CN104375679A - Touch display panel, touch detection method and electronic device - Google Patents
Touch display panel, touch detection method and electronic device Download PDFInfo
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- CN104375679A CN104375679A CN201310347136.5A CN201310347136A CN104375679A CN 104375679 A CN104375679 A CN 104375679A CN 201310347136 A CN201310347136 A CN 201310347136A CN 104375679 A CN104375679 A CN 104375679A
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Abstract
A touch display panel comprises a plurality of scanning lines, a plurality of data lines and a touch electrode layer. The scanning lines and the data lines coordinate to display an image. The touch electrode layer coordinates with the scanning lines and the data lines to detect a touch signal. At least one of the scanning lines, the data lines and the touch electrode layer contains graphene. According to the touch display panel, a touch detection method and an electronic device with the touch display panel, the scanning lines and the data lines coordinate with the touch electrode layer to detect the touch signal, and a touch control function is achieved with no need for extra touch panels.
Description
Technical field
The present invention relates to a kind of touch-control display panel, touch detection method and use the electronic installation of this touch-control display panel.
Background technology
The electronic installation at present with touch controllable function more and more receives an acclaim.Wherein, electronic installation generally includes a display panel and a contact panel, by this display panel display frame, realizes touch controllable function by this contact panel.But, although this kind of method can make electronic installation have touch controllable function, be unfavorable for that electronic installation realizes light, thinning.
Summary of the invention
In view of above content, be necessary to provide a kind of touch-control display panel.This touch-control display panel comprises multi-strip scanning line, a plurality of data lines and touch control electrode layer.Described multi-strip scanning line coordinates to show image with a plurality of data lines.Described touch control electrode layer coordinates described sweep trace and data line to detect touching signals.In described sweep trace, data line and touch control electrode layer, at least one comprises Graphene.
There is a need to the touch detection method that a kind of touch-control display panel is provided.The method comprises: the first touching signals is sent to described touch control electrode layer, and described each sweep trace is the first touching signals described in coupled sense successively, and detects the sweep trace that capacitance variations occurs; Second touching signals continues to be sent to described touch control electrode layer, and described each data line is the second touching signals described in coupled sense successively, and detects the data line that capacitance variations occurs; And using the sweep trace detecting capacitance variations as signalling, send the 3rd touching signals successively to those sweep traces, simultaneously, to detect the data line of capacitance variations as receiving side signal, by those data lines respectively described in coupled sense as the 3rd touching signals that the sweep trace of signalling sends, and the intersection point of the sweep trace and data line that obtain capacitance variations is as touch point.
There is a need to the touch detection method that a kind of touch-control display panel is provided.The method comprises: the first touching signals is sent to described touch control electrode layer, and described each sweep trace is the first touching signals described in coupled sense successively, and detects the sweep trace that capacitance variations occurs; Second touching signals continues to be sent to described touch control electrode layer, and described each data line is the second touching signals described in coupled sense successively, and detects the data line that capacitance variations occurs; And using the data line detecting capacitance variations as signalling, send the 3rd touching signals successively to those data lines, simultaneously, to detect the sweep trace of capacitance variations as receiving side signal, by those sweep traces respectively described in coupled sense as the 3rd touching signals that the data line of signalling sends, and the intersection point of the sweep trace and data line that obtain capacitance variations is as touch point.
There is a need to provide a kind of electronic installation.This electronic installation comprises backlight module, housing and described touch-control display panel.Described touch-control display panel and backlight module are contained in described housing.Described backlight module is accommodated in the enclosure space that described housing and touch-control display panel formed.
Compared to prior art, touch-control display panel provided by the present invention, touch detection method and use the electronic installation of this touch-control display panel to utilize sweep trace to coordinate touch control electrode layer to detect touching signals with data line, do not need extra contact panel to realize touch controllable function.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electronic installation that the specific embodiment of the invention provides.
Fig. 2 is the diagrammatic cross-section along V-V line of cut in Fig. 1.
Fig. 3 is the schematic diagram of the touch-control display panel that first embodiment of the invention provides.
Fig. 4 is the schematic diagram of the liquid crystal indicator that second embodiment of the invention provides.
Fig. 5 is the schematic diagram of the liquid crystal indicator that third embodiment of the invention provides.
Fig. 6 is the process flow diagram of the method for detecting of the touch-control display panel that the specific embodiment of the invention provides.
Fig. 7 to Figure 10 is the schematic diagram using method for detecting of the present invention to realize touch detection.
Figure 11 is the process flow diagram of another embodiment of the method for detecting of touch-control display panel provided by the present invention.
Main element symbol description
| Electronic installation | 100 |
| Touch-control display panel | 1 |
| Backlight module | 2 |
| Housing | 3 |
| Protective seam | 11、21 |
| Upper polaroid | 12、22 |
| Electrode layer | 13、23、33 |
| Subtend substrate | 14、34 |
| Liquid crystal layer | 15 |
| Array base palte | 16 |
| Sweep trace | 161、161a、161b、161c、161d、161e、161f、161g |
| Data line | 162、162a、162b、162c、162d、162e、162f、162g |
| Gate insulator | 163 |
| Public electrode | 164 |
| Passivation layer | 165 |
| Lower polaroid | 17 |
| First direction | D1 |
| Second direction | D2 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
As shown in Figures 1 and 2, the electronic installation 100 that the specific embodiment of the invention provided comprises touch-control display panel 1, backlight module 2 and housing 3.Described touch-control display panel 1 and backlight module 2 are contained in described housing 3, and wherein, described backlight module 2 is accommodated in the enclosure space that described housing 3 and touch-control display panel 1 formed.Described touch-control display panel 1, for providing display frame, detects the touch operation be applied on described touch-control display panel 1 simultaneously.Described backlight module 2, for providing an area source to described touch-control display panel 1, realizes display frame to assist described touch-control display panel 1.Described housing 3, for being contained in wherein by described touch-control display panel 1 with backlight module 2, is protected described touch-control display panel 1 and backlight module 2 simultaneously.
As shown in Figure 3, the touch-control display panel 1 that first embodiment of the invention provides comprises protective seam 11, upper polaroid 12, touch control electrode layer 13, subtend substrate 14, liquid crystal layer 15, array base palte 16 and lower polaroid 17.
Described array base palte 16 is oppositely arranged with subtend substrate 14, and described liquid crystal layer 15 is arranged between described two substrates.Described subtend substrate 14 is such as a colored filter (Color Filter, CF) substrate.
Described upper polaroid 12 is arranged at the side of described subtend substrate 14 away from described array base palte 16.Described lower polaroid 17 is arranged at the side of described array base palte 16 away from described subtend substrate 14.Described upper polaroid 12 can make polarization direction pass along the light of a certain specific direction.Described lower polaroid 17 can make the light in the direction vertical with the polarization direction of described upper polaroid 12, edge, polarization direction pass.
Described protective seam 11 is arranged at the side of described upper polaroid 12 away from described subtend substrate 14.The material of described protective seam 11 is selected from the polymethylmethacrylate (Polymethylmethacrylate, PMMA) with high rigidity and good transmittance, when not affecting display quality, can play a protective role to described touch-control display panel 1.
Described touch control electrode layer 13 is the film formed by Graphene (Graphene).Use graphene film as touch control electrode layer 13, because its raw material is cheap carbonaceous material, as graphite etc., therefore cost is very low.And this graphene film stable performance, ion diffuse can not be there is, therefore can not cause harmful effect to environment, health and electron device.Meanwhile, this graphene film has excellent electric conductivity, and its conductivity can reach 200 ~ 2000S/cm(200 ~ 2000 Siemens/cm).In addition, when ensureing this good electric conductivity, this graphene film is extremely low to the absorptivity of light, is only about 2%, far below 15% ~ 18% of common indium tin oxide films, and indium tin oxide films then must sacrifice conductivity to reach identical permeability.The transmittance of the graphene film used in present embodiment can reach more than 70%, has higher light utilization.In the present embodiment, described touch control electrode layer 13 is arranged between described upper polaroid 12 and described first substrate 14.
Described array base palte 16 comprises data line 162, gate insulator 163, public electrode 164 and the passivation layer 165 that many sweep traces 161 along first direction arrangement, many edges second direction vertical with described first direction arranges.Described sweep trace 161 separates to insulate by described gate insulator 163 with described data line 162 and arranges.Described public electrode 164 separates to insulate by described passivation layer 165 with described data line 162 and arranges.Described sweep trace 161 is made up of the conductive material doped with Graphene with data line 162.The Graphene added can improve the electric conductivity of this sweep trace 161 and data line 162.Described public electrode 164 can be made up of Graphene other transparent conductive material that adulterates, and also can be directly formed by Graphene.This public electrode 164 comprising Graphene has the conductivity better than conventional oxidation indium tin (Indium Tin Oxide, ITO) and transmittance.Be understandable that, described array base palte 16 can also comprise the structure known by the those skilled in the art such as thin film transistor (TFT), pixel electrode, does not repeat them here.
As shown in Figure 4; the touch-control display panel 1 that the touch-control display panel 1 that second embodiment of the invention provides provides with described first embodiment is substantially identical; its difference is, described touch control electrode layer 23 is arranged between described protective seam 21 and described upper polaroid 22.Be understandable that, the assembly that other non-label is described should be identical with the assembly be described with label in described first embodiment, do not repeat them here.
As shown in Figure 5, the touch-control display panel 1 that the touch-control display panel 1 that third embodiment of the invention provides provides with described first embodiment is substantially identical, and its difference is, described touch control electrode layer 33 is arranged in described subtend substrate 34.Similarly, the assembly that other non-label is described should be identical with the assembly be described with label in described first embodiment, do not repeat them here.
As shown in Figure 6, the process flow diagram of the method for detecting of the touch-control display panel provided for the specific embodiment of the invention, the method adopts the self-capacitance detecting scanning be combined with each other to detect with mutual capacitance and scans, wherein, described self-capacitance detecting scanning has been coordinated with described sweep trace 161 and data line 162 respectively by described touch control electrode layer 13, and described mutual capacitance detecting scanning has been coordinated with described data line 162 by described sweep trace 161.Substantially, first the method for detecting of the present invention detects by the self-capacitance of touch control electrode layer 13 respectively and between sweep trace 161 and data line 162 approximate location that Scan orientation goes out touch point, then detects by the mutual capacitance between sweep trace 161 and data line 162 accurate location that Scan orientation goes out touch point.Specifically, the method comprises the steps:
Step S201, the first touching signals is sent to described touch control electrode layer 13, described each sweep trace 161 first touching signals described in coupled sense successively, and detects the sweep trace 161 that capacitance variations occurs.
Understand the present invention for convenience, use touch-control display panel 1 described in three finger touch with user and the situation forming 3 real touch point A is illustrated at this.As shown in Figure 7, by between described touch control electrode layer 13 and described sweep trace 161 form electric capacity changing value detect touch point A along the position coordinates on first direction D1.Particularly, first touching signals of described each sweep trace 161 successively on touch control electrode layer 13 described in coupled sense, to detect sweep trace 161c, 161d, 161e that capacitance variations occurs, the position residing for above-mentioned 3 sweep traces 161c, 161d, 161e and these 3 touch point A of definable position coordinates in the first direction dl.
Step S202, the second touching signals continues to be sent to described touch control electrode layer 13, described each data line 162 second touching signals described in coupled sense successively, and detects the data line 162 that capacitance variations occurs.
As shown in Figure 8, similar with step S201, by between described touch control electrode layer 13 and described data line 162 form electric capacity changing value can detect touch point A further along the position coordinates on second direction D2.Particularly, second touching signals of described each data line 162 successively on touch control electrode layer 13 described in coupled sense, to detect data line 162c, 162d, 162e that capacitance variations occurs, the position residing for above-mentioned 3 data lines 162c, 162d, 162e and these 3 touch point A of definable position coordinates in a second direction d 2.Now, as shown in Figure 9, sweep trace 161c, 161d, 161e that this gets and data line 162c, 162d, 162e common combination tentatively can determine 3*3 totally 9 touch points, and wherein 3 touch point A are correct touch points, and 6 touch point B are false touch points (also known as terrible point).Therefore, in order to find correct touch point to realize real multi-point touch, also need further to detect.
Step S203, to detect the sweep trace 161 of capacitance variations as signalling, send the 3rd touching signals successively to those sweep traces 161, simultaneously, to detect the data line 162 of capacitance variations as receiving side signal, by those data lines 162 respectively described in coupled sense as the 3rd touching signals that the sweep trace 161 of signalling sends, and the intersection point of the sweep trace 161 and data line 162 that obtain capacitance variations is as touch point A.
Particularly, as shown in Figure 10, first the sweep trace 161c detecting capacitance variations described in the 3rd touching signals to Article 1 is sent, described described 3rd touching signals detected on data line 162c, 162d, 162e difference coupled sense this article of sweep trace 161c of capacitance variations, position due to capacitance variations exists only in A place, this touch point, then can not produce capacitance variations at the B place, touch point of two other falseness, also would not be detected.Like this, just the ghost point detected can be excluded, thus get correct touch point A.Similarly, continue to send the 3rd touching signals successively and detect sweep trace 161d, 161e of capacitance variations to other, and data line 162c, 162d, 162e of detecting capacitance variations described in passing through continue described 3rd touching signals on those sweep traces of difference coupled sense 161d and 161e, can get the touch point A that other is correct.
Like this, after the scanning of described self-capacitance, then detected by the mutual capacitance that described sweep trace 161 and data line 162 are formed and scan, correct touch point A can be got.
Be understandable that, also can exchange between the signalling in the mutual capacitance detecting scanning of described step S203 and receiving side signal.Particularly, as shown in figure 11, in another embodiment, described step S203 also can be: to detect the data line 162 of capacitance variations as signalling, send the 3rd touching signals successively to those data lines 162, simultaneously, to detect the sweep trace 161 of capacitance variations as receiving side signal, by those sweep traces 161 respectively described in coupled sense as the 3rd touching signals that the data line 162 of signalling sends, and the intersection point of the sweep trace 161 and data line 162 that obtain capacitance variations is as touch point A.
The described method for detecting that the specific embodiment of the invention provides has sweep velocity fast.Suppose that along the quantity of the sweep trace 161 of first direction be m, quantity along the data line 162 of second direction is n, the quantity of true touch point is x, the scanning times that then traditional self-capacitance detecting scan method completes touch detection needs is m+n, but terrible point can be produced, can not multi-point touch sensing be realized.And the scanning times that traditional mutual capacitance detecting scan method completes touch detection to be needed is m × n time, multi-point touch sensing can be realized, but need to spend longer sweep time.The scanning times that self-capacitance provided by the present invention completes touch detection need in conjunction with the detecting scan method of mutual capacitance is m+n+x
2, because the quantity of usual true touch point will far below the quantity of sweep trace 161 with data line 162, therefore the sweep velocity of detecting scan method provided by the present invention is far above simple mutual capacitance detecting scanning, and supports multi-point touch sensing.Meanwhile, utilize gate line and data line to serve as touch control electrode, effectively can save the thickness of this touch-control display panel 1.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a touch-control display panel, comprise multi-strip scanning line, a plurality of data lines and touch control electrode layer, described multi-strip scanning line coordinates to show image with a plurality of data lines, described touch control electrode layer coordinates described sweep trace and data line to detect touching signals, and in described sweep trace, data line and touch control electrode layer, at least one comprises Graphene.
2. touch-control display panel as claimed in claim 1, it is characterized in that, described touch control electrode layer comprises Graphene.
3. touch-control display panel as claimed in claim 2, it is characterized in that, described touch-control display panel also comprises public electrode, and this public electrode comprises Graphene.
4. touch-control display panel as claimed in claim 3, it is characterized in that, described touch-control display panel also comprises protective seam, upper polaroid, subtend substrate, liquid crystal layer, array base palte and lower polaroid, described array base palte and subtend substrate are oppositely arranged, described liquid crystal layer is arranged between described array base palte and subtend substrate, described upper polaroid is arranged at the side of described subtend substrate away from described array base palte, described lower polaroid is arranged at the side of described array base palte away from described subtend substrate, described protective seam is arranged at the side of described upper polaroid away from described subtend substrate, described public electrode is arranged at the side of described array base palte near described subtend substrate.
5. touch-control display panel as claimed in claim 4, it is characterized in that, described touch control electrode layer is arranged between described upper polaroid and described subtend substrate.
6. touch-control display panel as claimed in claim 4, it is characterized in that, described touch control electrode layer is arranged between described protective seam and described upper polaroid.
7. the touch-control display panel as described in claim 4, it is characterized in that, described touch control electrode layer is arranged in described subtend substrate.
8. a touch detection method for the touch-control display panel according to any one of claim 1 to 7, the method comprises:
First touching signals is sent to described touch control electrode layer, and described each sweep trace is the first touching signals described in coupled sense successively, and detects the sweep trace that capacitance variations occurs;
Second touching signals continues to be sent to described touch control electrode layer, and described each data line is the second touching signals described in coupled sense successively, and detects the data line that capacitance variations occurs; And
To detect the sweep trace of capacitance variations as signalling, send the 3rd touching signals successively to those sweep traces, simultaneously, to detect the data line of capacitance variations as receiving side signal, by those data lines respectively described in coupled sense as the 3rd touching signals that the sweep trace of signalling sends, and the intersection point of the sweep trace and data line that obtain capacitance variations is as touch point.
9. a touch detection method for the touch-control display panel according to any one of claim 1 to 7, the method comprises:
First touching signals is sent to described touch control electrode layer, and described each sweep trace is the first touching signals described in coupled sense successively, and detects the sweep trace that capacitance variations occurs;
Second touching signals continues to be sent to described touch control electrode layer, and described each data line is the second touching signals described in coupled sense successively, and detects the data line that capacitance variations occurs; And
To detect the data line of capacitance variations as signalling, send the 3rd touching signals successively to those data lines, simultaneously, to detect the sweep trace of capacitance variations as receiving side signal, by those sweep traces respectively described in coupled sense as the 3rd touching signals that the data line of signalling sends, and the intersection point of the sweep trace and data line that obtain capacitance variations is as touch point.
10. an electronic installation, comprise backlight module, housing and the touch-control display panel according to any one of claim 1 to 7, described touch-control display panel and backlight module are contained in described housing, and described backlight module is accommodated in the enclosure space that described housing and touch-control display panel formed.
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| CN201310347136.5A CN104375679A (en) | 2013-08-12 | 2013-08-12 | Touch display panel, touch detection method and electronic device |
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| CN201310347136.5A CN104375679A (en) | 2013-08-12 | 2013-08-12 | Touch display panel, touch detection method and electronic device |
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| CN104375679A true CN104375679A (en) | 2015-02-25 |
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| WO2017210984A1 (en) * | 2016-06-06 | 2017-12-14 | 深圳市华星光电技术有限公司 | Pressure-sensing touch-control liquid crystal display device, and manufacturing method thereof |
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