CN105609062A - Embedded touch control display device and driving method thereof - Google Patents
Embedded touch control display device and driving method thereof Download PDFInfo
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- CN105609062A CN105609062A CN201410671172.1A CN201410671172A CN105609062A CN 105609062 A CN105609062 A CN 105609062A CN 201410671172 A CN201410671172 A CN 201410671172A CN 105609062 A CN105609062 A CN 105609062A
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Abstract
The invention discloses an embedded touch control display device and a driving method thereof. The embedded touch control display device comprises multiple sub touch control display areas; and each sub touch control display area comprises multiple common electrodes, multiple pixel electrodes and at least one touch sensing electrode. The driving method comprises the following steps: a first common voltage is loaded to the common electrode of one sub touch control display area of the embedded touch control display device, and the common electrode is matched with the pixel electrode to display an image; and a second common voltage is loaded to the common electrode of any one sub touch control display area expect the first sub touch control display area, and the common electrode is matched with the touch sensing electrode for sending touch operation. When the common electrode in the sub touch control display area receives the first common voltage and the second common voltage at the same time, the second common voltage is loaded preferentially.
Description
Technical field
The present invention relates to a kind of embedded touch display device, relate in particular to a kind of driving method of embedded touch display device.
Background technology
In current embedded touch display device, it utilizes public electrode as a touch-control drive electrode wherein, with the public position coordinates that coordinates sensing touch to operate and identify this touch operation of an other touch-control sensing electrode. Because need to coordinating pixel electrode simultaneously, public electrode carries out image demonstration, therefore showing to separate with image, the touch-control sensing of such embedded touch display device carries out, in other words, the time decreased of pixel electrode load image information, thus cause the resolution ratio of the demonstration image of embedded touch display device to be restricted.
Summary of the invention
In view of above content, be necessary to provide the driving method of the embedded touch display device that a kind of image display resolution is higher.
Further, provide the embedded touch display device that a kind of image display resolution is higher.
A kind of driving method of embedded touch display device, this embedded touch display device comprises touch-control display panel and public voltage generating circuit, this public voltage generating circuit is for generation of the first common electric voltage and second common electric voltage of two different wave, this touch-control display panel comprises continuous and nonoverlapping 1st ~ n sub-touch display area in position, n is greater than 1 natural number, in each sub-touch display area, be provided with multiple pixel electrodes, multiple public electrodes and multiple touch-control sensing electrode, this pixel electrode is for receiving image information to be shown, this public electrode is used for loading this first common electric voltage and the second common electric voltage, this driving method comprises:
Load successively the first common electric voltage this public electrode to the sub-touch display area of 1st ~ n along first direction, this public electrode coordinates this pixel electrode to show this image information;
Meanwhile, load successively the second common electric voltage this public electrode to the sub-touch display area of 1st ~ n along second direction, this touch-control sensing electrode coordinates sensing touch operation with this public electrode, and exports corresponding sensing signal;
Wherein, in the time that wish loads sub-touch display area that the sub-touch display area of this first common electric voltage and wish load this second common electric voltage and is overlapped in the sub-touch display area of j, this public electrode of the sub-touch display area of this j suspends this first common electric voltage of loading, and only load this second common electric voltage, n is greater than 1 integer, 1≤j≤n.
A kind of embedded touch display device comprises touch-control display panel, and this touch-control display panel comprises 1st ~ n touch display area. In each touch display area, comprise: multiple pixel electrodes, for receiving image information to be shown; Multiple public electrodes, the plurality of public electrode is used for loading this first common electric voltage or this second common electric voltage; Multiple touch-control electrodes, for coordinate sensing touch operation with this public electrode, and export corresponding sensing signal. This embedded touch display device further comprises public voltage generating circuit, this public voltage generating circuit is for generation of the first common electric voltage and second common electric voltage of at least two different wave, and load successively the first common electric voltage this public electrode to the sub-touch display area of 1st ~ n along first direction, this public electrode coordinates this pixel electrode to show this image information; Meanwhile, load successively the second common electric voltage this public electrode to the sub-touch display area of 1st ~ n along second direction, this touch-control sensing electrode coordinates sensing touch operation with this public electrode, and exports corresponding sensing signal; In the time that wish loads sub-touch display area that the sub-touch display area of this first common electric voltage and wish load this second common electric voltage and is overlapped in the sub-touch display area of j, this public electrode of the sub-touch display area of this j suspends this first common electric voltage of loading, and only load this second common electric voltage, n is greater than 1 integer, 1≤j≤n.
Compared to prior art, on this touch display panel, different sub-touch-control sensing regions load the first common electric voltage and the second common electric voltage simultaneously, make to touch display device epigraph shows from sensing touch operation and can carry out in the horizontal touch sensitive areas of different sons simultaneously, thus, each sub-touch-display unit is in a horizontal drive cycle, can utilize time showing image or the sensing touch operation in 1 complete horizontal drive cycle, effectively improved pixel cell in sub-touch-control sensing region charging interval, and then improve the resolution ratio of this embedded touch display device.
Brief description of the drawings
Fig. 1 is the perspective view of a touch-control display panel in a preferred embodiment of the present invention.
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 corresponding relation schematic diagram of this pixel electrode layer shown in Fig. 1 and the plurality of public electrode.
Fig. 4 is the corresponding relation schematic diagram of multiple public electrodes shown in Fig. 1 and this touch-control sensing electrode.
Fig. 5 adopts the high-level schematic functional block diagram of the embedded touch display device of touch-control display panel as shown in Figure 1.
Fig. 6-7 are the subregion schematic diagram of touch-control display panel shown in Fig. 5.
Fig. 8 drives embedded touch display device shown in Fig. 5 in the oscillogram in the 1st horizontal drive cycle.
Fig. 9 is corresponding to sub-touch display area on the touch-control display panel of Fig. 8 is at the driving schematic diagram in the 1st horizontal drive cycle.
Figure 10 drives as shown in Figure 5 embedded touch display device in the oscillogram in the 2nd horizontal drive cycle.
Figure 11 is corresponding to sub-touch display area on the touch-control display panel of Figure 10 is at the driving schematic diagram in the 2nd horizontal drive cycle.
Figure 12 is the oscillogram that embedded touch display device drove in i horizontal drive cycle and i+1 horizontal drive cycle as shown in Figure 5.
Figure 13 be on the touch-control display panel of corresponding Figure 12 touch display area at the driving schematic diagram in i horizontal drive cycle.
Figure 14 be on the touch-control display panel of corresponding Figure 12 touch display area at the driving schematic diagram in i+1 horizontal drive cycle.
Figure 15 is that the present invention one changes and in embodiment, drives the oscillogram in the 1st horizontal drive cycle of embedded touch display device as shown in Figure 5.
Figure 16 be on the touch-control display panel of corresponding Figure 15 touch display area at the driving schematic diagram in the 1st horizontal drive cycle.
Figure 17 is that embedded touch display device shown in Fig. 5 is in the oscillogram in the 2nd horizontal drive cycle.
Figure 18 be on the touch-control display panel of corresponding Figure 15 touch display area at the driving schematic diagram in the 2nd horizontal drive cycle.
Figure 19 drives as shown in Figure 5 embedded touch display device in the oscillogram in i horizontal drive cycle and i+1 horizontal drive cycle.
Figure 20 be on the touch-control display panel of corresponding Figure 19 touch display area at the driving schematic diagram in i horizontal drive cycle.
Figure 21 be on the touch-control display panel of corresponding Figure 19 touch display area at the driving schematic diagram in i+1 horizontal drive cycle.
Main element symbol description
| Embedded touch display device | 1 |
| Touch-control display panel | 10 |
| Multiple substrate | 11 |
| Liquid crystal layer | 12 |
| Color membrane substrates | 13 |
| Thin film transistor (TFT) | 15 |
| The first substrate | 111 |
| Pixel electrode layer | 112 |
| Pixel electrode | 112a |
| Insulating barrier | 113 |
| Common electrode layer | 114 |
| Public electrode | 114a |
| The second substrate | 131 |
| Touch-control sensing electrode layer | 132 |
| Touch-control sensing electrode | 132a |
| Drive circuit module | 20 |
| Time schedule controller | 21 |
| Gate drivers | 22 |
| Source electrode driver | 23 |
| Public voltage generating circuit | 24 |
| Voltage generation circuit | 241 |
| Control circuit | 243 |
| Touch control sensing circuit | 25 |
| Gate line | GL、GL11~GLnx |
| Signal | GS |
| Source electrode line | SL、SL1~SLy |
| Public electrode wire | CL、CL11~CLnx |
| Sense wire | TL |
| Image information | DATA |
| Horizontal-drive signal | H |
| Grid control signal | GCS |
| Source control signal | SCS |
| Touch-control control signal | TCS |
| Common electric voltage | Vcom |
| The first common electric voltage | Vcom1 |
| The second common electric voltage | Vcom2 |
| Pixel cell | PX |
| Sub-touch display area | S1~Sn |
Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
Illustrate the structure of embedded touch display device of the present invention and the driving method of this embedded touch display device below in conjunction with accompanying drawing.
Refer to Fig. 1-2, wherein, Fig. 1 is the perspective view of a touch-control display panel 10 in a preferred embodiment of the present invention, and 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 show image and sensing touch operation simultaneously. This touch-control display panel 10 comprises multiple substrate 11, liquid crystal layer 12 and color membrane substrates 13, and wherein, multiple substrate 11 is oppositely arranged with color membrane substrates 13, and liquid crystal layer 12 is arranged between multiple substrate 11 and color membrane substrates 13.
Particularly, this multiple substrate 11(also claims infrabasal plate) comprise the first substrate 111, pixel electrode layer 112, insulating barrier 113 and common electrode layer 114. This pixel electrode layer 112 is arranged in this first substrate 111, comprises multiple pixel electrode 112a (Fig. 2) that arrange with array form. This insulating barrier 113 is covered in this pixel electrode layer 112 surfaces. This common electrode layer 114 is arranged at this insulating barrier 113 surfaces, comprises multiple public electrode 114a. Wherein, the plurality of pixel electrode 112a and this public electrode 114a produce electric field (not shown) and make the liquid crystal deflecting element corresponding angle of liquid crystal layer 12, thereby show image.
This color membrane substrates 13 (also deserving to be called substrate or subtend substrate) comprises the second substrate 131 and touch-control sensing electrode layer 132. This touch-control sensing electrode layer 132 is arranged at a side of second substrate 131 contiguous the first substrates 111, for receiving user's touch operation, comprises the touch-control sensing electrode 132a that multiple intervals one preset distance mutually insulated arranges. This touch-control sensing electrode 132a coordinates with public electrode 114a, detects the touch operation that puts on this touch-control display panel 10, and identifies this touch and operate in the 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; The material of this pixel electrode 112a, this public electrode 114a and this touch-control sensing electrode 132a can be tin indium oxide (IndiumTinOxide, ITO) or indium zinc oxide (IndiumZincOxide, IZO).
Refer to Fig. 3, it is the corresponding relation schematic diagram of this pixel electrode layer 112 shown in Fig. 1 and the plurality of public electrode 114a, and this pixel electrode layer 112 comprises source electrode line SL and multiple gate lines G L and the public electrode wire CL with gate lines G L, source electrode line SL insulation of being parallel to that multiple gate lines G L that are parallel to each other, multiple and the plurality of gate lines G L are vertical and insulate crossing. The plurality of gate lines G L, multiple public electrode wire CL crossing with the plurality of source electrode line SL and define multiple be matrix arrange pixel cell PX, the pixel electrode 112a that each pixel cell PX comprises a thin film transistor (TFT) 15 (ThinFilmTransistor, TFT) and is connected with thin film transistor (TFT) 15. Wherein, the plurality of gate lines G L and public electrode wire CL extend along this first direction X, and the plurality of source electrode line SL all extends along this second direction Y. Particularly, the grid of thin film transistor (TFT) 15 (not indicating) is electrically connected gate lines G L; The source electrode (not indicating) of thin film transistor (TFT) 15 is electrically connected source electrode line SL; The drain electrode (not indicating) of thin film transistor (TFT) 15 is electrically connected this pixel electrode 112a.
Each row (Row) pixel cell PX of this pixel electrode layer 112 is corresponding in position with a public electrode 114a, the number that is to say this public electrode 114a equates with the columns of the plurality of pixel cell PX, and each public electrode 114a with a corresponding row pixel cell PX part projection crossover in the direction perpendicular to this multiple substrate 11. In addition, a wherein public electrode wire CL electric connection of each public electrode 114a correspondence. In the present embodiment, this public electrode 114a is strip. Wherein, when this pixel electrode 112a loads corresponding picture signal by this thin film transistor (TFT) 15 from source electrode line SL, when public electrode 114a loads corresponding voltage, this public electrode 114a and this pixel electrode 112a form a liquid crystal capacitance LC (not shown), and form electric field (not shown), thereby drive the angle of liquid crystal deflecting element and show this image information.
Refer to Fig. 4, it is the corresponding relation schematic diagram of multiple public electrode 114a shown in Fig. 1 and this touch-control sensing electrode 132a, and wherein, the plurality of public electrode 114a is interval preset distance and mutually insulated ground spread configuration on second direction Y. The plurality of touch-control sensing electrode 132a is interval preset distance and mutually insulated ground spread configuration on first direction X, and in other words, the plurality of public electrode 114a is mutually vertical and crossing on locus with the plurality of touch-control sensing electrode 132a. In the present embodiment, this touch-control sensing electrode 132a is also strip. Wherein, in the time that this public electrode 114a loads corresponding voltage, this public electrode 114a and this touch-control sensing electrode 132a form a sense capacitance Ct, and form electric field (not shown), now, this touch-control display panel 10 gets final product the touch operation of sensing outside.
Refer to Fig. 5, it is to adopt the high-level schematic functional block diagram of the embedded touch display device 1 of touch-control display panel 10 as shown in Figure 1, this embedded touch display device comprises touch-control display panel 10 and drive circuit module 20, this drive circuit module 20 is for driving this touch-control display panel 10 to show image, and while sensing is also identified the touch operation that this touch-control display panel 10 receives.
This drive circuit module 20 comprises time schedule controller 21, gate drivers 22, source electrode driver 23, public voltage generating circuit 24 and touch control sensing circuit 25.
This gate drivers 22 is connected to the pixel cell PX of touch-control display panel 10 by multiple gate lines G L, source electrode driver 23 is connected to the pixel cell PX of touch-control display panel 10 by multiple source electrode line SL, this touch control sensing circuit 25 is connected with touch-control display panel 10 by multiple sense wire TL.
Time schedule controller 21 is the horizontal-drive signal H that system (not shown) provides for receiving image information DATA to be shown and outside, and corresponding output grid control signal GCS is to gate drivers 22, output source control signal SCS and image information DATA are to source electrode driver 23, and output one common electric voltage control signal CCS is to public voltage generating circuit 24, also exports in addition touch-control control signal TCS to touch control sensing circuit 25.
Gate drivers 22 is exported signal GS to pixel cell PX, with pixel cell PX corresponding to gating according to this grid control signal GCS and by this gate lines G L. Source electrode driver 23 transfers to pixel cell PX by this image information DATA by this source electrode line SL according to this source control signal SCS, thereby makes pixel cell PX show this image information DATA.
Public voltage generating circuit 24 comprises voltage generation circuit 241 and control circuit 243, this public voltage generating circuit is for producing the common electric voltage Vcom of at least two different wave according to this common electric voltage control signal CCS, in the present embodiment, the common electric voltage Vcom of this at least two different wave is 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, for be applied to public electrode 114a in the time that this embedded touch display device 1 shows image. The second common electric voltage Vcom2 is the alternating voltage of two fixed voltage value checkers, the alternating voltage of for example the first fixed voltage value and the second fixed voltage value checker, is applied to public electrode 114a for detecting at this embedded touch display device 1 while touching operation.
This control circuit 243 exports the first common electric voltage Vcom1 to region that touch-control display panel 10 is corresponding with the second common electric voltage Vcom2 for controlling this public voltage generating circuit.
Touch control sensing circuit 25 is received because this touch-control display panel 10 receives and is touched the sensing signal TS that operation produces by sense wire TL according to this touch-control control signal TCS, can identify by analyzing this sensing signal TS the coordinate position that puts on this touch operation on this touch-control display panel 10.
Refer to Fig. 6-7, it is all subregion schematic diagrames of touch-control display panel 10 shown in Fig. 5. As shown in Figure 6, this touch-control display panel 10 defines multiple sub-touch display area S, each sub-touch display area S comprises multiple gate lines G L, multiple source electrode line SL, multiple public electrode wire CL, multiple pixel electrode 112a (Fig. 3), multiple public electrode 114a and multiple touch-control sensing electrode 132a(Fig. 4), in the present embodiment, touch-control display panel 10 comprises 1st ~ n sub-touch display area S1 ~ Sn.
Particularly, as shown in Figure 7, the 1st sub-touch display area S1 comprises gate lines G L11 ~ GL1x, source electrode line SL1 ~ SLy, public electrode wire CL11 ~ CL1x; The sub-touch display area Si of i comprises gate lines G Li1 ~ GLix, public electrode wire CLi1 ~ CLix; I+1 touch display area Si+1 comprises gate lines G L (i+1) 1 ~ GL (i+1) x, public electrode wire CL (i+1) 1 ~ CL (i+1) x, and wherein, n, x, y are the natural number that is greater than 1,1≤i < n.
Wherein, each pixel cell PX comprises the liquid crystal capacitance LC being electrically connected with thin film transistor (TFT) 15, and this liquid crystal capacitance LC is made up of this pixel electrode 112a (Fig. 1), liquid crystal layer 12 and public electrode 114a (Fig. 1). Thin film transistor (TFT) 15 is electrically connected respectively gate lines G L, source electrode line SL and this pixel electrode 112a. When thin film transistor (TFT) 15 is opened under the control of signal GS, this image information DATA receiving from source electrode transfers to drain electrode (not indicating) and pixel electrode 112a. Meanwhile, if public electrode 114a loads corresponding voltage, this liquid crystal capacitance LC forms electric field, thereby drives the liquid crystal deflecting element corresponding angle in liquid crystal layer 12, to reach the effect that shows this image information DATA.
Under the structure of aforesaid pixel cell PX, when any sub-touch-display unit S is wherein in display time interval, pixel electrode 112a loads this image information DATA, and this public electrode 114 loads this first common electric voltage Vcom1, between two electrodes of liquid crystal capacitance LC, form electric field, the liquid crystal molecule (not indicating) of liquid crystal layer 12 produces deflection under this electric field action, thus corresponding this image information DATA that shows.
When any sub-touch-display unit S is in the touch-control period, public electrode 114a loads this second common electric voltage Vcom2, thus, public electrode 114a and touch-control sensing electrode 132a form electric field, in the time that user touches touch-control display panel 10, the electric field that capacitor C t the two poles of the earth that public electrode 114a and touch-control sensing electrode 132a form form changes, and the corresponding sensing signal TS that forms transfers to touch control sensing circuit 25 by sense wire TL.
Refer to Fig. 8, it is to drive the oscillogram of embedded touch display device 1 as shown in Figure 5, wherein, H is the oscillogram of the horizontal-drive signal that receives of time schedule controller 21, this horizontal-drive signal H comprises multiple horizontal drive cycle T, and the duration T in each horizontal drive cycle represents that a sub-touch display area loads the time of this picture signal in the horizontal direction. In present embodiment, this T is 16.7ms/n.
Load successively and cyclically this public electrode 114a of the first common electric voltage Vcom1 to the sub-touch display area of 1st ~ n along first direction, this common electrical 114a coordinates this pixel electrode 112a to show this image information DATA; Meanwhile, load successively and cyclically this public electrode 114a of the second common electric voltage Vcom2 to the sub-touch display area of 1st ~ n along second direction, this touch-control sensing electrode coordinates sensing touch operation with this public electrode, and exports corresponding sensing signal TS. In the present embodiment, this first direction is identical with second direction, is the positional alignment direction according to the sub-touch display area of 1st～n.
See also Fig. 8 and Fig. 9, Fig. 9 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of the 1st horizontal drive cycle T 1, in the 1st horizontal drive cycle T 1, wherein, this horizontal drive cycle T 1 comprises Ta time period and Tb time period, gate drivers 22 is according to grid control signal GCS, and by gate lines G L11 ~ GL1x with the thin film transistor (TFT) 15 of first frequency sequential delivery signal GS1 ~ GSx to the 1 sub-touch display area S1, with select progressively and open thin film transistor (TFT) 15, image information DATA is by source electrode driver 23, source electrode line SL1 ~ SLy transfers to the source electrode of the multiple thin film transistor (TFT)s 15 in the 1st sub-touch display area S1, and then be loaded in pixel electrode 112a. simultaneously, control circuit 243 is controlled this voltage generation circuit 241 this first common electric voltage of output Vcom1, and be loaded on the public electrode 114a of the 1st sub-touch display area S1 by public electrode wire CL11 ~ CL1x, thus, this pixel electrode 112a coordinate with public electrode 114a make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal deflecting element in liquid crystal layer 12, and then on this touch-control display panel 10, show this image information DATA.
Simultaneously, in the Ta time period, the 2nd sub-touch display area S2, control circuit 243 is controlled this voltage generation circuit and is exported this second common electric voltage Vcom2, and be loaded on the public electrode 114a of this two sub-touch display area S by public electrode wire CL21 ~ CL2x with second frequency, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thereby corresponding to the 2nd sub-touch display area S2 sensing touch operation.
In the Tb time period, the 3rd sub-touch display area S3, control circuit 243 is controlled this voltage generation circuit and is exported this second common electric voltage Vcom2, and be loaded on the public electrode 114a of the 3rd sub-touch display area S3 by public electrode wire CL31 ~ CL3x with second frequency, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thereby corresponding to the 3rd sub-touch display area S3 sensing touch operation.
Wherein, this Ta time period is identical in time span with the Tb time period, is 1/2T. In the present embodiment, this first frequency is this second frequency 1/2, and for example this first frequency is 60Hz, and this second frequency is 120Hz. In other embodiments of the invention, first frequency can also be greater than 60Hz, and accordingly, second frequency also should be greater than 60Hz.
It should be noted that, although describe with the 1st horizontal cycle in the present embodiment, so, in actual driving process, can be any horizontal drive cycle in this horizontal drive signals, not as limit.
See also Figure 10 and Figure 11, Figure 10 drives as shown in Figure 5 embedded touch display device 1 in the oscillogram of the 2nd horizontal drive cycle T 2, Figure 11 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of the 2nd horizontal drive cycle T 2.
In the 2nd horizontal drive cycle T 2, gate drivers 22 is by thin film transistor (TFT) 15 corresponding in gate lines G L21 ~ GL2x sequential delivery signal GS1 ~ GSx to the 2 sub-touch display area S2, thin film transistor (TFT) 15 orders are selected and open, image information DATA transfers to the source electrode of the thin film transistor (TFT) 15 of the 2nd sub-touch display area S2 by source electrode driver 23, source electrode line SL1 ~ SLy, and then is loaded on pixel electrode 112a. Simultaneously, control circuit 243 is controlled voltage generation circuit 241 this first common electric voltage of output Vcom1, and be loaded on the public electrode 114a of the 2nd sub-touch display area S2 by public electrode wire CL21 ~ CL2x, thus, this pixel electrode 112a coordinate with public electrode 114a make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal layer molecule deflection, and then on this touch-control display panel 10, show this image information DATA.
Simultaneously, control circuit 243 is controlled voltage generation circuit 241 this second common electric voltage of output Vcom2, and be loaded on respectively the public electrode 114a of the 4th sub-touch display area S4 and the 5th sub-touch display area S5 in Ta time period and Tb time period by public electrode wire CL41 ~ CL4x, CL51 ~ CL5x, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation.
See also Figure 12 and Figure 13, Figure 12 is that i horizontal drive cycle T i and i+1 horizontal drive cycle T i+1 drive the oscillogram of embedded touch display device 1 as shown in Figure 5, Figure 13 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of i horizontal drive cycle T i. It should be noted that, the i horizontal drive cycle T i representing in Figure 12 and i+1 horizontal drive cycle T i+1 are only schematic diagram, though the 1st horizontal drive cycle T 1 that it represents from Fig. 8, Figure 10 is different with the icon length of the 2nd horizontal drive cycle T 2, precisely because the real time length representing is identical, is T.
At i horizontal drive cycle T i, when wish loads sub-touch display area S that the sub-touch display area S of this first common electric voltage Vcom1 and wish load this second common electric voltage Vcom2 and is overlapped in the sub-touch display area Sj of j, this public electrode of the sub-touch display area Sj of this j suspends this first common electric voltage of loading Vcom1, and only load this second common electric voltage Vcom2, wherein, 1 < j≤n.
Particularly, this grid control signal GCS control gate driver 22 suspends transmission signal GS1 ~ GSx to the sub-touch display area Sj of this j, simultaneously, source control signal SCS controls source electrode line SL1 ~ Sly and suspends this image information of loading DATA, for example the plurality of source electrode line SL1 ~ Sly is in high-impedance state, control circuit 243 is controlled this voltage generation circuit 241 and is suspended the public electrode 114a of this first common electric voltage of output Vcom1 to the sub-touch display area Sj of this j, that is this first common electric voltage Vcom1 suspends the public electrode 114a that is loaded on the sub-touch display area Sj of j. thus, this pixel electrode 112a and public electrode 114a time-out make liquid crystal capacitance LC form electric field, the sub-touch display area Sj of this j is suspended and show this image information DATA.
Simultaneously, in the Ta time period, control circuit 243 is controlled the public electrode 114a of this voltage generation circuit 241 this second common electric voltage of output Vcom2 to this j-1 touch display area Sj-1, that is this second common electric voltage Vcom2 is loaded on public electrode 114a corresponding to this j-1 touch-control sensing region Sj-1 by public electrode wire GL (j-1) 1 ~ GL (j-1) x, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation. In the Tb time period, control circuit 243 is controlled the public electrode 114a of this voltage generation circuit 241 this second common electric voltage of output Vcom2 to the sub-touch display area Sj of this j, that is this second common electric voltage Vcom2 is loaded on public electrode 114a corresponding to the sub-touch-control sensing of this j region Sj by public electrode wire GLj1 ~ GLjx, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation.
See also Figure 12 and Figure 14, Figure 14 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of i+1 horizontal drive cycle T i+1. At this i+1 horizontal drive cycle T i+1, gate drivers 22 is under the control of this signal GCS, by gate lines G Lj1 ~ GLjx sequential delivery signal GS1 ~ GSx to this thin film transistor (TFT) 15 corresponding in the sub-touch display area Sj of this j, with select progressively and start the plurality of thin film transistor (TFT) 15, source electrode driver 23 is loaded on this pixel electrode 112a by source electrode line SL1 ~ SLy by this image information DATA under this source signal SCS controls. Simultaneously, control circuit 243 is controlled this voltage generation circuit 241 this first common electric voltage of output Vcom1, and be loaded on the public electrode 114a of the sub-touch display area Sj of j by public electrode wire CLj1 ~ CLjx, thus, this pixel electrode 112a coordinate with public electrode 114a make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal layer molecule deflection, and then correspondence shows this image information DATA at the sub-touch display area Sj of this j.
Meanwhile, control circuit 243 is controlled this voltage generation circuit 241 and within Ta time period and Tb time period, is exported respectively the second common electric voltage Vcom2, and by corresponding public electrode wire GL(j+1) ~ GL (j+1) x, GL(j+2) ~ GL (j+2) x (not shown) is loaded on the public electrode 114a of j+1 touch display area Sj+1 and j+2 touch display area Sj+2 (not shown), this touch-control sensing electrode 132a coordinate with this public electrode 114a make sense capacitance Ct form electric field, thereby corresponding to this j+1 touch display area Sj+1 and the operation of this j+2 touch display area Sj+2 sensing touch.
By that analogy, the first common electric voltage Vcom1 is loaded on other touch display area S corresponding on touch-control display panel 10 with the second common electric voltage Vcom2 successively according to aforementioned manner, does not repeat them here.
Refer to Figure 15, it is that the present invention one changes the oscillogram that drives this embedded touch display device 1 in embodiment, technical scheme in this change embodiment and previous embodiment is basic identical, difference is only: this first direction is contrary with second direction, first direction is the positional alignment direction according to the sub-touch display area of 1st～n, second direction is the positional alignment direction according to the sub-touch display area in n～1, and the first frequency of the loading of this first common electric voltage Vcom1 is identical with the second frequency of the loading of the second common electric voltage Vcom2, for example, be 60Hz.
See also Figure 15 and Figure 16, Figure 16 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of the 1st horizontal drive cycle T 1.
In the 1st horizontal drive cycle T 1, gate drivers 22 passes through the thin film transistor (TFT) 15 of gate lines G L11 ~ GL1x with first frequency sequential delivery signal GS1 ~ GSx to the 1 sub-touch display area S1 under the control of signal GCS, and thin film transistor (TFT) 15 is selected and unlatching successively. Image information DATA transfers to the source electrode of the thin film transistor (TFT) 15 of the 1st sub-touch display area S1 by source electrode driver 23, source electrode line SL11 ~ SL1y, and then is loaded in pixel electrode 112a. Simultaneously, this control circuit 243 is controlled voltage generation circuit 241 and is exported the first common electric voltage Vcom1, and be loaded on the public electrode 114a of the 1st sub-touch display area S1 by public electrode wire CL11 ~ CL1x, thus, this pixel electrode 112 coordinate with public electrode 114 make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal deflecting element in liquid crystal layer 12, and then correspondence shows this image information DATA at the 1st sub-touch display area S1.
Simultaneously, at the sub-touch display area Sn of n, this control circuit 243 is controlled voltage generation circuit 241 and is exported the second common electric voltage Vcom2, and be loaded on corresponding public electrode 114a with second frequency by public electrode wire CLn1 ~ CLnx, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation.
See also Figure 17 and Figure 18, Figure 17 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of the 2nd horizontal drive cycle T 2, Figure 18 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of the 2nd horizontal drive cycle T 2.
In the 2nd horizontal drive cycle T 2, gate drivers 22 is by the thin film transistor (TFT) 15 of gate lines G L21 ~ GL2x sequential delivery signal GS1 ~ GSx to the 2 sub-touch display area S2 under the control of grid control signal GCS, and thin film transistor (TFT) 15 is sequentially selected and opens. Image information DATA transfers to the source electrode of corresponding thin film transistor (TFT) 15 by source electrode driver 23, source electrode line SL1 ~ SLy, and then is loaded in pixel electrode 112a. Simultaneously, control circuit 243 is controlled voltage generation circuit 241 and is exported the first common electric voltage Vcom1, and be loaded on by public electrode wire CL21 ~ CL2x the public electrode 114a that the 2nd sub-touch display area S2 is corresponding, thus, this pixel electrode 112a coordinate with public electrode 114a make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal layer 12 deflections, and then correspondence shows this image information DATA at the 2nd sub-touch display area S2.
Simultaneously, in n-1 touch display area Sn-1, this control circuit 243 is controlled voltage generation circuit 241 and is exported the second common electric voltage Vcom2, and be loaded on corresponding public electrode 114a by corresponding public electrode wire CL (n-1) 1 ~ CL (n-1) x, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation.
See also Figure 19 and Figure 20, Figure 19 is that i horizontal drive cycle T i and i+1 horizontal drive cycle T i+1 drive the oscillogram of embedded touch display device 1 as shown in Figure 5, Figure 20 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of i horizontal drive cycle T i. It should be noted that, the i horizontal drive cycle T i representing in Figure 19 and i+1 horizontal drive cycle T i+1 are only schematic diagram, though the 1st horizontal drive cycle T 1 that it represents from Figure 15, Figure 17 is different with the icon length of the 2nd horizontal drive cycle T 2, precisely because the real time length representing is identical, is 1H.
At i horizontal drive cycle T i, when wish loads sub-touch display area S that the sub-touch display area S of this first common electric voltage Vcom1 and wish load this second common electric voltage Vcom2 and is overlapped in the sub-touch display area Sj of j, this public electrode of the sub-touch display area Sj of this j suspends this first common electric voltage of loading Vcom1, and only loads this second common electric voltage Vcom2.
Particularly, gate drivers 22 suspends transmission signal GS1 ~ GSx to the sub-touch display area Sj of this j under the control of this grid control signal GCS, simultaneously, source electrode driver 23 suspends by source electrode line SL1 ~ Sly and loads this image information DATA to the sub-touch display area Sj of this j under the control of this source control signal SCS, and for example the plurality of source electrode line SL1 ~ Sly is in high-impedance state; Control circuit 243 is controlled voltage generation circuit 241 and is also suspended output the first common electric voltage Vcom1 to public electrode 114a corresponding to the sub-touch display area Sj of this j, that is the first common electric voltage Vcom1 suspends the public electrode 114a that is loaded on the sub-touch display area Sj of j. Thus, this pixel electrode 112a and public electrode 114a time-out make liquid crystal capacitance LC form electric field, and the sub-touch display area Sj of this j suspends this image information of demonstration DATA.
Simultaneously, control circuit 243 is controlled voltage generation circuit 241 output this second common electric voltage Vcom2 and is loaded on public electrode 114a corresponding to the sub-touch-control sensing of this j region Sj by public electrode wire GLj1 ~ GLjx, this touch-control sensing electrode 132a coordinates with this public electrode 114a and makes sense capacitance Ct form electric field, thus sensing touch operation.
See also Figure 19 and Figure 21, Figure 21 be on this touch-control display panel 10 sub-touch display area S at the driving schematic diagram of i+1 horizontal drive cycle T i+1, at this i+1 horizontal drive cycle T i+1, gate drivers 22 under the control of grid control signal GCS by gate lines G Lj1 ~ GLjx sequential delivery signal GS1 ~ GSx to this thin film transistor (TFT) 15 corresponding in the sub-touch display area Sj of this j, with select progressively and start the plurality of thin film transistor (TFT) 15. Source electrode driver 23 is loaded on this pixel electrode 112a by source electrode line SL1 ~ Sly by this image information DATA under the control of source control signal SCS. Simultaneously, control circuit 243 is controlled voltage generation circuit 241 this first common electric voltage of output Vcom1, and be loaded on the public electrode 114a of the sub-touch display area Sj of j by public electrode wire CLj1 ~ CLjx, thus, this pixel electrode 112a coordinate with public electrode 114a make liquid crystal capacitance LC form electric field, drive angle corresponding to liquid crystal layer molecule deflection, and then correspondence shows this image information DATA at the sub-touch display area Sj of this j.
Meanwhile, control circuit 243 is controlled voltage generation circuit 241 and is exported the second common electric voltage Vcom2, and be loaded on the public electrode 114a of j-1 touch display area Sj-1 by corresponding public electrode wire GL (j-1) 1 ~ GL (j-1) x, this touch-control sensing electrode 132a coordinates formation electric field with this public electrode 114a, thereby correspondence operates at this j-1 touch display area Sj-1 sensing touch.
The like, the first common electric voltage Vcom1 is loaded on other touch display area S corresponding in touch-control display panel 10 with the second common electric voltage Vcom2 successively according to aforementioned manner, does not repeat them here.
Compared to prior art, on this embedded touch display device 1, the second common electric voltage Vcom1 that different sub-touch-control sensing region S the first common electric voltage Vcom1 that loaded and displayed is used simultaneously and touch-control are used, embedded touch display device 1 epigraph is shown from sensing touch operation can carry out at the horizontal touch sensitive areas S of different sons simultaneously, thus, this embedded touch display device 1 is without display time interval and the timesharing of touch-control period are carried out, make each sub-touch-display unit can utilize time showing image or the sensing touch operation in a complete horizontal drive cycle, effectively improve the charging interval of pixel electrode 112a in sub-touch-control sensing region S, and then improve the image display resolution of this embedded touch display device 1.
Certainly, the present invention is not limited to above-mentioned disclosed embodiment, and the present invention carries out various changes to above-described embodiment. The art personnel are appreciated that as long as in connotation scope of the present invention, the appropriate change that above embodiment is done and changing all drop on the scope of protection of present invention in.
Claims (11)
1. the driving method of an embedded touch display device, this embedded touch display device comprises touch-control display panel and public voltage generating circuit, this public voltage generating circuit is for generation of the first common electric voltage and second common electric voltage of two different wave, this touch-control display panel comprises continuous and nonoverlapping 1st ~ n sub-touch display area in position, n is greater than 1 natural number, in each sub-touch display area, be provided with multiple pixel electrodes, multiple public electrodes and multiple touch-control sensing electrode, this pixel electrode is for receiving image information to be shown, this public electrode is used for loading this first common electric voltage and the second common electric voltage, it is characterized in that, this driving method comprises:
Load successively the first common electric voltage this public electrode to the sub-touch display area of 1st ~ n along first direction, this public electrode coordinates this pixel electrode to show this image information;
Meanwhile, load successively the second common electric voltage this public electrode to the sub-touch display area of 1st ~ n along second direction, this touch-control sensing electrode coordinates sensing touch operation with this public electrode, and exports corresponding sensing signal;
Wherein, in the time that wish loads sub-touch display area that the sub-touch display area of this first common electric voltage and wish load this second common electric voltage and is overlapped in the sub-touch display area of j, this public electrode of the sub-touch display area of this j suspends this first common electric voltage of loading, and only load this second common electric voltage, n is greater than 1 integer, 1≤j≤n.
2. the driving method of embedded touch display device as claimed in claim 1, it is characterized in that, one horizontal drive signals is provided, this horizontal drive signals comprises multiple horizontal drive cycles, and the time span in this horizontal drive cycle is the time that a sub-touch display area loads this picture signal in the horizontal direction;
In the i horizontal drive cycle, when wish loads sub-touch display area that the sub-touch display area of this first common electric voltage and wish load this second common electric voltage and is overlapped in the sub-touch display area of j, this public electrode of the sub-touch display area of this j suspends this first common electric voltage of loading, and only loads this second common electric voltage;
In the i+1 horizontal drive cycle, the sub-touch display area of this j loads this first common electric voltage, and this j+1 or j-1 touch display area load the second common electric voltage, and i is greater than 1 integer.
3. the driving method of embedded touch display device as claimed in claim 2, is characterized in that, this first direction is the positional alignment direction according to the sub-touch display area of 1st～n; This second direction is also the positional alignment direction according to the sub-touch display area of 1st～n.
4. the driving method of embedded touch display device as claimed in claim 3, is characterized in that, the frequency that loads this first common electric voltage is less than the frequency that loads this second common electric voltage.
5. the driving method of embedded touch display device as claimed in claim 4, it is characterized in that, the frequency that this sub-touch display area loads this first common electric voltage is greater than or equal to 60Hz, and the frequency that this sub-touch display area loads this second common electric voltage is greater than or equal to 60Hz.
6. the driving method of embedded touch display device as claimed in claim 2, is characterized in that, this first direction is the positional alignment direction according to the sub-touch display area of 1st～n; This second direction is also the positional alignment direction according to the sub-touch display area in n～1.
7. the driving method of embedded touch display device as claimed in claim 6, is characterized in that, the frequency that this sub-touch display area loads this first common electric voltage is identical with the frequency that this sub-touch display area loads this second common electric voltage.
8. the driving method of embedded touch display device as claimed in claim 7, is characterized in that, the frequency that loads this first common electric voltage is 60Hz.
9. the driving method of embedded touch display device as claimed in claim 1, is characterized in that, this first common electric voltage is the DC voltage with the first magnitude of voltage, and this second common electric voltage is the alternating voltage of the first magnitude of voltage and second voltage value checker.
10. an embedded touch display device, comprising:
Touch-control display panel, this touch-control display panel comprises 1st ~ n touch display area, in each touch display area, comprises:
Multiple pixel electrodes, for receiving image information to be shown;
Multiple public electrodes, the plurality of public electrode is used for loading this first common electric voltage or this second common electric voltage; And
Multiple touch-control electrodes, for coordinate sensing touch operation with this public electrode, and export corresponding sensing signal;
It is characterized in that, this embedded touch display device further comprises public voltage generating circuit, this public voltage generating circuit is for generation of the first common electric voltage and second common electric voltage of at least two different wave, and load successively the first common electric voltage this public electrode to the sub-touch display area of 1st ~ n along first direction, this public electrode coordinates this pixel electrode to show this image information; Meanwhile, load successively the second common electric voltage this public electrode to the sub-touch display area of 1st ~ n along second direction, this touch-control sensing electrode coordinates sensing touch operation with this public electrode, and exports corresponding sensing signal; In the time that wish loads sub-touch display area that the sub-touch display area of this first common electric voltage and wish load this second common electric voltage and is overlapped in the sub-touch display area of j, this public electrode of the sub-touch display area of this j suspends this first common electric voltage of loading, and only load this second common electric voltage, n is greater than 1 integer, 1≤j≤n.
11. embedded touch display devices as claimed in claim 10, it is characterized in that, this public voltage generating circuit comprises control circuit and voltage generation circuit, this voltage generation circuit is for generation of this first common electric voltage and this second common electric voltage, and this control circuit touch display area corresponding to this first common electric voltage exports to this second common electric voltage for controlling this voltage generation circuit.
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