WO2016078074A1 - 一种触控面板抗干扰的方法、触控面板及显示器 - Google Patents

一种触控面板抗干扰的方法、触控面板及显示器 Download PDF

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Publication number
WO2016078074A1
WO2016078074A1 PCT/CN2014/091877 CN2014091877W WO2016078074A1 WO 2016078074 A1 WO2016078074 A1 WO 2016078074A1 CN 2014091877 W CN2014091877 W CN 2014091877W WO 2016078074 A1 WO2016078074 A1 WO 2016078074A1
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Prior art keywords
signal
valid
received
received signal
touch panel
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PCT/CN2014/091877
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English (en)
French (fr)
Inventor
叶成亮
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深圳市华星光电技术有限公司
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Priority to US14/433,644 priority Critical patent/US20160147357A1/en
Publication of WO2016078074A1 publication Critical patent/WO2016078074A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Definitions

  • the present invention relates to the field of touch panels, and in particular to a method for resisting interference of a touch panel, a touch panel and a display.
  • the existing touch panel In order to reduce the interference of the LCD, the existing touch panel generally adopts methods such as frequency hopping, touch model optimization, and back-end control calculation optimization, or the sensor of the touch panel is divided into two parts, and the main sensor senses from a finger or the like. The touch operation of the conductor and the interference signal, the secondary sensor only perceives the interference signal, and then subtracts the two to obtain a pure touch signal.
  • the sub sensor is installed in an area that is not touched, that is, an area where the LCD is not displayed, so that the display area of the LCD is reduced, and accordingly, the total area of the LCD is also reduced, which will be let out.
  • a portion of the area is given to the secondary sensor, and a small area of the secondary sensor cannot accurately collect the interference signal of the entire LCD panel.
  • the technical problem to be solved by the present invention is to provide a touch panel anti-interference method, a touch panel and a display, which can enable the touch panel to collect interference signals in the same region and acquire a pure touch signal.
  • a technical solution adopted by the present invention is to provide a touch panel anti-interference method, wherein the method includes: receiving a signal and detecting whether the received signal includes a valid signal; if the received signal does not include an effective signal Collecting at least two noise signals periodically and averaging at least two noise signals to obtain an average value signal, and using the average value signal as the first signal; if the received signal includes a valid signal, storing the received signal as a second signal; performing a difference operation on the first signal and the second signal and obtaining a difference signal, and using the difference signal as a valid signal.
  • the method for detecting whether the received signal includes a valid signal comprises: comparing the received signal with a pre-stored threshold signal to determine whether the received signal is smaller than a threshold signal; and when the received signal is smaller than the threshold signal, determining that the received signal does not include a valid signal; When the signal is greater than or equal to the threshold signal, it is determined that the received signal includes a valid signal.
  • a technical solution adopted by the present invention is to provide a method for resisting interference of a touch panel, the method comprising: receiving a signal and detecting whether the received signal includes a valid signal; if the received signal does not include a valid signal, saving The received signal is used as the first signal; if the received signal includes the valid signal, the received signal is saved as the second signal; the first signal and the second signal are processed to obtain the valid signal.
  • the method for detecting whether the received signal includes a valid signal comprises: comparing the received signal with a pre-stored threshold signal to determine whether the received signal is smaller than a threshold signal; and when the received signal is smaller than the threshold signal, determining that the received signal does not include a valid signal; When the signal is greater than or equal to the threshold signal, it is determined that the received signal includes a valid signal.
  • the first signal and the second signal are processed by performing a difference calculation operation on the first signal and the second signal, and obtaining a difference signal, and using the difference signal as a valid signal.
  • the method further includes: if the received signal does not include the valid signal, periodically collecting at least two noise signals and averaging the at least two noise signals to obtain an average signal, and using the average signal as the first signal.
  • the effective signal is a touch signal.
  • a touch panel which comprises: an array of distributed sensors for receiving signals; a processor, and an array of distributed sensors.
  • the connection is configured to detect whether the received signal includes a valid signal. If the received signal does not include the valid signal, the received signal is saved as the first signal; if the received signal includes the valid signal, the received signal is saved as the second signal; the processor is further used to A signal and a second signal are processed to obtain a valid signal.
  • the detector further includes a memory for pre-storing the threshold signal; the processor is further configured to compare the received signal with the pre-stored threshold signal to determine whether the received signal is smaller than the threshold signal; and when the received signal is smaller than the threshold signal, determine The received signal does not include a valid signal; when the received signal is greater than or equal to the threshold signal, it is determined that the received signal includes a valid signal.
  • the processor further includes a subtractor; the subtractor is configured to perform a difference operation on the first signal and the second signal, and obtain a difference signal, and use the difference signal as a valid signal.
  • the processor is further configured to periodically acquire at least two noise signals and average the at least two noise signals to obtain an average value signal when the received signal does not include the valid signal, and use the average value signal as the average signal.
  • the first signal is further configured to periodically acquire at least two noise signals and average the at least two noise signals to obtain an average value signal when the received signal does not include the valid signal, and use the average value signal as the average signal. The first signal.
  • a display including: a display main body and a touch panel disposed on a surface of the display main body;
  • the control panel comprises: an array of distributed sensors for receiving signals; and a processor connected to the array of distributed sensors for detecting whether the received signal includes a valid signal, and if the received signal does not include a valid signal, storing the received signal as the first signal If the received signal includes a valid signal, the received signal is saved as a second signal; the processor is further configured to process the first signal and the second signal to obtain a valid signal.
  • the detector further includes a memory for pre-storing the threshold signal; the processor is further configured to compare the received signal with the pre-stored threshold signal to determine whether the received signal is smaller than the threshold signal; and when the received signal is smaller than the threshold signal, determine The received signal does not include a valid signal; when the received signal is greater than or equal to the threshold signal, it is determined that the received signal includes a valid signal.
  • the processor further includes a subtractor; the subtractor is configured to perform a difference operation on the first signal and the second signal, and obtain a difference signal, and use the difference signal as a valid signal.
  • the processor is further configured to periodically acquire at least two noise signals and average the at least two noise signals to obtain an average value signal when the received signal does not include the valid signal, and use the average value signal as the average signal.
  • the first signal is further configured to periodically acquire at least two noise signals and average the at least two noise signals to obtain an average value signal when the received signal does not include the valid signal, and use the average value signal as the average signal. The first signal.
  • the present invention receives a signal and detects whether the received signal includes a valid signal; if the received signal does not include a valid signal, the received signal is saved as the first signal; if the received signal includes the valid signal The signal saves the received signal as a second signal; the first signal and the second signal are processed to obtain a valid signal.
  • the present embodiment collects the interference signal generated by the LCD by using the same time zone and the same area, that is, the sensor of the same area receives the first signal and the second signal when the conductor touches and does not touch, and then obtains the signal by the signal processing.
  • Pure and effective signal therefore, it is not necessary to divide the sensor into the interference signal acquisition area and the effective signal acquisition area, so that the area of the touch panel display area is increased to the sum of the original interference signal acquisition area and the effective signal acquisition area, and the touch is improved.
  • the aperture ratio of the control panel; and the interference signal is collected by the entire panel, so that the acquisition of the interference signal is more accurate, and the effective signal obtained is more pure.
  • FIG. 1 is a flow chart of a first embodiment of a method for resisting interference of a touch panel according to the present invention
  • FIG. 2 is a schematic diagram showing the coordinates of a signal signal "time value" in the first embodiment of the present invention
  • FIG. 3 is a flow chart of a second embodiment of a method for resisting interference of a touch panel according to the present invention.
  • FIG. 4 is a schematic diagram showing coordinates of a threshold signal setting "signal value-time" in the second embodiment of the present invention.
  • FIG. 5 is a schematic diagram of performing a difference calculation between a first signal and a second signal in step 304 of the second embodiment of the present invention
  • FIG. 6 is a schematic diagram showing matching of a first signal and a second signal in a second embodiment of the present invention
  • FIG. 7 is a flow chart of a third embodiment of a method for resisting interference of a touch panel according to the present invention.
  • FIG. 8 is a schematic structural view of a fourth embodiment of a touch panel according to the present invention.
  • Figure 9 is a schematic view showing the structure of a fifth embodiment of a display of the present invention.
  • a first embodiment of a method for resisting interference of a touch panel of the present invention includes:
  • Step 101 Receive a signal and detect whether the received signal includes a valid signal; if the received signal does not include a valid signal, proceed to step 102; if the received signal includes a valid signal, proceed to step 103;
  • the receiving signal is in the state that the device is turned on, and the signal is always received regardless of whether a valid signal is received or not;
  • the effective signal is mainly a touch signal, that is, a signal acquired by the sensor when the finger or other conductor contacts the touch panel;
  • the touch screen is divided into a vector pressure sensing technology touch screen, a resistance technology touch screen, and a capacitive technology touch screen.
  • Infrared technology touch screen, surface acoustic wave technology touch screen, etc. so the effective signal can also be a pressure signal, a current signal, an infrared signal, an acoustic signal or other signals, such as a radio frequency signal;
  • the noise signal mainly comes from the repeated closing or switching of the gate line and the data line of the LCD.
  • the signal value of the noise signal is discontinuous and undulating.
  • the amplitude is small, as shown in Figure 2, so it can be judged whether the received signal is a valid signal by detecting the continuity of the received signal value or the magnitude of the amplitude.
  • Step 102 save the received signal as the first signal
  • the processor can analyze the noise signal collected by the sensor, because the noise signal is generated due to the grid line and data of the LCD.
  • the line is repeatedly turned off or switched. Therefore, the noise signal may be a periodically changing signal or a noise signal, and has corresponding noise characteristics or noise characteristics, so the processor can only collect signals in one cycle or acquire signals in a period of time.
  • the signal is analyzed, and the noise signal is stored for one cycle or a period of time according to the noise feature or the noise characteristic; of course, the signal can be collected and saved for a long time due to whether the signal is periodically changed or randomly changed.
  • Step 103 save the received signal as the second signal
  • the received signal is stored as the second signal; since the noise signal is always present, when the valid signal is collected when the sensor receives the valid signal, the noise is also collected at the same time.
  • the signal, so the second signal is a combination of a valid signal and a noise signal.
  • Step 104 Process the first signal and the second signal to obtain a valid signal.
  • the processing method may be that the second signal is filtered, and the amplitude is corrected to obtain a pure effective signal; or the first signal is compared, and the same signal as the first signal is filtered in the second signal.
  • the embodiment receives the signal and detects whether the received signal includes a valid signal; if the received signal does not include the valid signal, the received signal is saved as the first signal; if the received signal includes the valid signal, the received signal is saved as the second Signal; processing the first signal and the second signal to obtain a valid signal.
  • the present embodiment collects the interference signal generated by the LCD by using the same time zone and the same area, that is, the sensor of the same area receives the first signal and the second signal when the conductor touches and does not touch, and then obtains the signal by the signal processing.
  • Pure and effective signal therefore, it is not necessary to divide the sensor into the interference signal acquisition area and the effective signal acquisition area, so that the area of the touch panel display area is increased to the sum of the original interference signal acquisition area and the effective signal acquisition area, and the touch is improved.
  • the aperture ratio of the control panel; and the interference signal is collected by the entire panel, so that the acquisition of the interference signal is more accurate, and the effective signal obtained is more pure.
  • a second embodiment of a method for resisting interference of a touch panel of the present invention includes:
  • Step 301 Comparing the received signal with the pre-stored threshold signal, determining whether the received signal is less than the threshold signal, and if so, proceeding to step 302; if not, proceeding to step 303;
  • the amplitude of the threshold signal is set according to the first signal and the second signal, and is generally between the first signal and the second signal; as shown in FIG. 4, the first signal is a noise signal, The signal value is discontinuous, undulating, and the amplitude is small; the second signal is the sum of the effective signal and the noise signal, and the second signal is also fluctuating due to the presence of the noise signal, but the second signal.
  • the amplitude is large, so that a threshold signal between the first signal and the second signal amplitude can be set according to the amplitudes of the first signal and the second signal, and saved, and the signal is received when the signal is received.
  • the threshold signal is compared to determine whether the received signal is the first signal or the second signal.
  • Step 302 When the received signal is smaller than the threshold signal, determine that the received signal does not include the valid signal and save the received signal as the first signal;
  • Step 303 When the received signal is greater than or equal to the threshold signal, determine that the received signal includes a valid signal and save the received signal as the second signal;
  • the maximum value, the minimum value, or the average value of the first signal and the second signal may be One is compared with the threshold signal; for example, when the maximum value of the received signal is less than the threshold signal, it is determined that the received signal is a noise signal and is used as the first signal; when the minimum value of the received signal is greater than or equal to the threshold signal, the determination is The received signal is the sum of the valid signal and the noise signal and serves as the second signal.
  • Step 304 Perform a difference calculation operation on the first signal and the second signal, and obtain a difference signal, and use the difference signal as a valid signal.
  • FIG. 5(a) is a schematic diagram of a first signal coordinate
  • FIG. 5(b) is a second signal coordinate diagram
  • FIG. 5(c) is a schematic diagram of an effective signal coordinate
  • the acquisition is time-sharing, so the two signals do not match in the time coordinates (X-axis in the figure), but since the generation of the first signal is periodic, and the noise in the second signal is in one cycle
  • the first signals are substantially the same.
  • the plurality of extreme values of the first signal may be compared with the plurality of extreme values of the second signal, so that the first signal and the second signal may be periodically matched to determine each Anomalous noise at each cycle time;
  • the first signal and the second signal are subjected to a difference calculation operation, and according to the matched first signal and the second signal, the signal of each time point is correspondingly subtracted, that is, the amplitude of the first extreme value of the second signal Subtracting the amplitude of the first extreme value of the first signal, subtracting the amplitude of the second extreme value of the second signal from the amplitude of the second extreme value of the first signal, and so on, so as to obtain the difference signal, and the difference is obtained
  • the signal acts as a valid signal.
  • the extreme values of the respective signals are matched correspondingly, and the extreme values of the first signal and the second signal of the first signal of the solid line are shown.
  • the matching is performed, and the first signal of the broken line is not matched with the second signal, so the first signal and the second signal are subjected to the difference operation only when the first signal and the extreme value of the second signal are matched.
  • the present embodiment determines whether the received signal is a valid signal by comparing the received signal with the threshold signal, and stores the received noise signal as the first signal when the valid signal is not received.
  • the first signal and the second signal are processed by matching the extremum, and the first signal and the second signal are subjected to the difference calculation to filter the first signal from the second signal. Therefore, obtaining a pure effective signal; matching by determining the extremum of the first signal and the second signal, so that when the first signal is screened in the second signal, the signals corresponding to each time in the same period can be accurately filtered.
  • the amplitude is not only to filter the average or approximate value of a first signal, so that the matching of the first signal and the second signal is more prepared, the screening is more precise, and the effective signal obtained is more pure.
  • a third embodiment of a method for resisting interference of a touch panel of the present invention includes:
  • Step 701 Receive a signal and detect whether the received signal includes a valid signal; if the received signal does not include a valid signal, proceed to step 702; if the received signal includes a valid signal, proceed to step 703;
  • Step 702 periodically collect at least two noise signals and perform averaging operation on at least two noise signals to obtain an average value signal, and use the average value signal as the first signal;
  • the noise signals generated at different positions and at different times of the touch panel may be different, so in order to more easily acquire the noise signal and filter the noise from the effective signal.
  • the embodiment adopts a method of periodically collecting at least two noise signals and averaging;
  • the method of comparing with the threshold signal in the second embodiment may also be used.
  • the received signal is smaller than the threshold signal, it is determined that the received signal is a noise signal, and the noise signal is periodically collected. : The reception of the signal is received at the moment, but the acquisition signal is periodic;
  • each noise signal is averaged and saved as a first signal with each of the previously acquired noise signals, so that the first signal in the memory is continuously updated, The new noise signal changes, it can be expected that when the noise signal is collected enough, the first signal in the memory will remain stable;
  • the period of collecting the noise signal can be arbitrarily set. The smaller the period, the more accurate the collected noise signal. When the period is small enough, it can be regarded as continuous acquisition, that is, the continuous or non-continuous signal collected can be integrated. Average, this will make the collected noise signal more accurate.
  • Step 703 save the received signal as the second signal
  • Step 704 Processing the first signal and the second signal to obtain a valid signal.
  • the first signal is an average of the plurality of noise signals obtained by periodic sampling
  • the second signal is subtracted by a fixed average value, thereby obtaining a valid signal.
  • the noise signal when the valid signal is not received, the noise signal is periodically sampled, the plurality of noise signals are averaged, and the average signal is used as the first signal.
  • the first signal is more convenient and faster to be obtained.
  • the first signal and the second signal are processed, since the first signal is an average signal of a plurality of noise signals, it is easier to perform screening.
  • the first signal is filtered out in the two signals, which avoids the cumbersome process of comparing extreme values and matching, so that the touch panel has a correspondingly faster response to the second signal, thereby reducing the burden on the processor.
  • a fourth embodiment of a touch panel includes: an array of sensors 801 and a processor 802, each row of sensors connected to the processor 802 through a data line;
  • the array-distributed sensor 801 is configured to receive a signal
  • the processor 802 is configured to detect whether the received signal includes a valid signal, and if the received signal does not include the valid signal, save the received signal as the first signal; if the received signal includes the valid signal, save the received signal as the second signal;
  • the processor 802 is further configured to process the first signal and the second signal to obtain a valid signal.
  • the processor is further configured to compare the received signal with the pre-stored threshold signal to determine whether the received signal is smaller than the threshold signal; when the received signal is smaller than the threshold signal, determine that the received signal does not include the valid signal; when the received signal is greater than When the threshold signal is equal to or equal to, it is determined that the received signal includes a valid signal.
  • the processor further includes a subtractor; the subtractor is configured to perform the difference operation on the first signal and the second signal, and obtain the difference signal, and use the difference signal as the effective signal.
  • the processor is further configured to periodically acquire at least two noise signals and average the at least two noise signals to obtain an average signal when the received signal does not include the valid signal, and average The value signal is used as the first signal.
  • a touch panel according to the present embodiment is a terminal based on the touch panel anti-interference method according to the foregoing embodiment. Therefore, the foregoing embodiments are also applicable to the present embodiment.
  • the present embodiment detects whether a valid signal is received; when the valid signal is not received, the noise signal is collected as the first signal; when the valid signal is received, the effective signal and the noise signal are collected as the first Two signals; processing the first signal and the second signal to obtain a valid signal.
  • the present embodiment collects the interference signal generated by the LCD by using the same time zone and the same area, that is, the sensor of the same area receives the first signal and the second signal when the conductor touches and does not touch, and then obtains the signal by the signal processing.
  • Pure and effective signal therefore, it is not necessary to divide the sensor into the interference signal acquisition area and the effective signal acquisition area, so that the area of the touch panel display area is increased to the sum of the original interference signal acquisition area and the effective signal acquisition area, and the touch is improved.
  • the aperture ratio of the control panel; and the interference signal is collected by the entire panel, so that the acquisition of the interference signal is more accurate, and the effective signal obtained is more pure.
  • a fifth embodiment of a display of the present invention includes:
  • the touch panel is a touch panel according to any one of Embodiments 1 to 4, and details are not described herein again.
  • the display of the present embodiment includes a touch panel, which detects whether a valid signal is received by detecting the noise signal; when the valid signal is not received, the noise signal is collected as the first signal; When the signal is received, the effective signal and the noise signal are collected as the second signal; the first signal and the second signal are processed to obtain a valid signal.
  • the present embodiment collects the interference signal generated by the LCD by using the same time zone and the same area, that is, the sensor of the same area receives the first signal and the second signal when the conductor touches and does not touch, and then obtains the signal by the signal processing.
  • Pure and effective signal therefore, it is not necessary to divide the sensor into the interference signal acquisition area and the effective signal acquisition area, so that the area of the touch panel display area is increased to the sum of the original interference signal acquisition area and the effective signal acquisition area, and the touch is improved.
  • the aperture ratio of the control panel; and the interference signal is collected by the entire panel, so that the acquisition of the interference signal is more accurate, and the effective signal obtained is more pure.

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Abstract

一种触控面板抗干扰的方法、触控面板以及显示器，该方法包括：检测是否接收到有效信号（101）；在未接收到有效信号时，采集杂讯信号作为第一信号（102）；在接收到有效信号时，采集有效信号和杂讯信号作为第二信号（103）；将第一信号和第二信号进行处理，获取有效信号（104）。该方法能够通过分时同区域来采集LCD产生的干扰信号，再通过信号处理获取纯净的有效信号，提高了触控面板的开口率，使干扰信号的采集更加准确，获取更加纯净的有效信号。

Description

一种触控面板抗干扰的方法、触控面板及显示器
【技术领域】
本发明涉及触控面板领域，特别是涉及一种触控面板抗干扰的方法、触控面板及显示器。
【背景技术】
在触控面板领域，无论是内嵌式或者外挂式的触控面板，都会收到来自LCD的干扰（noise），干扰的来源一般是栅线（gate line）和数据线（data line）的反复关闭或者切换造成的。
为了减少LCD的干扰，现有的触控面板一般会采用跳频、触控模型优化、后段控制计算优化等方法，或者将触控面板的传感器分位两部分，主传感器感知来自手指或其他导体的触控操作和干扰信号，副传感器仅感知干扰信号，然后将两者相减，而从获得纯净的触控信号。
通过上述的方法，会将副传感器安装在不被触控的区域，即LCD没有显示的区域，这样就会减小LCD的显示区域，相应地，LCD的总面积也会减小，将让出一部分面积给副传感器，并且小面积的副传感器不能准确的收集整个LCD面板的干扰信号。
【发明内容】
本发明主要解决的技术问题是提供一种触控面板抗干扰的方法、触控面板及显示器，能够使触控面板分时同区域的采集干扰信号，获取纯净的触控信号。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种触控面板抗干扰的方法，其中，该方法包括：接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；将第一信号和第二信号进行求差值运算并获得差值信号，并将差值信号作为有效信号。
其中，检测接收信号是否包括有效信号的方法包括：将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号；当接收信号小于阈值信号时，判定接收信号不包括有效信号；当接收信号大于或等于阈值信号时，判定接收信号包括有效信号。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种触控面板抗干扰的方法，该方法包括：接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；将第一信号和第二信号进行处理，获取有效信号。
其中，检测接收信号是否包括有效信号的方法包括：将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号；当接收信号小于阈值信号时，判定接收信号不包括有效信号；当接收信号大于或等于阈值信号时，判定接收信号包括有效信号。
其中，将第一信号和第二信号进行处理是：将第一信号和第二信号进行求差值运算并获得差值信号，并将差值信号作为有效信号。
其中，方法进一步包括：若接收信号不包括有效信号，周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号。
其中，有效信号是触控信号。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种触控面板，其特征在于，该控制面板包括：阵列分布的传感器，用于接收信号；处理器，与阵列分布的传感器连接，用于检测接收信号是否包括有效信号，若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；处理器还用于将第一信号和第二信号进行处理，获取有效信号。
其中，检测器还包括一存储器，存储器用于预存阈值信号；处理器还用于将将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号；当接收信号小于阈值信号时，判定接收信号不包括有效信号；当接收信号大于或等于阈值信号时，判定接收信号包括有效信号。
其中，处理器还包括一减法器；减法器用于将第一信号和第二信号进行求差运算并获得差值信号，并将差值信号作为有效信号。
其中，处理器进一步用于在接收信号不包括有效信号时，周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种显示器，该显示器包括：显示器主体和设置于显示器主体表面的触控面板； 该控制面板包括：阵列分布的传感器，用于接收信号；处理器，与阵列分布的传感器连接，用于检测接收信号是否包括有效信号，若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；处理器还用于将第一信号和第二信号进行处理，获取有效信号。
其中，检测器还包括一存储器，存储器用于预存阈值信号；处理器还用于将将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号；当接收信号小于阈值信号时，判定接收信号不包括有效信号；当接收信号大于或等于阈值信号时，判定接收信号包括有效信号。
其中，处理器还包括一减法器；减法器用于将第一信号和第二信号进行求差运算并获得差值信号，并将差值信号作为有效信号。
其中，处理器进一步用于在接收信号不包括有效信号时，周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号。
本发明的有益效果是：区别于现有技术的情况，本发明通过接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；将第一信号和第二信号进行处理，获取有效信号。采用此种手段，本实施方式通过分时同区域来采集LCD产生的干扰信号，即利用同一区域的传感器在导体触摸时和未触摸时分别接收第一信号和第二信号，再通过信号处理获取纯净的有效信号，因此，无需将传感器分为干扰信号采集区和有效信号采集区，这样使触控面板显示区域的面积增大为原有干扰信号采集区和有效信号采集区的总和，提高触控面板的开口率；并且利用整个面板采集干扰信号，使干扰信号的采集更加准确，获取的有效信号更加纯净。
【附图说明】
图1是本发明一种触控面板抗干扰的方法的第一实施方式流程图；
图2是本发明第一实施方式中杂讯信号“信号值-时间”的坐标示意图；
图3是本发明一种触控面板抗干扰的方法的第二实施方式流程图；
图4是本发明第二实施方式中阈值信号设置“信号值-时间”的坐标示意图；
图5是本发明第二实施方式步骤304中第一信号和第二信号进行求差值运算示意图；
图6是本发明第二实施方式第一信号和第二信号匹配的示意图；
图7是本发明一种触控面板抗干扰的方法的第三实施方式流程图；
图8是本发明一种触控面板的第四实施方式的结构示意图；
图9是本发明一种显示器的第五实施方式的结构示意图。
【具体实施方式】
参阅图1，本发明一种触控面板抗干扰的方法的第一实施方式包括：
步骤101：接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，进行步骤102；若接收信号包括有效信号，进行步骤103；
接收信号是在设备开启的状态下，无论是否接收到有效信号，均一直接收信号；
本实施方式中，有效信号主要是触控信号，即手指或者其他导体接触触控面板时，传感器获取到的信号；由于触控屏分为矢量压力传感技术触摸屏、电阻技术触摸屏、电容技术触摸屏、红外线技术触摸屏、表面声波技术触摸屏等，因此该有效信号也可以是压力信号、电流信号、红外信号、声波信号或者其他信号，例如射频信号；
以电容屏为例，在触控面板未接收到有效信号时，杂讯信号主要来自LCD的栅线和数据线的反复关闭或者切换，此时，杂讯信号的信号值是不连续的，起伏不定，而且幅值较小，如图2所示，因此可以通过检测接收到信号值的连续性或者幅值的大小来判断接收信号是否是有效信号。
步骤102：保存接收信号作为第一信号；
当传感器未接收到有效信号时，保存接收信号作为第一信号；本实施方式中，处理器可以对传感器采集到的杂讯信号进行分析，由于杂讯信号的产生是因为LCD的栅线和数据线的反复关闭或者切换，因此杂讯信号有可能是周期变化的信号或噪声信号，具备相应的杂讯特征或噪声特征，所以处理器可以只采集一个周期内的信号或采集一段时间的信号，并分析信号，对照杂讯特征或噪声特征，只存储一个周期或者一段时间的杂讯信号；当然，因不确定信号是否为周期变化或随机变化，也可以对该信号一直进行采集保存。
步骤103：保存接收信号作为第二信号；
当传感器接收到有效信号时，存储所述接收信号并作为第二信号；因为杂讯信号是随时存在的，因此在传感器接收到有效信号时对有效信号进行采集的时候，也会同时采集到杂讯信号，因此第二信号是有效信号和杂讯信号的结合。
步骤104：将第一信号和第二信号进行处理，获取有效信号。
该处理方式可以是将第二信号进行滤波处理，对幅值进行修正，获得纯净的有效信号；也可以是比对第一信号，在第二信号中过滤出与第一信号相同的信号。
区别于现有技术，本实施方式通过接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；将第一信号和第二信号进行处理，获取有效信号。采用此种手段，本实施方式通过分时同区域来采集LCD产生的干扰信号，即利用同一区域的传感器在导体触摸时和未触摸时分别接收第一信号和第二信号，再通过信号处理获取纯净的有效信号，因此，无需将传感器分为干扰信号采集区和有效信号采集区，这样使触控面板显示区域的面积增大为原有干扰信号采集区和有效信号采集区的总和，提高触控面板的开口率；并且利用整个面板采集干扰信号，使干扰信号的采集更加准确，获取的有效信号更加纯净。
参阅图3，本发明一种触控面板抗干扰的方法的第二实施方式包括：
步骤301：将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号，若是，进行步骤302；若否，进行步骤303；
阈值信号的幅值是根据第一信号和第二信号来设定的，一般情况下是界于第一信号和第二信号之间；如图4所示，第一信号是杂讯信号，因此信号值是不连续的，起伏不定，且幅值较小；第二信号是有效信号和杂讯信号的总和，由于有杂讯信号的存在，第二信号也是起伏不定的，但是第二信号的幅值较大，因此根据第一信号和第二信号的幅值可以设置一界于第一信号和第二信号幅值之间的阈值信号，并保存起来，在接收到信号时，将接收信号与阈值信号比对，从而判断接收信号是第一信号还是第二信号。
步骤302：当接收信号小于阈值信号时，判定接收信号不包括有效信号并保存接收信号作为第一信号；
步骤303：当接收信号大于或等于阈值信号时，判定接收信号包括有效信号并保存接收信号作为第二信号；
在比较判断接收信号与阈值信号幅值大小的时候，由于第一信号和第二信号均是起伏不定的，则可以通过将第一信号和第二信号的最大值、最小值或者平均值中的一个与阈值信号进行比较；例如，设置为当接收信号的最大值小于阈值信号时，判定接收信号为杂讯信号，并作为第一信号；当接收信号的最小值大于或者等于阈值信号时，判定接收信号为有效信号和杂讯信号的总和，并作为第二信号。
步骤304：将第一信号和第二信号进行求差值运算并获得差值信号，并将差值信号作为有效信号。
如图5所示，图5（a）是第一信号坐标示意图，图5（b）是第二信号坐标示意图，图5（c）是有效信号坐标示意图；由于第一信号和第二信号的采集是分时的，因此两个信号在时间坐标（图中的X轴）上并不能匹配，但是由于第一信号的产生是周期性地，并且第二信号中的噪声在一个周期内是与第一信号大致相同的，比如，可以将第一信号的多个极值与第二信号的多个极值进行比较，这样可以将第一信号与第二信号进行周期性地的匹配，判断每个异常噪声在每个周期的时间；
然后将第一信号和第二信号进行求差值运算，根据匹配的第一信号及第二信号，对每个时间点的信号做相应的减法运算，即第二信号第一极值的幅值减去第一信号第一极值的幅值，第二信号第二极值的幅值减去第一信号第二极值的幅值，依次类推，这样获得差值信号，并将该差值信号作为有效信号。
具体地，如图6所示，在将第一信号与第二信号进行匹配时，是将各个信号的极值进行对应的匹配，如图实线的第一信号各个极值能与第二信号进行匹配，而虚线的第一信号并不能与第二信号匹配，因此只有在第一信号与第二信号的极值匹配的时候，才对第一信号和第二信号进行求差值运算。
区别于现有技术，本实施方式通过将接收信号与阈值信号进行比较，判断接收信号是否是有效信号，在未接受到有效信号时，将接收到的杂讯信号进行存储作为第一信号，在接收到有效信号时，作为第二信号，通过匹配极值，对第一信号和第二信号进行处理，将第一信号和第二信号进行求差值运算从第二信号中筛选出第一信号，从而获取纯净的有效信号；通过增加判断第一信号和第二信号的极值进行匹配，使得在第二信号中筛选第一信号的时候能够准确的筛选出在各自同一周期内相应时间的信号幅值，不会仅是筛选一个第一信号的平均值或者大概值，这样就会使得第一信号和第二信号的匹配更加准备，筛选更加精准，获得的有效信号更加的纯净。
参阅图7，本发明一种触控面板抗干扰的方法的第三实施方式包括：
步骤701：接收信号并检测接收信号是否包括有效信号；若接收信号不包括有效信号，进行步骤702；若接收信号包括有效信号，进行步骤703；
步骤702：周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号；
由于杂讯信号的随机性和不连续性，在触控面板不同的位置、不同的时间产生的杂讯信号都可能不同，因此为了更方便的获取杂讯信号并从有效信号中筛选出杂讯信号，本实施方式采用周期性地采集至少两个杂讯信号并求平均值的方式；
具体地，这里也可以采用第二实施方式中与阈值信号比较的方式，当接收信号小于阈值信号时，判定接收到的信号是杂讯信号，并周期性的采集杂讯信号，值得注意的是：信号的接收是时刻接收的，只是采集信号是按周期的；
在接收到有效信号之前，每采集一个杂讯信号均与之前采集的每个杂讯信号做平均值处理并保存作为第一信号，这样，存储器中的第一信号是不断更新的，是随着新的杂讯信号而改变的，可以预想，当杂讯信号采集的足够多，存储器中的第一信号将保持稳定；
另外，采集杂讯信号的周期是可以任意设置的，周期越小，采集的杂讯信号越精准，当周期足够小时，可以认为是连续采集，即可以对采集的连续或非连续信号进行积分并求平均值，这样会使得采集的杂讯信号更加精确。
步骤703：保存接收信号作为第二信号；
步骤704：将第一信号和第二信号进行处理，获取有效信号。
由于第一信号是周期采样获取多个杂讯信号的平均值，因此在将第一信号和第二信号进行处理时，仅需将第二信号减去一个固定的平均值，从而获得有效信号。
区别于现有技术，本实施方式在未接收到有效信号时，通过周期性地采样获取杂讯信号，对多个杂讯信号进行求平均值处理，并将该平均值信号作为第一信号，使得第一信号的获取更加方便、快捷；另外，在对第一信号和第二信号进行处理时，由于第一信号是多个杂讯信号的平均值信号，在做筛选时，更容易从第二信号中过滤出第一信号，避免了繁琐的比较极值和匹配的过程，使得触控面板对第二信号的相应更加的迅速，减轻了处理器的负担。
参阅图8，本发明一种触控面板的第四实施方式，该触控面板包括：阵列分布的传感器801及处理器802，每一行的传感器通过一条数据线连接处理器802；
阵列分布的传感器801用于接收信号；
处理器802用于检测接收信号是否包括有效信号，若接收信号不包括有效信号，保存接收信号作为第一信号；若接收信号包括有效信号，保存接收信号作为第二信号；
处理器802还用于将第一信号和第二信号进行处理，获取有效信号。
其他实施方式中，处理器还用于将将接收信号与预存阈值信号进行比对，判断接收信号是否小于阈值信号；当接收信号小于阈值信号时，判定接收信号不包括有效信号；当接收信号大于或等于阈值信号时，判定接收信号包括有效信号。
其他实施方式中，处理器还包括一减法器；减法器用于将第一信号和第二信号进行求差运算并获得差值信号，并将差值信号作为有效信号。
其他实施方式中，处理器进一步用于在接收信号不包括有效信号时，周期性地采集至少两个杂讯信号并对至少两个杂讯信号进行求平均值运算获得平均值信号，并将平均值信号作为第一信号。
本实施方式一种触控面板是基于前述实施方式一种触控面板抗干扰的方法的一终端，因此，前述各实施方式也适用于本实施方式。
区别于现有技术，本实施方式通过检测是否接收到有效信号；在未接收到有效信号时，采集杂讯信号作为第一信号；在接收到有效信号时，采集有效信号和杂讯信号作为第二信号；将第一信号和第二信号进行处理，获取有效信号。采用此种手段，本实施方式通过分时同区域来采集LCD产生的干扰信号，即利用同一区域的传感器在导体触摸时和未触摸时分别接收第一信号和第二信号，再通过信号处理获取纯净的有效信号，因此，无需将传感器分为干扰信号采集区和有效信号采集区，这样使触控面板显示区域的面积增大为原有干扰信号采集区和有效信号采集区的总和，提高触控面板的开口率；并且利用整个面板采集干扰信号，使干扰信号的采集更加准确，获取的有效信号更加纯净。
参阅图8，本发明一种显示器的第五实施方式，该显示器包括：
显示器主体900和设置于显示器主体900表面的触控面板901；
其中，触控面板是如实施方式1至4中任一项的触控面板，这里不再赘述。
区别与现有技术，本实施方式的显示器包括一触控面板，该触控面板通过检测是否接收到有效信号；在未接收到有效信号时，采集杂讯信号作为第一信号；在接收到有效信号时，采集有效信号和杂讯信号作为第二信号；将第一信号和第二信号进行处理，获取有效信号。采用此种手段，本实施方式通过分时同区域来采集LCD产生的干扰信号，即利用同一区域的传感器在导体触摸时和未触摸时分别接收第一信号和第二信号，再通过信号处理获取纯净的有效信号，因此，无需将传感器分为干扰信号采集区和有效信号采集区，这样使触控面板显示区域的面积增大为原有干扰信号采集区和有效信号采集区的总和，提高触控面板的开口率；并且利用整个面板采集干扰信号，使干扰信号的采集更加准确，获取的有效信号更加纯净。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (15)

  1. 一种触控面板抗干扰的方法，其中，包括：
    接收信号并检测所述接收信号是否包括有效信号；
    若所述接收信号不包括有效信号，周期性地采集至少两个杂讯信号并对所述至少两个杂讯信号进行求平均值运算获得平均值信号，并将所述平均值信号作为所述第一信号；
    若所述接收信号包括有效信号，保存所述接收信号作为第二信号；
    将所述第一信号和所述第二信号进行求差值运算并获得差值信号，并将所述差值信号作为所述有效信号。
  2. 根据权利要求1所述的方法，其中，所述检测所述接收信号是否包括有效信号的方法包括：
    将所述接收信号与预存阈值信号进行比对，判断所述接收信号是否小于所述阈值信号；
    当所述接收信号小于所述阈值信号时，判定所述接收信号不包括所述有效信号；
    当所述接收信号大于或等于所述阈值信号时，判定所述接收信号包括所述有效信号。
  3. 一种触控面板抗干扰的方法，其中，包括：
    接收信号并检测所述接收信号是否包括有效信号；
    若所述接收信号不包括有效信号，保存所述接收信号作为第一信号；
    若所述接收信号包括有效信号，保存所述接收信号作为第二信号；
    将所述第一信号和所述第二信号进行处理，获取所述有效信号。
  4. 根据权利要求3所述的方法，其中，所述检测所述接收信号是否包括有效信号的方法包括：
    将所述接收信号与预存阈值信号进行比对，判断所述接收信号是否小于所述阈值信号；
    当所述接收信号小于所述阈值信号时，判定所述接收信号不包括所述有效信号；
    当所述接收信号大于或等于所述阈值信号时，判定所述接收信号包括所述有效信号。
  5. 根据权利要求3所述的方法，其中，所述将所述第一信号和所述第二信号进行处理是：
    将所述第一信号和第二信号进行求差值运算并获得差值信号，并将所述差值信号作为所述有效信号。
  6. 根据权利要求3所述的方法，其中，所述方法进一步包括：
    若所述接收信号不包括有效信号，周期性地采集至少两个杂讯信号并对所述至少两个杂讯信号进行求平均值运算获得平均值信号，并将所述平均值信号作为所述第一信号。
  7. 根据权利要求3所述的方法，其中，所述有效信号是触控信号。
  8. 一种触控面板，其特征在于，包括：
    阵列分布的传感器，用于接收信号；
    处理器，与阵列分布的传感器连接，用于检测所述接收信号是否包括有效信号，若所述接收信号不包括有效信号，保存所述接收信号作为第一信号；若所述接收信号包括有效信号，保存所述接收信号作为第二信号；
    所述处理器还用于将所述第一信号和所述第二信号进行处理，获取所述有效信号。
  9. 根据权利要求8所述的触控面板，其中，所述检测器还包括一存储器，所述存储器用于预存阈值信号；
    所述处理器还用于将将所述接收信号与预存阈值信号进行比对，判断所述接收信号是否小于所述阈值信号；
    当所述接收信号小于所述阈值信号时，判定所述接收信号不包括所述有效信号；
    当所述接收信号大于或等于所述阈值信号时，判定所述接收信号包括所述有效信号。
  10. 根据权利要求8所述的触控面板，其中，所述处理器还包括一减法器；
    所述减法器用于将所述第一信号和第二信号进行求差运算并获得差值信号，并将所述差值信号作为所述有效信号。
  11. 根据权利要求8所述的触控面板，其中，所述处理器进一步用于在所述接收信号不包括有效信号时，周期性地采集至少两个杂讯信号并对所述至少两个杂讯信号进行求平均值运算获得平均值信号，并将所述平均值信号作为所述第一信号。
  12. 一种显示器，其特征在于，所述显示器包括：
    显示器主体和设置于所述显示器主体表面的触控面板；
    其中，所述触控面板包括阵列分布的传感器和处理器；
    阵列分布的传感器，用于接收信号；
    处理器，与阵列分布的传感器连接，用于检测所述接收信号是否包括有效信号，若所述接收信号不包括有效信号，保存所述接收信号作为第一信号；若所述接收信号包括有效信号，保存所述接收信号作为第二信号；
    所述处理器还用于将所述第一信号和所述第二信号进行处理，获取所述有效信号。
  13. 根据权利要求12所述的触控面板，其中，所述检测器还包括一存储器，所述存储器用于预存阈值信号；
    所述处理器还用于将将所述接收信号与预存阈值信号进行比对，判断所述接收信号是否小于所述阈值信号；
    当所述接收信号小于所述阈值信号时，判定所述接收信号不包括所述有效信号；
    当所述接收信号大于或等于所述阈值信号时，判定所述接收信号包括所述有效信号。
  14. 根据权利要求12所述的触控面板，其中，所述处理器还包括一减法器；
    所述减法器用于将所述第一信号和第二信号进行求差运算并获得差值信号，并将所述差值信号作为所述有效信号。
  15. 根据权利要求12所述的触控面板，其中，所述处理器进一步用于在所述接收信号不包括有效信号时，周期性地采集至少两个杂讯信号并对所述至少两个杂讯信号进行求平均值运算获得平均值信号，并将所述平均值信号作为所述第一信号。
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