CN106293178A - Touch control display apparatus and driving method thereof - Google Patents
Touch control display apparatus and driving method thereof Download PDFInfo
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- CN106293178A CN106293178A CN201510285399.7A CN201510285399A CN106293178A CN 106293178 A CN106293178 A CN 106293178A CN 201510285399 A CN201510285399 A CN 201510285399A CN 106293178 A CN106293178 A CN 106293178A
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Abstract
The present invention provides a kind of touch control display apparatus and driving method thereof.This touch control display apparatus includes that the sub-viewing area of at least two, the sub-viewing area of at least one of which have two or more gate line.The drive cycle of this touch control display apparatus includes display scanning period and touch-control period, display at each drive cycle scans the period, one gate drivers, using a gate line in every sub-viewing area as initial sweep line, sends signal the most successively and is scanned the gate line in every sub-viewing area.Wherein, at least two drive cycle display scan the period, this gate drivers respectively using this different gate lines of at least one sub-viewing area as initial sweep line.
Description
Technical field
The present invention relates to a kind of touch control display apparatus and driving method thereof.
Background technology
Existing touch control display apparatus is typically made up of display floater, contact panel and peripheral control circuit etc..In the type of drive of embedded (in-cell) touch control display apparatus, the scan line of display floater is divided into several block (block) with the driving scan line of the sensing signal of contact panel, for in the display scanning of same block and touch-control scanning, the fixing the last item scan line being scanned block by block Article 1 scan line of display scanning.After display scanning completes, display scanning can be interrupted, and touch-control scanning beginning action, to detect touch control operation.After the touch-control of this block has scanned, then start the display scanning of next block.Above-mentioned traditional type of drive, display scanning is interrupted due to touch-control scanning, Article 1 scan line (or the last item scan line) the discharge and recharge time of each block of display floater is driven by touch-control and is affected and there is electrical property difference with other scan lines, it is possible that the discontinuous phenomenon of intersection is interrupted in display.Along with gradually stepping up (charging interval tails off) of touch control display apparatus resolution, this discontinuous phenomenon can be the most notable.
Summary of the invention
In view of this, it is necessary to provide a kind of touch control display apparatus avoiding above-mentioned non-continuous event, including touch-control display panel and drive circuit system.This touch-control display panel includes first substrate and the driving layer being arranged on this first substrate, and this driving layer includes gate line and the source electrode line intersected that insulate with this gate line.This drive circuit system includes the gate drivers being connected with this gate line.This touch-control display panel is divided into the sub-viewing area of at least two, and the sub-viewing area of at least one of which has two or more gate line.The drive cycle of this touch control display apparatus includes display scanning period and touch-control period, display at each drive cycle scans the period, described gate drivers, using a gate line in every sub-viewing area as initial sweep line, sends signal the most successively and is scanned the gate line in every sub-viewing area.Wherein, at least two drive cycle display scan the period, this gate drivers respectively using this different gate lines of at least one sub-viewing area as initial sweep line.
There is a need to provide the driving method of a kind of described touch control display apparatus, the method includes:
Select step: the display at each drive cycle scans the period, select a gate line as initial sweep line in every sub-viewing area, wherein, the display at least two drive cycle scans the period, selects different gate lines as initial sweep line at this at least one sub-viewing area；And
Scanning step: start to send signal to the gate line in every sub-viewing area successively from this initial sweep line, so that this touch control display apparatus to carry out display driving.
Compared to prior art, the display scan line (gate line) that the touch-control display panel of the present invention and driving method thereof make every sub-viewing area interrupt is not a fixing line, make in same sub-viewing area, each gate line has the opportunity to be interrupted, and then improve the electrical property difference existed between scan line, so can improve above-mentioned discontinuous problem so that the overall display picture of touch-control display panel becomes uniform.
Accompanying drawing explanation
Fig. 1 is the perspective view of the touch-control display panel that the present invention provides.
Fig. 2 is that this touch-control display panel shown in Fig. 1 is along the cross-sectional view of II-II line.
Fig. 3 is the schematic diagram driving layer of first substrate shown in Fig. 1.
Fig. 4 is the corresponding relation schematic diagram driving layer and public electrode shown in Fig. 1.
Fig. 5 is the high-level schematic functional block diagram of the embedded touch display device using touch-control display panel as shown in Figure 1.
Fig. 6 is the subregion schematic diagram of described touch-control display panel.
Fig. 7 is in an embodiment, in different drive cycles, and the gate drivers of the described touch control display apparatus oscillogram to the signal that the gate line in the sub-viewing area S1 shown in Fig. 6 is scanned.
Fig. 8 is in another embodiment, in different drive cycles, and the described gate drivers oscillogram to the signal that the gate line in described sub-viewing area S1 is scanned.
Main element symbol description
| Touch control display apparatus | 1 |
| Touch-control display panel | 10 |
| First substrate | 11 |
| First substrate | 111 |
| Drive layer | 112 |
| Insulating barrier | 113 |
| Common electrode layer | 114 |
| Public electrode | 114a |
| Second substrate | 13 |
| Second substrate | 131 |
| Touch-control sensing electrode layer | 132 |
| Touch-control sensing electrode | 132a |
| Liquid crystal layer | 12 |
| Pixel electrode | 112a |
| Pixel cell | Px |
| Drive circuit system | 20 |
| Time schedule controller | 21 |
| Gate drivers | 22 |
| Source electrode driver | 23 |
| Public voltage generating circuit | 24 |
| Touch control sensing circuit | 25 |
| Selection circuit | 26 |
| Gate line | GL |
| Signal | GS |
| Source electrode line | SL |
| View data | DATA |
| Source control signal | SCS |
| Select signal | SS |
| Common electric voltage control signal | CCS |
| Sense wire | TL |
| Grid control signal | GCS |
| Touch-control control signal | TCS |
| Drive cycle | T |
| First drive cycle | T1 |
| Second drive cycle | T2 |
| Xth drive cycle | Tx |
| The display scanning period | Ta |
| The touch-control scanning period | Tb |
| Sensing signal | TS |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
The perspective view of the touch-control display panel 10 that Fig. 1 provides for the present invention, Fig. 2 is that this touch-control display panel 10 shown in Fig. 1 is along the cross-sectional view of II-II line.This touch-control display panel 10 is for timesharing display image and sensing touch control operation.In the present embodiment, this touch-control display panel 10 illustrates as a example by an embedded touch display panels.This touch-control display panel 10 includes the second substrate 13 that first substrate 11 is oppositely arranged with this first substrate 11, and is sandwiched in the liquid crystal layer 12 between this first substrate 11 and this second substrate 13.
This first substrate 11 is array base palte (also referred to as infrabasal plate), and first substrate 11 includes the first substrate 111, drives layer 112, insulating barrier 113 and common electrode layer 114.This driving layer 112 includes multiple pixel electrode 112a being arranged in matrix, and this driving layer 112 is arranged in this first substrate 111.This insulating barrier 113 covers and is formed at this driving layer 112 surface, and this common electrode layer 114 includes multiple public electrode 114a, and this common electrode layer 114 is arranged at this insulating barrier 113 surface.Wherein, this pixel electrode 112a and this public electrode 114a generation horizontal component of electric field makes the liquid crystal molecule of liquid crystal layer 12 deflect to realize display.
This second substrate 13 is opposite substrate (also referred to as upper substrate or color membrane substrates), and this second substrate 13 includes the second substrate 131 and touch-control sensing electrode layer 132.This touch-control sensing electrode layer 132 includes multiple keeping at a certain distance away and the touch-control sensing electrode 132a of spread configuration in a second direction, and this touch-control sensing electrode layer 132 is for detecting the touch control operation of user.This touch-control sensing electrode 132a coordinates with the public electrode 114a as touch-control drive electrode, detects this touch control operation and identifies this touch control operation coordinate position on touch-control display panel 10.
In the present embodiment, the material of this first substrate 111 and the second substrate 131 can be transparent glass or plastic material, and the material of this pixel electrode 112a, this public electrode 114a and this touch-control sensing electrode 132a can be tin indium oxide (Indium Tin
Oxide, ITO) or indium zinc oxide (Indium
Zinc Oxide, IZO), but be not limited thereto.
Refer to the schematic diagram driving layer 112 that Fig. 3, Fig. 3 are first substrate 11 shown in Fig. 1.This driving layer 112 includes that a plurality of gate lines G L(being parallel to each other is also known as " scan line ") and the insulation source electrode line SL(that intersect vertical with this gate lines G L be also known as " data wire ") and a plurality of it is parallel to gate lines G L and the public electrode wire CL insulated with gate lines G L, source electrode line SL.This gate lines G L, public electrode wire CL intersect with this source electrode line SL and define pixel cell Px arranged in arrays, and each pixel cell Px includes a thin film transistor (TFT) 15 (Thin
Film Transistor, TFT) and the pixel electrode 112a that is connected with thin film transistor (TFT) 15.Wherein, this gate lines G L extends with public electrode wire CL (X-direction as depicted) in the first direction, and this source electrode line SL extends along the second direction (Y direction as depicted) different from first direction.
Referring to the corresponding relation schematic diagram that Fig. 4, Fig. 4 are the touch control electrode layer 132 shown in Fig. 1 and public electrode 114a, every string (Row) the pixel cell PX and a public electrode 114a of this driving layer 112 are the most corresponding.It is to say, the number of public electrode 114a is equal with the columns of this pixel cell PX, and the projection crossover that each public electrode 114a and corresponding string pixel cell PX is on the direction being perpendicular to this first substrate 11.It is electrically connected with it addition, each public electrode 114a is corresponding with a wherein public electrode wire CL.In the present embodiment, public electrode 114a is strip.In change embodiment, this public electrode 114a can also make other shape.Described public electrode 114a the most spaced a predetermined distance and mutually insulated ground spread configuration.Described touch-control sensing electrode 132a the most spaced a predetermined distance and mutually insulated ground spread configuration.This public electrode 114a intersects setting with this touch-control sensing electrode 132a mutually insulated.In the present embodiment, this touch-control sensing electrode 132a is strip.Wherein, when this public electrode 114a loads corresponding voltage, this public electrode 114a and this touch-control sensing electrode 132a constitutes sense capacitance Ct, and forms electric field, makes this touch-control display panel 10 sense the touch control operation of outside.Changing ground, this touch-control drive electrode is alternatively arranged on other holding wires on this first substrate, such as the extra sensing electrode arranged.
Referring to Fig. 5, it is the high-level schematic functional block diagram of embedded (in-cell) touch control display apparatus using touch-control display panel 10 as shown in Figure 1, and this embedded touch display device 1 includes touch-control display panel 10 and drive circuit system 20.Specifically, this drive circuit system 20 is used for driving touch-control display panel 10 to show image, and senses the touch control operation on this touch-control display panel 10.Specifically, this drive circuit system 20 includes time schedule controller 21, gate drivers 22, source electrode driver 23, public voltage generating circuit 24, touch control sensing circuit 25 and selection circuit 26.Be it should be noted that each element present invention merely for convenience of description in this drive circuit system 20 and the name carried out according to its major function, and the scope of the present invention can not be formed and limit.For example, it should be appreciated that in other embodiments, described gate drivers 22 and source electrode driver 23 can be substituted by a display driver (or display driver chip, display driver circuit etc.).
Described time schedule controller 21 is for receiving horizontal-drive signal H that external system provides, and correspondence output grid control signal GCS is to gate drivers 22, output source control signal SCS and view data DATA are to source electrode driver 23, outputting common voltage control signal CCS is to public voltage generating circuit 24, and selecting signal SS to selection circuit 26, the most also output touch-control control signal TCS is to touch control sensing circuit 25.
Gate drivers 22 is connected to the pixel cell Px of touch-control display panel 10 by gate lines G L.Gate drivers 22 exports signal GS(also known as " scanning signal " according to grid control signal GCS and by this gate lines G L) to pixel cell Px, with the pixel cell PX that gating is corresponding.Source electrode driver 23 is connected to pixel cell Px by source electrode line SL, and view data DATA is transmitted to pixel cell PX by this source electrode line SL according to source control signal SCS, so that pixel cell Px shows this view data DATA.
Public voltage generating circuit 24 produces the common electric voltage of at least two different wave under the control of common electric voltage control signal CCS.In the present embodiment, the common electric voltage of this at least two different wave is respectively the first common electric voltage Vcom1 and the second common electric voltage Vcom2.Wherein, this first common electric voltage Vcom1 is the DC voltage with the first fixed voltage value, applies to public electrode 114a when this embedded touch display device 1 shows image.Second common electric voltage Vcom2 is the second fixed voltage value and the alternating voltage of the 3rd fixed voltage value checker, for applying to public electrode 114a as touch control signal when this embedded touch display device 1 senses touch control operation.Such as, this second fixed voltage value can be 0V, and the 3rd fixed voltage value can be 3.5V.
Selection circuit 26 is electrically connected at public voltage generating circuit 24, and is connected to public electrode 114a by public electrode wire CL.Selection circuit 26 receives described first common electric voltage Vcom1 and the second common electric voltage Vcom2, and according to selecting signal SS by public electrode wire CL transmission to corresponding public electrode 114a.
Touch control sensing circuit 25 is connected with touch-control sensing electrode 132a by sense wire TL, and receive, according to described touch-control control signal TCS, the sensing signal TS that touch-control display panel 10 receives, by to the process of this sensing signal TS and analyze, such as analog digital conversion (A/D conversion) etc. process, and then identify the coordinate position applying the touch control operation to touch-control display panel 10.
As shown in Figure 6, for the subregion schematic diagram of described touch-control display panel 10.In the present embodiment, this touch-control display panel 10 is divided into the sub-viewing area of at least two.Such as shown in Fig. 6, this touch-control display panel 10 is divided into n sub-viewing area, names with S1 to Sn respectively.In described n sub-viewing area, at least one sub-viewing area has two or more gate lines G L.In a preferred embodiment, every individual sub-viewing area can have gate lines G L of equal number.
Seeing also Fig. 7, described gate drivers 22 sequentially gate lines G L in described sub-viewing area sends signal, to realize the driving of the display to touch-control display panel 10.Each drive cycle T of this touch-control display panel 10 includes a display scanning period Ta and touch-control scanning period Tb.At display scanning period Ta, gate lines G L in this gate drivers 22 antithetical phrase viewing area is scanned, to realize display driving.Scanning period Tb at touch-control, described touch control sensing circuit 25 carries out touch-control scanning to corresponding touch-control sensing electrode 132a, to realize the detecting to touch control operation.Electrode (such as scan electrode) and the second electrodes (such as sensing electrode) is sensed respectively as the first of sensing touch control operation at this touch-control period Tb, this touch-control sensing electrode 132a and described public electrode 114a.Preferably, in the present embodiment, for same sub-viewing area, such as, for described at least one sub-viewing area with two or more gate lines G L, in at least two drive cycle, gate lines G L in this sub-viewing area using gate lines G L different in this sub-viewing area as initial sweep line, is sequentially scanned by described gate drivers 22 respectively.Preferably, in the present embodiment, in two drive cycles of arbitrary neighborhood, the initial sweep line GL of this at least one sub-viewing area is mutually different gate line.This initial sweep line refers in this at least one sub-viewing area, first scanned gate lines G L in each drive cycle.
In one embodiment, at different drive cycles, the initial sweep line of this sub-viewing area changes successively by putting in order of gate lines G L, such as, sequentially change to the last item gate line from Article 1 gate line, or sequentially changes to Article 1 gate line from the last item gate line.Such as Fig. 7, in different drive cycles, the gate drivers 22 oscillogram to the signal that gate lines G L in described sub-viewing area S1 is scanned.Such as, at the first drive cycle T1, the gate line in this sub-viewing area S1, using gate lines G L11 as initial sweep line, is sequentially scanned by this gate drivers 22.At the second drive cycle T2, the gate line in this sub-viewing area S1, using gate lines G L12 as initial sweep line, is sequentially scanned by this gate drivers 22.Correspondingly, at xth drive cycle, the gate line in this sub-viewing area S1, using gate lines G L1x as initial sweep line, is sequentially scanned by this gate drivers 22.In other embodiments, at the first drive cycle T1, can be using the last item gate lines G L1x of this sub-viewing area S1 as initial sweep line, and correspondingly, at xth drive cycle Tx, then using Article 1 gate lines G L11 of this sub-viewing area S1 as initial sweep line.Of course it is to be understood that the initial sweep line that from the beginning of other gate line (such as from the beginning of GL13), can also sequentially convert this sub-viewing area S1.Additionally, be applied in the public voltage signal of a solid magnitude of voltage at display scanning the period Ta, the public electrode 114a of this common electrode layer 114 of each drive cycle (such as T1, T2...Tx).Then, touch-control period Tb at each drive cycle, gate drivers 22 stops sending scanning signal to described gate line, the public electrode 114a of this common electrode layer 114 is applied in touch control signal simultaneously, so that touch control sensing circuit 25 can i.e. would know that be applied to the touch action of this touch control display apparatus 1 by detecting the change in voltage on the touch-control sensing electrode 132a of this touch electrode layer 132.This touch control signal is ac voltage signal.
In another embodiment, at different drive cycles, described gate drivers 22 can randomly choose gate lines G L and sequentially be scanned the gate line of this sub-viewing area as initial sweep line.Preferably, the initial sweep line selected in adjacent two drive cycles is different gate line.Such as shown in Fig. 8, in different drive cycles, the gate drivers 22 oscillogram to the signal that gate lines G L in described sub-viewing area S1 is scanned.Such as, at the first drive cycle T1, this gate drivers 22 randomly chooses gate lines G L11 as initial sweep line, is sequentially scanned the gate line in this sub-viewing area S1.At the second drive cycle T2, this gate drivers 22 randomly chooses gate lines G L13 as initial sweep line, is sequentially scanned the gate line in this sub-viewing area S1.And at xth drive cycle, this gate drivers 22 randomly chooses gate lines G L12 as initial sweep line, is sequentially scanned the gate line in this sub-viewing area S1.Additionally, be applied in the public voltage signal of a solid magnitude of voltage at each drive cycle (such as T1, T2...Tx) display scanning period Ta, the public electrode 114a of this common electrode layer 114.Then, touch-control period Tb at each drive cycle, gate drivers 22 stops sending scanning signal to described gate line, the public electrode 114a of this common electrode layer 114 is applied in touch control signal simultaneously, so that touch control sensing circuit 25 can i.e. would know that be applied to the touch action of this touch control display apparatus 1 by detecting the change in voltage on the touch-control sensing electrode 132a of this touch electrode layer 132.This touch control signal is ac voltage signal.
In sum, the display scan line (gate line) that the above-mentioned gate line scan mode to touch-control display panel 10 makes every sub-viewing area interrupt is not a fixing line, make in same sub-viewing area, each gate line has the opportunity to be interrupted, and then improve the electrical property difference existed between scan line, the overall display picture of touch-control display panel 10 so can be made to become uniform.
Above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (13)
1. a touch control display apparatus, including touch-control display panel and drive circuit system, this touch-control display panel includes first substrate and the driving layer being arranged on this first substrate, and this driving layer includes gate line and the source electrode line intersected that insulate with this gate line；This drive circuit system includes the gate drivers being connected with this gate line；This touch-control display panel is divided into the sub-viewing area of at least two, the sub-viewing area of at least one of which has two or more gate line, each drive cycle of this touch control display apparatus includes display scanning period and touch-control period, it is characterized in that, display at each drive cycle scans the period, described gate drivers is using a gate line in every sub-viewing area as initial sweep line, send signal the most successively the gate line in every sub-viewing area is scanned, display at least two drive cycle scans the period, this gate drivers respectively using this different gate lines of at least one sub-viewing area as initial sweep line.
Touch control display apparatus the most according to claim 1, it is characterised in that in two drive cycles of arbitrary neighborhood, this this gate drivers respectively using this different gate lines of at least one sub-viewing area as initial sweep line.
Touch control display apparatus the most according to claim 1, it is characterised in that every sub-viewing area has the gate line of equal number.
Touch control display apparatus the most according to claim 3, it is characterised in that at different drive cycles, the initial sweep line of at least one sub-viewing area described changes successively by putting in order of described gate line.
Touch control display apparatus the most according to claim 1, it is characterised in that at different drive cycles, described gate drivers randomly chooses the initial sweep line of a gate line at least one sub-viewing area as this of at least one sub-viewing area described.
Touch control display apparatus the most according to claim 5, it is characterised in that the display at adjacent two drive cycles scans the period, and the described gate drivers initial sweep line that at least one sub-viewing area randomly chooses at this differs.
Touch control display apparatus the most according to claim 1, it is characterized in that, described drive circuit system also includes touch control sensing circuit, described touch-control display panel also includes the second substrate being oppositely arranged with described first substrate, being provided with public electrode on this first substrate, this second substrate is provided with touch-control sensing electrode, this touch-control sensing electrode is connected with this touch control sensing circuit, in the touch-control period of described drive cycle, this touch-control sensing electrode coordinates to detect touch control operation with this public electrode.
Touch control display apparatus the most according to claim 7, it is characterised in that the touch-control at each drive cycle scans the period, and described public electrode is applied in touch control signal.
9. the driving method of a touch control display apparatus, this touch control display apparatus has the sub-viewing area of at least two, the sub-viewing area of at least one of which has two or more gate line, and the drive cycle of every sub-viewing area includes display scanning period and touch-control period, and the method includes:
Select step: the display at each drive cycle scans the period, select a gate line as initial sweep line in every sub-viewing area, wherein, the display at least two drive cycle scans the period, selects different gate lines as initial sweep line at this at least one sub-viewing area；And
Scanning step: start to send signal to the gate line in every sub-viewing area successively from this initial sweep line, so that this touch control display apparatus to carry out display driving.
The driving method of touch control display apparatus the most according to claim 9, it is characterised in that the display at arbitrary neighborhood two drive cycle scans the period, and described selection step selects different gate lines as initial sweep line at least one sub-viewing area described.
The driving method of 11. touch control display apparatus according to claim 9, it is characterized in that, described every sub-viewing area has the gate line of equal number, wherein, display at different drive cycles scans the period, and described selection step sequentially selects different gate lines as initial sweep line according to the putting in order of gate line in every sub-viewing area.
The driving method of 12. touch control display apparatus according to claim 9, it is characterized in that, display in the different driving cycle scans the period, and described selection step randomly chooses the initial sweep line of a gate line at least one sub-viewing area as this of at least one sub-viewing area described.
The driving method of 13. touch-control display panels according to claim 11, it is characterised in that the display at adjacent two drive cycles scans the period, and the initial sweep line that described selection step randomly chooses at least one sub-viewing area at this differs.
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| CN201510285399.7A CN106293178A (en) | 2015-05-29 | 2015-05-29 | Touch control display apparatus and driving method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510285399.7A CN106293178A (en) | 2015-05-29 | 2015-05-29 | Touch control display apparatus and driving method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109508107A (en) * | 2017-09-15 | 2019-03-22 | 敦泰电子有限公司 | Embedded touch shows equipment |
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| CN103092400A (en) * | 2011-11-07 | 2013-05-08 | 株式会社日本显示器西 | Display device with touch sensor, potential control method, and program |
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