CN103914166A - Touch panel and driving method thereof - Google Patents
Touch panel and driving method thereof Download PDFInfo
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- CN103914166A CN103914166A CN201310006547.8A CN201310006547A CN103914166A CN 103914166 A CN103914166 A CN 103914166A CN 201310006547 A CN201310006547 A CN 201310006547A CN 103914166 A CN103914166 A CN 103914166A
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Abstract
The invention discloses a touch panel and a driving method thereof. The touch panel comprises a substrate, a plurality of sensing electrodes arranged on the substrate and used for transmitting multiple driving signals and producing multiple sensing signals according to the driving signals, and a driver for driving the sensing electrodes. The driver energy is forbidden within a preset time period after one common voltage signal of a display panel is converted. The touch panel can forbid the driver energy according to the converting time of the common voltage signal so as to avoid mistake touch data. The touch panel can block electromagnetic waves of noise of the common voltage signal without an electromagnetic shielding film. Therefore, a structure and the complex degree of the touch panel can be simplified.
Description
Technical field
The present invention relates to a kind of contact panel and driving method thereof, espespecially one can avoid being subject to contact panel and the driving method thereof of common voltage noise effect.
Background technology
Please refer to Fig. 1, Fig. 1 is the waveform schematic diagram of common voltage signal and noise thereof.As shown in Figure 1, in order to drive the picture element of display panel, the common voltage signal Vcom of display panel can be in each display cycle transition once.But in the time that starting transition, common voltage signal Vcom (is for example elevated to high voltage level from low-voltage position standard, or drop to low-voltage position standard from high voltage level), common voltage signal Vcom can produce noise N, and the noise N of common voltage signal Vcom generation can disturb other signal with electromagnetic mode, for example, disturb the induced signal of contact panel.
The noise N producing during for fear of common voltage signal Vcom transition has influence on the induced signal of contact panel, and known contact panel can attach the electromagnetic wave of an electromagnetic shielding film with the noise N of obstruct common voltage signal Vcom.Can increase the structure of contact panel and the complexity of processing procedure but attach electromagnetic shielding film, relatively also increase the manufacturing cost of contact panel.
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 contact panel, it comprises a substrate; A plurality of induction electrodes, are arranged on described substrate, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals; And a driver, in order to drive described a plurality of induction electrodes.Wherein after the transition of one of display panel common voltage signal, in a schedule time length, described driver is disabled.
The present invention also provides a kind of touch control display apparatus, and it comprises a display panel, and a contact panel.Described display panel comprises a picture element matrix, in order to according to multiple sweep signals, multiple data-signal and a common voltage signal display frame; And one drive circuit, be used to provide described multiple sweep signal, described multiple data-signals and described common voltage signal to described picture element matrix.Described contact panel comprises a substrate; A plurality of induction electrodes, are arranged on described substrate, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals; And a driver, in order to drive described a plurality of induction electrodes.Wherein after the transition of described common voltage signal, in a schedule time length, described driver is disabled.
The present invention also provides a kind of driving method of contact panel, and it comprises provides a contact panel, and described contact panel comprises a plurality of induction electrodes, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals; Detect the transition of the common voltage of a display panel; Control described contact panel stops in a schedule time length producing touch-control data according to described multiple induced signals after the transition of described common voltage signal; And control described contact panel after described schedule time length, produce touch-control data according to described multiple induced signals after the transition of described common voltage signal.
Compared to prior art, contact panel of the present invention can be for example, according to the transition time forbidden energy driver of common voltage signal (forbidden energy delivery unit, receiving element and/or processing unit), to avoid producing the touch-control data of mistake.Contact panel of the present invention does not need to attach the electromagnetic wave of electromagnetic shielding film with the noise of obstruct common voltage signal.Therefore, the present invention can simplify the structure of contact panel and the complexity of processing procedure.
Brief description of the drawings
Fig. 1 is the waveform schematic diagram of common voltage signal and noise thereof.
Fig. 2 is the schematic diagram of touch control display apparatus of the present invention.
Fig. 3 is the structural representation of Fig. 2 contact panel.
Fig. 4 is the schematic diagram of contact panel activation of the present invention and forbidden energy inducing function.
Fig. 5 is the also schematic diagram of an embodiment of contact panel of the present invention.
Fig. 6 is the also schematic diagram of an embodiment of touch control display apparatus of the present invention.
Fig. 7 is the process flow diagram of the driving method of contact panel of the present invention.
Wherein, description of reference numerals is as follows:
100,200 touch control display apparatus
110,210 display panels
112 picture element matrixes
114,214 driving circuits
120,220 contact panels
122 substrates
124,224 drivers
125 delivery units
126 receiving elements
127 processing units
128 sensing units
700 process flow diagrams
710-740 step
A first direction
B second direction
D data-signal
S sweep signal
L1 the first induction electrode
L2 the second induction electrode
T schedule time length
N noise
Vcom common voltage signal
Embodiment
Please also refer to Fig. 2 and Fig. 3.Fig. 2 is the schematic diagram of touch control display apparatus of the present invention, and Fig. 3 is the structural representation of Fig. 2 contact panel.As shown in the figure, touch control display apparatus 100 of the present invention comprises display panel 110, one contact panels 120, and a processor 130.Display panel 110 comprises a picture element matrix 112, and one drive circuit 114.Driving circuit 114 is to be used to provide multiple sweep signal S, multiple data-signal D and a common voltage signal Vcom to picture element matrix 112.And picture element matrix 112 is in order to carry out display frame according to multiple sweep signal S, multiple data-signal D and common voltage signal Vcom.Contact panel 120 comprises a substrate 122, a plurality of first induction electrodes L1, a plurality of second induction electrodes L2, and a driver 124.A plurality of first induction electrodes L1 is arranged on substrate 122 along a first direction A, in order to transmit multiple driving signal Tx.A plurality of second induction electrodes L2 is arranged on substrate 122 along a second direction B who is different from first direction A, in order to produce multiple induced signal Rx according to multiple driving signal Tx.Driver 124 comprises delivery unit 125, one receiving elements 126, and a processing unit 127.Delivery unit 125 is to be electrically connected on a plurality of first induction electrodes L1, in order to export multiple driving signal Tx.Receiving element 126 is to be electrically connected on a plurality of second induction electrodes L2, the multiple induced signal Rx that produce in order to receive the second induction electrode L2.Processing unit 127 is in order to produce touch-control data according to multiple induced signal Tx.The operation of the touch-control Data Control touch control display apparatus 100 that processor 130 can produce according to driver 124, the cursor for example showing on mobile display panel 110.In embodiments of the present invention, the first induction electrode L1 is not defined for to transmit and drives signal TX, and the second induction electrode L2 does not also limit in order to produce multiple induced signal Rx according to multiple driving signal Tx, and the function of the first induction electrode L1 and the second induction electrode L2 is interchangeable.
Please refer to Fig. 4, and in the lump with reference to figure 2 and Fig. 3.Fig. 4 is the schematic diagram of contact panel activation of the present invention and forbidden energy inducing function.As shown in Figure 4, the noise N producing during for fear of the common voltage signal Vcom transition of display panel has influence on the induced signal Rx of contact panel, the driver 124 of contact panel 120 is to be electrically connected on the driving circuit 114 of display panel 110 to receive common voltage signal Vcom, the transition time that so driver 124 can be learnt common voltage signal Vcom, and after common voltage signal Vcom transition forbidden energy delivery unit 125, receiving element 126 and/or processing unit 127 in a schedule time length.
For instance, when common voltage signal, Vcom starts after transition, driver 124 can be in the schedule time length T forbidden energy delivery unit 125, make delivery unit 125 stop exporting multiple driving signal TX to the first induction electrode L1, and then stop producing touch-control data to processor 130; When common voltage signal, Vcom starts after transition, driver 124 can be in the schedule time length T forbidden energy receiving element 126, make receiving element 126 stop receiving multiple induced signal Rx that the second induction electrode L2 produces, and then stop producing touch-control data to processor 130; Or Vcom starts after transition when common voltage signal, driver 124 can be in the schedule time length T forbidden energy processing unit 127, make processing unit 127 stop producing touch-control data according to multiple induced signal Rx.So driver 124 can not provide inaccurate touch-control data to processor 130, and then causes processor 130 execution error operations.In addition, when after common voltage signal Vcom transition again after schedule time length T, driver 124 can activation delivery unit 125, receiving element 126 and/or processing unit 127, and produces touch-control data to processor 130 according to multiple induced signal Rx.
Above-mentioned schedule time length T can determine than (signal to noise ratio, SNR) according to the news of induced signal Rx are assorted.For instance, if the assorted ratio of the news of induced signal Rx is lower than causing touch-control error in data in the situation of a predetermined value, can to measure the news of induced signal Rx assorted than under the noise effect that is subject to common voltage signal Vcom and lower than the time span of predetermined value for driver 124, and further determine above-mentioned schedule time length T.So, driver 124 can guarantee to produce correct touch-control data.
Please refer to Fig. 5.Fig. 5 is the also schematic diagram of an embodiment of contact panel of the present invention.As shown in Figure 5, contact panel can also comprise that at least one sensing unit 128 is arranged on substrate 122.Sensing unit 128 is to be electrically connected on driver 124, and sensing unit 128 can utilize the mode of for example electromagnetic induction to respond to the transition of common voltage signal Vcom.The transition time that so driver 124 does not need the driving circuit 114 that is electrically connected on display panel 110 can learn common voltage signal Vcom.Sensing unit 128 can be any type of inductive component.
Please refer to Fig. 6.Fig. 6 is the also schematic diagram of an embodiment of touch control display apparatus of the present invention.As shown in Figure 6, the driver 224 of contact panel 220 is to be integrated in processor 230 with the driving circuit of display panel 210 214, so further reduced volume and minimizing cost of touch control display apparatus 200 of the present invention.
Please refer to Fig. 7.Fig. 7 is the process flow diagram 700 of the driving method of contact panel of the present invention.The flow process of the driving method of contact panel of the present invention is as the following step:
Step 710 a: contact panel is provided, described contact panel comprises the first induction electrode that a plurality of arrange along a first direction, in order to transmit multiple driving signals, and a plurality of second induction electrodes that arrange along a second direction that is different from described first direction, in order to produce multiple induced signals according to described multiple driving signals;
Step 720: the transition of the common voltage of detecting one display panel;
Step 730: control described contact panel and stop in a schedule time length producing touch-control data according to described multiple induced signals after the transition of described common voltage signal; And
Step 740: control described contact panel and produce touch-control data according to described multiple induced signals after described schedule time length after the transition of described common voltage signal.
Compared to prior art, contact panel of the present invention can be for example, according to the transition time forbidden energy driver of common voltage signal (forbidden energy delivery unit, receiving element and/or processing unit), to avoid producing wrong touch-control data.Contact panel of the present invention does not need to attach the electromagnetic wave of electromagnetic shielding film with the noise of obstruct common voltage signal.Therefore, the present invention can simplify the structure of contact panel and the complexity of processing procedure.
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 amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (16)
1. a contact panel, is characterized in that, comprising:
One substrate;
A plurality of induction electrodes, are arranged on described substrate, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals; And
One driver, in order to drive described a plurality of induction electrodes;
Wherein after the transition of one of display panel common voltage signal, in a schedule time length, described driver is disabled.
2. contact panel as claimed in claim 1, is characterized in that, described driver comprises:
One delivery unit, is electrically connected on described a plurality of induction electrodes, in order to export described multiple driving signal;
One receiving element, is electrically connected on described a plurality of induction electrodes, in order to receive described multiple induced signal; And
One processing unit, in order to produce touch-control data according to described multiple induced signals;
The described delivery unit of wherein said driver, described receiving element and/or described processing unit are in a schedule time length, to be disabled after the transition of described common voltage signal.
3. contact panel as claimed in claim 1, is characterized in that, described a plurality of induction electrodes comprise:
A plurality of first induction electrodes, are arranged on described substrate along a first direction, in order to transmit described multiple driving signal; And
A plurality of second induction electrodes, are arranged on described substrate along being different from one of described first direction second direction, in order to produce described multiple induced signals according to described multiple driving signals.
4. contact panel as claimed in claim 1, is characterized in that, described schedule time length is to determine than institute according to the news of described multiple induced signals are assorted.
5. contact panel as claimed in claim 1, is characterized in that, also comprise that at least one sensing unit is arranged on described substrate, described at least one sensing unit is to be electrically connected on described driver, is used for responding to the transition of described common voltage signal.
6. contact panel as claimed in claim 1, is characterized in that, described driver is to be electrically connected on the driving circuit of described display panel to receive described common voltage signal.
7. contact panel as claimed in claim 6, is characterized in that, described driver is to combine with the driving circuit of described display panel.
8. a touch control display apparatus, is characterized in that, comprising:
One display panel, comprising:
One picture element matrix, in order to according to multiple sweep signals, multiple data-signal and a common voltage signal display frame; And
One drive circuit, is used to provide described multiple sweep signal, described multiple data-signals and described common voltage signal to described picture element matrix; And
One contact panel, comprising:
One substrate;
A plurality of induction electrodes, are arranged on described substrate, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals; And
One driver, in order to drive described a plurality of induction electrodes;
Wherein after the transition of described common voltage signal, in a schedule time length, described driver is disabled.
9. touch control display apparatus as claimed in claim 8, is characterized in that, described driver comprises:
One delivery unit, is electrically connected on described a plurality of induction electrodes, in order to export described multiple driving signal;
One receiving element, is electrically connected on described a plurality of induction electrodes, in order to receive described multiple induced signal; And
One processing unit, in order to produce touch-control data according to described multiple induced signals;
The described delivery unit of wherein said driver, described receiving element and/or described processing unit are in a schedule time length, to be disabled after the transition of described common voltage signal.
10. touch control display apparatus as claimed in claim 8, is characterized in that, described a plurality of induction electrodes comprise:
A plurality of first induction electrodes, are arranged on described substrate along a first direction, in order to transmit described multiple driving signal; And
A plurality of second induction electrodes, are arranged on described substrate along being different from one of described first direction second direction, in order to produce described multiple induced signals according to described multiple driving signals.
11. touch control display apparatus as claimed in claim 8, is characterized in that, described schedule time length is to determine than institute according to the news of described multiple induced signals are assorted.
12. touch control display apparatus as claimed in claim 8, it is characterized in that, described contact panel also comprises that at least one sensing unit is arranged on described substrate, and described at least one sensing unit is to be electrically connected on described driver, is used for responding to the transition of described common voltage signal.
13. touch control display apparatus as claimed in claim 8, is characterized in that, described driver is to be electrically connected on the driving circuit of described display panel to receive described common voltage signal.
14. contact panels as claimed in claim 8, is characterized in that, described driver is to be to be integrated in described processor with the driving circuit of described display panel.
The driving method of 15. 1 kinds of contact panels, is characterized in that, comprising:
One contact panel is provided, and described contact panel comprises a plurality of induction electrodes, in order to transmit multiple driving signals, and in order to produce multiple induced signals according to described multiple driving signals;
Detect the transition of the common voltage of a display panel;
Control described contact panel stops in a schedule time length producing touch-control data according to described multiple induced signals after the transition of described common voltage signal; And
Control described contact panel and after described schedule time length, produce touch-control data according to described multiple induced signals after the transition of described common voltage signal.
16. driving methods as claimed in claim 15, is characterized in that, also comprising according to the news of described multiple induced signals assorted than determining described schedule time length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006547.8A CN103914166A (en) | 2013-01-08 | 2013-01-08 | Touch panel and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006547.8A CN103914166A (en) | 2013-01-08 | 2013-01-08 | Touch panel and driving method thereof |
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| CN103914166A true CN103914166A (en) | 2014-07-09 |
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| CN201310006547.8A Pending CN103914166A (en) | 2013-01-08 | 2013-01-08 | Touch panel and driving method thereof |
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| CN105094475A (en) * | 2014-05-14 | 2015-11-25 | 胜华科技股份有限公司 | Touch panel, touch display device and driving method of touch panel |
| WO2024113240A1 (en) * | 2022-11-30 | 2024-06-06 | 京东方科技集团股份有限公司 | Touch sampling control module and method, and display touch device |
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Application publication date: 20140709 |
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