WO2019113725A1

WO2019113725A1 - Touch controller, apparatus, terminal and touch control method

Info

Publication number: WO2019113725A1
Application number: PCT/CN2017/115409
Authority: WO
Inventors: 李华飞
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2019-06-20
Also published as: CN110192170B; CN110192170A

Abstract

A touch controller (101), an apparatus, a terminal and a touch control method. The touch controller (101) comprises: a driving sensing unit (1012) and a processing unit (1011) connected to each other; the driving sensing unit (1012) is configured to connect a touch region (1021) and a frame region (1022) of a touch panel (102), and receive sensing signals from the touch region (1021) and the frame region (1022); the processing unit (1011) is configured to determine, according to the sensing signals and preset conditions, whether an edge misoperation exists, and ignore the edge misoperation, the preset conditions at least including: simultaneously touching the touch region (1021) and the frame region (1022) at the same time, or the processing unit (1011) is configured to report the sensing signals to a main processor (11) for same to determine, according to the sensing signals and the preset conditions, whether the edge misoperation exists, and ignore the edge misoperation. Said solution can solve the problem in the prior art that an error response easily occurs when a user's palm or the like contacts an edge region of the touch panel (102).

Description

Touch controller, device, terminal and touch method

Technical field

The present application relates to the field of touch technologies, and in particular, to a touch controller, a device, a terminal, and a touch method.

Background technique

With the development of technology, touch technology is becoming more and more popular in the application of medium and large-size screen terminals, such as large-screen mobile phones and tablet computers.

The inventors have found that at least the following problems exist in the prior art: when operating the terminal (for example, when using a stylus input), part of the user's palm (for example, the position of the tiger's mouth) often stays on the touch panel when the palm rests on the touch panel. When the center position is near, since the area of the palm touch screen is large, the palm can be distinguished from the user's finger by the screen data (touch area and shape, etc.), but when the palm is close to the edge of the touch panel, The contact characteristics of the palm and the touch panel become very close to the finger, and it is difficult to distinguish whether the palm touch or the finger touch, thereby causing the terminal to respond to similar unintentional touch actions, causing inconvenience to the user input and reducing user input. effectiveness.

Summary of the invention

A part of the embodiments of the present invention provides a touch controller, a device, a terminal, and a touch control method to solve the problem that a user's palm or the like is likely to cause a false response when contacting an edge region of the touch panel.

The embodiment of the present application provides a touch controller, including: a connected driving sensing unit and a processing unit; the driving sensing unit is configured to connect a touch area and a frame area of the touch panel, and receive the touch area and a sensing signal of the frame area; the processing unit is configured to determine whether there is an edge erroneous operation according to the sensing signal and a preset condition, and to block the edge erroneous operation, the preset condition at least: simultaneously touching the touch The control area and the frame area, or the processing unit is configured to report the sensing signal to the main processor, where the main processor determines whether the edge error exists according to the sensing signal and the preset condition Operate and block the edge misoperation.

The embodiment of the present invention further provides a touch device, including: a touch panel and a touch controller as described above; the touch panel includes a touch area and a frame area on a circumference side of the touch area. The touch detection area is formed with a touch detection unit for detecting touch input information, and the frame area is formed with a frame detection unit for detecting touch information of the frame, and the touch detection unit and the frame detection unit are connected to the touch control. Device.

The embodiment of the present application further provides a touch terminal, including: a main processor and a touch device as described above; the main processor is connected to the touch device.

The embodiment of the present invention further provides a touch method, which is applied to the touch terminal as described above, the touch method includes: acquiring touch input information of the touch area and frame touch information of the border area; The touch input information and the frame touch information detect whether there is an edge erroneous operation that satisfies a preset condition, the preset condition at least including simultaneously touching the touch area and the border area; if an edge erroneous operation is detected , the detected edge misoperation is masked.

Compared with the prior art, the embodiment of the present application detects the touch input information of the touch area of the touch panel and the frame touch information of the frame area, and determines whether there is a simultaneous touch according to the touch input information and the frame touch information. The touch operation of the touch area and the border area, and the touch operation of touching the touch area and the border area at the same time is regarded as an edge misoperation. Since the touch operation is performed based on the touch position of the touch operation (that is, whether the touch area and the frame area are simultaneously touched), the detection of the edge erroneous operation can be performed, and the touch area and the shape of the touch operation can be calculated not only in the existing needs. The detection efficiency of the edge misoperation is improved, and the accuracy of the edge misoperation detection is improved, and the response of the terminal to the mis-touch action can be reduced by more accurately shielding the edge misoperation, thereby improving the efficiency of the user input.

In addition, the preset condition further includes: a touch area on the touch area is greater than a preset threshold. Therefore, it is possible to accurately mask the edge misoperation of the touch area and the border area and the touch area on the touch area at the same time.

In addition, the driving sensing unit includes: a first driving sensing unit and a second driving sensing unit; the first driving sensing unit and the second driving sensing unit are both connected to the processing unit; the first driving sensing unit is used for Providing an excitation signal to the touch area and receiving a sensing signal of the touch area; the second driving sensing unit is configured to provide an excitation signal to the frame area, and receive a sensing signal of the frame area; One of the processing unit and the main processor is configured to determine whether there is an edge misoperation according to the sensing signals provided by the first driving sensing unit and the second driving sensing unit, and the preset condition, and shielding The edge is mishandled. Driving the touch area and the frame area separately by the independent driving sensing units facilitates the simplified driving control method.

In addition, the excitation signal of the first driving sensing unit and the second driving sensing unit are different in frequency; or the first driving sensing unit and the second driving sensing unit operate asynchronously. Therefore, the frame detecting unit and the touch detecting unit can be prevented from interfering with each other.

In addition, the frame detecting unit includes P capacitor detecting wires; the P capacitor detecting wire rings are disposed outside the touch area, and P is a natural number greater than or equal to 1. Thereby, the touch operation at various positions of the bezel area can be detected by a small number of capacitance detecting wires.

In addition, at least one of the P capacitance detecting wires simultaneously serves as a shield wire of the touch panel. Thereby, the touch panel structure can be simplified.

Additionally, the capacitance detecting wire is connected to a driving channel and a sensing channel of the touch controller to form a self-capacitance sensor; or one of the capacitance detecting wires is connected to the driving channel, and another capacitance detecting wire is connected to The sensing channel thus forms a mutual capacitance sensor. The capacitive sensor is simple in structure and easy to implement, which is conducive to cost saving.

In addition, the frame detecting unit includes Q touch sensors; Q is a natural number greater than or equal to 2; the Q touch sensors are distributed at different positions of the frame area, and are respectively used to detect whether the different positions are touch. Thereby, a plurality of frame touch operations can be detected.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic diagram showing the structure and application of a touch controller according to a first embodiment of the present application;

2 is a schematic structural diagram of a touch panel applied by a touch controller according to a first embodiment of the present application;

3 is a schematic diagram showing the structure and application of a touch device according to a second embodiment of the present application;

4 is a schematic structural diagram of a self-capacitive frame detecting unit according to a second embodiment of the present application;

FIG. 5 is a schematic structural diagram of a mutual capacitance type frame detecting unit according to a second embodiment of the present application; FIG.

6 is a schematic structural diagram of still another touch controller according to a second embodiment of the present application;

7 is a schematic structural view of a second driving sensing unit for a self-capacitance sensor according to a second embodiment of the present application;

8 is a schematic structural diagram of a second driving sensing unit for a self-capacitance sensor according to a second embodiment of the present application;

9 is a schematic structural diagram of a second driving sensing unit for a mutual capacitance sensor according to a second embodiment of the present application;

10 is a schematic structural diagram of a second driving sensing unit for a mutual capacitance sensor according to a second embodiment of the present application;

11 is a schematic structural diagram of a bezel detecting unit according to a third embodiment of the present application;

FIG. 12 is a flowchart of a touch method according to a fifth embodiment of the present application; FIG.

FIG. 13 is a flowchart of a touch method according to a sixth embodiment of the present application.

Detailed ways

In order to make the objects, the technical solutions and the advantages of the present application more clear, some embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

The first embodiment of the present application relates to a touch controller applied to a touch device, such as a touch device integrated with a medium and large size touch screen.

Please refer to the structure of the touch controller shown in Figure 1 and its application schematic. The touch controller 101 includes a processing unit 1011 and a driving sensing unit 1012, and the processing unit 1011 is connected to the driving sensing unit 1012. Referring to the structure of the touch panel 102 of the touch device shown in FIG. 2, the driving sensor unit 1012 is configured to connect the touch area 1021 of the touch panel 102 in the touch device 10 and the frame area 1022. A touch detection unit 1023 (not shown in FIG. 2) is formed on the touch area 1021. The touch detection unit 1023 is configured to detect touch input information on the touch area 1021. A frame detecting unit 1024 (not shown in FIG. 2) is disposed on the frame area 1022 for detecting the frame touch information on the frame area 1022.

The driving sensing unit 1012 is configured to provide an excitation signal to the touch detection unit 1023 and the frame detecting unit 1024, and receive the sensing signals of the touch area 1021 and the frame area 1022. The driving sensing unit 1012 sends the received sensing signal to the processing unit 1011. The processing unit 1011 is configured to receive the sensing signal from the touch area 1021 and the frame area 1022, or may also be used to mask the detected edge erroneous operation that meets the preset condition, that is, the processing unit 1011 is configured to use according to the touch area 1021. The touch input information acquires the touch coordinates of the touch operation, and suppresses the touch coordinates when it is determined that the touch operation is simultaneously touched in the bezel area 1022. Specifically, the processing unit 1011 can obtain the touch coordinates of the touch area 1021 according to the acquired touch input information, and determine whether the current touch is an edge misoperation according to the touch input information and the frame touch information, and if the edge is determined as an edge If the operation is incorrect, the touch operation is suppressed or blocked, that is, the obtained touch coordinates are not reported to the system, so that the screen does not respond to the touch operation.

In an example, the processing unit 1011 is further configured to report the touch input information and the frame touch information to the main processor 11 for the main processor 11 to block the detected edge misoperation, wherein the main processor 11 belongs to the touch. The manner of communication between the main processor 11 and the processing unit 1011 is well known to those skilled in the art and will not be described herein. That is to say, the touch controller herein may include a processing unit for determining or suppressing edge misoperations, or may not include a processing unit for determining and suppressing edge misoperations, and may be processed or determined by an external processor. The function.

Specifically, the driving sensing unit 1012 can be an integral unit, and the driving sensing unit 1012 is configured to provide an excitation signal to the touch detection unit 1023 and the frame detecting unit 1024, and is configured to receive the sensing signal fed back by the touch detecting unit 1023, and the processing unit 1011 The touch sensing input information is obtained according to the sensing signal fed back from the touch detecting unit 1023. The driving sensing unit 1012 is configured to receive the sensing signal fed back by the frame detecting unit 1024, and the processing unit 1011 is configured to use the sensing signal fed back from the frame detecting unit 1024. Get the border touch information. The touch input information includes, for example, touch input information of the stylus, touch input information of the user's finger, and touch input information (for example, touch information of the palm) that the touch detection unit 1023 can detect.

The processing unit 1011 is specifically configured to detect, according to the touch input information on the touch area 1021 and the frame touch information of the frame area 1022, whether there is an edge misoperation that satisfies a preset condition, and mask the detected edge misoperation. The edge misoperation mainly refers to a non-user-desired touch operation that occurs at the edge of the touch area 1021. For example, when using the stylus input, the user's palm may stay in the touch area 1021, and the palm touch operation is not expected by the user, which may cause the terminal to respond incorrectly. When the palm rests near the center position of the touch area 1021, since the shape and area of the palm are significantly larger than the finger, the screen body data (for example, the shape and area touched on the touch area 1021) is acquired, and the acquired touch shape is acquired. And the area is compared with the preset shape and the area, for example, the shape and the area of the finger, so that the screen data caused by the palm touch can be recognized; when the palm moves toward the edge of the touch area 1021 and stays in the touch area When the shape and the area at the edge of the 1021 are close to the user's finger, it is difficult to distinguish the palm data at this time from the finger data.

In this embodiment, the preset condition is, for example, simultaneous touch on the touch area and the border area. Specifically, after acquiring the touch input information and the frame touch information, the processing unit 1011 may determine whether the frame area 1022 is touched according to the frame touch information. If the frame area 1022 is touched, the touch control input information may continue to detect the touch according to the touch input information. The number of touch operations on the area 1021 is such that if the number of touch operations on the touch area 1021 matches the number of positions touched by the bezel area 1022, all touch operations on the touch area 1021 are masked, such as on the bezel area 1022. One of the positions is touched, and only one touch operation is detected on the touch area 1021, and the touch operation is masked. When the number of touch operations on the touch area 1021 is greater than the number of touch positions on the frame area 1022, the touch position of the touch operation on the touch area 1021 can be continuously detected, and the touch position on the frame area 1022 can be masked off. The number is the same and the touch operation at the edge position of the touch area 1021 is touched. Therefore, the present embodiment does not need to calculate the touch shape and the area of the touch operation on the touch area, and the edge erroneous operation can be quickly detected only according to whether the frame area 1022 is touched or the touch position of the touch operation on the touch area 1021. When the edge erroneous operation cannot be recognized according to the number of touch positions on the frame area 1022 and the touch position of the touch operation on the touch area 1021, the edge erroneous operation may be further detected according to the touch area of the touch operation on the touch area 1021. . For example, when the edge position of the touch area 1021 has multiple touch operations at the same time and the bezel area 1022 can only provide whether it is touched but cannot provide the number of touch positions thereon, the processing unit 1011 can also compare the touch area 1011. The size of the touch area of the plurality of touch operations at the edge position, for example, the size of the touch area of the two touch operations, and thus one touch operation with a larger touch area is used as an edge erroneous operation, thereby shielding the edge erroneous operation. For a medium-sized and large-sized touch terminal, since the chance of the user's finger touching the touch area and the border area at the same time is small, the chance of the palm touching the touch area and the border area at the same time is relatively large, so the detection is satisfied. The touch operation of the above preset condition can detect edge misoperation more quickly and accurately.

As an alternative, the preset condition may also be that the touch area in the touch area and the border area and the touch area are simultaneously greater than a preset threshold. The preset threshold is, for example, the area of the user's finger. When the touch operation on the touch area 1021 is detected while being touched on the frame area 1022, the touch area of the touch operation on the touch area 1021 is continuously calculated. The touch area of the touch operation on the touch area 1021 is larger than the area of the user's finger, and the current touch operation is blocked. When the finger touches the touch area 1021 and the frame area 1022 at the same time, the touch area on the touch area 1021 becomes smaller, so that the palm can be more accurately recognized when the touch area 1021 and the frame area 1022 are simultaneously touched. The edge is mishandled. In an actual application, the difference between the size of the other operating body and the size of the finger may be utilized to identify the edge misoperation caused by the edge of the touch area 1021. The embodiment does not specifically limit the touch body. For a palm having an area larger than a finger, the touch input information on the touch area 1021 (ie, the screen data generated by the palm on the touch area 1021) and the frame touch information on the border area 1022, such as whether the border is touched, are combined. That is, the screen data caused by the palm touch (ie, edge misoperation) can be more accurately recognized.

In practical applications, since the contact of the palm with the touch area 1021 is often accompanied by the input operation of the stylus, the preset condition may further include detecting that the stylus is turned on or detecting the stylus input signal. The present embodiment does not specifically limit the preset condition, as long as the preset condition is based on the touch input information and the frame touch information.

Compared with the prior art, the touch input information on the touch area of the touch panel and the touch information on the frame area of the touch panel can quickly detect whether there is a simultaneous touch in the touch area and the border area. Touch operation and mask off touch operations while touching the touch area as well as the border area. Since the touch position of the touch operation is simultaneously touched in the touch area and the frame area to determine whether it is an edge misoperation, the calculation can greatly simplify the calculation and improve the detection efficiency with respect to detecting the shape and the area of the touch operation. . Therefore, the present embodiment is useful for reducing the edge false trigger and improving the user input efficiency on the basis of quickly and accurately detecting the edge misoperation.

The second embodiment of the present application relates to a touch device, such as a touch terminal having a medium and large size touch screen, such as a smart phone or a tablet computer. The present embodiment does not specifically describe the type of the touch terminal. limit.

Please refer to the structure and application schematic of the touch device 10 shown in FIG. 3 . The touch device 10 includes the touch controller 101 and the touch panel as described in the first embodiment, and the touch controller 101 is connected to the touch panel. As shown in FIG. 2 , the touch panel 102 includes a touch area 1021 and a frame area 1022 . The touch area 1021 is formed with a touch detection unit 1023 (not shown in FIG. 2 ). The touch detection unit 1023 is configured to be used. The touch input information on the touch area 1021 is detected. A frame detecting unit 1024 (not shown in FIG. 2) is disposed on the frame area 1022 for detecting the frame touch information on the frame area 1022. For the function of the touch controller 101, please refer to the first embodiment, and details are not described herein again.

The touch detection unit 1023 generally adopts a matrix sensing structure. The types of the sensing structures include, for example, a capacitive type, a resistive type, an ultrasonic type, and an optical type. The structure of the touch detecting unit 1023 is well known to those skilled in the art. I won't go into details here. The frame detecting unit 1024 is configured to detect the frame touch information of the frame area 1022. For example, the frame detecting unit 1024 can adopt a self-capacitance or mutual capacitance type sensor, and the capacitive sensor has a simple structure and is easy to implement, which is beneficial to cost saving. In some examples, the frame detecting unit 1024 can also use the sensing structure in the touch detecting unit 1023, that is, the sensing unit located at the edge position of the touch detecting unit 1023 is used to detect touch information of the frame area, and the embodiment is The frame detecting unit 1024 is not particularly limited as long as the frame touch information of the bezel area 1022 can be detected.

When the frame detecting unit 1024 adopts a self-capacitance sensor, the detecting electrode of the self-capacitance sensor is connected to the driving channel and the sensing channel of the driving sensing unit 1012 of the touch controller 101, and the processing unit 1011 of the touch controller 101 detects the detecting electrode. The amount of capacitance change detects the frame touch information. When the frame detecting unit 1024 adopts the mutual capacitance sensor, the driving electrode and the sensing electrode of the mutual capacitance sensor are respectively connected to the driving channel and the sensing channel of the driving sensing unit 1012, and the processing unit 1011 detects the capacitance between the driving electrode and the sensing electrode. The amount of change detects the frame touch information.

As shown in FIG. 4 , in the actual application, the frame detecting unit 1024 of the touch panel 102 includes, for example, P capacitor detecting wires 10241 , where P may be 1. This embodiment does not specifically limit P. The capacitance detecting wire 1041 is disposed outside the touch area 1021. Specifically, the capacitance detecting wire 1041 is connected to the driving channel and the sensing channel of the touch controller 101 to form a self-capacitance sensor, that is, the capacitance detecting wire 1041 is connected to the driving channel of the driving sensing unit 1012 (not shown in FIG. 4) and the sensing. Channels to form a self-contained sensor. The driving sensing unit 1012 detects the edge touch information on the frame area 1022 through the capacitance detecting wire 10241. In one example, at least one of the capacitance detecting wires 10241 serves as a shield wire of the touch panel 102 at the same time, thereby simplifying the process.

Referring to the structural schematic diagram of the touch panel 102 of the touch device shown in FIG. 5, an alternative embodiment of the frame detecting unit 1024 is provided. The frame detecting unit 1024 includes at least two capacitance detecting wires and one of the capacitance detecting wires. Connected to the drive channel, another capacitor sense wire is connected to the sense channel to form a mutual capacitance sensor 1042, and two capacitances of the mutual capacitance sensor 1042 detect the wire spacing setting. The processing unit 1011 acquires the frame touch information on the bezel area 1022 by detecting the capacitance change amount of the mutual capacitance formed by the two capacitance detecting wires. In practical applications, the frame detecting unit 1024 may also include a plurality of capacitance detecting wires, for example, two, and each of the capacitance detecting wires is a self-capacitance sensor, or a setting of a connection manner between the capacitance detecting wire and the driving sensing unit 1012. The frame detecting unit 1024 can switch between the self-capacitance and the mutual capacitance mode, for example, a multiplexer is added between the frame detecting unit 1024 and the driving sensing unit 1012, and a plurality of wires are selectively connected to the driving through the multiplexer. Channel, sensing channel.

Since the capacitance detecting wire loop is disposed outside the touch area 1021, the touch controller 101 can detect any position of the frame area 1022, so that the frame area 1022 can be realized by a small number of touch sensors. Touch information detection. The touch detection unit 1023 can adopt a structure well known to those skilled in the art, and details are not described herein again.

As shown in FIG. 4, when the touch operation shown by the solid circle area in FIG. 4 simultaneously touches the touch area 1021 and the frame area 1022, the processing unit 1011 of the touch controller 101 or the main processor 11 can determine that it is The edge is erroneously operated, and the touch operation shown by the dotted circle area can be regarded as a normal touch operation because the frame area 1022 is not touched, so that the edge misoperation of the palm or the like can be quickly recognized.

As shown in FIG. 5, when the two capacitance detecting wires in FIG. 5 form a mutual capacitance type sensor, as long as the touch operation shown by the circle area touches the mutual capacitance sensor on the frame area 1022, it can be determined as an edge error. operating. In practical applications, when the two capacitance detecting wires shown in FIG. 5 are self-capacitive sensors, as the number of the capacitance detecting wires increases, the accuracy of the frame touch information detection on the frame region 1022 can be improved.

Referring to the structural schematic diagram of the touch controller 101 shown in FIG. 6, an alternative embodiment of the touch controller 101 is provided. The touch controller 101 includes a processing unit 1011, a first driving sensing unit 1013, and a second driving sensing unit 1014. The first driving sensing unit 1013 and the second driving sensing unit 1014 are two independent driving sensing units. The driving sensing unit 1013 and the second driving sensing unit 1014 are both connected to the processing unit 1011. The first driving sensing unit 1013 is configured to provide an excitation signal to the touch detecting unit 1023 of the touch area 1021 and receive an sensing signal of the touch area 1021. The second driving sensing unit 1014 is configured to provide an excitation signal to the bezel detecting unit 1024 and receive the sensing signal of the bezel area 1022.

Please refer to FIG. 7 for a schematic diagram of a second driving sensing unit 1014 for driving a self-capacitive frame detecting unit. The second driving sensing unit 1014 includes an excitation signal circuit 10141, an amplifying circuit 10142, and an analog-to-digital conversion circuit 10143. Transceiver switch 10144 is transmitted and received. The processing unit 1011 is connected to the input end of the excitation signal circuit 10141, the output end of the excitation signal circuit 10141 is connected to the first end of the transceiving switch 10144, the second end of the transceiving switch 10144 is connected to the capacitance detecting lead 1041, and the transceiving switch 10144 is connected. The third end is connected to the input end of the amplifying circuit 10142, the output end of the amplifying circuit 10142 is connected to the input end of the analog to digital converting circuit 10143, and the output end of the analog to digital converting circuit 10143 is connected to the processing unit 1011. The processing unit 1011 controls the excitation signal circuit 10141 to input a driving signal to the capacitance detecting wire 10241 through the transceiver switching switch 10144. The electrical signal outputted by the capacitance detecting wire 10241 is input to the amplifying circuit 10142 through the transceiving switch 10144, and is amplified by the amplifying circuit 10142 and then input to analog-digital conversion. The circuit 10143 is converted into a digital signal by the analog-to-digital conversion circuit 10143 and then input to the processing unit 1011. The processing unit 1011 calculates the capacitance change amount of the capacitance detecting wire 10241 based on the change of the digital signal, and determines whether the bezel area 1024 is touched according to the capacitance change amount. If there is only one capacitance detecting wire 10241, the transceiver switching switch 10144 can be directly connected to the input terminal of the amplifying circuit 10142. Referring to FIG. 7 , in one example, when the frame detecting unit includes a plurality of capacitance detecting wires 10241 , the multiplexing switch 10145 can be added to the second driving sensing unit 1014 . The multiplexing switch 10145 is a multi-channel input and output switch that can support touch detection of a plurality of channels (i.e., a plurality of self-capacitance capacitance detecting wires 10241) through the multiplexing switch 10145. At this time, as shown in FIG. 7, the transceiving switch 10144 can be connected to the input terminal of the amplifying circuit 10142 through the multiplexing switch 10145.

Please refer to FIG. 8 , which is a schematic structural diagram of a second driving sensing unit 1014 for driving a self-capacitive frame detecting unit. In another example, when the frame detecting unit includes a plurality of capacitance detecting wires 10241, the first The number of the amplifying circuit 10142 and the analog-to-digital converting circuit 10143 in the two driving sensing unit 1014 is the same as the number of the capacitance detecting wires 10241, that is, each of the capacitance detecting wires 1041 is separately configured with an amplifying circuit and a digital converting circuit. At this time, as shown in FIG. 8, each of the capacitance detecting wires 10241 is connected to the amplifying circuit 10142, respectively.

FIG. 9 is a schematic structural diagram of a second driving sensing unit based on a mutual capacitance type frame detecting unit. One end of the mutual capacitance type sensor 1042 is connected to an output end of the excitation signal circuit 10141, and the other end of the mutual capacitance type sensor 1042 and an amplifying circuit are shown. The input terminal of 10142 is connected, so that the second driving sensing unit 1014 applies a driving signal to the driving electrode of the mutual capacitance sensor 1042, and receives the sensing signal through the sensing electrode of the mutual capacitance sensor 1042. If the frame detecting unit 1024 has only one mutual capacitance sensor 1042, the mutual capacitance sensor 1042 can be directly connected to the input end of the amplifying circuit 10142. Referring to FIG. 9 , in an example, when the frame detecting unit 1024 includes a plurality of mutual capacitance sensors 1042 , the multiplexing switch 10145 needs to be added to the second driving sensing unit 1014 . The multiplexer switch 10145 is equivalent to a multi-channel input/output switch, and the multiplexer switch 10145 can support touch detection of a plurality of channels (ie, a plurality of mutual capacitance sensors 10242). At this time, as shown in FIG. 9, each (for example, three) mutual capacitance sensors 10242 are connected to the input terminal of the amplification circuit 10142 through the multiplexing switch 10145.

Please refer to FIG. 10 for another structural diagram of the second driving sensing unit based on the mutual capacitance type frame detecting unit. In one example, when the frame detecting unit 1024 includes a plurality of mutual capacitance sensors 1042, the second driving sensing is performed. The number of the amplifying circuit 10142 and the analog-to-digital converting circuit 10143 in the unit 1014 is the same as the number of the mutual capacitive sensor 10242, that is, the amplifying circuit and the digital converting circuit are separately configured for each mutual capacitive sensor 1042. At this time, as shown in FIG. 10, each of the mutual capacitance sensors 10242 is connected to the amplification circuit 10142.

The structure of the first driving sensing unit 1013 is well known to those skilled in the art, and details are not described herein again.

It is worth mentioning that the excitation signal frequency of the first driving sensing unit 1013 and the second driving sensing unit 1014 are different, so that the frame detecting unit 1024 and the touch detecting unit 1023 do not interfere with each other when working simultaneously. As an alternative, the first driving sensing unit 1013 and the second driving sensing unit 1014 can also work asynchronously, so that the frame detecting unit 1024 and the touch detecting unit 1023 do not interfere with each other.

It should be noted that, in practical applications, a shielding layer or a shielding wire may be disposed between the frame detecting unit 1024 and the touch detecting unit 1023, so that the frame detecting unit 1024 and the touch detecting unit 1023 can synchronize with the same excitation frequency. Work so that they do not interfere with each other.

The capacitance detecting wires of the frame detecting unit of the embodiment are all disposed outside the touch area. Therefore, when a small amount of the capacitance detecting wire is disposed, the frame area can be touched when being touched at any position of the frame area, and The driving of the bezel detecting unit can be realized by the same driving sensing unit or a separate driving sensing unit (ie, the second driving sensing unit).

Compared with the prior art, the present invention adds a frame detecting unit to the frame area of the touch panel to detect whether the frame area is touched, so that it can be determined according to the touch position of the touch operation whether it is an edge misoperation, and thus In terms of detecting the shape and area of the touch operation, the calculation can be greatly simplified and the detection efficiency can be improved.

The third embodiment of the present application relates to a touch device. This embodiment can be used as an alternative embodiment of the second embodiment. The main difference between the present embodiment and the second embodiment is that, in the second embodiment, the frame detecting unit is Each of the capacitance detecting wires is disposed on the outer side of the touch area, that is, at any position in the entire frame area, for example, the edge touches on the left side, the right side, the upper side, and the lower side can be measured by the same or the same set of annular capacitance detecting wires. In the third embodiment, the bezel detecting unit includes a plurality of capacitive sensors, and each of the capacitive sensors is capable of detecting different positions of the bezel area.

Referring to the structural diagram of the touch panel shown in FIG. 11 , the frame detecting unit includes Q touch sensors 10243 , and Q is a natural number greater than or equal to 2 . The Q touch sensors are distributed at different positions of the bezel area 1022 and are respectively used to detect whether different positions are touched.

In practical applications, the touch sensor can be connected to the driving channel and the sensing channel of the touch controller to form Q self-capacitive sensors, or a part of the Q touch sensors is connected to the driving channel, and the other part is connected to the sensing channel. To form at least one mutual capacitive sensor. As the number of touch sensors increases, the accuracy with which the touch controller can detect the touch position of the bezel area 1022 is higher. For example, the four frame positions of the top, bottom, left, right, and the like of the bezel area 1022 are each provided with a plurality of touch sensors (the small squares in FIG. 11 indicate touch sensors). Thus, when multiple positions of the bezel area 1022 are simultaneously touched, they can be detected. In one example, the frame detecting unit includes four touch sensors, and the four touch sensors are respectively disposed on four sides of the top, bottom, left, and right sides of the frame area, and are respectively used to detect whether each side of the frame area is touched. In this way, when it is detected that the border area is touched, it is possible to distinguish which side of the border area is touched, and since each side of the border area can detect the touch separately, when edge misoperation occurs simultaneously on multiple sides , all edge misoperations can be detected more accurately. For example, when a touch is detected at two different positions on the border area, a maximum of two frame touches can be detected according to the screen data on the touch area.

In this embodiment, different positions of the frame area are touched by the touch sensors at different positions, so that all edge error operations can be screened more quickly and accurately when edge misoperation occurs at multiple positions of the frame area.

The fourth embodiment of the present application relates to a touch terminal, such as a tablet computer, a smart phone, a car audio, and the like. The touch terminal of this embodiment includes the touch device and the main processor as described in the second or third embodiment.

The touch controller can be used to mask the detected edge misoperation that meets the preset condition, or the touch controller is configured to report the touch input information and the frame touch information obtained by the touch controller to the main processor for shielding detection by the main processor. The edge to the wrong operation.

The touch terminal of the embodiment can detect the edge misoperation more quickly or accurately by detecting the touch information of the frame on the frame area and combining the touch input information on the touch area, thereby facilitating the user input efficiency.

The fifth embodiment of the present application relates to a touch method, which is applied to a touch terminal, such as a tablet computer, as described in the fourth embodiment.

Please refer to the flowchart of the touch method shown in FIG. 12, the touch method includes:

Step 201: Acquire touch input information of the touch area and border touch information of the border area.

The touch input information includes, for example, touch input information of the stylus, touch input information of the user's finger, and other touch input information that can be detected (for example, touch information of the palm). The frame touch information includes, for example, that the bezel area is touched or the bezel area is not touched. In an example, the frame touch information may further include: touch position information of the frame area, for example, the left side or the right side of the frame area is touched, and the number of touch operations of the frame may be acquired according to the touch information of the frame, for example, 0 or 1 Or 2 etc. Specifically, a plurality of touch sensors are disposed on the frame area, and the touch sensors may be evenly distributed in the frame area, or distributed in the frame area according to actual needs or in a densely spaced manner, so that touch information at different positions on the frame area can be detected, for example, When the palm of the left hand touches the left side of the border area of the tablet, and the palm of the right hand touches the right side of the border area, two border touches are generated.

Step 202: Detect whether there is an edge erroneous operation that satisfies the preset condition according to the touch input information and the frame touch information. If an edge erroneous operation is detected, step 203 is performed; otherwise, the process returns to step 201.

Specifically, edge misoperation refers to a non-user-desired touch operation that occurs at the edge of the touch area. Specifically, for example, when using a stylus input, the palm of the user may stay in the touch area, and the touch operation of the palm is not desired by the user, which may cause the touch terminal to respond incorrectly. When the palm rests near the center of the touch area, since the shape and area of the palm are significantly larger than the finger, the screen data (for example, the shape and area touched on the touch area) is acquired, and the acquired touch shape and The area is compared with the preset shape and the area (such as the shape and area of the finger) to identify the screen data caused by the palm touch; when the palm moves toward the edge of the touch area and stays at the edge of the touch area When the shape and the area are close to the user's finger, it is difficult to distinguish the palm data at this time from the finger data (ie, the screen data generated by the finger touch). Therefore, for a palm having an area larger than a finger, combining the touch input information on the touch area (for example, the screen data generated by the palm) and the frame touch information on the border area (for example, whether the border is touched) may be more Accurately identify the screen data caused by the palm touch. Specifically, the preset condition is, for example, simultaneous touch on the touch area and the border area. For a touch terminal (such as a tablet) with a large screen size, the user's finger touches the touch area and the border area at the same time. There is less chance of touching the touch area and the border area at the same time than the palm, and the operation of touching the touch area and the border area at the same time is regarded as an edge misoperation, which can reduce the terminal error response.

In this embodiment, detecting the edge erroneous operation that meets the preset condition according to the touch input information and the frame touch information includes: detecting whether there is a frame touch operation on the frame area according to the frame touch information, and if there is a frame touch operation, according to the touch The input information detects an edge misoperation that satisfies a preset condition. If there is no border touch operation, it can quickly determine that there is no edge misoperation, and returns to step 201.

In an example, detecting the edge erroneous operation that meets the preset condition according to the touch input information specifically includes: obtaining the number of the frame touch operations according to the frame touch information, and detecting the edge erroneous operation according to the number of the frame touch operations. For example, when it is determined that the number of touch operations of the frame is 1 according to the touch information of the frame, it is determined whether there are multiple touch operations in the touch area according to the touch input information. If there is one touch operation, the touch operation may be directly determined as If the edge is mis-operated, if there are multiple touch operations, the touch position of each touch operation can be further analyzed according to the touch input information, thereby filtering out one edge misoperation in the touch area and the border area at the same time.

When two frame touch operations are detected, and only two touches are detected on the touch area according to the touch input information, it can be determined that the two touches of the touch area are edge misoperations, and if the touch is detected When there are three touches on the area, the two edge misoperations and one normal touch operation can be further distinguished according to the screen data. Therefore, all edge misoperations can be quickly and accurately identified according to the number of frame touches.

In the actual application, in order to more accurately identify the edge misoperation caused by the palm or the like, the preset condition may also be that the touch area in the touch area and the border area and on the touch area is greater than a preset threshold, and the preset threshold is preset. For example, the area of the user's finger is such that when the finger touches the touch area and the frame area at the same time, the touch area on the touch area becomes smaller, so that the palm can be more accurately recognized while touching the touch area. And an edge misoperation caused by the bezel area and the touch area is close to the touch area of the finger. In some examples, the difference between the size of the other operating body and the size of the finger may be utilized to identify the edge misoperation caused by the edge of the touch area. The present embodiment does not specifically limit the touch body and the preset condition.

Step 203: Mask the detected edge misoperation.

Specifically, if the touch controller detects an edge misoperation, the touch controller does not report the coordinates of the edge misoperation to the main processor. If the main processor detects the edge misoperation, the main processor does not apply to the application or The operating system reports the coordinates corresponding to the edge misoperation.

The sixth embodiment of the present application relates to a touch method, which is improved on the basis of the fifth embodiment, and further defines a detection condition of edge misoperation.

Referring to FIG. 13 , the touch method of this embodiment includes steps 301 to 304 . Step 301 is the same as step 201, and steps 303 and 304 are the same as

steps

202 and 203, and details are not described herein again.

Step 302: Determine whether the touch input information includes stylus input information. If the stylus input information is included, proceed to step 303. If the stylus input information is not included, return to step 301.

Compared with the sixth embodiment, the contact between the palm and the touch area is often accompanied by the input operation of the stylus. Therefore, when detecting the input information of the stylus, the embodiment indicates that the user is using the stylus. At this time, by performing

steps

303 and 304, the edge error caused by the palm can be effectively shielded. When the user does not use the stylus, step 303 and step 304 are not performed, which is beneficial to reducing system power consumption. A person skilled in the art can understand that the above embodiments are specific embodiments of the present application, and various changes can be made in the form and details without departing from the spirit and scope of the application. range.

Claims

A touch controller, comprising: a connected driving sensing unit and a processing unit;

The driving sensing unit is configured to connect the touch area of the touch panel and the frame area, and receive the sensing signals of the touch area and the frame area;

The processing unit is configured to determine, according to the sensing signal and a preset condition, whether there is an edge erroneous operation, and to block the edge erroneous operation, where the preset condition at least includes: simultaneously touching the touch area and the border And the processing unit is configured to report the sensing signal to the main processor, where the main processor determines, according to the sensing signal and the preset condition, whether the edge misoperation exists, and blocks the Edge misoperation.
The touch controller of claim 1 , wherein the preset condition further comprises: a touch area on the touch area is greater than a preset threshold.
The touch controller according to claim 1, wherein the driving sensing unit comprises: a first driving sensing unit and a second driving sensing unit;

The first driving sensing unit and the second driving sensing unit are both connected to the processing unit;

The first driving sensing unit is configured to provide an excitation signal to the touch area and receive an sensing signal of the touch area;

The second driving sensing unit is configured to provide an excitation signal to the frame area and receive a sensing signal of the frame area;

One of the processing unit and the main processor is configured to determine whether there is an edge misoperation according to the sensing signal provided by the first driving sensing unit and the second driving sensing unit, and the preset condition, and Shield the edge from misoperation.
The touch controller according to claim 3, wherein the first driving sensing unit and the second driving sensing unit have different excitation signal frequencies; or the first driving sensing unit and the second The drive sensing unit works asynchronously.
The touch controller according to claim 1, wherein one of the processing unit and the main processor is configured to acquire touch coordinates of a touch operation according to touch input information of the touch area, and The touch coordinates are suppressed when it is determined that the touch operation is simultaneously touching the edge region.
A touch device, comprising: a touch panel; and the touch controller according to any one of claims 1 to 5;

The touch panel includes a touch area and a frame area on a side of the touch area. The touch area is formed with a touch detection unit for detecting touch input information, and the frame area is formed with a frame for detecting A frame detecting unit that touches information, and the touch detecting unit and the frame detecting unit are both connected to the touch controller.
The touch device of claim 6, wherein the frame detecting unit comprises P capacitor detecting wires; the P capacitor detecting wire rings are disposed outside the touch region, and P is greater than or equal to The natural number of 1.
The touch device of claim 7, wherein at least one of the P capacitance detecting wires simultaneously serves as a shield wire of the touch panel.
The touch device of claim 7, wherein the capacitance detecting wire is connected to a driving channel and a sensing channel of the touch controller to form a self-capacitance sensor; or one of the capacitance detecting wires is connected To the drive channel, another capacitive sensing wire is connected to the sensing channel to form a mutual capacitance sensor.
The touch device according to claim 6, wherein the frame detecting unit comprises Q touch sensors; Q is a natural number greater than or equal to 2;

The Q touch sensors are distributed at different positions of the bezel area, and are respectively used to detect whether the different positions are touched.
The touch device according to claim 10, wherein the touch sensor is connected to a driving channel and a sensing channel of the touch controller to form Q self-capacitive sensors; or a part of the Q touch sensors Connected to the drive channel, another portion of which is coupled to the sensing channel to form at least one mutual capacitive sensor.
A touch terminal, comprising: a main processor; and the touch device according to any one of claims 6 to 11;

The main processor is connected to the touch device.
A touch method is applied to the touch terminal according to claim 12, wherein the touch method comprises:

Obtaining touch input information of the touch area and border touch information of the border area;

And detecting, according to the touch input information and the frame touch information, whether there is an edge erroneous operation that satisfies a preset condition, where the preset condition includes at least simultaneously touching the touch area and the frame area; The edge misoperation prevents the edge from being mishandled.
The touch control method according to claim 13, wherein the preset condition further comprises: a touch area on the touch area is within a preset range.
The touch control method according to claim 13 or claim 14, wherein the detecting, by the touch input information and the frame touch information, whether there is an edge misoperation that satisfies a preset condition, specifically includes:

Detecting whether a border touch operation exists on the border area according to the frame touch information;

If the frame touch operation is present, detecting an edge misoperation that satisfies a preset condition according to the touch input information.
The touch control method of claim 13, wherein the obtaining the touch input information of the touch area and the frame touch information of the border area further includes:

Determining whether the touch input information includes stylus input information, and if the stylus input information is included, entering the detecting according to the touch input information and the frame touch information to determine whether a preset condition is met Edge misoperation.