WO2019015301A1 - 电容补偿模组、方法、自容式触控显示面板和装置 - Google Patents

电容补偿模组、方法、自容式触控显示面板和装置 Download PDF

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Publication number
WO2019015301A1
WO2019015301A1 PCT/CN2018/074920 CN2018074920W WO2019015301A1 WO 2019015301 A1 WO2019015301 A1 WO 2019015301A1 CN 2018074920 W CN2018074920 W CN 2018074920W WO 2019015301 A1 WO2019015301 A1 WO 2019015301A1
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WIPO (PCT)
Prior art keywords
voltage
compensation
touch electrode
control signal
touch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/074920
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English (en)
French (fr)
Inventor
王雪英
孙继刚
杨万华
郎月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US16/079,132 priority Critical patent/US11099690B2/en
Publication of WO2019015301A1 publication Critical patent/WO2019015301A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G06F3/0416—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 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads

Definitions

  • the embodiments of the present disclosure relate to the field of touch display technologies, and in particular, to a capacitor compensation module, a method, a self-capacitive touch display panel, and a device.
  • the existing FIC (Full in cell) touch display panel is an embedded self-capacitive touch display panel.
  • the FIC touch display panel adopts a single-layer touch trace design, and adopts the self-capacitance principle to realize multi-touch.
  • the existing FIC touch display panel adds a circle of grounding wire around the FIC touch display panel, thereby causing the edge value of the FIC touch display panel to warp. That is, the initial capacitance value of the capacitance formed between the touch electrode and the ground when the touch electrode is not touched is increased.
  • At least one embodiment of the present disclosure provides a capacitance compensation module, which is applied to a self-capacitive touch display panel, and the self-capacitive touch display panel includes a plurality of display substrates. Touch electrodes, the capacitor compensation module includes:
  • a detecting circuit configured to detect an initial capacitance value of a capacitance formed between the plurality of touch electrodes and the ground when the touch electrodes are not touched;
  • the determining circuit is connected to the detecting circuit, and configured to output a compensation control signal when determining that the touch electrode is an abnormal touch electrode according to an initial capacitance value of the touch electrode;
  • a compensation circuit is connected to the determining circuit, and configured to apply a compensation voltage to the abnormal touch electrode when the compensation control signal is received, so that the abnormal touch electrode is formed between the ground and the ground when the touch sensor is not touched
  • the initial capacitance of the capacitor is within the range of standard capacitance values.
  • the detecting circuit is further configured to process the initial capacitance value by a predetermined algorithm and perform analog-to-digital conversion to obtain digital original data, and convert the digital raw data into untouched The original voltage on the touch electrode;
  • the determining circuit is specifically configured to output a compensation control signal when the original voltage when the touch electrode is not touched is not in the standard voltage range, and mark the touch electrode as an abnormal touch electrode.
  • the standard voltage range is less than or equal to the first voltage threshold
  • the standard voltage range is less than or equal to the first voltage threshold and greater than or equal to the second voltage threshold, and the second voltage threshold is less than the first voltage threshold.
  • the compensation circuit when the standard voltage range is less than or equal to the first voltage threshold, the compensation circuit includes a compensation control signal input terminal for receiving the compensation control signal;
  • the detection circuit includes an original voltage output for outputting the original voltage;
  • the determining circuit includes a voltage comparator
  • a non-inverting input terminal of the voltage comparator is coupled to an original voltage output terminal of the detection circuit, and a negative phase input terminal of the voltage comparator is coupled to a first voltage threshold input terminal, an output of the voltage comparator The terminal is connected to the input of the compensation control signal.
  • the compensation circuit when the standard voltage range is less than or equal to the first voltage threshold and greater than or equal to the second voltage threshold, the second voltage threshold is less than the first a voltage threshold, the compensation circuit includes a compensation control signal input for receiving the compensation control signal; the detection circuit includes an original voltage output for outputting the original voltage;
  • the determining circuit includes a first voltage comparator, a second voltage comparator, and an OR gate;
  • a non-inverting input end of the first voltage comparator is connected to an original voltage output end of the detecting circuit, and a negative phase input end of the first voltage comparator is connected to a first voltage threshold input end, An output of a voltage comparator is coupled to the first input of the OR gate;
  • a non-inverting input terminal of the second voltage comparator is coupled to a second voltage threshold input terminal, and a negative phase input terminal of the second voltage comparator is coupled to an original voltage output terminal of the detection circuit, An output of the two voltage comparator is coupled to the second input of the OR gate;
  • An output of the OR gate is coupled to the compensation control signal input.
  • the compensation circuit further includes:
  • a first voltage dividing resistor unit the first end is connected to the second pole of the control switching transistor, and the second end is connected to the compensation voltage output end;
  • the second voltage dividing resistor unit has a first end connected to the compensation voltage output end and a second end connected to the low power voltage input end.
  • At least one embodiment of the present disclosure further provides a capacitance compensation method, which is applied to the above-described capacitance compensation module, and the capacitance compensation method includes:
  • the detecting circuit detects an initial capacitance value of a capacitance formed between the plurality of touch electrodes included in the self-capacitive touch display panel and the ground when the touch electrodes are not touched;
  • the compensation control signal is output
  • the compensation circuit When the compensation circuit receives the compensation control signal, applying a compensation voltage to the abnormal touch electrode, so that the initial capacitance value of the capacitance formed between the abnormal touch control electrode and the ground is within a standard capacitance value range. Inside.
  • the capacitor compensation method further includes: the detecting circuit processes the initial capacitance value by a predetermined algorithm and analog-to-digital conversion to obtain digital original data, and converts the digital raw data into an untouched touch electrode Original voltage
  • the step of outputting the compensation control signal when the determining circuit determines that the touch electrode is an abnormal touch electrode according to the initial capacitance value of the touch electrode includes: when the determining circuit determines that the touch electrode is not touched When the original voltage is not in the standard voltage range, the compensation control signal is output, and the touch electrode is marked as an abnormal touch electrode.
  • the standard voltage range is less than or equal to the first voltage threshold
  • the standard voltage range is less than or equal to the first voltage threshold and greater than or equal to the second voltage threshold, and the second voltage threshold is less than the first voltage threshold.
  • At least one embodiment of the present disclosure further provides a self-capacitive touch display panel, including the above-described capacitance compensation module.
  • At least one embodiment of the present disclosure further provides a self-capacitive touch display device, including the self-capacitive touch display panel described above.
  • the self-capacitive touch display device of at least one embodiment of the present disclosure further includes a driving chip
  • the compensation circuit of the capacitance compensation module included in the self-capacitive touch display panel is specifically configured to apply a compensation voltage to the abnormal touch electrode through the driving chip when the compensation control signal is received, so that the abnormality
  • the initial capacitance value of the capacitance formed between the touch electrode and the ground when the touch electrode is not touched is within a standard capacitance value range.
  • FIG. 1 is a schematic structural diagram of a capacitance compensation module according to at least one embodiment of the present disclosure
  • FIG. 2 is a circuit diagram of a capacitor compensation module according to another embodiment of the present disclosure.
  • FIG. 3 is a circuit diagram of a capacitor compensation module according to still another embodiment of the present disclosure.
  • FIG. 4 is a circuit diagram of a capacitor compensation module according to still another embodiment of the present disclosure.
  • FIG. 5 is a circuit diagram of a specific embodiment of a capacitance compensation module according to the present disclosure.
  • FIG. 6 is a flowchart of a method of capacitance compensation according to at least one embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a self-capacitive touch display device according to at least one embodiment of the present disclosure.
  • the capacitance compensation module of the at least one embodiment of the present disclosure is applied to a self-capacitive touch display panel, and the self-capacitive touch display panel includes a plurality of touch electrodes disposed on the display substrate, as shown in the figure.
  • the capacitor compensation module includes:
  • the detecting circuit 11 is configured to detect an initial capacitance value of a capacitance formed between the plurality of touch electrodes and the ground when the touch electrodes are not touched;
  • the determining circuit 12 is connected to the detecting circuit 11 and configured to output a compensation control signal when determining that the touch electrode is an abnormal touch electrode according to an initial capacitance value of the touch electrode;
  • the compensation circuit 13 is connected to the determining circuit 12, and is configured to apply a compensation voltage to the abnormal touch electrode when the compensation control signal is received, so that the abnormal touch electrode is not touched and ground
  • the initial capacitance of the formed capacitor is within the range of standard capacitance values.
  • the capacitance compensation module of the at least one embodiment of the present disclosure detects the initial capacitance value by the detection circuit 11, and the determination circuit 12 determines whether the touch electrode is an abnormal touch electrode according to the initial capacitance value, and determines When the touch electrode is an abnormal touch electrode, the compensation control signal is output, and the compensation circuit 13 applies the compensation voltage to the abnormal touch electrode, so that the initial capacitance value of the abnormal touch electrode is within the standard range. Therefore, the full-screen capacitance value can be effectively uniformized, the yield of the touch portion of the self-capacitive touch display panel is improved, and the value warpage phenomenon at the edge of the self-capacitive touch display panel is avoided.
  • the capacitor compensation module according to at least one embodiment of the present disclosure can improve the yield of the touch display panel and reduce the cost.
  • the capacitance compensation module of the at least one embodiment of the present disclosure can be applied to a FIC (Full in cell) touch display panel, and the FIC touch display panel is an embedded self-capacitive touch display. panel.
  • the FIC touch display panel adopts a single-layer touch trace design, and adopts the self-capacitance principle to realize multi-touch.
  • ESD Electro-Static discharge
  • a grounding wire is added around the FIC touch display panel, so that the edge of the FIC touch display panel is warped. The phenomenon that the initial capacitance value of the capacitance formed between the touch electrode and the ground is increased when the touch electrode of the edge is not touched, the capacitance compensation module according to at least one embodiment of the present disclosure can effectively solve the above problem.
  • At least one embodiment of the present disclosure collects initial capacitance value data by the detecting circuit 11, determines that the circuit 12 recognizes an abnormal point, and the compensation circuit 13 corrects the abnormal point, and can reduce the touch display panel that is broken due to the existence of the value warping problem.
  • the detection circuit 11 may be internally provided with capacitance detection software.
  • the detecting circuit is further configured to process the initial capacitance value by a predetermined algorithm and analog-to-digital conversion to obtain digital raw data (Raw data), and convert the digital raw data into untouched The original voltage Ui on the touch electrode.
  • the determining circuit is specifically configured to output a compensation control signal when the original voltage Ui when the touch electrode is not touched is not in the standard voltage range, and mark the touch electrode as an abnormal touch electrode.
  • the initial capacitance value can be processed by a predetermined algorithm through the detection circuit and the analog-to-digital conversion is performed to obtain the digital original data (the number here)
  • the raw data is calculated when the existing touch display panel is operated, and then the digital raw data is processed and converted into the original voltage Ui on the touch electrode, and then the determining circuit is based on the original voltage Ui. Determine whether the touch electrode is an abnormal touch electrode.
  • the digital raw data is obtained by the IC (Integrated Circuit) manufacturer according to the touch test and debugging software developed by different FIC touch display products, and the initial capacitance value is processed and subjected to analog-to-digital conversion. .
  • the detecting circuit detects an initial capacitance value of a capacitance formed between the touch electrode and the ground when the touch electrode is not touched, the original voltage Ui is generated at both ends of the capacitor due to charging.
  • the standard digital data voltage range corresponding to the NG screen may be ( ⁇ , ⁇ ), and the standard voltage range corresponding to the NG screen may be (U ⁇ , U ⁇ ), where ⁇ may be the first digital data voltage gate
  • the limit value, ⁇ , may be a second digital data voltage threshold, U ⁇ may be a first voltage threshold, and U ⁇ may be a second voltage threshold.
  • the touch electrode can be determined to be a normal touch electrode; Ui ⁇ U ⁇ or U ⁇ Ui, that is, the digital data voltage corresponding to the touch electrode is not within the standard digital data voltage range, and the touch electrode can be determined to be an abnormal touch electrode.
  • Ui ⁇ U ⁇ or U ⁇ Ui that is, the digital data voltage corresponding to the touch electrode is not within the standard digital data voltage range
  • the touch electrode can be determined to be an abnormal touch electrode.
  • the standard voltage range may be less than or equal to the first voltage threshold U ⁇ ; or the standard voltage range may be less than or equal to the first voltage threshold U ⁇ and greater than or equal to the second voltage threshold.
  • the value U ⁇ , the second voltage threshold U ⁇ is smaller than the first voltage threshold U ⁇ .
  • the compensation circuit 13 when the standard voltage range is less than or equal to the first voltage threshold U ⁇ , as shown in FIG. 2, the compensation circuit 13 includes compensation control for receiving the compensation control signal Vout.
  • Signal input in the embodiment shown in Figure 2, the compensation control signal Vout is a voltage signal).
  • the detection circuit 11 includes an original voltage output for outputting the original voltage Ui.
  • the determination circuit 12 includes a voltage comparator VC1.
  • the non-inverting input terminal of the voltage comparator VC1 is connected to the original voltage output terminal of the detecting circuit 11, and the negative phase input terminal of the voltage comparator and the first voltage threshold value inputting the first voltage threshold value U ⁇
  • the input terminal is connected, and the output of the voltage comparator VC1 is connected to the compensation control signal input terminal.
  • the embodiment of the capacitor compensation module shown in FIG. 2 is in operation.
  • the voltage comparator VC1 When Ui is less than or equal to (the first voltage threshold U ⁇ , the voltage comparator VC1 outputs a low voltage signal (corresponding to the digital signal “0”). "), that is, the compensation control signal Vout is a low voltage signal.
  • the voltage comparator VC1 when Ui is greater than the first voltage threshold U ⁇ , the voltage comparator VC1 outputs a high voltage signal (corresponding to the digital signal "1”), that is, The compensation control signal Vout is a high voltage signal.
  • the compensation circuit 13 when the standard voltage range is less than or equal to the first voltage threshold U ⁇ and greater than or equal to the second voltage threshold U ⁇ , the second voltage threshold U ⁇ is smaller than the first a voltage threshold U ⁇ , as shown in FIG. 3, the compensation circuit 13 includes a compensation control signal input terminal for receiving the compensation control signal Vout; the detection circuit 11 includes a source for outputting the original voltage Ui The original voltage output.
  • the determination circuit 12 includes a first voltage comparator VC1, a second voltage comparator VC2, and an OR gate ORG.
  • the non-inverting input end of the first voltage comparator VC1 is connected to the original voltage output end of the detecting circuit 11, the negative phase input end of the first voltage comparator VC1 and the first input voltage threshold U ⁇ A voltage threshold input is coupled, and an output of the first voltage comparator VC1 is coupled to a first input of the OR gate ORG.
  • the non-inverting input terminal of the second voltage comparator VC2 is connected to the second voltage threshold input terminal of the second voltage threshold U ⁇ , and the negative phase input terminal of the second voltage comparator VC2 is connected to the detection An original voltage output of the circuit 11 is coupled, and an output of the second voltage comparator VC2 is coupled to a second input of the OR gate ORG.
  • An output of the OR gate ORG is coupled to a compensation control signal input terminal of the compensation circuit 13 for receiving the compensation control signal Vout.
  • the voltage comparator VC1 When Ui is less than or equal to the first voltage threshold U ⁇ , the voltage comparator VC1 outputs a low voltage signal, and the first input of the ORG receives the low voltage signal. In addition, when Ui is greater than the first voltage threshold U ⁇ , the voltage comparator VC1 outputs a high voltage signal, and the first input of the ORG receives the high voltage signal.
  • the voltage comparator VC1 When Ui is less than or equal to the second voltage threshold U ⁇ , the voltage comparator VC1 outputs a high voltage signal, and the second input of the ORG receives the high voltage signal. In addition, when Ui is greater than the second voltage threshold U ⁇ , the voltage comparator VC1 outputs a low voltage signal, and the second input of the ORG receives the low voltage signal.
  • the first input of the ORG receives the low voltage signal (corresponding to the digital signal “0” "), the second input of the ORG also receives a low voltage signal (corresponding to the digital signal "0"), then the ORG outputs a low voltage signal (corresponding to the digital signal "0").
  • the first input of the ORG receives the high voltage signal (corresponding to the digital signal "1"), and the second input of the ORG receives the low voltage signal (corresponding In the digital signal "0"), the ORG outputs a high voltage signal (corresponding to the digital signal "1"), and at this time, the compensation control signal Vout is a high voltage signal.
  • the compensation circuit may further include:
  • a first voltage dividing resistor unit the first end is connected to the second pole of the control switching transistor, and the second end is connected to the compensation voltage output end;
  • the second voltage dividing resistor unit has a first end connected to the compensation voltage output end and a second end connected to the low power voltage input end.
  • the compensation circuit 13 may include:
  • the gate is connected to the compensation control signal input end (the compensation control signal input terminal is connected to the compensation control signal Vout), and the drain is connected to the high power supply voltage input end of the input high power supply voltage VDD;
  • a first voltage dividing resistor R1 the first end is connected to the source of the control switching transistor VT, and the second end is connected to the compensation voltage output end;
  • the second voltage dividing resistor R2 has a first end connected to the compensation voltage output end and a second end connected to the low power supply voltage input end of the input low power supply voltage VSS.
  • VT is an n-type transistor.
  • the VT may also be a p-type transistor, and the type of the transistor is not limited herein.
  • the embodiment of the capacitor compensation module shown in FIG. 4 is in operation.
  • the gate of the VT is connected to the high voltage signal, that is, when Ui is not within the range of the standard voltage value, the VT is turned on.
  • Uo Equal to (VDD-VSS) ⁇ RZ2/(RZ1+RZ2) RZ1 is the resistance value of the first voltage dividing resistor R1
  • RZ2 is the resistance value of the second voltage dividing resistor R2
  • the capacitance value is compensated by voltage compensation
  • RZ1 RZ2 needs to obtain a suitable resistance value based on a large number of data receipt statistics.
  • the VT When the gate of the VT is connected to the low voltage signal, that is, when Ui is within the range of the standard voltage value, the VT is turned off, and the capacitance value compensation is not required by the voltage compensation.
  • a specific embodiment of the capacitance compensation module described in the present disclosure includes a detection circuit 11, a determination circuit 12, and a compensation circuit 13.
  • the detecting circuit 11 is configured to detect an initial capacitance value of a capacitance formed between the plurality of touch electrodes and the ground when the touch electrodes are not touched, and process the initial capacitance value by a predetermined algorithm and perform analog-to-digital conversion to obtain digital raw data.
  • Raw data and converting the digital raw data into the original voltage Ui on the touch electrode when not touched.
  • the determination circuit 12 includes a voltage comparator VC1.
  • the compensation circuit 13 includes a compensation control signal input for receiving a compensation control signal Vout.
  • the compensation control signal is a voltage signal.
  • the non-inverting input of the voltage comparator VC1 is connected to the original voltage output of the detecting circuit 11 (the original voltage output is used to output the original voltage Ui), and the negative phase input of the voltage comparator VC1
  • the terminal is connected to the first voltage threshold input terminal of the input first voltage threshold U ⁇ , the output of the voltage comparator VC1 and the compensation control signal input end (the compensation control signal input terminal is used for receiving the compensation control signal) Vout) connection.
  • the compensation circuit 13 includes: a compensation voltage output terminal for outputting the compensation voltage Uo;
  • the gate is connected to the compensation control signal input end (the compensation control signal input terminal is connected to the compensation control signal Vout), and the drain is connected to the high power supply voltage input end of the input high power supply voltage VDD;
  • a first voltage dividing resistor R1 the first end is connected to the source of the control switching transistor VT, and the second end is connected to the compensation voltage output end;
  • the second voltage dividing resistor R2 is connected to the compensation voltage output terminal (the compensation voltage output terminal is used for outputting the compensation voltage Uo), and the second terminal is connected to the low power voltage input terminal of the input low power supply voltage VSS.
  • the determination circuit includes a voltage comparator
  • the compensation circuit includes a control switching transistor and a voltage division type voltage compensation circuit.
  • Vout is a low voltage signal (corresponding to the digital signal “0”), at which time VT is turned off and Uo is 0, and the digital raw data corresponding to the touch electrode is within the standard digital raw data range.
  • the output voltage Uo (VDD-VSS) ⁇ RZ2/(RZ1+RZ2), and RZ1 is the first.
  • the resistance value of the voltage dividing resistor R1, RZ2 is the resistance value of the second voltage dividing resistor R2, so that Uo ⁇ U ⁇ is required at this time, the requirement is satisfied, and RZ1 and RZ2 need to obtain a suitable resistance value according to a large amount of data receipt statistics.
  • the capacitor compensation method according to at least one embodiment of the present disclosure is applied to the capacitor compensation module described above. As shown in FIG. 6, the capacitor compensation method includes:
  • the detecting circuit detects an initial capacitance value of a capacitance formed between the plurality of touch electrodes included in the self-capacitive touch display panel and the ground when the touch electrodes are not touched;
  • S2 outputting a compensation control signal when the determining circuit determines that the touch electrode is an abnormal touch electrode according to an initial capacitance value of the touch electrode;
  • the capacitance compensation method detects the initial capacitance value by using a detection circuit, and the determination circuit determines whether the touch electrode is an abnormal touch electrode according to the initial capacitance value, and determines the touch.
  • the compensation control signal is output, and after receiving the compensation control signal, the compensation circuit applies a compensation voltage to the abnormal touch electrode, so that the initial capacitance value of the abnormal touch electrode is within a standard range, thereby enabling Effectively normalize the full-screen capacity value to avoid the value warping of the edge of the self-capacitive touch display panel.
  • the capacitor compensation method detects the initiality of the capacitance formed between the ground and the ground when the plurality of touch electrodes included in the self-capacitive touch display panel are not touched by the detecting circuit.
  • the step of the capacitance value further includes: the detecting circuit processing the initial capacitance value by a predetermined algorithm and performing analog-to-digital conversion to obtain digital original data, and converting the digital raw data into an untouched touch electrode Original voltage
  • the step of outputting the compensation control signal when the determining circuit determines that the touch electrode is an abnormal touch electrode according to the initial capacitance value of the touch electrode includes: when the determining circuit determines that the touch electrode is not touched When the original voltage is not in the standard voltage range, the compensation control signal is output, and the touch electrode is marked as an abnormal touch electrode.
  • the standard voltage range may be less than or equal to the first voltage threshold
  • the standard voltage range may be less than or equal to the first voltage threshold and greater than or equal to the second voltage threshold, and the second voltage threshold is less than the first voltage threshold.
  • the self-capacitive touch display panel of at least one embodiment of the present disclosure includes the above-described capacitance compensation module.
  • the self-capacitive touch display device of the at least one embodiment of the present disclosure includes the self-capacitive touch display panel described above.
  • the self-capacitive touch display device 100 of the at least one embodiment of the present disclosure may further include a driving chip 110 .
  • the compensation circuit 13 in the capacitance compensation module 1200 of the self-capacitive touch display panel 120 is specifically configured to apply a compensation voltage to the abnormal touch electrode through the driving chip 110 when receiving the compensation control signal.
  • the initial capacitance value of the capacitance formed between the abnormal touch control electrode and the ground when the abnormal touch electrode is not touched is within a standard capacitance value range.
  • the term "compound” or "at least one compound” can include a plurality of compounds, including mixtures thereof.
  • range format various embodiments of the present disclosure may be presented in a range format. It should be understood that the description in the range format is merely for convenience and brevity and should not be construed as limiting the scope of the disclosure. Accordingly, the description of a range should be considered to have specifically disclosed all possible sub-ranges and individual values within the range. For example, descriptions of ranges such as from 1 to 6 should be considered to have been specifically disclosed such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, and from 3 to Sub-ranges such as 6 and the like, as well as individual numbers within the range, for example, 1, 2, 3, 4, 5, and 6. This applies regardless of the width of the range.

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Abstract

一种电容补偿模组、方法、自容式触控显示面板和装置。所述电容补偿模组包括：检测电路（11），用于检测多个触控电极未被触摸时与地之间形成的电容的初始电容值（S1）；判断电路（12），用于当根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号（S2）；以及，补偿电路（13），用于当接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内（S3）。其能至少部分的减轻自容式触控显示面板边缘的容值翘曲现象。

Description

电容补偿模组、方法、自容式触控显示面板和装置
相关申请的交叉引用
本申请主张在2017年7月17日在中国提交的中国专利申请号No.201710580620.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本的实施例涉及触控显示技术领域，尤其涉及一种电容补偿模组、方法、自容式触控显示面板和装置。
背景技术
现有的FIC(Full in cell，全内嵌式)触控显示面板为内嵌的自容式触控显示面板。FIC触控显示面板采用单层触控走线设计，采用的是自电容原理，实现多点触控。现有的FIC触控显示面板为了提高抗ESD(Electro-Static discharge，静电释放)能力，在FIC触控显示面板周边增加一圈接地线，从而出现FIC触控显示面板边缘容值翘曲的现象，也就是边缘的触控电极未被触摸时与地之间形成的电容的初始电容值增高的现象。
发明内容
在第一方面中，本公开文本的至少一个实施例提供了一种电容补偿模组，应用于自容式触控显示面板，所述自容式触控显示面板包括设置于显示基板上的多个触控电极，所述电容补偿模组包括：
检测电路，用于检测所述多个触控电极未被触摸时与地之间形成的电容的初始电容值；
判断电路，与所述检测电路连接，用于当根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；以及，
补偿电路，与所述判断电路连接，用于当接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
在本公开文本的一个可行实施例中，所述检测电路还用于将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压；
所述判断电路具体用于当判断到该触控电极未被触摸时的原始电压不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
在本公开文本的一个可行实施例中，所述标准电压范围为小于或等于第一电压门限值；或者，
所述标准电压范围为小于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值。
在本公开文本的一个可行实施例中，当所述标准电压范围为小于或等于第一电压门限值时，所述补偿电路包括用于接收所述补偿控制信号的补偿控制信号输入端；所述检测电路包括用于输出所述原始电压的原始电压输出端；
所述判断电路包括电压比较器；
所述电压比较器的正相输入端与所述检测电路的原始电压输出端连接，所述电压比较器的负相输入端与第一电压门限值输入端连接，所述电压比较器的输出端与所述补偿控制信号输入端连接。
在本公开文本的一个可行实施例中，当所述标准电压范围为小于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值时，所述补偿电路包括用于接收所述补偿控制信号的补偿控制信号输入端；所述检测电路包括用于输出所述原始电压的原始电压输出端；
所述判断电路包括第一电压比较器、第二电压比较器，以及，或门；
所述第一电压比较器的正相输入端与所述检测电路的原始电压输出端连接，所述第一电压比较器的负相输入端与第一电压门限值输入端连接，所述第一电压比较器的输出端与所述或门的第一输入端连接；
所述第二电压比较器的正相输入端与第二电压门限值输入端连接，所述第二电压比较器的负相输入端与所述检测电路的原始电压输出端连接，所述第二电压比较器的输出端与所述或门的第二输入端连接；
所述或门的输出端与所述补偿控制信号输入端连接。
在本公开文本的一个可行实施例中，所述补偿电路还包括：
用于输出所述补偿电压的补偿电压输出端；
控制开关晶体管，栅极与所述补偿控制信号输入端连接，第一极与高电源电压输入端连接；
第一分压电阻单元，第一端与所述控制开关晶体管的第二极连接，第二端与所述补偿电压输出端连接；以及，
第二分压电阻单元，第一端与所述补偿电压输出端连接，第二端与低电源电压输入端连接。
在第二方面中，本公开文本的至少一个实施例还提供了一种电容补偿方法，应用于上述的电容补偿模组，所述电容补偿方法包括：
检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值；
当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；
当补偿电路接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
在本公开文本的一个可行实施例中，在所述检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值步骤之后，所述电容补偿方法还包括：所述检测电路将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压；
所述当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号步骤包括：当所述判断电路判断到该触控电极未被触摸时的原始电压不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
在本公开文本的一个可行实施例中，所述标准电压范围为小于或等于第一电压门限值；或者，
所述标准电压范围为小于或等于第一电压门限值而大于或等于第二电压 门限值，所述第二电压门限值小于所述第一电压门限值。
在第三方面中，本公开文本的至少一个实施例还提供了一种自容式触控显示面板，其中，包括上述的电容补偿模组。
在第四方面中，本公开文本的至少一个实施例还提供了一种自容式触控显示装置，包括上述的自容式触控显示面板。
在本公开文本的一个可行实施例中，本公开文本的至少一个实施例所述的自容式触控显示装置还包括驱动芯片；
所述自容式触控显示面板包括的电容补偿模组中的补偿电路具体用于当接收到补偿控制信号时，通过所述驱动芯片向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
附图说明
为了更清楚地说明本公开文本的至少一个实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开文本的至少一个实施例所述的电容补偿模组的结构示意图；
图2是本公开文本另一实施例所述的电容补偿模组的电路图；
图3是本公开文本又一实施例所述的电容补偿模组的电路图；
图4是本公开文本再一实施例所述的电容补偿模组的电路图；
图5是本公开文本所述的电容补偿模组的一具体实施例的电路图；
图6是本公开文本的至少一个实施例所述的电容补偿方法的流程图；以及
图7是本公开文本的至少一个实施例所述的自容式触控显示装置的结构示意图。
具体实施方式
下面将结合本公开文本的至少一个实施例中的附图，对本公开文本的至少一个实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开文本一部分实施例，而不是全部的实施例。基于本公开文本中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开文本保护的范围。
本公开文本的至少一个实施例所述的电容补偿模组，应用于自容式触控显示面板，所述自容式触控显示面板包括设置于显示基板上的多个触控电极，如图1所示，所述电容补偿模组包括：
检测电路11，用于检测所述多个触控电极未被触摸时与地之间形成的电容的初始电容值；
判断电路12，与所述检测电路11连接，用于当根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；以及，
补偿电路13，与所述判断电路12连接，用于当接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
本公开文本的至少一个实施例所述的电容补偿模组通过检测电路11检测所述初始电容值，采用判断电路12根据该初始电容值判断该触控电极是否为异常触控电极，并在判断到该触控电极为异常触控电极时输出补偿控制信号，补偿电路13接收到该补偿控制信号后向该异常触控电极施加补偿电压，以使得该异常触控电极的初始电容值在标准范围内，从而能够有效的均一化全屏容值，提高自容式触控显示面板的触控部分的良率，避免自容式触控显示面板边缘处的容值翘曲现象。相应的，本公开文本的至少一个实施例所述的电容补偿模组能够提高触控显示面板良率，降低成本。
本公开文本的至少一个实施例所述的电容补偿模组可以应用于FIC(Full in cell，全内嵌式)触控显示面板，而FIC触控显示面板为内嵌的自容式触控显示面板。FIC触控显示面板采用单层触控走线设计，采用的是自电容原理，实现多点触控。为了解决现有的FIC触控显示面板为了提高抗ESD(Electro-Static discharge，静电释放)能力，在FIC触控显示面板周边增加一圈接地线，从而出现FIC触控显示面板边缘容值翘曲(也即边缘的触控电极 未被触摸时与地之间形成的电容的初始电容值增高)的现象，本公开的至少一个实施例所述的电容补偿模组可以有效地解决如上问题。
本公开文本的至少一个实施例通过检测电路11收集初始电容值数据，判断电路12识别异常点，补偿电路13纠正异常点，能够减少因存在容值翘曲问题而故障的触控显示面板。在实际操作时，所述检测电路11内部可以设置容值检测软件。
根据一种具体实施方式，所述检测电路还用于将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据(Raw data)，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压Ui。
所述判断电路具体用于当判断到该触控电极未被触摸时的原始电压Ui不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
在具体实施时，针对存在数字数据电压(Raw data)边缘翘曲的NG(故障)屏，可以先通过检测电路将初始电容值通过预定算法处理以及模数转换后得到数字原始数据(这里的数字原始数据是在现有的触控显示面板运行时就会运算得到的)，之后对该数字原始数据进行处理而转换为该触控电极上的原始电压Ui，之后判断电路根据该原始电压Ui来判断触控电极是否为异常触控电极。
所述数字原始数据是通过各IC(Integrated Circuit，集成电路)厂商根据不同的FIC触控显示产品配套研发的触控测试及调试软件，对初始电容值进行处理，并进行模数转换后得到的。
在检测电路检测所述触控电极未被触摸时与地之间形成的电容的初始电容值时，该电容两端会由于充电而产生所述原始电压Ui。该原始电压Ui与该初始电容值C之间的关系式如下：C＝Q/Ui；其中，Q为所述电容存储的电荷量，也即，可以将所述数字数据电压转换为对应的原始电压Ui。
在实际操作时，该NG屏对应的标准数字数据电压范围可以为(α,β)，该NG屏对应的标准电压范围可以为(Uα,Uβ)，其中，β可以为第一数字数据电压门限值，α可以为第二数字数据电压门限值，Uβ可以为第一电压门限值，Uα可以为第二电压门限值。当针对某触控电极，Uα≤Ui≤Uβ，即该触控 电极对应的数字数据电压在标准数字数据电压范围内，则可以判断该触控电极为正常触控电极；当针对某触控电极，Ui<Uα或者Uβ<Ui，即该触控电极对应的数字数据电压不在标准数字数据电压范围内，则可以判断该触控电极为异常触控电极。考虑到翘曲现象(也即边缘的数字数据电压偏大)的实际情况，在实际操作时也可以只判断是否存在Ui>Uβ的异常触控电极的情况。
具体的，所述标准电压范围可以为小于或等于第一电压门限值Uβ；或者，所述标准电压范围也可以为小于或等于第一电压门限值Uβ而大于或等于第二电压门限值Uα，所述第二电压门限值Uα小于所述第一电压门限值Uβ。
根据一种具体实施方式，当所述标准电压范围为小于或等于第一电压门限值Uβ时，如图2所示，所述补偿电路13包括用于接收所述补偿控制信号Vout的补偿控制信号输入端(在图2所示的实施例中，所述补偿控制信号Vout为电压信号)。所述检测电路11包括用于输出所述原始电压Ui的原始电压输出端。
所述判断电路12包括电压比较器VC1。
所述电压比较器VC1的正相输入端与所述检测电路11的原始电压输出端连接，所述电压比较器的负相输入端与输入第一电压门限值Uβ的第一电压门限值输入端连接，所述电压比较器VC1的输出端与所述补偿控制信号输入端连接。
本公开文本如图2所示的电容补偿模组的实施例在工作时，当Ui小于或等于(第一电压门限值Uβ时，电压比较器VC1输出低电压信号(对应于数字信号“0”)，也即所述补偿控制信号Vout为低电压信号。另外，当Ui大于第一电压门限值Uβ时，电压比较器VC1输出高电压信号(对应于数字信号“1”)，也即所述补偿控制信号Vout为高电压信号。
根据另一种具体实施方式，当所述标准电压范围为小于或等于第一电压门限值Uβ而大于或等于第二电压门限值Uα，所述第二电压门限值Uα小于所述第一电压门限值Uβ时，如图3所示，所述补偿电路13包括用于接收所述补偿控制信号Vout的补偿控制信号输入端；所述检测电路11包括用于输出所述原始电压Ui的原始电压输出端。
所述判断电路12包括第一电压比较器VC1、第二电压比较器VC2以及 或门ORG。
所述第一电压比较器VC1的正相输入端与所述检测电路11的原始电压输出端连接，所述第一电压比较器VC1的负相输入端与输入第一电压门限值Uβ的第一电压门限值输入端连接，所述第一电压比较器VC1的输出端与所述或门ORG的第一输入端连接。
所述第二电压比较器VC2的正相输入端与输入第二电压门限值Uα的第二电压门限值输入端连接，所述第二电压比较器VC2的负相输入端与所述检测电路11的原始电压输出端连接，所述第二电压比较器VC2的输出端与所述或门ORG的第二输入端连接。
所述或门ORG的输出端与所述补偿电路13包括的用于接收所述补偿控制信号Vout的补偿控制信号输入端连接。
本公开文本如图3所示的电容补偿模组的实施例在工作时，
当Ui小于或等于第一电压门限值Uβ时，电压比较器VC1输出低电压信号，ORG的第一输入端接收该低电压信号。另外，当Ui大于第一电压门限值Uβ时，电压比较器VC1输出高电压信号，ORG的第一输入端接收该高电压信号。
当Ui小于或等于第二电压门限值Uα时，电压比较器VC1输出高电压信号，ORG的第二输入端接收该高电压信号。另外，当Ui大于第二电压门限值Uα时，电压比较器VC1输出低电压信号，ORG的第二输入端接收该低电压信号。
当Ui处于标准电压值范围内时，也即当Ui小于或等于Uβ，并且，Ui大于等于第二电压门限值Uα时，ORG的第一输入端接收低电压信号(对应于数字信号“0”)，ORG的第二输入端也接收低电压信号(对应于数字信号“0”)，则ORG输出低电压信号(对应于数字信号“0”)。
当Ui不处于标准电压值范围内时，分为以下两种情况：
第一种情况：当Ui大于Uβ时，此时Ui一定大于Uα，ORG的第一输入端接收高电压信号(对应于数字信号“1”)，ORG的第二输入端接收低电压信号(对应于数字信号“0”)，ORG输出高电压信号(对应于数字信号“1”)，此时，所述补偿控制信号Vout为高电压信号。
第二种情况：当Ui小于Uα时，Ui一定小于Uβ，ORG的第一输入端接收低电压信号(对应于数字信号“0”)，ORG的第二输入端接收高电压信号(对应于数字信号“1”)，则ORG输出高电压信号(对应于数字信号“1”)，此时，所述补偿控制信号Vout为高电压信号。
具体的，所述补偿电路还可以包括：
用于输出所述补偿电压的补偿电压输出端；
控制开关晶体管，栅极与所述补偿控制信号输入端连接，第一极与高电源电压输入端连接；
第一分压电阻单元，第一端与所述控制开关晶体管的第二极连接，第二端与所述补偿电压输出端连接；以及，
第二分压电阻单元，第一端与所述补偿电压输出端连接，第二端与低电源电压输入端连接。
在具体实施时，如图4所示，所述补偿电路13可以包括：
包括用于接收所述补偿控制信号Vout的补偿控制信号输入端；
用于输出所述补偿电压Uo的补偿电压输出端；
控制开关晶体管VT，栅极与所述补偿控制信号输入端(由所述补偿控制信号输入端接入补偿控制信号Vout)连接，漏极与输入高电源电压VDD的高电源电压输入端连接；
第一分压电阻R1，第一端与所述控制开关晶体管VT的源极连接，第二端与所述补偿电压输出端连接；以及，
第二分压电阻R2，第一端与所述补偿电压输出端连接，第二端与输入低电源电压VSS的低电源电压输入端连接。
在图4所示的实施例中，VT为n型晶体管。但是在实际操作时，VT也可以为p型晶体管，在此对晶体管的类型不作限定。
本公开文本如图4所示的电容补偿模组的实施例在工作时，当VT的栅极接入高电压信号时，即当Ui不在标准电压值范围内时，VT打开，此时，Uo等于(VDD-VSS)×RZ2/(RZ1+RZ2)，RZ1为第一分压电阻R1的电阻值，RZ2为第二分压电阻R2的电阻值，通过电压补偿而进行电容值补偿；RZ1、RZ2需根据大量数据收据统计得到合适阻值。
当VT的栅极接入低电压信号时，也即Ui在标准电压值范围内时，VT关断，此时不需通过电压补偿而进行电容值补偿。
下面通过一具体实施例来说明本公开文本所述的电容补偿模组。
如图5所示，本公开文本所述的电容补偿模组的一具体实施例包括检测电路11、判断电路12和补偿电路13。
所述检测电路11用于检测所述多个触控电极未被触摸时与地之间形成的电容的初始电容值，将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据(Raw data)，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压Ui。
所述判断电路12包括电压比较器VC1。所述补偿电路13包括用于接收补偿控制信号Vout的补偿控制信号输入端。在本具体实施例中，所述补偿控制信号为电压信号。
所述电压比较器VC1的正相输入端与所述检测电路11的原始电压输出端(所述原始电压输出端用于输出所述原始电压Ui)连接，所述电压比较器VC1的负相输入端与输入第一电压门限值Uβ的第一电压门限值输入端连接，所述电压比较器VC1的输出端与补偿控制信号输入端(所述补偿控制信号输入端用于接收补偿控制信号Vout)连接。
所述补偿电路13包括：用于输出所述补偿电压Uo的补偿电压输出端；
控制开关晶体管VT，栅极与所述补偿控制信号输入端(由所述补偿控制信号输入端接入补偿控制信号Vout)连接，漏极与输入高电源电压VDD的高电源电压输入端连接；
第一分压电阻R1，第一端与所述控制开关晶体管VT的源极连接，第二端与所述补偿电压输出端连接；以及，
第二分压电阻R2，第一端与所述补偿电压输出端(所述补偿电压输出端用于输出补偿电压Uo)连接，第二端与输入低电源电压VSS的低电源电压输入端连接。
在图5所示的电容补偿模组的具体实施例中，判断电路包括电压比较器，补偿电路包括控制开关晶体管和分压型电压补偿电路。由此，判断电路和补偿电路共同完成了容值异常点识别、电压补偿的功能。
本公开文本如图5所示的电容补偿模组的具体实施例在工作时，
当Ui≤Uβ时，Vout为低电压信号(对应于数字信号“0”)，此时VT关闭，Uo为0，此时对应于该触控电极的数字原始数据在标准数字原始数据范围内。
另一方面，当Ui>Uβ时，Vout为高电压信号，此时VT开启，Uo＝Ui×R2/(R1+R2)。此时要求Uo<Uβ则满足要求，此时该点的raw data值在limit spec范围外，为异常点，输出电压Uo＝(VDD-VSS)×RZ2/(RZ1+RZ2)，RZ1为第一分压电阻R1的电阻值，RZ2为第二分压电阻R2的电阻值，以使得此时要求Uo<Uβ，则满足要求，RZ1、RZ2需根据大量数据收据统计得到合适阻值。本公开文本的至少一个实施例所述的电容补偿方法，应用于上述的电容补偿模组，如图6所示，所述电容补偿方法包括：
S1：检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值；
S2：当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；以及
S3：当补偿电路接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
本公开文本的至少一个实施例所述的电容补偿方法通过检测电路检测所述初始电容值，采用判断电路根据该初始电容值判断该触控电极是否为异常触控电极，并在判断到该触控电极为异常触控电极时输出补偿控制信号，补偿电路接收到该补偿控制信号后向该异常触控电极施加补偿电压，以使得该异常触控电极的初始电容值在标准范围内，从而能够有效的均一化全屏容值，避免由于自容式触控显示面板边缘的容值翘曲现象。
具体的，本公开文本的至少一个实施例所述的电容补偿方法在所述检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值步骤之后还包括：所述检测电路将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压；
所述当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号步骤包括：当所述判断电路判断到该触控电极未被触摸时的原始电压不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
在实际操作时，所述标准电压范围可以为小于或等于第一电压门限值；或者，
所述标准电压范围可以为小于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值。
本公开的至少一个实施例所述的自容式触控显示面板包括上述的电容补偿模组。
本公开的至少一个实施例所述的自容式触控显示装置包括上述的自容式触控显示面板。
在具体实施时，如图7所示，本公开的至少一个实施例所述的自容式触控显示装置100还可以包括驱动芯片110。
所述自容式触控显示面板120包括的电容补偿模组1200中的补偿电路13具体用于当接收到补偿控制信号时，通过所述驱动芯片110向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
以上所述是本公开文本的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开文本所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开文本的保护范围。
如本申请中所使用的，单数形式的“一”、“一个”以及“该”包括复数形式，除了上下文清楚指示的之外。例如，术语“化合物”或“至少一个化合物”可以包括多个化合物，包括其混合物。
在本申请中使用词语“示例性的”来指“充当示例、实例或例证”。被描述为“示例性的”任何实施例不一定被解释为优选的或比其他实施例更有利的和/或将特征的组合排除在其他实施例之外。
在本申请中使用词语“可选地”来指“在一些实施例中提供且在其他实施例中不提供”。本公开文本的任何特定的实施例可以包括多个“可选的”特 征，除非这样的特征冲突。
贯穿本申请，可以范围格式给出本公开文本的各个实施例。应该理解的是，以范围格式进行的描述仅为了方便和简洁而不应被解释为对本公开文本范围的僵化的限制。因此，对范围的描述应该被认为已经具体地公开了所有可能的子范围以及该范围内的单个数值。例如，对诸如从1到6之类的范围的描述应该被认为已经具体公开了诸如从1到3、从1到4、从1到5、从2到4、从2到6、从3到6等之类的子范围，以及在该范围内的单个数，例如，1、2、3、4、5和6。无论该范围的宽度为何，这都适用。
每当在本申请中指出一数值范围时，其意在包括所指出的范围中的任何引用数字(分数或整数)。在本申请中互换地使用短语在第一指示数和第二指示数的“范围/之间的范围中”以及“范围/范围从”第一指示数“到”第二指示数，且其意在包括第一和第二指示的数和在其之间的所有的分数和整数数字。
要明白的是，为了清楚起见，本公开文本的某些特征在分离的实施例的上下文中进行了描述，其也可以在单个实施例中结合地提供。相反，为了简洁起见单个实施例的上下文中描述的本公开文本的各个特征也可以分别地或在任何适当的子组合中或如在本公开文本的所描述的任何其他的实施例中适当的提供。在各个实施例的上下文中描述的某些特征不应被认为是这些实施例的必要特征，除非在没有这些元件的情况下本实施例不起作用。
以上所述，仅为本公开文本的具体实施方式，但本公开文本的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开文本揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开文本的保护范围之内。因此，本公开文本的保护范围应以权利要求的保护范围为准。

Claims (12)

  1. 一种电容补偿模组，应用于自容式触控显示面板，所述自容式触控显示面板包括设置于显示基板上的多个触控电极，所述电容补偿模组包括：
    检测电路，用于检测所述多个触控电极未被触摸时与地之间形成的电容的初始电容值；
    判断电路，与所述检测电路连接，用于当根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；以及，
    补偿电路，与所述判断电路连接，用于当接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
  2. 如权利要求1所述的电容补偿模组，其中，所述检测电路还用于将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压；
    所述判断电路具体用于当判断到该触控电极未被触摸时的原始电压不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
  3. 如权利要求2所述的电容补偿模组，其中，所述标准电压范围为小于或等于第一电压门限值；或者，
    所述标准电压范围为小于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值。
  4. 如权利要求3所述的电容补偿模组，其中，当所述标准电压范围为小于或等于第一电压门限值时，所述补偿电路包括用于接收所述补偿控制信号的补偿控制信号输入端；所述检测电路包括用于输出所述原始电压的原始电压输出端；
    所述判断电路包括电压比较器；
    所述电压比较器的正相输入端与所述检测电路的原始电压输出端连接，所述电压比较器的负相输入端与第一电压门限值输入端连接，所述电压比较器的输出端与所述补偿控制信号输入端连接。
  5. 如权利要求3所述的电容补偿模组，其中，当所述标准电压范围为小 于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值时，所述补偿电路包括用于接收所述补偿控制信号的补偿控制信号输入端；所述检测电路包括用于输出所述原始电压的原始电压输出端；
    所述判断电路包括第一电压比较器、第二电压比较器，以及，或门(ORG)；
    所述第一电压比较器的正相输入端与所述检测电路的原始电压输出端连接，所述第一电压比较器的负相输入端与第一电压门限值输入端连接，所述第一电压比较器的输出端与所述或门的第一输入端连接；
    所述第二电压比较器的正相输入端与第二电压门限值输入端连接，所述第二电压比较器的负相输入端与所述检测电路的原始电压输出端连接，所述第二电压比较器的输出端与所述或门的第二输入端连接；并且
    所述或门的输出端与所述补偿控制信号输入端连接。
  6. 如权利要求4或5所述的电容补偿模组，其中，所述补偿电路还包括：
    用于输出所述补偿电压的补偿电压输出端；
    控制开关晶体管，栅极与所述补偿控制信号输入端连接，第一极与高电源电压输入端连接；
    第一分压电阻单元，第一端与所述控制开关晶体管的第二极连接，第二端与所述补偿电压输出端连接；以及，
    第二分压电阻单元，第一端与所述补偿电压输出端连接，第二端与低电源电压输入端连接。
  7. 一种电容补偿方法，应用于如权利要求1至6中任一项权利要求所述的电容补偿模组，所述电容补偿方法包括：
    检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值；
    当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号；以及，
    当补偿电路接收到所述补偿控制信号时，向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
  8. 如权利要求7所述的电容补偿方法，其中，在所述检测电路检测自容式触控显示面板包括的多个触控电极未被触摸时与地之间形成的电容的初始电容值步骤之后，所述电容补偿方法还包括：所述检测电路将所述初始电容值通过预定算法处理以及模数转换后得到数字原始数据，并将所述数字原始数据转换为未被触摸时该触控电极上的原始电压；
    所述当判断电路根据所述触控电极的初始电容值判断到该触控电极为异常触控电极时输出补偿控制信号步骤包括：当所述判断电路判断到该触控电极未被触摸时的原始电压不在标准电压范围时输出补偿控制信号，并将该触控电极标记为异常触控电极。
  9. 如权利要求8所述的电容补偿方法，其中，所述标准电压范围为小于或等于第一电压门限值；或者，
    所述标准电压范围为小于或等于第一电压门限值而大于或等于第二电压门限值，所述第二电压门限值小于所述第一电压门限值。
  10. 一种自容式触控显示面板，包括如权利要求1至6中任一项权利要求所述的电容补偿模组。
  11. 一种自容式触控显示装置，包括如权利要求10所述的自容式触控显示面板。
  12. 如权利要求11所述的自容式触控显示装置，还包括驱动芯片；
    所述自容式触控显示面板包括的电容补偿模组中的补偿电路具体用于当接收到补偿控制信号时，通过所述驱动芯片向所述异常触控电极施加补偿电压，以使得该异常触控电极未被触摸时与地之间形成的电容的初始电容值在标准电容值范围内。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377232A (zh) * 2020-09-27 2021-09-10 京东方科技集团股份有限公司 触控结构、显示设备及电容补偿的方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219961B (zh) 2017-07-17 2019-01-22 京东方科技集团股份有限公司 电容补偿模组、方法、自容式触控显示面板和装置
CN107894862B (zh) * 2017-11-29 2021-01-08 武汉天马微电子有限公司 显示面板及其显示装置
WO2019136642A1 (zh) * 2018-01-10 2019-07-18 深圳市汇顶科技股份有限公司 电极异常处理方法、装置、触摸屏及电子终端
CN108062189B (zh) * 2018-01-22 2024-05-07 京东方科技集团股份有限公司 电容补偿模组、方法和触控显示装置
CN112394825B (zh) * 2019-08-19 2024-07-02 北京小米移动软件有限公司 校准电容式触控模组的方法、装置和存储介质
CN111782087A (zh) * 2020-08-04 2020-10-16 Oppo广东移动通信有限公司 触控组件及显示装置、电子设备
CN114882541A (zh) * 2022-05-18 2022-08-09 北京集创北方科技股份有限公司 指纹感测装置及电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200939083A (en) * 2008-03-05 2009-09-16 Danotech Co Ltd Active compensation circuit of panel voltage
US20090231286A1 (en) * 2008-03-12 2009-09-17 Danotech Co., Ltd. Active touch panel voltage compensation circuit
CN101546232A (zh) * 2008-03-24 2009-09-30 达诺光电股份有限公司 面板电压主动补偿电路
CN102193577A (zh) * 2010-03-05 2011-09-21 天网电子股份有限公司 具电压补偿与零电位切换特性的定电流电路
JP2016018289A (ja) * 2014-07-07 2016-02-01 スーパー パイオニア カンパニー リミテッドＳｕｐｅｒ Ｐｉｏｎｅｅｒ Ｃｏ．，Ｌｔｄ． 静電容量方式タッチパネルの回転補償式マルチタッチの位置固定方法及び構造
CN107219961A (zh) * 2017-07-17 2017-09-29 京东方科技集团股份有限公司 电容补偿模组、方法、自容式触控显示面板和装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200939083A (en) * 2008-03-05 2009-09-16 Danotech Co Ltd Active compensation circuit of panel voltage
US20090231286A1 (en) * 2008-03-12 2009-09-17 Danotech Co., Ltd. Active touch panel voltage compensation circuit
CN101546232A (zh) * 2008-03-24 2009-09-30 达诺光电股份有限公司 面板电压主动补偿电路
CN102193577A (zh) * 2010-03-05 2011-09-21 天网电子股份有限公司 具电压补偿与零电位切换特性的定电流电路
JP2016018289A (ja) * 2014-07-07 2016-02-01 スーパー パイオニア カンパニー リミテッドＳｕｐｅｒ Ｐｉｏｎｅｅｒ Ｃｏ．，Ｌｔｄ． 静電容量方式タッチパネルの回転補償式マルチタッチの位置固定方法及び構造
CN107219961A (zh) * 2017-07-17 2017-09-29 京东方科技集团股份有限公司 电容补偿模组、方法、自容式触控显示面板和装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377232A (zh) * 2020-09-27 2021-09-10 京东方科技集团股份有限公司 触控结构、显示设备及电容补偿的方法
CN113377232B (zh) * 2020-09-27 2024-01-23 京东方科技集团股份有限公司 触控结构、显示设备及电容补偿的方法

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