CN110134295A - Terminal device, capacitance touch screen and its touch identification method - Google Patents
Terminal device, capacitance touch screen and its touch identification method Download PDFInfo
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- CN110134295A CN110134295A CN201810136417.9A CN201810136417A CN110134295A CN 110134295 A CN110134295 A CN 110134295A CN 201810136417 A CN201810136417 A CN 201810136417A CN 110134295 A CN110134295 A CN 110134295A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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Abstract
The invention discloses a kind of terminal device, capacitance touch screen and its touch identification methods, the touch identification method includes: capacitance plane calibration step: under mode of drenching with rain, self-capacitance and mutual capacitance to the electrode plate carry out Time share scanning, dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, to obtain current capacitance plane calibration value, wherein, the capacitance datum plane value is the capacitance plane monitoring-network value obtained when without the contact of any conductor according to the self-capacitance value and mutual capacitance value of electrode plate；First identification step: based on current capacitance plane calibration value, according to the touch operation of current self-capacitance value and mutual capacitance value identification user.Implement technical solution of the present invention, the user in the rainy day can using terminal equipment without barrier, improve user experience.
Description
Technical field
The present invention relates to touch screen technology field more particularly to a kind of terminal devices, capacitance touch screen and its touch recognition
Method.
Background technique
Currently, the terminal device of capacitor touch screen has been widely used in daily life, capacitive touch is improved
The environmental suitability for touching screen becomes one important project of industry.
For Projected capacitive touch screen, self-capacitance and mutual capacitance can be divided by different induction modes, wherein self-capacitance is
The capacitor that each transverse electrode and each longitudinal electrode are constituted with ground respectively, mutual capacitance are what transverse electrode intersected with longitudinal electrode
The capacitor that place is formed.When being scanned to self-capacitance, each transverse electrode is successively detected, according to the change for touching front and back capacitor
Change to determine longitudinal coordinate, then successively detect each longitudinal electrode, lateral coordinates are determined according to the variation for touching front and back capacitor,
It is then combined into the touch coordinate of plane.When being scanned to mutual capacitance, pumping signal successively is issued to transverse electrode, is owned
Longitudinal electrode receives signal simultaneously, the capacitance size at all transverse electrodes available in this way and longitudinal electrode joint,
The coordinate of each touch point can be calculated according to the variation for touching front and back capacitor.Since the principle of two kinds of induction modes is different,
When two touch points occurs in touch screen, if four coordinates can be combined into using the scanning mode of self-capacitance, so as to cause going out
Existing ghost point, can not accomplish real multiple point touching, and the scanning mode of mutual capacitance can more ideally solve multiple point touching and ask
Topic, thus be widely used.
But be found through experiments that, when water droplet drips on mutual capacitance touchscreens, not only result in capacitance touch screen generation
False touch signal or finger touch failure, moreover, former touch area there is also insensitive etc. ask after water droplet is wiped free of
Topic, and water flow is easier to cause the exception of touch screen.Although waterproof performance is capacitance touch in many environmental suitability indexs
The significant index of screen, still, waterproof performance are the waterproofing grade for defining product, also occur many bands currently on the market
The product of waterproof capacitance touch screen, still, this kind of product have only achieved the effect that bubble, leaching are not bad, do not solve
The problem of being used under rain spraying environment.
For the terminal device of special use, differ greatly with regular handset use environment, for example, it is directed to talk back equipment,
User can not make a choice to environment during execution task.As customer group is to the environmental suitability of this kind of product
It is required that raising, for example, Police users need executing task in the rain, soldier needs communicating in the rain, therefore, this kind of production
Product urgent need will improve usage experience of the user under rain spraying environment, enable users to use product really accessible in the rainy day.
Summary of the invention
The technical problem to be solved in the present invention is that not being available capacitive touch for user under rain spraying environment in the prior art
The defect for touching screen provides a kind of terminal device, capacitance touch screen and its touch identification method.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of touch recognition side of capacitance touch screen
Method, the capacitance touch screen include electrode plate, and transverse electrode array and longitudinal electrode array are provided on the electrode plate, described
Touch identification method includes:
Capacitance plane calibration step: under mode of drenching with rain, self-capacitance and mutual capacitance to the electrode plate carry out timesharing and sweep
It retouches, dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, it is current to obtain
Capacitance plane calibration value, wherein the capacitance datum plane value is according to electrode plate when without the contact of any conductor from electricity
Capacitance and mutual capacitance value and the capacitance plane monitoring-network value obtained；
First identification step: based on current capacitance plane calibration value, known according to current self-capacitance value and mutual capacitance value
The touch operation of other user.
Preferably, before the capacitance plane calibration step, further includes:
Mode decision step: self-capacitance and mutual capacitance to the electrode plate carry out Time share scanning, and are examined according to current
The self-capacitance value and mutual capacitance value of survey obtain current capacitance plane monitoring-network value, and judge whether the capacitance plane monitoring-network value is full
Sufficient preset condition, if so, into mode of drenching with rain.
Preferably, in the mode decision step, if it is not, then entering non-mode of drenching with rain；Moreover, the touch recognition side
Method further include:
Second identification step: under non-mode of drenching with rain, it is based on the capacitance datum plane value, according to current self-capacitance value
With the touch operation of mutual capacitance value identification user.
Preferably, in the mode decision step, with first frequency to the self-capacitance of the electrode plate and mutual capacitance into
Row Time share scanning；
In the capacitance plane calibration step, the self-capacitance of the electrode plate and mutual capacitance are divided with second frequency
When scan, wherein second frequency be higher than first frequency.
Preferably, after the mode decision step, further includes:
Prioritizing step: the self-capacitance value and the mutual capacitance value are set and drenched with rain under mode of drenching with rain with non-respectively
Priority under mode, wherein under mode of drenching with rain, the priority of the self-capacitance value is higher than the preferential of the mutual capacitance value
Grade；Under non-mode of drenching with rain, the priority of the mutual capacitance value is higher than the priority of the self-capacitance value；
Moreover, according to the touch operation of current self-capacitance value and mutual capacitance value identification user, comprising:
The touch operation of user is identified according to current self-capacitance value, mutual capacitance value and respective priority.
Preferably, the capacitance plane calibration step further include:
In each detection cycle, in the self-capacitance value and mutual capacitance value progress Time share scanning to the electrode plate, make
Detection number derived from capacitor is greater than the detection number of mutual capacitance.
The present invention also constructs a kind of capacitance touch screen, including substrate and the electrode plate being arranged under the substrate, the electricity
Be provided with transverse electrode array and longitudinal electrode array on pole plate, the capacitance touch screen further include respectively with the transverse electrode
The control module that array is connected with the longitudinal electrode array, moreover, the control module includes:
Capacitance plane calibration unit, for dividing the self-capacitance and mutual capacitance of the electrode plate under mode of drenching with rain
When scan, dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, to obtain
Current capacitance plane calibration value, wherein the capacitance datum plane value is when without the contact of any conductor according to electrode plate
Self-capacitance value and mutual capacitance value and the capacitance plane monitoring-network value obtained；
First recognition unit, for based on current capacitance plane calibration value, according to current self-capacitance value and mutual capacitance
The touch operation of value identification user.
Preferably, mode determination, for the electrode plate self-capacitance and mutual capacitance carry out Time share scanning, and root
Current capacitance plane monitoring-network value is obtained according to current self-capacitance value detected and mutual capacitance value, and judges the capacitance plane inspection
Whether measured value meets preset condition, if so, into mode of drenching with rain.
The present invention also constructs a kind of capacitance touch screen, including memory and processor, and the processor is for executing storage
The step of realizing touch identification method as described above when the computer program stored in device.
The present invention also constructs a kind of terminal device, including above-described capacitance touch screen.
Implement technical solution of the present invention, under mode of drenching with rain, by self-capacitance to capacitance touch screen and mutual capacitance into
Row Time share scanning is carried out dynamic adjustment to capacitance datum plane value, and is used based on capacitance plane calibration value adjusted judgement
The touch operation at family, therefore, the user in the rainy day can using terminal equipment without barrier, improve user experience.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.In attached drawing:
Fig. 1 is the flow chart of the touch identification method embodiment one of capacitance touch screen of the present invention；
Capacitance floor map when Fig. 2A is no user touch operation under drenching with rain mode；
Fig. 2 B is capacitance floor map when having user's touch operation under drenching with rain mode；
Fig. 2 C is capacitance floor map when having user's touch operation under non-mode of drenching with rain；
Fig. 3 is the flow chart of the touch identification method embodiment two of capacitance touch screen of the present invention；
Fig. 4 is the building-block of logic of capacitance touch screen embodiment one of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of the touch identification method embodiment one of capacitance touch screen of the present invention, is illustrated first, the touching
Recognition methods is touched suitable for Projected capacitive touch screen, which includes electrode plate, and cross is provided on electrode plate
To electrod-array and longitudinal electrode array.Moreover, the touch identification method of the embodiment the following steps are included:
S11. capacitance plane calibration step: under mode of drenching with rain, the self-capacitance and mutual capacitance of the electrode plate are divided
When scan, dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, to obtain
Current capacitance plane calibration value, wherein the capacitance datum plane value is when without the contact of any conductor according to electrode plate
Self-capacitance value and mutual capacitance value and the capacitance plane monitoring-network value obtained；
In this step, first it should be noted that, can be by user to the spy on terminal device about the entrance for mode of drenching with rain
Fixed physical button or virtual key is operated and is triggered, and can also be triggered by system automatically according to current environment.Also need
Bright, capacitance datum plane value can be obtained before product export by test of many times, and be stored in the control module.Specifically
Ground makes capacitance touch screen be in the state contacted without any conductor (including hand, water etc.), then to capacitance touch in test
The electrode plate of screen carries out the scanning of mutual capacitance and the scanning of self-capacitance, then in the capacitance matrix of the mutual capacitance of repeated detection
Each element carries out fusion treatment and similarly also melts to each element in the capacitance matrix of the self-capacitance of repeated detection
Conjunction processing, to get capacitance datum plane value.
In addition, being found through experiments that, water has certain otherness with the influence of mutual capacitance to self-capacitance: self-capacitance is compared
Mutual capacitance has preferable anti-interference ability.The embodiment supports two kinds of scanning modes of self-capacitance and mutual capacitance simultaneously, and to two
Kind of capacitor carries out Time share scanning, at this point, self-capacitance value (the capacitance matrix of self-capacitance) in each detection cycle and mutually can be obtained
Capacitance (the capacitance matrix of mutual capacitance), can directly using detected capacitance matrix as current capacitance plane monitoring-network value,
First capacitance matrix can also be handled, it, then will treated holds for example, filtering processing, normalized, average value processing etc.
Value matrix is as capacitance plane monitoring-network value.When in drenching with rain under mode, due to having water flow in touch display screen, if with capacitance
Datum plane value is standard to determine whether effective touch operation has occurred, and will lead to the situation of touch recognition mistake, because
This, it is necessary to dynamic calibration is carried out to capacitance datum plane value.In calibration, a capacitance plane monitoring-network value is often detected, it can
It is subtracted each other with capacitance datum plane value to obtain difference, then to ought be for the previous period in (such as five detection cycles)
All differences average, and using the average value as the adjusted value in current detection period, finally by current detection period institute
The capacitance plane monitoring-network value detected is added with current acquired adjusted value, to obtain current capacitance plane calibration
Value, as shown in Figure 2 A.It should be noted that, the process calibrated to capacitance datum plane value is a dynamic change in real time herein
The process of change, therefore the state of current rain spraying environment can be more reacted, so that being used based on capacitance plane calibration value judgement
When the touch operation of family, more precisely, erroneous judgement will not occur.
S12. the first identification step: based on current capacitance plane calibration value, according to current self-capacitance value and mutual capacitance
The touch operation of value identification user.
In this step, after current capacitance plane calibration value has been determined, so that it may be based on the capacitance plane calibration value pair
The touch operation of user identifies that, when user's touch operation occurs, capacitance plane is as shown in Figure 2 B, is examined at touch location
The capacitance of survey will be greater than the capacitance in capacitance plane calibration value.
Fig. 3 is the flow chart of the touch identification method embodiment two of capacitance touch screen of the present invention, which compares Fig. 1 institute
The embodiment shown, the only difference is that: it further include step S00 and step S20, wherein step S00 is before step S11.Below
Illustrate step S00 and step S20:
S00. mode decision step: self-capacitance and mutual capacitance to the electrode plate carry out Time share scanning, and according to current
Self-capacitance value detected and mutual capacitance value obtain current capacitance plane monitoring-network value, and judge that the capacitance plane monitoring-network value is
It is no to meet preset condition, if so, into mode of drenching with rain；If it is not, then entering non-mode of drenching with rain；
In this step, Time share scanning is carried out to two kinds of capacitors with certain frequency, at this point, each detection cycle can be obtained
Interior self-capacitance value (the capacitance matrix of self-capacitance) and mutual capacitance value (the capacitance matrix of mutual capacitance), can directly will be detected
Capacitance matrix is as current capacitance plane monitoring-network value.Preferably, first capacitance matrix can also be handled, for example, at filtering
Reason, normalized, average value processing etc., then will treated capacitance matrix as capacitance plane monitoring-network value.For example, carry out
When average value processing, can to ought for the previous period in each element in capacitance matrix detected average, and by average value processing
Capacitance matrix afterwards is as current capacitance plane monitoring-network value.
About preset condition, it should be noted that, preset condition can be obtained before product export by test of many times, and be stored
In the control module of product, preset condition includes: and the corresponding first threshold of mutual capacitance value, corresponding with self-capacitance value second
Percentage corresponding to threshold value and every kind of threshold value difference.In a specific implementation, the case where meeting preset condition, is for example
Are as follows: for current capacitance plane monitoring-network value, capacitance is greater than accounting for for the number of elements of first threshold in the capacitance matrix of mutual capacitance
Than being greater than the first percentage (such as 30%)；And/or capacitance is greater than the number of elements of second threshold in the capacitance matrix of self-capacitance
Accounting is greater than the second percentage (such as 50%)；And/or capacitance is greater than the number of elements of first threshold in the capacitance matrix of mutual capacitance
Accounting and self-capacitance capacitance matrix in capacitance be greater than the sum of accounting of number of elements of second threshold and be greater than third percentage
(such as 60%), etc..
S20. the second identification step: under non-mode of drenching with rain, being based on the capacitance datum plane value, according to current from electricity
The touch operation of capacitance and mutual capacitance value identification user.
In this step, non-to drench with rain under mode, if the touch operation of user occurs, capacitance plane is as shown in Figure 2 C, that is,
Capacitance detected is greater than the capacitance in capacitance datum plane value at touch location.
In a preferred embodiment, self-capacitance and mutual capacitance in step S00, with first frequency to the electrode plate
Carry out Time share scanning；In step s 11, Time share scanning is carried out to the self-capacitance of the electrode plate and mutual capacitance with second frequency,
Wherein, second frequency is higher than first frequency.
In this embodiment, it should be noted that, show that self-capacitance has preferable anti-interference ability although testing,
It is that water droplet or droplet on capacitance touch screen just has preferable anti-interference ability under static state.And in rain spraying environment
Under, what is be likely to form on capacitance touch screen is water flow (flowing water drop or droplet), therefore, under mode of drenching with rain, can be increased
The detection frequency of self-capacitance and mutual capacitance, for example, second frequency can be N*f1, and N is oneself greater than 1 if first frequency is f1
So number.By carrying out isochronous surface to initial detection cycle, make in each detection cycle after slice, water flow is equivalent to phase
To static droplet or water droplet, in this way, according to self-capacitance value detected in each detection cycle after slice and mutual electricity
When capacitance judges the touch operation of user, more precisely, erroneous judgement is reduced.
In a preferred embodiment, further comprising the steps of after step S00:
S30. prioritizing step: it is respectively under mode of drenching with rain and non-that the self-capacitance value and the mutual capacitance value are set
Priority under mode of drenching with rain, wherein under mode of drenching with rain, the priority of the self-capacitance value is higher than the excellent of the mutual capacitance value
First grade；Under non-mode of drenching with rain, the priority of the mutual capacitance value is higher than the priority of the self-capacitance value；
Moreover, in step S12 and step S20, according to the touch of current self-capacitance value and mutual capacitance value identification user
Operation, comprising:
The touch operation of user is identified according to current self-capacitance value, mutual capacitance value and respective priority.
It in this embodiment,, can be by the excellent of mutual capacitance since multiple point touching is supported in mutual capacitance under non-mode of drenching with rain
First grade sets a higher value, and the priority of self-capacitance is set a lower value, that is, by preset strategy preferentially according to mutually electricity
The touch operation of capacitance identification user；And under mode of drenching with rain, since the anti-interference ability of self-capacitance is preferable, can will from electricity
The priority of appearance sets a higher value, and the priority of mutual capacitance is set a lower value, that is, presses the preferential root of preset strategy
According to the touch operation of self-capacitance value identification user.To guarantee regardless of can accurately identify the touching of user under which kind of mode
Touch operation.
In a preferred embodiment, step S11 further include:
In each detection cycle, in the self-capacitance value and mutual capacitance value progress Time share scanning to the electrode plate, make
Detection number derived from capacitor is greater than the detection number of mutual capacitance
In this embodiment, under mode of drenching with rain, since the anti-interference ability of self-capacitance is preferable, self-capacitance can be increased
Detection number, equivalent to increase the weighted value of self-capacitance value, for example, in a detection cycle, self-capacitance is detected twice,
And mutual capacitance only detects once, may improve the accuracy of identification of user's touch operation in this way.
Fig. 4 is the building-block of logic of capacitance touch screen embodiment one of the present invention, and the capacitance touch screen of the embodiment includes base
Plate (not shown) and the electrode plate (not shown) being arranged under the substrate are provided with transverse electrode array and longitudinal direction on electrode plate
Electrod-array, wherein the substrate can be glass substrate or other suitable substrates.In addition, the capacitance touch screen further includes point
The control module not connect with the transverse electrode array and the longitudinal electrode array, moreover, the control module includes capacitance
Plane calibration unit 11 and the first recognition unit 12, wherein capacitance plane calibration unit 11 is used under mode of drenching with rain, to described
The self-capacitance of electrode plate and mutual capacitance carry out Time share scanning, flat to capacitance according to current self-capacitance value detected and mutual capacitance value
Face a reference value carries out dynamic calibration, to obtain current capacitance plane calibration value, wherein the capacitance datum plane value is in nothing
The capacitance plane monitoring-network value that any conductor obtains when contacting according to the self-capacitance value and mutual capacitance value of electrode plate；First identification is single
Member 12 according to the touch of current self-capacitance value and mutual capacitance value identification user for grasping based on current capacitance plane calibration value
Make.
Further, capacitance touch screen of the invention further includes mode determination and the second recognition unit, which sentences
Disconnected unit is used to carry out the self-capacitance of the electrode plate and mutual capacitance Time share scanning, and according to current self-capacitance value detected
Current capacitance plane monitoring-network value is obtained with mutual capacitance value, and judges whether the capacitance plane monitoring-network value meets preset condition,
If so, into mode of drenching with rain；If it is not, then entering non-mode of drenching with rain.Second recognition unit is used under non-mode of drenching with rain, and is based on
The capacitance datum plane value, according to the touch operation of current self-capacitance value and mutual capacitance value identification user.
Preferably, mode determination is used to carry out timesharing to the self-capacitance of the electrode plate and mutual capacitance with first frequency
Scanning；Capacitance plane calibration unit 11 is used to carry out timesharing to the self-capacitance of the electrode plate and mutual capacitance with second frequency to sweep
It retouches, wherein second frequency is higher than first frequency.
In a preferred embodiment, control module further includes priority setting unit, which is used for
The priority of the self-capacitance value and the mutual capacitance value respectively under mode of drenching with rain and under non-mode of drenching with rain is set, wherein
It drenches with rain under mode, the priority of the self-capacitance value is higher than the priority of the mutual capacitance value；It is described mutual under non-mode of drenching with rain
The priority of capacitance is higher than the priority of the self-capacitance value.Moreover, the first recognition unit 12 is also used to based on the calibration
Capacitance plane identifies the touch operation of user according to current self-capacitance value, mutual capacitance value and respective priority.Second identification
Unit is also used to be identified based on the benchmark capacitance plane according to current self-capacitance value, mutual capacitance value and respective priority
The touch operation of user.
In a preferred embodiment, the first recognition unit 12 is also used in each detection cycle, to the electrode
When the self-capacitance value and mutual capacitance value of plate carry out Time share scanning, so that the detection number of self-capacitance is greater than the detection time of mutual capacitance
Number.
Further, which further includes the waterproof film layer set on the upper surface of base plate, for example, nanometer thin
Film layer.
The present invention also constructs a kind of capacitance touch screen, including memory and processor, and the processor is for executing memory
It realizes when the computer program of middle storage such as the step of above-mentioned touch identification method.
The present invention also constructs a kind of terminal device, including above-described capacitance touch screen, which is, for example, pair
Say equipment, mobile phone etc..
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any bun
Change, equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of touch identification method of capacitance touch screen, the capacitance touch screen include electrode plate, it is arranged on the electrode plate
There are transverse electrode array and longitudinal electrode array, which is characterized in that the touch identification method includes:
Capacitance plane calibration step: under mode of drenching with rain, self-capacitance and mutual capacitance to the electrode plate carry out Time share scanning, root
Dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, to obtain current capacitance
Plane calibration value, wherein the capacitance datum plane value be when without the contact of any conductor according to the self-capacitance value of electrode plate and
Mutual capacitance value and the capacitance plane monitoring-network value obtained；
First identification step: it based on current capacitance plane calibration value, is used according to current self-capacitance value and mutual capacitance value identification
The touch operation at family.
2. the touch identification method of capacitance touch screen according to claim 1, which is characterized in that in capacitance plane school
Before quasi- step, further includes:
Mode decision step: self-capacitance and mutual capacitance to the electrode plate carry out Time share scanning, and according to current detected
Self-capacitance value and mutual capacitance value obtain current capacitance plane monitoring-network value, and it is pre- to judge whether the capacitance plane monitoring-network value meets
If condition, if so, into mode of drenching with rain.
3. the touch identification method of capacitance touch screen according to claim 2, which is characterized in that walked in the mode decision
In rapid, if it is not, then entering non-mode of drenching with rain；Moreover, the touch identification method further include:
Second identification step: under non-mode of drenching with rain, being based on the capacitance datum plane value, according to current self-capacitance value and mutually
The touch operation of capacitance identification user.
4. the touch identification method of capacitance touch screen according to claim 2, which is characterized in that
In the mode decision step, Time share scanning is carried out to the self-capacitance of the electrode plate and mutual capacitance with first frequency；
In the capacitance plane calibration step, timesharing is carried out to the self-capacitance of the electrode plate and mutual capacitance with second frequency and is swept
It retouches, wherein second frequency is higher than first frequency.
5. the touch identification method of capacitance touch screen according to claim 3, which is characterized in that walked in the mode decision
After rapid, further includes:
Prioritizing step: the self-capacitance value and the mutual capacitance value are set respectively under mode of drenching with rain and non-mode of drenching with rain
Under priority, wherein under mode of drenching with rain, the priority of the self-capacitance value is higher than the priority of the mutual capacitance value；?
Non- to drench with rain under mode, the priority of the mutual capacitance value is higher than the priority of the self-capacitance value；
Moreover, according to the touch operation of current self-capacitance value and mutual capacitance value identification user, comprising:
The touch operation of user is identified according to current self-capacitance value, mutual capacitance value and respective priority.
6. the touch identification method of capacitance touch screen according to claim 1, which is characterized in that the capacitance plane calibration
Step further include:
In each detection cycle, in the self-capacitance value and mutual capacitance value progress Time share scanning to the electrode plate, so that from
The detection number of capacitor is greater than the detection number of mutual capacitance.
7. a kind of capacitance touch screen is provided with cross on the electrode plate including substrate and the electrode plate being arranged under the substrate
To electrod-array and longitudinal electrode array, which is characterized in that the capacitance touch screen further include respectively with the transverse electrode battle array
The control module connected with the longitudinal electrode array is arranged, moreover, the control module includes:
Capacitance plane calibration unit, under mode of drenching with rain, self-capacitance and mutual capacitance to the electrode plate to carry out timesharing and sweep
It retouches, dynamic calibration is carried out to capacitance datum plane value according to current self-capacitance value detected and mutual capacitance value, it is current to obtain
Capacitance plane calibration value, wherein the capacitance datum plane value is according to electrode plate when without the contact of any conductor from electricity
Capacitance and mutual capacitance value and the capacitance plane monitoring-network value obtained；
First recognition unit, for being known according to current self-capacitance value and mutual capacitance value based on current capacitance plane calibration value
The touch operation of other user.
8. capacitance touch screen according to claim 7, which is characterized in that further include:
Mode determination for the self-capacitance and mutual capacitance progress Time share scanning to the electrode plate, and is examined according to current
The self-capacitance value and mutual capacitance value of survey obtain current capacitance plane monitoring-network value, and judge whether the capacitance plane monitoring-network value is full
Sufficient preset condition, if so, into mode of drenching with rain.
9. a kind of capacitance touch screen, which is characterized in that including memory and processor, the processor is for executing in memory
The step of touch identification method as described in any one of claim 1-6 is realized when the computer program of storage.
10. a kind of terminal device, which is characterized in that including the described in any item capacitance touch screens of claim 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810136417.9A CN110134295B (en) | 2018-02-09 | 2018-02-09 | Terminal device, capacitive touch screen and touch identification method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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