CN116540890A - Touch device, touch position detection method and storage medium - Google Patents

Abstract

Embodiments provided herein belong to touch technologies, and provide a touch device, a touch position detection method and a storage medium. The touch device includes a display screen, a touch assembly, and a processor configured to: controlling the touch sensing driving module to scan the N driving channels one by one so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment; collecting a first amplitude value of an induction signal output by an induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment; the non-driving channel outputs excitation signals to each sensing channel at the target reference moment; according to the difference between the first amplitude value and the second amplitude value corresponding to each sensing channel, a touch detection result is obtained; and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position. The accuracy of touch position detection is improved.

Description

Touch device, touch position detection method and storage medium

Technical Field

The embodiment of the application relates to a touch technology. And more particularly, to a touch device, a touch position detection method, and a storage medium.

Background

The touch device (such as a smart television with a touch interaction function, a smart interaction tablet and the like) can detect the touch position of a user on the device and display a corresponding interface according to the touch position of the user. The touch device may include a touch assembly, which may include a driving channel, and an induction channel. When the touch position detection is performed, the touch device may scan the driving channels one by one, and input a driving signal to the scanned driving channels. The driving channel receiving the driving signal can input an excitation signal to each sensing channel, and the sensing channels can output sensing signals. The amplitude of the sensing signal corresponding to the position where the user does not touch is different from the amplitude of the sensing signal corresponding to the user touch position. Therefore, the touch device can determine the touch position of the user according to the amplitude change of the sensing signal.

However, interference signals in the environment where the touch device is located, such as electrostatic interference, interference of fluorescent light irradiation, etc., all cause the amplitude of the sensing signal to change when there is no user touch, so that the accuracy of detecting the touch position of the touch device is poor.

Disclosure of Invention

The exemplary embodiments of the present application provide a touch device, a touch position detection method, and a storage medium, which can improve the accuracy of touch position detection.

In a first aspect, the present application provides a touch device, including:

the display screen is used for displaying images;

a touch assembly, comprising: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; n and M are integers greater than or equal to 2;

a processor coupled to the display screen and the touch sensitive drive module, the processor configured to:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment;

collecting a first amplitude value of an induction signal output by the induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment; the target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; outputting excitation signals to the induction channels by the driving channels at the target reference moment;

Acquiring a touch detection result according to the difference between the first amplitude corresponding to each sensing channel and the second amplitude; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

Optionally, the processor is configured to:

the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration for any driving channel is equal to a target period corresponding to the interference signal, and the processor is configured to:

obtaining K difference values corresponding to each induction channel in the target scanning time length, wherein the difference values are differences between a first amplitude value and the second amplitude value;

and acquiring the touch detection result according to the average value of the K difference values.

Optionally, the processor is configured to:

acquiring a target period corresponding to an interference signal in the environment where the touch equipment is located;

and acquiring the period of the excitation signal and the target scanning duration according to the target period corresponding to the interference signal.

Optionally, the processor is configured to:

receiving an initial frequency of at least one interference signal in an environment where the touch equipment is located;

and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one interference signal.

Optionally, the processor is configured to:

determining at least one target interference signal from the at least one interference signal according to an initial frequency of each interference signal;

and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one target interference signal.

Optionally, the touch control assembly further includes: an amplifying module;

the amplifying module is used for amplifying the initial sensing signal output by the sensing channel and outputting an amplified sensing signal;

the processor is configured to:

acquiring a first amplitude value of the amplified induction signal;

and obtaining a touch detection result according to the difference between the first amplitude value of each amplified sensing signal and the second amplitude value of the sensing signal output by each sensing channel.

In a second aspect, the present application provides a touch device, including:

The display screen is used for displaying images;

a touch assembly, comprising: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; n and M are integers greater than or equal to 2;

a processor coupled to the display screen and the touch sensitive drive module, the processor configured to:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment; the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration of any driving channel is equal to the target period corresponding to the interference signal;

obtaining K target amplitude values of the induction signals output by each induction channel in the target scanning time length; the target amplitude is the result of superposition of the excitation signal and the interference signal;

acquiring a touch detection result according to the average value of the K target amplitudes; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

And when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

In a third aspect, the present application provides a touch location detection method, where a touch device includes a touch component, where the touch component includes: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N is an integer greater than or equal to 2; the M is an integer greater than or equal to 2, the method comprising:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment;

collecting a first amplitude value of an induction signal output by the induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment; the target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; outputting excitation signals to the induction channels by the driving channels at the target reference moment;

Acquiring a touch detection result according to the difference between the first amplitude corresponding to each sensing channel and the second amplitude; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

In a fourth aspect, the present application provides a touch location detection method, where a touch device includes a touch component, where the touch component includes: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N and M are integers greater than or equal to 2, and the method comprises the following steps:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment; the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration of any driving channel is equal to the target period corresponding to the interference signal;

Obtaining K target amplitude values of the induction signals output by each induction channel in the target scanning time length; the target amplitude is the result of superposition of the excitation signal and the interference signal;

acquiring a touch detection result according to the average value of the K target amplitudes; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

In a fifth aspect, the present application provides a touch position detection apparatus, where a touch device includes a touch component, the touch component includes: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N is an integer greater than or equal to 2; the M is an integer greater than or equal to 2, and the device comprises:

the control module is used for controlling the touch sensing driving module to scan the N driving channels one by one so that each driving channel outputs excitation signals to each sensing channel at each scanning moment;

The acquisition module is used for acquiring a first amplitude value of the induction signal output by the induction channel corresponding to the first scanning moment and a second amplitude value of the induction signal output by each induction channel corresponding to the target reference moment; the target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; outputting excitation signals to the induction channels by the driving channels at the target reference moment;

the processing module is used for acquiring a touch detection result according to the difference between the first amplitude corresponding to each sensing channel and the second amplitude; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and the response module is used for responding to the touch operation aiming at the target position when the touch detection result is used for representing that the target position has touch.

In a sixth aspect, the present application provides a touch position detection apparatus, where a touch device includes a touch component, where the touch component includes: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N and M are integers greater than or equal to 2, the apparatus comprising:

The control module is used for controlling the touch sensing driving module to scan the N driving channels one by one so that each driving channel outputs excitation signals to each sensing channel at each scanning moment; the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration of any driving channel is equal to the target period corresponding to the interference signal;

the acquisition module is used for acquiring K target amplitude values of the induction signals output by each induction channel in the target scanning time length; the target amplitude is the result of superposition of the excitation signal and the interference signal;

the processing module is used for acquiring a touch detection result according to the average value of the K target amplitudes; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and the response module is used for responding to the touch operation aiming at the target position when the touch detection result is used for representing that the target position has touch.

In a seventh aspect, the present application provides a computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement the method of the first or second aspect.

In an eighth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the method of the first or second aspect.

According to the touch equipment, the touch position detection method and the storage medium, the amplitude of the induction signals output by the induction channels is used as the second amplitude by taking the target reference moment of the excitation signals output by the non-driving channels to the induction channels, so that fluctuation of the amplitude of the induction signals caused by the interference signals is represented. Therefore, the first amplitude of the sensing signal output by the sensing channel is different from the second amplitude, a touch detection result is determined, the influence of the interference signal on the amplitude of the sensing signal is eliminated, the amplitude of the sensing signal received by the touch equipment is changed only when a user touches the touch equipment, and the accuracy of touch position detection is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the implementation in the related art, a brief description will be given below of the drawings required for the embodiments or the related art descriptions, and it is apparent that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings for those of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a touch device;

FIG. 2 is a schematic diagram of a touch panel;

FIG. 3 is a schematic diagram of a sensing signal output from a sensing channel;

FIG. 4 is a schematic diagram of another sense signal output by a sense channel;

fig. 5 is a flow chart of a touch position detection method provided in the present application;

FIG. 6 is a schematic diagram of superposition of an induced signal and an interference signal;

FIG. 7 is a flowchart of a method for obtaining a period of an excitation signal and a target scan duration provided in the present application;

fig. 8 is a schematic structural diagram of another touch device provided in the present application;

FIG. 9 is a schematic diagram of another superposition of an induced signal and an interference signal;

fig. 10 is a schematic structural diagram of a touch position detecting device provided in the present application;

fig. 11 is a schematic structural diagram of another touch position detecting device provided in the present application.

Detailed Description

For purposes of clarity, embodiments and advantages of the present application, the following description will make clear and complete the exemplary embodiments of the present application, with reference to the accompanying drawings in the exemplary embodiments of the present application, it being apparent that the exemplary embodiments described are only some, but not all, of the examples of the present application.

It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

Furthermore, the terms "comprise" and "have," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

Fig. 1 is a schematic structural diagram of a touch device. As shown in fig. 1, the touch device may include a processor, a touch assembly, and a display screen. The touch assembly may include a touch sensing driving module and a Touch Panel (TP). When a user touches the touch panel, the processor can acquire relevant information of the touch position through the touch sensing driving module, and determine the touch position of the user according to the relevant information of the touch position. And the processor can respond to the operation corresponding to the touch position. Through the above process, touch interaction can be realized.

The touch device may be, for example, a touch device such as a mobile phone, a tablet computer, a desktop computer, a notebook computer, a camera, a smart watch, a smart television, or a smart interactive tablet. It should be understood that the present application is not limited in the manner in which the user touches the touch device. For example, a user may interact with the touch device by a finger, or a stylus, or the like.

In some embodiments, a display screen is used to display the image. The display screen may include a display panel, for example. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrix organic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, the touch device may include 1 or more display screens.

In some embodiments, the processor may be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processing component may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), a micro control unit (Microcontroller Unit, MCU), and a modem etc. The CPU may process, among other things, an operating system, user interfaces, application programs, and the like. The GPU may be used to take care of rendering and drawing of content that the display screen is required to display. The modem may be used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processing component and may be implemented solely by a single chip.

In some embodiments, the touch sensing driving module may be implemented by an integrated circuit (Integrated Circuit, IC) chip, for example.

In some embodiments, the touch panel may include a driving electrode layer and a sensing electrode layer. Fig. 2 is a schematic structural diagram of a touch panel. As shown in fig. 2, the driving electrode layer of the touch panel may include N driving channels, and the sensing electrode layer may include M sensing channels. Wherein N and M are integers greater than or equal to 2. Alternatively, the number of driving channels may be the same as or different from the number of sensing channels, which is not limited in this application.

Alternatively, as shown in fig. 1, the touch sensing driving module may include a driving array and a receiving array. Wherein the drive array is connectable to the drive channels and the receive array is connectable to the sense channels.

In some embodiments, the drive channel and the sense channel may be made of transparent conductive material. The transparent conductor material may be, for example, an Indium Tin Oxide (ITO) material.

It should be understood that fig. 1 is merely an exemplary structure of a touch device, and the present application does not limit whether the touch device further includes other structures. Further, it should be understood that fig. 2 is merely an exemplary illustration of components related to the present application in a touch panel, and the present application is not limited to whether the touch panel further includes other components.

In the related touch position detection method, the processor may control the touch sensing driving module to scan the N driving channels one by one. For the scanned driving channel, the processor can input a driving voltage signal to the driving channel through the touch sensing driving module. For capacitive touch devices, a coupling capacitance may be provided between the drive channel and the sense channel. After the driving channels receive the voltage input by the touch sensing driving module, the driving channels can charge each sensing channel through the coupling capacitor, and then the sensing channels can output sensing signals.

In the case where the touch device is located in an environment without an interference signal, fig. 3 is an exemplary diagram of an induction signal output by an induction channel. As shown in fig. 3, when a user touches the touch device, the magnitude (or signal strength) of the sensing signal output by the sensing channel at the touch position is smaller than the magnitude of the sensing signal output by the sensing channel at the touch position when no touch is performed. That is, the processor may determine the touch location by sensing a change in the amplitude of the signal.

It should be understood that fig. 3 is merely an exemplary illustration taking the magnitude of the sensing signal output by the sensing channel of the touch location as being smaller than the magnitude of the sensing signal output by the sensing channel of the touch location in the absence of a touch. When no interference exists, the amplitude of the sensing signal output by the sensing channel at the touch position is changed relative to the amplitude of the sensing signal output by the sensing channel at the touch position when no touch exists, and the method is not limited. For example, in some embodiments, the magnitude of the sense signal output by the sense channel of the touch location may be greater than the magnitude of the sense signal output by the sense channel of the touch location in the absence of a touch.

However, when there is an interference signal in the environment where the touch device is located, the interference signal may cause the amplitude of the sensing signal to change when there is no user touch, so that the accuracy of detecting the touch position of the touch device is poor. The interference signals come from electrostatic interference, fluorescent lamp irradiation interference and the like in the environment where the touch equipment is located. In some embodiments, signal interference may be generated when components such as a display screen of the touch device work, which may be regarded as interference signals existing in the environment where the touch device is located.

Fig. 4 is a schematic diagram of a sensing signal output by another sensing channel. As shown in fig. 4, when no interference signal exists in the environment where the touch device is located, if no user touches the touch device, the amplitude of the sensing signal may remain stable. However, if there are interference signals in the environment where the touch device is located, for example, interference 1 and interference 2 shown in fig. 4, even if no user touches the touch device, the sensing signal may be affected by the interference signal and superimposed with the interference signal, so that the amplitude of the sensing signal received by the processor changes, and further the processor misjudges the touch position, so that abnormal operations such as jumping, wire breakage, and the like occur in the touch device.

The problem of poor accuracy of the existing touch position detection method is considered to be that the amplitude of the sensing signal received by the processor is abnormal due to the interference signal in the environment where the touch device is located, so that the method for reducing the influence of the interference signal on the processor to judge the touch position is provided. The influence of the interference signal on the amplitude of the sensing signal received by the processor is reduced, so that the amplitude of the sensing signal received by the processor only changes when a user touches the touch equipment, and the accuracy of touch position detection is improved.

The execution body of the method can be a touch device or a processor of the touch device. The following describes the technical solution of the present application in detail with reference to specific embodiments by taking the execution body of the above method as an example of a touch device. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 5 is a flow chart of a touch position detection method provided in the present application. As shown in fig. 5, the method may include the steps of:

S101, controlling the touch sensing driving module to scan N driving channels one by one, so that each driving channel outputs excitation signals to each sensing channel at each scanning moment.

In some embodiments, the touch device may control the touch sensing driving module to scan the N driving channels one by one according to a preset frequency. The preset frequency may be stored in the touch device in advance by the user, for example. Or, the preset frequency may be any frequency determined under the user line and stored in the touch device in advance, which can meet the requirement of the touch sensing driving module for detecting the touch position.

Optionally, the touch device may control the touch sensing driving module to input a voltage of a preset magnitude to the scanned driving channel. Alternatively, the magnitude of the voltage is not limited in the present application.

S102, collecting a first amplitude value of an induction signal output by an induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment.

The target reference time is any time between a first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time. The non-drive channels output excitation signals to the sense channels at the target reference time. It should be appreciated that the target scan instant corresponding to the first scan instant may be located after the first scan instant. In some embodiments, the target scan time corresponding to the first scan time may also be located before the first scan time.

Optionally, when the touch device controls the touch sensing driving module to scan the driving channels, the scanned driving channels can send excitation signals to each sensing channel through the coupling capacitance between the driving channels and the sensing channels, so that the sensing channels can output sensing signals. In some embodiments, as described above, the touch sensing driving module may include a receiving array, and in this implementation, the touch device may receive the first amplitude and the second amplitude of the sensing information output by each sensing channel through the receiving array, for example.

S103, according to the difference between the first amplitude value and the second amplitude value corresponding to each sensing channel, a touch detection result is obtained.

The touch detection result can be used for indicating that no touch exists or that touch exists at the target position. Optionally, a preset amplitude value may be stored in the touch device in advance, and when the preset amplitude value is the same as the first amplitude value and the second amplitude value, the touch device may determine that the touch detection result is used to indicate that no touch exists. Then, optionally, the touch device may continue to perform steps S101-S103 to perform touch position detection. If the touch device determines that the preset amplitude is different from the above difference between the first amplitude and the second amplitude, it may be determined that the touch detection result is used to indicate that the target position has touch. Then, the touch device may perform step S104 in response to the touch operation for the target location.

Wherein, the preset amplitude, as used herein, is different from the above-mentioned "difference between the first amplitude and the second amplitude", and may mean that the preset amplitude is larger than the "difference between the first amplitude and the second amplitude", or that the preset amplitude is smaller than the "difference between the first amplitude and the second amplitude".

And S104, when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

It should be understood that, the specific implementation manner of the touch device in response to the touch operation for the target location is not limited in this application. Optionally, the target positions on the touch device are different, and the implementation manner of the touch device in response to the touch operation may be different or the same. For example, the response to the touch operation for the target position may, for example, control the display screen for the touch device to perform corresponding image display, or change the volume of the touch device to a corresponding volume, or perform operations such as shutdown and restart.

In this embodiment, by taking the amplitude of the sensing signal output by each sensing channel as the second amplitude at the target reference time when the driving channel is not outputting the excitation signal to each sensing channel, the fluctuation of the sensing signal amplitude caused by the interference signal is represented. Therefore, the first amplitude of the sensing signal output by the sensing channel is different from the second amplitude, a touch detection result is determined, the influence of the interference signal on the amplitude of the sensing signal is eliminated, the amplitude of the sensing signal received by the touch equipment is changed only when a user touches the touch equipment, and the accuracy of touch position detection is improved.

The following describes in detail how the touch device controls the touch sensing driving module to scan N driving channels one by one:

as a possible implementation manner, the target period corresponding to the interference signal in the environment where the touch device is located may be K times the period of the excitation signal. Wherein K is an integer greater than or equal to 2. The target scan duration for any one drive channel may be equal to the target period corresponding to the interfering signal.

In this implementation manner, each sensing channel may output K first magnitudes and a second magnitude corresponding to each first magnitude in each of the above-mentioned target scan periods. Optionally, the touch device may obtain K differences corresponding to each sensing channel in the target scanning duration. The difference is the difference between the first amplitude and the corresponding second amplitude. Then, the touch device may obtain a touch detection result according to an average value of the K differences. By the method, errors of the induction signals caused by the interference signals when the frequencies of the interference signals are high can be further eliminated, and therefore accuracy of touch position detection is further improved.

Fig. 6 is a schematic diagram illustrating superposition of an induction signal and an interference signal. As shown in fig. 6, by determining the touch detection result by combining the period of the excitation signal, the target scanning duration and the difference between the first amplitude and the second amplitude of the sensing signal, the amplitude interference on the sensing signal caused by the short period interference signal can be further eliminated, and the accuracy of determining the touch position is further improved.

In this embodiment, by making the target scanning period equal to (1/K) times the target period corresponding to the interference signal in the environment where the touch device is located, and making the target scanning period for any driving channel equal to the target period corresponding to the interference signal, the output sensing signal can eliminate the fluctuation of the first amplitude of the sensing signal caused by the short period of the interference signal. And acquiring a touch detection result through the difference between the first amplitude and the second amplitude of the sensing signal output by each sensing channel, so that fluctuation of the amplitude of the sensing signal caused by the long-period interference signal can be eliminated. Therefore, the method can simultaneously eliminate the interference of the long-period interference signal on the touch position detection and the interference of the short-period interference signal on the touch position detection, and further improve the accuracy of the touch position detection.

In this implementation manner, optionally, the period of the excitation signal and the target scan duration for any driving channel may be calibrated by the user through an offline experiment and stored in the touch device in advance.

Or, the touch device may further automatically determine the period of the excitation signal according to the interference signal in the environment where the touch device is located, and target scan duration for any driving channel, so as to improve accuracy of the period of the excitation signal and the target scan duration. As a possible implementation manner, fig. 7 is a schematic flow chart of a method for acquiring a period of an excitation signal and a target scanning duration provided in the present application. As shown in fig. 7, the method may include the steps of:

S201, acquiring a target period corresponding to an interference signal in an environment where the touch equipment is located.

As a first possible implementation, the target period may be stored in the touch device in advance for the user, for example. The user can analyze the frequencies of a plurality of interference signals collected from the environment where the touch equipment is located in an off-line mode, determine target periods corresponding to the frequencies of the plurality of interference signals and store the target periods in the touch equipment in advance. That is, in this implementation manner, the touch device may acquire, from the data stored in the touch device, a target period corresponding to the interference signal in the environment where the touch device is located.

As a second possible implementation manner, the touch device may further receive an initial frequency of at least one interference signal in an environment where the touch device is located, and then obtain a target period corresponding to the interference signal in the environment where the touch device is located according to the initial frequency of the at least one interference signal.

In this implementation manner, optionally, a signal acquisition device for acquiring an interference signal in an environment where the touch device is located may be provided in the touch device, for example. The touch equipment can receive at least one interference signal in the environment where the touch equipment is located, which is acquired by the signal acquisition device, and acquire the initial frequency of the at least one interference signal.

After the touch device obtains the initial frequency of the at least one interference signal, the touch device may, for example, input the initial frequency of the at least one interference signal into a pre-trained neural network model to obtain the target period. The pre-trained neural network model may output a target period corresponding to at least one interference signal based on a frequency of the at least one interference signal. It should be understood that the type of the neural network model and the training method for training the neural network model are not limited in this application.

Optionally, after the initial frequency of the at least one interference signal is obtained, the touch device may directly use all received interference signals as target interference signals that may cause interference to the sensing signal output by the sensing channel, and then obtain a target period corresponding to the interference signals in the environment where the touch device is located according to the initial frequency of all received interference signals.

Or after the touch device obtains the initial frequency of the at least one interference signal, at least one target interference signal can be determined from the at least one interference signal according to the initial frequency of each interference signal, and then a target period corresponding to the interference signal in the environment where the touch device is located can be obtained according to the initial frequency of the at least one target interference signal. By the method, the touch equipment can determine the target interference signal which causes interference to the induction signal output by the induction channel from all the interference signals, and then determine the target period according to the initial frequency of the target interference signal, so that the accuracy and the efficiency of determining the target period are improved.

It should be understood that, for example, the specific implementation manner of obtaining the target period by the touch device according to the initial frequency of the at least one target interference signal may refer to the method for obtaining the target period according to the initial frequency of the at least one interference signal described in the foregoing embodiment, which is not described herein.

As a third possible implementation manner, the touch device may also receive, for example, information that is input by a user and that is about the current environment in which the touch device is located. Then, the touch device can determine a target period corresponding to the interference signal according to the information of the current environment of the touch device. Optionally, the information of the current environment of the touch device may be, for example, an identifier of the current environment of the touch device. Then, the touch device can determine a target period corresponding to the interference signal in the environment where the touch device is located according to the identifier of the current environment where the touch device is located and the mapping relation between the environment identifier and the period.

S202, acquiring the period of the excitation signal and the target scanning duration according to the target period corresponding to the interference signal.

The target period corresponding to the interference signal may be K times the period of the excitation signal. Alternatively, the K may be pre-stored in the touch device. The target scanning duration for any driving channel may be equal to the target period corresponding to the interference signal.

Further, as a possible implementation manner, the touch control assembly may further include an amplifying module configured to amplify the initial sensing signal output by the sensing channel and output the amplified sensing signal. The touch control device can acquire the first amplitude of the amplified sensing signal, and then acquire a touch control detection result according to the difference between the first amplitude of the amplified sensing signal and the second amplitude of the sensing signal output by each sensing channel.

It should be understood that the specific implementation of the amplifying module is not limited in this application. Taking the amplifying module as an operational amplifier circuit as an example, fig. 8 is a schematic structural diagram of another touch device provided in the present application. As shown in fig. 8, the MCU of the touch device may receive the first amplitude and the second amplitude of the output of the operational amplifier circuit.

Through the amplification module, the micro signal can be amplified, that is, when the intensity of the sensing signal is smaller, the sensing signal can be amplified through the amplification module, so that the sensing signal can be acquired by the touch equipment, the accuracy of acquiring the sensing signal by the touch equipment is improved, and the accuracy of detecting the touch position of the touch equipment based on the amplitude of the sensing signal is further improved.

In some embodiments, the touch device may further eliminate interference of the sensing signal by the interference signal with a higher frequency (or a shorter period) through the following steps, so as to improve accuracy of touch position detection. Optionally, as described above, the electronic device may control the touch sensing driving module to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning time. The target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, and K is an integer greater than or equal to 2. The target scan duration for any one drive channel may be equal to the target period corresponding to the interfering signal.

Then, the touch device may acquire K target magnitudes of the sensing signal output by each sensing channel within the target scan duration. The target amplitude is the result of superposition of the excitation signal and the interference signal.

Then, the electronic device may obtain, according to an average value of the K target magnitudes, a touch detection result for indicating that no touch exists or that a touch exists at the target position. The specific implementation manner may refer to the method described in the foregoing embodiment, and will not be described herein.

When the touch detection result is used for representing that the target position has touch, the electronic device can respond to touch operation aiming at the target position. The specific implementation manner may refer to the method described in the foregoing embodiment, and will not be described herein.

For example, taking the example that the target period corresponding to the interference signal is 2 times the target scanning period, fig. 9 is a schematic diagram of superposition of another sensing signal and the interference signal. As shown in fig. 9, A, B, C, D is a sensing signal and the curve is an interference signal. Let the interference signal amplitude be n and the single pulse signal amplitude be m. The first amplitude of the sensing signal at the point a is a=m+n, the signal sampling value at the point B is b=m-n, and when the target scanning duration is reached, two periods of sensing signals (also referred to as double pulse signals) can be sent out from the driving channel, and the amplitude of the two periods of averaged sensing signals is equal to (a+b)/2= (m+n+m-n)/2=m. Then, the touch device may obtain a touch detection result according to the m and the difference between each first amplitude and the second amplitude of the sensing signal output by each sensing channel.

Fig. 10 is a schematic structural diagram of a touch position detecting device provided in the present application. As shown in fig. 10, the apparatus 30 may include: a control module 31, an acquisition module 32, a processing module 33, and a response module 34. Wherein, the liquid crystal display device comprises a liquid crystal display device,

The control module 31 is configured to control the touch sensing driving module to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning time.

The acquisition module 32 is configured to acquire a first amplitude of the sensing signal output by the sensing channel corresponding to the first scanning moment, and a second amplitude of the sensing signal output by each sensing channel corresponding to the target reference moment. The target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; and outputting excitation signals to the induction channels by the driving channels at the target reference moment.

And the processing module 33 is configured to obtain a touch detection result according to a difference between the first amplitude corresponding to each sensing channel and the second amplitude. The touch detection result is used for indicating that no touch exists or that a touch exists at a target position; the second amplitude is detected when the touch sensing driving module does not scan the N driving channels.

And the response module 34 is configured to respond to a touch operation for the target position when the touch detection result is used for indicating that the target position has touch.

Optionally, a target period corresponding to an interference signal in an environment where the touch device is located is K times of a period of the excitation signal, where K is an integer greater than or equal to 2; the target scanning duration for any driving channel is equal to the target period corresponding to the interference signal. Optionally, the processing module 33 is specifically configured to obtain K differences corresponding to each sensing channel in the target scanning duration, where the differences are differences between a first amplitude and the second amplitude; and acquiring the touch detection result according to the average value of the K difference values.

Optionally, the control module 31 is specifically configured to obtain a target period corresponding to an interference signal in an environment where the touch device is located; and acquiring the period of the excitation signal and the target scanning duration according to the target period corresponding to the interference signal.

Optionally, the control module 31 is specifically configured to receive an initial frequency of at least one interference signal in an environment where the touch device is located; and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one interference signal.

Optionally, the control module 31 is specifically configured to determine at least one target interference signal from the at least one interference signal according to an initial frequency of each interference signal; and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one target interference signal.

Optionally, the touch control assembly may further include an amplifying module configured to amplify the initial sensing signal output by the sensing channel to obtain an amplified sensing signal. In this implementation, the acquiring module 32 is specifically configured to acquire the first amplitude of the amplified sensing signal; and obtaining a touch detection result according to the difference between the first amplitude value of each amplified sensing signal and the second amplitude value of the sensing signal output by each sensing channel.

The touch position detecting device 30 provided in the present application is configured to execute the foregoing embodiment of the touch position detecting method, and its implementation principle and technical effects are similar, and will not be described again.

Fig. 11 is a schematic structural diagram of another touch position detecting device provided in the present application. As shown in fig. 11, the apparatus 40 may include: a control module 41, an acquisition module 42, a processing module 43, and a response module 44. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the control module 41 is configured to control the touch sensing driving module to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning time. The target period corresponding to the interference signal in the environment where the touch equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration for any driving channel is equal to the target period corresponding to the interference signal.

And the acquiring module 42 is configured to acquire K target amplitudes of the sensing signal output by each sensing channel in the target scanning duration. The target amplitude is the result of superposition of the excitation signal and the interference signal.

And the processing module 43 is configured to obtain a touch detection result according to the average value of the K target amplitudes. The touch detection result is used for indicating that no touch exists or that touch exists at the target position.

And the response module 44 is configured to respond to a touch operation for the target position when the touch detection result is used to indicate that the target position has touch.

The touch position detecting device 40 provided in the present application is used for executing the foregoing embodiment of the touch position detecting method, and its implementation principle and technical effects are similar, and will not be repeated here.

The present application also provides a computer-readable storage medium, which may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, etc., in which program codes may be stored, and in particular, the computer-readable storage medium stores program instructions for the methods in the above embodiments.

The present application also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the display device may read the execution instructions from the readable storage medium, and execution of the execution instructions by the at least one processor causes the display device to implement the touch position detection method provided by the various embodiments described above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A touch device, the touch device comprising:

the display screen is used for displaying images;

a touch assembly, comprising: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; n and M are integers greater than or equal to 2;

a processor coupled to the display screen and the touch sensitive drive module, the processor configured to:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment;

collecting a first amplitude value of an induction signal output by the induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment; the target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; outputting excitation signals to the induction channels by the driving channels at the target reference moment;

Acquiring a touch detection result according to the difference between the first amplitude corresponding to each sensing channel and the second amplitude; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

2. The touch device of claim 1, wherein a target period corresponding to an interference signal in an environment where the touch device is located is K times a period of the excitation signal, and K is an integer greater than or equal to 2; the target scanning duration for any driving channel is equal to a target period corresponding to the interference signal, and the processor is configured to:

obtaining K difference values corresponding to each induction channel in the target scanning time length, wherein the difference values are differences between a first amplitude value and the second amplitude value;

and acquiring the touch detection result according to the average value of the K difference values.

3. The touch device of claim 2, wherein the processor is configured to:

acquiring a target period corresponding to an interference signal in the environment where the touch equipment is located;

And acquiring the period of the excitation signal and the target scanning duration according to the target period corresponding to the interference signal.

4. The touch device of claim 3, wherein the processor is configured to:

receiving an initial frequency of at least one interference signal in an environment where the touch equipment is located;

and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one interference signal.

5. The touch device of claim 4, wherein the processor is configured to:

determining at least one target interference signal from the at least one interference signal according to an initial frequency of each interference signal;

and acquiring a target period corresponding to the interference signal in the environment where the touch equipment is located according to the initial frequency of the at least one target interference signal.

6. The touch device of any of claims 1-4, wherein the touch assembly further comprises: an amplifying module;

the amplifying module is used for amplifying the initial sensing signal output by the sensing channel and outputting an amplified sensing signal;

The processor is configured to:

acquiring an amplified first amplitude value and an amplified second amplitude value;

and acquiring the touch detection result according to the difference between the amplified first amplitude value and the amplified second amplitude value corresponding to each sensing channel.

7. A touch device, the touch device comprising:

the display screen is used for displaying images;

a touch assembly, comprising: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; n and M are integers greater than or equal to 2;

a processor coupled to the display screen and the touch sensitive drive module, the processor configured to:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment; the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration of any driving channel is equal to the target period corresponding to the interference signal;

Obtaining K target amplitude values of the induction signals output by each induction channel in the target scanning time length; the target amplitude is the result of superposition of the excitation signal and the interference signal;

acquiring a touch detection result according to the average value of the K target amplitudes; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

8. The touch position detection method is characterized in that the touch equipment comprises a touch component, and the touch component comprises: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N is an integer greater than or equal to 2; the M is an integer greater than or equal to 2, the method comprising:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment;

collecting a first amplitude value of an induction signal output by the induction channel corresponding to a first scanning moment and a second amplitude value of an induction signal output by each induction channel corresponding to a target reference moment; the target reference time is any time between the first scanning time and a second scanning time, and the second scanning time is adjacent to the first scanning time; outputting excitation signals to the induction channels by the driving channels at the target reference moment;

Acquiring a touch detection result according to the difference between the first amplitude corresponding to each sensing channel and the second amplitude; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

9. The touch position detection method is characterized in that the touch equipment comprises a touch component, and the touch component comprises: the touch sensing driving module, the driving electrode layer and the sensing electrode layer, wherein the driving electrode layer comprises N driving channels; the induction electrode layer comprises M induction channels; the N and M are integers greater than or equal to 2, and the method comprises the following steps:

the touch sensing driving module is controlled to scan the N driving channels one by one, so that each driving channel outputs an excitation signal to each sensing channel at each scanning moment; the target period corresponding to the interference signal in the environment where the touch control equipment is located is K times of the period of the excitation signal, wherein K is an integer greater than or equal to 2; the target scanning duration of any driving channel is equal to the target period corresponding to the interference signal;

Obtaining K target amplitude values of the induction signals output by each induction channel in the target scanning time length; the target amplitude is the result of superposition of the excitation signal and the interference signal;

acquiring a touch detection result according to the average value of the K target amplitudes; the touch detection result is used for indicating that no touch exists or that a touch exists at a target position;

and when the touch detection result is used for representing that the target position has touch, responding to touch operation aiming at the target position.

10. A computer readable storage medium having stored thereon computer executable instructions which, when executed by a processor, implement the method of claim 8 or 9.