CN108920017A - Touch screen and driving method and device thereof - Google Patents
Touch screen and driving method and device thereof Download PDFInfo
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- CN108920017A CN108920017A CN201810955917.5A CN201810955917A CN108920017A CN 108920017 A CN108920017 A CN 108920017A CN 201810955917 A CN201810955917 A CN 201810955917A CN 108920017 A CN108920017 A CN 108920017A
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- 238000012545 processing Methods 0.000 claims abstract description 6
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- 108091006146 Channels Proteins 0.000 description 208
- 238000010586 diagram Methods 0.000 description 12
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
The invention discloses a touch screen and a driving method and device thereof. Wherein, the touch-sensitive screen includes: a plurality of first channels and a plurality of second channels, the plurality of first channels intersecting the plurality of second channels, wherein the touch screen further comprises: the driving control circuit is provided with a plurality of driving pins, and the driving pins are connected with the first channels in a one-to-one correspondence manner; the driving pin is used for outputting channel driving signals for driving the first channel, and the voltage values of at least two channel driving signals are different; the receiving circuit is connected with the second channel and used for detecting the signal parameters of the second channel; and the processor is connected with the receiving circuit and is used for processing the signal parameters. The invention solves the technical problems of long scanning period and reduced performance of the driving scheme of the touch screen in the prior art.
Description
Technical field
The present invention relates to touch screen fields, in particular to a kind of touch screen and its driving method and device.
Background technique
It is general by the way of timesharing driving in existing touch screen drive scheme, the circuit structure of touch screen such as Fig. 1
Shown, the drive pulse signal of row of channels is as shown in Fig. 2, as depicted in figs. 1 and 2, synchronization drives a row of channels, simultaneously
The signal in multiple column channels is received, and the voltage of different moments generation driving signal is identical.Assuming that one row of channels of driving
Sweep time is 0.1ms, as shown in Fig. 2, the driving time for then completing a scan period is the sweep time of each row of channels
With the product namely driving time T=0.1ms*126=12.6ms of row of channels number.With the increase of row of channels quantity, scanning
Period can be elongated, and performance can be synchronized and is decreased obviously, moreover, the bandwidth with driving pulse is wider, is easy the work with display screen
Crosstalk occurs for frequency, and touch function performance is caused to decline.
For touch screen in the prior art drive scheme driving touch screen scan period it is long, and performance decline ask
Topic, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of touch screen and its driving methods and device, at least to solve to touch in the prior art
The technical issues of scan period for touching the drive scheme driving touch screen of screen is long, and performance declines.
According to an aspect of an embodiment of the present invention, a kind of touch screen is provided, including：Multiple first passages and multiple
Two channels, multiple first passages intersect with multiple second channels, which further includes：Drive control circuit, drive control electricity
Road is provided with multiple driving pins, and driving pin connects one to one with first passage；Drive pin logical to first for exporting
The channel driving signals that road is driven, the voltage value between at least two channel driving signals are different；Circuit is received, electricity is received
Road is connect with second channel, for detecting the signal parameter of second channel；Processor, processor and reception circuit connection, are used for
Signal parameter is handled.
Further, drive control circuit is provided at least two groups driving mould group, and driving mould group includes at least two drivings
Pin；The voltage value for being set to the channel driving signals of the driving pin output in the same driving mould group is identical, adjacent driven
The voltage value of the channel driving signals of driving pin output between mould group is different.
Further, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group
The driver' s timing of difference, the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Further, drive control circuit further includes：Controller, controller are provided with control terminal, and control terminal is for generating
Control signal；Bleeder circuit, bleeder circuit are provided with partial pressure input terminal and at least two partial pressure output ends, partial pressure input terminal and control
End connection processed, at least two partial pressure output ends connect one to one at least two groups driving mould group, and bleeder circuit is used for control
Signal is divided, and is exported the control signal after partial pressure to driving mould group by partial pressure output end.
Further, drive control circuit further includes：Booster circuit, booster circuit are provided with boosting input terminal and boost defeated
Outlet, boosting input terminal are connect with control terminal, and boosting output end is connect with partial pressure input terminal, and booster circuit is used for control signal
It boosts, and is exported the control signal after boosting to bleeder circuit by boosting output end；Bleeder circuit is used for boosting
Control signal afterwards is divided.
Further, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistance in touch screen
In the case where touch screen, signal parameter is voltage value.
According to another aspect of an embodiment of the present invention, a kind of driving method of touch screen is additionally provided, touch screen includes：It is more
A first passage and multiple second channels, multiple first passages intersect with multiple second channels, wherein the driving method of touch screen
Including：The channel driving signals driven to first passage are exported by the driving pin of drive control circuit, wherein at least
Voltage value between two channel driving signals is different；The signal parameter of second channel is detected by receiving circuit；Pass through processing
Device handles signal parameter.
Further, drive control circuit is provided at least two groups driving mould group, wherein is set to the same driving mould group
The voltage value of the channel driving signals of interior driving pin output is identical, and the driving pin output between adjacent driven mould group is led to
The voltage value of road driving signal is different.
Further, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group
The driver' s timing of difference, the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Further, this method further includes：Control signal is generated by the control terminal of controller；By bleeder circuit to control
Signal processed is divided, and is exported the control signal after partial pressure to driving mould group by the partial pressure output end of bleeder circuit.
Further, before being divided by bleeder circuit to control signal, this method further includes：Pass through boosting electricity
It boosts to control signal on road；The control signal after boosting is divided by bleeder circuit.
Further, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistance in touch screen
In the case where touch screen, signal parameter is voltage value.
According to another aspect of an embodiment of the present invention, a kind of driving device of touch screen is additionally provided, touch screen includes：It is more
A first passage and multiple second channels, multiple first passages intersect with multiple second channels, wherein the driving device of touch screen
Including：Output module, for exporting the channels drive driven to first passage by the driving pin of drive control circuit
Signal, wherein the voltage value between at least two channel driving signals is different；Detection module, for by receiving circuit detection
The signal parameter of second channel；Processing module, for being handled by processor signal parameter.
According to another aspect of an embodiment of the present invention, a kind of storage medium is additionally provided, storage medium includes the journey of storage
Sequence, wherein equipment where control storage medium executes the driving method of above-mentioned touch screen in program operation.
According to another aspect of an embodiment of the present invention, a kind of processor is additionally provided, processor is used to run program,
In, program executes the driving method of above-mentioned touch screen when running.
In embodiments of the present invention, the drive control circuit channels drive letter different by driving pin output voltage value
Number, to drive first passage, the signal parameter of second channel is detected by receiving circuit, so that processor can be to signal parameter
It is handled, realizes the purpose of detection touch operation.Compared with prior art, due between at least two channel driving signals
Voltage value is different, so that drive control circuit can be scanned at least two first passages in synchronization, so that entirely
The driving time in period shortens, that is, shortening the scan period, to reach the shortening scan period, promotes scanning speed,
Influence of the row of channels quantity increase to performance is reduced, avoids the interference to the working frequency of touch screen, improving performance reduces cost
Technical effect, and then the scan period for solving the drive scheme driving touch screen of touch screen in the prior art is long, and performance
The technical issues of decline.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of the circuit structure of touch screen according to prior art；
Fig. 2 is a kind of schematic diagram of the pulse signal of row of channels according to prior art；
Fig. 3 is a kind of schematic diagram of touch screen according to an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of the circuit structure of optional touch screen according to an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the pulse signal of optional row of channels according to an embodiment of the present invention；
Fig. 6 is the schematic diagram of another touch screen according to an embodiment of the present invention；
Fig. 7 is the schematic diagram of another touch screen according to an embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of optional touch screen according to an embodiment of the present invention；
Fig. 9 is a kind of flow chart of the driving method of touch screen according to an embodiment of the present invention；And
Figure 10 is a kind of schematic diagram of the driving device of touch screen according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
Embodiment 1
According to embodiments of the present invention, a kind of embodiment of touch screen is provided, touch screen includes：Multiple first passages and more
A second channel, multiple first passages intersect with multiple second channels.
Specifically, above-mentioned touch screen can be capacitance touch screen either electric resistance touch screen, but be not limited only to this, at this
In inventive embodiments, it is described in detail by taking capacitance touch screen as an example.As shown in Figure 1, touch screen can by multiple row of channels and
Multiple column channels are constituted, and row of channels and column channel are mutually perpendicular to intersect, and intersection forms capacitive node, by detecting capacitance section
The situation of change of parameter on point can determine user to the position where the touch operation of touch screen, due to the driving of touch screen
Row of channels is usually driven in scheme, and receives the signal in column channel, is that row is logical with multiple first passages in embodiments of the present invention
Road, multiple second channels are that column channel is described in detail.
Fig. 3 is a kind of schematic diagram of touch screen according to an embodiment of the present invention, as shown in figure 3, the touch screen further includes：It drives
Dynamic control circuit 32 receives circuit 34 and processor 36.
Wherein, drive control circuit, drive control circuit are provided with multiple driving pins, driving pin and first passage one
One is correspondingly connected with；Driving pin is for exporting the channel driving signals driven to first passage, at least two channels drives
Voltage value between signal is different.
Optionally, as shown in figure 3, drive control circuit 32 is provided at least two groups driving mould group 38, driving mould group includes
At least two driving pins；It is set to the voltage value phase of the channel driving signals of the driving pin output in the same driving mould group
Together, the voltage value of the channel driving signals of the driving pin output between adjacent driven mould group is different.
It specifically, can be by all row of channels on touch screen according to number in order to reduce scan periods of multiple row of channels
Amount is divided into multiple groups row of channels, and the quantity of every group of row of channels can be the same or different, and drive control circuit can be by more
Group driving mould group controls multiple groups row of channels simultaneously in synchronization, then drives the quantity of mould group and the number of packet one of row of channels
It causes, the quantity of above-mentioned driving mould group can be 2-5, can be carried out according to the quantity of touch screen data feedback channel in real process true
Calmly, in embodiments of the present invention, it is illustrated so that the quantity for driving mould group is 3 as an example.Further, in order to guarantee arrange channel on
The signal received simultaneously is different, therefore, to assure that the voltage of the channel driving signals of synchronization different driving module output is not
Together, the voltage of channel driving signals can be determined according to the voltage carrying capacity of row of channels, in embodiments of the present invention, with
Voltage range is described in detail for being 25-28V.
In a kind of optional scheme, it can be driven by drive control circuit in the different channel of synchronization output voltage
Dynamic signal, to realize the subregion between row of channels grouping, partial pressure control.
Optionally, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group not
Together, the driver' s timing of the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Specifically, the driving pin in the same drive module group can chronologically sequence successively drive in respective packets
The driver' s timing of the channel driving signals in each row of channels namely each boat channel is different, to realize in row of channels grouping
Time-sharing control.Since the voltage of the channel driving signals of different driving module output is different, the channel of different driving module output
The driver' s timing of driving signal can be identical, so as to shorten sweep time.
For example, as shown in Figure 4 and Figure 5, row of channels can be divided into 3 groupings, the channel of driving row of channels grouping 1 is driven
The voltage of dynamic signal is 25V, and the voltage of the channel driving signals of driving row of channels grouping 2 is 26V, driving row of channels grouping 3
The voltage of channel driving signals is 28V, and the sweep time that each row of channels is grouped interior row of channels is 0.1ms, same row of channels point
Multiple row of channels are successively driven in group, then sweep time and a row of the driving time of whole cycle for each row of channels
The product of most quantity of row of channels in channel packet.
Circuit 34 is received, circuit is received and is connect with second channel, for detecting the signal parameter of second channel.
Optionally, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistive touch in touch screen
In the case where touching screen, signal parameter is voltage value.
Specifically, the signal parameter in all column channels can be received simultaneously by receiving circuit, by detecting on each column channel
The variation of signal parameter, it can be determined that go out whether user carries out touch operation.
In a kind of optional scheme, for capacitance touch screen, when user carries out touch operation to touch screen, user's touching
The capacitance for touching position can change, and therefore, by detecting the situation of change of capacitance on each column channel, can determine use
Whether family carries out touch operation.
In another optional scheme, for electric resistance touch screen, when user carries out touch operation to touch screen, user
The voltage value of touch location can change, and therefore, by detecting the situation of change of voltage value on each column channel, can determine
Whether user carries out touch operation.
Processor 36, processor and reception circuit connection, for handling signal parameter.
Specifically, different in same grouping since the voltage of the channel driving signals of synchronization difference row of channels is different
The driver' s timings of the channel driving signals of row of channels is different, then processor receive receive signal parameter that circuit detects it
Afterwards, if multiple column Air conduct measurements to signal parameter convert, can be according to parameter value changed time, each
The sweep time of row of channels and design parameter value determine the corresponding row of channels of touch operation, true according to row of channels and column channel
Fixed coordinate, the specific location of available touch operation, to realize the touch function of touch screen.
It should be noted that the voltage due to channel driving signals changes, in order to ensure touch screen performance, need pair
Existing touch screen improves, and to ensure that the voltage of channel driving signals not will lead to row of channels damage, influences touch screen
Normal use.
In the above embodiment of the present invention, the drive control circuit channels drive different by driving pin output voltage value
Signal detects the signal parameter of second channel by receiving circuit, so that processor can join signal to drive first passage
Number is handled, and realizes the purpose of detection touch operation.Compared with prior art, due between at least two channel driving signals
Voltage value it is different, so that drive control circuit can be scanned at least two first passages in synchronization, so that whole
The driving time in a period shortens, that is, shortening the scan period, to reach the shortening scan period, promotes scanning speed
Degree reduces influence of the row of channels quantity increase to performance, avoids the interference to the working frequency of touch screen, and improving performance reduces
The technical effect of cost, and then the scan period for solving the drive scheme driving touch screen of touch screen in the prior art is long, and
The technical issues of performance declines.
Optionally, as shown in fig. 6, drive control circuit 32 includes：Controller 62 and bleeder circuit 64.
Wherein, controller 62, controller are provided with control terminal, and control terminal is for generating control signal.
Specifically, above-mentioned controller can be the MCU of touch screen (micro-control unit, full name be Microcontroller
Unit), for generating the control signal of driving mould group.
Bleeder circuit 64, bleeder circuit be provided with partial pressure input terminal and at least two partial pressure output ends, partial pressure input terminal with
Control terminal connection, at least two partial pressure output ends connect one to one at least two groups driving mould group, and bleeder circuit is used for control
Signal processed is divided, and is exported the control signal after partial pressure to driving mould group by partial pressure output end.
Specifically, above-mentioned bleeder circuit can be composed in series by multiple resistance, and the resistance value of each resistance is different, thus
The voltage value got on each resistance is also different.Since the control signal after partial pressure is to divide to obtain from original control signal
, in order to ensure the voltage of channel driving signals can satisfy driving demand, namely, it is ensured that the control signal after partial pressure, control
The voltage for the control signal that device generates needs to be greater than the summation of the control signal after partial pressure.
Optionally, as shown in fig. 7, drive control circuit 32 further includes：Booster circuit 72.
Wherein, booster circuit, booster circuit are provided with boosting input terminal and boosting output end, boost input terminal and control terminal
Connection, boosting output end are connect with partial pressure input terminal, and booster circuit is used to boost to control signal, and passes through boosting output
End exports the control signal after boosting to bleeder circuit；Bleeder circuit is for dividing the control signal after boosting.
Specifically, since the voltage value of the MCU output of touch screen is limited, in the case where driving a fairly large number of situation of mould group, nothing
Method meets partial pressure demand, then can to MCU export voltage value boost, by the boost in voltage for controlling signal to meet partial pressure
Demand, that is, the voltage of the control signal after boosting is greater than the summation of the control signal after partial pressure.Then pass through bleeder circuit pair
Control signal after boosting is divided, to obtain the control signal for driving different driving mould group.
It should be noted that in the above-described embodiments, controller, booster circuit, bleeder circuit and driving mould group are incorporated into
In one dedicated chip, but it is not limited only to this, controller, booster circuit, bleeder circuit and driving mould group can encapsulate respectively
At individual chip, and the use that links together.
Fig. 8 is a kind of schematic diagram of optional touch screen according to an embodiment of the present invention, is with touch screen below with reference to Fig. 8
Capacitance touch screen, row of channels are described in detail a kind of preferred embodiment of the present invention for being divided into 3 groups.As shown in figure 8,
Entirely touch screen may include：MCU, booster circuit, partial pressure unit, three driving circuits (TX), circuit (RX) and USB are received,
UART, wherein MCU is connect by USB, UART with booster circuit.MCU can be exported driving signal to liter by USB, UART
Volt circuit is boosted to driving signal by booster circuit, is further divided by partial pressure unit, and three drivings are obtained
Signal, voltage are respectively VD1, VD2 and VD3, and three driving signals are exported respectively to three driving circuits (TX), are driven by three
Circuit (TX) successively drives the boat channel in each row of channels grouping, and detects all column channels simultaneously by receiving circuit (RX)
Capacitance, MCU is obtained in real time receives circuit (RX) capacitance for detecting, and determines whether user touches according to capacitance
Operation is touched, when determining that user carries out touch operation, further determines that the touch location of user.
Through the above scheme, in the base of identical driving IC (integrated circuit, full name are Integrated Circuit) scheme
On plinth, it can be driven in such a way that partial pressure+subregion+timesharing combines, which has the following advantages that：Shorten scanning
Period promotes scanning speed；It is significant to put into inexpensive performance boost, cost performance height；Caused by touch screen row of channels quantity increase
Performance influences minimum；Narrow bandwidth is easy to avoid the working frequency interference of touch screen driving.
Embodiment 2
According to embodiments of the present invention, a kind of embodiment of the driving method of touch screen is provided, it should be noted that attached
The step of process of figure illustrates can execute in a computer system such as a set of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, it can be to be different from shown by sequence execution herein
Or the step of description.
Optionally, touch screen includes：Multiple first passages and multiple second channels, multiple first passages are logical with multiple second
Road intersects.
Specifically, above-mentioned touch screen can be capacitance touch screen either electric resistance touch screen, but be not limited only to this, at this
In inventive embodiments, it is described in detail by taking capacitance touch screen as an example.As shown in Figure 1, touch screen can by multiple row of channels and
Multiple column channels are constituted, and row of channels and column channel are mutually perpendicular to intersect, and intersection forms capacitive node, by detecting capacitance section
The situation of change of parameter on point can determine user to the position where the touch operation of touch screen, due to the driving of touch screen
Row of channels is usually driven in scheme, and receives the signal in column channel, is that row is logical with multiple first passages in embodiments of the present invention
Road, multiple second channels are that column channel is described in detail.
Fig. 9 is a kind of flow chart of the driving method of touch screen according to an embodiment of the present invention, as shown in figure 9, this method
Include the following steps：
Step S902 is believed by the channels drive that the driving pin output of drive control circuit drives first passage
Number, wherein the voltage value between at least two channel driving signals is different.
Optionally, drive control circuit is provided at least two groups driving mould group, wherein is set in the same driving mould group
Driving pin output channel driving signals voltage value it is identical, between adjacent driven mould group driving pin output channel
The voltage value of driving signal is different.
It specifically, can be by all row of channels on touch screen according to number in order to reduce scan periods of multiple row of channels
Amount is divided into multiple groups row of channels, and the quantity of every group of row of channels can be the same or different, and drive control circuit can be by more
Group driving mould group controls multiple groups row of channels simultaneously in synchronization, then drives the quantity of mould group and the number of packet one of row of channels
It causes, the quantity of above-mentioned driving mould group can be 2-5, can be carried out according to the quantity of touch screen data feedback channel in real process true
Calmly, in embodiments of the present invention, it is illustrated so that the quantity for driving mould group is 3 as an example.Further, in order to guarantee arrange channel on
The signal received simultaneously is different, therefore, to assure that the voltage of the channel driving signals of synchronization different driving module output is not
Together, the voltage of channel driving signals can be determined according to the voltage carrying capacity of row of channels, in embodiments of the present invention, with
Voltage range is described in detail for being 25-28V.
Optionally, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group not
Together, the driver' s timing of the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Specifically, the driving pin in the same drive module group can chronologically sequence successively drive in respective packets
The driver' s timing of the channel driving signals in each row of channels namely each boat channel is different, to realize in row of channels grouping
Time-sharing control.Since the voltage of the channel driving signals of different driving module output is different, the channel of different driving module output
The driver' s timing of driving signal can be identical, so as to shorten sweep time.
Step S904 detects the signal parameter of second channel by receiving circuit.
Optionally, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistive touch in touch screen
In the case where touching screen, signal parameter is voltage value.
Specifically, the signal parameter that all column channels can be received simultaneously, by detecting signal parameter on each column channel
Variation, it can be determined that go out user whether carry out touch operation.
Step S906 is handled signal parameter by processor.
Specifically, different in same grouping since the voltage of the channel driving signals of synchronization difference row of channels is different
The driver' s timings of the channel driving signals of row of channels is different, then processor receive receive signal parameter that circuit detects it
Afterwards, if multiple column Air conduct measurements to signal parameter convert, can be according to parameter value changed time, each
The sweep time of row of channels and design parameter value determine the corresponding row of channels of touch operation, true according to row of channels and column channel
Fixed coordinate, the specific location of available touch operation, to realize the touch function of touch screen.
In the above embodiment of the present invention, driven by the different channel of the driving pin output voltage value of drive control circuit
Dynamic signal detects the signal parameter of second channel by receiving circuit, so that processor can be to signal to drive first passage
Parameter is handled, and realizes the purpose of detection touch operation.Compared with prior art, due at least two channel driving signals it
Between voltage value it is different, so that drive control circuit can be scanned at least two first passages in synchronization.With it is existing
There is technology to compare, since the first different driving signal of multiple voltages can be generated in synchronization, and can be in same a period of time
Quarter drives different first passages, so that the driving time of whole cycle shortens, that is, the scan period is shortened, from
And reached the shortening scan period, scanning speed is promoted, influence of the row of channels quantity increase to performance is reduced, is avoided to touch screen
Working frequency interference, improving performance reduces the technical effect of cost, and then solves the driving of touch screen in the prior art
The technical issues of scheme drives the scan period of touch screen long, and performance declines.
Optionally, this method further includes：
Step S908 generates control signal by the control terminal of controller.
Specifically, above-mentioned controller can be the MCU of touch screen (micro-control unit, full name be Microcontroller
Unit), for generating the control signal of driving mould group.
Step S910 divides control signal by bleeder circuit, and will by the partial pressure output end of bleeder circuit
Control signal after partial pressure is exported to driving mould group.
Specifically, above-mentioned bleeder circuit can be composed in series by multiple resistance, and the resistance value of each resistance is different, thus
The voltage value got on each resistance is also different.Since the control signal after partial pressure is to divide to obtain from original control signal
, in order to ensure the voltage of channel driving signals can satisfy driving demand, namely, it is ensured that the control signal after partial pressure, control
The voltage for the control signal that device generates needs to be greater than the summation of the control signal after partial pressure.
Optionally, in step S910, before being divided by bleeder circuit to control signal, this method further includes：
Step S912 boosts to control signal by booster circuit.
Step S914 divides the control signal after boosting by bleeder circuit.
Specifically, since the voltage value of the MCU output of touch screen is limited, in the case where driving a fairly large number of situation of mould group, nothing
Method meets partial pressure demand, then can to MCU export voltage value boost, by the boost in voltage for controlling signal to meet partial pressure
Demand, that is, the voltage of the control signal after boosting is greater than the summation of the control signal after partial pressure.Then pass through bleeder circuit pair
Control signal after boosting is divided, to obtain the control signal for driving different driving mould group.
It should be noted that the preferred embodiment of the present embodiment may refer to the associated description in embodiment 1, herein not
It repeats again.
Embodiment 3
According to embodiments of the present invention, a kind of embodiment of the driving device of touch screen is provided, touch screen includes：Multiple
One channel and multiple second channels, multiple first passages intersect with multiple second channels.
Specifically, above-mentioned touch screen can be capacitance touch screen either electric resistance touch screen, but be not limited only to this, at this
In inventive embodiments, it is described in detail by taking capacitance touch screen as an example.As shown in Figure 1, touch screen can by multiple row of channels and
Multiple column channels are constituted, and row of channels and column channel are mutually perpendicular to intersect, and intersection forms capacitive node, by detecting capacitance section
The situation of change of parameter on point can determine user to the position where the touch operation of touch screen, due to the driving of touch screen
Row of channels is usually driven in scheme, and receives the signal in column channel, is that row is logical with multiple first passages in embodiments of the present invention
Road, multiple second channels are that column channel is described in detail.
Figure 10 is a kind of schematic diagram of the driving device of touch screen according to an embodiment of the present invention, as shown in Figure 10, the dress
Set including：
Output module 102 drives first passage for the driving pin output by drive control circuit logical
Road driving signal, wherein the voltage value between at least two channel driving signals is different.
Optionally, drive control circuit is provided at least two groups driving mould group, wherein is set in the same driving mould group
Driving pin output channel driving signals voltage value it is identical, between adjacent driven mould group driving pin output channel
The voltage value of driving signal is different.
It specifically, can be by all row of channels on touch screen according to number in order to reduce scan periods of multiple row of channels
Amount is divided into multiple groups row of channels, and the quantity of every group of row of channels can be the same or different, and drive control circuit can be by more
Group driving mould group controls multiple groups row of channels simultaneously in synchronization, then drives the quantity of mould group and the number of packet one of row of channels
It causes, the quantity of above-mentioned driving mould group can be 2-5, can be carried out according to the quantity of touch screen data feedback channel in real process true
Calmly, in embodiments of the present invention, it is illustrated so that the quantity for driving mould group is 3 as an example.Further, in order to guarantee arrange channel on
The signal received simultaneously is different, therefore, to assure that the voltage of the channel driving signals of synchronization different driving module output is not
Together, the voltage of channel driving signals can be determined according to the voltage carrying capacity of row of channels, in embodiments of the present invention, with
Voltage range is described in detail for being 25-28V.
Optionally, it is set to the driver' s timing of the channel driving signals of the driving pin output in the same driving mould group not
Together, the driver' s timing of the channel driving signals of the driving pin output between adjacent driven mould group is identical.
Specifically, the driving pin in the same drive module group can chronologically sequence successively drive in respective packets
The driver' s timing of the channel driving signals in each row of channels namely each boat channel is different, to realize in row of channels grouping
Time-sharing control.Since the voltage of the channel driving signals of different driving module output is different, the channel of different driving module output
The driver' s timing of driving signal can be identical, so as to shorten sweep time.
Detection module 104, for detecting the signal parameter of second channel by receiving circuit.
Optionally, in the case where touch screen is capacitance touch screen, signal parameter is capacitance；It is resistive touch in touch screen
In the case where touching screen, signal parameter is voltage value.
Specifically, the signal parameter that all column channels can be received simultaneously, by detecting signal parameter on each column channel
Variation, it can be determined that go out user whether carry out touch operation.
Processing module 106, for being handled by processor signal parameter.
Specifically, different in same grouping since the voltage of the channel driving signals of synchronization difference row of channels is different
The driver' s timings of the channel driving signals of row of channels is different, then processor receive receive signal parameter that circuit detects it
Afterwards, if multiple column Air conduct measurements to signal parameter convert, can be according to parameter value changed time, each
The sweep time of row of channels and design parameter value determine the corresponding row of channels of touch operation, true according to row of channels and column channel
Fixed coordinate, the specific location of available touch operation, to realize the touch function of touch screen.
In the above embodiment of the present invention, driven by the different channel of the driving pin output voltage value of drive control circuit
Dynamic signal detects the signal parameter of second channel by receiving circuit, so that processor can be to signal to drive first passage
Parameter is handled, and realizes the purpose of detection touch operation.Compared with prior art, due at least two channel driving signals it
Between voltage value it is different, so that drive control circuit can be scanned at least two first passages in synchronization.With it is existing
There is technology to compare, since the first different driving signal of multiple voltages can be generated in synchronization, and can be in same a period of time
Quarter drives different first passages, so that the driving time of whole cycle shortens, that is, the scan period is shortened, from
And reached the shortening scan period, scanning speed is promoted, influence of the row of channels quantity increase to performance is reduced, is avoided to touch screen
Working frequency interference, improving performance reduces the technical effect of cost, and then solves the driving of touch screen in the prior art
The technical issues of scheme drives the scan period of touch screen long, and performance declines.
It should be noted that the preferred embodiment of the present embodiment may refer to the associated description in embodiment 1, herein not
It repeats again.
Embodiment 4
According to embodiments of the present invention, a kind of embodiment of storage medium is provided, storage medium includes the program of storage,
In, in program operation, equipment where control storage medium executes the driving method of the touch screen in above-described embodiment 2.
Embodiment 5
According to embodiments of the present invention, a kind of embodiment of processor is provided, processor is for running program, wherein journey
The driving method of the touch screen in above-described embodiment 2 is executed when sort run.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (15)
1. a kind of touch screen, including：Multiple first passages and multiple second channels, the multiple first passage and the multiple the
Two channels intersect, which is characterized in that the touch screen further includes：
Drive control circuit, the drive control circuit are provided with multiple driving pins, and the driving pin is logical with described first
Road connects one to one；The driving pin is for exporting the channel driving signals driven to the first passage, at least
Voltage value between two channel driving signals is different；
Circuit is received, the reception circuit is connect with the second channel, for detecting the signal parameter of the second channel；
Processor, the processor and the reception circuit connection, for handling the signal parameter.
2. touch screen according to claim 1, which is characterized in that the drive control circuit is provided at least two groups driving
Mould group, the driving mould group include at least two driving pins；It is set to the driving pin output in the same driving mould group
The voltage value of channel driving signals is identical, the voltage value of the channel driving signals of the driving pin output between adjacent driven mould group
It is different.
3. touch screen according to claim 2, which is characterized in that the driving pin being set in the same driving mould group is defeated
The driver' s timing of channel driving signals out is different, the channel driving signals of the driving pin output between adjacent driven mould group
Driver' s timing is identical.
4. touch screen according to claim 3, which is characterized in that the drive control circuit further includes：
Controller, the controller are provided with control terminal, and the control terminal is for generating control signal；
Bleeder circuit, the bleeder circuit are provided with partial pressure input terminal and at least two partial pressure output ends, the partial pressure input terminal
It is connect with the control terminal, at least two partial pressure output end connects one to one at least two groups driving mould group, institute
Bleeder circuit is stated for dividing to the control signal, and by the partial pressure output end that the control signal after partial pressure is defeated
Out to the driving mould group.
5. touch screen according to claim 4, which is characterized in that the drive control circuit further includes：
Booster circuit, the booster circuit are provided with boosting input terminal and boosting output end, the boosting input terminal and the control
End processed connection, the boosting output end are connect with the partial pressure input terminal, the booster circuit for the control signal into
Row boosting, and exported the control signal after boosting to the bleeder circuit by the boosting output end；The bleeder circuit
For being divided to the control signal after the boosting.
6. touch screen according to claim 1, which is characterized in that in the case where the touch screen is capacitance touch screen,
The signal parameter is capacitance；In the case where the touch screen is electric resistance touch screen, the signal parameter is voltage value.
7. a kind of driving method of touch screen, the touch screen include：Multiple first passages and multiple second channels, it is the multiple
First passage intersects with the multiple second channel, which is characterized in that the driving method of the touch screen includes：
The channel driving signals driven to the first passage are exported by the driving pin of drive control circuit, wherein
Voltage value between at least two channel driving signals is different；
The signal parameter of the second channel is detected by receiving circuit；
The signal parameter is handled by processor.
8. the method according to the description of claim 7 is characterized in that the drive control circuit is provided at least two groups driving mould
Group, wherein the voltage value for being set to the channel driving signals of the driving pin output in the same driving mould group is identical, adjacent drive
The voltage value of the channel driving signals of driving pin output between dynamic model group is different.
9. according to the method described in claim 8, it is characterized in that, being set to the driving pin output in the same driving mould group
Channel driving signals driver' s timing it is different, the drive of the channel driving signals of the driving pin output between adjacent driven mould group
Dynamic timing is identical.
10. according to the method described in claim 9, it is characterized in that, the method also includes：
Control signal is generated by the control terminal of controller；
The control signal is divided by bleeder circuit, and will be after partial pressure by the partial pressure output end of the bleeder circuit
Control signal export to the driving mould group.
11. according to the method described in claim 10, it is characterized in that, being divided by bleeder circuit the control signal
Before pressure, the method also includes：
It is boosted by booster circuit to the control signal；
The control signal after boosting is divided by the bleeder circuit.
12. the method according to the description of claim 7 is characterized in that the touch screen be capacitance touch screen in the case where, institute
Stating signal parameter is capacitance；In the case where the touch screen is electric resistance touch screen, the signal parameter is voltage value.
13. a kind of driving device of touch screen, which is characterized in that the touch screen includes：Multiple first passages and multiple second
Channel, the multiple first passage intersect with the multiple second channel, wherein the driving device of the touch screen includes：
Output module, the channel driven for the driving pin output by drive control circuit to the first passage are driven
Dynamic signal, wherein the voltage value between at least two channel driving signals is different；
Detection module, for detecting the signal parameter of the second channel by receiving circuit；
Processing module, for being handled by processor the signal parameter.
14. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program
When control the storage medium where equipment perform claim require any one of 7 to 12 described in touch screen driving method.
15. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run
Benefit require any one of 7 to 12 described in touch screen driving method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810955917.5A CN108920017B (en) | 2018-08-21 | 2018-08-21 | Touch screen and driving method and device thereof |
| PCT/CN2018/118229 WO2020037867A1 (en) | 2018-08-21 | 2018-11-29 | Touch screen and driving method and apparatus therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810955917.5A CN108920017B (en) | 2018-08-21 | 2018-08-21 | Touch screen and driving method and device thereof |
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Cited By (1)
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| CN109917963A (en) * | 2019-03-05 | 2019-06-21 | 广州视源电子科技股份有限公司 | Touch screen, driving method thereof, storage medium and processor |
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| CN108920017B (en) | 2024-08-06 |
| WO2020037867A1 (en) | 2020-02-27 |
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