CN106353903B - The driving method of touch-control display panel and control mode touch mode - Google Patents

The driving method of touch-control display panel and control mode touch mode Download PDF

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Publication number
CN106353903B
CN106353903B CN201510995926.3A CN201510995926A CN106353903B CN 106353903 B CN106353903 B CN 106353903B CN 201510995926 A CN201510995926 A CN 201510995926A CN 106353903 B CN106353903 B CN 106353903B
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touch
control
mode
grid
sub
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CN106353903A (en
Inventor
刘同凯
彭仁杰
蔡嘉豪
张志豪
陈柏锋
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Innolux Corp
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Innolux Display Corp
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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
    • 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 potential barriers; including integrated passive circuit elements having potential barriers
    • 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • 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
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • 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 potential barriers; including integrated passive circuit elements having potential barriers
    • 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

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  • Computer Hardware Design (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Position Input By Displaying (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

The driving method of touch-control display panel and control mode touch mode.The touch-control display panel is operable in a display pattern and a control mode touch mode.In display pattern, data line transmits the pixel electrode of display data signal to panel, and the voltage of common electrode corresponding to pixel electrode is definite value；In control mode touch mode, data line transmits touch drive signal and receives touch sense signals to the pixel electrode of panel and by pixel electrode, and the voltage of common electrode corresponding to pixel electrode is to float.

Description

The driving method of touch-control display panel and control mode touch mode
Technical field
The present invention relates to a kind of touch-control display panel and its driving methods, and in particular to have general touch function and refer to The In-cell touch display panel of line discriminating function and its driving method of control mode touch mode.
Background technique
Embedded touch control display panel (Touch In Display, TID) is provided simultaneously with display function and touch function It is new-type to integrate escope.Capacitance-type built-in touch-control display panel, if with the transmitting of touch drive signal and touch sense signals Mode can be divided into mutual capacitance type and self-tolerant as differentiation.In the embedded touch control display panel of mutual capacitance type, touch drive signal is issued It is different from the path of touch sense signals is received.The embedded touch control display panel of self-tolerant is then to issue touch drive signal and connect The path for receiving touch sense signals is identical.Known self-tolerant embedded touch control display panel, common electrode is divided into rectangular The multiple electrodes block of configuration, each electrode block use during display as general common electrode, and during touch-control then It is used as touch-control sensing electrode, capacitor is formed by by between detecting electrode block and the touch control object of outside, to judge touch-control The position of object.
The multiple electrodes block for being divided into rectangular configuration can be connected to driving chip by other plain conductor respectively.Gold Belong to and be also easy to produce coupled capacitor between conducting wire and All other routes, coupled capacitor will cause signal variation and cause noise, and then influence The accuracy of touch-control sensing.Further, since the area of electrode block is big, it is simply possible to use in general touch-control sensing, can not be applied to more smart Thin identification of fingerprint sensing.
The present invention provides the drive of a kind of In-cell touch display panel and its control mode touch mode in view of being above-mentioned problem Dynamic method, can reduce coupled capacitor, and have touch function and finger print identification function simultaneously.
Summary of the invention
The present invention proposes that a kind of embedded touch shows (Touch In Display) panel, comprising: multiple pixels are located at One display area, these each pixels include: a pixel electrode；One first switching element is connected to the pixel electrode and a data Between line；And a common electrode, it the corresponding pixel electrode and is connected to altogether with electrode wires, wherein, should in display pattern Data line provides a data-signal to the pixel electrode by the first switching element, which provides one first current potential To the common electrode, which is definite value；Wherein, in control mode touch mode, which is passed by the first switching element It send a touch drive signal to the pixel electrode, and a touch sense signals is received by the pixel electrode, which has One second current potential, second current potential are to float.
According to one embodiment, above-mentioned In-cell touch display panel further include: multiple first grid polar curves are separately connected pair These first switching elements for these pixels answered, the display area include multiple region, these each sub-regions include multiple These first grid polar curves, in control mode touch mode, positioned at the display area these first grid polar curves can P-SCAN, or it is each these Sub-region drives independently of one another, these first grid polar curve P-SCANs in these sub-regions, or these each sub-regions that This independently drives, these first grid line lockings scanning in these sub-regions.
The present invention is it is also proposed that a kind of driving method of control mode touch mode, to drive such as above-mentioned embedded touch display surface Plate, comprising: selectively start a touch function or a finger print identification function；When starting the touch function, these sub-regions that This independently drives, these first grid line lockings scanning in these sub-regions；And when the starting finger print identification function When, these first grid polar curve P-SCANs positioned at the display area, or these each sub-regions drive independently of one another, are located at this These first grid polar curve P-SCANs in a little sub-regions.
According to above-mentioned each embodiment, the invention proposes the drivings of In-cell touch display panel and its control mode touch mode Method can reduce the coupling effect between touch-control sensing electrode and All other routes, and can meet touch function simultaneously and fingerprint is distinguished Know function.
Detailed description of the invention
Fig. 1 is the schematic top view for indicating the touch-control display panel of the embodiment of the present invention.
Fig. 2 is the synoptic circuit diagram of a pixel in the touch-control display panel of the embodiment of the present invention.
Fig. 3 A is schematic diagram of the pixel operation in display pattern of Fig. 2.
Fig. 3 B is schematic diagram of the pixel operation in drive mode of Fig. 2.
Fig. 4 is to show the pixel of Fig. 2 in display pattern and the time diagram under control mode touch mode driving.
Fig. 5 A is upper view skeleton diagram of the present invention using a pixel under top pixel electrode framework.
Fig. 5 B is the upper view skeleton diagram of a pixel at the top of use of the present invention under common electrode framework.
Fig. 6 is the schematic diagram that touch-control sensing is carried out using third scanning mode of the invention.
Fig. 7 is the schematic diagram of the scanning mode selection method of the control mode touch mode of touch-control display panel of the invention.
Fig. 8 A~Fig. 8 C shows the timing diagram of control mode touch mode and display pattern of the invention.
Fig. 9 is the schematic diagram of gate driving circuit of the invention.
Figure 10 is the basic circuit diagram of grid line driving unit of the invention.
Figure 11 is the summary architecture diagram for showing data line subregion output circuit of the invention.
[symbol description]
10,20~embedded touch control display panel；
11,21~display area；
22~data drive circuit；
23~gate driving circuit；
24-1~24-m, 24~data line；
25-1~25-n, 25~grid line；
26-1~26-n, 26~secondary grid line；
27-1~27-n, 27~common electrode line；
31~pixel electrode；
32~common electrode；
CLC~liquid crystal display element；
Cst~storage capacitance；
CK~clock signal input terminal；
D~trigger signal input terminal；
GOP1, GOP2~grid line drive block；
IC pin1, IC pin2, IC pin3~pin；
L1~signal wire；
L2, L3~line trigger signal；
M1, M2, M3~control signal wire；
O~output end；
P11~Pnm~pixel；
T1~first switching element；
T2~second switch element；
U1, U2, Un, Un+1, Un+2, U2n~grid line driving unit；
Vcom~share voltage；
VT~touch drive signal；
VR~touch sense signals；
W1, W2 ..., Wk, Wk+1 ..., Wm~plain conductor.
Specific embodiment
Below according to Detailed description of the invention touch-control display panel of the invention and its display methods.In different attached drawing and corresponding Identical symbol is indicated in explanation to be indicated identical element and omits repeated explanation.
Fig. 1 is the schematic top view for indicating the embedded touch control display panel of the embodiment of the present invention.The embedded touch control of Fig. 1 is shown Panel 20 has display area (active area) the 21 and neighboring area (peripheral positioned at 21 outside of display area area)29.Data drive circuit 22 and gate driving circuit 23 are located on neighboring area 29, and data drive circuit 22 and grid drive Dynamic circuit 23 connects touch-control display control circuit 28.In this embodiment, gate driving circuit 23 is correspondingly arranged at display area 21 side, in other embodiments, gate driving circuit 23 can be correspondingly arranged at the opposite sides of display area 21.It is real herein It applies in example, touch-control display control circuit 28 is located at except neighboring area 29, in other embodiments, touch-control display control circuit 28 On neighboring area 29.In other embodiments, touch-control display control circuit 28 can respectively with data drive circuit 22 or grid Pole driving circuit 23 is integrated into single element or three is integrated into single element.Display panel 20 is with more rectangular multiple Pixel P11~Pnm (m, n are integer) be configured at display area 21.Display panel 20 includes multiple data line 24-1~24-m Connect pixel column (column), multiple grid line 25-1~25-n connection pixel columns (row), multiple grid line 26-1~26-n company Connect pixel column (row), multiple common electrode line 27-1~27-n connection pixel columns (row).Data drive circuit 22 can driving number According to line 24-1~24-m, gate driving circuit 23 can drive grid line 25-1~25-n and secondary grid line 26-1~26-n, share Electrode wires 27-1~27-n is connected to touch-control display control circuit 28 to receive shared voltage signal.One pixel of display is logical Can often have the sub-pixel for showing three colors respectively.Institute's " pixel " on the books substantially shows single in this specification " sub-pixel " of kind color.
Fig. 2 is the synoptic circuit diagram of a pixel in the embedded touch control display panel of the embodiment of the present invention.In the present invention In a pixel (being strictly speaking sub-pixel) include pixel electrode 31, first switching element T1, liquid crystal display element CLC, storage Capacitor Cst, common electrode 32, second switch element T2.First switching element T1 and second switch element T2 is, for example, film crystalline substance Body pipe.In Fig. 2, liquid crystal display element CLCIt is indicated, is deposited with the capacitor that is connected between pixel electrode 31 and common electrode 32 Storage holds Cst and is also connected to the capacitor between pixel electrode 31 and common electrode 32.First switching element T1 is configured in pixel Between electrode 31 and data line 24, control terminal (grid) is connected to grid line 25.Second switch element T2 configuration is sharing For electrode 32 together between electrode wires 27, control terminal is connected to time grid line 26.
Illustrate in embedded touch control display panel of the invention below, a pixel operation is in display pattern and control mode touch mode Driving method.Fig. 3 A is schematic diagram of the pixel operation in display pattern of Fig. 2.Fig. 3 B is the pixel operation of Fig. 2 in control mode touch mode Schematic diagram.When operation is in display pattern, as shown in Figure 3A, second switch element T2 opens (ON), and common electrode 32 is together It is connected with electrode wires 27, common electrode line 27 provides a fixed shared voltage (Vcom) to common electrode 32, first opens at this time It closes element T1 and opens (ON), pixel electrode 31 and data line 24 are connected, and data line 24 send display data signal Vdata to pixel Electrode 31, to update display picture.When operation is in control mode touch mode, as shown in Figure 3B, second switch element T2 closes (OFF), Common electrode 32 can not be connected between electrode wires 27 together, and common electrode 32 is in (flaoting) current potential that floats, and at this time the One switch element T1 opens (ON), and pixel electrode 31 and data line 24 are connected, and touch drive signal VT is sent to by data line 24 Pixel electrode 31, and from the sensing result of the reception of pixel electrode 31 touch sense signals VR, whether with judgement touching.
In above-mentioned driving method, each pixel electrode 31 can sending and receiving touch drive signal VT and touch sense signals VR, therefore pixel electrode 31 is equivalent to the touch-control sensing electrode an of minimum unit under control mode touch mode, since sensing area is remote Come than known technology with an electrode block small as touch-control sensing electrode, therefore finer touch-control sensing can be done.In addition, working as When display data signal Vdata inputs pixel electrode 31 by data line 24, common electrode 32 maintains the shared voltage of definite value Vcom.At this point, the pressure difference between pixel electrode 31 and common electrode 32 can control liquid crystal display element CLCShow specific grayscale. When being converted to control mode touch mode, since the current potential of common electrode 32 is quick condition (floating), that is, non-definite value, so Even if touch drive signal VT and touch sense signals VR inputs pixel electrode 31 by data line 24 and changes pixel electrode The gray scale voltage of 31 script, but the pressure difference between pixel electrode 31 and common electrode 32 can still maintain not because of coupling effect Become, therefore liquid crystal display element CLCThe grayscale shown originally can be still maintained, can't influence to show picture because of touch-control.
Fig. 4 is to show the pixel of Fig. 2 in display pattern and the time diagram under control mode touch mode driving.It is assumed herein that first To open (ON) when the control terminal of switch element T1 and second switch element T2 are in high potential, closed when being in low potential (OFF) (such as N-type transistor) is explained.However, the type according to switch element, switch element can also be under low potential It opens, closes (such as P-type transistor) under high potential.As shown in figure 4, in display mode, the current potential of grid line 25 is in height Make to switch between current potential and low potential, in high potential, first switch T1 is opened grid line 25, by display data signal Vdata Current potential writing pixel electrode 31, when switching to low potential, first switch T1 is closed, and pixel electrode 31 maintains data-signal Vdata Current potential.Under display pattern, secondary grid line 26 maintains high potential, therefore second switch element T2 is kept it turning on, and makes common electrode 32 Maintain the common voltage Vcom current potential of definite value.
Under control mode touch mode, it is assumed that for the grid line of specific region while scanning mode (the i.e. third scanning side of full scan Formula, after specific features are specified in), grid line 25 can maintain high potential to open first switch T1, and data line 24 passes during this period Sending and receive multiple touch drive signal VT and touch sense signals VR, (amplitude is less than data-signal in figure and frequency is higher than data Multiple pulses of signal).During this period, secondary grid line 26 then maintains always low potential, and second switch element T2 is closed, made to share The current potential of electrode 32 is in the state floated.
There is interregnum (blanking period) between two display pattern periods, the control mode touch mode period can be located at sky In white period, and with the display pattern period have interval of the transition period as between, within the transition period, secondary grid line 26 by High potential switches to low potential, and second switch element T2, which is closed, makes the current potential of common electrode 32 be in the state floated, data line 24 do not operate during this period.
By above mode, when the present invention can be in quick condition using 32 current potential of common electrode, pass through data line 24 To 31 charge and discharge of pixel electrode, to sense position of touch.It should be noted that in the embodiment of Fig. 1 to Fig. 4, in each pixel It is configured with a second switch element T2 to control the voltage of common electrode 32.But second switch element T2 can also be integrated simultaneously Position other than pixel is set, such as the second switch element T2 of one-row pixels can be integrated into one, and be located at display area 21 Non- location of pixels or neighboring area 29.If in addition, transmitting a signal to the touch-control display control circuit 28 of common electrode line 27 Has the ability for providing that 27 current potential of common electrode line is quick condition, second switch element T2 and secondary grid line 26 can also save Slightly.
The above-mentioned embedded touch control display panel of the present invention can be used pixel electrode 31 and common electrode 32 and all be located at the same side Fringe field formula (fringe field switching, FFS) electrode framework of substrate, such as top pixel electric pole type (Top Pixel, pixel electrode is in upper neighbouring liquid crystal layer, and common electrode is in lower adjacent films transistor) framework or top common electrode The framework of formula (Top Com, common electrode is in upper neighbouring liquid crystal layer, and pixel electrode is in lower adjacent films transistor).In top picture Under the framework of plain electric pole type, 31 shielding of the top without common electrode 32 of pixel electrode can directly sense touch object.It is total at top With under the framework of electric pole type, though the shared electrode 32 of pixel electrode is covered, however common electrode 32 is to float in control mode touch mode Current potential, therefore common electrode 32 will receive the coupling effect of pixel electrode 31 and be influenced, and make the electricity of its voltage Yu pixel electrode 31 Pressure changes simultaneously together, therefore can equally incude touch object.Fig. 5 A and Fig. 5 B are respectively that the present invention uses top pixel electricity The upper view skeleton diagram of a pixel under pole formula framework and top common electrode formula framework.It can be seen that picture at the top of either Plain electrode framework or top common electrode formula framework, the two have common feature, that is, each pixel has one piece of independence Common electrode 32, allow the common electrode 32 of each pixel to maintain quick condition independent of each other, therefore can be by one Pixel is as the smallest touch-control sensing unit.In addition, since pixel electrode 31 and common electrode 32 are on vertical and horizontal direction The ratio Chong Die with data line 24, grid line 25, secondary grid line 26, common electrode line 27 reduces, therefore can reduce touch-control sense Survey the coupling effect between electrode and All other routes.
Then, illustrate scanning mode of the embedded touch control display panel of the embodiment of the present invention under control mode touch mode.The present invention It can provide the scanning mode of three kinds of control mode touch modes: the first scanning mode, the second scanning mode, third scanning mode.
First scanning mode is that grid line 25 is scanned one by one from the top of panel to lower section and (scanned from grid line 25-1 to grid Polar curve 25-n).Meanwhile in every scanned period of grid line 25, touch drive signal VT is by data line drive circuit 22 It is sent to pixel electrode 31 via data line 24, and receives touch sense signals VR via data line 24 by pixel electrode 31, with Complete the movement of scanning touch point.All touch points in display area 21 can be scanned by this scanning mode according to timing. And each pixel is a touch-control sensing unit, therefore can carry out fine finger print identification function, such as multiple spot finger scan or Palmmprint scanning etc..However, this scanning mode needs longer sweep time, so being relatively suitably applied the booting of touch-control product During picture, or display particular image；During this period, when panel driving shows that the time is all converted to touch-control scanning Between.
Second scanning mode is that display area 21 is divided into multiple regions (example on such as column direction (column) in advance Such as it is divided into 20th~30 area), it can be the number of one or more that there is no restriction for the number of the grid line 25 in each area, then right Grid line 25 in selected region carries out touch-control scanning one by one in proper order.Since touch-control sensing only carries out in selected region, Therefore sweep time is short compared with the first scanning mode, and remains as in selected region and scan one by one, therefore in selected region It inside can equally carry out finger print identification function.And above-mentioned selected region can be determined in advance, when entering finger print identification function, Make to show region of the specific square to inform user fingerprints identification in picture.Or be, first (such as with rough scanning mode The third scanning mode afterwards) position where touch point is found out, then by the region where the position as selected region To be scanned one by one.
Third scanning mode is equally that display area 21 is divided into multiple areas on such as column direction (column) in advance Domain (such as being divided into 20th~30 area), but when a region carries out touch-control sensing, whole grid lines 25 in the region are same Time is scanned.Specifically, it is assumed that there are 100 grid lines 25 in a region, when this region carries out touch-control sensing, This hundred grid lines 25 can open first switching element T1 all in region simultaneously to carry out touch-control sensing.Fig. 7 be using Third scanning mode of the invention carries out the schematic diagram of touch-control sensing.As shown in fig. 7, F indicates the range of finger touch, it is assumed that aobvious Show from top to bottom be divided into region 21 sub-region A1, A2, A3 ..., each sub-region A1, A2, A3 ... from top to bottom sequentially into Row touch-control sensing.When A3 carries out touch-control sensing sensing in region, the presence of touch control object will be sensed.At this time due to sub-region A3 Interior grid line 25 is to be all turned on, therefore an effective touch-control sensing unit can divide as shown in the enlarged drawing of the right Fig. 6 It is not range Sj, Sj+1, Sj+2 that dotted line is framed.Touch-control sensing unit Sj is that data line 24-j is connected in the A3 of sub-region Whole pixels, similarly, touch-control sensing unit Sj+1 are whole pixels that data line 24-j+1 is connected in the A3 of sub-region, touching Control sensing unit Sj+2 is whole pixels that data line 24-j+2 is connected in the A3 of sub-region.In this scanning mode, due to The area of effective touch-control sensing unit is larger, therefore the resolution of touch-control sensing is lower, is suitably applied general touch-control function Energy.In addition, the touch-control sensing between each region and region, in addition to sequentially (by, to below the panel, all areas are equal above panel Open primary) it carries out outside touch-control sensing, each region (opening all areas at random primary) can also be opened at random, or can Only to carry out touch-control sensing to specific region (scanning panel fixed area).
In above-mentioned third scanning mode, multiple grid lines 25 and multiple data lines 24 can be opened, according to timing to transmit touching It controls driving signal VT and receives touch sense signals VR, to reach the function of multi-point touch and multi-point scanning.
It briefly describes below, how the present invention selects above-mentioned three kinds of scanning modes.Fig. 7 is touch-control display panel of the invention Control mode touch mode scanning mode selection method schematic diagram.As shown in fig. 7, in step S1, touch-control display panel enters touch-control Mode may be selected under control mode touch mode to execute finger print identification function or common touch function.When system executes finger print identification function (step Rapid S2) when, the mode (step S3) of P-SCAN grid line 25 may be selected.Then, it is confirmed whether only to carry out in specific region Identification of fingerprint (step S4), if so, carrying out P-SCAN (step S5) in specific region using the second scanning mode.If It is no, then the first scanning mode is used, P-SCAN (step S6) is carried out to entire display area.On the other hand, when system executes When common touch function (step S7), because not needing finely to sense, display area can be divided into multiple regions to be touched Control sensing (step S8), and third scanning mode is used, whole grid when each region carries out touch-control sensing, in the region Polar curve scans (step S9) simultaneously.
By three kinds of above-mentioned scanning modes are properly selected, the present invention not only has only the general touch-control for needing coarse scan Function, the more standby finger print identification function for needing fine scanning.
Although Fig. 4 it is stated that control mode touch mode be it is lower during display pattern stops carry out, and it is undeclared more specific Sequential relationship.It will be described below the sequential relationship of control mode touch mode and display pattern.Fig. 8 shows control mode touch mode and display of the invention The timing diagram of mode.According to time needed for above-mentioned three kinds of scanning modes and the difference of characteristic, control mode touch mode and display pattern can Just like three kinds of collocation shown in Fig. 8 A, 8B, 8C.It is assumed herein that display is driven with 60Hz, then during a frame (1frame) It is equivalent to 16.6ms.High level indicates that the mode starts (on) in Fig. 8 A to Fig. 8 C, and low level indicates that the mode closes (off). Firstly, as shown in Figure 8 A, control mode touch mode is all executed during some frame, without entering display pattern, at this time control mode touch mode Above-mentioned first scanning mode can be used.Since above-mentioned first scanning mode will scan one by one entire panel, spend The more time.In Fig. 8 A, just select to execute control mode touch mode during an entire frame.In other embodiments, this is scanned It can be the frame time of one or more the time required to mode.Then, as shown in Figure 8 B, control mode touch mode can be during each frame Interior interregnum carries out.Due to that can have the interregnum for not driving display area between each frame, control mode touch mode can To be carried out during this section.Above-mentioned second scanning mode or third scanning mode can be used in control mode touch mode at this time, to one or more A above region carries out the scanning one by one or synchronous scanning in the region.In addition, as shown in Figure 8 C, display pattern and control mode touch mode All subregion executes.When display area be for example divided into down shown in Fig. 7 by top sub-region A1, A2, A3 ... when, show mould Formula starting is scanned sub-region A1, and control mode touch mode starts after the completion, is scanned to sub-region A1.Then, display pattern Restart and region A2 be scanned, control mode touch mode starts after the completion, is scanned to sub-region A2, and so on, until whole Until the driving an of display pattern and the driving of control mode touch mode are all completed in a display area.Control mode touch mode can be used above-mentioned at this time Second scanning mode or third scanning mode carry out the scanning one by one in the region to region more than one or more or simultaneously sweep It retouches.
Then, illustrate the specific embodiment of the grid circuit to execute above-mentioned three kinds of touch-control scanning modes.Fig. 9 is this The schematic diagram of the gate driving circuit of invention.Figure 11 is the basic circuit diagram of gate driving circuit 23 of the invention.Such as Fig. 9 It is shown, gate driving circuit 23 have multiple grid lines driving block GOP1, GOP2 ... (Fig. 9 only shows two for convenience of explanation A grid line drives block GOP1, GOP2).Each grid line drives block, such as: grid line drives block GOP1 to have example As k cascade arrangement grid line driving unit U1, U2 ..., Uk, for drive such as k grid line 25-1,25-2 ..., 25-k.Each grid line driving unit can have basic circuit frame as shown in Figure 10 by taking grid line driving unit U1 as an example Structure at least has trigger signal input terminal D, clock signal input terminal CK and output end O.Trigger signal input terminal D can be inputted The signal that the output end O of the grid line driving unit of level-one is exported, however, the triggering of the grid line driving unit U1 of the first order Signal input part D can input trigger signal STV via line trigger signal L2.Clock signal input terminal CK can input clock signal. Output end O can export scanning signal and give grid line 25-1.
In the embodiment of the present invention, three kinds of switches SW1, SW2, SW3 are provided in gate driving circuit 23, by This reaches three kinds of touch-control scanning modes above-mentioned.Switch SW1 is arranged between adjacent grid line driving block, with grid line For driving block GOP1 and GOP2, one end of switch SW1 is connected to the grid of afterbody in grid line driving block GOP1 The output end O of line driving unit Uk, the other end connect the grid line driving unit of the first order in a grid line driving block GOP2 The trigger signal input terminal D of Uk+1.The purpose of switch SW1 is to control grid line driving block GOP2, if be connected at grid Driving, or both is to drive independently of each other after line driving block GOP1.Switch SW2 is connected to the trigger signal of an outside Between line and the trigger signal input terminal of each grid line driving block first order grid line driving unit.By taking Fig. 9 as an example, switch The triggering of the grid line driving unit Uk+1 of line trigger signal L3 and the grid line driving block GOP2 first order outside SW2 connection Signal input part D.First grid line driving unit GOP1 does not need to do the switching of trigger signal, therefore can not have to setting and open Close SW2.The trigger signal input terminal D of the grid line driving unit U1 of the grid line driving unit GOP1 first order may be coupled directly to One line trigger signal L2.It should be noted that in order to drive each grid line driving block independently, each grid line Driving block can be respectively coupled to different line trigger signals.In addition, having switch SW3 company in each grid line driving unit Signalling input terminal D and clock signal input terminal CK is contacted, and all switch SW3 can unify to be controlled by a signal line L1 System.Switch SW3 is used to control in grid line driving block, and all grid line driving units are to export scanning signal or same one by one Step output scanning signal.
When control mode touch mode will be scanned one by one using the first scanning mode in order to do the grid line of entire display area.Meeting Switch SW1 is opened, each grid line driving element block will connect after the grid line driving Reginal-block scanning operation of previous stage It is scanned, switch SW2 and SW3 is closed at this time.Three switch operation so that grid line driving block in grid line be by Item scanning.Therefore, grid line will from display area first scanning to last one.
When control mode touch mode will be scanned one by one using the second scanning mode in order to carry out subregion, switch SW1 closing makes each grid Polar curve driving block is mutually independent.Switch SW2 is opened, and makes the triggering letter of each grid line driving block reception independently Number.Switch SW3 is closed, and scans the grid line in each grid line driving block one by one.
When control mode touch mode will be scanned one by one using the second scanning mode in order to carry out subregion, switch SW1 closing makes each grid Polar curve driving block is mutually independent.Switch SW2 is opened, and makes each grid line driving independent trigger signal of block reception. Switch SW3 is closed, and scans the grid line in each grid line driving block one by one.Since each grid line drives block institute Received trigger signal can control respectively, therefore can choose the grid line only driven in specific grid line driving block.
When control mode touch mode will use third scanning mode, in order to carry out the full grid line of subregion while scan, switch SW1 is closed Each grid line driving block is set to be mutually independent.Switch SW2 is opened, and makes each grid line driving independent touching of block reception It signals.Switch SW3 is also opened, and is made whole grid lines in each grid line driving block while being exported scanning signal.Equally Ground can choose and only drive specifically since the received trigger signal of each grid line driving block institute can control respectively Grid line drives the grid line in block.
It is brilliant for the film of active layers by amorphous silicon or polysilicon or oxide semiconductor is arranged in above-mentioned switch In the gate driving circuit of body pipe, three kind scanning modes of the present invention under control mode touch mode can be certainly realized.
Finally, illustrating that data line output touching signals of the invention can also be done simultaneously or subregion exports.Figure 11 is to show this The summary architecture diagram of the data line subregion output circuit of invention.The circuit of Figure 11 can be formed on panel, be located at such as the application Position between the display area 21 and data drive circuit 22 of Fig. 1.As shown in figure 11, multiple adjacent data lines can be divided into One group, such as each group have 3 adjacent data lines.There are three switches, one end of each switch to be connected to for tool in each group One data line, the common pin for being connected to data drive circuit of the other end.And the control terminal of these three switches can divide It is not connected to three control signal wires.For the 1st group, shares three data line 24-1,24-2,24-3 and three are connected to Switch SW4, SW5, SW6 of this three datas line.The other end of these three switches SW4, SW5, SW6 are common to be connected to data-driven One pin IC pin1 of circuit (such as data drive circuit 22 of Fig. 1), and the control of these three switches SW4, SW5, SW6 Terminal is connected respectively to three control signal wires M1, M2, M3.Similarly, the 2nd group of configuration is identical as the 1st group, however three are opened Close common another pin IC pin2 for being connected to data drive circuit of the other end of SW4, SW5, SW6.
By above-mentioned framework, three kinds of modes can mainly be taken to carry out the touch drive signal VT of output data line.The first It is control signal wire M1, M2, M3 while opens whole switches, and data drive circuit pin Pin1, IC Pin 2, IC Pin3 sends out touch drive signal VT simultaneously；And then by data line, data drive circuit via pin Pin1, IC Pin 2, IC Pin3 receives touch sense signals VR.
Second is that at least one of control signal wire M1, M2, M3 open switch, and remaining control signal wire closing is opened It closes, and each pin IC Pin1, IC Pin 2, IC Pin3 send out touch drive signal VT simultaneously.Whereby, so that each group Specific data line exports touch drive signal VT.For example, control signal wire M1 opens the switch SW4 of each group, signal is controlled Line M2 and M3 closes switch SW5, SW6 of each group, and each pin IC Pin1, IC Pin 2, IC Pin3 send out touch-control simultaneously Driving signal VT.So, can allow data line 24-1,24-4,24-7 and meanwhile send out touching driving survey signal VT；And then by Data line, via Pin1, IC Pin 2, IC Pin3, data drive circuit receives touch sense signals VR and is back to.
The third is that control signal wire M1, M2, M3 simultaneously open whole switches, by the pin IC of data drive circuit Pin1, IC Pin 2, IC Pin3 determine when to go out export the data line which touch-control driving data VT organize to；And then By data line, via selected pin Pin, data drive circuit receives touch sense signals VR.
According to above-mentioned each embodiment, the invention proposes the drivings of In-cell touch display panel and its control mode touch mode Method can reduce the coupled capacitor between touch-control sensing electrode and All other routes, and can meet touch function simultaneously and fingerprint is distinguished Know function, and be not required to additional cabling, to transmit common electrode, touch drive signal and touch sense signals.
Though the present invention illustrates that but it is not limited to this with above-described embodiment.Furthermore, in those skilled in the art Do not depart under idea of the invention and equivalents, claims must widely explain with include the embodiment of the present invention and Other deformations.

Claims (14)

1. a kind of touch-control display panel, comprising:
Multiple pixels are located at display area, these each pixels include:
Pixel electrode；
First switching element is connected between the pixel electrode and a data line；And
Common electrode corresponds to the pixel electrode and is connected to common electrode line,
Wherein, in display pattern, which provides data-signal to the pixel electrode by the first switching element, this is total The first current potential is provided to the common electrode with electrode wires, which is definite value；
Wherein, in control mode touch mode, which transmits touch drive signal to the pixel electrode by the first switching element, And touch sense signals are received by the pixel electrode, which has the second current potential, which is to float,
The touch-control display panel further includes multiple first grid polar curves, is separately connected these first switches member of these corresponding pixels Part,
Wherein, which includes multiple region, these each sub-regions include these multiple first grid polar curves,
In control mode touch mode, these sub-regions can drive independently of one another,
The touch-control display panel further include:
Multiple grid lines drive block, and each these grid lines driving block includes multiple grid line driving units of cascade arrangement, These grid line driving units are to drive these first grid polar curves；
Multiple line trigger signals correspond to these grid lines and drive block；And
Common signal line,
Wherein, these each grid line driving units include clock signal input terminal, trigger signal input terminal and output end,
The clock signal input terminal of the first order of these grid line driving units is opened by third in these grid lines driving area Element is closed, the output end of the afterbody of these grid line driving units in these grid lines driving area is connected to,
These grid lines drive the clock signal input terminal of the first order of these grid line driving units in area, open by the 4th It closes element and is connected to one of these corresponding line trigger signals,
It further includes the 5th switch element that these grid lines, which drive these each grid line driving units in area, is connected to clock letter Number between input terminal and the trigger signal input terminal, and to be connected to this total for these control terminals of all these 5th switch elements Same signal wire.
2. touch-control display panel as described in claim 1, wherein the pixel further include:
Second switch element is connected between the common electrode and the common electrode line,
Wherein, in display pattern, which maintains to open, and in control mode touch mode, which is maintained It closes.
3. touch-control display panel as described in claim 1 further includes that a second switch element is located at a neighboring area, the periphery Region is located on the outside of the display area, these common electrode lines of these pixels of the second switch element connection portion.
4. touch-control display panel as described in claim 1, wherein
In control mode touch mode, these each sub-regions drive independently of one another, these first grid polar curves in these sub-regions follow Sequence scanning.
5. touch-control display panel as described in claim 1, wherein
In control mode touch mode, these each sub-regions drive independently of one another, these first grid polar curves in these sub-regions are same Step scanning.
6. touch-control display panel as described in claim 1, wherein these sub-regions sequentially carry out display pattern and touch-control mould Formula.
7. touch-control display panel as described in claim 1, wherein in control mode touch mode, positioned at the display area these One grid line P-SCAN, the third switch element are opened, and the 4th switch element and the 5th switch element are closed.
8. touch-control display panel as described in claim 1, wherein in control mode touch mode, these each sub-regions are driven independently of one another Dynamic, these first grid polar curve P-SCANs in these sub-regions, the 4th switch element is opened, the third switch element And the 5th switch element close.
9. touch-control display panel as described in claim 1, wherein in control mode touch mode, these each sub-regions are driven independently of one another Dynamic, these first grid line lockings scanning in these sub-regions, the third switch element is closed, the 4th switch element And the 5th switch element open.
10. touch-control display panel as described in claim 1, further includes:
Multiple 6th switch elements connect one of these corresponding data lines；
Multiple control signal line connects these control terminals of these the 6th switch elements；And
Touching signals output end connects these the 6th switch elements.
11. touch-control display panel as claimed in claim 10, wherein in control mode touch mode, these control signal wires are synchronized out These the 6th switch elements are opened, which exports the touch sense signals.
12. touch-control display panel as claimed in claim 10, wherein in control mode touch mode, these control signal wires are opened in proper order These the 6th switch elements are opened, which exports the touch sense signals.
13. a kind of driving method of control mode touch mode, to drive touch-control display panel as claimed in claim 5, comprising:
Selectively start touch function or finger print identification function；
When starting the touch function, these sub-regions drive independently of one another, these first grids in these sub-regions Line locking scanning；And
When starting the finger print identification function, these first grid polar curve P-SCANs positioned at the display area, or it is each these Sub-region drives independently of one another, these first grid polar curve P-SCANs in these sub-regions.
14. the driving method of control mode touch mode as claimed in claim 13, further includes:
Judge whether the finger print identification function executes in specific region, when the finger print identification function is held in the specific region Row, these each sub-regions drive independently of one another, these first grid polar curve P-SCANs in these sub-regions, when the fingerprint Discriminating function is all executed in the display area, these first grid polar curve P-SCANs positioned at the display area.
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