Display panel and display apparatus comprising same

Abstract

A display panel, comprising a display substrate, a plurality of first touch-control structures and a plurality of second touch-control structures. A display region of the display substrate has a curved region. The plurality of first touch-control structures extend in a first direction. The first touch-control structures comprise a plurality of first touch-control electrodes and a plurality of first connecting portions, wherein the plurality of first touch-control electrodes are arranged in at least one column, and the at least one column of first touch-control electrodes are connected by means of the first connecting portions. The plurality of second touch-control structures extend in a second direction. The second touch-control structures each comprise a plurality of second touch-control electrodes and a plurality of second connecting portions, wherein the plurality of second touch-control electrodes are arranged in at least one row, and the at least one row of second touch-control electrodes are connected by means of the second connecting portions. The orthographic projections of the second connecting portions on the display substrate partially overlap with the orthographic projections of the first connecting portions on the display substrate, and overlapping regions are bridge sub-regions. At least one bridge sub-region is located in the curved region, and in the bridge sub-region of the curved region, the radius of curvature of the display substrate is greater than or equal to 4.5 mm.

Description

Display panel and display device thereof Technical Field

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

[0002] With the rapid development of display technology, display devices have become increasingly ubiquitous in people's lives. Organic Light Emitting Diodes (OLEDs) are widely used in smart products such as mobile phones, televisions, and laptops due to their advantages such as self-luminescence, low power consumption, wide viewing angle, fast response, high contrast, and flexible display.

[0003] Public content

[0004] In one aspect, a display panel is provided. The display panel includes a display substrate, multiple first touch structures, and multiple second touch structures. The display substrate has a light-emitting side and a non-light-emitting side. The display area of ​​the display substrate has a curved surface area. The multiple first touch structures are disposed on the light-emitting side of the display substrate and extend along a first direction. The first touch structure includes multiple first touch electrodes and multiple first connecting portions. The multiple first touch electrodes are arranged in at least one column, each column including at least two first touch electrodes spaced apart along the first direction, and the first touch electrodes in at least one column are connected via the first connecting portion.

[0005] The plurality of second touch structures are disposed on the light-emitting side of the display substrate and extend along a second direction. The second direction intersects the first direction. The second touch structure includes a plurality of second touch electrodes and a plurality of second connecting portions. The plurality of second touch electrodes are arranged in at least one row, each row including at least two second touch electrodes spaced apart along the second direction, and the second touch electrodes in at least one row are connected by the second connecting portions. The first touch electrodes and the second touch electrodes are disposed on the same layer, and the first touch electrode is also disposed on the same layer as the first connecting portion or the second connecting portion.

[0006] The second connecting portion and the first connecting portion overlap in an orthographic projection of the display substrate, and the overlapping area is a cross-bridge sub-region. At least one of the cross-bridge sub-regions is located in the curved surface region, and in the cross-bridge sub-region of the curved surface region, the curvature radius of the display substrate is greater than or equal to 4.5 mm.

[0007] In some embodiments, the display substrate includes a planar region and a curved region located on at least one side of the planar region. An area where one first touch structure and one second touch structure intersect is a sensing region, and the plurality of first touch structures and the plurality of second touch structures form a plurality of sensing regions arranged in an array.

[0008] The outermost sensing region of the plurality of sensing regions is a peripheral sensing region, and the remaining sensing regions that are not adjacent to the peripheral sensing region are central sensing regions. The central sensing region is located in a planar region, and at least one of the peripheral sensing regions overlaps with the curved region. The number of cross-bridge sub-regions in the peripheral sensing regions overlapping with the curved region is less than or equal to the number of cross-bridge sub-regions in the central sensing region.

[0009] In some embodiments, the peripheral sensing area at a corner is a corner sensing area, and the corner sensing area overlaps with the curved surface area. In the corner sensing area, along the first direction, the first touch electrode extends to the boundary of the corner sensing area. Furthermore, along the second direction, the second touch electrode is located on a side of the first touch electrode that is closer to the adjacent peripheral sensing area. Alternatively, in the corner sensing area, along the second direction, the second touch electrode extends to the boundary of the corner sensing area. Furthermore, along the first direction, the first touch electrode is located on at least one side of the second touch electrode.

[0010] In some embodiments, along the second direction, the curved area is located at least on opposite sides of the planar area. The curved area includes a first sub-curved area connected to the planar area, and the curvature radius of the first sub-curved area of ​​the display substrate decreases along a direction perpendicular to a boundary of the planar area and pointing from the planar area to the curved area.

[0011] The peripheral sensing regions located on opposite sides of the central sensing region along the second direction are first side sensing regions, and the first side sensing regions overlap with the first sub-curved region. The plurality of first touch electrodes of the first touch sensing structure are arranged in at least two columns, and at least one column farthest from the central sensing region is a first target column.

[0012] In the first side sensing area, in the first direction, the first touch electrodes in at least one column outside the first target column are all connected via the first connecting portion. In the first direction, the first touch electrodes in the first target column are separated by the second touch electrodes. Furthermore, in the second direction, the first touch electrodes in the first target column are connected to adjacent first touch electrodes.

[0013] In some embodiments, the first side sensing region includes multiple first sensing regions and multiple second sensing regions, with the multiple second sensing regions located on opposite sides of the multiple first sensing regions along the first direction. In the first sensing region, in the first direction, the first touch electrodes in each column other than the first target column are connected by the first connecting portion. Furthermore, in the second direction, the first touch electrodes in different columns other than the first target column are separated by the second touch electrodes.

[0014] In some embodiments, the first side sensing region includes a plurality of first sensing regions and a plurality of second sensing regions, wherein the plurality of second sensing regions are located on opposite sides of the plurality of first sensing regions along the first direction. The plurality of first touch electrodes of the first touch structure are arranged in at least three columns, and a column adjacent to the first target column is a second target column.

[0015] In the second sensing area, in the first direction, the first target column and the first touch electrodes in each column other than the second target column are connected by the first connecting portion. Furthermore, in the second direction, the first target column and the first touch electrodes in different columns other than the second target column are separated by the second touch electrodes.

[0016] Furthermore, among the first touch electrodes in the second target column, the first touch electrode farthest from the first sensing area is the first target touch electrode. In the first direction, the first target touch electrode is separated from the adjacent first touch electrode by the second touch electrode. Furthermore, in the second direction, the first target touch electrode is connected to the adjacent first touch electrode. Alternatively, one end of the first target touch electrode extends in the first direction to a boundary of the second sensing area away from the first sensing area, and the other end extends in the first direction to the adjacent first touch electrode.

[0017] In some embodiments, the curved surface region further includes a second sub-curved surface region, the second sub-curved surface region being located on a side of the first sub-curved surface region away from the planar surface region. The curvature radius of the second sub-curved surface region of the display substrate increases sequentially along a direction perpendicular to a boundary of the planar surface region and from the planar surface region toward the curved surface region.

[0018] In some embodiments, along the first direction, the curved region is located on at least two opposite sides of the planar region. The curved region includes a third sub-curved region connected to the planar region. The radius of curvature of the third sub-curved region of the display substrate decreases along a direction perpendicular to the boundary of the planar region and pointing from the planar region to the curved region. Peripheral sensing regions located on opposite sides of the central sensing region along the first direction are second side sensing regions, and the second side sensing regions overlap with the third sub-curved region.

[0019] In the second side sensing region, in the first direction, a distance between a boundary of the second side sensing region away from the central sensing region and the nearest first connection portion is greater than a distance between a boundary corresponding to the central sensing region and the nearest first connection portion.

[0020] In some embodiments, the second side sensing region includes a plurality of third sensing regions and a plurality of fourth sensing regions, wherein the plurality of fourth sensing regions are located on opposite sides of the plurality of third sensing regions along the first direction. In the third sensing region, along the first direction, each column of the first touch electrodes is connected by the first connecting portion. Furthermore, along the second direction, adjacent first touch electrodes are separated by the second touch electrodes.

[0021] In some embodiments, the second side sensing region includes a plurality of third sensing regions and a plurality of fourth sensing regions, wherein the plurality of fourth sensing regions are located on opposite sides of the plurality of third sensing regions along the first direction. The plurality of first touch electrodes of the first touch structure are arranged in at least three columns, and in the fourth sensing region, at least one column of first touch electrodes farther away from the third sensing regions is a third target column.

[0022] In the fourth sensing area, in the first direction, the first touch electrodes in each column other than the third target column are connected by the first connecting portion, and in the second direction, the first touch electrodes in different columns other than the third target column are separated by the second touch electrodes.

[0023] Furthermore, among the first touch electrodes in the third target column, the first touch electrode farthest from the central sensing area is a second target touch electrode. In the first direction, the second target touch electrode is separated from the adjacent first touch electrode by the second touch electrode. Furthermore, in the second direction, the second target touch electrode is connected to the adjacent first touch electrode. Alternatively, one end of the second target touch electrode extends in the first direction to a boundary of the fourth sensing area away from the central sensing area, and the other end extends in the first direction to the adjacent first touch electrode.

[0024] In some embodiments, one of the plurality of corner sensing regions is a target corner sensing region, and a fourth sensing region adjacent to the target corner sensing region is a target fourth sensing region.

[0025] In the target corner sensing area, along the second direction, the second touch electrode extends to the boundary of the target corner sensing area. And along the first direction, the first touch electrode is located on a side of the second touch electrode away from the adjacent peripheral sensing area and extends to the boundary of the target corner sensing area.

[0026] In the target fourth sensing area, a column of first touch electrodes near the target corner sensing area is a fourth target column. Among the first touch electrodes in the fourth target column, the first touch electrode farthest from the center sensing area is a third target touch electrode. In the first direction, the third target touch electrode is connected to the adjacent first touch electrode via the first connecting portion. Furthermore, in the second direction, the third target touch electrode is directly connected to the first touch electrode in the target corner sensing area.

[0027] In some embodiments, along the first direction, the sensing area adjacent to the target fourth sensing area is a fifth sensing area. In the fifth sensing area, the column of first touch electrodes farthest from the central sensing area is a fifth target column. Among the first touch electrodes in the fifth target column, the first touch electrode closest to the target fourth sensing area is a fourth target touch electrode. In the first direction, the fourth target touch electrode is separated from the adjacent first touch electrode by the second touch electrode and is connected to the third target touch electrode. In the second direction, the fourth target touch electrode is directly connected to the adjacent first touch electrode in the peripheral sensing area.

[0028] In some embodiments, the third target touch electrode and the fourth target touch electrode are connected through at least two first connecting portions.

[0029] In some embodiments, the curved surface region further includes a fourth sub-curved surface region, the fourth sub-curved surface region being located on a side of the third sub-curved surface region away from the planar surface region. The radius of curvature of the fourth sub-curved surface region of the display substrate increases sequentially along a direction perpendicular to a boundary of the planar surface region and from the planar surface region toward the curved surface region.

[0030] In some embodiments, in the central sensing area, along the first direction, the first touch electrodes in each column are connected by the first connecting portion, and along the second direction, adjacent first touch electrodes are separated by the second touch electrodes.

[0031] In some embodiments, in the same sensing area, the first touch structure and the second touch structure have the same area.

[0032] In some embodiments, the display substrate includes a planar region and a curved region located on at least one side of the planar region. The curved region includes a fifth sub-curved region and a sixth sub-curved region, which are sequentially connected. The fifth sub-curved region is located between the sixth sub-curved region and the planar region. The sixth sub-curved region includes a first dividing line, and the display substrate has a minimum radius of curvature at the first dividing line. The radius of curvature of the curved region decreases along a direction perpendicular to the first dividing line and from the boundary of the planar region to the first dividing line. The bridge sub-region is located in the planar region and / or the fifth sub-curved region.

[0033] In some embodiments, a distance between a boundary of the fifth sub-curved surface region and the first dividing line is greater than or equal to 0.3 mm.

[0034] In some embodiments, along a direction parallel to a planar region of the display substrate and perpendicular to the first dividing line, a ratio of a distance between the first dividing line and an edge of the display substrate to a width of the curved region is 0 to 0.5.

[0035] In some embodiments, the plurality of first touch electrodes of the first touch structure include a plurality of first electrode patterns and a plurality of second electrode patterns, the plurality of first electrode patterns and the plurality of second electrode patterns being alternately arranged in the first direction, and a first electrode pattern and a second electrode pattern being connected by a first connecting portion. The second electrode pattern includes an electrode body and electrode branches, the electrode branches being arranged on opposite sides of the electrode body along the second direction and connected to the electrode body.

[0036] In some embodiments, the area defined by the boundary between the first touch structure and the second touch structure is a touch area. The display panel further includes a first residual electrode pattern and a third connecting portion. The first residual electrode pattern is a portion of the first touch structure where the electrode branches and electrode body of the second electrode pattern are interrupted by the boundary of the touch area, and the electrode branches remain. The first residual electrode pattern is connected to the corresponding electrode body or first electrode pattern of the first touch structure via the third connecting portion.

[0037] In some embodiments, the area defined by the boundary between the first touch structure and the second touch structure is a touch area. The display panel further includes a second residual electrode pattern, the second residual electrode pattern being a portion of one of the first touch structures intercepted by the boundary of the touch area. The second residual electrode pattern is connected to another adjacent first touch structure.

[0038] In another aspect, a display device is provided, comprising the display panel according to any one of the above embodiments and a circuit board, wherein the circuit board is connected to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0040] FIG1 is a structural diagram of a display device according to some embodiments;

[0041] FIG2 is a structural diagram of another display device according to some embodiments;

[0042] FIG3 is a structural diagram of another display device according to some embodiments;

[0043] FIG4 is a structural diagram of yet another display device according to some embodiments;

[0044] FIG5 is a cross-sectional view of the display device shown in FIG1 along section line EE;

[0045] FIG6 is a top view of a display panel according to some embodiments;

[0046] FIG7 is a cross-sectional view of the display panel shown in FIG6 along section line FF;

[0047] FIG8 is a top view of another display panel according to some embodiments;

[0048] FIG9 is a partial enlarged view of the peripheral sensing area of ​​the display panel shown in FIG8 ;

[0049] FIG10 is a partial enlarged view of a central sensing area of ​​a display panel according to some embodiments;

[0050] FIG11 is a partial enlarged view of a corner sensing area of ​​a display panel according to some embodiments;

[0051] FIG12 is a partial enlarged view of another corner sensing area of ​​a display panel according to some embodiments;

[0052] FIG13 is a partial enlarged view of another corner sensing area of ​​a display panel according to some embodiments;

[0053] FIG14 is a partial enlarged view of yet another corner sensing area of ​​a display panel according to some embodiments;

[0054] FIG15 is a partial enlarged view of a first sensing area of ​​a display panel according to some embodiments;

[0055] FIG16 is a partially enlarged view of another first sensing area of ​​a display panel according to some embodiments;

[0056] FIG17 is a partial enlarged view of a second sensing area of ​​a display panel according to some embodiments;

[0057] FIG18 is a partial enlarged view of another second sensing area of ​​a display panel according to some embodiments;

[0058] FIG19 is a partial enlarged view of another second sensing area of ​​a display panel according to some embodiments;

[0059] FIG20 is a partial enlarged view of yet another second sensing area of ​​a display panel according to some embodiments;

[0060] FIG21 is a partial enlarged view of a third sensing area of ​​a display panel according to some embodiments;

[0061] FIG22 is a partial enlarged view of another third sensing area of ​​a display panel according to some embodiments;

[0062] FIG23 is a partial enlarged view of a fourth sensing area of ​​a display panel according to some embodiments;

[0063] FIG24 is a partial enlarged view of another fourth sensing area of ​​a display panel according to some embodiments;

[0064] FIG25 is a partial enlarged view of yet another fourth sensing area of ​​a display panel according to some embodiments;

[0065] FIG26 is a partial enlarged view of yet another fourth sensing area of ​​a display panel according to some embodiments;

[0066] FIG27 is a partial enlarged view of a fifth sensing area of ​​a display panel according to some embodiments;

[0067] FIG28 is a partial enlarged view of a plurality of sensing areas adjacent to a target corner sensing area of ​​a display panel according to some embodiments;

[0068] FIG29 is a partially enlarged view of the center of another display panel according to some embodiments;

[0069] FIG30 is a partial enlarged view of a photosensitive hole edge and a peripheral edge of a display panel according to some embodiments;

[0070] FIG31 is a partial enlarged view of a peripheral edge of a display panel according to some embodiments;

[0071] FIG32 is another partial enlarged view of the edge of the photosensitive hole and the peripheral edge of a display panel according to some embodiments;

[0072] FIG33 is another partially enlarged view of a peripheral edge of a display panel according to some embodiments;

[0073] FIG. 34 is another partially enlarged view of a peripheral edge of a display panel according to some embodiments. DETAILED DESCRIPTION

[0074] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0075] In the description of the present disclosure, the terms "center", "up", "down", "left", "right", "inside", "outside", etc. indicate directions or positional relationships that may be based on the directions or positional relationships shown in the accompanying drawings, or may be based on the sequence of process steps. These terms are only used to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present disclosure.

[0076] In the context of this disclosure, the meanings of “on,” “over,” and “over” should be interpreted in the broadest manner, so that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers, and “over” or “over” means not only “over” or “above” something, but also includes “over” or “above” something with no intervening features or layers (i.e., directly on something).

[0077] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0078] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0079] When describing some embodiments, the word "connected" and its derivatives may be used. The term "connected" should be understood broadly. For example, "connected" can mean mechanical or electrical connection; fixed or removable connection; or integral connection; direct connection or indirect connection through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on the specific circumstances.

[0080] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0081] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0082] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0083] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0084] As used herein, "parallel" and "perpendicular" include the conditions described and conditions similar to the conditions described, and the range of the similar conditions is within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range for approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range for approximate perpendicularity can also be, for example, a deviation within 5°.

[0085] It will be understood that when a layer or element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present therebetween.

[0086] Exemplary embodiments are described herein with reference to cross-sectional and / or plan views that are idealized exemplary drawings. In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Therefore, the exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include deviations in shape due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0087] In this specification, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. It will be further understood that, unless expressly defined herein, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted as an ideal or overly formal meaning.

[0088] The term "opposite" means that the first element may be directly or indirectly opposite to the second element. In the case where a third element is interposed between the first and second elements, the first and second elements may be understood to be indirectly opposite to each other although they are still opposite to each other.

[0089] As shown in FIG. 1 , some embodiments of the present disclosure provide a display device 1000 , which may be any device that displays an image, whether in motion (eg, video) or stationary (eg, still image), and whether textual or graphic.

[0090] For example, referring to FIG1 , the display device 1000 can be any product or component with a display function, such as a television, a laptop computer, a tablet computer, a mobile phone, a personal digital assistant (PDA), a navigator, a car display, a flight display, a wearable device, a virtual reality (VR) device, or the like.

[0091] For example, as shown in FIG1 , the display device 1000 may be a portable display product; for example, the display device 1000 may be the mobile phone shown in FIG1 . For another example, referring to FIG2 , the display device 1000 may be a wearable device; for example, the display device 1000 may be the watch shown in FIG2 .

[0092] Depending on different application scenarios, referring to Figures 3 and 4 , the display device 1000 can be any of a curved display device, a foldable display device, or a rollable display device. Furthermore, the display surface of the display device 1000 can be substantially circular, elliptical, polygonal, or irregular in shape, which is not specifically limited in the present disclosure.

[0093] In this document, "substantially circular or elliptical" means that the shape is generally circular or elliptical, but is not limited to a perfect circle or ellipse. Specifically, "circular or elliptical" includes not only substantially circular or elliptical shapes, but also shapes similar to circles or ellipses. For example, "circular or elliptical" includes not only curves with uniform curvature throughout, but also smooth curves. In other words, a circle or ellipse may include multiple end-to-end broken line segments that approximate an arc shape.

[0094] In this document, "substantially polygonal" means that the shape is generally polygonal, but is not limited to a standard polygon. That is, "polygonal" here includes not only basic polygonal shapes but also shapes similar to polygons. For example, if two adjacent sides of a polygon are curved at each intersection (i.e., at a corner), the corners are smooth, and the shape is a rounded polygon.

[0095] 5 , a display device 1000 includes a display panel 100 . The display panel 100 may include a display side and a non-display side disposed opposite each other. The display side refers to the side of the display panel 100 that displays an image, and the non-display side refers to the side opposite the display side.

[0096] The display panel 100 may be of various types and may be selected based on actual needs. For example, the display panel 100 may be an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (QLED) display panel, a micro light emitting diode (MicroLED) display panel, etc., and the present disclosure does not impose any specific limitations thereon.

[0097] The following takes the display panel 100 as an OLED display panel as an example to schematically illustrate some embodiments of the present disclosure. Other display panels may also be considered as long as the same technical concept is applied.

[0098] In some embodiments, referring to FIG5 , the display device 1000 may further include a housing 200 , a cover 300 , a circuit board 400 , a photosensitive device 500 , and other electronic components. The display panel 100 , the circuit board 400 , and the photosensitive device 500 may be disposed within the housing 200 .

[0099] For example, as shown in Figure 5, the shell 200 can be a box-shaped structure with an opening, the display panel 100, the circuit board 400 and the photosensitive device 500 can be arranged in the shell 200, and the cover plate 300 is arranged on the display side of the display panel 100 and is located at the opening of the shell 200.

[0100] The circuit board 400 can be bonded to the display panel 100 at its end and bent to the back of the display panel 100 to reduce the bezel of the display panel 100 and increase the screen-to-body ratio. The photosensitive device 500 can be integrated directly below the non-display side of the display panel 100 to reduce the bezel of the display panel 100 and increase the screen-to-body ratio.

[0101] It should be noted that the photosensitive device 500 can be a camera, an infrared sensor, a proximity sensor, an eye tracking module, a face recognition module, etc., and the embodiments of the present disclosure do not make specific limitations here.

[0102] In some embodiments, as shown in FIG. 6 and FIG. 7 , the display panel 100 may include a display substrate 10 and a touch layer 20 .

[0103] The display substrate 10 has a light-emitting side and a non-light-emitting side that are oppositely disposed. The light-emitting side refers to the side of the display substrate 10 that is closer to the display panel 100, and the non-light-emitting side refers to the side opposite the light-emitting side. The touch layer 20 is disposed on the light-emitting side of the display substrate 10.

[0104] Referring to Figures 3 and 4 , the display substrate 10 includes a display area A and a peripheral area N disposed on at least one side of the display area A. The display area A is an area for displaying images and is configured to house multiple sub-pixels. The peripheral area N is an area that does not display images and is configured to house display driver circuits and circuit traces, such as the touch leads 50 mentioned below (see Figure 8 ).

[0105] The plurality of sub-pixels may be arranged in a plurality of rows and columns in the display area A, wherein the plurality of columns include at least two sub-pixels arranged along a first direction X, and the plurality of rows include at least two sub-pixels arranged along a second direction Y. For example, each column includes at least two sub-pixels arranged along the first direction X, and each row includes at least two sub-pixels arranged along the second direction Y. The first direction X intersects the second direction Y, for example, the first direction X is perpendicular to the second direction Y.

[0106] In the following, some embodiments of the present disclosure are schematically described using an example in which the first direction X is perpendicular to the second direction Y. However, the embodiments of the present disclosure are not limited thereto. Other angles such as 70°, 80°, and 85° may also be considered, as long as the same technical concept is applied.

[0107] 7 , the display panel 100 further includes an encapsulation layer 30 disposed on the light-emitting side of the display substrate 10 to reduce the risk of water and oxygen corrosion. The encapsulation layer 30 may be an encapsulation film or an encapsulation substrate.

[0108] In this case, the touch layer 20 can be disposed on the side of the encapsulation layer 30 away from the display substrate 10. For example, the touch layer 20 can be formed directly on the side of the encapsulation layer 30 away from the display substrate 10 using a semiconductor process, that is, no other film layer is disposed between the touch layer 20 and the encapsulation layer 30, which facilitates the thinning and lightening of the display panel 100.

[0109] It should be noted that the touch layer 20 may also be disposed between the encapsulation layer 30 and the display substrate 10 , which is not specifically limited in the embodiment of the present disclosure.

[0110] 6 , the touch layer 20 includes a plurality of first touch structures 21 and a plurality of second touch structures 22. The first touch structures 21 extend along a first direction X, and the second touch structures 22 extend along a second direction Y.

[0111] The first touch structure 21 and the second touch structure 22 are insulated from each other, so that a capacitive node can be formed between the first touch electrode 210 and the second touch electrode 220. The area defined by the boundary between the first touch structure 21 and the second touch structure 22 is the touch area T.

[0112] At this point, the pulse or alternating voltage applied to the first touch sensing structure 21 by the touch sensing chip on the circuit board 400 can induce charge on the second touch sensing structure 22. The amount of induced charge can be susceptible to external influences (e.g., the touch or proximity of a finger). In other words, when a finger touches or approaches a capacitive node, a capacitance change occurs at the capacitive node. The touch sensing chip on the circuit board 400 (see FIG. 5 ) can measure this capacitance change through the second touch sensing structure 22 and, based on the capacitance change measured across the entire touch layer 20, determine the location within the touch area T where the finger touched or approached.

[0113] It is understandable that in order to insulate the first touch structure 21 and the second touch structure 22 from each other, a “bridge” design is performed at the intersection of the first touch structure 21 and the second touch structure 22 .

[0114] Exemplarily, as shown in FIG6 , the first touch structure 21 includes a plurality of first touch electrodes 210 and a plurality of first connecting portions 201 , wherein the plurality of first touch electrodes 210 are arranged in at least one column, each column including at least two first touch electrodes 210 spaced apart along the first direction X, and the first touch electrodes 210 in at least one column are connected via the first connecting portions 201 .

[0115] Furthermore, the second touch structure 22 includes a plurality of second touch electrodes 220 and a plurality of second connecting portions 202 , wherein the plurality of second touch electrodes 220 are arranged in at least one row, each row including at least two second touch electrodes 220 spaced apart along the second direction Y, and the second touch electrodes 220 in at least one row are connected through the second connecting portions 202 .

[0116] On this basis, the first connection portion 201 and the second connection portion 202 overlap in the orthographic projection of the display substrate 10 and are disposed on different layers. The overlapping region of the first connection portion 201 and the second connection portion 202 is the bridge sub-region S. In other words, the first touch electrode 210 and the second touch electrode 220 are disposed on the same layer, and the first touch electrode 210 is also disposed on the same layer as the first connection portion 201 or the second connection portion 202. The following description will be based on an example in which the first touch electrode 210 and the first connection portion 201 are disposed on the same layer, but the embodiments of the present disclosure are not limited to this.

[0117] Here, the first touch electrode 210, the second touch electrode 220, the first connecting portion 201, and the second connecting portion 202 can all be a grid structure, wherein the grids in the grid structure expose at least one sub-pixel to prevent the first touch electrode 210, the second touch electrode 220, the first connecting portion 201, and the second connecting portion 202 from blocking the light output of the sub-pixel. In addition, a dummy electrode D (see FIG9 ) can be provided between the first touch electrode 210 and the second touch electrode 220 arranged in the same layer. The dummy electrode D (see FIG9 ) can also be a grid structure, wherein the grids in the grid structure expose at least one sub-pixel to prevent the dummy electrode D from blocking the light output of the sub-pixel. The grid structure formed by the dummy electrode D, the first touch structure 21, and the second touch structure 22 is evenly distributed, which helps to improve the brightness uniformity of the display panel 100.

[0118] In some embodiments, as shown in FIG. 7 , the touch layer 20 includes a first conductive layer 41 , a second conductive layer 42 , and an insulating layer 43 located between the first conductive layer 41 and the second conductive layer 42 .

[0119] For example, as shown in Figures 6 and 7 , the first conductive layer 41 is further away from the display substrate 10 than the second conductive layer 42. Furthermore, the first touch electrode 210, the second touch electrode 220, and the first connecting portion 201 may be located in the second conductive layer 42, while the second connecting portion 202 is located in the first conductive layer 41. The insulating layer 43 is provided with a plurality of vias, and the second connecting portion 202 is connected to the second touch electrode 220 through the vias.

[0120] However, in curved display devices, foldable display devices, or rollable display devices, the bridges in the related art are evenly distributed, and some of the bridges are located in places with a smaller curvature radius in the display panel, resulting in greater stress concentration on the bridges. The display panel is at greater risk of cracks or breakage at the bridge locations, and the product yield is low.

[0121] Based on this, in the display panel 100 provided in some embodiments of the present disclosure, referring to FIG3 and FIG8 , the display area A of the display substrate 10 includes a curved area B. Here, the display area A including the curved area B may mean that a portion of the curved area B is located in the display area A and another portion is located in the peripheral area N. Of course, the curved area B may also be located entirely in the display area A, and this is not specifically limited in the embodiments of the present disclosure.

[0122] The curved area B includes the curved area of ​​the display substrate 10 and the area where the display substrate 10 can be bent or rolled. That is, when the display device 1000 is a foldable display device or a rollable display device, the curved area B includes the area where the display substrate 10 can be folded or rolled. When the display device 1000 is a curved display device, the curved area B includes the curved area of ​​the display substrate 10.

[0123] On this basis, in combination with Figures 8 and 9 , at least one cross-bridge sub-area S is located in the curved area B. Moreover, in the cross-bridge sub-area S of the curved area B, the curvature radius of the display substrate 10 is greater than or equal to 4.5 mm. In this case, when the cross-bridge sub-area S is located in the curved area B of the display substrate 10, the cross-bridge sub-area S is set in an area with a larger curvature radius (a curvature radius greater than or equal to 4.5 mm), avoiding areas with a smaller curvature radius (for example, a curvature radius less than 4.5 mm), thereby reducing stress concentration in the cross-bridge sub-area S, reducing the risk of cracks or breakage of the display panel 100 in the cross-bridge sub-area S, and improving the production yield of the display panel 100.

[0124] The following uses the display device 1000 as an example of a curved display device to schematically illustrate some embodiments of the present disclosure. However, the implementation of the present disclosure is not limited thereto, and other display devices may also be considered as long as the same technical concept is applied.

[0125] In some embodiments, referring to FIG. 8 , the substrate 10 includes a planar region C and a curved region B located on at least one side of the planar region C. As shown in FIG.

[0126] As shown in Figures 8 and 9, the area where a first touch structure 21 and a second touch structure 22 intersect is a sensing area T10. Multiple first touch structures 21 and multiple second touch structures 22 form a plurality of sensing areas T10 arranged in an array. That is, the touch area T includes multiple sensing areas T10 arranged in an array. Furthermore, within the same sensing area T10, the areas of the first touch structure 21 and the second touch structure 22 can be substantially equal, for example, to improve touch sensitivity.

[0127] On this basis, as shown in FIG8 , the outermost sensing area T10 among the plurality of sensing areas T10 is designated as the peripheral sensing area T11, and the remaining sensing areas T10 not adjacent to the peripheral sensing area T11 are designated as the central sensing area T12. The central sensing area T12 is located in the planar region C, and at least one peripheral sensing area T11 overlaps with the curved region B. The number of cross-bridge sub-areas S in the peripheral sensing area T11 that overlaps with the curved region B is less than or equal to the number of cross-bridge sub-areas S in the central sensing area T12.

[0128] That is, compared to the central sensing area T12 located in the flat area C, the number of cross-bridge sub-areas S in the peripheral sensing area T11 overlapping with the curved area B is reduced. This can reduce the number of cross-bridge sub-areas S in the curved area B, reduce the risk of cracks or breakage of the display panel 100 in the cross-bridge sub-areas S in the curved area B, and improve the production yield of the display panel 100.

[0129] In some examples, referring to Figures 3 and 8 , the substrate 10 includes a planar region C and a curved region B located on at least one side of the planar region C. Figures 3 and 8 illustrate an example in which the curved region B surrounds the planar region C.

[0130] The curved region B includes a fifth sub-curved region B5 and a sixth sub-curved region B6, which are connected in sequence. The fifth sub-curved region B5 is located between the sixth sub-curved region B6 and the flat region C. The sixth sub-curved region B6 includes a first boundary line L1. The curvature radius of the display substrate 10 at the first boundary line L1 is the smallest. For example, the curvature radius of the display substrate 10 at the first boundary line L1 is 4 mm.

[0131] The following uses the example of a curved area B surrounding a flat area C to schematically illustrate some embodiments of the present disclosure. However, the embodiments of the present disclosure are not limited thereto, and it is also possible to consider that the curved area B is located on opposite sides of the flat area C along the first direction X or along the second direction Y, as long as the same technical concept is applied.

[0132] The radius of curvature of the curved surface area B decreases sequentially along a direction perpendicular to the first dividing line L1 and from the boundary of the planar area C toward the first dividing line L1. Herein, "successively decreases" includes a gradual decrease, i.e., the change in the radius of curvature is continuous. For example, along a direction perpendicular to the first dividing line L1 and from the boundary of the planar area C toward the first dividing line L1, the radius of curvature exhibits a linear relationship with the distance between the boundary of the planar area C and the first dividing line L1. "Successively decreases" may also include a step-by-step decrease, i.e., the change in the radius of curvature may occur in stages of stability or in stages of abrupt changes.

[0133] In this case, the bridge sub-region S can be located, for example, in the flat area C and / or the fifth curved sub-region B5. In this case, the bridge sub-region S can avoid areas with a smaller radius of curvature, that is, the radius of curvature at the location of the bridge sub-region S is larger. This can reduce the risk of cracks or breakage in the display panel 100 in the bridge sub-region S, thereby improving the production yield of the display panel 100.

[0134] For example, referring to Figures 3 and 8 , the distance between the boundary of the fifth sub-curved region B5 and the first dividing line L1 is greater than or equal to 0.3 mm. For example, the distance between the boundary of the fifth sub-curved region B5 and the first dividing line L1 is 0.3 mm, so that the radius of curvature of the fifth sub-curved region B5 is relatively large. For example, the radius of curvature of the fifth sub-curved region B5 is greater than or equal to 4.5 mm. In this way, the bridge sub-region S can be located at any position within the fifth sub-curved region B5, and the stress concentration within the bridge sub-region S within the fifth sub-curved region B5 is relatively low, thereby reducing the risk of cracks or fractures in the display panel 100 within the bridge sub-region S within the fifth sub-curved region B5.

[0135] 3 and 8 , along a direction parallel to the planar region C of the display substrate 10 and perpendicular to the first dividing line L1 , a ratio of a distance between the first dividing line L1 and the boundary of the display substrate 10 to a width of the curved region C is 0 to 0.5.

[0136] Exemplarily, along a direction parallel to the planar area C of the display substrate 10 and perpendicular to the first dividing line L1, the ratio of the distance between the first dividing line L1 and the boundary of the display substrate 10 to the width of the curved area C is any one of 0, 0.1, 0.2, 0.3, 0.4 and 0.5.

[0137] For example, as shown in FIG3 , the first boundary line L1 substantially coincides with the boundary of the display substrate 10. That is, the distance between the first boundary line L1 and the boundary of the display substrate 10 is zero. In other words, the ratio of the distance between the first boundary line L1 and the boundary of the display substrate 10 to the width of the curved region C is zero; that is, the first boundary line L1 substantially coincides with the boundary of the display substrate 10.

[0138] 8 , the distance between the first boundary line L1 and the boundary of the display substrate 10 is 1.3 mm, and the width of the curved area B is 3.1 mm. That is, the ratio of the distance between the first boundary line L1 and the boundary of the display substrate 10 to the width of the curved area C is approximately 0.4.

[0139] 8 , the sixth sub-curved area B6 may include a first area B61 and a second area B62 , wherein the first area B61 is located between the second area B62 and the fifth sub-curved area B5 , and the first dividing line L1 is located in the first area B61 .

[0140] The radius of curvature of curved area B increases sequentially along a line perpendicular to first dividing line L1 and from first dividing line L1 to the boundary of sixth sub-curved area B6 away from fifth sub-curved area B5. In this context, "sequentially increasing" includes a gradual increase, i.e., the change in the radius of curvature is continuous. For example, along a line perpendicular to first dividing line L1 and from the boundary of planar area C to first dividing line L1, the radius of curvature exhibits a linear relationship with the distance between the boundary of planar area C and first dividing line L1. "Sequentially increasing" may also include a step-by-step increase, i.e., the change in the radius of curvature may occur in stages of stability or stages of abrupt changes.

[0141] On this basis, the second region B62 is located near the boundary of the first region B61, and the distance between the second region B62 and the first boundary line L1 is greater than or equal to 0.3 mm. For example, the second region B62 is located near the boundary of the first region B61, and the distance between the second region B62 and the first boundary line L1 is 0.3 mm, so that the radius of curvature of the second region B62 is relatively large, for example, the radius of curvature of the second region B62 is greater than or equal to 4.5 mm. In this case, the cross-bridge sub-region S can be located at any position in the second region B62, and the stress concentration of the cross-bridge sub-region S in the second region B62 is relatively small, thereby reducing the risk of cracks or fractures in the cross-bridge sub-region S in the second region B62 of the display panel 100.

[0142] In some embodiments, referring to Figures 8 and 10 , in the central sensing area T12, along the first direction X, each column of first touch electrodes 210 is connected by a first connecting portion 201. Furthermore, along the second direction Y, adjacent first touch electrodes 210 are separated by second touch electrodes 220. In other words, in the central sensing area T12, along the first direction X, a bridge sub-region S exists between every two adjacent first touch electrodes 210.

[0143] In some embodiments, referring to FIG. 8 and FIG. 9 , the peripheral sensing region T11 located at a corner is a corner sensing region T110 , and the corner sensing region T110 overlaps with the curved region B.

[0144] In some examples, as shown in FIG9 , FIG11 , and FIG12 , in the corner sensing region T110 , the first touch electrode 210 extends to the boundary of the corner sensing region T110 along the first direction X. Furthermore, along the second direction Y, the second touch electrode 220 is located on a side of the first touch electrode 210 that is close to the adjacent peripheral sensing region T11.

[0145] In this case, the corner sensing area T110 does not have a cross-bridge sub-area S, which can reduce the risk of cracks or breakage in the display panel 100 in the corner sensing area T110. Furthermore, in the corner sensing area T110, the first touch electrode 210 and the second touch electrode 220 can be connected to the first touch electrode 210 and the second touch electrode 220 of the adjacent peripheral sensing area T11, thereby increasing the area of ​​the touch area T and improving the touch sensitivity at the corners of the display panel 100. Furthermore, the first touch structure 21 to which the first touch electrode 210 belongs can be extended from one side of the display substrate 10 in the first direction X and connected to the corresponding touch lead 50.

[0146] In other examples, as shown in FIG9 , FIG13 , and FIG14 , in the corner sensing region T110 , the second touch electrode 220 extends to the boundary of the corner sensing region T110 along the second direction Y. Furthermore, along the first direction X, the first touch electrode 210 is located on at least one side of the second touch electrode 220 .

[0147] For example, as shown in Figures 9 and 13 , along the first direction X, the first touch electrode 210 is located on a side of the second touch electrode 220 that is close to the adjacent peripheral sensing area T11. For another example, as shown in Figures 9 and 14 , along the first direction X, the first touch electrode 210 is located on a side of the second touch electrode 220 that is away from the adjacent peripheral sensing area T11.

[0148] In this case, the corner sensing area T110 does not have a cross-bridge sub-area S, which reduces the risk of cracks or breakage in the display panel 100 in the corner sensing area T110. Furthermore, in the corner sensing area T110, the first touch electrode 210 and the second touch electrode 220 can be connected to the first touch electrode 210 and the second touch electrode 220 of the adjacent peripheral sensing area T11, thereby increasing the area of ​​the touch area T and improving touch sensitivity at the corners of the display panel 100. Furthermore, the second touch structure 22 to which the second touch electrode 220 belongs can be extended from one side of the display substrate 10 in the second direction Y and connected to the corresponding touch lead 50.

[0149] In some embodiments, referring to FIG. 3 and FIG. 8 , along the second direction Y, the curved region B is located on at least two opposite sides of the planar region C. The curved region B includes a first sub-curved region B1 connected to the planar region C. Along a direction perpendicular to the boundary of the planar region C and pointing from the planar region C to the curved region B, the radius of curvature of the first sub-curved region B1 of the display substrate 10 decreases sequentially.

[0150] 8 , the curved region B may further include a second sub-curved region B2, which is located on a side of the first sub-curved region B1 away from the planar region C. Along a direction perpendicular to the boundary of the planar region C and pointing from the planar region C to the curved region B, the radius of curvature of the second sub-curved region B2 of the display substrate 10 increases sequentially.

[0151] It should be noted that the boundary line between the first sub-curved area B1 and the second sub-curved area B2 may be the above-mentioned first boundary line L1.

[0152] On this basis, as shown in Figures 8 and 9 , the peripheral sensing regions T11 located on opposite sides of the central sensing region T12 along the second direction Y are first side sensing regions T120. The first side sensing regions T120 overlap with the first sub-curved region B1. Furthermore, the plurality of first touch electrodes 210 of the first touch sensing structure 21 are arranged in at least two columns, with the at least one column farthest from the central sensing region T12 being the first target column M1.

[0153] The following uses the row farthest from the central sensing area T12 as the first target row M1 as an example to schematically illustrate some embodiments of the present disclosure. However, the embodiments of the present disclosure are not limited thereto, and it is also possible to consider having two or three first target rows M1, as long as the same technical concept is applied.

[0154] Referring to Figures 9, 15, and 20, in the first side sensing area T120, in the first direction X, at least one column of first touch electrodes 210 outside the first target column M1 are connected via first connectors 201 to receive and transmit touch signals. In the first direction X, the first touch electrodes 210 in the first target column M1 are separated by second touch electrodes 220. Furthermore, in the second direction Y, the first touch electrodes 210 in the first target column M1 are connected to adjacent first touch electrodes 210 to receive touch signals, thus achieving touch sensing.

[0155] It should be noted that, as shown in FIG15 , virtual electrodes D may be further provided between adjacent first touch electrodes 210 in the second direction Y; and as shown in FIG16 , virtual electrodes D may be further provided between adjacent first touch electrodes 210 in the first target column M1 in the first direction X to balance the areas of the first touch structures 21 and the second touch structures 22 within the same first side sensing region T120.

[0156] In this case, the first connecting portions 201 between the first touch electrodes 210 in the first target row M1 are eliminated, reducing the number of bridge sub-regions S in the first sub-curved area B1 and lowering the risk of cracks or fractures in the display panel 100. Furthermore, the bridge sub-regions S in the first side sensing area T120, which have a smaller radius of curvature, are eliminated, further reducing the risk of cracks or fractures in the bridge sub-regions S in the first sub-curved area B1 and improving the production yield of the display panel 100.

[0157] 9 , the first side sensing region T120 includes a plurality of first sensing regions T121 and a plurality of second sensing regions T122 . Along the first direction X, the plurality of second sensing regions T122 are located on opposite sides of the plurality of first sensing regions T121 .

[0158] As shown in Figures 15 and 16 , in the first sensing area T121, in the first direction X, the first touch electrodes 210 in each column other than the first target column M1 are connected by the first connecting portion 201. Furthermore, in the second direction Y, the first touch electrodes 210 in different columns other than the first target column M1 are separated by the second touch electrodes 220. Figures 15 and 16 illustrate an example in which the first touch electrodes 210 of the first touch structure 21 are arranged in three columns.

[0159] 17 to 20 , the plurality of first touch electrodes 210 of the first touch structure 21 are arranged in at least three columns, with the column adjacent to the first target column M1 being the second target column M2. The following uses the arrangement of the first touch electrodes 210 in three columns as an example to schematically illustrate some embodiments of the present disclosure. However, the present disclosure is not limited thereto, and arrangements of four, five, or more columns are also contemplated, as long as the same technical concepts are applied.

[0160] As shown in Figures 17 to 20, in the second sensing area T122, in the first direction X, the first touch electrodes 210 in each column other than the first target column M1 and the second target column M2 are connected by the first connecting portion 201. In the second direction Y, the first touch electrodes 210 in each column other than the first target column M1 and the second target column M2 are separated by the second touch electrodes 220.

[0161] In some examples, as shown in Figures 17, 19, and 20, among the first touch electrodes 210 of the second target column M2, the first touch electrode 210 farthest from the first sensing area T121 is the first target touch electrode 211. In the first direction X, the first target touch electrode 211 is separated from the adjacent first touch electrodes 210 by the second touch electrode 220, and in the second direction Y, the first target touch electrode 211 is connected to the adjacent first touch electrodes 210.

[0162] On this basis, referring to FIG. 17 , FIG. 19 , and FIG. 20 , in the first direction X, the other first touch electrodes 210 in the second target column M2 can be connected via the first connecting portion 201. In the second direction Y, the other first touch electrodes 210 in the second target column M2 can be separated by the second touch electrodes 220 or connected to adjacent first touch electrodes 210.

[0163] In other examples, as shown in FIG18 , one end of the first target touch electrode 211 extends in the first direction X to the boundary of the second sensing area T122 away from the first sensing area T121, and the other end extends in the first direction X to the adjacent first touch electrode 210. In the second direction Y, the first target touch electrode 211 may be separated from the adjacent first touch electrode 210 by the second touch electrode 220, or may be connected to the adjacent first touch electrode 210.

[0164] 18 , in the first direction X, the other first touch electrodes 210 in the second target column M2 can be connected via the first connecting portion 201. In the second direction Y, the other first touch electrodes 210 in the second target column M2 can be separated by the second touch electrodes 220 or connected to adjacent first touch electrodes 210.

[0165] In some embodiments, referring to FIG. 3 and FIG. 8 , along a first direction X, the curved region B is located on at least two opposite sides of the planar region C. The curved region B includes a third sub-curved region B3 connected to the planar region C. Along a direction perpendicular to the boundary of the planar region C and pointing from the planar region C to the curved region B, the radius of curvature of the third sub-curved region B3 of the display substrate 10 decreases.

[0166] 8 , the curved region B may further include a fourth sub-curved region B4, which is located on a side of the third sub-curved region B3 away from the planar region C. Along a direction perpendicular to the boundary of the planar region C and pointing from the planar region C to the curved region B, the radius of curvature of the fourth sub-curved region B4 of the display substrate 10 increases sequentially.

[0167] It should be noted that the boundary line between the third sub-curved area B3 and the fourth sub-curved area B4 can be the first boundary line L1 mentioned above.

[0168] On this basis, as shown in FIG8 and FIG9 , along the first direction X, the peripheral sensing regions T11 located on opposite sides of the central sensing region T12 are second side sensing regions T130 , and the second side sensing regions T130 overlap with the third sub-curved region B3 .

[0169] 9 , 10 , and 21 to 26 , in the second side sensing region T130 , in the first direction X, the distance between the boundary of the second side sensing region T130 away from the central sensing region T12 and the nearest first connection portion 201 is greater than the distance between the boundary corresponding to the central sensing region T12 and the nearest first connection portion 201.

[0170] That is, compared to the central sensing area T12, the position of the bridge sub-region S in the second side sensing area T130 is offset toward the center of the display panel 100, thereby increasing the curvature radius of the bridge sub-region S of the display panel 100, reducing the risk of cracks or breakage of the display panel 100 in the bridge sub-region S of the second side sensing area T130, and improving the production yield of the display panel 100.

[0171] 9 , the second side sensing region T130 includes a plurality of third sensing regions T131 and a plurality of fourth sensing regions T132 . Along the first direction X, the plurality of fourth sensing regions T132 are located on opposite sides of the plurality of third sensing regions T131 .

[0172] As shown in Figures 21 and 22 , in the third sensing area T131 , along the first direction X, the first touch electrodes 210 in each column are connected by the first connecting portion 201 , and along the second direction Y, adjacent first touch electrodes 210 are separated by the second touch electrodes 220 . Figures 21 and 22 illustrate an example in which the first touch electrodes 210 of the first touch structure 21 are arranged in three columns.

[0173] Furthermore, as shown in Figures 23 to 26, the plurality of first touch electrodes 210 of the first touch structure 21 are arranged in at least three columns. In the fourth sensing region T132, at least one column of first touch electrodes 210 farther from the third sensing region T131 is a third target column M3. Figures 23, 24, and 25 illustrate the third target column M3 as two columns, while Figure 26 illustrates the third target column M3 as one column.

[0174] The following takes the arrangement of the first touch electrodes 210 in three columns as an example to schematically illustrate some embodiments of the present disclosure. However, the implementation of the present disclosure is not limited thereto, and four, five, or more columns may also be considered, as long as the same technical concept is applied.

[0175] As shown in FIG. 23 to FIG. 26 , in the fourth sensing area T132 , in the first direction X, the first touch electrodes 210 in each column other than the third target column M3 are connected by the first connecting portion 201 , and in the second direction Y, the first touch electrodes 210 in different columns other than the third target column M3 are separated by the second touch electrodes 220 .

[0176] In some examples, as shown in Figures 23 and 24 , among the first touch electrodes 210 of the third target column M3, the first touch electrode 210 farthest from the central sensing area T12 is the second target touch electrode 212. In the first direction X, the second target touch electrode 212 is separated from the adjacent first touch electrodes 210 by the second touch electrode 220, and in the second direction Y, the second target touch electrode 212 is connected to the adjacent first touch electrodes 210.

[0177] 23 and 24 , in the first direction X, the other first touch electrodes 210 in the third target column M3 can be connected via the first connecting portion 201. In the second direction Y, the other first touch electrodes 210 in the third target column M3 can be separated by the second touch electrodes 220 or connected to adjacent first touch electrodes 210.

[0178] In other examples, as shown in FIG25 and FIG26 , one end of the second target touch electrode 212 extends in the first direction X to the boundary of the fourth sensing area T132 away from the central sensing area T12, and the other end extends in the first direction X to the adjacent first touch electrode 210. In the second direction Y, the second target touch electrode 212 may be separated from the adjacent first touch electrode 210 by the second touch electrode 220, or may be connected to the adjacent first touch electrode 210.

[0179] On this basis, referring to Figures 25 and 26, in the first direction X, the other first touch electrodes 210 in the third target column M3 can be connected through the first connecting portion 201; and in the second direction Y, the other first touch electrodes 210 in the third target column M3 can be separated by the second touch electrodes 220, and can also be connected to adjacent first touch electrodes 210.

[0180] In some embodiments, as shown in FIG. 9 , FIG. 14 and FIG. 26 , one corner sensing area T110 among the plurality of corner sensing areas T110 is a target corner sensing area T111 , and a fourth sensing area T132 adjacent to the target corner sensing area T111 is a target fourth sensing area T1320 .

[0181] As shown in Figures 9 and 14 , in the target corner sensing area T111, the second touch electrode 220 extends to the boundary of the target corner sensing area T111 along the second direction Y. Furthermore, the first touch electrode 210 is located on a side of the second touch electrode 220 away from the adjacent peripheral sensing area T11 (see Figure 8 ) along the first direction X and extends to the boundary of the target corner sensing area T111. In this case, the second touch structure 22 to which the second touch electrode 220 belongs can be extended from one side of the target corner sensing area T111 in the second direction Y and connected to the corresponding touch lead 50. The first touch structure 21 to which the first touch electrode 210 belongs can be extended from one side of the target corner sensing area T111 in the first direction X and connected to the corresponding touch lead 50.

[0182] As shown in Figures 9 and 26 , in the target fourth sensing area T1320, a row of first touch electrodes 210 near the target corner sensing area T111 is the fourth target row M4. Among the first touch electrodes 210 in the fourth target row M4, the first touch electrode 210 farthest from the center sensing area T12 is the third target touch electrode 213. In the first direction X, the third target touch electrode 213 is connected to an adjacent first touch electrode 211 (such as the fourth target touch electrode 214 described below) via a first connecting portion 201. In the second direction Y, the third target touch electrode 213 is directly connected to the first touch electrode 210 in the target corner sensing area T111.

[0183] It should be noted that, in the target fourth sensing area T1320 , in the first direction X, the side of the third target touch electrode 213 away from the central sensing area T12 may also be disposed on the virtual electrode D, which is not specifically limited in the embodiment of the present disclosure.

[0184] On this basis, referring to FIG. 9 , FIG. 27 and FIG. 28 , along the first direction X, the sensing area T10 adjacent to the target fourth sensing area T1320 is the fifth sensing area T140 .

[0185] As shown in Figures 9, 27, and 28, in the fifth sensing region T140, the row of first touch electrodes 210 farthest from the central sensing region T12 is the fifth target row M5. Among the first touch electrodes 210 in the fifth target row M5, the first touch electrode 210 closest to the target fourth sensing region T1320 is the fourth target touch electrode 214. In the first direction X, the fourth target touch electrode 214 is separated from the adjacent first touch electrodes 210 by the second touch electrode 220 and is connected to the third target touch electrode 213. In the second direction Y, the fourth target touch electrode 214 is directly connected to the first touch electrode 210 in the adjacent peripheral sensing region T11.

[0186] In this case, the first touch structure 21 of a column of peripheral sensing areas T11 corresponding to the target corner sensing area T111 can be connected to the first touch electrode 210 of the target corner sensing area T111 through the fourth target touch electrode 214 and the third target touch electrode 213 in sequence, and led out on one side of the target corner sensing area T111 in the first direction X to be connected to the corresponding touch lead 50.

[0187] 26, 27, and 28, the third target touch electrode 213 and the fourth target touch electrode 214 can be connected via at least two first connecting portions 201. The number of first connecting portions 201 between the third target touch electrode 213 and the fourth target touch electrode 214 can be the same as the number of first touch electrodes 210 outside the first target column M1 in the first side sensing area T120.

[0188] For example, as shown in Figures 20, 26, 27, and 28, the first touch electrodes 210 in the first side sensing area T120 are arranged in three columns, and the first target column M1 is one column. That is, the number of columns of first touch electrodes 210 outside the first target column M1 in the first side sensing area T120 is two, and the third target touch electrode 213 is connected to the fourth target touch electrode 214 via two first connecting portions 201. This can make the transmitted touch signal more stable and the touch sensitivity higher.

[0189] In some embodiments, referring to FIG. 29 , the plurality of first touch electrodes 210 of the first touch structure 21 include a plurality of first electrode patterns 61 and a plurality of second electrode patterns 62 . The plurality of first electrode patterns 61 and the plurality of second electrode patterns 62 are alternately arranged in a first direction X. A first electrode pattern 61 and a second electrode pattern 62 are connected via a first connecting portion 201 .

[0190] The second electrode pattern 62 includes an electrode body 621 and electrode branches 622 . Along the second direction Y, the electrode branches 622 are disposed on two opposite sides of the electrode body 621 and connected to the electrode body 621 .

[0191] In some examples, referring to Figures 30 to 33, the display panel 100 further includes a first residual electrode pattern 631. The first residual electrode pattern 631 is a portion of the first touch structure 21 where the electrode branch 622 and the electrode body 621 of the second electrode pattern 62 are cut off by the boundary of the touch area T, and the electrode branch 622 is retained.

[0192] Here, referring to Figures 31 and 33, the boundary of the touch area T includes the circumferential outer boundary of the touch area T. Referring to Figures 30 and 32, the boundary of the touch area T also includes the boundary where the display panel 100 has a photosensitive hole H for transmitting external ambient light, and the first touch structure 21 and the second touch structure 22 avoid the photosensitive hole H.

[0193] For example, as shown in FIG30 , FIG31 and FIG33 , the first residual electrode pattern 631 is a first touch structure 21 in which the electrode branches 622 and the electrode body 621 of the second electrode pattern 62 are cut off by the outer boundary of the touch area T in the circumferential direction, and the electrode branches 622 are retained.

[0194] For another example, as shown in FIG32 , the first residual electrode pattern 631 is a first touch structure 21 in which the electrode branch 622 and the electrode body 621 of the second electrode pattern 62 are cut off by the boundary of the touch area T avoiding the photosensitive hole H, and the electrode branch 622 is retained.

[0195] On this basis, referring to Figures 30 to 33, the display panel 100 further includes a third connecting portion 203, and the first residual electrode pattern 631 is connected to the electrode body 621 or the first electrode pattern 61 of the corresponding first touch structure 21 through the third connecting portion 203, so that the first residual electrode pattern 631 receives touch signals, increases the touch sensing area, and improves the touch sensitivity at the edge of the touch area T.

[0196] It should be noted that the third connection portion 203 may be provided in the same layer as the first touch electrode 210. In addition, the "corresponding first touch structure 21" refers to the first touch structure 21 to which the first residual electrode pattern 631 belongs when it is not cut off.

[0197] In some examples, referring to FIG. 34 , the display panel 100 further includes a second residual electrode pattern 632 , which is a portion of a first touch structure 21 intercepted by a boundary of the touch area T. The second residual electrode pattern 632 is connected to another adjacent first touch structure 21 , so that the second residual electrode pattern 632 receives touch signals, increases the touch sensing area, and improves touch sensitivity at the edge of the touch area T.

[0198] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display panel, comprising: A display substrate having a light-emitting side and a non-light-emitting side; The display area of ​​the display substrate has a curved surface area; a plurality of first touch structures disposed on the light-emitting side of the display substrate and extending along a first direction; the first touch structures comprising a plurality of first touch electrodes and a plurality of first connecting portions, the plurality of first touch electrodes being arranged in at least one column, each column comprising at least two first touch electrodes spaced apart along the first direction, and the first touch electrodes in at least one column being connected via the first connecting portions; a plurality of second touch structures disposed on the light-emitting side of the display substrate and extending along a second direction; the second direction intersecting the first direction; the second touch structures comprising a plurality of second touch electrodes and a plurality of second connecting portions, the plurality of second touch electrodes being arranged in at least one row, each row comprising at least two second touch electrodes spaced apart along the second direction, and the second touch electrodes in at least one row being connected via the second connecting portions; the first touch electrodes and the second touch electrodes being disposed in the same layer, and the first touch electrodes being further disposed in the same layer as the first connecting portion or the second connecting portion; The second connecting portion and the first connecting portion overlap in the orthographic projection portion of the display substrate, and the overlapping area is a cross-bridge sub-area; at least one of the cross-bridge sub-areas is located in the curved surface area, and in the cross-bridge sub-area of ​​the curved surface area, the curvature radius of the display substrate is greater than or equal to 4.5 mm.

2. The display panel according to claim 1, wherein The display substrate includes a flat area and a curved area located on at least one side of the flat area; an area where one first touch structure and one second touch structure intersect is a sensing area, and the multiple first touch structures and the multiple second touch structures form a plurality of sensing areas arranged in an array; The outermost sensing area among the multiple sensing areas is a peripheral sensing area, and the other sensing areas among the remaining sensing areas that are not adjacent to the peripheral sensing area are central sensing areas; the central sensing area is located in the planar area, and at least one of the peripheral sensing areas overlaps with the curved area; the number of the cross-bridge sub-areas in the peripheral sensing area overlapping with the curved area is less than or equal to the number of the cross-bridge sub-areas in the central sensing area.

3. The display panel according to claim 2, wherein: The peripheral sensing area located at the corner is a corner sensing area, and the corner sensing area overlaps with the curved surface area; In the corner sensing area, along the first direction, the first touch electrode extends to the boundary of the corner sensing area; and along the second direction, the second touch electrode is located on a side of the first touch electrode close to the adjacent peripheral sensing area; or, in the corner sensing area, along the second direction, the second touch electrode extends to the boundary of the corner sensing area; and along the first direction, the first touch electrode is located on at least one side of the second touch electrode.

4. The display panel according to claim 2 or 3, wherein: Along the second direction, the curved surface area is located at least on two opposite sides of the planar area; the curved surface area includes a first sub-curved surface area connected to the planar area, and the curvature radius of the first sub-curved surface area of ​​the display substrate decreases in sequence along a direction perpendicular to a boundary of the planar area and pointing from the planar area to the curved surface area; Along the second direction, peripheral sensing regions located on opposite sides of the central sensing region are first side sensing regions, and the first side sensing regions overlap with the first sub-curved region; the plurality of first touch electrodes of the first touch structure are arranged in at least two columns, and at least one column farthest from the central sensing region is a first target column; In the first side sensing area, in the first direction, the first touch electrodes in at least one column outside the first target column are all connected through the first connecting portion; in the first direction, the first touch electrodes in the first target column are separated by the second touch electrodes; and in the second direction, the first touch electrodes in the first target column are connected to adjacent first touch electrodes.

5. The display panel according to claim 4, wherein: The first side sensing area includes a plurality of first sensing areas and a plurality of second sensing areas, and along the first direction, the plurality of second sensing areas are located on opposite sides of the plurality of first sensing areas; In the first sensing area, in the first direction, the first touch electrodes in each column other than the first target column are connected by the first connecting portion; and in the second direction, the first touch electrodes in different columns other than the first target column are separated by the second touch electrodes.

6. The display panel according to claim 4 or 5, wherein: The first side sensing area includes a plurality of first sensing areas and a plurality of second sensing areas, and along the first direction, the plurality of second sensing areas are located on opposite sides of the plurality of first sensing areas; the plurality of first touch electrodes of the first touch structure are arranged in at least three columns, and a column adjacent to the first target column is a second target column; In the second sensing area, in the first direction, the first target column and the first touch electrodes in each column other than the second target column are connected by the first connecting portion; and in the second direction, the first target column and the first touch electrodes in different columns other than the second target column are separated by the second touch electrodes; Moreover, among the first touch electrodes of the second target column, the first touch electrode farthest from the first sensing area is the first target touch electrode; in the first direction, the first target touch electrode and the adjacent first touch electrode are separated by the second touch electrode; and in the second direction, the first target touch electrode is connected to the adjacent first touch electrode; or, one end of the first target touch electrode extends in the first direction to the boundary of the second sensing area away from the first sensing area, and the other end extends in the first direction to the adjacent first touch electrode.

7. The display panel according to any one of claims 4 to 6, wherein: The curved surface area also includes a second sub-curved surface area, which is located on the side of the first sub-curved surface area away from the planar area; along the direction perpendicular to the boundary of the planar area and from the planar area to the curved surface area, the curvature radius of the second sub-curved surface area of ​​the display substrate increases successively.

8. The display panel according to any one of claims 2 to 7, wherein: Along the first direction, the curved surface area is located at least on two opposite sides of the planar area; the curved surface area includes a third sub-curved surface area connected to the planar area, and the curvature radius of the third sub-curved surface area of ​​the display substrate decreases in sequence along a direction perpendicular to a boundary of the planar area and from the planar area to the curved surface area; Along the first direction, peripheral sensing regions located on two opposite sides of the central sensing region are second side sensing regions, and the second side sensing regions overlap with the third sub-curved region; In the second side sensing region, in the first direction, a distance between a boundary of the second side sensing region away from the central sensing region and the nearest first connection portion is greater than a distance between a boundary corresponding to the central sensing region and the nearest first connection portion.

9. The display panel according to claim 8, wherein: The second side sensing area includes a plurality of third sensing areas and a plurality of fourth sensing areas, and along the first direction, the plurality of fourth sensing areas are located on opposite sides of the plurality of third sensing areas; In the third sensing area, along the first direction, the first touch electrodes in each column are connected by the first connecting portion; and along the second direction, adjacent first touch electrodes are separated by the second touch electrodes.

10. The display panel according to claim 8 or 9, wherein: The second side sensing area includes a plurality of third sensing areas and a plurality of fourth sensing areas, wherein the plurality of fourth sensing areas are located on opposite sides of the plurality of third sensing areas along the first direction; the plurality of first touch electrodes of the first touch structure are arranged in at least three columns, and in the fourth sensing area, at least one column of first touch electrodes farther away from the third sensing areas is a third target column; In the fourth sensing area, in the first direction, the first touch electrodes in each column other than the third target column are connected by the first connecting portion; and in the second direction, the first touch electrodes in different columns other than the third target column are separated by the second touch electrodes; Moreover, among the first touch electrodes of the third target column, the first touch electrode farthest from the central sensing area is the second target touch electrode; in the first direction, the second target touch electrode is separated from the adjacent first touch electrode by the second touch electrode; and in the second direction, the second target touch electrode is connected to the adjacent first touch electrode; or, one end of the second target touch electrode extends in the first direction to the boundary of the fourth sensing area away from the central sensing area, and the other end extends in the first direction to the adjacent first touch electrode.

11. The display panel according to claim 10, wherein: One of the plurality of corner sensing areas is a target corner sensing area, and a fourth sensing area adjacent to the target corner sensing area is a target fourth sensing area; In the target corner sensing area, along the second direction, the second touch electrode extends to the boundary of the target corner sensing area; and along the first direction, the first touch electrode is located on a side of the second touch electrode away from the adjacent peripheral sensing area and extends to the boundary of the target corner sensing area; In the target fourth sensing area, a row of first touch electrodes close to the target corner sensing area is the fourth target row; among the first touch electrodes in the fourth target row, the first touch electrode farthest from the center sensing area is the third target touch electrode. control electrode; in the first direction, the third target touch electrode is connected to the adjacent first touch electrode through the first connecting portion; and in the second direction, the third target touch electrode is directly connected to the first touch electrode of the target corner sensing area.

12. The display panel according to claim 11, wherein: Along the first direction, the sensing area adjacent to the target fourth sensing area is the fifth sensing area; In the fifth sensing area, the column of first touch electrodes farthest from the central sensing area is the fifth target column; among the first touch electrodes of the fifth target column, the first touch electrode closest to the target fourth sensing area is the fourth target touch electrode; in the first direction, the fourth target touch electrode is separated from the adjacent first touch electrode by the second touch electrode and is connected to the third target touch electrode; in the second direction, the fourth target touch electrode is directly connected to the first touch electrode of the adjacent peripheral sensing area.

13. The display panel according to claim 12, wherein: The third target touch electrode and the fourth target touch electrode are connected through at least two first connecting parts.

14. The display panel according to any one of claims 8 to 13, wherein: The curved surface area also includes a fourth sub-curved surface area, which is located on the side of the third sub-curved surface area away from the planar area; along the direction perpendicular to the boundary of the planar area and from the planar area to the curved surface area, the curvature radius of the fourth sub-curved surface area of ​​the display substrate increases successively.

15. The display panel according to any one of claims 2 to 14, wherein: In the central sensing area, along the first direction, the first touch electrodes in each column are connected by the first connecting portion, and along the second direction, adjacent first touch electrodes are separated by the second touch electrodes.

16. The display panel according to any one of claims 2 to 15, wherein: In the same sensing area, the first touch structure and the second touch structure have the same area.

17. The display panel according to any one of claims 1 to 16, wherein: The display substrate includes a flat surface area and a curved surface area located on at least one side of the flat surface area; The curved surface area includes a fifth sub-curved surface area and a sixth sub-curved surface area connected in sequence, the fifth sub-curved surface area is located between the sixth sub-curved surface area and the flat surface area; the sixth sub-curved surface area includes a first dividing line, and the curvature radius of the display substrate is smallest at the first dividing line; Along a direction perpendicular to the first dividing line and pointing from the boundary of the plane area to the first dividing line, the curvature radius of the curved area decreases successively; the bridge sub-area is located in the plane area and / or the fifth sub-curved area.

18. The display panel according to claim 17, wherein: The distance between the boundary of the fifth sub-curved surface area and the first dividing line is greater than or equal to 0.3 mm.

19. The display panel according to claim 18, wherein: Along a direction parallel to the plane area of ​​the display substrate and perpendicular to the first dividing line, a ratio of a distance between the first dividing line and the boundary of the display substrate to a width of the curved area is 0 to 0.

5.

20. The display panel according to any one of claims 1 to 19, wherein The plurality of first touch electrodes of the first touch structure include a plurality of first electrode patterns and a plurality of second electrode patterns, the plurality of first electrode patterns and the plurality of second electrode patterns are alternately arranged in the first direction, and a first electrode pattern and a second electrode pattern are connected by a first connecting portion; The second electrode pattern includes an electrode body and electrode branches. Along the second direction, the electrode branches are disposed on opposite sides of the electrode body and connected to the electrode body.

21. The display panel according to claim 20, wherein: The area defined by the boundary between the first touch structure and the second touch structure is a touch area; the display panel further includes: a first residual electrode pattern, wherein the first residual electrode pattern is a portion of the first touch structure where an electrode branch and an electrode body of the second electrode pattern are cut off by a boundary of the touch area, and the electrode branch remains; A third connecting portion, through which the first residual electrode pattern is connected to the corresponding electrode body or first electrode pattern of the first touch structure.

22. The display panel according to claim 20 or 21, wherein: The area defined by the boundary between the first touch structure and the second touch structure is a touch area; the display panel further includes: The second residual electrode pattern is a portion of the first touch structure intercepted by the boundary of the touch area; the second residual electrode pattern is connected to another adjacent first touch structure.

23. A display device comprising: The display panel according to any one of claims 1 to 22; A circuit board is connected to the display panel.

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