CN203455825U - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
- Publication number
- CN203455825U CN203455825U CN201320614981.XU CN201320614981U CN203455825U CN 203455825 U CN203455825 U CN 203455825U CN 201320614981 U CN201320614981 U CN 201320614981U CN 203455825 U CN203455825 U CN 203455825U
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- touch display
- display panel
- antistatic backing
- controlled switch
- touch
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Abstract
The embodiment of the utility model discloses a touch display panel and a touch display device, relates to the display field and is capable of realizing a function of preventing antistatic damage under a precondition of not influencing a touch function. The touch display panel is provided with a driving electrode, a sensing electrode, an antistatic layer and a controllable switch, wherein the antistatic layer is distributed in an area out of a sensing area on the touch display panel correspondingly, wherein the sensing area comprises an overlapped area between the driving electrode and the sending electrode; and the antistatic layer is grounded through the controllable switch.
Description
Technical field
The utility model relates to demonstration field, relates in particular to a kind of touch display panel and touch display unit.
Background technology
Touch display screen development rapidly, current main-stream product has all adopted the structural design of external touch screen (Add on), but traditional Add on touch-screen, integrated model is thick and heavy, cost is higher, along with the thinning demand of consumer to display, embedded (In Cell) liquid crystal display becomes the direction that touches an important development in demonstration field.
In-Cell refers to touch panel function is embedded into the method in liquid crystal pixel, at liquid crystal cell, is embedded in touch sensor function, can make like this screen become more frivolous.Existing In Cell touch display screen generally adopts capacitance sensing, particularly: touch drive electrode (Tx electrode) and the induction electrode (Rx electrode) realizing touch function and manufacture are set in liquid crystal cell, Tx electrode and Rx electrode are orthogonal, wherein, Tx electrode, by touch-control chip controls, is exported a series of square waves in order one by one; And Rx electrode can, as receiving end, be set to a DC voltage value.When finger is not in LCD screen when touch-control and Tx electrode output pulse, near the overlapping region of Tx electrode and Rx electrode and overlapping region, capacitive coupling between Rx electrode and Tx electrode can make the voltage of Rx fluctuate, and now touch-control chip can think that this kind of fluctuation belongs to the situation that there is no touch-control.When finger touch is in LCD screen, between finger and Tx electrode and finger and Rx electrode, all can form electric capacity, when Tx electrode output pulse, coupling situation between Rx electrode and Tx electrode can change because of above-mentioned electric capacity, thereby difference when making the voltage fluctuation situation on Rx electrode and there is no finger touch, touch-control chip is to determine this difference by algorithm, to reach the object that detects position of touch.
In In Cell touch display screen, for increasing touch sensitivity, Rx electrode operated by rotary motion is on the close color membrane substrates of LCD screen, and the back side of color membrane substrates (away from liquid crystal side) is also provided with the transparency conducting layer (antistatic backing) of ground connection, in order to reduce the impact of static on LCD panel display effect.Inventor finds: antistatic backing can hinder the realization of touch function, affects touch-control sensitivity, if but remove antistatic backing, liquid crystal panel can significantly reduce again the ability to bear of static.
Utility model content
Embodiment of the present utility model provides a kind of touch display panel and touch display unit, can not affect under the prerequisite of touch controllable function, realizes the function of protection static injury.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The utility model provides a kind of touch display panel, is provided with drive electrode and induction electrode, on described touch display panel, is also provided with:
Antistatic backing, correspondence is distributed in the region outside induction zone on described touch display panel, and described induction zone comprises: the overlapping region of described drive electrode and described induction electrode;
Gate-controlled switch, described antistatic backing is by described gate-controlled switch ground connection.
Preferably, at described touch display panel, during in show state, described gate-controlled switch closure makes described antistatic backing ground connection; At described touch display panel, during in touch sensible state, described gate-controlled switch disconnects and makes described antistatic backing in vacant state.
Alternatively, described gate-controlled switch comprises: two terminals, a control end; Terminals in described two terminals are connected with described antistatic backing, another terminals ground connection, and described control end is inputted the first control signal.
Alternatively, described antistatic backing is transparency conducting layer.
Alternatively, described antistatic backing comprises: a plurality of conductive patterns, figure line and be positioned at the periphery lead-in wire at touch display panel edge;
Described in each, conductive pattern is not overlapping with described induction region, and described conductive pattern is all connected to described periphery by described figure line and goes between, and described periphery lead-in wire is connected to described gate-controlled switch.
Alternatively, described periphery lead-in wire is connected to described gate-controlled switch by flexible circuit board or wire.
Further, described touch display panel comprises color membrane substrates, array base palte and is folded in the liquid crystal layer between two substrates;
Described antistatic backing is arranged on described color membrane substrates.
Alternatively, described antistatic backing is arranged on described color membrane substrates the side away from liquid crystal layer.
Alternatively, described induction electrode is arranged on described color membrane substrates, and described drive electrode is arranged on described array base palte.
On the other hand, the present embodiment also provides a kind of touch display unit, comprising: the touch display panel described in any one.
There is overlapping region in drive electrode and the induction electrode of touch display panel, the utility model embodiment arranges antistatic backing in the gap of overlapping region, and described antistatic backing is by gate-controlled switch ground connection, when touch display panel shows charging, by gate-controlled switch, make antistatic backing ground connection, at this moment antistatic backing can play electrostatic-proof function; When touch display panel carries out touch control detection, by gate-controlled switch, control and make antistatic backing become vacant state, at this moment antistatic backing can not stop the detection to finger electric capacity, can touch function not produced and be disturbed yet, therefore, the touch display panel that the utility model embodiment provides and touch display unit, can protect static injury, do not affect again the realization of touch controllable function.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The plan structure schematic diagram of the touch display panel that Fig. 1 provides for the utility model embodiment;
The cross-sectional view of the touch display panel that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the working timing figure of antistatic backing in the utility model embodiment.
Reference numeral
1-drive electrode, 2-induction electrode, 3-antistatic backing, 31-conductive pattern, 32-figure line,
33-periphery lead-in wire, 4-induction zone, 5-flexible circuit board, 10-color membrane substrates, 20-array base palte,
30-sandwiching liquid crystal.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
The utility model embodiment provide a kind of touch display panel (hereinafter to be referred as: touch display panel), shown in Fig. 1,2, on described touch display panel, be provided with drive electrode 1 and induction electrode 2, also be provided with: the antistatic backing 3 of patterning, correspondence is distributed in the region outside induction zone 4 on touch display panel, and described induction zone 4 comprises: the overlapping region of drive electrode 1 and induction electrode 2; Gate-controlled switch (not shown), antistatic backing 3 is by gate-controlled switch ground connection.
In prior art, antistatic backing is for covering the transparent conductive film of whole touch display panel, and antistatic backing ground connection, and antistatic backing is only distributed in beyond induction zone described in the present embodiment, induction zone described herein refers to the region at touch sensor place in touch display panel, include but not limited to refer to the overlapping region of drive electrode 1 and induction electrode 2, the shape of concrete and drive electrode 1 and induction electrode 2, and the distributed areas of the touch sensible field of 2 formation of drive electrode 1 and induction electrode are relevant.In brief, the antistatic backing of the present embodiment is the nesa coating (ITO pattern) of patterning, when antistatic backing is specifically made, can form by deposition and photoetching process, the place beyond drive electrode 1 and induction electrode 2 overlapping regions retains transparent conductive material.
Should be noted: shown in Fig. 1, be only the wherein a kind of antistatic backing pattern that meets the present embodiment, the present embodiment does not limit the concrete figure of drive electrode 1 and induction electrode 2, concrete patterning to antistatic backing 3 does not limit yet, need only antistatic backing 3 not overlapping with induction zone, to reduce the shielding action of 3 pairs of drive electrodes 1 of antistatic backing and induction electrode 2 as far as possible.
Described in the utility model embodiment, antistatic backing, by gate-controlled switch ground connection, when touch display panel shows charging, makes antistatic backing ground connection by gate-controlled switch, and at this moment antistatic backing can play electrostatic-proof function; When touch display panel carries out touch control detection, by gate-controlled switch, control and make antistatic backing become vacant state, be to disconnect between antistatic backing and the earth (or ground signalling line), at this moment antistatic backing can not stop the detection to finger electric capacity, can touch function not produced and be disturbed yet, therefore, the touch display panel that the utility model embodiment provides and touch display unit, can protect static injury, not affect again the realization of touch controllable function.Wherein, vacant state represents that antistatic backing and the external world do not have electric charge to exchange, with any power supply or conductor in off-state.
For those skilled in the art better understand the structure of the touch display panel that the utility model embodiment provides, touch display panel the utility model being provided below by specific embodiment is elaborated.
As shown in Figure 2, touch display panel comprises color membrane substrates 10, array base palte 20 and is folded in the liquid crystal layer 30 between two substrates; The antistatic backing 3 of patterning is arranged on color membrane substrates 10, particularly: antistatic backing 3 is arranged on color membrane substrates 10 side away from liquid crystal layer 30, antistatic backing 3 is positioned at the substrate back (watching side) of color membrane substrates 10, and, antistatic backing 3 correspondences are distributed in the region outside induction zone 4 on touch display panel, and 3 layers of electrostatic preventions are by gate-controlled switch (not shown) ground connection.Touch display panel is also provided with: drive electrode 1 and induction electrode 2, and drive electrode 1 is arranged on array base palte 20, and induction electrode 2 is arranged on color membrane substrates 10.
Wherein, as shown in Figure 1, antistatic backing comprises described in the present embodiment: a plurality of conductive patterns 31, figure line 32 and be positioned at the periphery lead-in wire 33 at touch display panel edge; Each conductive pattern 31 is not overlapping with induction zone, and conductive pattern 31 can be rectangle or other shape, and figure line 32 can be superfine ITO line, and conductive pattern 31 is all connected to periphery lead-in wire 33 by figure line 32, and periphery lead-in wire 33 is connected to gate-controlled switch.
With thinner ITO cabling or metal routing, antistatic backing is connected to periphery lead-in wire, and then can utilizes gate-controlled switch to control the ground connection of antistatic backing and unsettled.The width of ITO cabling or metal routing should guarantee that the coupling capacitance producing because of its existence does not affect normal demonstration and touch controllable function, generally below several micron levels.
Therefore further alternatively, periphery lead-in wire 33 is connected to gate-controlled switch by flexible circuit board 5, and certainly, periphery lead-in wire 33 also can be wired to gate-controlled switch, and now wire can be synchronizeed and be formed by same nesa coating with antistatic backing.
Generally speaking, existing built-in touch display panel, owing to touching measuring ability and Presentation Function, can share public electrode, so Presentation Function and touch sensing function are asynchronous, carry out, touching measuring ability and Presentation Function is mutual realization in time, if touched simultaneously, detect and show, the voltage on public electrode can change because of touch-control change in voltage, thereby the normal demonstration of picture is exerted an influence.For adopting the built-in touch that timesharing drives to show product, the utility model embodiment adopts following solution:
The built-in touch display panel that adopts timesharing to drive, its antistatic backing is by gate-controlled switch ground connection, and touch display panel is when show state, and gate-controlled switch makes antistatic backing 3 ground connection, and antistatic backing 3 can play antistatic protection function; Touch display panel is when touch sensible state, and gate-controlled switch disconnects and makes to disconnect between antistatic backing 3 and the earth (or ground signalling line), and in vacant state, antistatic backing yet can not produce and disturb touch function.
The built-in touch of 60HZ of take shows that product is example, adopt the product of timesharing driving in the frame 16.7ms time, generally speaking, 12ms left and right is used for showing, in the 4ms time, be used for realizing touch function, 12ms at touch display panel in show state is in the time, and gate-controlled switch makes antistatic backing 3 ground connection in closure state; At touch display panel, during in touch sensible state, gate-controlled switch disconnects and makes antistatic backing 3 in vacant state.As shown in Figure 3, be the working timing figure of antistatic backing 3, in the time of the 12ms left and right in show state, antistatic backing 3 ground connection, its voltage is zero; In the time of the 4ms left and right in touch sensible state, antistatic backing 3 is in vacant state.In brief, antistatic backing is controlled ground connection or unsettled by gate-controlled switch, when reading scan, guarantees antistatic backing ground connection; When touch-control scans, guarantee that antistatic backing is unsettled.
Particularly, described in the present embodiment, gate-controlled switch comprises: two terminals, a control end; Terminals in two terminals are connected with antistatic backing, another terminals ground connection, and control end is inputted the first control signal as frame start signal.
Described gate-controlled switch can be the internal semiconductor circuit unit of IC, or the TFT circuit structure by IC signal controlling, the utility model embodiment does not limit the specific implementation of described gate-controlled switch, it can be any implementation well-known to those skilled in the art, for example, described gate-controlled switch can switching diode, or other has the transistor of switching function.Described in while generally speaking, specifically implementing, gate-controlled switch can be Thin Film Transistor (TFT), silicon controlled crystal brake pipe etc.
The touch display panel that the utility model embodiment provides, can not affect under the prerequisite of touch controllable function, has realized electrostatic defending (anti-ESD) function.
The utility model embodiment also provides a kind of display device, and it comprises above-mentioned any one touch display panel.Described display device is not affecting under the prerequisite of touch controllable function, realized electrostatic defending (anti-ESD) function, thereby touch-control is corresponding effective, and more safe and reliable.Described display device can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (10)
1. a touch display panel, is provided with drive electrode and induction electrode, it is characterized in that, on described touch display panel, is also provided with:
The antistatic backing of patterning, described antistatic backing correspondence is distributed in the region outside induction zone on described touch display panel, and described induction zone comprises: the overlapping region of described drive electrode and described induction electrode;
Gate-controlled switch, described antistatic backing is by described gate-controlled switch ground connection.
2. touch display panel according to claim 1, is characterized in that,
At described touch display panel, during in show state, described gate-controlled switch closure makes described antistatic backing ground connection;
At described touch display panel, during in touch sensible state, described gate-controlled switch disconnects and makes described antistatic backing in vacant state.
3. touch display panel according to claim 2, is characterized in that,
Described gate-controlled switch comprises: two terminals, a control end; Terminals in described two terminals are connected with described antistatic backing, another terminals ground connection, and described control end is inputted the first control signal.
4. touch display panel according to claim 1, is characterized in that, described antistatic backing is transparency conducting layer.
5. according to the arbitrary described touch display panel of claim 1-4, it is characterized in that, described antistatic backing comprises: a plurality of conductive patterns, figure line and be positioned at the periphery lead-in wire at touch display panel edge;
Described in each, conductive pattern is not overlapping with described induction zone, and described conductive pattern is all connected to described periphery by described figure line and goes between, and described periphery lead-in wire is connected to described gate-controlled switch.
6. touch display panel according to claim 5, is characterized in that, described periphery lead-in wire is connected to described gate-controlled switch by flexible circuit board or wire.
7. touch display panel according to claim 1, is characterized in that, described touch display panel comprises color membrane substrates, array base palte and is folded in the liquid crystal layer between two substrates;
Described antistatic backing is arranged on described color membrane substrates.
8. touch display panel according to claim 7, is characterized in that,
Described antistatic backing is arranged on described color membrane substrates the side away from liquid crystal layer.
9. touch display panel according to claim 7, is characterized in that,
Described induction electrode is arranged on described color membrane substrates, and described drive electrode is arranged on described array base palte.
10. a touch display unit, is characterized in that, comprising: the touch display panel described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614981.XU CN203455825U (en) | 2013-09-30 | 2013-09-30 | Touch display panel and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614981.XU CN203455825U (en) | 2013-09-30 | 2013-09-30 | Touch display panel and touch display device |
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| Publication Number | Publication Date |
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| CN203455825U true CN203455825U (en) | 2014-02-26 |
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| CN201320614981.XU Expired - Lifetime CN203455825U (en) | 2013-09-30 | 2013-09-30 | Touch display panel and touch display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500044A (en) * | 2013-09-30 | 2014-01-08 | 京东方科技集团股份有限公司 | Touch display panel and touch display device |
| CN109481841A (en) * | 2018-10-29 | 2019-03-19 | 晶晨半导体(上海)股份有限公司 | A method of improving Electro-static Driven Comb performance |
-
2013
- 2013-09-30 CN CN201320614981.XU patent/CN203455825U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500044A (en) * | 2013-09-30 | 2014-01-08 | 京东方科技集团股份有限公司 | Touch display panel and touch display device |
| WO2015043090A1 (en) * | 2013-09-30 | 2015-04-02 | 京东方科技集团股份有限公司 | Touch display panel and touch display device |
| CN103500044B (en) * | 2013-09-30 | 2015-08-12 | 京东方科技集团股份有限公司 | Touch display panel and touch display unit |
| US9544981B2 (en) | 2013-09-30 | 2017-01-10 | Boe Technology Group Co., Ltd. | Touch display panel and touch display apparatus |
| CN109481841A (en) * | 2018-10-29 | 2019-03-19 | 晶晨半导体(上海)股份有限公司 | A method of improving Electro-static Driven Comb performance |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |