WO2020181404A1 - 触控芯片、触控检测方法、触控检测系统及电子设备 - Google Patents

触控芯片、触控检测方法、触控检测系统及电子设备 Download PDF

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Publication number
WO2020181404A1
WO2020181404A1 PCT/CN2019/077437 CN2019077437W WO2020181404A1 WO 2020181404 A1 WO2020181404 A1 WO 2020181404A1 CN 2019077437 W CN2019077437 W CN 2019077437W WO 2020181404 A1 WO2020181404 A1 WO 2020181404A1
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WIPO (PCT)
Prior art keywords
touch
module
synchronization signal
drive
chip
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PCT/CN2019/077437
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English (en)
French (fr)
Inventor
袁广凯
蒋宏
Original Assignee
深圳市汇顶科技股份有限公司
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Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2019/077437 priority Critical patent/WO2020181404A1/zh
Priority to EP19861232.7A priority patent/EP3736671A1/en
Priority to CN201980000325.0A priority patent/CN111919193B/zh
Priority to US16/823,320 priority patent/US11093073B2/en
Publication of WO2020181404A1 publication Critical patent/WO2020181404A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Definitions

  • the embodiments of the present application relate to the field of touch technology, and in particular to a touch chip, a touch detection method, a touch detection system, and an electronic device.
  • some conductive electrodes in the display system often have a certain distance from some conductive electrodes in the touch detection system, thus forming some specific capacitances.
  • the development trend of lightness and thinness makes the distance between the conductive electrodes of the display system and the touch detection system smaller and smaller, which leads to the larger capacitance value of the capacitor.
  • the distance between the touch sensor in the touch detection system and the display cathode of the display system is only 10um, which is much smaller than the traditional 100um.
  • the capacitance between the display cathode and the touch sensor is lower than that in the traditional situation. By about 10 times, the interference from the display system will greatly affect the sensitivity of touch detection.
  • one of the technical problems solved by the embodiments of the present application is to provide a touch chip, a touch detection method, a touch detection system, and an electronic device to overcome or alleviate the above-mentioned defects in the prior art.
  • the embodiment of the present application provides a touch control chip, which includes a synchronization module, a touch drive module, and a touch detection module.
  • the synchronization module is electrically connected to the display drive chip so that the touch drive module performs touch control. When driving, it has an associated relationship with the display control signal of the display drive chip; the synchronization module is electrically connected to the touch drive module so that the touch drive module drives the touch sensor under the control of the display control signal
  • the touch detection module is electrically connected to the touch sensor, and is used to detect the output signal of the touch sensor to determine the touch position.
  • the touch detection module is further configured to perform adjacent differential processing on the output signal of the touch sensor to determine the touch position.
  • the embodiment of the present application provides a touch detection method, which includes:
  • the synchronization module enables the touch drive module to have an association relationship with the display control signal of the display drive chip when performing touch drive;
  • the touch driving module drives the touch sensor under the control of the display control signal, and the touch detection module detects the output signal of the touch sensor to determine the touch position.
  • the synchronization module causes the touch
  • the control driving module has an association relationship with the display control signal of the display driving chip during touch driving.
  • the synchronization module enables the touch driving module to perform touch driving when the touch driving module performs touch control. When driving, it has a first association relationship with the field synchronization signal, and has a second association relationship with the n line synchronization signals.
  • the touch driving module is further configured to sequentially send m detection codes in a coding cycle to drive one driving channel in the touch sensor;
  • the first correlation is: a frame-field synchronization signal corresponds to a coding cycle, and the time at which the i-th detection code starts to be sent in each coding cycle lags behind the trigger time of the corresponding frame-field synchronization signal;
  • the second correlation is: the time when the qth detection code starts to be sent in each coding cycle is synchronized with the trigger of the jth line synchronization signal in the n line synchronization signals, and the time when the q+1 detection code starts to be sent The point is synchronized with the trigger of the k-th line synchronization signal in the n line synchronization signals, m ⁇ i ⁇ 1, m ⁇ q ⁇ 1, j, k ⁇ n, j ⁇ k.
  • the synchronization module causes the touch
  • the control driving module has an association relationship with the display control signal of the display driving chip when performing touch driving.
  • the synchronization module enables the touch driving module to have a first association relationship with a field synchronization signal when performing touch driving. And it has a third association relationship with the jth row synchronization signal among the n row synchronization signals.
  • the touch driving module is further configured to sequentially send m detection codes in a coding cycle to drive one driving channel in the touch sensor;
  • the first correlation is: a frame-field synchronization signal corresponds to a coding cycle, and the time at which the i-th detection code starts to be sent in each coding cycle lags behind the trigger time of the corresponding frame-field synchronization signal;
  • the third The association relationship is: the time point at which the qth detection code starts to be sent in each coding cycle is synchronized with the triggering of the jth line synchronization signal in the n line synchronization signals; the qth detection code is excluded in each coding cycle The time point when other detection codes start to be sent is synchronized with the clock signal of the touch chip, m ⁇ i ⁇ 1, m ⁇ q ⁇ 1, j ⁇ n.
  • the synchronization module causes the touch drive module to perform touch drive control with the display drive chip
  • the signal having an association relationship specifically includes: the synchronization module causes the touch driving module to have a fourth association relationship with the field synchronization signal when the touch driving module performs touch driving.
  • the touch driving module is further configured to sequentially send m detection codes in a coding cycle to drive one driving channel in the touch sensor;
  • the fourth correlation is: a frame-field synchronization signal corresponds to a coding cycle, and the time at which the i-th detection code starts to be sent in each coding cycle is synchronized with the trigger of the frame-field synchronization signal; correspondingly, each frame The time point at which other detection codes except the i-th detection code in the code cycle start to be sent is synchronized with the clock signal of the touch chip, m ⁇ i ⁇ 1.
  • the synchronization module causes the touch driving module to perform touch control.
  • the display control signal of the display driving chip has an association relationship.
  • the synchronization module makes the touch driving module have a second association relationship with n row synchronization signals during touch driving.
  • the touch driving module is further configured to sequentially send m detection codes in a coding cycle to drive one driving channel in the touch sensor;
  • the touch detection module detecting the output signal of the touch sensor to determine the touch position includes: performing adjacent differential processing on the output signal of the touch sensor to Determine the touch location.
  • An embodiment of the application provides a touch detection system, which includes the touch chip and the touch sensor in any embodiment of the application.
  • An embodiment of the present application provides an electronic device, which includes the touch chip in any embodiment of the present application.
  • the touch drive module is associated with the display control signal of the display drive chip when the touch drive is driven by the synchronization module; and the touch drive module is used in the display
  • the touch sensor is driven under the control of the control signal, and the touch detection module detects the output signal of the touch sensor to determine the touch position, so as to realize the two consecutive frame field synchronization signals and two coding cycles.
  • the detection code and the display control signal have a fixed relationship. Therefore, when the display system displays content, in order to realize the display of a display object, it is usually necessary to display multiple frames of display images. Therefore, the two frames of display images before and after have the same or at least similar interference.
  • the touch drive module Since the touch drive module has an associated relationship with the display control signal of the display drive chip when performing touch drive, if the touch drive module performs touch sensor on the touch sensor when performing the display image display of the two frames before and after, Control drive, the output of the touch sensor will suffer the same or at least similar interference. Therefore, when the touch detection module calculates the touch position, the touch detection module can perform data input to the output of the demodulation unit. Adjacent differential processing eliminates or reduces interference from the display system, thereby improving the signal-to-noise ratio of the touch detection system and further improving the sensitivity of touch detection.
  • FIG. 1 is a schematic structural diagram of a touch detection system in Embodiment 1 of the application;
  • FIG. 2 is a schematic flowchart of a touch detection method in Embodiment 2 of this application;
  • FIG. 3 is a schematic diagram showing a sequence of association relationships in Embodiment 3 of this application.
  • FIG. 4 is a schematic diagram of a sequence showing the association relationship in the fourth embodiment of the application.
  • FIG. 5 is a schematic diagram of a sequence showing the association relationship in Embodiment 5 of this application.
  • FIG. 6 is a schematic diagram showing a sequence of association relationships in Embodiment 6 of this application.
  • FIG. 7 is a schematic diagram of a sequence showing the association relationship in Embodiment 7 of this application.
  • FIG. 1 is a schematic structural diagram of the touch detection system in Embodiment 1 of the application; as shown in FIG. 1, it includes: a touch chip and a touch sensor.
  • the touch chip includes: a synchronization module, a touch drive module, and a touch sensor. Control detection module.
  • the synchronization module is electrically connected to the display driving chip so that the touch driving module has an associated relationship with the display control signal of the display driving chip when the touch driving module performs touch driving.
  • the synchronization module is electrically connected to the touch drive module so that the touch drive module drives the touch sensor under the control of the display control signal.
  • the synchronization module is further configured to detect the display control signal of the display drive chip, and if it is detected, transmit the drive control signal to the touch drive module to start the touch drive module to the touch sensor Drive.
  • the display control signal includes a horizontal synchronization signal (Hsync for short in the industry), a vertical synchronization signal (Vsync for short in the industry), a pixel synchronization clock signal (PCLK in the industry for short), and a tearing effect signal (TE for short in the industry). At least one of.
  • the display control signals are not limited to line synchronization signals (Hsync for short in the industry), vertical synchronization signals (Vsync for short in the industry), pixel synchronization clock signals (PCLK in the industry for short), and tearing effect signals.
  • TE in the industry
  • it may also include any other signal related to display control, as long as it can be synchronously associated with the touch drive of the touch drive module.
  • the touch drive module has an associated relationship with the display control signal of the display drive chip when performing touch drive, the noise applied to the touch detection system by the display system including the display drive chip is relatively synchronized.
  • the touch detection module is electrically connected with the touch sensor, and is used for detecting the output signal of the touch sensor to determine the touch position.
  • the touch detection module may specifically include:
  • An analog front-end unit (Analog front-end, AFE for short) is used to filter and/or amplify the detected output signal of the touch sensor;
  • Analog-to-digital sampling unit used to perform analog-to-digital conversion on the output signal of the analog front-end module
  • the data demodulation unit is used to demodulate the output signal of the analog-digital sampling module; the demodulation may specifically be based on quadrature demodulation (I/Q);
  • the position calculation unit is configured to calculate the touch position according to the output signal of the data demodulation module, that is, calculate the touch position according to the demodulation value obtained by the data demodulation unit.
  • the touch detection module including an analog front-end unit, an analog-digital sampling unit, a data demodulation unit, and a position calculation unit are just examples.
  • the touch detection module may only include Part of the circuit units, or may also include more circuit units.
  • the touch drive module has an associated relationship with the display control signal of the display drive chip when performing touch drive, if the touch drive module performs touch sensor on the touch sensor when performing the display image display of the two frames before and after, Control drive, the output of the touch sensor will suffer the same or at least similar interference. Therefore, when the touch detection module calculates the touch position, the touch detection module can compare the output of the touch sensor. Adjacent difference processing eliminates or reduces interference from the display system, thereby improving the signal-to-noise ratio of the touch detection system, and further improving the sensitivity of touch detection.
  • the touch detection module includes the above-mentioned data demodulation unit
  • the output data of the analog-digital sampling unit under the two frames of the display image can be demodulated to obtain demodulated data, and then the demodulated data can be further demodulated.
  • the adjacent difference is performed to eliminate or reduce the interference from the interference system, and the touch position is further calculated according to the demodulated data after the difference.
  • FIG. 2 is a schematic flow chart of the touch detection method in the second embodiment of the application; it includes the following steps:
  • the synchronization module enables the touch driving module to have an association relationship with the display control signal of the display driving chip when performing touch driving;
  • the touch driving module drives the touch sensor under the control of the display control signal, and the touch detection module detects the output signal of the touch sensor to determine the touch position.
  • the touch detection module when the touch detection module detects the output signal of the touch sensor to determine the touch position in step S202, it may specifically perform adjacent differential processing on the output signal of the touch sensor to determine the touch position.
  • the control signal has an association relationship.
  • the 4-code full-drive coding is taken as an example for description, that is, the touch drive unit drives all the drive channels on the touch sensor at the same time, and for each drive channel, one Four detection codes are sent in the coding cycle.
  • the coding method is not particularly limited to 4-code full-drive coding, and the number of detection codes sent in a coding cycle is not particularly limited to 4. In fact, in this application, any coding method is sufficient. , As long as it can be associated with the display control signal.
  • FIG. 3 is a schematic diagram showing the timing of the association relationship in the third embodiment of the application; as shown in FIG. 3, if the display control signal includes a horizontal synchronization signal Hsync, a vertical synchronization signal Vsync, and one frame and vertical synchronization signal Vsync corresponds to n horizontal synchronizations Signal Hsync, the touch drive module has an associated relationship with the display control signal of the display drive chip when the touch drive module is performing touch drive: the touch drive module has a first relationship with the field synchronization signal Vsync when the touch drive is performed Relationship, and has a second association relationship with n line synchronization signals Hsync.
  • the touch driving module sequentially sends m detection codes in a coding cycle to drive one driving channel TX in the touch sensor; then the first association relationship is specifically: one frame field
  • the synchronization signal corresponds to a coding period, and the time at which the i-th detection code starts to be sent in each coding period lags behind the trigger time of the corresponding frame field synchronization signal; the second correlation is: each coding period
  • the time point at which the qth detection code starts to be sent is synchronized with the trigger of the jth line synchronization signal in the n line synchronization signals, and the time point when the q+1th detection code starts to be sent is synchronized with the time point of the n line synchronization signals.
  • a frame and field synchronization signal Vsync corresponds to 4 detection codes. Therefore, for the current frame and field synchronization signal Vsync and the current coding cycle. In other words, in order to realize that the time when the first detection code starts to be sent lags behind the trigger time corresponding to the current frame-field synchronization signal Vsync, the first detection code is sent after a delay time delay from the trigger time of the current frame-field synchronization signal Vsync.
  • the first detection code is synchronized with the triggering of the N1 line synchronization signal Hsync among the n line synchronization signals Hsync, and so on, the first detection code is synchronized with the n lines
  • the trigger of the N1th line synchronization signal Hsync in the signal Hsync is synchronized
  • the second detection code is synchronized with the triggering of the N2th line synchronization signal Hsync in the n line synchronization signals Hsync
  • the third detection code is synchronized with the n lines
  • the fourth detection code is synchronized with the triggering of the N4th line synchronization signal Hsync in the n line synchronization signals Hsync.
  • N1, N2, N3, and N4 are not particularly limited. Under the premise of normal driving of the sensor, as long as it can be ensured that the transmission start time of any detection code in a coding cycle can be synchronized with the triggering of one of the n line synchronization signals Hsync. Further, in order to realize the correlation between the multiple detection codes and the different line synchronization signals Hsync in the n line synchronization signals Hsync in one coding cycle, a counter can be set to count the rising or falling edges of the line synchronization signal Hsync.
  • the first detection code starts to be sent
  • the second detection code starts to be sent.
  • the third detection code starts to be sent when the value reaches the N3th line synchronization signal Hsync
  • the fourth detection code starts to be sent when the count value reaches the N4th line synchronization signal Hsync.
  • next frame of the field synchronization signal Vsync continue to perform coding according to the same coding method, such as 4-code full drive.
  • the correlation between the detection code and the field synchronization signal Vsync and the line synchronization signal Hsync is related to the situation of the current frame field synchronization signal Vsync and the current coding cycle.
  • the first detection code is sent after a delay time delay from the trigger time of the next frame field synchronization signal Vsync.
  • the next frame field synchronization signal Vsync Among the corresponding m detection codes and n horizontal synchronization signals Hsync, the first detection code is synchronized with the triggering of the N1th horizontal synchronization signal Hsync among the n horizontal synchronization signals Hsync, and so on, the first A detection code is synchronized with the triggering of the N1th row synchronization signal Hsync among the n row synchronization signals Hsync, and the second detection code is synchronized with the triggering of the N2th row synchronization signal Hsync among the n row synchronization signals Hsync.
  • the 3 detection codes are synchronized with the triggering of the N3th row synchronization signal Hsync among the n row synchronization signals Hsync, and the 4th detection code is synchronized with the triggering of the N4th row synchronization signal Hsync among the n row synchronization signals Hsync.
  • the detection code has a fixed correlation with the field synchronization signal Vsync and the line synchronization signal Hsync. Therefore, when multiple frames of display images need to be displayed to realize the display of a display object, the two frames before and after the display images will have the same or at least similar interference.
  • the field synchronization signal Vsync Corresponding to the difference between the output data of the touch sensor, for example, the previous frame of the field synchronization signal Vsync corresponds to the output data of the touch sensor as a reference, and the latter frame of the field synchronization signal Vsync corresponds to the output of the touch sensor The data is subtracted from the previous frame field synchronization signal Vsync corresponding to the output data of the touch sensor, so as to realize the above-mentioned adjacent difference.
  • the touch detection module when the touch detection module includes the above-mentioned data demodulation unit, the output data of the touch sensor corresponding to the field synchronization signal Vsync of the front and rear frames can be respectively demodulated to obtain the corresponding demodulated data.
  • the demodulated data corresponding to the signal Vsync is differentiated. Since the touch drive module has an associated relationship with the display control signal of the display drive chip when performing touch drive, if the touch drive module performs touch sensor on the touch sensor when performing the display image display of the two frames before and after, Control drive, the output of the touch sensor will suffer the same or at least similar interference. Therefore, when the touch detection module calculates the touch position, the touch detection module can perform data input to the output of the demodulation unit. Adjacent differential processing eliminates or reduces interference from the display system, thereby improving the signal-to-noise ratio of the touch detection system and further improving the sensitivity of touch detection.
  • Fig. 4 is a schematic diagram showing the timing of the association relationship in the fourth embodiment of the application; as shown in Fig. 4, the schematic diagram of the timing principle in Fig. 4 is the same as that of the third embodiment of Fig. 3, and the difference from the third embodiment is that the detection code
  • the corresponding waveform is a rectangular wave, not a sine wave.
  • the frequency of the waveform of the detection code is the same as the frequency of the Hsync of the horizontal synchronization signal, and the duty ratio is the same.
  • the waveform corresponding to the detection code can be any waveform that can drive the code, for example, it can also be a triangle wave, etc., and its frequency and duty cycle can be the same as or different from the horizontal synchronization signal Hsync.
  • one frame field synchronization signal and its corresponding n line synchronization signals are shown in the following FIGS. 5-7. If the one frame field synchronization signal is the current frame field synchronization signal, the situation of the next frame field synchronization signal is the same as the situation of the current frame field synchronization signal.
  • FIG. 5 is a schematic diagram of a sequence showing the association relationship in Embodiment 5 of this application.
  • the touch drive module performs touch drive
  • the correlation relationship with the display control signal of the display driving chip is: the touch driving module has a first correlation relationship with the field synchronization signal Vsync during touch driving, and is related to the jth row of the n row synchronization signals Hsync.
  • the synchronization signal Hsync has a third correlation.
  • the touch drive module sequentially sends m detection codes in one coding cycle to drive one drive channel TX in the touch sensor;
  • the first correlation is: one frame of field synchronization signal corresponds to A coding cycle, the time at which the i-th detection code starts to be sent in each coding cycle lags behind the trigger time of the corresponding frame field synchronization signal;
  • the third correlation is: the qth detection code in each coding cycle The time point when each detection code starts to be sent is synchronized with the triggering of the jth line synchronization signal in the n line synchronization signals; the time point when the other detection codes except the qth detection code start to be sent in each coding cycle is the same as the trigger
  • the clock signal of the control chip is synchronized, m ⁇ i ⁇ 1, m ⁇ q ⁇ 1, j ⁇ n.
  • the time point at which other detection codes except the qth detection code start to be sent in each coding cycle can be synchronized with the clock signal of the touch chip by the synchronization module, or may be based on the touch chip
  • the clock module is implemented.
  • i can be equal to q, or i can not be equal to q.
  • a frame and field synchronization signal Vsync corresponds to 4 detection codes. Therefore, for the current frame and field synchronization signal Vsync and the current coding cycle. In other words, in order to realize that the time when the first detection code starts to be sent lags behind the trigger time corresponding to the current frame-field synchronization signal Vsync, the first detection code is sent after a delay time delay from the trigger time of the frame-field synchronization signal Vsync.
  • the first detection code is synchronized with the triggering of the N1th horizontal synchronization signal Hsync among the n horizontal synchronization signals Hsync
  • the second detection code, the third detection code, and the third The 4 detection codes are synchronized with the triggering of the clock signal of the touch chip.
  • N1 is not particularly limited, and it is on the premise that the touch sensor can be driven normally. As long as it can be ensured that the transmission start time of the first detection code in a coding cycle can be synchronized with the triggering of one of the n horizontal synchronization signals Hsync, and the remaining detection codes can be synchronized with the touch chip The trigger of the clock signal can be synchronized.
  • next frame of the field synchronization signal Vsync continue to perform coding according to the same coding method, such as 4-code full drive.
  • the correlation between the detection code and the field synchronization signal Vsync and the line synchronization signal Hsync is related to the current
  • the frame and field synchronization signal Vsync is the same as in the current coding cycle, that is, for the corresponding m detection codes and n line synchronization signals Hsync, the time when the first detection code starts to be sent lags behind the corresponding current frame and field synchronization
  • the trigger time of the signal Vsync, the first detection code is sent after a delay time delay from the trigger time of the field synchronization signal Vsync of one frame, and at the same time, the first detection code and the n line synchronization signals Hsync
  • the principle of eliminating interference from the display system in this embodiment is similar to the embodiment shown in FIG. 3. However, for each coding cycle and each frame and field synchronization signal Vsync and its corresponding n line synchronization signals Hsync, since the first detection code in the m detection codes is respectively related to the frame and field synchronization signals Vsync, n One of the horizontal synchronization signals Hsync has an association relationship, and the remaining detection code has an association relationship with the clock signal of the touch chip, which can make the implementation cost of the solution lower.
  • FIG. 6 is a schematic diagram showing a sequence of association relationships in Embodiment 6 of this application.
  • the touch drive module has an association relationship with the display control signal of the display drive chip when the touch drive module performs touch drive: the touch drive module There is a fourth association relationship with the field synchronization signal Vsync during touch driving.
  • the touch driving module sequentially sends m detection codes in a coding cycle to drive one driving channel TX in the touch sensor;
  • the fourth correlation is: a frame field synchronization signal Vsync
  • the time when the i-th detection code starts to be sent in each coding cycle is synchronized with the triggering of the one-frame field synchronization signal Vsync; correspondingly, except for the i-th detection code in each coding cycle
  • the time point when the other detection codes start to be sent is synchronized with the clock signal of the touch chip, m ⁇ i ⁇ 1.
  • the synchronization between the time point when the i-th detection code starts to be sent in each coding cycle and the clock signal of the touch chip can be realized by the synchronization module, or can be realized based on the clock module of the touch chip.
  • a frame and field synchronization signal Vsync corresponds to 4 detection codes. Therefore, for the current frame and field synchronization signal Vsync and the current coding cycle For example, the time when the first detection code starts to be sent is synchronized with the trigger of the current frame field synchronization signal Vsync, and the second detection code, the third detection code, and the fourth detection code are synchronized with The trigger synchronization of the clock signal of the touch chip is synchronized.
  • next frame of the field synchronization signal Vsync continue to perform coding according to the same coding method, such as 4-code full drive.
  • the correlation between the detection code and the field synchronization signal Vsync is the same as in the case of the current frame field synchronization signal Vsync and the current coding cycle, that is, for For the next frame field synchronization signal Vsync, the time when the first detection code of the m detection codes starts to be sent is synchronized with the trigger of the current frame field synchronization signal Vsync, and the second detection code and the third detection code The detection code and the fourth detection code are synchronized with the triggering of the clock signal of the touch chip.
  • the principle of eliminating interference from the display system in this embodiment is similar to the embodiment shown in FIG. 3, but for each coding period and each frame of the field synchronization signal Vsync and its corresponding n line synchronization signals Hsync , Because the first detection code of the m detection codes is only associated with the frame and field synchronization signal Vsync, and the remaining detection codes are associated with the clock signal of the touch chip, because it is relatively simple to implement, it can further reduce The cost of implementing the program. Of course, one of the m detection codes can also be selected to have an association relationship with the frame and field synchronization signal Vsync.
  • FIG. 7 is a schematic diagram of a sequence showing the association relationship in Embodiment 7 of this application.
  • the touch drive module has the same value as the display control signal of the display drive chip during touch drive.
  • the association relationship is: the touch driving module has a second association relationship with the n row synchronization signals Hsync when performing touch driving.
  • n horizontal synchronization signals Hsync correspond to A coding cycle
  • the time point at which the i-th detection code starts to be sent in each coding cycle is synchronized with the triggering of the j-th line synchronization signal Hsync in the n line synchronization signals Hsync, and the i+1th detection code starts to be sent
  • the time point of is synchronized with the triggering of the k-th line synchronization signal Hsync in the n line synchronization signals Hsync, i ⁇ m, j, k ⁇ n, j ⁇ k.
  • a counter HsyncCNT may be configured to count the rising or falling edges of the horizontal synchronization signal Hsync.
  • the touch drive unit is controlled to touch
  • the control sensor sends a detection code. Since the number n of line synchronization signals Hsync corresponding to a frame and field synchronization signal Vsync is fixed, for the current frame synchronization signal, whenever the count value of the counter Hsync CNT reaches n, the counter Hsync CNT is cleared to zero.
  • Counting is performed in the next frame of the synchronization signal, and when the count value meets the aforementioned second association relationship again, the touch drive unit is controlled to send the detection code to the touch sensor again.
  • the detection code only has a fixed relationship with the line synchronization signal Hsync, which can ensure that the cost of implementation of the solution is low, such as display driver chips and touch Only one data communication line is needed between the control chips.
  • the association relationship between n line synchronization signals and m detection codes preferably ensures that the transmission of m detection codes can be completed in one frame and field synchronization signal corresponding to n line synchronization signals. That is, it can ensure that the cost of implementation of the solution is low.
  • the transmission of m detection codes in one coding cycle can also be allocated to two adjacent frame field synchronization signals, that is, one coding cycle corresponds to two frame field synchronization signals. Therefore, when performing the above-mentioned differential processing When the count value of the above counter reaches n, it can indicate that it corresponds to a frame field synchronization signal. Therefore, similarly, it can be understood as the corresponding demodulation value of the data demodulation unit in the case of every two frame field synchronization signals before and after Differentiate between them to eliminate or reduce interference from the display system.
  • An embodiment of the application provides an electronic device, which includes the touch detection system in any embodiment of the application.
  • the electronic devices in the embodiments of this application exist in various forms, including but not limited to:
  • Mobile communication equipment This type of equipment is characterized by mobile communication functions, and its main goal is to provide voice and data communications.
  • Such terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.
  • Ultra-mobile personal computer equipment This type of equipment belongs to the category of personal computers, has calculation and processing functions, and generally also has mobile Internet features.
  • Such terminals include: PDA, MID and UMPC devices, such as iPad.
  • Portable entertainment equipment This type of equipment can display and play multimedia content.
  • Such devices include: audio, video players (such as iPod), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.
  • Server A device that provides computing services.
  • the composition of a server includes a processor 810, hard disk, memory, system bus, etc.
  • the server is similar to a general computer architecture, but because it needs to provide highly reliable services, it has High requirements in terms of performance, reliability, security, scalability, and manageability.
  • a programmable logic device Programmable Logic Device, PLD
  • FPGA Field Programmable Gate Array
  • HDL Hardware Description Language
  • ABEL Advanced Boolean Expression Language
  • AHDL Altera Hardware Description Language
  • HDCal JHDL
  • Lava Lava
  • Lola MyHDL
  • PALASM RHDL
  • VHDL Very-High-Speed Integrated Circuit Hardware Description Language
  • Verilog Verilog
  • the controller can be implemented in any suitable manner.
  • the controller can take the form of, for example, a microprocessor or a processor and a computer-readable medium storing computer-readable program codes (such as software or firmware) executable by the (micro)processor. , Logic gates, switches, application specific integrated circuits (ASICs), programmable logic controllers and embedded microcontrollers.
  • controllers include but are not limited to the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicon Labs C8051F320, the memory controller can also be implemented as a part of the memory control logic.
  • controller in addition to implementing the controller in a purely computer-readable program code manner, it is entirely possible to program the method steps to make the controller use logic gates, switches, application specific integrated circuits, programmable logic controllers and embedded The same function can be realized in the form of a microcontroller, etc. Therefore, such a controller can be regarded as a hardware component, and the devices included in it for implementing various functions can also be regarded as a structure within the hardware component. Or even, the device for realizing various functions can be regarded as both a software module for realizing the method and a structure within a hardware component.
  • a typical implementation device is a computer.
  • the computer may be, for example, a personal computer, a laptop computer, a cell phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or Any combination of these devices.
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
  • the computing device includes one or more processors (CPU), input/output interfaces, network interfaces, and memory.
  • processors CPU
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer-readable instructions, data structures, program modules, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • This application may be described in the general context of computer-executable instructions executed by a computer, such as program modules.
  • program modules include routines, programs, objects, components, data structures, etc. that perform specific transactions or implement specific abstract data types.
  • This application can also be practiced in distributed computing environments. In these distributed computing environments, remote processing devices connected through a communication network execute transactions.
  • program modules can be located in local and remote computer storage media including storage devices.

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Abstract

一种触控芯片、触控检测方法、触控检测系统及电子设备，所述触控芯片包括：同步模块、触控驱动模块、触控检测模块，所述同步模块与显示驱动芯片电连接以使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；所述同步模块与所述触控驱动模块电连接以使所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动；所述触控检测模块与所述触控传感器电连接，用于对所述触控传感器的输出信号进行检测以确定触控位置。触控检测系统消除或者减小了来自显示系统的干扰，从而提高触控检测系统的信噪比，进一步提高了触控检测的灵敏度。

Description

触控芯片、触控检测方法、触控检测系统及电子设备 技术领域
本申请实施例涉及触控技术领域，尤其涉及一种触控芯片、触控检测方法、触控检测系统及电子设备。
背景技术
对于同时具有显示系统和触控检测系统的电子设备来说，显示系统中的某些导电电极常常会与触控检测系统中的某些导电电极由于具有一定的距离，从而形成了一些特定电容，尤其对于便携式移动终端来说，轻薄化的发展趋势，使得显示系统和触控检测系统的导电电极之间的距离越来越小，由此导致该电容的电容值往往较大，比如在一些便携式移动终端上，触控检测系统中的触控传感器与显示系统的显示阴极的距离只有10um，远小于传统的100um左右，由此导致显示阴极和触控传感器之间的电容相对于传统情形下会变大约10倍，由此导致来自显示系统的干扰会极大的影响触控检测的灵敏度。
发明内容
有鉴于此，本申请实施例所解决的技术问题之一在于提供一种触控芯片、触控检测方法、触控检测系统及电子设备，用以克服或者缓解现有技术中的上述缺陷。
本申请实施例提供了一种触控芯片，其包括：同步模块、触控驱动模块、触控检测模块，所述同步模块与显示驱动芯片电连接以使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；所述同步模块与所述触控驱动模块电连接以使所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动；所述触控检测模块与所述触控传感器电连接，用于对所述触控传感器的输出信号进行检测以确定触控位置。
可选地，在本申请的任一实施例中，所述触控检测模块进一步用于对所述触控传感器的输出信号进行相邻差分处理以确定触控位置。
本申请实施例提供一种触控检测方法，其包括：
同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控 制信号具有关联关系；
所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动，以及触控检测模块对触控传感器的输出信号进行检测以确定触控位置。
可选地，在本申请的任一实施例中，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时所述触控驱动模块在进行触控驱动时与场同步信号具有第一关联关系，且与n个行同步信号具有第二关联关系。
可选地，在本申请的任一实施例中，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；则所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第二关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第q+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，m≥i≥1，m≥q≥1，j、k≤n，j＜k。
可选地，在本申请的任一实施例中，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与场同步信号具有第一关联关系，且与n个行同步信号中的第j个行同步信号具有第三关联关系。
可选地，在本申请的任一实施例中，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第三关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步；每个打码周期内除第q个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1，m≥q≥1，j≤n。
可选地，在本申请的任一实施例中，若所述显示控制信号为场同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示 控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与场同步信号具有第四关联关系。
可选地，在本申请的任一实施例中，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第四关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间与所述一帧场同步信号的触发同步；对应地，每个打码周期内除第i个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1。
可选地，在本申请的任一实施例中，若所述显示控制信号为对应一帧场同步信号的n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与n个行同步信号具有第二关联关系。
可选地，在本申请的任一实施例中，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第二关联关系：n个行同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第i+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，i≤m，j、k≤n，j＜k。
可选地，在本申请的任一实施例中，触控检测模块对触控传感器的输出信号进行检测以确定触控位置，包括：对所述触控传感器的输出信号进行相邻差分处理以确定触控位置。
本申请实施例提供一种触控检测系统，其包括本申请任一实施例中的触控芯片以及触控传感器。
本申请实施例提供一种电子设备，其包括本申请任一实施例中的触控芯片。
本申请实施例提供的技术方案中，由于通过同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；以及所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动，以及触控检测模块对触控传感器的输出信号进行检测以确定触控位置，从而实现了在连续两帧场同步信号和两个打码周期来说，检测码与显示控制信号具有固定的关联关系。因此显示系统显示内容时，为了实现对一个显示对象的显示，通常需要显示多帧显示图像，因此，前后两帧显示图像具有相同或者至少相似的干扰。由于所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有 关联关系，因此，如果所述触控驱动模块在进行前后两帧显示图像显示时分别对触控传感器实施触控驱动，则对触控传感器的输出就会受到相同或者至少相似的干扰，因此，在所述触控检测模块在计算触控位置时，触控检测模块可以对数据进解调单元的输出进行相邻差分处理，从而消除或者减小了来自显示系统的干扰，从而提高了触控检测系统的信噪比，进一步提高了触控检测的灵敏度。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本申请实施例的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1为本申请实施例一中触控检测系统的结构示意图；
图2为本申请实施例二中触控检测方法的流程示意图；
图3为本申请实施例三中体现关联关系的时序示意图；
图4为本申请实施例四中体现关联关系的时序示意图；
图5为本申请实施例五中体现关联关系的时序示意图；
图6为本申请实施例六中体现关联关系的时序示意图；
图7为本申请实施例七中体现关联关系的时序示意图。
具体实施方式
实施本申请实施例的任一技术方案必不一定需要同时达到以上的所有优点。
下面结合本申请实施例附图进一步说明本申请实施例具体实现。
图1为本申请实施例一中触控检测系统的结构示意图；如图1所示，其包括：触控芯片以及触控传感器，所述触控芯片包括：同步模块、触控驱动模块、触控检测模块。
其中，所述同步模块与显示驱动芯片电连接以使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系。所述同步模块与所述触控驱动模块电连接以使所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动。具体地，所述同步模块进一步用于对所述显示驱动芯片的显示控制信号进行检测，若检测到，则向所述触控驱动模块传输驱动控制信号启动所述触控驱动模块对触控传感器进行驱动。
本实施例中，所述显示控制信号包括行同步信号(业界简称Hsync)、场 同步信号(业界简称Vsync)、像素点同步时钟信号(业界简称PCLK)、撕裂效应信号(业界简称TE)中的至少一种。当然，依据本申请实施例的原理，显示控制信号并非只局限为行同步信号(业界简称Hsync)、场同步信号(业界简称Vsync)、像素点同步时钟信号(业界简称PCLK)、撕裂效应信号(业界简称TE)，也可以包括其他任意跟显示控制有关的信号，只要可以同步关联与所述触控驱动模块的触控驱动即可。只要所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系，使得包括所述显示驱动芯片的显示系统施加给所述触控检测系统的噪声相对同步。
所述触控检测模块与所述触控传感器电连接，用于对所述触控传感器的输出信号进行检测以确定触控位置。其中，触控检测模块具体可以包括：
模拟前端单元(Analog front-end，简称AFE)，用于对检测到的所述触控传感器的输出信号进行滤波和/或放大处理；
模数采样单元(A/D采样单元)，用于对模拟前端模块的输出信号进行模数转换；
数据解调单元，用于对模数采样模块的输出信号进行解调处理；所述解调具体可以依据正交解调(I/Q)；
位置计算单元，用于根据数据解调模块的输出信号计算触控位置，即根据数据解调单元得到的解调值计算触控位置。
当然，此处说明的是，本实施例中，触控检测模块包括模拟前端单元、模数采样单元、数据解调单元、位置计算单元仅仅是示例，实际上触控检测模块也可以只包括其中的部分电路单元，或者也可以包括更多的电路单元。
本实施例中，显示系统显示内容时，为了实现对一个显示对象的显示，通常需要显示多帧显示图像，因此，前后两帧显示图像具有相同或者至少相似的干扰。由于所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系，因此，如果所述触控驱动模块在进行前后两帧显示图像显示时分别对触控传感器实施触控驱动，则对触控传感器的输出就会受到相同或者至少相似的干扰，因此，在所述触控检测模块在计算触控位置时，触控检测模块可以对触控传感器的输出进进行相邻差分处理，从而消除或者减小了来自显示系统的干扰，从而提高了触控检测系统的信噪比，进一步提高了触控检测的灵敏度。
进一步地，如前所述，如果触控检测模块包括上述数据解调单元，则可以 对前后两帧显示图像下模数采样单元的输出数据进行解调得到解调数据，再进一步对解调数据进行相邻差分，从而消除或者减小了来自干扰系统的干扰，再进一步根据差分后的解调数据计算触控位置。
对应上述触控检测系统，如图2所示，为本申请实施例二中触控检测方法的流程示意图；其包括如下步骤：
S201、同步模块使触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；
S202、所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动，以及触控检测模块对触控传感器的输出信号进行检测以确定触控位置。
如前所述，步骤S202中触控检测模块对触控传感器的输出信号进行检测以确定触控位置时，具体可以对所述触控传感器的输出信号进行相邻差分处理以确定触控位置。
下述以提供了几种具体的实施例，以示例性地说明在上述触控检测系统和触控检测方法中如何具体实现所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系。
另外，下述实施例中，以4码全驱动打码为例进行说明，即：触控驱动单元对触控传感器上所有的驱动通道同时进行驱动，而对于其中每一驱动通道来说，一个打码周期发送4个检测码。当然，打码方式并非特别限定为4码全驱动打码，而一个打码周期内发送的检测码也并非特别限定为4个，实际上，在本申请中，任一的打码方式即可，只要可以实现与显示控制信号具有关联关系即可。
图3为本申请实施例三中体现关联关系的时序示意图；如图3所示，若所述显示控制信号包括行同步信号Hsync、场同步信号Vsync且一帧场同步信号Vsync对应n个行同步信号Hsync，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与场同步信号Vsync具有第一关联关系，且与n个行同步信号Hsync具有第二关联关系。
进一步地，假设所述触控驱动模块在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道TX进行驱动；则所述第一关联关系具体为 为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第二关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第q+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，m≥i≥1，m≥q≥1，j、k≤n，j＜k。此处需要说明的是，i可以等于q，也可以不等于q。
示例性地，若采用上述4码全驱动方式进行打码的话，则m＝4，即一帧场同步信号Vsync对应有4个检测码，因此，对于当前帧场同步信号Vsync以及当前打码周期来说，为了实现第1个检测码开始发送的时间滞后于对应所述当前帧场同步信号Vsync的触发时间，在当前帧场同步信号Vsync的触发时间起经过一段延迟时间delay之后发送第1个检测码，与此同时，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，以此类推，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，而第2个检测码与n个行同步信号Hsync中的第N2个行同步信号Hsync的触发同步，第3个检测码与n个行同步信号Hsync中的第N3个行同步信号Hsync的触发同步，第4个检测码与n个行同步信号Hsync中的第N4个行同步信号Hsync的触发同步。
本实施例中，上述一个打码周期内多个检测码与n个行同步信号Hsync中不同行同步信号Hsync的关联关系中，N1、N2、N3、N4并非特别限定，在能实现对触控传感器的正常驱动的前提下，只要可以保证一个打码周期内任一个检测码的发送开始时间能与到n个行同步信号Hsync中的一个行同步信号Hsync的触发同步即可。进一步地，为了实现上述一个打码周期内多个检测码与n个行同步信号Hsync中不同行同步信号Hsync的关联关系，可以通过设置一计数器，通过统计行同步信号Hsync的上升沿或者下降沿的个数，当计数值到第N1个行同步信号Hsync时开始发送所述第1个检测码，当计数值到第N2个行同步信号Hsync时开始发送所述第2个检测码，当计数值到第N3个行同步信号Hsync时开始发送所述第3个检测码，当计数值到第N4个行同步信号Hsync时开始发送所述第4个检测码。此处，推而光之，即相当于通过设置一计数器，对所述行同步信号Hsync的个数进行统计。
对于下一帧场同步信号Vsync来说，继续按照相同的打码方式进行打码，比如4码全驱动。而对于下一帧场同步信号Vsync和下一打码周期之间来说，其中检测码与场同步信号Vsync、行同步信号Hsync的关联关系与在当前帧场 同步信号Vsync和当前打码周期情形下相同，即对于下一帧场同步信号Vsync来说，在下一帧场同步信号Vsync的触发时间起经过一段延迟时间delay之后发送第1个检测码，与此同时，下一帧场同步信号Vsync对应的m个检测码以及n个行同步信号Hsync中，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，以此类推，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，而第2个检测码与n个行同步信号Hsync中的第N2个行同步信号Hsync的触发同步，第3个检测码与n个行同步信号Hsync中的第N3个行同步信号Hsync的触发同步，第4个检测码与n个行同步信号Hsync中的第N4个行同步信号Hsync的触发同步。
综上由此可见，在连续两帧场同步信号Vsync和两个打码周期来说，检测码与场同步信号Vsync、行同步信号Hsync具有固定的关联关系。因此，当实现对一个显示对象的显示需要显示多帧显示图像时，前后两帧显示图像就会具有相同或者至少相似的干扰，在进行触控位置计算时，通过对前后两帧场同步信号Vsync分别对应触控感应器的输出数据之间进行差分，比如以前一帧场同步信号Vsync分别对应触控感应器的输出数据为基准，而用后一帧场同步信号Vsync对应触控感应器的输出数据减去前一帧场同步信号Vsync对应触控感应器的输出数据，从而实现上述相邻差分。此处，当触控检测模块包括上述数据解调单元的时候，可以对前后两帧场同步信号Vsync对应触控感应器的输出数据分别进行解调得到对应的解调数据，前后两帧场同步信号Vsync对应的解调数据之间进行差分。由于所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系，因此，如果所述触控驱动模块在进行前后两帧显示图像显示时分别对触控传感器实施触控驱动，则对触控传感器的输出就会受到相同或者至少相似的干扰，因此，在所述触控检测模块在计算触控位置时，触控检测模块可以对数据进解调单元的输出进行相邻差分处理，从而消除或者减小了来自显示系统的干扰，从而提高了触控检测系统的信噪比，进一步提高了触控检测的灵敏度。
图4为本申请实施例四中体现关联关系的时序示意图；如图4所示，图4中的时序原理示意图与上述图3实施例三的相同，与上述实施例三不同的是，检测码对应的波形为矩形波，而并非为正弦波。检测码的波形的频率与行同步信号的Hsync的频率相同，占空比相同。实际上，检测码对应的波形可以为任 一可实现驱动打码的波形，比如还可以为三角波等，其频率和占空比可以与行同步信号Hsync相同或者不同。
为了清楚的说明关联关系，下述图5-图7中只示意出了一帧场同步信号及其对应的n个行同步信号。如果该一帧场同步信号为当前帧场同步信号的话，下一帧场同步信号的情形与当前帧场同步信号的情形相同。
图5为本申请实施例五中体现关联关系的时序示意图。如图5所示，若所述显示控制信号包括行同步信号Hsync、场同步信号Vsync且一帧场同步信号Vsync对应n个行同步信号Hsync，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与场同步信号Vsync具有第一关联关系，且与n个行同步信号Hsync中的第j个行同步信号Hsync具有第三关联关系。
进一步地，假设所述触控驱动模块在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道TX进行驱动；所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第三关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步；每个打码周期内除第q个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1，m≥q≥1，j≤n。本实施例中，每个打码周期内除第q个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步可以通过所述同步模块来实现，也可以基于触控芯片的时钟模块来实现。如前所述，i可以等于q，i也可以不等于q。
示例性地，若采用上述4码全驱动方式进行打码的话，则m＝4，即一帧场同步信号Vsync对应有4个检测码，因此，对于当前帧场同步信号Vsync以及当前打码周期来说，为了实现第1个检测码开始发送的时间滞后于对应所述当前帧场同步信号Vsync的触发时间，在一帧场同步信号Vsync的触发时间起经过一段延迟时间delay之后发送第1个检测码，与此同时，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，而所述第2个检测码、第3个检测码、第4个检测码与触控芯片的时钟信号的触发同步。
本实施例中，上述一个打码周期内多个检测码与n个行同步信号Hsync中不同行同步信号Hsync的关联关系中，N1并非特别限定，在能实现对触控传 感器的正常驱动的前提下，只要可以保证一个打码周期内第1个检测码的发送开始时间能与到n个行同步信号Hsync中的一个行同步信号Hsync的触发同步即可，而剩余检测码能与触控芯片的时钟信号的触发同步即可。
对于下一帧场同步信号Vsync来说，继续按照相同的打码方式进行打码，比如4码全驱动。而对于下一帧场同步信号Vsync和下一打码周期之间来说，对于下一帧场同步信号Vsync来说，其中检测码与场同步信号Vsync、行同步信号Hsync的关联关系与在当前帧场同步信号Vsync和当前打码周期情形下相同，即其对应的m个检测码以及n个行同步信号Hsync来说，第1个检测码开始发送的时间滞后于对应所述当前帧场同步信号Vsync的触发时间，在一帧场同步信号Vsync的触发时间起经过一段延迟时间delay之后发送第1个检测码，与此同时，所述第1个检测码与n个行同步信号Hsync中的第N1个行同步信号Hsync的触发同步，而所述第2个检测码、第3个检测码、第4个检测码与触控芯片的时钟信号的触发同步。
本实施例中能消除来自显示系统的干扰的原理类似上述图3所示的实施例。但是，对于每个打码周期和每帧场同步信号Vsync以及其对应的n个行同步信号Hsync来说，由于m个检测码中的第1个检测码分别与帧场同步信号Vsync、n个行同步信号Hsync中的一个行同步信号Hsync具有关联关系，而剩余检测码与触控芯片的时钟信号具有关联关系，由此可以使得方案的实施成本较低。
图6为本申请实施例六中体现关联关系的时序示意图。如图6所示，若所述显示控制信号为场同步信号Vsync，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与场同步信号Vsync具有第四关联关系。
进一步地，假设所述触控驱动模块在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道TX进行驱动；所述第四关联关系为：一帧场同步信号Vsync对应一个打码周期，每个打码周期内第i个检测码开始发送的时间与所述一帧场同步信号Vsync的触发同步；对应地，每个打码周期内除第i个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1。本实施例中，每个打码周期内第i个检测码开始发送的时间点与触控芯片的时钟信号同步可以通过所述同步模块来实现，也可以基于触控芯片的时钟模块来实现。
示例性地，若采用上述4码全驱动方式进行打码的话，则m＝4，即一帧场 同步信号Vsync对应有4个检测码，因此，对于当前帧场同步信号Vsync以及当前打码周期来说，示例性地，第1个检测码开始发送的时间与所述当前帧场同步信号Vsync的触发同步，而所述第2个检测码、第3个检测码、第4个检测码与触控芯片的时钟信号的触发同步。
对于下一帧场同步信号Vsync来说，继续按照相同的打码方式进行打码，比如4码全驱动。而对于下一帧场同步信号Vsync和下一打码周期之间来说，其中检测码与场同步信号Vsync的关联关系与在当前帧场同步信号Vsync和当前打码周期情形下相同，即对于下一帧场同步信号Vsync来说，m个检测码中的第1个检测码开始发送的时间与所述当前帧场同步信号Vsync的触发同步，而所述第2个检测码、第3个检测码、第4个检测码与触控芯片的时钟信号的触发同步。
此处需要说明的是，在其他实施例中，也可以是所述第2个检测码、第3个检测码、第4个检测码中的任意一个检测码开始发送的时间与所述当前帧场同步信号Vsync的触发同步。
本实施例中能消除来自显示系统的干扰的原理类似上述图3所示的实施例，但由于对于每个打码周期和每帧场同步信号Vsync以及其对应的n个行同步信号Hsync来说，由于m个检测码中的第1个检测码只与帧场同步信号Vsync具有关联关系，而剩余检测码与触控芯片的时钟信号具有关联关系，由于实施起来较为简单，因此可以进一步降低了方案实施的成本。当然，也可以从m个检测码中任选一个检测码与帧场同步信号Vsync具有关联关系。
图7为本申请实施例七中体现关联关系的时序示意图。如图7所示，若所述显示控制信号为对应一帧场同步信号Vsync的n个行同步信号Hsync，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与n个行同步信号Hsync具有第二关联关系。
进一步地，若所述触控驱动模块在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道TX进行驱动；所述第二关联关系：n个行同步信号Hsync对应一个打码周期，每个打码周期内第i个检测码开始发送的时间点与n个行同步信号Hsync中的第j个行同步信号Hsync的触发同步，第i+1个检测码开始发送的时间点与n个行同步信号Hsync中的第k个行同步信号Hsync的触发同步，i≤m，j、k≤n，j＜k。
具体地，本实施例中，可以配置一计数器Hsync CNT，对行同步信号Hsync的上升沿或者下降沿进行计数，当计数值满足上述所述第二关联关系时，即控制触控驱动单元向触控传感器发送检测码。由于一帧场同步信号Vsync对应的行同步信号Hsync的个数n是固定的，因此，对于当前帧同步信号来说，每当计数器Hsync CNT的计数值达到n时，计数器Hsync CNT清零，以在下一帧同步信号进行计数，当计数值再次满足上述所述第二关联关系时，即控制触控驱动单元再次向触控传感器发送检测码。由此保证在连续两帧场同步信号Vsync和两个打码周期来说，检测码只与行同步信号Hsync具有固定的关联关系，从而可以保证方案实施的成本较低，比如显示驱动芯片和触控芯片之间只要一根数据通信线即可。
另外，需要说明的是，在上述实施例中，n个行同步信号与m个检测码的关联关系优选保证能在n个行同步信号对应的一帧场同步信号中完成m个检测码的发送即可，从而可以保证方案实施的成本较低。但实际上，一个打码周期内的m个检测码的发送也可以分配在相邻两帧场同步信号中，即一个打码周期对应两帧场同步信号，由此，在进行上述差分处理时，当上述计数器的计数值达到n时，则可表明对应一帧场同步信号，因此，类似地，则可以理解为数据解调单元在前后每两帧场同步信号情形下各自对应的解调值之间进行差分，从而消除或者减小来自显示系统的干扰。
本申请实施例提供一种电子设备，其包括本申请任一实施例中的触控检测系统。
本申请实施例的电子设备以多种形式存在，包括但不限于:
(1)移动通信设备:这类设备的特点是具备移动通信功能，并且以提供话音、数据通信为主要目标。这类终端包括:智能手机(例如iPhone)、多媒体手机、功能性手机，以及低端手机等。
(2)超移动个人计算机设备:这类设备属于个人计算机的范畴，有计算和处理功能，一般也具备移动上网特性。这类终端包括:PDA、MID和UMPC设备等，例如iPad。
(3)便携式娱乐设备:这类设备可以显示和播放多媒体内容。该类设备包括:音频、视频播放器(例如iPod)，掌上游戏机，电子书，以及智能玩具和便携式车载导航设备。
(4)服务器:提供计算服务的设备，服务器的构成包括处理器810、硬盘、内 存、系统总线等，服务器和通用的计算机架构类似，但是由于需要提供高可靠的服务，因此在处理能力、稳定性、可靠性、安全性、可扩展性、可管理性等方面要求较高。
(5)其他具有数据交互功能的电子装置。
至此，已经对本主题的特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作可以按照不同的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序，以实现期望的结果。在某些实施方式中，多任务处理和并行处理可以是有利的。
在20世纪90年代，对于一个技术的改进可以很明显地区分是硬件上的改进(例如，对二极管、晶体管、开关等电路结构的改进)还是软件上的改进(对于方法流程的改进)。然而，随着技术的发展，当今的很多方法流程的改进已经可以视为硬件电路结构的直接改进。设计人员几乎都通过将改进的方法流程编程到硬件电路中来得到相应的硬件电路结构。因此，不能说一个方法流程的改进就不能用硬件实体模块来实现。例如，可编程逻辑器件(Programmable Logic Device,PLD)(例如现场可编程门阵列(Field Programmable Gate Array，FPGA))就是这样一种集成电路，其逻辑功能由用户对器件编程来确定。由设计人员自行编程来把一个数字系统“集成”在一片PLD上，而不需要请芯片制造厂商来设计和制作专用的集成电路芯片。而且，如今，取代手工地制作集成电路芯片，这种编程也多半改用“逻辑编译器(logic compiler)”软件来实现，它与程序开发撰写时所用的软件编译器相类似，而要编译之前的原始代码也得用特定的编程语言来撰写，此称之为硬件描述语言(Hardware Description Language，HDL)，而HDL也并非仅有一种，而是有许多种，如ABEL(Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language)等，目前最普遍使用的是VHDL(Very-High-Speed Integrated Circuit Hardware Description Language)与Verilog。本领域技术人员也应该清楚，只需要将方法流程用上述几种硬件描述语言稍作逻辑编程并编程到集成电路中，就可以很容易得到实现该逻辑方法流程的硬件电路。
控制器可以按任何适当的方式实现，例如，控制器可以采取例如微处理器 或处理器以及存储可由该(微)处理器执行的计算机可读程序代码(例如软件或固件)的计算机可读介质、逻辑门、开关、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑控制器和嵌入微控制器的形式，控制器的例子包括但不限于以下微控制器：ARC 625D、Atmel AT91SAM、Microchip PIC18F26K20以及Silicone Labs C8051F320，存储器控制器还可以被实现为存储器的控制逻辑的一部分。本领域技术人员也知道，除了以纯计算机可读程序代码方式实现控制器以外，完全可以通过将方法步骤进行逻辑编程来使得控制器以逻辑门、开关、专用集成电路、可编程逻辑控制器和嵌入微控制器等的形式来实现相同功能。因此这种控制器可以被认为是一种硬件部件，而对其内包括的用于实现各种功能的装置也可以视为硬件部件内的结构。或者甚至，可以将用于实现各种功能的装置视为既可以是实现方法的软件模块又可以是硬件部件内的结构。
上述实施例阐明的系统、装置、模块或单元，具体可以由计算机芯片或实体实现，或者由具有某种功能的产品来实现。一种典型的实现设备为计算机。具体的，计算机例如可以为个人计算机、膝上型计算机、蜂窝电话、相机电话、智能电话、个人数字助理、媒体播放器、导航设备、电子邮件设备、游戏控制台、平板计算机、可穿戴设备或者这些设备中的任何设备的组合。
为了描述的方便，描述以上装置时以功能分为各种单元分别描述。当然，在实施本申请时可以把各单元的功能在同一个或多个软件和/或硬件中实现。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备 以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
内存可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。内存是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
本领域技术人员应明白，本申请的实施例可提供为方法、系统或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本申请可以在由计算机执行的计算机可执行指令的一般上下文中描述，例如程序模块。一般地，程序模块包括执行特定事务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构等等。也可以在分布式计算环境中实践本申请，在这些分布式计算环境中，由通过通信网络而被连接的远程处理设备来执行事务。在分布式计算环境中，程序模块可以位于包括存储设备在内的本地和远程计算机存储介质中。
以上所述仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (24)

  1. 一种触控芯片，其特征在于，包括：同步模块、触控驱动模块、触控检测模块，所述同步模块用于与显示驱动芯片电连接，以使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；所述同步模块与所述触控驱动模块电连接，以使所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动；所述触控检测模块用于与所述触控传感器电连接，并对所述触控传感器的输出信号进行检测以确定触控位置。
  2. 根据权利要求1所述的芯片，其特征在于，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与场同步信号具有第一关联关系，且与n个行同步信号具有第二关联关系。
  3. 根据权利要求2所述的芯片，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码，以对触控传感器中的一个驱动通道进行驱动；则所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第二关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第q+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，m≥i≥1，m≥q≥1，j、k≤n，j＜k。
  4. 根据权利要求1所述的芯片，其特征在于，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述触控驱动模块在进行触控驱动时，与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时，与场同步信号具有第一关联关系，且与n个行同步信号中的第j个行同步信号具有第三关联关系。
  5. 根据权利要求4所述的芯片，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第三关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步；每个打码周期内除第q 个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1，m≥q≥1，j≤n。
  6. 根据权利要求1所述的芯片，其特征在于，若所述显示控制信号为场同步信号，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与场同步信号具有第四关联关系。
  7. 根据权利要求6所述的芯片，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第四关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间与所述一帧场同步信号的触发同步；对应地，每个打码周期内除第i个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1。
  8. 根据权利要求1所述的芯片，其特征在于，若所述显示控制信号为对应一帧场同步信号的n个行同步信号，则所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系为：所述触控驱动模块在进行触控驱动时与n个行同步信号具有第二关联关系。
  9. 根据权利要求8所述的芯片，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第二关联关系：n个行同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第i+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，i≤m，j、k≤n，j＜k。
  10. 根据权利要求3或者5或者9所述的芯片，其特征在于，还包括：计数器，用于对所述行同步信号的个数进行实时计数。
  11. 根据权利要求1-10任一项所述的芯片，其特征在于，所述触控检测模块进一步用于对所述触控传感器的输出信号进行相邻差分处理以确定触控位置。
  12. 一种触控检测方法，其特征在于，包括：
    同步模块使触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系；
    所述触控驱动模块在所述显示控制信号的控制下对触控传感器进行驱动，以及触控检测模块对触控传感器的输出信号进行检测以确定触控位置。
  13. 根据权利要求12所述的方法，其特征在于，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时所述触控驱动模块在进行触控驱动时与场同步信号具有第一关联关系，且与n个行同步信号具有第二关联关系。
  14. 根据权利要求13所述的方法，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；则所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第二关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第q+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，m≥i≥1，m≥q≥1，j、k≤n，j＜k。
  15. 根据权利要求12所述的方法，其特征在于，若所述显示控制信号包括行同步信号、场同步信号且一帧场同步信号对应n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与场同步信号具有第一关联关系，且与n个行同步信号中的第j个行同步信号具有第三关联关系。
  16. 根据权利要求15所述的方法，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第一关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间滞后于对应所述一帧场同步信号的触发时间；所述第三关联关系为：每个打码周期内第q个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步；每个打码周期内除第q个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1，m≥q≥1，j≤n。
  17. 根据权利要求13所述的方法，其特征在于，若所述显示控制信号为场同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与场同步信号具有第四关联关系。
  18. 根据权利要求17所述的方法，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第四关联关系为：一帧场同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间与所述一帧场同步信号的触发同步；对应地，每个打码周期内除第i个检测码外的其他检测码开始发送的时间点与触控芯片的时钟信号同步，m≥i≥1。
  19. 根据权利要求13所述的方法，其特征在于，若所述显示控制信号为对应一帧场同步信号的n个行同步信号，则所述同步模块使所述触控驱动模块在进行触控驱动时与显示驱动芯片的显示控制信号具有关联关系具体为：所述同步模块使所述触控驱动模块在进行触控驱动时与n个行同步信号具有第二关联关系。
  20. 根据权利要求19所述的方法，其特征在于，所述触控驱动模块进一步用于在一个打码周期内依次发送m个检测码以对触控传感器中的一个驱动通道进行驱动；所述第二关联关系：n个行同步信号对应一个打码周期，每个打码周期内第i个检测码开始发送的时间点与n个行同步信号中的第j个行同步信号的触发同步，第i+1个检测码开始发送的时间点与n个行同步信号中的第k个行同步信号的触发同步，i≤m，j、k≤n，j＜k。
  21. 根据权利要求14或者16或者20所述的方法，其特征在于，还包括：对所述行同步信号的个数进行实时统计。
  22. 根据权利要求13-21任一项所述的方法，其特征在于，触控检测模块对触控传感器的输出信号进行检测以确定触控位置，包括：对所述触控传感器的输出信号进行相邻差分处理以确定触控位置。
  23. 一种触控检测系统，其特征在于，包括：如权利要求1-11所述的触控芯片以及触控传感器。
  24. 一种电子设备，其特征在于，包括权利要求1-11的触控芯片。
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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
KR20210123454A (ko) * 2020-04-02 2021-10-14 삼성디스플레이 주식회사 입력 감지 장치 및 이를 포함하는 표시 장치
CN112363641B (zh) * 2020-11-24 2024-06-21 Oppo广东移动通信有限公司 触控扫描方法、tpic芯片、ddic芯片及模组
CN112786509B (zh) * 2021-01-26 2024-02-23 江苏优普纳科技有限公司 一种定位系统、定位方法及计算设备
CN114202455A (zh) * 2021-11-29 2022-03-18 麦思威电子(深圳)有限公司 一种带触摸功能的显示芯片

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090040149A1 (en) * 2007-08-08 2009-02-12 Rohm Co., Ltd. Matrix array drive device, display and image sensor
CN103018994A (zh) * 2013-01-09 2013-04-03 旭曜科技股份有限公司 内嵌式多点触控液晶显示面板系统
CN103853402A (zh) * 2012-11-29 2014-06-11 瑞萨Sp驱动器公司 半导体装置及电子设备
CN104965627A (zh) * 2014-01-29 2015-10-07 辛纳普蒂克斯显像装置合同会社 触摸检测电路以及具备该触摸检测电路的半导体集成电路
CN109960441A (zh) * 2017-12-26 2019-07-02 广州派高智能科技有限公司 触摸检测电路以及具备该触摸检测电路的半导体集成电路

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102132232B (zh) * 2009-09-27 2014-05-07 新励科技(深圳)有限公司 一种触控屏
US8982058B2 (en) * 2009-09-30 2015-03-17 Apple Inc. Touch screen border regions
JP5382658B2 (ja) * 2010-02-26 2014-01-08 株式会社ジャパンディスプレイ タッチセンサ付き表示装置、タッチパネル、タッチパネルの駆動方法、および電子機器
JP6612021B2 (ja) * 2014-08-22 2019-11-27 シナプティクス・ジャパン合同会社 表示駆動装置及び表示装置
JP2016206732A (ja) * 2015-04-15 2016-12-08 株式会社ジャパンディスプレイ 表示装置及びタッチ検出システム
US10088965B2 (en) * 2016-12-16 2018-10-02 Stmicroelectronics Asia Pacific Pte Ltd Reduction of noise in touch data samples via sampling during porch time of Vsync and Hsync signals
CN107357455A (zh) * 2017-06-21 2017-11-17 维沃移动通信有限公司 一种显示屏的驱动方法、显示屏以及移动终端
US11462044B2 (en) * 2019-09-06 2022-10-04 Novatek Microelectronics Corp. Electronic device, chip, panel, decoder and operation method thereof
CN110568963B (zh) * 2019-09-10 2023-10-24 京东方科技集团股份有限公司 一种显示面板、显示基板、显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090040149A1 (en) * 2007-08-08 2009-02-12 Rohm Co., Ltd. Matrix array drive device, display and image sensor
CN103853402A (zh) * 2012-11-29 2014-06-11 瑞萨Sp驱动器公司 半导体装置及电子设备
CN103018994A (zh) * 2013-01-09 2013-04-03 旭曜科技股份有限公司 内嵌式多点触控液晶显示面板系统
CN104965627A (zh) * 2014-01-29 2015-10-07 辛纳普蒂克斯显像装置合同会社 触摸检测电路以及具备该触摸检测电路的半导体集成电路
CN109960441A (zh) * 2017-12-26 2019-07-02 广州派高智能科技有限公司 触摸检测电路以及具备该触摸检测电路的半导体集成电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3736671A4 *

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