CN206961095U - Touch display module and touch display driver thereof - Google Patents
Touch display module and touch display driver thereof Download PDFInfo
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- CN206961095U CN206961095U CN201720531007.5U CN201720531007U CN206961095U CN 206961095 U CN206961095 U CN 206961095U CN 201720531007 U CN201720531007 U CN 201720531007U CN 206961095 U CN206961095 U CN 206961095U
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- 230000003071 parasitic effect Effects 0.000 claims abstract description 43
- 230000000694 effects Effects 0.000 claims abstract description 4
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- 238000001514 detection method Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 11
- 230000005611 electricity Effects 0.000 description 9
- 239000010409 thin film Substances 0.000 description 7
- 238000007667 floating Methods 0.000 description 6
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- 101100325974 Arabidopsis thaliana BHLH95 gene Proteins 0.000 description 4
- 101100068402 Arabidopsis thaliana GL3 gene Proteins 0.000 description 4
- 101100329534 Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809) csg1 gene Proteins 0.000 description 4
- 101100385368 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CSG2 gene Proteins 0.000 description 4
- 101100422777 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SUR1 gene Proteins 0.000 description 4
- 101100483039 Arabidopsis thaliana TT8 gene Proteins 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 3
- 230000008313 sensitization Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
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- 230000024241 parasitism Effects 0.000 description 2
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Abstract
The utility model provides a touch-control display module and touch-control display driver thereof. The touch display driver includes first to third driving circuits. The first to third driving circuits respectively receive the first to third control signal sets and respectively generate first to third driving signals to drive a gate driving line, a source driving line and a sensing electrode driving line of the embedded touch display panel in a touch sensing stage. At least one of the first driving signal and the second driving signal is a high impedance signal to reduce the parasitic capacitance effect in the embedded touch display panel. The utility model discloses a touch-control display driver can provide high impedance's signal to embedded touch-control display panel's grid drive line and source drive line at least one of them in the touch-control response stage to reduce the influence of parasitic capacitance in the embedded touch-control display panel to touching detection efficiency.
Description
Technical field
A kind of touch-control Display Technique is the utility model is related to, more particularly to a kind of touch control display module and its touch-control display are driven
Dynamic device.
Background technology
In general, In-cell touch display panel (in-cell touch display panel) is by touch control component
It is integrated in the making of display panel, and touch controllable function and display function is realized by way of timesharing driving.Above-mentioned
Timesharing drives, and is in a picture frame cycle (frame period), timesharing carries out picture display action and moved with touch sensing
Make.Because In-cell touch display panel is typically to carry out touching detection using self-capacitance detection technology, along with because touching
Touch caused capacitance variations and be generally much less than the parasitism in In-cell touch display panel (for millimicro microfarad (fF) grade)
Electric capacity (for micromicrofarad (pF) grade), therefore the parasitic capacitance in In-cell touch display panel can be to the efficiency of touching detection
And accuracy causes very big influence.
It is the part configuration diagram of existing In-cell touch display panel referring to Fig. 1 and Fig. 2, Fig. 1 below,
And Fig. 2 is a touch-control sensing electrode unit (namely common electrode unit) and its week in Fig. 1 In-cell touch display panel
Schematic equivalent circuit between the circuit on side.As shown in figure 1, In-cell touch display panel 100 may include that a plurality of grid drives
Moving-wire GL, a plurality of source drive line SL, multiple thin film transistor (TFT)s 102, multiple pixel cells 104, touch-control sensing electrod-array SPD
And a plurality of sensing electrode drives line SX.The grid of raster data model line GL coupling thin film transistor (TFT)s 102 is to control thin film transistor (TFT)
102 keying.Source drive line SL couples the source electrode of thin film transistor (TFT) 102, in picture the stage can be shown to thin film transistor (TFT) 102
Source electrode provide pixel voltage.One end of the drain electrode coupling pixel cell 104 of thin film transistor (TFT) 102.Sensing electrode drives line SX
The other end of pixel cell 104 is coupled by touch-control sensing electrod-array SPD.Touch-control sensing electrod-array SPD can have with battle array
Multiple touch-control sensing electrode units 106,106 ' of row pattern arrangement are (such as shown in Fig. 2, exemplified by this display two, but not
It is limited to this).Touch-control sensing electrod-array SPD shows the stage to be loaded into common electric voltage in picture, and at the touch-control sensing stage
To as the detecting electrode for realizing self-capacitance detection.
As shown in Fig. 2 there is equivalent parasitic capacitance between touch-control sensing electrode unit 106 and a plurality of raster data model line GL
Cgl, there is equivalent parasitic capacitance Csl, touch-control sensing electricity between touch-control sensing electrode unit 106 and a plurality of source drive line SL
There is equivalent parasitic capacitance Csx, and adjacent touch-control sensing electrode between pole unit 106 and a plurality of sensing electrode drives line SX
Also there is equivalent parasitic capacitance Csr between unit 106 and 106 '.In the touch-control sensing stage, in order to reduce parasitic capacitance Cgl,
Csl, Csx, Csr detect the influence of efficiency to touching, typically can provide same phase, identical frequency by drive circuit (not shown)
And the pulse signal of same-amplitude is to raster data model line GL, source drive line SL and sensing electrode drives line SX, if Fig. 3 is in touching
Shown in drive signal VGL, VSL, the VSX for controlling phase of sensitization, its amplitude is Δ V.In theory, each parasitic capacitance Cgl, Csl, Csx,
The potential change at Csr both ends will be identical, therefore the influence that parasitic capacitance Cgl, Csl, Csx, Csr detect efficiency to touching can
It is ignored.However, the situation that real face is likely encountered is, drive circuit is to raster data model line GL, source drive line SL and sense
It is different to survey electrode drive line SX driving force, and is driven respectively by raster data model line GL, source drive line SL and sensing electrode
The resistance of equivalent parasitic capacitances and equivalent line that moving-wire SX is seen also differ (namely raster data model line GL, source drive line SL with
And sensing electrode drives line SX time delay constant and differ).Therefore, even if drive circuit output same phase, identical
For the pulse signal of frequency and same-amplitude to raster data model line GL, source drive line SL and sensing electrode drives line SX, this is a little
The current potential that pulse signal reaches each parasitic capacitance Cgl, Csl, Csx both ends can be different, therefore each parasitic capacitance Cgl, Csl, Csx
There is potential difference in the signal at both ends, cause parasitic capacitance Cgl, Csl to detect the influence of efficiency to touching and still have.
Utility model content
In view of this, the utility model provides a kind of touch control display module and its touch-control display driver.Touch-control display is driven
Dynamic device can be in the touch-control sensing stage, there is provided the raster data model line and source electrode of the signal of high impedance to In-cell touch display panel drive
Moving-wire at least one, with reduce the parasitic capacitance in In-cell touch display panel to touching detect efficiency influence.
Touch-control display driver of the present utility model includes the first drive circuit, the second drive circuit and the 3rd driving electricity
Road.First drive circuit produces multiple first driving letters in the touch-control sensing stage according to this to receive the first control signal group
Number, to drive a plurality of raster data model line of In-cell touch display panel.Second drive circuit is receiving the second control signal
Group, and multiple second drive signals are produced in the touch-control sensing stage according to this, to drive a plurality of source of In-cell touch display panel
Pole drives line.3rd drive circuit produces the multiple 3rd in the touch-control sensing stage according to this to receive the 3rd control signal group
Drive signal, to drive a plurality of sensing electrode drives line of In-cell touch display panel.This little first drive signal and this
At least one is multiple high impedance signals to a little second drive signals, to reduce the parasitism electricity in In-cell touch display panel
Hold effect.
In an embodiment of the present utility model, this little first drive signal is high impedance signal, and this little second driving
Signal and multiple pulse signals that this little 3rd drive signal is identical frequency, same phase and same-amplitude.
In an embodiment of the present utility model, this little second drive signal is high impedance signal, and this little first driving
Signal and multiple pulse signals that this little 3rd drive signal is identical frequency, same phase and same-amplitude.
In an embodiment of the present utility model, this little first drive signal and this little second drive signal are high impedance
Signal, and this little 3rd drive signal is multiple pulse signals.
In an embodiment of the present utility model, above-mentioned touch-control display driver also includes sequential control circuit.Sequential
Control circuit couples the first drive circuit, the second drive circuit and the 3rd drive circuit, and to be produced in the touch-control sensing stage
Raw first control signal group, the second control signal group and the 3rd control signal group.
In an embodiment of the present utility model, the first control signal group includes the first enable signal, the second enable signal
And the 3rd enable signal.First drive circuit includes gate driving circuit.Gate driving circuit couple sequential control circuit with
The first enable signal, the second enable signal and the 3rd enable signal are received, and receives first voltage and second voltage, wherein
First voltage is more than second voltage.It is first voltage that gate driving circuit, which reacts on the first enable signal and exports a voltage level,
The first drive signal, react on the second enable signal and export the voltage level be second voltage the first drive signal,
And react on the first drive signal of the 3rd enable signal and output high impedance.
In an embodiment of the present utility model, the second control signal group includes the first enable signal, the second enable signal
And the 3rd enable signal.Second drive circuit includes source electrode drive circuit.Source electrode drive circuit couple sequential control circuit with
The first enable signal, the second enable signal and the 3rd enable signal are received, and receives tertiary voltage and the 4th voltage, wherein
Tertiary voltage is more than the 4th voltage.It is tertiary voltage that source electrode drive circuit, which reacts on the first enable signal and exports a voltage level,
The second drive signal, react on the second enable signal and export the voltage level be the 4th voltage the second drive signal,
And react on the second drive signal of the 3rd enable signal and output high impedance.
In an embodiment of the present utility model, the 3rd control signal group includes the first enable signal and the second enable is believed
Number.3rd drive circuit includes sensing electrode drive circuit.Sensing electrode drive circuit couples sequential control circuit to receive the
One enable signal and the second enable signal, and the 5th voltage and the 6th voltage are received, wherein the 5th voltage is more than the 6th electricity
Pressure.Sensing electrode drive circuit reacts on the first enable signal and exports the 3rd driving letter that a voltage level is the 5th voltage
Number, and react on the second enable signal and export the 3rd drive signal that the voltage level is the 6th voltage.
Touch control display module of the present utility model includes above-mentioned touch-control display driver and embedded touch display surface
Plate, wherein In-cell touch display panel couple the touch-control display driver.
Based on above-mentioned, the touch control display module and its touch-control display driver that the utility model embodiment is proposed can touched
Control phase of sensitization, control In-cell touch display panel raster data model line and source drive line at least one be high impedance
State (i.e. floating), the influence of efficiency is detected to reduce the parasitic capacitance in In-cell touch display panel to touching.
For features described above and advantage of the present utility model can be become apparent, special embodiment below, and coordinate accompanying drawing
It is described in detail below.
Brief description of the drawings
Fig. 1 is the part configuration diagram of existing In-cell touch display panel；
Fig. 2 is between the circuit of the touch-control sensing electrode unit and its periphery in Fig. 1 In-cell touch display panel
Schematic equivalent circuit；
Fig. 3 shows the driver' s timing schematic diagram of Fig. 1 raster data model line, source drive line and sensing electrode drives line；
Fig. 4 is the block schematic diagram according to the touch control display module shown by the embodiment of the utility model one；
Fig. 5 A are according to the raster data model line shown by the embodiment of the utility model one, source drive line and sensing electrode
The drive signal schematic diagram of drives line；
Fig. 5 B are according to the raster data model line shown by another embodiment of the utility model, source drive line and sensing electricity
The drive signal schematic diagram of pole drives line；
Fig. 5 C are according to the raster data model line shown by the another embodiment of the utility model, source drive line and sensing electricity
The drive signal schematic diagram of pole drives line；
Fig. 6 A show the circuit box schematic diagram of the first drive circuit shown in Fig. 4；
Fig. 6 B show the circuit box schematic diagram of the second drive circuit shown in Fig. 4；
Fig. 6 C show the circuit box schematic diagram of the 3rd drive circuit shown in Fig. 4.
Description of reference numerals：
100、410：In-cell touch display panel
102：Thin film transistor (TFT)
104：Pixel cell
106、106’：Touch-control sensing electrode unit
400：Touch control display module
420：Touch-control display driver
421：First drive circuit
422：Second drive circuit
423：3rd drive circuit
429：Sequential control circuit
610：Gate driving circuit
620：Source electrode drive circuit
630：Sensing electrode drive circuit
CSG1：First control signal group
CSG2：Second control signal group
CSG3：3rd control signal group
Cgl、Csl、Csr、Csx：Parasitic capacitance
DGL：First drive signal
DSL：Second drive signal
DSX：3rd drive signal
EN11、EN21、EN31：First enable signal
EN12、EN22、EN32：Second enable signal
EN1Z、EN2Z：3rd enable signal
GL：Raster data model line
SL：Source drive line
SPD：Touch-control sensing electrod-array
SX：Sensing electrode drives line
V1：First voltage
V2：Second voltage
V3：Tertiary voltage
V4：4th voltage
V5：5th voltage
V6：6th voltage
VGL、VSL、VSX：Drive signal
ΔV：Amplitude
Embodiment
With detailed reference to one exemplary embodiment of the present utility model, illustrate the reality of the one exemplary embodiment in the accompanying drawings
Example.In addition, all possible parts, same or like portion is represented in drawings and the embodiments using element/component of identical label
Point.
Fig. 4 is refer to below, and Fig. 4 is the side according to the touch control display module 400 shown by the embodiment of the utility model one
Block schematic diagram.Touch control display module 400 may include In-cell touch display panel (in-cell touch display panel)
410 and touch-control display driver 420.Touch-control display driver 420 couples In-cell touch display panel 410.Touch-control is shown
Driver 420 can drive In-cell touch display panel 410 by way of timesharing driving, to be shown in picture in stage driving
Embedded touch-control display panel 410 carries out picture display action, and carries out In-cell touch display panel 410 in the touch-control sensing stage
On touching detection operation.In-cell touch display panel 410 can be for example the In-cell touch display panel 100 shown in Fig. 1
Or other known In-cell touch display panel, therefore will not be repeated here.In addition, in In-cell touch display panel 410
Touch-control sensing electrode unit and its perimeter circuit between equivalent parasitic capacitances then refer to Fig. 2, also repeat no more herein.
Touch-control display driver 420 may include sequential control circuit 429, the first drive circuit 421, the second drive circuit
422 and the 3rd drive circuit 423, but the utility model not limited to this.In another embodiment of the present utility model, sequential control
Circuit 429 processed also can unconformity in touch-control display driver 420, that is, sequential control circuit 429 can be that independent show in touch-control
Show another circuit outside driver 420.Sequential control circuit 429 couples the first drive circuit 421, the second drive circuit 422
And the 3rd drive circuit 423.Sequential control circuit 429 can produce the first control signal group CSG1, the in the touch-control sensing stage
Two control signal group CSG2 and the 3rd control signal group CSG3.First drive circuit 421 receives the first control signal group CSG1,
And multiple first drive signal DGL are produced in the touch-control sensing stage according to this, to drive a plurality of of In-cell touch display panel 410
Raster data model line GL.Second drive circuit 422 receives the second control signal group CSG2, and more in the generation of touch-control sensing stage according to this
Individual second drive signal DSL, to drive a plurality of source drive line SL of In-cell touch display panel 410.3rd drive circuit
423 receive the 3rd control signal group CSG3, and produce multiple 3rd drive signal DSX in the touch-control sensing stage according to this, with driving
The a plurality of sensing electrode drives line SX of In-cell touch display panel 410.Specifically, the first drive signal DGL and second
Drive signal DSL at least one can be high impedance signal (high impedance signal, or floating sign,
Floating signal), to reduce the parasitic capacitance effect in In-cell touch display panel 410.
Below referring to Fig. 2 and Fig. 5 A, Fig. 5 A are the raster data models shown by according to the embodiment of the utility model one
Line GL drive signal VGL, source drive line SL drive signal VSL and sensing electrode drives line SX drive signal VSX
Signal schematic representation.As shown in Figure 5A, in the touch-control sensing stage, drive signal VGL (i.e. the first drive signal DGL of Fig. 4)
For high impedance signal, and drive signal VSL and drive signal VSX (i.e. the second drive signal DSL of Fig. 4 and the 3rd drive signal
DSX it is) multiple pulse signals of identical frequency, same phase and same-amplitude.In other words, in the touch-control sensing stage,
Parasitic capacitance Cgl one end is high impedance signal (being also floating), therefore parasitic capacitance Cgl can be neglected；And parasitic capacitance
Csx both ends and parasitic capacitance Csr both ends are all the 3rd drive signal DSX, therefore parasitic capacitance Csx and parasitic capacitance Csr
Also can be neglected.Consequently, it is possible to each touch-control sensing electrode unit and its perimeter circuit of In-cell touch display panel 410 can be reduced
Between parasitic capacitance, so as to lifted touching detection efficiency.
Below referring to Fig. 2 and Fig. 5 B, Fig. 5 B are driven according to the grid shown by another embodiment of the utility model
Moving-wire GL drive signal VGL, source drive line SL drive signal VSL and sensing electrode drives line SX drive signal
VSX signal schematic representation.As shown in Figure 5 B, in the touch-control sensing stage, drive signal VSL (i.e. the second drive signals of Fig. 4
DSL) it is high impedance signal, and drive signal VGL and drive signal VSX (the i.e. drivings of the first drive signal DGL of Fig. 4 and the 3rd
Signal DSX) be identical frequency, same phase and same-amplitude multiple pulse signals.In other words, in the touch-control sensing stage
In, parasitic capacitance Csl one end is high impedance signal (being also floating), therefore parasitic capacitance Csl can be neglected；And parasitic electricity
It is all the 3rd drive signal DSX to hold Csx both ends and parasitic capacitance Csr both ends, therefore parasitic capacitance Csx and parasitic capacitance
Csr also can be neglected.Consequently, it is possible to each touch-control sensing electrode unit and its periphery of In-cell touch display panel 410 can be reduced
Parasitic capacitance between circuit, so as to lift touching detection efficiency.
Below referring to Fig. 2 and Fig. 5 C, Fig. 5 C are driven according to the grid shown by the another embodiment of the utility model
Moving-wire GL drive signal VGL, source drive line SL drive signal VSL and sensing electrode drives line SX drive signal
VSX signal schematic representation.As shown in Figure 5 C, in the touch-control sensing stage, drive signal VGL and drive signal VSL (i.e. Fig. 4
The first drive signal DGL and the second drive signal DSL) be high impedance signal, and drive signal VSX (i.e. Fig. 4 the 3rd driving
Signal DSX) it is multiple pulse signals.In other words, in the touch-control sensing stage, parasitic capacitance Cgl one end and parasitic electricity
The one end for holding Csl is high impedance signal (being also floating), therefore parasitic capacitance Cgl and parasitic capacitance Csl can be neglected；And post
Raw electric capacity Csx both ends and parasitic capacitance Csr both ends are all the 3rd drive signal DSX, therefore parasitic capacitance Csx and parasitic electricity
Hold Csr also to can be neglected.Consequently, it is possible to each touch-control sensing electrode unit and its week of In-cell touch display panel 410 can be reduced
Parasitic capacitance between the road of sideline, so as to lift touching detection efficiency.
In addition, in the picture display stage shown in Fig. 5 A~Fig. 5 C, sequential control circuit 429 can also control first respectively
Drive circuit 421, the second drive circuit 422 and the 3rd drive circuit 423 produce picture and show required drive signal.Due to
Picture shows that the running in stage is existing, and where emphasis not of the present utility model, therefore will not be repeated here.It is new in this practicality
In one embodiment of type, sequential control circuit 429 can use known time schedule controller or other time schedule controllers etc.
Hardware circuit is realized, therefore will not be repeated here.Below for the first drive circuit 421, the second drive circuit 422 and
The embodiment of three drive circuits 423 illustrates.
It please merge reference picture 4 below and Fig. 6 A, Fig. 6 A show that the circuit box of the first drive circuit 421 shown in Fig. 4 shows
It is intended to.First control signal group CSG1 includes the first enable signal EN11, the second enable signal EN12 and the 3rd enable signal
EN1Z.First drive circuit 421 includes gate driving circuit 610.Gate driving circuit 610 couple sequential control circuit 429 with
Receive the first enable signal EN11, the second enable signal EN12 and the 3rd enable signal EN1Z, and receive first voltage V1 with
And second voltage V2, wherein first voltage V1 are more than second voltage V2.Gate driving circuit 610 can react on the first enable signal
EN11 and export first voltage V1 so that as the first drive signal DGL, gate driving circuit 610 can react on the second enable signal
EN12 and export second voltage V2 so that as the first drive signal DGL (such as shown in Fig. 5 B), wherein first voltage V1 is first
Drive signal DGL high voltage level, and second voltage V2 is the first drive signal DGL low-voltage level.In addition, grid drives
Dynamic circuit 610 can also react on the 3rd enable signal EN1Z and the first drive signal DGL (such as Fig. 5 A and the figure of output high impedance
Shown in 5C).
It please merge reference picture 4 below and Fig. 6 B, Fig. 6 B show that the circuit box of the second drive circuit 422 shown in Fig. 4 shows
It is intended to.Second control signal group CSG2 includes the first enable signal EN21, the second enable signal EN22 and the 3rd enable signal
EN2Z.Second drive circuit 422 includes source electrode drive circuit 620.Source electrode drive circuit 620 couple sequential control circuit 429 with
Receive the first enable signal EN21, the second enable signal EN22 and the 3rd enable signal EN2Z, and receive tertiary voltage V3 with
And the 4th voltage V4, wherein tertiary voltage V3 are more than the 4th voltage V4.Source electrode drive circuit 620 can react on the first enable signal
EN21 and export tertiary voltage V3 so that as the second drive signal DSL, source electrode drive circuit 620 can react on the second enable signal
EN22 and export the 4th voltage V4 so that as the second drive signal DSL (such as shown in Fig. 5 A), wherein tertiary voltage V3 is second
Drive signal DSL high voltage level, and the 4th voltage V4 is the second drive signal DSL low-voltage level.In addition, source electrode drives
Dynamic circuit 620 can also react on the 3rd enable signal EN2Z and the second drive signal DSL (such as Fig. 5 B and the figure of output high impedance
Shown in 5C).
It please merge reference picture 4 below and Fig. 6 C, Fig. 6 C show that the circuit box of the 3rd drive circuit 423 shown in Fig. 4 shows
It is intended to.3rd control signal group CSG3 includes the first enable signal EN31 and the second enable signal EN32.3rd drive circuit
423 include sensing electrode drive circuit 630.Sensing electrode drive circuit 630 couples sequential control circuit 429 and caused with receiving first
Energy signal EN31 and the second enable signal EN32, and the 5th voltage V5 and the 6th voltage V6 is received, wherein the 5th voltage V5
More than the 6th voltage V6.Sensing electrode drive circuit 630 can react on the first enable signal EN31 and export the 5th voltage V5 with
As the 3rd drive signal DSX, and react on the second enable signal EN32 and export the 6th voltage V6 to be used as the 3rd driving
Signal DSX (such as shown in Fig. 5 A~Fig. 5 C), wherein the 5th voltage V5 is the 3rd drive signal DSX high voltage level, and the
Six voltage V6 are the 3rd drive signal DSX low-voltage level.
In an embodiment of the present utility model, gate driving circuit 610 and source electrode drive circuit 620 can be respectively adopted
Known gate drivers and source electrode driver and on-off circuit of arranging in pairs or groups is realized, wherein opening in gate driving circuit 610
Powered-down road can react on the 3rd enable signal EN1Z and cause the output end of gate driving circuit 610 to be high impedance status, to carry
For the first drive signal DGL of high impedance, and the on-off circuit in source electrode drive circuit 620 can react on the 3rd enable signal
EN2Z and the output end that causes source electrode drive circuit 620 is high impedance status, to provide the second drive signal DSL of high impedance,
But the utility model is not limited thereto.In addition, sensing electrode drive circuit 630 can using known sensing electrode driver come
Realize, but the utility model is not limited thereto.
In summary, the touch control display module and its touch-control display driver that the utility model embodiment is proposed can touched
Control phase of sensitization, control In-cell touch display panel raster data model line and source drive line at least one be high impedance
State, the influence of efficiency is detected to reduce the parasitic capacitance in In-cell touch display panel to touching.
Although the utility model is disclosed as above with embodiment, so it is not limited to the utility model, any affiliated
Have usually intellectual in technical field, do not departing from spirit and scope of the present utility model, when can make a little change with
Retouching, therefore the scope of protection of the utility model ought be defined depending on what claim was defined.
Claims (9)
- A kind of 1. touch-control display driver, it is characterised in that including：First drive circuit, to receive the first control signal group, and multiple first drivings are produced in the touch-control sensing stage according to this Signal, to drive a plurality of raster data model line of In-cell touch display panel；Second drive circuit, to receive the second control signal group, and produce multiple second in the touch-control sensing stage according to this Drive signal, to drive a plurality of source drive line of the In-cell touch display panel；And3rd drive circuit, to receive the 3rd control signal group, and produce the multiple 3rd in the touch-control sensing stage according to this Drive signal, to drive a plurality of sensing electrode drives line of the In-cell touch display panel,Wherein the multiple first drive signal and the multiple second drive signal at least one be multiple high impedances Signal, to reduce the parasitic capacitance effect in the In-cell touch display panel.
- 2. touch-control display driver according to claim 1, it is characterised in that the multiple first drive signal is described Multiple high impedance signals, and the multiple second drive signal is identical frequency, identical phase with the multiple 3rd drive signal Position and multiple pulse signals of same-amplitude.
- 3. touch-control display driver according to claim 1, it is characterised in that the multiple second drive signal is described Multiple high impedance signals, and the multiple first drive signal is identical frequency, identical phase with the multiple 3rd drive signal Position and multiple pulse signals of same-amplitude.
- 4. touch-control display driver according to claim 1, it is characterised in that the multiple first drive signal and institute It is the multiple high impedance signal to state multiple second drive signals, and the multiple 3rd drive signal is multiple pulse signals.
- 5. touch-control display driver according to claim 1, it is characterised in that also include：Sequential control circuit, the first drive circuit, second drive circuit and the 3rd drive circuit are coupled, and To produce the first control signal group, the second control signal group and the 3rd control in the touch-control sensing stage Signal group processed.
- 6. touch-control display driver according to claim 5, it is characterised in that the first control signal group includes first Enable signal, the second enable signal and the 3rd enable signal, and first drive circuit includes：Gate driving circuit, the sequential control circuit is coupled to receive the first enable signal, the second enable signal And the 3rd enable signal, and first voltage and second voltage are received, wherein the first voltage is more than described second Voltage,It is the first voltage that wherein described gate driving circuit, which reacts on the first enable signal and exports a voltage level, The multiple first drive signal, it is the second voltage to react on the second enable signal and export the voltage level The multiple first drive signal, and react on the 3rd enable signal and the multiple the first of output high impedance drives Dynamic signal.
- 7. touch-control display driver according to claim 5, it is characterised in that the second control signal group includes first Enable signal, the second enable signal and the 3rd enable signal, and second drive circuit includes：Source electrode drive circuit, the sequential control circuit is coupled to receive the first enable signal, the second enable signal And the 3rd enable signal, and tertiary voltage and the 4th voltage are received, wherein the tertiary voltage is more than the described 4th Voltage,It is the tertiary voltage that wherein described source electrode drive circuit, which reacts on the first enable signal and exports a voltage level, The multiple second drive signal, it is the 4th voltage to react on the second enable signal and export the voltage level The multiple second drive signal, and react on the 3rd enable signal and the multiple the second of output high impedance drives Dynamic signal.
- 8. touch-control display driver according to claim 5, it is characterised in that the 3rd control signal group includes first Enable signal and the second enable signal, and the 3rd drive circuit includes：Sensing electrode drive circuit, the sequential control circuit is coupled to receive the first enable signal and second cause Energy signal, and the 5th voltage and the 6th voltage are received, wherein the 5th voltage is more than the 6th voltage,Wherein described sensing electrode drive circuit reacts on the first enable signal and exports a voltage level as the described 5th The multiple 3rd drive signal of voltage, and it is described to react on the second enable signal and export the voltage level The multiple 3rd drive signal of 6th voltage.
- A kind of 9. touch control display module, it is characterised in that including：Touch-control display driver according to claim 1 to 8；AndThe In-cell touch display panel, couple the touch-control display driver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106202658U TWM548830U (en) | 2017-02-23 | 2017-02-23 | Touch display module and touch display driver thereof |
| TW106202658 | 2017-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206961095U true CN206961095U (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720531007.5U Active CN206961095U (en) | 2017-02-23 | 2017-05-15 | Touch display module and touch display driver thereof |
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| CN (1) | CN206961095U (en) |
| TW (1) | TWM548830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947286A (en) * | 2019-01-29 | 2019-06-28 | 昆山国显光电有限公司 | A kind of production method of display device and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI727598B (en) * | 2020-01-06 | 2021-05-11 | 友達光電股份有限公司 | Display device |
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2017
- 2017-02-23 TW TW106202658U patent/TWM548830U/en unknown
- 2017-05-15 CN CN201720531007.5U patent/CN206961095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947286A (en) * | 2019-01-29 | 2019-06-28 | 昆山国显光电有限公司 | A kind of production method of display device and display device |
| CN109947286B (en) * | 2019-01-29 | 2022-04-19 | 广州国显科技有限公司 | Display device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM548830U (en) | 2017-09-11 |
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