CN104793823A - Mutual-capacitance touch display panel and touch detection method thereof - Google Patents
Mutual-capacitance touch display panel and touch detection method thereof Download PDFInfo
- Publication number
- CN104793823A CN104793823A CN201510191307.9A CN201510191307A CN104793823A CN 104793823 A CN104793823 A CN 104793823A CN 201510191307 A CN201510191307 A CN 201510191307A CN 104793823 A CN104793823 A CN 104793823A
- Authority
- CN
- China
- Prior art keywords
- touch
- display panel
- drive
- mutual capacitance
- touch control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The invention discloses a mutual-capacitance touch display panel and a touch detection method thereof. The touch detection method comprises the steps that a touch drive component generates drive signals to perform touch drive action, wherein the drive signals received by all drive electrodes have non-overlapping frequency bands; induction electrodes and the drive electrodes form capacitors at the cross positions to receive induction signals with the frequency corresponding to the frequency bands, and therefore the mutual-capacitance touch display panel can perform touch positioning according to the variable quantity of the frequency of the induction signals. According to the mutual-capacitance touch display panel and the touch detection method thereof, mutual interference among the drive signals received by all the drive electrodes can be avoided, the phenomena such as ghost points and touch failure are prevented from generating, and the touch effect is good.
Description
Technical field
The present invention relates to liquid panel technique field, be specifically related to touch control detection technical field, particularly relate to a kind of mutual capacitance type touch control display panel and touch control detecting method thereof.
Background technology
Current, the display panel increasing prevalence that touch controllable function is integrated with Presentation Function, it has the advantages such as highly sensitive, response time fast and multi-point touch, the In-cell technology that common mutual capacitance touch-control display panel adopts OGS (One Glass Solution, one chip touch-control) technology, capacitance touch function is embedded into the On-cell technology between colored filter substrate and polaroid and capacitance touch function is embedded in pixel.In the display panel adopting above-mentioned technology, touch-control drive singal is generally time domain driving signal, namely, analysis-driven signal analyzes position of touch in the situation of change of different time, but easily interference mutually between the drive singal that adjacent touch line transmits in the scanning process of same display frame, produce terrible point (ghost) and the phenomenon such as touch-control is malfunctioning, thus affect touch-control effect and the display quality of display panel.
Summary of the invention
The embodiment of the present invention provides a kind of mutual capacitance type touch control display panel and touch control detecting method thereof, to avoid the mutual interference between drive singal, improves touch-control effect.
The embodiment of the present invention provides a kind of touch control detecting method of mutual capacitance type display panel.Described mutual capacitance type touch control display panel comprises along spaced many drive electrodes of predetermined direction, with drive electrode square crossing and spaced many induction electrodes and the touch-control driven unit that is connected with drive electrode, described touch control detecting method comprises: touch-control driven unit produces drive singal to perform touch-control drive actions, and the drive singal that wherein each bar drive electrode receives has non-overlapping frequency range; Induction electrode forms electric capacity to receive the induced signal with the frequency corresponding with frequency range with drive electrode at infall, thus makes mutual capacitance type touch control display panel carry out touch-control location according to the variable quantity of the frequency of induced signal.
Wherein, touch-control driven unit comprises signal generator and bandpass filter, produces drive singal by signal generator, by bandpass filter, drive singal is divided into the wide identical signal of multi-group, and is sent to drive electrode to perform touch-control drive actions.
Wherein, mutual capacitance type touch control display panel comprises the multiple spectrum analyzers connected one to one with many induction electrodes further, is obtained the frequency of the induced signal of the corresponding induction electrode connected by each spectrum analyzer.
Wherein, mutual capacitance type touch control display panel comprises the spectrum analyzer be connected with many induction electrodes further, is obtained the frequency of the induced signal of each bar induction electrode by spectrum analyzer.
Wherein, drive electrode and induction electrode are all in list structure or diamond structure.
The embodiment of the present invention also provides a kind of mutual capacitance type display panel.Described mutual capacitance type touch control display panel comprises along spaced many drive electrodes of predetermined direction, with drive electrode square crossing and spaced many induction electrodes and the touch-control driven unit that is connected with drive electrode, touch-control driven unit for generation of drive singal to perform touch-control drive actions to drive electrode, the drive singal that wherein each bar drive electrode receives has non-overlapping frequency range, induction electrode forms electric capacity to receive the induced signal with the frequency corresponding with described frequency range with drive electrode at infall, thus make display panel carry out touch-control location according to the variable quantity of the frequency of induced signal.
Wherein, touch-control driven unit comprises signal generator and bandpass filter, and signal generator is for generation of drive singal, and bandpass filter is used for drive singal to be divided into the wide identical signal of multi-group, and is sent to drive electrode to perform touch-control drive actions.
Wherein, mutual capacitance type touch control display panel comprises the multiple spectrum analyzers connected one to one with many induction electrodes further, and each spectrum analyzer is for obtaining the frequency of the induced signal of the corresponding induction electrode connected.
Wherein, mutual capacitance type touch control display panel comprises the spectrum analyzer be connected with many induction electrodes further, and spectrum analyzer is for obtaining the frequency of the induced signal of each bar induction electrode.
Wherein, drive electrode and induction electrode are list structure or diamond structure.
The mutual capacitance type touch control display panel of the embodiment of the present invention and touch control detecting method thereof, design the drive singal that each bar drive electrode receives and there is non-overlapping frequency range, namely, by drive singal is carried out frequency range division, make the drive singal of arbitrary neighborhood two row have independently frequency range, thus avoid disturbing between the drive singal of each bar drive electrode, the phenomenon such as avoid producing ghost point and touch-control is malfunctioning, improve multi-point touch sensitivity and touch-control timeliness, touch-control is respond well.
Accompanying drawing explanation
Fig. 1 is the structural representation of mutual capacitance type touch control display panel one embodiment of the present invention;
Fig. 2 is the process flow diagram of touch control detecting method one embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, embodiment described below the present invention is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of mutual capacitance type touch control display panel one embodiment of the present invention.As shown in Figure 1, mutual capacitance type touch control display panel comprises along spaced many drive electrode Y of first direction
1, Y
2..., Y
m, along spaced many induction electrode X of second direction
1, X
2..., X
n, and with many drive electrode Y
1, Y
2..., Y
mthe touch-control driven unit 11 connected, wherein m and n is positive integer.First direction can be horizontal direction and second direction is gravity direction, drive electrode can be list structure and induction electrode is also list structure, or drive electrode can be diamond structure and induction electrode is also diamond structure, such as: the drive electrode of every a line comprises ITO (the Indium Tin Oxides of the multiple rhombuses be set up in parallel in the horizontal direction, tin indium oxide) pattern, and the induction electrode of each row comprises the ITO pattern of the multiple rhombuses be set up in parallel along gravity direction, the ITO pattern be positioned on line direction and column direction is crisscross arranged.
Many drive electrode Y
1, Y
2..., Y
mwith many induction electrode X
1, X
2..., X
nonly have overlapping on a small quantity at infall, and every bar induction electrode and every bar drive electrode form electric capacity (touch control unit) at infall, touch-control driven unit 11 can produce drive singal by built-in signal generator 111, and be applied to each drive electrode to perform touch-control drive actions, thus on every bar induction electrode, induced signal can be obtained by the side direction mutual capacitance coupling between electrode.In the present embodiment, between the drive singal that each bar drive electrode receives, there is non-overlapping frequency range, particularly, the drive singal that signal generator 111 produces is divided into the wide identical signal of multi-group by built-in bandpass filter 112 by touch-control driven unit 11, each group signal is applied to each drive electrode, that is, drive singal is carried out frequency range division by the embodiment of the present invention, makes the drive singal of any a line have independent and different from the drive singal of other row frequency ranges.
When finger touch is to mutual capacitance type touch control display panel, the induction electrode near touch point is affected with being coupled between drive electrode, and the electric capacity between these two electrodes is changed.When detecting mutual capacitance size, horizontal drive electrode receives drive singal successively, longitudinal all induction electrodes receive induced signal simultaneously, all drive electrodes and the induction electrode electric capacity at infall can be obtained like this, i.e. the electric capacity size of whole mutual capacitance type touch control display panel on two dimensional surface.When touch event occurs, point and the electric capacity of local can be caused to diminish close to mutual capacitance type touch control display panel, the frequency of the induced signal obtained changes, according to the variable quantity of the frequency of induced signal, and the comprehensive electric capacity of mutual capacitance type touch control display panel on two dimensional surface, the coordinate of touch point can be calculated.
The present embodiment can obtain the frequency of the induced signal of each bar induction electrode by spectrum analyzer, as shown in Figure 1, and every bar induction electrode X
1, X
2..., X
ncorresponding connection one spectrum analyzer 12, is obtained the frequency of the induced signal of the corresponding induction electrode connected, thus judges touch-control origination point position by each spectrum analyzer 12.Certainly, other embodiments of the present invention only can arrange a spectrum analyzer 12, obtained the frequency of the induced signal of each bar induction electrode by this spectrum analyzer 12, the identification information wherein carried by sensing signal is distinguished induced signal and is belonged to which induction electrode.
The drive singal received due to each bar drive electrode has non-overlapping frequency range, can not disturb between the drive singal of therefore each bar drive electrode, the touch-control self-interference phenomenon (signal disturbing namely between multiple touch point) that conventional Time-domain pulse signal can not only be avoided easily to produce, improves touch-control sensitivity and guarantees it not by the restriction of touch point number; And launch while all drive singal can be realized, improve touch-control timeliness.In addition, above-mentioned design can also avoid ghost point because interference produces and the phenomenon such as touch-control is malfunctioning, thus can improve touch control reliability, improves touch-control effect.
In practical application scene, touch-control driven unit 11 may be implemented as a touch-control and launches IC (Integrated Circuit, integrated circuit), and signal generator 111 and bandpass filter 112 are integrated in this touch-control and launch on IC.Similarly, aforementioned one or more spectrum analyzer 12 also can be integrated in a touch-control and receive on IC,
Fig. 2 is the schematic flow sheet of touch control detecting method one embodiment of the present invention, and the method is used for carrying out touch control detection to the mutual capacitance type touch control display panel shown in Fig. 1.
As shown in Figure 2, the touch control detecting method of the present embodiment comprises:
Step S21: touch-control driven unit produces drive singal to perform touch-control drive actions, and the drive singal that wherein each bar drive electrode receives has non-overlapping frequency range.
Step S22: induction electrode forms electric capacity to receive the induced signal with the frequency corresponding with frequency range with drive electrode at infall, thus makes mutual capacitance type touch control display panel carry out touch-control location according to the variable quantity of the frequency of induced signal.
The touch control detecting method of the present embodiment, can be performed by each structural detail correspondence of above-mentioned mutual capacitance type touch control display panel, the detailed process of this touch control detecting method can consult the aforementioned touch control detection process of mutual capacitance type touch control display panel, repeats no more herein.
In sum, the core object of the embodiment of the present invention is that the drive singal that each bar drive electrode of design receives has non-overlapping frequency range, namely, by drive singal is carried out frequency range division, make the drive singal of arbitrary neighborhood two row have independently frequency range, thus avoid disturbing between the drive singal of each bar drive electrode, the phenomenon such as avoid producing ghost point and touch-control is malfunctioning, improve touch-control sensitivity and touch-control timeliness, touch-control is respond well.
On this basis; the foregoing is only some embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the touch control detecting method of a mutual capacitance type touch control display panel, described mutual capacitance type touch control display panel comprises along spaced many drive electrodes of predetermined direction, with described drive electrode square crossing and spaced many induction electrodes and the touch-control driven unit that is connected with described drive electrode, it is characterized in that, described touch control detecting method comprises:
Described touch-control driven unit produces drive singal to perform touch-control drive actions, and the described drive singal that wherein drive electrode described in each bar receives has non-overlapping frequency range;
Described induction electrode forms electric capacity to receive the induced signal with the frequency corresponding with described frequency range with described drive electrode at infall, thus makes described mutual capacitance type touch control display panel carry out touch-control location according to the variable quantity of the frequency of described induced signal.
2. touch control detecting method according to claim 1, it is characterized in that, described touch-control driven unit comprises signal generator and bandpass filter, described drive singal is produced by described signal generator, by described bandpass filter, described drive singal is divided into the wide identical signal of multi-group, and is sent to described drive electrode to perform described touch-control drive actions.
3. touch control detecting method according to claim 1, it is characterized in that, described mutual capacitance type touch control display panel comprises the multiple spectrum analyzers connected one to one with described many induction electrodes further, is obtained the frequency of the described induced signal of the corresponding described induction electrode connected by spectrum analyzer described in each.
4. touch control detecting method according to claim 2, it is characterized in that, described mutual capacitance type touch control display panel comprises the spectrum analyzer be connected with described many induction electrodes further, is obtained the frequency of the described induced signal of induction electrode described in each bar by described spectrum analyzer.
5. the touch control detecting method according to claim 1-4 any one, is characterized in that, described drive electrode and described induction electrode are all in list structure or diamond structure.
6. a mutual capacitance type touch control display panel, it is characterized in that, described mutual capacitance type touch control display panel comprises along spaced many drive electrodes of predetermined direction, with described drive electrode square crossing and spaced many induction electrodes and the touch-control driven unit that is connected with described drive electrode, described touch-control driven unit for generation of drive singal to perform touch-control drive actions to described drive electrode, the described drive singal that wherein drive electrode described in each bar receives has non-overlapping frequency range, described induction electrode forms electric capacity to receive the induced signal with the frequency corresponding with described frequency range with described drive electrode at infall, thus make described mutual capacitance type touch control display panel carry out touch-control location according to the variable quantity of the frequency of described induced signal.
7. mutual capacitance type touch control display panel according to claim 6, it is characterized in that, described touch-control driven unit comprises signal generator and bandpass filter, described signal generator is for generation of described drive singal, described bandpass filter is used for described drive singal to be divided into the wide identical signal of multi-group, and is sent to described drive electrode to perform described touch-control drive actions.
8. mutual capacitance type touch control display panel according to claim 7, it is characterized in that, described mutual capacitance type touch control display panel comprises the multiple spectrum analyzers connected one to one with described many induction electrodes further, and spectrum analyzer described in each is for obtaining the frequency of the described induced signal of the corresponding described induction electrode connected.
9. mutual capacitance type touch control display panel according to claim 7, it is characterized in that, described mutual capacitance type touch control display panel comprises the spectrum analyzer be connected with described many induction electrodes further, and described spectrum analyzer is for obtaining the frequency of the described induced signal of induction electrode described in each bar.
10. the mutual capacitance type touch control display panel according to claim 6-9 any one, is characterized in that, described drive electrode and described induction electrode are list structure or diamond structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191307.9A CN104793823B (en) | 2015-04-21 | 2015-04-21 | Mutual capacitance type touch control display panel and its touch control detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191307.9A CN104793823B (en) | 2015-04-21 | 2015-04-21 | Mutual capacitance type touch control display panel and its touch control detecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104793823A true CN104793823A (en) | 2015-07-22 |
| CN104793823B CN104793823B (en) | 2018-04-10 |
Family
ID=53558666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510191307.9A Active CN104793823B (en) | 2015-04-21 | 2015-04-21 | Mutual capacitance type touch control display panel and its touch control detecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104793823B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105786284A (en) * | 2016-03-11 | 2016-07-20 | 深圳市华星光电技术有限公司 | Touch control electrode structure and touch screen |
| CN109643184A (en) * | 2016-08-19 | 2019-04-16 | 希迪普公司 | Touch input device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100328239A1 (en) * | 2009-06-29 | 2010-12-30 | Sony Corporation | Touch sensor, display and electronic unit |
| CN102576272A (en) * | 2009-10-08 | 2012-07-11 | 3M创新有限公司 | Multi-touch touch device with multiple drive frequencies and maximum likelihood estimation |
| CN103631463A (en) * | 2012-08-24 | 2014-03-12 | 智点科技（深圳）有限公司 | Digital capacitive touch panel |
| CN103823598A (en) * | 2012-11-16 | 2014-05-28 | 普诚科技股份有限公司 | Touch sensing circuit and touch sensing method |
-
2015
- 2015-04-21 CN CN201510191307.9A patent/CN104793823B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100328239A1 (en) * | 2009-06-29 | 2010-12-30 | Sony Corporation | Touch sensor, display and electronic unit |
| CN102576272A (en) * | 2009-10-08 | 2012-07-11 | 3M创新有限公司 | Multi-touch touch device with multiple drive frequencies and maximum likelihood estimation |
| CN103631463A (en) * | 2012-08-24 | 2014-03-12 | 智点科技（深圳）有限公司 | Digital capacitive touch panel |
| CN103823598A (en) * | 2012-11-16 | 2014-05-28 | 普诚科技股份有限公司 | Touch sensing circuit and touch sensing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105786284A (en) * | 2016-03-11 | 2016-07-20 | 深圳市华星光电技术有限公司 | Touch control electrode structure and touch screen |
| CN109643184A (en) * | 2016-08-19 | 2019-04-16 | 希迪普公司 | Touch input device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104793823B (en) | 2018-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9001080B2 (en) | Touch-panel device | |
| CN106293206B (en) | A kind of integrated touch-control display panel and its touch control display device | |
| EP2811380A2 (en) | Capacitive touch screen | |
| CN106249973B (en) | A kind of In-cell touch panel, its driving method and display device | |
| CN103425317A (en) | Touch sensing device and method for driving the same | |
| US20140327652A1 (en) | Capacitive touch input device | |
| CN103294321A (en) | Touch control display device | |
| CN103294320A (en) | Capacitive touch screen and manufacturing method thereof | |
| CN103309535A (en) | Capacitive touch screen | |
| WO2017020344A1 (en) | Mutual-capacitance touch unit, touch liquid crystal panel, and driving method | |
| CN104571748A (en) | Touch controller, electronic device and display device, and touch sensing method | |
| CN103927065B (en) | Touch screen and method for detecting same | |
| CN106055158A (en) | Touch display panel and driving method thereof | |
| CN202394214U (en) | Sensor, dual-mode touch module and dual-mode touch electronic device | |
| US20140320451A1 (en) | Apparatus and method for detecting adjacent object and method of driving electronic device | |
| CN103902084A (en) | Touch screen and touch detection method thereof | |
| CN105718129A (en) | Touch display panel and driving method thereof | |
| CN102722282A (en) | Touch screen detection method and electronic products | |
| CN102033637A (en) | Touch screen position detection method | |
| CN103941905A (en) | Embedded touch panel | |
| CN101968701B (en) | Touch input device | |
| CN104793823A (en) | Mutual-capacitance touch display panel and touch detection method thereof | |
| CN103699282A (en) | Touch display device | |
| CN103294292B (en) | Touch detection method of capacitive touch screen and capacitive touch screen | |
| US20150153869A1 (en) | Touchscreen device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |