Touch panel, touch display device and touch control method

Abstract

The invention relates to the technical field of touch screens, and discloses a touch panel, a touch display device and a touch control method.The touch panel comprises a plurality of emission electrodes connected with a touch chip through a plurality of first electrode leads; the plurality of receiving electrodes and the plurality of transmitting electrodes are arranged in a crossed manner, and the plurality of receiving electrodes are connected with the touch control chip through a plurality of second electrode leads; a plurality of first switches and / or a plurality of second switches, each first switch in the plurality of first switches is connected with at least two first electrode leads in the plurality of first electrode leads, and each second switch in the plurality of second switches is connected with at least two second electrode leads in the plurality of second electrode leads; the touch control chip is further used for controlling the first switch to be turned on or turned off and adjusting the number of the processed driving signals, and / or is further used for controlling the second switch to be turned on or turned off and adjusting the number of the processed detection signals. The touch response speed of the touch panel can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screens, and in particular to a touch panel, a touch display device and a touch control method. Background Art

[0002] As an input medium, touch screen is a relatively simple and convenient way of human-computer interaction, and is widely used in various electronic devices, such as mobile phones, tablets or computers. According to the working principle and the medium for transmitting information, touch screens are generally divided into four types: resistive, capacitive, infrared and surface acoustic wave. Among them, capacitive touch screen technology has become the mainstream touch screen technology due to its simple process, long life and high light transmittance.

[0003] A mutual capacitive touch screen includes a transmitting electrode layer and a receiving electrode layer. The transmitting electrode layer is provided with multiple transmitting electrodes connected to the touch chip, and the receiving electrode layer is provided with multiple receiving electrodes connected to the touch chip. The multiple transmitting electrodes and the multiple receiving electrodes cross to form multiple touch detection points. Each touch detection point has mutual capacitance. When an object such as a finger or a touch pen touches the touch screen, the mutual capacitance near the touch point changes, thereby changing the detection signal of the receiving electrode. The touch chip can use the detection signal to detect whether the touch screen is touched and the touched position.

[0004] At present, in response to the increasing demand for touch accuracy, the touch accuracy of mutual capacitance touch screens is improved by increasing the number of transmitting electrodes and receiving electrodes. However, when the number of transmitting electrodes and receiving electrodes increases, the scanning time will be longer, that is, the reporting rate of the touch screen will be reduced and the touch delay will increase. Summary of the invention

[0005] In view of this, the present invention provides a touch panel, a touch display device and a touch control method to solve the problem of low touch response speed when the number of transmitting electrodes and receiving electrodes increases.

[0006] In a first aspect, the present invention provides a touch panel, comprising: a plurality of transmitting electrodes, connected to a touch chip through a plurality of first electrode leads, the touch chip being used to output drive signals to the plurality of transmitting electrodes; a plurality of receiving electrodes, the plurality of receiving electrodes being cross-arranged with the plurality of transmitting electrodes, the plurality of receiving electrodes being connected to the touch chip through a plurality of second electrode leads, the touch chip being used to receive detection signals from the plurality of receiving electrodes; a plurality of first switches and / or a plurality of second switches, each of the plurality of first switches being connected to at least two of the plurality of first electrode leads, and each of the plurality of second switches being connected to at least two of the plurality of second electrode leads; the touch chip being further used to control the first switch to be turned on or off to adjust the number of the drive signals to be processed, and / or to control the second switch to be turned on or off to adjust the number of the detection signals to be processed.

[0007] The touch panel provided by the present invention dynamically adjusts the number of driving signals and / or detection signals processed by the touch chip by setting the first switch and / or the second switch. When the number of transmitting electrodes and / or receiving electrodes is increased, the touch response speed of the touch panel can also be improved, that is, the response speed of the touch panel from the dormant state to the efficient working state is improved, so that the user can wake up the touch panel in the dormant state faster, and improve the user experience. In addition, by short-circuiting at least two transmitting electrodes corresponding to at least two first electrode leads connected to the first switch together through the first switch, and / or, by short-circuiting at least two receiving electrodes corresponding to at least two second electrode leads connected to the second switch together through the second switch, the electrode area with the same potential can be increased, and the signal strength can be improved, so that the touch panel can recognize a touch object at a longer distance, and in the process of a touch object such as a finger or a touch pen approaching the touch panel, the touch action can be recognized faster, and the response speed of the touch panel can be improved. Moreover, the present invention does not adjust the ability of the touch chip to process data, and can improve the response speed of the touch panel at a lower cost.

[0008] Optionally, the first switch is a field effect transistor or a triode, one connection end of the first switch is connected to a first electrode lead, the other connection end of the first switch is connected to another first electrode lead, the control end of the first switch is connected to the touch chip, the touch chip turns on the first switch by outputting a first electrical signal to the control end of the first switch, and the touch chip turns off the first switch by outputting a second electrical signal to the control end of the first switch.

[0009] In this embodiment, a field effect transistor or a triode is used as the first switch, so that at least two first electrode leads can be more conveniently connected together, thereby improving the efficiency of the touch chip controlling the first switch to be turned on or off.

[0010] Optionally, the touch control chip includes a driving chip, the driving chip is configured with a plurality of first switch control interfaces, and the control ends of the plurality of first switches are respectively connected to the plurality of first switch control interfaces.

[0011] Through the above configuration, the driver chip can control the on and off of each first switch respectively, thereby ensuring the touch response speed while taking into account the touch accuracy.

[0012] Optionally, the second switch is a field effect transistor or a triode, one connection end of the second switch is connected to a second electrode lead, the other connection end of the second switch is connected to another second electrode lead, the control end of the second switch is connected to the touch chip, the touch chip turns on the second switch by outputting a third electrical signal to the control end of the second switch, and the touch chip turns off the second switch by outputting a fourth electrical signal to the control end of the second switch.

[0013] In this embodiment, a field effect transistor or a triode is used as the second switch, so that at least two second electrode leads can be more conveniently connected together, thereby improving the efficiency of the touch chip controlling the second switch to be turned on or off.

[0014] Optionally, the touch control chip includes a receiving chip, the receiving chip is configured with a plurality of second switch control interfaces, and the control ends of the plurality of second switches are respectively connected to the plurality of second switch control interfaces.

[0015] Through the above configuration, the receiving chip can control the on and off of each second switch respectively, thereby ensuring the touch response speed while taking into account the touch accuracy.

[0016] Optionally, the first switch and / or the second switch is any one of a field effect transistor, a triode, a switch chip or an analog switch.

[0017] Optionally, the touch control chip is also used to determine whether there is a touch action based on the detection signals of the multiple receiving electrodes, and to control the first switch to be in an on state and / or control the second switch to be in an on state when there is no touch action within a preset time period.

[0018] In this embodiment, when there is no touch action within a preset time period, the first switch is controlled to be in an on state, and / or the second switch is controlled to be in an on state, thereby reducing the number of signals processed by the touch chip and thereby improving the touch response speed. When there is a touch action within a preset time period, the first switch is controlled to be in an off state, and / or the second switch is controlled to be in an off state, thereby improving the accuracy of the touch chip in identifying the touch point position.

[0019] Optionally, the touch panel includes a transmitting electrode layer and a receiving electrode layer which are stacked, the plurality of transmitting electrodes are arranged on the transmitting electrode layer, and the plurality of receiving electrodes are arranged on the receiving electrode layer.

[0020] In a second aspect, the present invention provides a touch display device, comprising the touch panel of the first aspect or any corresponding embodiment thereof.

[0021] In a third aspect, the present invention provides a touch control method, which is applied to the touch panel of the first aspect or any corresponding embodiment thereof, and the method includes: the touch chip determines whether there is a touch action based on the detection signals of multiple receiving electrodes; when there is no touch action within a preset time period, controls the first switch to be in an on state, and / or controls the second switch to be in an on state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of a touch panel;

[0024] Figure 2 is a schematic structural diagram of a touch panel according to an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

[0026] Figure 4 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of a specific structure of a touch panel according to an embodiment of the present invention;

[0028] Figure 6is a schematic diagram of a specific structure of another touch panel according to an embodiment of the present invention;

[0029] Figure 7a is a schematic structural diagram of an emitting electrode layer according to an embodiment of the present invention;

[0030] Figure 7b is a schematic structural diagram of a receiving electrode layer according to an embodiment of the present invention;

[0031] Figure 8a is a schematic diagram of a configuration of a transmitting electrode layer and a receiving electrode layer according to an embodiment of the present invention;

[0032] Figure 8b is a schematic diagram of another arrangement of a transmitting electrode layer and a receiving electrode layer according to an embodiment of the present invention;

[0033] Fig. 9 is a structural schematic diagram of a touch display device according to an embodiment of the present invention;

[0034] Fig.10 is a flow chart of a touch control method according to an embodiment of the present invention.

[0035] Figure numerals: 100, touch panel; 110, transmitting electrode; 111, first electrode lead; 120, receiving electrode; 121, second electrode lead; 130, touch chip; 131, driving chip; 1311, first switch control interface; 132, receiving chip; 1321, second switch control interface; 140, first switch; 150, second switch; 101, transmitting electrode layer; 102, receiving electrode layer; 200, liquid crystal layer; 300, glass cover. DETAILED DESCRIPTION

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

[0037] In order to better understand the touch panel provided by the present invention, firstly, a mutual capacitive touch screen is taken as an example to illustrate the basic structure of the touch panel.

[0038] like Figure 1As shown, the touch panel 100 includes a plurality of transmitting electrodes (TX) 110, a plurality of receiving electrodes (RX) 120 and a touch chip 130. The plurality of transmitting electrodes 110 and the plurality of receiving electrodes 120 are cross-arranged to form a mutual capacitance, that is, the transmitting electrodes and the receiving electrodes at the intersection constitute two levels of the capacitor. The plurality of transmitting electrodes 110 are connected to the touch chip 130 through a plurality of first electrode leads 111, and the plurality of receiving electrodes 120 are connected to the touch chip 130 through a plurality of second electrode leads 121.

[0039] When performing touch detection, the touch chip 130 outputs a driving signal (excitation signal) to multiple transmitting electrodes 110, and multiple receiving electrodes 120 receive the driving signal at the same time. When an object such as a finger or a touch pen approaches or touches the touch panel 100, the mutual capacitance near the touch point changes, thereby causing the detection signal of the receiving electrode 120 to change. The touch chip 130 can use the detection signal to detect whether the touch panel 100 is touched and identify the position of the touch point (i.e., touch coordinates).

[0040] In order to improve the touch accuracy, it is necessary to reduce the size (Pitch) of the touch electrodes (transmitting electrodes 110 and receiving electrodes 120), that is, to increase the number of touch channels, that is, to increase the number of transmitting electrodes 110 and receiving electrodes 120, for example, to increase the number of transmitting electrodes 110 from 80 to more than 100 or to more than 150. At this time, if the touch chip 130 is not adjusted, the scanning time will increase (that is, the reporting rate of the touch panel 100 will decrease), which will lead to an increase in touch delay. For example, assuming that the scanning time of a transmitting electrode 110 is 1 microsecond (us), when the number of transmitting electrodes 110 increases from 100 to 200, the overall scanning time of the touch panel 100 will increase from 100us to 200us. However, adjusting the touch chip 130 and improving the processing power of the touch chip 130 will cause the cost of the touch panel 100 to increase significantly.

[0041] Based on this, the present invention provides a touch panel, which dynamically adjusts the number of signals processed by the touch chip by setting a first switch and / or a second switch, and can take into account the touch response speed and cost of the touch panel while increasing the number of transmitting electrodes and receiving electrodes.

[0042] The touch panel provided by the present invention is described in detail below with reference to the accompanying drawings.

[0043] Exemplarily, the touch panel may be a capacitive touch panel.

[0044] like Figures 2 to 4As shown, the touch panel 100 includes a plurality of transmitting electrodes 110, a plurality of receiving electrodes 120, a touch chip 130, a plurality of first switches 140 and / or a plurality of second switches 150. In other words, the touch panel 100 can be as follows Figure 2 As shown, it includes a plurality of transmitting electrodes 110, a plurality of receiving electrodes 120, a touch chip 130 and a plurality of first switches 140, and can also be as shown in FIG. Figure 3 As shown, the plurality of transmitting electrodes 110, the plurality of receiving electrodes 120, the touch control chip 130 and the plurality of second switches 150 may also be Figure 4 The system shown includes a plurality of transmitting electrodes 110, a plurality of receiving electrodes 120, a touch control chip 130, a plurality of first switches 140 and a plurality of second switches 150. Specifically, the transmitting electrode 110 may also be referred to as a TX channel, and the receiving electrode 120 may also be referred to as a RX channel.

[0045] Among them, the plurality of transmitting electrodes 110 are connected to the touch chip 130 through the plurality of first electrode leads 111, and the touch chip 130 is used to send driving signals to the plurality of transmitting electrodes 110. The plurality of receiving electrodes 120 are connected to the touch chip 130 through the plurality of second electrode leads 121, and the touch chip 130 is also used to receive detection signals from the plurality of receiving electrodes 120. Each of the plurality of first switches 140 is connected to at least two first electrode leads 111 of the plurality of first electrode leads 111. Each of the plurality of second switches 150 is connected to at least two second electrode leads 121 of the plurality of second electrode leads 121. The touch chip 130 is also used to control the first switch 140 to be turned on or off to adjust the number of driving signals processed, and / or the touch chip 130 is also used to control the second switch 150 to be turned on or off to adjust the number of detection signals processed.

[0046] That is, Figure 2 As shown, when the touch panel 100 includes a plurality of first switches 140 but does not include a plurality of second switches 150, the touch chip 130 is used to control the first switches 140 to be turned on or off to adjust the number of driving signals to be processed; Figure 3 As shown, when the touch panel 100 includes a plurality of second switches 150 but does not include a plurality of first switches 140, the touch chip 130 is used to control the second switches 150 to be turned on or off to adjust the number of processed detection signals; Figure 4 As shown, when the touch panel 100 includes both multiple first switches 140 and multiple second switches 150, the touch chip 130 is used to control the first switches 140 to be turned on or off and to control the second switches 150 to be turned on or off to adjust the number of processed drive signals and the number of detection signals.

[0047] Specifically, when the touch chip 130 controls the first switch 140 to be turned on, the first switch 140 short-circuits at least two emitting electrodes 110 corresponding to at least two first electrode leads 111 connected to the first switch 140, which is equivalent to merging at least two emitting electrodes 110 corresponding to at least two first electrode leads 111 connected to the first switch 140 (recorded as the first emitting electrode), and the touch chip 130 can output the same driving signal to the first emitting electrode, that is, the touch chip 130 can process the driving signal as the first emitting electrode, thereby reducing the number of driving signals processed by the touch chip 130. At this time, whether the touch chip 130 adopts a code division multiple access or time division multiple access scanning mode (opening one TX channel at a time or opening multiple TX channels at a time), the scanning speed of the touch can be improved, the reporting rate can be improved, and the delay of the touch response can be reduced. When the touch chip 130 controls the first switch 140 to be turned off, the number of driving signals processed by the touch chip 130 becomes the number of the emitting electrodes 110 again. In addition, by short-circuiting at least two emitting electrodes 110 corresponding to at least two first electrode leads 111 connected to the first switch 140, the electrode area with the same potential can be increased, thereby improving the signal strength, so that the touch panel 100 can identify touch objects at a farther distance. When a touch object such as a finger or a touch pen approaches the touch panel 100, the touch action can be identified more quickly, thereby improving the response speed of the touch panel 100.

[0048] When the touch chip 130 controls the second switch 150 to be turned on, it is equivalent to merging at least two receiving electrodes 120 corresponding to at least two second electrode leads 121 connected to the second switch 150 (recorded as first receiving electrodes), and the detection signals received by the touch chip 130 from the first receiving electrodes are the same, that is, the touch chip 130 can use the first receiving electrode as a receiving electrode to process the detection signal, thereby reducing the number of detection signals processed by the touch chip 130. When the touch chip 130 controls the second switch 150 to be turned off, the number of detection signals processed by the touch chip 130 becomes the number of receiving electrodes 120 again.

[0049] Exemplarily, the first electrode lead 111 and the second electrode lead 121 may be made of conductive materials such as copper wire or silver paste.

[0050] It should be noted that in this embodiment Figures 2 to 4In the embodiment, the first switch 140 is used to connect two adjacent first electrode leads 111, and / or the second switch 150 is used to connect two adjacent second electrode leads 121. However, the present invention does not limit the number and position of the first electrode leads 111 connected by the first switch 140, nor does it limit the number and position of the second electrode leads 121 connected by the second switch 150. For example, three or four first electrode leads 111 can be connected together by the first switch 140, and three or four second electrode leads 121 can be connected together by the second switch 150. For example, two or three first electrode leads 111 spaced apart can be connected by the first switch 140, and two or three second electrode leads 121 spaced apart can be connected by the second switch 150. In addition, the number of first electrode leads 111 connected between the plurality of first switches 140 can be the same or different, and the number of second electrode leads 121 connected between the plurality of second switches 150 can be the same or different. For example, one first switch 140 connects two first electrode leads 111 together, and another first switch 140 connects three first electrode leads 111 together.

[0051] Specifically, the number and position of the first electrode leads 111 connected to the first switch 140 affect the touch accuracy, and the number and position of the second electrode leads 121 connected to the second switch 150 also affect the touch accuracy. The number and position of the first electrode leads 111 connected to the first switch 140 can be configured according to the requirements for touch accuracy, and / or the number and position of the second electrode leads 121 connected to the second switch 150 can be configured.

[0052] The touch panel 100 provided by the present invention dynamically adjusts the number of driving signals and / or detection signals processed by the touch chip 130 by setting the first switch 140 and / or the second switch 150. When the number of transmitting electrodes and / or receiving electrodes is increased, the touch response speed of the touch panel 100 can also be improved, that is, the response speed of the touch panel 100 from a sleep state to an efficient working state is improved, so that the user can wake up the touch panel 100 in a sleep state more quickly, thereby improving the user experience. In addition, by short-circuiting at least two transmitting electrodes 110 corresponding to at least two first electrode leads 111 connected to the first switch 140, and / or by short-circuiting at least two receiving electrodes 120 corresponding to at least two second electrode leads 121 connected to the second switch 150, the electrode area with the same potential can be increased, and the signal strength can be improved, so that the touch panel 100 can identify a touch object at a farther distance, and when a touch object such as a finger or a touch pen approaches the touch panel 100, the touch action can be recognized more quickly, thereby improving the response speed of the touch panel 100. Moreover, the present invention does not adjust the data processing capability of the touch chip 130, and can improve the response speed of the touch panel 100 at a lower cost.

[0053] It should be noted that the first switch 140 and / or the second switch 150 can be a visible and explicit switch device located outside the touch chip 130, or can be a switch device integrated inside the touch chip 130 (that is, the touch chip 130 externally supports the connection between the transmitting electrodes 110 and / or the connection between the receiving electrodes 120).

[0054] Exemplarily, the first switch 140 and / or the second switch 150 may be a field effect transistor (Metal Oxide Semiconductor Field Effect Transistor, MOS), a triode, a switch chip or an analog switch, etc., which are electronic devices that can be controlled on and off by electrical signals, and the present application does not make any limitation thereto. The first switch and the second switch may be the same electronic device that is controlled on and off by electrical signals, or may be different electronic devices that are controlled on and off by electrical signals.

[0055] The structure of the touch panel 100 is further described below in the case where the first switch 140 and the second switch 150 are MOS transistors or triodes.

[0056] like Figure 5As shown, one connection end of the first switch 140 is connected to a first electrode lead 111, the other connection end of the first switch 140 is connected to another first electrode lead 111, the control end of the first switch 140 is connected to the touch chip 130, the touch chip 130 turns on the first switch 140 by outputting a first electrical signal to the control end of the first switch 140, and the touch chip 130 turns off the first switch 140 by outputting a second electrical signal to the control end of the first switch 140.

[0057] Wherein, one first electrode lead 111 and another first electrode lead 111 are any two of the plurality of first electrode leads 111, and the first electrical signal and the second electrical signal are opposite. Exemplarily, the first electrical signal may be a high level signal, and the second electrical signal may be a low level signal.

[0058] Specifically, each of the plurality of emitting electrodes 110 corresponds to an emitting electrode driving network of the touch control chip 130 , and each of the plurality of first electrode leads 111 corresponds to a signal channel.

[0059] For example, Figure 5 Taking the case where the first switch 140 is a MOS transistor as an example, in this example, one connection end of the first switch 140 is a drain (D pole), the other connection end of the first switch 140 is a source (S pole), and the control end of the first switch 140 is a gate (G pole). When the first switch 140 is a triode, one connection end of the first switch 140 is a collector (C pole) of the triode, the other connection end of the first switch 140 is an emitter (E pole) of the triode, and the control end of the first switch 140 is a base (B pole) of the triode.

[0060] In this embodiment, using a MOS tube or a triode as the first switch 140 can more conveniently connect at least two first electrode leads 111 together, thereby improving the efficiency of the touch chip 130 controlling the first switch 140 to be turned on or off.

[0061] Furthermore, if Figure 5 As shown, the touch chip 130 includes a driver chip 131, and the driver chip 131 is configured with multiple first switch control interfaces 1311. The control ends of the multiple first switches 140 are respectively connected to the multiple first switch control interfaces 1311. Through the above configuration, the driver chip 131 can control the on and off of each first switch 140 respectively, ensuring the touch response speed while taking into account the touch accuracy.

[0062] For example, when no touch action is detected for a preset time, a high-level signal can be output to at least one of the multiple first switch control interfaces 1311, so that the first switch 140 is in an on state, and the two transmitting electrodes corresponding to the two adjacent first electrode leads 111 connected to the first switch 140 are short-circuited together, thereby improving the response speed of the touch panel 100.

[0063] Exemplarily, the first switch 140 may be integrated into the driving chip 131 .

[0064] like Figure 6 As shown, one connection end of the second switch 150 is connected to a second electrode lead 121, the other connection end of the second switch 150 is connected to another second electrode lead, the control end of the second switch 150 is connected to the touch chip 130, the touch chip 130 turns on the second switch 150 by outputting a third electrical signal to the control end of the second switch 150, and the touch chip 130 turns off the second switch 150 by outputting a fourth electrical signal to the control end of the second switch 150.

[0065] Wherein, one second electrode lead 121 and another second electrode lead 121 are any two of the plurality of second electrode leads 121, and the third electrical signal is opposite to the fourth electrical signal. Exemplarily, the third electrical signal may be a high level signal, and the fourth electrical signal may be a low level signal.

[0066] Specifically, each receiving electrode 120 among the plurality of receiving electrodes 120 corresponds to a receiving electrode receiving network of the touch control chip 130 , and each second electrode lead 121 among the plurality of second electrode leads 121 corresponds to a signal channel.

[0067] For example, Figure 6 Taking the second switch 150 as a MOS transistor as an example, in this example, one connection end of the second switch 150 is the drain (D pole), the other connection end of the second switch 150 is the source (S pole), and the control end of the second switch 150 is the gate (G pole). When the second switch 150 is a triode, one connection end of the second switch 150 is the collector (C pole) of the triode, the other connection end of the second switch 150 is the emitter (E pole) of the triode, and the control end of the second switch 150 is the base (B pole) of the triode.

[0068] In this embodiment, using a MOS tube or a triode as the second switch 150 can more conveniently connect at least two second electrode leads 121 together, thereby improving the efficiency of the touch chip 130 controlling the second switch 150 to be turned on or off.

[0069] Furthermore, if Figure 6As shown, the touch chip 130 includes a receiving chip 132, and the receiving chip 132 is configured with multiple second switch control interfaces 1321. The control ends of the multiple second switches 150 are respectively connected to the multiple second switch control interfaces 1321. Through the above settings, the receiving chip 132 can control the on and off of each second switch 150 respectively, ensuring the touch response speed while taking into account the touch accuracy.

[0070] Exemplarily, the second switch 150 may be integrated into the receiving chip 132 .

[0071] In some optional embodiments, the touch chip 130 is further used to determine whether there is a touch action according to the detection signals of the plurality of receiving electrodes 120, and to control the first switch 140 to be in an on state and / or the second switch 150 to be in an on state when there is no touch action within a preset time length. The preset time length is a preset value, for example, the preset time length may be 20 seconds (s), 30s or 60s, etc. Specifically, the touch chip 130 is further used to control the first switch 140 to be in an off state and / or the second switch 150 to be in an off state when there is a touch action within the preset time length.

[0072] Exemplarily, when the detection signal is different from the preset detection signal, it can be determined that there is a touch action, and when the detection signal at the current moment is different from the detection signal at the previous moment, it can be determined that there is a touch action at the current moment. The time interval between the current moment and the previous moment is the detection cycle of the touch panel 100, and the duration of the detection cycle can be a preset duration.

[0073] In this embodiment, when there is no touch action within a preset time period, the first switch 140 is controlled to be in an on state, and / or the second switch 150 is controlled to be in an on state, thereby reducing the number of signals processed by the touch chip and thereby improving the touch response speed. When there is a touch action within a preset time period, the first switch 140 is controlled to be in an off state, and / or the second switch 150 is controlled to be in an off state, thereby ensuring the accuracy of the touch chip 130 in identifying the touch point position.

[0074] In some optional embodiments, such as Figure 7a and Figure 7b As shown, the touch panel 100 includes a stacked transmitting electrode layer 101 and a receiving electrode layer 102 , a plurality of transmitting electrodes 110 can be disposed on the transmitting electrode layer 101 by etching, and a plurality of receiving electrodes 120 can be disposed on the receiving electrode layer 102 by etching.

[0075] For example, Figure 8a As shown, the transmitting electrode layer 101 is arranged on the receiving electrode layer 102, or as shown Figure 8bAs shown, the receiving electrode layer 102 is disposed on the transmitting electrode layer 101. Specifically, there is an insulating layer between the transmitting electrode layer 101 and the receiving electrode layer 102, so that mutual capacitance exists between the two conductive layers (the transmitting electrode layer 101 and the receiving electrode layer 102).

[0076] In this embodiment, there is no limitation on the shapes of the transmitting electrode 110 and the receiving electrode 120. For example, the transmitting electrode 110 may be as follows: Figure 7a As shown, it is in a diamond or triangle shape, or it can be a rectangle or other shapes. The receiving electrode 120 can be as follows Figure 7b It is shown in a diamond or triangle shape, but can also be a rectangle or other shapes.

[0077] The present invention further provides a touch display device, which includes the touch panel described in any of the above embodiments.

[0078] Exemplarily, the touch display device provided by the present invention may include but is not limited to smart interactive tablets, mobile phones, smart watches, tablet computers, laptops, desktop displays, televisions, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment and touch interactive terminals, etc.

[0079] In some optional embodiments, such as Fig. 9 As shown, the touch display device 1000 further includes a liquid crystal layer 200 and a glass cover plate 300, and the liquid crystal layer 200, the touch panel 100 and the glass cover plate 300 are stacked from bottom to top. Specifically, the liquid crystal layer 200, the touch panel 100 and the glass cover plate 300 are connected by bonding adhesive. Exemplarily, the liquid crystal layer 200 can be a liquid crystal display (LCD).

[0080] According to an embodiment of the present invention, a touch control method embodiment is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in the above-mentioned touch panel, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0081] In this embodiment, a touch control method is also provided, which can be used for the above-mentioned touch panel or touch display device. Fig.10 is a flow chart of a touch control method according to an embodiment of the present invention. Fig.10 As shown, the method comprises the following steps:

[0082] Step S1001: The touch chip determines whether there is a touch action according to detection signals of a plurality of receiving electrodes.

[0083] Exemplarily, when the detection signal is different from the preset detection signal, it can be determined that there is a touch action, and when the detection signal at the current moment is different from the detection signal at the previous moment, it can be determined that there is a touch action at the current moment. The time interval between the current moment and the previous moment is the detection cycle of the touch panel.

[0084] Step S1002: when there is no touch action within a preset time period, control the first switch to be in an on state, and / or control the second switch to be in an on state.

[0085] The preset duration is a preset value, for example, the preset duration may be 20s, 30s or 60s, etc. Specifically, the touch chip is also used to control the first switch to be in an off state and / or control the second switch to be in an off state when there is a touch action within the preset duration.

[0086] The touch control method provided in this embodiment can be applied to the initial touch operation of a touch device. For example, when there is no touch action within a preset time period, the first switch is controlled to be in an on state, and / or the second switch is controlled to be in an on state, so that at least two transmitting electrodes corresponding to at least two first electrode leads connected to the first switch are short-circuited together, and / or at least two receiving electrodes corresponding to at least two second electrode leads connected to the second switch are short-circuited together, so that the touch panel can quickly respond to the user's touch operation. After the touch action occurs, the first switch is controlled to be in an off state, and / or the second switch is controlled to be in an off state, so that the number of transmitting electrodes and receiving electrodes is increased, the coordinates of the touch point can be more accurately identified, and the user experience is improved.

[0087] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0089] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0090] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. A touch panel, characterized in that: The touch panel comprises: A plurality of emitting electrodes are connected to a touch control chip through a plurality of first electrode leads, and the touch control chip is used to output driving signals to the plurality of emitting electrodes; a plurality of receiving electrodes, the plurality of receiving electrodes being arranged crosswise with the plurality of transmitting electrodes, the plurality of receiving electrodes being connected to the touch control chip through a plurality of second electrode leads, and the touch chip being used to receive detection signals from the plurality of receiving electrodes; A plurality of first switches and / or a plurality of second switches, each of the plurality of first switches being connected to at least two first electrode leads of the plurality of first electrode leads, and each of the plurality of second switches being connected to at least two second electrode leads of the plurality of second electrode leads; The touch control chip is further used to control the first switch to be turned on or off to adjust the number of the processed driving signals, and / or is further used to control the second switch to be turned on or off to adjust the number of the processed detection signals.

2. The touch panel according to claim 1, characterized in that: The first switch is a field effect transistor or a triode, one connection end of the first switch is connected to a first electrode lead, the other connection end of the first switch is connected to another first electrode lead, the control end of the first switch is connected to the touch chip, the touch chip turns on the first switch by outputting a first electrical signal to the control end of the first switch, and the touch chip turns off the first switch by outputting a second electrical signal to the control end of the first switch.

3. The touch panel according to claim 2, characterized in that: The touch control chip includes a driving chip, the driving chip is configured with a plurality of first switch control interfaces, and the control ends of the plurality of first switches are respectively connected to the plurality of first switch control interfaces.

4. The touch panel according to claim 1, characterized in that: The second switch is a field effect transistor or a triode, one connection end of the second switch is connected to a second electrode lead, the other connection end of the second switch is connected to another second electrode lead, the control end of the second switch is connected to the touch chip, the touch chip turns on the second switch by outputting a third electrical signal to the control end of the second switch, and the touch chip turns off the second switch by outputting a fourth electrical signal to the control end of the second switch.

5. The touch panel according to claim 4, characterized in that: The touch control chip includes a receiving chip, the receiving chip is configured with a plurality of second switch control interfaces, and the control ends of the plurality of second switches are respectively connected to the plurality of second switch control interfaces.

6. The touch panel according to claim 1, characterized in that: The first switch and / or the second switch is any one of a field effect transistor, a triode, a switch chip or an analog switch.

7. The touch panel according to any one of claims 1 to 6, characterized in that: The touch control chip is also used to determine whether there is a touch action based on the detection signals of the multiple receiving electrodes, and to control the first switch to be in an on state and / or control the second switch to be in an on state when there is no touch action within a preset time period.

8. The touch panel according to any one of claims 1 to 6, characterized in that: The touch panel includes a transmitting electrode layer and a receiving electrode layer which are stacked, the plurality of transmitting electrodes are arranged on the transmitting electrode layer, and the plurality of receiving electrodes are arranged on the receiving electrode layer.

9. A touch display device, characterized in that: The invention comprises a touch panel as claimed in any one of claims 1 to 8.

10. A touch control method, characterized in that: Applied to the touch panel according to any one of claims 1 to 8, the method comprises: The touch chip determines whether there is a touch action based on the detection signals of the multiple receiving electrodes; When there is no touch action within a preset time period, the first switch is controlled to be in an on state, and / or the second switch is controlled to be in an on state.

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