WO2016019628A1 - 阵列基板、触控显示装置及驱动方法 - Google Patents

阵列基板、触控显示装置及驱动方法 Download PDF

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Publication number
WO2016019628A1
WO2016019628A1 PCT/CN2014/088087 CN2014088087W WO2016019628A1 WO 2016019628 A1 WO2016019628 A1 WO 2016019628A1 CN 2014088087 W CN2014088087 W CN 2014088087W WO 2016019628 A1 WO2016019628 A1 WO 2016019628A1
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Prior art keywords
touch
signal
switching elements
touch electrodes
switching
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PCT/CN2014/088087
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English (en)
French (fr)
Inventor
郑丹
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京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US14/774,887 priority Critical patent/US10101834B2/en
Publication of WO2016019628A1 publication Critical patent/WO2016019628A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Definitions

  • Embodiments of the present invention relate to an array substrate, a touch display device, and a driving method.
  • a mutual-capacitor in-cell touch screen adds a touch driving line and a touch sensing line to an existing thin film field effect transistor (TFT) array substrate to implement a touch function.
  • TFT thin film field effect transistor
  • a matrix of metal lines is formed on the TFT array substrate in a horizontal direction and a vertical direction.
  • the horizontal metal lines are touch driving electrodes
  • the vertical metal lines are touch sensing electrodes, touch sensing electrodes, and touch driving electrodes. Insulate each other.
  • the operation process of the in-cell touch screen is: loading a touch driving signal on the touch driving electrode, and detecting a voltage signal that the touch sensing line is coupled through the mutual capacitance, in the process, if The human body touches the touch screen, and the human body electric field acts on the capacitance formed between the touch sensing electrode and the touch driving electrode, so that the capacitance value of the capacitor changes, thereby changing the voltage signal coupled by the touch sensing line, according to The position of the contact can be determined by a change in the voltage signal.
  • At least one embodiment of the present invention provides an array substrate, including: a data line layer including a plurality of first touch electrodes; a common electrode layer including a plurality of second touch electrodes, the second touch electrodes and The first touch electrode insulation cross setting; the first switching signal line.
  • Each of the first touch electrodes includes a plurality of data lines and a plurality of first switching elements, a control end of the first switching elements is coupled to the first switching signal line, and a first of the first switching elements The end is connected to a data line in the first touch electrode, and the second end of the first switching element is connected to another data line in the first touch electrode to enable the first switch When the component is turned on, all of the data lines in the first touch electrode are electrically connected to each other.
  • the data line to which the first end of the first switching element is connected is adjacent to the data line to which the second end is connected.
  • each of the first touch electrodes includes 15 data lines 20; and/or, each of the second touch electrodes has a width of 4-10 mm.
  • the second touch electrode is made of indium tin oxide.
  • the array substrate further includes: a second switching signal line and a plurality of second switching elements; wherein the second switching signal line is connected to the plurality of second contacts by a plurality of second switching elements
  • the control electrode is configured to enable the plurality of second touch electrodes to be electrically connected to each other when the plurality of second switching elements connected to the plurality of second touch electrodes are turned on; and/or
  • the second switching signal line is connected to the plurality of first touch electrodes through a plurality of second switching elements, and is configured to turn on the plurality of second switching elements connected to the plurality of first touch electrodes.
  • the plurality of first touch electrodes are electrically connected to each other.
  • the control end is connected to the second switching signal line, the first of which is Connecting one of the second touch electrodes to the second end of the second touch electrode; and/or the plurality of second switching elements for connecting the plurality of first touch electrodes Any one of the second switching elements, wherein the control end is connected to the second switch signal line, the first end of which is connected to one of the first touch electrodes, and the second end is connected to the other of the first A data line in a touch electrode.
  • any one of the plurality of second switching elements connecting the plurality of second touch electrodes one of the second touch electrodes and the first end thereof are connected Another second touch electrode connected to the second end thereof is adjacent; and/or, for any one of the plurality of second switching elements connecting the plurality of first touch electrodes One of the first touch electrodes connected to the first end thereof is adjacent to the other of the first touch electrodes connected to the second end thereof.
  • At least one embodiment of the present invention provides a touch display device comprising: the array substrate of any of the above.
  • At least one embodiment of the present invention provides a driving method of a touch display device, the touch display device including a first switching element and a first switching signal line, the method comprising: a first switch during a touch time period The signal end applies a conduction signal to the control end of each of the first switching elements through the first switch signal line, and the first touch signal end applies a touch scan signal to the plurality of first touch electrodes or The touch signal ends apply touch scan signals to the plurality of second touch electrodes; each of the first switch elements is turned off during the display period.
  • At least one embodiment of the present invention provides a driving method of a touch display device, the touch display device including a second switching element, a second switching signal line, a first switching element, and a first switching signal line, the method including The first switch signal end applies an on signal to the control end of each of the first switching elements through the first switch signal line during the touch period, and each of the second switch elements is turned off, first The touch signal end sequentially applies a touch scan signal to the plurality of first touch electrodes or the second touch signal end sequentially applies a touch scan signal to the plurality of second touch electrodes; And displaying, in the transition period that the time period is not started, the first switch signal end applies an on signal to the control end of each of the first switching elements through the first switch signal line, and the second switch signal end Applying an on signal to the control terminal of each of the second switching elements through the second switching signal line; each of the first switching elements is turned off during the display period, each of the second Switching element Open.
  • the first switching signal end passes through the first switching signal line to each of the The control end of the first switching element applies an on signal
  • the second switch signal end applies an on signal to the control end of each of the second switching elements through the second switching signal line, during the display period
  • each of the first switching elements is turned off and each of the second switching elements is turned off.
  • FIG. 1 is a schematic structural view of a touch display panel
  • FIG. 2 is a schematic diagram of a touch array assembly disposed in FIG. 1;
  • FIG. 3 is a schematic structural diagram of an array substrate according to a first embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an array substrate according to a second embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a driving method of a touch display device according to a first embodiment of the present invention
  • FIG. 6 is a schematic diagram of waveforms of driving signals of an array substrate according to a second embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a driving method of a touch display device according to a second embodiment of the present invention.
  • first substrate 12 display array component 13 touch array component
  • FIG. 1 is a schematic structural view of an in-cell touch display device.
  • the touch display panel includes a first substrate 11 and a second substrate 18 .
  • the display substrate assembly 12 and the touch array assembly 13 are disposed on the first substrate 11.
  • the black matrix 17 and the color filter layer 16 are disposed on the second substrate 18.
  • a liquid crystal layer 14 is disposed between the first substrate 11 and the second substrate 18, and after the first substrate 11 and the second substrate 18 are oppositely disposed, the frame glue 15 may be used to seal the first substrate 11 and the first substrate
  • the two substrates 18 form a liquid crystal cell.
  • the touch array component 13 includes touch drive electrodes and touch sense electrodes that are oppositely intersected, as shown in FIG. 2 .
  • the touch array component 13 can include the touch drive electrodes Tx and the touch sensing electrodes Rx that are oppositely connected.
  • the touch drive electrodes T 1 , T 2 . . . T m are not connected to each other, and the touch sensing electrodes R 1 and R 2 are connected to each other.
  • ...R n are not connected to each other, and thus can be used to implement touch of a touch screen.
  • FIG. 1 and FIG. 2 needs to additionally add a touch array component 13 in the liquid crystal cell, such as a touch driving electrode and a touch sensing electrode, resulting in a high cost of the in-cell touch display panel.
  • a touch array component 13 in the liquid crystal cell such as a touch driving electrode and a touch sensing electrode
  • the preparation process of the in-cell touch display panel is complicated.
  • FIG. 3 is a schematic structural view of an array substrate according to a first embodiment of the present invention.
  • the array substrate of this embodiment includes a data line layer, a common electrode layer, and a first switching signal line 34.
  • the array substrate of the embodiment of the invention includes a plurality of gate lines and a plurality of data lines, the gate lines and the data lines crossing each other thereby defining pixel units arranged in an array, each of the pixel units being included as an opening
  • the gate of the thin film transistor of each pixel is electrically connected to the corresponding gate line
  • the source is electrically connected to the corresponding data line
  • the drain is electrically connected to the corresponding pixel electrode.
  • the data line layer includes a plurality of first touch electrodes 32, each of the first touch electrodes 32 includes a plurality of data lines 37 and a plurality of first switching elements 33.
  • One end of the first touch electrodes 32 in this embodiment Connect the first touch signal terminal.
  • the common electrode layer includes a plurality of second touch electrodes 31, and one end (lower end in the figure) of the second touch electrodes 31 is connected to the second touch signal terminal (not shown in FIG. 3).
  • the second touch electrode 31 is insulated from the first touch electrode 32.
  • the first switching signal line 34 is connected to the first switching signal terminal.
  • the control terminal a is connected to the first switch signal line 34, and the first end b is connected to a piece of data in the first touch electrode 32.
  • the second end c of the line 37 is connected to the other data line 37 in the first touch electrode 32, so that when all the first switching elements 33 in the first touch electrode 32 are turned on, the first touch All of the data lines within the control electrode 32 are electrically connected to each other.
  • the touch display device including the array substrate when the touch display device including the array substrate is in the touch period, the plurality of data lines of one first touch electrode 32 are electrically connected to each other as a whole. Therefore, all the first switching elements 33 in each of the first touch electrodes 32 of the array substrate in the embodiment must be turned on during the touch period, so that all the data lines in the first touch electrodes 32 are turned on. Turn on to better identify the touch position.
  • the touch display device including the array substrate is in the touch period, if one or more first switching elements in the first touch electrode are disconnected, a portion of the data lines in the first touch electrode 32 are caused. If it cannot be turned on, the touch may not be sensitive or the touch position may not be recognized. Therefore, in the touch time period, the adjacent data lines D 1 , D 2 ... D 20 in FIG. 3 are electrically connected through the plurality of first switching elements as the first first touch electrode R 1 ; sequentially, adjacent The data lines D (q-19) , D (q-18) ... D q are electrically connected through the plurality of first switching elements as the nth first touch electrode R n .
  • n and q are natural numbers.
  • the data line layer is used as the first touch electrode
  • the common electrode layer is used as the second touch electrode. Therefore, the touch display device including the array substrate does not need the structure as shown in FIG. In this way, the touch array component is additionally disposed on the array substrate, thereby solving the problem that the touch display panel is separately provided with the touch array component, and the manufacturing process is complicated.
  • first touch signal end, the second touch signal end, and the first switch signal end may be connected to different pins of one driving circuit, or may be respectively connected to different driving circuits.
  • first touch signal end, the second touch signal end, and the first switch signal end are connected to different pins of a driving circuit; here, for the sake of clarity and simplicity, there is no figure.
  • the reference numerals of the first touch signal end, the second touch signal end, and the first switch signal end of the driving circuit are shown in FIG.
  • the first touch electrode can be a touch sensing electrode (Rx), and the second touch electrode can be a touch driving electrode (Tx); in this case, the second touch signal end is used for The touch sensing signal is applied to the second touch electrode, and the first touch signal end detects a voltage signal for coupling the touch scan signal.
  • the first touch electrode can be a touch driving electrode
  • the second touch electrode can be a touch sensing electrode. In this case, the first touch signal end is used to apply a touch scan signal to the first touch electrode.
  • the second touch signal terminal detects a voltage signal for coupling the touch scan signal.
  • the second touch electrode can be made of a transparent conductive material such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • This embodiment is for illustrative purposes only, and the material of the second touch electrode is not limited. The specific material may be selected according to actual needs.
  • the width of the second touch electrode may be set within a range of 4-10 mm, and/or the width of the first touch electrode may be set. In the range of 4-10mm.
  • the widths of the first touch electrode and the second touch electrode are set within 5-7 mm.
  • the accuracy of the display pixel (liquid crystal or OLED) in the touch screen is usually about 100 micrometers, and then one second touch electrode and the first touch electrode in the embodiment cover multiple rows or columns of array substrates.
  • Pixel unit. The precision referred to in this embodiment refers to the size of a touch unit of a touch screen or a pixel unit of a display screen.
  • the width of one of the data lines of the array substrate is 50-120 ⁇ m. Therefore, the first touch electrode in this embodiment may include 15-20 data lines to make the width of the first touch sensing electrode. Set within 5-7mm.
  • the first touch electrode may further include one or two data lines.
  • the width of the first touch electrode may be within 50-150 ⁇ m.
  • the data line connecting the first end b of the first switching element and the data line connected to the second end c are disposed adjacent to each other, as shown in FIG.
  • Such an arrangement can also better improve the touch sensitivity and identification in the touch time period. Confirmation rate.
  • the array substrate shown in FIG. 3 includes a first switching signal line.
  • a plurality of first switching signal lines connecting the signal ends of the first switch may also be disposed.
  • the embodiments of the present invention are not limited thereto, and may be set according to actual needs.
  • the array substrate in this embodiment can realize the display function and the touch function, and can simplify the preparation process of the array substrate while reducing the manufacturing cost of the array substrate.
  • FIG. 4 is a schematic structural view of an array substrate according to a second embodiment of the present invention.
  • the array substrate in this embodiment further includes a second switching signal line 35 and a second switching element 36 on the basis of the array substrate shown in FIG. 3; for the sake of clarity, the first switch is not shown.
  • the signal line 34, the data line 37, and the first switching element 33 but it should be understood that the first switching signal line 34, the data line 37, and the first switching element 33 are still present in this embodiment.
  • the second switch signal line in the embodiment is connected to the second switch signal end; the second switch signal line 35 is connected to the plurality of second touch electrodes 31 through the plurality of second switch elements 36, so that When the plurality of second switching elements 36 of the plurality of second touch electrodes 31 are turned on, the plurality of second touch electrodes 31 are electrically connected to each other.
  • the array substrate of the embodiment can enable the plurality of second switching elements 36 connected to the plurality of second touch electrodes 31 during a transition period in which the touch time period ends and the display time period does not start.
  • the plurality of second touch electrodes 31 are electrically connected to each other, thereby realizing charge sharing of the plurality of second touch electrodes 31.
  • the second switch signal line 35 is connected to the plurality of first touch electrodes 32 through a plurality of second switching elements 36 to connect the plurality of first touch electrodes.
  • the plurality of second switching elements 36 of 32 are turned on, the plurality of first touch electrodes 32 are electrically connected to each other, thereby realizing charge sharing of the plurality of first touch electrodes 32.
  • the array substrate of the embodiment can guide the plurality of second switching elements 36 connected to the plurality of first touch electrodes 32 during a transition period in which the touch time period ends and the display time period does not start.
  • the plurality of first touch electrodes 32 are electrically connected to each other to implement charge sharing, and thus the plurality of first touch electrodes can be The accumulated charge within 32 is eliminated.
  • the array substrate in this embodiment can not only reduce the manufacturing cost of the array substrate of the in-cell touch panel, but also eliminate the accumulated charges in the data line layer and/or the common electrode layer in the array substrate, thereby reducing the driving circuit. Power consumption.
  • control terminal a is connected to the second switching signal line 35.
  • the first end b is connected to one of the second touch electrodes 31, and the second end c is connected to the other of the second touch electrodes 31.
  • the first end b is connected
  • the second touch electrode 31 is adjacent to another second touch electrode 31 connected to the second end c thereof, as shown in FIG. 4 .
  • the control end thereof is connected to the second switching signal line 35, the first of which The terminal b is connected to one of the first touch electrodes 32, and the second end c is connected to one of the first touch electrodes 32.
  • the first end b is connected to any one of the plurality of second switching elements 36 connecting the plurality of first touch electrodes 32
  • One of the first touch electrodes 32 is adjacent to the other of the first touch electrodes 32 connected to the second end c thereof.
  • the array substrate shown in FIG. 4 includes a second switching signal line 35 connected to the signal terminal of the second switch.
  • a plurality of second switching signal lines may be disposed, which are not limited in the embodiment of the present invention, and may be set according to actual needs.
  • the second switch signal end, the first switch signal end, the first touch signal end, and the second touch signal end may be connected to different pins of a driving circuit, or may be connected to different driving circuits.
  • the second switch signal end, the first switch signal end, the first touch signal end, and the second touch signal end shown in FIG. 4 are connected to the same driving circuit, and are not shown in the figure for clarity and simplicity.
  • the respective reference numerals are shown on the drive circuit.
  • the common electrode layer can be divided into a plurality of independent portions T 1 , T 2 ... T m as the second touch electrodes 31, and the data line layer can be divided into a plurality of independent portions R 1 , R 2 ... R n serves as the first touch electrode 32.
  • the adjacent second touch electrodes 31 are respectively connected to one second switching element 36, and the adjacent first touch electrodes 32 are respectively connected to one second switching element 36.
  • the array substrate of the embodiment provides a touch function through the data line layer and the common electrode layer. Therefore, the touch display device including the array substrate can solve the problem of high cost of separately setting the touch array component, and artifacts appear during display. Control the problem of insensitivity.
  • the touch function is realized by using the existing data line layer and the common electrode layer in the array substrate, so that no additional steps are needed, thereby simplifying the process and reducing the cost.
  • the first switching element 33 (shown in FIG. 3) is turned on, the second switching element 36 is turned off, and the second touch signal end is opposite to the second touch electrode 31.
  • a touch scan signal is applied, and the first touch signal end is configured to detect a voltage signal of the touch scan signal coupled in the first touch electrode 32.
  • the second touch electrode 31 and the first touch electrode 32 are insulated and arranged to form a touch sensing bridge, and there are a total of m*n sensing bridges, and the sensing bridges form mutual capacitance.
  • the first touch signal end loads the touch scan signal on the first touch electrode as the touch drive electrode, and the second touch signal end detects the voltage signal that the second touch electrode is coupled through the mutual capacitance. If a human body contacts a certain sensing bridge in the array substrate, the electric field of the human body acts on the mutual capacitance, so that the capacitance value of the mutual capacitance of the sensing bridge changes, thereby changing the voltage of the second touch electrode coupling.
  • the signal based on the change in the output voltage signal, determines the position of the contact.
  • the array substrate in FIG. 4 is in a transition period in which the touch period ends and the display period does not start, the first switch signal end turns on the first switching element 33, and the second switch signal end makes the second switch
  • the component 36 is turned on, and all of the first touch electrodes 32 are connected to each other and all of the second touch electrodes 31 are connected to each other to achieve charge sharing, so that positive and negative charges are neutralized and eliminated or reduced.
  • the charge accumulated in the data line layer and the common electrode layer, or the accumulated charges are evenly distributed to avoid excessive local charge.
  • each of the first switching elements is turned off, and the second switching element is turned off.
  • all the data lines 37 of the data line layer are independent of each other, and the driving circuit inputs the gate driving signals row by row to make the data line layer
  • the thin film transistors connected to the middle data lines are opened column by column, and the pixel electrodes of the respective pixel units are charged by the data lines, thereby forming an electric field between the pixel electrodes and the common electrodes, controlling the deflection of the liquid crystal molecules, and realizing the screen display.
  • the above-mentioned array substrate of the embodiment of the present invention can realize charge sharing, which can avoid interference of the display mode and the touch mode of the touch control in the box due to charge accumulation in the prior art, and reduce or eliminate the accumulation on the metal electrode.
  • Charge-induced visual artifacts and insensitive touches can reduce the cost of the array substrate.
  • the data line layer in this embodiment may be located on the gate line layer of the array substrate, and the data line layer includes a plurality of parallel data lines and a source and a drain of the TFT of each pixel unit.
  • the drain of the TFT is connected to the data line, and the gate line and the data line in the gate line layer may define pixels of the pixel area.
  • the data lines in the data line layer can be formed from molybdenum metal or other metals or alloys.
  • the data line has a thickness of 2000 to 4000 angstroms.
  • the data signal in order to improve the dynamic performance of the touch display device, the data signal generally needs to be reversed in polarity, and the polarity of the data signal on the same data line changes with respect to the common voltage (Vcom) once every time the inversion occurs.
  • Vcom common voltage
  • charge sharing of the data lines can be realized by turning on the first switching element and the second switching signal on the first switching signal terminal during the transition period.
  • the positive and negative charges of all data lines are neutralized with each other, so that the current used for neutralization is not required or reduced when the polarity of the data line is reversed, the swing of the display signal outputted by the driving circuit is reduced, and the work of the existing driving circuit is saved. Consumption.
  • the first touch electrode 32 and the second touch electrode 31 may be perpendicular to each other, as shown in FIG. 4 .
  • an embodiment of the present invention further provides a touch display device, which may include the array substrate described in any embodiment of the present invention.
  • the touch display device can be: electronic paper, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, watch, etc., any product or component that has both display function and touch function.
  • the touch display device in the embodiment of the invention can improve the display effect (such as reducing artifacts) and the touch effect (improving the touch sensitivity), and can simplify the preparation process of the touch display device and reduce the production cost. Improve the production efficiency of the touch display device.
  • the touch display device in the embodiment of the present invention can be an in-cell touch screen, and the touch display device with the built-in touch screen technology has the advantages of thinner thickness, wider viewing angle, higher performance, and lower cost.
  • FIG. 5 is a schematic flowchart of a driving method of a touch display device according to a first embodiment of the present invention.
  • the touch display device includes the array substrate of the first embodiment of the present invention.
  • the driving method of the touch display device is as follows.
  • the first switch signal end applies a conduction signal to the control end of each of the first switching elements through the first switch signal line, and the first touch signal end is directed to the plurality of first touches Control power Applying a touch scan signal or applying a touch scan signal to the plurality of second touch electrodes;
  • each of the first switching elements is turned off.
  • the touch display device applied to the driving method may include the array substrate shown in FIG. 3 described above.
  • other signals may be applied according to the needs of implementing the function, such as sequentially applying a gate line driving signal to the gate lines of the array substrate during the display period, but the above is the embodiment of the present invention.
  • the technical features are irrelevant and will not be described here.
  • the drive circuit to which the signal is applied can be implemented in a variety of forms well known in the art.
  • Applying the touch scan signal to the plurality of first touch electrodes or the second touch signal end sequentially applying the touch scan signals to the plurality of second touch electrodes means: if the first touch electrode As the touch driving electrode, the first touch signal end sequentially applies a touch scan signal to the plurality of first touch electrodes; if the second touch electrode serves as the touch drive electrode, the second touch signal end faces the plurality of The second touch electrode sequentially applies a touch scan signal.
  • the display function and the touch function of the touch display device that share the data line and the common electrode into the touch electrodes are realized by time-division driving.
  • FIG. 7 is a schematic flow chart of a driving method of a touch display device according to a second embodiment of the present invention.
  • the touch display device includes the array substrate of the second embodiment of the present invention.
  • the driving method of the touch display device is as follows.
  • the first switch signal end applies an on signal to the control end of each of the first switching elements through the first switch signal line, and the second switch element is disconnected, and the first touch signal end is turned to multiple
  • the first touch electrode sequentially applies a touch scan signal, or the second touch signal end sequentially applies a touch scan signal to the plurality of second touch electrodes;
  • the first switch signal end applies a conduction signal to the control end of each first switching element through the first switch signal line during a transition period in which the touch time period ends and the display time period does not start, and the second switch The signal end applies an on signal to the control end of each of the second switching elements through the second switching signal line;
  • the first switching signal end passes through the first switching signal line to each of the first switching elements.
  • the control terminal applies an on signal
  • the second switch signal terminal applies an on signal to the control end of each second switching element through the second switch signal line, and each of the first switches in the other sub-periods during the display period The components are disconnected and each second switching element is disconnected.
  • each of the first switching elements is turned off, and each of the second switching elements is turned off; a period of time and during a sub-period in which any two adjacent gate lines on the array substrate are sequentially applied with a gate drive signal, an on-signal is applied to each of the first switching elements, to each The second switching element applies an on signal.
  • each of the first switching elements is turned off and each of the second switching elements is turned off during the entire display period.
  • the second switch signal end, the first switch signal end, the first touch signal end, and the second touch signal end can be connected to different pins of a driving circuit or to different driving circuits.
  • the touch display device applied to the driving method may include the array substrate shown in FIG. 4 described above.
  • the drive circuit to which the signal is applied can be implemented in a variety of forms well known in the art. Applying the touch scan signal to the plurality of first touch electrodes or the plurality of second touch electrodes sequentially means: if the first touch electrode is used as the touch drive electrode, the drive circuit sequentially performs the plurality of first touch electrodes The touch scan signal is applied; if the second touch electrode is used as the touch drive electrode, the drive circuit sequentially applies the touch scan signal to the plurality of second touch electrodes.
  • FIG. 6 is a schematic diagram of the driving signal waveform of the embodiment.
  • the second touch electrodes T1, T2, T3, etc.
  • the touch control signal is sequentially applied to the control period, and a common level is applied as the common electrode (Vcom) in the touch phase;
  • the first touch electrode including R1 of the data lines Data1, Data2, etc.
  • the gate lines do not output signals during the touch period, and sequentially output the gate line scan signals during the display period.
  • the first switch (Switch 1) is always turned on during the touch time period, so that the data line forms a touch sensing electrode; the second switch (Switch 2) is turned on during the transition period; during a specific sub-period of the display time period, That is, two adjacent gate lines are sequentially applied with an interval between gate drive signals, and both the first switch and the second switch are turned on.
  • the driving method shown in FIG. 5 is different from the driving signal waveform of the driving method shown in FIG. 7 in that there is no driving signal of the second switch, and the first switch is turned off during the display period, and during the transition period.
  • the first switch can be turned off or turned on as long as it is advantageous to switch to the display time period.
  • the driving method shown in FIG. 7 can not only neutralize the positive and negative charges on adjacent data lines, but also neutralize the positive and negative charges on the corresponding common electrode layer, thereby greatly reducing the touch. Sensitive, displaying artifacts, and reducing the power consumption of the driver circuit, as well as the cost of the driver circuit.
  • the driving circuit outputs a data signal for display to the data line.
  • the data signal usually needs to be performed.
  • Sexual reversal that is, as shown in FIG. 6, after the gate drive signal is output to the gate of the thin film transistor connected thereto in a display period, the data signal output on the data line is relative to the common voltage ( The polarity of Vcom) changes once, from a positive polarity voltage to a negative polarity voltage, or conversely, since the original charge needs to be neutralized first during the inversion, the power consumption of the drive circuit is large.
  • the 7 can realize charge sharing in the data lines, so that the positive and negative charges of all the data lines are neutralized with each other, so that the current for the neutralization is not required or reduced when the polarity of the data lines is reversed, and the current is reduced.
  • the swing of the data signal output by the driving circuit saves the power consumption of the driving circuit.
  • first switching element and the second switching element in the embodiment of the present invention are, for example, transistors, preferably thin film field effect transistors, but embodiments of the present invention are not limited thereto, as long as the requirements in the claims are met, first The switching element and the second switching element can be any form of switching element.

Abstract

一种阵列基板、触控显示装置及驱动方法。该阵列基板包括：数据线层，包括多个第一触控电极(32)；公共电极层，包括多个第二触控电极(31)；第一开关信号线(34)。每个所述第一触控电极(32)包括多条数据线(37)和多个第一开关元件(33)，所述第一开关元件(33)的控制端(a)与所述第一开关信号线(34)连接，所述第一开关元件(33)的第一端(b)与所述第一触控电极(32)内的一条数据线(37)连接，所述第一开关元件(33)的第二端(c)与所述第一触控电极(32)内的另一条数据线(37)连接，以使在所述第一开关元件(33)导通时，所述第一触控电极(32)内的所有数据线(37)彼此导通。该阵列基板相比单独设置触控阵列组件成本低，制备工艺简单。

Description

阵列基板、触控显示装置及驱动方法 技术领域
本发明的实施例涉及一种阵列基板、触控显示装置及驱动方法。
背景技术
目前，互电容内嵌式(in cell)触控屏在现有的薄膜场效应晶体管(Thin Film Transistor，TFT)阵列基板中增加了触控驱动线和触控感应线，以实现触控功能。例如，在TFT阵列基板上沿水平方向和垂直方向形成金属线的矩阵，水平方向的金属线为触控驱动电极，垂直方向的金属线为触控感应电极，触控感应电极和触控驱动电极相互绝缘。该内嵌式(in cell)触控屏的工作过程为：在触控驱动电极上分别加载触控驱动信号，检测触控感应线通过互电容耦合出的电压信号，在此过程中，若有人体触控触控屏，人体电场就会作用在触控感应电极和触控驱动电极之间形成的电容上，使电容的电容值发生变化，进而改变触控感应线耦合出的电压信号，根据电压信号的变化，就可以确定触点位置。
发明内容
本发明的至少一个实施例提供一种阵列基板，包括：数据线层，包括多个第一触控电极；公共电极层，包括多个第二触控电极，所述第二触控电极与所述第一触控电极绝缘交叉设置；第一开关信号线。每个所述第一触控电极包括多条数据线和多个第一开关元件，所述第一开关元件的控制端与所述第一开关信号线连接，所述第一开关元件的第一端与所述第一触控电极内的一条数据线连接，所述第一开关元件的第二端与所述第一触控电极内的另一条数据线连接，以使在所述第一开关元件导通时，所述第一触控电极内的所有数据线彼此导通。
在一个实施例中，所述第一开关元件的第一端连接的数据线与第二端连接的数据线相邻。
在一个实施例中，每个所述第一触控电极包括的数据线的个数为15至 20个；和/或，每个所述第二触控电极的宽度为4-10mm。
在一个实施例中，所述第二触控电极由氧化铟锡制成。
在一个实施例中，所述阵列基板还包括：第二开关信号线和多个第二开关元件；其中，所述第二开关信号线通过多个第二开关元件连接所述多个第二触控电极，配置来使在连接所述多个第二触控电极的所述多个第二开关元件都导通时，所述多个第二触控电极彼此导通；和/或，所述第二开关信号线通过多个第二开关元件连接所述多个第一触控电极，配置来使连接所述多个第一触控电极的所述多个第二开关元件都导通时，所述多个第一触控电极彼此导通。
在一个实施例中，对于连接所述多个第二触控电极的所述多个第二开关元件中的任意一个第二开关元件，其控制端连接所述第二开关信号线，其第一端连接一个所述第二触控电极，其第二端连接另一个所述第二触控电极；和/或，对于连接所述多个第一触控电极的所述多个第二开关元件中的任意一个第二开关元件，其控制端连接所述第二开关信号线，其第一端连接一个所述第一触控电极中的一条数据线，其第二端连接另一个所述第一触控电极中的一条数据线。
在一个实施例中，对于连接所述多个第二触控电极的所述多个第二开关元件中的任意一个第二开关元件，其第一端连接的一个所述第二触控电极和其第二端连接的另一个所述第二触控电极相邻；和/或，对于连接所述多个第一触控电极的所述多个第二开关元件中的任意一个第二开关元件，其第一端连接的一个所述第一触控电极和其第二端连接的另一个所述第一触控电极相邻。
本发明的至少一个实施例提供一种触控显示装置，包括：上面任一所述的阵列基板。
本发明的至少一个实施例提供一种触控显示装置的驱动方法，所述触控显示装置包括第一开关元件和第一开关信号线，所述方法包括：在触控时间段，第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，第一触控信号端向所述多个第一触控电极施加触控扫描信号或者第二触控信号端向所述多个第二触控电极施加触控扫描信号；在显示时间段，每个所述第一开关元件断开。
本发明至少一个实施例提供一种触控显示装置的驱动方法，所述触控显示装置包括第二开关元件、第二开关信号线、第一开关元件和第一开关信号线，所述方法包括：在触控时间段，第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，每个所述第二开关元件断开，第一触控信号端向所述多个第一触控电极依次施加触控扫描信号或者第二触控信号端向所述多个第二触控电极依次施加触控扫描信号；在触控时间段结束、显示时间段未开始的过渡时间段，所述第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，所述第二开关信号端通过所述第二开关信号线向每个所述第二开关元件的控制端施加导通信号；在所述显示时间段内，每个所述第一开关元件断开，每个所述第二开关元件断开。
例如，在所述显示时间段的任两条相邻栅线被先后施加栅极驱动信号之间的子时间段内，所述第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，所述第二开关信号端通过所述第二开关信号线向每个所述第二开关元件的控制端施加导通信号，在显示时间段的其他子时间段，每个所述第一开关元件断开，每个所述第二开关元件断开。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为一种触控显示面板的结构示意图；
图2为图1中布置的触控阵列组件的示意图；
图3为本发明第一实施例提供的阵列基板的结构示意图；
图4为本发明第二实施例提供的阵列基板的结构示意图；
图5为本发明第一实施例提供的触控显示装置的驱动方法的流程示意图；
图6为本发明第二实施例提供的阵列基板的驱动信号波形示意图；
图7为本发明第二实施例提供的触控显示装置的驱动方法的流程示意图。
附图标记说明：
11第一基板          12显示阵列组件     13触控阵列组件
14液晶层            15边框胶           16彩色滤光层
17黑色矩阵          18第二基板
31第二触控电极      32第一触控电极     33第一开关元件
34第一开关信号线    35第二开关信号线   36第二开关元件
37数据线。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为一种内嵌式触控显示装置的结构示意图。如图1所示，触控显示面板包括第一基板11和第二基板18。所述第一基板11上设置显示阵列组件12和触控阵列组件13，所述第二基板18上设置黑色矩阵17和彩色滤光层16。所述第一基板11和所述第二基板18之间提供有液晶层14，且所述第一基板11和第二基板18相对设置后，可采用边框胶15密封以使第基板11和第二基板18形成液晶盒(cell)。触控阵列组件13包括异面相交的触控驱动电极和触控感应电极，如图2所示。触控阵列组件13可包括异面相交的触控驱动电极Tx和触控感应电极Rx，所述触控驱动电极T1、T2…Tm互不相连，触控感应电极R1，R2…Rn互不相连，由此可用于实现触控屏的触控。
然而，上述图1和图2所示的结构中需要在液晶盒内额外增加触控阵列组件13，如触控驱动电极和触控感应电极，导致内嵌式触控显示面板的成本较高，且使得内嵌式触控显示面板的制备工艺复杂。
图3示出了本发明第一实施例提供的阵列基板的结构示意图。如图3所示，本实施例的阵列基板包括：数据线层、公共电极层和第一开关信号线34。
本发明实施例的阵列基板包括多条栅线和多条数据线，这些栅线和数据线彼此交叉由此限定了按阵列排列的像素单元，每个像素单元可包括作为开 关元件的薄膜晶体管和用于控制液晶的排列的像素电极和公共电极。例如，每个像素的薄膜晶体管的栅极与相应的栅线电连接，源极与相应的数据线电连接，漏极与相应的像素电极电连接。
所述数据线层包括多个第一触控电极32，每个第一触控电极32包括多条数据线37和多个第一开关元件33；本实施例中第一触控电极32的一端连接第一触控信号端。所述公共电极层包括多个第二触控电极31，所述第二触控电极31的一端(图中的下端)连接第二触控信号端(图3中未示出)。所述第二触控电极31与所述第一触控电极32绝缘交叉设置。第一开关信号线34连接第一开关信号端。
对于任意一个第一触控电极32内的任意一个第一开关元件33，其控制端a连接所述第一开关信号线34，其第一端b连接该第一触控电极32内的一条数据线37，其第二端c连接该第一触控电极32内的另一条数据线37，由此在该第一触控电极32内的所有第一开关元件33导通时，该第一触控电极32内的所有数据线彼此导通。
可理解的是，在本实施例中，包括该阵列基板的触控显示装置处于触控时间段时，一个第一触控电极32的多条数据线互相导通成为整体。为此，在触控时间段，本实施例中的阵列基板每一第一触控电极32内的所有第一开关元件33必须导通，进而使得该第一触控电极32内的所有数据线实现导通，以较好的识别触碰位置。
此外，包括该阵列基板的触控显示装置处于触控时间段时，若第一触控电极内的某一个或多个第一开关元件断开，使得第一触控电极32内的部分数据线无法导通，则可能出现触控不灵敏，或者，无法识别触碰位置。因此，在触控时间段，图3中相邻的数据线D1，D2…D20通过多个第一开关元件电连接作为第一个第一触控电极R1；依次地，相邻的数据线D(q-19)，D(q-18)…Dq通过多个第一开关元件电连接作为第n个第一触控电极Rn。这里，n、q为自然数。
本实施例中的阵列基板，通过将数据线层作为第一触控电极，公共电极层作为第二触控电极，由此，包括阵列基板的触控显示装置不需要如图1所示的结构那样在阵列基板上额外设置触控阵列组件，由此可解决触控显示面板单独设置触控阵列组件成本高，制备工艺复杂的问题。
应说明的是，前述第一触控信号端、第二触控信号端、第一开关信号端可连接到一个驱动电路的不同引脚，也可分别连接到不同的驱动电路。如图3所示的实施例中，第一触控信号端、第二触控信号端、第一开关信号端连接到一个驱动电路的不同引脚；这里，为了清楚、简便起见，没有在图3中示出标识该驱动电路的第一触控信号端、第二触控信号端、第一开关信号端的附图标记。
举例来说，前述第一触控电极可为触控感应电极(Rx)，第二触控电极可为触控驱动电极(Tx)；此种情况下，第二触控信号端用于向第二触控电极施加触控扫描信号，第一触控信号端检测用于耦合触控扫描信号的电压信号。或者，第一触控电极可为触控驱动电极，第二触控电极可为触控感应电极，此种情况下，第一触控信号端用于向第一触控电极施加触控扫描信号，第二触控信号端检测用于耦合触控扫描信号的电压信号。
例如，第二触控电极可由例如氧化铟锡(ITO)的透明导电材料制备，本实施例仅为举例说明，不限定第二触控电极的材料，具体材料可根据实际需要选定。
本实施例中，为提高阵列基板在触控时间段内的识别准确率，可将第二触控电极的宽度设置在4-10mm范围内，和/或，将第一触控电极的宽度设置在4-10mm范围内。例如，在一个示例中，将第一触控电极和第二触控电极的宽度设在5-7mm内。可理解的是，例如触摸屏中显示像素(液晶或OLED)的精度通常在100微米左右，则本实施例中的一个第二触控电极和第一触控电极会覆盖多行或多列阵列基板的像素单元。本实施例中所指的精度是指的触摸屏的一个触控单元或者显示屏的像素单元的尺寸。
例如，阵列基板的数据线层中一条数据线的宽度为50-120μm，故，本实施例中的第一触控电极可包括15-20条数据线，以使第一触控感应电极的宽度设在5-7mm内。
当然，在特殊情况下，第一触控电极还可包括一条或两条数据线，此时，第一触控电极的宽度可在50-150μm内。
例如，为简化阵列基板的制备工艺，同时减少阵列基板的成本，使第一开关元件的第一端b连接的数据线和第二端c连接的数据线相邻设置，如图3所示。这样的布置还能够较好的提高触控时间段内的触碰灵敏度和识别准 确率。
可选地，图3中示出的阵列基板包括一条第一开关信号线。当然，在其他实施例中，还可设置多条连接第一开关信号端的第一开关信号线。本发明的实施例不对其进行限定，可根据实际需要设置。
本实施例中的阵列基板能够实现显示功能和触控功能，且能够简化阵列基板的制备工艺，同时降低阵列基板的制造成本。
图4示出了本发明第二实施例提供的阵列基板的结构示意图。如图4所示，本实施例中的阵列基板在图3所示的阵列基板的基础上，还包括第二开关信号线35和第二开关元件36；为了清楚起见，没有示出第一开关信号线34、数据线37和第一开关元件33，但是应该理解，在该实施例中仍然存在第一开关信号线34、数据线37和第一开关元件33。
本实施例中的第二开关信号线连接第二开关信号端；所述第二开关信号线35通过多个第二开关元件36连接所述多个第二触控电极31，以使在连接所述多个第二触控电极31的所述多个第二开关元件36都导通时，所述多个第二触控电极31彼此导通。
也就是说，本实施例的阵列基板能够在触控时间段结束、显示时间段未开始的过渡时间段，使连接所述多个第二触控电极31的所述多个第二开关元件36都导通时，多个第二触控电极31彼此导通，进而实现多个第二触控电极31的电荷共享。
在另一种可能的实现方式中，所述第二开关信号线35通过多个第二开关元件36连接所述多个第一触控电极32，以使连接所述多个第一触控电极32的所述多个第二开关元件36都导通时，所述多个第一触控电极32彼此导通，进而实现多个第一触控电极32的电荷共享。此外，本实施例的阵列基板能够在触控时间段结束、显示时间段未开始的过渡时间段，使连接所述多个第一触控电极32的所述多个第二开关元件36都导通，且每一第一触控电极32内的所有第一开关元件33导通时，所述多个第一触控电极32彼此导通实现电荷共享，进而可将多个第一触控电极32内累积的电荷消除。
本实施例中的阵列基板，不仅能够降低内嵌式触控屏的阵列基板的制造成本，同时还能够将阵列基板中数据线层和/或公共电极层中累积的电荷消除，进而降低驱动电路的功耗。
在一个示例中，对于连接所述多个第二触控电极31的所述多个第二开关元件36中的任意一个第二开关元件36，其控制端a连接所述第二开关信号线35，其第一端b连接一个所述第二触控电极31，其第二端c连接另一个所述第二触控电极31。
例如，为降低制备工艺的复杂度，对于连接所述多个第二触控电极31的所述多个第二开关元件36中的任意一个第二开关元件36，其第一端b连接的一个所述第二触控电极31和其第二端c连接的另一个所述第二触控电极31相邻，如图4所示。
此外，对于连接所述多个第一触控电极32的所述多个第二开关元件36中的任意一个第二开关元件36，其控制端连接所述第二开关信号线35，其第一端b连接一个所述第一触控电极32中的一条数据线，其第二端c连接另一个所述第一触控电极32中的一条数据线。相应地，为降低制备工艺的复杂度，对于连接所述多个第一触控电极32的所述多个第二开关元件36中的任意一个第二开关元件36，其第一端b连接的一个所述第一触控电极32和其第二端c连接的另一个所述第一触控电极32相邻。
另外，图4中示出的阵列基板包括一条连接第二开关信号端的第二开关信号线35。当然，在其他实施例中，还可设置多条第二开关信号线，本发明的实施例不对其进行限定，可根据实际需要设置。
例如，第二开关信号端、第一开关信号端、第一触控信号端、第二触控信号端可连接到一个驱动电路的不同引脚，也可连接到不同的驱动电路。在图4中示出的上述第二开关信号端、第一开关信号端、第一触控信号端、第二触控信号端连接到同一个驱动电路中，为了清楚简便起见，没有在图中的驱动电路上示出各自的附图标记。
在图4中，公共电极层可被分为若干个独立部分T1，T2…Tm作为第二触控电极31，数据线层可被分为若干个独立部分R1，R2…Rn作为第一触控电极32。而且，在图中，相邻的第二触控电极31分别连接一个第二开关元件36，相邻的第一触控电极32分别连接一个第二开关元件36。
本实施例的阵列基板，通过数据线层和公共电极层提供触控功能，由此，包括阵列基板的触控显示装置可解决单独设置触控阵列组件成本高，且显示时出现伪像，触控不灵敏的问题。
也就是说，本实施例中利用阵列基板中已有的数据线层和公共电极层实现触控功能，因此无需增加其他工序，因而可简化工艺，降低成本。
图4中的阵列基板在触控时间段，第一开关元件33(图3中示出)导通，第二开关元件36断开，第二触控信号端对所述第二触控电极31施加触控扫描信号，所述第一触控信号端可用于检测第一触控电极32中耦合的所述触控扫描信号的电压信号。
例如，第二触控电极31和第一触控电极32绝缘交叉设置构成触控感应桥，共有m*n个感应桥，这些感应桥都形成互电容。例如，第一触控信号端对作为触控驱动电极的第一触控电极加载触控扫描信号，第二触控信号端检测第二触控电极通过互电容耦合出的电压信号，在此过程中，如果有人体接触阵列基板中的某个感应桥时，人体电场就会作用在互电容上，使此处感应桥的互电容的电容值发生变化，进而改变第二触控电极耦合的电压信号，根据输出电压信号的变化，就可以确定触点位置。
另外，图4中的阵列基板在触控时间段结束、显示时间段未开始的过渡时间段，第一开关信号端使所述第一开关元件33导通，第二开关信号端使第二开关元件36导通，所有的所述第一触控电极32相连导通和所有的第二触控电极31相连导通分别实现电荷共享(charge sharing)，以使正负电荷中和而消除或减少数据线层和公共电极层中累积的电荷，或者使积累的电荷平均分布而避免出现局部电荷过多。
在显示时间段，每个第一开关元件断开，第二开关元件断开，此时，数据线层的所有数据线37相互独立，驱动电路逐行输入栅极驱动信号，以使数据线层中数据线连接的薄膜晶体管逐列打开，各个像素单元的像素电极由数据线充电，进而像素电极与公共电极形成电场，控制液晶分子的偏转，实现画面显示。
由此，本发明实施例的上述阵列基板能够实现电荷共享，可避免现有技术中因电荷累积使盒内触控的显示模式与触控模式产生干扰，减少或消除由累积在金属电极上的电荷引起的视觉伪象和触控不灵敏等问题，同时可以降低阵列基板的成本。
应说明的是，本实施例中的数据线层可位于阵列基板的栅线层上，且数据线层中包括多个并行的数据线以及各个像素单元的TFT的源极和漏极，所 述TFT漏极与所述数据线连接，所述栅线层中的栅线和数据线可限定像素区域的像素。
例如，数据线层中的数据线可由钼金属或其他金属或合金形成。例如，数据线的厚度为2000至4000埃。
例如，为了增进触控显示装置的动态表现，数据信号一般需要极性反转，每经过一次反转，同一条数据线上的数据信号相对于公共电压(Vcom)的极性就变化一次。这样，由于在每次输出数据信号之前需要电流来中和之前的电荷，导致现有的驱动电路的功耗较大。
上述实施例通过在过渡时间段内，第一开关信号端使第一开关元件导通和第二开关信号端使第二开关元件导通，可以实现数据线的电荷共享(charge sharing)，以使所有数据线的正负电荷相互中和，从而数据线极性反转时不需要或减少用于中和的电流，降低了驱动电路所输出显示信号的摆幅，节省现有的驱动电路的功耗。
例如，为提高阵列基板在应用中的触控效果，可将第一触控电极32和第二触控电极31相互垂直设置，如图4所示。
根据本发明的另一方面，本发明的实施例还提供一种触控显示装置，该触控显示装置可包括本发明任意实施例中描述的阵列基板。
举例来说，触控显示装置可以为：电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、手表等任何兼具显示功能和触控功能的产品或部件。
本发明实施例中的触控显示装置，能够较好的提高显示效果(如减少伪像)和触控效果(提高触控灵敏度)，同时可以简化触控显示装置的制备工艺，可降低生产成本，提高触控显示装置的生产效率。
本发明实施例中的触控显示装置可为内嵌式触控屏，采用内嵌触控屏技术的触控显示装置具有厚度更薄、视角更宽、性能更高、成本更低的优点。
如图5所示，图5示出了本发明第一实施例提供的触控显示装置的驱动方法的流程示意图，该触控显示装置包括本发明第一实施例的阵列基板，本实施例中触控显示装置的驱动方法如下所述。
501、在触控时间段，第一开关信号端通过第一开关信号线向每个所述第一开关元件的控制端施加导通信号，第一触控信号端向所述多个第一触控电 极施加触控扫描信号或者第二触控信号端向所述多个第二触控电极施加触控扫描信号；
502、在显示时间段，每个第一开关元件断开。
应用于该驱动方法的触控显示装置可包括前述图3所示的阵列基板。当然，在驱动该触控显示装置时，根据实现功能的需要，还可能施加其他信号，比如在显示时间段需要给阵列基板的栅线依次施加栅线驱动信号，但与本发明实施例的上述技术特征之处无关，在此不再赘述。另外，施加信号的驱动电路可以采用本领域所熟知的多种形式实现。第一触控信号端向多个第一触控电极施加触控扫描信号或第二触控信号端向多个第二触控电极依次施加触控扫描信号指的是：若第一触控电极作为触控驱动电极，则第一触控信号端向多个第一触控电极依次施加触控扫描信号；若第二触控电极作为触控驱动电极，则第二触控信号端向多个第二触控电极依次施加触控扫描信号。
本发明实施例通过分时驱动，实现将数据线、公共电极分时共享为触控电极的触控显示装置的显示功能和触控功能。
如图7所示，图7示出了本发明第二实施例提供的触控显示装置的驱动方法的流程示意图，该触控显示装置包括本发明第二实施例的阵列基板，本实施例中触控显示装置的驱动方法如下所述。
701、在触控时间段，第一开关信号端通过第一开关信号线向每个第一开关元件的控制端施加导通信号，第二开关元件断开，第一触控信号端向多个第一触控电极依次施加触控扫描信号，或者，第二触控信号端向多个第二触控电极依次施加触控扫描信号；
702、在触控时间段结束、显示时间段未开始的过渡时间段，第一开关信号端通过所述第一开关信号线向每个第一开关元件的控制端施加导通信号，第二开关信号端通过所述第二开关信号线向每个第二开关元件的控制端施加导通信号；
703、在显示时间段内的任两个相邻栅线被先后施加栅极驱动信号之间的子时间段内，所述第一开关信号端通过第一开关信号线向每个第一开关元件的控制端施加导通信号，第二开关信号端通过第二开关信号线向每个第二开关元件的控制端施加导通信号，在显示时间段内的其他子时间段，每个第一开关元件断开，每个第二开关元件断开。
也就是说，在显示时间段且在所述阵列基板上的任一栅线被施加栅极驱动信号时，每个第一开关元件断开，每个第二开关元件断开；在所述显示时间段且在所述阵列基板上的任两个相邻栅线被先后施加栅极驱动信号之间所处的子时间段内，向每个所述第一开关元件施加导通信号，向每个所述第二开关元件施加导通信号。在另一个实施例中，在整个显示时间段内，每个第一开关元件断开，每个第二开关元件断开。
在一个实施例中，第二开关信号端、第一开关信号端、第一触控信号端、第二触控信号端可连接到一个驱动电路的不同引脚或连接到不同的驱动电路。
应用于该驱动方法的触控显示装置可包括前述图4所示的阵列基板。当然，在驱动该触控显示装置时，根据实现功能的需要，还可能施加其他信号，但与本发明实施例的上述技术特征之处无关，在此不再赘述。另外，施加信号的驱动电路可以采用本领域所熟知的多种形式实现。向多个第一触控电极或多个第二触控电极依次施加触控扫描信号指的是：若第一触控电极作为触控驱动电极，则驱动电路向多个第一触控电极依次施加触控扫描信号；若第二触控电极作为触控驱动电极，则驱动电路向多个第二触控电极依次施加触控扫描信号。
为了更好的理解图7的驱动方法，图6示出了本实施例的驱动信号波形示意图，此处，第二触控电极(T1、T2、T3等)作为触控驱动电极，其在触控时间段被依次施加触控扫描信号，在触控阶段作为公共电极(Vcom)被施加公共电平；以第一触控电极(包括数据线Data1、Data2等的R1等)作为触控感应电极；栅线(Gate1、gate2、gate3等)在触控时间段不输出信号，在显示时间段依次输出栅线扫描信号。第一开关(Switch 1)在触控时间段始终导通，以使数据线形成触控感应电极；第二开关(Switch 2)在过渡阶段导通；在显示时间段的特定的子时间段，即两个相邻栅线被先后施加栅极驱动信号之间的间隔，第一开关和第二开关都导通。
图5所示的驱动方法与图7所示的驱动方法的驱动信号波形的不同之处在于，没有第二开关的驱动信号，并且第一开关在显示时间段都断开，而在过渡时间段，第一开关可以断开也可以导通，只要有利于转换到显示时间段即可。
图7所示的驱动方法不仅可以让相邻数据线上的正负电荷极性中和，同时也能将对应公共电极层上的正负电荷极性中和，由此可大幅减少触控不灵敏、显示伪像的问题，且能够降低驱动电路的功耗，以及驱动电路的成本。
特别地，在显示时间段，第一开关元件和第二开关元件均断开，驱动电路向数据线输出用于显示的数据信号，为了增进触控显示装置的动态表现，数据信号通常需要进行极性反转，即，如图6所示，在显示时间段，在一条栅线向与其相连的薄膜晶体管的栅极输出完栅极驱动信号之后，数据线上输出的数据信号相对于公共电压(Vcom)的极性就变化一次，从正极性电压变为负极性电压，或者相反，由于反转时需要先中和原来的电荷，导致驱动电路的功耗会很大。采用图7所示上述驱动方法可实现数据线中的电荷共享，以使所有数据线的正负电荷相互中和，从而数据线极性反转时不需要或减少用于中和的电流，降低了驱动电路所输出的数据信号的摆幅，节省驱动电路的功耗。
需要指出，本发明的实施例中的第一开关元件和第二开关元件例如为晶体管，优选为薄膜场效应晶体管，但是本发明的实施例不限于此，只要满足权利要求中的限定，第一开关元件和第二开关元件可以为任何形式的开关元件。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年8月7日递交的中国专利申请第201410386497.5号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (11)

  1. 一种阵列基板，包括：
    数据线层，包括多个第一触控电极；
    公共电极层，包括多个第二触控电极，所述第二触控电极与所述第一触控电极绝缘交叉设置；
    第一开关信号线；
    其中，每个所述第一触控电极包括多条数据线和多个第一开关元件，所述第一开关元件的控制端与所述第一开关信号线连接，所述第一开关元件的第一端与所述第一触控电极内的一条数据线连接，所述第一开关元件的第二端与所述第一触控电极内的另一条数据线连接，以使在所述第一开关元件导通时，所述第一触控电极内的所有数据线彼此导通。
  2. 根据权利要求1所述的阵列基板，其中，所述第一开关元件的第一端连接的数据线与第二端连接的数据线相邻。
  3. 根据权利要求1或2所述的阵列基板，其中，每个所述第一触控电极包括的数据线的条数为15至20条；
    和/或
    每个所述第二触控电极的宽度为4-10mm。
  4. 根据权利要求1至3任一所述的阵列基板，其中，
    所述第二触控电极由氧化铟锡制成。
  5. 根据权利要求1至4任一项所述的阵列基板，还包括：
    第二开关信号线；
    多个第二开关元件；
    其中，所述第二开关信号线通过所述多个第二开关元件连接所述多个第二触控电极，且配置来使连接所述多个第二触控电极的所述多个第二开关元件都导通时，所述多个第二触控电极彼此导通；
    和/或，
    所述第二开关信号线通过所述多个第二开关元件连接所述多个第一触控电极，且配置来使连接所述多个第一触控电极的所述多个第二开关元件都导通时，所述多个第一触控电极彼此导通。
  6. 根据权利要求5所述的阵列基板，其中，
    对于连接所述多个第二触控电极的所述多个第二开关元件中的任意一个第二开关元件，其控制端连接所述第二开关信号线，其第一端连接一个所述第二触控电极，其第二端连接另一个所述第二触控电极；
    和/或，
    对于连接所述多个第一触控电极的所述多个第二开关元件中的任意一个第二开关元件，其控制端连接所述第二开关信号线，其第一端连接一个所述第一触控电极中的一条数据线，其第二端连接另一个所述第一触控电极中的一条数据线。
  7. 根据权利要求6所述的阵列基板，其中，对于连接所述多个第二触控电极的所述多个第二开关元件中的任意一个第二开关元件，其第一端连接的一个所述第二触控电极和其第二端连接的另一个所述第二触控电极相邻；
    和/或，
    对于连接所述多个第一触控电极的所述多个第二开关元件中的任意一个第二开关元件，其第一端连接的一个所述第一触控电极和其第二端连接的另一个所述第一触控电极相邻。
  8. 一种触控显示装置，包括权利要求1-7任一项所述的阵列基板。
  9. 一种触控显示装置的驱动方法，所述触控显示装置包括权利要求1至4任一项所述的阵列基板，所述方法包括：
    在触控时间段，第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，第一触控信号端向所述多个第一触控电极施加触控扫描信号或者第二触控信号端向所述多个第二触控电极施加触控扫描信号；
    在显示时间段，每个所述第一开关元件断开。
  10. 一种触控显示装置的驱动方法，所述触控显示装置包括权利要求5至7任一项所述的阵列基板，所述方法包括：
    在触控时间段，第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，所述第二开关元件断开，第一触控信号端向所述多个第一触控电极依次施加触控扫描信号或者第二触控信号端向所述多个第二触控电极依次施加触控扫描信号；
    在触控时间段结束、显示时间段未开始的过渡时间段，所述第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，所述第二开关信号端通过所述第二开关信号线向每个所述第二开关元件的控制端施加导通信号；
    在所述显示时间段内，每个所述第一开关元件断开，每个所述第二开关元件断开。
  11. 根据权利要求10所述的驱动方法，其中，在所述显示时间段的任两个相邻栅线被先后施加栅极驱动信号之间的子时间段内，所述第一开关信号端通过所述第一开关信号线向每个所述第一开关元件的控制端施加导通信号，所述第二开关信号端通过所述第二开关信号线向每个所述第二开关元件的控制端施加导通信号，在显示时间段的其他子时间段，每个所述第一开关元件断开，每个所述第二开关元件断开。
PCT/CN2014/088087 2014-08-07 2014-10-01 阵列基板、触控显示装置及驱动方法 WO2016019628A1 (zh)

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