CN202948425U - Embedded touch screen and display place - Google Patents
Embedded touch screen and display place Download PDFInfo
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- CN202948425U CN202948425U CN 201220690706 CN201220690706U CN202948425U CN 202948425 U CN202948425 U CN 202948425U CN 201220690706 CN201220690706 CN 201220690706 CN 201220690706 U CN201220690706 U CN 201220690706U CN 202948425 U CN202948425 U CN 202948425U
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Abstract
The utility model discloses an embedded touch screen and a display place and aims to reduce the mutual capacitance between the vertical overlapped surfaces of each touch sensing electrode and each touch driving electrode of the embedded touch screen and improve the touch control effect of the embedded touch screen. The embedded touch screen comprises a plurality of touch sensing electrodes and a plurality of touch driving electrodes; the touch sensing electrodes are arranged along a first direction, and the touch driving electrode are arranged along a second direction which is perpendicular to the first direction; each touch sensing electrode comprises a plurality of touch sensing sub-electrodes which are connected electrically; the projections of touch sensing sub-electrodes and the touch driving electrodes in the vertical direction are not overlapped; and/or each touch driving electrode comprises a plurality of touch driving sub-electrodes which are connected electrically; and the projections of the touch driving sub-electrodes and the touch sensing electrodes in the vertical direction are not overlapped.
Description
Technical field
The utility model relates to the display technique field of touching, and relates in particular to a kind of embedded touch-screen and display device.
Background technology
Embedded touch-screen (In cell Touch Panel) is the device that touch-screen and display screen become one.Touch drive electrode and touch sensible electrode and be integrated in display screen, realize simultaneously the function that touch-control and image show.Due to characteristics such as embedded touch screen structure are simple, light, thin, low-cost, become gradually the main flow in demonstration field.
Referring to Fig. 1, be the touch drive electrode 800 of horizontally set and the touch sensible electrode 900 that vertically arranges, adjacent touch drive electrode 800 and touch sensible electrode 900 couplings produce mutual capacitance C
m(mutual capacitance), when the finger touches screen, the touching of finger can change described mutual capacitance C
mValue, touch detecting apparatus is by detecting capacitor C before and after finger touches
mThe change of corresponding electric current, thus detect the position of finger touch point.
In embedded touch-screen, in order to improve the touch-control effect of touch-screen, the area that touches drive electrode and touch sensible electrode is larger, and correspondingly, the overlapping region that is positioned at bilevel touch drive electrode and touch sensible electrode projected area in the vertical direction is larger.Referring to Fig. 2, the overlapping region of the touch drive electrode 800 of the horizontally set of embedded touch-screen and touch sensible electrode 900 projected area in the vertical direction that vertically arranges is larger, touch drive electrode and be called vertical overlapping with touch sensible electrode projection in the vertical direction equitant zone, overlapping larger, and the mutual capacitance that touches overlapping the correspondence that forms between drive electrode and touch sensible electrode is larger.Drive electrode overlapping Area comparison vertical with the touch sensible electrode is considerable owing to touching, the electric field that forms both both comprised be used to effective projection electric field of realizing touch function (curve with arrow is the electric field line of fringe field), also comprise to realize touch function do not have beneficial effect over against electric field (straight line with arrow is the electric field line over against electric field).When larger over against the mutual capacitance that forms between electric field or vertical overlapping, cause touch detecting apparatus to detect initial value larger, can't accurately detect the faint variation of projection electric field signal after the finger touches touch-screen, therefore, the touch-control effect of touch-screen is relatively poor.
The utility model content
The utility model embodiment provides a kind of embedded touch-screen and display device, reduces touch sensible electrode in embedded touch-screen and touches the mutual capacitance that forms between vertical overlapping between drive electrode, improves the touch-control effect of embedded touch-screen.
A kind of embedded touch-screen that the utility model embodiment provides comprises many touch sensible electrodes that arrange along first direction, and many touch drive electrodes that the edge second direction vertical with first direction arranges;
Described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, described touch sensible sub-electrode and touch drive electrode projection zero lap zone in the vertical direction; And/or
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and described touch driven element electrode and touch sensible electrode projection zero lap in the vertical direction is regional.
Preferably, also comprise: first substrate and second substrate, be filled in the liquid crystal layer between described first substrate and second substrate, described touch sensible electrode and touch sensible electrode are arranged on same substrate, perhaps are arranged on different substrates.
Preferably, described touch drive electrode is formed on described second substrate, and described touch sensible electrode is formed on described first substrate; Described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, and each touches drive electrode is strip shaped electric poles;
Described embedded touch-screen also comprises and being formed on described second substrate along second direction, and many public electrodes that arrange with layer with described touch drive electrode, and described public electrode touches between drive electrodes two of arbitrary neighborhood; Being that described public electrode and touch drive electrode apply constant voltage in the image demonstration stage, is that described touch drive electrode applies HF voltage in the touch stage;
Wherein, be provided with slit between described public electrode and adjacent touch drive electrode.
Preferably, described touch drive electrode is formed on described first substrate, and described touch sensible electrode is formed on described second substrate;
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and each touch sensible electrode is strip shaped electric poles;
Described embedded touch-screen also comprises and being formed on described second substrate along first direction, and many public electrodes that arrange with layer with described touch sensible electrode, and described public electrode is between two touch sensible electrodes of arbitrary neighborhood; Show the stage and the touch stage is described public electrode and the touch sensible electrode applies constant voltage at image;
Wherein, be provided with slit between described public electrode and adjacent touch sensible electrode.
Preferably, also comprise and be formed on described second substrate many grid lines or many data lines that arrange along second direction;
Non-display area on slit between described public electrode and adjacent touch drive electrode and described grid line or data line place second substrate is corresponding.
Preferably, also comprise and be formed on described second substrate many grid lines or many data lines that arrange along first direction;
Non-display area on slit between described public electrode and adjacent touch sensible electrode and described grid line or data line place second substrate is corresponding.
Preferably, the overlapping area of the projection in the vertical direction of each touch sensible sub-electrode and public electrode equals the area of touch sensible sub-electrode.
Preferably, each touch driven element electrode and public electrode in the vertical direction the overlapping area of projection equal to touch the area of driven element electrode.
Preferably, described public electrode and an adjacent ultimate range that touches between drive electrode are 4mm ~ 8mm.
Preferably, the ultimate range between described public electrode and an adjacent touch sensible electrode is 4mm ~ 8mm.
Preferably, also comprise and be formed on described second substrate the public electrode that arranges with described touch drive electrode or touch sensible electrode different layers.
Preferably, described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, and each touches drive electrode and comprises a plurality of touch driven element electrodes that are electrical connected, and described touch sensible electrode arranges with touch drive electrode different layers; The projection equitant zone that touches that drive electrode is connected with the touch sensible electrode is the wire that connects the touch sensible sub-electrode and the be connected touch driven element electrode equitant zone of projection in the vertical direction.
Preferably, the touch sensible sub-electrode in each touch sensible electrode is electrical connected by wire, and the width of described wire is 3 μ m-10 μ m; And/or
Each touch driven element electrode that touches in drive electrode is electrical connected by wire, and the width of described wire is 3-10 μ m.
Preferably, described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, and the bee-line between two adjacent touch sensible sub-electrodes is 1.5mm ~ 5mm; And/or
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and the bee-line between two adjacent touch driven element electrodes is 1.5mm ~ 5mm.
A kind of display device that the utility model embodiment provides comprises embedded touch-screen described above.
The utility model embodiment is by providing touch drive electrode and/or the touch sensible electrode with certain pattern, guarantee to touch drive electrode and touch sensible electrode projection overlapping region in the vertical direction less, correspondingly, touch less over against electric field between drive electrode and touch sensible electrode, the mutual capacitance that forms between vertical overlapping is very little, reduce or eliminated touching between drive electrode and touch sensible electrode because of vertical overlapping mutual capacitance that causes more greatly, the touch-control effect of the embedded touch-screen of raising.
Description of drawings
Fig. 1 is existing embedded touch-screen touch-control principle schematic;
Fig. 2 realizes touching the electric field schematic diagram of location for existing touch drive electrode and touch sensible electrode;
The embedded touch-screen schematic cross-section that Fig. 3 provides for the utility model embodiment;
Fig. 4 is embedded touch-screen schematic top plan view shown in Figure 3;
Fig. 5 is the embedded touch-screen schematic cross-section with public electrode shown in Figure 3;
Fig. 6 is public electrode shown in Figure 3 and touches the schematic top plan view that drive electrode is positioned at same layer;
Fig. 7 is touch drive electrode, touch sensible electrode and public electrode relative position schematic top plan view shown in Figure 5;
The another kind of embedded touch-screen schematic top plan view that Fig. 8 provides for the utility model embodiment;
The touch drive electrode that Fig. 9 provides for the utility model embodiment is connected the electric field schematic diagram that the wire that connects the touch sensible sub-electrode forms with the touch sensible electrode;
The electric field schematic diagram that the touch drive electrode that Figure 10 provides for the utility model embodiment and the touch sensible sub-electrode in the touch sensible electrode form;
Figure 11 is the utility model embedded touch-screen working timing figure shown in Figure 5.
Embodiment
The utility model embodiment provides a kind of embedded touch-screen and display device, reduces touch sensible electrode and the vertically mutual capacitance of formation between overlapping of touch drive electrode in embedded touch-screen, improves the touch-control effect of embedded touch-screen.
The below simply introduces the principle of work of touch-screen.
Capacitive touch screen comprises surface capacitance type touch screen and projected capacitive touch screen.The touch-screen that the utility model embodiment provides is projected capacitive touch screen.
The principle of work of projected capacitive touch screen is: apply HF voltage touching on drive electrode, apply constant voltage on the touch sensible electrode, form the projection electrostatic field, the base current I of corresponding touch detection circuit between both
0When the touching touch-screen, the electric field of finger has changed the size that touches the projection electrostatic field between drive electrode and touch sensible electrode, the base current I of corresponding circuits
0Variation has occured; The touch point locating and detecting device is by detecting I
0Changing value determine the coordinate figure at place, touch point.The electric field of finger can't change touch between drive electrode and touch sensible electrode over against electric field, that is to say to touch the location, touch point is not contributed over against electric field between drive electrode and touch sensible electrode, but increased on the contrary the base current I of touch detection circuit
0The electric current I that makes the touch point cause
0The change value with respect to I
0Less or seem very faint, be unfavorable for the position of accurate detected touch point.
The utility model embodiment realizes touching drive electrode and the touch sensible electrode less embedded touch-screen in overlapping region of projection in the vertical direction by touch drive electrode and/or the touch sensible electrode with certain pattern is provided.
The embedded touch-screen that the utility model embodiment provides can be integrated in the display panels of TN pattern, or the display panels of senior super Wei Chang conversion (ADS, Advanced Super Dimension Switch) pattern.The ADS pattern is plane electric fields wide visual angle core technology, its core technology characteristic description is: the electric field that the electric field that produces by gap electrode edge in same plane and gap electrode layer and plate electrode interlayer produce forms multi-dimensional electric field, make in liquid crystal cell between gap electrode, directly over electrode, all aligned liquid-crystal molecules can both produce rotation, thereby improved the liquid crystal work efficiency and increased light transmission efficiency.The switching technique of ADS pattern 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, without advantages such as water of compaction ripples (push Mura).For different application, the improvement technology of ADS technology has high permeability I-ADS technology, high aperture H-ADS and high resolving power S-ADS technology etc.
The embedded touch-screen that the utility model embodiment provides touches drive electrode and touch sensible electrode and can be arranged on same substrate, also can be arranged on different substrates.For example: touch drive electrode and touch sensible electrode and can all be arranged on the color membrane substrates of display panels, or all be arranged on the array base palte of display panels, perhaps touching drive electrode is arranged on array base palte, the touch sensible electrode is arranged on color membrane substrates, perhaps touch drive electrode and be arranged on color membrane substrates, the touch sensible electrode is arranged on array base palte.
The embedded touch-screen that the utility model embodiment provides comprises many touch sensible electrodes that arrange along first direction, and many touch drive electrodes that the edge second direction vertical with first direction arranges; Described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, described touch sensible sub-electrode and touch drive electrode projection zero lap zone in the vertical direction; And/or described each touch drive electrode and comprise a plurality of touch driven element electrodes that are electrical connected, described touch driven element electrode and touch sensible electrode projection zero lap in the vertical direction is regional.
Need to prove, described first direction is that laterally second direction is vertical; Perhaps described first direction is that vertically second direction is horizontal.Described first substrate can be color membrane substrates, and described second substrate can be array base palte; Perhaps described first substrate can be array base palte, and described second substrate can be color membrane substrates.
The below is arranged on different substrates as example and describes to touch drive electrode and touch sensible electrode.
In accompanying drawing, each layer film thickness and shape do not reflect the true ratio of embedded touch-screen and display device, and purpose is signal explanation the technical solution of the utility model just.
Referring to Fig. 3, the schematic cross-section of a kind of embedded touch-screen that provides for the utility model embodiment, embedded touch-screen comprises:
As Fig. 4, be the schematic top plan view of touch drive electrode 20 and touch sensible electrode 10 shown in Figure 3.Each touches drive electrode 20 is strip shaped electric poles, each touch sensible electrode 10 is by the structure in the dotted line of Reference numeral 100 indications in a plurality of touch sensible sub-electrode 100(such as Fig. 4) form, a plurality of touch sensible sub-electrodes 100 are by the structure in the dotted line of Reference numeral 101 indications in wire 101(such as Fig. 4) be electrical connected;
Touch sensible sub-electrode 100 and touch drive electrode 20 projection zero lap zone in the vertical direction.
Preferably, the width of wire 101 can be arranged on micron dimension, for example can be 3 μ m-10 μ m.That is to say, the width that connects the wire 101 of touch sensible sub-electrode 100 is 3 μ m-10 μ m, and described wire can be metal wire or transparency conductive electrode.
In like manner, comprise a plurality of touch driven element electrodes that are electrical connected if touch drive electrode, the width that connects the wire that touches the driven element electrode also can be 3 μ m-10 μ m, and described wire can be metal wire or transparency conductive electrode.
Need to prove, when the width of the wire in above-mentioned scope is 3 μ m-10 μ m, can be for choosing a value, its width is constant, can be also gradual change for the width at 3 μ m-10 μ m scope inside conductors, this need to arrange according to concrete demand certainly.
Fig. 3 and touch-screen shown in Figure 4, the overlapping area that touches drive electrode 20 and touch sensible electrode 10 projection in the vertical direction is only the area of the wire 101 between adjacent two touch sensible sub-electrodes 100.Because the width of wire 101 is several microns, touch the width of drive electrode 20 and touch sensible electrode 10 at several millimeters, be also that the length of wire 101 is about several millimeters.Therefore can think that the overlapping area that touches drive electrode 20 and touch sensible electrode 10 projection in the vertical direction is very little, the electric field that forms between vertical overlapping is also very little, has improved the touch-control effect of embedded touch-screen.
In specific implementation process, by apply constant voltage on touch sensible electrode 10, apply HF voltage on touch drive electrode 20, form projection electric field in edge between touch sensible electrode 10 and touch drive electrode 20, realize touch function.
Referring to Fig. 5, embedded touch-screen shown in Figure 3 also comprises, be formed on second substrate 2 and longitudinally arrange, and with many public electrodes 21 that touch the same layer setting of drive electrode 20, public electrode 21 between two touch drive electrodes 20 of arbitrary neighborhood, is also that public electrode is all that strip shaped electric poles and interval arrange with touching drive electrode.
The vertical view of the public electrode 21 in touch-screen shown in Figure 5 and touch drive electrode 20 as shown in Figure 6.
In specific implementation process, public electrode 21 and touch drive electrode 20 are being made with in a Mapping Technology process, only conductive film layer need to be divided into a plurality of strip shaped electric poles according to preset ratio and get final product.Has certain slit between strip shaped electric poles, to guarantee insulation mutually between adjacent bus.
The utility model touches drive electrode and is used for realizing touch function touching the demonstration stage, image show the stage as public electrode in order to realize image display function.That is to say, the utility model touches drive electrode and applies different voltages to realize different functions in different phase.In the demonstration stage, for touch drive electrode 20 shown in Figure 5 and public electrode 21 apply constant common electric voltage V
com, ground voltage GND for example; At this moment, the public electrode of equivalence is for covering the strip shaped electric poles of whole second substrate image display area.Touching the demonstration stage, for touch drive electrode 20 shown in Figure 5 applies HF voltage V
Drive
Preferably, public electrode, touch drive electrode are made by transparent conductive material, and transparent conductive material can be indium tin oxide ITO or indium-zinc oxide IZO.In like manner, the touch sensible electrode also can be made by transparent conductive material, and transparent conductive material can be indium tin oxide ITO or indium-zinc oxide IZO.
Preferably, the embedded touch-screen that the utility model embodiment provides also comprises and is formed on second substrate grid line or the data line that arranges along second direction, adjacent public electrode 21 and touch grid line on slit and second substrate between drive electrode 20 or the non-display area at data line place corresponding.That is to say the non-display area of vertical projection between certain adjacent two row or two row pixel cells of the slit between adjacent public electrode 21 and touch drive electrode 20.Such set-up mode is provided with public electrode above can satisfying all pixel cells, avoid slit to be arranged on the zone corresponding with electrode unit, cause the electric field that forms between pixel electrode and public electrode inhomogeneous, make the deflection of liquid crystal molecule influenced, affect the display effect of image.Grid line, data line, pixel cell and pixel electrode all belong to prior art, do not embody in the accompanying drawings, repeat no more here.
Referring to Fig. 7, be the vertical view of the public electrode 21 in embedded touch-screen shown in Figure 5, touch drive electrode 20, touch sensible electrode 21.Touch sensible sub-electrode 100 projection in the vertical direction in each touch sensible electrode 10 is positioned at public electrode 21 projection in the vertical direction.That is to say, touch sensible sub-electrode 100 in each touch sensible electrode 10 is corresponding with public electrode 21, like this, the electric capacity of touch sensible electrode 10 for and ground between the electric capacity that forms, be also earth capacitance, touch sensible electrode electric capacity over the ground is very little on the impact of touch-control effect; The mutual capacitance that touches drive electrode 20 is only the electric capacity that forms with wire 101, capacitance is very little, embodiment of the present utility model has reduced to touch drive electrode and touch sensible electrode projection in the vertical direction equitant zone, has reduced the mutual capacitance that both forms between vertical overlapping.
Preferably, public electrode 21 and touch drive electrode 20 respectively can corresponding multirow or multiple row pixel cell, this will depending on public electrode 21 and touch drive electrode 20 size separately.
Preferably, as Fig. 6, public electrode 21 and an adjacent ultimate range L who touches between drive electrode 20 are 4mm ~ 8mm, are preferably 5mm.The width of public electrode 21 and touch drive electrode 20 can be identical, also can be set to according to the actual requirements not identical.
Preferably, the bee-line between two adjacent touch sensible sub-electrodes 10 is 1.5mm ~ 5mm, is preferably 2mm; And/or the bee-line between two adjacent touch driven element electrodes is 1.5mm ~ 5mm, is preferably 2mm.
Preferably, the embedded touch-screen that the utility model embodiment provides touches drive electrode and also can be comprised of a plurality of touch driven element electrodes, and the touch sensible electrode can be strip shaped electric poles or also can be for being comprised of a plurality of touch sensible sub-electrodes.
Touch driven element electrode and touch sensible sub-electrode and can for rectangle or rhombus etc., be preferably rectangle.
The embedded touch-screen that the utility model embodiment provides, touch sensible electrode and touch drive electrode are arranged on same substrate, perhaps are arranged on different substrates.In the time of on being arranged at different substrates, one of touch sensible electrode and touch drive electrode can be arranged on first substrate, and another can be arranged on second substrate.
Fig. 3 is arranged on second substrate for touching drive electrode to embedded touch-screen shown in Figure 7, and the touch sensible electrode is arranged on first substrate.
The embedded touch-screen that the utility model embodiment provides, also can for: touch drive electrode and be formed on described first substrate, the touch sensible electrode is formed on described second substrate;
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and each touch sensible electrode is strip shaped electric poles;
Described embedded touch-screen also comprises and being formed on described second substrate along second direction, and with many public electrodes of described touch sensible electrode with layer setting, described public electrode between two touch sensible electrodes of arbitrary neighborhood, is also that public electrode is all that strip shaped electric poles and interval arrange with touching drive electrode; Show the stage and the touch stage is described public electrode and the touch sensible electrode applies constant voltage at image;
Wherein, be provided with slit between described public electrode and adjacent touch sensible electrode.
Wherein, also comprise and be formed on described second substrate many grid lines or many data lines that arrange along first direction; Non-display area on grid line on slit between described public electrode and adjacent touch sensible electrode and array base palte or data line place second substrate is corresponding.
Preferably, each touch driven element electrode and public electrode in the vertical direction the overlapping area of projection equal to touch the area of driven element electrode.
Ultimate range between described public electrode and an adjacent touch sensible electrode is 4mm ~ 8mm.
In this setup and above-described embodiment 1, Fig. 3 is similar to the set-up mode of each electrode of touch-screen shown in Figure 7, repeats no more here.
Above-mentioned two kinds of set-up modes, when touch drive electrode (or touch sensible electrode) and public electrode are arranged on same layer, touching drive electrode (or touch sensible electrode) is strip shaped electric poles, and another is arranged on the electrode of touch sensible electrode (or touching drive electrode) for being comprised of a plurality of touch sensible sub-electrodes (or touching the driven element electrode) with the public electrode different layers.Such set-up mode can drive touch drive electrode (or the touch sensible electrode) timesharing that is arranged on same layer with public electrode, and timesharing realizes that image shows and touch function.
Touch drive electrode in the present embodiment (or touch sensible electrode) is arranged on different layers with public electrode.
Referring to Fig. 8, touch drive electrode 20 and formed by a plurality of touch driven element electrodes 200, and touch sensible electrode 10 is comprised of a plurality of touch sensible sub-electrodes 100, touch driven element electrode 200 and connected by wire 201, touch sensible sub-electrode 100 is connected by wire 101.Touch drive electrode 20 and touch sensible electrode 10 projection in the vertical direction equitant zone and be wire 201 and the wire 101 equitant zone of projection in the vertical direction, the length of overlapping region and width are all in micron dimension, and it is very little that area is compared bus.
Embedded touch-screen shown in Figure 8, public electrode is arranged on different layers with touch drive electrode 20 and touch sensible electrode 10.The set-up mode of public electrode is similar to prior art with pattern, repeats no more here.
When the touch drive electrode in the utility model embodiment and touch sensible electrode are arranged on same substrate, can arrange or the different layers setting with layer, it is same as the prior art, does not explain at this.
Difference with above-mentioned two embodiment in the present embodiment is, public electrode can be set to strip shaped electric poles or plate electrode, all do not limit at this, and arrange with touch-control drive electrode or touch-control sensing electrode different layers, the structure that other are relevant, all same as the previously described embodiments or similar such as wire, touch-control driven element electrode, touch-control sensing sub-electrode, do not explain at this.
The utility model has touch drive electrode or the touch sensible electrode of certain pattern by setting, the area that touches the overlapping region of drive electrode and the projection in the vertical direction of touch sensible electrode be only the area of wire of several microns wide or less, makes the mutual capacitance that touches formation between vertical overlapping of drive electrode and touch sensible electrode less or almost nil.The utility model preferably touches the driven element electrode and touch sensible electrode projection zero lap in the vertical direction is regional, perhaps touch sensible sub-electrode and touch drive electrode projection zero lap zone in the vertical direction.Even the touch sensible sub-electrode has the overlapping region with the projection in the vertical direction of touch drive electrode, perhaps touch the driven element electrode and the projection in the vertical direction of touch sensible electrode has the overlapping region, be also a kind of preferred embodiment with respect to prior art, the mutual capacitance that forms between vertical overlapping also has reducing to a certain degree.Everyly reduced to touch between drive electrode and touch sensible electrode vertical overlapping all in the utility model order of the present utility model with respect to prior art, the utility model does not just enumerate.
The embedded touch-screen that illustrates the utility model and provide below in conjunction with accompanying drawing can improve the principle of touch-screen touch-control effect.
Referring to Fig. 9 be the utility model embedded touch-screen shown in Figure 4 A-B to sectional view, touch electric field (straight line with arrow in Fig. 9 the represents electric field line) schematic diagram that forms between the wire 101 in drive electrode 20 and touch sensible electrode 10.As can be known, touch the electric field density that forms between the wire 101 in drive electrode 20 and touch sensible electrode 10 very little, in several micrometer ranges, therefore, be not enough to affect the touch-control effect due to the width of wire 101.Fig. 9 is only example, and the density of actual electric field can not be described.
Referring to Figure 10 be the utility model embedded touch-screen shown in Figure 4 C-D to sectional view, touch the edge projection electric field schematic diagram that forms between drive electrode 20 and touch sensible sub-electrode 100.By Figure 10 and Fig. 9 as can be known, touch very little over against electric field between drive electrode and touch sensible electrode, edge projection electric field is larger, the corresponding mutual capacitance that touches between drive electrode and touch sensible electrode is almost nil, greatly reduces the front initial current I of finger touches screen that touch detecting apparatus detects
0, improve the change ratio of electric current before and after touching, thereby improve the touch-control effect.
The embedded touch-screen that the utility model is shown in Figure 5 is positioned at same layer by public electrode and touch drive electrode, and timesharing drives and touches drive electrode, realizes that the better image of effect shows and touch function.
Referring to Figure 11, for realizing that image shows and the sequential chart of touch function, illustrate the principle of work of the embedded touch-screen that the utility model embodiment provides.
In Figure 11, V-sync is clock signal.Comprise n bar grid line, be respectively grid line 1(Gate 1), grid line 2(Gate 2) ... grid line m(Gate m), grid line m+1(Gate m+1), grid line m+2(Gate m+2), grid line m+3(Gate m+3), grid line n-1(Gate n-1), grid line n(Gate n).Also comprise data line (Date).
N bar touch drive electrode (T1, T2 ..., sequential Tn), and n bar touch sensible electrode (R1, R2 ..., sequential Rn).
As Figure 11, front 11.7ms is followed successively by grid line and applies gate voltage, is followed successively by simultaneously data line and applies data-signal, touches drive electrode and applies certain constant voltage, realizes that image shows.
After a two field picture has shown, before the next frame image shows, for grid line, data line apply low level signal, make the TFT that is connected with grid line turn-off in 5ms.Driving line applies certain HF voltage for touching drive electrode, and Sensing line is that the touch sensible electrode applies constant voltage simultaneously.Be applied with the touch sensible electrode of constant voltage and be applied with between the touch drive electrode of HF voltage and form electric field, realize touch function.
The 11.7ms in above-mentioned image demonstration stage and the 5ms in touch demonstration stage are just for the example one by one shown in the utility model is described, in the specific implementation process, image shows the 11.7ms that is not limited in stage, and the touch demonstration stage is not limited to 5ms.
The utility model embodiment also provides a kind of display device, comprise above-mentioned embedded touch-screen, this display device can be the display device such as liquid crystal display, LCD TV, ORGANIC ELECTROLUMINESCENCE DISPLAYS oled panel, OLED display, OLED TV or Electronic Paper.
The utility model embodiment is by providing touch drive electrode and/or the touch sensible electrode with certain pattern, the overlapping region of projection is less in the vertical direction guarantee to touch drive electrode and touch sensible electrode, correspondingly, touch less or almost do not have over against electric field between drive electrode and touch sensible electrode, reduce or eliminated touching drive electrode and the vertically mutual capacitance between overlapping of touch sensible electrode, improve the touch-control effect of embedded touch-screen.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (15)
1. an embedded touch-screen, comprise many touch sensible electrodes that arrange along first direction, and many touch drive electrodes that the edge second direction vertical with first direction arranges; It is characterized in that,
Described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, described touch sensible sub-electrode and touch drive electrode projection zero lap zone in the vertical direction; And/or
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and described touch driven element electrode and touch sensible electrode projection zero lap in the vertical direction is regional.
2. embedded touch-screen according to claim 1, it is characterized in that, also comprise: first substrate and second substrate, be filled in the liquid crystal layer between described first substrate and second substrate, described touch sensible electrode and touch drive electrode are arranged on same substrate, perhaps are arranged on different substrates.
3. embedded touch-screen according to claim 2, is characterized in that, described touch drive electrode is formed on described second substrate, and described touch sensible electrode is formed on described first substrate;
Described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, and each touches drive electrode is strip shaped electric poles;
Described embedded touch-screen also comprises and being formed on described second substrate along second direction, and many public electrodes that arrange with layer with described touch drive electrode, and described public electrode touches between drive electrodes two of arbitrary neighborhood; Being that described public electrode and touch drive electrode apply constant voltage in the image demonstration stage, is that described touch drive electrode applies HF voltage in the touch stage;
Wherein, be provided with slit between described public electrode and adjacent touch drive electrode.
4. embedded touch-screen according to claim 2, is characterized in that, described touch drive electrode is formed on described first substrate, and described touch sensible electrode is formed on described second substrate;
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and each touch sensible electrode is strip shaped electric poles;
Described embedded touch-screen also comprises and being formed on described second substrate along first direction, and many public electrodes that arrange with layer with described touch sensible electrode, and described public electrode is between two touch sensible electrodes of arbitrary neighborhood; Show the stage and the touch stage is described public electrode and the touch sensible electrode applies constant voltage at image;
Wherein, be provided with slit between described public electrode and adjacent touch sensible electrode.
5. embedded touch-screen according to claim 3, is characterized in that, also comprises being formed on many grid lines or many data lines that arrange along second direction on described second substrate;
Non-display area on slit between described public electrode and adjacent touch drive electrode and described grid line or data line place second substrate is corresponding.
6. to remove 4 described embedded touch-screens according to right, it is characterized in that, also comprise being formed on many grid lines or many data lines that arrange along first direction on described second substrate;
Non-display area on slit between described public electrode and adjacent touch sensible electrode and described grid line or data line place second substrate is corresponding.
7. embedded touch-screen according to claim 3, is characterized in that, each touch sensible sub-electrode and the public electrode overlapping area of projection in the vertical direction equal the area of touch sensible sub-electrode.
8. embedded touch-screen according to claim 4, is characterized in that, each touch driven element electrode and public electrode in the vertical direction the overlapping area of projection equal to touch the area of driven element electrode.
9. embedded touch-screen according to claim 3, is characterized in that, described public electrode and an adjacent ultimate range that touches between drive electrode are 4mm ~ 8mm.
10. embedded touch-screen according to claim 4, is characterized in that, the ultimate range between described public electrode and an adjacent touch sensible electrode is 4mm ~ 8mm.
11. embedded touch-screen according to claim 2 is characterized in that, also comprises being formed on the public electrode that arranges with described touch drive electrode or touch sensible electrode different layers on described second substrate.
12. embedded touch-screen according to claim 11, it is characterized in that, described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, each touches drive electrode and comprises a plurality of touch driven element electrodes that are electrical connected, and described touch sensible electrode arranges with touch drive electrode different layers; The projection equitant zone that touches that drive electrode is connected with the touch sensible electrode is the wire that connects the touch sensible sub-electrode and the be connected touch driven element electrode equitant zone of projection in the vertical direction.
13. according to claim 1-12 arbitrary described embedded touch-screens is characterized in that the touch sensible sub-electrode in each touch sensible electrode is electrical connected by wire, the width of described wire is 3 μ m-10 μ m; And/or
Each touch driven element electrode that touches in drive electrode is electrical connected by wire, and the width of described wire is 3-10 μ m.
14. according to claim 1-12 arbitrary described embedded touch-screens is characterized in that described each touch sensible electrode comprises a plurality of touch sensible sub-electrodes that are electrical connected, the bee-line between two adjacent touch sensible sub-electrodes is 1.5mm ~ 5mm; And/or
Described each touch drive electrode comprises a plurality of touch driven element electrodes that are electrical connected, and the bee-line between two adjacent touch driven element electrodes is 1.5mm ~ 5mm.
15. a display device is characterized in that, comprises the arbitrary described embedded touch-screen of claim 1-14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690706 CN202948425U (en) | 2012-12-13 | 2012-12-13 | Embedded touch screen and display place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690706 CN202948425U (en) | 2012-12-13 | 2012-12-13 | Embedded touch screen and display place |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948425U true CN202948425U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690706 Expired - Lifetime CN202948425U (en) | 2012-12-13 | 2012-12-13 | Embedded touch screen and display place |
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| Country | Link |
|---|---|
| CN (1) | CN202948425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049155A (en) * | 2012-12-13 | 2013-04-17 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
| TWI510988B (en) * | 2013-07-17 | 2015-12-01 | Chunghwa Picture Tubes Ltd | In-cell touch display panel |
-
2012
- 2012-12-13 CN CN 201220690706 patent/CN202948425U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049155A (en) * | 2012-12-13 | 2013-04-17 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
| TWI510988B (en) * | 2013-07-17 | 2015-12-01 | Chunghwa Picture Tubes Ltd | In-cell touch display panel |
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Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150707 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150707 |
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Effective date of registration: 20150707 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE TECHNOLOGY GROUP Co.,Ltd. Patentee after: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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