CN103049157B - A kind of capacitance type in-cell touch panel and display device - Google Patents
A kind of capacitance type in-cell touch panel and display device Download PDFInfo
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- CN103049157B CN103049157B CN201210546692.0A CN201210546692A CN103049157B CN 103049157 B CN103049157 B CN 103049157B CN 201210546692 A CN201210546692 A CN 201210546692A CN 103049157 B CN103049157 B CN 103049157B
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Abstract
The invention discloses a kind of capacitance type in-cell touch panel and display device, the common electrode layer that in tft array substrate whole connects is split, form mutually insulated and touch-control drive electrode arranged in a crossed manner and public electrode, color membrane substrates arranges touch-control sensing electrode, touch-control drive electrode is carried out timesharing driving, to realize touch controllable function and display function.Due in the touch screen that the embodiment of the present invention provides, the projection on tft array substrate of the touch-control sensing electrode is positioned at the region at public electrode place, and public electrode and touch-control drive electrode are positioned at same layer and mutually insulated, so, avoid generation right opposite between touch-control sensing electrode and touch-control drive electrode to amass, decrease and amassed the mutual capacitance formed by this right opposite, thus increase the ratio of the mutual capacitance variable quantity caused by finger touch, improve touch-control accuracy.Further, owing to using timesharing to drive touch-control and display function, it is also possible to reduce and interfere, improve picture quality.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of capacitance type in-cell touch panel and display device.
Background technology
Along with developing rapidly of Display Technique, touch screen (TouchScreenPanel) is the most gradually in the life of people.At present, touch screen can be divided into according to composition structure: external hanging type touch screen (AddonModeTouchPanel), covering surface-type touch screen (OnCellTouchPanel) and In-cell touch panel (InCellTouchPanel).Wherein, external hanging type touch screen is by touch screen and LCDs (LiquidCrystalDisplay, LCD) separately producing, then fit together into the LCDs with touch function, there is the shortcomings such as cost of manufacture is higher, light transmission rate is relatively low, module is thicker in external hanging type touch screen.And the touch control electrode of touch screen is embedded in inside LCDs by In-cell touch panel, can be substantially reduced again the cost of manufacture of touch screen with the overall thickness of thinning module, be favored by Ge great panel producer.
At present, existing Capacitance-type built-in (incell) touch screen is at existing TFT(ThinFilmTransistor, TFT) the most additionally increase touch-control scan line on array base palte and touch induction lines realizes, the stripe-like ITO electrodes that the mutual antarafacial of two-layer intersects i.e. is made on the surface of tft array substrate, this two-layer ITO(IndiumTinOxides, indium tin metal oxide) electrode drives line and touch induction lines respectively as the touch-control of touch screen, forms mutual capacitance in the antarafacial intersection of two ITO electrode.Its work process is: when the ITO electrode driving line as touch-control loading touch-control and driving signal, the voltage signal that detection touch induction lines is coupled out by mutual capacitance, in the process, when having human contact's touch screen, human body electric field will act in mutual capacitance, makes the capacitance of mutual capacitance change, and then changes the voltage signal that touch induction lines is coupled out, change according to voltage signal, it is possible to determine contact position.
Its equivalent circuit is as shown in Figure 1, signal source 101 drives line to apply touch-control driving signal to touch-control and drives the resistance 103 of line through touch-control, drive at touch-control and between line and touch induction lines, form mutual capacitance 102, the parasitic capacitance 104 of line, touch induction lines and public electrode interlayer is driven through touch-control, and the resistance 105 of touch induction lines, detected by the testing circuit 106 being connected with touch induction lines.When finger touches, some electric current flows into finger, is equivalent to touch-control and drives the mutual capacitance 102 between line and touch induction lines to change, and the testing circuit 106 in test side detects that weak current changes, to determine touch location.
During from above-mentioned equivalent circuit it can be seen that the mutual capacitance of generation is excessive between touch-control drive electrode and touch-control sensing electrode touch screen, the mutual capacitance variable quantity ratio caused by finger touch can be caused the least, cause the problem that touch-control is difficult to detection.
Summary of the invention
Embodiments provide a kind of capacitance type in-cell touch panel and display device, excessive in order to the mutual capacitance solving to produce between touch-control drive electrode and touch-control sensing electrode in existing In-cell touch panel, cause the problem that touch-control is difficult to detection.
A kind of capacitance type in-cell touch panel that the embodiment of the present invention provides, including: color membrane substrates, there is the thin film transistor (TFT) tft array substrate of common electrode layer, and the liquid crystal layer between described color membrane substrates and described tft array substrate,
The common electrode layer of described tft array substrate is made up of multiple touch-control drive electrodes and multiple public electrode of mutually insulated, and described touch-control drive electrode is arranged in a crossed manner with public electrode；Within the display time of a frame picture, each described touch-control drive electrode loads common electrode signal and touch scanning signals for timesharing ground；
Described color membrane substrates has multiple touch-control sensing electrode, and the projection on described tft array substrate of each described touch-control sensing electrode is positioned at described public electrode region.
A kind of display device that the embodiment of the present invention provides, the capacitance type in-cell touch panel provided including the embodiment of the present invention.
The beneficial effect of the embodiment of the present invention includes:
A kind of capacitance type in-cell touch panel of embodiment of the present invention offer and display device, the common electrode layer that in tft array substrate whole connects is split, form mutually insulated and touch-control drive electrode arranged in a crossed manner and public electrode, color membrane substrates arranges touch-control sensing electrode, the projection on tft array substrate of each touch-control sensing electrode is positioned at the region at public electrode place, touch-control drive electrode is carried out timesharing driving, to realize touch controllable function and display function.Due in the touch screen that the embodiment of the present invention provides, the projection on tft array substrate of the touch-control sensing electrode is positioned at the region at public electrode place, and public electrode and touch-control drive electrode are positioned at same layer and mutually insulated, so, avoid generation right opposite between touch-control sensing electrode and touch-control drive electrode to amass, decrease and amassed the mutual capacitance formed by this right opposite, thus increase the ratio of the mutual capacitance variable quantity caused by finger touch, improve touch-control accuracy.Further, owing to using timesharing to drive touch-control and display function, it is also possible to reduce and interfere, improve picture quality.
Accompanying drawing explanation
Fig. 1 is the schematic equivalent circuit of capacitance type in-cell touch panel in prior art；
The structural representation of the capacitance type in-cell touch panel that Fig. 2 provides for the embodiment of the present invention；
The driver' s timing schematic diagram of the capacitance type in-cell touch panel that Fig. 3 provides for the embodiment of the present invention；
One of top view of tft array substrate in the capacitance type in-cell touch panel that Fig. 4 provides for the embodiment of the present invention；
In the capacitance type in-cell touch panel that Fig. 5 provides for the embodiment of the present invention the two of the top view of tft array substrate；
The top view of color membrane substrates in the capacitance type in-cell touch panel that Fig. 6 a and Fig. 6 b provides for the embodiment of the present invention.
Detailed description of the invention
At present, it is possible to the lcd technology realizing wide viewing angle mainly has plane internal switch (IPS, In-PlaneSwitch) technology and senior super dimension field switch (ADS, AdvancedSuperDimensionSwitch) technology；Wherein, the electric field formation multi-dimensional electric field that ADS technology is produced with plate electrode interlayer by electric field produced by gap electrode edge in same plane and gap electrode layer, make in liquid crystal cell between gap electrode, directly over electrode, all aligned liquid-crystal molecules can produce rotation, thus improve liquid crystal work efficiency and increase light transmission efficiency.Senior super dimension field switch technology can improve the picture quality of TFT-LCD product, have high-resolution, high permeability, low-power consumption, wide viewing angle, high aperture, low aberration, without advantages such as water of compaction ripples (pushMura).H-ADS(high aperture-senior super dimension field switch) it is the important implementation of one of ADS technology.
The embodiment of the present invention is based on ADS technology and H-ADS technology proposes a kind of new capacitance type in-cell touch panel structure.Below in conjunction with the accompanying drawings, the capacitance type in-cell touch panel provided the embodiment of the present invention and the detailed description of the invention of display device are described in detail.
Below in conjunction with the accompanying drawings, the capacitance type in-cell touch panel provided the embodiment of the present invention and the detailed description of the invention of display device are described in detail.
In accompanying drawing, each layer film thickness and shape do not reflect the actual proportions of tft array substrate or color membrane substrates, and purpose is schematically illustrate present invention.
The horizontal section schematic diagram of the capacitance type in-cell touch panel that Fig. 2 provides for the embodiment of the present invention.As in figure 2 it is shown, the capacitance type in-cell touch panel that the embodiment of the present invention provides specifically includes: color membrane substrates 1, there is the tft array substrate 2 of common electrode layer, and the liquid crystal layer 3 between color membrane substrates 1 and tft array substrate 2；
The common electrode layer of tft array substrate 2 is made up of multiple touch-control drive electrodes 4 and multiple public electrode 5 of mutually insulated, and touch-control drive electrode 4 is arranged in a crossed manner with public electrode 5；Within the display time of a frame picture, each touch-control drive electrode 4 loads common electrode signal and touch scanning signals for timesharing ground；
Color membrane substrates 1 has multiple touch-control sensing electrode 6, and the projection on tft array substrate 2 of each touch-control sensing electrode 6 is positioned at public electrode 5 region.
In the above-mentioned capacitance type in-cell touch panel that the embodiment of the present invention provides, the common electrode layer that in tft array substrate whole connects is split, form mutually insulated and touch-control drive electrode arranged in a crossed manner and public electrode, color membrane substrates arranges touch-control sensing electrode, the projection on tft array substrate of each touch-control sensing electrode is positioned at the region at public electrode place, touch-control drive electrode is carried out timesharing driving, to realize touch controllable function and display function.Due in the touch screen that the embodiment of the present invention provides, the projection on tft array substrate of the touch-control sensing electrode is positioned at the region at public electrode place, and public electrode and touch-control drive electrode are positioned at same layer and mutually insulated, so, avoid generation right opposite between touch-control sensing electrode and touch-control drive electrode to amass, decrease and amassed the mutual capacitance formed by this right opposite, thus increase the ratio of the mutual capacitance variable quantity caused by finger touch, improve touch-control accuracy.
Further, owing to, in the above-mentioned touch screen that the embodiment of the present invention provides, touch-control and display stage use the mode of timesharing driving, on the one hand display can be driven and the chip of touch-control driving integrates, reduce production cost further；On the other hand timesharing drives and also is able to reduce display and the interfering of touch-control, and improves picture quality and touch-control accuracy.
Specifically, such as: in driver' s timing figure as shown in Figure 3, touch screen is shown, and the time of each frame (V-sync) is divided into display time period (Display) and touch-control time period (Touch), such as in the driver' s timing figure shown in Fig. 3, the time of display one frame of touch screen is 16.7ms, choose wherein 5ms as the touch-control time period, other 11.7ms is as the display time period, naturally it is also possible to according to the duration adjusting both that the disposal ability of IC chip is suitable, be not specifically limited at this.At display time period (Display), to every gate line Gate1 in touch screen, Gate2 ... Gaten applies scanning gate signal successively, data signal line Data is applied grayscale signal, the most now touch-control drive electrode Tx is as public electrode, the IC chip being connected with touch-control drive electrode provides it constant common electrode signal, it is achieved crystal display.At touch-control time period (Touch), the IC chip being connected with touch-control drive electrode provides touch scanning signals T1, T2 respectively to each touch-control drive electrode ... Tn, the most each touch-control sensing electrode carries out detecting touch-control sensing signal R1, R2 respectively ... Rn, it is achieved touch controllable function.In the touch-control time period, every gate line in touch screen and the input of data signal line no signal.And, each public electrode in common electrode layer loads common electrode signal all the time in display time period and touch-control time period, or, common electrode signal is loaded to each public electrode in the display time period, in touch-control time period each public electrode ground connection or unsettled process, this unsettled process refers to that no signal inputs.
In the specific implementation, in general capacitance type in-cell touch panel, all it is formed with multiple pixel cells arranged in arrays, it is preferred that typically extended along the line direction of pixel cell by each touch-control drive electrode 4；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, will each touch-control drive electrode 4 be arranged along pixel cell column direction extend, each touch-control sensing electrode 6 and each public electrode 5 be arranged along pixel cell line direction extend, do not limit at this.
Being the most all to extend along the line direction of pixel cell with each touch-control drive electrode 4, each touch-control sensing electrode 6 and each public electrode 5 illustrate as a example by the column direction extension of pixel cell.
Below the concrete structure of the touch-control drive electrode realizing touch controllable function in above-mentioned touch screen is described in detail.
Specifically, due to mutually insulated and collectively form common electrode layer between touch-control drive electrode 4 and public electrode 5；Therefore, when 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 the touch-control that each touch-control drive electrode 4 is divided into multiple colleague arrange drives sub-electrode 41, and each touch-control drives the sub-electrode 41 gap location between adjacent public electrode 5.Fig. 4 such as showing, touch-control drive electrode Tx1 is driven sub-electrode 41 to constitute by three touch-controls.
Certainly, when specific design common electrode layer, it is also possible to each touch-control drive electrode is arranged along the strip shaped electric poles that the line direction of pixel cell extends；The column direction that public electrode is arranged along pixel cell extends, and each public electrode is divided into the public sub-electrode that multiple same column is arranged, and each public sub-electrode drives the gap location between sub-electrode at adjacent touch-control.At this moment, in order to ensure do not have right opposite to amass between touch-control sensing electrode and touch-control drive electrode, multiple same columns the touch-control sensing sub-electrode arranged also is formed by touch-control sensing electrode corresponding with each public electrode.
Specifically, in common electrode layer design as shown in Figure 4, can also have a plurality of touch-control drive signal line 7 between adjacent pixel unit in tft array substrate, each touch-control of each touch-control drive electrode 4 drives sub-electrode 41 to be electrical connected by least one touch-control drive signal line 7.In the specific implementation, each touch-control drive signal line 7 extends generally along the line direction of pixel cell, the most each touch-control drive signal line 7 gap location between the pixel cell of adjacent lines.
It is preferred that in the specific implementation, each touch-control drive signal line 7 can be arranged with layer with the gate line in tft array substrate；Each touch-control drive signal line 7 drives sub-electrode 51 to be electrical connected by least one via with corresponding each touch-control, so, need not when preparing tft array substrate increase extra preparation section, have only to can be formed the figure of touch-control drive signal line 7 and gate line by patterning processes, preparation cost, improving product added value can be saved.
Further, owing to common electrode layer is typically made up of ITO material, and the resistance of ITO material is higher, after touch-control drive signal line 7 and each touch-control drive electrode 4 prepared by metal is electrical connected, be equivalent in parallel to ITO electrode and multiple metallic resistance being made up of touch-control drive signal line, so can reduce the resistance of touch-control drive electrode to greatest extent, thus signal to noise ratio when improving electrodes transfer signal.
Specifically, can also have a plurality of common electrode signal line 8 between adjacent pixel unit in tft array substrate, 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 extends generally along the line direction of pixel cell, as shown in Figure 4, and the most each common electrode signal line 8 gap location 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 the most each common electrode signal line 8 runs through corresponding public electrode 5, the most specifically limits the bearing of trend of common electrode signal line 8 at this.
It is preferred that when each common electrode signal line 8 is along the line direction extension of pixel cell, each common electrode signal line 8 can be arranged with layer with the gate line in tft array substrate；Each common electrode signal line 8 is electrical connected with corresponding each public electrode 5 by least one via.When each common electrode signal line 8 is along the column direction extension of pixel cell, each common electrode signal line 8 can be arranged with layer with the data signal line in tft array substrate；Each common electrode signal line 8 is electrical connected with corresponding each public electrode 5 by least one via.So, need not when preparing tft array substrate increase extra preparation section, it is only necessary to the figure of common electrode signal line 8 and gate line or data signal line can be formed by patterning processes, it is possible to save preparation cost, improving product added value.
Further, owing to common electrode layer is typically made up of ITO material, and the resistance of ITO material is higher, after common electrode signal line 8 and each public electrode 5 prepared by metal is electrical connected, be equivalent in parallel to ITO electrode and multiple metallic resistance being made up of common electrode signal line, so can reduce the resistance of public electrode to greatest extent, thus signal to noise ratio when improving electrodes transfer signal.
Preferably, in order at the aperture opening ratio ensureing large-sized touch display screen to greatest extent, dot structure in the tft array substrate of the touch screen that the embodiment of the present invention provides can use structure as shown in Figure 5 in the specific implementation, it is a pixel cell group with the two the most adjacent row pixel cells in tft array substrate in the structure shown here, there are between this two row pixel cell two gate line Gate1 and Gate2 in a line offer the gated sweep signal, such as Fig. 5 of this two row pixel cell, Gate3 and Gate4, Gate5 and Gate6 are provided.So the TFT switch in this adjacent rows pixel cell can be designed together, correspondingly can reduce the area of black matrix for blocking TFT switch and grid line, be favorably improved the aperture opening ratio touching display screen.
Further, the dot structure of above-mentioned Fig. 5, by changing gate line and the position of TFT switch of adjacent rows pixel cell, can save the position of gate line between adjacent pixel unit group.So, as shown in Figure 5, just each touch-control drive signal line 7 and each common electrode signal line 8 can be set the gap location between adjacent pixel unit group, the most each touch-control drive signal line 7 is particularly located at the gap location between adjacent pixel cell group, and each common electrode signal line 8 is particularly located at the gap location between the adjacent pixel unit group in addition to being provided with touch-control drive signal line 7.
Below the concrete structure of the touch-control sensing electrode realizing touch controllable function in above-mentioned touch screen is described in detail.
In the specific implementation, touch-control sensing electrode may be located between the substrate of color membrane substrates and black matrix region, it is also possible to is positioned at the black matrix region one side towards liquid crystal layer of color membrane substrates.
Specifically, the position of touch-control sensing electrode is corresponding with the position of public electrode, is so avoided that between touch-control sensing electrode and touch-control drive electrode that generation right opposite amasss.In the specific implementation, owing to the precision of touch screen is generally at grade, and the precision of LCDs is generally at micron order, it can be seen that the precision needed for display is far longer than the precision needed for touch-control, therefore, typically every touch-control sensing electrode and every public electrode all can corresponding multirow pixel cells.And, can touch accuracy according to specific needs, gap between each bar touch-control sensing electrode is set, the most only need to ensure that the projection on tft array substrate of each touch-control sensing electrode is positioned at public electrode region, the width of each touch-control sensing electrode is generally no greater than the width of public electrode, each touch-control sensing electrode can also be spaced at least one public electrode and arrange, it is also possible to touch-control sensing electrode and public electrode are set to relation one to one, do not limit at this.
Further, in the specific implementation, each bar touch-control sensing electrode Rx can be designed as having plane-shape electrode structure.Further, owing to the spacing between touch-control sensing electrode and touch-control drive electrode is less, in order to ensure that coupling capacitance improves the feasibility of touch-control in suitable scope, as shown in figures 6 a and 6b, each bar touch-control sensing electrode Rx can be designed as having grid electrode structure, and the pattern of each touch-control sensing electrode is hacked matrix area and covers, black matrix thus can be utilized to hide the fenestral fabric of touch-control sensing electrode, the aperture opening ratio of display will not be produced impact, also not interfere with the light transmission rate of display.Specifically, the mesh size of the grid electrode structure of each touch-control sensing electrode can according to concrete it needs to be determined that, such as, could be arranged to as shown in Figure 6 a, the i.e. pattern of touch-control sensing electrode Rx is positioned at the gap location between each sub-pixel unit (RGB) of composition pixel cell, it can also be provided that as shown in Figure 6 b, the gap location that i.e. pattern of touch-control sensing electrode Rx is only located between pixel cell, do not limit at this.
Specifically, the touch-control sensing electrode of the fenestral fabric owing to arranging on color membrane substrates will not block pixel cell, therefore, the material of touch-control sensing electrode can be specially transparent conductive oxide such as ITO or IZO, can also be metal, its resistance can be effectively reduced when using metal to make touch-control sensing electrode.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, when non-display area arranges the cabling being connected with touch-control drive electrode and touch-control sensing electrode, monolateral cabling or bilateral cabling can be used, does not limits at this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, the above-mentioned capacitance type in-cell touch panel provided including the embodiment of the present invention, the enforcement of this display device may refer to the embodiment of above-mentioned capacitance type in-cell touch panel, repeats no more in place of repetition.
A kind of capacitance type in-cell touch panel of embodiment of the present invention offer and display device, the common electrode layer that in tft array substrate whole connects is split, form mutually insulated and touch-control drive electrode arranged in a crossed manner and public electrode, color membrane substrates arranges touch-control sensing electrode, the projection on tft array substrate of each touch-control sensing electrode is positioned at the region at public electrode place, touch-control drive electrode is carried out timesharing driving, to realize touch controllable function and display function.Due in the touch screen that the embodiment of the present invention provides, the projection on tft array substrate of the touch-control sensing electrode is positioned at the region at public electrode place, and public electrode and touch-control drive electrode are positioned at same layer and mutually insulated, so, avoid generation right opposite between touch-control sensing electrode and touch-control drive electrode to amass, decrease and amassed the mutual capacitance formed by this right opposite, thus increase the ratio of the mutual capacitance variable quantity caused by finger touch, improve touch-control accuracy.Further, owing to using timesharing to drive touch-control and display function, it is also possible to reduce and interfere, improve picture quality.
Obviously, those skilled in the art can carry out various change and modification without departing from the spirit and scope of the present invention to the present invention.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a capacitance type in-cell touch panel, including: color membrane substrates, there is the thin film transistor (TFT) tft array substrate of common electrode layer, and the liquid crystal layer between described color membrane substrates and described tft array substrate, it is characterised in that
The common electrode layer of described tft array substrate is made up of multiple touch-control drive electrodes and multiple public electrode of mutually insulated, and described touch-control drive electrode is arranged in a crossed manner with public electrode；Within the display time of a frame picture, each described touch-control drive electrode loads common electrode signal and touch scanning signals for timesharing ground；
Described color membrane substrates has multiple touch-control sensing electrode, and each described touch-control sensing electrode upright projection on described tft array substrate is positioned at described public electrode upright projection on described tft array substrate.
2. touch screen as claimed in claim 1, it is characterised in that be formed with multiple pixel cells arranged in arrays in described capacitance type in-cell touch panel；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.
3. touch screen as claimed in claim 2, it is characterized in that, each public electrode is strip shaped electric poles, and each described touch-control drive electrode includes that the touch-control that multiple colleague is arranged drives sub-electrode, and each described touch-control drives sub-electrode gap location between adjacent public electrode.
4. touch screen as claimed in claim 3, it is characterized in that, having a plurality of touch-control drive signal line between adjacent pixel unit in described tft array substrate, each touch-control of each touch-control drive electrode drives sub-electrode to be electrical connected by least one touch-control drive signal line.
5. touch screen as claimed in claim 4, it is characterised in that having a plurality of common electrode signal line between adjacent pixel unit in described tft array substrate, each described public electrode is electrical connected with common electrode signal line.
6. touch screen as claimed in claim 5, it is characterized in that, described tft array substrate is a pixel cell group with two the most adjacent row pixel cells, there are between this two row pixel cell two gate line and be respectively a line of this two row pixel cell gated sweep signal is provided.
7. touch screen as claimed in claim 6, it is characterized in that, each described touch-control drive signal line is particularly located at the gap location between adjacent pixel cell group, and each common electrode signal line is particularly located at the gap location between the adjacent pixel unit group in addition to being provided with described touch-control drive signal line.
8. touch screen as claimed in claim 7, it is characterised in that each described touch-control drive signal line and each described common electrode signal line are arranged with layer with the gate line in described tft array substrate；Each described touch-control drive signal line drives sub-electrode to be electrical connected by least one via with corresponding each touch-control；Each described common electrode signal line is electrical connected with corresponding each public electrode by least one via.
9. the touch screen as described in any one of claim 1-8, it is characterised in that each described touch-control sensing electrode is between the substrate and black matrix region of described color membrane substrates.
10. touch screen as claimed in claim 9, it is characterised in that each described touch-control sensing electrode has grid electrode structure, and the grid electrode structure of described touch-control sensing electrode is by described black matrix region overlay.
11. touch screens as claimed in claim 10, it is characterised in that the material of each described touch-control sensing electrode is transparent conductive oxide or metal.
12. 1 kinds of display devices, it is characterised in that include the capacitance type in-cell touch panel as described in any one of claim 1-11.
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