A display panel and a display device

Abstract

Embodiments of the present invention disclose a display panel and a display device, including a substrate; a touch electrode unit located on one side of the substrate and arranged in a matrix along a first direction and a second direction, the touch electrode unit including a first touch electrode and a second touch electrode that are insulated from each other, the first direction and the second direction intersecting; the first touch electrode includes a first electrode main body and at least one first ring-shaped electrode, the first electrode main body extending along the first direction, the first ring-shaped electrode being electrically connected to the first electrode main body; the second touch electrode includes a second electrode main body and at least one second ring-shaped electrode, the second electrode main body extending along the second direction, the second ring-shaped electrode being electrically connected to the second electrode main body; along a third direction, the first ring-shaped electrode and the second ring-shaped electrode are alternately arranged, the third direction intersecting both the first direction and the second direction. The present invention provides a design of a touch electrode unit with a quasi-ring shape, effectively improving the touch sensitivity of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] In recent years, with the rapid development of digital information and wireless mobile communication technologies, for the purpose of being convenient to carry and having a light weight, the input methods of many electronic products, such as mobile phones, etc., have changed from using traditional devices such as keyboards or mice for input to using a touch screen as an input device. Since the user can directly operate and issue commands through the objects displayed on the screen, the touch screen provides a user-friendly operation interface between the user and the electronic product.

[0003] To integrate a touch function into a display panel, it is necessary to add touch electrodes to the display panel. However, the inventors of the present application have found that the relative areas of two adjacent touch electrodes in the existing display panel are small, so that the influence of the user's touch on the capacitance formed by the two adjacent touch electrodes is small, and thus the touch sensitivity is not high. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and a display device, which can improve the touch sensitivity of the display panel and the display device.

[0005] On the one hand, the present invention provides a display panel, including:

[0006] A substrate;

[0007] A touch electrode unit, located on one side of the substrate, and arranged in a matrix along a first direction and a second direction, the touch electrode unit includes a first touch electrode and a second touch electrode that are insulated from each other, and the first direction and the second direction intersect;

[0008] The first touch electrode includes a first electrode main body and at least one first ring-shaped electrode, the first electrode main body extends along the first direction, and the first ring-shaped electrode is electrically connected to the first electrode main body;

[0009] The second touch electrode includes a second electrode main body and at least one second ring-shaped electrode, the second electrode main body extends along the second direction, and the second ring-shaped electrode is electrically connected to the second electrode main body;

[0010] Along a third direction, the first ring-shaped electrode and the second ring-shaped electrode are arranged alternately, and the third direction intersects both the first direction and the second direction.

[0011] On the other hand, the present invention further provides a display device, including:

[0012] The display panel as described in the first aspect.

[0013] Compared with the prior art, the display panel and the display device provided by the present invention achieve the following beneficial effects: By providing a plurality of touch electrode units arranged in a matrix along a first direction and a second direction, the first touch electrode includes a first electrode main body and at least one first annular electrode that are electrically connected, the second touch electrode includes a second electrode main body and at least one second annular electrode that are electrically connected, and along a third direction, the first annular electrode and the second annular electrode are alternately arranged. Therefore, the present invention provides a design of touch electrode units with a quasi-circular shape, and compared with the prior art, the first touch electrode and the second touch electrode in the present invention have a relatively large relative area, so that the influence of the user's touch on the capacitance formed by the first touch electrode and the second touch electrode is increased. Thus, when the display panel is applied to a display device, the touch sensitivity of the display device can be effectively improved. Description of the Drawings

[0014] Figure 1 is a schematic diagram of a display panel provided by an embodiment of the present invention;

[0015] Figure 2 is Figure 1 an enlarged schematic diagram of a touch electrode unit in

[0016] Figure 3 is an edge schematic diagram of a supplementary electrode provided by an embodiment of the present invention;

[0017] Figure 4 is Figure 1 another enlarged schematic diagram of a touch electrode unit in

[0018] Figure 5 is Figure 1 yet another enlarged schematic diagram of a touch electrode unit in

[0019] Figure 6 is Figure 1 yet another enlarged schematic diagram of a touch electrode unit in

[0020] Figure 7 is Figure 2 a partial enlarged view of area Q2 in

[0021] Figure 8 is Figure 2 another partial enlarged view of area Q2 in

[0022] Figure 9 is Figure 1 yet another enlarged schematic diagram of a touch electrode unit in

[0023] Figure 10 is Figure 1 a partial enlarged view of area Q1 in

[0024] Figure 11 It is a schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Figure 12 is Figure 11 a partial enlarged view of area Q3 in

[0026] Figure 13 is Figure 11 another partial enlarged view of area Q3 in

[0027] Figure 14 is Figure 11 yet another partial enlarged view of area Q3 in

[0028] Figure 15 It is a schematic diagram of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0029] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0030] It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not used to limit the present invention. And without conflict, the embodiments and features in the present application can be combined with each other. And, the shapes and sizes of the components in the drawings do not reflect the actual proportions, and the purpose is only to schematically illustrate the content of the present invention.

[0031] To better understand the above technical solutions, the technical solutions of the present invention will be described in detail below through the drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present invention, rather than limitations on the technical solutions of the present invention. Without conflict, the technical features in the embodiments of the present invention and the embodiments can be combined with each other.

[0032] The display panel and display device provided by the present invention are provided with a plurality of touch electrode units arranged in a matrix along a first direction and a second direction. The first touch electrode includes a first electrode main body and at least one first ring-shaped electrode that are electrically connected. The second touch electrode includes a second electrode main body and at least one second ring-shaped electrode that are electrically connected. Along a third direction, the first ring-shaped electrode and the second ring-shaped electrode are arranged alternately. The present invention provides a design of a quasi-ring-shaped touch electrode unit. Compared with the prior art, the first touch electrode and the second touch electrode in the present invention have a relatively large relative area, so that the influence of the user's touch on the capacitance formed by the first touch electrode and the second touch electrode is increased. Therefore, when the display panel is applied to a display device, the touch sensitivity of the display device can be effectively improved.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of a display panel provided by an embodiment of the present invention; Figure 2 is Figure 1 an enlarged schematic diagram of a touch electrode unit in . The display panel includes: a substrate (not shown in the figure); a touch electrode unit TS located on one side of the substrate and arranged in a matrix along a first direction X and a second direction Y. The touch electrode unit TS includes a first touch electrode 10 and a second touch electrode 20 that are insulated from each other. The first direction X and the second direction Y intersect. The first touch electrode 10 includes a first electrode main body 101 and at least one first ring-shaped electrode 102. The first electrode main body 101 extends along the first direction, and the first ring-shaped electrode 102 is electrically connected to the first electrode main body 101. The second touch electrode 20 includes a second electrode main body 201 and at least one second ring-shaped electrode 202. The second electrode main body 201 extends along the second direction Y, and the second ring-shaped electrode 202 is electrically connected to the second electrode main body 201. Along a third direction Z, the first ring-shaped electrode 102 and the second ring-shaped electrode 202 are arranged alternately, and the third direction Z intersects both the first direction X and the second direction Y.

[0034] It should be noted that in the embodiment of the present invention, only the case where the touch electrode unit TS is arranged in four rows and five columns is taken as an example for illustration. In an actual product, the number of touch electrode units TS included in the display panel can be designed according to actual needs. In addition, the first touch electrode 10 and the second touch electrode 20 are filled with different patterns only to better illustrate the positional relationship between the two, and are not used to limit the materials of the two sub-touch electrodes.

[0035] It can be understood that multiple first touch electrodes 10 can form a first touch electrode strip G1 along the first direction X, and multiple second touch electrodes 20 can form a second touch electrode strip G2 along the second direction Y. The display panel may include multiple first touch electrode strips G1 and multiple second touch electrode strips G2. The first touch electrode strip G1 and the second touch electrode strip G2 are electrically connected to a touch chip through touch traces. When the display panel is used for touch operations, the above-mentioned first touch electrodes 10 may serve as touch driving electrodes, and the second touch electrodes 20 may serve as touch sensing electrodes. Alternatively, the second touch electrodes 20 may be used as touch driving electrodes, and the first touch electrodes 10 may be used as touch sensing electrodes. The embodiments of the present invention do not limit this. However, for the convenience of understanding and description, the embodiments of the present invention will only be explained by taking the first touch electrodes 10 as touch driving electrodes and the second touch electrodes 20 as touch sensing electrodes as an example.

[0036] In addition, the first direction X may be a row direction, such as parallel to the extension direction of the scan lines in the display panel, and the second direction Y may be a column direction, such as parallel to the extension direction of the data lines in the display panel. Of course, the first direction X may also be a column direction, such as parallel to the extension direction of the data lines in the display panel, and the second direction may also be a row direction, such as parallel to the extension direction of the scan lines in the display panel. The third direction Z intersects both the first direction X and the second direction Y, that is, the third direction Z may be any direction other than the first direction X and the second direction Y.

[0037] It should be noted that the first touch electrodes 10 and the second touch electrodes 20 may be disposed on the same layer or on different layers. When the first touch electrodes 10 and the second touch electrodes 20 are disposed on different layers, there is no need to provide a cross-bridge connection portion for connection within the same first touch electrode 10 or between two adjacent first touch electrodes 10, and electrical connection can be directly achieved through the first electrode main body 101. Similarly, there is no need to provide a cross-bridge connection portion for connection within the same second touch electrode 20 or between two adjacent second touch electrodes 20, and electrical connection can be directly achieved through the second electrode main body 201. In this way, the manufacturing process of the display panel can be simplified, the process efficiency can be improved, and the cost can be reduced. When the first touch electrodes 10 and the second touch electrodes 20 are disposed on the same layer, they may be formed by patterning the same film layer, thereby reducing the thickness of the display panel and realizing the thinning of the display panel. However, a cross-bridge connection portion needs to be provided to achieve electrical connection within the same first touch electrode 10 or between two adjacent first touch electrodes 10, or to achieve electrical connection within the same second touch electrode 20 or between two adjacent second touch electrodes 20. The present invention will only be explained by taking the need to provide a cross-bridge connection portion for electrical connection within the same first touch electrode 10 as an example.

[0038] It can be understood that the positive projections of the first ring-shaped electrode 102 and the second ring-shaped electrode 202 in the present invention on the plane where the substrate is located can be circular rings, quasi-circular rings, which can be closed rings or rings with at least one opening.

[0039] Reference Figure 2 , taking the example that the first touch electrode 10 and the second touch electrode 20 are arranged on the same layer for illustration. Therefore, within the same touch electrode unit TS, the first touch electrode 10 includes a first electrode main body 101 and at least one first ring-shaped electrode 102, and the second touch electrode 20 includes a second electrode main body 201 and at least one first ring-shaped electrode 202. Since the first touch electrode 10 and the second touch electrode 20 are arranged on the same layer, the first electrode main body 101 and the first ring-shaped electrode 102 of the first touch electrode 10 will be separated from the second electrode main body 201 and the second ring-shaped electrode 202 of the second touch electrode 20. That is, the first electrode main body 101 includes a first electrode main body sub-segment 101a and a first electrode main body sub-segment 101b located on both sides of the second electrode main body 201, and both the first electrode main body sub-segment 101a and the first electrode main body sub-segment 101b extend along the first direction X; the first ring-shaped electrode 102 includes a first ring-shaped electrode sub-segment 102a and a first ring-shaped electrode sub-segment 102b located on both sides of the second electrode main body 201. The second electrode main body 201 includes a second electrode main body sub-segment 201a and a second electrode main body sub-segment 201b located on both sides of the first electrode main body 101, and both the second electrode main body sub-segment 201a and the second electrode main body sub-segment 201b extend along the second direction Y; the second ring-shaped electrode 202 includes a second ring-shaped electrode sub-segment 202a and a second ring-shaped electrode sub-segment 202b located on both sides of the first electrode main body 101.

[0040] Reference Figure 2 , since a cross-bridge connection part needs to be arranged in the first touch electrode 10 to achieve electrical connection, and the second touch electrode 20 can achieve electrical connection through the connection part 203 arranged on the same layer, the shape of the connection part 203 can be set according to the shape of the first ring-shaped electrode 102 adjacent to the connection part 203. Correspondingly, the shape of the connection part 203 can be set as a circle or an ellipse, so as to increase the relative area between the first touch electrode 10 and the second touch electrode 20 to a certain extent and improve the sensitivity of the display device. In addition, Figure 2 only takes the example that the first touch electrode 10 includes two first ring-shaped electrodes 102 and the second touch electrode 20 includes one second ring-shaped electrode 202 for illustration, which is not a limitation on the number of the first ring-shaped electrode and the second ring-shaped electrode. The number of the first ring-shaped electrode and the second ring-shaped electrode included in the display panel can be designed according to actual needs.

[0041] Specifically, continue to refer to Figure 2, embodiments of the present invention provide a design of an annular-like touch touch electrode unit. Among them, a plurality of touch electrode units TS arranged in a matrix along a first direction X and a second direction Y, the first touch electrode 10 includes an electrically connected first electrode main body 101 and at least one first annular electrode 102, the second touch electrode 20 includes an electrically connected second electrode main body 201 and at least one second annular electrode 202, and along a third direction Z, the first annular electrode 102 and the second annular electrode 202 are alternately arranged. The alternately arranged and annular first annular electrode 102 and second annular electrode 202 increase the relative area of the first touch electrode 10 and the second touch electrode 20, making the influence of the user's touch on the capacitance formed by the first touch electrode 10 and the second touch electrode 20 greater, so that when the display panel is applied to a display device, the sensitivity of the display device can be effectively improved.

[0042] In some optional embodiments, continue to refer to Figure 2 , the touch electrode unit TS has a symmetric structure along a symmetry axis L1 parallel to the first direction X; and / or, the touch electrode unit TS has a symmetric structure along a symmetry axis L2 parallel to the second direction Y. That is, the touch electrode unit TS can have a symmetric structure along the symmetry axis L1; or, the touch electrode unit TS can have a symmetric structure along the symmetry axis L2; or, the touch electrode unit TS has a symmetric structure along both the symmetry axis L1 and the symmetry axis L2.

[0043] In this embodiment, by setting the touch electrode unit TS to have a symmetric structure, while effectively increasing the mutual capacitance value between the touch driving electrode and the touch sensing electrode, the mutual capacitance electric field distribution in the entire display panel can be made more uniform, which is more conducive to improving the resolution and accuracy of detecting the touch position.

[0044] In some optional embodiments, continue to refer to Figure 1 and Figure 2 , the second touch electrode 20 includes a supplementary electrode 204. Along the direction perpendicular to the plane of the substrate (not shown in the figure), the first annular electrode 102 and the second annular electrode 202 are located within the supplementary electrode 204.

[0045] It can be understood that the display panel can be a flexible display panel or a rigid display panel. Therefore, the substrate can be a flexible substrate, such as at least one material selected from polyimide, polyethylene naphthalate, polycarbonate, polyurethane, polydimethylsiloxane, rubber, and polyethylene terephthalate; or it can be a rigid substrate, such as glass. Along the direction perpendicular to the plane of the substrate, it can be the thickness direction of the display panel or the direction perpendicular to the light-emitting surface of the display panel.

[0046] To increase the mutual capacitance value between the touch driving electrode and the touch sensing electrode, a supplementary electrode 204 can be provided on the side of the outermost first annular electrode 102 included in the first touch electrode 20 away from the touch electrode unit TS. The inner edge of the supplementary electrode 204 can be set to be circular or quasi-circular to match the shape of the adjacent first annular electrode 102. And the supplementary electrode 204 can have an edge extending along the second direction Y, and this edge can be linear or substantially linear. Refer to Figure 3 , Figure 3 FIG. Figure 3 is a schematic diagram of the edge of the supplementary electrode provided by an embodiment of the present invention. Among them, the straight line La, the straight line Lb, and the straight line Lc can all be considered to extend along the second direction Y. This edge can be the edge of the touch electrode unit TS parallel to the second direction and is located on both sides of the touch electrode unit TS along the first direction X. That is, the outer edge of the supplementary electrode 204 can be set to be linear.

[0047] Since still taking the example of the first touch electrode 10 and the second touch electrode 20 being arranged in the same layer for illustration. Therefore, within the same touch electrode unit TS, the supplementary electrode 204 of the second touch electrode 20 will be divided into two parts by the first electrode main body 101 of the first touch electrode 10, located on both sides of the first electrode main body 101 respectively, and both parts are electrically connected to the second electrode main body 201.

[0048] In the embodiment of the present invention, by providing the supplementary electrode 204, the effective space of the display panel can be fully utilized, the mutual capacitance value between the first touch electrode 10 and the second touch electrode 20 can be increased, and the touch sensitivity of the display device can be improved.

[0049] In some alternative embodiments, refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 is Figure 1 another enlarged schematic diagram of the touch electrode unit in Figure 5 is Figure 1 yet another enlarged schematic diagram of the touch electrode unit in Figure 6 is Figure 1 yet another enlarged schematic diagram of the touch electrode unit in . The first annular electrode 102 adjacent to the supplementary electrode 204 is the first outer annular electrode 103, and the first outer annular electrode 103 further includes at least one corner electrode 103a; the corner electrode 103a extends along the fourth direction W1 (or the fourth direction W2) and is located on the side of the first outer annular electrode 103 away from the second annular electrode 202, and the fourth direction W1 (or the fourth direction W2) intersects both the first direction X and the second direction Y.

[0050] It should be noted that since the supplementary electrode 204 of a touch electrode unit TS is divided into four sub-parts by the first annular electrode 102 (i.e., the first outer annular electrode 103) adjacent to the supplementary electrode 204, and these four sub-parts are respectively located at the four corners of the touch electrode unit TS. Therefore, the first outer annular electrode 103 may include at least one corner electrode 103a corresponding to the sub-parts of the supplementary electrode 204 adjacent to it. The corner electrode 103a extending along the fourth direction can be understood as the corner electrode 103a extending along the fourth direction W1 or along the fourth direction W2. The fourth direction W1 intersects both the first direction X and the second direction Y, and the fourth direction W2 intersects both the first direction X and the second direction Y. And the fourth direction may be the same as the third direction, that is, along the fourth direction, the first annular electrode 102 and the second annular electrode 202 are still arranged alternately. The corner electrode 103a extending along the fourth direction can also be understood as the first outer annular electrode 103 having convex portions extending towards the four corners of the touch electrode unit TS. It can be understood that in the present invention, the introduction of the fourth direction is only for facilitating the explanation of the corner electrode.

[0051] Specifically, in the present invention, the first annular electrode 102 adjacent to the supplementary electrode 204 is provided to include the corner electrode 103a, and the corner electrode 103a extends along the fourth direction and is located on the side of the first outer annular electrode 103 away from the second annular electrode 202, which can increase the mutual capacitance signal amount at the four corners of the touch electrode unit TS, and further effectively improve the mutual capacitance value between the first touch electrode 10 and the second touch electrode 10, while making the distribution of the mutual capacitance electric field lines more uniform, which is more conducive to improving the resolution and accuracy of detecting the touch position.

[0052] In some optional embodiments, referring to Figure 4 、 Figure 5 and Figure 6 ,the acute angle formed between the fourth direction W1 (or the fourth direction W2) and the first direction X is equal to the acute angle formed between the fourth direction W1 (or the fourth direction W2) and the second direction Y.

[0053] Specifically, the acute angle between the fourth direction W1 and the first direction X is equal to the acute angle between the fourth direction W1 and the second direction Y, that is, the acute angle between the fourth direction W1 and the first direction X is equal to 45°, and the acute angle between the fourth direction W1 and the second direction Y is equal to 45°. The acute angle between the fourth direction W2 and the first direction X is equal to the acute angle between the fourth direction W2 and the second direction Y, that is, the acute angle between the fourth direction W2 and the first direction X is equal to 45°, and the acute angle between the fourth direction W2 and the second direction Y is equal to 45°. In other words, if the touch electrode unit TS is square, the extending direction of the corner electrode 103 is parallel to the diagonal of the touch electrode unit TS. Such a setting can make the distribution of the mutual capacitance electric field lines more uniform, which is more conducive to improving the resolution and accuracy of detecting the touch position.

[0054] In some alternative embodiments, referring to Figure 5 and Figure 6 , the display panel further includes a first dummy electrode 40, and the corner electrode 103a at least partially surrounds the first dummy electrode 40.

[0055] It can be understood that the display panel generally includes a substrate, a thin film transistor array layer on one side of the substrate, an organic light emitting device layer on the side of the thin film transistor array layer away from the substrate, and a thin film encapsulation layer (TFE, thin film encapsulation) on the side of the organic light emitting device layer away from the substrate. The touch electrode unit is located on the side of the thin film encapsulation layer away from the substrate. The thin film transistor array layer includes an active layer, a gate insulating layer, a first metal layer, an interlayer insulating layer, and a second metal layer; the organic light emitting device layer includes an anode layer, a light emitting layer, and a cathode layer; the display panel further includes a planarization layer between the second metal layer and the anode layer, and a pixel definition layer (PDL, pixel definition layer) on the side of the anode layer away from the substrate.

[0056] Since the cathode transmits a low power supply voltage signal (PVEE) and is relatively close to the touch electrode unit, there is a large crosstalk between them. Therefore, a first dummy electrode 40 is added to the pattern of the touch electrode unit TS according to the pattern shape. The first dummy electrode 40 is floating and not electrically connected to the first touch electrode 10 and the second touch electrode 20, so as to reduce the area ratio of the first touch electrode 10 and the second touch electrode 20 in the touch electrode unit TS, achieving the purpose of reducing crosstalk. In other words, the first dummy electrode 40 can shield and disperse the interference signals or other noise signals located below it, effectively controlling the capacitance value and improving the touch sensitivity.

[0057] It can be understood that each first dummy electrode 40 can extend at a specific angle within the touch electrode unit TS. For example, the extension direction of the first dummy electrode 40 can be 45 degrees with respect to the acute angle formed between the data lines and the scan lines in the display panel. In this way, the interference of the signals below the thin film encapsulation layer to the touch signals can be minimized as much as possible, thereby enhancing the touch stability and sensitivity.

[0058] It can be understood that the shape of the first dummy electrode 40 in the embodiments of the present invention can be arc-shaped, circular, rectangular, or hexagonal. In one embodiment, the first dummy electrode 40 can further include a plurality of sub-dummy electrodes (not shown in the figure), and each sub-dummy electrode is arranged at intervals. Specifically, according to the requirements of the interference signals, the sub-dummy electrodes can be further divided from within each dummy electrode 40 to divide the first dummy electrode 40, for example, a rectangular one, into independent sub-dummy electrodes, or sub-dummy electrodes can be arranged inside each first dummy electrode 40, thereby reducing the signal interference between the signals below the touch thin film encapsulation layer and the touch signals.

[0059] In some alternative embodiments, referring to Figure 7 and Figure 8 , Figure 7 is Figure 2 a partial enlarged view of area Q2 in Figure 8 is Figure 2 another partial enlarged view of area Q2 in . The first touch electrode 10 and the second touch electrode 20 are comb-shaped or wavy at the junction.

[0060] In this embodiment, the first touch electrode 10 and the second touch electrode 20 are set to be comb-shaped or wavy at the junction, and the multiple comb-shaped structures or wavy structures at the junction of the first touch electrode 10 and the second touch electrode 20 are mutually engaged, which can increase the length of the slit between the first touch electrode 10 and the second touch electrode 20 to a certain extent, and then increase the mutual capacitance generated between the first touch electrode 10 and the second touch electrode 20 corresponding to each touch point. The larger the mutual capacitance, the greater the capacitance change amount of the mutual capacitance caused by the touch under the same degree of touch. In this way, there will be a relatively obvious difference in the change of the mutual capacitance caused by the touch, and then the touch position can be accurately discriminated, improving the detection sensitivity of the touch position.

[0061] In some alternative embodiments, referring to Figure 1-2 , Figure 4-6 , Figure 9 , Figure 9 is Figure 1Another enlarged schematic diagram of the middle touch electrode unit. The display panel further includes a cross-bridge connection portion 30. The first touch electrode 10 and the second touch electrode 20 are on the same layer, and the same first ring electrode 102 includes at least two first sub-ring electrodes 102a located on both sides of the second electrode main body 201. Adjacent two first sub-ring electrodes 102a are electrically connected through the cross-bridge connection portion 30.

[0062] It should be noted that when the first touch electrode 10 and the second touch electrode 20 are arranged on the same layer, the present invention takes the example that a cross-bridge connection portion 30 needs to be arranged in the same first touch electrode 10 to achieve electrical connection for illustration.

[0063] The cross-bridge connection portion 30 can be formed of a light-transmitting material such as indium tin oxide. Since the cross-bridge connection portion 30 is a transparent cross-bridge, the arrangement of the cross-bridge connection portion 30 will not block the light emitted by the sub-pixels. The cross-bridge connection portion 30 can also be a metal cross-bridge. When an electrostatic discharge phenomenon is caused by the accumulation of static charges, since the cross-bridge connection portion 30 is a metal, the risk of the cross-bridge connection portion 30 being broken down by the static current can be reduced, thereby improving the connection reliability inside the first touch electrode 10, that is, improving the connection reliability of the first touch electrode strip G1, and further improving the touch accuracy.

[0064] Figure 1-2 and Figure 4-6 shows two cross-bridge connection portions 30 arranged in the same first touch electrode 10, Figure 9 shows four cross-bridge connection portions 30 arranged in the same first touch electrode 10. It can be understood that the number and width of the cross-bridge connection portions 30 can be designed according to actual requirements.

[0065] In some alternative embodiments, both the first touch electrode 10 and the second touch electrode 20 are transparent electrodes or metal mesh electrodes.

[0066] Both the first touch electrode 10 and the second touch electrode 20 can be transparent electrodes, such as including at least one of indium tin oxide, indium zinc oxide, cadmium tin oxide, and indium gallium zinc oxide. Since the transparent electrode can allow more light to pass through, therefore, setting both the first touch electrode 10 and the second touch electrode 20 as transparent electrodes can reduce the light loss of the display panel and avoid affecting the display effect of the display panel.

[0067] The first touch electrode 10 and the second touch electrode 20 can both be metal mesh electrodes. Since metal materials are opaque, the first touch electrode 10 and the second touch electrode 20 can be arranged in a grid-like structure, and the orthographic projections of the first touch electrode 10 and the second touch electrode 20 on the plane where the substrate is located are located within the orthographic projection of the non-opening area of the pixel on the plane where the substrate is located, that is, each mesh hole in the first touch electrode 10 and the second touch electrode 20 corresponds to the opening area of the sub-pixel. By adopting this setting method, it is possible to avoid the first touch electrode 10 and the second touch electrode 20 from blocking the light emitted by the pixel, and to avoid the first touch electrode 10 and the second touch electrode 20 from being visible to the human eye, thereby avoiding affecting normal display. In addition, the surface resistance value of the metal material is relatively low. On the premise of achieving the same touch accuracy, it can reduce the surface resistance value of the electrode to a certain extent, that is, reduce the load, and further reduce the power consumption generated during the touch process. Moreover, the metal material has good ductility and toughness, and can be applied to flexible display panels to achieve bending or folding of the display panel.

[0068] In some alternative embodiments, referring to Figure 10 , Figure 10 is Figure 1 a partial enlarged view of region Q1 in

[0069] It can be understood that along the first direction X, the boundaries between two adjacent touch electrode units TS can be linear, serrated, or wavy. In the present invention, only the case where the boundary is wavy is taken as an example for illustration.

[0070] In the embodiment of the present invention, by arranging the second dummy electrode 50 between the adjacent touch electrode units TS in the first direction X, the electrode patterns between the upper and lower touch electrode units TS can be isolated, preventing short circuits between the second touch electrodes 20, thereby improving the touch effect.

[0071] It can be understood that a dummy electrode can also be arranged between at least one of the connecting portion 203 and the first ring electrode 102, the first ring electrode 102 and the second ring electrode 202, and the first ring electrode 102 and the supplementary electrode 204 within the touch electrode unit TS, so as to weaken the mutual interference between the first touch electrode 10 and the second touch electrode 20, reduce the coupling capacitance between the first touch electrode 10 and the second touch electrode 20, reduce the charging time of the first touch electrode 10 and the second touch electrode 20, and improve the reporting rate of the display panel.

[0072] Of course, in some alternative embodiments, the second dummy electrode 50 can be floating or electrically connected to a fixed potential, and the present invention does not make specific limitations here.

[0073] In some alternative embodiments, referring to Figure 11 - Figure 13 , Figure 11 is a schematic diagram of another display panel provided by an embodiment of the present invention, Figure 12 is Figure 11 a partial enlarged view of region Q3 in Figure 13 is Figure 11 another partial enlarged view of region Q3 in. The display panel further includes at least one light-transmitting region TL. In a direction perpendicular to the plane of the substrate, the light-transmitting region TL is located within at least one first annular electrode 102; and / or, the light-transmitting region TL is located within at least one second annular electrode 202.

[0074] It can be understood that the display panel includes a display region AA and a non-display region BA, and the non-display region BA surrounds the display region AA. The display panel further includes at least one light-transmitting region TL, and the display region AA at least partially surrounds the light-transmitting region TL. In the embodiments of the present invention, only the case where the display region AA completely surrounds one light-transmitting region TL is taken as an example for illustration. The light-transmitting region TL can be correspondingly arranged with an optical acquisition element (not shown in the figure), and the optical acquisition element can be a device that uses optical signals to work, such as a camera, a fingerprint recognition sensor, etc. Taking the optical acquisition element as a camera as an example, since the shape of the region corresponding to the camera is generally set to be circular, therefore Figure 11 exemplarily shows that the light-transmitting region TL is a circular region in, but it does not constitute a limitation to the present invention. The light-transmitting region TL can also be a polygon, an ellipse, etc. The number of the light-transmitting regions TL is not specifically limited in the present invention either.

[0075] It should be noted that pixels can be provided in the light-transmitting region TL, so that the light-transmitting region TL can be used for display. Pixels can also not be provided in the light-transmitting region TL, so that the light-transmitting region TL does not perform display. The display panel can be provided with through holes in the light-transmitting region TL, such as by mechanical stamping or laser drilling, to provide openings in the display region AA of the display panel for installing the optical acquisition element. Of course, blind holes can also be provided in the light-transmitting region TL of the display panel, that is, no openings are provided, but this region still corresponds to the optical acquisition element.

[0076] In the embodiments of the present invention, the first touch electrode 10 and the second touch electrode 20 at the corresponding position of the light-transmitting region TL are removed, so that more external light can enter the camera (taking the optical acquisition element as a camera as an example) located on the backlight side of the display panel through the light-transmitting region TL, ensuring that the camera receives sufficient light to meet the imaging function of the camera. It can be understood that within the same touch electrode unit TS, due to the setting of the light-transmitting region TL, along the second direction Y, the second touch electrode 20 is divided into two parts located on both sides of the first touch 10. Therefore, at least one connection structure 31 needs to be provided to ensure the connection reliability of the second touch electrode 20. The present invention only takes the example of providing two connection structures 31 for illustration.

[0077] Under normal circumstances, the side length of the touch electrode unit TS is between 3.8 mm and 4.2 mm, and the size of the camera is smaller compared thereto. In the present invention, the light-transmitting region TL is disposed within one touch electrode unit TS and further within at least one first annular electrode 102; and / or, the light-transmitting region TL is within at least one second annular electrode 202, and the annular first annular electrode 102 and / or the second annular electrode 202 can be fully utilized to dispose the light-transmitting region TL, such that the shape of the light-transmitting region TL matches the shape of the annular electrode, and the touch effect or the display effect of the display panel is not affected.

[0078] In some alternative embodiments, referring to Figure 11 and Figure 14 , Figure 14 is Figure 11 a further partial enlarged view of the region Q3 in . The display panel further includes at least one light-transmitting region TL, and in a direction perpendicular to the plane of the substrate, the light-transmitting region TL is within the supplementary electrode 204.

[0079] Compared with Figure 12 and Figure 13 , Figure 14 in , the first annular electrode 102 and the second annular electrode 202 in the middle of the touch electrode unit TS are both removed. To ensure the connection reliability of the first touch electrode 10, at least one connection structure 32 can be disposed between the light-transmitting region TL and the supplementary electrode 204, and the connection structure 32 can be disposed on the same layer as the connection structure 31, thereby simplifying the process and improving the production efficiency.

[0080] Specifically, to match the size of the optical acquisition element, the size of the light-transmitting region TL can be enlarged, as shown in Figure 14 , so that the light-transmitting region TL is within the supplementary electrode 204. That is, by using the inner edge of the supplementary electrode 204 being annular to dispose the light-transmitting region TL, the shape of the light-transmitting region TL is made to match it, and the touch effect or the display effect of the display panel is not affected.

[0081] It should be noted that for the above embodiments of the display panel provided by the present invention, without conflict, their technical features can be freely combined, and the present invention will not list them all.

[0082] An embodiment of the present invention further provides a display device, as shown in Figure 15 . Figure 15 is a schematic diagram of a display device provided by an embodiment of the present invention, and the display device includes the above display panel. Among them, the specific structure of the display panel has been described in detail in the above embodiments and will not be elaborated here. Of course, Figure 15The display device shown is only for illustrative purposes, and the display device can be any electronic device with a display function such as a mobile phone, a tablet computer, a laptop computer, an e-book reader, or a television.

[0083] The display panel and the display device provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A display panel, characterized in that, comprising: a substrate; a touch electrode unit located on one side of the substrate and arranged in a matrix along a first direction and a second direction, the touch electrode unit comprising a first touch electrode and a second touch electrode that are insulated from each other, the first direction and the second direction intersecting; the first touch electrode comprising a first electrode main body and at least one first ring electrode, the first electrode main body extending along the first direction, the first ring electrode being electrically connected to the first electrode main body; the second touch electrode comprising a second electrode main body and at least one second ring electrode, the second electrode main body extending along the second direction, the second ring electrode being electrically connected to the second electrode main body; along a third direction, the first ring electrode and the second ring electrode are arranged alternately, the third direction intersecting both the first direction and the second direction; the second touch electrode comprises a supplementary electrode; in a direction perpendicular to the plane of the substrate, the first ring electrode and the second ring electrode are located within the supplementary electrode; the first ring electrode adjacent to the supplementary electrode is a first outer ring electrode, the first outer ring electrode further comprising at least one corner electrode; the corner electrode extends along a fourth direction and is located on a side of the first outer ring electrode away from the second ring electrode, the fourth direction intersecting both the first direction and the second direction; the display panel further comprises a first dummy electrode, and the corner electrode at least partially surrounds the first dummy electrode.

2. The display panel according to claim 1, characterized in that, the touch electrode unit has a symmetric structure along a symmetry axis parallel to the first direction; and / or, the touch electrode unit has a symmetric structure along a symmetry axis parallel to the second direction.

3. The display panel according to claim 1, characterized in that, the acute angle formed between the fourth direction and the first direction is equal to the acute angle formed between the fourth direction and the second direction.

4. The display panel according to claim 1, characterized in that, the first touch electrode and the second touch electrode are comb-shaped or wavy at the junction.

5. The display panel according to claim 1, characterized in that, it further comprises a cross-bridge connection portion, the first touch electrode and the second touch electrode are on the same layer, and the same first ring electrode comprises at least two first sub-ring electrodes located on both sides of the second electrode main body, and adjacent two first sub-ring electrodes are electrically connected through the cross-bridge connection portion.

6. The display panel according to claim 1, characterized in that, both the first touch electrode and the second touch electrode are transparent electrodes or metal mesh electrodes.

7. The display panel according to claim 1, characterized in that, along the first direction, a second dummy electrode is provided between adjacent two touch electrode units.

8. The display panel according to claim 1, characterized in that, the display panel further comprises at least one light-transmitting area, in a direction perpendicular to the plane of the substrate, the light-transmitting area is located within at least one of the first ring electrodes; and / or, The light-transmissive region is located within at least one of the second annular electrodes.

9. The display panel according to claim 1, wherein, the display panel further includes at least one light-transmissive region, and in a direction perpendicular to the plane of the substrate, the light-transmissive region is located within the supplementary electrode.

10. A display device, wherein, it includes the display panel according to any one of claims 1-9.

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