CN105739757A - Scan method and system for touch screen, touch screen and touch screen device - Google Patents
Scan method and system for touch screen, touch screen and touch screen device Download PDFInfo
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- CN105739757A CN105739757A CN201610037278.5A CN201610037278A CN105739757A CN 105739757 A CN105739757 A CN 105739757A CN 201610037278 A CN201610037278 A CN 201610037278A CN 105739757 A CN105739757 A CN 105739757A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3262—Power saving in digitizer or tablet
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
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- Position Input By Displaying (AREA)
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Abstract
The invention discloses a scan method for a touch screen. The method comprises the steps of short-circuiting each touch electrode of the touch screen in response to a standby instruction received by the touch screen, and scanning the touch electrodes with a first scan signal; if a touch signal is detected, cutting off the electrical connection between the touch electrodes, and scanning the touch electrodes with a second scan signal, wherein the scan frequency of the second scan signal is greater than that of the first scan signal. The scan method for the touch screen reduces the power consumption of the touch screen.
Description
Technical field
The application relates to luminescence display field, particularly relates to scan method and system, touch screen and the touch panel device of a kind of touch screen.
Background technology
Currently, touch screen technology replaces the mainstream technology becoming mobile terminal etc. by key technology gradually.When touch screen technology is the touch screen being arranged on display front end according to the contact such as finger, pen, the position (with coordinate form) touched is detected and delivers to CPU, so that it is determined that a kind of technology of the information being transfused to.At present, the range of application of touch screen very wide, main product includes the mobile terminals such as touch-control class mobile phone, notebook computer and the man-machine display interface etc. of industrial automation industry.
Existing touch screen when standby for positioning touch location exactly, partial touch electrode is only made to enter resting state, and remainder touch electrode need nonetheless remain for having been used up higher rate of scanning and is scanned, in order to whether detection touch screen exists touch signal.This method causes bigger power consumption, and the development trend of this super long standby time with display device runs in the opposite direction.
Summary of the invention
The purpose of the application is in that to propose the scan method of a kind of touch screen and system, touch screen and touch panel device, solves the technical problem that background section above is mentioned.
First aspect, the embodiment of the present application provides the scan method of a kind of touch screen, and described method includes: receive standby command in response to touch screen, by each touch electrode short circuit of described touch screen, and scans touch electrode described in signal scanning with first；If touch signal being detected, then disconnecting the electrical connection between each described touch electrode, and scan each described touch electrode of signal scanning with second, wherein, the rate of scanning of described second scanning signal is more than the rate of scanning of described scan signal.
In certain embodiments, described method also includes: detect whether each described touch electrode receives the touch signal mated with default touch track；If the touch signal mated with described default touch track being detected, then scan touch screen described in signal scanning with the 3rd；Wherein, the rate of scanning of described 3rd scanning signal is more than the rate of scanning of the rate of scanning of described scan signal and described second scanning signal.
In certain embodiments, described method also includes: if being not detected by the touch signal mated with described default touch track, then scan touch screen described in signal scanning with described first.
In certain embodiments, described scan signal opposite polarity within the adjacent scan period, described second scanning signal opposite polarity within the adjacent scan period.
Second aspect, the embodiment of the present application provides a kind of touch screen, and including multiple touch electrodes output line corresponding with each touch electrode, control chip and multiple switch, wherein, described switch includes the first end, the second end and controls end；Each described touch electrode is electrically connected with described control chip by described output line；First end of each described switch and the electrical connection of corresponding touch electrode；Second end of each described switch is connected with each other, and is electrically connected with described control chip by any one described output line；Described control chip exports control signal to control being turned on or off of each described switch to the end that controls of each described switch.
In certain embodiments, described switch is metal-oxide-semiconductor, and described control end is the grid of described metal-oxide-semiconductor, and described first end is the first pole of described metal-oxide-semiconductor, and described second end is the second pole of described metal-oxide-semiconductor；First pole of each described metal-oxide-semiconductor and the electrical connection of corresponding touch electrode；Second pole of each described metal-oxide-semiconductor is connected with each other, and is electrically connected with described control chip by any one described output line；The grid of each described metal-oxide-semiconductor electrically connects with described control chip.
In certain embodiments, described control chip controls the conducting of each described metal-oxide-semiconductor for exporting control signal to the grid of each described metal-oxide-semiconductor so that each described touch electrode rear is electrically connected with described any one bars output lead by the second of each described MOS the extremely short connecing；And exporting control signal control each described metal-oxide-semiconductor shutoff to the grid of each described metal-oxide-semiconductor so that each described touch electrode is electrically connected with described control chip by described output line.
The third aspect, the embodiment of the present application additionally provides the scanning system of a kind of touch screen, and described system includes: the first scan module, for receiving standby command in response to touch screen, by each touch electrode short circuit of described touch screen, and scan touch electrode described in signal scanning with first；Second scan module, if for touch signal being detected, then disconnect the electrical connection between each described touch electrode, and scan each described touch electrode of signal scanning with second, wherein, the rate of scanning of described second scanning signal is more than the rate of scanning of described scan signal.
In certain embodiments, described system also includes: detection module, for detecting whether each described touch electrode receives the touch signal mated with default touch track；If the touch signal mated with described default touch track being detected, then scan touch screen described in signal scanning with the 3rd；Wherein, the frequency of described 3rd scanning signal is more than the rate of scanning of the rate of scanning of described scan signal and described second scanning signal.
In certain embodiments, if being not detected by the touch signal mated with described default touch track, then scan touch screen described in signal scanning with described first.
In certain embodiments, described scan signal opposite polarity within the adjacent scan period, described second scanning signal opposite polarity within the adjacent scan period.
Fourth aspect, the embodiment of the present application additionally provides a kind of touch panel device, including above-mentioned touch screen.
The scan method of the touch screen that the application provides and system, touch screen and touch panel device, touch screen is when receiving standby signal, each touch electrode of touch screen is carried out short circuit, and with the touch electrode after the first scanning signal scanning short circuit, if touch screen detects touch signal afterwards, then the touch electrode of short circuit is disconnected, and with rate of scanning more than the second of scan signal the scanning each touch electrode of signal scanning, achieve the conversion that the touch screen under holding state is scanned signal frequency, such that it is able to reduce touch screen power consumption in the standby state.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other features, purpose and advantage will become more apparent upon:
Fig. 1 illustrates the indicative flowchart of an embodiment of the scan method of the touch screen according to the application；
Fig. 2 illustrates the indicative flowchart of another embodiment of the scan method of the touch screen according to the application；
Fig. 3 illustrates the schematic diagram of the default touch track of the touch screen according to the application；
Fig. 4 illustrates the structural representation of an embodiment of the touch screen according to the application；
Fig. 5 illustrates the structural representation of the touch screen of the touch electrode short circuit according to the application；
Fig. 6 illustrates the scan signal according to the application and the oscillogram of the second scanning signal；
Fig. 7 illustrates the structural representation of an embodiment of the scanning system of the touch screen according to the application.
Detailed description of the invention
Below in conjunction with drawings and Examples, the application is described in further detail.It is understood that specific embodiment described herein is used only for explaining related invention, but not the restriction to this invention.It also should be noted that, for the ease of describing, accompanying drawing illustrate only and invent relevant part.
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 illustrates a kind of schematic flow Figure 100 of the scan method of the touch screen according to the application.The scan method of described touch screen, comprises the steps:
Step 101, receives standby command in response to touch screen, by each touch electrode short circuit of touch screen, and scans signal scanning touch electrode with first.
In the present embodiment, when above-mentioned touch screen receives the standby command entering standby mode, touch electrode each in touch screen is carried out short circuit, can realize each touch electrode is carried out the switching of short circuit and disconnection by modes such as switches here.Further, with the touch electrode after the first scanning above-mentioned short circuit of signal scanning.
It should be noted that, when after touch electrode short circuit each in above-mentioned touch screen, a touch electrode can be considered as, and in the output line that former each touch electrode is corresponding, choose any one output line as the touch electrode after short circuit, touch electrode after short circuit is electrically connected with control chip.Here, scan signal is generally only used for judging whether to have on above-mentioned touch screen touch signal, rather than judge the touch track of touch signal, therefore, it is extremely low that the rate of scanning of this scan signal can be arranged, this power consumption being possible not only to reduce touch screen, also further reduces the burden of control chip.
Step 102, if touch signal being detected, then disconnects the electrical connection between each touch electrode, and scans each touch electrode of signal scanning with second.
In the present embodiment, when scanning in the above-mentioned touch screen of signal scanning the touch electrode after short circuit with first, if touch signal being detected, then show that touch screen have received touch operation.At this time, it may be necessary to judge touch location further.Therefore, in this step, by the electrical connection between each touch electrode of above-mentioned short circuit is disconnected so that each touch electrode can independently received touch signal.Additionally, due to the rate of scanning of the second scanning signal is more than the rate of scanning of above-mentioned scan signal, by scanning each touch electrode after signal replaces the first scanning above-mentioned disconnection of signal scanning with second, it is possible to promptly determine touch location.
In some optional implementations of the present embodiment, when scanning in the above-mentioned touch screen of signal scanning the touch electrode after short circuit with first, if being not detected by touch signal, then continue to scan the touch electrode after the above-mentioned short circuit of signal scanning with first.
The scan method of the touch screen that above-described embodiment of the application provides, touch screen is when receiving standby signal, each touch electrode of touch screen is carried out short circuit, and with the touch electrode after the first scanning signal scanning short circuit, if touch screen detects touch signal afterwards, then the touch electrode of short circuit is disconnected, and with rate of scanning more than the second of scan signal the scanning each touch electrode of signal scanning, achieve the conversion that the touch screen under holding state is scanned signal frequency, thus reducing touch screen power consumption in the standby state.
With continued reference to Fig. 2, it illustrates schematic flow Figure 200 of another embodiment of the scan method of touch screen.Flow process Figure 200 of the scan method of this touch screen, comprises the steps:
Step 201, receives standby command in response to touch screen, by each touch electrode short circuit of touch screen, and scans signal scanning touch electrode with first.
In the present embodiment, when above-mentioned touch screen receives the standby command entering standby mode, touch electrode each in touch screen is carried out short circuit, can realize each touch electrode is carried out the switching of short circuit and disconnection by modes such as switches here.Further, with the touch electrode after the first scanning above-mentioned short circuit of signal scanning.
Step 202, if touch signal being detected, then disconnects the electrical connection between each touch electrode, and scans each touch electrode of signal scanning with second.
In the present embodiment, when scanning in the above-mentioned touch screen of signal scanning the touch electrode after short circuit with first, if touch signal being detected, then the electrical connection between each touch electrode of above-mentioned short circuit is disconnected.Further, each touch electrode after signal replaces the first scanning above-mentioned disconnection of signal scanning is scanned with second.Wherein, the rate of scanning of the second scanning signal is more than the rate of scanning of above-mentioned scan signal.
In some optional implementations of the present embodiment, when scanning in the above-mentioned touch screen of signal scanning the touch electrode after short circuit with first, if being not detected by touch signal, then continue to scan the touch electrode after the above-mentioned short circuit of signal scanning with first.
Step 203, detects whether each touch electrode receives the touch signal mated with default touch track.
In the present embodiment, it is possible to pre-set touch track, based on the matching result of touch signal Yu touch track, above-mentioned touch screen is changed into duty from holding state.When scanning signal scanning touch screen with second, detect whether each touch electrode receives the touch signal matched with described default touch track, if the touch signal mated with above-mentioned default touch track being detected, then forward step 204 to, signal scanning touch screen is scanned with the 3rd, if being not detected by the touch signal mated with above-mentioned default touch track, then forwarding step 205 to, scanning signal scanning touch screen with first.
In some optional implementations of the present embodiment, when scanning signal scanning touch screen with second, it is that user wants from holding state, it is switched to duty in order to prevent display screen from maloperation being thought into, may determine that within the default time period, whether there is the touch signal meeting default touch track, if detecting there is the touch signal meeting default touch track within the default time period, then forward step 204 to, signal scanning touch screen is scanned with the 3rd, if failing to detect the touch signal meeting default touch track within the default time period, or the touch signal meeting default touch track is whether detected beyond the default time period, then it is required for forwarding step 205 to, signal scanning touch screen is scanned with first.
In some optional implementations of the present embodiment, the above-mentioned touch signal meeting default touch track at least includes the touch figure of touch coordinate, each touch coordinate composition, and the sequencing that each touch coordinate is in touch process all matches with default touch track.Here, the touch track preset can be arranged flexibly, such as, above-mentioned default touch track can be as shown in Figure 3, when scanning signal scanning touch screen with first, detect the presence of touch signal, then it is switched to the second above-mentioned touch screen of scanning signal scanning, disconnect the electrical connection between touch electrode, and detection is whether above-mentioned touch signal is that the point 301 specified in such as Fig. 3 reaches home 302 in the direction of the arrow for starting point, if, then represent and the touch signal matched with default touch track detected, if not, then represent the touch signal being not detected by matching with default touch track.
In some optional implementations of the present embodiment, the frequency of above-mentioned 3rd scanning signal is more than the rate of scanning of the rate of scanning of above-mentioned scan signal and above-mentioned second scanning signal.Here, the 3rd scanning signal can be touch screen scanning signal in normal operation.
Step 204, scans signal scanning touch screen with the 3rd.
In the present embodiment, each touch electrode based on step 203 detection receives the touch signal mated with default touch track, scans the above-mentioned touch screen of signal scanning with the 3rd, so that above-mentioned touch screen is entered duty by holding state.
Step 205, scans signal scanning touch screen with first.
In the present embodiment, each touch electrode based on step 203 detection does not receive the touch signal mated with default touch track, scans the above-mentioned touch screen of signal scanning with first, so that above-mentioned touch screen continues to keep holding state.
In some optional implementations of embodiment, when user is not intended to touch touch screen and makes touch screen be switched to the second scanning signal from scan signal, the touch signal that mates with default touch track usually cannot be detected, at this moment touch screen is by still with the first scanning above-mentioned touch screen of signal scanning that rate of scanning is extremely low, thus reducing the purpose of power consumption.
The scan method of the touch screen that above-described embodiment of the application provides, by arranging different rate of scanning to scan signal, the second scanning signal and the 3rd scanning signal, then by corresponding for states different from touch screen respectively to scan signal, the second scanning signal and the 3rd scanning signal, it is possible to farthest reduce touch screen power consumption in the standby state.
With further reference to Fig. 4, it illustrates the structural representation 400 of the application touch screen a embodiment.This touch screen 400 includes multiple touch electrode 401 output line 402 corresponding with each touch electrode, control chip 403 and multiple switch 404.
In the present embodiment, above-mentioned each touch electrode 401 is electrically connected with above-mentioned control chip 403 by output line 402.Wherein, above-mentioned switch 404 includes the first end, the second end and controls end.First end and the corresponding touch electrode 402 of above-mentioned each switch 404 electrically connect, and the second end of above-mentioned each switch 404 is connected with each other, and is electrically connected with control chip 403 by any one bars output lead.
In the present embodiment, above-mentioned control chip 403 exports control signal to control being turned on or off of each switch 404 to the end that controls of each switch 404.
In some optional implementations of the present embodiment, when above-mentioned control chip 403 receives standby command, it sends control signal to the control end of above-mentioned switch 404 and above-mentioned each switch 404 is turned on, each touch electrode 401 on touch screen is connected with each other, short circuit becomes a touch electrode shown in 501 in Fig. 5, here, broken box in Fig. 5 represents each touch electrode 401, and solid box represents the touch electrode 501 after short circuit, touch electrode 501 is electrically connected with control chip 503 by any one bars output lead 502, then with the electrode 501 after the first scanning signal scanning short circuit, although now touch electrode 501 can not detect the coordinate of touch signal, but can detect whether there is touch signal.If be detected that touch signal, then control chip 403 makes above-mentioned each switch 404 disconnect to the control end transmission control signal of above-mentioned switch 404, namely in touch screen, the touch electrode of short circuit disconnects, and scan each touch electrode after signal scanning disconnects with second, to detect whether to there is the touch signal mated with default touch track.
It should be noted that, above-mentioned control chip 403 controls conducting and the disconnection of above-mentioned switch 404 by control signal, namely each touch electrode in touch screen 401 whether short circuit is controlled, so that scanning signal scanning touch screen with first during touch electrode short circuit, signal scanning touch screen is scanned with second when touch electrode disconnects, above-mentioned touch screen can effectively reduce power consumption, and this touch screen can also further reduce the burden of touch chip 403 simultaneously.
In some optional implementations of the present embodiment, above-mentioned switch 404 can be metal-oxide-semiconductor, wherein control the grid that end can be above-mentioned metal-oxide-semiconductor, first end can be the first pole of above-mentioned metal-oxide-semiconductor, second end can be the second pole of above-mentioned metal-oxide-semiconductor, and first here can be extremely the source electrode of above-mentioned metal-oxide-semiconductor, and the second pole is the drain electrode of this metal-oxide-semiconductor, or first can be extremely the drain electrode of above-mentioned metal-oxide-semiconductor, and the second pole is the source electrode of this metal-oxide-semiconductor；And the first pole of each metal-oxide-semiconductor and corresponding touch electrode 401 electrically connect, the second pole of each metal-oxide-semiconductor is connected with each other, and is electrically connected with control chip 403 by any one bars output lead 402, and the grid of each metal-oxide-semiconductor electrically connects with above-mentioned control chip 404.Here, above-mentioned control chip 403 utilizes the characteristic of switch of metal-oxide-semiconductor, and the current potential being controlled the grid of each MOS by control signal makes metal-oxide-semiconductor on or off, reaches the purpose of each touch electrode short circuit or disconnection.
In some optional implementations of the present embodiment, above-mentioned control chip 404 may be used for exporting control signal to the grid of each metal-oxide-semiconductor and controls the conducting of each metal-oxide-semiconductor so that each touch electrode 401 is electrically connected with any one bars output lead 402 afterwards by the second of each MOS the extremely short connecing；And exporting control signal control each metal-oxide-semiconductor shutoff to the grid of each metal-oxide-semiconductor so that each touch electrode 401 is electrically connected with above-mentioned control chip 403 by output line 402.
In some optional implementations of the present embodiment, above-mentioned metal-oxide-semiconductor can be PMOS or NMOS tube, and the grid that above-mentioned control chip 403 can control metal-oxide-semiconductor is in different current potentials, so that metal-oxide-semiconductor on or off.Such as, when above-mentioned switch 404 is PMOS, when touch screen receives standby command, it is electronegative potential that above-mentioned control chip 404 controls the grid of each PMOS, each PMOS is turned on, i.e. each touch electrode 401 short circuit, and with the touch electrode after the first scanning signal scanning short circuit；If touch signal being detected, it is high potential that above-mentioned control chip 403 can control the grid of each PMOS again, each PMOS is turned off, the i.e. disconnection of the touch electrode of short circuit, and scan each touch electrode after signal scanning disconnects with second, to detect whether to there is the touch signal mated with default touch track.
In above-described embodiment of the application, control chip 403 is by controlling being turned on or off of the switches such as such as metal-oxide-semiconductor, make each corresponding short circuit of touch electrode 401 or disconnection, then adopt scan signal or the second scanning signal scanning touch screen of correspondence, to reduce the power consumption of touch screen, reduce the burden of control chip 403.
With further reference to Fig. 6, it illustrates the oscillogram of scan signal and the second scanning signal in above-described embodiment.As it can be seen, the pulse signal opposite polarity of scan signal 601 and the second scanning signal 602 adjacent periods.
In this implementation, the above-mentioned scan signal 601 opposite polarity within the adjacent scan period, the above-mentioned second scanning signal 602 opposite polarity within the adjacent scan period.Here, any one scan period choosing scan signal 601 was the first scan period, and the next cycle of this first scan period was the second scan period, as it can be seen, the opposite polarity of the scanning signal of above-mentioned first scan period and the second scan period；In like manner, the polarity of the scanning signal of the first adjacent scan period in the second scanning signal 602 and the second scan period is also contrary.Here, contrary by controlling the pulse polarity of touch electrode in scan signal 601 and the second scanning signal 602 adjacent scan period, it is prevented that touch screen occurs the phenomenon of liquid crystal polarization in the standby state.
Above-described embodiment of the application can pass through to change scan signal 601 and the second polarity scanning in the scan period that signal 602 is adjacent, solves the problem because liquid crystal polarization causes display screen to glimmer.
With continued reference to Fig. 7, realization as the scan method to touch screen shown in above-mentioned each figure, this application provides the scanning system of a kind of touch screen a embodiment, this system embodiment is corresponding with the embodiment of the method for above-mentioned Fig. 2, and all or part of module in this system can apply in the software of control chip.
In the present embodiment, the scanning system 700 of touch screen includes the first scan module 701 and the second scan module 702.Wherein, the first scan module 701 is for receiving standby command in response to touch screen, by each touch electrode short circuit of touch screen, and scans the above-mentioned touch electrode of signal scanning with first；If the second scan module 702 is for touch signal being detected, then disconnecting the electrical connection between each above-mentioned touch electrode, and scan each touch electrode of signal scanning with second, wherein, the rate of scanning of the second scanning signal is more than the rate of scanning of above-mentioned scan signal.
In some optional implementations of the present embodiment, said system 700 also includes the touch signal that detection module (not shown) mates with default touch track for detecting each touch electrode whether to receive；If the touch signal mated with above-mentioned default touch track being detected, then scan the above-mentioned touch screen of signal scanning with the 3rd；Wherein, the frequency of the 3rd scanning signal is more than the rate of scanning of the rate of scanning of above-mentioned scan signal and above-mentioned second scanning signal.
In some optional implementations of the present embodiment, if being not detected by the touch signal mated with above-mentioned default touch track, then scan the above-mentioned touch screen of signal scanning with above-mentioned first.
In some optional implementations of the present embodiment, above-mentioned scan signal opposite polarity within the adjacent scan period, above-mentioned second scanning signal opposite polarity within the adjacent scan period.
It should be noted that the scanning system 700 of above-mentioned touch screen can apply to various types of touch screen terminal, as having the smart mobile phone of touch function, panel computer, electronic reader etc..The scanning system of the touch screen that above-described embodiment of the application provides, in the standby state, for different touch situations, it is respectively adopted scan signal or the second scanning signal scanning touch screen, the power consumption of touch screen can be effectively reduced, extend the stand-by time of touch screen terminal.
Needing explanation, the present invention can be carried out various change and deformation without deviating from the scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Additionally, the embodiment of the present application also provides for a kind of touch panel device, including the touch screen in above-described embodiment.In this touch panel device, the concrete structure of touch screen and the scan method touch screen of touch screen are same as the previously described embodiments, repeat no more here.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, invention scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, when also should be encompassed in without departing from described inventive concept simultaneously, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed.Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed.
Claims (12)
1. the scan method of a touch screen, it is characterised in that described method includes:
Receive standby command in response to touch screen, by each touch electrode short circuit of described touch screen, and scan touch electrode described in signal scanning with first；
If touch signal being detected, then disconnecting the electrical connection between each described touch electrode, and scan each described touch electrode of signal scanning with second, wherein, the rate of scanning of described second scanning signal is more than the rate of scanning of described scan signal.
2. the scan method of touch screen according to claim 1, it is characterised in that described method also includes:
Detect whether each described touch electrode receives the touch signal mated with default touch track；
If the touch signal mated with described default touch track being detected, then scan touch screen described in signal scanning with the 3rd；
Wherein, the rate of scanning of described 3rd scanning signal is more than the rate of scanning of the rate of scanning of described scan signal and described second scanning signal.
3. the scan method of touch screen according to claim 2, it is characterised in that described method also includes:
If being not detected by the touch signal mated with described default touch track, then scan touch screen described in signal scanning with described first.
4. the scan method according to the touch screen one of claim 1-3 Suo Shu, it is characterised in that described scan signal opposite polarity within the adjacent scan period, described second scanning signal opposite polarity within the adjacent scan period.
5. a touch screen, it is characterised in that include multiple touch electrode output line corresponding with each touch electrode, control chip and multiple switch, wherein, described switch includes the first end, the second end and controls end；
Each described touch electrode is electrically connected with described control chip by described output line；
First end of each described switch and the electrical connection of corresponding touch electrode；
Second end of each described switch is connected with each other, and is electrically connected with described control chip by any one described output line；
Described control chip exports control signal to control being turned on or off of each described switch to the end that controls of each described switch.
6. touch screen according to claim 5, it is characterised in that described switch is metal-oxide-semiconductor, described control end is the grid of described metal-oxide-semiconductor, and described first end is the first pole of described metal-oxide-semiconductor, and described second end is the second pole of described metal-oxide-semiconductor；
First pole of each described metal-oxide-semiconductor and the electrical connection of corresponding touch electrode；
Second pole of each described metal-oxide-semiconductor is connected with each other, and is electrically connected with described control chip by any one described output line；
The grid of each described metal-oxide-semiconductor electrically connects with described control chip.
7. touch screen according to claim 6, it is characterized in that, described control chip controls the conducting of each described metal-oxide-semiconductor for exporting control signal to the grid of each described metal-oxide-semiconductor so that each described touch electrode rear is electrically connected with described any one bars output lead by the second of each described MOS the extremely short connecing；And
Export control signal to the grid of each described metal-oxide-semiconductor and control the shutoff of each described metal-oxide-semiconductor so that each described touch electrode is electrically connected with described control chip by described output line.
8. the scanning system of a touch screen, it is characterised in that described system includes:
First scan module, for receiving standby command in response to touch screen, by each touch electrode short circuit of described touch screen, and scans touch electrode described in signal scanning with first；
Second scan module, if for touch signal being detected, then disconnect the electrical connection between each described touch electrode, and scan each described touch electrode of signal scanning with second, wherein, the rate of scanning of described second scanning signal is more than the rate of scanning of described scan signal.
9. the scanning system of touch screen according to claim 8, it is characterised in that described system also includes:
Detection module, for detecting whether each described touch electrode receives the touch signal mated with default touch track；
If the touch signal mated with described default touch track being detected, then scan touch screen described in signal scanning with the 3rd；
Wherein, the frequency of described 3rd scanning signal is more than the rate of scanning of the rate of scanning of described scan signal and described second scanning signal.
10. the scanning system of touch screen according to claim 9, it is characterised in that if being not detected by the touch signal mated with described default touch track, then scan touch screen described in signal scanning with described first.
11. the scanning system of one of-10 described touch screens according to Claim 8, it is characterised in that described scan signal opposite polarity within the adjacent scan period, described second scanning signal opposite polarity within the adjacent scan period.
12. a touch panel device, it is characterised in that include the touch screen as described in one of claim 5-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610037278.5A CN105739757B (en) | 2016-01-20 | 2016-01-20 | The scan method and system of touch screen, touch screen and touch panel device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610037278.5A CN105739757B (en) | 2016-01-20 | 2016-01-20 | The scan method and system of touch screen, touch screen and touch panel device |
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| CN105739757A true CN105739757A (en) | 2016-07-06 |
| CN105739757B CN105739757B (en) | 2019-03-22 |
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| CN201610037278.5A Active CN105739757B (en) | 2016-01-20 | 2016-01-20 | The scan method and system of touch screen, touch screen and touch panel device |
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