Touch panel and touch display device

Abstract

The application discloses a touch panel and a touch display device, and relates to the technical field of display; the touch panel comprises a substrate and a first electrode layer located at the first side of the substrate; the first electrode layer comprises a first touch unit and a second touch unit; the first touch unit comprises a plurality of first touch electrodes arranged along a first direction and connected with each other; the second touch unit comprises a plurality of second touch electrodes arranged along a second direction and connected with each other; the first touch electrodes and the second touch electrodes are insulated; a second electrode layer is arranged at the first side of the substrate; an insulating layer is arranged between the first electrode layer and the second electrode layer; the second electrode layer comprises a plurality of third sub-electrodes; the third sub-electrodes, the first touch electrodes and / or the second touch electrodes at least partially overlap in the direction perpendicular to the plane where the substrate is located; the third sub-electrodes are arranged, and the electric signals applied to the third sub-electrodes are adjusted, so that the influence of the noise generated by the touch panel on the display panel is offset, and the display effect of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, more particularly, to a touch panel and a touch display device. BACKGROUND

[0002] In the prior art, in order to improve the touch sensitivity of the touch display panel, the touch sensing unit is usually specially designed to detect the noise from the display panel, since the noise from the display panel will affect the touch sensitivity of the touch panel, therefore, the prior art usually processes the detected noise from the display panel to reduce the noise from the display panel, so as to improve the touch sensitivity of the touch panel; however, the special design of the touch sensing unit can only check the noise from the display panel to further improve the touch sensitivity of the touch panel, but the noise of the touch sensing unit itself is not detected, since the noise of the touch sensing unit itself will also interfere with the display panel with multiplexing circuit design to cause display horizontal line phenomenon; therefore, it is urgent to provide a method capable of reducing or eliminating the influence of the noise generated by the touch sensing unit during operation on the display effect of the display panel, so as to improve the display effect of the touch display device. SUMMARY

[0003] Therefore, the present application provides a touch panel and a touch display device to reduce or eliminate the influence of the noise generated by the touch sensing unit during operation on the display effect of the display panel, so as to improve the display effect of the touch display device.

[0004] In a first aspect, the present application provides a touch panel, comprising:

[0005] a substrate and a first electrode layer arranged on a first side of the substrate, the first electrode layer comprising a plurality of first touch units extending along a first direction and a plurality of second touch units extending along a second direction, the first direction and the second direction intersecting; the first touch unit comprising a plurality of first touch electrodes arranged along the first direction and connected to each other in series, the second touch unit comprising a plurality of second touch electrodes arranged along the second direction and connected to each other in series, the first touch electrodes and the second touch electrodes being insulated;

[0006] a second electrode layer arranged on the first side of the substrate, the first electrode layer and the second electrode layer comprising an insulating layer in a direction perpendicular to the plane on which the substrate lies; the second electrode layer comprising a plurality of third sub-electrodes;

[0007] In a direction perpendicular to the plane on which the substrate lies, the third sub-electrodes and the first touch electrodes at least partially overlap, and / or the third sub-electrodes and the second touch electrodes at least partially overlap.

[0008] Secondly, this application provides a touch display device, the touch display device including the touch panel;

[0009] The touch display device further includes a display panel, which is located on the side of the touch panel away from the light-emitting surface of the touch display panel.

[0010] Compared with the prior art, the touch panel and touch display device provided by the present invention achieve at least the following beneficial effects:

[0011] This application provides a touch panel and a touch display device. By setting a second electrode layer on one side of a first electrode layer where a first touch electrode and a second touch electrode are provided, and setting a third sub-electrode in the second electrode layer, the third sub-electrode and the first touch electrode are at least partially overlapping, and / or the third sub-electrode and the second touch electrode are at least partially overlapping. For example, the third sub-electrode can be set below or above the first touch electrode and / or the second touch electrode. By setting the third sub-electrode and adjusting the electrical signal applied to it, the influence of noise generated by at least part of the touch panel on the display panel can be offset, thereby reducing or eliminating the influence of noise generated by the touch sensing electrode itself on the display effect of the display panel, thereby improving the display effect of the touch display device.

[0012] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0013] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0015] Figure 1 The image shown is a schematic diagram of a touch panel provided in an embodiment of this application;

[0016] Figure 2 The image shown is provided in an embodiment of this application. Figure 1 A schematic diagram of AA';

[0017] Figure 3 The image shown is provided in an embodiment of this application. Figure 1 Another schematic diagram of AA';

[0018] Figure 4 The image shown is provided in an embodiment of this application. Figure 1 A schematic diagram of a BB';

[0019] Figure 5 Fig. 2 shows another schematic diagram of the BB' provided by the embodiment of the present application; Figure 1

[0020] Figure 6 Fig. 4 shows another schematic diagram of the second electrode layer in the touch panel provided by the embodiment of the present application;

[0021] Figure 7 Fig. 5 shows another schematic diagram of the second electrode layer in the touch panel provided by the embodiment of the present application;

[0022] Figure 8 Fig. 6 shows a schematic diagram of the scanning signal and the first driving signal provided by the embodiment of the present application;

[0023] Figure 9 Fig. 7 shows a schematic diagram of the touch display device provided by the embodiment of the present application;

[0024] Figure 10 Fig. 8 shows another schematic diagram of the BB' provided by the embodiment of the present application; Figure 9

[0025] Figure 11 Fig. 9 shows a schematic diagram of the touch signal and the second driving signal provided by the embodiment of the present application. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not intended to limit the scope of the present application unless otherwise specifically stated.

[0027] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application, its application, or uses.

[0028] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as being part of the specification.

[0029] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0030] It should be noted that like numbers and letters refer to like items throughout the drawings, and that, as such, no further discussion on such items is required.

[0031] ​​In the prior art, in order to improve the touch sensitivity of the touch display panel, the touch sensing unit is usually specially designed to detect the noise from the display panel. Since the noise from the display panel affects the touch sensitivity of the touch panel, the prior art generally processes the detected noise from the display panel to reduce the noise from the display panel, thereby improving the touch sensitivity of the touch panel. However, the special design of the touch sensing unit can only check the noise from the display panel to further improve the touch sensitivity of the touch panel, but the noise of the touch sensing unit itself is not detected. Since the noise of the touch sensing unit itself will interfere with the display panel with multiplexing circuit design and cause display horizontal line phenomenon. Therefore, there is an urgent need to provide a method capable of reducing or eliminating the noise generated by the touch sensing unit during operation and affecting the display effect of the display panel.

[0032] Therefore, the present application provides a touch panel and a touch display device for reducing or eliminating the noise generated by the touch sensing unit during operation and affecting the display effect of the display panel, thereby improving the display effect of the touch display device.

[0033] Figure 1 Fig. 1 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 2 Fig. 2 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 1 Fig. 3 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 3 Fig. 4 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 1 Fig. 5 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 4 Fig. 6 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 1 Fig. 7 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 5 Fig. 8 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figure 1 Fig. 9 shows a schematic diagram of a touch panel provided by an embodiment of the present application, Figures 1-5 The present application provides a touch panel 100, comprising:

[0034] a substrate 10 and a first electrode layer 21 disposed on a first side of the substrate 10, the first electrode layer 21 comprising a plurality of first touch units 11 extending along a first direction and a plurality of second touch units 12 extending along a second direction, the first direction and the second direction intersecting; the first touch unit 11 comprising a plurality of first touch electrodes 111 arranged along the first direction and connected to each other in series, the second touch unit 12 comprising a plurality of second touch electrodes 121 arranged along the second direction and connected to each other in series, the first touch electrodes 111 and the second touch electrodes 121 being insulated;

[0035] The second electrode layer 13 is arranged on the first side of the substrate 10, and the first electrode layer 21 and the second electrode layer 13 are separated by the insulating layer 14 in the direction perpendicular to the plane of the substrate 10; the second electrode layer 13 comprises a plurality of third sub-electrodes 131.

[0036] The third sub-electrodes 131 and the first touch electrodes 111 at least partially overlap in the direction perpendicular to the plane of the substrate 10, and / or the third sub-electrodes 131 and the second touch electrodes 121 at least partially overlap.

[0037] Specifically, the present application provides a touch panel 100, which comprises a substrate 10 and a first electrode layer 21 arranged on the first side of the substrate 10. The first electrode layer 21 can be optionally arranged as a touch sensing electrode. For example, the first electrode layer 21 can comprise a plurality of first touch units 11 extending in a first direction and a plurality of second touch units 12 extending in a second direction. The first touch units 11 can be arranged with a plurality of first touch electrodes 111 arranged in the first direction and connected in series with each other. The second touch units 12 can be arranged with a plurality of second touch electrodes 121 arranged in the second direction and connected in series with each other. The first touch electrodes 111 and the second touch electrodes 121 are insulated from each other. One of the first touch electrodes 111 and the second touch electrodes 121 can be used as a TX electrode, and the other can be used as a RX electrode. The TX electrode is a transmitting electrode used for applying a touch driving voltage. The RX electrode is a receiving electrode used for sensing a change in capacitance caused by the touch driving voltage. Further, the TX electrode is connected to a TX channel of a touch driving circuit, and the RX electrode is connected to a RX electrode of a touch driving circuit. The touch driving circuit can determine whether a finger or a conductive object (e.g., a stylus) is applied and the position of the touch by sensing a change in charge in the touch sensing electrode before and after the touch is applied.

[0038] Further, the touch panel 100 can optionally comprise a second electrode layer 13 arranged on the first side of the substrate 10. The first electrode layer 21 and the second electrode layer 13 can be arranged on the same side of the substrate 10. The second electrode layer 13 can comprise a plurality of third sub-electrodes 131. The third sub-electrodes 131 and the first touch electrodes 111 can at least partially overlap in the direction perpendicular to the plane of the substrate 10, and / or the third sub-electrodes 131 and the second touch electrodes 121 can at least partially overlap. Figure 1 、 Figure 2 and Figure 4 For example, the second electrode layer 13 can be arranged on the side of the first electrode layer 21 facing the substrate 10. For details, please refer to Figure 1 、 Figure 3 and Figure 5The second electrode layer 13 can also be arranged on the side of the first electrode layer 21 away from the substrate 10, and the type and size of the electric signal applied to the third sub-electrode 131 are adjusted to offset the influence of the noise generated by the touch sensing electrode on the display panel during the operation of the touch panel 100, thereby reducing or eliminating the influence of the noise generated by the touch sensing electrode on the display panel during the operation of the touch panel 100, and improving the display effect of the touch display device.

[0039] In the present application, the third sub-electrode 131 and the first touch electrode 111 overlap, and / or the third sub-electrode 131 and the second touch electrode 121 overlap. When the touch panel 100 is in operation and the third sub-electrode 131 is applied with an electric signal, an electric field is generated between the third sub-electrode 131 and the corresponding first touch electrode 111 and / or second touch electrode 121, which affects the electric field between the first touch electrode 111 and / or second touch electrode 121 and the display panel in the corresponding display device, thereby at least partially offsetting the noise signal generated by the touch sensing electrode on the display panel of the corresponding display device, and achieving the effect of reducing or eliminating the influence of the noise generated by the touch sensing electrode on the display panel during the operation of the touch panel 100, thereby improving the display effect of the corresponding touch display device.

[0040] It should be further noted that the present application does not limit the second electrode layer 13 to be arranged on the side of the first electrode layer 21 facing the substrate 10, nor does it limit the second electrode layer 13 to be arranged on the side of the first electrode layer 21 away from the substrate 10. The user can adjust the specific arrangement of the second electrode layer 13 according to the actual design situation and actual design requirements of the touch panel 100, as long as the noise generated by the touch sensing electrode can be reduced or eliminated after the third sub-electrode 131 of the second electrode layer 13 is added.

[0041] It should be further noted that, Figure 1 The first touch electrode 111 and the second touch electrode 121 each correspond to the third sub-electrode 131, which is an embodiment, but the present application is not limited thereto. The user can adjust the number of third sub-electrodes 131 according to the actual design situation and actual design requirements of the touch panel 100, for example, only at least part of the first touch electrodes 111 can correspond to the third sub-electrodes 131, or only at least part of the second touch electrodes 121 can correspond to the third sub-electrodes 131.

[0042] It should be further noted that the present application does not limit the setting shape, setting size, etc. of the first touch electrode 111 and the second touch electrode 121, as long as the setting of the first touch electrode 111 and the second touch electrode 121 can be used for recognizing the touch position of the finger or the conductive object; furthermore, the present application only provides the embodiment that the first touch electrode 111 and the second touch electrode 121 are set in the same layer, and the user can also adjust the first touch electrode 111 and the second touch electrode 121 to be set in different layers according to the actual design requirement, and the present application does not make specific limitation on this.

[0043] It should be further noted that the first direction and the second direction intersect, which can be specifically set as that the first direction and the second direction are perpendicular.

[0044] Please continue to refer to Figures 1-5 Optionally, along the direction perpendicular to the plane where the substrate 10 is located, the first touch electrode 111 covers the third sub-electrode 131, and / or the second touch electrode 121 covers the third sub-electrode 131.

[0045] Specifically, the present application further provides an alternative embodiment that when the third sub-electrode 131 and the first touch electrode 111 have at least partial overlapping area along the direction perpendicular to the plane where the substrate 10 is located, and / or the third sub-electrode 131 and the second touch electrode 121 have at least partial overlapping area along the direction perpendicular to the plane where the substrate 10 is located, it can be further selected that the first touch electrode 111 covers the third sub-electrode 131 along the direction perpendicular to the plane where the substrate 10 is located, and / or the second touch electrode 121 covers the third sub-electrode 131 along the direction perpendicular to the plane where the substrate 10 is located.

[0046] First, the first touch electrode 111 covers the third sub-electrode 131, and / or the second touch electrode 121 covers the third sub-electrode 131, that is, the area of the third sub-electrode 131 is relatively small, which can avoid the signal crosstalk between the third sub-electrode 131 and other elements set in the same layer when the third sub-electrode 131 is applied with an electric signal, and can also avoid the excessive cancellation of the electric field generated between the third sub-electrode 131 and the corresponding first touch electrode 111 and / or second touch electrode 121 when the third sub-electrode 131 is applied with an electric signal, thereby avoiding the negative impact of the setting of the third sub-electrode 131 on the corresponding touch display device, so as to guarantee the improvement of the display effect of the corresponding touch display device due to the setting of the third sub-electrode 131.

[0047] Secondly, the first touch electrode 111 and the second touch electrode 121 reflect the ambient light irradiated to the surface of the substrate 10 away from the side surface of the substrate 10. If the first touch electrode 111 covers the third sub-electrode 131 and / or the second touch electrode 121 covers the third sub-electrode 131, the reflection area of the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 to the ambient light is not increased, that is, the setting of the third sub-electrode 131 does not increase the reflection intensity of the touch panel 100 to the ambient light, and does not cause the problem of uneven reflection, thereby avoiding the influence of the excessive reflection of the touch panel 100 to the ambient light on the display effect of the corresponding touch display panel.

[0048] It should be noted that, Figures 1-5 Only the embodiment in which the first touch electrode 111 covers the third sub-electrode 131 and the second touch electrode 121 covers the third sub-electrode 131 is shown, but the present application is not limited thereto. At least part of the third sub-electrode 131 can be arranged to be outside the range of the orthographic projection of the corresponding first touch electrode 111, and at least part of the third sub-electrode 131 can be arranged to be outside the range of the orthographic projection of the corresponding second touch electrode 121. The user can adjust the orthographic projection relationship among the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 according to the actual design requirement.

[0049] Please continue to refer to Figures 1-5 Optionally, at least part of the first touch electrodes 111 are connected in series through the bridge lines 30, and at least part of the second touch electrodes 121 are connected in series through the bridge lines 30. At least part of the bridge lines 30 are located in the second electrode layer 13.

[0050] In particular, the application also provides an alternative arrangement mode. When the first touch electrode 111 and the second touch electrode 121 are arranged in the same layer, the first touch electrodes 111 adjacent to each other are connected in series through the bridge line 30 (the first bridge line 112), and the second touch electrodes 121 adjacent to each other are connected in series through the bridge line 30 (the second bridge line 122). In order to ensure the insulation between the first touch electrode 111 and the second touch electrode 121, the first bridge line 112 and the second bridge line 122 can be arranged in different layers. For example, the first bridge line 112 can be arranged in the same layer as the first touch electrode 111 and the second touch electrode 121. In this case, at least part of the second bridge line 122 can be arranged on the side of the first electrode layer 21 facing the substrate 10, and / or at least part of the second bridge line 122 can be arranged on the side of the first electrode layer 21 away from the substrate 10. In this case, the third sub-electrode 131 can be arranged in the same layer as the second bridge line 122, that is, the second bridge line 122 and the third sub-electrode 131 are arranged in the second electrode layer 13. In this way, the arrangement of the third sub-electrode 131 does not increase the thickness of the touch panel 100, and the second bridge line 122 and the third sub-electrode 131 can be manufactured by at least partially the same process, thereby simplifying the manufacturing process of the touch panel 100 and improving the manufacturing efficiency of the touch panel 100.

[0051] Of course, the application does not limit that the third sub-electrode 131 must be arranged in the same layer as the second bridge line 122, nor does it limit that the third sub-electrode 131 must be arranged in the same layer as the first bridge line 112. The user can arrange the second electrode layer 13 on the side of the first electrode layer 21 facing the substrate 10 or on the side of the first electrode layer 21 away from the substrate 10 according to the needs. In addition, when conditions permit, part of the third sub-electrode 131 can be arranged on the side of the first electrode layer 21 facing the substrate 10, and part of the third sub-electrode 131 can be arranged on the side of the first electrode layer 21 away from the substrate 10. That is, the user can adjust the film layer arrangement position of the third sub-electrode 131 in the touch panel 100 according to the needs.

[0052] Please continue to refer to Figures 1-5 Optionally, in the direction perpendicular to the plane on which the substrate 10 is located, the shape of the first touch electrode 111 is the same as the shape of the third sub-electrode 131, and / or the shape of the second touch electrode 121 is the same as the shape of the third sub-electrode 131.

[0053] Specifically, the application also provides an alternative setting mode, in the direction perpendicular to the plane where the substrate 10 is located, the shape of the first touch electrode 111 and the shape of the corresponding third sub-electrode 131 are selected to be the same, and / or the shape of the second touch electrode 121 and the shape of the corresponding third sub-electrode 131 are selected to be the same; since the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 will reflect the external ambient light incident on their surfaces, the same pattern shape setting has the same reflection effect in optics, therefore, by setting at least part of the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 to have the same shape, the reflection effect of the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 on the external ambient light can be achieved, and the reflection effect of the first touch electrode 111 and the second touch electrode 121 on the external ambient light is almost the same. By such a setting, the setting of the third sub-electrode 131 can avoid uneven reflection of the touch panel 100 on the external ambient light, avoid the existence of pattern visibility, thereby avoiding the influence of the setting of the third sub-electrode 131 on the display effect of the corresponding touch display panel.

[0054] Figure 6 Fig. 2 shows a schematic diagram of a second electrode layer in a touch panel provided by an embodiment of the application, Figure 7 Fig. 3 shows another schematic diagram of a second electrode layer in a touch panel provided by an embodiment of the application, please refer to Figure 6 and Figure 7 Optionally, at least part of the third sub-electrodes 131 are electrically connected.

[0055] Specifically, the application also provides an alternative setting mode, in the direction perpendicular to the plane where the substrate 10 is located, the shape of the first touch electrode 111 and the shape of the corresponding third sub-electrode 131 are selected to be the same, and / or the shape of the second touch electrode 121 and the shape of the corresponding third sub-electrode 131 are selected to be the same; since the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 will reflect the external ambient light incident on their surfaces, the same pattern shape setting has the same reflection effect in optics, therefore, by setting at least part of the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 to have the same shape, the reflection effect of the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 on the external ambient light can be achieved, and the reflection effect of the first touch electrode 111 and the second touch electrode 121 on the external ambient light is almost the same. By such a setting, the setting of the third sub-electrode 131 can avoid uneven reflection of the touch panel 100 on the external ambient light, avoid the existence of pattern visibility, thereby avoiding the influence of the setting of the third sub-electrode 131 on the display effect of the corresponding touch display panel. Figure 7 As shown in Fig. 2, when the third sub-electrodes 131 are arranged in the same layer, a full-area mesh structure of the third sub-electrodes 131 in the display area of the touch display device corresponding to the touch panel can be formed. Figure 6 and Figure 7 As shown in Fig. 2, when the third sub-electrodes 131 are arranged in the same layer, a full-area mesh structure of the third sub-electrodes 131 in the display area of the touch display device corresponding to the touch panel can be formed. As shown in Fig. 2, by electrically connecting the third sub-electrodes 131 arranged in the same film layer, the number of electric signal lines required for transmitting electric signals to the third sub-electrodes 131 can be reduced. For example, when the third sub-electrodes 131 are arranged in a full-area mesh structure, only one electric signal line can be selected to be electrically connected with the third sub-electrodes 131, and the transmission of electric signals to all the third sub-electrodes 131 can be realized. Therefore, the number of electric signal lines electrically connected with the third sub-electrodes 131 can be reduced, and the area of the touch panel can be saved. In addition, the wiring setting of the touch panel can be simplified, which is conducive to simplifying the manufacturing process of the touch panel and improving the manufacturing efficiency of the touch panel.

[0056] In addition, it is also necessary to supplement that when the conditions permit, the third sub-electrode 131 can be set to occupy a complete film layer structure, at this time, the third sub-electrode 131 can be set to a planar structure, or a block structure, or a strip structure, etc. The user can set the film layer and the shape of the third sub-electrode 131 according to the needs, and the present application does not make specific limitations. For example, when the third sub-electrode 131 is set to a planar structure, the reflection effect of the entire touch panel 100 to the external environment light is quite, and it will not cause the problem that the reflection effect of different areas of the touch panel 100 to the external environment light is different. Therefore, the influence of different intensities of reflected light on the display effect of the touch display device can be avoided, thereby improving the display effect of the touch display device.

[0057] It is also necessary to supplement that, Figure 6 、 Figure 7 Only two kinds of electrical connections between the third sub-electrodes 131 are shown, but the present application is not limited thereto, and the user can adjust the electrical connection mode between the third sub-electrodes 131 according to actual needs.

[0058] Figure 8 A schematic diagram of the scanning signal and the first driving signal provided by the embodiment of the present application is shown. Please refer to Figures 1-5 and Figure 8 Optionally, the first touch electrode 111 and / or the second touch electrode 121 receives the scanning signal SS1, and the third sub-electrode 131 receives the first driving signal SS2. The polarities of the scanning signal SS1 and the first driving signal SS2 are opposite.

[0059] Specifically, the present application also provides an alternative setting mode. When the touch panel 100 is working, the first touch electrode 111 and / or the second touch electrode 121 can be set to receive the scanning signal SS1, and at the same time, the third sub-electrode 131 can be set to receive the first driving signal SS2. The polarities of the scanning signal SS1 and the first driving signal SS2 can be set to be opposite, so as to offset the adverse effects of the noise signal existing when the scanning signal SS1 is transmitted to the first touch electrode 111 and / or the second touch electrode 121 on the partial components of the display panel in the corresponding touch display device. That is, for the horizontal stripe problem of the first touch electrode 111 and the second touch electrode 121 of the touch panel 100 due to self-capacitance scanning when working, by giving the third sub-electrode 131 an opposite signal during self-capacitance scanning, the self-capacitance of the touch sensing electrode and the electric field generated by the third sub-electrode 131 can offset each other, thereby weakening or eliminating the adverse effects of the noise generated by the touch sensing electrode of the touch panel 100 when working on the display effect of the display panel in the corresponding touch display device, thereby improving the display effect of the corresponding touch display device.

[0060] Please continue to refer to Figures 1-5 and Figure 8 Optionally, the waveforms of the scanning signal SS1 and the first driving signal SS2 are the same.

[0061] Specifically, the application also provides an alternative setting mode, when the first touch electrode 111 and / or the second touch electrode 121 receives the scanning signal SS1, the third sub-electrode 131 receives the first driving signal SS2, the polarities of the scanning signal SS1 and the first driving signal SS2 are set to be opposite, and the scanning signal SS1 and the first driving signal SS2 are further selected to have the same waveform, as shown in Figure 8 The scanning signal SS1 and the first driving signal SS2 are both sawtooth waveforms, which can more accurately realize the mutual cancellation between the noise signal generated by the scanning signal SS1 and the first driving signal SS2, thereby more accurately reducing or eliminating the adverse effects of the noise generated by the touch sensing electrode of the touch panel 100 on the display effect of the display panel in the corresponding touch display device during work, and further improving the display effect of the corresponding touch display device.

[0062] It should be noted that the mutual cancellation of the self-capacitance of the touch sensing electrode and the electric field generated by the third sub-electrode 131 can reduce the driving signal capability coupled to the DDIC end, thereby reducing the influence of the noise generated by the touch sensing electrode of the touch panel 100 on the display effect of the display panel in the corresponding touch display device during work, so as to improve the display effect of the corresponding touch display device; wherein the DDIC is a driving chip of the display panel.

[0063] It should be noted that Figure 8 Only the scanning signal SS1 and the first driving signal SS2 are both sawtooth waveforms as an example, but the application is not limited thereto, and the user can adjust the waveforms of the scanning signal SS1 and the first driving signal SS2 according to actual needs.

[0064] Please refer to Figure 1 , Figure 2 and Figure 4 Optionally, the second electrode layer 13 is located between the substrate 10 and the first electrode layer 21.

[0065] Specifically, the application also provides an optional arrangement mode, that is, the second electrode layer 13 is arranged between the substrate 10 and the first electrode layer 21, that is, all the third sub-electrodes 131 are arranged between the substrate 10 and the first electrode layer 21, so as to reduce the noise between the first electrode layer 21 and the display panel of the corresponding touch display device; generally, part of the bridge lines 30 in the touch panel 100 are arranged on the side of the touch sensing electrode facing the substrate 10, therefore, all the third sub-electrodes 131 can be arranged in the same layer as the bridge lines 30, so as to avoid the increase of the thickness of the touch panel 100 caused by the arrangement of the third sub-electrodes 131, and the bridge lines 30 and the third sub-electrodes 131 can also be manufactured by using at least partially same process, so as to simplify the manufacturing process of the touch panel 100 and improve the manufacturing efficiency of the touch panel 100.

[0066] Please refer to Figures 1-5 Optionally, the manufacturing material of the third sub-electrode 131 is same as that of the first touch electrode 111, and / or the manufacturing material of the third sub-electrode 131 is same as that of the second touch electrode 121.

[0067] Specifically, the application also provides an optional arrangement mode, that is, the third sub-electrode 131 and the first touch electrode 111 in the touch panel 100 are manufactured by using same material, or the third sub-electrode 131 and the second touch electrode 121 in the touch panel 100 are manufactured by using same material, or the first touch electrode 111, the second touch electrode 121 and the third sub-electrode 131 in the touch panel 100 are manufactured by using same material, so as to reduce the types of materials required for manufacturing the touch panel 100, the same type of material can be manufactured by using same manufacturing process, thereby simplifying the manufacturing process of the touch panel 100 and improving the manufacturing efficiency of the touch panel 100.

[0068] Figure 9 Fig. 1 shows a schematic diagram of a touch display device provided by an embodiment of the application, Figure 10 Fig. 2 shows a schematic diagram of a touch display device provided by an embodiment of the application, Figure 9 Fig. 3 shows a schematic diagram of a touch display device provided by an embodiment of the application, and Figures 1-8 Please refer to Figure 9 and Figure 10 Based on the same inventive concept, the application also provides a touch display device 200, which comprises a touch panel 100. The touch panel 100 is any one of the touch panels 100 provided by the application;

[0069] The touch display device 200 further comprises a display panel 300, which is located on the side of the touch panel 100 away from the light-out surface of the touch display panel 300.

[0070] Specifically, the touch display device 200 generally comprises a display panel 300 in addition to the touch panel 100. The display panel 300 can be arranged on the side of the touch panel 100 away from the light exit surface of the touch display device 200. In this way, the distance between the touch panel 100 and the light exit surface of the touch display device 200 can be shortened, so that the touch panel 100 has a good touch sensing effect, and the problem of poor touch effect caused by too large distance between the touch panel 100 and the finger or conductive object can be avoided.

[0071] Figure 11 Fig. 1 shows a schematic diagram of a touch signal and a second driving signal provided by an embodiment of the present application. Please refer to Figures 1-8 Referring to Figures 9-11 Optionally, the touch panel 100 comprises a second electrode layer 13, and the second electrode layer 13 comprises a plurality of third sub-electrodes 131.

[0072] The touch display device 200 further comprises a first driving chip IC1 and a second driving chip IC2. The display panel 300 is electrically connected to the first driving chip IC1 (not shown), and the touch panel 100 is electrically connected to the second driving chip IC2 (not shown). The first driving chip IC1 collects the touch signal SS3 of the touch panel 100, and the second driving chip IC2 outputs the second driving signal SS4 to the third sub-electrodes 131.

[0073] The touch signal SS3 and the second driving signal SS4 are opposite in polarity.

[0074] Specifically, the application also provides an alternative setting mode, the touch display device 200 can include at least two driving chips, at least one is a first driving chip IC1 electrically connected with the display panel 300, and at least one is a second driving chip IC2 electrically connected with the touch panel 100, wherein the first driving chip IC1 is selected to at least collect the touch signal SS3 of the touch panel 100, and the second driving chip IC2 is selected to at least output the second driving signal SS4 to the third sub-electrode 131, and the polarities of the touch signal SS3 and the second driving signal SS4 are set to be opposite, so as to offset the adverse effect of the noise signal existing when the first driving chip IC1 transmits to the first touch electrode 111 and / or the second touch electrode 121 on the partial components of the display panel 300; that is, for the horizontal stripe problem of the first touch electrode 111 and the second touch electrode 121 of the touch panel 100 when working due to self-capacitance scanning, an opposite signal can be given to the third sub-electrode 131 when self-capacitance scanning, so that the self-capacitance of the touch sensing electrode and the electric field generated by the third sub-electrode 131 can offset each other, thereby weakening or eliminating the adverse effect of the noise generated by the touch sensing electrode of the touch panel 100 when working on the display effect of the display panel 300, thereby improving the display effect of the corresponding touch display device 200.

[0075] It should be further supplemented that the second driving chip IC2 can be selected to set two signal output end units, at this time, at least two signal lines can be selected to be electrically connected with the two signal output units respectively, and then the other end of the signal line is electrically connected with the third sub-electrode 131, compared with only one signal line being electrically connected with the third sub-electrode 131, transmitting the electric signal of the touch IC2 through two ports can reduce the signal transmission pressure.

[0076] It should be noted that the embodiments of the touch display device provided by the application can refer to the embodiments of the touch panel described above, and repeated description will not be repeated. The touch display device provided by the application can be any product and component with touch function and display function, such as mobile phone, tablet computer, television, display, notebook computer, vehicle-mounted display screen, navigator, etc.

[0077] From the above embodiments, it can be known that the touch panel and the touch display device provided by the application at least achieve the following beneficial effects:

[0078] The application provides a touch panel and a touch display device. The touch panel is provided with a first electrode layer, a second electrode layer, a third sub-electrode, and a first touch electrode and a second touch electrode. The second electrode layer is arranged on one side of the first electrode layer. The third sub-electrode is arranged in the second electrode layer. The third sub-electrode at least partially overlaps with the first touch electrode and / or the second touch electrode. The third sub-electrode is arranged below or above the first touch electrode and / or the second touch electrode. The third sub-electrode and the electric signal applied to the third sub-electrode are used to offset the noise generated by the touch panel and affect the display panel, so as to slow down or eliminate the noise generated by the touch sensing electrode during operation and affect the display effect of the display panel, thereby improving the display effect of the touch display device.

[0079] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A touch panel, characterized by, The application relates to a touch panel, comprising: a substrate and a first electrode layer arranged on a first side of the substrate, the first electrode layer comprising a plurality of first touch units extending along a first direction and a plurality of second touch units extending along a second direction, the first direction and the second direction intersecting; the first touch unit comprises a plurality of first touch electrodes arranged along the first direction and connected in series with each other, the second touch unit comprises a plurality of second touch electrodes arranged along the second direction and connected in series with each other, the first touch electrodes and the second touch electrodes being insulated; a second electrode layer arranged on the first side of the substrate, the first electrode layer and the second electrode layer being separated by an insulating layer in a direction perpendicular to the plane of the substrate; the second electrode layer comprises a plurality of third sub-electrodes; the third sub-electrodes and the first touch electrodes at least partially overlap in the direction perpendicular to the plane of the substrate, and / or the third sub-electrodes and the second touch electrodes at least partially overlap in the direction perpendicular to the plane of the substrate; the first touch electrodes and / or the second touch electrodes receive a scanning signal, and the third sub-electrodes receive a first driving signal, the polarities of the scanning signal and the first driving signal being opposite.

2. The touch panel according to claim 1, wherein the first touch electrodes cover the third sub-electrodes in the direction perpendicular to the plane of the substrate, and / or the second touch electrodes cover the third sub-electrodes in the direction perpendicular to the plane of the substrate.

3. The touch panel according to claim 1, wherein at least part of the first touch electrodes are connected in series by bridge lines, and at least part of the second touch electrodes are connected in series by bridge lines, and at least part of the bridge lines are located in the second electrode layer.

4. The touch panel according to claim 1, wherein the shapes of the first touch electrodes and the third sub-electrodes are the same in the direction perpendicular to the plane of the substrate, and / or the shapes of the second touch electrodes and the third sub-electrodes are the same in the direction perpendicular to the plane of the substrate.

5. The touch panel according to claim 1, wherein at least part of the third sub-electrodes are electrically connected.

6. The touch panel according to claim 1, wherein the waveforms of the scanning signal and the first driving signal are the same.

7. The touch panel according to claim 1, wherein the second electrode layer is located between the substrate and the first electrode layer.

8. The touch panel according to claim 1, wherein the material for manufacturing the third sub-electrodes is the same as that for manufacturing the first touch electrodes, and / or the material for manufacturing the third sub-electrodes is the same as that for manufacturing the second touch electrodes. The application relates to a touch display device, comprising the touch panel according to any one of claims 1-8. The touch display device further comprises a display panel, and the display panel is located on the side of the touch panel away from the light exit surface of the touch display device.

10. The touch display device according to claim 9, wherein the touch panel comprises a second electrode layer, and the second electrode layer comprises a plurality of third sub-electrodes. ​ ​ ​ ​ ​ ​ ​ ​ 9. A touch display device, comprising: ​ ​ ​ ​ The touch display device further comprises a first driving chip and a second driving chip, the display panel is electrically connected with the first driving chip, the touch panel is electrically connected with the second driving chip, the first driving chip collects the touch signal of the touch panel, and the second driving chip outputs a second driving signal to the third sub-electrode. The touch signal and the second driving signal are opposite in polarity.

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