Touch display substrate and manufacturing method and touch method and device thereof

Abstract

The invention provides a touch display substrate, a manufacturing method of the touch display substrate, a touch method and a touch device. The touch display substrate comprises a substrate; the touch control layer comprises a plurality of first touch control channels, a plurality of second touch control channels and a plurality of touch control leads, and the first touch control channels and the second touch control channels incline by different angles relative to the first direction so as to intersect with each other; the plurality of first touch channels and the plurality of second touch channels are divided into a plurality of channel units, and at least part of the channel units comprise an independent first touch channel, and / or an independent second touch channel, and / or a first touch channel and a second touch channel which are correspondingly connected; one touch channel in at least part of the channel units extends to the binding side and forms a signal input end, and the signal input end is connected with one corresponding touch lead; and the first touch channels and the second touch channels in different touch units are insulated from each other at the intersection points. The narrow frame design of the display device can be realized.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a touch display substrate and a manufacturing method thereof, a touch control method, and a device. Background Art

[0002] As the market pursues thinner display screens, touch technology has turned to FMLOC (Flexible MultiLayer On Cell) technology, which directly integrates the touch control layer (TSP) into the display panel. However, in related technologies, the touch control circuit of the touch layer is prone to corrosion or residue. Summary of the invention

[0003] In order to solve at least one technical solution in the above-mentioned prior art, the embodiments of the present disclosure provide a touch display substrate and a manufacturing method thereof, a touch method, and a device.

[0004] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] In a first aspect, an embodiment of the present disclosure provides a touch display substrate, comprising:

[0006] A substrate, comprising a central region and a peripheral region located outside the central region, wherein the peripheral region comprises a binding side located on at least one side of the central region along a first direction;

[0007] a touch layer disposed on the base substrate, the touch layer comprising a plurality of first touch channels and a plurality of second touch channels disposed in the middle region, and a plurality of touch leads disposed on the binding side, the first touch channels and the second touch channels are respectively inclined at different angles relative to the first direction, and the first touch channels and the second touch channels intersect each other to form a plurality of intersections;

[0008] A plurality of first touch channels and a plurality of second touch channels are divided into a plurality of channel units, at least some of the channel units include a single first touch channel, and / or, at least some of the channel units include a single second touch channel, and / or, at least some of the channel units include a correspondingly connected first touch channel and a second touch channel; a touch channel in each of the channel units can extend to the binding side and form a signal input end, and be connected to a corresponding touch lead; the first touch channel and the second touch channel in different touch units are insulated from each other at the intersection.

[0009] Exemplarily, the touch layer includes a first touch metal layer and a second touch metal layer, the first touch metal layer includes a pattern of a plurality of first touch channels, and the second touch metal layer includes a pattern of a plurality of second touch channels.

[0010] Exemplarily, the signal input ends of at least some of the channel units are arranged sequentially along a second direction perpendicular to the first direction, wherein the signal input ends corresponding to the first touch channels and the signal input ends corresponding to the second touch channels are alternately distributed sequentially in the second direction.

[0011] Exemplarily, the middle area includes a first diagonal line and a second diagonal line, the first touch channel is parallel to the first diagonal line, and the second touch channel is parallel to the second diagonal line.

[0012] Exemplarily, the plurality of first touch channels include a first diagonal touch channel, and the plurality of second touch channels include a second diagonal touch channel, the first diagonal touch channel extends along the first diagonal line, and the second diagonal touch channel extends along the second diagonal line; wherein the first diagonal touch channel serves as a channel unit alone, and the second diagonal touch channel serves as a channel unit alone.

[0013] Exemplarily, with the first diagonal line as the boundary, the plurality of first touch channels are divided into a first part and a second part, the first touch channels in the first part can extend to the binding side, and the first touch channels in the second part can extend to the opposite side of the binding side; with the second diagonal line as the boundary, the plurality of second touch channels are divided into a third part and a fourth part, the second touch channels in the third part can extend to the binding side, and the second touch channels in the fourth part can extend to the opposite side of the binding side; wherein,

[0014] The first touch channels in the first part are connected to the second touch channels in the fourth part in a one-to-one correspondence, and the first touch channels in the second part are connected to the second touch channels in the third part in a one-to-one correspondence; one first touch channel and one second touch channel connected correspondingly are regarded as a channel unit.

[0015] Exemplarily, the peripheral region further includes a first side and a second side which are arranged relatively on both sides of the middle region along a second direction perpendicular to the first direction;

[0016] On the binding side, the first touch channels of the first part and the second touch channels of the third part are arranged in sequence from the first side to the second side;

[0017] On the side opposite to the binding side, sequentially arranging the first touch channels of the second part and the second touch channels of the fourth part from the second side to the first side;

[0018] Among them, the i-th first touch channel on the binding side is correspondingly connected to the n-th second touch channel on the opposite side, and the j-th second touch channel on the binding side is correspondingly connected to the j-th first touch channel on the opposite side, and i and j are positive integers greater than or equal to 1.

[0019] Exemplarily, the peripheral area also includes a first side and a second side relatively arranged on both sides of the middle area along a second direction perpendicular to the first direction; in the same channel unit, the correspondingly connected first touch channel and the second touch channel are connected through an intersection closest to the first side or the second side; in different channel units, the first touch channel and the second touch channel are insulated from each other at the intersection to form a capacitance point.

[0020] Exemplarily, the first touch channel includes at least two first electrodes arranged in sequence and connected along its extension direction, and the second touch channel includes at least two second electrodes arranged in sequence and connected along its extension direction, and the first electrodes and the second electrodes cross and are insulated from each other to form a capacitance point.

[0021] Exemplarily, the first electrode includes two first electrode blocks spaced apart in the extension direction of the first touch channel, and a first connecting bridge connecting the two first electrode blocks, and the two first electrode blocks and the outline of the first connecting bridge form a first concave cavity; the second electrode includes two second electrode blocks spaced apart in the extension direction of the second touch channel, and a second connecting bridge connecting the two second electrode blocks, and the two second electrode blocks and the outline of the second connecting bridge form a second concave cavity; the first connecting bridge and the second connecting bridge are overlapped in a direction perpendicular to the substrate, and the two first electrode blocks are embedded in the second concave cavity, and the two second electrode blocks are embedded in the first concave cavity.

[0022] Exemplarily, the first electrode block and the second electrode block are both diamond-shaped electrode blocks.

[0023] In a second aspect, an embodiment of the present disclosure further provides a touch display device, comprising the touch display substrate as described above.

[0024] Exemplarily, the touch display device further includes a touch circuit, which is connected to the touch display substrate, and is used for:

[0025] In one scanning cycle, the scanning signal is transmitted to each of the channel units one by one, and the touch information is identified according to the signals fed back by the channel units other than the channel unit currently transmitting the scanning signal.

[0026] In a third aspect, an embodiment of the present disclosure provides a touch control method for the touch display substrate as described above; the touch control method comprises:

[0027] In one scanning cycle, the scanning signal is transmitted to each of the channel units one by one, and the touch information is identified according to the signals fed back by the channel units other than the channel unit currently transmitting the scanning signal.

[0028] In a fourth aspect, an embodiment of the present disclosure provides a method for manufacturing a touch display substrate, which is used to manufacture the touch display substrate as described above, and the method includes:

[0029] providing a substrate base plate;

[0030] A touch layer is formed on the base substrate, wherein the touch layer includes a plurality of first touch channels and a plurality of second touch channels arranged in the middle area, and a plurality of touch leads arranged on the binding side, the first touch channels and the second touch channels are respectively inclined at different angles relative to the first direction, and the first touch channels and the second touch channels intersect with each other to form a plurality of intersections; the plurality of first touch channels and the plurality of second touch channels are divided into a plurality of channel units, at least some of the channel units include a single first touch channel, and / or, at least some of the channel units include a single second touch channel, and / or, at least some of the channel units include a correspondingly connected first touch channel and a correspondingly connected second touch channel; a touch channel in each of the channel units can extend to the binding side and form a signal input terminal, and is connected to a corresponding touch lead; the first touch channels and the second touch channels in different touch units are insulated from each other at the intersections.

[0031] The beneficial effects brought by the embodiments of the present disclosure are as follows:

[0032] In the above scheme, a plurality of first touch channels and a plurality of second touch channels are arranged in the middle area of ​​the touch display substrate, and the first touch channels and the second touch channels are both inclined relative to the first direction pointing from the middle area to the binding side, that is, the first touch channels and the second touch channels are both designed obliquely, and the first touch channels and the second touch channels intersect each other to form a plurality of intersections; the plurality of first touch channels and the plurality of second touch channels are divided into a plurality of channel units, at least some of the channel units include a single first touch channel, and / or, at least some of the channel units include a single second touch channel, and / or, at least some of the channel units include a correspondingly connected first touch channel and a second touch channel; a touch channel in each of the channel units can extend to the binding side and form a signal input end, and be connected to a corresponding one of the touch leads.

[0033] By designing the touch channels in the touch layer obliquely, and dividing the first touch channels and the second touch channels into a plurality of channel units, and the touch channels extending to the binding side in at least some of the channel units can be used as signal input terminals to be correspondingly connected to the touch leads arranged on the binding side, the touch leads arranged on other frames (such as the left and right frames) other than the binding side can be reduced, and it can even be achieved that the touch lines are no longer arranged on the side frames other than the binding side, thereby greatly reducing the corrosion or residue of the touch lines in the corner area and other side frames, and providing a prerequisite for achieving a narrow frame of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram showing the structure of a touch display substrate in some embodiments of the present disclosure;

[0035] Figure 2 In some embodiments Figure 1 Schematic diagram of the structure of the middle Q local area. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The features such as "parallel", "perpendicular", and "same" used in the embodiments of the present disclosure include the features such as "parallel", "perpendicular", and "same" in a strict sense, as well as the cases where "approximately parallel", "approximately perpendicular", "approximately the same", etc. include certain tolerances, taking into account the tolerances associated with the measurement of specific quantities (e.g., the limitations of the measurement system), and represent the acceptable deviation range for a specific value determined by ordinary technicians in the field. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0039] In addition, in this document, unless otherwise defined, the terms "substantially", "substantially", "approximately" and "about" are used to describe and explain small changes. When used with an event or situation, these terms can cover situations where the event or situation occurs exactly, and can also cover situations where the event or situation occurs approximately. For example, when used with a numerical value, these terms can include a range of variation of less than or equal to 10% of the numerical value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, less than or equal to ±0.05%. The term "substantially coplanar" can refer to two surfaces being arranged along the same plane in the micrometer range, for example, arranged along the same plane within 40μm, 30μm, 20μm, 10μm or 1μm.

[0040] It should be understood that in the exemplary embodiments of the present disclosure, when a layer or an element is referred to as being on another layer or substrate, the layer or element may be directly on the other layer or substrate, or there may be an intermediate layer between the layer or element and the other layer or substrate. "A and B are arranged on the same layer" means that after A and B adopt the same film forming process to form a film layer for forming a specific pattern, a layer structure is formed by a single patterning process using the same mask.

[0041] Before describing in detail the touch display substrate and its manufacturing method, touch method, and device provided by the embodiments of the present disclosure, the following description is made of the related technologies:

[0042] In the related art, the on-cell touch technology of OLED (organic light emitting diode) display devices has been widely used in the industry. Among them, the on-cell touch display device of FMLOC (flexible multi-layer touch structure) can include MLOC and SLOC.

[0043] MLOC (Multi-Layer On Cell) means implementing multi-layer design on a single cell. SLOC (Single Layer On Cell) means implementing single-layer design on a single cell, with all functions being implemented on the same layer.

[0044] In the related art, the touch circuit of the touch layer has problems such as easy corrosion or residue.

[0045] The inventors of the present disclosure have found through research that one of the reasons for the above problems is:

[0046] The touch circuit of the FMLOC in-screen touch display substrate can adopt the mutual capacitance principle and is composed of two intersecting metal wire channels, namely, the Tx channel (i.e., the driving channel) and the Rx channel (i.e., the sensing channel). The Tx channel is composed of multiple rows of X-direction electrode arrays, and the Rx channel is composed of multiple rows of Y-direction electrode arrays. The X-direction electrode array and the Y-direction electrode array form a coupling capacitor Cm at the intersection. When a finger touches, the coupling capacitor decreases, and the change in the coupling capacitor is detected to determine the finger touch position.

[0047] The Y direction refers to the direction from the display area to the binding side, and the X direction refers to the direction perpendicular to the Y direction.

[0048] The design of the touch circuit is generally as follows: when the number of Tx channels in the X direction is M and the number of Rx channels in the Y direction is N, a touch scan needs to be completed M×N times. Since the touch circuit needs to be laid out in the X and Y directions respectively, the Rx channel in the Y direction must use the side frames and corner areas other than the binding side to lay out the touch leads, and then extend through the corner area to the binding side of the display panel through the touch leads.

[0049] However, when the requirement for narrow bezel is high, the space reserved for touch leads in side frames other than the binding side will be compressed, and the flatness of side frames other than the binding side is relatively poor. In actual production, corrosion or residue will occur on the touch leads in side frames other than the binding side and in the corner area.

[0050] In order to improve the above problems, the embodiments of the present disclosure provide a touch display substrate and a manufacturing method thereof, a touch method, and a device, which are conducive to realizing a narrow frame design and reducing defects such as corrosion or residue on the touch circuit.

[0051] like Figure 1 As shown, the touch display substrate provided by the embodiment of the present disclosure includes: a base substrate 100 and a touch layer 200 disposed on the base substrate 100. The base substrate 100 has a central area AA and a peripheral area B located outside the central area AA, and the peripheral area B includes a binding side B1 located at least on one side of the central area AA along a first direction. The touch layer 200 includes a plurality of first touch channels 210, a plurality of second touch channels 220, and a plurality of touch leads 230, the first touch channels 210 and the second touch channels 220 are disposed in the central area AA, and the touch leads 230 are disposed on the binding side B1.

[0052] The first touch channel 210 and the second touch channel 220 are respectively inclined at different angles relative to the first direction Y. That is, the first touch channel 210 and the second touch channel 220 are both designed obliquely, and the first touch channel 210 and the second touch channel 220 intersect each other to form a plurality of intersections F.

[0053] Multiple first touch channels 210 and multiple second touch channels 220 are divided into multiple channel units T, wherein at least some of the channel units T include a single first touch channel 210, and / or, at least some of the channel units T include a single second touch channel 220, and / or, at least some of the channel units T include a correspondingly connected first touch channel 210 and a second touch channel 220.

[0054] At least one touch channel in a portion of the channel units T may extend to the binding side B1 and form a signal input terminal, and be connected to a corresponding touch lead 230 .

[0055] That is to say, among the multiple channel units T, some of the channel units T may use a single first touch channel 210 as an independent channel unit T; some of the channel units T may use a single second touch channel 220 as an independent channel unit T; some of the channel units T may connect a first touch channel 210 and a second touch channel 220 correspondingly as an independent channel unit T, and at least some of the touch channels include a touch channel that can extend to the binding side B1 to connect with the touch lead 230 set on the binding side B1. In different channel units T, the first touch channel 210 and the second touch channel 220 can be insulated from each other at the intersection F to form a capacitor point F1.

[0056] In the above scheme, the touch channels in the touch layer 200 are designed obliquely so that multiple first touch channels 210 and multiple second touch channels 220 intersect to form multiple intersection points F; and the multiple first touch channels 210 and multiple second touch channels 220 are divided into multiple channel units T, and the channel unit T may include a separate first touch channel 210, a separate second touch channel 220, and / or a first touch channel 210 and a second touch channel 220 connected to each other. The intersection points F of the first touch channels 210 and the second touch channels 220 of different channel units T are insulated to form a capacitance point F1, and at least one of the touch channels included in some of the channel units T can extend to the binding side B1 and serve as the signal input end of the corresponding channel unit T to be correspondingly connected to the touch lead 230 arranged on the binding side B1.

[0057] In this way, the signal input end of each channel unit T can be arranged on the binding side B1, thereby reducing the layout of the touch lead 230 on the side frames other than the side where the binding side B1 is located, and even completely eliminating the need to use the side frames other than the binding side B1 to layout the touch circuit, thereby greatly reducing the corrosion or residue of the touch circuit in the corner area and other side frames, providing a prerequisite for achieving a narrow frame of the display device.

[0058] The working process of the touch display substrate provided by the embodiment of the present disclosure may be as follows:

[0059] In one scanning cycle, the scanning signal is transmitted to each channel unit T one by one, and the touch information is identified according to the signals fed back by the channel units T other than the channel unit T currently transmitting the scanning signal.

[0060] For example, there are m channel units T, and the m channel units T are sorted as T1, T2, ... Tm, and scan and detect from channel unit T1 to channel unit Tm in sequence. Taking the scanning and detection of channel unit T1 as an example, when the scanning signal is transmitted on channel unit T1, the other channel units T except channel unit T1 receive the signal and can be compared with the preset standard signal to confirm whether the capacitance point F1 of channel unit T1 is touched. After the scanning and detection of channel unit T1 is completed, channel unit T2 can be scanned and detected in the same way until channel unit Tm.

[0061] Furthermore, since, during a scanning cycle, when a channel unit T is scanned, the capacitance points F1 formed by the intersection of other channel units T and the channel unit T can all be used for touch recognition, the touch display substrate provided in the embodiment of the present disclosure can also realize multi-touch detection within a scanning cycle.

[0062] It should be noted that in the above scheme, at least one touch channel in some of the channel units T (which may be the first touch channel 210 or the second touch channel 220) can extend to the binding side B1 and form a signal input terminal, and be connected to a corresponding one of the touch leads 230. The implementation method included may be that each channel unit T includes a touch channel that can extend to the binding side B1 and is connected to the touch lead 230; or only some of the channel units T include touch channels that can extend to the binding side B1 and are connected to the touch lead 230, and another part of the channel units T can choose other methods to connect to the binding side B1.

[0063] Specifically, in some embodiments, when only a portion of the channel unit T includes a touch channel that can extend to the binding side B1, the middle area AA also includes an opposite side B2 opposite to the binding side B1 along the first direction Y, and the portion of the channel unit T may include a touch channel extending to the opposite side B2, and the touch channel extending to the opposite side B2 is led out from the opposite side B2 as a signal input end, and some touch leads 230 can be set on the opposite side B2, and these touch leads 230 can cross the middle area AA and then be connected to the binding side B1.

[0064] It should be noted that when the touch lead 230 on the opposite side B2 is arranged across the middle area AA, it should be arranged on different layers from the first touch channel 210 and the second touch channel 220 and insulated from each other. In addition, in some embodiments, in order to prevent the touch lead from affecting the touch channel and other film layers in the middle area AA, the touch lead 230 can be located on the base substrate 100 and on a film layer that is farthest from the film layer where the touch channel is located in the direction perpendicular to the base substrate 100. However, this is not limited to this.

[0065] In addition, it should be noted that in some embodiments, the binding side B1 is only located on one side of the middle area AA along the first direction Y, that is, only one binding side B1 is provided; in other embodiments, one binding side B1 may be provided on two opposite sides of the middle area AA along the first direction Y. In practical applications, the number and position of the binding sides B1 may be selected according to the specific structural space of the touch-sensitive product.

[0066] In addition, in some exemplary embodiments of the present disclosure, the touch layer 200 may include a first touch metal layer TMA and a second touch metal layer TMB, the pattern of the first touch metal layer TMA includes a pattern of multiple first touch channels 210, and the pattern of the second touch metal layer TMB includes a pattern of multiple second touch channels 220.

[0067] That is, the first touch channel 210 and the second touch channel 220 can be respectively arranged in different layers, so that the intersections F of the first touch channel 210 and the second touch channel 220 in different channel units T can be insulated from each other to form a capacitor point F1.

[0068] It can be understood that, in other embodiments, the patterns of the first touch metal layer TMA and the second touch metal layer TMB can also be integrated in the same touch metal layer, and the purpose of forming a capacitor point F1 at the intersection F of the two can be achieved through a specific pattern design; it can also be that part of the pattern of the first touch metal layer TMA and the second touch metal layer TMB is located in one touch metal layer, and the other part of the pattern is located in the other touch metal layer, and the purpose of forming a capacitor point F1 at the intersection F of the two can be achieved through a specific pattern design.

[0069] Furthermore, in some exemplary embodiments, Figure 1 As shown, the signal input terminals of at least some of the channel units T are arranged in sequence along a second direction X perpendicular to the first direction Y, wherein the signal input terminals S corresponding to the first touch channels 210 and the signal input terminals S corresponding to the second touch channels 220 are alternately distributed in sequence in the second direction X.

[0070] For example, Figure 1 As shown, the channel units T corresponding to the m-2 signal input terminals S of the binding side B1 are sequentially arranged along the second direction X, namely T1, T2, ..., Tm, wherein except for the serial numbers T1 and Tm, in the other odd-numbered channel units T3, T5, ..., the first touch channel 210 is used as the signal input terminal S, and in the other even-numbered channel units T2, T4, ..., the second touch channel 220 is used as the signal input terminal S. It can be understood that the above is only an example and is not limited thereto.

[0071] The shape of the touch display substrate may include but is not limited to a rectangle. In some exemplary embodiments, the touch display substrate is a rectangular substrate, and the middle area AA may include two diagonals, namely a first diagonal a and a second diagonal b, wherein the first touch channel 210 is parallel to the first diagonal a, and the second touch channel 220 is parallel to the second diagonal b.

[0072] In this way, the plurality of first touch channels 210 can be symmetrically distributed about the first diagonal a, and the plurality of second touch channels 220 can be symmetrically distributed about the second diagonal b, ensuring that the touch channels in the entire middle area AA are symmetrically and evenly distributed, so as to evenly distribute the capacitance points F1 and make touch recognition more accurate. It is understood that in other embodiments, the inclination angles of the first touch channels 210 and the second touch channels 220 relative to the first direction Y are not limited to this.

[0073] In addition, in some exemplary embodiments, see Figure 1 As shown, multiple first touch channels 210 include a first diagonal touch channel 211, and multiple second touch channels 220 include a second diagonal touch channel 221. The first diagonal touch channel 211 extends along a first diagonal line a, and the second diagonal touch channel 221 extends along a second diagonal line b; wherein the first diagonal touch channel 211 is individually used as a channel unit T, and the second diagonal touch channel 221 is individually used as a channel unit T.

[0074] In the above scheme, the two ends of the first diagonal touch channel 211 along its extension direction can be extended to the binding side B1 and the opposite side B2 of the binding side B1 respectively. Therefore, the first diagonal touch channel 211 can be used as a channel unit T alone, and the end of the first diagonal touch channel 211 extending to the binding side B1 can be used as a signal input terminal S, connected to the touch lead 230; similarly, the two ends of the second diagonal touch channel 221 along its extension direction can be extended to the binding side B1 and the opposite side B2 of the binding side B1 respectively. Therefore, the second diagonal touch channel 221 can be used as a channel unit T alone, and the end of the first diagonal touch channel 211 extending to the binding side B1 can be used as a signal input terminal S, connected to the touch lead 230.

[0075] In some exemplary embodiments, Figure 1As shown, with the first diagonal line a as the boundary, the plurality of first touch channels 210 are divided into a first part 212 and a second part 213, the first touch channels 210 in the first part 212 can extend to the binding side B1, and the first touch channels 210 in the second part 213 can extend to the opposite side B2 of the binding side B1; with the second diagonal line b as the boundary, the plurality of second touch channels 220 are divided into a third part 222 and a fourth part 223, the second touch channels 220 in the third part 222 can extend to the binding side B1, and the second touch channels 220 in the fourth part 223 can extend to the opposite side B2 of the binding side B1; wherein,

[0076] The first touch channels 210 in the first part 212 are connected to the second touch channels 220 in the fourth part 223 in a one-to-one correspondence, and the first touch channels 210 in the second part 213 are connected to the second touch channels 220 in the third part 222 in a one-to-one correspondence; a first touch channel 210 and a second touch channel 220 connected correspondingly are regarded as a channel unit T.

[0077] In the above solution, by connecting the first touch channel 210 extending to the binding side B1 and the second touch channel 220 not extending to the binding side B1 in a one-to-one correspondence, and connecting the second touch channel 220 extending to the binding side B1 and the first touch channel 210 not extending to the binding side B1 in a one-to-one correspondence, it is possible to ensure that the number of capacitance points F1 in the entire middle area AA is as large as possible under the condition of the same number of touch channels. However, this is not limited to this.

[0078] Furthermore, in some exemplary embodiments, Figure 1 As shown, the peripheral area B further includes a first side B3 and a second side B4 which are relatively arranged on both sides of the middle area AA along a second direction X which is perpendicular to the first direction Y;

[0079] On the binding side B1, the first touch channel 210 of the first part 212 and the second touch channel 220 of the third part 222 are arranged in sequence from the first side B3 to the second side B4;

[0080] On the opposite side B2 of the binding side B1, the first touch channels 210 of the second portion 213 and the second touch channels 220 of the fourth portion 223 are arranged in sequence from the second side B4 to the first side B3;

[0081] Among them, the i-th first touch channel 210 of the binding side B1 is correspondingly connected to the n-th second touch channel 220 of the opposite side B2, and the j-th second touch channel 220 of the binding side B1 is correspondingly connected to the j-th first touch channel 210 of the opposite side B2, and i and j are positive integers greater than or equal to 1.

[0082] In this way, under the condition of the same number of touch channels, it can be ensured that the number of capacitance points F1 in the entire middle area AA is as large as possible and the distribution is relatively uniform. However, this is not limited to this.

[0083] In addition, in some exemplary embodiments, the middle area AA includes a first side B3 and a second side B4 that are oppositely arranged along a second direction X that is perpendicular to the first direction Y. In the same channel unit T, the correspondingly connected first touch channels 210 and second touch channels 220 are connected to each other through an intersection F that is closest to the first side B3 or the second side B4. Figure 1 As shown, the intersection F where the first touch channel 210 and the second touch channel 220 are connected to each other is the connection point F2.

[0084] In this way, in the same channel unit T, the first touch channel 210 and the second touch channel 220 can be connected only at a position close to the edge of the substrate. Compared with the solution of electrical connection at other positions, the number of capacitor points F1 can be guaranteed to be large and uniform to the greatest extent.

[0085] by Figure 1 Taking the embodiment shown as an example, in the touch display substrate provided by the embodiment of the present disclosure, assuming that the number of touch leads 230 is M, then in one scanning cycle, the number of capacitance points F1 that can be detected is Q=M×(M-1).

[0086] For example, assuming that the detection requirements of 3400 capacitor points F1 are met, the number of Rx channels and Tx channels in the related art are 50 and 80 respectively; while in the embodiment of the present disclosure, when the detection requirements of the same number of capacitor points F1 are met, according to the above formula Q=M×(M-1), when Q=3422, M is 59. It can be seen that the touch display substrate of the embodiment of the present disclosure only needs to arrange 59 touch leads 230 to complete the detection of the same number of capacitor points F1, which can greatly save the space of the touch leads 230 on the binding side B1 compared with the solution of arranging 50 Rx channels and 80 Tx channels in the related art.

[0087] In addition, it should be noted that, on the binding side B1 , the plurality of touch leads 230 may be distributed on both sides of the binding side B1 along the second direction X, and / or concentrated in the middle area of ​​the binding side B1 . The specific arrangement of the touch leads 230 is not limited.

[0088] In addition, in some exemplary embodiments, the first touch channel 210 and the second touch channel 220 form a touch grid pattern. Figure 1 and Figure 2As shown in the example, the first touch channel 210 includes at least two first electrodes 214 arranged in sequence and connected along its extension direction, and the second touch channel 220 includes at least two second electrodes 224 arranged in sequence and connected along its extension direction. The first electrodes 214 and the second electrodes 224 cross and are insulated from each other to form a capacitor point F1.

[0089] In addition, in some exemplary embodiments, the touch display substrate can be applied to a display panel, which may include a plurality of pixel units distributed in an array, each of which includes a plurality of sub-pixels, and each grid in the touch grid pattern may correspond to one or more sub-pixels.

[0090] Furthermore, in some exemplary embodiments, Figure 2 As shown, the first electrode 214 includes two first electrode blocks 2140 spaced apart in the extension direction of the first touch channel 210, and a first connecting bridge 2141 connecting the two first electrode blocks 2140, and the outlines of the two first electrode blocks 2140 and the first connecting bridge 2141 are enclosed to form a first concave cavity 2142; the second electrode 224 includes two second electrode blocks 2240 spaced apart in the extension direction of the second touch channel 220, and a second connecting bridge 2241 connecting the two second electrode blocks 2240, and the outlines of the two second electrode blocks 2240 and the second connecting bridge 2241 are enclosed to form a second concave cavity 2242; the first connecting bridge 2141 and the second connecting bridge 2241 are overlapped in a direction perpendicular to the base substrate 100, and the two first electrode blocks 2140 are embedded in the second concave cavity 2242, and the two second electrode blocks 2240 are embedded in the first concave cavity 2142. Exemplarily, the first electrode block 2140 and the second electrode block 2240 may both be configured as diamond-shaped electrode blocks, but are not limited thereto.

[0091] Furthermore, in some exemplary embodiments, Figure 2 As shown, the touch layer 200 may include at least a first touch metal layer TMA and a second touch metal layer TMB located between the first touch metal layer TMA and the base substrate 100, the pattern of the first touch metal layer TMA may include a pattern of a first electrode block 2140 and a first connecting bridge 2141, and the pattern of the second touch metal layer TMB may include a pattern of a second electrode block 2240 and a second connecting bridge 2241. However, this is not limited thereto.

[0092] Furthermore, in some embodiments, the touch wire 230 may be in the same layer and made of the same material as at least one of the first touch metal layer TMA and the second touch metal layer TMB, which may simplify the manufacturing process.

[0093] It should be noted that when the patterns of the first touch metal layer TMA and the second touch metal layer TMB both include the pattern of the touch lead 230, the touch lead 230 can be divided into two layers, which can increase the parallel relationship of the routing and thereby reduce the impedance. If a layer of routing is broken, the other layer of routing can serve as a backup to reduce the risk of damage.

[0094] In addition, an embodiment of the present disclosure further provides a touch display device, including the touch display substrate provided by the embodiment of the present disclosure.

[0095] Exemplarily, the touch display device further includes a touch circuit, which is connected to the touch display substrate, and the touch circuit is used for:

[0096] In one scanning cycle, the scanning signal is transmitted to each signal input terminal S one by one, and the touch information is identified according to the signal fed back from other signal input terminals S except the signal input terminal S currently transmitting the scanning signal.

[0097] Touch display devices include but are not limited to smart phones, monitors, laptops, tablet computers, electronic photo frames, driving recorders, smart wearable devices and other devices with display functions.

[0098] Other essential components of the touch display device (such as a driver chip) are well understood by those skilled in the art and will not be described in detail herein and should not be construed as limiting the present disclosure.

[0099] Since the principle of solving the problem by the touch display device is similar to the principle of solving the problem by the above-mentioned touch display substrate, the embodiment of the touch display device provided by the embodiment of the present disclosure can refer to the embodiment of the above-mentioned touch display substrate provided by the embodiment of the present disclosure, and will not be repeated here.

[0100] In addition, the embodiment of the present disclosure provides a touch control method, which is used for the touch display substrate in the embodiment of the present disclosure; the touch control method includes:

[0101] In one scanning cycle, the scanning signal is transmitted to each signal input terminal S one by one, and the touch information is identified according to the signal fed back from other signal input terminals S except the signal input terminal S currently transmitting the scanning signal.

[0102] Since the principle of solving the problem by the touch method is similar to the principle of solving the problem by the above-mentioned touch display substrate, the embodiment of the touch method provided in the embodiment of the present disclosure can refer to the embodiment of the above-mentioned touch display substrate provided in the embodiment of the present disclosure, and will not be repeated here.

[0103] In addition, the embodiment of the present disclosure provides a method for manufacturing a touch display substrate, which is used to manufacture the touch display substrate in the embodiment of the present disclosure, and the method includes:

[0104] Providing a substrate 100;

[0105] A touch layer 200 is formed on the base substrate 100, wherein the touch layer 200 includes a plurality of first touch channels 210 and a plurality of second touch channels 220 arranged in the middle area AA, and a plurality of touch leads 230 arranged on the binding side B1, the first touch channels 210 and the second touch channels 220 are respectively inclined at different angles relative to the first direction Y, and the first touch channels 210 and the second touch channels 220 intersect each other to form a plurality of intersections F; the plurality of first touch channels 210 and the plurality of second touch channels 220 are divided into a plurality of channel units T, at least some of the channel units T include a single first touch channel 210, and / or, at least some of the channel units T include a single second touch channel 220, and / or, at least some of the channel units T include a first touch channel 210 and a second touch channel 220 connected correspondingly; at least one touch channel in the channel units T can extend to the binding side B1 and form a signal input terminal S, and is connected to a corresponding touch lead 230.

[0106] For example, in the above method, the first touch channel 210 and the second touch channel 220 can be formed by a patterning process, wherein the patterning process may include processes such as exposure, development, and etching, and compared with a conventional touch display substrate, there is no need to increase the process, and only the mask opening pattern needs to be improved.

[0107] Since the principle of solving the problem by the manufacturing method of the touch display substrate is similar to the principle of solving the problem by the above-mentioned touch display substrate, the embodiment of the manufacturing method of the touch display substrate provided in the embodiment of the present disclosure can refer to the embodiment of the above-mentioned touch display substrate provided in the embodiment of the present disclosure, and will not be repeated here.

[0108] There are a few points to note:

[0109] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0110] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0111] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0112] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A touch display substrate, characterized in that: include: A substrate, comprising a central region and a peripheral region located outside the central region, wherein the peripheral region comprises a binding side located on at least one side of the central region along a first direction; a touch layer disposed on the base substrate, the touch layer comprising a plurality of first touch channels and a plurality of second touch channels disposed in the middle region, and a plurality of touch leads disposed on the binding side, the first touch channels and the second touch channels being inclined at different angles relative to the first direction to intersect with each other to form a plurality of intersections; The plurality of first touch channels and the plurality of second touch channels are divided into a plurality of channel units, at least some of the channel units include a single first touch channel, and / or at least some of the channel units include a single second touch channel, and / or at least some of the channel units include a correspondingly connected first touch channel and a second touch channel; A touch channel in at least some of the channel units can extend to the binding side and form a signal input terminal and be connected to a corresponding touch lead; the first touch channel and the second touch channel in different touch units are insulated from each other at the intersection.

2. The touch display substrate according to claim 1, characterized in that: The touch layer includes a first touch metal layer and a second touch metal layer, the first touch metal layer includes a pattern of a plurality of first touch channels, and the second touch metal layer includes a pattern of a plurality of second touch channels.

3. The touch display substrate according to claim 1, characterized in that: The signal input terminals of at least some of the channel units are arranged in sequence along a second direction perpendicular to the first direction, wherein the signal input terminals corresponding to the first touch channels and the signal input terminals corresponding to the second touch channels are alternately distributed in sequence in the second direction.

4. The touch display substrate according to claim 1, characterized in that: The middle area includes a first diagonal line and a second diagonal line, the first touch channel is parallel to the first diagonal line, and the second touch channel is parallel to the second diagonal line.

5. The touch display substrate according to claim 4, characterized in that: The multiple first touch channels include a first diagonal touch channel, and the multiple second touch channels include a second diagonal touch channel, wherein the first diagonal touch channel extends along the first diagonal line, and the second diagonal touch channel extends along the second diagonal line; wherein the first diagonal touch channel serves as a channel unit alone, and the second diagonal touch channel serves as a channel unit alone.

6. The touch display substrate according to claim 4, characterized in that: Taking the first diagonal line as the boundary, the plurality of first touch channels are divided into a first part and a second part, the first touch channels in the first part can extend to the binding side, and the first touch channels in the second part can extend to the opposite side of the binding side; taking the second diagonal line as the boundary, the plurality of second touch channels are divided into a third part and a fourth part, the second touch channels in the third part can extend to the binding side, and the second touch channels in the fourth part can extend to the opposite side of the binding side; wherein, The first touch channels in the first part are connected to the second touch channels in the fourth part in a one-to-one correspondence, and the first touch channels in the second part are connected to the second touch channels in the third part in a one-to-one correspondence; one first touch channel and one second touch channel connected correspondingly are regarded as a channel unit.

7. The touch display substrate according to claim 6, characterized in that: The peripheral region further includes a first side and a second side which are arranged opposite to each other on both sides of the middle region along a second direction perpendicular to the first direction; On the binding side, the first touch channels of the first part and the second touch channels of the third part are arranged in sequence from the first side to the second side; On the side opposite to the binding side, sequentially arranging the first touch channels of the second part and the second touch channels of the fourth part from the second side to the first side; Among them, the i-th first touch channel on the binding side is correspondingly connected to the n-th second touch channel on the opposite side, and the j-th second touch channel on the binding side is correspondingly connected to the j-th first touch channel on the opposite side, and i and j are positive integers greater than or equal to 1.

8. The touch display substrate according to claim 1, characterized in that: The peripheral area also includes a first side and a second side relatively arranged on both sides of the middle area along a second direction perpendicular to the first direction; in the same channel unit, the correspondingly connected first touch channel and the second touch channel are connected to each other through an intersection closest to the first side or the second side.

9. The touch display substrate according to claim 1, characterized in that: The first touch channel includes at least two first electrodes arranged in sequence and connected along its extension direction, and the second touch channel includes at least two second electrodes arranged in sequence and connected along its extension direction. The first electrodes and the second electrodes cross and are insulated from each other to form a capacitance point.

10. The touch display substrate according to claim 9, characterized in that: The first electrode includes two first electrode blocks spaced apart in the extension direction of the first touch channel, and a first connecting bridge connecting the two first electrode blocks, and the two first electrode blocks and the outline of the first connecting bridge form a first concave cavity; the second electrode includes two second electrode blocks spaced apart in the extension direction of the second touch channel, and a second connecting bridge connecting the two second electrode blocks, and the two second electrode blocks and the outline of the second connecting bridge form a second concave cavity; the first connecting bridge and the second connecting bridge are overlapped in a direction perpendicular to the substrate, and the two first electrode blocks are embedded in the second concave cavity, and the two second electrode blocks are embedded in the first concave cavity.

11. The touch display substrate according to claim 10, characterized in that: The first electrode block and the second electrode block are both diamond-shaped electrode blocks.

12. A touch display device, characterized in that: It comprises the touch display substrate as claimed in any one of claims 1 to 11.

13. The touch display device according to claim 12, characterized in that: It also includes a touch circuit, which is connected to the touch display substrate, and is used for: In one scanning cycle, the scanning signal is transmitted to each of the channel units one by one, and the touch information is identified according to the signals fed back by the channel units other than the channel unit currently transmitting the scanning signal.

14. A touch control method, characterized in that: Applicable to the touch display substrate according to any one of claims 1 to 11; the touch control method comprises: In one scanning cycle, the scanning signal is transmitted to each of the channel units one by one, and the touch information is identified according to the signals fed back by the channel units other than the channel unit currently transmitting the scanning signal.

15. A method for manufacturing a touch display substrate, characterized in that: For manufacturing the touch display substrate according to any one of claims 1 to 11, the method comprises: providing a substrate base plate; A touch layer is formed on the base substrate, wherein the touch layer includes a plurality of first touch channels and a plurality of second touch channels arranged in the middle area, and a plurality of touch leads arranged on the binding side, the first touch channels and the second touch channels are respectively inclined at different angles relative to the first direction, and the first touch channels and the second touch channels intersect with each other to form a plurality of intersections; the plurality of first touch channels and the plurality of second touch channels are divided into a plurality of channel units, at least some of the channel units include a single first touch channel, and / or, at least some of the channel units include a single second touch channel, and / or, at least some of the channel units include a correspondingly connected first touch channel and a correspondingly connected second touch channel; a touch channel in each of the channel units can extend to the binding side and form a signal input terminal, and is connected to a corresponding touch lead; the first touch channels and the second touch channels in different touch units are insulated from each other at the intersections.

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