WO2020015180A1 - 触控驱动方法 - Google Patents

触控驱动方法 Download PDF

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Publication number
WO2020015180A1
WO2020015180A1 PCT/CN2018/107824 CN2018107824W WO2020015180A1 WO 2020015180 A1 WO2020015180 A1 WO 2020015180A1 CN 2018107824 W CN2018107824 W CN 2018107824W WO 2020015180 A1 WO2020015180 A1 WO 2020015180A1
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Prior art keywords
touch driving
phase
touch
signal
signals
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PCT/CN2018/107824
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English (en)
French (fr)
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康惠洋
陈明暐
李文东
陈蕾
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深圳市华星光电技术有限公司
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Priority to US16/307,471 priority Critical patent/US20210081070A1/en
Publication of WO2020015180A1 publication Critical patent/WO2020015180A1/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
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • 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
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • 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
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Definitions

  • the present invention relates to the technical field of touch driving, and in particular, to a touch driving method.
  • touch panels with touch functions have been widely used.
  • the touch panel can perform input through fingers, stylus, etc., and the operation is more intuitive and simple.
  • Touch panels can be divided into four types: resistive, capacitive, optical, and sonic according to different sensing technologies.
  • the mainstream touch technologies are capacitive, and capacitive is divided into self-capacitance and mutual capacitance.
  • capacitive touch panel is mainly a mutual capacitance type.
  • the advantage of mutual capacitance is that it can realize multi-touch.
  • a mutual capacitance touch panel generally includes a plurality of touch driving electrodes 100 extending in a lateral direction and a plurality of touch receiving electrodes 200 extending in a longitudinal direction.
  • the touch driving electrodes 100 and the touch receiving electrodes 200 They are insulated from each other. Because the human body carries moisture and is an excellent conductor, if the human body touches the touch panel, the capacitance between the finger and the electrode will increase.
  • the touch driving signal Tx '(m) transmitted by the touch IC is a square wave signal.
  • the touch IC performs a composite processing on the touch driving signal Tx '(m): every adjacent four touch driving signals Tx' (m) Processed into a signal packet.
  • the four touch driving signals Tx '(1), Tx' (2), Tx '(3), and Tx' (4) in a signal packet are simultaneously sent out in the form of square waves.
  • the four touch driving signals Tx '(1), Tx' (2), Tx '(3), and Tx' (4) in the signal packet are divided into the first stage (S (1)) '), Phase 2 (S (2)'), Phase 3 (S (3) '), and Phase 4 (S (4)').
  • the phase of Tx '(4) is opposite; in the second stage (S (2)'), the phase of the second touch driving signal Tx '(2) in the signal packet is in contact with the other three touches.
  • the control driving signals Tx '(1), Tx' (3), and Tx '(4) have opposite phases; in the third phase (S (3)'), the third touch driving signal in the signal packet The phase of Tx '(3) is opposite to that of the other three touch driving signals Tx' (1), Tx '(2), and Tx' (4); in the fourth stage (S (4) '), The phase of the fourth touch driving signal Tx '(4) in this signal packet is opposite to that of the other three touch driving signals Tx' (1), Tx '(2), and Tx' (3).
  • the purpose of the present invention is to provide a touch driving method, which can reduce the external radiation and electromagnetic interference of touch driving signals without increasing the cost of the touch panel, and effectively improve the anti-interference performance of the touch panel.
  • the present invention provides a touch driving method, which includes the following steps:
  • Step S1 providing a touch panel
  • the touch panel includes a plurality of spaced touch driving electrodes, a plurality of spaced touch sensing electrodes, and a touch IC;
  • the touch driving electrode is insulated from the touch sensing electrode
  • Step S2 controlling the touch IC to generate a plurality of touch driving signals equal to the number of the touch driving electrodes, dividing adjacent a touch driving signals into one signal packet, and a is greater than 3 A positive integer, and composite processing is performed on the a touch driving signals in each of the signal packets, so that the a touch driving signals in the same signal packet are simultaneously sent to the corresponding a touch driving electrodes in the form of a sine wave
  • the a touch driving signals in the same signal packet are sequentially divided into k phases in time sequence, and k is a positive integer less than or equal to a.
  • the first The phases of the k touch driving signals are opposite to those of the other a-1 touch driving signals.
  • the number of sine wave peaks included in the a touch driving signals in the same signal packet are all equal.
  • Any one of the a touch driving signals in the same signal packet includes the same number of sine wave peaks at each stage.
  • the step S2 divides the four adjacent touch driving signals into one signal packet, and the four touch driving signals in the same signal packet are all divided into four phases in order in time sequence: the first Phase, Phase 2, Phase 3, and Phase 4.
  • the phase of the first touch driving signal and the phase of the second touch driving signal, the phase of the third touch driving signal, and the fourth touch driving in the same signal packet are opposite;
  • phase of the second touch driving signal and the phase of the first touch driving signal, the phase of the third touch driving signal, and the fourth touch driving in the same signal packet The phases of the signals are opposite;
  • phase of the third touch driving signal and the phase of the first touch driving signal, the phase of the second touch driving signal, and the fourth touch driving in the same signal packet The phases of the signals are opposite;
  • the phase of the fourth touch driving signal and the phase of the first touch driving signal, the phase of the second touch driving signal, and the third touch driving in the same signal packet The phases of the signals are reversed.
  • the step S2 divides five adjacent touch driving signals into one signal packet, and the five touch driving signals in the same signal packet are divided into five stages in sequence in time order.
  • the step S2 divides the six adjacent touch driving signals into one signal packet, and the six touch driving signals in the same signal packet are sequentially divided into six stages in time sequence.
  • the step S2 divides seven adjacent touch driving signals into one signal packet, and the seven touch driving signals in the same signal packet are divided into seven stages in sequence in time order.
  • the step S2 divides the eight adjacent touch driving signals into one signal packet, and the eight touch driving signals in the same signal packet are sequentially divided into eight phases in time sequence.
  • a touch driving method provided by the present invention improves existing touch driving signals in the form of square waves into touch driving signals in the form of sine waves, and performs composite processing on the touch driving signals.
  • the a touch driving signals in the same signal packet are sent to the corresponding a touch driving electrodes in the form of a sine wave at the same time, and the a touch driving signals in the same signal packet are sequentially divided in time sequence.
  • FIG. 1 is a schematic structural diagram of a conventional mutual capacitance type touch panel
  • FIG. 2 is a schematic diagram of composite processing of a touch driving signal by a touch IC in the prior art
  • FIG. 3 is a schematic diagram of performing a Fourier transform on a square wave
  • FIG. 4 is a flowchart of a touch driving method according to the present invention.
  • step S1 of a touch driving method is a schematic diagram of step S1 of a touch driving method according to the present invention.
  • FIG. 6 is a schematic diagram of step S2 of the touch driving method of the present invention.
  • the present invention provides a touch driving method, which includes the following steps:
  • Step S1 providing a touch panel.
  • the touch panel includes a plurality of spaced touch driving electrodes 1, a plurality of spaced touch sensing electrodes 2, and a touch IC 3.
  • the touch driving electrodes 1 and the touch sensing electrodes 2 are insulated and cross.
  • Step S2 in combination with FIG. 5 and FIG. 6, controlling the touch IC 3 to generate a plurality of touch driving signals equivalent to the number of the touch driving electrodes 1, and dividing adjacent a touch driving signals into One signal packet TP, a is a positive integer greater than 3, and a touch driving signal in each of the signal packets TP is compounded, so that the one touch driving signal in the same signal packet TP is a sine wave at the same time.
  • the a touch driving signals in the same signal packet TP are sequentially divided into k phases in time sequence, and k is a positive integer less than or equal to a In the k-th stage S (k), the phase of the k-th touch driving signal Tx (k) in the same signal packet TP is opposite to that of other a-1 touch-driving signals.
  • the step S2 divides four adjacent touch driving signals into a signal packet TP, and the same signal packet
  • the four touch driving signals in the TP are divided into 4 phases in order in time order: Phase 1 S (1), Phase 2 S (2), Phase 3 S (3), and Phase 4 S ( 4).
  • the phase of the first touch driving signal Tx (1) and the second touch driving signal Tx (2) in the same signal packet TP The phase of the third touch driving signal Tx (3) and the phase of the fourth touch driving signal Tx (4) are opposite;
  • phase of the second touch driving signal Tx (2) and the phase of the first touch driving signal Tx (1) and the third in the same signal packet TP The phase of the touch driving signal Tx (3) and the phase of the fourth touch driving signal Tx (4) are opposite;
  • phase of the third touch driving signal Tx (3) and the phase of the first touch driving signal Tx (1) and the second in the same signal packet TP The phase of the touch driving signal Tx (2) and the phase of the fourth touch driving signal Tx (4) are opposite;
  • phase of the fourth touch driving signal Tx (4) and the phase of the first touch driving signal Tx (1) and the second in the same signal packet TP The phase of the touch driving signal Tx (2) and the phase of the third touch driving signal Tx (3) are opposite.
  • the number of sine wave peaks included in the a touch driving signals in the same signal packet TP are all equal, for example, the third stage S (3) shown in FIG. 6 .
  • the first touch driving signal Tx (1), the second touch driving signal Tx (2), the third touch driving signal Tx (3), and the fourth touch driving signal Tx (4) include 8 sine wave crests.
  • Any one of the a touch driving signals in the same signal packet TP includes the same number of sine wave peaks in each stage.
  • the driving signal Tx (1) includes eight sine wave peaks in the first stage S (1), the second stage S (2), the third stage S (3), and the fourth stage S (4).
  • the step S2 may divide five adjacent touch driving signals into one signal packet TP, and the five touch driving signals in the same signal packet TP are divided into 5 stages in sequence in time sequence: Phase 1, the phase of the first touch driving signal and the phase of the second touch driving signal, the phase of the third touch driving signal, and the phase of the fourth touch driving signal in the same signal packet TP And the phase of the fifth touch drive signal is opposite; in the second phase, the phase of the second touch drive signal and the phase of the first touch drive signal and the third touch in the same signal package TP The phase of the driving signal, the phase of the fourth touch driving signal and the phase of the fifth touch driving signal are opposite; and so on, in the fifth stage, the fifth touch driving signal in the same signal packet TP The phase of is opposite to the phase of the first touch drive signal, the phase of the second touch drive signal, the phase of the third touch drive signal, and the phase of the fourth touch drive signal.
  • step S2 the six adjacent touch driving signals can be divided into a signal packet TP, and the six touch driving signals in the same signal packet TP are all divided into six stages in sequence in time order: In the first stage, the phase of the first touch driving signal and the phase of the second touch driving signal, the phase of the third touch driving signal, and the phase of the fourth touch driving signal in the same signal packet TP The phase, the phase of the fifth touch driving signal and the phase of the sixth touch driving signal are opposite; in the second phase, the phase of the second touch driving signal in the same signal packet TP is the same as the phase of the first touch driving signal.
  • phase of the control drive signal, the phase of the third touch drive signal, the phase of the fourth touch drive signal, the phase of the fifth touch drive signal, and the phase of the sixth touch drive signal are opposite; and so on
  • phase 6 the phase of the sixth touch driving signal and the phase of the first touch driving signal, the phase of the second touch driving signal, and the third touch driving in the same signal packet TP Phase of the signal, phase of the 4th touch drive signal, and phase of the 5th touch drive signal The phases are opposite.
  • the step S2 may further divide 7 adjacent touch driving signals into a signal packet TP, and the 7 touch driving signals in the same signal packet TP are divided into 7 phases in sequence in time order:
  • the phase of the first touch driving signal and the phase of the second touch driving signal, the phase of the third touch driving signal, and the phase of the fourth touch driving signal in the same signal packet TP Phase, phase of the fifth touch drive signal, phase of the sixth touch drive signal, and phase of the seventh touch drive signal are opposite;
  • the second stage the second touch in the same signal packet TP Phase of the control drive signal and the phase of the first touch drive signal, the phase of the third touch drive signal, the phase of the fourth touch drive signal, the phase of the fifth touch drive signal, and the sixth touch
  • the phase of the control driving signal and the phase of the seventh touch driving signal are opposite; and so on, in the seventh stage, the phase of the seventh touch driving signal in the same signal packet TP is the same as that of the first touch driving Phase of the signal, phase of the second touch drive signal, and phase of the third touch
  • the step S2 may further divide eight adjacent touch driving signals into one signal packet TP, and the eight touch driving signals in the same signal packet TP are sequentially divided into eight stages in order of time: In the first stage, the phase of the first touch driving signal and the phase of the second touch driving signal, the phase of the third touch driving signal, and the phase of the fourth touch driving signal in the same signal packet TP Phase, phase of the fifth touch drive signal, phase of the sixth touch drive signal, phase of the seventh touch drive signal, and phase of the eight touch drive signal are opposite; in the second stage, the The phase of the second touch drive signal and the phase of the first touch drive signal, the phase of the third touch drive signal, the phase of the fourth touch drive signal, and the fifth touch in the same signal packet TP The phase of the control drive signal, the phase of the 6th touch drive signal, the phase of the 7th touch drive signal, and the phase of the 8th touch drive signal are opposite; and so on, in the 8th stage, the same signal The phase of the 8th touch drive signal in the package TP and the phase of
  • the waveform of a sine wave is a simple fundamental waveform.
  • the existing touch drive signal in the form of a square wave is improved to a touch drive signal in the form of a sine wave, which can make the touch drive signal less susceptible to harmonic interference.
  • the control driving signals are compound processed so that a touch driving signal in the same signal packet TP is sent to the corresponding a touch driving electrode 1 in the form of a sine wave at the same time, and the a touch signals in the same signal packet TP
  • the control driving signals are all divided into k stages in time sequence. In the kth stage S (k), the phase of the kth touch driving signal Tx (k) in the same signal packet TP and other a-1 The phases of the touch driving signals are opposite.
  • the touch driving method of the present invention can reduce external radiation and electromagnetic interference of the touch driving signals without increasing the cost of the touch panel, and effectively improve the anti-interference performance of the touch panel.
  • the touch driving method of the present invention improves the existing touch driving signal in the form of a square wave into a touch driving signal in the form of a sine wave, and performs composite processing on the touch driving signals so that the same signal package
  • the a touch driving signals in the same are sent to the corresponding a touch driving electrodes in the form of a sine wave at the same time, and the a touch driving signals in the same signal packet are divided into k stages in time sequence.
  • the touch driving method of the present invention can reduce the external radiation and electromagnetic interference of touch driving signals without increasing the cost of the touch panel, and effectively improve the anti-interference performance of the touch panel.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种触控驱动方法，将现有的方波形式的触控驱动信号改善为正弦波形式的触控驱动信号，并对触控驱动信号做复合处理，使得同一信号包内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极，且所述同一信号包内的a条触控驱动信号均被按时间顺序依次分为k个阶段，在第k阶段，所述同一信号包内的第k条触控驱动信号的相位与其它a-1条触控驱动信号的相位相反；由于正弦波的波形是单纯的基波波形，不容易受到谐波干扰，所以本方法能够在不增加触控面板成本的情况下，减少触控驱动信号对外产生辐射及电磁干扰，有效提高触控面板的抗干扰性能。

Description

触控驱动方法 技术领域
本发明涉及触控驱动技术领域，尤其涉及一种触控驱动方法。
背景技术
随着便携式电子显示设备的发展，具有触控功能的触控面板(Touch panel)得到了广泛地应用。触控面板可通过手指、触控笔等执行输入，操作更加直观、简便。
触控面板依感应技术不同可分为电阻式、电容式、光学式、音波式四种，其中主流的触控技术为电容式，电容式又分为自电容式和互电容式，目前市场上的电容式触控面板主要为互电容式，互电容的优点在于可实现多点触控。
请参阅图1，互电容式触控面板通常包括多条沿横向延伸的触控驱动电极100以及多条沿纵向延伸的触控接收电极200，所述触控驱动电极100与触控接收电极200之间相互绝缘。由于人体会携带水分，也是优秀导体，故人体若触摸触控面板，手指与电极之间的电容会增加，此时只要触控面板内的触控IC向触控驱动电极100发射触控驱动信号Tx’(m)(m＝1、2、3、4、5……)，并控制触控接收电极200接收触控感应信号Rx’(n)(n＝1、2、3、4、5……)，通过调查触控感应信号Rx’(n)静电容量变大的坐标，便可以得出触摸点的具***置。现有技术中，所述触控IC发射的触控驱动信号Tx’(m)为方波信号。
结合图1与图2，为了提高互电容式触控面板的抗干扰性能，触控IC会对触控驱动信号Tx’(m)进行复合处理：将每相邻4条触控驱动信号Tx’(m)处理为一信号包，一信号包内的4条触控驱动信号Tx’(1)、Tx’(2)、Tx’(3)及Tx’(4)同时以方波的形式发出，且该信号包内的4条触控驱动信号Tx’(1)、Tx’(2)、Tx’(3)及Tx’(4)按时间顺序依次分为第1阶段(S(1)’)、第2阶段(S(2)’)、第3阶段(S(3)’)与第4阶段(S(4)’)。在所述第1阶段(S(1)’)，该信号包内的第1条触控驱动信号Tx’(1)的相位与其它3条触控驱动信号Tx’(2)、Tx’(3)、Tx’(4)的相位相反；在所述第2阶段(S(2)’)，该信号包内的第2条触控驱动信号Tx’(2)的相位与其它3条触控驱动信号Tx’(1)、Tx’(3)、Tx’(4)的相位相反；在所述第3阶段(S(3)’)，该信号包内的第3条触 控驱动信号Tx’(3)的相位与其它3条触控驱动信号Tx’(1)、Tx’(2)、Tx’(4)的相位相反；在所述第4阶段(S(4)’)，该信号包内的第4条触控驱动信号Tx’(4)的相位与其它3条触控驱动信号Tx’(1)、Tx’(2)、Tx’(3)的相位相反。
如图3所示，方波经傅里叶变换后是由多条不同频率、不同振幅的正弦波叠加而成的，极易受谐波干扰，所以即使驱动IC对触控驱动信号Tx’(m)进行了上述如图2所示的复合处理，仍易向外产生辐射及电磁干扰。
发明内容
本发明的目的在于提供一种触控驱动方法，能够在不增加触控面板成本的情况下，减少触控驱动信号对外产生辐射及电磁干扰，有效提高触控面板的抗干扰性能。
为实现上述目的，本发明提供一种触控驱动方法，包括如下步骤：
步骤S1、提供触控面板；
所述触控面板包括多条间隔排布的触控驱动电极、多条间隔排布的触控感应电极以及触控IC；
所述触控驱动电极与触控感应电极绝缘交叉；
步骤S2、控制所述触控IC生成与所述触控驱动电极的数量对等的多条触控驱动信号，将相邻的a条触控驱动信号划分为一个信号包，a为大于3的正整数，并对各个所述信号包内的a条触控驱动信号做复合处理，使得同一信号包内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极，且所述同一信号包内的a条触控驱动信号均被按时间顺序依次分为k个阶段，设k为小于等于a的正整数，在第k阶段，所述同一信号包内的第k条触控驱动信号的相位与其它a-1条触控驱动信号的相位相反。
在所述第k阶段，所述同一信号包内的a条触控驱动信号所包括的正弦波波峰的数量均相等。
所述同一信号包内的a条触控驱动信号中的任意一条在各个阶段所包括的正弦波波峰的数量均相等。
优选地，所述步骤S2将相邻的4条触控驱动信号划分为一个信号包，所述同一信号包内的4条触控驱动信号均被按时间顺序依次分为4个阶段：第1阶段、第2阶段、第3阶段及第4阶段。
在所述第1阶段，所述同一信号包内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位及第4条触控驱动信号的相位相反；
在所述第2阶段，所述同一信号包内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位及第4条触控驱动信号的相位相反；
在所述第3阶段，所述同一信号包内的第3条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位及第4条触控驱动信号的相位相反；
在所述第4阶段，所述同一信号包内的第4条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位及第3条触控驱动信号的相位相反。
可选地，所述步骤S2将相邻的5条触控驱动信号划分为一个信号包，所述同一信号包内的5条触控驱动信号均被按时间顺序依次分为5个阶段。
可选地，所述步骤S2将相邻的6条触控驱动信号划分为一个信号包，所述同一信号包内的6条触控驱动信号均被按时间顺序依次分为6个阶段。
可选地，所述步骤S2将相邻的7条触控驱动信号划分为一个信号包，所述同一信号包内的7条触控驱动信号均被按时间顺序依次分为7个阶段。
所述步骤S2将相邻的8条触控驱动信号划分为一个信号包，所述同一信号包内的8条触控驱动信号均被按时间顺序依次分为8个阶段。
本发明的有益效果：本发明提供的一种触控驱动方法，将现有的方波形式的触控驱动信号改善为正弦波形式的触控驱动信号，并对触控驱动信号做复合处理，使得同一信号包内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极，且所述同一信号包内的a条触控驱动信号均被按时间顺序依次分为k个阶段，在第k阶段，所述同一信号包内的第k条触控驱动信号的相位与其它a-1条触控驱动信号的相位相反；由于正弦波的波形是单纯的基波波形，不容易受到谐波干扰，所以本发明的触控驱动方法能够在不增加触控面板成本的情况下，减少触控驱动信号对外产生辐射及电磁干扰，有效提高触控面板的抗干扰性能。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的互电容式触控面板的结构简图；
图2为现有技术中触控IC对触控驱动信号进行复合处理的示意图；
图3为对方波做傅里叶变换的示意图；
图4为本发明的触控驱动方法的流程图；
图5为本发明的触控驱动方法的步骤S1的示意图；
图6为本发明的触控驱动方法的步骤S2的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请同时参阅图4至图6，本发明提供一种触控驱动方法，包括如下步骤：
步骤S1、提供触控面板。
如图5所示，所述触控面板包括多条间隔排布的触控驱动电极1、多条间隔排布的触控感应电极2以及触控IC 3。
所述触控驱动电极1与触控感应电极2绝缘交叉。
步骤S2、结合图5与图6，控制所述触控IC 3生成与所述触控驱动电极1的数量对等的多条触控驱动信号，将相邻的a条触控驱动信号划分为一个信号包TP，a为大于3的正整数，并对各个所述信号包TP内的a条触控驱动信号做复合处理，使得同一信号包TP内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极1，且所述同一信号包TP内的a条触控驱动信号均被按时间顺序依次分为k个阶段，设k为小于等于a的正整数，在第k阶段S(k)，所述同一信号包TP内的第k条触控驱动信号Tx(k)的相位与其它a-1条触控驱动信号的相位相反。
优选地，为了保证所述触控IC 3对触控驱动信号做复合处理的速度足够快，所述步骤S2将相邻的4条触控驱动信号划分为一个信号包TP，所述同一信号包TP内的4条触控驱动信号均被按时间顺序依次分为4个阶段：第1阶段S(1)、第2阶段S(2)、第3阶段S(3)及第4阶段S(4)。
如图6所示，在所述第1阶段S(1)，所述同一信号包TP内的第1条触控驱动信号Tx(1)的相位与第2条触控驱动信号Tx(2)的相位、第3条触控驱动信号Tx(3)的相位及第4条触控驱动信号Tx(4)的相位相反；
在所述第2阶段S(2)，所述同一信号包TP内的第2条触控驱动信号Tx(2)的相位与第1条触控驱动信号Tx(1)的相位、第3条触控驱动信号Tx(3)的相位及第4条触控驱动信号Tx(4)的相位相反；
在所述第3阶段S(3)，所述同一信号包TP内的第3条触控驱动信号Tx(3)的相位与第1条触控驱动信号Tx(1)的相位、第2条触控驱动信 号Tx(2)的相位及第4条触控驱动信号Tx(4)的相位相反；
在所述第4阶段S(4)，所述同一信号包TP内的第4条触控驱动信号Tx(4)的相位与第1条触控驱动信号Tx(1)的相位、第2条触控驱动信号Tx(2)的相位及第3条触控驱动信号Tx(3)的相位相反。
进一步地：
在所述第k阶段S(k)，所述同一信号包TP内的a条触控驱动信号所包括的正弦波波峰的数量均相等，例如图6所示出的第3阶段S(3)，第1条触控驱动信号Tx(1)、第2条触控驱动信号Tx(2)、第3条触控驱动信号Tx(3)及第4条触控驱动信号Tx(4)均包括8个正弦波波峰。
所述同一信号包TP内的a条触控驱动信号中的任意一条在各个阶段所包括的正弦波波峰的数量均相等，例如图6所示出的同一信号包TP内的第1条触控驱动信号Tx(1)在第1阶段S(1)、第2阶段S(2)、第3阶段S(3)及第4阶段S(4)均包括8个正弦波波峰。
比照图5与图6：
所述步骤S2可将相邻的5条触控驱动信号划分为一个信号包TP，所述同一信号包TP内的5条触控驱动信号均被按时间顺序依次分为5个阶段：在第1阶段，所述同一信号包TP内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位及第5条触控驱动信号的相位相反；在第2阶段，所述同一信号包TP内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位及第5条触控驱动信号的相位相反；以此类推，在第5阶段，所述同一信号包TP内的第5条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位、第3条触控驱动信号的相位及第4条触控驱动信号的相位相反。
所述步骤S2还可将相邻的6条触控驱动信号划分为一个信号包TP，所述同一信号包TP内的6条触控驱动信号均被按时间顺序依次分为6个阶段：在第1阶段，所述同一信号包TP内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位及第6条触控驱动信号的相位相反；在第2阶段，所述同一信号包TP内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位及第6条触控驱动信号的相位相反；以此类推，在第6阶段，所述同一信号包TP内的第6条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位、第3条触 控驱动信号的相位、第4条触控驱动信号的相位及第5条触控驱动信号的相位相反。
所述步骤S2还可将相邻的7条触控驱动信号划分为一个信号包TP，所述同一信号包TP内的7条触控驱动信号均被按时间顺序依次分为7个阶段：在第1阶段，所述同一信号包TP内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位、第6条触控驱动信号的相位及第7条触控驱动信号的相位相反；在第2阶段，所述同一信号包TP内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位、第6条触控驱动信号的相位及第7条触控驱动信号的相位相反；以此类推，在第7阶段，所述同一信号包TP内的第7条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位及6条触控驱动信号的相位相反。
所述步骤S2还可将相邻的8条触控驱动信号划分为一个信号包TP，所述同一信号包TP内的8条触控驱动信号均被按时间顺序依次分为8个阶段：在第1阶段，所述同一信号包TP内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位、第6条触控驱动信号的相位、第7条触控驱动信号的相位及第8条触控驱动信号的相位相反；在第2阶段，所述同一信号包TP内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位、第6条触控驱动信号的相位、第7条触控驱动信号的相位及第8条触控驱动信号的相位相反；以此类推，在第8阶段，所述同一信号包TP内的第8条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位、第3条触控驱动信号的相位、第4条触控驱动信号的相位、第5条触控驱动信号的相位、第6条触控驱动信号的相位及第7条触控驱动信号的相位相反。
正弦波的波形是单纯的基波波形，将现有的方波形式的触控驱动信号改善为正弦波形式的触控驱动信号能够使得触控驱动信号不容易受到谐波干扰，加上对触控驱动信号做复合处理，使得同一信号包TP内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极1，且所述同一信号包TP内的a条触控驱动信号均被按时间顺序依次分为k个阶段，在 第k阶段S(k)，所述同一信号包TP内的第k条触控驱动信号Tx(k)的相位与其它a-1条触控驱动信号的相位相反，本发明的触控驱动方法能够在不增加触控面板成本的情况下，减少触控驱动信号对外产生辐射及电磁干扰，有效提高触控面板的抗干扰性能。
综上所述，本发明的触控驱动方法，将现有的方波形式的触控驱动信号改善为正弦波形式的触控驱动信号，并对触控驱动信号做复合处理，使得同一信号包内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极，且所述同一信号包内的a条触控驱动信号均被按时间顺序依次分为k个阶段，在第k阶段，所述同一信号包内的第k条触控驱动信号的相位与其它a-1条触控驱动信号的相位相反；由于正弦波的波形是单纯的基波波形，不容易受到谐波干扰，所以本发明的触控驱动方法能够在不增加触控面板成本的情况下，减少触控驱动信号对外产生辐射及电磁干扰，有效提高触控面板的抗干扰性能。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明的权利要求的保护范围。

Claims (9)

  1. 一种触控驱动方法，包括如下步骤：
    步骤S1、提供触控面板；
    所述触控面板包括多条间隔排布的触控驱动电极、多条间隔排布的触控感应电极以及触控IC；
    所述触控驱动电极与触控感应电极绝缘交叉；
    步骤S2、控制所述触控IC生成与所述触控驱动电极的数量对等的多条触控驱动信号，将相邻的a条触控驱动信号划分为一个信号包，a为大于3的正整数，并对各个所述信号包内的a条触控驱动信号做复合处理，使得同一信号包内的a条触控驱动信号同时以正弦波的形式发送给对应的a条触控驱动电极，且所述同一信号包内的a条触控驱动信号均被按时间顺序依次分为k个阶段，设k为小于等于a的正整数，在第k阶段，所述同一信号包内的第k条触控驱动信号的相位与其它a-1条触控驱动信号的相位相反。
  2. 如权利要求1所述的触控驱动方法，其中，在所述第k阶段，所述同一信号包内的a条触控驱动信号所包括的正弦波波峰的数量均相等。
  3. 如权利要求2所述的触控驱动方法，其中，所述同一信号包内的a条触控驱动信号中的任意一条在各个阶段所包括的正弦波波峰的数量均相等。
  4. 如权利要求1所述的触控驱动方法，其中，所述步骤S2将相邻的4条触控驱动信号划分为一个信号包，所述同一信号包内的4条触控驱动信号均被按时间顺序依次分为4个阶段：第1阶段、第2阶段、第3阶段及第4阶段。
  5. 如权利要求4所述的触控驱动方法，其中，在所述第1阶段，所述同一信号包内的第1条触控驱动信号的相位与第2条触控驱动信号的相位、第3条触控驱动信号的相位及第4条触控驱动信号的相位相反；
    在所述第2阶段，所述同一信号包内的第2条触控驱动信号的相位与第1条触控驱动信号的相位、第3条触控驱动信号的相位及第4条触控驱动信号的相位相反；
    在所述第3阶段，所述同一信号包内的第3条触控驱动信号的相位与第1条触控驱动信号的相位、第2条触控驱动信号的相位及第4条触控驱动信号的相位相反；
    在所述第4阶段，所述同一信号包内的第4条触控驱动信号的相位与 第1条触控驱动信号的相位、第2条触控驱动信号的相位及第3条触控驱动信号的相位相反。
  6. 如权利要求1所述的触控驱动方法，其中，所述步骤S2将相邻的5条触控驱动信号划分为一个信号包，所述同一信号包内的5条触控驱动信号均被按时间顺序依次分为5个阶段。
  7. 如权利要求1所述的触控驱动方法，其中，所述步骤S2将相邻的6条触控驱动信号划分为一个信号包，所述同一信号包内的6条触控驱动信号均被按时间顺序依次分为6个阶段。
  8. 如权利要求1所述的触控驱动方法，其中，所述步骤S2将相邻的7条触控驱动信号划分为一个信号包，所述同一信号包内的7条触控驱动信号均被按时间顺序依次分为7个阶段。
  9. 如权利要求1所述的触控驱动方法，其中，所述步骤S2将相邻的8条触控驱动信号划分为一个信号包，所述同一信号包内的8条触控驱动信号均被按时间顺序依次分为8个阶段。
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