CN202854766U - Embedded touch screen and display device - Google Patents
Embedded touch screen and display device Download PDFInfo
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- CN202854766U CN202854766U CN201220558036.8U CN201220558036U CN202854766U CN 202854766 U CN202854766 U CN 202854766U CN 201220558036 U CN201220558036 U CN 201220558036U CN 202854766 U CN202854766 U CN 202854766U
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Abstract
The utility model discloses an embedded touch screen and a display device. Touch control effect of the embedded touch screen is improved. The embedded touch screen comprises a plurality of touch drive electrode strips which are arranged along a first direction, a plurality of touch sensing electrode strips which are arranged along a second direction crossed with the first direction, and a shielding layer which is placed between the touch drive electrode strips and the touch sensing electrode strips, used for shielding opposite electric fields between vertical overlapping faces of the touch drive electrode strips and the touch sensing electrode strips and provided with a certain pattern.
Description
Technical field
The utility model relates to the display technique field, 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 the display screen, realize simultaneously the function that touch-control and image show.Owing to characteristics such as embedded touch screen structure is simple, light, thin, and are low-cost, become gradually the main flow in demonstration field.
Referring to Fig. 1, be the touch drive electrode 100 of horizontally set and the touch sensible electrode 200 that vertically arranges, adjacent touch drive electrode 100 and touch sensible electrode 200 couplings produce mutual capacitor C
m(mutual capacitance), when the finger touches screen, the touching of finger can change described mutual capacitor C
mValue, touch detecting apparatus is by detecting capacitor C before and after the 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 area of vertical direction is also larger between bilevel touch drive electrode and touch sensible electrode.Referring to Fig. 2, between the touch drive electrode 100 of the horizontally set of embedded touch-screen and the touch sensible electrode 200 that vertically arranges vertical overlapping larger, the mutual electric capacity that forms between overlapping (or mutual electric field) is larger.Because it is considerable to touch the vertical overlapping Area comparison with the touch sensible electrode of drive electrode, the electric field that forms between the two both comprised for effective projection electric field (curve with arrow is the electric field line of fringe field) of realizing touch function, also comprise to realize touch function without any beneficial effect over against electric field (straight line with arrow is the electric field line over against electric field).When over against electric field or when larger over against mutual capacitance, it is larger to cause touch detecting apparatus to detect initial value, can't accurately detect the faint variation of projection electric field signal behind the finger touches touch-screen, and 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, in order to improve the touch-control effect of embedded touch-screen.
A kind of embedded touch-screen that the utility model embodiment provides comprises: many touch drive electrodes that arrange along first direction, and the touch sensible electrode of the second direction setting that intersects of many edges and first direction; Also comprise:
Be used for the vertically screen layer with certain pattern over against electric field between overlapping of shielding touch drive electrode and touch sensible electrode between described touch drive electrode and the touch sensible electrode.
Preferably, described screen layer is arranged at and vertical overlapping the corresponding position with the touch sensible electrode of described touch drive electrode.
Preferably, also comprise: first substrate and second substrate, be filled in the liquid crystal layer between described first substrate and the second substrate, described touch drive electrode is arranged on the described first substrate, and described touch sensible electrode is arranged on the described second substrate; Described screen layer is arranged on first substrate or the second substrate.
Preferably, described screen layer is arranged on the second substrate, described screen layer is positioned on the described touch sensible electrode towards a side of described liquid crystal layer, and described embedded touch-screen also comprises: the first insulation course, and between described touch sensible electrode and described screen layer.
Preferably, described screen layer is arranged on the first substrate, described screen layer is positioned on the described touch drive electrode towards a side of described liquid crystal layer, and described embedded touch-screen also comprises: the second insulation course, and between described touch drive electrode and described screen layer.
Preferably, described touch drive electrode is grid line;
Described touch drive electrode comprises the strip drive electrode unit of a plurality of vertical distributions, and described touch drive electrode links to each other with described grid line;
Described screen layer is arranged at and described touch drive electrode unit and vertical overlapping corresponding position with the touch sensible electrode.
Preferably, described the second insulation course is the passivation layer on the first substrate, and described screen layer is arranged at described passivation layer top towards a side of described liquid crystal layer.
Preferably, described touch drive electrode is public electrode; The pattern of described screen layer equals or is slightly larger than the pattern of described touch sensible electrode.
Preferably, described touch sensible electrode comprises vertical touch sensible sub-electrode of a plurality of vertical settings and the horizontal touch sensible sub-electrode of horizontally set.
Preferably, described vertical touch sensible sub-electrode is arranged at the zone corresponding with the black matrix" on the second substrate, and described horizontal touch sensible sub-electrode places the zone corresponding with the grid line on the first substrate.
Preferably, described screen layer is metallic diaphragm or transparent conductive oxide rete.
The utility model embodiment also provides a kind of display device, comprises above-mentioned embedded touch-screen.
A kind of embedded touch-screen that the utility model embodiment provides, by between touch sensible electrode and touch drive electrode, screen layer being set, the touch sensible electrode and touch between the drive electrode over against the electric field conductively-closed, reduce the mutual capacitance between touch sensible electrode and the touch drive electrode, reduce the initial probe value of touch detecting apparatus, improve the accuracy that touch detecting apparatus detects the touch point, thereby improve the touch-control effect of touch-screen.
Description of drawings
Fig. 1 is existing embedded touch-screen touch-control principle schematic;
Fig. 2 is the existing electric field synoptic diagram that touches drive electrode and touch sensible electrode realization touch location;
The electric field synoptic diagram that Fig. 3 locates for the touch with screen layer that the utility model embodiment provides;
The screen layer that Fig. 4 provides for the utility model embodiment is positioned at the embedded touch screen structure synoptic diagram on the second substrate;
The screen layer that Fig. 5 provides for the utility model embodiment is positioned at the embedded touch screen structure synoptic diagram on the first substrate;
Touch drive electrode and touch sensible electrode relative position schematic top plan view that Fig. 6 provides for the utility model the first embodiment;
Touch drive electrode and touch sensible electrode relative position schematic top plan view that Fig. 7 provides for the utility model the first embodiment;
The touch drive electrode that Fig. 8 provides for the utility model the first embodiment, touch sensible electrode and screen layer relative position schematic top plan view;
Touch drive electrode and touch sensible electrode relative position schematic top plan view that Fig. 9 provides for the utility model the second embodiment;
Touch drive electrode and screen layer relative position schematic top plan view that Figure 10 provides for the utility model the second embodiment;
The touch drive electrode structural representation that Figure 11 provides for the utility model the second embodiment;
The embedded touch-screen with screen layer that Figure 12 provides for the utility model embodiment is realized the electric field structure synoptic diagram of touch controllable function;
The embedded touch-screen that Figure 13 provides for the utility model embodiment is realized the sequential chart of touch controllable function.
Embodiment
The utility model embodiment provides a kind of embedded touch-screen and display device, in order to reduce between the adjacent touch drive electrode of embedded touch-screen and the touch sensible electrode over against mutual capacitor C
m, improve the touch-control effect of embedded touch-screen, and realize a kind of embedded touch-screen simple in structure, lower-cost.
Referring to Fig. 3, the utility model embodiment arranges the screen layer 40 with certain pattern by driving in touch between electricity 10 and the touch sensible electrode 20, this screen layer 40 preferably is arranged on and touches in vertical direction overlapping corresponding position of drive electrode 10 and touch sensible electrode 20, be used for that shielding touches that drive electrode 10 and touch sensible electrode 20 form between vertical overlapping over against electric field, because screen layer 40 is connected to reference to earth point, therefore, be converted into earth electric field over against electric field.Reduce the mutual capacitance between touch sensible electrode and the touch drive electrode, reduce the initial probe value of touch detecting apparatus, improve the accuracy that touch detecting apparatus detects the touch point, thereby improve the touch-control effect of touch-screen.And the screen layer 40 that the utility model increases can not change original model of touch detection circuit.
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 dimension field switch (ADS, Advanced Super Dimension Switch) pattern.
The embedded touch-screen that the utility model embodiment provides touches drive electrode and touch sensible electrode and can be arranged on the same substrate, also can be arranged on the 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 touch drive electrode and be arranged on the array base palte, the touch sensible electrode is arranged on the color membrane substrates.
The embedded touch-screen that the utility model embodiment provides comprises many touch drive electrodes that arrange along first direction, and the touch sensible electrode of the second direction setting that intersects of many edges and first direction; And be used for the vertically screen layer with certain pattern over against electric field between overlapping of shielding touch drive electrode and touch sensible electrode between described touch drive electrode and the touch sensible electrode.
Below in conjunction with accompanying drawing, the embedded touch-screen that the utility model embodiment is provided is described in detail.
Each layer film thickness and shape do not reflect the true ratio of embedded touch-screen and display device in the accompanying drawing, and purpose is signal explanation the technical solution of the utility model just.
The below is arranged on the different substrates as example and describes to touch drive electrode and touch sensible electrode.
Referring to Fig. 4, the schematic cross-section of a kind of embedded touch-screen that provides for the utility model embodiment, embedded touch-screen comprises:
Touching between drive electrode 10 and the touch sensible electrode 20 for shielding the vertically screen layer 40 over against electric field between overlapping of touch drive electrode 10 and touch sensible electrode 20;
Preferably, in order to improve to greatest extent the light transmittance of embedded touch-screen, screen layer 40 is the transparent conductive oxide rete, for example can be indium tin oxide ITO rete or indium-zinc oxide IZO rete.Therefore, insulate by the first insulation course 21 between screen layer 40 and the touch sensible electrode 20.
Because touch-screen is embedded in the display screen, the utility model embodiment embedded touch-screen shown in Figure 4 also comprises: be positioned at sub-pixel unit 11 and insulator pixel cell 11 and the 3rd insulation course 12 that touches drive electrode 10 on the first substrate 1.
In specific implementation process, by applying constant voltage at touch sensible electrode 20, apply the touch driving voltage at touch drive electrode 10, form electric field between touch sensible electrode 20 and the touch drive electrode 10, realize touch function.
Described first substrate can be array base palte, and described second substrate can be color membrane substrates.
The screen layer that the utility model embodiment provides can be arranged on the first substrate and also can be arranged on the second substrate.
Embedded touch-screen shown in Figure 4, screen layer 40 is arranged on the second substrate, is positioned on the touch sensible electrode 20 side towards liquid crystal layer 3;
When not having other retes between screen layer 40 and the liquid crystal layer 3, described screen layer 40 is arranged on the second substrate, is positioned on the touch sensible electrode 20 and liquid crystal layer 3 contacted sides.
Described embedded touch-screen shown in Figure 4 also comprises: the first insulation course 21, and between touch sensible electrode 20 and screen layer 40.
Referring to Fig. 5, the embedded touch-screen that the utility model the first embodiment provides, screen layer 40 is arranged on the first substrate, be positioned on the drive electrode that touches 10 towards a side of liquid crystal layer 3;
In like manner, when not having other retes between screen layer 40 and the liquid crystal layer 3, described screen layer 40 is arranged on the first substrate, be positioned on the drive electrode that touches 10 with liquid crystal layer 3 contacted sides.
Described embedded touch-screen shown in Figure 5 also comprises: the second insulation course 14 is touching between drive electrode 10 and the screen layer 40.
Because described screen layer is to touch the electric field that produces between the equitant zone of in vertical direction projection between drive electrode and the touch sensible electrode for shielding, also namely over against electric field.Electric field line as shown in Figure 3 is the electric field shown in the straight line.
When Fig. 4 and embedded touch-screen shown in Figure 5, for in the LCDs that is embedded in the TN pattern time, public electrode is arranged on the second substrate of embedded touch-screen (also being upper substrate), in order to improve the touch sensible effect of embedded touch-screen, the touch sensible electrode that is positioned on the second substrate is positioned at the public electrode top away from a side of liquid crystal layer, and insulate mutually with public electrode.In order to guarantee that the electric field that touches between drive electrode and the touch sensible electrode is not shielded by public electrode as far as possible, public electrode can be set to have the conductive film layer of certain slit.
Certainly, when embedded touch-screen be that touching drive electrode and touch sensible electrode can be arranged on the first substrate simultaneously when being embedded in the LCDs of TN pattern.In like manner, public electrode can be set to have the conductive film layer of certain slit, so that the projection electric field that touches between drive electrode and the touch sensible electrode is responded to by finger by the slit of public electrode as much as possible, realizes the touch function of better effect.Touching drive electrode and touch sensible electrode can be arranged on the second substrate simultaneously, and public electrode is arranged on the second substrate near the position of liquid crystal layer, touches drive electrode and touch sensible electrode and is arranged on the second substrate position away from liquid crystal layer.That is to say, touch drive electrode and touch sensible electrode between second substrate and public electrode, at this moment, public electrode can be the conductive layer conductive layer of any pattern (or without) without slit.
When embedded touch-screen that the utility model embodiment provides is that public electrode is arranged on the first substrate when being integrated in the LCDs of ADS pattern.Be arranged on the different substrates with the touch sensible electrode when touching drive electrode, and public electrode is when touching between drive electrode and the touch sensible electrode, public electrode can be set to have the conductive film layer of slit-shaped, so that the projection electric field that touches between drive electrode and the touch sensible electrode is responded to by finger by the slit of public electrode as much as possible, realize the touch function of better effect.When perhaps public electrode was between second substrate and touch drive electrode and/or touch sensible electrode, public electrode preferably was set to have the conductive film layer of slit-shaped.
No matter be for the LCDs of TN pattern or for the LCDs of ADS pattern, screen layer is preferably disposed on and touches vertical overlapping corresponding position between drive electrode and the touch sensible electrode.
Referring to Fig. 4 or Fig. 5, screen layer 40 be arranged on touch sensible electrode 20 under, that is to say that screen layer 40 is arranged at and touches vertical overlapping corresponding position between drive electrode 10 and the touch sensible electrode 20.So-called vertical overlapping face also namely touches drive electrode 10 and the equitant zone of in vertical direction projection of touch sensible electrode 20.
In order to be illustrated more clearly in the relative position between screen layer and touch drive electrode and the touch sensible electrode, illustrate below by specific embodiment.Take the LCDs of ADS pattern as the example explanation.
Fig. 6 to Figure 11, be provided with the schematic top plan view of the embedded touch-screen of screen layer 40 for the utility model, this Fig. 6 only illustrates the relative position between screen layer 40 and touch drive electrode 10 and the touch sensible electrode 20, and the concrete structure of embedded touch-screen is not described.
Embodiment one:
Referring to Fig. 6 and Fig. 7, touch drive electrode 10 is the public electrode on the first substrate 1.
In the specific embodiment process, the public electrode time-sharing multiplex is when at the image display time interval, for described public electrode applies common electrode signal; In the touch-control time period, for applying to touch, described public electrode drives signal.Public electrode participates in realizing different functions in the different periods.
Fig. 6 is different with touch sensible electricity 20 shapes shown in Figure 7, and the touch sensible electrode shape that Fig. 6 is corresponding is simpler.
Public electrode (touch drive electrode) 10 is divided into a plurality of strip shaped electric poles, and the width of each the strip public electrode 10 touch sensible electrode of comparing is wider.
The strip shaped electric poles of the described touch sensible electrode 20 of Fig. 6 for having one fixed width.Touch sensible electrode 20 shown in Figure 7 comprises a plurality of vertical touch sensible sub-electrodes 202; Touch sensible sub-electrode 202 can be arranged on the zone corresponding with black matrix" on the second substrate; Comprise that also horizontal touch sensible sub-electrode 201(is shown in the dotted line that seals among Fig. 7), laterally touch sensible sub-electrode 201 can be arranged on the zone corresponding with the grid line of horizontally set.Touch sensible electrode 20 does not affect the aperture opening ratio of pixel like this.
Among Fig. 6 and Fig. 7, the pattern that screen layer 40 can be set is the pattern of touch sensible electrode, and screen layer 40 is arranged on the position corresponding with touch sensible electrode 20.Also be screen layer 40 the projection on the common electrode layer and the projection of touch sensible electrode 20 on public electrode overlapping (induction electrode 20 that is touched of the screen layer among Fig. 6 and Fig. 7 hides, and embodies).The corresponding touch sensible electrode of pattern among Fig. 7 in the dotted line frame.
Preferably, referring to Fig. 8, be the schematic top plan view of the embedded touch-screen corresponding with Fig. 6.When screen layer is arranged on touch sensible electrode 20 and touches drive electrode 10 position corresponding in vertically superposed zone, the area of screen layer can be slightly larger than with touch sensible electrode 20 and touch area corresponding to drive electrode 10 overlapping region in the vertical direction, with avoid screen layer may not shield touch sensible electrode 20 fully and touch between the drive electrode 10 over against electric field.But, might hang down the aperture opening ratio of embedded touch-screen pixel like this.
In specific implementation process, the rete of appropriate pattern is set in light of the circumstances so that screen layer can satisfy to greatest extent fully shielding touch induction electrode and touch between the drive electrode over against electric field, satisfy again the requirement of pixel high aperture.
Embodiment two:
Referring to Fig. 9, touch drive electrode 10 for being independent of the strip shaped electric poles such as public electrode, grid line or data line on the first substrate 1, touch sensible electrode 20 also is strip shaped electric poles.
Referring to Figure 10, be the screen layer 40 that between touch drive electrode 10 shown in Figure 9 and touch sensible electrode 20, arranges.Screen layer 40 only is arranged on touch sensible electrode 20 and touches drive electrode 10 in corresponding position, vertically superposed zone.
As shown in figure 11, the touch drive electrode 10 shown in embodiment two Fig. 9 can also be to be connected with the grid line that touches the drive electrode unit; Screen layer is arranged at and touches vertical overlapping corresponding position with the touch sensible electrode, drive electrode unit 101 (embodying among Figure 11).
Touch drive electrode unit 101 shown in Figure 11 can arrange with layer with grid line, also can be the different layers setting.When touch drive electrode unit 101 can arrange with layer with grid line, touch the non-display area that drive electrode unit 101 is arranged between the viewing area, adjacent subpixels unit.
When touching drive electrode unit 101 and can arrange with the grid line different layers, for example touch drive electrode unit 101 can with first substrate 1 on SD(source-drain electrode layer) layer arranges with layer.
Preferably, the screen layer that the utility model embodiment provides can be metallic diaphragm, as being the rete identical with materials such as grid line or data lines; Also can be metal oxide layer, such as indium tin oxide ITO rete.
Preferably, for the aperture opening ratio that do not affect pixel and transmitance of light etc., screen layer is transparent metal oxide layer, such as the ITO rete.
Specify the principle that the utility model embodiment one and embodiment two can improve touch-screen touch-control effect below in conjunction with accompanying drawing.
Can't avoid touching excessive over against (vertical direction) overlapping area between drive electrode and the touch sensible electrode in the In cell touch screen structure design.Can cause over against electric capacity over against overlapping area.By the principle of touch screen touch point shown in Figure 1 location as can be known.Cause over against electric capacity over against overlapping area, the touch point is located without any Beneficial Effect.This be because, the touch displaying principle is, when the finger touches touch-screen, finger can affect the electric field between adjacent touch drive electrode and the touch sensible electrode, touch detecting apparatus is by the variation of the electric current that the electric field between adjacent touch drive electrode and the touch sensible electrode is corresponding before and after the detection finger touch, the position of detected touch point.And touch can't project outside the touch-screen over against electric field between drive electrode and the touch sensible electrode, finger can not change touch between drive electrode and the touch sensible electrode over against electric field.
But, initial current before the finger touches screen that electric field between adjacent touch drive electrode and the touch sensible electrode detects touch detecting apparatus has contribution, so that initial current is too large, when initial electric current too large, the initial current variation that the touch point causes just seems very little, to such an extent as to touch detecting apparatus can't accurately detect the variation of electric current, cause the touch point bearing accuracy to descend, the touch-control effect descends.
Such as Figure 12, the utility model embodiment is by being arranged at the screen layer that touches between drive electrode and the touch sensible electrode, falling over against electric field shielding between drive electrode and the touch sensible electrode will be touched, reduce the front initial current of finger touches screen that touch detecting apparatus detects, improve the change ratio of electric current before and after touching, thereby improve the touch-control effect.
The utility model realizes touching drive electrode by public electrode or grid line.The function that realizes simultaneously that in order not affect embedded touch-screen image shows, the embedded touch-screen that the utility model embodiment provides by the mode that timesharing drives, realizes that image shows and touch function.
Take the touch drive electrode as grid line as the example explanation.
Referring to Figure 13, be to realize that image shows and the sequential chart of touch function, specify the principle of work of the embedded touch-screen that the utility model embodiment provides.
Among Figure 13, Vsync 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.
M bar touch drive electrode (T1, T2 ..., sequential Tm), and m bar touch sensible electrode (R1, R2 ..., sequential Rm).
Such as Figure 12, front 11.7ms is followed successively by grid line and applies gate voltage, is followed successively by simultaneously data line and applies data-signal.For public electrode (touch drive electrode) applies certain constant voltage, realize that image shows.
After a two field picture has shown, before the next frame image shows, be that grid line, data line apply low level signal in the 5ms, so that the TFT that links to each other with grid line turn-offs.Be followed successively by public electrode (touch drive electrode) and apply certain touch driving voltage V
1, and apply constant voltage V for the touch sensible electrode simultaneously
0Be applied with voltage V
0The touch sensible electrode and be applied with voltage V
1The touch drive electrode between 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 one by one example 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 part technological process that the embedded touch-screen that following simple declaration the utility model embodiment provides is made.
The embedded touch-screen technological process of different structure is distinguished to some extent.
1) touch drive electrode and touch sensible electrode and be arranged on the first substrate, and when touching drive electrode and being grid line, screen layer and SD layer arrange with layer.
The touch sensible electrode can be arranged on and be positioned on the passivation layer of TFT outermost layer for the protection of TFT, and at this moment, as the insulation course of insulation touch sensible electrode and screen layer, gate insulator touches the insulation course of drive electrode and screen layer to passivation layer as insulation simultaneously.
Screen layer and SD layer arrange with layer, and the material that forms is identical, that is to say, when making the SD layer pattern, use simultaneously the mask pattern of screen layer to form the screen layer with certain pattern.And guarantee that screen layer insulate mutually with the SD layer.Can simplify like this structure of embedded touch-screen, not increase technological process.
2) touch drive electrode and touch sensible electrode and be arranged on the second substrate, the touch drive electrode is public electrode (being arranged on the LCDs of the TN pattern on the second substrate for public electrode).
Screen layer is arranged on and touches between drive electrode and the second substrate, screen layer and the insulation course that touches between the drive electrode can be the insulation course between public electrode and second substrate on the second substrate, need not to arrange again a layer insulating, can save technological process.
Screen layer also can be existing screen layer for shield electromagnetic signals on the LCDs second substrate.
The touch sensible electrode is arranged between screen layer and the second substrate.
3) touch drive electrode and be arranged on the first substrate, the touch sensible electrode is arranged on the second substrate, and the touch drive electrode is public electrode (being arranged on the LCDs of the ADS pattern on the first substrate for public electrode).
Screen layer can be arranged on the conductive layer on the TFT passivation layer.Passivation layer is as the insulation course of insulation screen and touch drive electrode.Save the insulation course that insulation screen is set separately and touches drive electrode, simplified touch-screen technique, saved technological process.
Above-mentioned three kinds of situations only are to illustrate the utility model embodiment utility model order, the utility model touches drive electrode, touch sensible electrode, screen layer, insulation screen and touch drive electrode, and the insulation course between insulation screen and the touch sensible electrode, can be conductive film layer or the insulation course that is arranged on separately on the substrate, also can be for realizing the structure rete that image shows in the available liquid crystal display screen, the specific implementation process is different and different according to touch screen structure.When in adopting the available liquid crystal display screen, realizing structure rete that image shows, can timesharing drive and realize that image shows and touch function, or shielding both simplifies touch screen structure over against the function of electric field, also reduced wiring, reduced device cost.
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.
A kind of embedded touch-screen that the utility model embodiment provides, by between touch sensible electrode and touch drive electrode, screen layer being set, the touch sensible electrode and touch between the drive electrode over against the electric field conductively-closed, reduce the mutual capacitance between touch sensible electrode and the touch drive electrode, reduce the initial probe value (also being initial current value) of touch detecting apparatus, improve the accuracy that touch detecting apparatus detects the touch point, thereby improve the touch-control effect of touch-screen.
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 (12)
1. embedded touch-screen comprises many touch drive electrodes that arrange along first direction, and the touch sensible electrode of the second direction setting that intersects of many edges and first direction; It is characterized in that, also comprise:
Be used for the vertically screen layer with certain pattern over against electric field between overlapping of shielding touch drive electrode and touch sensible electrode between described touch drive electrode and the touch sensible electrode.
2. embedded touch-screen according to claim 1 is characterized in that, described screen layer is arranged at and vertical overlapping the corresponding position with the touch sensible electrode of described touch drive electrode.
3. 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 the second substrate, described touch drive electrode is arranged on the described first substrate, and described touch sensible electrode is arranged on the described second substrate; Described screen layer is arranged on first substrate or the second substrate.
4. embedded touch-screen according to claim 3, it is characterized in that, described screen layer is arranged on the second substrate, described screen layer is positioned on the described touch sensible electrode side towards described liquid crystal layer, described embedded touch-screen also comprises: the first insulation course, and between described touch sensible electrode and described screen layer.
5. embedded touch-screen according to claim 3, it is characterized in that, described screen layer is arranged on the first substrate, described screen layer is positioned on the described touch drive electrode side towards described liquid crystal layer, described embedded touch-screen also comprises: the second insulation course, and between described touch drive electrode and described screen layer.
6. according to claim 4 or 5 described embedded touch-screens, it is characterized in that described touch drive electrode is grid line;
Described touch drive electrode comprises the strip drive electrode unit of a plurality of vertical distributions, and described touch drive electrode links to each other with described grid line;
Described screen layer is arranged at and described touch drive electrode unit and vertical overlapping corresponding position with the touch sensible electrode.
7. embedded touch-screen according to claim 6 is characterized in that, described the second insulation course is the passivation layer on the first substrate, and described screen layer is arranged at described passivation layer top towards a side of described liquid crystal layer.
8. according to claim 4 or 5 described embedded touch-screens, it is characterized in that described touch drive electrode is public electrode; The pattern of described screen layer equals or is slightly larger than the pattern of described touch sensible electrode.
9. embedded touch-screen according to claim 3 is characterized in that, described touch sensible electrode comprises vertical touch sensible sub-electrode of a plurality of vertical settings and the horizontal touch sensible sub-electrode of horizontally set.
10. embedded touch-screen according to claim 9, it is characterized in that, described vertical touch sensible sub-electrode is arranged at the zone corresponding with the black matrix" on the second substrate, and described horizontal touch sensible sub-electrode places the zone corresponding with the grid line on the first substrate.
11. embedded touch-screen according to claim 1 is characterized in that, described screen layer is metallic diaphragm or transparent conductive oxide rete.
12. a display device is characterized in that, comprises the described embedded touch-screen of the arbitrary claim of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220558036.8U CN202854766U (en) | 2012-10-26 | 2012-10-26 | Embedded touch screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220558036.8U CN202854766U (en) | 2012-10-26 | 2012-10-26 | Embedded touch screen and display device |
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| CN202854766U true CN202854766U (en) | 2013-04-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937845A (en) * | 2012-10-26 | 2013-02-20 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
| CN104217692A (en) * | 2014-08-29 | 2014-12-17 | 京东方科技集团股份有限公司 | Embedded touch control display device and driving method thereof |
| CN105183265A (en) * | 2015-11-04 | 2015-12-23 | 重庆京东方光电科技有限公司 | Touch screen, display device and touch screen manufacturing method |
| WO2016101511A1 (en) * | 2014-12-24 | 2016-06-30 | 京东方科技集团股份有限公司 | Embedded touch display screen and display device |
-
2012
- 2012-10-26 CN CN201220558036.8U patent/CN202854766U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937845A (en) * | 2012-10-26 | 2013-02-20 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
| CN104217692A (en) * | 2014-08-29 | 2014-12-17 | 京东方科技集团股份有限公司 | Embedded touch control display device and driving method thereof |
| WO2016101511A1 (en) * | 2014-12-24 | 2016-06-30 | 京东方科技集团股份有限公司 | Embedded touch display screen and display device |
| US10459563B2 (en) | 2014-12-24 | 2019-10-29 | Boe Technology Group Co., Ltd. | In-cell touch display screen and display device |
| CN105183265A (en) * | 2015-11-04 | 2015-12-23 | 重庆京东方光电科技有限公司 | Touch screen, display device and touch screen manufacturing method |
| CN105183265B (en) * | 2015-11-04 | 2017-03-08 | 重庆京东方光电科技有限公司 | Touch screen, display device and touch screen manufacture method |
| US10114504B2 (en) | 2015-11-04 | 2018-10-30 | Boe Technology Group Co., Ltd. | Touch screen, display device and fabrication method of touch screen |
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