CN206479968U - Touch chip and touch apparatus - Google Patents

Touch chip and touch apparatus Download PDF

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Publication number
CN206479968U
CN206479968U CN201621085658.8U CN201621085658U CN206479968U CN 206479968 U CN206479968 U CN 206479968U CN 201621085658 U CN201621085658 U CN 201621085658U CN 206479968 U CN206479968 U CN 206479968U
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touch
screen
passage
driving passage
output
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CN201621085658.8U
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陈小祥
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Huiding Technology Co Ltd
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Abstract

The utility model provides a kind of touch chip and touch apparatus.The touch chip includes：Drive circuit, for driving passage output drive signal to S of touch-screen in present scanning cycle, touch-screen has M driving passage, and M is positive integer, and S is the positive integer less than M；Sensor circuit, for when drive circuit is to the S each driving passage output drive signal driven in passage, receiving the induced signal of N number of induction channels output of touch-screen, N is positive integer；Processing unit, for according to drive circuit to S driving passage output drive signal when, sensor circuit receive N number of induction channels export induced signal, detection touch-screen on touch point；Output interface, the information of the touch point for exporting processing unit detection.Touch chip of the present utility model and touch apparatus, can effectively shorten the detection time of the touch point of touch-screen, so as to improve the report point rate of touch-screen and save the power consumption of touch chip.

Description

Touch chip and touch apparatus
Technical field
The utility model is related to touch chip and touch apparatus in electronics field, more particularly to electronic product.
Background technology
In existing electronic product, for touch-screen, such as capacitive touch screen is required in each scan period Touch chip exports one or many signals to each drives line of touch-screen and is driven, i.e., all drives lines are carried out Scanning, and signal is received from the corresponding line of induction, the touch point on touch-screen is then detected according to change amount signal, is such as counted Calculate the position that finger is touched on touch-screen.
The mode that this whole screen is all scanned needs to consume more sweep time, influences whether the report point rate of touch-screen, together When due to sweep time it is long, cause scanning process chips power consumption big.
The content of the invention
The utility model provides touch chip and touch apparatus, during the detection for the touch point that can effectively shorten touch-screen Between, so as to improve the report point rate of touch-screen and save the power consumption of touch chip.
In a first aspect, the utility model provides a kind of touch chip, including：Drive circuit, in Current Scan week Passage output drive signal is driven to S of touch-screen in phase, the touch-screen has M driving passage, and M is positive integer, and S is small In M positive integer；Sensor circuit, is exported for each driving passage when the drive circuit into described S driving passage During drive signal, the induced signal of N number of induction channels output of the touch-screen is received, N is positive integer；Processing unit, is used for According to the drive circuit to described S driving passage output drive signal when, the sensor circuit receive N number of sensing The induced signal of passage output, detects the touch point on the touch-screen；Information for exporting the touch point.
In the utility model embodiment, touch chip only needs to drive passage output drive signal to the part of touch-screen, Then the induced signal of whole induction channels output of touch-screen is received, touching on touch-screen is detected further according to these induced signals Touch a little so that touch chip to touch-screen without carrying out full screen scanning, so as to effectively shorten the inspection of the touch point on touch screen The survey time, and then improve the report point rate of touch-screen and the power consumption of reduction touch chip.
In a kind of possible implementation, S=M/2, K=N, described S drives any two driving passage in passage It is non-conterminous.
In a kind of possible implementation, the processing unit detects i-th of driving in the S driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable in the present scanning cycle At least one driving passage output drive signal, i in the introversive M driving passage, adjacent with described i-th driving passage For the positive integer less than or equal to S；Wherein, the sensor circuit is additionally operable to receive the drive circuit to described i-th driving During the adjacent driving passage output drive signal of passage, the induced signal of N number of induction channels output；The processing unit is also For according to the drive circuit to described i-th driving passage adjacent driving passage output drive signal when, the sensing The induced signal for N number of induction channels output that circuit is received, detects the touch point on the touch-screen.
In the utility model embodiment, in touch chip each scan period only into all driving passages of touch-screen Half drives passage output drive signal, when some detected in the driving passage of this half quantity drives passage in touch-screen When there is touch point upper corresponding position, then to the adjacent driving passage output drive signal of the driving passage, then obtain these The induced signal of all induction channels output of touch-screen, believes further according to these sensings during adjacent driven passage input drive signal Number detection touch-screen on touch point.So, finer detection can be carried out to the touch point on touch-screen.
In a kind of possible implementation, the drive circuit is additionally operable within next scan period to the M Drive the M-S driving passage output drive signal in addition to described S drives passage in passage；The sensor circuit is additionally operable to connect When receiving each driving passage output drive signal of the drive circuit into described M-S driving passage, N number of sensing it is logical The induced signal of road output；The processing unit is additionally operable to be driven to described M-S driving passage output according to the drive circuit During dynamic signal, the induced signal for N number of induction channels output that the sensor circuit is received detects touching on the touch-screen Touch a little.
In the utility model embodiment, touch chip is in next scan period into all driving passages of touch-screen Second half driving passage output drive signal, then receives the induced signal of all induction channels output of touch-screen, according to this Touch point on a little induced signal detection touch-screens, it is ensured that the touch on this second half corresponding position of driving passage Point is not detected among then, being scanned in this scan period in upper a cycle, so as to reduce the missing inspection of touch point Rate, and then improve report point rate.
In a kind of possible implementation, the processing unit detects j-th in the M-S driving passage Passage is driven when corresponding position has touch point on the touch-screen, the drive circuit is additionally operable to next sweep described Retouch at least one driving passage output driving into described M driving passage, adjacent with described j-th driving passage in the cycle Signal, j is the positive integer less than or equal to M-S；The sensor circuit is additionally operable to receive the drive circuit to described j-th drive During the adjacent driving passage output drive signal of dynamic passage, the induced signal of N number of induction channels output；The processing unit Be additionally operable to according to the drive circuit to described j-th driving passage adjacent driving passage output drive signal when, the sense The induced signal that the N number of induction channels for answering circuit to receive are exported, detects the touch point on the touch-screen.
In the utility model embodiment, when some the driving passage detected in the driving passage of this second half quantity is being touched When touching the upper corresponding position of screen and having touch point, then to the adjacent driving passage output drive signal of the driving passage, then obtain The induced signal of all induction channels output of touch-screen during these adjacent driven passage input drive signals, further according to these senses Touch point on induction signal detection touch-screen.So, finer detection can be carried out to the touch point on touch-screen.
Second aspect, the utility model provides touch chip, including：Drive circuit, in present scanning cycle Passage output drive signal is driven to M of touch-screen, M is positive integer；Sensor circuit, for when the drive circuit is to described During each driving passage output drive signal in M driving passage, the sense that K induction channels of the touch-screen are exported is received Induction signal, the touch-screen has N number of induction channels, and N is positive integer, and K is the positive integer less than N；Processing unit, for according to institute State drive circuit to described M driving passage output drive signal when, the sensor circuit receive the K induction channels it is defeated The induced signal gone out, detects the touch point on the touch-screen；Output interface, the information for exporting the touch point.
In the utility model embodiment, touch chip drives passage output drive signals to the whole of touch-screen, then only The induced signal of the part induction channels output of touch-screen is received, the touch on touch-screen is detected further according to these induced signals Point so that touch chip to touch-screen without carrying out full screen scanning, so as to effectively shorten the detection of the touch point on touch screen Time, and then improve the report point rate of touch-screen and the power consumption of reduction touch chip.
In a kind of possible implementation, K=N/2, any two induction channels not phase in the K induction channels It is adjacent.
In a kind of possible implementation, the processing unit detects i-th of driving in the M driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable in the present scanning cycle It is defeated with the described i-th adjacent driving passage of driving passage in introversive i-th of driving passage and the M driving passage Go out drive signal, i is the positive integer less than or equal to M；Wherein, the sensor circuit is additionally operable to receive the drive circuit to institute When stating i-th of driving passage and i-th of driving adjacent driving passage output drive signal of passage, N number of sensing it is logical The induced signal of N-K output in road in addition to the K induction channels；The processing unit is additionally operable to according to the driving electricity When i-th of driving passage described in road direction and i-th of driving adjacent driving passage output drive signal of passage, the sensing The induced signal for the N-K induction channels output that circuit is received, detects the touch point on the touch-screen.
In the utility model embodiment, the half induction channels that touch-screen is only received in touch chip each scan period are defeated The induced signal gone out, has touch point in corresponding position on the touchscreen when detecting some driving passage according to these induced signals When, then to the driving passage of the touch-screen driving passage output drive signal adjacent with its, then receive second half sensing logical The induced signal of road output, the touch point on touch-screen is detected further according to these induced signals.So, can be on touch-screen Touch point carries out finer detection.
In a kind of possible implementation, the drive circuit is additionally operable within next scan period to the M Drive passage output drive signal；The sensor circuit is additionally operable to receive the drive circuit into described M driving passage N-K sensing during each driving passage output drive signal, in N number of induction channels in addition to the K induction channels is logical The induced signal of road output；The processing unit is additionally operable to drive passage output driving to described M according to the drive circuit During signal, the induced signal for the N-K induction channels output that the sensor circuit is received detects touching on the touch-screen Touch a little.
In a kind of possible implementation, the processing unit detects j-th of driving in the M driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit was additionally operable in next scanning week It is defeated with the described j-th adjacent driving passage of driving passage into described j-th driving passage and the M driving passage in phase Go out drive signal, j is the positive integer less than or equal to M-S；The sensor circuit is additionally operable to receive the drive circuit to described When j-th of driving passage and j-th of driving adjacent driving passage output drive signal of passage, the K induction channels The induced signal of output；The processing unit is additionally operable to drive passage and the jth to described j-th according to the drive circuit It is individual driving passage it is adjacent driving passage output drive signal when, the sensor circuit receive the K induction channels export Induced signal, detect the touch point on the touch-screen.
In the utility model embodiment, when the induced signal exported according to this second half induction channels detects all drives Some driving passage in dynamic passage is when there is touch point corresponding position on the touchscreen, then adjacent with its to the driving passage Driving passage output drive signal again, then receive in all induction channels of touch-screen in addition to this second half induction channels Other induction channels output induced signal, further according to these induced signals detect touch-screen on touch point.So, can be with Finer detection is carried out to the touch point on touch-screen.
In a kind of possible implementation, the sensor circuit is additionally operable to drive to described M in the drive circuit During passage output drive signal, alternating is received in the K induction channels and N number of induction channels except described K sensing is logical The induced signal of N-K induction channels output outside road；The processing unit be additionally operable to according in the drive circuit to the M During individual driving passage output drive signal, the sensor circuit replaces the K induction channels received and described N-K senses The induced signal of passage output, detects the touch point on the touch-screen.
In the utility model embodiment, touch chip is driven in continuous multiple scan periods to all driving passage outputs During dynamic signal, touch chip alternately receives the induced signal of K induction channels and the output of other part induction channels, so as to ensure The touch point being located on touch-screen on all driving passages can be detected, and finally reduce loss.
The third aspect, the utility model provides a kind of touch apparatus, includes the touch-control core of first aspect or second aspect Piece, and touch-screen, the touch-screen include driving passage and induction channels, and the driving passage is used to receive the touch-control core The drive signal of the drive circuit output of piece, the induction channels are used for the coupling for sensing the drive signal on the driving passage Signal, and the sensor circuit output using the coupled signal as induced signal to the touch chip.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Accompanying drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 is the schematic diagram of the scene for the touch chip that can apply the utility model embodiment.
Fig. 2 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 3 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 4 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 5 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 6 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 7 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 8 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Fig. 9 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Figure 10 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Figure 11 is the indicative flowchart of the method for the touch point that touch-screen is detected using touch chip of the present utility model.
Figure 12 is the signal frame diagram of the touch chip of the utility model one embodiment.
Figure 13 is the signal frame diagram of the touch chip of the utility model one embodiment.
Figure 14 is the signal frame diagram of the touch chip of the utility model one embodiment.
Figure 15 is the signal frame diagram of the touch apparatus of the utility model one embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.
In order to make it easy to understand, first description can apply the touch of the detection touch-screen of the utility model embodiment on the whole The exemplary plot of the touch-screen of the method for point and the system architecture of touch chip.It should be understood that the detection of the utility model embodiment is touched The method for touching the touch point of screen is not limited to the detection touch-screen of system architecture shown in Fig. 1, i.e. the utility model embodiment The method of touch point is except that can detect the touch point of the touch-screen shown in Fig. 1, and it can be also used for detecting touching for other structures Touch the touch point of screen.
Scene shown in Fig. 1 includes touch-screen 110 and touch chip 120.Touch-screen is referred to as touch panel.Touch It can be capacitive touch screen to touch screen 110, more specifically can be projection-type mutual capacitance touchscreens.Wherein, touch-screen 110 includes M driving passage and N number of induction channels.Touch chip 120 includes drive circuit 121 and sensor circuit 122.In the utility model In, drive circuit is alternatively referred to as driver element, and sensor circuit is alternatively referred to as sensing unit.
Touch chip 120 is referred to as touch controller or touch detection module, and its drive circuit 121 included is with touching M driving passage for touching screen 110 is connected, the sensor circuit 122 of touch chip 120 and N number of induction channels phase of touch-screen 110 Even.
The drive circuit 121 of touch chip 120 is used to drive passage output drive signal, touch-control to M of touch-screen 110 The sensor circuit 122 of chip 120 is used for the induced signal of reception or N number of induction channels output of induction touch panel.
M driving passage of touch-screen 110 is used to input the drive signal that the drive circuit 121 of touch chip 120 is exported, N number of induction channels of touch-screen 110 drive passage for the drive circuit 121 in touch chip 120 to some of touch-screen 110 During the drive signal of output, induced signal is exported to the sensor circuit 122 of touch chip 120.
At present, touch chip 120 detect touch-screen 110 on touch point when, within a scan period, touch chip 120 drive circuit 121 drives driving passage output drive signal of any one of passage to M of touch-screen 110, touches Touch the driving channel reception drive signal of screen 110.Electricity is coupled due to driving to exist between passage and induction channels on touch-screen Hold, so induction channels can sense the signal for carrying out self-driven passage, i.e., the coupled signal of drive signal can be produced in induction channels, The coupled signal is also referred to as induced signal in the utility model.Then, N number of induction channels of touch-screen 110 are successively to touch-control The sensor circuit of chip 120 exports the induced signal in the induction channels, and the sensor circuit of touch chip 120 receives each sensing The induced signal of passage output.Finally, touch chip 120 can be according to the drive circuit 121 of touch chip 120 to touch-screen Believe after 110 M driving passage difference all output drive signals, from all sensings of the M induction channels reception of touch-screen 110 Number detection touch-screen on touch point, calculate the position of the touch point.
Assuming that the drive circuit 121 of touch chip 120 drives holding for passage output drive signal to one of touch-screen 110 The continuous time is T, in T time, and N number of induction channels of touch-screen 110 are altogether N number of to the sensor circuit output of touch chip 120 Induced signal.Therefore the drive circuit 121 of touch chip 120 to M driving passage of touch-screen 110, all believe respectively by output driving After number, the sensor circuit of touch chip 120 receives M*N induced signal of the M induction channels output of touch-screen 110 altogether, Total time is T*M.
The detection method for the touch point for carrying out touch-screen using the touch chip of the utility model embodiment is as shown in Figure 2. It should be understood that the step of Fig. 2 shows the method for the touch point of the touch chip detection touch-screen of this implementation new embodiment or behaviour Make, but these steps or operation are only examples.
S210, touch chip drives passage output drive signal, touch-screen in present scanning cycle to S of touch-screen There is M driving passage.Wherein, M is positive integer, and S is the positive integer less than M.
The touch chip can be the touch chip 120 in Fig. 1, and the touch-screen can be the touch-screen 110 in Fig. 1.Should Step can be specifically that the drive circuit of touch chip is sequentially output drive signal to S driving passage of touch-screen.
S refers to a total of M driving passage of touch chip for the positive integer less than M, and touch chip is only to touch-screen Part driving passage output drive signal.
S220, when touch chip is to the S each driving passage output drive signal driven in passage, touch chip connects Receive the induced signal of N number of induction channels output of touch-screen.Wherein, N is positive integer.
A total of N number of induction channels of touch-screen, so represent touch chip reception herein is all sensings of touch-screen The induced signal of passage output.
When touch chip receives each driving passage output drive signal of the touch chip into S driving passage, touch The induced signal of all induction channels output of screen, can specifically refer to touch chip into S driving passage of touch-screen First driving passage output drive signal, touch chip receives the induced signal of all induction channels output of touch-screen, so The second driving passage output drive signal that touch chip is driven in passage to S of touch-screen afterwards, touch chip, which is received, to be touched The sensing channel of all induction channels output of screen, until the S driving of the touch chip into S driving passage of touch-screen Passage output drive signal, touch chip receives the sensing channel of all induction channels output of touch-screen.
S230, touch chip according to touch chip to S driving passage in driving passage output drive signal when, touch-control Touch point on the induced signal for N number of induction channels output that chip is received, detection touch-screen.
Chip is touched to detect behind the touch point on touch-screen, can be by output interface to other units, module or core The information for the touch point that piece output is detected, the positional information of such as touch point, in order to which other units, module or chip are according to tactile The information touched a little carries out subsequent operation.
Touch chip detects the touch point on touch-screen according to the induced signal received in S220, can be specifically meter Calculate the position of the touch point on touch-screen.
It follows that touch chip detection touch-screen on touch point used in induced signal swept not by full frame Acquisition is retouched, for full screen scanning, and is simply scanned in all induced signals that scanning is needed in full screen scanning Part induced signal, therefore, it can effectively shorten the detection time of the touch point on touch screen, and then improve the report point rate of touch-screen With the power consumption of reduction touch chip.
In the utility model embodiment, alternatively, touch chip can be within a scan period only to M of touch-screen Drive the driving passage output drive signal of the half quantity in passage, i.e. S=M/2.Wherein, appointing in this S driving passage Two driving passages of meaning can be mutual non-conterminous driving passage two-by-two in M of touch-screen driving passage.As this S driving is logical Road can be the driving passage of all odd bits after the M driving passage sequence by touch-screen, or can be all even numbers The driving passage of position.
So, even if a length of T driving is believed when a driving passage of the touch chip into this S driving passage is exported Number, touch chip receive touch-screen all induction channels output induced signal, touch chip to all S drive passages all After output drive signal, all induced signals that touch chip is received from all induction channels of touch-screen at most also only have M*N/ 2, the time of whole process is M*T/2.It can thus be seen that the method for the utility model embodiment can effectively shorten detection Time, the quantity of the data of position for calculating touch point is reduced, so as to and then improve report point rate and the reduction of touch-screen The power consumption of touch chip.
In the utility model example, touch chip is driving passage output drive signal and from touching to this S of touch-screen Touch screen all induction channels receive induced signal, according to these induced signal detected touch points after, touch chip can be under M-S driving passage output driving of one scan period into M driving passage of touch-screen in addition to this S drives passage is believed Number, the induced signal of all induction channels output of touch-screen is then received, is detected further according to these induced signals on touch-screen Touch point.It can so allow the touch point on the S any driving passage for driving in passage all in the scanning Phase is detected, so as to lower the loss of touch point.
In the utility model embodiment, either touch chip to S of touch-screen driving passage output drive signal, connect Receive the induced signal of all induction channels output of touch-screen and the touch point of touch-screen is detected according to these induced signals, still Touch chip receives all induction channels output of touch-screen to the other M-S driving passage output drive signal of touch-screen Induced signal and according to these induced signals detect touch-screen touch point, when touch chip detect some driving passage exist On touch-screen during corresponding position Shang You touch points, touch chip can drive into M driving passage of touch-screen with this The adjacent driving passage output drive signal of passage, while receiving the induced signal of all induction channels output of touch-screen, most Afterwards further according to these induced signal detected touch points, can be specifically according to these induced signals and between the induced signal that receives Calculate the position of touch point.
It should be understood that described in the utility model embodiment some driving passage adjacent driven passage can be directly with this The adjacent driving passage of driving passage or the driving passage of indirect neighbor.Adjacent driven such as the first driving passage is led to Road can include the second driving passage with the first driving passage direct neighbor, can also include not direct with the first driving passage It is adjacent but with second driving passage direct neighbor driving passage.
Alternatively, touch chip detect some driving passage on the touchscreen corresponding position Shang You touch points when, touch Control the tool for the driving passage output drive signal that chip can be adjacent with this driving passage into M driving passage of touch-screen Body step can be：Touch chip receives all induction channels and exported to this driving passage output drive signal, touch chip Induced signal and detect there there is behind touch point the corresponding position of driving passage on touch-screen according to this N induced signal, to this The adjacent driven passage output drive signal of individual driving passage, to carry out follow-up process；Can also be：Touch chip is driven to S Dynamic passage output drive signal, touch chip receive the induced signal of all induction channels outputs and believed according to this N*S sensing Number detect there there is behind touch point the corresponding position of driving passage on touch-screen, the adjacent driven passage to this driving passage is defeated Go out drive signal, to carry out follow-up process.
It should be understood that touch chip only drives passage output drive signal to the part of touch-screen, but this S driving passage is simultaneously The driving passage of half quantity on touch-screen is not limited to, even the driving passage of half quantity, is also not necessarily limited to be two neither Adjacent driving passage.As this S driving passage can include being located at all driving passages in the middle part of touch-screen and touch-screen side Part driving passage on edge, can also be driven according to the arrangement mode at on-fixed interval, or can be according to " random Then " arrangement mode is driven, such as " 1,3,4,7,9,10,13,15,16,19 ... " or " 1,2,5,6,8,10,12,14,16, 17”.The utility model is not restricted to the scope of S driving passage.
It is discussed in detail with reference to Fig. 3 and Fig. 4 and detects touch-screen using the touch chip of the utility model one embodiment Touch point method.
As shown in figure 3, having 10 driving passages, respectively Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9 on touch-screen 310 And Y10, there are 8 induction channels, respectively X1, X2, X3, X4, X5, X6, X7 and X8 on touch-screen 310.Driving passage in Fig. 3 If with induction channels intersection with oblique line, when representing touch chip to the driving passage output drive signal, touch chip is received The induced signal that the induction channels are received and exported.The round frame of black in Fig. 3 represents the touch point on touch-screen.
In a cycle, touch chip 320 is received and touched to the driving passage Y1 output drive signals of touch-screen 310 The induced signal of 8 induction channels output of screen 310, according to no touch point on this 8 induced signal detection driving passage Y1. Touch chip 320 receives the induced signal of 8 induction channels output to driving passage Y3 output drive signals, according to this 8 senses No touch point on induction signal detection driving passage Y3.Touch chip 320 receives 8 senses to driving passage Y5 output drive signals The induced signal for answering passage to export, the touch point on driving passage Y5 is detected according to this 8 induced signals.
Touch chip 320 is detected to be had behind touch point on driving passage Y5, to driving passage Y4 output drive signals, is received The induced signal of 8 induction channels output, Y4 touch point is detected according to this 8 induced signals；Touch chip 320 is logical to driving Road Y6 output drive signals, receive the induced signal of 8 induction channels output, and oncontacting on Y6 is detected according to this 8 induced signals Touch a little.
Touch chip 320 continues to driving passage Y7 output drive signals, receives the sensing letter that 8 induction channels are exported Number, according to no touch point on this 8 induced signal detection driving passage Y7.Touch chip 320 continues to driving passage Y9 outputs Drive signal, the induced signal for receiving 8 induction channels output, according to oncontacting on this 8 induced signal detection driving passage Y9 Touch a little.The a cycle of touch detection is so as to terminate.
From the figure 3, it may be seen that touch chip 320 need not be that can detect that touch-screen to all driving passage output drive signals Touch point on 310.
In next cycle, as shown in figure 4, touch chip 320 is believed to the driving passage Y2 output drivings of touch-screen 310 Number, the induced signal of 8 induction channels output of touch-screen 310 is received, according on this 8 induced signal detection driving passage Y2 No touch point.Touch chip 320 receives the induced signal of 8 induction channels output, root to driving passage Y4 output drive signals The touch point on driving passage Y4 is detected according to this 8 induced signals.Represent identical with identical reference in Fig. 3 in Fig. 4 Implication, for sake of simplicity, here is omitted.
Touch chip 320 is detected to be had behind touch point on driving passage Y4, to driving passage Y3 output drive signals, is received The induced signal of 8 induction channels output, no touch point on Y3 is detected according to this 8 induced signals；Touch chip 320 is to driving Passage Y5 output drive signals, receive the induced signal of 8 induction channels output, and touching for Y5 is detected according to this 8 induced signals Touch a little.
Touch chip 320 continues to driving passage Y6 output drive signals, receives the sensing letter of 8 induction channels output Number, according to no touch point on this 8 induced signal detection driving passage Y6.Touch chip 320 to driving passage Y8 output drivings Signal, the induced signal for receiving 8 induction channels output, according to no touch point on this 8 induced signal detection driving passage Y8. Touch chip 320 continues to driving passage Y10 output drive signals, the induced signal that 8 induction channels are exported is received, according to this No touch point on 8 induced signal detection driving passage Y10.
As shown in Figure 4, touch chip 320 again without to it is all driving passage output drive signals be can detect that it is tactile Touch the touch point on screen 310.
Complex chart 3 and Fig. 4 are understood, when on all driving passages on no touch point, touch chip in a cycle only Need to half quantity driving passage output drive signal, with have touch point driving passage quantity increase, touch-control core Piece needs the quantity increase of the driving passage of output drive signal.So long as not all having tactile on the driving passage of this half quantity Touch a little, then touch chip need the driving quantity of output drive signal always less than touch-screen driving passage total quantity.
In the utility model embodiment, touch chip alternately can drive passage and another in the different scan periods to S Outer M-S driving passage output drive signal, for example, alternately drive passage and even number to drive passage output drive signal to odd number (passage output drive signal such as is driven to odd number in the odd scan cycle, drives passage defeated to even number in the even-line interlace cycle Go out drive signal), the induced signal of N number of induction channels output is then received respectively, is calculated and is touched finally according to these induced signals The touch point on screen is touched, the sweep time of each scan period can not only be saved, and the loss of touch point can be reduced.
The utility model embodiment also proposed another touch chip, and it detects showing for the method for the touch point of touch-screen Meaning property flow chart is as shown in Figure 5.
S510, touch chip drives passage output drive signal in present scanning cycle to M of touch-screen.Wherein, M For positive integer, a total of M driving passage of touch-screen is represented.
S520, when touch chip is to the M each driving passage output drive signal driven in passage, touch chip connects Receive the induced signal of the K induction channels output of touch-screen.
Wherein, N is positive integer, represents a total of N number of induction channels of touch-screen；K is the positive integer less than N, represents touch-control The induced signal that chip is exported to the part induction channels for receiving touch-screen.
S530, touch chip according to touch chip to M driving passage output drive signal when, touch chip receive K Touch point on the induced signal of individual induction channels output, detection touch-screen.
Chip is touched to detect behind the touch point on touch-screen, can be by output interface to other units, module or core The information for the touch point that piece output is detected, the positional information of such as touch point, in order to which other units, module or chip are according to tactile The information touched a little carries out subsequent operation.
Also just says, the utility model implementation in, all driving passage output drive signals from touch chip to touch-screen when, The induced signal for only needing receiving portion induction channels to export, then can just detect the position of the touch point on touch-screen.
It follows that in the utility model embodiment, touch chip without carrying out full screen scanning to touch-screen, so as to Effectively shorten the detection time of the touch point on touch screen, and then improve report point rate and the power consumption of reduction touch chip of touch-screen Amount.
In the utility model embodiment, alternatively, touch chip can within whole from a scan period to touch-screen Drive passage output drive signal when, can only receive touch-screen N number of induction channels in half quantity induction channels it is defeated The induced signal gone out, i.e. K=N/2.Wherein, any two induction channels in this K induction channels can be the N number of of touch-screen In induction channels two-by-two mutually non-conterminous induction channels.If this K induction channels can be by N number of induction channels row of touch-screen The induction channels of all odd bits after sequence, or can be the induction channels of all even bits.
So, touch chip is driven after passages all output drive signals to all, K sensing of the touch chip from touch-screen All induced signals of channel reception at most also only have M*N/2.It can thus be seen that the method for the utility model embodiment can With effective time for shortening detection, the quantity of the data of position for calculating touch point is reduced, so as to and then improve touch-screen Report point rate and reduction touch chip power consumption.
In the utility model example, touch chip all driving passage output drive signals to touch-screen and from touch The part induction channels for touching screen receive induced signal, according to these induced signal detected touch points after, touch chip can be under One scan period, then other induction channels of reception touch-screen were defeated to all driving passage output drive signals of touch-screen The induced signal gone out, the touch point on touch-screen is detected further according to these induced signals.
In the utility model embodiment, alternatively, when touch chip is believed to all driving passage output drivings of touch-screen Number, receive touch-screen K induction channels output induced signal and according to these induced signals detection touch-screen touch point When, if touch chip detects some driving passage corresponding position Shang You touch points, touch chip on the touchscreen To the driving passage and the adjacent driven passage output drive signal of the driving passage, then to receive touch-screen in addition again The induced signal of N-K induction channels output, can be specifically according to two finally further according to these induced signal detected touch points The induced signal of secondary reception calculates the position of touch point.
Similarly, alternatively, when all driving passage output drive signals from touch chip to touch-screen, receive touch-screen When the induced signal of other N-K induction channels output and the touch point according to these induced signals detection touch-screen, if touch-control Chip detects some driving passage corresponding position Shang You touch points on the touchscreen, then touch chip can be again to this Passage and the adjacent driven passage output drive signal of the driving passage are driven, the other K sensing for then receiving touch-screen is logical The induced signal of road output, can be specifically according to the sense received twice finally further according to these induced signal detected touch points Induction signal calculates the position of touch point.
It should be understood that described in the utility model embodiment some driving passage adjacent driven passage can be directly with this The adjacent driving passage of driving passage or the driving passage of indirect neighbor.Adjacent driven such as the first driving passage is led to Road can include the second driving passage with the first driving passage direct neighbor, can also include not direct with the first driving passage It is adjacent but with second driving passage direct neighbor driving passage.
It should be understood that touch chip only receives the induced signal of the part induction channels output of touch-screen, but this K sensing is logical Road is not limited to the induction channels of half quantity on touch-screen, even the induction channels of half quantity, is also not necessarily limited to be two Two non-conterminous induction channels.As this K induction channels can include being located at all induction channels in the middle part of touch-screen and touch Part induction channels on platen edge, the utility model is not restricted to the scope of K induction channels.
It is discussed in detail with reference to Fig. 6 and Fig. 7 and detects touching for touch-screen using the touch chip of the utility model embodiment Touch method a little.Same or analogous implication is represented with identical reference in Fig. 3 in Fig. 6 and Fig. 7, in order to detect, herein Repeat no more.
In a cycle, touch chip 320 is believed to driving passage Y1, Y2 and Y3 output driving of touch-screen 310 successively Number, the induced signal that induction channels X1, X3, X5 and X7 of touch-screen 310 are sequentially output then is received, basis is received successively No touch point on induced signal detection driving passage Y1, Y2 and Y3.Touch chip 320 to driving passage Y4 output drive signals, The induced signal of induction channels X1, X3, X5 and X7 output is received, is detected according to this 4 induced signals on driving passage Y4 Touch point.Touch chip 320 receives the sensing of induction channels X1, X3, X5 and X7 output to driving passage Y5 output drive signals Signal, the touch point on driving passage Y5 is detected according to this 4 induced signals.Touch chip 320 is successively to touch-screen 310 Passage Y6 is driven to Y10 output drive signals, then receives what induction channels X1, X3, X5 and X7 of touch-screen 310 were sequentially output Induced signal, successively according to no touch point on the induced signal detection driving passage Y6 to Y10 received.
Because touch chip 320, which is detected on driving passage Y4 and Y5, touch point, therefore as shown in fig. 7, touch chip Again to Y3, Y4, Y5 and Y6 output drive signal, the induced signal of other 4 induction channels X2, X4, X6 and X8 output is received, According to the touch point on the induced signal detection touch-screen received.
The utility model also proposed another touch chip, and it detects the schematic stream of the method for the touch point of touch-screen Journey figure is as shown in Figure 8.
S810, touch chip drives passage output drive signal, touch-screen in present scanning cycle to S of touch-screen There is M driving passage.
Wherein, M is positive integer, and S is the positive integer less than M, represents that touch chip only drives passage to the part of touch-screen Output drive signal.
S820, when touch chip is to the S each driving passage output drive signal driven in passage, touch chip connects The induced signal of the K induction channels output of touch-screen is received, touch-screen there are N number of induction channels.
Wherein, N is positive integer, and K is the positive integer less than N, and the part sensing that expression touch chip only receives touch-screen is logical The induced signal of road output.
S830, touch chip is driven in passage in next scan period to M of touch-screen in addition to S drives passage M-S driving passage output drive signal.
S840, when touch chip is to the M-S each driving passage output drive signal driven in passage, touch chip Receive the induced signal of the N-K induction channels output of the touch-screen.
S850, touch chip according to touch chip to S driving passage output drive signal when, touch chip receive K The induced signal of individual induction channels output, and touch chip is driven during passage output drive signal to M-S, touch chip connects Touch point on the induced signal of the N-K induction channels output of receipts, detection touch-screen.
Chip is touched to detect behind the touch point on touch-screen, can be by output interface to other units, module or core The information for the touch point that piece output is detected, the positional information of such as touch point, in order to which other units, module or chip are according to tactile The information touched a little carries out subsequent operation.
In the utility model embodiment, part driving of the touch chip every time only into all driving passages of touch-screen is logical The induced signal of road output drive signal, also a receiving portion induction channels output, then drives to another part next time Passage output drive signal, receives the induced signal of another part induction channels output, and this causes touch chip to be touched without scanning The induced signal of induction channels output when shielding upper all driving passage input drive signals is touched, touch point can also be detected, from And shorten detection time and reduce detection power consumption, and when having touch point on touch-screen, again will not missing inspection touch point.
Moreover, under the scene that touch chip can not once receive the induced signal that all induction channels are exported, this practicality The method of new embodiment can also obtain all data by several times, so as to complete the detection of touch point.
Alternatively, S=M/2, K=N/2, i.e. touch chip once can be only defeated to the driving passage of touch-screen half quantity Go out drive signal, receive the induced signal that the induction channels of half quantity are exported.
Wherein, any two driving passage in this S driving passage can be any in K induction channels with non-conterminous Two induction channels can be with non-conterminous.
Alternatively, when touch chip detects to drive passage corresponding position on the touchscreen i-th in S driving passage When having put touch point, touch chip can be in the present scanning cycle into the M driving passage of the touch-screen Drive signal twice is exported respectively with the described i-th adjacent driving passage of driving passage, and i is the positive integer less than or equal to S. Then touch chip receive touch chip to i-th of driving passage adjacent driving passage first time output drive signal when, touch The induced signal and touch chip for touching the K induction channels output of screen drive the adjacent driving passage of passage second to i-th During output drive signal, the induced signal of N-K induction channels output.Now, touch chip also needs again logical to i-th of driving Road output drive signal, then touch chip receive touch chip again to i-th driving passage output drive signal when, in addition The induced signal of N-K induction channels output.Finally, touch chip detects the touch-screen according to all induced signals Touch point.
Similarly, alternatively, when touch chip detects to drive passage on the touchscreen j-th in M-S driving passage During corresponding position Shang You touch points, touch chip can be individual to the M of the touch-screen in next scan period Export drive signal twice in driving passage respectively with the described j-th adjacent driving passage of driving passage, j be less than or equal to M-S positive integer.Then touch chip receives touch chip to the adjacent driving passage output drive for the first time of j-th of driving passage During dynamic signal, the induced signal of the N-K induction channels output of touch-screen and touch chip drive the adjacent drive of passage to j-th During dynamic second of output drive signal of passage, the induced signal that K induction channels are exported.Now, touch chip also need again to J-th of driving passage output drive signal, then touch chip reception touch chip is again to j-th of driving passage output driving During signal, the induced signal of K induction channels output in addition.Finally, touch chip is according to all induced signals, and detection is described The touch point of touch-screen.
In the utility model embodiment, touch chip can be exported in each scan period to whole driving passages Channel signal, then alternately receives the sense of K induction channels and the output of other N-K induction channels in the continuous scan period Induction signal, for example, alternately receive the induced signal of odd number induction channels and the output of even number induction channels, finally according to these sensings Touch point on signal of change touch-screen, can not only save the sweep time of each scan period, and can reduce touch point Loss.
The touch point of the touch chip detection touch-screen of the utility model embodiment is discussed in detail with reference to Fig. 9 and 10 Method.Identical implication is represented with identical reference in Fig. 3 in Fig. 9 and 10, for sake of simplicity, here is omitted.
As shown in figure 9, in a cycle, touch chip 320 is believed to the driving passage Y1 output drivings of touch-screen 310 Number, receive the induced signal of induction channels X1, X3, X5 and X7 output of touch-screen 310.Touch chip 320 to driving passage Y3 Output drive signal, receives the induced signal of induction channels X1, X3, X5 and X7 output.Touch chip 320 is to touch-screen 310 Passage Y5 output drive signals are driven, the induced signal of induction channels X1, X3, X5 and X7 output of touch-screen 310 is received.Touch-control Chip 320 receives the induced signal of induction channels X1, X3, X5 and X7 output to driving passage Y7 output drive signals.Touch-control core Piece 320 receives the induced signal of induction channels X1, X3, X5 and X7 output to driving passage Y9 output drive signals.
As shown in Figure 10, in next cycle, touch chip 320 is believed to the driving passage Y2 output drivings of touch-screen 310 Number, receive the induced signal of induction channels X2, X4, X6 and X8 output of touch-screen 310.Touch chip 320 to driving passage Y4 Output drive signal, receives the induced signal of induction channels X2, X4, X6 and X8 output.Touch chip 320 is to touch-screen 310 Passage Y6 output drive signals are driven, the induced signal of induction channels X2, X4, X6 and X8 output of touch-screen 310 is received.Touch-control Chip 320 receives the induced signal of induction channels X2, X4, X6 and X8 output to driving passage Y8 output drive signals.Touch-control core Piece 320 receives the induced signal of induction channels X2, X4, X6 and X8 output to driving passage Y10 output drive signals.
Touch chip 320 detects the touch point on touch-screen according to all induced signals received in said process.Two The scanning result in individual cycle is as shown in figure 11.As shown in Figure 11, it is not necessary to scan all signals and can detect that touch point.
The touch chip of the utility model embodiment is introduced with reference to Figure 12 to Figure 15.It should be understood that Figure 12 to Figure 15 shows The touch chip gone out is only example, and the touch chip of the utility model embodiment may also include other modules or unit, or bag Intimate module of the modules with Figure 12 into Figure 15 is included, or does not really want to include all moulds of the Figure 12 into Figure 15 Block.
Figure 12 is the schematic block diagram of the touch chip 1200 of the utility model one embodiment.Touch chip 1200 includes Drive circuit 1210, processing unit 1220, sensor circuit 1230 and output interface 1240.
Drive circuit 1210, in present scanning cycle, passage output drive signal to be driven to S of touch-screen, The touch-screen has M driving passage, and M is positive integer, and S is the positive integer less than M.
Sensor circuit 1230, for each driving passage output drive signal when drive circuit into S driving passage When, the induced signal of N number of induction channels output of touch-screen is received, N is positive integer.
Processing unit 1220, for according to drive circuit to S driving passage output drive signal when, the sensor circuit The induced signal of the N number of induction channels output received, detects the touch point on the touch-screen.
Output interface 1240, the information for exporting the touch point.
In the utility model embodiment, touch chip only needs to drive passage output drive signal to the part of touch-screen, Then the induced signal of whole induction channels output of touch-screen is received, touching on touch-screen is detected further according to these induced signals Touch a little so that touch chip to touch-screen without carrying out full screen scanning, so as to effectively shorten the inspection of the touch point on touch screen The survey time, and then improve the report point rate of touch-screen and the power consumption of reduction touch chip.
Alternatively, as one embodiment, S=M/2, described S drives any two driving passage in passage non-conterminous.
Alternatively, as one embodiment, the processing unit detects i-th of driving in the S driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable in the present scanning cycle At least one the driving passage output drive signal, i adjacent with described i-th driving passage in the introversive M driving passage For the positive integer less than or equal to S.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to the adjacent drive of described i-th driving passage During dynamic passage output drive signal, the induced signal of N number of induction channels output.
Correspondingly, the processing unit is additionally operable to drive the adjacent drive of passage to described i-th according to the drive circuit During dynamic passage output drive signal, the induced signal for N number of induction channels output that the sensor circuit is received, detection is described Touch point on touch-screen.
Alternatively, as one embodiment, the drive circuit is additionally operable within next scan period drive to described M M-S driving passage output drive signal in dynamic passage in addition to described S drives passage.
Correspondingly, to be additionally operable to receive the drive circuit each into described M-S driving passage for the sensor circuit When driving passage output drive signal, the induced signal of N number of induction channels output.
Correspondingly, the processing unit is additionally operable to drive passage output driving to described M-S according to the drive circuit During signal, the induced signal for N number of induction channels output that the sensor circuit is received detects the touch on the touch-screen Point.
Alternatively, as one embodiment, the processing unit detects j-th of drive in the M-S driving passage Dynamic passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable in next scanning At least one driving passage output driving in cycle into described M driving passage, adjacent with described j-th driving passage is believed Number, j is the positive integer less than or equal to M-S.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to the adjacent drive of described j-th driving passage During dynamic passage output drive signal, the induced signal of N number of induction channels output.
Correspondingly, the processing unit is additionally operable to drive the adjacent drive of passage to described j-th according to the drive circuit During dynamic passage output drive signal, the induced signal for N number of induction channels output that the sensor circuit is received, detection is described Touch point on touch-screen.
Alternatively, as one embodiment, the drive circuit is additionally operable to described S driving passage and the M drive M-S driving passage alternating output drive signal in dynamic passage in addition to described S drives passage.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to described S driving passage and the M-S When driving passage alternating output drive signal, the induced signal of N number of induction channels output.
Correspondingly, the processing unit is additionally operable to individual to described S driving passage and the M-S according to the drive circuit When driving passage alternating output drive signal, the induced signal for N number of induction channels output that the sensor circuit is received, inspection The touch point surveyed on the touch-screen.
It should be understood that above and other operation of the unit of the touch chip of the utility model embodiment shown in Figure 12 And/or function is respectively in order to realize the corresponding flow for touching point methods for detecting touch-screen in Fig. 2, for sake of simplicity, herein not Repeat again.
Figure 13 is the schematic block diagram of the touch chip 1300 of the utility model one embodiment.Touch chip 1300 includes Drive circuit 1310, processing unit 1320, sensor circuit 1330 and output interface 1340.
Drive circuit 1310, for driving passage output drive signal, M to M of touch-screen in present scanning cycle For positive integer.
Sensor circuit 1330, is exported for each driving passage when the drive circuit into described M driving passage During drive signal, the induced signal of the K induction channels output of the touch-screen is received, the touch-screen there are N number of induction channels, N is positive integer, and K is the positive integer less than N.
Processing unit 1320, for according to the drive circuit to described M driving passage output drive signal when, it is described The induced signal for the K induction channels output that sensor circuit is received, detects the touch point on the touch-screen.
Output interface 1340 is used for the information for exporting the touch point, the positional information of such as touch point, in order to receive Unit, module or the chip of described information can carry out subsequent operation according to the information of touch point.
In the utility model embodiment, touch chip drives passage output drive signals to the whole of touch-screen, then only The induced signal of the part induction channels output of touch-screen is received, the touch on touch-screen is detected further according to these induced signals Point so that touch chip to touch-screen without carrying out full screen scanning, so as to effectively shorten the detection of the touch point on touch screen Time, and then improve the report point rate of touch-screen and the power consumption of reduction touch chip.
Alternatively, as one embodiment, K=N/2, any two induction channels are non-conterminous in the K induction channels.
Alternatively, as one embodiment, the processing unit detects i-th of driving in the M driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable in the present scanning cycle The introversive M driving passage output drive signal, i is the positive integer less than or equal to M.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to m-th driving passage output driving During signal, the induced signal of N-K output in N number of induction channels in addition to the K induction channels.
Correspondingly, the processing unit is additionally operable to drive passage output driving to the m-th according to the drive circuit During signal, the induced signal for the N-K induction channels output that the sensor circuit is received detects touching on the touch-screen Touch a little.
Alternatively, as one embodiment, the drive circuit is additionally operable within next scan period drive to described M Dynamic passage output drive signal.
Correspondingly, the sensor circuit is additionally operable to receive each drive of the drive circuit into described M driving passage N-K induction channels output during dynamic passage output drive signal, in N number of induction channels in addition to the K induction channels Induced signal.
Correspondingly, the processing unit is additionally operable to described M driving passage output driving be believed according to the drive circuit Number when, the induced signal for the N-K induction channels output that the sensor circuit is received, the touch on the detection touch-screen Point.
Alternatively, as one embodiment, the processing unit detects j-th of driving in the M driving passage Passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit was additionally operable in next scanning week To described M driving passage output drive signal in phase, j is the positive integer less than or equal to M-S.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to m-th driving passage output driving During signal, the K induction channels output induced signal.
Correspondingly, the processing unit is additionally operable to drive passage output driving to described j-th according to the drive circuit During signal, the induced signal for the K induction channels output that the sensor circuit is received, the touch on the detection touch-screen Point.
Alternatively, as one embodiment, the sensor circuit is additionally operable to logical to described M driving in the drive circuit During road output drive signal, alternating, which is received, removes the K induction channels in the K induction channels and N number of induction channels The induced signal of outer N-K induction channels output.
Correspondingly, the processing unit is additionally operable to drive passage output driving to described M according in the drive circuit During signal, the sensor circuit replaces the K induction channels received and the sensing of N-K induction channels output is believed Number, detect the touch point on the touch-screen.
It should be understood that above and other operation of the unit of the touch chip of the utility model embodiment shown in Figure 13 And/or function is respectively in order to realize the corresponding flow for touching point methods for detecting touch-screen in Fig. 5, for sake of simplicity, herein not Repeat again.
Figure 14 is the schematic block diagram of the touch chip 1400 of the utility model one embodiment.Touch chip 1400 includes Drive circuit 1410, processing unit 1420, sensor circuit 1430 and output interface 1440.
Drive circuit 1410, for driving passage output drive signal, institute to S of touch-screen in present scanning cycle Stating touch-screen has M driving passage, and M is positive integer, and S is the positive integer less than M.
Sensor circuit 1430, is exported for each driving passage when the drive circuit into described S driving passage During drive signal, the induced signal of the K induction channels output of the touch-screen is received, the touch-screen there are N number of induction channels, N is positive integer, and K is the positive integer less than N.
Processing unit 1420, for according to the drive circuit to described S driving passage output drive signal when, it is described The induced signal for the K induction channels output that sensor circuit is received, detects the touch point on the touch-screen.
Drive circuit 1410 is additionally operable within next scan period into M driving passage of touch-screen except the S Drive M-S driving passage output drive signal outside passage.
Each driving passage that sensor circuit 1430 is additionally operable to when the drive circuit into described M-S driving passage is defeated When going out drive signal, the induced signal of the N-K induction channels output of the touch-screen is received.
Processing unit 1420 be additionally operable to according to the drive circuit to described M-S driving passage output drive signal when, The induced signal for the N-K induction channels output that the sensor circuit is received, detects the touch point on the touch-screen.
Output interface 1440 is used for the information for exporting the touch point, the positional information of such as touch point, in order to receive Unit, module or the chip of described information can carry out subsequent operation according to the information of touch point.
In the utility model embodiment, part driving of the touch chip every time only into all driving passages of touch-screen is logical The induced signal of road output drive signal, also a receiving portion induction channels output, then drives to another part next time Passage output drive signal, receives the induced signal of another part induction channels output.When this not having touch point on touch-screen, Detection time can be shortened and detection power consumption is reduced, and when having touch point on touch-screen, again will not missing inspection touch point.
Alternatively, as one embodiment, S=M/2, K=N/2, the described S any two driving driven in passage are logical Road is non-conterminous, and any two induction channels in the K induction channels are non-conterminous.
Alternatively, as one embodiment, the processing unit detects i-th of driving in the S driving passage Passage is on the touch-screen during corresponding position Shang You touch points, and the drive circuit is additionally operable in the present scanning cycle Believe in the M driving passage of the introversive touch-screen with the described i-th adjacent driving passage output driving of driving passage Number, i is the positive integer less than or equal to S.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to the adjacent drive of described i-th driving passage During dynamic passage output drive signal, the sensing of the K induction channels of the touch-screen and N-K induction channels output Signal.
Correspondingly, the drive circuit is additionally operable to described i-th driving passage again output drive signal.
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit and exported again to described i-th driving passage During drive signal, the N-K induction channels output induced signal.
Correspondingly, the processing unit is additionally operable to drive the adjacent drive of passage to described i-th according to the drive circuit During dynamic passage output drive signal, the K induction channels that the sensor circuit is received and the N-K induction channels export Induced signal, and according to the drive circuit to described i-th driving passage re-enter drive signal when, the induced electricity The induced signal for the N-K induction channels output that road is received, detects the touch point of the touch-screen.
Alternatively, as one embodiment, the processing unit detects j-th of drive in the M-S driving passage Dynamic passage is on the touch-screen during corresponding position Shang You touch points, and the drive circuit is additionally operable in next scanning Export and drive with the described j-th adjacent driving passage of driving passage into the M driving passage of the touch-screen in cycle Dynamic signal, j is the positive integer less than or equal to M-S；
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit to the adjacent drive of described j-th driving passage During dynamic passage output drive signal, the sensing of the N-K induction channels of the touch-screen and K induction channels output Signal.
Correspondingly, the drive circuit is additionally operable to described j-th driving passage again output drive signal；
Correspondingly, the sensor circuit is additionally operable to receive the drive circuit and exported again to described j-th driving passage During drive signal, the induced signal of the K induction channels output.
Correspondingly, the processing unit is additionally operable to drive the adjacent drive of passage to described j-th according to the drive circuit During dynamic passage output drive signal, the N-K induction channels that the sensor circuit is received and the K induction channels export Induced signal, and according to the drive circuit to described j-th driving passage re-enter drive signal when, the induced electricity The induced signal for the K induction channels output that road is received, detects the touch point of the touch-screen.
It should be understood that above and other operation of the unit of the touch chip of the utility model embodiment shown in Figure 14 And/or function is respectively in order to realize the corresponding flow for touching point methods for detecting touch-screen in Fig. 8, for sake of simplicity, herein not Repeat again.
Figure 15 is the schematic block diagram of the touch apparatus 1500 of the utility model one embodiment.Touch chip 1500 includes Touch-screen 1510 and touch chip 1520.
Touch-screen 1510 includes driving passage and induction channels, and the driving passage is used for the drive for receiving the touch chip The drive signal of dynamic circuit output, the induction channels are used for the coupled signal for sensing the drive signal on the driving passage, And the sensor circuit using the coupled signal as induced signal to the touch chip is exported.
Touch chip 1520 can be the touch-control core shown in touch chip 1200 or Figure 13 described in Figure 12 Piece 1300, can also be the touch chip 1400 shown in Figure 14.For sake of simplicity, here is omitted.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed Scope of the present utility model.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
, can be with several embodiments provided herein, it should be understood that disclosed systems, devices and methods Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.
In addition, each functional unit in the utility model each embodiment can be integrated in a processing unit, Can be that unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized using in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on it is such understand, the technical solution of the utility model substantially or Person says that the part of the part contributed to prior art or the technical scheme can be embodied in the form of software product, The computer software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be with It is personal computer, server, or network equipment etc.) perform whole or the portion of the utility model each embodiment methods described Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), with Machine access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with Jie of store program codes Matter.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right The protection domain asked is defined.

Claims (11)

1. a kind of touch chip, it is characterised in that including：
Drive circuit, is used for：In present scanning cycle, passage output drive signal, the touch are driven to S of touch-screen Screen has M driving passage, and M is positive integer, and S is the positive integer less than M；
Sensor circuit, is used for：When each driving passage output drive signal of the drive circuit into described S driving passage When, the induced signal of N number of induction channels output of the touch-screen is received, N is positive integer；
Processing unit, is used for：During according to the drive circuit to described S driving passage output drive signal, the induced electricity The induced signal for N number of induction channels output that road is received, detects the touch point on the touch-screen；
Output interface, is used for：Export the information of the touch point.
2. any two in touch chip according to claim 1, it is characterised in that S=M/2, the S driving passage Drive passage non-conterminous.
3. touch chip according to claim 2, it is characterised in that when the processing unit detects the S driving I-th in passage driving passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable to At least one driving adjacent with described i-th driving passage into described M driving passage in the present scanning cycle Passage output drive signal, i is the positive integer less than or equal to S；
Wherein, the sensor circuit is additionally operable to receive the drive circuit to the adjacent driving passage of described i-th driving passage During output drive signal, the induced signal of N number of induction channels output；
The processing unit is additionally operable to：Exported according to the drive circuit to the described i-th adjacent driving passage of driving passage During drive signal, the induced signal for N number of induction channels output that the sensor circuit is received is detected on the touch-screen Touch point.
4. the touch chip according to Claims 2 or 3, it is characterised in that the drive circuit is additionally operable in lower one scan M-S driving passage output drive signal in cycle into described M driving passage in addition to described S drives passage；
Each driving passage that the sensor circuit is additionally operable to when the drive circuit into described M-S driving passage, which is exported, to be driven During dynamic signal, the induced signal of N number of induction channels output is received；
It is described when the processing unit is additionally operable to according to the drive circuit to described M-S driving passage output drive signal The induced signal for N number of induction channels output that sensor circuit is received, detects the touch point on the touch-screen.
5. touch chip according to claim 4, it is characterised in that when the processing unit detects the M-S drive J-th of driving passage in dynamic passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is also used In within next scan period into described M driving passage with described j-th adjacent at least one of driving passage Passage output drive signal is driven, j is the positive integer less than or equal to M-S；
The sensor circuit is additionally operable to work as the drive circuit to the adjacent driving passage output driving of described j-th driving passage During signal, the induced signal of N number of induction channels output is received；
The processing unit is additionally operable to be exported to the described j-th adjacent driving passage of driving passage according to the drive circuit and driven During dynamic signal, the induced signal for N number of induction channels output that the sensor circuit is received, detect touching on the touch-screen Touch a little.
6. a kind of touch chip, it is characterised in that including：
Drive circuit, is used for：In present scanning cycle, passage output drive signal is driven to M of touch-screen, M is just whole Number；
Sensor circuit, is used for：When each driving passage output drive signal of the drive circuit into described M driving passage When, the induced signal of the K induction channels output of the touch-screen is received, the touch-screen there are N number of induction channels, and N is just whole Number, K is the positive integer less than N；
Processing unit, is used for：During according to the drive circuit to described M driving passage output drive signal, the induced electricity The induced signal for the K induction channels output that road is received, detects the touch point on the touch-screen；
Output interface, is used for：Export the information of the touch point.
7. any two in touch chip according to claim 6, it is characterised in that K=N/2, the K induction channels Induction channels are non-conterminous.
8. touch chip according to claim 7, it is characterised in that when the processing unit detects the M driving I-th in passage driving passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable to In the present scanning cycle passage is driven into described i-th driving passage and the M driving passage with described i-th Adjacent driving passage output drive signal, i is the positive integer less than or equal to M；
Wherein, the sensor circuit is additionally operable to when the drive circuit is logical to described i-th driving passage and i-th of driving During the adjacent driving passage output drive signal in road, the N-K in addition to the K induction channels in N number of induction channels is received The induced signal of individual output；
The processing unit is additionally operable to：Passage is driven to described i-th driving passage and described i-th according to the drive circuit During adjacent driving passage output drive signal, the sensing for the N-K induction channels output that the sensor circuit is received is believed Number, detect the touch point on the touch-screen.
9. the touch chip according to claim 7 or 8, it is characterised in that the drive circuit is additionally operable to sweep next Retouch in the cycle to described M driving passage output drive signal；
The sensor circuit is additionally operable to each driving passage output driving into described M driving passage when the drive circuit During signal, the induced signal of the N-K induction channels output in N number of induction channels in addition to the K induction channels is received；
When the processing unit is additionally operable to according to the drive circuit to described M driving passage output drive signal, the sense The induced signal that the N-K induction channels for answering circuit to receive are exported, detects the touch point on the touch-screen.
10. touch chip according to claim 9, it is characterised in that when the processing unit detects the M driving J-th in passage driving passage is when on the touch-screen there is touch point in corresponding position, and the drive circuit is additionally operable to It is logical with described j-th driving into described j-th driving passage and the M driving passage within next scan period The adjacent driving passage output drive signal in road, j is the positive integer less than or equal to M；
The sensor circuit is additionally operable to receive the drive circuit to described j-th driving passage and j-th of driving passage During adjacent driving passage output drive signal, the induced signal that the K induction channels are exported；
The processing unit is additionally operable to drive passage to described j-th driving passage and described j-th according to the drive circuit During adjacent driving passage output drive signal, the induced signal that the K induction channels that the sensor circuit is received are exported, Detect the touch point on the touch-screen.
11. a kind of touch apparatus, it is characterised in that including any one of touch-screen and claim 1 to claim 10 Touch chip；
The touch-screen includes driving passage and induction channels, and the driving passage is used for the driving electricity for receiving the touch chip The drive signal of road output, the induction channels are used for the coupled signal for sensing the drive signal on the driving passage, and will The coupled signal is exported as induced signal to the sensor circuit of the touch chip.
CN201621085658.8U 2016-09-28 2016-09-28 Touch chip and touch apparatus Active CN206479968U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414858A (en) * 2018-03-01 2018-08-17 昆山国显光电有限公司 Determine the method for faulty channel, the method and system of abort situation and touch screen
CN108700963A (en) * 2017-12-12 2018-10-23 深圳市汇顶科技股份有限公司 Touch chip, touch detecting method and device and terminal device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108700963A (en) * 2017-12-12 2018-10-23 深圳市汇顶科技股份有限公司 Touch chip, touch detecting method and device and terminal device
US10831310B2 (en) 2017-12-12 2020-11-10 Shenzhen GOODIX Technology Co., Ltd. Touch detection method with improved detection speed, touch control chip and touch detection apparatus
CN108700963B (en) * 2017-12-12 2021-07-02 深圳市汇顶科技股份有限公司 Touch chip, touch detection method and device and terminal equipment
CN108414858A (en) * 2018-03-01 2018-08-17 昆山国显光电有限公司 Determine the method for faulty channel, the method and system of abort situation and touch screen

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