WO2013056472A1 - Procédé de commande pour système de commande tactile active - Google Patents

Procédé de commande pour système de commande tactile active Download PDF

Info

Publication number
WO2013056472A1
WO2013056472A1 PCT/CN2011/081152 CN2011081152W WO2013056472A1 WO 2013056472 A1 WO2013056472 A1 WO 2013056472A1 CN 2011081152 W CN2011081152 W CN 2011081152W WO 2013056472 A1 WO2013056472 A1 WO 2013056472A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch
signal
electrode
circuit
control
Prior art date
Application number
PCT/CN2011/081152
Other languages
English (en)
Chinese (zh)
Inventor
陈其良
刘海平
Original Assignee
智点科技（深圳）有限公司
智点科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 智点科技（深圳）有限公司, 智点科技有限公司 filed Critical 智点科技（深圳）有限公司
Priority to CN201180001856.5A priority Critical patent/CN103221905B/zh
Priority to PCT/CN2011/081152 priority patent/WO2013056472A1/fr
Priority to TW101138818A priority patent/TW201322097A/zh
Publication of WO2013056472A1 publication Critical patent/WO2013056472A1/fr

Links

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
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes

Definitions

  • the present invention relates to a touch screen, and more particularly to an active touch screen and a driving method thereof. Background technique
  • Touch is the most important way of human perception, the most natural way for people to interact with machines. Touch screen
  • Resistive touch screen is still the leading product on the market, but the structure of the two-layer substrate of the resistive touch screen makes the reflection of the touch screen greatly affect the brightness of the display when the touch screen and the display panel are stacked together. Display quality such as contrast, color saturation, etc., greatly degrades the overall display quality, and increases the brightness of the backlight of the display panel, which also causes the power consumption to rise; the analog resistive touch screen also has the problem of positioning drift, from time to time. Position calibration; In addition, the working mode of the resistive touch screen electrode makes the life of the touch screen shorter.
  • Infrared touch screens and ultrasonic touch screens do not affect display quality.
  • the infrared touch screen and the ultrasonic touch screen are costly, and water droplets and dust can affect the reliability of the touch screen operation, especially the infrared touch screen and the ultrasonic touch screen mechanism are complicated, and the power consumption is large, so that the infrared Touch screens and ultrasonic touch screens are basically not available on portable products.
  • the structure of the single-layer substrate of the flat capacitive touch screen makes the touch screen have little effect on the display quality when the touch screen and the display panel are stacked together.
  • the planar capacitive touch screen also has the problem of positioning drift. Position calibration is performed from time to time. Water droplets also affect the reliability of the touch screen operation; especially the planar capacitive touch screen consumes a lot of power and costs, and also makes the plane Capacitive touch screens are basically not available on portable products.
  • the projected capacitive touch screen can still be a single-layer substrate structure, and when the touch screen and the display panel are stacked together, the touch screen has little effect on the display quality.
  • the projected capacitive touch screen measures the influence of the finger or other touch object on the coupling capacitance between the electrodes of the touch screen.
  • the finger is detected by measuring the influence of the finger or other touch object on the charging and discharging of the touch screen electrode. Or the location of other touch objects on the touch screen.
  • the anchor point needs to be simulated, not a real digital touch screen.
  • Chinese patent ZL2010202966254 proposes an active touch system, which isolates the sensing electrode units arranged on the array on the touch screen through the active device unit array provided on the touch screen, so that the sensing units are respectively It can completely sense the change of capacitance caused by the touch object, making multi-touch easy and natural. Summary of the invention
  • the present invention is to provide a driving method for an active touch system, and effectively implements application of a touch excitation signal to each electrode line of an active touch screen, thereby realizing point-by-point independent detection of the sensing electrode unit arranged in the array. Measurement.
  • the basic working principle of the active touch system of the present invention is:
  • the sensing electrode unit and the active device unit are arranged in an array on the touch substrate, and two sets of intersecting control electrode lines and detection electrode lines are connected, and the detecting electrode lines are connected to the sensing electrode unit through the active device unit.
  • the control electrode line is used to control the on and off of the active device unit
  • the detection electrode line is used to apply the touch excitation signal to the sensing electrode unit, and the capacitive coupling between the sensing electrode and the touch object is detected.
  • a coupling capacitance is formed between the finger or other touch object and the sensing electrode unit, and the touch excitation signal on the sensing electrode unit passes through the coupling.
  • the capacitor portion leaks out or leaks through the coupling capacitor to other electrodes on the touch screen.
  • the touch circuit detects the change of the touch signal on the detection electrode line of the touch excitation signal by detecting each strip to the sensing electrode unit, and finds the detection electrode line with the largest leakage current or the leakage current exceeding a certain threshold value, and then combines the current
  • the control electrode line of the active device is turned on to determine the sensing electrode unit that generates the leakage current, thereby finding the position of the finger or other touch object on the touch substrate.
  • Thin film field effect transistor is a typical representative of active matrix devices.
  • the thin film transistor TFT gate is connected to the horizontal scanning line, the source is connected to the vertical data line, and the drain is connected to the load electrode (the drain and source definitions here are just custom sexual definition, the source level does not refer specifically to the level of the source electrode, but to the level of the lower of the source and drain electrodes.
  • the array of active devices arranged in the array allows each load electrode to be equipped with a semiconductor switching device that can be gated by pulses so that each load electrode is relatively independent.
  • TFTs Thin film field effect transistors
  • a_Si amorphous silicon
  • SiNx silicon nitride
  • the positive charge in silicon nitride is used to help attract electrons to form a channel, so TFTs using amorphous silicon processes are mostly of the OS type.
  • the contents of this manual are mainly described by the MN OS thin film transistor.
  • the PM0S thin film transistor can follow the same principle and will not be listed separately.
  • An active touch system is composed of an active touch panel and a touch circuit.
  • the active touch panel has an array of active device units and arrays arranged on the substrate.
  • the sensing electrode unit and the control electrode line and the detecting electrode line intersecting at least two groups, the control electrode lines and the detecting electrode lines are separated by an insulating layer;
  • the touch circuit has a touch excitation source and signal detection a circuit and a control circuit;
  • a sensing electrode unit on the active touch panel is connected to the active device, the active device is connected to the control electrode and the detecting electrode, and the detecting electrode is connected to the touch excitation source and the signal detecting circuit in the touch circuit, and the control electrode Connecting the control circuit in the touch circuit;
  • the touch circuit applies a control signal to each control electrode line in a scanning manner, controls the conduction state of the active device unit, and determines the change of the touch signal on the detection electrode line to determine The position of the touch point;
  • the control signal applied by the touch circuit to the control electrode line is a DC
  • an active touch system driving method the active touch system is composed of an active touch panel and a touch circuit, and the active touch panel has an array arranged on the substrate. a source device unit, a sensing electrode unit arranged in the array, and not less than two sets of intersecting control electrode lines and detecting electrode lines, wherein the control electrode lines and the detecting electrode lines are separated by an insulating layer;
  • the touch circuit has a touch excitation source, a signal detection circuit and a control circuit;
  • a sensing electrode unit on the active touch panel is connected to the active device, the active device is connected to the control electrode and the detection electrode, and the detection electrode is connected to the touch excitation source in the touch circuit
  • a signal detecting circuit the control electrode is connected to the control circuit in the touch circuit;
  • the touch circuit applies a control to each control electrode line in a scanning manner a signal, controlling an on state of the active device unit, and determining a position of the touch point by detecting a change of the touch signal on the detection electrode line; and the control signal applied
  • the touch signal is a DC signal
  • the touch circuit determines whether the sensing electrode unit is touched by detecting a change of the DC touch signal applied to the detecting electrode line.
  • the touch signal is an AC signal
  • the touch circuit determines whether the sensing electrode unit is touched by detecting a change of the AC touch signal applied to the detecting electrode line.
  • the touch signal is a DC signal
  • the touch circuit determines whether the sensing electrode unit is touched by detecting a change of the DC touch signal applied to the detecting electrode line.
  • the touch signal is an AC signal
  • the touch circuit determines whether the sensing electrode unit is touched by detecting a change of the AC touch signal applied to the detecting electrode line.
  • the frequency of the AC control signal is lower than the frequency of the AC touch signal.
  • the frequency of the AC control signal is not lower than the frequency of the AC touch signal.
  • the frequency of the AC signal (AC touch signal or AC control signal) is not less than 10 KHz .
  • the waveform of the AC control signal or the waveform of the AC touch signal may be a square wave, a sine wave, or other periodic waveforms.
  • the adjacent detecting electrodes are connected to different excitation ends of the touch excitation source in the touch circuit, and the touch excitation sources are different.
  • the waveform or frequency or phase of the signal on the excitation end may be the same or different.
  • the touch control circuit has an output terminal connected to a shield electrode disposed between the sensing electrode unit array and the display panel electrode, while the active device unit is in an on state.
  • the signal applied to the shield electrode by the touch circuit is a DC signal.
  • the touch control circuit has an output terminal connected to a shield electrode disposed between the sensing electrode unit array and the display panel electrode, and the active device unit is in an on state
  • the waveform, frequency and phase of the signal applied to the shield electrode by the touch circuit are the same as those applied to the control electrode line by the touch circuit or the signal waveform, frequency and phase applied to the detection electrode line.
  • the display panel is an active liquid crystal display panel
  • the output end of the touch circuit connected to the shield electrode is connected to the display common electrode of the active liquid crystal display panel to display the common electrode.
  • a shield electrode As a shield electrode.
  • the touch circuit detects a change in the touch signal on the detecting electrode line, and measures the amplitude characteristic of charging or discharging of the connected sensing electrode unit by detecting the electrode line.
  • the touch circuit detects a change in the touch signal on the detecting electrode line, and measures a time characteristic of charging or discharging the connected sensing electrode unit by detecting the electrode line.
  • the touch circuit detects a change in a touch signal on the detecting electrode line, and measures a magnitude of a leakage current of the connected sensing electrode unit by detecting the electrode line.
  • the touch circuit detects a change in a touch signal on the detecting electrode line, and measures a phase characteristic of a leakage current of the connected sensing electrode unit by detecting the electrode line.
  • the invention provides a driving signal waveform of each electrode line in the active touch system, and a matching detecting method, which effectively realizes the point-by-point independent detection of the sensing electrode unit arranged in the array.
  • the difference between the signal between the operator touching the detecting electrode line and the touch sensing electrode unit is distinguished, and the operator may be prevented from malfunctioning when touching the detecting electrode line.
  • the signal is filtered by applying a DC shield signal to the shield electrode, or applying a shield signal having the same waveform, frequency, and phase as the drive signal on the control electrode line or the detection electrode line, thereby eliminating the display overlapping with the active touch screen. The effect of the panel on the touch signal.
  • Each sensing electrode unit on the touch screen can independently sense the touch of the touch object, realize the space digitization of the touch position detection, and make the source of the touch signal accurate to each sensing electrode unit;
  • the judging process is greatly simplified, and the resources of the post-processing chip can be saved a lot; the judgment of multi-touch is not a problem; the detection speed is made faster, the reliability is improved; according to the size of the signal of the adjacent sensing electrode unit, or According to the distribution of the sensing electrode unit area signals with the touch signals, the accuracy of the positional position of the touched position can be increased to a small position between adjacent sensing electrode units.
  • 1 is a schematic diagram of electrical connections according to a first embodiment of the present invention
  • 2 is a schematic diagram of electrical connections of two, three, four, five, and six embodiments of the present invention
  • FIG. 3 is a schematic diagram of electrical connections of a seventh embodiment of the present invention.
  • FIG. 4 is a schematic diagram of driving waveforms according to a first embodiment of the present invention.
  • FIG. 5 is a schematic diagram of driving waveforms according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of driving waveforms according to a third embodiment of the present invention.
  • FIG. 7 is a schematic diagram of driving waveforms according to a fourth embodiment of the present invention.
  • FIG. 8 is a schematic diagram of driving waveforms according to a fifth embodiment of the present invention.
  • FIG. 9 is a schematic diagram of driving waveforms according to a sixth embodiment of the present invention.
  • FIG. 10 is a schematic diagram of driving waveforms according to a seventh embodiment of the present invention.
  • FIG. 11 is a schematic diagram of driving waveforms of another embodiment of a seventh embodiment of the present invention.
  • Fig. 12 is a schematic view showing a driving waveform of an eighth embodiment of the present invention. detailed description
  • the active touch system 100 as shown in FIG. 1 includes a touch substrate 110, an active device array 120, a touch electrode, a touch circuit 140, and the like.
  • the three-terminal active device array 120 and the touch electrodes are disposed on the touch substrate 110.
  • the touch electrode is composed of the sensing electrode array 131 and two sets of intersecting row control electrode line groups 132 (1321, 1332, 1323, ..., 132m) and column detecting electrode line groups 133 (1331, 1332, 1333, ..., 133n)
  • the control electrode lines and the detection electrode lines are separated by an insulating layer.
  • the touch circuit 140 has a touch excitation source 141, a signal detection circuit 142, and a control circuit 143.
  • Each of the control electrode lines and the detection electrode lines of the control electrode line group 132 and the detection electrode line group 133 are respectively connected to two terminals of each active device unit of the three-terminal active device array 120; the senses of the sensing electrode array 131
  • the measuring electrode unit is connected to the other terminal of each active device unit;
  • the detecting electrode line group 133 is connected to the touch excitation source 141 and the signal detecting circuit 142 in the touch circuit 140; and the control electrode line group 132 is connected to the touch circuit 140.
  • Control circuit 143 Control circuit 143.
  • the control circuit 143 of the touch control circuit 140 outputs a DC control signal to each control electrode line of the control electrode line group 132 in a scanning manner, and connects the control electrode lines to which the DC control signal is applied.
  • the active device unit is in an on state, and the active device unit connected to the control electrode line to which the DC control signal is not applied is in an off state; the touch excitation source 141 of the touch circuit 140 simultaneously applies to each detection electrode line of the detection electrode line group 133.
  • DC touch excitation As the control circuit 143 causes the active device unit on the control electrode line to be in an on state, the DC touch signal on each detection electrode line flows into the sensing electrode line through the active device unit.
  • the signal detecting circuit 142 of the touch circuit 140 detects the change of the touch signal on each detecting electrode line or detects the change of the DC touch signal on each detecting electrode line.
  • the control circuit 143 outputs a DC control signal to each control electrode line row by row
  • the signal detection circuit 142 detects the DC touch on the sensing electrode unit connected to the control electrode line by the active device unit line by line. Control signal changes.
  • a coupling capacitance is formed between the finger or other touch object and the sensing electrode unit, and the active device unit is connected to the sensing electrode unit.
  • the DC touch signal on the detecting electrode line flows into the sensing electrode unit, that is, the coupling capacitor is charged; the signal detecting circuit 142 detects the change of the amplitude of the touch signal on each detecting electrode line, The detection electrode line with the largest charging current or the charging current exceeding a certain threshold can be found; the signal detecting circuit 142 detects the change of the touch signal on each detecting electrode line, or can find the charging time is the longest or the charging time exceeds a certain time.
  • the detection electrode line of the threshold according to the control electrode line of the active device unit at this time, the touched sensing electrode unit can be determined, thereby finding the position of the finger or other touch object on the touch substrate 110.
  • the active touch system 100 becomes a touch system that can detect the position of the touch point.
  • the signal detecting circuit 142 detects the change of the touch signal on the detecting electrode line 133, and may also be performed in the discharging step of the coupling capacitor to detect the magnitude of the discharging current or the length of the discharging time.
  • the signal detecting circuit 142 detects the touch signals on the plurality of detecting electrode lines at multiple times.
  • the change exceeds a certain threshold, that is, the charging current of the plurality of sensing electrode units is detected to exceed a certain threshold, thereby finding the position of the plurality of fingers on the touch substrate 110 respectively.
  • the active touch system 100 also becomes a touch system that can distinguish multiple touch points. Specific embodiment 2
  • the active touch system 200 shown in FIG. 2 includes a touch substrate 210, a thin film transistor (TFT) array 220, a touch electrode, a touch circuit 240, and the like.
  • a thin film transistor (TFT) array 220 and a touch electrode are disposed on the touch substrate 210.
  • the touch electrode is composed of a sensing electrode array 231 and two sets of intersecting row control electrode line groups 232 (2321). 2332, 2323, ..., 232m) and the column detecting electrode line group 233 (2331, 2332, 2333, ..., 233 ⁇ ) are formed, and each control electrode line and each detecting electrode line are separated by an insulating layer.
  • the touch circuit 240 has a touch excitation source 241, a signal detection circuit 242, and a control circuit 243.
  • Each control electrode line and each detection electrode line of the control electrode line group 232 and the detection electrode line group 233 are respectively connected to the gate and the source of each TFT unit of the TFT array 220; the sensing electrode units of the sensing electrode array 231 are respectively The detection electrode line group 233 is connected to the touch excitation source 241 and the signal detection circuit 242 of the touch control circuit 240; the control electrode line group 232 is connected to the control circuit 243 of the touch control circuit 240.
  • the control circuit 243 of the touch control circuit 240 outputs a DC control signal to each control electrode line of the control electrode line group 232 in a scanning manner, and the TFT unit to which the control electrode line to which the DC control signal is applied is placed.
  • the TFT unit connected to the control electrode line to which the DC control signal is not applied is in an off state; the touch excitation source 241 of the touch control circuit 240 simultaneously applies an AC touch excitation to each detection electrode line of the detection electrode line group 233.
  • the control circuit 243 causes the TFT unit on the control electrode line to be in an on state, the AC touch signal on each detection electrode line flows into the sensing electrode unit connected to the row control electrode line through the TFT unit;
  • the signal detecting circuit 242 of the touch control circuit 240 detects the change of the touch signal on each detecting electrode line column by column during the conduction state of the TFT unit connected to the control electrode line.
  • the control circuit 243 outputs a DC control signal to each control electrode line row by row
  • the signal detection circuit 242 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • the signal detecting circuit 242 can detect the detecting electrode line with the largest leakage current or the leakage current exceeding a certain threshold by detecting the change of the amplitude of the AC touch signal on each detecting electrode line;
  • the measuring circuit 242 detects the change of the touch signal on each detecting electrode line, and may also find the detecting electrode line whose phase change of the AC touch signal is the largest or the phase change of the AC touch signal exceeds a certain threshold;
  • the control electrode line can determine the touched sensing electrode unit to find the position of the finger or other touch object on the touch substrate 210.
  • the active touch system 200 becomes a touch system that can detect the position of the touch point.
  • the signal detecting circuit 242 detects that the touch signal changes beyond a certain threshold on a plurality of detecting electrode lines at a plurality of times, that is, detects that the charging current of the plurality of sensing electrode units exceeds a certain threshold, thereby finding out The position of the plurality of fingers on the touch substrate 210.
  • the active touch system 200 also becomes a touch system that can distinguish multiple touch points.
  • the active touch system 200 shown in FIG. 2 includes a touch substrate 210, a thin film transistor (TFT) array 220, a touch electrode, a touch circuit 240, and the like.
  • a thin film transistor (TFT) array 220 and a touch electrode are disposed on the touch substrate 210.
  • the touch electrodes are composed of the sensing electrode array 231 and two sets of intersecting row control electrode line groups 232 (2321, 2332, 2323, ..., 232m) and column detecting electrode line groups 233 (2331, 2332, 2333, ..., 233 ⁇ )
  • the control electrode lines and the detection electrode lines are separated by an insulating layer.
  • the touch circuit 240 has a touch excitation source 241, a signal detection circuit 242, and a control circuit 243.
  • Each control electrode line and each detection electrode line of the control electrode line group 232 and the detection electrode line group 233 are respectively connected to the gate and the source of each TFT unit of the TFT array 220; the sensing electrode units of the sensing electrode array 231 are respectively The detection electrode line group 233 is connected to the touch excitation source 241 and the signal detection circuit 242 of the touch control circuit 240; the control electrode line group 232 is connected to the control circuit 243 of the touch control circuit 240.
  • the control circuit 243 of the touch control circuit 240 outputs a DC control signal to each control electrode line of the control electrode line group 232 in a scanning manner, and the TFT unit to which the control electrode line to which the DC control signal is applied is placed.
  • the TFT unit connected to the control electrode line to which the DC control signal is not applied is in an off state; one output end of the touch excitation source 241 of the touch circuit 240 applies an AC touch to the odd detection electrode line of the detection electrode line group 233.
  • the other output end of the touch excitation source 241 is applied to the even detection electrode line of the detection electrode line group 233 to apply a zero potential signal.
  • the AC touch signal on the odd-numbered sensing electrode unit flows into the even-numbered sensing electrode unit through the coupling capacitance between the odd-numbered and even-numbered sensing electrode units to form a coupling current between the sensing electrode units.
  • the control circuit 243 makes the TFT unit on the control electrode line of one row in an on state, the DC touch signal on each of the odd detection electrode lines flows into the sensing electrode unit connected to the row control electrode line through the TFT unit.
  • the sensing electrode unit connected to the row control electrode line through the TFT unit and the even-numbered detecting electrode line is at a zero potential; the signal detecting circuit 242 of the touch circuit 240 is controlled in the line During the conduction state of the TFT units connected to the electrode lines, the changes of the touch signals on the lines of the odd detection electrodes are detected column by column.
  • the control circuit 243 outputs a DC control signal to each control electrode line row by row
  • the signal detection circuit 242 detects the touch signal on the odd sensing electrode unit connected to the control electrode line through the TFT unit line by line. The change.
  • the finger or other touch object When the operator's finger or other touch object approaches or touches a sensing electrode unit, the finger or other touch object changes the dielectric between the odd-numbered sensing electrode unit and the even-numbered sensing electrode unit, which changes the odd-numbered sense.
  • the coupling capacitance between the electrode unit and the even sensing electrode unit changes the coupling current between the sensing electrode units, and the AC touch signal on the detecting electrode line connected to the odd sensing electrode unit also occurs accordingly.
  • the signal detecting circuit 242 can detect the detecting electrode line whose coupling current is the largest or the coupling current exceeds a certain threshold by detecting the change of the amplitude of the AC touch signal on each of the odd detecting electrode lines; the signal detecting circuit 242 Detecting the change of the touch signal on each detection electrode line, or finding the detection electrode line whose phase change of the AC touch signal is the largest or the phase change of the AC touch signal exceeds a certain threshold; and then according to the control electrode of the TFT unit at this time Line, the touched sensing electrode unit can be determined to find the position of the finger or other touch object on the touch substrate 210. .
  • the active touch system 200 becomes a touch system that can detect the position of the touch point.
  • the signal detecting circuit 242 detects the touch signals on the plurality of detecting electrode lines at multiple times.
  • the change exceeds a certain threshold, that is, the charging current of the plurality of sensing electrode units is detected to exceed a certain threshold, thereby finding the position of the plurality of fingers on the touch substrate 210.
  • the active touch system 200 also becomes a touch system that can distinguish multiple touch points.
  • the active touch system 200 shown in FIG. 2 includes a touch substrate 210, a thin film transistor (TFT) array 220, a touch electrode, a touch circuit 240, and the like.
  • a thin film transistor (TFT) array 220 and a touch electrode are disposed on the touch substrate 210.
  • the touch electrodes are composed of the sensing electrode array 231 and two sets of intersecting row control electrode line groups 232 (2321, 2332, 2323, ..., 232m) and column detecting electrode line groups 233 (2331, 2332, 2333, ..., 233 ⁇ )
  • the control electrode lines and the detection electrode lines are separated by an insulating layer.
  • the touch circuit 240 has a touch excitation source 241, a signal detection circuit 242, and a control circuit 243.
  • Each control electrode line and each detection electrode line of the control electrode line group 232 and the detection electrode line group 233 are respectively connected to the gate and the source of each TFT unit of the TFT array 220; the sensing electrode units of the sensing electrode array 231 are respectively
  • the detection electrode line group 233 is connected to the touch excitation source 241 and the signal detection circuit 242 in the touch circuit 240.
  • the control electrode line group 232 is connected to the control circuit 243 in the touch circuit 240.
  • the control circuit 243 of the touch control circuit 240 outputs a square wave control signal to the control electrode lines of the control electrode line group 232 in a scanning manner, and the TFTs to which the control electrode lines to which the square wave control signals are applied are connected.
  • the unit is switched between the on and off states, the frequency of the square wave control signal is not less than ⁇ , and the TFT unit connected to the control electrode line to which the AC control signal is not applied is in an off state; the touch excitation source 241 of the touch circuit 240 is simultaneously directed to the detection electrode DC detection excitation is applied to each detection electrode line of the line group 233.
  • the control circuit 243 switches between the on and off states of the TFT cells on one row of control electrode lines, the DC touch signals on the respective detection electrode lines intermittently flow into the TFT control unit to be connected to the row control electrode lines.
  • a pulsed DC signal is formed on the sensing electrode unit in the sensing electrode unit; and the signal detecting circuit 242 of the touch control circuit 240 switches between the on and off states of the TFT unit connected to the control electrode line.
  • the column detects changes in the touch signals on the respective detection electrode lines.
  • the control circuit 243 outputs an AC control signal to each control electrode line row by row
  • the signal detection circuit 242 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • a coupling capacitance is formed between the finger or other touch object and the sensing electrode unit, and the pulsed DC signal on the sensing electrode unit passes through the coupling.
  • the capacitor portion leaks out, and a DC leakage current is formed on the detection electrode line connected to the sensing electrode unit; the signal detection circuit 242 can find the DC by detecting the change of the DC touch signal on each detection electrode line.
  • the active touch system 200 becomes a touch system that can detect the position of the touch point.
  • the touch excitation applied to each detection electrode line is a DC signal
  • the DC touch signal on the detection electrode line is substantially not Leaking out the coupling capacitance between the finger or other touch object and the detection electrode line; or, the DC touch signal that leaks out from the coupling capacitance between the finger or other touch object and the detection electrode line, compared to the finger or
  • the pulsed DC signal leaked out by the coupling capacitance between the other touch object and the sensing electrode unit is much smaller, and the operation misjudgment that may occur when the operator touches the detecting electrode line is avoided.
  • the active touch system 200 shown in FIG. 2 includes a touch substrate 210, a thin film transistor (TFT) array 220, a touch electrode, a touch circuit 240, and the like.
  • a thin film transistor (TFT) array 220 and a touch electrode are disposed on the touch substrate 210.
  • the touch electrodes are composed of the sensing electrode array 231 and two sets of intersecting row control electrode line groups 232 (2321, 2332, 2323, ..., 232m) and column detecting electrode line groups 233 (2331, 2332, 2333, ..., 233 ⁇ )
  • the control electrode lines and the detection electrode lines are separated by an insulating layer.
  • the touch circuit 240 has a touch excitation source 241, a signal detection circuit 242, and a control circuit 243.
  • Each control electrode line and each detection electrode line of the control electrode line group 232 and the detection electrode line group 233 are respectively connected to the gate and the source of each TFT unit of the TFT array 220; the sensing electrode units of the sensing electrode array 231 are respectively The detection electrode line group 233 is connected to the touch excitation source 241 and the signal detection circuit 242 of the touch control circuit 240; the control electrode line group 232 is connected to the control circuit 243 of the touch control circuit 240.
  • the control circuit 243 of the touch control circuit 240 outputs a sine wave AC control signal to each control electrode line of the control electrode line group 232 in a scanning manner, and connects the control electrode lines to which the sine wave AC control signal is applied.
  • the TFT unit is switched in the form of a sine wave in the on and off states, and the TFT unit connected to the control electrode line to which the AC control signal is not applied is in an off state; the touch excitation source 241 of the touch circuit 240 is simultaneously directed to the detection electrode line group.
  • Each detection electrode line of 233 applies a sine wave AC touch excitation; the frequency of the control signal is much lower than the frequency of the touch excitation signal, and the frequency of the touch excitation signal is not less than 10 KHz.
  • the control circuit 243 changes the sinusoidal switching between the on and off states of the TFT unit on one row of control electrode lines, the AC touch signal on each detection electrode line is modulated by the control signal, flows into the TFT unit and controls the line.
  • a signal in the form of a modulated carrier is formed on the sensing electrode unit in the sensing electrode unit connected to the electrode line;
  • a signal detecting circuit 242 of the touch circuit 240 is connected to the TFT unit connected to the control electrode line
  • the on and off states detect the change of the touch signal on each of the detection electrode lines column by column during the sinusoidal transformation between the on and off states.
  • the control circuit 243 outputs an AC control signal to each control electrode line row by row
  • the signal detection circuit 242 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • a finger or other touch A coupling capacitor is formed between the object and the sensing electrode unit, and the carrier signal on the sensing electrode unit is partially leaked through the coupling capacitor, and an alternating current leakage current is formed on the detecting electrode line connected to the sensing electrode unit;
  • the measuring circuit 242 detects the change of the AC touch signal on each detecting electrode line, and demodulates the relatively high frequency touch signal into a low frequency signal of the control signal frequency to find out that the AC leakage current is the largest or the AC leakage current exceeds a certain threshold detection electrode line; according to the control electrode line that turns on the sinusoidal transformation between the on and off states of the TFT unit at this time, the touched sensing electrode unit can be determined, thereby finding out that the finger or other touch object is touching
  • the position on the substrate 210 is controlled.
  • the active touch system 200 becomes a touch system that can detect the position of the touch point.
  • the active touch system 200 shown in FIG. 2 includes a touch substrate 210, a thin film transistor (TFT) array 220, a touch electrode, a touch circuit 240, and the like.
  • a thin film transistor (TFT) array 220 and a touch electrode are disposed on the touch substrate 210.
  • the touch electrodes are composed of the sensing electrode array 231 and two sets of intersecting row control electrode line groups 232 (2321, 2332, 2323, ..., 232m) and column detecting electrode line groups 233 (2331, 2332, 2333, ..., 233 ⁇ )
  • the control electrode lines and the detection electrode lines are separated by an insulating layer.
  • the touch circuit 240 has a touch excitation source 241, a signal detection circuit 242, and a control circuit 243.
  • Each control electrode line and each detection electrode line of the control electrode line group 232 and the detection electrode line group 233 are respectively connected to the gate and the source of each TFT unit of the TFT array 220; the sensing electrode units of the sensing electrode array 231 are respectively The detection electrode line group 233 is connected to the touch excitation source 241 and the signal detection circuit 242 of the touch control circuit 240; the control electrode line group 232 is connected to the control circuit 243 of the touch control circuit 240.
  • the control circuit 243 of the touch control circuit 240 outputs a sine wave AC control signal to each control electrode line of the control electrode line group 232 in a scanning manner, and connects the control electrode lines to which the sine wave AC control signal is applied.
  • the TFT unit is switched in the form of a sine wave in the on and off states, and the TFT unit connected to the control electrode line to which the AC control signal is not applied is in an off state; the touch excitation source 241 of the touch circuit 240 is simultaneously directed to the detection electrode line group.
  • a sine wave AC touch excitation is applied to each detection electrode line of 233; a touch excitation signal
  • the frequency is much lower than the frequency of the control signal, and the frequency of the control signal is not less than 10 kHz.
  • the control circuit 243 changes the sinusoidal switching between the on and off states of the TFT unit on the control electrode line
  • the AC touch signal on each detection electrode line is mounted on the control signal, flows into the TFT unit and controls the line.
  • a carrier signal for controlling the signal frequency is formed on the sensing electrode unit; and the signal detecting circuit 242 of the touch circuit 240 is connected to the TFT unit connected to the control electrode line.
  • the on and off states detect the change of the touch signal on each of the detection electrode lines column by column during the sinusoidal transformation between the on and off states.
  • the control circuit 243 outputs an AC control signal to each control electrode line row by row
  • the signal detection circuit 242 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • a coupling capacitance is formed between the finger or other touch object and the sensing electrode unit, and the carrier signal on the sensing electrode unit passes through the coupling capacitor. Partially leaking out, forming an alternating current leakage current on the detecting electrode line connected to the sensing electrode unit; the signal detecting circuit 242 detecting the change of the alternating touch signal on each detecting electrode line, and detecting the low frequency of the specific frequency
  • the touch signal is measured, and the relatively high frequency touch signal is demodulated into a low frequency signal of the control signal frequency, and the detection electrode line with the largest AC leakage current or the AC leakage current exceeding a certain threshold is found; and then the TFT unit is turned on according to the current
  • the sinusoidal control electrode line between the on and off states determines the touched sensing electrode unit to find the position of the finger or other touch object on the touch substrate 210.
  • the active touch system 200 becomes a touch system that can detect the position of the touch point.
  • the active touch system 300 and the display panel 301 as shown in FIG. 3 include a touch substrate 310, a thin film transistor (TFT) array 320, a touch electrode, a touch circuit 340, and the like.
  • a thin film transistor (TFT) array 320 and a touch electrode are disposed on the touch substrate 310.
  • the touch electrodes are composed of the sensing electrode array 331 and two sets of intersecting row control electrode line groups 332 (3321, 3332, 3323, ..., 332m), column detecting electrode line groups 333 (3331, 3332, 3333, ..., 333n) and
  • the shielding electrode 334 is composed of an insulating layer at the intersection of each control electrode line and each detecting electrode line.
  • the measuring electrode 333 line group and the shielding electrode 334 are both disposed on the non-touch surface of the touch substrate 210 facing away from the user.
  • the touch circuit 340 has a touch excitation source 341, a signal detection circuit 342, a control circuit 343, and a mask signal output terminal 344.
  • Each control electrode line and each detection electrode line of the control electrode line group 332 and the detection electrode line group 333 are respectively connected to the gate and the source of each TFT unit of the TFT array 320; the sensing electrode units of the sensing electrode array 331 are respectively Connecting the drains of the TFT units; the detecting electrode group 333 is connected to the touch excitation source 341 and the signal detecting circuit 342 in the touch circuit 340; the control electrode group 332 is connected to the control circuit 343 in the touch circuit 340, and the shielding electrode 334 connects the masked signal output 344 in touch circuit 340.
  • the control circuit 343 of the touch control circuit 340 outputs a square wave control signal to the control electrode lines of the control electrode line group 332 in a scanning manner, and the TFTs to which the control electrode lines to which the square wave control signals are applied are connected.
  • the unit is switched between the on and off states, and the TFT unit connected to the control electrode line to which the AC control signal is not applied is in an off state;
  • the touch excitation source 341 of the touch control circuit 340 simultaneously applies to each detection electrode line of the detection electrode line group 333.
  • the DC touch excitation; the shield signal output terminal 344 of the touch circuit 340 applies a DC shield signal to the shield electrode 334.
  • the control circuit 343 switches between the on and off states of the TFT cells on one row of control electrode lines, the DC touch signals on the respective detection electrode lines intermittently flow into the TFT control unit through the TFT unit.
  • a pulsed DC signal is formed on the sensing electrode unit; and the signal detecting circuit 342 of the touch control circuit 340 is switched between the on and off states of the TFT unit connected to the control electrode line.
  • the column detects changes in the touch signals on the respective detection electrode lines.
  • the control circuit 343 outputs an AC control signal to each control electrode line row by row
  • the signal detection circuit 342 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • a coupling capacitance is formed between the finger or other touch object and the sensing electrode unit, and the pulsed DC signal on the sensing electrode unit passes through the coupling.
  • the capacitor portion leaks out, and a DC leakage current is formed on the detection electrode line connected to the sensing electrode unit; the signal detection circuit 342 can find the DC by detecting the change of the DC touch signal on each detection electrode line.
  • the active touch system 300 becomes a touch system that can detect the position of the touch point.
  • Applying a DC shielding signal to the shielding electrode 334 causes the pulsed DC signal on the sensing electrode unit to leak out through the coupling capacitance portion between the sensing electrode unit and the shielding electrode 334, so that the detecting electrode line is stored.
  • the shield electrode 334 which has a DC leakage current in the background but is applied with a DC shield signal, isolates the influence of the display signal on the display panel 301 on the touch signal.
  • shielding electrode 334 which is the same as the control signal waveform, frequency and phase.
  • the pulse DC signal on the sensing electrode unit is also the same as the control signal waveform, frequency and phase, on the shielding electrode 334.
  • the shielding signal is the same as the signal waveform, frequency and phase on the sensing electrode unit; the pulse DC signal on the sensing electrode unit can be reduced as much as possible, and the coupling capacitance between the sensing electrode unit and the shielding electrode 334 is leaked simultaneously.
  • the shielding electrode 334 can in turn isolate the influence of the display signal on the display panel 301 on the touch signal.
  • the active touch system 300 and the display panel 301 as shown in FIG. 3 include a touch substrate 310, a thin film transistor (TFT) array 320, a touch electrode, a touch circuit 340, and the like.
  • a thin film transistor (TFT) array 320 and a touch electrode are disposed on the touch substrate 310.
  • the touch electrodes are composed of the sensing electrode array 331 and two sets of intersecting row control electrode line groups 332 (3321, 3332, 3323, ..., 332m), column detecting electrode line groups 333 (3331, 3332, 3333, ..., 333n) and
  • the shielding electrode 334 is composed of an insulating layer at the intersection of each control electrode line and each detecting electrode line.
  • the touch circuit 340 has a touch excitation source 341, a signal detection circuit 342, a control circuit 343, and a mask signal output terminal 344.
  • Each control electrode line and each detection electrode line of the control electrode line group 332 and the detection electrode line group 333 are respectively connected to the gate and the source of each TFT unit of the TFT array 320; the sensing electrode units of the sensing electrode array 331 are respectively Connecting the drain of each TFT unit; the detecting electrode group 333 is connected to the touch excitation source 341 and the signal detecting circuit 342 in the touch circuit 340; the control electrode line group 332 is connected to the control circuit 343 in the touch circuit 340, and the shielding electrode 334 connects the masked signal output 344 in touch circuit 340.
  • the control circuit 343 of the touch control circuit 340 outputs a DC control signal to each control electrode line of the control electrode line group 332 in a scanning manner, and the TFT unit to which the control electrode line to which the DC control signal is applied is placed.
  • the TFT unit connected to the control electrode line to which the DC control signal is not applied is in an off state; the touch excitation source 341 of the touch control circuit 340 simultaneously goes to the detection electrode line of the detection electrode line group 333.
  • the shield signal output terminal 344 of the touch circuit 340 applies an AC shield signal to the shield electrode 334, and the waveform, frequency and phase of the AC shield signal and the waveform and frequency of the touch signal applied to the detection electrode group 333 Same as phase.
  • the control circuit 343 turns on the TFT unit on the control electrode line
  • the AC touch signal on each detection electrode line flows into the sensing electrode unit connected to the row control electrode line through the TFT unit;
  • the signal detecting circuit 342 of the touch control circuit 340 detects the change of the touch signal on each of the detecting electrode lines column by column during the conduction state of the TFT unit connected to the control electrode line.
  • the control circuit 343 outputs a DC control signal to each control electrode line row by row
  • the signal detection circuit 342 detects the touch signal on the sensing electrode unit connected to the control electrode line through the TFT unit line by line. Variety.
  • the signal detecting circuit 342 can detect the change of the AC touch signal on each detecting electrode line, and can find the detecting electrode line with the largest leakage current or the leakage current exceeding a certain threshold; the signal detecting circuit 342 detecting the change of the touch signal on each detection electrode line, or finding the detection electrode line whose phase change of the AC touch signal is the largest or the phase change of the AC touch signal exceeds a certain threshold; and then controlling the TFT unit according to the current time
  • the electrode line can determine the touched sensing electrode unit to find the position of the finger or other touch object on the touch substrate 310.
  • the active touch system 300 becomes a touch system that can detect the position of the touch point.
  • the shielding electrode 334 is applied with the same waveform, frequency and phase of the AC touch signal on the detecting electrode group, and the shielding signal on the shielding electrode 334 is the same as the signal waveform, frequency and phase on the sensing electrode unit;
  • the AC touch signal on the sensing electrode unit is reduced, and the coupling capacitance between the sensing electrode unit and the shielding electrode 334 is leaked, and the shielding electrode 334 can isolate the influence of the display signal on the display panel 301 on the touch signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne un procédé de commande pour commande tactile active, intéressant un écran à commande tactile, et plus particulièrement un écran à commande tactile active, ainsi qu'un procédé de commande de celui-ci. La présente invention présente un procédé de commande pour un système de commande tactile active et propose une forme d'onde de signal de commande pour chaque ligne d'électrode du système à commande tactile active et un procédé de détection coordonnée qui réalise efficacement une détection indépendante point par point des unités d'électrode de détection configurées en réseau. La coopération des formes d'onde du signal de commande sur la ligne d'électrode de commande et la ligne d'électrode de détection est utilisée pour distinguer la différence entre les signaux produits par un opérateur qui touche la ligne d'électrode de détection et qui touche l'unité d'électrode de détection, ce qui évite un signal pouvant produire une action erronée lorsque l'opérateur touche la ligne d'électrode de détection ; en outre, l'influence du panneau d'affichage utilisé avec le système à commande tactile active, en étant à recouvrement avec ce dernier, sur le signal de commande tactile est éliminée en appliquant un signal de blindage à l'électrode de blindage.
PCT/CN2011/081152 2011-10-21 2011-10-21 Procédé de commande pour système de commande tactile active WO2013056472A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201180001856.5A CN103221905B (zh) 2011-10-21 2011-10-21 一种有源触控系统的驱动方法
PCT/CN2011/081152 WO2013056472A1 (fr) 2011-10-21 2011-10-21 Procédé de commande pour système de commande tactile active
TW101138818A TW201322097A (zh) 2011-10-21 2012-10-19 有源觸控系統的驅動方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/081152 WO2013056472A1 (fr) 2011-10-21 2011-10-21 Procédé de commande pour système de commande tactile active

Publications (1)

Publication Number Publication Date
WO2013056472A1 true WO2013056472A1 (fr) 2013-04-25

Family

ID=48140343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/081152 WO2013056472A1 (fr) 2011-10-21 2011-10-21 Procédé de commande pour système de commande tactile active

Country Status (3)

Country Link
CN (1) CN103221905B (fr)
TW (1) TW201322097A (fr)
WO (1) WO2013056472A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI506510B (zh) * 2013-09-30 2015-11-01 OLED touch device
EP3040823A1 (fr) * 2014-12-31 2016-07-06 LG Display Co., Ltd. Dispositif d'affichage et procede de commande correspondant
US9965071B2 (en) 2014-12-31 2018-05-08 Lg Display Co., Ltd. Display device and driving method thereof
CN110163086A (zh) * 2019-04-09 2019-08-23 缤刻普达（北京）科技有限责任公司 基于神经网络的健身动作识别方法、装置、设备及介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI501135B (zh) * 2013-12-02 2015-09-21 LCD touch device
CN107562366A (zh) * 2017-09-28 2018-01-09 珠海普林芯驰科技有限公司 手势识别方法、计算机装置及计算机可读存储介质
TWI710941B (zh) * 2019-11-29 2020-11-21 友達光電股份有限公司 觸控顯示裝置
CN115701774A (zh) * 2021-06-01 2023-02-10 广州视源电子科技股份有限公司 一种触控基板、触控驱动方法、触控输入设备的识别方法及触控设备
CN114047836A (zh) * 2021-11-02 2022-02-15 云谷（固安）科技有限公司 一种显示装置
CN114442852B (zh) * 2022-01-28 2023-03-10 北京奕斯伟计算技术股份有限公司 触控面板、触控方法、电子装置和存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101118470A (zh) * 2006-08-02 2008-02-06 陈其良 触控式平板显示器电极结构
CN101131618A (zh) * 2006-08-20 2008-02-27 陈其良 象素复用触控式平板显示器
CN201765574U (zh) * 2009-09-27 2011-03-16 智点科技（深圳）有限公司 一种可排除触控影响显示的触控显示器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8044943B2 (en) * 2008-06-03 2011-10-25 Himax Technologies Limited Touch panel
CN101408826B (zh) * 2008-11-17 2010-07-07 友达光电股份有限公司 电容式触控面板的感测装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101118470A (zh) * 2006-08-02 2008-02-06 陈其良 触控式平板显示器电极结构
CN101131618A (zh) * 2006-08-20 2008-02-27 陈其良 象素复用触控式平板显示器
CN201765574U (zh) * 2009-09-27 2011-03-16 智点科技（深圳）有限公司 一种可排除触控影响显示的触控显示器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI506510B (zh) * 2013-09-30 2015-11-01 OLED touch device
EP3040823A1 (fr) * 2014-12-31 2016-07-06 LG Display Co., Ltd. Dispositif d'affichage et procede de commande correspondant
US9965071B2 (en) 2014-12-31 2018-05-08 Lg Display Co., Ltd. Display device and driving method thereof
US10423262B2 (en) 2014-12-31 2019-09-24 Lg Display Co., Ltd. Display device and driving method thereof
CN110163086A (zh) * 2019-04-09 2019-08-23 缤刻普达（北京）科技有限责任公司 基于神经网络的健身动作识别方法、装置、设备及介质

Also Published As

Publication number Publication date
TW201322097A (zh) 2013-06-01
CN103221905A (zh) 2013-07-24
CN103221905B (zh) 2017-09-05

Similar Documents

Publication Publication Date Title
WO2013056472A1 (fr) Procédé de commande pour système de commande tactile active
US8698770B2 (en) Active touch system
TWI448778B (zh) 接觸偵測裝置及顯示裝置
CN103135868B (zh) 具有触摸传感器的显示设备、电位控制方法及程序
CN105867699B (zh) 显示面板及触控压力检测方法
EP2746840B1 (fr) Dispositif d'affichage à cristaux liquides TN et son procédé de commande tactile
TWI478029B (zh) 電容感應觸控方法
CN103092400B (zh) 具有触摸传感器的显示装置、电位控制方法
US8902189B2 (en) Method of detecting touch positions and touch position detection apparatus for performing the method
WO2010130111A1 (fr) Ecran à commande tactile capacitive numérique
CN101866228A (zh) 触摸屏、液晶显示装置及触摸屏的驱动方法
CN102375629B (zh) 内嵌电容式触摸屏及其驱动方法和驱动装置
CN106775162B (zh) 触控显示面板及其驱动方法、触控显示装置
CN103186297B (zh) 一种电容式触摸液晶显示面板和液晶显示装置
CN203149528U (zh) 一种触摸显示装置
CN104035249B (zh) 集成触控功能的液晶显示装置及其触控位置的检测方法
CN105138179B (zh) 全嵌入式触摸屏及移动装置
TW201602852A (zh) 靜電和壓電式的觸控面板
US8217871B2 (en) Touch-controlled liquid crystal display and touch panel thereof
CN106775078B (zh) 触控显示面板、驱动方法及触控显示装置
CN106775161A (zh) 触控显示面板、驱动方法和触控显示装置
KR102418579B1 (ko) 터치 패널 액정표시장치 및 그의 구동 방법
TWI498781B (zh) 一種觸控裝置、觸控面板及其控制方法
WO2013063722A1 (fr) Système de commande tactile actif du type à capacité mutuelle
CN104252274A (zh) 内嵌式触控屏幕及其驱动装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11874310

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase

Ref document number: 11874310

Country of ref document: EP

Kind code of ref document: A1