portion on the base substrate.

[0027] Optionally, the first dimming layer includes a second target portion located in the transition region and having a continuous film layer, the second target portion being located in the transition region near a second boundary of the hole area; the second boundary is farther away from the display area than the first boundary, and an orthographic projection of the first boundary on the base substrate is located within an orthographic projection of the second target portion on the base substrate;

[0028] The first dimming layer further includes a plurality of second dimming island patterns located in the transition region and evenly spaced apart. The plurality of second dimming island patterns are further away from the display region relative to the second target portion, and there is a gap between any second dimming island pattern and the second target portion.

[0029] Optionally, the display panel further includes: a first planar film layer located between the display substrate and the first dimming layer; the material of the first dimming layer is different from that of the first planar film layer;

[0030] The portion where the orthographic projection of the first flat film layer on the base substrate, the orthographic projection of the first target portion on the base substrate, and the orthographic projection of the second target portion on the base substrate do not overlap has a plurality of island-shaped grooves that are spaced and evenly arranged;

[0031] The first dimming layer includes a plurality of third dimming island patterns corresponding to the plurality of island-shaped grooves, and each of the third dimming island patterns is located in a corresponding one of the island-shaped grooves.

[0032] Optionally, the second dimming layer further includes a plurality of first dimming ring patterns located in the transition region and spaced apart, wherein the orthographic projections of the first dimming ring patterns on the base substrate surround the hole region and are further away from the display region than the first target portion; and there is a space between any of the first dimming ring patterns and the first target portion.

[0033] The first dimming layer further includes a plurality of second dimming ring patterns located in the transition region and spaced apart, wherein the orthographic projections of the second dimming ring patterns on the base substrate surround the hole region and are further away from the display region than the second target portion; and there is a space between any of the second dimming ring patterns and the second target portion;

[0034] The plurality of first dimming ring patterns and the plurality of second dimming ring patterns are arranged alternately.

[0035] Optionally, the first dimming layer includes a plurality of strip-shaped grooves located in the transition area, and the plurality of strip-shaped grooves are evenly arranged around the hole area;

[0036] The second dimming layer includes a plurality of dimming strip patterns corresponding to the plurality of strip grooves, and each of the dimming strip patterns is located in a corresponding one of the strip grooves.

[0037] Optionally, the display substrate further comprises: a first organic functional layer located on one side of the base substrate, the first organic functional layer being located in the display region and the transition region; the display substrate further comprises: a first spacer, a first blocking structure, and a second spacer located in the transition region and sequentially arranged in a direction away from the display region;

[0038] The first organic functional layer is broken at at least one of the first isolation column and the second isolation column.

[0039] Optionally, the display substrate includes: a buffer layer, an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source and drain electrode layer, a first planarization layer, a second source and drain electrode layer, a second planarization layer, an anode layer, a pixel defining layer, a support layer, a light-emitting film layer, a cathode layer, and an encapsulation film layer, which are sequentially stacked in a direction away from the base substrate;

[0040] The light-emitting film layer includes the first organic functional layer, the second organic functional layer and the light-emitting pattern, the first organic functional layer includes at least a hole transport layer and an electron transport layer, and the second organic functional layer includes at least a hole injection layer and an electron injection layer;

[0041] The encapsulation film layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked in sequence. The first inorganic encapsulation layer and the second inorganic encapsulation layer are located in the display area, the peripheral area, and the transition area. The organic encapsulation layer is located on a side of the first blocking structure close to the display area.

[0042] Optionally, both the first isolation column and the second isolation column include at least a target film layer;

[0043] The target film layer is located in the first source and drain electrode layer, and the orthographic projection of the target film layer on the reference plane is in an I-shape, and the reference plane is perpendicular to the supporting surface of the base substrate.

[0044] Optionally, the display substrate includes a plurality of second isolation columns;

[0045] A distance between an orthographic projection of the first boundary on the base substrate and an orthographic projection of a center line of a second isolation column closest to the display area among the plurality of second isolation columns on the base substrate is greater than or equal to 100 micrometers.

[0046] Optionally, the display panel further includes: a touch substrate and a second flat film layer located between the display substrate and the first dimming layer and stacked in a direction away from the display substrate;

[0047] The touch substrate comprises a first touch electrode layer, a touch insulating layer and a second touch electrode layer stacked in sequence;

[0048] One of the first touch electrode layer and the second touch electrode layer includes a bridge electrode of multiple first touch electrodes, and the other touch electrode layer of the first touch electrode layer and the second touch electrode layer includes a main electrode of the multiple first touch electrodes and a multiple second touch electrodes, and the bridge electrode and the main electrode are electrically connected through vias in the touch insulation layer.

[0049] Optionally, the second flat film layer includes a fourth target portion located in the display area and the transition area and the film layer is continuous, the fourth target portion is located in the transition area near the fourth boundary of the hole area, and the distance between the fourth boundary and the display area is smaller than the distance between the fourth boundary and the hole area.

[0050] On the other hand, a display device is provided, comprising: a power supply component and the display panel according to the above aspect;

[0051] Wherein, the power supply component is used to supply power to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] 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.

[0053] FIG1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;

[0054] FIG2 is a top view of a substrate provided in an embodiment of the present application;

[0055] FIG3 is a schematic structural diagram of a display panel located in a display area according to an embodiment of the present application;

[0056] FIG4 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0057] FIG5 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0058] FIG6 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0059] FIG7 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0060] FIG8 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0061] FIG9 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0062] FIG10 is a top view of a display panel located in a transition area provided by an embodiment of the present application;

[0063] FIG11 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0064] FIG12 is a top view of another display panel located in a transition area provided by an embodiment of the present application;

[0065] FIG13 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0066] FIG14 is a top view of a partial structure of a display panel located in a transition area provided by an embodiment of the present application;

[0067] FIG15 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0068] FIG16 is a top view of another display panel located in a transition area provided by an embodiment of the present application;

[0069] FIG17 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0070] FIG18 is a schematic diagram of a partial structure of a target film layer and a first organic functional layer provided in an embodiment of the present application;

[0071] FIG19 is a partial schematic diagram of a touch substrate provided in an embodiment of the present application;

[0072] FIG20 is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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 .

[0077] Figure 2 is a top view of a base substrate provided by an embodiment of the present application. Referring to Figures 1 and 2 , the base substrate 1011 has a hole area 1011a, a transition area 1011b surrounding the hole area 1011a, and a display area 1011c surrounding the transition area 1011b.

[0078] FIG3 is a schematic diagram of the structure of a display panel provided by an embodiment of the present application, located in the display area. In conjunction with FIG1 to FIG3 , a plurality of pixel units 1012 are located on one side of a base substrate 1011 and in the display area 1011c. The plurality of 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 plurality of pixel units 1012 away from the base substrate 1011 and are stacked sequentially in a direction away from the base substrate 1011. The first dimming layer 102 and the second dimming layer 103 are located at least in the display area 1011c. Furthermore, the portions 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 units 1012, thereby increasing the light output of the pixel units 1012, increasing the luminance of the display panel 10, and improving the display effect. Optionally, the materials of the first dimming layer 102 and the second dimming layer 103 can both be optical adhesive (OC).

[0079] 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.

[0080] During the entire preparation process of the display panel 10, after the second dimming layer 103 is prepared, in the subsequent preparation process of other film layers, the entire structure may also 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 and generation of pulling force) 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.

[0081] Typically, the pulling force generated by the second dimming layer 103 easily causes the film layer in the display panel 10 to separate (peeling). Moreover, if the film layer separates, it is more likely that water vapor or oxygen will intrude into 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, poor display quality, and in severe cases, product scrapping. Furthermore, due to the physical property changes of the second dimming layer 103, the portion of the film layer in the display substrate 101 located in the transition region 1011b near the hole region 1011a is more likely to separate (peeling), and the sidewalls of the hole region 1011a are exposed. Therefore, water vapor and oxygen are more likely to intrude into the display area 1011c from the sidewalls of the hole region 1011a through the transition region 1011b. Therefore, in order to ensure the display effect of the display panel, the portion of the second dimming layer 103 located in the transition area 1011b needs to be specially designed to prevent the display panel from warping, thereby preventing film separation from causing water vapor and oxygen intrusion.

[0082] In the embodiment of the present application, the second dimming layer 103 includes a first target portion 1031 located in the display area 1011c and the transition area 1011b, with a continuous film layer. The first target portion 1031 is located in the transition area 1011b, near a first boundary 1031a of the aperture region 1011a. The distance between the first boundary 1031a and the display area 1011c is smaller than the distance between the first boundary 1031a and the aperture region 1011a. In other words, the first boundary 1031a of the first target portion 1031 in the second dimming layer 103, with a continuous film layer, is closer to the display area 1011c than the aperture region 1011a. This allows the first target portion 1031 to be farther from the aperture region 1011a, and the tensile force generated by the expansion of the first target portion 1031 has a smaller influence on the aperture region 1011a.

[0083] Therefore, during the subsequent high temperature or high humidity process of forming the display panel 10, even if the second dimming layer 103 expands and generates a pulling force, it will not have much impact on the hole area 1011a, thereby reducing the possibility of film layer separation in the display panel 10 and improving the yield of the display panel 10.

[0084] In summary, an embodiment of the present application provides a display panel, which includes a display substrate, a first dimming layer and a second dimming layer, and the display substrate includes a base substrate and a plurality of pixel units. 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. In addition, since the distance between the first boundary of the first target portion of the second dimming layer, which is located in the display area and the transition area and has a continuous film layer, and the hole area is large, the influence of the pulling force generated by the expansion of the first target portion of the second dimming layer on the hole area can be reduced. In this way, the possibility of film separation in the display panel can be reduced, and the yield of the display panel can be improved.

[0085] 4 , the first dimming layer 102 includes a second target portion 1021 located in the transition region 1011b and having a continuous film layer. The second target portion 1021 is located in the transition region 1011b near a second boundary 1021a of the aperture region 1011a. The distance between the second boundary 1021a and the display region 1011c is smaller than the distance between the second boundary 1021a and the aperture region 1011a.

[0086] Because the first dimming layer 102 is located between the second dimming layer 103 and the display substrate 101, the first dimming layer 102 can serve as an intermediate transmission layer for the pulling force generated by the second dimming layer 103, thereby transmitting the pulling force generated by the second dimming layer 103 to the display substrate 101. Therefore, by designing a larger distance between the second boundary 1021a of the second target portion 1021 of the first dimming layer 102 and the hole region 1011a, the effect of the first dimming layer 102 acting as an intermediate transmission layer for transmitting the pulling force can be reduced, further reducing the possibility of film separation and improving the yield of the display panel 10.

[0087] 4 , the second boundary 1021a is further away from the display area 1011c than the first boundary 1031a, and the orthographic projection of the first boundary 1031a on the base substrate 1011 is located within the orthographic projection of the second target portion 1021 on the base substrate 1011. Alternatively, referring to FIG5 , the first boundary 1031a is further away from the display area 1011c than the second boundary 1021a, and the orthographic projection of the first target portion 1031 on the base substrate 1011 covers the orthographic projection of the second boundary 1021a on the base substrate 1011.

[0088] Optionally, in Figures 4 and 5 , the distance h1 between the first boundary 1031a and the second boundary 1021a may be greater than or equal to 10 μm (micrometers). That is, in Figure 4 , the first target portion 1031 is retracted by at least 10 μm relative to the second target portion 1021 in a direction away from the hole region 1011a. In Figure 5 , the first target portion 1031 is wrapped by at least 10 μm relative to the second target portion 1021 in a direction toward the hole region 1011a.

[0089] 3 , the display panel 10 further includes a color filter layer 104 and a first planar film layer 105 located between the display substrate 101 and the first dimming layer 102 and stacked in a direction away from the display substrate 101 .

[0090] The color filter layer 104 includes a plurality of color resist blocks 1041 located in the display area 1011c and a black matrix 1042 located in the display area 1011c. The orthographic projections of the color resist blocks 1041 on the base substrate 1011 overlap with the light-emitting areas of the pixel units 1012. Light emitted by the pixel units 1012 passes through the color resist blocks 1041 before exiting. The orthographic projections of the black matrix 1042 on the base substrate 1011 are located between the light-emitting areas of adjacent pixel units 1012.

[0091] Optionally, the black matrix 1042 has a plurality of openings, each of which is used to expose a corresponding color resist block 1041. The orthographic projection of each color resist block 1041 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 1041 and then be emitted.

[0092] 6 , the first flat film layer 105 includes a third target portion 1051 located in the display area 1011c and the transition area 1011b and having a continuous film layer. The third target portion 1051 is close to the third boundary 1051a of the hole area 1011a and is located in the transition area 1011b, and the distance between the third boundary 1051a and the display area 1011c is smaller than the distance between the third boundary 1051a and the hole area 1011a.

[0093] Because the first flat film layer 105 is located between the second dimming layer 103 and the display substrate 101, the first flat film layer 105 also serves as an intermediate transmission layer for the pulling force generated by the second dimming layer 103, transmitting the pulling force generated by the second dimming layer 103 to the display substrate 101. Therefore, by designing a larger distance between the third boundary 1051a of the third target portion 1051 of the first flat film layer 105 and the hole area 1011a, the effect of the first flat film layer 105 acting as an intermediate transmission layer for transmitting pulling force can be reduced, further reducing the possibility of film separation and improving the yield of the display panel.

[0094] 6 , second boundary 1021a is further away from display area 1011c than first boundary 1031a, and third boundary 1051a is further away from display area 1011c than second boundary 1021a. The orthographic projection of first boundary 1031a on substrate 1011 is within the orthographic projection of second target portion 1021 on substrate 1011, and the orthographic projection of second boundary 1021a on substrate 1011 is within the orthographic projection of third target portion 1051 on substrate 1011.

[0095] That is, the third target portion 1051, the second target portion 1021, and the first target portion 1031 are sequentially designed to be inwardly spaced away from the aperture region 1011a. Optionally, the distance h2 between the first boundary 1031a and the second boundary 1021a is greater than or equal to 10 μm, and the distance between the second boundary 1021a and the third boundary 1051a is greater than or equal to 10 μm. That is, in FIG6 , the first target portion 1031 is at least 10 μm inwardly spaced away from the aperture region 1011a relative to the second target portion 1021, and the second target portion 1021 is at least 10 μm inwardly spaced away from the aperture region 1011a relative to the third target portion 1051.

[0096] 7 , second boundary 1021a is further away from display area 1011c than third boundary 1051a, and first boundary 1031a is further away from display area 1011c than second boundary 1021a. The orthographic projection of first target portion 1031 on substrate 1011 overlaps the orthographic projection of second boundary 1021a on substrate 1011, and the orthographic projection of second target portion 1021 on substrate 1011 overlaps the orthographic projection of third boundary 1051a on substrate 1011.

[0097] That is, the first target portion 1031, the second target portion 1021, and the third target portion 1051 are sequentially wrapped in a direction approaching the hole region 1011a. Optionally, the distance h2 between the first boundary 1031a and the second boundary 1021a is greater than or equal to 10 μm, and the distance between the second boundary 1021a and the third boundary 1051a is greater than or equal to 10 μm. That is, in FIG7 , the first target portion 1031 wraps at least 10 μm relative to the second target portion 1021 in the direction approaching the hole region 1011a, and the second target portion 1021 wraps at least 10 μm relative to the third target portion 1051 in the direction approaching the hole region 1011a.

[0098] 8 , second boundary 1021a is further away from display area 1011c than third boundary 1051a, and first boundary 1031a is further away from display area 1011c than third boundary 1051a. The orthographic projection of second boundary 1021a on substrate 1011 is located above the orthographic projection of third target portion 1051 on substrate 1011. The orthographic projection of first target portion 1031 on substrate 1011 covers the orthographic projection of second boundary 1021a on substrate 1011 and also covers the orthographic projection of third boundary 1051a on substrate 1011.

[0099] That is, the second target portion 1021 is designed to be retracted relative to the third target portion 1051 in a direction away from the hole area 1011a, while the first target portion 1031 is designed to wrap around the second target portion 1021 and the third target portion 1051 in a direction toward the hole area 1011a. Optionally, the distance h2 between the second boundary 1021a and the third boundary 1051a is greater than or equal to 10 μm, and the distance h1 between the first boundary 1031a and the third boundary 1051a is greater than or equal to 10 μm. That is, in FIG8 , the second target portion 1021 is retracted at least 10 μm relative to the third target portion 1051 in a direction away from the hole area 1011a, while the first target portion 1031 wraps around the third target portion 1051 in a direction toward the hole area 1011a by at least 10 μm.

[0100] In the embodiment of the present application, in FIG. 1 and FIG. 4 to FIG. 8 , the first boundary 1031a of the first target portion 1031, the second boundary 1021a of the second target portion 1021, and the third boundary 1051a of the third target portion 1051 are all relatively far from the hole area 1011a (resulting in a relatively large hollowed-out area). This may result in poor flatness of the surface of the display panel 10 where the second dimming layer 103 is disposed. When subsequently attaching a glass substrate to the side of the second dimming layer 103 away from the base substrate 1011 using adhesive, a large amount of adhesive is required to flatten the surface, resulting in poor flexibility.

[0101] Based on the above reasons, as a first optional implementation, referring to FIG9 , the second dimming layer 103 further includes a plurality of first dimming island patterns 1032 located in the transition region 1011b and spaced evenly apart. The plurality of first dimming island patterns 1032 are positioned closer to the aperture region 1011a relative to the first target portion 1031, with a gap between each first dimming island pattern 1032 and the first target portion 1031. By designing the first dimming island patterns 1032, the flatness of the display panel 10 can be improved, thereby requiring less adhesive to flatten the surface and providing greater flexibility.

[0102] Furthermore, because there is a gap between any first dimming island pattern 1032 and the first target portion 1031, the pulling force generated by the expansion of the first target portion 1031 is not transmitted from the first dimming island pattern 1032 to the hole region 1011a. Furthermore, because the first dimming island pattern 1032 is relatively small relative to the entire film layer, the pulling force generated by the expansion of the first dimming island pattern 1032 is relatively small. This smaller pulling force has a minimal impact on the hole region 1011a, and is unlikely to cause film separation in the display panel 10.

[0103] Furthermore, since the pulling force generated by the first dimming island pattern 1032 is relatively small, even if a first dimming layer 102 (intermediate transfer layer) is designed under the first dimming island pattern 1032 , it will not have much impact on the hole area 1011 a and can improve the surface flatness.

[0104] Thus, referring to Figures 9 and 10 , the first dimming layer 102 includes a second target portion 1021 located in the transition region 1011b and having a continuous film layer. The second target portion 1021 is located in the transition region 1011b near the second boundary 1021a of the aperture region 1011a. The second boundary 1021a of the second target portion 1021 included in the first dimming layer 102 is further away from the display region 1011c than the plurality of first dimming island patterns 1032. The orthographic projections of the plurality of first dimming island patterns 1032 on the base substrate 1011 are located within the orthographic projections of the second target portion 1021 on the base substrate 1011.

[0105] Optionally, referring to FIG10 , the orthographic projection of the first dimming island pattern 1032 on the base substrate 1011 may be a square. The orthographic projection of the first dimming island pattern 1032 on the base substrate 1011 may also be other shapes, such as a triangle, a circle, or a hexagon. The embodiment of the present application does not limit the shape of the first dimming island pattern 1032.

[0106] In an embodiment of the present application, as a second optional implementation, referring to Figures 11 and 12 , the first dimming layer 102 includes a second target portion 1021 located in the transition region 1011b and having a continuous film layer. The second target portion 1021 has a second boundary 1021a located in the transition region 1011b, close to the aperture region 1011a. The second boundary 1021a is further away from the display region 1011c than the first boundary 1031a. The orthographic projection of the first boundary 1031a on the base substrate 1011 is located within the orthographic projection of the second target portion 1021 on the base substrate 1011.

[0107] Furthermore, the first dimming layer 102 also includes a plurality of second dimming island patterns 1022 located in the transition region 1011b and spaced evenly apart. These second dimming island patterns 1022 are further away from the display region 1011c than the second target portion 1021. This improves flatness while reducing the effect of the first dimming layer 102 acting as an intermediate transmission layer to transmit tensile forces. Furthermore, a gap exists between any second dimming island pattern 1022 and the second target portion 1021, meaning that there is no direct contact between the first target portion 1031 of the second dimming layer 103 and any second dimming island pattern 1022. This prevents the tensile forces generated by the expansion of the first target portion 1031 of the second dimming layer 103 from being transmitted through the second dimming island patterns 1022.

[0108] Optionally, referring to FIG12 , the orthographic projection of the second dimming island pattern 1022 on the base substrate 1011 may be a square. The orthographic projection of the second dimming island pattern 1022 on the base substrate 1011 may also be other shapes, such as a triangle, a circle, and a hexagon. The embodiment of the present application does not limit the shape of the second dimming island pattern 1022.

[0109] As a third optional implementation, when the material of the first dimming layer 102 is different from that of the first flat film layer 105, with reference to Figures 13 and 14, the portion where the orthographic projection of the first flat film layer 105 on the base substrate 1011, the orthographic projection of the first target portion 1031 on the base substrate 1011, and the orthographic projection of the second target portion 1021 on the base substrate 1011 do not overlap has multiple island-shaped grooves 105a spaced and evenly arranged. The first dimming layer 102 includes multiple third dimming island patterns (not shown in the figure) corresponding to the multiple island-shaped grooves 105a, each of which is located within a corresponding island-shaped groove 105a. As a result, the pulling force generated by the expansion of the first target portion 1031 of the second dimming layer 103 can only be continuously transmitted between the different materials, which can weaken the transmission effect of the pulling force and reduce the possibility of film separation.

[0110] As a fourth optional implementation, referring to Figures 15 and 16, the second dimming layer 103 also includes a plurality of first dimming ring patterns 1033 located in the transition area 1011b and spaced apart. The orthographic projection of the first dimming ring pattern 1033 on the base substrate 1011 surrounds the hole area 1011a and is further away from the display area 1011c relative to the first target portion 1031. There is a gap between any first dimming ring pattern 1033 and the first target portion 1031. This can prevent the pulling force generated by the expansion of the first target portion 1031 from being transmitted along the first dimming ring pattern 1033. In addition, the width of the first dimming ring pattern 1033 is small (the width ranges from 3μm to 20μm), so the pulling force generated by the expansion of the first dimming ring pattern 1033 is small, and the impact on the hole area 1011a is also small.

[0111] In addition, the first dimming layer 102 also includes a plurality of second dimming ring patterns 1024 located in the transition area 1011b and spaced apart. The orthographic projection of the second dimming ring pattern 1024 on the base substrate 1011 surrounds the hole area 1011a and is further away from the display area 1011c relative to the second target portion 1021. There is a gap between any second dimming ring pattern 1024 and the second target portion 1021. Thus, the pulling force generated by the expansion of the first target portion 1031 can be prevented from being transmitted along the second target portion 1021 and the second dimming ring pattern 1024. In addition, the width of the second dimming ring pattern 1024 is relatively small (the width ranges from 3μm to 20μm), so it cannot serve as an intermediate transfer layer to transmit the pulling force, thereby avoiding too much impact on the hole area 1011a.

[0112] In addition, the plurality of first dimming ring patterns 1033 and the plurality of second dimming ring patterns 1024 are arranged in a staggered manner, so that the first dimming ring patterns 1033 and the second dimming ring patterns 1024 made of different materials are distributed discontinuously, thereby blocking the downward transmission of the pulling force and reducing the transmission effect of the pulling force.

[0113] As a fifth optional implementation, referring to FIG17 , the first dimming layer 102 includes a plurality of strip-shaped grooves located in the transition region 1011 b. The plurality of strip-shaped grooves are evenly arranged (e.g., distributed in a radial pattern) around the aperture region 1011 a. The second dimming layer 103 includes a plurality of dimming strip patterns 1034 corresponding to the plurality of strip-shaped grooves, with each dimming strip pattern 1034 located within a corresponding strip-shaped groove.

[0114] 17 shows 16 strip grooves, but in fact the number of strip grooves is not specifically limited as long as it can meet the requirements of the manufacturing process. Optionally, the distance between adjacent strip grooves close to one end of the hole area 1011a can be greater than or equal to 3μm.

[0115] It should be noted that the portion of the first dimming layer 102 located near the first target portion 1031 and the hole region 1011a may also have other shapes or arrangements, as long as the portion of the first dimming layer 102 located near the first target portion 1031 and the hole region 1011a is patterned and spaced apart from the first target portion 1031. Furthermore, the portion of the second dimming layer 103 located near the second target portion 1021 and the hole region 1011a may also have other shapes or arrangements, as long as the portion of the second dimming layer 103 located near the second target portion 1021 and the hole region 1011a is patterned and spaced apart from the second target portion 1021.

[0116] In the embodiment of the present application, referring to Figures 1 and 3 through 17 , the display substrate 101 further comprises 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 comprises a first spacer 106, a first blocking structure 107, and a second spacer 108 located in the transition region 1011b and arranged sequentially away from the display region 1011c. The first organic functional layer M is broken at at least one of the first spacer 106 and the second spacer 108.

[0117] 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 106 and the second isolation column 108, 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, and the display effect can be guaranteed.

[0118] 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 display substrate 101 in the hole area 1011a. By breaking the first organic functional layer M at at least one of the first isolation column 106 and the second isolation column 108, water vapor and oxygen can be prevented from entering the display area 1011c along the first organic functional layer M.

[0119] Optionally, both the first isolation pillar 106 and the second isolation pillar 108 may be ring-shaped structures surrounding the hole region 1011a. The display substrate 101 may include multiple first isolation pillars 106 and multiple second isolation pillars 108. For example, in FIG1 , the display substrate 101 may include two first isolation pillars 106 and four second isolation pillars 108.

[0120] Furthermore, the distance between the first boundary 1031a and the aperture region 1011a can be measured by the distance h3 between the orthographic projection of the first boundary 1031a on the base substrate 1011 and the orthographic projection of the centerline of the second spacer pillar 108 closest to the display area 1011c among the plurality of second spacer pillars 108 on the base substrate 1011. For example, the distance h3 can be greater than or equal to 100 μm to ensure a greater distance between the first target portion 1031 of the second dimming layer 103 and the aperture region 1011a, thereby reducing the effect of the pulling force generated by the expansion of the first target portion 1031 on the aperture region 1011a.

[0121] In addition, in the scheme shown in Figure 9, the distance h4 between the orthographic projection of the second boundary 1021a of the second target portion 1021 on the base substrate 1011 and the orthographic projection of the center line of a second isolation column 108 closest to the display area 1011c among the multiple second isolation columns 108 on the base substrate 1011 can be greater than or equal to 50μm.

[0122] In the embodiment of the present application, referring to FIG. 2 , the base substrate 1011 further includes a peripheral region 1011d surrounding the display region 1011c. The display substrate 101 further includes a second blocking structure (not shown) located in the peripheral region 1011d. This second blocking structure can be used to prevent overflow of organic material from the display region 1011c.

[0123] In an embodiment of the present application, referring to Figure 3, the display substrate 101 includes: a buffer layer (buffer) n1, an active layer n2, a first gate insulating layer (GI) n3, a first gate layer n4, a second gate insulating layer n5, a second gate layer n6, an inter-level dielectric layer (ILD) n7, a first source and drain layer n8, a first 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 (PDL) n13, a support 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 10111011.

[0124] 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.

[0125] In the embodiment of the present application, both the first spacer 106 and the second spacer 108 include a target film layer W. The target film layer W 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 W in the first spacer 106 and the second spacer 108 in the shape of an I, the first organic functional layer M can be easily broken at the first spacer 106 and the second spacer 108, thereby preventing moisture and oxygen from entering the display area 1011c.

[0126] Optionally, referring to FIG18 , the target film layer W includes a first metal layer W1, a second metal layer W2, and a third metal layer W3 stacked sequentially in a direction away from the base substrate 1011. The etching rate of the second metal layer W2 is greater than the etching rate of the first metal layer W1, and greater than the etching rate of the third metal layer W3.

[0127] In the embodiment of the present application, since the etching rate of the second metal layer W2 is relatively high, while the etching rates of the first metal layer W1 and the third metal layer W3 are relatively low, the target film layer W can be made into an I-shape based on the difference in etching rates of the various metal layers.

[0128] For example, assuming that the target film layer W 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 W1 and the third metal layer W3 in the target film layer W can both be titanium, and the material of the second metal layer W2 can be aluminum.

[0129] In an embodiment of the present application, the first isolation column 106 and the second isolation column 108 may include other film layers in addition to the target film layer W. For example, the first isolation column 106 and the second isolation column 108 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] Referring to Figure 3 , 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.

[0135] 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.

[0136] 3 , 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.

[0137] 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 second blocking structure closer to the display area 1011c.

[0138] 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 1011b, which can prevent water vapor and oxygen from entering the display area 1011c from the organic encapsulation layer n172, thereby ensuring the encapsulation effect.

[0139] 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.

[0140] 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).

[0141] In the embodiment of the present application, referring to FIG1 , the first blocking structure 107 may include a first blocking dam 1071. The first blocking dam 1071 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.

[0142] Of course, the first blocking structure 107 may include a first blocking dam 107110131 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 1071 and the height of the second blocking dam may be equal. For example, the first blocking dam 1071 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 1071 and the height of the second blocking dam may also be unequal, and this embodiment of the present application is not limited thereto.

[0143] In the embodiment of the present application, referring to FIG3 , the display panel 10 further includes: a touch substrate 109 and a second planar film layer 110 , which are positioned between the display substrate 101 and the first dimming layer 102 and stacked away from the display substrate 101. The touch substrate 109 includes a first touch electrode layer 1091 , a touch insulating layer 1092 , and a second touch electrode layer 1093 , which are positioned on the light-emitting side of the display substrate 101 and stacked in sequence.

[0144] One of the first touch electrode layer 1091 and the second touch electrode layer 1093 includes a plurality of bridging electrodes s12 for the first touch electrodes s1, and the other of the first touch electrode layer 1091 and the second touch electrode layer 1093 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 through vias in the touch insulating layer 1092.

[0145] Optionally, referring to FIG19 , the bridging electrodes of the plurality of first touch electrodes s1 are located in the first touch electrode layer 1091, and the body electrodes s11 of the plurality of first touch electrodes s1 and the plurality of second touch electrodes s2 are located in the second touch electrode layer 1093. Alternatively, the body 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 1091, and the bridging electrodes s12 of the plurality of first touch electrodes s1 are located in the second touch electrode layer 1093.

[0146] Furthermore, the touch substrate 109 may also 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.

[0147] While the drive circuit provides a drive 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, which is received from the second touch electrode s2. If a user's finger approaches the display panel, the detection circuit 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.

[0148] 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.

[0149] Referring to FIG. 3 , the portion of the first dimming layer 102 located in the display area 1011c includes a plurality of dimming patterns 1025. The orthographic projections of the dimming patterns 1025 on the substrate 1011 overlap with the orthographic projections of the spaces between adjacent pixel units 1012 on the substrate 1011. Furthermore, the angle between the extended surfaces of the sidewalls of the dimming patterns 1025 and the supporting surface of the substrate 1011 is either acute or obtuse. In other words, the extended surfaces of the sidewalls of the dimming patterns 1025 are inclined relative to the supporting surface of the substrate 1011.

[0150] Optionally, by setting the refractive index of the first dimming layer 102 to be smaller than that of the second dimming layer 103 , the side surfaces of the dimming pattern 1025 can refract and converge light. In other words, light emitted by the pixel unit 1012 can be converged after being refracted by the side surfaces of the dimming pattern 1025 .

[0151] In the embodiment of the present application, the second flat film layer 110 can be a full-surface film layer located in the display area 1011c and the transition area 1011b, and extending directly to the hole area 1011a. Although the second flat film layer 110 is located between the display substrate 101 and the second dimming layer 103 and serves as an intermediate transfer layer, the distance between the second flat film layer 110 and the second dimming layer 103 in the longitudinal direction (perpendicular to the supporting surface of the base substrate 1011) is relatively far. Therefore, the second flat film layer 110 is not particularly effective in transmitting tensile force as an intermediate transfer layer. Even if the second flat film layer 110 is designed as a full-surface film layer, the impact on the hole area 1011a will not be significant.

[0152] Alternatively, the second flat film layer 110 includes a fourth target portion located between the display area 1011c and the transition area 1011b, where the film layer is continuous. The fourth target portion, with a fourth boundary proximate to the aperture area 1011a, is located in the transition area 1011b, and the distance between the fourth boundary and the display area 1011c is smaller than the distance between the fourth boundary and the aperture area 1011a. In other words, the second flat film layer 110 can be designed to be recessed relative to the aperture area 1011a, further reducing the transmission of pulling force.

[0153] Optionally, the fourth boundary of the fourth target portion may be retracted or wrapped relative to the first boundary 1031a of the first target portion 1031 , the second boundary 1021a of the second target portion 1021 , and the third boundary 1051a of the third target portion 1051 .

[0154] For example, in the case of the first boundary 1031a of the first target portion 1031, the second boundary 1021a of the second target portion 1021, and the third boundary 1051a of the third target portion 1051 shown in FIG6 , the fourth boundary of the fourth target portion can be further away from the display area 1011c than the third boundary 1051a of the third target portion 1051. That is, the fourth target portion, the third target portion 1051, the second target portion 1021, and the first target portion 1031 are sequentially retracted inward in a direction away from the hole area 1011a. In the case of the first boundary 1031a of the first target portion 1031, the second boundary 1021a of the second target portion 1021, and the third boundary 1051a of the third target portion 1051 shown in FIG7 , the fourth boundary of the fourth target portion can be closer to the display area 1011c than the third boundary 1051a of the third target portion 1051. That is, the fourth target portion, the third target portion 1051 , the second target portion 1021 and the first target portion 1031 are sequentially wrapped toward the hole area 1011 a .

[0155] In summary, an embodiment of the present application provides a display panel, which includes a display substrate, a first dimming layer and a second dimming layer, and the display substrate includes a base substrate and a plurality of pixel units. 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. In addition, since the distance between the first boundary of the first target portion of the second dimming layer, which is located in the display area and the transition area and has a continuous film layer, and the hole area is large, the influence of the pulling force generated by the expansion of the first target portion of the second dimming layer on the hole area can be reduced. In this way, the possibility of film separation in the display panel can be reduced, and the yield of the display panel can be improved.

[0156] FIG20 is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Referring to FIG20 , 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.

[0157] 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.

[0158] For example, the display device is an active-matrix organic light emitting diode (AMOLED) display panel.

[0159] 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.

[0160] The terms used in the embodiments of this application are only used to explain the embodiments of this application and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this application should have the common meaning understood by people with ordinary skills in the field to which this application belongs.

[0161] The terms used in the embodiments of this application are intended solely to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in the embodiments of this application should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and similar terms used in this patent specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish between different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. Terms such as "include" or "comprising" and similar terms mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising," and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used solely to indicate relative positions. When the absolute position of the described objects changes, the relative positions may also change accordingly.

[0162] 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, and a display area surrounding the transition 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 sequentially stacked, the refractive index of the first dimming layer is different from the refractive index of the second dimming layer, and the first dimming layer and the second dimming layer are located at least in the display area; The second dimming layer includes a first target portion located in the display area and the transition area and having a continuous film layer, the first target portion is located in the transition area close to a first boundary of the hole area, and the distance between the first boundary and the display area is smaller than the distance between the first boundary and the hole area.

2. The display panel according to claim 1, characterized in that: The first dimming layer includes a second target portion located in the transition area and having a continuous film layer. The second target portion is located in the transition area near a second boundary of the hole area, and a distance between the second boundary and the display area is smaller than a distance between the second boundary and the hole area.

3. The display panel according to claim 2, characterized in that: The second boundary is farther away from the display area than the first boundary, and the orthographic projection of the first boundary on the substrate is located within the orthographic projection of the second target portion on the substrate; or, The first boundary is farther away from the display area than the second boundary, and the orthographic projection of the first target portion on the base substrate covers the orthographic projection of the second boundary on the base substrate.

4. The display panel according to claim 2, characterized in that: The display panel further includes: a color filter layer and a first flat film layer located between the display substrate and the first dimming layer and stacked in a direction away from the display substrate; The color filter layer includes a plurality of color blocks located in the display area and a black matrix located in the display area, the orthographic projection of the color blocks on the substrate overlaps with the orthographic projection of the light-emitting area of ​​the pixel unit on the substrate, the light emitted by the pixel unit passes through the color blocks and then exits, and the orthographic projection of the black matrix on the substrate is located between the light-emitting areas of adjacent pixel units; The first flat film layer includes a third target portion located in the display area and the transition area and having a continuous film layer. The third target portion is located in the transition area near a third boundary of the hole area, and the distance between the third boundary and the display area is smaller than the distance between the third boundary and the hole area.

5. The display panel according to claim 4, characterized in that: The second boundary is farther from the display area than the first boundary, and the third boundary is farther from the display area than the second boundary; The orthographic projection of the first boundary on the substrate is located within the orthographic projection of the second target portion on the substrate, and the orthographic projection of the second boundary on the substrate is located within the orthographic projection of the third target portion on the substrate.

6. The display panel according to claim 4, characterized in that: The second boundary is farther from the display area than the third boundary, and the first boundary is farther from the display area than the second boundary; The orthographic projection of the first target portion on the substrate covers the orthographic projection of the second boundary on the substrate, and the orthographic projection of the second target portion on the substrate covers the orthographic projection of the third boundary on the substrate.

7. The display panel according to claim 4, characterized in that: The second boundary is further away from the display area than the third boundary, and the first boundary is further away from the display area than the third boundary; The orthographic projection of the second boundary on the substrate is located at the orthographic projection of the third target portion on the substrate, and the orthographic projection of the first target portion on the substrate covers the orthographic projection of the second boundary on the substrate and covers the orthographic projection of the third boundary on the substrate. Orthographic projection.

8. The display panel according to claim 1, characterized in that: The second dimming layer further includes a plurality of first dimming island patterns located in the transition region and evenly spaced; The plurality of first dimming island patterns are close to the hole area relative to the first target portion, and there is a gap between any of the first dimming island patterns and the first target portion.

9. The display panel according to claim 8, characterized in that: The first dimming layer includes a second target portion located in the transition region and having a continuous film layer, and the second target portion is located in the transition region near a second boundary of the hole area; The second boundary is farther away from the display area than the plurality of first dimming island patterns, and the orthographic projections of the plurality of first dimming island patterns on the base substrate are located within the orthographic projection of the second target portion on the base substrate.

10. The display panel according to claim 1, characterized in that: The first dimming layer includes a second target portion located in the transition region and having a continuous film layer, the second target portion is located in the transition region near a second boundary of the hole region; the second boundary is farther from the display region than the first boundary, and an orthographic projection of the first boundary on the base substrate is located within an orthographic projection of the second target portion on the base substrate; The first dimming layer also includes a plurality of second dimming island patterns located in the transition area and evenly spaced, wherein the plurality of second dimming island patterns are farther away from the display area relative to the second target portion, and there is a gap between any second dimming island pattern and the second target portion.

11. The display panel according to claim 1, characterized in that: The display panel further includes: a first flat film layer located between the display substrate and the first dimming layer; the material of the first dimming layer is different from the material of the first flat film layer; A portion where the orthographic projection of the first flat film layer on the base substrate, the orthographic projection of the first target portion on the base substrate, and the orthographic projection of the second target portion on the base substrate do not overlap has a plurality of island-shaped grooves that are spaced and evenly arranged; The first dimming layer includes a plurality of third dimming island patterns corresponding to the plurality of island-shaped grooves. Each of the third dimming island patterns is located in a corresponding one of the island-shaped grooves.

12. The display panel according to claim 1, characterized in that: The second dimming layer further includes a plurality of first dimming ring patterns located in the transition region and spaced apart, wherein the orthographic projections of the first dimming ring patterns on the base substrate surround the hole region and are further away from the display region than the first target portion; There is a gap between any of the first dimming ring patterns and the first target portion; The first dimming layer further includes a plurality of second dimming ring patterns located in the transition region and arranged at intervals, wherein the orthographic projections of the second dimming ring patterns on the base substrate surround the hole region and are further away from the display region than the second target portion; There is a gap between any of the second dimming ring patterns and the second target portion; Wherein, the plurality of first dimming ring patterns and the plurality of second dimming ring patterns are arranged alternately.

13. The display panel according to claim 1, characterized in that: The first dimming layer comprises a plurality of strip-shaped grooves located in the transition area, and the plurality of strip-shaped grooves are evenly arranged around the hole area; The second dimming layer includes a plurality of dimming stripe patterns corresponding to the plurality of stripe grooves, and each of the dimming stripe patterns is located in a corresponding one of the stripe grooves.

14. The display panel according to any one of claims 1 to 13, characterized in that: The display substrate further comprises: a first organic functional layer located on one side of the base substrate, the first organic functional layer being located in the display region and the transition region; the display substrate further comprises: a first isolation column, a first blocking structure and a second isolation column which are located in the transition region and arranged in sequence in a direction away from the display region; The first organic functional layer is broken at at least one of the first isolation column and the second isolation column.

15. The display panel according to claim 14, characterized in that: The display substrate comprises: a buffer layer, an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source-drain electrode layer, a first planarization layer, a second source-drain electrode layer, a second planarization layer, an anode layer, a pixel defining layer, a support layer, a light-emitting film layer, a cathode layer and an encapsulation film layer, which are sequentially stacked in a direction away from the base substrate; The light-emitting film layer includes the first organic functional layer, the second organic functional layer and a light-emitting pattern, the first organic functional layer includes at least a hole transport layer and an electron transport layer, and the second organic functional layer includes at least a hole injection layer and an electron injection layer; The encapsulation film layer includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer stacked in sequence, the first inorganic encapsulation layer and the second inorganic encapsulation layer are located in the display area, the peripheral area and the transition area, and the organic encapsulation layer is located on a side of the first blocking structure close to the display area.

16. The display panel according to claim 15, characterized in that: The first isolation column and the second isolation column both include at least a target film layer; The target film layer is located in the first source and drain electrode layer, and the orthographic projection of the target film layer on the reference plane is in an I-shape, and the reference plane is perpendicular to the supporting surface of the substrate.

17. The display panel according to claim 15, characterized in that: The display substrate includes a plurality of second isolation columns; A distance between an orthographic projection of the first boundary on the base substrate and an orthographic projection of a center line of a second isolation column closest to the display area among the plurality of second isolation columns on the base substrate is greater than or equal to 100 micrometers.

18. The display panel according to any one of claims 1 to 17, characterized in that: The display panel further includes: a touch control substrate and a second flat film layer located between the display substrate and the first dimming layer and stacked in a direction away from the display substrate; The touch control substrate comprises a first touch control electrode layer, a touch control insulating layer and a second touch control electrode layer stacked in sequence; One of the first touch electrode layer and the second touch electrode layer includes a bridge electrode of multiple first touch electrodes, the other of the first touch electrode layer and the second touch electrode layer includes a main electrode of the multiple first touch electrodes and a multiple second touch electrodes, and the bridge electrode and the main electrode are electrically connected through vias in the touch insulation layer.

19. The display panel according to claim 18, characterized in that: The second flat film layer includes a fourth target portion located in the display area and the transition area and having a continuous film layer. The fourth target portion is located in the transition area near a fourth boundary of the hole area, and a distance between the fourth boundary and the display area is smaller than a distance between the fourth boundary and the hole area.

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.

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