CN107045401A - It is a kind of embedded from appearance touch control display apparatus and water detection method - Google Patents
It is a kind of embedded from appearance touch control display apparatus and water detection method Download PDFInfo
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- CN107045401A CN107045401A CN201610084026.8A CN201610084026A CN107045401A CN 107045401 A CN107045401 A CN 107045401A CN 201610084026 A CN201610084026 A CN 201610084026A CN 107045401 A CN107045401 A CN 107045401A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
It is embedded from appearance touch control display apparatus water detection method and detection means the invention discloses one kind, wherein, water detection method includes：Multigroup subchannel that all row of channels of full screen are divided is scanned, an at least row of channels is included per component passage, a scan period of scanning includes normal touch-control scanning frame and water detection scanning frame；Contrast capacitance of the subchannel in capacitance and water the detection scanning frame of normal touch-control scanning frame；When the difference of capacitance and the capacitance in normal touch-control scanning frame in the water detection scanning frame of subchannel is more than predetermined value, subchannel is the subchannel being covered with water, otherwise, and subchannel is without aquaporin；The capacitance value data of subchannel to being covered with water is handled；Normal touch-control scanning frame is the scanning carried out to subchannel, and water detection scanning frame is the scanning carried out after odd number (or even number) subchannel is grounded to other subchannels.Scanning frame is detected by increasing water, the degree of accuracy operated with water is improved.
Description
Technical field
It is more particularly to a kind of embedded aobvious from touch-control is held the present invention relates to touch-screen control field
Showing device and water detection method.
Background technology
Due to detection be each passage direct-to-ground capacitance of itself from screen is held, thus be to isolated water will not
There is any touch variable quantity, even if screen other places are touched when having water to be had an impact, such as
Shown in Fig. 1 and Fig. 2, in existing scanning, there are two scanning frames in a scan period,
But when having water droplet from appearance screen, it is impossible to the position of water droplet is detected, but finger is touched on the water
When touching, the water connected with finger can form an equipotential surface so that touch-control area is than real hand
Refer to big, reduction control precision.
The content of the invention
It is embedded from appearance touch control display apparatus and water detection side it is an object of the invention to provide one kind
Method, improves the accuracy operated with water.
In order to solve the above technical problems, embedded from appearance touch-control the embodiments of the invention provide one kind
Display device water detection method, including：
All row of channels of full screen are divided into multigroup subchannel, carrying out touch-control to the subchannel sweeps
Retouch, subchannel described in every group includes an at least row of channels, each scan period includes normal touch-control
Scanning frame and water detection scanning frame；
The normal touch-control scanning frame and water detection scanning frame are set with touch-control benchmark respectively
Value, the normal touch-control scanning frame data and water inspection that relatively more each scan period collects
Survey the variable quantity of the scanning relatively respective setting touch a reference value of frame data；Under normal touch state,
The change of normal touch-control scanning frame data and water the detection scanning relatively respective touch-control a reference value of frame data
Amount is all higher than threshold value；In the presence of under isolated water droplet state, the normal touch-control for the subchannel being covered with water
Scanning frame data, the variable quantity of the generation of setting touch a reference value has been less than water detection scanning frame relatively
The data variable quantity that setting touch a reference value is produced relatively；
Capacitance value data to the subchannel being covered with water is handled, and removes water droplet to institute
State the interference of the capacitance for the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is that the touch-control that all subchannels are carried out is swept
Retouch, the water detection scanning frame is the interval scan carried out to the subchannel, i.e. arbitrary neighborhood
Two subchannels in, the subchannel carries out normal touch-control scanning, another institute
State subchannel ground connection.
Wherein, each scan period includes two normal touch-control scanning frames and an institute
State water detection scanning frame.
Wherein, each scan period is to enter again after the completion of two normal touch-control scanning frames
The water detection scanning frame of row one.
Wherein, the water detects scanning frame between two normal touch-control scanning frames.
Wherein, at least one described water detection scanning frame is swept positioned at the two neighboring normal touch-control
Retouch between frame.
Wherein, each scan period also includes secondary water detection scanning frame, the secondary water
Detect that the subchannel that scanning frame is closed detects that the normal touch-control of scanning frame is scanned for first time water
Passage.
Wherein, water detection scanning frame is to odd number subchannel after even number subchannel inner ground
The scanning of progress, the secondary water scanning frame is logical to the even number point after odd number subchannel is grounded
The scanning that road is carried out.
Wherein, the row of channels quantity of multigroup subchannel is equal.
In addition, the embodiment of the present invention additionally provides a kind of embedded from appearance touch-control display dress
Put, including：
Scan module, the scan module is used to be scanned the subchannel for specifying screen, and one
The individual scan period includes normal touch-control scanning frame and water detection scanning frame；
Data analysis module, normal touch-control scanning frame and the water detection scanning frame is set respectively
Surely there is touch-control a reference value, it is normal that data analysis module more each scan period collects
Touch-control scans the change of frame data and the water detection scanning relatively respective setting touch a reference value of frame data
Amount；Under normal touch state, normal touch-control scanning frame data and water detection scanning frame data are relative
The variable quantity of respective touch-control a reference value is all higher than threshold value；In the presence of under isolated water droplet state, covered by water
The normal touch-control scanning frame data change of the generation of setting touch a reference value relatively of the subchannel of lid
Change amount is less than water and detects the scanning frame data variable quantity that setting touch a reference value is produced relatively；Institute
State data analysis module to handle the capacitance value data of the subchannel being covered with water, go
Interference except water droplet to the capacitance of the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is the scanning carried out to all subchannels, institute
It is the interval scan carried out to the subchannel, i.e. the two of arbitrary neighborhood to state water detection scanning frame
In the subchannel, a subchannel carries out normal touch-control scanning, and another described point logical
Road is grounded.
Wherein, in addition to scan control module, the scan control module is used to distribute described point
The closure and unlatching of the quantity for the row of channels that passage is included and the corresponding subchannel of control.
It is embedded from appearance touch control display apparatus and water detection side that the embodiment of the present invention is provided
Method, compared with prior art, with advantages below:
It is described embedded from touch control display apparatus and water detection method is held, by normally sweeping
Retouch and water detection scanning frame is added in the cycle, allow a part of subchannel to be grounded it during water detection scanning frame
Afterwards, realize to effective detection of another part passage to water, it is front and rear by contrasting subchannel ground connection
The change of capacitance, judges that subchannel is no to there is water state.Detect that scanning frame is obtained by water
Accurately there is water state, then data are post-processed again, to improve with the accurate of water operation
Degree.
In summary, it is provided in an embodiment of the present invention embedded from appearance touch control display apparatus and water
Detection method, detects scanning frame by increasing water, improves the degree of accuracy operated with water.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, show and
Easy insight, drawings in the following description are some embodiments of the present invention, common for this area
, on the premise of not paying creative work, can also be according to these accompanying drawings for technical staff
Obtain other accompanying drawings.
Fig. 1 is that touch-control of the prior art shows sweep waveform schematic diagram；
Fig. 2 for it is of the prior art have water droplet when touch-control scan when part row of channels capacitance
List；
Fig. 3 be the embodiment of the present invention in two neighboring passage on there is circuit structure during water droplet to show
It is intended to；
Fig. 4 illustrates to enter the equivalent circuit of subchannel during water-filling detection in the embodiment of the present invention
Figure；
The embedded appearance touch control display apparatus water detection side certainly that Fig. 5 is provided by the embodiment of the present invention
Touch-control in method shows sweep waveform schematic diagram；
Fig. 6 is embedded from appearance touch control display apparatus water detection side for what is provided in the embodiment of the present invention
The capacitance of passage portion in method in a water detection scanning；
The embedded appearance touch control display apparatus water detection side certainly that Fig. 7 is provided by the embodiment of the present invention
A kind of step schematic flow sheet of embodiment of method；
The embedded appearance touch control display apparatus water detection side certainly that Fig. 8 is provided by the embodiment of the present invention
A certain single pass capacitance data figure in method during normal touch；
The embedded appearance touch control display apparatus water detection side certainly that Fig. 9 is provided by the embodiment of the present invention
There is a certain single pass capacitance data figure during water droplet in method；
The embedded part from appearance touch control display apparatus that Figure 10 is provided by the embodiment of the present invention
Connection diagram；
The embedded work from appearance touch control display apparatus that Figure 11 is provided by the embodiment of the present invention
Shown in the step flow chart of pattern；
The embedded appearance touch control display apparatus certainly that Figure 12 is provided by the embodiment of the present invention uses soft
Part carries out the logic step schematic diagram of water droplet processing：
The embedded touch control display apparatus that holds certainly that Figure 13 is provided by the embodiment of the present invention is being used
Software is removed the step schematic diagram of water droplet interference；
The embedded touch control display apparatus that holds certainly that Figure 14 is provided by multiple embodiment of the present invention exists
Another position relationship schematic diagram on screen；
The embedded touch control display apparatus that holds certainly that Figure 15 is provided by multiple embodiment of the present invention exists
Another position relationship schematic diagram on screen.
Embodiment
Just as described in the background section, in the prior art embedded self-capacitance screen due to detection
It is each passage direct-to-ground capacitance of itself, therefore is not have any touch variable quantity to isolated water,
Even if screen other places are touched when having water to be had an impact, but finger when touching on the water, with
The water of finger connection can form an equipotential surface so that touch-control area is bigger than real finger,
Reduction control precision.
It is embedded from the water inspection of appearance touch control display apparatus the embodiments of the invention provide one kind based on this
Survey method, including：
All row of channels of full screen are divided into multigroup subchannel, carrying out touch-control to the subchannel sweeps
Retouch, subchannel described in every group includes an at least row of channels, each scan period includes normal touch-control
Scanning frame and water detection scanning frame；
The normal touch-control scanning frame and water detection scanning frame are set with touch-control benchmark respectively
Value, the normal touch-control scanning frame data and water inspection that relatively more each scan period collects
Survey the variable quantity of the scanning relatively respective setting touch a reference value of frame data；Under normal touch state,
The change of normal touch-control scanning frame data and water the detection scanning relatively respective touch-control a reference value of frame data
Amount is all higher than threshold value；In the presence of under isolated water droplet state, the normal touch-control for the subchannel being covered with water
Scanning frame data, the variable quantity of the generation of setting touch a reference value has been less than water detection scanning frame relatively
The data variable quantity that setting touch a reference value is produced relatively；
Capacitance value data to the subchannel being covered with water is handled, and removes water droplet to institute
State the interference of the capacitance for the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is that the touch-control that all subchannels are carried out is swept
Retouch, the water detection scanning frame is the interval scan carried out to the subchannel, i.e. arbitrary neighborhood
Two subchannels in, the subchannel carries out normal touch-control scanning, another institute
State subchannel ground connection.
It is in addition, embedded from appearance touch control display apparatus the embodiments of the invention provide one kind,
Including：
Scan module, scan module is used to be scanned the subchannel for specifying screen, and one is swept
Retouching the cycle includes normal touch-control scanning frame and water detection scanning frame；
Data analysis module, normal touch-control scanning frame and water detection scanning frame is set with touch-control respectively
A reference value, the normal touch-control scanning frame number that data analysis module more each scan period collects
According to the variable quantity that the scanning relatively respective setting touch a reference value of frame data is detected with water；Normal touch
Under state, normal touch-control scanning frame data and water the detection scanning relatively respective touch-control benchmark of frame data
The variable quantity of value is all higher than threshold value；In the presence of under isolated water droplet state, the subchannel being covered with water
Normal touch-control scanning frame data relatively less than water examined by the variable quantity of the generation of setting touch a reference value
Survey the scanning frame data variable quantity that setting touch a reference value is produced relatively；Data analysis module pair
The capacitance value data of the subchannel being covered with water is handled, and removes water droplet to being covered with water
Subchannel capacitance interference；
Wherein, the normal touch-control scanning frame is the scanning carried out to all subchannels, institute
It is the interval scan carried out to the subchannel, i.e. the two of arbitrary neighborhood to state water detection scanning frame
In the subchannel, a subchannel carries out normal touch-control scanning, another subchannel ground connection.
It should be noted that the water detection scanning frame in the embodiment of the present invention can be part point
The scanning carried out after passage ground connection to other subchannels, specifically refers to odd number subchannel shorted to earth
Afterwards, what dual numbers subchannel was realized has water detection；Or after even number subchannel shorted to earth,
There is water detection to what odd number subchannel was realized.
As shown in figure 3, passage SX1 itself direct-to-ground capacitance is C1, passage SX2 is over the ground
Electric capacity is C2, when there is water droplet between passage SX1 and SX2, water droplet in passage SX1 and
The electric capacity of passage SX2 formation is C3, then by passage SX2 shorted to earths, as shown in figure 4,
After passage SX2 shorted to earths, passage SX1 equivalent capacity CeqEqual to electric capacity C2And C3
After series connection again with electric capacity C1Carry out the capacitance after parallel connection.It can be found that equivalent capacity is substantially big
In passage SX1 itself direct-to-ground capacitance, therefore can normally it touched by contrasting passage SX1
Pair after the direct-to-ground capacitance and passage SX2 shorted to earths of control scanning after SX1 waterproof scanning
Ground electric capacity, when there is water to cover the situation of more than two neighboring passage, the passage of opening passes through
Water is jumped on the passage of ground connection, then equivalent to introduce extra electric capacity, causes scan channel
Total equivalent direct-to-ground capacitance value is changed, and detects that this kind changes by scanning, realization pair
The detection of water, subsequently through software processing, is such as carried out at data using Firmware software algorithms
Reason, filters out the data beyond threshold value, judges there is water on the corresponding passage of the data, and be directed to
The method for computing data that the subchannel being covered with water is used can avoid the water formation equipotentiality that finger is connected
Cause touch-control area bigger than real finger behind face, the reduction control precision problem of generation.I.e.
This programme can reduce or eliminate influence of the water droplet to touch accuracy, improve the accuracy operated with water,
Realize on the premise of screen has water droplet, realize the accurate touch-control to screen.
In scanning process, due to Source lines (signal electrode line) and Gate lines (scanning electricity
Polar curve) same pumping signal can be transmitted simultaneously, can eliminate with show electrode and common electrical
Pole (abbreviation Vcom) produce coupled capacitor, so as to improve the accuracy of scanning.
In summary, it is provided in an embodiment of the present invention embedded from appearance touch control display apparatus and water
Detection method, scanning frame, water detection scanning are detected by adding water in the normal scan period
Allow after a part of subchannel ground connection, realized to effective detection of another part passage to water during frame,
By contrasting the change of capacitance before and after subchannel ground connection, judge that subchannel is no to there is water state.
Detect that scanning frame acquisition accurately has water state by water, then data post-processed again,
To improve the degree of accuracy operated with water.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, tie below
Accompanying drawing is closed to be described in detail the embodiment of the present invention.
Detail is elaborated in the following description to fully understand the present invention.But this hair
Bright to be implemented with a variety of different from other manner described here, those skilled in the art can
To do similar popularization in the case of without prejudice to intension of the present invention.Therefore the present invention is not by following public affairs
The limitation for the specific implementation opened.
Refer to Fig. 5,6,7, Fig. 5 by the embodiment of the present invention provide it is embedded from hold touch
The touch-control controlled in display device water detection method shows sweep waveform schematic diagram；Fig. 6 is the present invention
In a water detection in the embedded touch control display apparatus water detection method from appearance provided in embodiment
The capacitance of passage portion during scanning；Fig. 7 by the embodiment of the present invention provide it is embedded from
Hold a kind of step schematic flow sheet of embodiment of touch control display apparatus water detection method.
Wherein, Fig. 5 is in a scan period, to include two normal touch-control scanning frames and one
Individual water detects scanning frame, and the scan period is identical with a scan period of the prior art,
And the scanning duration of each normal touch-control scanning frame and water detection scanning frame can also be equal.
From fig. 6, it can be seen that be expert at Chx08, Chx10, Chx12 Chy10, Chy11,
The capacitance of Chy12 and Chy13 12 positions is significantly greater than the capacitance of other positions,
And because the capacitance of each minimum unit of other positions is of substantially equal, it is known that it is due to that external cause makes
Obtain the capacitance at this few position on screen and occur hair change, be due to most possibly these
Position is due to existing water droplet, and to become big amplitude different for the capacitance at different position
The reason for be water droplet in this place thickness it is different, even if detecting in this way lonely on screen
The presence of vertical water droplet.
In a kind of concrete mode, as shown in fig. 7, described embedded from appearance touch control display apparatus
Water detection method, including：
Step 10, all row of channels of full screen are divided into multigroup subchannel, the subchannel is entered
Row touch-control is scanned, and subchannel described in every group includes an at least row of channels, and each scan period includes
Normal touch-control scanning frame and water detection scanning frame；
Step 20, normal touch-control scanning frame and the water detection scanning frame is set with tactile respectively
A reference value is controlled, the normal touch-control scanning frame data and institute that relatively more each scan period collects
State the variable quantity of the water detection scanning relatively respective setting touch a reference value of frame data；Normal touch shape
Under state, normal touch-control scanning frame data and water the detection scanning relatively respective touch-control a reference value of frame data
Variable quantity be all higher than threshold value；In the presence of under isolated water droplet state, the subchannel being covered with water is just
The variable quantity of the generation of setting touch a reference value has been detected normal touch-control scanning frame data less than water relatively
Scan the frame data variable quantity that setting touch a reference value is produced relatively；
Step 30, the capacitance value data to the subchannel being covered with water is handled, and is removed
Interference of the water droplet to the capacitance of the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is that the touch-control that all subchannels are carried out is swept
Retouch, the water detection scanning frame is the interval scan carried out to the subchannel, i.e. arbitrary neighborhood
Two subchannels in, the subchannel carries out normal touch-control scanning, another institute
State subchannel ground connection.
It is described embedded from touch control display apparatus water detection method is held, by normal scanning week
Interim addition water detection scanning frame, water is allowed when detecting scanning frame after portion of channel ground connection, real
Now to effective detection of another part passage to water.Detect that scanning frame acquisition accurately has by water
Then data are post-processed by water state again, to improve the degree of accuracy operated with water.
It should be noted that in the present invention, water droplet can be that a subchannel is completely covered,
Can also be the part for covering subchannel, and when simply covering the small part of subchannel,
Even if with water operation, the effect of actual influence is also very limited, therefore can typically set one
When the change of the capacitance of threshold value, i.e. subchannel is more than threshold value, illustrate that the operation of band water is touched to normal
The influence of control is larger, otherwise, can be ignored, and the present invention is not limited this threshold value,
It can be set according to the touch-control accuracy of different screens.
The scan frequency of the present invention preferentially uses the conventional frequency 60Hz of current electronic equipment, one
Increase water detection scanning frame in the individual scan period and do not interfere with report point rate.But the present invention is applicable
In any frequency.It should be noted that：The duration of water detection scanning frame can not be too short, otherwise, just
Water detection can not be completed to all subchannels to scan, and a cycle reclaimed water detection scanning frame
Duration can not be oversize, otherwise, and the duration of normal touch-control scanning frame is just relative to shorten, and influences
A report point rate, and the scanning of normal touch-control is scanned to all subchannels is main to touch-control
The scanning of progress, therefore normal touch-control scanning is extremely important, it is therefore desirable to obtain enough data
And data processing time causes the touch-control to become accurate.The a cycle bag of the general scanning
Include two normal touch-control scanning frames and a water detection scanning frame.It should be noted that
The present invention is not limited the quantity of the scanning frame in a cycle of the scanning, anti-to ensure
It is accurate that the accurate and normal touch-control of water detection is scanned, and a cycle of scanning includes three and swept
Frame, two normal touch-control scanning frames and a water detection scanning frame are retouched, each scanning frame
Duration can be with identical, can also be different, but in order to which the intractability and reduction that reduce data are swept
The difficulty retouched, therefore the duration of each scanning frame is identical.
The embedded decision logic from the water detection for holding touch control display apparatus water detection method
It is as follows：
Two normal touch-control scanning frames and a water detection scanning frame are included with a scan period
Exemplified by illustrate water detection decision logic：Two normal touch-control scanning frames are designated as A frames respectively
With B frames, water detection scanning frame is designated as C frames：A, B, C frame have independent touch-control benchmark
It is worth (Baseline), is designated as BaseA, BaseB, BaseC.The original that each frame scan is gathered back
Beginning data (Rawdata) are designated as RawA, RawB, RawC respectively, by respective Rawdata
Compare with Baseline, then can draw the variable quantity (Diff) scanned each time, and will change
Amount is labeled as DiffA, DiifB, DiffC.
When normal touch, that is, when having conductor such as finger touch, DiffA, DiffB and DiffC
The variable quantity more than threshold value can be produced, as shown in Figure 8.And variation characteristic is caused by water droplet
The DiffA and DiffB for the subchannel being covered with water are substantially unchanged, and DiffC but has obvious change
Change, as shown in Figure 9.
Wherein, the touch-control a reference value and threshold value that A, B, C frame are used can with it is identical can not also phase
Together.
There was only normal touch-control scanning frame and water detection scanning frame in one scan period, can only pass through
The change of the capacitance of contrast one subchannel of acquisition, and the electric capacity of another adjacent subchannel
The change of value still can not be obtained, and to improve the accuracy of detection to the water droplet on screen, improve band
The accuracy of water operation, a cycle of the scanning also includes secondary water and detects scanning frame, two
The subchannel that secondary water detection scanning frame is closed detects the normal touch-control of scanning frame for first time water
Scan channel, i.e., general water detection scanning frame detects the opening and closing of scanning frame with secondary water
Passage contrast.Water detection scanning frame is dual numbers point after odd number subchannel ground connection as shown
The scanning that passage is carried out.Then the secondary water detection scanning frame is to strange after even number subchannel is grounded
The scanning that number subchannel is carried out.So, in a scan period, odd number subchannel and even number
Subchannel is to scan twice in three scanning frames, all, and shorted to earth once, improves water detection
The degree of accuracy.
The line number that multiple subchannels can contemplate each subchannel is different, but before effective water detection
It is that water droplet must be covered in above the passage of at least one normal touch-control scanning and ground connection to carry, so
Interlace mode preferentially is used, the smaller water droplet of diameter can be detected as far as possible.
If the quantity of the row of channels included in the subchannel is more, and water droplet is smaller, then
Even if water detection scanning frame is added during being scanned, when normal touch-control scanning and waterproof scanning
The change of the capacitance of subchannel is not obvious, and differentiation difficulty is larger, or even cannot distinguish between, therefore
To improve the precision of scanning, improve and one is only included in the accuracy operated with water, the subchannel
Bar row of channels.
And the position relationship of scanning frame and normal touch-control scanning frame is detected for water, general each institute
The scan period is stated to carry out a water detection after the completion of two normal touch-control scanning frames again
Scanning frame or the water detect scanning frame between two normal touch-control scanning frames,
So enable to report point uniform, it is to avoid to be connected to the white space between two display frames, should
White space is referred to as blank frame.
, can be at continuous two if in a scan period, scanning frame is detected comprising multiple water
There is no water to detect scanning frame or at least one described water inspection between normal touch-control scanning frame
Scanning frame is surveyed to be located between the two neighboring normal touch-control scanning frame.
In order to reduce operand, scan operation efficiency, the row of channels of multigroup subchannel are improved
Quantity is equal.
It should be noted that the quantity of row of channels of the present invention to being included in the subchannel is not done
Specific to limit, if the width of row of channels is very small, row is logical in increase subchannel that can be appropriate
The quantity in road, further, it is also possible to using first many rear few scan modes, i.e., first use subchannel
In scan subchannel comprising the more mode of row of channels number, first find the position of water droplet presence,
Then the row of channels number in subchannel is reduced again, to the subchannel of the presence water droplet found
Fine scanning is carried out, follow-up data processing is then carried out, to improve the accuracy detected to water,
Improve the accuracy operated with water.
In addition, the embodiment of the present invention additionally provides a kind of embedded from appearance touch-control display dress
Put, as shown in Figure 10, including：
Scan module 10,10 pieces of the scanning mould is used to sweep the subchannel for specifying screen
Retouch, a scan period includes normal touch-control scanning frame and water detection scanning frame；
Data analysis module 20, normal touch-control scanning frame and the water detection scanning frame difference
Touch-control a reference value is set with, the data analysis module 20 compares what each scan period collected
Normal touch-control scanning frame data and water the detection scanning relatively respective setting touch a reference value of frame data
Variable quantity；Under normal touch state, normal touch-control scanning frame data and water detection scanning frame data
The variable quantity of relatively respective touch-control a reference value is all higher than threshold value；In the presence of under isolated water droplet state, quilt
The normal touch-control scanning frame data generation of setting touch a reference value relatively of the subchannel of water covering
Variable quantity be less than water detect scanning frame data relatively setting touch a reference value produce change
Amount；The data analysis module to the capacitance value data of the subchannel being covered with water at
Reason, removes interference of the water droplet to the capacitance of the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is the scanning carried out to all subchannels, institute
It is the interval scan carried out to the subchannel, i.e. the two of arbitrary neighborhood to state water detection scanning frame
In the subchannel, a subchannel carries out normal touch-control scanning, and another described point logical
Road is grounded.
The embedded step flow chart from the mode of operation such as Figure 11 for holding touch control display apparatus
It is shown：
Normal scan is first carried out, then enters water-filling detection scanning, to related point being covered with water
Passage is marked, and then carries out normal data processing, and the subchannel of anhydrous mark is then turned
Enter normal scanning, the subchannel for having water gauge to remember carries out having water Data Post accordingly, removes
Influence of the water droplet to touch, improves the degree of accuracy touched with water.
The logic for carrying out water droplet processing using software is as shown in figure 12：
Into software processing water droplet logic, then carry out normal scan and see if there is sensing, thoughts
Should then illustrate there is normal touch, if do not sense, then enter water-filling detection scanning frame see if there is
Sensing, if sensing is then provided with water gauge note to corresponding subchannel, otherwise, is carried out normal
Data processing, judge the passage without it is any touch.
After having judged whether to be touched, in addition it is also necessary to carry out data processing, corresponding point is found out
The coordinate of passage, detailed process is as shown in figure 13：
First carry out normal prime filtering, then check subchannel whether have water gauge note, such as without
Water gauge note then carries out normal data processing, and such as subchannel has water gauge note, then for there is water state
Prime filtering is carried out, normal data processing is then carried out；Whether have mark, such as if reexamining
Anhydrous mark, then reported the coordinate data of the subchannel, otherwise, is remembered to there is water gauge
Subchannel progress has after water Data Post, reports the coordinate data of the subchannel to carry out.
Multiple row of channels and the annexation of bus, scan module etc., as shown in Figure 14,15.
Embedded TFT (Thin-film transistor, film crystal from appearance touch control display apparatus
Pipe), common electric voltage driving port and induction electrode be generally located on same layer, it is and multiple described
In-cell is traditionally arranged to be tft array from the TFT for holding capacitance plate, and the tft array layer is set
Put between tft array glass and liquid crystal layer.
This setup is due to sharing a VcomInterface can scan all sensings simultaneously
Electrode, sweep time is short, and scan frequency is high, and can be integrated into IC is used for touch-control or LCD drives
It is dynamic.Suitable for MIPI, I2C and SPI.
And TFT and VcomBetween connected mode typically have two schemes：Individual layer and bilayer.
In single-layer schemes, as shown in figure 14, TFT and V in tft array described in same columncom
Connecting line contact conducting, i.e. TFT and TFT and V with the surface of the TFTcomConnection
In the same plane, the advantage of this mode is line：The In-cell can be reduced and hold electric capacity certainly
The thickness of screen, and have the disadvantage：TFT in same row equal length in the vertical, and in transverse direction
On, it is be arranged in parallel due to needing a plurality of connecting line with TFT, closer to VcomTFT exist
Width in transverse direction is smaller, and the control area of liquid crystal is being reduced, if i.e. different TFT
Every electrical parameter is identical, and different TFT area is different, and the liquid crystal area that can be controlled is not
Together so that the In-cell holds the non-uniform light of capacitance plate certainly, and to the operation essence of lead
Degree is unusual, and technology difficulty is larger, can directly pass through the etching with higher etching precision
Process is realized.
And in double-deck scheme, as shown in figure 15, TFT in tft array described in same column with
VcomConnecting line and the TFT turned on through insulating barrier, i.e. TFT and TFT and and Vcom
Connecting line in two different planes, it is necessary to TFT surfaces plate a layer insulating, pass through
The mode of borehole is turned on connecting line, and the advantage of this mode is：Each TFT area can be with
It is identical, it is embedded from the luminous uniform of touch control display apparatus is held, have the disadvantage：Due to TFT
Area it is very small, turned on TFT surface through insulating barrier and connecting line, technology difficulty is non-
Chang great.
In summary, it is provided in an embodiment of the present invention embedded from appearance touch control display apparatus and water
Detection method, scanning frame, water detection scanning are detected by adding water in the normal scan period
Allow after portion of channel ground connection, realized to effective detection of another part passage to water during frame,
By contrasting the change of capacitance before and after subchannel ground connection, judge that subchannel is no to there is water state.
Detect that scanning frame acquisition accurately has water state by water, then data post-processed again,
To improve the degree of accuracy operated with water.
Above to provided by the present invention embedded from appearance touch control display apparatus and water detection side
Method is described in detail.Principle and embodiment party of the specific case used herein to the present invention
Formula is set forth, the explanation of above example be only intended to help to understand the present invention method and
Its core concept.It should be pointed out that for those skilled in the art, not
On the premise of departing from the principle of the invention, some improvement and modification can also be carried out to the present invention, this
A little improvement and modification are also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. it is a kind of embedded from appearance touch control display apparatus water detection method, it is characterised in that bag
Include：
All row of channels of full screen are divided into multigroup subchannel, carrying out touch-control to the subchannel sweeps
Retouch, subchannel described in every group includes an at least row of channels, each scan period includes normal touch-control
Scanning frame and water detection scanning frame；
The normal touch-control scanning frame and water detection scanning frame are set with touch-control benchmark respectively
Value, the normal touch-control scanning frame data and water inspection that relatively more each scan period collects
Survey the variable quantity of the scanning relatively respective setting touch a reference value of frame data；Under normal touch state,
The change of normal touch-control scanning frame data and water the detection scanning relatively respective touch-control a reference value of frame data
Amount is all higher than threshold value；In the presence of under isolated water droplet state, the normal touch-control for the subchannel being covered with water
Scanning frame data, the variable quantity of the generation of setting touch a reference value has been less than water detection scanning frame relatively
The data variable quantity that setting touch a reference value is produced relatively；
Capacitance value data to the subchannel being covered with water is handled, and removes water droplet to institute
State the interference of the capacitance for the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is that the touch-control that all subchannels are carried out is swept
Retouch, the water detection scanning frame is the interval scan carried out to the subchannel, i.e. arbitrary neighborhood
Two subchannels in, the subchannel carries out normal touch-control scanning, another institute
State subchannel ground connection.
2. it is as claimed in claim 1 embedded from appearance touch control display apparatus water detection method,
Characterized in that, each scan period includes two normal touch-control scanning frames and one
The water detects scanning frame.
3. it is as claimed in claim 2 embedded from appearance touch control display apparatus water detection method,
Characterized in that, each scan period be after the completion of two normal touch-control scanning frames again
Carry out a water detection scanning frame.
4. it is as claimed in claim 2 embedded from appearance touch control display apparatus water detection method,
Characterized in that, the water detects scanning frame between two normal touch-control scanning frames.
5. it is as claimed in claim 1 embedded from appearance touch control display apparatus water detection method,
Characterized in that, at least one described water detection scanning frame is located at the two neighboring normal touch-control
Between scanning frame.
6. it is as claimed in claim 1 embedded from appearance touch control display apparatus water detection method,
Characterized in that, each scan period, which also includes secondary water, detects scanning frame, it is described secondary
The subchannel that water detection scanning frame is closed detects that the normal touch-control of scanning frame is swept for first time water
Retouch passage.
7. it is as claimed in claim 6 embedded from appearance touch control display apparatus water detection method,
Characterized in that, the water detection scanning frame is logical to odd number of points after even number subchannel inner ground
The scanning that road is carried out, the secondary water scanning frame is to the even number point after odd number subchannel is grounded
The scanning that passage is carried out.
8. it is embedded from the water detection of appearance touch control display apparatus as described in claim any one of 1-7
Method, it is characterised in that the row of channels quantity of multigroup subchannel is equal.
9. it is a kind of embedded from appearance touch control display apparatus, it is characterised in that including：
Scan module, the scan module is used to be scanned the subchannel for specifying screen, and one
The individual scan period includes normal touch-control scanning frame and water detection scanning frame；
Data analysis module, normal touch-control scanning frame and the water detection scanning frame is set respectively
Surely there is touch-control a reference value, it is normal that data analysis module more each scan period collects
Touch-control scans the change of frame data and the water detection scanning relatively respective setting touch a reference value of frame data
Amount；Under normal touch state, normal touch-control scanning frame data and water detection scanning frame data are relative
The variable quantity of respective touch-control a reference value is all higher than threshold value；In the presence of under isolated water droplet state, covered by water
The normal touch-control scanning frame data change of the generation of setting touch a reference value relatively of the subchannel of lid
Change amount is less than water and detects the scanning frame data variable quantity that setting touch a reference value is produced relatively；Institute
State data analysis module to handle the capacitance value data of the subchannel being covered with water, go
Interference except water droplet to the capacitance of the subchannel being covered with water；
Wherein, the normal touch-control scanning frame is the scanning carried out to all subchannels, institute
It is the interval scan carried out to the subchannel, i.e. the two of arbitrary neighborhood to state water detection scanning frame
In the subchannel, a subchannel carries out normal touch-control scanning, and another described point logical
Road is grounded.
10. it is as claimed in claim 9 embedded from appearance touch control display apparatus, it is characterised in that
Also include scan control module, the scan control module is included for distributing the subchannel
Row of channels quantity and closure and the unlatching of the corresponding subchannel of control.
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| CN111459346A (en) * | 2020-03-31 | 2020-07-28 | 深圳市汇顶科技股份有限公司 | Capacitive touch device and gesture recognition method, chip and storage medium thereof |
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