Display panel and display device

Abstract

The invention discloses a display panel and a display device, and relates to the technical field of display. A display substrate in the display panel comprises a substrate, a plurality of pixel units, a first dimming layer and a second dimming layer. Wherein the refractive index of the first dimming layer is different from that of the second dimming layer, so that the effect of converging light rays emitted by the pixel units can be achieved, the light emitting amount of forward light emitting of the pixel units is improved, and the display effect of the display panel is improved. Moreover, the thickness of the part, located in the first target area of the transition area, of the second dimming layer is small, so that an expansion space can be provided for material expansion of the second dimming layer, and the total expansion amount of the second dimming layer can be reduced. Therefore, the expansion amount of the second dimming layer can be prevented from being too large, the possibility of warping of the display panel can be further reduced, the possibility of film layer separation in the display panel is further reduced, and the yield of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] The display panel includes a base substrate and a pixel unit located in a display area of ​​the base substrate, wherein the pixel unit can emit light to realize display of the display panel.

[0003] In the related art, the display panel further includes a dimming layer located in the display area, and the dimming layer can converge the light in the edge area of ​​the pixel unit to increase the amount of forward light emitted by the pixel unit.

[0004] However, the dimming layer is prone to warping during the preparation of subsequent film layers, 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. Summary of the invention

[0005] The present application provides a display panel and a display device, which can solve the problem of low yield of display panels in related technologies. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, the display panel 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, the plurality of pixel units being located in the display area;

[0009] 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;

[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 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;

[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 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;

[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, the plurality of first sub-areas being 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 region;

[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 substrate surround the orthographic projections of the plurality of first sub-regions on the substrate;

[0019] Wherein, 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 regions one by one, and an orthographic projection of each of the first grooves on the substrate overlaps with an orthographic projection of a corresponding first target region on the substrate.

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

[0024] Optionally, the display panel further comprises: 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 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;

[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 and 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 a 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 a 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, an orthographic projection of the groove structure on the display substrate is located in a light-emitting area of ​​the pixel unit; and a depth of the groove structure is less than or equal to a 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 as described in the above aspect;

[0044] Wherein, the power supply component is used to supply power to the display panel.

[0045] The beneficial effects of the technical solution provided by this application include at least:

[0046] The present application provides a display panel and a display device, wherein the display substrate in the display panel 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 light emitted in the forward direction of the pixel unit and improve the display effect of the display panel. In addition, since the thickness of the second dimming layer located in the first target area of ​​the transition area 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, it is possible to avoid the second dimming layer from expanding too much, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0048] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0049] Figure 2 is a top view of a substrate provided in an embodiment of the present application;

[0050] Figure 3 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0051] Figure 4 is a partial schematic diagram of a second dimming layer provided in an embodiment of the present application;

[0052] Figure 5 is a partial schematic diagram of another second dimming layer provided in an embodiment of the present application;

[0053] Figure 6 is a partial schematic diagram of another second dimming layer provided in an embodiment of the present application;

[0054] Figure 7 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0055] Figure 8 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0056] Fig. 9 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0057] Fig.10 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0058] Fig.11 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0059] Fig.12 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0060] Fig.13 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0061] Fig.14is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0062] Fig.15 is a partial schematic diagram of the target film layer and the first organic functional layer provided in an embodiment of the present application;

[0063] Fig.16 is a partial schematic diagram of a touch control substrate provided in an embodiment of the present application;

[0064] Fig.17 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0065] Fig.18 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0066] Fig.19 It is a structural schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0068] Figure 1 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application. Figure 1 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 1 is a top view of a substrate provided in an embodiment of the present application. Figure 1 and Figure 2 The base substrate 1011 has a hole area 1011a, a transition area 1011b surrounding the hole area 1011a, a display area 1011c surrounding the transition area 1011b, and a peripheral area 1011d surrounding the display area 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 in a 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 first dimming layer 102 and the second dimming layer 103 The part of 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 the light in the edge area of ​​the pixel unit 1012 is irradiated to 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 bearing surface of the base substrate 1011) relative to the incident direction. That is, the first dimming layer 102 and the second dimming layer 103 can converge the light in the edge area of ​​the pixel unit 1012 to increase the light output of the forward light output of the pixel unit 1012.

[0072] During the entire preparation process of the display panel, after the second dimming layer 103 is prepared, in the subsequent preparation process of other film layers, the entire structure may need to be treated under high temperature or high humidity. High temperature may refer to above 85°C (degrees Celsius), and high humidity may 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 is warped, it is easy to cause the film layer in the display panel to separate (peeling). Moreover, if the film layer separates, it is easier for 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, which leads to poor display effect and may even lead to product scrapping. Furthermore, when the physical properties of the second dimming layer 103 change, the film layer in the display substrate 101 is located in the transition area 1011b close to the hole area 1011a, which is more likely to separate (peeling), and the side wall of the hole area 1011a is exposed, so it is easier for water vapor and oxygen to invade the display area 1011c from the side wall 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 the film layer from separating and causing water vapor and oxygen intrusion.

[0074] In the 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] In 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, thereby reducing the possibility of film layer 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 light emitted in the forward direction of the pixel unit and improve the display effect of the display panel. In addition, since the thickness of the second dimming layer located in the first target area of ​​the transition area 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, it is possible to avoid the second dimming layer from expanding too much, 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] Optional, reference Figure 1 , the structure of the second dimming layer 103 located in the first target area 103a may be a through hole. 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 a foldable display panel, since the foldable display panel is prone to displacement between film layers during refraction, the stability is low. If the structure of the second dimming layer 103 located in the first target area 103a is a through hole, it may cause a greater amount of displacement of the film layer. Therefore, for a foldable display panel, the structure of the second dimming layer 103 located in the first target area 103a may preferably be a groove. The depth of the groove can be flexibly adjusted according to different products.

[0080] In the 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 foldable display panel can be subjected to a performance test. If all the performances 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 is too warped 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 (micrometer), 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, refer to Figure 4 , 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 hole area 1011a. Figure 4 There is a gap between any two adjacent first target areas 103a in the plurality of first target areas 103a, and the orthographic projection of the gap on the base substrate 1011 is annular. That is, the plurality of first target areas 103a disposed in the portion of the second dimming layer 103 located in the transition area 1011b can be disposed in sequence.

[0082] Example, reference Figure 4 The portion of the second dimming layer 103 located in the transition region 1011b may have three first target regions 103a, and the 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, which is not limited in the present embodiment.

[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. Considering 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, refer to Figure 5 The orthographic projection of each first target area 103a on the substrate 1011 is in the shape of a strip, and the extension direction of each first target area 103a is the arrangement direction of the hole area 1011a and the transition area 1011b. The plurality of first target areas 103a are evenly arranged around the hole area. Figure 5 In the embodiment, the portion of the second dimming layer 103 located in the transition region 1011 b may have eight first target regions 103 a .

[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 a risk of bubbles during the subsequent attachment process of the polarizing layer, so the preferred width may be 10 μm. Multiple first target areas 103a may follow a "M"-shaped distribution. That is, the angle between the extension lines of adjacent first target areas 103a is 45°, and the number of first target areas 103a is preferably 8, which can of course be adjusted according to actual needs, for example, 6.

[0086] As another optional implementation, refer to Figure 6 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 evenly arranged in a ring-shaped 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 area 1011a. The plurality of second sub-regions 103a2 are evenly arranged in a ring-shaped 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 staggeredly arranged.

[0088] Optional, reference Figure 6, the orthographic projections of the first sub-region 103a1 and the second sub-region 103a2 on the substrate 1011 are both trapezoidal in shape. Moreover, the upper base of the trapezoid is closer to the hole region 1011a than the lower base of the trapezoid. Of course, the orthographic projections of the first sub-region 103a1 and the second sub-region 103a2 on the substrate 1011 can be of other shapes, such as circular, semi-circular, arc-shaped, triangular, square, rectangular, hexagonal, octagonal, etc. The embodiments of the present application do not limit this.

[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 the clock, that is, the included angle between the extension lines of the central axes of two adjacent second sub-regions 103a is 30°. Correspondingly, multiple first sub-regions 103a1 follow the same rule. Refer to Figure 6 , any one first sub-region 103a1 (inner ring region) and the two relative second sub-regions 103a2 (outer ring region) form a "pin" shape. Optionally, for the same circle of sub-regions, 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 requirements, the spacing can be 50 μm, 55 μm, etc.

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

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

[0092] Optionally, the preparation method of the multiple first grooves 102a in the first dimming layer 102 may include: forming a first dimming thin film; performing patterning on 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 method for preparing the structure (groove or through hole) of the second dimming layer 103 located in the first target area 103a may include: forming a second dimming film; patterning the second dimming film using a second mask plate to obtain the second dimming layer 103. The patterning process includes: coating photoresist, exposing, developing, etching, and removing the photoresist. The depth of the structure of the first target area 103a in the second dimming layer 103 is controlled by controlling the etching time of the etching process.

[0094] refer to Figure 7 , the plurality of first grooves 102a and the plurality of first target regions 103a correspond one to one, and the orthographic projection of each first groove 102a on the base substrate 1011 overlaps with the orthographic projection of a corresponding first target region 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 regions 103a in the second dimming layer 103 may be the same mask.

[0095] refer to Figure 8 , 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 first target area 103a among the plurality of first target areas 103a on the base substrate 1011. In this case, the first mask plate used to form the plurality of first grooves 102a in the first dimming layer 102 and the second mask plate used to form the plurality of first target areas 103a in the second dimming layer 103 are two different mask plates.

[0096] refer to Figure 1 , Figure 3 , Figure 7 and Figure 8 It can be seen that the display panel 10 further includes: a polarizer (POL) 104 (such as a circular polarizer) located on the side of the second dimming layer 103 away from the base substrate 1011. The function of the polarizer 104 is to change the polarization mode of light, so as to effectively resist the interference of ambient light on 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] refer to Fig. 9 and Fig.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 blocks 1051 located in the display area 1011c, a plurality of dummy color blocks 1052 located in the transition area 1011b, and a black matrix 1053 located in the display area 1011c and the transition area 1011b.

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

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

[0101] refer to Fig. 9 , at least part of the black matrix 1053 located in the transition area 1011b is located in the plurality of first target areas 103a. That is, the black matrix 1053 and the second dimming layer 103 can form a nested structure, thereby increasing the contact area between the second dimming layer 103 and the black matrix 1053, thereby increasing the bonding force between the second dimming layer 103 and the black matrix 1053, and preventing the black matrix 1053 from being separated from 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 area 1011d. When the physical properties of the second dimming layer 103 change, the film layer in the display substrate 101 is easily separated in addition to the part located in the transition area 1011b, and the part located in the peripheral area 1011d is also easily separated, and water vapor and oxygen may invade the display area 1011c through the peripheral area 1011d. Therefore, in order to ensure the display effect of the display panel 10, it is also necessary to specially design the part of the second dimming layer 103 located in the peripheral area 1011d.

[0103] In the examples of this application, refer to Fig.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] In the subsequent high temperature or high humidity process of forming the display panel, since the thickness 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 part 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] Optional, reference Fig.11 , the structure of the second dimming layer 103 located in the second target area 103b may be a through hole. Fig.12 The structure of the second dimming layer 103 located in the second target area 103 b 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 the refraction process of the foldable display panel, and the stability is low. If the structure of the second dimming layer 103 located in the second target area 103b is a through hole, it may cause the film layer to shift more. Therefore, for the foldable display panel, the structure of the second dimming layer 103 located in the second target area 103b can preferably be a groove. Among them, the depth of the groove can be flexibly adjusted according to different products. The specific method can refer to the above method for the first target structure, and the embodiment of the present application will not be repeated here.

[0108] In the examples of this application, refer to Fig.13 The portion of the first dimming layer 102 located in the peripheral area 1011d has a plurality of second grooves 102b, and at least a portion of the second dimming layer 103 is located in the plurality of second grooves 102b.

[0109] Since the portion of the first dimming layer 102 located in the transition area 1011b is designed with the second groove 102b, and at least part 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] Optional, reference Fig.13 , the plurality of second grooves 102b correspond to the plurality of second target areas 103b one by one, and the orthographic projection of each second groove 102b on the base substrate 1011 overlaps with the orthographic projection of a corresponding second target area 103b on the base substrate 1011. Or, referring to Fig.14 , the plurality of second grooves 102b and the plurality of second target areas 103b are staggered.

[0111] refer to Figures 11 to 14 It can be seen that the portion of the display substrate 101 located in the peripheral area 1011d also includes a plurality of crack blocking dams Z. The crack blocking dam Z includes a flat pattern located in the flat layer of the display substrate 101. The crack blocking dam Z can be prepared when preparing the flat layer, for example, it can be obtained by patterning the flat film using a mask (photoresist coating, exposure, development, etching and removal of photoresist). The crack blocking dam Z can include a plurality of strip structures independently arranged from each other, and is mainly used for: when a crack may be transmitted to the display area 1011a under the action of an external force, the crack blocking dam Z can block the extension path of the crack, thereby protecting the display area 1011a.

[0112] Furthermore, the black matrix 1053 in the color filter layer 105 can also be located in the peripheral area 1011d, and at least part of the black matrix 1053 located in the peripheral area 1011d is located in the plurality of second target areas 103b. That is, the black matrix 1053 and the part 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 increasing the bonding force between the second dimming layer 103 and the black matrix 1053, and preventing the black matrix 1053 from being separated from 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, and 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 isolation column 1012, a first blocking structure 1013, and a second isolation column 1014 located in the transition region 1011b and arranged in sequence in a direction away from the display region 1011c. The first organic functional layer M is broken at at least one of the first isolation column 1012 and the second isolation column 1014.

[0114] It should be noted that water vapor and oxygen will be transmitted to the display area 1011c along the first organic functional layer M. 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. Further, the first organic functional layer M can be broken at both the first isolation column 1012 and the second isolation column 1014, so that water vapor and oxygen can be further prevented 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.

[0115] In the embodiment of the present application, the material of the first organic functional layer M may be an organic material, and the organic material is easy to absorb water and oxygen, so water vapor and oxygen may enter the display substrate 101 from the first organic functional layer M located at 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 column 1012 and the second isolation column 1014, water vapor and oxygen may be prevented from entering the display area 1011c along the first organic functional layer M.

[0116] Optionally, the first isolation column 1012 and the second isolation column 1014 may both be ring-shaped structures surrounding the hole area 1011a. The display substrate 101 may include a plurality of first isolation columns 1012 and a plurality of second isolation columns 1014. For example, Figure 1 In the embodiment, the display substrate 101 may include two first spacer columns 1012 and two second spacer columns 1014 .

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

[0118] In the examples of this application, refer to Fig.10The 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 support layer (PS) n14, a light-emitting film layer n15, a cathode layer (cathode) n16 and an encapsulation film layer n17 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, the first isolation column 1012 and the second isolation column 1014 both include a target film layer H. The target film layer H is located on the first source-drain electrode layer n8, and the orthographic projection of the target film layer H on the reference plane is in the shape of an I. By setting the target film layer H in the first isolation column 1012 and the second isolation column 1014 in the shape of an I, it is convenient to break the first organic functional layer M at the first isolation column 1012 and the second isolation column 1014, thereby preventing water vapor and oxygen from entering the display area 1011c.

[0121] Optional, reference Fig.15 The target film layer H includes a first metal layer H1, a second metal layer H2 and a third metal layer H3 which are sequentially stacked 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 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 contained in each isolation column included in the display substrate 101 may be different. Of course, the film layers contained in each isolation column included in the display substrate 101 may also be the same. The embodiment of the present application does not limit this. Regardless of the film layers contained in each isolation column in the display substrate 101, it is only necessary 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 a plurality of active patterns. The first gate layer n4 may include a plurality of first gate patterns. The second gate layer n6 may include a plurality of second gate patterns. The first source-drain layer n8 may include a plurality of sources and a plurality of drains corresponding to the plurality of sources one by one. The second source-drain layer n10 may include a plurality of connection patterns.

[0128] An active pattern, a first gate pattern, a source and a drain can constitute a thin film transistor, and the source and the corresponding drain 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] refer to Fig.10The display substrate 101 includes an anode layer n12, a light-emitting film layer n15 and a cathode layer n16, which can constitute a light-emitting unit of a plurality of pixel units 1012. The anode layer n12 may include a plurality of anode patterns. The light-emitting film layer n15 may 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 area 1011c, which means that the anode layer n12, the second organic functional layer and the light-emitting pattern are only located in the display area 1011c, but not in the transition area 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] refer to Fig.10 The pixel defining layer n13 included in the display substrate 101 may have a plurality of hollow regions, each of which may be used to expose an 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 through 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, and the organic encapsulation layer n172 is located on the side of the first blocking structure 1013 close 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 an acrylic (PMMA) resin, and the thermosetting resin can include an 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 examples of this application, refer to Figure 1 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 sequentially stacked 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 area 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 both 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 the embodiment of the present application is not limited to this.

[0138] refer to Fig.11 The first blocking structure 1015 may include: a third blocking dam 10151. The third blocking 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 blocking structure 1015 may include a third blocking dam 10151 and a fourth blocking dam (not shown) arranged in a direction away from the display area 1011a. Optionally, the height of the third blocking dam 10151 may be greater than the height of the fourth blocking dam. Of course, the height of the third blocking dam 10151 and the height of the fourth blocking dam may also be equal, which is not limited in the embodiment of the present application.

[0140] In the examples of this application, refer to Fig.10 The display panel 10 further includes: a touch control substrate 106 located in the display area 1011a. The touch control substrate 106 includes a first touch control electrode layer 1061, an insulating layer 1062 and a second touch control electrode layer 1063 which are located on the light emitting side of the display substrate 101 and are stacked in sequence.

[0141] Among them, one of the first touch electrode layer 1061 and the second touch electrode layer 1063 includes a plurality of bridge electrodes s12 of the first touch electrodes s1, and the other touch electrode layer of the first touch electrode layer 1061 and the second touch electrode layer 1063 includes a plurality of main electrodes s11 of the first touch electrodes s1 and a plurality of second touch electrodes s2. The bridge electrodes and the main electrodes are electrically connected through vias in the insulating layer 1062. Among them, the material of the insulating layer 1062 can be an organic material, which is convenient for realizing the bending of the display panel 10. Of course, the material of the insulating layer 1062 can also be an inorganic material.

[0142] Optional, reference Fig.16 , the bridge electrodes of the plurality of first touch electrodes s1 are located in the first touch electrode layer 1061, the main 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 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 bridge 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 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 used to provide a driving signal to the first touch electrodes s1. The detection circuit is electrically connected to the second touch electrodes s2, and is used to detect the sensing signal between the first touch electrodes s1 and the second touch electrodes s2 received from the second touch electrodes s2.

[0144] In the process of the driving circuit providing the 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 the user's finger approaches the display panel, the detection circuit 1025 can detect that the sensing signal at the position where the user's finger is located changes, and can determine the position where the sensing signal changes as the touch position.

[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. Since the detection circuit is electrically connected to the second touch electrode s2, the second touch electrode s2 may be a sensing (RX) electrode.

[0146] In the examples of this application, refer to Fig.10 The portion of the first dimming layer 102 located in the display area 1011 a can completely 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] And, reference Fig.10 , the surface of the first dimming layer 102 located in the display area 1011a away from the display substrate 101 has a groove structure U. The angle between the extended surface of the side wall of the groove structure U and the bearing surface of the base substrate 1011 is an acute angle or an obtuse angle. That is, the extended surface of the side wall of the groove structure U is inclined relative to the bearing surface of the base substrate 1011. By setting the refractive index of the first dimming layer 102 to be smaller than the refractive index of the second dimming layer 103, the side of the groove structure U can refract and converge the light. That is, the light emitted by the pixel unit 1012 can be converged after being refracted at the side of the groove structure U.

[0148] Option 1, reference Fig.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 solution, the surface of the first dimming layer 102 located in the display area 1011a away from the display substrate has a convex structure. The orthographic projection of the convex structure T on the display substrate 101 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 convex structure T.

[0150] refer to Fig.10 The shape of the protruding structure T may be approximately trapezoidal, and the approximately trapezoidal may refer to a standard trapezoid or a non-standard trapezoid whose surface is curved due to process reasons.

[0151] Option 2, reference Fig.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 arranged at intervals. 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] refer to Fig.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 whose surface is curved due to process reasons.

[0154] Option 3, reference Fig.18 , 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. Fig.18For example, the depth of the groove structure U is smaller than the thickness of the first dimming layer 102 .

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

[0156] refer to Figure 1 , Figure 3 , Figures 7 to 14 as well as Figure 18 to Figure 18 The display panel 10 further includes a cover plate 107, and the cover plate 107 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. Figure 1 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 materials of the first organic layer 10111 and the second organic layer 10113 may be polyimide (PI).

[0158] Figure 1 The illustrated dicing road may be located between the hole region 1011 a and the transition region 1011 b , and the dicing road may refer to a dicing area reserved for cutting and forming the hole region 1011 a . Fig.11 The cutting road shown may be located on a side of the peripheral region 1011d away from the display region 1011a, and the cutting road may refer to a cutting region reserved for cutting to form an 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 light emitted in the forward direction of the pixel unit and improve the display effect of the display panel. In addition, since the thickness of the second dimming layer located in the first target area of ​​the transition area 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, it is possible to avoid the second dimming layer from expanding too much, 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] Fig.19is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Fig.19 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 only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope 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 6, 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 6, 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 6, characterized in that: The refractive index of the first dimming layer is less than the refractive index of the second 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 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.

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