CN203178998U - Capacitive in cell touch panel and display device - Google Patents
Capacitive in cell touch panel and display device Download PDFInfo
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- CN203178998U CN203178998U CN 201320168559 CN201320168559U CN203178998U CN 203178998 U CN203178998 U CN 203178998U CN 201320168559 CN201320168559 CN 201320168559 CN 201320168559 U CN201320168559 U CN 201320168559U CN 203178998 U CN203178998 U CN 203178998U
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Abstract
The utility model discloses a capacitive in cell touch panel and a display device. A common electrode layer connected onto the whole surface in an array substrate is divided into touch driven electrodes and common electrodes, which are mutually insulated and arranged in a crossed way; touch sensing electrodes are arranged on an upper substrate and perform time-sharing drive on the touch driven electrodes to realize touch and display functions; the projection of the touch sensing electrodes on the array substrate is arranged in an area where the common electrodes are positioned, so that the right-opposite surfaces of the touch sensing electrodes and the touch driven electrodes can be reduced, and the opposite capacitance is reduced; and sides of the touch driven electrodes and the sides, opposite to the sides of the touch driven electrodes, of the common electrodes are set to be in a broken line, and the shapes of the touch sensing electrodes and the common electrodes are set to be consistent, so that the opposite surfaces of the touch driven electrodes and the touch sensing electrodes can be increased, and the projection capacitance in a unit area is increased. By improving a ratio of the projection capacitance to the right-opposite capacitance, the ratio of mutual capacitance variation caused by finger touch can be increased, and the touch accuracy is improved.
Description
Technical field
The utility model relates to the display technique field, relates in particular to the embedded touch-screen of a kind of condenser type and display device.
Background technology
Along with the develop rapidly of display technique, touch-screen (Touch Screen Panel) spreads all in people's the life gradually.At present, touch-screen can be divided into according to forming structure: external hanging type touch-screen (Add on Mode Touch Panel), covering surfaces formula touch-screen (On Cell Touch Panel) and embedded touch-screen (In Cell Touch Panel).Wherein, the external hanging type touch-screen is with touch-screen and LCDs (Liquid Crystal Display, LCD) separately produce, fitting to then becomes the LCDs with touch function together, and there are shortcomings such as cost of manufacture is higher, light transmission rate is lower, module is thicker in the external hanging type touch-screen.And embedded touch-screen is embedded in LCDs inside with the touch-control electrode of touch-screen, and thickness that can attenuate module integral body can reduce the cost of manufacture of touch-screen again greatly, is subjected to each big panel producer favor.
At present, existing condenser type embedded (in cell) touch-screen is at existing TFT(Thin Film Transistor, what Thin Film Transistor (TFT)) direct increase touch-control drive electrode in addition and touch-control sensing electrode were realized on the array base palte, namely make the strip ITO electrode that two-layer mutual antarafacial intersects on the surface of tft array substrate, this two-layer ITO(Indium Tin Oxides, indium tin metal oxide) electrode is respectively as touch-control drive electrode and the touch-control sensing electrode of touch-screen, as shown in Figure 1, coupling produces mutual capacitance C between the touch-control sensing electrode Rx of the touch-control drive electrode Tx of horizontally set and vertically setting
m(Mutual Capacitance), when the finger touches screen, the touching of finger can change mutual capacitance C
mValue, touch detecting apparatus is by detecting capacitor C before and after the finger touches
mThe change amount of corresponding electric current, thus detect the position of finger touch point.
As shown in Figure 1, between the touch-control drive electrode Tx of horizontally set and the touch-control sensing electrode Rx that vertically arranges, can form two kinds of mutual capacitance C
m, a kind of is to realizing the effective projected capacitive of touch function (curve of band arrow is projected capacitive among Fig. 1), during the finger touches screen, can changing the projected capacitive value; Another kind be to realize touch function invalid over against electric capacity (straight line of band arrow for over against electric capacity).When touch-control drive electrode and touch-control sensing electrode right opposite in the vertical direction are excessive, what form at this right opposite place can be excessive with respect to projected capacitive over against electric capacity, it is bigger to cause touch detecting apparatus to detect initial value, the weak output signal that can't accurately detect projected capacitive behind the finger touches touch-screen changes, make the signal to noise ratio (S/N ratio) of touch-screen reduce, influenced the accuracy of touch-control sensing in the embedded touch-screen.
The utility model content
The utility model embodiment provides the embedded touch-screen of a kind of condenser type and display device, in order to solve the lower problem of accuracy of touch-control sensing in the existing embedded touch-screen.
The embedded touch-screen of a kind of condenser type that the utility model embodiment provides comprises: upper substrate, and the array base palte with common electrode layer, and the liquid crystal layer between described upper substrate and described array base palte,
The common electrode layer of described array base palte is made up of a plurality of touch-control drive electrodes and a plurality of public electrode of mutually insulated, described touch-control drive electrode and public electrode are arranged in a crossed manner, and the side of the side of described touch-control drive electrode and relative described public electrode is broken line; In the demonstration time of a frame picture, each described touch-control drive electrode timesharing ground loads common electrode signal and touch scanning signals;
Described upper substrate has a plurality of touch-control sensing electrodes, and each described touch-control sensing electrode orthogonal projection on described array base palte is positioned at described public electrode region, and each described touch-control sensing electrode is consistent with the shape of described public electrode region.
A kind of display device that the utility model embodiment provides comprises the embedded touch-screen of condenser type that the utility model embodiment provides.
The beneficial effect of the utility model embodiment comprises:
The embedded touch-screen of a kind of condenser type and display device that the utility model embodiment provides, the common electrode layer of whole connection in the array base palte is cut apart, form mutually insulated and touch-control drive electrode and public electrode arranged in a crossed manner, at upper substrate the touch-control sensing electrode is set, the touch-control drive electrode is carried out timesharing drive, to realize touch controllable function and Presentation Function.Because in the touch-screen that the utility model embodiment provides, the projection of touch-control sensing electrode on array base palte is positioned at the zone at public electrode place, and public electrode and touch-control drive electrode are positioned at layer and mutually insulated, like this, can reduce the right opposite between touch-control sensing electrode and the touch-control drive electrode effectively, thus reduce form at this right opposite place over against electric capacity; And, the side of the side of touch-control drive electrode and relative public electrode all is set to broken line, and each touch-control sensing electrode is set to consistent with the shape of public electrode region, can increase adjacent touch-control drive electrode and the opposite face between the touch-control sensing electrode like this, thereby increase the projected capacitive between the interior touch-control drive electrode of unit area and the touch-control sensing electrode.By improving projected capacitive relatively over against the ratio of electric capacity, can increase the ratio of the mutual capacitance variable quantity that is caused by finger touch, promoted the touch-control accuracy.
Description of drawings
The electric capacity synoptic diagram of Fig. 1 for producing between existing touch-control drive electrode and the touch-control sensing electrode;
The structural representation of the embedded touch-screen of condenser type that Fig. 2 provides for the utility model embodiment;
The driving sequential synoptic diagram of the embedded touch-screen of condenser type that Fig. 3 provides for the utility model embodiment;
One of schematic top plan view of array base palte in the embedded touch-screen of condenser type that Fig. 4 provides for the utility model embodiment;
In the embedded touch-screen of condenser type that Fig. 5 provides for the utility model embodiment two of the schematic top plan view of array base palte;
In the embedded touch-screen of condenser type that Fig. 6 provides for the utility model embodiment three of the schematic top plan view of array base palte;
The perspective view of touch-control sensing electrode on array base palte in the embedded touch-screen of condenser type that Fig. 7 provides for the utility model embodiment;
Fig. 8 a and Fig. 8 b are respectively the vertical view of upper substrate in the embedded touch-screen of condenser type that the utility model embodiment provides.
Embodiment
At present, the lcd technology that can realize wide visual angle mainly contains plane internal switch (IPS, In-Plane Switch) technology and senior super dimension field switch (ADS, Advanced Super Dimension Switch) technology; Wherein, the electric field that the electric field that the ADS technology produces by gap electrode edge in the same plane and gap electrode layer and plate electrode interlayer produce forms multi-dimensional electric field, make in the liquid crystal cell between gap electrode, all aligned liquid-crystal molecules can both produce rotation directly over the electrode, thereby improved the liquid crystal work efficiency and increased light transmission efficiency.A senior super dimension switch technology can improve the picture quality of TFT-LCD product, has high resolving power, high permeability, low-power consumption, wide visual angle, high aperture, low aberration, no water of compaction ripple advantages such as (push Mura).H-ADS(high aperture-senior super dimension field switch) be a kind of important implementation of ADS technology.
The utility model embodiment just is being based on the ADS technology and the H-ADS technology has proposed the embedded touch screen structure of a kind of new condenser type.Below in conjunction with accompanying drawing, the embedded touch-screen of condenser type that the utility model embodiment is provided and the embodiment of display device are described in detail.
Below in conjunction with accompanying drawing, the embedded touch-screen of condenser type that the utility model embodiment is provided and the embodiment of display device are described in detail.
Each layer film thickness and shape do not reflect the true ratio of array base palte or upper substrate in the accompanying drawing, and purpose is illustrative the utility model content.
The horizontal section synoptic diagram of the embedded touch-screen of condenser type that Fig. 2 provides for the utility model embodiment.As shown in Figure 2, the embedded touch-screen of the condenser type that the utility model embodiment provides specifically comprises: upper substrate 1, the array base palte 2 with common electrode layer, and the liquid crystal layer 3 between upper substrate 1 and array base palte 2;
The common electrode layer of array base palte 2 is made up of a plurality of touch-control drive electrodes 4 and a plurality of public electrode 5 of mutually insulated, touch-control drive electrode 4 is arranged in a crossed manner with public electrode 5, and the side of the side of touch-control drive electrode 4 and relative public electrode 5 is broken line (not shown among Fig. 2); In the demonstration time of a frame picture, each touch-control drive electrode 4 timesharing ground loads common electrode signal and touch scanning signals;
The embedded touch-screen of above-mentioned condenser type that the utility model embodiment provides, the projection of touch-control sensing electrode on array base palte is arranged in the zone at public electrode place, and public electrode and touch-control drive electrode are positioned at layer and mutually insulated, like this, can reduce the right opposite between touch-control sensing electrode and the touch-control drive electrode effectively, thus reduce form at this right opposite place over against electric capacity; And, the side of the side of touch-control drive electrode and relative public electrode all is set to broken line, and each touch-control sensing electrode is set to consistent with the shape of public electrode region, can increase adjacent touch-control drive electrode and the opposite face between the touch-control sensing electrode like this, thereby increase the projected capacitive between the interior touch-control drive electrode of unit area and the touch-control sensing electrode.By improving projected capacitive relatively over against the ratio of electric capacity, can increase the ratio of the mutual capacitance variable quantity that is caused by finger touch, promoted the touch-control accuracy.
And, because in the above-mentioned touch-screen that the utility model embodiment provides, the mode that touch-control and demonstration stage adopt timesharing to drive can integrate the chip of display driver and touch-control driving on the one hand, further reduces production costs; Timesharing drives and also can reduce the mutual interference mutually that shows with touch-control on the other hand, improves picture quality and touch-control accuracy.
Particularly, for example: in the driving sequential chart as shown in Figure 3, touch-screen is shown that the time of each frame (V-sync) is divided into demonstration time period (Display) and touch-control time period (Touch), for example the time of demonstration one frame of touch-screen is 16.7ms in the driving sequential chart shown in Figure 3, choose wherein 5ms as the touch-control time period, other 11.7ms is as showing the time period, and can certainly be according to the processing power of IC chip suitable both durations of adjustment are not done concrete restriction at this.Showing the time period (Display), to every in touch-screen signal line Gate1, Gate2 ... Gate n applies scanning gate signal successively, data signal line Data is applied the GTG signal, correspondingly this moment, the touch-control drive electrode was as public electrode, the IC chip that is connected with the touch-control drive electrode provides constant common electrode signal to it, realizes the liquid crystal display function.At touch-control time period (Touch), the IC chip that is connected with the touch-control drive electrode provides touch scanning signals T1, T2 respectively to each touch-control drive electrode ... Tn, each touch-control sensing electrode is detected touch-control sensing signal R1, R2 respectively simultaneously ... Rn realizes touch controllable function.In the touch-control time period, every signal line in the touch-screen and the input of data signal line no signal.And, each public electrode in common electrode layer is showing that time period and touch-control time period load common electrode signal all the time, perhaps, showing that the time period loads common electrode signal to each public electrode, in each public electrode ground connection of touch-control time period or unsettled processing, this unsettled processing refers to the no signal input.
In the specific implementation, all be formed with a plurality of pixel cells that are the matrix arrangement in the general embedded touch-screen of condenser type, preferably, generally the line direction of each touch-control drive electrode 4 along pixel cell extended; Each touch-control sensing electrode 6 and each public electrode 5 extend along the column direction of pixel cell; Can certainly be according to the size of application device, change both wiring directions, be about to each touch-control drive electrode 4 and be set to extend along the column direction of pixel cell, each touch-control sensing electrode 6 and each public electrode 5 are set to extend along the line direction of pixel cell, do not do restriction at this.
All be to extend along the line direction of pixel cell with each touch-control drive electrode 4 below, each touch-control sensing electrode 6 and each public electrode 5 extend to example along the column direction of pixel cell and describe.
Below the concrete structure of realizing the touch-control drive electrode of touch controllable function in the above-mentioned touch-screen is described in detail.
Particularly, because mutually insulated and constitute common electrode layer jointly between touch-control drive electrode 4 and the public electrode 5; Therefore, when the specific design common electrode layer, as shown in Figure 4, each public electrode 5 can be set to strip shaped electric poles, each public electrode 5 extends along the column direction of pixel cell; Each touch-control drive electrode 4 extends along the line direction of pixel cell, and each touch-control drive electrode 4 is divided into the touch-control driven element electrode 41 that a plurality of colleagues arrange, the gap location of each touch-control driven element electrode 41 between adjacent public electrode 5.A touch-control drive electrode Tx1 for example has been shown among Fig. 4 has been made of 5 touch-control driven element electrodes 41, same Tx2 and Tx3 also are made of 5 touch-control driven element electrodes.
And, in the touch-screen that the utility model embodiment provides, the side of touch-control drive electrode 4 and the side of relative public electrode 5 are the situation of broken line, in the specific implementation can be as shown in Figure 4, the side of the side of touch-control drive electrode 4 and relative public electrode 5 all has concavo-convex structure, the consistent and mutual coupling of two concavo-convex planforms; Perhaps, also can be as shown in Figure 5, the side of the side of touch-control drive electrode 4 and relative public electrode 5 all has step structure, the consistent and mutual coupling of two step structure shapes.And in the specific implementation, the broken line structure that can also have side is the combination of concavo-convex structure and step structure, certainly, also can design the shape of broken line according to actual needs, does not do restriction at this.
Certainly, when the specific design common electrode layer, also can be set to along the strip shaped electric poles of the line direction extension of pixel cell by each touch-control drive electrode; Public electrode is set to extend along the column direction of pixel cell, and each public electrode is divided into the public sub-electrode that a plurality of same columns arrange, and each public sub-electrode is positioned at adjacent touch-control driven element gaps between electrodes place.At this moment, in order to guarantee do not have over against area between touch-control sensing electrode and the touch-control drive electrode, corresponding touch-control sensing electrode with each public electrode also will be made up of the touch-control sensing sub-electrode that a plurality of same columns arrange.
Particularly, in the common electrode layer design as shown in Figure 4, can also have many touch-control drive signal lines 7 between adjacent pixel unit in array base palte, each touch-control driven element electrode 41 of each touch-control drive electrode 4 is electrical connected by at least one touch-control drive signal line 7.In the specific implementation, each touch-control drive signal line 7 generally extends along the line direction of pixel cell, i.e. the gap location of each touch-control drive signal line 7 between the pixel cell of adjacent lines.
Preferably, in the specific implementation, each touch-control drive signal line 7 can with array base palte in the signal line arrange with layer; Each touch-control drive signal line 7 is electrical connected with corresponding each touch-control driven element electrode 51 by at least one via hole, like this, when the preparation array base palte, do not need to increase extra preparation section, only need can form the figure of touch-control drive signal line 7 and signal line by a composition technology, can save preparation cost, promote added value of product.
Further, because common electrode layer is generally made by the ITO material, and the resistance of ITO material is higher, after being electrical connected with each touch-control drive electrode 4 by the touch-control drive signal line 7 of metal preparation, be equivalent to ITO electrode and a plurality of metallic resistance parallel connection of being formed by the touch-control drive signal line, can reduce the resistance of touch-control drive electrode so to greatest extent, thus the signal to noise ratio (S/N ratio) when improving the electrodes transfer signal.
Particularly, can also have many common electrode signal lines 8 between adjacent pixel unit in array base palte, each public electrode 5 is electrical connected with common electrode signal line 8, provides common electrode signal by common electrode signal line 8 to each public electrode.In the specific implementation, each common electrode signal line 8 generally extends along line directions of pixel cell, as shown in Figure 4, i.e. and the gap location of each common electrode signal line 8 between the pixel cell of adjacent lines; Certainly, each common electrode signal line 8 can also extend along the column direction of pixel cell, and namely each common electrode signal line 8 runs through corresponding public electrode 5, does not specifically limit the bearing of trend of common electrode signal line 8 at this.
Preferably, when each common electrode signal line 8 extends along the line direction of pixel cell, each common electrode signal line 8 and signal line in the array base palte can be arranged with layer; Each common electrode signal line 8 is electrical connected with corresponding each public electrode 5 by at least one via hole.When each common electrode signal line 8 extends along the column direction of pixel cell, each common electrode signal line 8 and data signal line in the array base palte can be arranged with layer; Each common electrode signal line 8 is electrical connected with corresponding each public electrode 5 by at least one via hole.Like this, when the preparation array base palte, do not need to increase extra preparation section, only need can form the figure of common electrode signal line 8 and signal line or data signal line by a composition technology, can save preparation cost, promote added value of product.
Further, because common electrode layer is generally made by the ITO material, and the resistance of ITO material is higher, after being electrical connected with each public electrode 5 by the common electrode signal line 8 of metal preparation, be equivalent to ITO electrode and a plurality of metallic resistance parallel connection of being formed by the common electrode signal line, can reduce common electrode resistance to greatest extent like this, thus the signal to noise ratio (S/N ratio) when improving the electrodes transfer signal.
Preferably, for can be at the aperture opening ratio that guarantees large-sized touch display screen to greatest extent, dot structure in the array base palte of the touch-screen that the utility model embodiment provides can adopt structure as shown in Figure 6 in the specific implementation, in this structure, be a pixel cell group with the every adjacent two row pixel cells in the array base palte, having delegation that two signal lines are respectively these two row pixel cells between pixel cell at this two row provides the gated sweep signal, for example the Gate1 among Fig. 6 and Gate2.Can correspondingly can reduce the area be used to the black matrix that blocks TFT switch and grid line like this with the TFT switch designs in these adjacent two row pixel cells together, help to improve the aperture opening ratio of touch display screen.
Further, the dot structure of above-mentioned Fig. 6 can save the position of signal line between the adjacent pixel unit group by the signal line of the adjacent two row pixel cells of change and the position of TFT switch.Like this, as shown in Figure 6, just can each touch-control drive signal line 7 and each common electrode signal line (not shown among Fig. 6) be set the gap location between the adjacent pixel unit group, be the specifically gap location between the adjacent unit pixel group of each touch-control drive signal line 7, each common electrode signal line is the gap location between the adjacent pixel unit group except being provided with touch-control drive signal line 7 specifically.
Below the concrete structure of realizing the touch-control sensing electrode of touch controllable function in the above-mentioned touch-screen is described in detail.
In the specific implementation, the touch-control sensing electrode can also can be positioned at the black matrix area of upper substrate towards the one side of liquid crystal layer between the underlay substrate and black matrix area of upper substrate.
Particularly, the position of touch-control sensing electrode is corresponding with the position of public electrode, can reduce the right opposite between touch-control sensing electrode and the touch-control drive electrode like this.In the specific implementation, because the precision of touch-screen is usually in the millimeter level, and the precision of LCDs shows as can be seen that usually at micron order required precision is far longer than the required precision of touch-control, therefore, general every touch-control sensing electrode and every public electrode all can corresponding multirow pixel cells.And, can be according to the touch-control precision of concrete needs, each bar touch-control sensing gaps between electrodes is set, only need namely to guarantee that each touch-control sensing electrode projection on array base palte is positioned at the public electrode region and gets final product, the width of each touch-control sensing electrode generally is not more than the width of public electrode, the at interval at least one public electrode setting of each touch-control sensing electrode, also can the touch-control sensing electrode and public electrode be set to concern one to one, do not do restriction at this.
And in the specific implementation, each touch-control sensing electrode is consistent with the shape of public electrode region, and the size of each orthogonal projection of touch-control sensing electrode on array base palte can equal the size of the public electrode region of correspondence; In order further to improve the signal to noise ratio (S/N ratio) of touch-screen, can also be as shown in Figure 7, the orthogonal projection of touch-control sensing electrode 6 on array base palte is set to the size less than public electrode 5 regions of correspondence, shown in each bar touch-control sensing electrode Rx1, Rx2, Rx3 among Fig. 7, can draw by the analog computation result, under this kind structure, can increase the ratio of the mutual capacitance variable quantity that is caused by finger touch effectively, promote the touch-control accuracy.
And, in the specific implementation, each bar touch-control sensing electrode 6 can be designed to have planar electrode structure.Further, because the spacing between touch-control sensing electrode and the touch-control drive electrode is less, in order to guarantee that coupling capacitance improves the feasibility of touch-control in suitable scope, shown in Fig. 8 a and Fig. 8 b, each bar touch-control sensing electrode 6 can be designed to have the grid electrode structure, and the pattern of each touch-control sensing electrode is deceived matrix area and is covered, so just can utilize black matrix to hide the fenestral fabric of touch-control sensing electrode, can the aperture opening ratio of display not exerted an influence, can not influence the light transmission rate of display yet.Particularly, the mesh size of the grid electrode structure of each touch-control sensing electrode can be determined according to concrete needs, for example, can be set to shown in Fig. 8 a, be that the pattern of touch-control sensing electrode 6 is positioned at the gap location between each sub-pix unit (RGB) of forming pixel cell, can be set to shown in Fig. 8 b, namely the pattern of touch-control sensing electrode 6 gap location between pixel cell is not only done restriction at this yet.
Particularly, because the touch-control sensing electrode of the fenestral fabric that arranges at upper substrate can the occluded pixels unit, therefore, the material of touch-control sensing electrode can be specially transparent conductive material for example ITO or IZO, also metal material can be, when adopting metal material to make the touch-control sensing electrode, its resistance can be effectively reduced.
Preferably, in the above-mentioned touch-screen that the utility model embodiment provides, during with cabling that the touch-control sensing electrode is connected, can adopt monolateral cabling or bilateral cabling at non-display area setting and touch-control drive electrode, not do restriction at this.
Based on same utility model design, the utility model embodiment also provides a kind of display device, comprise the embedded touch-screen of above-mentioned condenser type that the utility model embodiment provides, the enforcement of this display device can repeat part and repeat no more referring to the embodiment of the embedded touch-screen of above-mentioned condenser type.
The embedded touch-screen of a kind of condenser type and display device that the utility model embodiment provides, the common electrode layer of whole connection in the array base palte is cut apart, form mutually insulated and touch-control drive electrode and public electrode arranged in a crossed manner, at upper substrate the touch-control sensing electrode is set, the touch-control drive electrode is carried out timesharing drive, to realize touch controllable function and Presentation Function.Because in the touch-screen that the utility model embodiment provides, the projection of touch-control sensing electrode on array base palte is positioned at the zone at public electrode place, and public electrode and touch-control drive electrode are positioned at layer and mutually insulated, like this, can reduce the right opposite between touch-control sensing electrode and the touch-control drive electrode effectively, thus reduce form at this right opposite place over against electric capacity; And, the side of the side of touch-control drive electrode and relative public electrode all is set to broken line, and each touch-control sensing electrode is set to consistent with the shape of public electrode region, can increase adjacent touch-control drive electrode and the opposite face between the touch-control sensing electrode like this, thereby increase the projected capacitive between the interior touch-control drive electrode of unit area and the touch-control sensing electrode.By improving projected capacitive relatively over against the ratio of electric capacity, can increase the ratio of the mutual capacitance variable quantity that is caused by finger touch, promoted the touch-control accuracy.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (14)
1. embedded touch-screen of condenser type comprises: upper substrate, and the array base palte with common electrode layer, and the liquid crystal layer between described upper substrate and described array base palte is characterized in that,
The common electrode layer of described array base palte is made up of a plurality of touch-control drive electrodes and a plurality of public electrode of mutually insulated, described touch-control drive electrode and public electrode are arranged in a crossed manner, and the side of the side of described touch-control drive electrode and relative described public electrode is broken line; In the demonstration time of a frame picture, each described touch-control drive electrode timesharing ground loads common electrode signal and touch scanning signals;
Described upper substrate has a plurality of touch-control sensing electrodes, and each described touch-control sensing electrode orthogonal projection on described array base palte is positioned at described public electrode region, and each described touch-control sensing electrode is consistent with the shape of described public electrode region.
2. touch-screen as claimed in claim 1 is characterized in that, the side of the side of described touch-control drive electrode and relative described public electrode all has step structure, the consistent and mutual coupling of two step structure shapes; And/or,
The side of the side of described touch-control drive electrode and relative described public electrode all has concavo-convex structure, the consistent and mutual coupling of two concavo-convex planforms.
3. touch-screen as claimed in claim 1 is characterized in that, each described touch-control sensing electrode orthogonal projection on described array base palte is less than the size of the public electrode region of correspondence.
4. touch-screen as claimed in claim 1 is characterized in that, is formed with in the embedded touch-screen of described condenser type to be a plurality of pixel cells that matrix is arranged; Each described touch-control drive electrode extends along the line direction of pixel cell; Each described touch-control sensing electrode and each public electrode extend along the column direction of pixel cell.
5. touch-screen as claimed in claim 4, it is characterized in that, each public electrode is strip shaped electric poles, and each described touch-control drive electrode comprises the touch-control driven element electrode that a plurality of colleagues arrange, the gap location of each described touch-control driven element electrode between adjacent public electrode.
6. touch-screen as claimed in claim 5, it is characterized in that, have many touch-control drive signal lines between adjacent pixel unit in the described array base palte, each touch-control driven element electrode of described touch-control drive electrode is electrical connected by at least one touch-control drive signal line.
7. touch-screen as claimed in claim 6 is characterized in that, has many common electrode signal lines between adjacent pixel unit in the described array base palte, and each described public electrode and common electrode signal line are electrical connected.
8. touch-screen as claimed in claim 7, it is characterized in that, be a pixel cell group with every two adjacent row pixel cells in described array base palte, having delegation that two signal lines are respectively these two row pixel cells between this two row pixel cell provides the gated sweep signal.
9. touch-screen as claimed in claim 8, it is characterized in that, each described touch-control drive signal line is the gap location between the adjacent unit pixel group specifically, and each common electrode signal line is the gap location between the adjacent pixel unit group except being provided with described touch-control drive signal line specifically.
10. touch-screen as claimed in claim 9 is characterized in that, the signal line in each described touch-control drive signal line and each described common electrode signal line and the described array base palte arranges with layer; Each described touch-control drive signal line is electrical connected with corresponding each touch-control driven element electrode by at least one via hole; Each described common electrode signal line is electrical connected with corresponding each public electrode by at least one via hole.
11., it is characterized in that each described touch-control sensing electrode is positioned at the black matrix area of described upper substrate towards the one side of liquid crystal layer as each described touch-screen of claim 1-10.
12. touch-screen as claimed in claim 11 is characterized in that, each described touch-control sensing electrode has the grid electrode structure, and the grid electrode structure of described touch-control sensing electrode is covered by described black matrix area.
13. touch-screen as claimed in claim 12 is characterized in that, the material of each described touch-control sensing electrode is transparent conductive material or metal material.
14. a display device is characterized in that, comprises as the embedded touch-screen of each described condenser type of claim 1-13.
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| CN 201320168559 CN203178998U (en) | 2013-04-07 | 2013-04-07 | Capacitive in cell touch panel and display device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218097A (en) * | 2013-04-07 | 2013-07-24 | 北京京东方光电科技有限公司 | Capacitive embedded touch screen and display device |
| CN103677411A (en) * | 2013-12-06 | 2014-03-26 | 京东方科技集团股份有限公司 | Touch display device and manufacture method thereof |
| CN103838431A (en) * | 2014-02-24 | 2014-06-04 | 北京京东方光电科技有限公司 | Embedded type touch screen and display device |
| CN103995632A (en) * | 2014-04-29 | 2014-08-20 | 京东方科技集团股份有限公司 | Touch screen and touch display device |
| CN103995636A (en) * | 2014-05-30 | 2014-08-20 | 重庆墨希科技有限公司 | Capacitive touch screen |
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