WO2021253552A1 - 触控显示面板、触控显示装置及其触控驱动方法 - Google Patents

触控显示面板、触控显示装置及其触控驱动方法 Download PDF

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Publication number
WO2021253552A1
WO2021253552A1 PCT/CN2020/102419 CN2020102419W WO2021253552A1 WO 2021253552 A1 WO2021253552 A1 WO 2021253552A1 CN 2020102419 W CN2020102419 W CN 2020102419W WO 2021253552 A1 WO2021253552 A1 WO 2021253552A1
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Prior art keywords
touch
frequency
drive
partition
driving
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Ceased
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PCT/CN2020/102419
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English (en)
French (fr)
Inventor
叶剑
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/978,854 priority Critical patent/US11609659B2/en
Publication of WO2021253552A1 publication Critical patent/WO2021253552A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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

Definitions

  • This application relates to the field of touch display technology, in particular to the field of touch drive technology, and in particular to a touch display panel, a touch display device and a touch drive method thereof.
  • the report point frequency of the existing touch screen is adjusted as a whole, that is, either all use high report point frequency for touch control, or all use low report point frequency for touch control, and for touch screens, high
  • the reporting frequency means a high working frequency, and the charging and discharging speed of the capacitive electrode that realizes the touch sensing function is also accelerated, which will inevitably increase the overall power consumption of the touch screen, reduce the standby time, and have a poor user experience.
  • the present application provides a touch display panel, which solves the problem of how to integrate a good touch experience and low power consumption into the same touch display panel.
  • the present application provides a touch display panel that works in at least a first working mode and a second working mode; the touch display panel includes a first partition and a second partition, both of the first partition and the second partition It includes a plurality of touch units; when the touch display panel is working in the first working mode, the touch units in the first partition all use the first report point frequency for touch sampling, and the touch units in the second partition all use the first
  • the second report point frequency is used for touch sampling.
  • the first report point frequency and the second report point frequency are the same or different; when the touch display panel works in the second working mode, the touch units in the first zone all adopt the third The report point frequency is used for touch sampling, and the touch units in the second partition all use the fourth report point frequency for touch sampling work.
  • the third report point frequency is different from the fourth report point frequency.
  • the touch display panel further includes a touch drive IC, and the touch drive IC is electrically connected to the touch units of the first partition and the second partition;
  • the touch drive IC provides touch drive signals at the first drive frequency for the touch units in the first partition, and provides the second drive frequency for the touch units in the second partition.
  • the first drive frequency and the second drive frequency are the same or different; when the touch display panel works in the second working mode, the touch drive IC provides the third drive for the touch units in the first partition
  • the touch driving signal of the fourth frequency is different from the fourth driving frequency.
  • the first driving frequency and the first reporting point frequency, the second driving frequency and the second reporting point frequency, and the third driving frequency all conform to the following corresponding relationships:
  • RP is the corresponding report frequency
  • F is the corresponding driving frequency
  • 1/F is the corresponding driving period
  • M is the number of scans, that is, the number of driving cycles in a scan period.
  • the first partition and the second partition use the same number of scans.
  • the touch driver IC configures the first driving frequency, the second driving frequency, the third driving frequency, and the fourth driving frequency at non-noise frequency points. Drive frequency.
  • the touch display panel includes: a plurality of first touch electrodes arranged in a first direction, and a plurality of second touch electrodes arranged in a second direction.
  • Each touch unit includes a pair of first touch electrodes and second touch electrodes that are arranged oppositely;
  • the touch drive IC is electrically connected to the first touch electrodes of the first partition and the second partition, respectively, for
  • the first touch electrode provides a touch drive signal of at least one of the first drive frequency, the second drive frequency, the third drive frequency, and the fourth drive frequency;
  • the touch drive IC is also connected to the first partition and the second partition respectively.
  • the second touch electrodes of the partitions are electrically connected to receive mixed-frequency touch signals generated by the second touch electrodes of the first partition and the second partition.
  • the touch driver IC includes a filter; the filter is used to separate mixed-frequency touch signals to correspondingly obtain single-frequency touch signals.
  • the ratio of the third report point frequency to the fourth report point frequency is a positive integer, or the ratio of the fourth report point frequency to the third report point frequency is Positive integer.
  • the present application provides a touch display device, which includes the touch display panel of any one of the embodiments in the first aspect.
  • the present application provides a touch driving method for a touch display panel.
  • the touch display panel includes a first partition and a second partition.
  • the touch driving method includes: the touch driving IC output driving frequency is the same or different The touch drive signal is sent to the corresponding first and second partitions; the touch drive IC receives the mixed frequency touch signal of the first and second partitions; the touch drive IC filters the mixed frequency touch signal to correspondingly obtain a single Frequency touch signal; and the touch drive IC calculates and reports touch coordinates at different reporting point frequencies according to the frequency and variation of a single-frequency touch signal.
  • both the first partition and the second partition include a plurality of touch units electrically connected to the touch driver IC; the touch unit is used to access the touch driver Signal to generate the corresponding touch signal.
  • each touch unit includes a pair of opposed first touch electrodes and second touch electrodes; The electrode is used to access the corresponding touch drive signal; the second touch electrode is used to generate the corresponding touch signal.
  • the touch drive IC outputs a touch drive signal of the third drive frequency to the first partition; the touch drive IC outputs a touch drive signal of the fourth drive frequency To the second partition; where the third driving frequency is different from the fourth driving frequency.
  • the first and second partitions report points at different reporting frequencies, which can achieve a good touch experience with lower power consumption, that is, users can achieve high-frequency touch in a specific partition. While controlling the experience, it does not excessively increase the overall touch power consumption of the touch display panel, increases the standby time, and brings a better user experience to customers.
  • FIG. 1 is a schematic diagram of the first structure of a touch display panel provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a second structure of the touch display panel provided by an embodiment of the application.
  • FIG. 3 is a schematic flowchart of a touch driving method provided by an embodiment of the application.
  • Fig. 4 is one of the scanning schematic diagrams provided by an embodiment of the application.
  • FIG. 5 is the second schematic diagram of scanning provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of an equivalent circuit model provided by an embodiment of the application.
  • the present application provides a touch display panel, which can at least work in a first working mode and a second working mode (that is, it can also work in other working modes, which are not limited here).
  • the first working mode can be, but not limited to, time-sharing with the second working mode;
  • the touch display panel includes a first partition 10 and a second partition 20, and both the first partition 10 and the second partition 20 include a plurality of touch units ( (Not shown); when the touch display panel works in the first working mode, the touch units of the first partition 10 all use the first report point frequency for touch sampling, and the touch units of the second partition 20 all use the first The second report point frequency is used for touch sampling.
  • the first report point frequency and the second report point frequency are the same or different; when the touch display panel works in the second working mode, the touch units of the first zone 10 all adopt the first
  • the touch sampling operation is performed at the three reporting point frequencies, and the touch units of the second partition 20 all use the fourth reporting point frequency for touch sampling operation, and the third reporting point frequency is different from the fourth reporting point frequency.
  • the first subarea 10 and the second subarea 20 are provided with a plurality of intersecting scan electrodes Tx and sensing electrodes Rx; wherein, the scan electrodes Tx located in the first subarea 10 and the second subarea 20 carry the same or Scanning signals of different driving frequencies, and the sensing electrodes Rx carry sensing signals that are received at fixed intervals.
  • the touch display panel may include a partition with a higher frequency of touch operation and a partition with a lower frequency of touch operation; the first partition 10 and the second partition 20 may be one of the two partitions, and the second partition One partition 10 is different from the second partition 20.
  • Both the partition with higher touch operation frequency and the partition with lower touch operation frequency can be, but not limited to, the upper half of the touch display panel or the lower half of the screen; it can also be, but not limited to, the touch display panel.
  • One of the left half screen or the right half screen of the control display panel it can also be a part of the touch display panel or another part of the area, wherein the area of a part of the area and another part of the area are the same or different.
  • the second working mode can be understood as the first partition and the second partition respectively perform touch operations with different reporting point frequencies.
  • high reporting point frequencies can be used for touch operations in the second partition, and at the same time .
  • low-frequency video is shown, which not only guarantees the user's high-frequency touch experience, but also maintains the power consumption of the overall touch display panel, prolongs the standby time and provides a better user experience.
  • the first working mode can be understood as the entire touch display panel adopts a low touch frequency method, or, under certain circumstances, adopts a high touch frequency method, or, the first zone adopts a low touch frequency while the second zone adopts a low touch frequency method. Use a lower touch frequency method.
  • the introduction of the above working mode is only an example, and it can be flexibly set according to actual needs, and there is no restriction here.
  • the touch display panel further includes a touch drive IC 30, and the touch drive IC 30 is electrically connected to the touch units of the first partition 10 and the second partition 20; when the touch display panel works in the first work In the mode, the touch driving IC 30 provides touch driving signals at the first driving frequency for the touch units in the first partition 10, and provides touch driving signals at the second driving frequency for the touch units in the second partition 20.
  • the first driving frequency and the second driving frequency are the same or different; when the touch display panel is working in the second working mode, the touch driving IC 30 provides touch driving at the third driving frequency for the touch units of the first partition 10
  • the touch control unit of the second partition 20 is provided with a touch driving signal of a fourth driving frequency, and the third driving frequency is different from the fourth driving frequency.
  • reporting frequencies be used for partition independent touch sampling
  • driving frequencies can be used for partition independent drive scanning
  • the scanning signal can be, but not limited to, a square wave signal.
  • the touch electrode may include, but is not limited to, the scan electrode Tx, and may also include the sensing electrode Rx corresponding to the scan electrode Tx.
  • the report point frequency can be understood as mainly corresponding to the reciprocal of the time used when the scan electrode Tx of the corresponding partition is scanned by the scan signal SS.
  • the partitions with higher touch operation frequency have higher driving frequency, which can achieve higher report point frequency, and higher report point frequency can respond to the user’s touch experience more quickly; while the touch operation frequency is lower
  • the low partition has a lower driving frequency, which can be the main display, touch operation as a supplement, and the charging and discharging speed of the capacitor electrode is also lower; therefore, the touch display panel can not only maintain a good touch experience for the user, but also Maintain this state with lower power consumption.
  • the first driving frequency and the first reporting point frequency, the second driving frequency and the second reporting point frequency, the third driving frequency and the third reporting point frequency, the fourth driving frequency and the fourth reporting point frequency All comply with the following corresponding relationship:
  • RP is the corresponding report frequency
  • F is the corresponding driving frequency
  • 1/F is the corresponding driving period
  • M is the number of scans, that is, one scan period includes the number of driving cycles.
  • M can be, but is not limited to, a positive integer, for example, 1, or 2, or 3, or 4, which can be set as required.
  • the touch driving IC configures the first driving frequency, the second driving frequency, the third driving frequency, and the fourth driving frequency at non-noise frequency points. It needs to be explained that the driving frequency of certain frequency points is likely to cause greater noise in the signal processing process, which will cause corresponding interference to the signal processing process, and affect the accuracy of touch coordinate calculation. Therefore, the touch drive When the IC configures the corresponding drive frequency, the corresponding noise frequency point can be selected according to the needs.
  • each touch unit includes a pair of first touch electrodes arranged opposite to each other.
  • the control electrode and the second touch electrode; the touch drive IC 30 is electrically connected to the first touch electrode of the first partition 10 and the second partition 20, and is used to provide the first drive frequency and the second drive for the first touch electrode
  • the touch driving signal of at least one driving frequency of the third driving frequency, the third driving frequency, and the fourth driving frequency; the touch driving IC 30 is also electrically connected to the second touch electrodes of the first partition 10 and the second partition 20, respectively, for Receiving mixed-frequency touch signals generated by the second touch electrodes from the first subarea and the second subarea.
  • each scan electrode Tx may include a plurality of first transparent electrodes connected in sequence along the second direction SD, and the plurality of sensing electrodes Rx are along the second direction SD. Sequentially arranged, each sensing electrode Rx may include a plurality of second transparent electrodes sequentially connected along a first direction FD, the first direction FD is different from the second direction SD, and the first transparent electrode and the second transparent electrode may be but not limited to The rhombus may also have various shapes such as a strip.
  • the first direction FD may be perpendicular to the second direction SD.
  • the first direction FD may be a vertical direction, and correspondingly, the second direction SD is a horizontal direction; or the second direction SD may be a vertical direction, and correspondingly, the first direction FD is a horizontal direction.
  • the sensing signals in all sensing electrodes Rx are simultaneously received at fixed intervals, and the touch position can be accurately and quickly achieved according to the amount of change of the sensing signal and the frequency of the sensing signal. position.
  • the fixed interval time is the scanning time of the first partition 10, or the scanning time of the second partition 20, or the sum of the scanning times of the first partition 10 and the second partition 20; it can be understood that according to different fixed intervals Receive a sensing signal for locating the touch position, that is to say, perform a touch sampling at a fixed interval to quickly recognize the user's touch operation, and calculate the coordinates of the touch position based on the change and frequency of the sensing signal. And report to the host or application processor 40.
  • the touch driver IC 30 receives the touch signals of the first partition 10 and the second partition 20 at the same time, and the touch signal from the first partition 10 and the touch signal from the second partition 20
  • the driving frequency of is different (for example, when working in the second working mode), therefore, after touch signals of different driving frequencies enter the touch driving IC 30, a corresponding mixed frequency touch signal is formed. Therefore, in the calculation of touch coordinates, a touch driver IC 30 with a filter NBF is needed; wherein, the filter NBF can be used but not limited to separate mixed-frequency touch signals to correspondingly obtain single-frequency touch signals. On this basis, the subsequent calculation of touch coordinates can be performed according to the prior art. It should be noted that the filter NBF can also filter out a part of noise interference, which helps to achieve accurate calculation of touch coordinates.
  • first partition and the second partition use the same drive frequency scanning signal for touch scanning
  • the partition independent drive may not be performed, but the entire surface touch drive can be performed, that is, the same drive frequency is used
  • the touch scan signal is scanned across the first zone and the second zone, and then the touch position is reported.
  • the ratio of the third report point frequency to the fourth report point frequency is a positive integer, or the ratio of the fourth report point frequency to the third report point frequency is a positive integer.
  • one of the report points has a frequency of 120 Hz, and the other report point has a frequency of 240 Hz.
  • the present application provides a touch display device, which includes the touch display panel in any embodiment.
  • the first partition 10 and the second partition 20 report points at different report frequencies, which can also achieve a good touch experience with lower power consumption. .
  • the driving frequency disclosed in this embodiment is the frequency of the touch driving signal.
  • a plurality of scan electrodes Tx are sequentially arranged along the first direction FD, and these scan electrodes Tx are divided into multiple groups, and each group has the same number of adjacent scan electrodes Tx; they are located in the first partition 10
  • Each group of scan electrodes Tx in the second section 20 carries a scan signal of the third frequency; each group of scan electrodes Tx located in the second subarea 20 carries a scan signal of the fourth frequency; and the third frequency is different from the fourth frequency.
  • At least one scan electrode Tx is multiplexed in two adjacent groups. It should be noted that when the number of scan electrodes Tx is not enough to be divided into groups, for example, there are a total of 17 scan electrodes Tx in the touch display panel. If 4 scan electrodes Tx are used as a group, it should be Divide into several groups, of course, there are 5 groups. In this case, one of the groups has only one scan electrode Tx. At this time, it is necessary to multiplex the three scan electrodes Tx adjacent to the scan electrode Tx. Of course The three scan electrodes Tx that are multiplexed may be, but are not limited to, located in the same group, and may also be scan electrodes Tx located in different adjacent groups.
  • the two groups of multiplexed scan electrodes Tx are both located in the first partition 10 or the second partition 20, and the multiplexed scan electrodes Tx carry scan signals of the same driving frequency, which simplifies the complexity of circuit or signal design. Spend. That is, the two groups of multiplexed scan electrodes Tx are both located in the first section 10 or/and the second section 20.
  • the scan electrodes Tx of the same group carry scan signals of the same phase to achieve simultaneous scanning of the scan electrodes Tx of the same group, which speeds up the scan, shortens the scan time per frame, and increases the frequency of reporting points of the touch display panel.
  • the scan electrodes Tx of different groups carry scan signals of different phases to realize that different groups scan in a predetermined sequence; the predetermined sequence can be, but not limited to, scan each group in sequence along the first direction FD, or it can be in the opposite direction to the first direction FD.
  • the direction of scanning each group in turn; it can also be other interval scanning sequence.
  • the number of groups located in the first partition 10 and the number of groups located in the second partition 20 may be, but not limited to, equal or unequal, and can be adjusted according to product or user requirements.
  • the touch display panel further includes a touch drive IC 30; the touch drive IC 30 is connected to the scan electrode Tx and the sensing electrode Rx; the touch drive IC 30 is used to provide scan signals and sensing signals , And receive sensing signals at regular intervals to locate the corresponding touch position.
  • the touch display panel further includes an application processor 40; the application processor 40 is connected to the touch drive IC 30; the touch drive IC 30 reports the touch position to the application processor 40, and the touch The control driver IC 30 correspondingly adjusts the third frequency and the fourth frequency according to the split screen mode of the application processor 40.
  • the touch driver IC 30 can provide scanning signals of the corresponding frequency and/or phase, and calculate the touch position through the corresponding algorithm according to the change of the sensing signal, such as plane coordinates to achieve positioning, and report the touch position to the application The processor 40 or host.
  • the application processor 40 can self-adjust the split screen mode based on the needs of the user terminal or the application terminal, and the touch driver IC 30 then adjusts the driving frequency of the corresponding partition according to the split screen mode, so as to improve the user's touch experience.
  • the present application provides a touch driving method of a touch display panel.
  • the touch display panel includes a first partition 10 and a second partition 20.
  • the touch driving method shown in FIG. 3 includes the following step:
  • Step S10 the touch driving IC 30 outputs touch driving signals with the same or different driving frequencies to the corresponding first partition 10 and the second partition 20.
  • Step S20 the touch driving IC 30 receives the mixed frequency touch signal of the first partition 10 and the second partition 20.
  • Step S30 the touch driving IC 30 filters the mixed-frequency touch signal to correspondingly obtain a single-frequency touch signal.
  • step S40 the touch drive IC 30 calculates and reports touch coordinates at different reporting point frequencies according to the frequency and variation of the single-frequency touch signal.
  • both the first subarea 10 and the second subarea 20 include a plurality of touch control units (not shown) electrically connected to a touch drive IC; the touch control units are used to access touch drive signals, To generate the corresponding touch signal.
  • each touch unit includes a pair of opposed first touch electrodes and second touch electrodes; the first touch electrodes are used to access corresponding touch drive signals; the second touch electrodes are used to generate The corresponding touch signal.
  • the first touch electrode can be but not limited to the scan electrode Tx
  • the second touch electrode can be but not limited to the sensing electrode Rx.
  • the touch driving IC 30 outputs a touch driving signal of the third driving frequency to the first partition; the touch driving IC 30 outputs a touch driving signal of the fourth driving frequency to the second partition; wherein, the third driving The frequency is different from the fourth driving frequency.
  • the first partition 10 and the second partition 20 report points at different report points, which can also achieve good performance with lower power consumption. Touch experience.
  • the report point frequency of the touch display panel is the reciprocal of one frame time for the touch driver IC 30 to scan the complete touch screen body, and the time for the touch driver IC 30 to scan the complete touch screen body for one frame is: first self-capacitance The sum of the switching time t1, the self-capacitive scanning time t2, the second self-capacitive switching time t3, the mutual-capacitive scanning time t4, and the noise scanning time t5.
  • the most critical component of a touch is the mutual-capacitance scanning consumption t4, which is the time required for a single square wave of the scanning signal T, the number of scanning electrodes in the touch screen, and scanning Grouping is closely related.
  • the first scan electrode Tx1 to the fourth scan electrode Tx4 are a group
  • the fifth scan electrode Tx5 to the eighth scan electrode Tx8 are a group
  • the ninth scan electrode Tx1 to the fourth scan electrode Tx4 is a group.
  • the scan electrode Tx9 to the twelfth scan electrode Tx12 are a group, and the thirteenth scan electrode Tx13 to the sixteenth scan electrode Tx16 are a group, so at the end only the seventeenth scan electrode Tx17 is left.
  • Fourteen scanning electrodes Tx14 to seventeenth scanning electrodes Tx17 are divided into the last group, which is equivalent to scanning twice from fourteenth scanning electrodes Tx14 to sixteenth scanning electrodes Tx16.
  • the scan electrodes Tx on the touch screen are grouped.
  • the first scan electrode Tx1 to the fourth scan electrode Tx4 use the same set of waveforms to scan the four scan electrodes Tx at the same time, and this group
  • the number of single square waves included in the scan waveform is the key to the scan time of this group of waveforms, that is, a group of scan sampling time. Therefore, the corresponding drive frequency can be controlled by adjusting the number of single square waves contained in a set of scanning waveforms.
  • the present disclosure provides a split-screen and mixed sampling rate touch display screen.
  • the upper half of the screen selects to perform normal display operation tasks, and the lower half of the screen selects Perform high-requirement operation tasks such as game mode; the reporting frequency of the upper and lower half of the screen is different, the upper half of the screen chooses to perform ordinary display operation tasks, and the reporting frequency is lower, such as normal 120Hz; the lower half of the screen chooses to execute the same high of game mode Operational tasks are required, and the reporting frequency is relatively high, such as 240 Hz.
  • the present disclosure greatly meets the current demand for high reporting point frequency of touch in the current e-sports and game modes, and at the same time increases the power consumption of the touch screen as little as possible.
  • the touch screen When the touch screen is divided into upper and lower screens, the requirements for different tasks to be performed are different.
  • the same touch screen has different reporting frequencies for the upper and lower half of the screen. For example, the upper half of the screen runs in the normal operation mode, and its touch screen performs the normal reporting frequency; the lower half of the screen runs in the high-frequency operation mode, and its touch screen performs the high reporting frequency.
  • the first self-capacitance switching time t1 is the actual value of the oscilloscope.
  • the self-capacitive scan time t2 is 2 self-capacitive waveforms, and each waveform has 80 pulses, which is equal to 2*80*(2*3RC).
  • the second self-mutual capacitance switching time t3 is the actual measurement value of the oscilloscope.
  • the time-consuming t4 of mutual capacitance scanning is 17 scanning electrodes TX, 4 in a group, divided into 5 groups, each segment of the waveform has 64 pulses, that is, 64*4*5* (2*3RC).
  • the interference (Noise) scan time t5 is the actual value of the oscilloscope.
  • the time T for a single square wave is usually determined by the 3RC time constant of the touch screen. After the design of the display panel (Panel) is determined, the 3RC is usually determined accordingly.
  • the report frequency table 1-1 As shown in the report frequency table 1-1, when the number of single square waves contained in a set of scanning waveforms is reduced from 64 to 44, the mutual capacitance time t4 is also reduced from 3635.2us to 2499.2us, which will scan one frame The time-consuming T10 has also been reduced to 4165.6us, thereby increasing the reporting frequency to 240Hz.
  • the time taken to scan a frame T10 is related to the frequency F of the scan signal, which includes the sum of the scan time of each group, for example, the scan time of the first group is T11, the scan time of the first group is T12, and By analogy, the scan time of the Kth group is T1K; where K is an integer.
  • the present disclosure also provides a touch display screen that realizes split-screen mixed sampling rate.
  • the number of single square waves contained in a set of scan waveforms of the upper and lower half screens is adjusted to adjust the corresponding scan sampling time, thereby adjusting the corresponding Frequency of reporting points.
  • the number of scan electrodes Tx included in the upper and lower half of the screen is basically the same, which is equivalent to halving the number of scan electrodes Tx; and the scanning in the upper and lower half of the screen
  • the electrode Tx uses the same single scan waveform frequency; when the drive scheme is set, the number of single square waves contained in a set of scan waveforms on the upper half of the screen is larger, such as M, so a set of waveforms and the entire upper half of the screen are mutually compatible
  • the scanning sampling time is longer, and the corresponding report point frequency is lower, such as 120Hz.
  • the number of single scans contained in a group of scan waveforms in the lower half of the screen is small, such as N, so the sampling time of a group of waveforms and the mutual capacitance scan of the entire lower half of the screen is shorter, and the corresponding report point frequency is higher, such as 240Hz , Where M>N.
  • the present invention supports split-screen operation, it guarantees a smooth use experience, such as e-sports, and has a high sampling rate in game mode without excessively increasing power consumption; for split-screen operation, different screen areas have different application requirements , Use different report rate (Report Rate) to meet the demand of reducing power consumption as much as possible.
  • Report Rate Report Rate
  • the scan time T20 of one frame in the upper half of the screen is related to the frequency F1 of the scan signal of the corresponding partition, which includes the sum of the scan time of each group in the corresponding partition.
  • the scan time of the first group is T21
  • the scan time of one group is T22
  • the scan time of the Kth group is T2K; where K is an integer.
  • the time T30 for scanning one frame in the lower half of the screen is related to the frequency F2 of the scanning signal of the corresponding partition, which includes the sum of the scanning time of each group in the corresponding partition.
  • the scanning time of the first group is T31
  • the scanning time of the first group is T31
  • the scan time of is T32
  • the scan time of the Kth group is T3K; where K is an integer.
  • the present disclosure greatly meets the current demand for high reporting point frequency of touch in the current e-sports and game modes, and at the same time increases the power consumption of the touch screen as little as possible.
  • the touch screen When the touch screen is divided into upper and lower screens, the requirements for different tasks to be performed are different.
  • the same touch screen has different reporting frequencies for the upper and lower half of the screen. For example, the upper half of the screen runs in the normal operation mode, and its touch screen performs the normal reporting frequency; the lower half of the screen runs in the high-frequency operation mode, and its touch screen performs the high reporting frequency.
  • the touch display screen of the present disclosure has a split-screen mixed sampling rate, and when different display operation tasks are run on the same screen and the upper and lower half of the screen, it has different touch report point frequencies at the same time. For example, compared to a traditional touch display screen, there can only be one touch point reporting frequency. In normal mode, the whole screen is the general reporting point frequency, such as 60Hz/120Hz; in game mode, the whole screen is switched to high reporting. Point frequency, such as 180Hz, 240Hz, or even higher than 240Hz.
  • the present disclosure supports split-screen operation; it supports split-screen hybrid touch reporting frequency; to ensure a smooth use experience, such as e-sports, it has a high sampling rate in the game mode, and at the same time increases the power consumption of the touch screen as little as possible.
  • the reporting frequency of a normal touch screen is to scan the entire screen once, and to scan all the scanning electrodes Tx of a complete touch screen, then calculate the touch position coordinates, and finally the touch driver IC30 reports the touch to the host Position coordinates; therefore, the traditional touch screen, a complete display screen, the entire screen is usually a fixed touch point frequency, such as 120Hz/240Hz, only one of the two can be selected; or the entire screen can be switched, as shown
  • the refresh rate is 60Hz, and the touch sampling of the entire screen is 120Hz; when the display refresh rate is switched to 90Hz, the touch report frequency of the entire screen is switched to 180Hz.
  • the host is equivalent to the application processor 40.
  • the present disclosure provides a touch display screen with a split screen and mixed sampling rate.
  • the number of scanning electrodes Tx/sensing electrodes Rx is 20/40 respectively; when the full screen runs in a normal working mode, the first scanning electrode Tx1 to the second scanning electrode
  • the touch driver IC30 uses a fixed driving frequency to scan, such as a 200KHz square wave; the reporting frequency of the entire screen is a specific value, such as 120Hz.
  • the touch driver IC 30 calculates the corresponding coordinates according to the changed position of the capacitance value, generates an interrupt signal, and reports it to the Host.
  • the present disclosure provides a split-screen and mixed-sampling touch display screen. After the touch drive IC30 scans the scan channel of half of the screen, the coordinate point is reported once, and the upper and lower half screens are scanned independently, and the coordinates are reported independently. Point.
  • the touch driver IC 30 is provided with a filter NBF; the filter NBF filters the processed sensing signals, and the touch driver IC 30 recognizes and independently processes the touch positioning of the first partition 10 and/or the second partition 20. Of touch targeting.
  • the scan signal with frequency F1 in the first partition 10 and the scan signal with frequency F2 in the second partition 20 are coupled by mutual capacitance MC to generate corresponding sensing signals, and After the signal is received and processed by the front-end analog amplifier AFE in the touch drive IC 30, it becomes a mixed induction signal.
  • the touch drive IC (Touch IC) 30 is provided with a filter NBF composed of a specific capacitor and resistance circuit.
  • the filter NBF is a narrow bandwidth filter, which can pass the signal of a predetermined specific frequency component in the received signal, and greatly attenuate or suppress the signal of other frequency components.
  • filtering the signal is the prerequisite and basis of signal processing. The main purpose of filtering is to filter out useless interference signals or signals irrelevant to the target signal, and then obtain the signal required by the system.
  • the touch driver IC30 filters the received analog electrical signals (specific voltage amplitude/a certain frequency), which is to pass the specific frequency signal through the filter NBF inside the IC, so as to receive a large number of signals.
  • These signals include Target signal / various noise (Noise) signals NS, and then intercept the part you want from these signals.
  • the corresponding sensing signal comes from the first partition 10 or the second partition 20, and the touch positioning of the first partition 10 and/or the touch positioning of the second partition 20 can be processed independently.
  • the analog signal obtained after the internal analog filtering of the Touch IC is converted by the analog-to-digital converter ADC to obtain a digital signal (for example, 10101, or 10111).
  • a digital signal for example, 10101, or 10111.
  • the internal target of the Touch IC The data needed to calculate the touch coordinates.
  • DSP digital signal processor
  • Digital filtering is an algorithm or device composed of digital multipliers, adders and other units, which process the input discrete digital signal codes, and the processing is to perform calculations in accordance with a pre-programmed program.
  • the above foldable display screen is taken as an example for description.
  • the number of electrodes is the scanning electrode Tx/sensing electrode Rx is 20/40; the design requirement is that the horizontal channel is the scanning electrode Tx, and the vertical channel is the sensing electrode Rx; the first scanning electrode Tx1
  • the tenth scan electrode Tx10 is located in the upper half of the screen, the eleventh scan electrode Tx11 to the twentieth scan electrode Tx20 are located in the lower half of the screen; the first scan electrode Tx1 to the tenth scan electrode Tx10 and the eleventh
  • the scanning electrodes Tx11 to the twentieth scanning electrode Tx20 are scanned separately and independently, and the first sensing electrode Rx1 to the fortieth sensing electrode Rx40 are received together.
  • the AP host informs the touch driver IC30 to switch to two independent working modes of the upper and lower half of the screen; and select the upper half The screen runs in normal display touch mode, and the lower half of the screen runs in game mode.
  • the touch driver IC30 switches according to the instructions issued by the AP, and configures its first scan electrode Tx1 to the tenth scan electrode Tx10 to a fixed driving frequency, such as 200KHz, to maintain a common report frequency; when scanning When the first scan electrode Tx1 to the tenth scan electrode Tx10 (upper half-screen scan) of the first ten channels are completed, the touch driver IC 30 will report the coordinate position once, and the report point frequency can be a common value, such as 120 Hz.
  • the eleventh scan electrode Tx11 to the twentieth scan electrode Tx20 configure its eleventh scan electrode Tx11 to the twentieth scan electrode Tx20 to be at a different driving frequency from the upper half of the screen, such as 250KHz; scan from the first scan electrode Tx1 to the tenth
  • the eleventh scanning electrode Tx11 to the twentieth scanning electrode Tx20 also scan at the same time (the lower half of the screen scan).
  • the higher frequency is, for example, 240 Hz.
  • the touch report frequency is usually the reciprocal of the time required to scan all the scan electrodes Tx of the target number.
  • the electrode channel of the scanning electrode Tx is continuously conductive in the horizontal direction
  • the electrode channel of the sensing electrode Rx is continuously conductive in the longitudinal direction.
  • the upper and lower half of the screen respectively use a single square wave driving frequency.
  • the upper and lower half of the screen can use the same cycle (Cycle) number of waveforms to scan. Because the number of single square waves set in a set of waveforms on the upper and lower half of the screen is different, the corresponding touch The frequency of the control report point is different.
  • the touch screen When the touch screen is divided into upper and lower screens, it performs different tasks and runs in different modes; the same touch screen, the upper and lower half screens have different touch reporting frequencies.
  • the present disclosure realizes that the same touch display screen has a split-screen mixed report point frequency, that is, different touch report point frequencies are provided for different areas of the upper and lower half of the screen.
  • the present invention greatly satisfies the current demand for high touch frequency reporting in e-sports and game modes, and at the same time increases the power consumption of the touch screen as little as possible; thereby greatly reducing the power consumption of the entire smart phone and increasing The battery life of the smartphone.

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Abstract

本申请公开了一种触控显示面板、触控显示装置及其触控驱动方法，本申请提供的触控显示面板，第一分区、第二分区以不同的报点频率进行报点，能够以较低的功耗实现良好的触控体验，即用户可以在特定分区实现高频触控体验的同时，又不过分提高触控显示面板的整体触控功耗，增加了待机时长，为客户带来更加良好的使用体验。

Description

触控显示面板、触控显示装置及其触控驱动方法 技术领域
本申请涉及触摸显示技术领域，尤其涉及触控驱动技术领域，具体涉及一种触控显示面板、触控显示装置及其触控驱动方法。
背景技术
随着人类对触控显示屏的刷新率需求越来越高，随之而来的是，对触控的报点频率(Report Rate)也存在着越来越高的需求，高报点频率(High Report Rate)可以使得用户感受到响应更快、交互更流畅的触摸功能。
现有的触控显示屏的报点频率都是整体调节的，即要么都采用高报点频率进行触控，要么都采用低报点频率进行触控，而对于触控显示屏而言，高报点频率意味着高的工作频率，实现触摸感应功能的电容电极的充放电速度亦随之加快，这必然增加触摸显示屏的整体功耗，降低待机时长，用户体验不佳。
鉴于此，既可以使用户对触控显示屏保持良好的触控体验(即采用高报点频率进行触控)，又可以有效降低触摸显示屏的整体功耗，延长待机时间，这是业界亟需解决的问题。
技术问题
本申请提供一种触控显示面板，解决了如何集良好触控体验与较低功耗于同一触控显示面板的问题。
技术解决方案
第一方面，本申请提供了一种触控显示面板，其至少工作于第一工作模式和第二工作模式；触控显示面板包括第一分区和第二分区，第一分区和第二分区均包括多个触控单元；当触控显示面板工作于第一工作模式时，第一分区的触控单元均采用第一报点频率进行触控采样工作，第二分区的触控单元均采用第二报点频率进行触控采样工作，第一报点频率与第二报点频率相同或不相同；当触控显示面板工作于第二工作模式时，第一分区的触控单元均采用第三报点频率进行触控采样工作，第二分区的触控单元均采用第四报点频率进行触控采样工作，第三报点频率与第四报点频率不相同。
基于第一方面，在第一方面的第一种实施方式中，触控显示面板还包括触控驱动IC，触控驱动IC分别与第一分区和第二分区的触控单元电连接；当触控显示面板工作于第一工作模式时，触控驱动IC为第一分区的触控单元均提供第一驱动频率的触控驱动信号，并为第二分区的触控单元均提供第二驱动频率的触控驱动信号，第一驱动频率与第二驱动频率相同或不相同；当触控显示面板工作于第二工作模式时，触控驱动IC为第一分区的触控单元均提供第三驱动频率的触控驱动信号，并为第二分区的触控单元均提供第四驱动频率的触控驱动信号，第三驱动频率与第四驱动频率不相同。
基于第一方面的第一种实施方式，在第一方面的第二种实施方式中，第一驱动频率与第一报点频率、第二驱动频率与第二报点频率、第三驱动频率与第三报点频率、第四驱动频率与第四报点频率，均符合如下对应关系：
RP＝1/((1/F)*M)
其中，RP为对应的报点频率；F为对应的驱动频率；1/F为对应的驱动周期；M为扫描次数，即在一个扫描周期中驱动周期的数量。
基于第一方面的第二种实施方式，在第一方面的第三种实施方式中，第一分区和第二分区采用相同的扫描次数。
基于第一方面的第一种实施方式，在第一方面的第四种实施方式中，触控驱动IC以非噪音频点配置第一驱动频率、第二驱动频率、第三驱动频率以及第四驱动频率。
基于第一方面，在第一方面的第五种实施方式中，触控显示面板包括：多个沿第一方向排列的第一触控电极，和多个沿第二方向排列的第二触控电极，每个触控单元包括一对相对设置的第一触控电极和第二触控电极；触控驱动IC分别与第一分区和第二分区的第一触控电极电连接，用于为第一触控电极提供第一驱动频率、第二驱动频率、第三驱动频率、第四驱动频率中至少一种驱动频率的触控驱动信号；触控驱动IC还分别与第一分区和第二分区的第二触控电极电连接，用于接收来自第一分区和第二分区的第二触控电极产生的混合频率触控信号。
基于第一方面的第五种实施方式，在第一方面的第六种实施方式中，触控驱动IC包括滤波器；滤波器用于分离混合频率触控信号，以对应获取单一频 率触控信号。
基于第一方面，在第一方面的第七种实施方式中，第三报点频率与第四报点频率的比值为正整数，或者，第四报点频率与第三报点频率的比值为正整数。
第二方面，本申请提供了一种触控显示装置，其包括第一方面中任一实施方式的触控显示面板。
第三方面，本申请提供了一种触控显示面板的触控驱动方法，触控显示面板包括第一分区和第二分区，触控驱动方法包括：触控驱动IC输出驱动频率相同或者相异的触控驱动信号至对应的第一分区和第二分区；触控驱动IC接收第一分区、第二分区的混合频率触控信号；触控驱动IC滤波混合频率触控信号，以对应获得单一频率触控信号；以及触控驱动IC根据单一频率触控信号的频率和变化量，计算并以不同报点频率上报触摸坐标。
基于第三方面，在第三方面的第一种实施方式中，第一分区和第二分区均包括多个与触控驱动IC电连接的触控单元；触控单元用于接入触控驱动信号，以生成对应的触控信号。
基于第三方面的第一种实施方式，在第三方面的第二种实施方式中，每个触控单元包括一对相对设置的第一触控电极和第二触控电极；第一触控电极用于接入对应的触控驱动信号；第二触控电极用于生成对应的触控信号。
基于第三方面，在第三方面的第三种实施方式中，触控驱动IC输出第三驱动频率的触控驱动信号至第一分区；触控驱动IC输出第四驱动频率的触控驱动信号至第二分区；其中，第三驱动频率异于第四驱动频率。
有益效果
本申请提供的触控显示面板，第一分区、第二分区以不同的报点频率进行报点，能够以较低的功耗实现良好的触控体验，即用户可以在特定分区实现高频触控体验的同时，又不过分提高触控显示面板的整体触控功耗，增加了待机时长，为客户带来更加良好的使用体验。
附图说明
图1为本申请实施例提供的触控显示面板的第一种结构示意图。
图2为本申请实施例提供的触控显示面板的第二种结构示意图。
图3为本申请实施例提供的触控驱动方法的流程示意图。
图4为本申请实施例提供的扫描示意图之一。
图5为本申请实施例提供的扫描示意图之二。
图6为本申请实施例提供的等效电路模型示意图。
本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
如图1所示，本申请提供了一种触控显示面板，其至少可以工作于第一工作模式和第二工作模式(即还可以工作于其他工作模式，这里不做限制)，其中，第一工作模式可以但不限于与第二工作模式是分时进行的；触控显示面板包括第一分区10和第二分区20，第一分区10和第二分区20均包括多个触控单元(未图示)；当触控显示面板工作于第一工作模式时，第一分区10的触控单元均采用第一报点频率进行触控采样工作，第二分区20的触控单元均采用第二报点频率进行触控采样工作，第一报点频率与第二报点频率相同或不相同；当触控显示面板工作于第二工作模式时，第一分区10的触控单元均采用第三报点频率进行触控采样工作，第二分区20的触控单元均采用第四报点频率进行触控采样工作，第三报点频率与第四报点频率不相同。
在本实施例中，第一分区10、第二分区20设置有多条交叉的扫描电极Tx和感应电极Rx；其中，位于第一分区10、第二分区20中的扫描电极Tx载有相同或不同驱动频率的扫描信号，且感应电极Rx载有以固定间隔时间被接收的感应信号。
可以理解的是，触控显示面板可以包括触控操作频率较高的分区和触控操作频率较低的分区；第一分区10、第二分区20可以是两个分区中的一种，且第一分区10不同于第二分区20。触控操作频率较高的分区、触控操作频率较低的分区两者均可以但不限于为触控显示面板的上半屏、或者下半屏中的一种；也可以但不限于为触控显示面板的左半屏、或者右半屏中的一种；也可以是触控显示面板的一部分区域、或者另一部分区域，其中，一部分区域与另一 部分区域的面积相同或不同。
在本实施例中，第二工作模式可以理解为第一分区和第二分区分别进行不同报点频率的触控操作，这样一方面可以在第二分区采用高报点频率进行触控操作，同时，在第一分区进行低报点频率的视频放映，这样可以既保障了用户高频触控的体验，又维持了整体触控显示面板的功耗，延长了待机时长，用户体验更佳。而第一工作模式可以理解为整个触控显示面板都采用低触控频率方式，或者，在特定情况下都采用高触控频率方式，或者，第一分区采用低触控频率，而第二分区采用较低触控频率的方式。上述工作模式的介绍仅为举例，可以根据实际需求灵活设置，这里不做限制。
在其中一个实施例中，触控显示面板还包括触控驱动IC30，触控驱动IC30分别与第一分区10和第二分区20的触控单元电连接；当触控显示面板工作于第一工作模式时，触控驱动IC30为第一分区10的触控单元均提供第一驱动频率的触控驱动信号，并为第二分区20的触控单元均提供第二驱动频率的触控驱动信号，第一驱动频率与第二驱动频率相同或不相同；当触控显示面板工作于第二工作模式时，触控驱动IC30为第一分区10的触控单元均提供第三驱动频率的触控驱动信号，并为第二分区20的触控单元均提供第四驱动频率的触控驱动信号，第三驱动频率与第四驱动频率不相同。
在本实施例中，不仅可以采用不同的报点频率进行分区独立触控采样，还可以采用不同的驱动频率进行分区独立驱动扫描。
需要进行说明的是，扫描信号可以但不限于为方波信号，方波信号的频率或者驱动频率越高，扫描触控显示面板所需的每帧时间就越短，也越有利于提高触控显示面板的报点频率。
可以理解的是，触控电极可以但不限于包括扫描电极Tx，还可以包括与扫描电极Tx相对应的感应电极Rx。报点频率可以理解为主要与对应分区的扫描电极Tx被扫描信号SS进行扫描时所用时间的倒数相对应。
基于此，触控操作频率较高的分区具有较高的驱动频率，可以实现较高的报点频率，较高的报点频率可以更快速地响应用户的触控体验；而触控操作频率较低的分区具有较低的驱动频率，可以以显示为主，触控操作为辅，电容电极的充放电速度也较低；因此，触控显示面板既可以保持用户的良好触控体验， 又可以以较低的功耗维持这种状态。
在其中一个实施例中，第一驱动频率与第一报点频率、第二驱动频率与第二报点频率、第三驱动频率与第三报点频率、第四驱动频率与第四报点频率，均符合如下对应关系：
RP＝1/((1/F)*M)
其中，RP为对应的报点频率；F为对应的驱动频率；1/F为对应的驱动周期；M为扫描次数，即一个扫描周期包含驱动周期的数量。M可以但不限于为正整数，例如，1，或者2,或者3，或者4，其可以根据需要进行设定。
在其中一个实施例中，触控驱动IC以非噪音频点配置第一驱动频率、第二驱动频率、第三驱动频率以及第四驱动频率。需要进行说明的是，某些频点的驱动频率容易在信号的处理过程中带来较大的噪音，对信号的处理过程形成相应的干扰，影响触摸坐标计算的精准度，因此，触控驱动IC在配置对应的驱动频率时，可以根据需要，不选用对应的噪音频点。
在其中一个实施例中，多个沿第一方向排列的第一触控电极，和多个沿第二方向排列的第二触控电极，每个触控单元包括一对相对设置的第一触控电极和第二触控电极；触控驱动IC30分别与第一分区10和第二分区20的第一触控电极电连接，用于为第一触控电极提供第一驱动频率、第二驱动频率、第三驱动频率、第四驱动频率中至少一种驱动频率的触控驱动信号；触控驱动IC30还分别与第一分区10和第二分区20的第二触控电极电连接，用于接收来自第一分区和第二分区的第二触控电极产生的混合频率触控信号。
需要进行说明的是，扫描电极Tx、感应电极Rx以条为单位，每条扫描电极Tx可以包括多个沿第二方向SD依次相连的第一透明电极，多条感应电极Rx沿第二方向SD依次设置，每条感应电极Rx可以包括多个沿第一方向FD依次相连的第二透明电极，第一方向FD不同于第二方向SD，第一透明电极、第二透明电极可以但不限于为菱形，也可以为条状等多种形状。其中，第一方向FD可以垂直于第二方向SD。例如，第一方向FD可以为竖直方向，对应地，第二方向SD为水平方向；或者第二方向SD可以为竖直方向，对应地，第一方向FD为水平方向。
需要说明的是，本实施例中需要定位触摸位置时，全部感应电极Rx中的 感应信号以固定间隔时间被同时接收，根据感应信号的变化量以及感应信号的频率来精确快速地实现触摸位置的定位。其中，固定间隔时间为第一分区10的扫描时间，或者第二分区20的扫描时间，或者第一分区10与第二分区20的扫描时间之和；可以理解的是，按照不同的固定间隔时间接收一次感应信号以用于定位触摸位置，也就是说，每一段固定间隔时间进行一次触控采样，以便快速地识别用户的触摸操作，并基于感应信号的变化以及频率计算出触摸位置的坐标，并上报至主机或者应用处理器40。
需要进行说明的是，触控驱动IC30是同时接收第一分区10和第二分区20的触控信号的，而来自于第一分区10的触控信号与来自于第二分区20的触控信号的驱动频率是不相同的(例如工作在第二工作模式时)，因此，不同驱动频率的触控信号进入到触控驱动IC30之后，形成了对应的混合频率触控信号。因此，在触摸坐标的计算过程中，需要用到具有滤波器NBF的触控驱动IC30；其中，滤波器NBF可以但不限于用于分离混合频率触控信号，以对应获取单一频率触控信号，在此基础上，可以按照现有技术对触摸坐标的后续计算。需要进行说明的是，滤波器NBF同时可以过滤掉对一部分噪音干扰，有助于实现触摸坐标的精准计算。
需要说明的是，如果第一分区和第二分区采用相同的驱动频率的扫描信号进行触控扫描时，可以不进行分区独立驱动，而可以进行整面触控驱动，即采用一个相同的驱动频率的触控扫描信号，扫描整个第一分区和第二分区，然后进行触控位置上报。
在其中一个实施例中，第三报点频率与第四报点频率的比值为正整数，或者，第四报点频率与第三报点频率的比值为正整数。例如，其中一个报点频率为120Hz，另一个报点频率为240Hz。
第二方面，本申请提供了一种触控显示装置，其包括任一实施例中的触控显示面板。
可以理解的是，该实施例中提供的触控显示装置，其第一分区10、第二分区20以不同的报点频率进行报点，同样能够以较低的功耗实现良好的触控体验。
可以进行理解的是，本实施例中公开的驱动频率为触控驱动信号的频率。
在其中一个实施例中，沿第一方向FD依次设置的多条扫描电极Tx，这些扫描电极Tx被划分为多组，每组具有相同条数且相邻的扫描电极Tx；位于第一分区10的每组扫描电极Tx载有第三频率的扫描信号；位于第二分区20的每组扫描电极Tx载有第四频率的扫描信号；且第三频率不同于第四频率。
在其中一个实施例中，其中一相邻的两个组中至少有一条被复用的扫描电极Tx。需要进行说明的是，当扫描电极Tx的条数不足以被均分为组的时候，例如，触控显示面板存在总数为17条的扫描电极Tx，以4条扫描电极Tx为一组，应该分为几个组呢，当然是5个组，这样的话，其中有一个组只有一条扫描电极Tx，这时候就需要将与该条扫描电极Tx相邻近的三条扫描电极Tx进行复用，当然，进行复用的该三条扫描电极Tx可以但不限于位于同一组，也可以是位于临近的不同组中的扫描电极Tx。
需要进行说明的是，复用扫描电极Tx的两个组均位于第一分区10或者第二分区20，便于复用的扫描电极Tx载有同一驱动频率的扫描信号，简化线路或者信号设计的复杂度。即复用扫描电极Tx的两个组均位于第一分区10或/和第二分区20。
需要进行说明的是，同组的扫描电极Tx载有相同相位的扫描信号以实现同时扫描同组的扫描电极Tx，加快扫描速度，缩短每帧的扫描时间，提高触控显示面板的报点频率。不同组的扫描电极Tx载有不同相位的扫描信号以实现不同组按照预定顺序进行扫描；该预定顺序可以但不限于沿第一方向FD依次扫描各组，也可以是沿与第一方向FD相反的方向依次扫描各组；还可以是其他间隔性的扫描顺序。
在其中一个实施例中，位于第一分区10的组的数量与位于第二分区20的组的数量可以但不限于为相等，也可以为不相等，可以根据产品或者用户的需求自行调整。
如图2所示，在其中一个实施例中，触控显示面板还包括触控驱动IC30；触控驱动IC30与扫描电极Tx和感应电极Rx连接；触控驱动IC30用于提供扫描信号和感应信号，并按照固定间隔时间接收感应信号以定位对应的触摸位置。
如图2所示，在其中一个实施例中，触控显示面板还包括应用处理器40； 应用处理器40与触控驱动IC30连接；触控驱动IC30上报触摸位置至应用处理器40，且触控驱动IC30根据应用处理器40的分屏模式对应调整第三频率和第四频率。
可以理解的是，触控驱动IC30可以提供对应频率和/或相位的扫描信号，并依据感应信号的变化通过对应的算法计算出触摸位置，例如平面坐标以实现定位，并把触摸位置上报至应用处理器40或者主机。应用处理器40可以基于用户端或者应用端的需求自我调整分屏模式，触控驱动IC30进而根据分屏模式调整对应分区的驱动频率，以提高用户的触控体验感。
在其中一个实施例中，本申请提供了一种触控显示面板的触控驱动方法，触控显示面板包括第一分区10和第二分区20，如图3所示的触控驱动方法包括以下步骤：
步骤S10：触控驱动IC30输出驱动频率相同或者相异的触控驱动信号至对应的第一分区10和第二分区20。
步骤S20：触控驱动IC30接收第一分区10、第二分区20的混合频率触控信号。
步骤S30：触控驱动IC30滤波混合频率触控信号，以对应获得单一频率触控信号。
以及步骤S40：触控驱动IC30根据单一频率触控信号的频率和变化量，计算并以不同报点频率上报触摸坐标。
在其中一个实施例中，第一分区10和第二分20区均包括多个与触控驱动IC电连接的触控单元(未示出)；触控单元用于接入触控驱动信号，以生成对应的触控信号。
具体地，每个触控单元包括一对相对设置的第一触控电极和第二触控电极；第一触控电极用于接入对应的触控驱动信号；第二触控电极用于生成对应的触控信号。
其中，第一触控电极可以但不限于为扫描电极Tx，第二触控电极可以但不限于为感应电极Rx。
在其中一个实施例中，触控驱动IC30输出第三驱动频率的触控驱动信号至第一分区；触控驱动IC30输出第四驱动频率的触控驱动信号至第二分区； 其中，第三驱动频率异于第四驱动频率。
可以理解的是，本实施例提供的触控显示面板的触控驱动方法，第一分区10、第二分区20以不同的报点频率进行报点，同样能够以较低的功耗实现良好的触控体验。
在其中一个实施例中，触控显示面板的报点频率为触控驱动IC30扫描完整触摸屏屏体一帧时间的倒数，触控驱动IC30扫描完整触摸屏屏体一帧时间为：第一自互容切换时间t1、自容扫描耗时t2、第二自互容切换时间t3、互容扫描耗时t4以及干扰(Noise)扫描时间t5之和。针对目前互电容触摸显示屏，其中构成触摸一帧耗(Touch)时最关键为互容扫描耗t4时，其与扫描信号的单一方波耗时T、触摸屏内的扫描电极的条数以及扫描分组息息相关。
例如，触控屏体包含扫描电极Tx/感应电极Rx＝17/37，其中，感应电极Rx为37条，扫描电极Tx为17条，采用4条扫描电极为一组进行扫描，则17条扫描电极需要分成5组，分5次进行扫描，其中第一条扫描电极Tx1至第四条扫描电极Tx4为一组，第五条扫描电极Tx5至第八条扫描电极Tx8为一组，第九条扫描电极Tx9至第十二条扫描电极Tx12为一组，第十三条扫描电极Tx13至第十六条扫描电极Tx16为一组，因此最后只剩下第十七条扫描电极Tx17,则将第十四条扫描电极Tx14至第十七条扫描电极Tx17分为最后一组，相当于第十四条扫描电极Tx14至第十六条扫描电极Tx16扫描了两次。
如此一来，触控屏体上的扫描电极Tx分组完毕，比如第一条扫描电极Tx1至第四条扫描电极Tx4采用相同的一组波形同时去扫描这4条扫描电极Tx，而这一组扫描波形包含的单一方波的数目又是影响这一组波形扫描时间的关键，也就是一组扫描采样时间。因此可以通过调整一组扫描波形内包含的单一方波的数目来控制相应的驱动频率。
一组扫描波形内包含的单一方波的数目越多，相当于采样的时间越长，因此相应的功耗也越大。为了节省功耗，本公开提供一种分屏混合采样率的触摸显示屏，针对类似上下折叠显示触摸屏，当运行分屏多任务操作时，上半屏选择执行普通显示操作任务，下半屏选择执行游戏模式等高要求操作任务；上下半屏的报点频率不一样，上半屏选择执行普通显示操作任务，其报点频率较低，如正常的120Hz；下半屏选择执行游戏模式等高要求操作任务，其报点频率较 高，如240Hz。
本公开在极大的满足了目前电竞、游戏模式下对触控的高报点频率需求，同时尽可能少的增加触摸屏的功耗。
当触摸显示屏上下分屏时，针对执行的不同任务所需要求不同，同一块触摸显示屏，上下半屏具有不同的报点频率。例如，上半屏运行普通操作模式，其触摸屏执行普通的报点频率；下半屏运行高频操作模式，其触摸屏执行高的报点频率。
其中，在该实施例中，第一自互容切换时间t1为示波器的实测值。自容扫描耗时t2为2段自容波形，每段波形有80个脉冲(pulse)即等于2*80*(2*3RC)。第二自互容切换时间t3为示波器的实测值。互容扫描耗时t4为17条扫描电极TX，4条为一组，分成5组，每段波形有64个pulse即64*4*5*(2*3RC)。以及干扰(Noise)扫描时间t5为示波器的实测值。
报点频率表格1-1
  单位 正常计算结果 互容TX pulse 64→44
3RC us 1.42 1.42
扫描电极TX的数量 条 17 17
感应电极RX的数量 条 37 37
模拟仿真频率 kHz 352 352
单一方波耗时T us 2.84 2.84
第一自互容切换时间t1 us 102 102
自容耗时t2 us 454.4 454.4
第二自互容切换时间t3 us 110 110
互容耗时t4 us 36352 24992
干扰扫描时间t5 us 1000 1000
扫描一帧耗时T10 us 5301.6 4165.6
报点频率 Hz 189 240
其中，单一方波耗时T通常取决触摸屏的3RC时间常数，当显示面板(Panel)的设计确定后，3RC通常也相应确定。
如报点频率表格1-1所示，当一组扫描波形内包含的单一方波的数目由64 减少为44时，互容耗时t4也从3635.2us减少到2499.2us，进而将扫描一帧耗时T10也降低到了4165.6us，从而将报点频率提高到了240Hz。
如图4所示，扫描一帧耗时T10与扫描信号的频率F相关，其包括各个组的扫描时间之和，例如第一组的扫描时间为T11、第一组的扫描时间为T12、以此类推，第K组的扫描时间为T1K；其中，K为整数。
本公开还提供过一种实现分屏混合采样率的触摸显示屏，分别调节上下两个半屏的一组扫描波形内包含的单一方波的数目来调整相应的扫描采样时间，从而调整相应的报点频率。
比如，如上所述，我们在本实施例中，上下半屏包含的扫描电极Tx条数基本相同，相当于对所有扫描电极Tx的条数进行对半分；并且对上、下半屏中的扫描电极Tx分别采用同样的单一扫描波形频率；通过设置驱动方案时，上半屏的一组扫描波形内包含的单一方波数目较大，比如为M，因此一组波形以及整个上半屏互容扫描采样时间较长，相应的报点频率较低，如120Hz。
同时下半屏的一组扫描波形内包含的单一扫描数目较小，比如为N,因此一组波形以及整个下半屏互容扫描采样时间较短，相应的报点频率较高，比如为240Hz，其中M＞N。
本发明支持分屏操作时，在保证拥有畅快的使用体验，比如电竞，游戏模式下具有高采样率，同时又不过多的增加功耗；针对分屏操作时，不同屏幕区域的应用需求不同，采用不同的报点频率(Report Rate)来尽可能满足降低功耗的需求。
如图5所示，上半屏扫描一帧耗时T20与对应分区的扫描信号的频率F1相关，其包括位于对应分区各个组的扫描时间之和，例如第一组的扫描时间为T21、第一组的扫描时间为T22、以此类推，第K组的扫描时间为T2K；其中，K为整数。
同样的道理，下半屏扫描一帧耗时T30与对应分区的扫描信号的频率F2相关，其包括位于对应分区各个组的扫描时间之和，例如第一组的扫描时间为T31、第一组的扫描时间为T32、以此类推，第K组的扫描时间为T3K；其中，K为整数。
本公开在极大的满足了目前电竞、游戏模式下对触控的高报点频率需求， 同时尽可能少的增加触摸屏的功耗。
当触摸显示屏上下分屏时，针对执行的不同任务所需要求不同，同一块触摸显示屏，上下半屏具有不同的报点频率。例如，上半屏运行普通操作模式，其触摸屏执行普通的报点频率；下半屏运行高频操作模式，其触摸屏执行高的报点频率。
本公开的触摸显示屏具有分屏混合采样率，同一块屏幕，上下半屏运行不同的显示操作任务时，同时具备不同的触控报点频率。例如，相对于传统的一块触摸显示屏只能具有一种触控报点频率，在普通模式下，整屏为一般的报点频率，如60Hz/120Hz；游戏模式下，整屏切换为高报点频率，如180Hz，240Hz，甚至高于240Hz。
本公开支持分屏操作时，支持分屏混合触控报点频率；在保证拥有畅快的使用体验，比如电竞，游戏模式下具有高采样率，同时尽可能少的增加触摸屏的功耗。
正常的触摸显示屏的报点频率就是整屏扫描一次，而且是要扫描完一块完整的触摸显示屏的所有扫描电极Tx，然后计算触摸位置坐标，最后触控驱动IC30向主机(Host)上报触摸位置坐标点位；因此传统的触摸显示屏，一块完整的显示屏幕，整个屏幕通常为一个固定的触控报点频率，比如120Hz/240Hz，只能二选一；或者整屏切换，如显示的刷新率为60Hz，整个屏幕的触控采样为120Hz；当显示的刷新率切换为90Hz，整个屏幕的触控报点频率切换为180Hz。
可以理解的是，在本申请的实施例中，主机相当于应用处理器40。
本公开提供一种分屏混合采样率的触摸显示屏，比如其扫描电极Tx/感应电极Rx的条数分别为20/40；当全屏运行普通的工作模式，第一条扫描电极Tx1至第二十条扫描电极Tx20的所有通道，触控驱动IC30均使用一个固定的驱动频率去扫描，如200KHz的方波；整屏的报点频率为一个特定值，如120Hz。
具体示例描述如下：正常模式下，第一条扫描电极Tx1至第二十条扫描电极Tx20，共20条扫描电极Tx，形成20个扫描通道，分组后依次进行扫描，扫描完全部20条扫描电极Tx，然后触控驱动IC30根据容值改变的位置来计算出对应的坐标，产生中断信号，并上报给Host。
本公开提供的一种分屏混合采样率的触摸显示屏，触控驱动IC30扫描完一半屏体的扫描通道后即上报一次坐标点位，上下两个半屏分别独立扫描，并分别独立上报坐标点位。
可以理解的是，触控驱动IC30设置有滤波器NBF；滤波器NBF对经过处理的感应信号进行滤波，触控驱动IC30识别并分别独立处理第一分区10的触摸定位和/或者第二分区20的触摸定位。
具体地，如图6所示，当发生触摸时，第一分区10中频率为F1的扫描信号、第二分区20中频率为F2的扫描信号经过互容MC耦合，生成对应的感应信号，感应信号被触控驱动IC30中的前端模拟放大器AFE接收并处理后，成为混频的感应信号，然后触控驱动IC(Touch IC)30内部设置有特定的电容、电阻电路构成的滤波器NBF，其中，滤波器NBF为窄带宽滤波器，其可以对接收到的信号中预先设定的特定频率成分的信号通过，而极大的衰减或者抑制其他频率成分的信号。其中，对信号进行滤波是信号处理的前提与基础，滤波的主要目的是为了滤掉无用的干扰信号或者与目标信号不相干的信号，进而得到系统需要的信号。
触控驱动IC30内部针对接收到的模拟电信号(特定电压幅值/一定频率)进行过滤，是对特定频率的信号通过IC内部的滤波器NBF，从而从接收到的众多的信号，这些信号包括目标信号/各种噪音(Noise)信号NS，再从这些信号中截取自己想要的部分。
进而可以识别出对应的感应信号来自于第一分区10或者第二分区20，并分别独立处理第一分区10的触摸定位和/或者第二分区20的触摸定位。
通常，经过Touch IC内部模拟滤波后得到的模拟信号经过模数转换器ADC转换后得到数字信号(例如，10101，或者10111)，经过数字滤波器DF的数字滤波后，得到Touch IC内部目标的用于计算触摸坐标所需的数据。
数字滤波的核心是数字信号处理器(DSP)，Touch IC内部设置DSP单元。数字滤波就是由数字乘法器、加法器等单元组成的一种算法或者装置，对输入的离散数字信号代码进行处理，处理就是按照预先编制的程序进行计算。
以上下折叠显示屏为例进行说明，如电极条数为扫描电极Tx/感应电极Rx为20/40；设计要求为横向通道为扫描电极Tx，纵向通道为感应电极Rx；第 一条扫描电极Tx1至第十条扫描电极Tx10位于上半屏,第十一条扫描电极Tx11至第二十条扫描电极Tx20位于下半屏；第一条扫描电极Tx1至第十条扫描电极Tx10和第十一条扫描电极Tx11至第二十条扫描电极Tx20分开独立扫描，第一条感应电极Rx1至第四十条感应电极Rx40一起接收。
当手机AP(应用处理器40)端的运行模式由一块完整的屏幕切换为上下分屏任务工作时，AP端Host通知触控驱动IC30切换为上下半屏两个独立的工作模式；并选择上半屏运行正常的显示触摸模式，下半屏运行游戏模式。
触控驱动IC30根据AP端下发的指令进行切换，配置其第一条扫描电极Tx1至第十条扫描电极Tx10为一个固定的驱动频率，如200KHz，以维持一个普通的报点频率；当扫描完前十个通道第一条扫描电极Tx1至第十条扫描电极Tx10(上半屏扫描)时，触控驱动IC30即上报一次坐标位置，其报点频率可以为普通值，如为120Hz。
同时下半屏运行游戏模式，配置其第十一条扫描电极Tx11至第二十条扫描电极Tx20为不同于上半屏的驱动频率，如250KHz；在第一条扫描电极Tx1至第十条扫描电极Tx10之间扫描时，第十一条扫描电极Tx11至第二十条扫描电极Tx20亦同时进行扫描(下半屏扫描)，当完成后十个通道时，亦上报一次坐标位置，其报点频率较高为，如240Hz。
触控的报点频率通常由扫描完目标数目的所有条扫描电极Tx所需时间的倒数。
横向连续导通的为扫描电极Tx的电极通道，纵向连续导通的为感应电极Rx的电极通道，上下半屏分别采用一种单一方波驱动频率。
本公开的触摸屏在实际工作中，上下半屏可以采用相同的周期(Cycle)数目的波形去扫描，由于上下半屏的一组波形内设定的单一方波数目不同，因此，其相应的触控报点频率不同。
当触摸显示屏为上下分屏，分别执行的不同任务，运行不同的模式；同一块触摸显示屏，上下半屏具有不同的触控报点频率。
本公开实现了同一块触摸显示屏，具备分屏混合报点频率，即针对屏幕的上下半屏不同区域，具备不同的触控报点频率。
本发明在极大的满足了目前电竞、游戏模式下对触控高报点频率需求，同 时尽可能少的增加触摸屏的功耗；从而极大减小了智能手机整机的功耗，增加了智能手机的续航时间。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种触控显示面板，其中，至少工作于第一工作模式和第二工作模式；
    所述触控显示面板包括第一分区和第二分区，所述第一分区和所述第二分区均包括多个触控单元；
    当所述触控显示面板工作于第一工作模式时，所述第一分区的触控单元均采用第一报点频率进行触控采样工作，所述第二分区的触控单元均采用第二报点频率进行触控采样工作，所述第一报点频率与所述第二报点频率相同或不相同；
    当所述触控显示面板工作于第二工作模式时，所述第一分区的触控单元均采用第三报点频率进行触控采样工作，所述第二分区的触控单元均采用第四报点频率进行触控采样工作，所述第三报点频率与所述第四报点频率不相同。
  2. 根据权利要求1所述的触控显示面板，其中，所述触控显示面板还包括触控驱动IC，所述触控驱动IC分别与所述第一分区和所述第二分区的触控单元电连接；
    当所述触控显示面板工作于第一工作模式时，所述触控驱动IC为所述第一分区的触控单元均提供第一驱动频率的触控驱动信号，并为所述第二分区的触控单元均提供第二驱动频率的触控驱动信号，所述第一驱动频率与所述第二驱动频率相同或不相同；
    当所述触控显示面板工作于第二工作模式时，所述触控驱动IC为所述第一分区的触控单元均提供第三驱动频率的触控驱动信号，并为所述第二分区的触控单元均提供第四驱动频率的触控驱动信号，所述第三驱动频率与所述第四驱动频率不相同。
  3. 根据权利要求2所述的触控显示面板，其中，所述第一驱动频率与所述第一报点频率、所述第二驱动频率与所述第二报点频率、所述第三驱动频率与所述第三报点频率、所述第四驱动频率与所述第四报点频率，均符合如下对应关系：
    RP＝1/((1/F)*M)
    其中，RP为对应的报点频率；F为对应的驱动频率；1/F为对应的驱动周期；M为扫描次数，即在一个扫描周期中驱动周期的数量。
  4. 根据权利要求3所述的触控显示面板，其中，所述第一分区和所述第二分区采用相同的所述扫描次数。
  5. 根据权利要求2所述的触控显示面板，其中，所述触控驱动IC以非噪音频点配置所述第一驱动频率、所述第二驱动频率、所述第三驱动频率以及所述第四驱动频率。
  6. 根据权利要求1所述的触控显示面板，其中，所述触控显示面板包括：多个沿第一方向排列的第一触控电极，和多个沿第二方向排列的第二触控电极，每个所述触控单元包括一对相对设置的第一触控电极和第二触控电极；
    所述触控驱动IC分别与所述第一分区和所述第二分区的第一触控电极电连接，用于为第一触控电极提供第一驱动频率、第二驱动频率、第三驱动频率、第四驱动频率中至少一种驱动频率的触控驱动信号；
    所述触控驱动IC还分别与所述第一分区和所述第二分区的第二触控电极电连接，用于接收来自所述第一分区和所述第二分区的第二触控电极产生的混合频率触控信号。
  7. 根据权利要求6所述的触控显示面板，其中，所述触控驱动IC包括滤波器；
    所述滤波器用于分离所述混合频率触控信号，以对应获取单一频率触控信号，所述单一频率触控信号用于获取所述第一分区或所述第二分区触控位置的采样信息。
  8. 一种触控显示装置，其中，包括如权利要求1所述的触控显示面板。
  9. 根据权利要求8所述的触控显示面板，其中，所述第三报点频率与所述第四报点频率的比值为正整数，或者，所述第四报点频率与所述第三报点频率的比值为正整数。
  10. 根据权利要求9所述的触控显示面板，其中，所述触控显示面板还包括触控驱动IC，所述触控驱动IC分别与所述第一分区和所述第二分区的触控单元电连接；
    当所述触控显示面板工作于第一工作模式时，所述触控驱动IC为所述第一分区的触控单元均提供第一驱动频率的触控驱动信号，并为所述第二分区的触控单元均提供第二驱动频率的触控驱动信号，所述第一驱动频率与所述第二 驱动频率相同或不相同；
    当所述触控显示面板工作于第二工作模式时，所述触控驱动IC为所述第一分区的触控单元均提供第三驱动频率的触控驱动信号，并为所述第二分区的触控单元均提供第四驱动频率的触控驱动信号，所述第三驱动频率与所述第四驱动频率不相同。
  11. 根据权利要求10所述的触控显示面板，其中，所述第一驱动频率与所述第一报点频率、所述第二驱动频率与所述第二报点频率、所述第三驱动频率与所述第三报点频率、所述第四驱动频率与所述第四报点频率，均符合如下对应关系：
    RP＝1/((1/F)*M)
    其中，RP为对应的报点频率；F为对应的驱动频率；1/F为对应的驱动周期；M为扫描次数，即在一个扫描周期中驱动周期的数量。
  12. 根据权利要求11所述的触控显示面板，其中，所述第一分区和所述第二分区采用相同的所述扫描次数。
  13. 根据权利要求9所述的触控显示面板，其中，所述触控驱动IC以非噪音频点配置所述第一驱动频率、所述第二驱动频率、所述第三驱动频率以及所述第四驱动频率。
  14. 根据权利要求9所述的触控显示面板，其中，所述触控显示面板包括：多个沿第一方向排列的第一触控电极，和多个沿第二方向排列的第二触控电极，每个所述触控单元包括一对相对设置的第一触控电极和第二触控电极；
    所述触控驱动IC分别与所述第一分区和所述第二分区的第一触控电极电连接，用于为第一触控电极提供第一驱动频率、第二驱动频率、第三驱动频率、第四驱动频率中至少一种驱动频率的触控驱动信号；
    所述触控驱动IC还分别与所述第一分区和所述第二分区的第二触控电极电连接，用于接收来自所述第一分区和所述第二分区的第二触控电极产生的混合频率触控信号。
  15. 根据权利要求14所述的触控显示面板，其中，所述触控驱动IC包括滤波器；
    所述滤波器用于分离所述混合频率触控信号，以对应获取单一频率触控信 号，所述单一频率触控信号用于获取所述第一分区或所述第二分区触控位置的采样信息。
  16. 根据权利要求14所述的触控显示面板，其中，所述触控驱动IC以固定间隔时间接收所述混合频率触控信号。
  17. 一种触控显示面板的触控驱动方法，其中，所述触控显示面板包括第一分区和第二分区，所述触控驱动方法包括：
    所述触控驱动IC输出驱动频率相同或者相异的触控驱动信号至对应的所述第一分区和所述第二分区；
    所述触控驱动IC接收所述第一分区、所述第二分区的混合频率触控信号；
    所述触控驱动IC滤波所述混合频率触控信号，以对应获得单一频率触控信号；以及
    所述触控驱动IC根据所述单一频率触控信号的频率和变化量，计算并以不同报点频率上报触摸坐标。
  18. 根据权利要求17所述的触控驱动方法，其中，所述第一分区和所述第二分区均包括多个与所述触控驱动IC电连接的触控单元；
    所述触控单元用于接入所述触控驱动信号，以生成对应的触控信号。
  19. 根据权利要求18所述的触控驱动方法，其中，每个所述触控单元包括一对相对设置的第一触控电极和第二触控电极；所述第一触控电极用于接入对应的所述触控驱动信号；所述第二触控电极用于生成对应的所述触控信号。
  20. 根据权利要求17所述的触控驱动方法，其中，所述触控驱动IC输出第三驱动频率的触控驱动信号至所述第一分区；所述触控驱动IC输出第四驱动频率的触控驱动信号至所述第二分区；其中，所述第三驱动频率异于所述第四驱动频率。
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