Touch display panel

Abstract

The application provides a touch display panel, which comprises a substrate and a touch layer; the touch layer is located on one side of the substrate and comprises a touch electrode area and a wiring area located at the periphery of the touch electrode area; at least part of a touch wiring in the touch layer is located in the wiring area; at least one ground wiring and at least one electrically floating part are arranged in the same layer as the touch wiring and are located in the wiring area. By adding the electrically floating part in the wiring area, the application can reduce the static jump from the ground wiring to the touch wiring, reduce the risk of the touch wiring being electrocuted, and meanwhile, the electrically floating part can block or absorb external static energy, thereby improving the anti-static capacity of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a touch display panel. BACKGROUND

[0002] At present, the mainstream display panel on the market generally has a touch function, and is mostly a capacitive touch technology. The capacitive touch technology refers to a touch technology that uses a finger to approach a touch display panel to make the touch display panel generate a capacitance change, and then obtains a touch coordinate through the capacitance change to realize a touch operation. However, in the current production and use process, the touch display panel has been plagued by static electricity, and a certain proportion of defective products with damaged touch function caused by static electricity has been maintained. SUMMARY

[0003] The present application provides a touch display panel to solve the technical problem that the touch function of the touch display panel is invalid due to the static electricity damaging the touch electrode area or the touch wire.

[0004] To solve the above technical problem, one technical solution adopted by the present application is to provide a touch display panel, comprising: a substrate; a touch layer located on one side of the substrate, comprising a touch electrode area and a wire area located at the periphery of the touch electrode area; wherein at least part of the touch wire in the touch layer is located in the wire area; at least one ground wire and at least one electrically floating piece are provided in the same layer as the touch wire and are located in the wire area.

[0005] In an optional embodiment, at least part of the ground wire and the adjacent at least part of the touch wire have a first interval greater than a first threshold value, and the electrically floating piece is arranged in at least part of the first interval; preferably, the first threshold value is greater than or equal to 9 microns.

[0006] In an optional embodiment, the number of ground wires is multiple, at least one touch wire is arranged between two adjacent ground wires, and the electrically floating piece is arranged between at least part of the ground wires and the adjacent touch wires.

[0007] In an optional embodiment, the width of the electrically floating piece is greater than or equal to 3 microns.

[0008] In an optional embodiment, at least part of the ground wire adjacent to the touch electrode area and the touch electrode area, and / or at least part of the touch wire and the touch electrode area have a second interval greater than a second threshold value, and the electrically floating piece is arranged in at least part of the second interval; preferably, the second threshold value is greater than or equal to 9 microns.

[0009] In an optional embodiment, the electrically floating member has a third spacing greater than a third threshold value from at least part of the ground trace adjacent to the electrically floating member, and / or from at least part of the touch trace adjacent to the electrically floating member; preferably, the third threshold value is greater than or equal to 3 microns.

[0010] In an optional embodiment, at least part of the electrically floating member comprises a plurality of electrically floating portions arranged at intervals along the extension direction of the electrically floating member.

[0011] In an optional embodiment, the touch trace, the ground trace and the electrically floating member are made of the same material.

[0012] In an optional embodiment, the touch layer comprises: a trace layer located on one side of the substrate, comprising the touch trace, the ground trace and the electrically floating member arranged in insulation with each other, the electrically floating member being arranged at least between the touch trace and the ground trace; a first insulating layer covering the trace layer on the side away from the substrate; a touch electrode layer located on the side of the first insulating layer away from the substrate, comprising a plurality of touch electrodes, the touch electrodes being electrically connected to the touch trace; and a second insulating layer located on the side of the touch electrode layer away from the substrate.

[0013] In an optional embodiment, the first insulating layer is provided with a groove on the side away from the substrate, and the touch electrode layer is located in the groove.

[0014] Compared with the prior art, the application has the following beneficial effects: by adding the electrically floating member in the trace area, the electrically floating member can block or absorb external static charges, thereby improving the anti-static capability of the product, reducing the probability of static jump from the ground trace to the touch trace, and reducing the risk of static shock to the touch trace. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 is a structural schematic diagram of an embodiment of the touch display panel of the application;

[0017] Figure 2 is Figure 1 is a top view schematic diagram of an embodiment of the touch display panel in the application;

[0018] Figure 3is a structural schematic diagram of an embodiment of the touch display panel of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the touch display panel of the present application. The touch display panel 10 includes a substrate 100, a touch layer 101, at least one ground trace 1012 and at least one electrically floating member 1013.

[0021] Specifically, the touch layer 101 is located on one side of the substrate 100 and includes a touch electrode area 1001 and a trace area 1002 located at the periphery of the touch electrode area 1001. The trace area 1002 is arranged along the periphery of the touch electrode area 1001, which can maximize the area of the touch electrode area 1001 and facilitate user touch operation. Optionally, a plurality of touch electrodes (not shown in the figure) are arranged in the touch electrode area 1001. At least part of the touch trace 1011 in the touch layer 101 is located in the trace area 1002, and the remaining part of the touch trace 1011 is located in the touch electrode area 1001 and electrically connected to the corresponding touch electrode. In addition, a terminal area (not shown in the figure) can also be arranged in the trace area 1002, and one end of the touch trace 1011 can extend into the terminal area. Figure 1 Figure 1

[0022] The ground trace 1012 and the electrically floating member 1013 are arranged in the same layer as the touch trace 1011 and are located in the trace area 1002. The material of the electrically floating member 1013 can be metal or other conductive substances, and the electrically floating member 1013 is electrically insulated from the touch trace 1011 and the ground trace 1012; for example, the electrically floating member 1013 is arranged in a spaced manner between the surrounding adjacent touch trace 1011 and ground trace 1012. Optionally, the material of the electrically floating member 1013 can be indium tin oxide (ITO), silver nanowire (AgNW), molybdenum (Mo), molybdenum-aluminum-molybdenum alloy (MoAlMo), molybdenum-niobium alloy (MoNb), copper (Cu), etc.

[0023] ​​In the above design, the ground wires 1012 are arranged in the same layer as the touch wires 1011 and are located in the wire area 1002. In order to reduce the probability of static jump from the ground wires 1012 to the touch wires 1011, the application increases the electrically floating members 1013 in the wire area 1002. The electrically floating members 1013 can block or absorb external static charges, improve the anti-static capability of the product, reduce the probability of static jump from the ground wires 1012 to the touch wires 1011, and reduce the risk of static shock to the touch wires 1011.

[0024] In one embodiment, please refer to Figure 2 , Figure 2 is Figure 1 a top view of an embodiment of the touch display panel. The number of ground wires 1012 is multiple, and at least one touch wire 1011 is arranged between adjacent two ground wires 1012. The electrically floating members 1013 are arranged between at least part of the ground wires 1012 and the adjacent touch wires 1011. The above ground wires 1012 are used to guide the normally generated static electricity to the ground terminal, reducing the influence of static electricity on the touch wires 1011. In order to prevent the static electricity on the ground wires 1012 from jumping to the adjacent touch wires 1011, the electrically floating members 1013 are arranged between the ground wires 1012 and the adjacent touch wires 1011, so as to ensure the anti-static capability of the touch display panel.

[0025] In one application scenario, as shown in Figure 2 , the ground wires 1012 can be arranged adjacent to the outer edge of the touch display panel 10, so as to reduce the influence of external static electricity on the touch display panel. In addition, the ground wires 1012 can also be arranged adjacent to the touch electrode area 1001, and at this time, the ground wires 1012 can be arranged between the adjacent touch wires 1011, so as to reduce the influence of internal static electricity on the touch display panel. It can be seen that one end of the ground wires 1012 can extend to the terminal area 1003 like the touch wires 1011. In summary, the position of the ground wires 1012 is not limited, and the position of the ground wires 1012 can be changed according to the actual situation. Please continue to refer to Figure 1 , at least part of the ground wires 1012 and at least part of the adjacent touch wires 1011 have a first interval D1 greater than a first threshold value, and the electrically floating members 1013 are arranged in at least part of the first interval D1. That is, in this design, the electrically floating members 1013 are arranged between the touch wires 1011 and the ground wires 1012 with large intervals, thereby reducing the probability of short circuit between the electrically floating members 1013 and the adjacent touch wires 1011 and ground wires 1012, so as to ensure the anti-static capability of the touch display panel.

[0026] Optionally, the first threshold is greater than or equal to 9 microns (e.g., 10 microns, 11 microns, 12 microns, etc.). That is, the first spacing D1 between the at least partial ground trace 1012 and the adjacent at least partial touch trace 1011 is greater than 9 microns, and the electrically floating member 1013 can be disposed within the at least partial first spacing D1 greater than 9 microns. In the above design, the electrically floating member 1013 is disposed in a larger spacing, which can make the width of the electrically floating member 1013 within the larger spacing as large as possible, and the resistance of the electrically floating member 1013 as small as possible, so that the electrically floating member 1013 has a stronger ability to conduct static electricity.

[0027] In the above embodiments, the electrically floating member 1013 is located between the adjacent touch trace 1011 and the ground trace 1012. In other embodiments, the electrically floating member 1013 can also be located at other positions. For example, please refer to Figure 1 and Figure 2 , the at least partial ground trace 1012 adjacent to the touch electrode region 1001 has a second spacing D2 greater than a second threshold from the touch electrode region 1001, and the electrically floating member 1013 is disposed within the at least partial second spacing D2. The above design can reduce the probability of static electricity jump on the ground trace 1012 to the touch electrode of the touch electrode region 1001, so as to ensure the touch effect.

[0028] For another example, please refer to Figure 3 , Figure 3 is a structural schematic diagram of another embodiment of the touch display panel of the present application. The at least partial touch trace 1011 has a second spacing D2 greater than a second threshold from the touch electrode region 1001, and the electrically floating member 1013 is disposed within the at least partial second spacing D2. The above design can reduce the probability of static electricity jump on the touch trace 1011 to the touch electrode of the touch electrode region 1001, so as to ensure the touch effect.

[0029] Optionally, the above second threshold is greater than or equal to 9 microns (e.g., 10 microns, 11 microns, 12 microns, etc.). That is, the second spacing D2 between the at least partial ground trace 1012 or the touch trace 1011 and the touch electrode region 1001 is greater than 9 microns, and the electrically floating member 1013 can be disposed within the at least partial second spacing D2 greater than 9 microns. In the above design, the electrically floating member 1013 is disposed in a larger spacing, which can make the width of the electrically floating member 1013 within the larger spacing as large as possible, and the resistance of the electrically floating member 1013 as small as possible, so that the electrically floating member 1013 has a stronger ability to conduct static electricity.

[0030] Optionally, as Figure 1As shown, the width D4 of the electric floating member 1013 is greater than or equal to 3 microns (for example, 3 μm, 4 μm, 5 μm, 6 μm, etc.). In the above design, the width of the electric floating member 1013 is relatively large, the resistance value is relatively low, the ability of conducting away static electricity is relatively strong, and thus the probability of static electricity jumping from the ground wire 1012 to the touch wire 1011 can be further reduced.

[0031] Alternatively, as shown in FIG. 1C, the electric floating member 1013 has a third interval D3 with the adjacent at least part of the ground wire 1012, and / or the electric floating member 1013 has a third interval D3 with the adjacent at least part of the touch wire 1011. The third interval D3 is greater than a third threshold value. The design of the third interval D3 can reduce the probability of short circuit between the electric floating member 1013 and the adjacent ground wire 1012 and / or touch wire 1011. Figure 1 Preferably, the third threshold value is greater than or equal to 3 microns (for example, 4 microns, 5 microns, 6 microns, etc.); that is, the interval between the electric floating member 1013 and the adjacent ground wire 1012 and / or touch wire 1011 is greater than 3 microns. The design can further reduce the probability of short circuit between the electric floating member 1013 and the adjacent ground wire 1012 and / or touch wire 1011.

[0032] Please refer again to

[0033] , at least part of the electric floating member 1013 includes a plurality of electric floating parts 10131 arranged at intervals along the extension direction of the electric floating member 1013. In the above design, the electric floating member 1013 located in the same circle is segmented into a plurality of electric floating parts 10131, which can effectively reduce the difficulty of setting the electric floating member 1013, and the static electricity charge accumulated by the electric floating part 10131 can be released through the gap between the adjacent electric floating parts 10131, so as to increase the ability of the electric floating member 1013 to conduct away static electricity. Figure 2 In addition, in the present application, the touch wire 1011, the ground wire 1012 and the electric floating member 1013 are made of the same material. The design can make the electric floating member 1013, the touch wire 1011 and the ground wire 1012 be made at the same time, reduce the difficulty of production process, and reduce the cost of process production.

[0034] Please refer again to

[0035] , the touch layer 101 includes a wire layer 1021, a first insulating layer 1022, a touch electrode layer 1023 and a second insulating layer 1024. Figure 3

[0036] ​In particular, the trace layer 1021 is located on one side of the substrate 100, and includes the touch control trace 1011, the ground trace 1012, and the electrically floating member 1013 which are arranged in an insulated manner from each other, and the electrically floating member 1013 is arranged at least between the touch control trace 1011 and the ground trace 1012. Optionally, as described in the above embodiments, the electrically floating member 1013 can also be arranged between the touch control electrode area 1001 and the adjacent touch control trace 1011 or ground trace 1012, and details are not described herein again. In addition, the above-mentioned trace area 1002 in the above embodiments has a projection on the substrate 100 which covers part of the trace layer 1021.

[0037] The first insulating layer 1022 covers the trace layer 1021 away from the substrate 100, and also fills the gaps between the adjacent traces in the trace layer 1021 to protect the trace layer 1021 and reduce the probability of short circuit between the adjacent traces in the trace layer 1021. Optionally, the above-mentioned touch control electrode area 1001 and the trace area 1002 in the above embodiments have a projection on the substrate 100 which is located inside the projection of the first insulating layer 1022 on the substrate 100. The touch control electrode layer 1023 is located on the side of the first insulating layer 1022 away from the substrate 100, and includes a plurality of touch control electrodes (not shown in the figure) which are connected to the touch control trace 1011. Optionally, the above-mentioned touch control electrode area 1001 in the above embodiments has a projection on the substrate 100 which covers the touch control electrode layer 1023. Since the touch control electrodes and the touch control trace 1011 are located in different layers, the first insulating layer 1022 is provided with conductive holes, and the touch control electrodes can be electrically connected to the touch control trace 1011 through the corresponding conductive holes. Figure 1

[0038] The second insulating layer 1024 is located on the side of the touch control electrode layer 1023 away from the substrate 100, and covers the touch control electrode layer 1023 and the first insulating layer 1022 exposed from the touch control electrode layer 1023. The second insulating layer 1024 can reduce the gaps between the adjacent touch control electrodes and reduce the probability of short circuit between the adjacent touch control electrodes, and the second insulating layer 1024 superimposed at the position of the trace area 1002 can further enhance the insulation and protection effect of the traces in the trace area 1002.

[0039] Optionally, the above-mentioned first insulating layer 1022 and the second insulating layer 1024 can be inorganic (for example, silicon nitride, silicon oxide, or silicon oxynitride, etc.) or organic (for example, epoxy, acrylic, or polyimide, etc.).

[0040] Optionally, as shown in FIG. 2, the touch control electrode layer 1023 can be arranged on the side of the first insulating layer 1022 away from the substrate 100, and the second insulating layer 1024 can be arranged on the side of the touch control electrode layer 1023 away from the substrate 100. Figure 1 ​As shown, the first insulating layer 1022 is provided with a groove 1020 on the side away from the substrate 100, and the touch electrode layer 1023 is located in the groove 1020. This design can reduce the thickness of the entire touch layer 101, and further reduce the thickness of the touch display panel 10.

[0041] The above description is merely an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A touch display panel, characterized in that, The application relates to a touch display panel, comprising: a substrate; a touch layer located on one side of the substrate, comprising a touch electrode area and a trace area located on the periphery of the touch electrode area; wherein at least part of the touch traces in the touch layer is located in the trace area; at least one ground trace and at least one electrically floating element, which are arranged in the same layer as the touch traces and are located in the trace area; wherein a first interval between at least part of the ground traces and adjacent at least part of the touch traces is greater than a first threshold value, and the electrically floating element is arranged in at least part of the first interval; a second interval between at least part of the ground traces adjacent to the touch electrode area and the touch electrode area, and between at least part of the touch traces and the touch electrode area is greater than a second threshold value, and the electrically floating element is arranged in at least part of the second interval; the number of the ground traces is multiple, at least one touch trace is arranged between adjacent two ground traces, and the electrically floating element is arranged between at least part of the ground traces and adjacent touch traces.

2. The touch display panel according to claim 1, wherein the first threshold value is greater than or equal to 9 microns. 3.The touch display panel of claim 1, wherein, the width of the electrically floating element is greater than or equal to 3 microns. 4.The touch display panel of claim 1, wherein, the second threshold value is greater than or equal to 9 microns. 5.The touch display panel of claim 1, wherein, the electrically floating element and adjacent at least part of the ground traces, and / or the electrically floating element and adjacent at least part of the touch traces have a third interval greater than a third threshold value.

6. The touch display panel according to claim 5, wherein the third threshold value is greater than or equal to 3 microns.

7. The touch display panel according to claim 1, wherein at least part of the electrically floating element comprises a plurality of electrically floating parts arranged at intervals along the extension direction of the electrically floating element. 8.The touch display panel of claim 1, wherein, the materials of the touch traces, the ground traces and the electrically floating element are the same. 9.The touch display panel of claim 1, wherein, The touch layer comprises: a trace layer located on one side of the substrate, comprising the touch traces, the ground traces and the electrically floating element arranged in insulation with each other, and the electrically floating element is arranged at least between the touch traces and the ground traces; a first insulation layer covering one side of the trace layer away from the substrate; a touch electrode layer located on one side of the first insulation layer away from the substrate, comprising a plurality of touch electrodes, and the touch electrodes are electrically connected with the touch traces; a second insulation layer located on one side of the touch electrode layer away from the substrate. 10.The touch display panel of claim 9, wherein, a groove is arranged on one side of the first insulation layer away from the substrate, and the touch electrode layer is located in the groove.

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