CN103631422A - Touch control signal reading method for touch control display device - Google Patents
Touch control signal reading method for touch control display device Download PDFInfo
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- CN103631422A CN103631422A CN201210311339.4A CN201210311339A CN103631422A CN 103631422 A CN103631422 A CN 103631422A CN 201210311339 A CN201210311339 A CN 201210311339A CN 103631422 A CN103631422 A CN 103631422A
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Abstract
The invention discloses a touch control signal reading method for a touch control display device. The method comprises the steps that the touch control display device is provided, wherein the touch control display device comprises a display panel module and a touch control panel module; a plurality of scanning lines for sequentially starting the display panel module are provided; within a certain preset time span after each scanning line is started, the electric potential of a plurality of data lines of the display panel module is controlled to be ground potential, and the touch control panel module is controlled to read touch control signals. According to the touch control signal reading method for the touch control display device, the touch control panel module is prevented from being interfered by signals of the display panel module when reading the touch control signals.
Description
Technical field
The present invention relates to a kind of touching signals read method of touch control display apparatus, particularly relate to a kind of touching signals read method of avoiding the touch control display apparatus of signal interference.
Background technology
Please also refer to Fig. 1 and Fig. 2.Fig. 1 is the schematic diagram of the display module of prior art.Fig. 2 is the schematic diagram of the coherent signal of Fig. 1 display module.As shown in the figure, display module 100 comprises a plurality of picture element P, multi-strip scanning line G1-Gn, and many data line S1-Sn.Display module 100 is from top to bottom sequentially to open each sweep trace G1-Gn.Sweep trace is the picture element P that is coupled to described sweep trace to be electrically connected to data line S1-Sn while being used to open, will show that data are written into the picture element P being coupled on described sweep trace via data line S1-Sn.The common voltage signal Vcom of display module 100 converts one time polarity when a sweep trace of each unlatching, and the polarity of the output signal Vo of data line is contrary with the polarity of common voltage signal Vcom, so the output signal Vo of data line converts one time polarity when a sweep trace of each unlatching.
For instance, when period T1, display module 100 is opened sweep trace G1, now the polarity of common voltage signal Vcom is for just, and the polarity of the output signal Vo of data line is negative, display module 100 writes and shows that data are in a plurality of picture element P that are coupled on sweep trace G1 via data line S1-Sn; And when period T2, display module 100 is opened sweep trace G2, the now reversing of common voltage signal Vcom is for negative, and the reversing of the output signal Vo of data line is for just, display module 100 writes and shows that data are in a plurality of picture element P that are coupled on sweep trace G2, by that analogy via data line S1-Sn.
According to above-mentioned configuration, the output signal Vo of common voltage signal Vcom and the data line interference that can generate electromagnetic waves when reversal.When the display module of prior art and a touch panel module form a touch-control display panel, the touching signals that touch panel module reads is easy to be subject to the Electromagnetic Interference that display module produces, and then affects the accuracy of touching signals.
Summary of the invention
Technical matters to be solved by this invention is: in order to make up the deficiencies in the prior art, provide a kind of touching signals read method of touch control display apparatus.The touching signals read method of described touch control display apparatus comprises provides a touch control display apparatus, described touch control display apparatus to comprise a display module and a touch panel module; Sequentially open the multi-strip scanning line of described display module; And after each sweep trace of described multi-strip scanning line is opened in a schedule time length, the current potential of controlling many data lines of described display module is earthing potential, and controls described touch panel module and read touching signals.
Compared to prior art, the signal that the touching signals read method of touch control display apparatus of the present invention can avoid described touch panel module to be subject to described display module when reading touching signals disturbs.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the display module of prior art.
Fig. 2 is the schematic diagram of the coherent signal of Fig. 1 display module.
Fig. 3 is the schematic diagram of touch control display apparatus of the present invention.
Fig. 4 is the schematic diagram of the coherent signal of Fig. 3 touch control display apparatus.
Fig. 5 is the also schematic diagram of an embodiment of Fig. 3 touch control display apparatus coherent signal.
Fig. 6 is the process flow diagram of the touching signals read method of touch control display apparatus of the present invention.
Wherein, description of reference numerals is as follows:
100,220 display modules
200 touch control display apparatus
210 controllers
230 touch panel modules
232 control chips
G1 to Gn sweep trace
S1 to Sn data line
T1 to the Tn period
P picture element
Vcom common voltage signal
Vo data line output signal
GND earthing potential
Tr schedule time length
HS horizontal-drive signal
VS vertical synchronizing signal
600 process flow diagrams
610 to 660 steps
Embodiment
Please refer to Fig. 3, Fig. 3 is the schematic diagram of touch control display apparatus 200 of the present invention.As shown in Figure 3, touch control display apparatus 200 of the present invention comprises controller 210, one display modules 220, and a touch panel module 230.Touch panel module 230 is that the touch-control input that receives user produces touching signals.When the control chip 232 of touch panel module 230 reads after touching signals, the control chip 232 of touch panel module 230 can convert touching signals to position signalling, and position signalling is sent to controller 210.Controller 210 is in order to produce corresponding instruction according to position signalling, and according to instruction, controls the operation of touch control display apparatus 200, and the operation screen data of touch control display apparatus 200 are sent to display module 220.And the operation screen that display module 220 is the touch control display apparatus 200 in order to controller 210 is transmitted is shown on display module 220, the operation screen that so display module 220 shows can be corresponding to user's touch-control input.
Please refer to Fig. 4, and in the lump with reference to figure 3.Fig. 4 is the schematic diagram of the coherent signal of Fig. 3 touch control display apparatus.As shown in Figure 4, when display module 220 is from top to bottom sequentially opened each sweep trace G1-Gn, for fear of the output signal Vo of common voltage signal Vcom and data line, interfere with the touching signals of touch panel module 230, the controller 210 of touch control display apparatus 200 of the present invention can preset a schedule time length T r, and the data of schedule time length T r are sent to display module 220, the schedule time length T r that display module 220 is set according to controller 210 again and display module 220 horizontal-drive signal HS and vertical synchronizing signal VS own operate, the current potential of controlling common voltage signal Vcom and data line S1-Sn after each sweep trace G1-Gn is unlocked in schedule time length T r of take is earthing potential GND (even if also the current potential of the output signal Vo of data line S1-Sn is earthing potential GND), and the horizontal-drive signal HS that controller 210 can be simultaneously transmits according to schedule time length T r and display module 220 and/or vertical synchronizing signal VS control touch panel module 230 and read touching signals in schedule time length T r.
For instance, at a picture frame in the display cycle, display module 220 is when period T1, to open sweep trace G1, and the sweep trace G1 current potential that display module 220 is controlled common voltage signal Vcom in schedule time length T r after being unlocked is earthing potential GND, and controlling all current potentials of (or most of) data line S1-Sn is also earthing potential GND, the horizontal-drive signal HS that this Time Controller 210 can transmit according to display module 220 and/or vertical synchronizing signal VS learn that sweep trace G1 is unlocked, and control touch panel module 230 and read touching signals in schedule time length T r.Afterwards, at sweep trace G1, be unlocked after schedule time length T r, display module 220 writes and shows that data are in the picture element P being coupled on sweep trace G1 via data line S1-Sn again.Next, display module 220 is opened sweep trace G2 when period T2, and the sweep trace G2 current potential that display module 220 is controlled common voltage signal Vcom in schedule time length T r after being unlocked is earthing potential GND, and controlling all current potentials of (or most of) data line S1-Sn is also earthing potential GND, the horizontal-drive signal HS that this Time Controller 210 can transmit according to display module 220 and/or vertical synchronizing signal VS learn that sweep trace G2 is unlocked, and control touch panel module 230 and read touching signals in schedule time length T r.Afterwards, at sweep trace G2, be unlocked after schedule time length T r, display module 220 writes and shows that data are in the picture element P being coupled on sweep trace G2, by that analogy via data line S1-Sn again, until when period Tn, open the last item sweep trace Gn, and carry out above-mentioned same flow process.When showing that data are written into after the picture element P being coupled on sweep trace Gn completely, touch control display apparatus 200 can repeat above-mentioned steps in the next picture frame display cycle.
Please refer to Fig. 5, and in the lump with reference to figure 3.Fig. 5 is the also schematic diagram of an embodiment of Fig. 3 touch control display apparatus coherent signal.As shown in Figure 5, the common voltage signal Vcom of display module 220 can be direct current signal, and the output signal Vo of data line converts one time polarity when a sweep trace of each unlatching.Similarly, for fear of the output signal Vo of data line, interfere with the touching signals of touch panel module 230, the controller 210 of touch control display apparatus 200 of the present invention can preset schedule time length T r, and the data of schedule time length T r are sent to display module 220, the schedule time length T r that display module 220 is set according to controller 210 again and display module 220 horizontal-drive signal HS and vertical synchronizing signal VS own operate, the current potential of controlling data line S1-Sn after each sweep trace G1-Gn is unlocked in schedule time length T r of take is earthing potential, and the horizontal-drive signal HS that controller 210 can be simultaneously transmits according to schedule time length T r and display module 220 and/or vertical synchronizing signal VS control touch panel module 230 and read touching signals in schedule time length T r.
For instance, at a picture frame in the display cycle, display module 220 is when period T1, to open sweep trace G1, and the sweep trace G1 current potential that display module 220 is controlled all (or most of) data line S1-Sn in schedule time length T r after being unlocked is earthing potential GND, the horizontal-drive signal HS that this Time Controller 210 can transmit according to display module 220 and/or vertical synchronizing signal VS learn that sweep trace G1 is unlocked, and control touch panel module 230 and read touching signals in schedule time length T r.Afterwards, at sweep trace G1, be unlocked after schedule time length T r, display module 220 writes and shows that data are in the picture element P being coupled on sweep trace G1 via data line S1-Sn again.Next, display module 220 is opened sweep trace G2 when period T2, and the sweep trace G2 current potential that display module 220 is controlled all (or most of) data line S1-Sn in schedule time length T r after being unlocked is earthing potential, the horizontal-drive signal HS that this Time Controller 210 can transmit according to display module 220 and/or vertical synchronizing signal VS learn that sweep trace G2 is unlocked, and control touch panel module 230 and read touching signals in schedule time length T r.Afterwards, at sweep trace G2, be unlocked after schedule time length T r, display module 220 writes and shows that data are in the picture element P being coupled on sweep trace G2, by that analogy via data line S1-Sn again, until when period Tn, open the last item sweep trace Gn, and carry out above-mentioned same flow process.When showing that data are written into after the picture element P being coupled on sweep trace Gn completely, touch control display apparatus 200 can repeat above-mentioned steps in the next picture frame display cycle.
According to above-mentioned configuration, when touch panel module reads touching signals in schedule time length, the current potential of data line and common voltage is earthing potential, therefore the touching signals of touch panel module can not be subject to the Electromagnetic Interference that the output signal of common voltage signal and data line produces when reversal, and then increases the accuracy of touching signals.
Please refer to Fig. 6, the process flow diagram of the touching signals read method that Fig. 6 is touch control display apparatus of the present invention.The flow process of the touching signals read method of touch control display apparatus of the present invention is as the following step:
Step 610: receive a drawing frame data;
Step 620: open one by one sweep trace;
Step 630: in schedule time length, the current potential (and current potential of common voltage) of controlling the data line of display module is earthing potential after described sweep trace is opened, and control touch panel module and read touching signals;
Step 640: open through schedule time length and show that by being write by data line data are in a plurality of picture elements that are coupled on described sweep trace in described sweep trace;
Step 650: whether opened all sweep traces, if so, to step 660, if not, to step 620; And
Step 660: receive next drawing frame data.
Compared to prior art, when the touching signals read method of touch control display apparatus of the present invention is controlled touch panel module and is read touching signals in schedule time length, the current potential of data line and common voltage is earthing potential, therefore the touching signals that touch panel module reads can not be subject to the Electromagnetic Interference that the output signal of common voltage signal and data line produces when reversal, and then increases the accuracy of touching signals.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a touching signals read method for touch control display apparatus, comprising:
One touch control display apparatus is provided, and this touch control display apparatus comprises a display module and a touch panel module;
Sequentially open the multi-strip scanning line of this display module; And
After each sweep trace of this multi-strip scanning line is opened, in a schedule time length, the current potential of controlling many data lines of this display module is earthing potential, and controls this touch panel module and read touching signals.
2. the method for claim 1, is characterized in that, each sweep trace that is also included in this multi-strip scanning line is controlled a common voltage of this display module in this schedule time length current potential after opening is earthing potential.
3. the method for claim 1, is characterized in that, each sweep trace that is also included in this multi-strip scanning line is opened through this schedule time length by being write demonstration data by these many data lines in a plurality of picture elements that are coupled on this sweep trace.
4. the method for claim 1, is characterized in that, controlling this touch panel module, to read touching signals be to read touching signals according to one of this schedule time length and this touch panel module synchronous this touch panel module of signal controlling.
5. method as claimed in claim 4, is characterized in that, this synchronizing signal is horizontal-drive signal.
6. method as claimed in claim 4, is characterized in that, this synchronizing signal is vertical synchronizing signal.
7. the method for claim 1, is characterized in that, the current potential of controlling many data lines of this display module is that earthing potential is that the current potential of controlling all of data lines of this display module is earthing potential.
8. the method for claim 1, is characterized in that, also comprises and sets this schedule time length.
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| CN201210311339.4A CN103631422B (en) | 2012-08-28 | 2012-08-28 | The touching signals read method of touch control display apparatus |
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| CN201210311339.4A CN103631422B (en) | 2012-08-28 | 2012-08-28 | The touching signals read method of touch control display apparatus |
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| CN103631422A true CN103631422A (en) | 2014-03-12 |
| CN103631422B CN103631422B (en) | 2016-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107424550A (en) * | 2017-02-09 | 2017-12-01 | 北京集创北方科技股份有限公司 | Display drive method and flat-panel screens |
| CN107479750A (en) * | 2017-08-08 | 2017-12-15 | 昆山龙腾光电有限公司 | A kind of touch control display apparatus and its control method |
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| CN101089687A (en) * | 2006-06-13 | 2007-12-19 | 三星电子株式会社 | Liquid crystal display device and driving method thereof |
| US20100020061A1 (en) * | 2006-10-25 | 2010-01-28 | Pioneer Corporation | Display device and method of driving the display device |
| CN102566814A (en) * | 2010-11-10 | 2012-07-11 | 乐金显示有限公司 | Electrophoresis display having touch screen and method for driving the touch screen |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089687A (en) * | 2006-06-13 | 2007-12-19 | 三星电子株式会社 | Liquid crystal display device and driving method thereof |
| US20100020061A1 (en) * | 2006-10-25 | 2010-01-28 | Pioneer Corporation | Display device and method of driving the display device |
| CN102566814A (en) * | 2010-11-10 | 2012-07-11 | 乐金显示有限公司 | Electrophoresis display having touch screen and method for driving the touch screen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107424550A (en) * | 2017-02-09 | 2017-12-01 | 北京集创北方科技股份有限公司 | Display drive method and flat-panel screens |
| CN107479750A (en) * | 2017-08-08 | 2017-12-15 | 昆山龙腾光电有限公司 | A kind of touch control display apparatus and its control method |
| CN107479750B (en) * | 2017-08-08 | 2020-09-01 | 昆山龙腾光电股份有限公司 | Touch display device and control method thereof |
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| CN103631422B (en) | 2016-11-02 |
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