CN110134281A - Capacitive detection system and method - Google Patents
Capacitive detection system and method Download PDFInfo
- Publication number
- CN110134281A CN110134281A CN201910409216.6A CN201910409216A CN110134281A CN 110134281 A CN110134281 A CN 110134281A CN 201910409216 A CN201910409216 A CN 201910409216A CN 110134281 A CN110134281 A CN 110134281A
- Authority
- CN
- China
- Prior art keywords
- capacitance
- layer
- induced electricity
- capacitive sensing
- capacitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a kind of capacitive detection system and method, which includes: capacitance sensor and detection unit；Capacitance sensor when for receiving operational order, generates the first induced electricity capacitance and the second induced electricity capacitance；Detection unit, for detecting the first induced electricity capacitance and the second induced electricity capacitance, first induced electricity capacitance and the first constant capacitance are calculated, obtain first capacitor variable quantity, second induced electricity capacitance and the second constant capacitance are calculated, the second capacitance change is obtained, according to first capacitor variable quantity and the second capacitance change, it determines action type corresponding with operational order, and exports control instruction corresponding with action type.Using system provided by the invention, by detecting the induced electricity capacitance of capacitance sensor, carry out induced electricity capacitance and constant capacitance that calculated value is calculated, according to calculated value, the action type for determining operational order avoids the erroneous judgement to touch screen, improves the man-machine interaction experience of touch screen.
Description
Technical field
The present invention relates to detection field more particularly to a kind of capacitive detection system and methods.
Background technique
Touch screen Industry Quick Development in recent years, associated product all become easy-to-sell goods in the market, and touch screen is made
For a kind of input equipment, user can carry out the manipulation such as touching to the object of display when in use, so that man-machine friendship
It is mutually simpler, intuitive and humanized.Touch screen is divided into capacitive touch screen and resistive touch screen, and capacitive touch screen is main
It is applied to the capacitance measurement technique of capacitance sensor, current capacitance measurement technique is divided into self-capacitance detection and mutual capacitance inspection
It surveys.
Inventor the study found that the capacitance sensor in existing touch screen at work, either self-capacitance detection also
It is mutual capacitance detection, can only have identified operation object touching, it is conductor or non-conductor that crop of going out for drill, which cannot be distinguished, and is behaviour
Crop approaches, normally touches or firmly touch, and the erroneous judgement to touch screen is formed, so that poor user experience.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of capacitive detection system and methods, by detecting capacitance sensing
The induced electricity capacitance of device calculates induced electricity capacitance with the constant capacitance obtained in advance, according to be calculated as a result,
The action type for determining operation of capacitor inductor avoids the erroneous judgement to touch screen, improves the man-machine interaction experience of touch screen.
A kind of capacitive detection system, comprising:
Capacitance sensor and detection unit；
The capacitance sensor is connected with the detection unit；
The capacitance sensor, for when receiving operational order, generating the first sense corresponding with the operational order
Answer capacitance and the second induced electricity capacitance；
The detection unit, for detecting the first induced electricity capacitance and the second induced electricity capacitance, and will be described
First induced electricity capacitance and the first constant capacitance obtained in advance are calculated, and first capacitor variable quantity is obtained, by described the
Two induced electricity capacitances and the second constant capacitance obtained in advance are calculated, and the second capacitance change is obtained, according to described the
One capacitance change and second capacitance change determine action type corresponding with the operational order, and output and institute
State the corresponding control instruction of action type.
Above-mentioned system, optionally, the capacitance sensor, comprising:
Cover sheet, capacitive sensing layer, insulating layer, shielded layer, buffer layer and the pressure sensitive layer successively arranged；
The cover sheet, for protecting the capacitive sensing layer, the insulating layer, the shielded layer, the buffer layer
With the pressure sensitive layer；
The capacitive sensing layer is located at the downside of the cover sheet, for judging whether the capacitive sensing layer is from electricity
Hold structure, if the capacitive sensing layer is self-capacitance structure, forms first between the capacitive sensing layer and the shielded layer
Fixed capacity, if the capacitive sensing layer is not self-capacitance structure, the emission electrode in the capacitive sensing layer and reception electricity
The first fixed capacity is formed between pole, when receiving the operational order, according to first fixed capacity, generate with it is described
Corresponding first inductance capacitance of operational order；
The insulating layer is located on the downside of the capacitive sensing layer, for by the capacitive sensing layer be systematically isolated；
The shielded layer is located on the downside of the insulating layer, for capacitive sensing layer and the pressure sensitive described in electrical isolation
Layer；
The buffer layer between the shielded layer and the pressure sensitive layer, for the shielded layer and with it is described
Spacing is formed between pressure sensitive layer, and when receiving operational order, change the shielded layer and the pressure sensitive layer it
Between spacing；
The pressure sensitive layer, for forming second inductance capacitance between the shielded layer, and in the buffering
Layer generates the second induced electricity capacitance after deformation occurs.
Above-mentioned system, optionally, the capacitance sensor, further includes:
Substrate；
The substrate is located on the downside of the pressure sensitive layer, the protection cap being used to support in the capacitive sensing device
Plate, capacitive sensing layer, insulating layer, shielded layer, buffer layer and pressure sensitive layer.
Above-mentioned system, optionally, the detection unit, comprising:
Capacitance detecting group, shroud module, judgment module and output module；
The first end of the capacitance detecting group respectively with the capacitive sensing layer of the capacitance sensor and pressure sensitive layer phase
Connection, for detecting the first induced electricity capacitance and the second induced electricity capacitance, and will the first induced electricity capacitance with
The second induced electricity capacitance is sent to the judgment module；
The shroud module is connected with the shielded layer of the capacitance sensor, for the shielded layer to the capacitance sensor
Screen potential is provided；
The first end of the judgment module is connected with the second end of the capacitance detecting group, is used for first induced electricity
Capacitance and the first constant capacitance obtained in advance are calculated, and obtain first capacitor variable quantity, and by second induced electricity
Capacitance and the second constant capacitance obtained in advance are calculated, and obtain the second capacitance change, and according to the first capacitor
Variable quantity and second capacitance change, determine corresponding with operational order action type, and by the action type
It is sent to the output module；
The output module is connected with the second end of the judgment module, for according to the action type, generation and institute
The corresponding control instruction of action type is stated, and exports the control instruction.
Above-mentioned system, optionally, the capacitance detecting group includes:
First capacitor detection module and the second capacitive detection module；
The first end of the first capacitor detection module is connected with the capacitive sensing layer, second end and the judgement mould
Block is connected, for detecting the first induced electricity capacitance；
The first end of second capacitive detection module is connected with the pressure sensitive layer, second end and the judgement mould
Block is connected, for detecting the second induced electricity capacitance.
Above-mentioned system, optionally, the capacitance detecting group includes:
First switch, second switch, time-sequence control module and third capacitive detection module；
The first end of the first switch is connected with the capacitive sensing layer, second end and the third capacitance detecting mould
The first end of block is connected；
The first end of the second switch is connected with the pressure sensitive layer, second end and the third capacitance detecting mould
The first end of block is connected；
One end of the time-sequence control module is connected with the third end of the first switch, and the other end is opened with described second
The third end of pass is connected, for controlling the on-off of the first switch and the second switch；
The second end of the third capacitive detection module is connected with the judgment module.
A kind of capacitance determining method, comprising: the capacitance determining method is suitable for above-mentioned capacitive detection system, the side
Method includes:
When the capacitance sensor receives operational order, referring to the operation for the capacitance sensor generation is obtained
Enable corresponding first induced electricity capacitance and the second induced electricity capacitance；
The first constant capacitance obtained by the first induced electricity capacitance and in advance calculates, and obtains first capacitor and becomes
Change amount, and the second constant capacitance obtained by the second induced electricity capacitance and in advance calculates, and obtains the second capacitor and becomes
Change amount；
According to the first capacitor variable quantity and second capacitance change, determine that the capacitance sensor receives institute
The corresponding action type of operational order is stated, and exports control instruction corresponding with the action type, to execute and the control
Instruct corresponding operation.
Above-mentioned method, it is optionally, described according to the first capacitor variable quantity and second capacitance change, it determines
The capacitance sensor receives the corresponding action type of the operational order, comprising:
The first capacitor variable quantity is compared with preset first threshold, obtains the first comparison result；
Second capacitance change is compared with preset second threshold, obtains the second comparison result；
According to first comparison result and second comparison result, determine that the capacitance sensor receives the behaviour
Make to instruct corresponding action type.
A kind of storage medium, which is characterized in that the storage medium includes the instruction of storage, wherein transported in described instruction
Equipment where controlling the storage medium when row executes above-mentioned capacitance determining method.
A kind of electronic equipment, including memory and one perhaps one of them or one of more than one instruction with
Upper instruction is stored in memory, and is configured to execute above-mentioned capacitance detecting side by one or more than one processor
Method.
Compared with prior art, the present invention includes the following advantages:
The invention discloses a kind of capacitive detection system and method, the system comprises: capacitance sensor and detection unit；
The capacitance sensor is connected with the detection unit；The capacitance sensor, for generating when receiving operational order
The first induced electricity capacitance corresponding with the operational order and the second induced electricity capacitance；The detection unit, it is described for detecting
First induced electricity capacitance and the second induced electricity capacitance, and first obtained by the first induced electricity capacitance and in advance is fixed
Capacitance is calculated, and first capacitor variable quantity is obtained, and second obtained by the second induced electricity capacitance and in advance is fixed electric
Capacitance is calculated, and obtains the second capacitance change, according to the first capacitor variable quantity and second capacitance change, really
Fixed action type corresponding with the operational order, and export control instruction corresponding with the action type.Using the present invention
The capacitive detection system of offer is consolidated induced electricity capacitance with what is obtained in advance by detecting the induced electricity capacitance of capacitance sensor
Determine capacitance to carry out that capacitance change is calculated, according to capacitance change, determines the action type of operation of capacitor inductor, keep away
Exempt from the erroneous judgement to touch screen, improves the man-machine interaction experience of touch screen.
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
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of system structure diagram of capacitive detection system provided by the invention；
Fig. 2 is a kind of exemplary diagram of capacitive detection system provided by the invention；
Fig. 3 is a kind of another exemplary diagram of capacitive detection system provided by the invention；
Fig. 4 is a kind of another exemplary diagram of capacitive detection system provided by the invention；
Fig. 5 is a kind of another exemplary diagram of capacitive detection system provided by the invention；
Fig. 6 is a kind of another exemplary diagram of capacitive detection system provided by the invention；
Fig. 7 is a kind of method flow diagram of capacitance determining method provided by the invention；
Fig. 8 is the structural schematic diagram of a kind of electronic equipment provided by the 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.
The embodiment of the invention provides a kind of capacitive detection system, the executing subject of the system can be to operate in various shiftings
The processor of dynamic equipment, the system construction drawing of the system is as shown in Figure 1, specifically include:
Capacitance sensor 101: for when receiving operational order, generating the first induction corresponding with the operational order
Capacitance and the second induced electricity capacitance；
System provided in an embodiment of the present invention, when operation object comes close to or in contact with capacitance sensor, i.e., capacitance sensor connects
When receiving operational order, capacitance sensor generates the first induced electricity capacitance corresponding with operational order and the second induced electricity capacitance,
Wherein, the action type for operating object can be for the close induction of conductor, conductor normally touch, conductor firmly touches and insulator is exerted oneself
It touches.
Detection unit 102: for detecting the first induced electricity capacitance and the second induced electricity capacitance, and by described
One induced electricity capacitance and the first constant capacitance obtained in advance are calculated, and first capacitor variable quantity are obtained, by described second
Induced electricity capacitance and the second constant capacitance obtained in advance are calculated, and the second capacitance change are obtained, according to described first
Capacitance change and second capacitance change, determine corresponding with operational order action type, and output with it is described
The corresponding control instruction of action type.
System provided in an embodiment of the present invention, detection unit 102 are connected with capacitance sensor 101, and detection unit is for examining
Survey capacitance sensor generate the first induced electricity capacitance and the second induced electricity capacitance, and the first induced electricity capacitance that will test and
The first constant capacitance obtained in advance is calculated, and first capacitor variable quantity, and the second inductance capacitance that will test are obtained
Value and the second constant capacitance obtained in advance are calculated, and the second capacitance change is obtained, wherein by the first inductance capacitance and
First fixed capacity is calculated, and the second inductance capacitance and the second fixed capacity are calculated, and can be the first sense
It answers capacitor and the first fixed capacity to carry out difference calculating, and takes absolute value to the result after difference calculating, and second is incuded
Capacitor and the second fixed capacity carry out difference calculating, and take absolute value to the result after difference calculating；First obtained will be calculated
Capacitance change and the second capacitance change are compared with corresponding threshold value respectively, so that it is determined that behaviour corresponding with operational order
Make type, wherein action type includes that conductor is normally touched close to induction, conductor, conductor firmly touches and insulator firmly touches
It touches, and control instruction corresponding with action type is exported.
Capacitive detection system provided in an embodiment of the present invention, including capacitance sensor and detection unit, when operation object is close
Or when hand capacity sensor, i.e., when capacitance sensor receives operational order, capacitance sensor generates the first induced electricity capacitance
With the second induced electricity capacitance, detection unit is used to detect the first induced electricity capacitance and the second inductance capacitance of capacitance sensor generation
Value, and the first induced electricity capacitance that will test and the first constant capacitance obtained in advance are calculated, and first capacitor is obtained
Variable quantity, and the second induced electricity capacitance that will test and the second constant capacitance obtained in advance are calculated, and obtain the
Two capacitance changes determine the operational order of operation of capacitor sensor according to first capacitor variable quantity and the second capacitance change
Corresponding action type, the action type are the type that object contacts or incudes, including conductor is normally touched close to induction, conductor
It touches, conductor firmly touches and insulator firmly touches.Using capacitive detection system provided in an embodiment of the present invention, pass through detection electricity
Induced electricity capacitance with the constant capacitance obtained in advance is carried out that capacitance variations are calculated by the induced electricity capacitance for holding sensor
Amount determines the action type of operation of capacitor inductor, avoids the erroneous judgement to touch screen, improve touch according to capacitance change
The man-machine interaction experience of screen.
Capacitance sensor 101 disclosed in embodiments of the present invention Fig. 1, comprising:
Cover sheet, capacitive sensing layer, insulating layer, shielded layer, buffer layer and the pressure sensitive layer successively arranged；
The cover sheet, for protecting the capacitive sensing layer, the insulating layer, the shielded layer, the buffer layer
With the pressure sensitive layer；
The capacitive sensing layer is located at the downside of the cover sheet, for judging whether the capacitive sensing layer is from electricity
Hold structure, if the capacitive sensing layer is self-capacitance structure, forms first between the capacitive sensing layer and the shielded layer
Fixed capacity, if the capacitive sensing layer is not self-capacitance structure, the emission electrode in the capacitive sensing layer and reception electricity
The first fixed capacity is formed between pole, when receiving the operational order, according to first fixed capacity, generate with it is described
Corresponding first inductance capacitance of operational order；
The insulating layer is located on the downside of the capacitive sensing layer, for by the capacitive sensing layer be systematically isolated；
The shielded layer is located on the downside of the insulating layer, for capacitive sensing layer and the pressure sensitive described in electrical isolation
Layer；
The buffer layer between the shielded layer and the pressure sensitive layer, for the shielded layer and with it is described
Spacing is formed between pressure sensitive layer, and when receiving operational order, change the shielded layer and the pressure sensitive layer it
Between spacing；
The pressure sensitive layer, for forming second inductance capacitance between the shielded layer, and in the buffering
Layer generates the second induced electricity capacitance after deformation occurs.
System provided in an embodiment of the present invention, capacitance sensor include the cover sheet successively arranged, capacitive sensing layer, absolutely
Edge layer, shielded layer, buffer layer and pressure sensitive layer, the capacitance sensor further include substrate, and substrate is located under pressure sensitive layer
Side, the structure being used to support in capacitance sensor, i.e., cover sheet, capacitive sensing layer, insulating layer in Support Capacitor sensor,
Shielded layer, buffer layer and pressure sensitive layer；Cover sheet in capacitance sensor is the top of capacitance sensor, for ensuring to protect
Protecting cover plate structure below from arrive water, greasy dirt pollution or other mechanical damages, the material of cover sheet can be glass,
Acrylic, plastic or other material；Capacitive sensing layer can be self-capacitance structure, be also possible to mutual capacitance structure, when capacitive sensing layer
When for self-capacitance structure, form the first fixed capacity between the capacitor plate and shielded layer of capacitive sensing layer, the shielded layer with
The shroud module of detection unit is connected, and screen potential is provided from the shroud module of detection unit to the shielded layer, so that described
The first fixed capacity is formed between capacitive sensing layer and shielded layer, when receiving operational order, is equivalent to the first fixed capacity
A upper capacitor in parallel, that is, produce the first induced electricity capacitance；When capacitive sensing layer is mutual capacitance structure, in capacitive sensing layer
Emission electrode and receiving electrode between form the first fixed capacity, when receiving operational order, formed between capacitor plate
Capacitor change, produce the first induced electricity capacitance.
It should be noted that capacitive sensing layer can be single self-capacitance structure or single mutual capacitance structure, realize single
Key detection, capacitive sensing layer may be multiple self-capacitance structures or multiple mutual capacitance structures, realize sliding detection or touch
Coordinate measurement.
Insulating layer is located at the downside of capacitive sensing layer, for by capacitive sensing layer be systematically isolated, in order to avoid capacitive sensing
With ground short circuit occurs for layer, and the material of insulating layer can be insulating cement；Shielded layer is located at the downside of insulating layer, and the material of shielded layer can
Metal is thought, for by capacitive sensing layer and pressure sensitive layer electrical isolation, shielded layer to need to be connected to the fixation current potential of system
On, screen potential is provided by the shroud module of detection unit；Buffer layer is between shielded layer and pressure sensitive layer, when receiving
When operational order, upper and lower displacement occurs for buffer layer, to change the spacing of shielded layer and pressure sensitive layer, so that shielded layer
Capacitance between pressure sensitive layer changes, the second induced electricity capacitance of generation, under original state, i.e., does not receive operation
When instruction, the second fixed capacity is formed between shielded layer and pressure sensitive layer, the material of buffer layer can be foam；Pressure sensitive
The material of layer can be metal plate, and the second induced electricity capacitance becomes as the spacing between shielded layer and pressure sensitive layer changes
Change.
Detection unit 102 disclosed in embodiments of the present invention Fig. 1, comprising:
Capacitance detecting group, shroud module, judgment module and output module；
The first end of the capacitance detecting group respectively with the capacitive sensing layer of the capacitance sensor and pressure sensitive layer phase
Connection, for detecting the first induced electricity capacitance and the second induced electricity capacitance, and will the first induced electricity capacitance with
The second induced electricity capacitance is sent to the judgment module；
The shroud module is connected with the shielded layer of the capacitance sensor, for the shielded layer to the capacitance sensor
Screen potential is provided；
The first end of the judgment module is connected with the second end of the capacitance detecting group, is used for first induced electricity
Capacitance and the first constant capacitance obtained in advance are calculated, and obtain first capacitor variable quantity, and by second induced electricity
Capacitance and the second constant capacitance obtained in advance are calculated, and obtain the second capacitance change, and according to the first capacitor
Variable quantity and second capacitance change, determine corresponding with operational order action type, and by the action type
It is sent to the output module；
The output module is connected with the second end of the judgment module, for according to the action type, generation and institute
The corresponding control instruction of action type is stated, and exports the control instruction.
System provided in an embodiment of the present invention, capacitive detection module group may include: first capacitor detection module and second
The first end of capacitive detection module, first capacitor detection module is connected with capacitive sensing layer, and the second of first capacitor detection module
End is connected with judgment module, for detecting the first induced electricity capacitance；The first end and pressure sensitive layer of second capacitive detection module
It is connected, the second end of the second capacitive detection module is connected with judgment module, for detecting the second induced electricity capacitance.
Capacitive detection module also may include: first switch, second switch, time-sequence control module and third capacitance detecting mould
Block；The first end of first switch is connected with capacitive sensing layer, the second end of first switch and the first of third capacitive detection module
End is connected；The first end of second switch is connected with pressure sensitive layer, second end and the third capacitive detection module of second switch
First end is connected；One end of time-sequence control module is connected with the third end of first switch, the third of the other end and second switch
End is connected, for controlling the on-off of the first switch and the second switch, for example, when time-sequence control module exports high level
When, first switch closure, second switch disconnects, and third capacitive detection module is for detecting first capacitor influence value, when timing mould
When block exports low level, first switch is disconnected, and second switch closure, third capacitive detection module is for detecting the second inductance capacitance
Value；The second end of third capacitive detection module is connected with judgment module.
When judgment module receives the first induced electricity capacitance and the second induced electricity capacitance of capacitive detection module group transmission,
The first constant capacitance obtained by the first induced electricity capacitance and in advance calculates, and the calculating can be the first induced electricity
Capacitance and the first constant capacitance obtained in advance do difference operation, and the result after difference operation is taken absolute value, and obtain the
One capacitance change, and the second constant capacitance obtained by the second induced electricity capacitance and in advance does difference operation, and to difference
Result after operation takes absolute value, and obtains the second capacitance change, first capacitor variable quantity is compared with first threshold, with
And the second capacitance change is compared with second threshold, so that it is determined that action type corresponding with operational order, operates class
Type includes the close induction of conductor, conductor normally touches and conductor firmly touches and insulator firmly touch, and will be referred to operation
Corresponding action type is enabled to be sent to output module, output module refers to according to action type output control corresponding with action type
It enables, control instruction can be different bright light mode, different audios or different display results etc..
The above-mentioned specific deterministic process of the judgment module being related to is illustrated as follows:
First threshold is TH1, second threshold TH2
Judgment module receives the first induced electricity capacitance C1 ' and the second induced electricity capacitance of capacitive detection module group transmission
When C2 ', the first induced electricity capacitance C1 ' and the first constant capacitance C1 are done into difference operation and the result after difference operation is taken absolutely
To value, first capacitor variation delta C1 is obtained, the second induced electricity capacitance C2 ' and the second constant capacitance C2 are done into difference operation simultaneously
It takes absolute value to the result after difference operation, obtains the second capacitance change Δ C2；
When finger (or conductor) is normally contacted but do not touched firmly, C1 ' is changed greatly relative to C1's, and Δ C1 is larger,
Δ C1>TH1, since the pressure normally contacted is smaller, C2 ' is smaller relative to the variation of C2, Δ C2<TH2；
When finger (or conductor) firmly touches, C1 ' is changed greatly relative to C1's, and Δ C1 is larger, Δ C1 > TH1, due to
The pressure firmly touched is larger, and C2 ' is changed greatly relative to C2's, Δ C2 > TH2；
When insulator firmly touches, since the dielectric constant of insulating bodies is smaller, the influence to C1 ' is little, and C1 ' is opposite
Smaller in the variation of C1, Δ C1 is smaller, Δ C1 < TH1, due to firmly touch pressure it is larger, C2 ' relative to C2 variation compared with
Greatly, Δ C2 > TH2；
I.e. as Δ C1 < TH1, and when Δ C2 < TH2, judge action type for finger (or conductor) contact induction；
As Δ C1>TH1, and when Δ C2<TH2, judge that action type normally touches for finger (or conductor)；
As Δ C1 > TH1, and when Δ C2 > TH2, judge that action type firmly touches for finger (or conductor)；
As Δ C1<TH1, and when Δ C2>TH2, judge that action type firmly touches for insulator.
It should be noted that the modules and structure of capacitive detection system provided by the embodiment of the present invention can pass through
Glue is bonded together, and can also form an entirety by pressing.
In method provided in an embodiment of the present invention, the realization of capacitive detection system is illustrated:
Citing one, as shown in Figure 2:
Capacitive sensing layer uses single self-capacitance structure, and the first fixed capacity is formed between capacitive sensing layer and shielded layer,
The second fixed capacity is formed between pressure sensitive layer and shielded layer, capacitive sensing layer is directly connected with first capacitor detection module,
For generating the first induced electricity capacitance, pressure sensitive layer module is directly connected with the second capacitive detection module, for generating second
Induced electricity capacitance, when conductor or insulator approach or touch sensor protection cover board, first capacitor detection module detects
One induced electricity capacitance C1 ', the second capacitive detection module detect the second induced electricity capacitance C2 ', and first capacitor detection module is by C1 '
It is sent to judgment module, C2 ' is sent to judgment module by the second capacitance detection unit, and judgment module calculates the variation of C1 ' first
The variation delta C2 of Δ C1 and C2 ' are measured, and determines threshold interval locating for Δ C1 and Δ C2, so that it is determined that being the close sense of conductor
It answers, conductor normally touches, conductor firmly touches or insulator firmly touches.
Citing two, as shown in Figure 3:
Capacitive sensing layer uses single self-capacitance structure, and the first fixed capacity is formed between capacitive sensing layer and shielded layer,
The second fixed capacity is formed between pressure sensitive layer and shielded layer, capacitive sensing layer passes through first switch and third capacitance detecting mould
Block is connected, and for generating the first induced electricity capacitance, pressure sensitive layer module passes through second switch and third capacitive detection module phase
Even, for generating the second induced electricity capacitance, when first switch is closed, and second switch disconnects, the detection of third capacitive detection module
The first induced electricity capacitance C1 ' that capacitive sensing layer generates, when first switch disconnects, and second switch is closed, third capacitance detecting
Module is used to detect the second induced electricity capacitance C2 ' of pressure sensitive layer generation, and third capacitive detection module is by C1 ' and C2 ' it sends
To judgment module, judgment module calculates the variation delta C2 of the variation delta C1 and C2 ' of C1 ' first, and judges Δ C1 and Δ C2
Locating threshold interval, so that it is determined that being that conductor is normally touched close to induction, conductor, conductor firmly touches or insulator is exerted oneself
It touches.
It should be noted that capacitive sensing layer can also use single mutual capacitance in system provided in an embodiment of the present invention
Structure, when the capacitive sensing layer of capacitance sensor is mutual capacitance, structural schematic diagram as shown in figure 4, when using mutual capacitance structure,
The first fixed capacity is formed between emission electrode and receiving electrode in capacitive sensing layer.
It should be noted that the capacitive sensing layer of capacitance sensor can use in system provided in an embodiment of the present invention
The combination of multiple self-capacitances, as shown in figure 5, when capacitive sensing layer is multiple self-capacitance structures, the electrode of each self-capacitance structure
Plate forms fixed capacity with shielded layer respectively, and each fixed capacity needs individually detection, and multiple fixed capacities according to detection,
Obtain the first fixed capacity.Capacitor CF in figure is equivalent to the second fixed capacity C2 in single self-capacitance structure, and use is multiple
Sliding detection or touch coordinate detection may be implemented in the combination of self-capacitance；Capacitive sensing layer can also use the group of multiple mutual capacitance
It closes, as shown in fig. 6, when capacitive sensing layer is multiple mutual capacitance structures, the emission electrode and receiving electrode of each mutual capacitance structure
Between form fixed capacity, each fixed capacity needs individually detection, and according to the multiple fixed capacities that detected, and obtains the
One fixed capacity, the capacitor CF in figure is equivalent to the second fixed capacity C2 in single mutual capacitance structure, using multiple mutual capacitance
Combination may be implemented sliding detection or touch coordinate detection.
The embodiment of the invention provides a kind of capacitance determining method, this method can be applied in multiple systems platform, be held
Row main body can be the processor for operating in the detection unit of various mobile devices, the method flow diagram of the method such as Fig. 7 institute
Show, specifically include:
S201: when the capacitance sensor receives operational order, obtain that the capacitance sensor generates with it is described
The corresponding first induced electricity capacitance of operational order and the second induced electricity capacitance；
In method provided in an embodiment of the present invention, when capacitance sensor receives operational order, the electricity of capacitance sensor
Hold inductive layer and generate the first induced electricity capacitance, the pressure sensitive layer of capacitance sensor generates the second induced electricity capacitance, detection unit
Detect the first induced electricity capacitance and the second induced electricity capacitance.
S202: the first constant capacitance obtained by the first induced electricity capacitance and in advance calculates, and obtains first
Capacitance change, and the second constant capacitance obtained by the second induced electricity capacitance and in advance calculates, and obtains second
Capacitance change；
In method provided in an embodiment of the present invention, the first constant capacitance for obtaining by the first induced electricity capacitance and in advance into
Row calculates, and obtains first capacitor variable quantity, first capacitor variable quantity can be the first induced electricity capacitance and the first constant capacitance
Difference absolute value, the second constant capacitance obtained by the second induced electricity capacitance and in advance calculates, and obtains the second electricity
Hold variable quantity, second capacitance change can be the absolute of the difference of the second induced electricity capacitance and the second constant capacitance
Value.
S203: according to the first capacitor variable quantity and second capacitance change, determine that the capacitance sensor connects
The corresponding action type of the operational order is received, and exports control instruction corresponding with the action type, with execution and institute
State the corresponding operation of control instruction.
In method provided in an embodiment of the present invention, first capacitor variable quantity and first threshold are compared, by the second electricity
Hold variable quantity and second threshold is compared, according to comparison result, so that it is determined that action type corresponding with operational order, operation
Type can be that conductor is normally touched close to induction, conductor, conductor firmly touches and insulator firmly touches, and according to operation
Type, generates control instruction corresponding with action type, and different action types generates different control instructions, control instruction
It can be bright light mode, audio output etc..
Capacitance determining method provided in an embodiment of the present invention, when capacitance sensor receives operational order, capacitance sensing
The capacitive sensing layer of device generates the first induced electricity capacitance, and the pressure sensitive layer of capacitance sensor generates the second induced electricity capacitance, inspection
The for surveying unit and detecting the first induced electricity capacitance and the second induced electricity capacitance, and obtain by the first induced electricity capacitance and in advance
One constant capacitance is calculated, and first capacitor variable quantity is obtained, and second obtained by the second induced electricity capacitance and in advance
Constant capacitance is calculated, and the second capacitance change is obtained, and first capacitor variable quantity and first threshold are compared, by
Two capacitance changes and second threshold are compared, foundation comparison result, so that it is determined that action type corresponding with operational order,
Action type can be that conductor is normally touched close to induction, conductor, conductor firmly touches and insulator firmly touches, and foundation
Action type generates control instruction corresponding with action type, and different action types generates different control instructions, controls
Instruction can be bright light mode, audio output etc..Using capacitance determining method provided by the invention, by detecting capacitance sensor
Induced electricity capacitance, induced electricity capacitance is carried out capacitance change is calculated with the constant capacitance in advance obtained, according to electricity
Hold variable quantity, determines the action type of operation of capacitor inductor, avoid the erroneous judgement to touch screen, improve the man-machine friendship of touch screen
Mutually experience.
What the step S203 that embodiments of the present invention Fig. 7 is disclosed was related to, according to the first capacitor variable quantity and institute
The second capacitance change is stated, determines that the capacitance sensor receives the corresponding action type of the operational order, including following
Step:
The first capacitor variable quantity is compared with preset first threshold, obtains the first comparison result；
Second capacitance change is compared with preset second threshold, obtains the second comparison result；
According to first comparison result and second comparison result, determine that the capacitance sensor receives the behaviour
Make to instruct corresponding action type.
In method provided in an embodiment of the present invention, when first capacitor variable quantity is less than first threshold, and the change of the second capacitor
When change amount is less than second threshold, determining that capacitance sensor receives the corresponding action type of operational order is the close induction of conductor；
First capacitor variable quantity be greater than first threshold, and the second capacitance change be less than second threshold when, determine that capacitance sensor connects
Receiving the corresponding action type of operational order is that conductor normally touches；First capacitor variable quantity is greater than first threshold, and second
When capacitance change is greater than second threshold, determine that capacitance sensor receives the corresponding action type of operational order and exerts oneself for conductor
It touches；First capacitor variable quantity be less than first threshold, and the second capacitance change be greater than second threshold when, determine capacitance sensing
It is that insulator firmly touches that device, which receives the corresponding action type of operational order,.
The embodiment of the invention also provides a kind of storage medium, the storage medium includes the instruction of storage, wherein in institute
It states the equipment where controlling the storage medium when instruction operation and executes above-mentioned capacitance determining method.
The embodiment of the invention also provides a kind of electronic equipment, structural schematic diagram is as shown in figure 8, specifically include memory
301 and one perhaps more than one 302 one of them or more than one instruction of instruction 302 be stored in memory 301
In, and be configured to by one or more than one processor 303 execute the one or more instruction 302 carry out with
Lower operation:
When the capacitance sensor receives operational order, referring to the operation for the capacitance sensor generation is obtained
Enable corresponding first induced electricity capacitance and the second induced electricity capacitance；
The first constant capacitance obtained by the first induced electricity capacitance and in advance calculates, and obtains first capacitor and becomes
Change amount, and the second constant capacitance obtained by the second induced electricity capacitance and in advance calculates, and obtains the second capacitor and becomes
Change amount；
According to the first capacitor variable quantity and second capacitance change, determine that the capacitance sensor receives institute
The corresponding action type of operational order is stated, and exports control instruction corresponding with the action type, to execute and the control
Instruct corresponding operation.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For device class embodiment, since it is basically similar to the method embodiment, so being described relatively simple, related place ginseng
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each unit can be realized in the same or multiple software and or hardware when invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
It realizes by means of software and necessary general hardware platform.Based on this understanding, technical solution of the present invention essence
On in other words the part that contributes to existing technology can be embodied in the form of software products, the computer software product
It can store in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes the certain of each embodiment or embodiment of the invention
Method described in part.
A kind of capacitive detection system provided by the present invention and method are described in detail above, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention；At the same time, for those skilled in the art, according to the thought of the present invention, specific
There will be changes in embodiment and application range, in conclusion the content of the present specification should not be construed as to of the invention
Limitation.
Claims (8)
1. a kind of capacitive detection system characterized by comprising
Capacitance sensor and detection unit；
The capacitance sensor is connected with the detection unit；
The capacitance sensor, for generating the first induced electricity corresponding with the operational order when receiving operational order
Capacitance and the second induced electricity capacitance；
The detection unit, for detecting the first induced electricity capacitance and the second induced electricity capacitance, and by described first
Induced electricity capacitance and the first constant capacitance obtained in advance are calculated, and obtain first capacitor variable quantity, described second is felt
The second constant capacitance answering capacitance and obtaining in advance is calculated, and the second capacitance change is obtained, according to first electricity
Hold variable quantity and second capacitance change, determines action type corresponding with the operational order, and export and the behaviour
Make the corresponding control instruction of type.
2. system according to claim 1, which is characterized in that the capacitance sensor, comprising:
Cover sheet, capacitive sensing layer, insulating layer, shielded layer, buffer layer and the pressure sensitive layer successively arranged；
The cover sheet, for protecting the capacitive sensing layer, the insulating layer, the shielded layer, the buffer layer and institute
State pressure sensitive layer；
The capacitive sensing layer is located at the downside of the cover sheet, for judging whether the capacitive sensing layer is self-capacitance knot
It is fixed to form first if the capacitive sensing layer is self-capacitance structure for structure between the capacitive sensing layer and the shielded layer
Capacitor, if the capacitive sensing layer is not self-capacitance structure, emission electrode and receiving electrode in the capacitive sensing layer it
Between form the first fixed capacity, when receiving the operational order, according to first fixed capacity, generate and the operation
Instruct corresponding first inductance capacitance；
The insulating layer is located on the downside of the capacitive sensing layer, for by the capacitive sensing layer be systematically isolated；
The shielded layer is located on the downside of the insulating layer, for capacitive sensing layer and the pressure sensitive layer described in electrical isolation；
The buffer layer between the shielded layer and the pressure sensitive layer, for the shielded layer and with the pressure
Spacing is formed between inductive layer, and when receiving operational order, change between the shielded layer and the pressure sensitive layer
Spacing；
The pressure sensitive layer is sent out for forming second inductance capacitance between the shielded layer, and in the buffer layer
After raw deformation, the second induced electricity capacitance is generated.
3. system according to claim 2, which is characterized in that the capacitance sensor, further includes:
Substrate；
The substrate is located on the downside of the pressure sensitive layer, the cover sheet, the electricity being used to support in the capacitive sensing device
Hold inductive layer, insulating layer, shielded layer, buffer layer and pressure sensitive layer.
4. system according to claim 1, which is characterized in that the detection unit, comprising:
Capacitance detecting group, shroud module, judgment module and output module；
The first end of the capacitance detecting group is connected with the capacitive sensing layer of the capacitance sensor and pressure sensitive layer respectively,
For detecting the first induced electricity capacitance and the second induced electricity capacitance, and by the first induced electricity capacitance and described
Two induced electricity capacitances are sent to the judgment module；
The shroud module is connected with the shielded layer of the capacitance sensor, for providing to the shielded layer of the capacitance sensor
Screen potential；
The first end of the judgment module is connected with the second end of the capacitance detecting group, is used for the first induced electricity capacitance
The first constant capacitance obtained in advance is calculated, and obtains first capacitor variable quantity, and by the second induced electricity capacitance
The second constant capacitance obtained in advance is calculated, and obtains the second capacitance change, and change according to the first capacitor
Amount and second capacitance change determine action type corresponding with the operational order, and the action type are sent
To the output module；
The output module is connected with the second end of the judgment module, for generating and the behaviour according to the action type
Make the corresponding control instruction of type, and exports the control instruction.
5. system according to claim 4, which is characterized in that the capacitance detecting group includes:
First capacitor detection module and the second capacitive detection module；
The first end of the first capacitor detection module is connected with the capacitive sensing layer, second end and the judgment module phase
Even, for detecting the first induced electricity capacitance；
The first end of second capacitive detection module is connected with the pressure sensitive layer, second end and the judgment module phase
Even, for detecting the second induced electricity capacitance.
6. system according to claim 4, which is characterized in that the capacitance detecting group includes:
First switch, second switch, time-sequence control module and third capacitive detection module；
The first end of the first switch is connected with the capacitive sensing layer, second end and the third capacitive detection module
First end is connected；
The first end of the second switch is connected with the pressure sensitive layer, second end and the third capacitive detection module
First end is connected；
One end of the time-sequence control module is connected with the third end of the first switch, the other end and the second switch
Third end is connected, for controlling the on-off of the first switch and the second switch；
The second end of the third capacitive detection module is connected with the judgment module.
7. a kind of capacitance determining method characterized by comprising the capacitance determining method is suitable for described in any one of 1-6
Capacitive detection system, which comprises
When the capacitance sensor receives operational order, it is generating with the operational order pair to obtain the capacitance sensor
The the first induced electricity capacitance and the second induced electricity capacitance answered；
The first constant capacitance obtained by the first induced electricity capacitance and in advance calculates, and obtains first capacitor variation
Amount, and the second constant capacitance obtained by the second induced electricity capacitance and in advance calculates, the second capacitance variations of acquisition
Amount；
According to the first capacitor variable quantity and second capacitance change, determine that the capacitance sensor receives the behaviour
Make to instruct corresponding action type, and export control instruction corresponding with the action type, to execute and the control instruction
Corresponding operation.
8. the method according to the description of claim 7 is characterized in that described according to the first capacitor variable quantity and described second
Capacitance change determines that the capacitance sensor receives the corresponding action type of the operational order, comprising:
The first capacitor variable quantity is compared with preset first threshold, obtains the first comparison result；
Second capacitance change is compared with preset second threshold, obtains the second comparison result；
According to first comparison result and second comparison result, determine that the capacitance sensor receives the operation and refers to
Enable corresponding action type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409216.6A CN110134281B (en) | 2019-05-16 | 2019-05-16 | Capacitance detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409216.6A CN110134281B (en) | 2019-05-16 | 2019-05-16 | Capacitance detection system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110134281A true CN110134281A (en) | 2019-08-16 |
| CN110134281B CN110134281B (en) | 2022-09-16 |
Family
ID=67574814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910409216.6A Active CN110134281B (en) | 2019-05-16 | 2019-05-16 | Capacitance detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110134281B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014648A (en) * | 2020-08-10 | 2020-12-01 | 南京天易合芯电子有限公司 | Capacitance detection method capable of detecting single-side capacitance |
| CN113054984A (en) * | 2021-05-20 | 2021-06-29 | 上海艾为微电子技术有限公司 | Pressure-sensitive detection circuit, chip, system and pressure-sensitive detection method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153349U (en) * | 2011-06-15 | 2012-02-29 | 比亚迪股份有限公司 | Positioning device and touch control system used for capacitance touch screen |
| CN104281340A (en) * | 2013-07-12 | 2015-01-14 | 天津富纳源创科技有限公司 | Touch screen touch recognition method |
| CN104346000A (en) * | 2013-07-25 | 2015-02-11 | 天津富纳源创科技有限公司 | Touch identification method |
| CN104423740A (en) * | 2013-08-30 | 2015-03-18 | 天津富纳源创科技有限公司 | Capacitive touch device based sensing method |
| CN106020558A (en) * | 2016-06-22 | 2016-10-12 | 芯海科技（深圳）股份有限公司 | Composite touch control key and control method |
| CN106104441A (en) * | 2016-06-16 | 2016-11-09 | 深圳市汇顶科技股份有限公司 | Touch sensor, touch detecting apparatus and detection method, touch control device |
| CN106293222A (en) * | 2016-08-08 | 2017-01-04 | 武汉华星光电技术有限公司 | Display screen and display |
| CN106325623A (en) * | 2015-06-26 | 2017-01-11 | 小米科技有限责任公司 | Method and apparatus for monitoring touch on touch screen and terminal device |
| CN106383607A (en) * | 2016-08-31 | 2017-02-08 | 宸盛光电有限公司 | Touch display system with pressure sensing function |
| US20170060329A1 (en) * | 2013-07-29 | 2017-03-02 | Hideep Inc. | Touch sensor panel, touch detection device and touch input device comprising same |
| CN106569635A (en) * | 2016-10-31 | 2017-04-19 | 努比亚技术有限公司 | Terminal suspension combination operation device and method thereof |
| US20180284925A1 (en) * | 2017-03-29 | 2018-10-04 | Hideep Inc. | Touch input device and method for measuring capacitance of the same |
| CN109313519A (en) * | 2016-08-03 | 2019-02-05 | 三星电子株式会社 | Electronic equipment including force snesor |
-
2019
- 2019-05-16 CN CN201910409216.6A patent/CN110134281B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153349U (en) * | 2011-06-15 | 2012-02-29 | 比亚迪股份有限公司 | Positioning device and touch control system used for capacitance touch screen |
| CN104281340A (en) * | 2013-07-12 | 2015-01-14 | 天津富纳源创科技有限公司 | Touch screen touch recognition method |
| CN104346000A (en) * | 2013-07-25 | 2015-02-11 | 天津富纳源创科技有限公司 | Touch identification method |
| US20170060329A1 (en) * | 2013-07-29 | 2017-03-02 | Hideep Inc. | Touch sensor panel, touch detection device and touch input device comprising same |
| CN104423740A (en) * | 2013-08-30 | 2015-03-18 | 天津富纳源创科技有限公司 | Capacitive touch device based sensing method |
| CN106325623A (en) * | 2015-06-26 | 2017-01-11 | 小米科技有限责任公司 | Method and apparatus for monitoring touch on touch screen and terminal device |
| CN106104441A (en) * | 2016-06-16 | 2016-11-09 | 深圳市汇顶科技股份有限公司 | Touch sensor, touch detecting apparatus and detection method, touch control device |
| CN106020558A (en) * | 2016-06-22 | 2016-10-12 | 芯海科技（深圳）股份有限公司 | Composite touch control key and control method |
| CN109313519A (en) * | 2016-08-03 | 2019-02-05 | 三星电子株式会社 | Electronic equipment including force snesor |
| CN106293222A (en) * | 2016-08-08 | 2017-01-04 | 武汉华星光电技术有限公司 | Display screen and display |
| CN106383607A (en) * | 2016-08-31 | 2017-02-08 | 宸盛光电有限公司 | Touch display system with pressure sensing function |
| CN106569635A (en) * | 2016-10-31 | 2017-04-19 | 努比亚技术有限公司 | Terminal suspension combination operation device and method thereof |
| US20180284925A1 (en) * | 2017-03-29 | 2018-10-04 | Hideep Inc. | Touch input device and method for measuring capacitance of the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014648A (en) * | 2020-08-10 | 2020-12-01 | 南京天易合芯电子有限公司 | Capacitance detection method capable of detecting single-side capacitance |
| CN112014648B (en) * | 2020-08-10 | 2023-04-28 | 南京天易合芯电子有限公司 | Capacitance detection method capable of detecting single-side capacitance |
| CN113054984A (en) * | 2021-05-20 | 2021-06-29 | 上海艾为微电子技术有限公司 | Pressure-sensitive detection circuit, chip, system and pressure-sensitive detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110134281B (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9547399B2 (en) | Injected touch noise analysis | |
| CN104049777B (en) | For the channel aggregation of optimal stylus detection | |
| CN100538292C (en) | The touch of Aristogrid detects | |
| US20160291797A1 (en) | Use of random sampling technique to reduce finger-coupled noise | |
| TWI474248B (en) | Method and device for sensing control point on capacitive-type panel | |
| US20150070297A1 (en) | Control method for touch panel | |
| KR20160025440A (en) | Touch penel and coordinate indicating system having the same | |
| CN102667398A (en) | Flexible capacitive sensor array | |
| US20160026295A1 (en) | Generating a baseline compensation signal based on a capacitive circuit | |
| TW201203065A (en) | Noise cancellation technique for capacitive touchscreen controller using differential sensing | |
| TW201044241A (en) | Two-dimensional position sensor | |
| CN102707861B (en) | Electronic equipment and display method thereof | |
| KR20100062217A (en) | Multi touch sensing circuit | |
| US11281329B2 (en) | Device for detecting touch | |
| CN103294381A (en) | Electronic device and volume adjustment method thereof | |
| CN110134281A (en) | Capacitive detection system and method | |
| CN105389038A (en) | Method of scanning touch panel and touch integrated circuit for performing same | |
| CN208298157U (en) | A kind of combined type touch control panel and touch device | |
| TW201232368A (en) | Testing device for touch panel and capacitance-measure module | |
| CN103294289A (en) | Capacitive touch system and method with automatic correction function | |
| TWI543050B (en) | Touch sensing and feedback apparatuses and methods | |
| WO2019118478A1 (en) | Touch force detection for a touch system | |
| CN109643191A (en) | Detection method of touch and touch detection device | |
| US20070226383A1 (en) | Touch sensing apparatus | |
| CN104699345A (en) | Capacitive touch display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |