CN103294292B - The touch detecting method of a kind of capacitive touch screen and capacitive touch screen - Google Patents
The touch detecting method of a kind of capacitive touch screen and capacitive touch screen Download PDFInfo
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- CN103294292B CN103294292B CN201210085878.0A CN201210085878A CN103294292B CN 103294292 B CN103294292 B CN 103294292B CN 201210085878 A CN201210085878 A CN 201210085878A CN 103294292 B CN103294292 B CN 103294292B
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Abstract
The invention discloses the touch detecting method of a kind of capacitive touch screen, including the fine scanning electrode of touch screen being scanned operation and the multiple row induction electrode of touch screen being read, the described fine scanning electrode to touch screen is scanned operating process and is, at least two adjacent row scan electrodes being divided into one scan electrode group and is scanned operation by group, adjacent scan electrode group shares at least a line scan electrode；The described multiple row induction electrode to touch screen is read process and is, at least two adjacent row induction electrodes are divided into an induction electrode group and are read by group, and adjacent induction electrode group shares at least string induction electrode.Be to one group of scan electrode input scanning signal during input scanning signal, be to read the induced signal that one group of induction electrode produces when reading induced signal, the intensity of induced signal adds, it is to avoid the problem that and that cause detection too small due to induced signal is failed.
Description
Technical field
The invention belongs to field of human-computer interaction, particularly relate to touch detecting method and the condenser type of a kind of capacitive touch screen
Touch screen.
Background technology
Touch screen inputs medium as one, is presently the most man-machine interaction mode simple, convenient, a kind of.Cause
This, touch screen is more and more applied in various electronic product, such as mobile phone, notebook computer, MP3/MP4 etc..For reducing
The cost of various electronic equipments, makes various electronic equipment more frivolous, and usual touch screen is integrated in display panels.According to work
Making principle and the difference of detection touch information medium, touch screen can be divided into resistance-type, condenser type, infrared-type and surface acoustic wave
Four types.Capacitance-type touch screen technology is owing to technique is simple, life of product length, light transmittance high become current main flow
Touch screen technology.
As shown in Figure 1, Figure 2 and Figure 3, existing a kind of capacitive touch screen includes: glass substrate 10, is arranged on described glass
Driving layer 11 on glass substrate 10 surface, is arranged on the insulating medium layer 12 on described driving layer 11 surface, be arranged on described absolutely
Inductive layer 13 on edge dielectric layer 12 surface, and it is arranged on the protective layer 14 on described inductive layer 13 surface.Described driving layer
11 include a plurality of scan electrode 11a, 11b, 11c, 11d...... being parallel to each other, and every scan electrode is by many height scanning electricity
Pole 111 is in series, and every sub-scan electrode 111 is brilliant, and the plurality of sub-scan electrode 111 is regularly arranged at described glass
On glass substrate 10 surface.Described inductive layer 13 includes a plurality of induction electrode 13a, 13b, 13c, 13d...... being parallel to each other, often
Bar induction electrode is in series by many sub-induction electrodes 131, and every sub-induction electrode 131 is brilliant, the plurality of sub-sense
Answer electrode 131 regularly arranged on described insulating medium layer 12 surface.Described scan electrode 11a, 11b, 11c, 11d...... with
Described induction electrode 13a, 13b, 13c, 13d...... are orthogonal, and every induction electrode by gating switch module 20 with
Testing circuit electrically connects.
Forming mutual capacitance between sub-induction electrode 131 and sub-scan electrode 111, testing circuit touches by measuring finger touching
Touch the change of mutual capacitance caused by screen, it is thus achieved that finger touches the particular location of touch screen.
Its operation principle particularly as follows: as a example by scan electrode 11a, scan electrode 11a is applied with driving voltage 40, other
Scan electrode 11b, 11c, 11d...... ground connection, induction electrode 13a is connected with testing circuit 30, now by gating switch 20
Detection is scan electrode 11a and induction electrode 13a, and finger touches the point of intersection in this two lines, has induced signal, then
The most successively induction electrode 13b, 13c, 13d...... are connected with testing circuit 30 by gating switch module 20, now detect
Scan electrode 11a and the signal of induction electrode 13b, 13c, 13d...... point of intersection；Afterwards, to scan electrode 11b, 11c,
11d...... applies driving voltage successively, drives scan electrode 11b, 11c, 11d...... to complete driving process, so successively
Complete all scan electrode 11a, 11b, 11c, 11d...... are handed over all induction electrode 13a, 13b, 13c, 13d......
The driving of point.
But, the induced signal of existing capacitive touch screen is typically small, easily causes and detects unsuccessfully.
Summary of the invention
In view of this, it is an object of the invention to provide touch detecting method and the capacitive touch of a kind of capacitive touch screen
Touch screen, typically small to solve the induced signal of existing capacitive touch screen, easily cause the problem that detection is failed.
The touch detecting method of this capacitive touch screen, including:
The fine scanning electrode of touch screen is scanned operation and the multiple row induction electrode to touch screen is read out behaviour
Make；
The described fine scanning electrode to touch screen is scanned operating process and is, by least two adjacent row scan electrodes
Being divided into one scan electrode group and be scanned operation by group, adjacent scan electrode group shares at least a line scan electrode；
The described multiple row induction electrode to touch screen is read process and is, by least two adjacent row induction electrodes
Being divided into an induction electrode group and be read by group, adjacent induction electrode group shares at least string induction electrode.
Preferably, all each induction electrode group is read out by group after each scan electrode group being scanned operation behaviour
Make.
Preferably, all each induction electrode group is read out by group after each scan electrode group being scanned operation behaviour
After work, also include:
The induced signal read is screened, obtains maximum induced signal, described maximum induced signal determine tactile
Touching the lateral attitude in region, the scanning signal corresponding with described maximum induced signal determines the lengthwise position of touch area, then depend on
Touch area is determined according to described maximum induced signal and the scanning signal corresponding with described maximum induced signal.
Preferably, a scan electrode group includes adjacent M row scan electrode, and adjacent scan electrode group shares the scanning of N row
Electrode, wherein 1≤N≤M-1, described M, N are positive integer, and M >=2.
Preferably, an induction electrode group includes adjacent P row induction electrode, and adjacent induction electrode group shares Q row sensing
Electrode, wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2.
Preferably, described M with P is equal.
Preferably, described M=P=2 or 3 or 4 or 5 or 6.
Preferably, described N=M-1.
Preferably, described Q=P-1.
A kind of capacitive touch screen, including:
Touch sensible electrod-array, described touch sensible electrod-array includes fine scanning electrode and multiple row induction electrode；
Scan drive circuit, described scan drive circuit is scanned operation to the fine scanning electrode of described touch screen；
Touch detection circuit, the multiple row induction electrode of described touch screen is read by described touch detection circuit；
Wherein, described scan drive circuit is scanned the mode of operation and is the fine scanning electrode of described touch screen,
At least two adjacent row scan electrodes being divided into one scan electrode group and is scanned operation by group, adjacent scan electrode group shares
At least a line scan electrode；
The mode that the multiple row induction electrode of described touch screen is read by described touch detection circuit is, by adjacent
At least two row induction electrodes be divided into an induction electrode group and be read by group, adjacent induction electrode group share at least one
Row induction electrode.
Preferably, described fine scanning electrode is arranged in order in the first direction, and described multiple row induction electrode is in the first direction
Extend and be also arranged in order in a second direction, and described first direction and second direction substantially vertical.
Preferably, described capacitive touch screen also includes that a substrate, described fine scanning electrode and multiple row induction electrode set
Put on the substrate, described fine scanning electrode and multiple row induction electrode is arranged in a crossed manner and infall be provided with make described in sweep
Retouch electrode and the insulating barrier of induction electrode electric insulation.
Preferably, described fine scanning electrode and multiple row induction electrode are arranged on a substrate, and described fine scanning electricity
Pole and multiple row induction electrode are arranged on same layer.
Preferably, scan electrode described in every a line includes many sub-scan electrodes, and the son scanning electricity of fine scanning electrode
Pole forms scan electrode row in a first direction, arranges induction electrode described between each two scan electrode row.
Preferably, after described scan drive circuit is scanned operation to a scan electrode group, described touch detects electricity
Each induction electrode group is read by road by group.
Preferably, all to each induction electrode after described scan drive circuit is scanned operation to each scan electrode group
After group is read by group, also include:
The induced signal read is screened, obtains maximum induced signal, described maximum induced signal determine tactile
Touching the lateral attitude in region, the scanning signal corresponding with described maximum induced signal determines the lengthwise position of touch area, then depend on
Touch area is determined according to described maximum induced signal and the scanning signal corresponding with described maximum induced signal.
Preferably, a scan electrode group includes adjacent M row scan electrode, and adjacent scan electrode group shares the scanning of N row
Electrode, wherein 1≤N≤M-1, described M, N are positive integer, and M >=2.
Preferably, an induction electrode group includes adjacent P row induction electrode, and adjacent induction electrode group shares Q row sensing
Electrode；Wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2.
Preferably, described M with P is equal.
Preferably, described M=P=2 or 3 or 4 or 5 or 6.
Preferably, described N=M-1.
Preferably, described Q=P-1.
Visible, the touch detecting method of capacitive touch screen disclosed in this invention, due to the fine scanning to touch screen
Electrode is scanned operating process, and at least two adjacent row scan electrodes are divided into one scan electrode group and are scanned by group
Operation, adjacent scan electrode group shares at least a line scan electrode；The described multiple row induction electrode to touch screen is read out behaviour
It is that at least two adjacent row induction electrodes are divided into an induction electrode group and are read by group as process, adjacent sensing
Electrode group shares at least string induction electrode.So, it is to one group of scan electrode input scanning signal, phase during input scanning signal
Answering, be to read the induced signal that one group of induction electrode produces when reading induced signal, the induced signal i.e. read is one group
The superposition of the induced signal that a plurality of induction electrode is long-living in induction electrode, so compared to prior art, the intensity of induced signal
Add, it is to avoid the problem that and that cause detection too small due to induced signal is failed.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
Fig. 1 is the cross-sectional view of prior art capacitive touch screen；
Fig. 2 is the structural representation that prior art capacitive touch screen drives layer；
Fig. 3 is the structural representation of prior art capacitive touch screen inductive layer；
Fig. 4 is the schematic diagram of detection method of capacitance-type touch screen disclosed in this invention；
Fig. 5 is the structural representation of a kind of capacitive touch screen disclosed in this invention；
Fig. 6 is the structural representation of another kind of capacitive touch screen disclosed in this invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
As described in background, the induced signal of existing capacitive touch screen is typically small, easily causes detection and loses
The problem lost.
Inventor it has been investigated that, the touch detecting method of existing capacitive touch screen generally scanning electricity to wall scroll
Pole is scanned operation and is read the induction electrode of wall scroll, for having bigger scan electrode and induction electrode
Capacitive touch screen, utilize this kind of method to carry out detection and what problem can't occur, but bigger scan electrode and sense
Answer electrode can cause the reduction of accuracy of detection, but, when accuracy of detection is higher, corresponding scan electrode and induction electrode are less,
Now, the induced signal being read reading to the induction electrode of wall scroll is less, easily causes the phenomenon that detection is failed.
The invention discloses the touch detecting method of a kind of capacitive touch screen, the method includes:
The fine scanning electrode of touch screen is scanned operation and the multiple row induction electrode to touch screen is read out behaviour
Making, the described fine scanning electrode to touch screen is scanned operating process and is, is divided into by least two adjacent row scan electrodes
One scan electrode group is also scanned operation by group, and adjacent scan electrode group shares at least a line scan electrode；
The described multiple row induction electrode to touch screen is read process and is, by least two adjacent row induction electrodes
Being divided into an induction electrode group and be read by group, adjacent induction electrode group shares at least string induction electrode.
As can be seen from the above scheme, it is to one group of scan electrode input scanning signal during input scanning signal, accordingly,
Being to read the induced signal that one group of induction electrode produces when reading induced signal, the induced signal i.e. read is one group of faradism
The superposition of the induced signal that a plurality of induction electrode is long-living in extremely, so compared to prior art, the intensity of induced signal adds,
Avoid the failed problem of detection that is too small due to induced signal and that cause.
It is above the core concept of the application, below in conjunction with the accompanying drawing in the embodiment of the present invention, to the embodiment of the present invention
In technical scheme be clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under dynamic premise, broadly falls into the scope of protection of the invention.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but the present invention is all right
Using other to be different from alternate manner described here to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
The embodiment of the invention discloses the touch detecting method of a kind of capacitive touch screen, sweep including to the multirow of touch screen
Retouch electrode be scanned operation and the multiple row induction electrode of touch screen is read.
The described fine scanning electrode to touch screen is scanned operating process and is, by least two adjacent row scan electrodes
Being divided into one scan electrode group and be scanned operation by group, adjacent scan electrode group shares at least a line scan electrode；
The described multiple row induction electrode to touch screen is read process and is, by least two adjacent row induction electrodes
Being divided into an induction electrode group and be read by group, adjacent induction electrode group shares at least string induction electrode.
Concrete, a scan electrode group includes adjacent M row scan electrode, and adjacent scan electrode group shares the scanning of N row
Electrode, wherein 1≤N≤M-1, described M, N are positive integer, and M >=2, and the scan electrode that i.e. adjacent scan electrode group shares is 1 row
Or 2 row or 3 row or ... (M-1) OK, as shown in Figure 4, such as, M=3, the scan electrode that adjacent scan electrode group shares is N
=(M-1) is OK, then adjacent scan electrode group shares adjacent 2 row scan electrodes, if the 1st, the 2nd, the 3rd row scan electrode is
One scan electrode group Z1, the 2nd, the 3rd, the 4th row scan electrode be second scan electrode group adjacent with the first scan electrode group Z1
Z2, then the first scan electrode group Z1 and the second scan electrode group Z2 share the 2nd, the 3rd row scan electrode, and owing to sweeping
To carry out by group the when of retouching operation, thus share scan electrode operationally between on be differentiated, i.e. shared is swept
Retouching electrode and scan electrode group corresponding thereto works simultaneously, the first scan electrode group Z1 work (is i.e. applied in turntable driving
Signal) time, the 2nd, the 3rd row scan electrode work；During the second scan electrode group Z2 work (being i.e. applied in scanning drive signal), the
2, the 3rd row scan electrode also works；But the 2nd, the 3rd twice work of row scan electrode is separate in time.
Furthermore, it is necessary to explanation, the scan operation process described in the present embodiment, adjacent M row scan electrode is one scan
Electrode group, during a scan operation, M=3, then, during next scan operation, can be M=4, i.e. whole
During touching detection, during each scan operation, the value of M can be equal (sweeping of being comprised of the most each scan electrode group
Retouch electrode strip number the most identical), it is also possible to it is unequal, only need to meet M >=2, share in adjacent scan electrode group
In scan electrode, the N row scan electrode that two the most adjacent scan electrode group share, during whole touch detection, each
During scan operation, the value of N can be equal (the scan electrode bar number that the scan electrode group that i.e. each two is adjacent is shared
The most identical), it is also possible to it is unequal, it is only necessary to meeting 1≤N≤M-1, N in this range can be according to concrete feelings
Condition changes.
Such as, the 1st, the 2nd, the 3rd, the 4th row scan electrode is that the first scan electrode group Z1 (includes 4 row scan electrodes, M=
4), the 2nd, the 3rd, the 4th, the 5th, the 6th row scan electrode is the second scan electrode group Z2 (bag adjacent with the first scan electrode group Z1
Include 5 row scan electrodes, M=5), the first scan electrode group Z1 and the second scan electrode group Z2 share 3 row scan electrodes (N=3),
I.e. share the 2nd, the 3rd, the 4th row scan electrode；
If the 4th, the 5th, the 6th, the 7th row scan electrode be threeth scan electrode group Z3 adjacent with the second scan electrode group Z2
(including 4 row scan electrodes, M=4), the second scan electrode group Z2 and the 3rd scan electrode group Z3 can share 3 row scan electrodes
(N=3), i.e. share the 4th, the 5th, the 6th row scan electrode；
If the 3rd, the 4th, the 5th, the 6th, the 7th row scan electrode be threeth scan electrode adjacent with the second scan electrode group Z2
Group Z3 (including 5 row scan electrodes, M=5), the second scan electrode group Z2 and the 3rd scan electrode group Z3 can share 4 row scannings
Electrode (N=4), i.e. share the 3rd, the 4th, the 5th, the 6th row scan electrode；
The like, repeat no more.
Concrete, an induction electrode group includes adjacent P row induction electrode, and adjacent induction electrode group shares Q row sensing
Electrode, wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2, and the induction electrode that the most adjacent induction electrode group shares is 1 row
2 row or 3 row ... (P-1) arrange, such as, as shown in Figure 4, P=3, adjacent induction electrode group share induction electrode be Q=
(P-1) row, then adjacent induction electrode group shares adjacent 2 row induction electrodes, if the 1st, the 2nd, the 3rd row induction electrode be first
Induction electrode group Z11, the 2nd, the 3rd, the 4th row induction electrode be the second induction electrode group adjacent with the first induction electrode group Z11
Z12, then the first induction electrode group Z11 and the second induction electrode group Z12 share the 2nd, the 3rd row induction electrode, and owing to entering
To carry out by group the when of row read operation, thus share induction electrode operationally between on be differentiated, i.e. to share
Induction electrode and induction electrode group corresponding thereto work simultaneously, the first induction electrode group Z11 work (is i.e. read touch
Induced signal) time, the 2nd, the 3rd row induction electrode work；Second induction electrode group Z12 work (being i.e. read touch sensible signal)
Time, the 2nd, the 3rd row induction electrode also works；But the 2nd, the 3rd twice work of row induction electrode is separate in time.
Furthermore, it is necessary to explanation, the read operation process described in the present embodiment, adjacent P row induction electrode is a sensing
Electrode group, during a read operation, P=3, then, during next read operation, can be P=4, i.e. whole
During touching detection, during each read operation, the value of P can be the equal (sense that the most each induction electrode group is comprised
Answer the electrode strip number the most identical), it is also possible to it is unequal, only need to meet P >=2, shared in adjacent induction electrode group
In induction electrode, the Q row induction electrode that two the most adjacent induction electrode groups share, during whole touch detection, each
During read operation, the value of Q can be equal (the induction electrode bar number that the induction electrode group that i.e. each two is adjacent is shared
The most identical), it is also possible to it is unequal, it is only necessary to meeting 1≤Q≤P-1, Q in this range can be according to concrete feelings
Condition changes.
Such as, the 1st, the 2nd, the 3rd, the 4th row induction electrode is that the first induction electrode group Z11 (includes 4 row induction electrodes, P=
4), the 2nd, the 3rd, the 4th, the 5th, the 6th row induction electrode is second induction electrode group Z12 adjacent with the first induction electrode group Z11
(including 5 row induction electrodes, P=5), the first induction electrode group Z11 and the second induction electrode group Z12 share 3 row induction electrode (Q
=3), i.e. share the 2nd, the 3rd, the 4th row induction electrode；
If the 4th, the 5th, the 6th, the 7th row induction electrode be the threeth induction electrode group adjacent with the second induction electrode group Z12
Z13 (includes 4 row induction electrodes, P=4), and the second induction electrode group Z12 and the 3rd induction electrode group Z13 can share 3 row sensings
Electrode (Q=3), i.e. share the 4th, the 5th, the 6th row induction electrode；
If the 3rd, the 4th, the 5th, the 6th, the 7th row induction electrode be threeth faradism adjacent with the second induction electrode group Z12
Pole group Z13 (includes 5 row induction electrodes, P=5), and the second induction electrode group Z12 and the 3rd induction electrode group Z13 can share 4 row
Induction electrode (Q=4), i.e. share the 3rd, the 4th, the 5th, the 6th row induction electrode；
The like, repeat no more.
In the ordinary course of things, described M with P is equal, but if practical situation has particular/special requirement, described M and P can not also
Equal, i.e. the relation of M with P sets as the case may be, when M with P is equal, for M and P of general capacitive touch screen
Value is M=P=2 or 3 or 4 or 5 or 6, requires higher capacitive touch screen for accuracy of detection, and the value of M Yu P can be more
Greatly, this kind of situation is again it is to be understood that when the value of M Yu P is bigger, can increase the accuracy of detection of capacitive touch screen.
When detection, all each induction electrode group is read out by group after each scan electrode group is scanned operation
Operation, such as, is first scanned operation, other scan electrode ground connection, the first induction electrode to above-mentioned first scan electrode group
Group is connected with testing circuit by gating switch, is read the first induction electrode group, and now detect is first to sweep
Retouch electrode group and the first induction electrode group overlaps the signal at place, then by gating switch module the most successively by the second induction electrode
Group, the 3rd induction electrode group, the 4th induction electrode group ... be connected with testing circuit, successively to the second induction electrode group,
Three induction electrode groups, the 4th induction electrode group ... be read, now detect the first scan electrode group and the first sense
Answer electrode group, the second induction electrode group, the 3rd induction electrode group ... the signal at overlapping place；Afterwards, to the second scan electrode
Group, the 3rd scan electrode group, the 4th scan electrode group ... successively apply scanning signal, successively to the second scan electrode group,
3rd scan electrode group, the 4th scan electrode group ... be scanned operation, complete detection process.
Finger touches in this scan electrode electrode and the intersection of induction electrode, has induced signal, due to described touch
Formula capacitance plate is the detection carried out in units of group, so several groups of induction electrodes all can have sensing near finger touch area
The generation of signal, so being all read out behaviour by group to each induction electrode group after each scan electrode group is scanned operation
After work, also include:
The induced signal read is screened, obtains maximum induced signal, touched from described touch screen by finger
The induced signal maximum near some place, the induced signal in region subtracts from the distance of described touch screen successively along with finger about
Little, so, position determined by the induction electrode group of the maximum induced signal of generation and corresponding scan electrode group is finger
The physical location touched, and owing to described maximum induced signal determines the lateral attitude of touch area, with described maximum sensing
The scanning signal that signal is corresponding determines the lengthwise position of touch area, then according to described maximum induced signal and feel with described maximum
The scanning signal that induction signal is corresponding determines touch area.
Another embodiment of the present invention discloses a kind of capacitive touch screen, as it is shown in figure 5, include:
Touch sensible electrod-array, described touch sensible electrod-array includes: fine scanning electrode 101a, 101b,
101c...... and multiple row induction electrode 102a, 102b, 102c.......
Described touch capacitance plate also includes a substrate 100, described fine scanning electrode 101a, 101b, 101c......
Be arranged on a substrate 100 with multiple row induction electrode 102a, 102b, 102c......, and described scan electrode 101a, 101b,
101c...... and multiple row induction electrode 102a, 102b, 102c...... is arranged in a crossed manner, and infall be provided with make described many
Row scan electrode 101a, 101b, 101c...... and the insulation of multiple row induction electrode 102a, 102b, 102c...... electric insulation
Layer (not shown), described fine scanning electrode 101a, 101b, 101c...... are arranged in order in the first direction, described many
Row induction electrode 102a, 102b, 102c...... extend in a first direction, and are arranged in order in a second direction, and described first
Direction and second direction are substantially vertical.
Although it should be noted that in Fig. 5, scan electrode and sensing signal are drawn as strip shaped electric poles, but actually scan electrode
Difformity can be designed to according to actual needs with induction electrode, such as can use the scan electrode shown in Fig. 2 and Fig. 3 and
The shape of induction electrode.
Or, as shown in Figure 6, fine scanning electrode 21a, 21b, 21c...... of arranging in the first direction and along second
Multiple row induction electrode 22a, 22b, 22c...... of direction arrangement are arranged on a substrate 20, and described fine scanning electrode
21a, 21b, 21c...... and multiple row induction electrode 22a, 22b, 22c...... are arranged on same layer, first direction and second party
To substantially vertical.Now, scan electrode described in every a line, i.e. scan electrode 21a, 21b, 21c...... include that many height scan
Electrode 21.Arrange along second direction with the sub-scan electrode in a line scan electrode and linked together by peripheral leads,
And the sub-scan electrode 21 of fine scanning electrode 21a, 21b, 21c...... formed in a first direction scan electrode row 23a,
Between 23b, 23c...... each two scan electrode row, an induction electrode is set.Scan electrode row 23a, 23b, 23c...... edge
Second direction arrangement, be parallel to multiple row induction electrode 22a, 22b, 22c.......In the present embodiment, described fine scanning electricity
In the case of pole and multiple row induction electrode are arranged on same layer, the thickness of capacitive touch screen can be reduced so that it is more frivolous,
Convenient.
Described touch capacitance plate also includes:
Scan drive circuit, described scan drive circuit to the fine scanning electrode 101a of described touch screen, 101b,
101c...... is scanned operation；
Touch detection circuit, described touch detection circuit to the multiple row induction electrode 102a of described touch screen, 102b,
102c...... be read；
Wherein, fine scanning electrode 101a, 101b, 101c...... of described touch screen are entered by described scan drive circuit
The mode of row scan operation is, at least two adjacent row scan electrodes is divided into one scan electrode group and is scanned behaviour by group
Making, adjacent scan electrode group shares at least a line scan electrode；
Multiple row induction electrode 102a, 102b, 102c...... of described touch screen are read by described touch detection circuit
The mode of extract operation is, at least two adjacent row induction electrodes are divided into an induction electrode group and are read by group, phase
Adjacent induction electrode group shares at least string induction electrode.
One scan electrode group includes that adjacent M row scan electrode is group, and adjacent scan electrode group shares N row scanning electricity
Pole, wherein 1≤N≤M-1, described M, N are positive integer, and M >=2；One induction electrode group includes adjacent P row induction electrode,
Adjacent induction electrode group shares Q row induction electrode；Wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2.
In the ordinary course of things, described M with P is equal, and M=P=2 or 3 or 4 or 5 or 6.
Concrete, a scan electrode group includes adjacent M row scan electrode, and adjacent scan electrode group shares the scanning of N row
Electrode, wherein 1≤N≤M-1, described M, N are positive integer, and M >=2, and the scan electrode that i.e. adjacent scan electrode group shares is 1 row
Or 2 row or 3 row or ... (M-1) OK, such as, M=3, the scan electrode that adjacent scan electrode group shares be N=(M-1) OK,
So adjacent scan electrode group shares adjacent 2 row scan electrodes, if the 1st, the 2nd, the 3rd row scan electrode be the first scan electrode
Group, the 2nd, the 3rd, the 4th row scan electrode be second scan electrode group adjacent with the first scan electrode group, then the first scan electrode
Group and the second scan electrode group share the 2nd, the 3rd row scan electrode.
Furthermore, it is necessary to explanation, the value of M can be the equal (scan electrode that the most each scan electrode group is comprised
Bar number is the most identical), it is also possible to it is unequal, only need to meet M >=2, at the scanning electricity that adjacent scan electrode group shares
In extremely, the N row scan electrode that two the most adjacent scan electrode group share, the value of N can be that equal (i.e. each two is adjacent
The scan electrode bar number that scan electrode group is shared is the most identical), it is also possible to it is unequal, it is only necessary to meet 1≤N≤M-1 i.e.
Can, N in this range can change according to concrete condition.
Such as, the 1st, the 2nd, the 3rd, the 4th row scan electrode is that the first scan electrode group Z1 (includes 4 row scan electrodes, M=
4), the 2nd, the 3rd, the 4th, the 5th, the 6th row scan electrode is the second scan electrode group Z2 (bag adjacent with the first scan electrode group Z1
Include 5 row scan electrodes, M=5), the first scan electrode group Z1 and the second scan electrode group Z2 share 3 row scan electrodes (N=3),
I.e. share the 2nd, the 3rd, the 4th row scan electrode；
If the 4th, the 5th, the 6th, the 7th row scan electrode be threeth scan electrode group Z3 adjacent with the second scan electrode group Z2
(including 4 row scan electrodes, M=4), the second scan electrode group Z2 and the 3rd scan electrode group Z3 can share 3 row scan electrodes
(N=3), i.e. share the 4th, the 5th, the 6th row scan electrode；
If the 3rd, the 4th, the 5th, the 6th, the 7th row scan electrode be threeth scan electrode adjacent with the second scan electrode group Z2
Group Z3 (including 5 row scan electrodes, M=5), the second scan electrode group Z2 and the 3rd scan electrode group Z3 can share 4 row scannings
Electrode (N=4), i.e. share the 3rd, the 4th, the 5th, the 6th row scan electrode；
The like, repeat no more.
Concrete, an induction electrode group includes adjacent P row induction electrode, and adjacent induction electrode group shares Q row sensing
Electrode, wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2, and the induction electrode that the most adjacent induction electrode group shares is 1 row
2 row or 3 row ... (P-1) arrange, such as, P=3, adjacent induction electrode group share induction electrode be Q=(P-1) row, that
Adjacent induction electrode group shares adjacent 2 row induction electrodes, if the 1st, the 2nd, the 3rd row induction electrode be the first induction electrode
Group, the 2nd, the 3rd, the 4th row induction electrode be the second induction electrode group adjacent with the first induction electrode group, then the first induction electrode
Group and the second induction electrode group share the 2nd, the 3rd row induction electrode, and owing to being to enter by group being read when
OK, thus the induction electrode shared operationally between on be differentiated, i.e. to shared induction electrode and corresponding thereto
Induction electrode group works simultaneously, during the first induction electrode group work (being i.e. read touch sensible signal), and the 2nd, the 3rd row faradism
Pole works；During the second induction electrode group Z12 work (being i.e. read touch sensible signal), the 2nd, the 3rd row induction electrode also works；
But the 2nd, the 3rd twice work of row induction electrode is separate in time.
Furthermore, it is necessary to explanation, adjacent P row induction electrode is an induction electrode group, and the value of P can be equal
(the induction electrode bar number that the most each induction electrode group is comprised is the most identical), it is also possible to be unequal, only need to meet P >=2 i.e.
Can, the Q row induction electrode that two the most adjacent induction electrode groups share, the value of Q can be the equal (sense that i.e. each two is adjacent
The induction electrode bar number answering electrode group to be shared is the most identical), it is also possible to it is unequal, it is only necessary to meet 1≤Q≤P-1,
Q in this range can change according to concrete condition.
Such as, the 1st, the 2nd, the 3rd, the 4th row induction electrode is that the first induction electrode group Z11 (includes 4 row induction electrodes, P=
4), the 2nd, the 3rd, the 4th, the 5th, the 6th row induction electrode is second induction electrode group Z12 adjacent with the first induction electrode group Z11
(including 5 row induction electrodes, P=5), the first induction electrode group Z11 and the second induction electrode group Z12 share 3 row induction electrode (Q
=3), i.e. share the 2nd, the 3rd, the 4th row induction electrode；
If the 4th, the 5th, the 6th, the 7th row induction electrode be the threeth induction electrode group adjacent with the second induction electrode group Z12
Z13 (includes 4 row induction electrodes, P=4), and the second induction electrode group Z12 and the 3rd induction electrode group Z13 can share 3 row sensings
Electrode (Q=3), i.e. share the 4th, the 5th, the 6th row induction electrode；
If the 3rd, the 4th, the 5th, the 6th, the 7th row induction electrode be threeth faradism adjacent with the second induction electrode group Z12
Pole group Z13 (includes 5 row induction electrodes, P=5), and the second induction electrode group Z12 and the 3rd induction electrode group Z13 can share 4 row
Induction electrode (Q=4), i.e. share the 3rd, the 4th, the 5th, the 6th row induction electrode；
The like, repeat no more.
After described scan drive circuit is scanned operation to a scan electrode group, described touch detection circuit is to each
Induction electrode group is read by group.Described scan drive circuit is the most right after each scan electrode group is scanned operation
After each induction electrode group is read by group, also include:
The induced signal read is screened, obtains maximum induced signal, described maximum induced signal determine tactile
Touching the lateral attitude in region, the scanning signal corresponding with described maximum induced signal determines the lengthwise position of touch area, then depend on
Touch area is determined according to described maximum induced signal and the scanning signal corresponding with described maximum induced signal.
It should be noted that all scan electrode group can also be scanned operating by described scan drive circuit, meanwhile,
Each induction electrode group is read by described touch detection circuit by group.Specific works mode is similar with above-mentioned situation,
Do not repeat at this.
In this specification, various piece uses the mode gone forward one by one to describe, and what each some importance illustrated is and other parts
Difference, between various piece, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with principles disclosed herein and features of novelty
The widest scope.
Claims (18)
1. a touch detecting method for capacitive touch screen, including the fine scanning electrode of touch screen is scanned operation and
The multiple row induction electrode of touch screen is read, it is characterised in that:
The described fine scanning electrode to touch screen is scanned operating process and is, is divided into by least two adjacent row scan electrodes
One scan electrode group is also scanned operation by group, and adjacent scan electrode group shares at least a line scan electrode；
The described multiple row induction electrode to touch screen is read process and is, is divided into by least two adjacent row induction electrodes
One induction electrode group is also read by group, and adjacent induction electrode group shares at least string induction electrode；
All each induction electrode group is read by group after each scan electrode group is scanned operation；
After all each induction electrode group being read by group after each scan electrode group is scanned operation, also wrap
Include:
The induced signal read is screened, obtains maximum induced signal, described maximum induced signal determine Petting Area
The lateral attitude in territory, is determined the lengthwise position of touch area, then according to institute by the scanning signal that described maximum induced signal is corresponding
State maximum induced signal and the scanning signal corresponding with described maximum induced signal determines touch area.
Detection method the most according to claim 1 a, it is characterised in that scan electrode group includes adjacent M row scanning electricity
Pole, adjacent scan electrode group shares N row scan electrode, wherein 1≤N≤M-1, and described M, N are positive integer, and M >=2.
Detection method the most according to claim 2, it is characterised in that an induction electrode group includes adjacent P row faradism
Pole, adjacent induction electrode group shares Q row induction electrode, wherein 1≤Q≤P-1, and described P, Q are positive integer, and P >=2.
Detection method the most according to claim 3, it is characterised in that described M with P is equal.
Detection method the most according to claim 4, it is characterised in that described M=P=2 or 3 or 4 or 5 or 6.
Detection method the most according to claim 5, it is characterised in that described N=M-1.
Detection method the most according to claim 5, it is characterised in that described Q=P-1.
8. a capacitive touch screen, it is characterised in that including:
Touch sensible electrod-array, described touch sensible electrod-array includes fine scanning electrode and multiple row induction electrode；
Scan drive circuit, described scan drive circuit is scanned operation to the fine scanning electrode of described touch screen；
Touch detection circuit, the multiple row induction electrode of described touch screen is read by described touch detection circuit；
Wherein, the mode that the fine scanning electrode of described touch screen is scanned operating by described scan drive circuit is, by phase
At least two adjacent row scan electrodes are divided into one scan electrode group and are scanned operation by group, and adjacent scan electrode group shares at least
A line scan electrode；
The mode that the multiple row induction electrode of described touch screen is read by described touch detection circuit is, by adjacent extremely
Few two row induction electrodes are divided into an induction electrode group and are read by group, and adjacent induction electrode group shares at least string sense
Answer electrode；
After described scan drive circuit is scanned operation to a scan electrode group, each is sensed by described touch detection circuit
Electrode group is read by group；
Each induction electrode group is all carried out after each scan electrode group is scanned operation by described scan drive circuit by group
After read operation, also include:
The induced signal read is screened, obtains maximum induced signal, described maximum induced signal determine Petting Area
The lateral attitude in territory, is determined the lengthwise position of touch area, then according to institute by the scanning signal that described maximum induced signal is corresponding
State maximum induced signal and the scanning signal corresponding with described maximum induced signal determines touch area.
Capacitive touch screen the most according to claim 8, it is characterised in that described fine scanning electrode is the most successively
Arrangement, described multiple row induction electrode extends in a first direction and is arranged in order in a second direction, and described first direction and second
Direction is substantially vertical.
Capacitive touch screen the most according to claim 9, it is characterised in that described capacitive touch screen also includes a substrate,
Described fine scanning electrode and multiple row induction electrode are arranged on the substrate, described fine scanning electrode and multiple row induction electrode
Arranged in a crossed manner and be provided with at infall and make described scan electrode and the insulating barrier of induction electrode electric insulation.
11. capacitive touch screens according to claim 9, it is characterised in that described fine scanning electrode and multiple row faradism
Pole is arranged on a substrate, and described fine scanning electrode and multiple row induction electrode are arranged on same layer.
12. according to capacitive touch screen described in claim 11, it is characterised in that scan electrode described in every a line includes many height
Scan electrode, and the sub-scan electrode of fine scanning electrode formed in a first direction scan electrode row, each two scan electrode
Induction electrode described in one is set between row.
13. capacitive touch screens according to claim 8 a, it is characterised in that scan electrode group includes that adjacent M row is swept
Retouching electrode, adjacent scan electrode group shares N row scan electrode, wherein 1≤N≤M-1, and described M, N are positive integer, and M >=2.
14. according to capacitive touch screen described in claim 13, it is characterised in that an induction electrode group includes adjacent P row
Induction electrode, adjacent induction electrode group shares Q row induction electrode；Wherein 1≤Q≤P-1, described P, Q are positive integer, and P >=2.
15. according to capacitive touch screen described in claim 14, it is characterised in that described M with P is equal.
16. according to capacitive touch screen described in claim 15, it is characterised in that described M=P=2 or 3 or 4 or 5 or 6.
17. according to capacitive touch screen described in claim 15, it is characterised in that described N=M-1.
18. according to capacitive touch screen described in claim 15, it is characterised in that described Q=P-1.
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| CN105879387A (en) * | 2014-12-19 | 2016-08-24 | 上海涌杰信息科技有限公司 | Control method for setup of entertainment control based on intelligent peripheral device on capacitive touch screen |
| CN106126002B (en) * | 2016-07-03 | 2020-05-22 | 深圳贝特莱电子科技股份有限公司 | Single-layer multi-point touch function sheet and touch coordinate acquisition method |
| CN106681537A (en) * | 2016-10-24 | 2017-05-17 | 深圳市芯智科技有限公司 | Capacitance type trackpoint mouse and touch coordinate acquisition method thereof |
| CN107765930B (en) * | 2017-09-28 | 2020-10-09 | 珠海普林芯驰科技有限公司 | Capacitance induction detection circuit and method |
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| CN101571781A (en) * | 2008-04-30 | 2009-11-04 | 统宝光电股份有限公司 | Display device |
| CN101847071A (en) * | 2010-03-03 | 2010-09-29 | 敦泰科技有限公司 | Capacitive touch screen of electrodes in staggered arrangement |
| CN102033637A (en) * | 2009-09-29 | 2011-04-27 | 上海天马微电子有限公司 | Touch screen position detection method |
| CN102193669A (en) * | 2010-03-16 | 2011-09-21 | 乐金显示有限公司 | A touch panel and method of manufacturing the same |
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| US8363034B2 (en) * | 2010-04-14 | 2013-01-29 | Panasonic Corporation | Touch panel device |
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| CN101571781A (en) * | 2008-04-30 | 2009-11-04 | 统宝光电股份有限公司 | Display device |
| CN102033637A (en) * | 2009-09-29 | 2011-04-27 | 上海天马微电子有限公司 | Touch screen position detection method |
| CN101847071A (en) * | 2010-03-03 | 2010-09-29 | 敦泰科技有限公司 | Capacitive touch screen of electrodes in staggered arrangement |
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