CN105261337B - Touch control display apparatus and its driving method and driving circuit - Google Patents

Touch control display apparatus and its driving method and driving circuit Download PDF

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Publication number
CN105261337B
CN105261337B CN201410302782.4A CN201410302782A CN105261337B CN 105261337 B CN105261337 B CN 105261337B CN 201410302782 A CN201410302782 A CN 201410302782A CN 105261337 B CN105261337 B CN 105261337B
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touch control
display
control unit
capacitance
unit
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CN105261337A (en
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莫良华
蒋新喜
蔡宁宁
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Dun Tai Electronics Co Ltd
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Dun Tai Electronics Co Ltd
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Abstract

A kind of touch control display apparatus of present invention offer and its driving method and driving circuit, for the driving method of touch control display apparatus of the present invention for including but not limited in touch control display apparatus provided by the invention, touch control display apparatus includes multiple touch control units for realizing touch-control sensing and multiple display units for being shown for realizing image.The driving method includes：According to the gray scale voltage for being applied to each display unit, influence coefficient and weighing factor that each display unit currently detects touch control unit capacitance are obtained；According to acquired influence coefficient and with the weighing factor that is stored, obtain the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage；The modifying factor obtained according to current display image is modified the measured value of touch sensible, and revised measured value gray scale voltage different when eliminating picture display detects touch control unit the influence of capacitance, to effectively improve the precision of touch detection.

Description

Touch control display apparatus and its driving method and driving circuit
Technical field
The present invention relates to touch-control display field more particularly to a kind of touch control display apparatus and its driving method and driving electricity Road.
Background technology
Capacitive touch screen relies on the advantage of its high sensitivity in the mobile devices such as mobile phone widely instead of electricity Resistive touch screen, in order to further increase the frivolous property of mobile device, integrated capacitive touches in traditional liquid crystal display screen technique Touching detection function becomes the hot topic of research, and embedded (In Cell) touch panel is that one such integrated capacitive touches in box The mode of detection function is touched, touch detection electrode is integrated in the array substrate of liquid crystal display, makes by In Cell touch panels It obtains without being bonded individual capacitive touch screen on liquid crystal display, liquid crystal display itself is integrated with the work(of touch detection Can, the integration with height and frivolous property.Public electrode piecemeal as the detecting electrode of self-capacitance touch detection or is used as Emission electrode when mutual capacitance detects is used, and can be saved and be formed special detecting electrode in array substrate, can effectively improve The aperture opening ratio of liquid crystal display.
In order to realize touch detection, the various parasitic capacitance problems for considering public electrode are needed.Fig. 1 shows a kind of touch-control The equivalent circuit diagram of a sub-pixel unit of display unit, the sub-pixel unit include thin film transistor (TFT) in display device, The thin film transistor (TFT) includes grid 01, source electrode 02, drain electrode 03, and the grid 01 is electrically connected with grid line 07, the source electrode 02 It is electrically connected with data line 06, drain electrode 03 is connected with pixel electrode 04, and public electrode 05 is connected with Vcom lines 08, passes through above-mentioned circuit With the work of device so that the liquid crystal between pixel electrode 04 and public electrode 05 deflects, to control sub-pixel unit Light transmittance.There is liquid crystal capacitance Clc, the parasitic capacitance in figure to have between pixel electrode 04 and public electrode 05：Public electrode 05 To the parasitic capacitance Cmg of grid line 07, for public electrode 05 to the parasitic capacitance Cms of data line 06, public electrode 05 is external to shielding The parasitic capacitance Cs of frame (not shown), the parasitic capacitance Cgd of the grid 01 and drain electrode 03 of thin film transistor (TFT), grid 01 and source electrode 02 Parasitic capacitance Cgs.
When public electrode 05 is used as the detecting electrode of self-capacitance touch detection, the capacitance detected is parasitic capacitance The capacitance of Cs, i.e. public electrode 05 to the external frame of screen (ground terminal for being considered self-capacitance detection).When showing variation due to picture, Cause liquid crystal deflection angle different when applying different gray scale voltages between pixel electrode 04 and public electrode 05, causes to make Clc The chymoplasm dielectric constant of capacitance changes, and causes different display areas indirectly, even if not touching, the liquid of different zones Brilliant capacitance Clc is also different.When carrying out touch detection, parasitic capacitance Cs be equivalent to capacitance between public electrode 05 and finger and Capacitance between finger and the earth is superimposed, since public electrode 05 is the electrode that liquid crystal capacitance Clc and parasitic capacitance Cs is shared Plate, it is believed that containing partial liquid crystal capacitance Clc on the measured value of parasitic capacitance Cs, therefore pixel electrode 04 with it is public When applying different gray scale voltages between electrode 05, the variation of liquid crystal capacitance Clc can lead to that parasitic capacitance Cs is made to change, from And bring interference to touch detection.
When public electrode 05 is used as the detecting electrode of mutual capacitance touch detection, or utilizing with thin film transistor (TFT) same When other electrodes on substrate are as the detecting electrode of mutual capacitance or self-capacitance touch detection, the variation of liquid crystal deflection can equally give Touch detection brings interference.
Therefore, how to reduce the interference that the variation of liquid crystal deflection when being shown by picture brings touch detection capacitance, into And the precision of touch detection is improved, become those skilled in the art's urgent problem to be solved.
Invention content
Problems solved by the invention is a kind of touch control display apparatus of proposition and its driving method and driving circuit, is reduced by drawing The interference that the variation of liquid crystal deflection brings touch detection capacitance when face is shown, and then improve the precision of touch detection.
To solve the above problems, the present invention proposes a kind of driving method of touch control display apparatus, including：A kind of touch-control is aobvious The driving method of showing device, which is characterized in that the touch control display apparatus includes multiple touch control units for realizing touch-control sensing With the multiple display units shown for realizing image, which includes：
Store the influence coefficient that different gray scale voltages detect touch control unit capacitance；
The display unit that store has different relative position relations from touch control unit detects touch control unit the shadow of capacitance Ring weight；
Apply gray scale voltage to each display unit, to drive the touch control display apparatus to perform image display；
According to the gray scale voltage for being applied to each display unit, obtains each display unit and capacitance currently is detected to touch control unit Influence coefficient；
According to acquired influence coefficient and with the weighing factor that is stored, obtain each touch control unit detection capacitance by The modifying factor that the gray scale voltage influences；
The touch display unit is driven to carry out touch sensible, the modifying factor obtained according to current display image is to touching The measured value of induction is modified.
Optionally, storing the step of different gray scale voltages detect the influence coefficient of capacitance to touch control unit includes：
Apply all display units of the gray scale voltage to touch control display apparatus frame by frame, wherein for same frame, apply same Gray scale voltage gives all display units, for different frame, applies different gray scale voltages to all display units；
In every frame applies the step of gray scale voltage is to all display units, detection is located at touch control display apparatus centre bit The detection capacitance for the touch control unit set detects capacitance to obtain from the corresponding touch control unit of different gray scale voltages；
Capacitance is detected as reference capacitance value, based on different grayscale electricity using the corresponding touch control unit of a preset gray scale voltage The relationship for pressing corresponding touch control unit detection capacitance and the reference capacitance value, obtains different gray scale voltages and is examined to touch control unit Survey the influence coefficient of capacitance.
Optionally, store different gray scale voltages further includes to the method for the influence coefficient of touch control unit detection capacitance： Obtain different gray scale voltages to touch control unit detect capacitance influence coefficient after, generation include each gray scale voltage and with institute The corresponding look-up table for influencing coefficient of gray scale voltage is stated, the look-up table is stored.
Optionally, the multiple display unit is arranged in array, and storage has different relative position relations from touch control unit Display unit to touch control unit detect capacitance weighing factor the step of include：
Region division is carried out to array of display cells and chooses the inspection using the central point of touch control unit as inspection center Display unit centered on the display unit of measured center face position, centered on the center display unit, delimitation includes one First reference zone of a or multiple display units applies the first grayscale electricity to the display unit in first reference zone Pressure, applies the second gray scale voltage to remaining display unit outside the first reference zone, and touch control capacitance detection is carried out to touch control unit, The touch control unit measured at this time is detected into capacitance to obtain, and as the first detection capacitance；
Centered on the center display unit, delimitation includes the second reference zone of multiple display units, makes the second ginseng Examination district domain includes first reference zone, and the quantity of the display unit in second reference zone is more than the first reference zone The quantity of interior display unit applies the first gray scale voltage to the display unit in second reference zone, is referred to second Remaining display unit outside region applies the second gray scale voltage, touch control capacitance detection is carried out to touch control unit, by what is measured at this time Touch control unit detects capacitance as the second detection capacitance；
The first detection capacitance and the second detection capacitance are brought into weight equation, using the numerical value of acquisition as in the second ginseng The weighing factor of multiple display units within the domain of examination district and except the first reference zone.
Optionally, storage from touch control unit there is the display unit of different relative position relations to detect capacitance to touch control unit The step of weighing factor of value further includes：Recording the first gray scale voltage, the corresponding influence coefficient of first gray scale voltage is maximum, Record the second gray scale voltage, the corresponding influence coefficient of second gray scale voltage is minimum.
Optionally, by first detection capacitance and second detection capacitance bring weight equation into, using the numerical value of acquisition as Further include within the second reference zone and in the step of weighing factor of multiple display units except the first reference zone：
Using the area of the first reference zone as the first parameter；
Using the area of the second reference zone as the second parameter；
Second gray scale voltage is applied to all display units of touch control display apparatus, is detected with the touch control unit measured at this time Capacitance is as third parameter；
First gray scale voltage is applied to all display units of touch control display apparatus, is detected with the touch control unit measured at this time Capacitance is as the 4th parameter；
By first parameter, the second parameter, third parameter, the 4th parameter, the first detection capacitance and the second detection electricity Capacitance brings the weight equation into together.
Optionally, the weight equation is：
Y=(C2-C1)/[(Cmax-Cmin) * (area2-area1)],
Wherein, y is weighing factor, and C2 is the second detection capacitance, and C1 is the first detection capacitance, and Cmax is the 4th ginseng Amount, Cmin are third parameter, and area2 is the second parameter, and area1 is the first parameter.
Optionally, storage from touch control unit there is the display unit of different relative position relations to detect capacitance to touch control unit The step of weighing factor of value further includes：
By repeatedly delimiting the first reference zone and the second reference zone, the first detection capacitance and the second detection electricity are obtained The step of capacitance, will be obtained every time wherein using the second reference zone delimited every time as the first reference zone delimited next time The first detection capacitance and the second detection capacitance bring weight equation into, delimit the first reference zone and the every time to obtain After two reference zones, the influence of multiple display units within the second reference zone and except the first reference zone is weighed Weight.
Optionally, the step of the first reference zone of delimitation, the second reference zone includes：Make first reference zone, The shape of two reference zones and the shape of the touch control unit match.
Optionally, the shape of the touch control unit is rectangle, and first reference zone, the second reference zone are with institute Centered on stating center display unit, include the referential array of multiple display units, the line number and columns of the referential array are equal.
Optionally, the shape of the touch control unit is circle, and first reference zone, the second reference zone are with institute Centered on stating center display unit, include the display unit set of multiple display units, the display unit set is outermost The distance of multiple display units to center display unit is equal.
Optionally, storage from touch control unit there is the display unit of different relative position relations to detect capacitance to touch control unit The step of weighing factor of value further includes：
Region division is carried out to display unit based on the weighing factor, establishes the corresponding sampling area of each touch control unit, Display unit in the sampling area, which is greater than or equal to the weighing factor of touch control unit, to be located at outside the sampling area Display unit to the weighing factor of touch control unit；
Store influence of the display unit in the corresponding sampling area of each touch control unit and sampling area to touch control unit Weight.
Optionally, it is based on the weighing factor and region division is carried out to display unit, establish that each touch control unit is corresponding to be adopted The step of sample region includes:
The step of repeatedly delimiting the first reference zone and the second reference zone, wherein the second reference zone that will be delimited every time As the first reference zone delimited next time；
Using the first reference zone area for delimiting every time as the first parameter；
Using the second reference zone area for delimiting every time as the second parameter；
After delimiting the first reference zone and the second reference zone every time, the first detection capacitance and the second detection are obtained First detection capacitance and the difference of the second detection capacitance divided by first are detected capacitance by capacitance, and the value of acquisition is as the Five parameters；
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter；
When the 5th parameter is less than or equal to seven parameters, using the second current reference zone as sampling area.
Optionally, the display unit includes：Red sub-pixel unit, green sub-pixels unit, blue subpixels unit；
The basis is applied to the gray scale voltage of each display unit, obtains each display unit and currently detects electricity to touch control unit The step of influence coefficient of capacitance includes：
Obtain that red sub-pixel unit, green sub-pixels unit, each gray scale voltage corresponds on blue subpixels unit respectively Influence coefficient；
It obtains red sub-pixel unit, green sub-pixels unit, blue subpixels unit and corresponds to the average value for influencing coefficient, The influence coefficient of capacitance is detected to touch control unit using the average value as display unit.
Optionally, the basis is applied to the gray scale voltage of each display unit, obtains each display unit currently to touch-control list Member detection capacitance influence coefficient the step of include：It has been shown in a frame image when touch control display apparatus is performed image display Finish, before another frame image is shown, according to the gray scale voltage for being applied to each display unit, obtains each display unit currently to touch-control Unit detects the influence coefficient of capacitance.
Optionally, the touch control display apparatus includes the first display area and the second display area；
Apply gray scale voltage to each display unit, to be wrapped the step of driving the touch control display apparatus to perform image display It includes：Display unit charging finishes when performing image display in the first display area, applies gray scale voltage to the second display area Each display unit, with drive the second display area perform image display；
The basis is applied to the gray scale voltage of each display unit, obtains each display unit and currently detects electricity to touch control unit The step of influence coefficient of capacitance includes：According to the gray scale voltage for being applied to each display unit in the first display area, the is obtained Each display unit currently detects touch control unit the influence coefficient of capacitance in one display area.
The present invention also provides a kind of driving circuit of touch control display apparatus, which includes for realizing touch-control Multiple touch control units of induction and the multiple display units shown for realizing image, the driving circuit include：
Drive module, for driving the touch display unit to carry out touch sensible；
Display module, for applying gray scale voltage to each display unit, to drive the touch control display apparatus to carry out image Display；
Analysis module detects touch control unit the influence coefficient of capacitance for storing different gray scale voltages, and is stored with There is the weighing factor that the display unit of different relative position relations detects touch control unit capacitance from touch control unit；
The analysis module is additionally operable to, according to the gray scale voltage for being applied to each display unit, it is currently right to obtain each display unit Touch control unit detects the influence coefficient of capacitance, according to acquired influences coefficient and with the weighing factor that is stored, acquisition The modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage, and the amendment obtained according to current display image The measured value for the touch sensible that factor pair drive module obtains is modified.
Optionally, the analysis module includes：
First memory module detects touch control unit for storing different gray scale voltages the influence coefficient of capacitance；
Second memory module has the display unit of different relative position relations to touch-control list for storing from touch control unit The weighing factor of member detection capacitance；
Correcting module is connected with the drive module, display module, the first memory module and the second memory module, is used for It is applied to the gray scale voltage of each display unit according to display module, gray scale voltage is obtained to touch-control list from first memory module The influence coefficient of member detection capacitance, and obtain each display unit from second memory module and capacitance is detected to touch control unit Weighing factor obtain each touch control unit and detect capacitance by the ash according to acquired influence coefficient and weighing factor The modifying factor of rank voltage influence, and the detection capacitance that drive module is obtained according to the modifying factor that current display image obtains Value is modified.
Optionally, first memory module includes each gray scale voltage and corresponding with the gray scale voltage for storing Influence the look-up table of coefficient.
Optionally, each touch control unit is corresponding with the sampling area being made of multiple display units, is located at the sampling Display unit in region is greater than or equal to the display unit pair being located at outside the sampling area to the weighing factor of touch control unit The weighing factor of touch control unit；
The weighing factor that second memory module is used to store the display unit in the sampling area to touch control unit.
Optionally, the correcting module is used to obtain the grayscale electricity for the display unit that drive module is applied in sampling area Pressure obtains the influence system that each display unit in sampling area currently detects touch control unit capacitance by the first memory module Number, the influence coefficient that each display unit currently detects touch control unit capacitance form the first matrix；
The correcting module is additionally operable to obtain the display unit pair in the sampling area by second memory module The weighing factor of touch control unit, the display unit in the sampling area form the second matrix to the weighing factor of touch control unit；
The correcting module each of described first matrix can be influenced in coefficient and the second matrix with influence coefficient With position weighing factor be multiplied, obtain the third matrix being made of multiple correction factors, with numerical value in the third matrix it With as modifying factor.
Optionally, the analysis module is used for when drive module drives the touch display unit to carry out touch sensible, It brings the measured value of the touch sensible for each touch control unit that drive module obtains and modifying factor into capacitance and repairs equation, obtain Capacitance after the amendment of each touch control unit, capacitance is as practical touch detection value using after amendment.
Optionally, the analysis module when touch control display apparatus is performed image display in a frame image for having shown Finish, before another frame image is shown, according to the gray scale voltage for being applied to each display unit, obtains each display unit currently to touch-control Unit detects the influence coefficient of capacitance.
Optionally, the touch control display apparatus includes the first display area and the second display area；
The display module is used for the display unit charging in the first display area and finishes when performing image display, and applies ash Rank voltage is performed image display to each display unit of the second display area with the second display area of driving；
The analysis module is used to, according to the gray scale voltage for being applied to each display unit in the first display area, obtain first Each display unit currently detects touch control unit the influence coefficient of capacitance in display area.
Optionally, the drive module, display module and the analysis module are integrated in a touch display chip.
Optionally, the drive module is integrated in a touch chip with the analysis module, and the display module is set to One display chip.
The present invention also provides a kind of touch control display apparatus, including：
Multiple touch control units for realizing touch-control sensing and multiple display units for being shown for realizing image；
The driving circuit of the touch control display apparatus provided by the invention, and the driving circuit of the touch control display apparatus It is connected with the multiple touch control unit and multiple display units, the driving circuit of the touch control display apparatus is described for detecting The touch control unit of multiple touch control units detects capacitance.
Optionally, the touch control display apparatus further includes first substrate, second substrate and is set to first substrate, second Liquid crystal layer between substrate, the display unit include the pixel electrode being set on the first substrate, the touch control unit Including the touch detection electrode being set on the first substrate.
Optionally, public electrode is provided on the first substrate, the public electrode is used as touching for the touch control unit Touch detecting electrode.
Optionally, the touch control unit detection capacitance is between the touch detection electrode and ground terminal of the touch control unit The measured value of capacitance.
Compared with prior art, technical scheme of the present invention has the following advantages：
The driving method of touch control display apparatus of the present invention is used in touch control display apparatus, and the touch control display apparatus includes using In the multiple display units realized multiple touch control units of touch-control sensing and shown for realizing image.The driving method includes depositing Store up the influence coefficient that different gray scale voltages detect touch control unit capacitance；Storage is closed from touch control unit with different relative positions The display unit of system detects touch control unit the weighing factor of capacitance；Apply gray scale voltage to each display unit, to drive Touch control display apparatus is stated to perform image display；According to the gray scale voltage for being applied to each display unit, it is current to obtain each display unit The influence coefficient of capacitance is detected to touch control unit；According to acquired influence coefficient and with the weighing factor that is stored, obtain Obtain the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage；The touch display unit is driven to be touched Induction is touched, the modifying factor obtained according to current display image is modified the measured value of touch sensible.Revised measurement Value gray scale voltage different when substantially eliminating picture display detects touch control unit the influence of capacitance, tactile to effectively improve Touch the precision of detection.
Further, store different gray scale voltages further includes to the method for the influence coefficient of touch control unit detection capacitance： Obtain different gray scale voltages to touch control unit detect capacitance influence coefficient after, generation include each gray scale voltage and with institute The corresponding look-up table for influencing coefficient of gray scale voltage is stated, the look-up table is stored.So each display unit is applied in basis Gray scale voltage, obtain each display unit currently to touch control unit detect capacitance influence coefficient when, can be easily from described The influence coefficient of corresponding current gray voltage is obtained in look-up table.
Description of the drawings
Fig. 1 is a kind of equivalent circuit diagram of a sub-pixel unit of display unit in touch control display apparatus；
Fig. 2 is the schematic diagram of multiple display units in one embodiment of touch control display apparatus of the present invention；
Fig. 3 is the schematic diagram of multiple touch control units in one embodiment of touch control display apparatus of the present invention；
Fig. 4 is the relational graph of driving circuit modules in one embodiment of touch control display apparatus of the present invention；
Fig. 5 is the schematic diagram of touch control unit its periphery display unit in Fig. 3；
Fig. 6 is the flow chart of the driving method of touch control display apparatus of the present invention.
Specific implementation mode
When touch detection electrode to be integrated in liquid crystal display, apply liquid crystal deflection caused by different gray scale voltages Variation is easy to bring interference to touch detection.
A kind of touch control display apparatus of present invention offer and its driving method and driving circuit.The touch control display apparatus includes Multiple touch control units for realizing touch-control sensing and multiple display units for being shown for realizing image；Driving circuit, and The driving circuit is connected with the multiple touch control unit and multiple display units, and the driving circuit includes：Drive module, For driving the touch display unit to carry out touch sensible；Display module, for applying gray scale voltage to each display unit, with The touch control display apparatus is driven to perform image display；Analysis module detects touch control unit for storing different gray scale voltages The influence coefficient of capacitance, and be stored with display unit of the touch control unit with different relative position relations and touch control unit is detected The weighing factor of capacitance.According to the driving method of touch control display apparatus of the present invention, the analysis module is additionally operable to according to application To the gray scale voltage of each display unit, the influence coefficient that each display unit currently detects touch control unit capacitance is obtained, according to Acquired influence coefficient and with the weighing factor that is stored, obtain each touch control unit and detect capacitance by the gray scale voltage The modifying factor of influence, and the measurement for the touch sensible that drive module is obtained according to the modifying factor that current display image obtains Value is modified.Revised measured value gray scale voltage different when substantially eliminating picture display detects capacitance to touch control unit The influence of value, to effectively improve the precision of touch detection.
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention Specific embodiment be described in detail.
Present invention firstly provides a kind of touch control display apparatus.
Specifically, touch control display apparatus of the present invention is the touch control display apparatus using liquid crystal display panel as display portion. The touch control display apparatus includes first substrate, second substrate and the liquid crystal layer being set between first substrate, second substrate, The display unit includes the pixel electrode and public electrode being set on the first substrate, and the touch control unit includes setting In the touch detection electrode on the first substrate.
In the present embodiment, the first substrate, second substrate are transparent glass substrate, but the first base of the present invention couple Plate, second substrate material be not limited.
In the present embodiment, the touch control display apparatus includes display touch detection chip, the display touch detection core Display module, drive module and the analysis module of the built-in driving circuit in piece, the display touch detection chip bonding exist On first substrate.
The first substrate is array substrate, i.e., is formed with the array of multiple display unit compositions on the first substrate.Fig. 2 Show the schematic diagram of multiple display units in one embodiment of touch control display apparatus of the present invention.
With reference to figure 2, in the present embodiment, multiple display units are formed on first substrate 100, multiple display units are in Array is arranged.Each display unit is mainly made of thin film transistor (TFT) 101, pixel electrode 102 and public electrode 109. Multiple data lines 105, a plurality of grid line 103, a plurality of public electrode wire (Vcom) 104, grid are also formed on first substrate 100 Driving circuit 106, source electrode drive circuit 107, common electrode driving circuit 108.The gate driving circuit 106, source drive Circuit 107, common electrode driving circuit 108 constitute the display module of touch control display apparatus driving circuit of the present invention.
It should be noted that the position of pixel electrode 102 and public electrode 109 is only illustrated with the same rectangle in Fig. 2, In fact, in the present embodiment, the display pattern of display unit can be coplanar conversion (In- in the touch control display apparatus Plane-Switching, IPS) pattern or fringing field switch (Fringe Field Switching, FFS) pattern, pixel electrode 102 with public electrode 109 in first substrate, pixel electrode 102 and public electrode 109 can be cross one another interdigitated or Bar shaped, pixel electrode 102 and public electrode 109 form liquid crystal capacitance Clc, to be produced between pixel electrode 102 and public electrode 109 Raw transverse electric field can pass through the liquid crystal molecule (Liquid Crystal) in liquid crystal layer, the size of electric field that can determine liquid crystal molecule Rotation angle size, and liquid crystal molecule rotation angle can be determined through the power of sub-pixel light in particular directions.
But the present invention is not limited the display pattern of display unit in the touch control display apparatus, in other embodiment In, the display pattern of display unit can also be twisted nematic (twisted nematic in the touch control display apparatus Liquid crystal mode, TN) pattern or vertical orientation (Vertical Alignment, VA) pattern etc., above-mentioned In display pattern, public electrode is arranged on second substrate, and the shape of pixel electrode 102 and public electrode 109 is bulk.
Specifically, in the present embodiment, the method for driving display unit work is：Source electrode drive circuit 107 is data line 105 provide electric signal, apply grayscale electricity to the thin film transistor (TFT) source electrode (source) of a row display unit per data line 105 Pressure, and one end of thin film transistor (TFT) steelyard slepsydra pole (drain) then connects pixel electrode 102, gate driving circuit 106 is a plurality of grid Line 103 provides electric signal, and every grid line 103 applies scanning voltage to the thin-film transistor gate of a line display unit, with thin Film transistor charges (i.e. gray scale voltage) to pixel electrode 102 by data line 105 as switch element, common electrode drive electricity Road 108 is that public electrode wire (Vcom) 104 provides electric signal, and public electrode wire (Vcom) 104 is the public of all display units Electrode 109 applies fundamental voltage, and different gray scale voltages makes the electric field formed between pixel electrode 102 and public electrode 109 Of different sizes, liquid crystal capacitance Clc is also different.
It should be noted that only simple illustration is done to the method for driving display unit work in the present embodiment, in reality Display unit in, the method for driving display unit work may be different, but should not therefore limit the present invention, the present invention In the driving method of touch control display apparatus, the method that other driving display unit work in the prior art may be used makes display list Member work.
It should be noted that in the present embodiment, the touch control display apparatus is colour display device, the second substrate For colored filter substrate, i.e., it is formed with the color blocking of multiple Red Green Blues on the glass substrate.But the present invention is to this It is not restricted, in other embodiments, the second substrate can also be flint glass substrate.
In the present embodiment, each display unit includes three sub-pixel units：Red sub-pixel unit, green sub-pixels Unit, blue subpixels unit, wherein each sub-pixel unit includes independent thin film transistor (TFT), pixel electrode 102 and public affairs Common electrode 109, region corresponding with each sub-pixel unit is respectively provided with the color blocking of Red Green Blue on second substrate, and And each sub-pixel unit independent can drive, but the invention is not limited in this regard, it is in other embodiments, such as described to touch When control display device is white and black displays device, each display unit can also only include a sub-pixel unit, described to touch When control display device is colour display device, each display unit can also only include four sub-pixel units, the second base Region corresponding with each sub-pixel unit is respectively the color blocking of red, green, blue, Bai Sise on plate, to increase touch control display apparatus Color saturation.
It should also be noted that, in other embodiments, it is described aobvious when the touch control display apparatus is white and black displays device Show that unit can also only include a black and white sub-pixel unit.
Touch control display apparatus of the present invention further includes multiple touch control units, and touch control display apparatus is touched in finger by detection When, realize touch detection.Specifically, the touch control unit of the touch control unit can be capacitance touch detection pattern, in this reality It applies in example, touch detection is carried out with the detection pattern of self-capacitance, i.e., the described touch control unit detection capacitance is the touch control unit Touch detection electrode and ground terminal between capacitance measured value.But whether the present invention is to the detection pattern progress of self-capacitance Touch detection is not limited, and in other embodiments, can also carry out touch detection with the detection pattern of mutual capacitance.
In the present embodiment, the touch for the public electrode 109 on the first substrate 100 being used as to the touch control unit is examined Electrode is surveyed, in this way when making touch control display apparatus, the step of independently forming touch detection electrode can be saved, it is aobvious to improve touch-control The light transmittance of showing device simultaneously reduces production cost, and therefore, in the present embodiment, the touch control unit detection capacitance is common electrical Capacitance Cs between pole 109 and the earth.
But whether the present invention is to tactile as the touch control unit by the public electrode 109 on the first substrate 100 It touches detecting electrode not to be limited, in other embodiments, independent touch can also be formed on first substrate 100 or second substrate Touch detecting electrode.
As shown in figure 3, showing that public electrode is used as the schematic diagram of one embodiment of touch detection electrode of touch control unit.Knot It closes with reference to figure 2, Fig. 3, the public electrode 109 of entire touch control display apparatus is divided into the square electrode of M rows N row, each square electricity Pole includes the public electrode 109 in multiple display units.Each square electrode is connected as a touch control unit 201 by conducting wire To driving circuit 202 is touched, the touch driving circuit 202 is the driving mould of the driving circuit of touch control display apparatus of the present invention Block.
In other embodiments, the touch control unit 201 can also be independent touch detection electrode and be formed, can also It is made of independent emission electrode and detecting electrode under mutual capacitance detection pattern.
It should be noted that in the present embodiment, in order to avoid interference of the liquid crystal display to touch detection in control, needing Time-sharing multiplex is done to public electrode 109.Public electrode 109 is driven needed for extremely display in the stage of refreshing of display unit Current potential, and go to drive in touch detection electrode of the touch detection stage then by public electrode 109 as touch control unit, it is specific to control Method is technology customary in the art, is not repeated here.
As stated in the background art, when public electrode 109 is used as the touch detection electrode of self-capacitance detection pattern, in pixel When applying different gray scale voltages between electrode 102 and public electrode 109, the liquid crystal deflection under different gray scale voltages leads to liquid crystal The variation of capacitance Clc can lead to that capacitance Cs is made to change, to bring interference to touch detection.In some other detection mould In formula, the variation of liquid crystal capacitance Clc can equally bring touch detection interference.Such as when public electrode 109 is examined as mutual capacitance When the emission electrode of survey pattern, the variation of liquid crystal capacitance Clc can lead to receiving electricity of the public electrode 109 with mutual capacitance detection pattern Capacitance between pole changes.
Not only when public electrode 109 is used as touch detection electrode, the liquid crystal deflection under different gray scale voltages, which can be given, to be touched It touches detection and brings interference, be used as certainly when using the independent touch detection electrode formed on first substrate 100 or second substrate When the detecting electrode of capacitance or the emission electrode of mutual capacitance, independent touch detection electrode (detecting electrode in mutual capacitance or hair Radio pole) it can be formed by liquid crystal as dielectric dynamic capacity, the dynamic with pixel electrode 102 or public electrode 109 etc. Capacitance can also change with the variation of the liquid crystal deflection under different gray scale voltages, since touch detection electrode is the dynamic capacity The common electrode plate of detected capacitance is detected with self-capacitance or mutual capacitance, the variation of the dynamic capacity also results in self-capacitance Or the measured value of the detected capacitance of mutual capacitance detection changes, to can also bring interference to touch detection.
In order to reduce the interference, the driving circuit of touch control display apparatus of the present invention can be to the feedback of touch control unit 201 Touch control unit detection capacitance is modified, to improve the precision of touch detection.
Specifically, with reference to figure 4, the relational graph of modules in the driving circuit of touch control display apparatus of the present invention is shown.
Drive module 402, for driving the touch display unit to carry out touch sensible.
Display module 401, for applying gray scale voltage to each display unit, to drive the touch control display apparatus to carry out figure As display.
Analysis module 403 detects touch control unit the influence coefficient of capacitance for storing different gray scale voltages, and stores There is the display unit that there are different relative position relations from touch control unit to detect the weighing factor of capacitance to touch control unit.
The analysis module 403 can according to receive the transmission of display module 401 come be currently applied to each display unit Gray scale voltage obtains the influence coefficient that each display unit currently detects touch control unit capacitance, according to acquired influence system Number and with the weighing factor that is stored, obtain the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage Son, and the modifying factor obtained according to current display image, carry out the measured value of the next touch sensible of the transmission of drive module 402 It corrects, obtains more accurate touch control unit detection capacitance.
Specifically, in the present embodiment, the analysis module 403 includes：
First memory module 404A, the first memory module 404A is for being stored with different gray scale voltages to touch control unit Detect the influence coefficient of capacitance.
Second memory module 404B, the second memory module 404B storages with have touch control unit with different relative positions The display unit of relationship detects touch control unit the weighing factor of capacitance.
Correcting module 405, the correcting module 405 and the drive module 402, display module 401, the first memory module 404A and the second memory module 404B is connected, the gray scale voltage for being applied to each display unit according to display module 401, from institute It states the first memory module 404A and obtains the influence coefficient that gray scale voltage detects touch control unit capacitance, and stored from described second Module 404B obtains the weighing factor that each display unit detects touch control unit capacitance, according to acquired influence coefficient and Weighing factor obtains the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage, and according to current display The detection capacitance that the modifying factor that image obtains obtains drive module 402 is modified.
But whether the present invention is divided into the first memory module 404A, the second memory module 404B to the analysis module 403 It is not limited with correcting module 405, in other embodiments, the analysis module 403 can also be the module of an entirety.
In the present embodiment, be stored in the first memory module 404A including each gray scale voltage and with the ash The corresponding look-up table for influencing coefficient of rank voltage.Such as when 256 different grayscale can be loaded on each display unit When voltage, the look-up table can be expressed as table [0~255].
Before storage includes each gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage, need Obtain influence coefficient corresponding with gray scale voltage.In conjunction with reference to figure 3, Fig. 5, Fig. 5 is a touch control unit 201 and its week in Fig. 3 The schematic diagram of side display unit 301.It should be noted that in the present embodiment, the touch detection electrode of touch control unit 201 is tactile The public electrode for multiple display units 301 that 201 region of unit includes is controlled, in Figure 5 201 position of touch control unit Including multiple unshowned display units 301, similarly, multiple touch control units 201 are illustrated only in figure 3, in first substrate Further include multiple unshowned display units 301 on 100.
In the present embodiment, influence coefficient corresponding with gray scale voltage can be obtained by testing：
Apply all display units 301 of the gray scale voltage to touch control display apparatus frame by frame, wherein for same frame, apply Same gray scale voltage gives all display units 301, for different frame, applies different gray scale voltages to all display units 301.
In every frame applies the step of gray scale voltage is to all display units 301, detection is located in touch control display apparatus The detection capacitance of the touch control unit 201 of heart position detects capacitance to obtain from the corresponding touch control unit of different gray scale voltages Value.
It should be noted that in the present embodiment, gate driving circuit 106 is line by line to the film of display unit 301 crystalline substance Body tube grid applies scanning voltage, i.e., opens the thin film transistor (TFT) of a line every time, and the display unit 301 of a line is made to load grayscale electricity Pressure.So line by line in touch control display apparatus often row display unit 301 all complete apply gray scale voltage so that touch-control display dress Set the step of capable of showing a width complete picture, commonly referred to as a frame.Apply gray scale voltage frame by frame to touch control display apparatus All display units 301 refer to the display for making touch control display apparatus carry out multiframe picture.For same frame, apply same ash Rank voltage gives all display units 301, refers in each frame picture, the gray scale voltage applied on all display units 301 It is identical.For different frame, applies different gray scale voltages to all display units 301, refer in different frame picture, apply It is different to the gray scale voltage of display unit 301.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units, in institute When having display unit 301 to apply same gray scale voltage, each three sub-pixel units of the display unit 301 apply same Gray scale voltage.
After acquisition detects capacitance from the corresponding touch control unit of different gray scale voltages, with a preset gray scale voltage pair The touch control unit detection capacitance answered detects capacitance as reference capacitance value, based on the corresponding touch control unit of different gray scale voltages With the relationship of the reference capacitance value, the influence coefficient that different gray scale voltages detect touch control unit capacitance is obtained.
For example, in the picture of different frame, each display unit 301 loads multiple arrive different grayscale greatly from childhood When voltage, the corresponding touch control unit detection capacitance of multiple gray scale voltages can be measured respectively, with maximum touch control unit Capacitance is detected as reference capacitance value, based on the corresponding touch control unit detection capacitance of different gray scale voltages and benchmark electricity The relationship of capacitance obtains the influence coefficient that different gray scale voltages detect touch control unit capacitance, the influence coefficient being achieved in that Maximum value be 1, convenient for calculate.But whether the present invention is to using maximum touch control unit detection capacitance as reference capacitance value It is not limited.
It should be noted that influencing coefficient only reflects that different gray scale voltages detect touch control unit the influence of capacitance, but It is to have the display unit 301 of different location relationship to touch control unit with touch control unit 201 during obtaining influence coefficient The influence for detecting capacitance is different, and the display unit 301 in order to reduce different location is interfered caused by obtaining influence coefficient, this In embodiment, in carrying out obtaining the experiment for influencing coefficient corresponding with gray scale voltage, under each frame picture, touch-control is shown 301 ground of all display units of device applies identical gray scale voltage, under different frame picture, applies not to display unit 301 Same gray scale voltage.Such as each display unit 301 can apply from grayscale【0】To grayscale【255】Totally 256 gray scale voltages, When the gray scale voltage for needing to detect is grayscale【0】When, so that touch control display apparatus is carried out the display of first frame picture, is drawn in first frame In face, all display units 301 is made to apply grayscale【0】Gray scale voltage, and detect be now placed in touch control display apparatus center The touch control unit of the touch control unit 201 of position detects capacitance.Assume that touch control display apparatus includes the touch control unit of 9 rows 9 row When 201, the touch control unit 201 arranged positioned at the 5th row the 5th of touch control display apparatus can be detected in grayscale【0】Gray scale voltage under Touch control unit detects capacitance.Since the size of touch control unit 201 is much smaller than the size of touch control display apparatus, and all displays The gray scale voltage of unit 301 is grayscale【0】, it is believed that detect at this time touch control unit detection capacitance only with grayscale 【0】Related, to make the influence coefficient of acquisition only reflect, different gray scale voltages detect touch control unit the influence of capacitance.When need The gray scale voltage to be detected is grayscale【1】When, so that touch control display apparatus is carried out the display of the second frame picture, in the second frame picture In, so that all display units 301 is applied grayscale【1】Gray scale voltage, and detect be now placed in touch control display apparatus centre bit The touch control unit for the touch control unit 201 set detects capacitance ... method described above, until obtaining corresponding to 256 gray scale voltages Touch control unit detects capacitance.
It should be noted that the size due to touch control unit 201 is much smaller than the size of touch control display apparatus, drawn in each frame Under face, when applying identical gray scale voltage to all display units 301 of touch control display apparatus, in touch control display apparatus center Multiple touch control units detection capacitance near domain is essentially identical, the touch control unit near touch control display apparatus fringe region 201 are also not much different with the touch control unit of the touch control unit 201 in touch control display apparatus near central regions detection capacitance, because When this present invention to applying all display unit 301 of the gray scale voltage to touch control display apparatus frame by frame, if detection is located at touch-control The touch control unit detection capacitance of display device center touch control unit 201 does not limit, in other embodiments, can be with Detection detects capacitance positioned at the touch control unit of touch control display apparatus other positions touch control unit 201.
The second memory module 404B is used to store the display list for having different relative position relations from touch control unit 201 The weighing factor of 301 pairs of touch control unit detection capacitances of member.
Storage has the display list of different relative position relations from touch control unit 201 in the second memory module 404B Before the weighing factor of 301 pairs of touch control unit detection capacitances of member, need to have with each touch control unit 201 by testing to obtain The display unit 301 of different relative position relations detects touch control unit the weighing factor of capacitance.
The weighing factor only reflects display unit 301 due to right with different position relationships from touch control unit 201 Touch control unit detects Different Effects caused by capacitance.With continued reference to Fig. 5, in the present embodiment, by testing acquisition and touch-control Unit 201 has the weighing factor that the display unit 301 of different relative position relations detects touch control unit capacitance：
In the present embodiment, using the one of touch control unit 201 of touch control display apparatus as experiment touch control unit.Positioned at tactile Display unit 501 centered on the display unit 301 at 201 center of control unit.
It should be noted that 81 display units 301 centered on center display unit 501 are illustrated only in Figure 5, The touch control display apparatus further includes multiple display units in addition to display unit 301 shown in Fig. 5.Touch-control list in Figure 5 First 201 positions include 25 display units 301, but the present invention includes display unit 301 in position to touch control unit 201 Quantity be not limited, in other embodiments, 201 position of touch control unit may include any number of display unit 301。
In the present embodiment, the shape of the touch control unit 201 is rectangle, but the present invention is to the shape of touch control unit 201 Shape is not limited, and in other embodiments, the shape of the touch control unit 201 can also be circle or other shapes.It needs Bright, the shape of the touch control unit 201 is rectangle or circle, refer to the shape of touch control unit 201 be similar to rectangle or Circle might not be limited to accurate rectangle or circle.For example, the shape of the touch control unit 201 can be multiple strips The figure for being similar to rectangle that is formed of public electrode.
The experiment of coefficient is influenced according to different gray scale voltages correspondences are measured, records the first gray scale voltage, first grayscale The corresponding influence coefficient of voltage is maximum, records the second gray scale voltage, corresponding the influences coefficient minimum of second gray scale voltage.
Region division is carried out to array of display cells, using the central point of touch control unit 201 as inspection center, described in selection Display unit 501 centered on the display unit 301 of inspection center's face position, centered on the center display unit 501, Delimitation includes the first reference zone of one or more display units 301, to the display unit 301 in first reference zone Apply the first gray scale voltage, the second gray scale voltage is applied to remaining display unit 301 outside the first reference zone, to touch control unit 201 carry out touch control capacitance detection, the touch control unit measured at this time are detected capacitance to obtain, and as the first detection capacitance Value.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit 301 in second reference zone is more than the The quantity of display unit 301 in one reference zone applies the first grayscale to the display unit 301 in second reference zone Voltage, applies the second gray scale voltage to remaining display unit 301 outside the second reference zone, and touch-control is carried out to touch control unit 201 Capacitance detecting, using the touch control unit measured at this time detection capacitance as the second detection capacitance.
The first detection capacitance and the second detection capacitance are brought into weight equation, using the numerical value of acquisition as in the second ginseng The weighing factor of multiple display units 301 within the domain of examination district and except the first reference zone.
Capacitance is detected to touch control unit in order to make the weighing factor of acquisition preferably react different position of display unit It influences, the shape of the first reference zone, the second reference zone that make delimitation is close with the shape of touch control unit 201.In this implementation Example in, the first reference zone, the second reference zone be centered on the center display unit 501, including multiple displays singly The referential array of member 301, the line number and columns of referential array are equal, but the present invention to the line number and columns of referential array whether It is equal not to be limited, the shape of reference zone is not also limited.
In the present embodiment, all on display units of the touch control unit detection capacitance with more apparent influence to obtain 301 weighing factor needs repeatedly delimit the first reference zone and the second reference zone, obtain the first detection capacitance and The step of second detection capacitance, wherein the second reference zone delimited every time is as the first reference zone delimited next time, The obtain every time first detection capacitance and the second detection capacitance are brought into weight equation, to delimit the first reference area every time After domain and the second reference zone, multiple display lists within the second reference zone and except the first reference zone are obtained The weighing factor of member.
Specifically, first using center display unit 501 as the range of the first initial reference zone, center display unit 501 area is the initial value of the first reference zone area, i.e., the line number and columns of initial referential array are 1, to center Display unit 501 applies the first gray scale voltage, applies the second grayscale to remaining display unit 301 outside center display unit 501 Voltage carries out touch control capacitance detection to touch control unit 201, and capacitance is detected as the first detection using the touch control unit measured at this time Capacitance.The area of records center display unit 501, as the first parameter.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit in second reference zone is more than the first ginseng The quantity of display unit in the domain of examination district.Specifically, make second reference zone be centered on center display unit 501, Include the first referential array 502 of 9 display units 301, the line number and columns of first referential array 502 are 3, first Referential array 502 includes center display unit 501 and surrounds 8 display units 301 of center display unit 501.Record the The area of one referential array 502, as the second parameter.
To in the first referential array 502 display unit 301 apply the first gray scale voltage, to the first referential array 502 outside Remaining display unit 301 apply the second gray scale voltage, to touch control unit 201 carry out touch control capacitance detection, by what is measured at this time Touch control unit detects capacitance as the second detection capacitance.
Second gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as third parameter.
First gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as the 4th parameter.
By first parameter, the second parameter, third parameter, the 4th parameter, the first detection capacitance and the second detection electricity Capacitance brings weight equation into together, to obtain 8 displays within the second reference zone and except the first reference zone The weighing factor of unit 301.
It should be noted that in the present embodiment, for convenience of calculating, the weighing factor of different display units 301 can be made Respectively less than or equal to 1.Influence due to 501 position of center display unit to the touch control detection capacitance of touch control unit 201 Maximum, therefore, in the present embodiment, the weighing factor of default center display unit 501 is 1.But the present invention to whether will in The weighing factor of heart display unit 501 is set as 1 and is not limited, and can also set the weighing factor of center display unit 501 For other numerical value.
In the present embodiment, the weight equation is：
Y=(C2-C1)/[(Cmax-Cmin) * (area2-area1)].
Wherein, y weighing factors, C2 are the second detection capacitance, and C1 is the first detection capacitance, and Cmax is the 4th parameter, Cmin is third parameter, and area2 is the second parameter, and area1 is the first parameter.
It should be noted that according to the weight equation in the present embodiment, obtained weighing factor and the first detection capacitance Value, the second detection capacitance are related；Also and the difference of the area of the first reference zone and the second reference zone is related, therefore according to this The weighing factor that the weight equation of embodiment obtains more can accurately be reacted has different location relationship with touch control unit 201 Display unit 301 to touch control unit detect capacitance influence.But the present invention does not limit the concrete form of weight equation System, in other embodiments, weight equation can also only include that the first detection capacitance and second detect two parameters of capacitance, Or including the first detection capacitance, the second detection capacitance, third parameter, the 4th parameter totally four parameters.It is any to weight side The change of journey concrete form is within the scope of the present invention.
Since the shape of reference zone is close with the shape of touch control unit 201, in the present embodiment, it can be considered that The weighing factor of multiple display units 301 is all identical within second reference zone and except the first reference zone.
In the present embodiment, in the above described manner, it carries out repeatedly delimiting the first reference zone and the second reference zone, and obtains It the step of first detection capacitance and the second detection capacitance, delimited next time wherein the second reference zone delimited every time is used as The first reference zone, by obtain every time first detection capacitance and second detection capacitance bring weight equation into, with obtain Delimit after the first reference zone and the second reference zone every time, within the second reference zone and the first reference zone it The weighing factor of outer multiple display units.
Such as in the present embodiment, it is the first reference zone, the first referential array 502 delimiting center display unit 501 For the second reference zone and then it is primary carry out delimiting the first reference zone and the second reference zone, and obtain the first detection electricity The step of capacitance and the second detection capacitance.In this first reference zone of delimitation and the step of the second reference zone, with the One referential array 502 is the first reference zone, with the second referential array 503 for the second reference zone.Second referential array 503 centered on center display unit 501, including 16 of the first referential array 502 of the first referential array 502 and encirclement are aobvious Show unit 301.The area for recording the first referential array 502 records the area of the second referential array 503 as the first parameter, makees For the second parameter.By the first detection capacitance obtained after this first reference zone of delimitation and the second reference zone, the second inspection It surveys capacitance, the first parameter, the second parameter and third parameter, the 4th parameter and brings weight equation into together, obtain in the second ginseng The weighing factor of 16 display units 301 within the domain of examination district and except the first reference zone.
It should be noted that in the present embodiment, the first reference zone and the second reference zone are referential array, and with First reference zone is compared, and the line number and columns of the referential array of the second reference zone increase by 2.
It should be noted that the present invention is not limited the range of the first initial reference zone, in other embodiments, It can also be using the first referential array 502 or even the referential array of bigger as the first initial reference zone.The present invention couple and the One reference zone is compared, and the increased quantity of line number and columns of the referential array of the second reference zone is not also limited, at other In embodiment, compared with the first reference zone, the line number of the referential array of the second reference zone and the increase number of columns can be with For the numerical value of 2 integral multiple.
It should also be noted that, in other embodiments, when the shape of the touch control unit 201 is round, described the One reference zone, the second reference zone can be including multiple display units centered on the center display unit 501 301 display unit set.The outermost multiple display units 301 of display unit set arrive center display unit 501 Apart from equal.In this way, the shape of display unit set is also approximately round.The radius of second reference zone is more than the first reference area The radius in domain.
It should also be noted that, in the present embodiment, each display unit 301 includes three sub-pixel units, is being carried out When obtaining the experiment of weighing factor, the gray scale voltage applied on three sub-pixel units of each display unit 301 is identical.
Since the weighing factor that distance tests the display unit 301 of the inspection center of touch control unit farther out is smaller, to touching When control unit detection capacitance is modified, such minor impact weight can be ignored.Therefore, in the present embodiment, When carrying out obtaining the experiment of weighing factor, it can include the sampling area of multiple display units 301 in foundation, be adopted positioned at described Display unit in sample region is greater than or equal to the display unit being located at outside the sampling area to the weighing factor of touch control unit To the weighing factor of touch control unit.In acquisition sampling area after the weighing factor of display unit 301, it is single to ignore remaining display The influence of first 301 pairs of touch control detection capacitances, stores the display unit in the sampling area in the second memory module 404B The weighing factor of 301 pairs of experiment touch control units.
Specifically, the step of establishing sampling area can carry out with the experimental synchronous for obtaining weighing factor：
Using the area of center display unit 501 as the initial value of the first reference zone area, carry out repeatedly delimiting first The step of reference zone and the second reference zone, wherein the second reference zone delimited every time is as the first ginseng delimited next time Examination district domain；
Using the area for the first reference zone delimited every time as the first parameter；
Using the area for the second reference zone delimited every time as the second parameter；
After delimiting the first reference zone and the second reference zone every time, the first detection capacitance is obtained to the second detection First detection capacitance and the difference of the second detection capacitance divided by first are detected capacitance by capacitance, and the value of acquisition is as the Five parameters；
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter；
When the 5th parameter is less than or equal to seven parameters, using reference zone at this time as sampling area.
Specifically, with continued reference to Fig. 5, with the second referential array 503 of delimitation for the first reference zone, third referential array 504 is for the second reference zones, and the third referential array 504 is centered on center display unit 501, including described second Referential array 503 and 24 display units 301 for surrounding second referential array 503.
Using the area of the second referential array 503 as the first parameter, using the area of third referential array 504 as the second ginseng Amount.
Delimit the second referential array 503 be the first reference zone, third referential array 504 be the second reference zone it Afterwards, by the difference divided by the first detection capacitance of the first detection capacitance and the second detection capacitance, the value of acquisition is as the 5th ginseng Amount.
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter, this predetermined coefficient can 0.01 to 0.4 model In enclosing, the 5th parameter and the 7th parameter are compared in this way, can more accurately reflect delimit again every time the first reference zone and Second reference zone, and the second reference zone that the last time delimited is as when the first reference zone delimited next time, touch-control Unit detects the relationship between the variable quantity and the second reference zone area change amount of capacitance, but the present invention is to predetermined coefficient Concrete numerical value be not limited.
When the 5th parameter is less than or equal to seven parameters, using the second current reference zone as sampling area, that is, adopt Sample region is the third referential array 504 for including 49 display units.Except the range of sampling area, with referential array face Long-pending increase delimit the touch control detection capacitance variation measured after the first reference zone and the second reference zone very again every time It is small, display unit 301 except the range of sampling area can ignore to touch control detection capacitance as noise.
It should be noted that in the present embodiment, using third referential array 504 as sampling area, but sampling area Depending on included range is with actual conditions.It is generally desirable to carry out repeatedly delimiting the first reference zone and the second reference area Domain, and the step of the second reference zone that the last time delimited delimited as the first reference zone delimited next time, with determination The range of sampling area.
It, can also be with when the 5th parameter is less than or equal to seven parameters it should also be noted that, in other embodiments First reference zone is the second referential array 503 as sampling area, i.e. sampling area.
It, can be with above-mentioned for other touch control units 201 in addition to above-mentioned experiment touch control unit in touch control display apparatus Method tests each touch control unit 201, obtains 201 corresponding weighing factor of each touch control unit and sampling area.It is right It in ordinary circumstance, simply, can also record in above-mentioned experiment, test every in the sampling area and sampling area of touch control unit The sampling area identical faces of touch control unit can be established and be tested to the weighing factor of a display unit 301, other touch control units 201 Long-pending sampling area, and the weighing factor of each display unit 301 in the sampling area for testing touch control unit is extrapolated to other and is touched It controls in unit, the influence power of display unit 301 in the sampling area and sampling area to obtain other touch control units 201 Weight.
It should be noted that under normal conditions, the size of the sampling area of multiple touch control units 201 is identical, still In the boundary of touch control display apparatus, due to the limitation on boundary, the sampling area area of boundary touch control unit 201 is likely less than The sampling area area of the touch control unit 201 at position among touch control display apparatus.Sampling area can be done as the case may be Corresponding adjustment, for example, touch control display apparatus boundary using with the comparable reference zone of 201 size of touch control unit as adopting The maximum area that sample region can reach is similar to this subtle adjustment within the scope of the present invention.
It is a aobvious in 201 corresponding sampling area of each touch control unit and sampling area in obtaining touch control display apparatus After the weighing factor for showing unit 301,201 corresponding sampling area of each touch control unit is stored in the second memory module 404B And in sampling area display unit 301 weighing factor.
Analysis module 403 in touch control display apparatus through the invention, the amendment that can be obtained according to current display image Factor pair touch control unit detection capacitance is modified.
The analysis module 403 can according to receive display module 401 transmission come be currently applied to each display unit 301 Gray scale voltage, obtain each display unit 301 currently to touch control unit detect capacitance influence coefficient, according to acquired shadow It rings coefficient and with the weighing factor that is stored, the touch control unit for obtaining each touch control unit 201 detects capacitance by the grayscale The modifying factor of voltage influence, and the touch-control list that touch control unit 201 is fed back according to the modifying factor that current display image obtains Member detection capacitance is modified.
Specifically, in the present embodiment, the course of work that touch control display apparatus carries out touch detection is as follows：
With continued reference to Fig. 5, display module 401 applies gray scale voltage to each display unit 301, to drive the touch-control to show Device performs image display.In the present embodiment, using public electrode 109 as the touch detection electrode of self-capacitance detection pattern, It needs to do time-sharing multiplex to public electrode 109, when touch control display apparatus performs image display, shows and finish in a frame image, Before another frame image is shown, the gray scale voltage for being applied to each display unit 301 is transferred to described point by the display module 401 The correcting module 405 in module 403 is analysed, the correcting module 405 is adjusted according to the gray scale voltage for being applied to each display unit 301 With the look-up table being stored in the first memory module 404A, to obtain currently the touching to touch control unit 201 of each display unit 301 The influence coefficient of unit detection capacitance is controlled, and each display unit 301 is currently detected into electricity to the touch control unit of touch control unit 201 The influence coefficient of capacitance forms the first matrix.
The correcting module 405 can obtain opposite with the touch control unit 201 from the second memory module 404B The display unit 301 in the sampling area answered forms the second matrix to the weighing factor of touch control unit 201.
In the correcting module 405, by each of described first matrix influence in coefficient and the second matrix with influence Coefficient is multiplied with the weighing factor of position, obtains the third matrix being made of multiple correction factors, with number in the third matrix The sum of value is used as modifying factor.
So that the drive module 402 is worked, the touch display unit is driven to carry out touch sensible, is schemed according to current display The modifying factor that picture obtains is modified the measured value of touch sensible, in the present embodiment, the measured value of the touch sensible The touch control unit detection capacitance detected on each touch control unit 201.
Specifically, in the present embodiment, when drive module 402 drives the touch display unit to carry out touch sensible, Using the touch control unit of each touch control unit 201 detect the measured value modifying factor corresponding with each touch control unit 201 of capacitance as Parameter brings capacitance into and repairs equation, obtains capacitance after the amendment of each touch control unit 201, and capacitance is as actual using after amendment Touch control unit detects capacitance.
Liquid crystal deflection caused by capacitance eliminates different gray scale voltages after amendment detects capacitance to touch control unit The influence of measured value can more realistically reflect the variation of touch control unit detection capacitance when finger touches, tactile to improve Touch the precision of detection.
It should be noted that whether the present invention when touch control display apparatus is performed image display in a frame image to showing It finishes, another frame image carries out touch detection before showing and is not limited.In other embodiments, image is shown and touch detection It can also be carried out at the same time.
For example, in other embodiments, the touch control display apparatus includes the first display area and the second display area, the One display area and the second display area respectively include multiple display units 301, and corresponding with multiple display units 301 more A touch control unit 201.
Display module 401 applies gray scale voltage to each display unit 301, to drive the touch control display apparatus to carry out image The step of display includes：The charging of each display unit 301 finishes when performing image display in the first display area, applies grayscale electricity It is depressed into each display unit 301 of the second display area, to drive the second display area to perform image display.
The gray scale voltage of display unit 301 is stablized in the first display area at this time, can be according to being applied to the first viewing area The gray scale voltage of each display unit 301 in domain, obtain the first display area in each display unit 301 currently to the first display area In each touch control unit 201 touch control unit detection capacitance influence coefficient, and further touched by drive module 402 Detection, and touch control unit detects capacitance after being corrected.In this way to the touch detection of the touch control unit 201 of the first display area It shows and can be carried out at the same time with the image of each display unit 301 of the second display area.It should be noted that when the first viewing area When the gray scale voltage of display unit 301 is stablized in domain, it can be shown in the image of each display unit 301 of the second display area 301 image of each display unit is shown and 301 image of each display unit of the second display area in Cheng Zhong or the first display area In time between display, each display unit 301 is currently to each touch-control list in the first display area in the first display area of acquisition The influence coefficient of the touch control unit detection capacitance of member 201.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units：It is red Sub-pixel unit, green sub-pixels unit, blue subpixels unit.Since three sub-pixel units are extremely tiny and close row Row, it is believed that three sub-pixel units it is identical to 201 weighing factor of touch control unit, can respectively be obtained by searching for table red The corresponding influence coefficient of sub-pixels unit, green sub-pixels unit, blue subpixels unit is influenced with three sub-pixel units The average value of coefficient detects touch control unit as display unit 301 the influence coefficient of capacitance.Assuming that three sub-pixel units Gray scale voltage be respectively grayscale [R], grayscale [G], grayscale [B], the influence system that each display unit 301 obtains by searching for table Number is (table [R]+table [G]+table [B])/3.
In other embodiments, the influence coefficient of each sub-pixel unit in sampling area can also be obtained respectively, formed 4th matrix stores the weighing factor of each sub-pixel unit in sampling area, the 5th matrix is formed, by institute in a storage module It states each of the 4th matrix influence coefficient to be multiplied with the weighing factor of position with influence coefficient with the 5th matrix, obtain by more 6th matrix of a correction factor composition, using the sum of numerical value in the 6th matrix as modifying factor.The 6th matrix packet The correction factor contained be three times of the correction factor that third matrix includes, calculated modifying factor compared in third matrix Modifying factor is more accurate, but required calculation amount is larger.
It should be noted that due in the present embodiment, the touch control display apparatus includes being bundled on first substrate 100 Display touch detection chip (not shown), it is described display touch detection chip in the built-in driving circuit display module 401, drive module 402 and analysis module 403.It can be by showing between display module 401, drive module 402 and analysis module 403 Show touch detection chip controls, influences coefficient, weighing factor, grayscale by showing that touch detection chip is easily exchanged and transmitted The information such as voltage, but whether the present invention is integrated in a display to display module 401, drive module 402 and analysis module 403 It is not limited in touch detection chip.In other embodiments, the touch control display apparatus can also include display driver chip With touch detection chip, the display module 401 of the built-in driving circuit, the touch detection core in the display driver chip The drive module 402 and analysis module 403 of the built-in driving circuit, the display driver chip and touch detection chip in piece It is bundled on first substrate 100.In the above-described embodiments, due to display module 401 and drive module 402, analysis module 403 It is located on two chips, it is therefore desirable to which other processing chips (such as central processing unit) are to the display driver chip and touch Detection chip is controlled so that can exchange and transmit shadow between display module 401 and drive module 402, analysis module 403 Ring the information such as coefficient, weighing factor, gray scale voltage.
The present invention also provides a kind of driving circuit of touch control display apparatus, which includes for realizing touch-control Multiple touch control units of induction and multiple display units for being shown for realizing image, the touch control display apparatus include but unlimited In the touch control display apparatus that aforementioned present invention provides.By detection when finger touches touch control display apparatus, touch control unit touches It controls unit and detects capacitance variation, realize touch detection.
Can include with continued reference to Fig. 4, the driving circuit：
Drive module 402, for driving the touch display unit to carry out touch sensible.
Display module 401, for applying gray scale voltage to each display unit 301, with drive the touch control display apparatus into Row image is shown.
Analysis module 403, the analysis module 403 are stored with the shadow that different gray scale voltages detect touch control unit capacitance Coefficient is rung, and is stored with display unit 301 of the touch control unit with different relative position relations and capacitance is detected to touch control unit Weighing factor.
The analysis module 403 can according to receive the transmission of display module 401 come be currently applied to each display unit Gray scale voltage obtains the influence coefficient that each display unit currently detects touch control unit capacitance, according to acquired influence system Number and with the weighing factor that is stored, obtain the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage Son, and the modifying factor obtained according to current display image, carry out the measured value of the next touch sensible of the transmission of drive module 402 It corrects, obtains more accurate touch control unit detection capacitance.
Make the variation of revised touch control unit detection capacitance that can accurately react finger to touch control display apparatus It touches.
Can be touching using liquid crystal display panel as display portion with continued reference to Fig. 3 to Fig. 5, the touch control display apparatus Control display device.The touch control display apparatus includes first substrate 100, second substrate (not shown) and is set to first substrate 100, the liquid crystal layer between second substrate, the display unit 301 are set on the first substrate 100 or second substrate, institute Touch control unit 201 is stated to be set on the first substrate 100 or second substrate.Touch of the present invention to the touch control unit 201 Detection pattern is not limited, and the touch control unit 201 can carry out touch detection with self-capacitance or the pattern of mutual capacitance.It is each to touch It may include multiple display units 301 to control 201 region of unit.
As described in touch control display apparatus embodiment provided by the invention, the different grayscale that are applied on display unit 301 Liquid crystal deflection caused by voltage is different, can influence the touch control unit detection capacitance of the touch control unit 201.
Analysis module 403 in the driving circuit provided through the invention can correct touch control unit detection capacitance, obtain Capacitance is detected to the touch control unit not interfered by gray scale voltage, and then improves the precision of touch control display apparatus.
Specifically, in the present embodiment, the analysis module 403 includes：
First memory module 404A, the first memory module 404A is for being stored with different gray scale voltages to touch control unit Detect the influence coefficient of capacitance.
Second memory module 404B, the second memory module 404B storages with have touch control unit with different relative positions The display unit of relationship detects touch control unit the weighing factor of capacitance.
Correcting module 405, the correcting module 405 and the drive module 402, display module 401, the first memory module 404A and the second memory module 404B is connected, the gray scale voltage for being applied to each display unit according to display module 401, from institute It states the first memory module 404A and obtains the influence coefficient that gray scale voltage detects touch control unit capacitance, and stored from described second Module 404B obtains the weighing factor that each display unit detects touch control unit capacitance, according to acquired influence coefficient and Weighing factor obtains the modifying factor that each touch control unit detection capacitance is influenced by the gray scale voltage, and according to current display The modifying factor that image obtains is modified the detection capacitance that drive module obtains.
In the present embodiment, be stored in the first memory module 404A including each gray scale voltage and with the ash The corresponding look-up table for influencing coefficient of rank voltage.Such as when 256 different grayscale can be loaded on each display unit When voltage, the look-up table can be expressed as table [0~255].
Before storage includes each gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage, need Obtain influence coefficient corresponding with gray scale voltage.In conjunction with reference to figure 3, Fig. 5, Fig. 5 is a touch control unit 201 and its week in Fig. 3 The schematic diagram of side display unit 301.In the present embodiment, influence coefficient corresponding with gray scale voltage is obtained by testing：
Apply all display units 301 of the gray scale voltage to touch control display apparatus frame by frame, wherein for same frame, apply Same gray scale voltage gives all display units 301, for different frame, applies different gray scale voltages to all display units 301.
In every frame applies the step of gray scale voltage is to all display units 301, detection is located in touch control display apparatus The detection capacitance of the touch control unit 201 of heart position detects capacitance to obtain from the corresponding touch control unit of different gray scale voltages Value.
It should be noted that in the present embodiment, touch control display apparatus shows that the mode of picture is：Make display list line by line Member 301 loads gray scale voltage.So line by line in touch control display apparatus often row display unit 301 all complete apply grayscale electricity Pressure so that touch control display apparatus can show a step of width complete picture, commonly referred to as a frame.Apply gray scale voltage frame by frame To all display units 301 of touch control display apparatus, the display for making touch control display apparatus carry out multiframe picture is referred to.For same One frame applies same gray scale voltage to all display units 301, refers in each frame picture, on all display units 301 The gray scale voltage of application is identical.For different frame, applies different gray scale voltages to all display units 301, refer to not In picture at same frame, the gray scale voltage for being applied to display unit 301 is different.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units, in institute When having display unit 301 to apply same gray scale voltage, each three sub-pixel units of the display unit 301 apply same Gray scale voltage.
After acquisition detects capacitance from the corresponding touch control unit of different gray scale voltages, with a preset gray scale voltage pair The touch control unit detection capacitance answered detects capacitance as reference capacitance value, based on the corresponding touch control unit of different gray scale voltages With the relationship of the reference capacitance value, the influence coefficient that different gray scale voltages detect touch control unit capacitance is obtained.
For example, in the picture of different frame, each display unit 301 loads multiple arrive different grayscale greatly from childhood When voltage, the corresponding touch control unit detection capacitance of multiple gray scale voltages can be measured respectively, with maximum touch control unit Capacitance is detected as reference capacitance value, based on the corresponding touch control unit detection capacitance of different gray scale voltages and benchmark electricity The relationship of capacitance obtains the influence coefficient that different gray scale voltages detect touch control unit capacitance, the influence coefficient being achieved in that Maximum value be 1, convenient for calculate.But whether the present invention is to using maximum touch control unit detection capacitance as reference capacitance value It is not limited.
It should be noted that influencing coefficient only reflects that different gray scale voltages detect touch control unit the influence of capacitance, but It is to have the display unit 301 of different location relationship to touch control unit with touch control unit 201 during obtaining influence coefficient The influence for detecting capacitance is different, and the display unit 301 in order to reduce different location is interfered caused by obtaining influence coefficient, this In embodiment, in carrying out obtaining the experiment for influencing coefficient corresponding with gray scale voltage, under each frame picture, touch-control is shown 301 ground of all display units of device applies identical gray scale voltage, under different frame picture, applies not to display unit 301 Same gray scale voltage.Such as each display unit 301 can apply from grayscale【0】To grayscale【255】Totally 256 gray scale voltages, When the gray scale voltage for needing to detect is grayscale【0】When, so that touch control display apparatus is carried out the display of first frame picture, is drawn in first frame In face, all display units 301 is made to apply grayscale【0】Gray scale voltage, and detect be now placed in touch control display apparatus center The touch control unit of the touch control unit 201 of position detects capacitance.Assume that touch control display apparatus includes the touch control unit of 9 rows 9 row When 201, the touch control unit 201 arranged positioned at the 5th row the 5th of touch control display apparatus can be detected in grayscale【0】Gray scale voltage under Touch control unit detects capacitance.Since the size of touch control unit 201 is much smaller than the size of touch control display apparatus, and all displays The gray scale voltage of unit 301 is grayscale【0】, it is believed that detect at this time touch control unit detection capacitance only with grayscale 【0】Related, to make the influence coefficient of acquisition only reflect, different gray scale voltages detect touch control unit the influence of capacitance.When need The gray scale voltage to be detected is grayscale【1】When, so that touch control display apparatus is carried out the display of the second frame picture, in the second frame picture In, so that all display units 301 is applied grayscale【1】Gray scale voltage, and detect be now placed in touch control display apparatus centre bit The touch control unit for the touch control unit 201 set detects capacitance ... method described above, until obtaining corresponding to 256 gray scale voltages Touch control unit detects capacitance.
It should be noted that the size due to touch control unit 201 is much smaller than the size of touch control display apparatus, drawn in each frame Under face, when applying identical gray scale voltage to all display units 301 of touch control display apparatus, in touch control display apparatus center Multiple touch control units detection capacitance near domain is essentially identical, the touch control unit near touch control display apparatus fringe region 201 are also not much different with the touch control unit of the touch control unit 201 in touch control display apparatus near central regions detection capacitance, because When this present invention to applying all display unit 301 of the gray scale voltage to touch control display apparatus frame by frame, if detection is located at touch-control The touch control unit detection capacitance of display device center touch control unit 201 does not limit, in other embodiments, can be with Detection detects capacitance positioned at the touch control unit of touch control display apparatus other positions touch control unit 201.
The second memory module 404B is used to store the display list for having different relative position relations from touch control unit 201 The weighing factor of 301 pairs of touch control unit detection capacitances of member.
Storage has the display unit 301 of different relative position relations from touch control unit 201 in the memory module 404 Before the weighing factor for detecting capacitance to touch control unit, need to obtain has different relative positions from each touch control unit 201 The display unit 301 of relationship detects touch control unit the weighing factor of capacitance.
The weighing factor only reflects display unit 301 due to right with different position relationships from touch control unit 201 Touch control unit detects Different Effects caused by capacitance.With continued reference to Fig. 5, in the present embodiment, by testing acquisition and touch-control Unit 201 has the weighing factor that the display unit 301 of different relative position relations detects touch control unit capacitance：
In the present embodiment, using the one of touch control unit 201 of touch control display apparatus as experiment touch control unit.Positioned at tactile Display unit 501 centered on the display unit 301 at 201 center of control unit.
It should be noted that 81 display units 301 centered on center display unit 501 are illustrated only in Figure 5, The touch control display apparatus further includes multiple display units in addition to display unit 301 shown in Fig. 5.Touch-control list in Figure 5 First 201 positions include 25 display units 301, but the present invention includes display unit 301 in position to touch control unit 201 Quantity be not limited, in other embodiments, 201 position of touch control unit may include any number of display unit 301。
In the present embodiment, the shape of the touch control unit 201 is rectangle, but the present invention is to the shape of touch control unit 201 Shape is not limited, and in other embodiments, the shape of the touch control unit 201 can also be circle or other shapes.It needs Bright, the shape of the touch control unit 201 is rectangle or circle, refer to the shape of touch control unit 201 be similar to rectangle or Circle might not be limited to accurate rectangle or circle.For example, the shape of the touch control unit 201 can be multiple strips The figure for being similar to rectangle that is formed of public electrode.
The experiment of coefficient is influenced according to different gray scale voltages correspondences are measured, records the first gray scale voltage, first grayscale The corresponding influence coefficient of voltage is maximum, records the second gray scale voltage, corresponding the influences coefficient minimum of second gray scale voltage.
Region division is carried out to array of display cells, using the central point of touch control unit 201 as inspection center, described in selection Display unit 501 centered on the display unit 301 of inspection center's face position, centered on the center display unit 501, Delimitation includes the first reference zone of one or more display units 301, to the display unit 301 in first reference zone Apply the first gray scale voltage, the second gray scale voltage is applied to remaining display unit 301 outside the first reference zone, to touch control unit 201 carry out touch control capacitance detection, the touch control unit measured at this time are detected capacitance to obtain, and as the first detection capacitance Value.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit 301 in second reference zone is more than the The quantity of display unit 301 in one reference zone applies the first grayscale to the display unit 301 in second reference zone Voltage, applies the second gray scale voltage to remaining display unit 301 outside the second reference zone, and touch-control is carried out to touch control unit 201 Capacitance detecting, using the touch control unit measured at this time detection capacitance as the second detection capacitance.
The first detection capacitance and the second detection capacitance are brought into weight equation, using the numerical value of acquisition as in the second ginseng The weighing factor of multiple display units 301 within the domain of examination district and except the first reference zone.
Capacitance is detected to touch control unit in order to make the weighing factor of acquisition preferably react different position of display unit It influences, the shape of the first reference zone, the second reference zone that make delimitation is close with the shape of touch control unit 201.In this implementation Example in, the first reference zone, the second reference zone be centered on the center display unit 501, including multiple displays singly The referential array of member 301, the line number and columns of referential array are equal, but the present invention to the line number and columns of referential array whether It is equal not to be limited, the shape of reference zone is not also limited.
In the present embodiment, all on display units of the touch control unit detection capacitance with more apparent influence to obtain 301 weighing factor needs repeatedly delimit the first reference zone and the second reference zone, and obtains the first detection capacitance The step of with the second detection capacitance, and using the second reference zone delimited every time as the first reference area delimited next time Into weight equation is brought the obtain every time first detection capacitance and the second detection capacitance in domain, to delimit the first ginseng each After examination district domain and the second reference zone, obtain multiple aobvious within the second reference zone and except the first reference zone Show the weighing factor of unit.
Specifically, first using center display unit 501 as the range of the first initial reference zone, center display unit 501 area is the initial value of the first reference zone area, i.e., the line number and columns of initial referential array are 1, to center Display unit 501 applies the first gray scale voltage, applies the second grayscale to remaining display unit 301 outside center display unit 501 Voltage carries out touch control capacitance detection to touch control unit 201, and capacitance is detected as the first detection using the touch control unit measured at this time Capacitance.The area of records center display unit 501, as the first parameter.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit in second reference zone is more than the first ginseng The quantity of display unit in the domain of examination district.Specifically, make second reference zone be centered on center display unit 501, Include the first referential array 502 of 9 display units 301, the line number and columns of first referential array 502 are 3, first Referential array 502 includes center display unit 501 and surrounds 8 display units 301 of center display unit 501.Record the The area of one referential array 502, as the second parameter.
To in the first referential array 502 display unit 301 apply the first gray scale voltage, to the first referential array 502 outside Remaining display unit 301 apply the second gray scale voltage, to touch control unit 201 carry out touch control capacitance detection, by what is measured at this time Touch control unit detects capacitance as the second detection capacitance.
Second gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as third parameter.
First gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as the 4th parameter.
By first parameter, the second parameter, third parameter, the 4th parameter, the first detection capacitance and the second detection electricity Capacitance brings weight equation into together, to obtain 8 displays within the second reference zone and except the first reference zone The weighing factor of unit 301.
It should be noted that in the present embodiment, for convenience of calculating, the weighing factor of different display units 301 can be made Respectively less than or equal to 1.Influence due to 501 position of center display unit to the touch control detection capacitance of touch control unit 201 Maximum, therefore, in the present embodiment, the weighing factor of default center display unit 501 is 1.But the present invention to whether will in The weighing factor of heart display unit 501 is set as 1 and is not limited, and can also set the weighing factor of center display unit 501 For other numerical value.
In the present embodiment, the weight equation is：
Y=(C2-C1)/[(Cmax-Cmin) * (area2-area1)].
Wherein, y weighing factors, C2 are the second detection capacitance, and C1 is the first detection capacitance, and Cmax is the 4th parameter, Cmin is third parameter, and area2 is the second parameter, and area1 is the first parameter.
It should be noted that according to the weight equation in the present embodiment, obtained weighing factor and the first detection capacitance Value, the second detection capacitance are related；Also and the difference of the area of the first reference zone and the second reference zone is related, therefore according to this The weighing factor that the weight equation of embodiment obtains more can accurately be reacted has different location relationship with touch control unit 201 Display unit 301 to touch control unit detect capacitance influence.But the present invention does not limit the concrete form of weight equation System, in other embodiments, weight equation can also only include that the first detection capacitance and second detect two parameters of capacitance, Or including the first detection capacitance, the second detection capacitance, third parameter, the 4th parameter totally four parameters.It is any to weight side The change of journey concrete form is within the scope of the present invention.
Since the shape of reference zone is close with the shape of touch control unit 201, in the present embodiment, it can be considered that The weighing factor of multiple display units 301 is all identical within second reference zone and except the first reference zone.
In the present embodiment, in the above described manner, it carries out repeatedly delimiting the first reference zone and the second reference zone, and obtains It the step of first detection capacitance and the second detection capacitance, delimited next time wherein the second reference zone delimited every time is used as The first reference zone, by obtain every time first detection capacitance and second detection capacitance bring weight equation into, with obtain Delimit after the first reference zone and the second reference zone every time, within the second reference zone and the first reference zone it The weighing factor of outer multiple display units.
Such as in the present embodiment, it is the first reference zone, the first referential array 502 delimiting center display unit 501 For the second reference zone and then it is primary carry out delimiting the first reference zone and the second reference zone, and obtain the first detection electricity The step of capacitance and the second detection capacitance.In this first reference zone of delimitation and the step of the second reference zone, with the One referential array 502 is the first reference zone, with the second referential array 503 for the second reference zone.Second referential array 503 centered on center display unit 501, including 16 of the first referential array 502 of the first referential array 502 and encirclement are aobvious Show unit 301.The area for recording the first referential array 502 records the area of the second referential array 503 as the first parameter, makees For the second parameter.By the first detection capacitance obtained after this first reference zone of delimitation and the second reference zone, the second inspection It surveys capacitance, the first parameter, the second parameter and third parameter, the 4th parameter and brings weight equation into together, obtain in the second ginseng The weighing factor of 16 display units 301 within the domain of examination district and except the first reference zone.
It should be noted that in the present embodiment, the first reference zone and the second reference zone are referential array, and with First reference zone is compared, and the line number and columns of the referential array of the second reference zone increase by 2.
It should be noted that the present invention is not limited the range of the first initial reference zone, in other embodiments, It can also be using the first referential array 502 or even the referential array of bigger as the first initial reference zone.The present invention couple and the One reference zone is compared, and the increased quantity of line number and columns of the referential array of the second reference zone is not also limited, at other In embodiment, compared with the first reference zone, the line number of the referential array of the second reference zone and the increase number of columns can be with For the numerical value of 2 integral multiple.
It should also be noted that, in other embodiments, when the shape of the touch control unit 201 is round, described the One reference zone, the second reference zone can be including multiple display units centered on the center display unit 501 301 display unit set.The outermost multiple display units 301 of display unit set arrive center display unit 501 Apart from equal.In this way, the shape of display unit set is also approximately round.The radius of second reference zone is more than the first reference area The radius in domain.
It should also be noted that, in the present embodiment, each display unit 301 includes three sub-pixel units, is being carried out When obtaining the experiment of weighing factor, the gray scale voltage applied on three sub-pixel units of each display unit 301 is identical.
Since the weighing factor that distance tests the display unit 301 of the inspection center of touch control unit farther out is smaller, to touching When control unit detection capacitance is modified, such minor impact weight can be ignored.Therefore, in the present embodiment, When carrying out obtaining the experiment of weighing factor, it can include the sampling area of multiple display units 301 in foundation, be adopted positioned at described Display unit in sample region is greater than or equal to the display unit being located at outside the sampling area to the weighing factor of touch control unit To the weighing factor of touch control unit.In acquisition sampling area after the weighing factor of display unit 301, it is single to ignore remaining display The influence of first 301 pairs of touch control detection capacitances, stores the display unit in the sampling area in the second memory module 404B The weighing factor of 301 pairs of experiment touch control units.
Specifically, the step of establishing sampling area can carry out with the experimental synchronous for obtaining weighing factor：
Using the area of center display unit 501 as the initial value of the first reference zone area, carry out repeatedly delimiting first The step of reference zone and the second reference zone, wherein the second reference zone delimited every time is as the first ginseng delimited next time Examination district domain；
Using the area for the first reference zone delimited every time as the first parameter；
Using the area for the second reference zone delimited every time as the second parameter；
After delimiting the first reference zone and the second reference zone every time, the first detection capacitance is obtained to the second detection First detection capacitance and the difference of the second detection capacitance divided by first are detected capacitance by capacitance, and the value of acquisition is as the Five parameters；
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter；
When the 5th parameter is less than or equal to seven parameters, using reference zone at this time as sampling area.
Specifically, with continued reference to Fig. 5, with the second referential array 503 of delimitation for the first reference zone, third referential array 504 is for the second reference zones, and the third referential array 504 is centered on center display unit 501, including described second Referential array 503 and 24 display units 301 for surrounding second referential array 503.
Using the area of the second referential array 503 as the first parameter, using the area of third referential array 504 as the second ginseng Amount.
Delimit the second referential array 503 be the first reference zone, third referential array 504 be the second reference zone it Afterwards, by the difference divided by the first detection capacitance of the first detection capacitance and the second detection capacitance, the value of acquisition is as the 5th ginseng Amount.
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter, this predetermined coefficient can 0.01 to 0.4 model In enclosing, the 5th parameter and the 7th parameter are compared in this way, can more accurately reflect delimit again every time the first reference zone and Second reference zone, and the second reference zone that the last time delimited is as when the first reference zone delimited next time, touch-control Unit detects the relationship between the variable quantity and the second reference zone area change amount of capacitance, but the present invention is to predetermined coefficient Concrete numerical value be not limited.
When the 5th parameter is less than or equal to seven parameters, using the second current reference zone as sampling area, that is, adopt Sample region is the third referential array 504 for including 49 display units.Except the range of sampling area, with referential array face Long-pending increase delimit the touch control detection capacitance variation measured after the first reference zone and the second reference zone very again every time It is small, display unit 301 except the range of sampling area can ignore to touch control detection capacitance as noise.
It should be noted that in the present embodiment, using third referential array 504 as sampling area, but sampling area Depending on included range is with actual conditions.It is generally desirable to carry out repeatedly delimiting the first reference zone and the second reference area Domain, and the step of the second reference zone that the last time delimited delimited as the first reference zone delimited next time, with determination The range of sampling area.
It, can also be with when the 5th parameter is less than or equal to seven parameters it should also be noted that, in other embodiments First reference zone is the second referential array 503 as sampling area, i.e. sampling area.
It, can be with above-mentioned for other touch control units 201 in addition to above-mentioned experiment touch control unit in touch control display apparatus Method tests each touch control unit 201, obtains 201 corresponding weighing factor of each touch control unit and sampling area.It is right It in ordinary circumstance, simply, can also record in above-mentioned experiment, test every in the sampling area and sampling area of touch control unit The sampling area identical faces of touch control unit can be established and be tested to the weighing factor of a display unit 301, other touch control units 201 Long-pending sampling area, and the weighing factor of each display unit 301 in the sampling area for testing touch control unit is extrapolated to other and is touched It controls in unit, the influence power of display unit 301 in the sampling area and sampling area to obtain other touch control units 201 Weight.
It should be noted that under normal conditions, the size of the sampling area of multiple touch control units 201 is identical, still In the boundary of touch control display apparatus, due to the limitation on boundary, the sampling area area of boundary touch control unit 201 is likely less than The sampling area area of the touch control unit 201 at position among touch control display apparatus.Sampling area can be done as the case may be Corresponding adjustment, for example, touch control display apparatus boundary using with the comparable reference zone of 201 size of touch control unit as adopting The maximum area that sample region can reach is similar to this subtle adjustment within the scope of the present invention.
It is a aobvious in 201 corresponding sampling area of each touch control unit and sampling area in obtaining touch control display apparatus After the weighing factor for showing unit 301,201 corresponding sampling area of each touch control unit is stored in the second memory module 404B And in sampling area display unit 301 weighing factor.
The analysis module 403 can according to receive display module 401 transmission come be currently applied to each display unit 301 Gray scale voltage, obtain each display unit 301 currently to touch control unit detect capacitance influence coefficient, according to acquired shadow It rings coefficient and with the weighing factor that is stored, the touch control unit for obtaining each touch control unit 201 detects capacitance by the grayscale The modifying factor of voltage influence, and touch control unit detection capacitance is repaiied according to the modifying factor that current display image obtains Just.
Specifically, in the present embodiment, so that driving circuit is driven the touch control display apparatus work, carry out the work of touch detection It is as follows to make process：
With continued reference to Fig. 5, display module 401 applies gray scale voltage to each display unit 301, to drive the touch-control to show Device performs image display.In the present embodiment, using public electrode 109 as the touch detection electrode of self-capacitance detection pattern, It needs to do time-sharing multiplex to public electrode 109, shows and finish in a frame image when touch control display apparatus is performed image display, separately Before one frame image is shown, the gray scale voltage for being applied to each display unit 301 is transferred to the analysis by the display module 401 Correcting module 405 in module 403, the correcting module 405 are called according to the gray scale voltage for being applied to each display unit 301 The look-up table being stored in the first memory module 404A, to obtain each display unit 301 currently to the touch-control of touch control unit 201 Unit detects the influence coefficient of capacitance, and each display unit 301 is currently detected capacitance to the touch control unit of touch control unit 201 The influence coefficient of value forms the first matrix.
The correcting module can obtain corresponding with the touch control unit 201 from the second memory module 404B Display unit 301 in the sampling area forms the second matrix to the weighing factor of touch control unit 201.
In the correcting module 405, by each of described first matrix influence in coefficient and the second matrix with influence Coefficient is multiplied with the weighing factor of position, obtains the third matrix being made of multiple correction factors, with number in the third matrix The sum of value is used as modifying factor.
So that the drive module 402 is worked, the touch display unit is driven to carry out touch sensible, is schemed according to current display The modifying factor that picture obtains is modified the measured value of touch sensible, in the present embodiment, the measured value of the touch sensible The touch control unit detection capacitance detected on each touch control unit 201.
Specifically, in the present embodiment, when drive module 402 drives the touch display unit to carry out touch sensible, The touch control unit detection capacitance modifying factor corresponding with each touch control unit 201 of the touch sensible of each touch control unit 201 is made Capacitance is brought into for parameter and repairs equation, obtains capacitance after the amendment of each touch control unit 201, and capacitance is as actually using after amendment Touch control unit detect capacitance.
Capacitance eliminates the influence that liquid crystal deflection detects touch control unit capacitance after amendment, can more realistically reflect The variation of touch control unit detection capacitance when finger touches, to improve the precision of touch detection.
It should be noted that whether the present invention when touch control display apparatus is performed image display in a frame image to showing It finishes, another frame image carries out touch detection before showing and is not limited.In other embodiments, image is shown and touch detection It can also be carried out at the same time.
For example, in other embodiments, the touch control display apparatus includes the first display area and the second display area, the One display area and the second display area respectively include multiple display units 301, and corresponding with multiple display units 301 more A touch control unit 201.
Display module 401 applies gray scale voltage to each display unit 301, to drive the touch control display apparatus to carry out image The step of display includes：The charging of each display unit 301 finishes when performing image display in the first display area, applies grayscale electricity It is depressed into each display unit 301 of the second display area, to drive the second display area to perform image display.
The gray scale voltage of display unit 301 is stablized in the first display area at this time, can be according to being applied to the first viewing area The gray scale voltage of each display unit 301 in domain, obtain the first display area in each display unit 301 currently to the first display area In each touch control unit 201 touch control unit detection capacitance influence coefficient, and touch inspection is further carried out by drive module It surveys, and touch control unit detects capacitance after being corrected.In this way to the touch detection of the touch control unit 201 of the first display area and The image of each display unit 301 of second display area shows and can be carried out at the same time.It should be noted that when the first display area It, can be in the image display process of each display unit 301 of the second display area when the gray scale voltage of interior display unit 301 is stablized In or the first display area in 301 image of each display unit show it is aobvious with 301 image of each display unit of the second display area In time between showing, each display unit 301 is currently to each touch control unit in the first display area in the first display area of acquisition The influence coefficient of 201 touch control unit detection capacitance.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units：It is red Sub-pixel unit, green sub-pixels unit, blue subpixels unit.Since three sub-pixel units are extremely tiny and close row Row, it is believed that three sub-pixel units it is identical to 201 weighing factor of touch control unit, can respectively be obtained by searching for table red The corresponding influence coefficient of sub-pixels unit, green sub-pixels unit, blue subpixels unit is influenced with three sub-pixel units The average value of coefficient detects touch control unit as display unit 301 the influence coefficient of capacitance.Assuming that three sub-pixel units Gray scale voltage be respectively grayscale [R], grayscale [G], grayscale [B], the influence system that each display unit 301 obtains by searching for table Number is (table [R]+table [G]+table [B])/3.
In other embodiments, the influence coefficient of each sub-pixel unit in sampling area can also be obtained respectively, formed 4th matrix stores the weighing factor of each sub-pixel unit in sampling area, the 5th matrix is formed, by institute in a storage module It states each of the 4th matrix influence coefficient to be multiplied with the weighing factor of position with influence coefficient with the 5th matrix, obtain by more 6th matrix of a correction factor composition, using the sum of numerical value in the 6th matrix as modifying factor.The 6th matrix packet The correction factor contained be three times of the correction factor that third matrix includes, calculated modifying factor compared in third matrix Modifying factor is more accurate, but required calculation amount is larger.
It should be noted that due in the present embodiment, the touch control display apparatus includes being bundled on first substrate 100 Display touch detection chip (not shown), it is described display touch detection chip in the built-in driving circuit display module 401, drive module 402 and analysis module 403.It can be by showing between display module 401, drive module 402 and analysis module 403 Show touch detection chip controls, influences coefficient, weighing factor, grayscale by showing that touch detection chip is easily exchanged and transmitted The information such as voltage, but whether the present invention is integrated in a display to display module 401, drive module 402 and analysis module 403 It is not limited in touch detection chip.In other embodiments, the touch control display apparatus can also include display driver chip With touch detection chip, the display module 401 of the built-in driving circuit, the touch detection core in the display driver chip The drive module 402 and analysis module 403 of the built-in driving circuit, the display driver chip and touch detection chip in piece It is bundled on first substrate 100.In the above-described embodiments, due to display module 401 and drive module 402, analysis module 403 It is located on two chips, it is therefore desirable to which other processing chips (such as central processing unit) are to the display driver chip and touch Detection chip is controlled so that can exchange and transmit shadow between display module 401 and drive module 402, analysis module 403 Ring the information such as coefficient, weighing factor, gray scale voltage.
The present invention also provides a kind of driving method of touch control display apparatus, which includes for realizing touch-control Multiple touch control units of induction and the multiple display units shown for realizing image.Touch-control is touched by detection in finger to show When device, the touch control unit of touch control unit detects capacitance variation, realizes touch detection.
With reference to figure 6, the flow chart of the driving method of touch control display apparatus of the present invention, touch control display apparatus of the present invention are shown Driving method include：
Step S1 stores the influence coefficient that different gray scale voltages detect touch control unit capacitance.
Step S2, the display unit that store has different relative position relations from touch control unit detect capacitance to touch control unit The weighing factor of value.
Step S3 applies gray scale voltage to each display unit, to drive the touch control display apparatus to perform image display.
Step S4 obtains each display unit and is currently examined to touch control unit according to the gray scale voltage for being applied to each display unit Survey the influence coefficient of capacitance.
Step S5, according to acquired influence coefficient and with the weighing factor that is stored, obtain each touch control unit detection The modifying factor that capacitance is influenced by the gray scale voltage.
Step S6 drives the touch display unit to carry out touch sensible, the modifying factor obtained according to current display image Son is modified the measured value of touch sensible.
Specifically, can be using liquid crystal display panel as display unit with continued reference to Fig. 3, Fig. 5, the touch control display apparatus The touch control display apparatus divided.The touch control display apparatus includes first substrate 100, second substrate (not shown) and is set to Liquid crystal layer (not shown) between one substrate 100, second substrate, the display unit 301 are set to the first substrate 100 On, the touch control unit 201 is set on the first substrate 100 or second substrate.The present invention is to the touch control unit 201 Touch detection mode is not limited, and the touch control unit 201 can carry out touch detection with self-capacitance or the pattern of mutual capacitance.
As described in the embodiment of touch control display apparatus provided by the invention, the difference being applied on display unit 301 is grey Liquid crystal deflection caused by rank voltage is different, can influence the touch control unit detection capacitance of the touch control unit 201.
The driving method of the touch control display apparatus provided through the invention can correct the survey of touch control unit detection capacitance Magnitude obtains the touch control unit not interfered by different gray scale voltages and detects capacitance, and then improves the essence of touch control display apparatus Degree.
With reference to Fig. 3 to Fig. 5, an embodiment of the driving method of touch control display apparatus provided by the invention is carried out detailed It describes in detail bright.
Step S1 is executed, the influence coefficient that different gray scale voltages detect touch control unit capacitance is stored.
In the present embodiment, it is stored with including each gray scale voltage and the side for influencing coefficient corresponding with the gray scale voltage Method is：Storage includes each gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage.Such as when each institute State when can load 256 different gray scale voltages on display unit 301, the look-up table can be expressed as table [0~ 255]。
Before storage includes each gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage, need Influence coefficient corresponding with gray scale voltage is obtained by testing.In conjunction with reference to figure 3, Fig. 5, in the present embodiment, obtained by experiment Under the method for obtaining influence coefficient corresponding with gray scale voltage enters：
Apply all display units 301 of the gray scale voltage to touch control display apparatus frame by frame, wherein for same frame, apply Same gray scale voltage gives all display units 301, for different frame, applies different gray scale voltages to all display units 301.
In every frame applies the step of gray scale voltage is to all display units 301, detection is located in touch control display apparatus The detection capacitance of the touch control unit 201 of heart position detects capacitance to obtain from the corresponding touch control unit of different gray scale voltages Value.
It should be noted that in the present embodiment, touch control display apparatus shows that the mode of picture is：Make display list line by line Member 301 loads gray scale voltage.So line by line in touch control display apparatus often row display unit 301 all complete apply grayscale electricity Pressure so that touch control display apparatus can show a step of width complete picture, commonly referred to as a frame.Apply gray scale voltage frame by frame To all display units 301 of touch control display apparatus, the display for making touch control display apparatus carry out multiframe picture is referred to.For same One frame applies same gray scale voltage to all display units 301, refers in each frame picture, on all display units 301 The gray scale voltage of application is identical.For different frame, applies different gray scale voltages to all display units 301, refer to not In picture at same frame, the gray scale voltage for being applied to display unit 301 is different.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units, in institute When having display unit 301 to apply same gray scale voltage, each three sub-pixel units of the display unit 301 apply same Gray scale voltage.
After acquisition detects capacitance from the corresponding touch control unit of different gray scale voltages, with a preset gray scale voltage pair The touch control unit detection capacitance answered detects capacitance as reference capacitance value, based on the corresponding touch control unit of different gray scale voltages With the relationship of the reference capacitance value, the influence coefficient that different gray scale voltages detect touch control unit capacitance is obtained.
For example, in the picture of different frame, each display unit 301 loads multiple arrive different grayscale greatly from childhood When voltage, the corresponding touch control unit detection capacitance of multiple gray scale voltages can be measured respectively, with maximum touch control unit Capacitance is detected as reference capacitance value, based on the corresponding touch control unit detection capacitance of different gray scale voltages and benchmark electricity The relationship of capacitance obtains the influence coefficient that different gray scale voltages detect touch control unit capacitance, the influence coefficient being achieved in that Maximum value be 1, convenient for calculate.But whether the present invention is to using maximum touch control unit detection capacitance as reference capacitance value It is not limited.
It should be noted that influencing coefficient only reflects that different gray scale voltages detect touch control unit the influence of capacitance, but It is to have the display unit 301 of different location relationship to touch control unit with touch control unit 201 during obtaining influence coefficient The influence for detecting capacitance is different, and the display unit 301 in order to reduce different location is interfered caused by obtaining influence coefficient, this In embodiment, in carrying out obtaining the experiment for influencing coefficient corresponding with gray scale voltage, under each frame picture, touch-control is shown 301 ground of all display units of device applies identical gray scale voltage, under different frame picture, applies not to display unit 301 Same gray scale voltage.Such as each display unit 301 can apply from grayscale【0】To grayscale【255】Totally 256 gray scale voltages, When the gray scale voltage for needing to detect is grayscale【0】When, so that touch control display apparatus is carried out the display of first frame picture, is drawn in first frame In face, all display units 301 is made to apply grayscale【0】Gray scale voltage, and detect be now placed in touch control display apparatus center The touch control unit of the touch control unit 201 of position detects capacitance.Assume that touch control display apparatus includes the touch control unit of 9 rows 9 row When 201, the touch control unit 201 arranged positioned at the 5th row the 5th of touch control display apparatus can be detected in grayscale【0】Gray scale voltage under Touch control unit detects capacitance.Since the size of touch control unit 201 is much smaller than the size of touch control display apparatus, and all displays The gray scale voltage of unit 301 is grayscale【0】, it is believed that detect at this time touch control unit detection capacitance only with grayscale 【0】Related, to make the influence coefficient of acquisition only reflect, different gray scale voltages detect touch control unit the influence of capacitance.When need The gray scale voltage to be detected is grayscale【1】When, so that touch control display apparatus is carried out the display of the second frame picture, in the second frame picture In, so that all display units 301 is applied grayscale【1】Gray scale voltage, and detect be now placed in touch control display apparatus centre bit The touch control unit for the touch control unit 201 set detects capacitance ... method described above, until obtaining corresponding to 256 gray scale voltages Touch control unit detects capacitance.
It should be noted that the size due to touch control unit 201 is much smaller than the size of touch control display apparatus, drawn in each frame Under face, when applying identical gray scale voltage to all display units 301 of touch control display apparatus, in touch control display apparatus center Multiple touch control units detection capacitance near domain is essentially identical, the touch control unit near touch control display apparatus fringe region 201 are also not much different with the touch control unit of the touch control unit 201 in touch control display apparatus near central regions detection capacitance, because When this present invention to applying all display unit 301 of the gray scale voltage to touch control display apparatus frame by frame, if detection is located at touch-control The touch control unit detection capacitance of display device center touch control unit 201 does not limit, in other embodiments, can be with Detection detects capacitance positioned at the touch control unit of touch control display apparatus other positions touch control unit 201.
After obtaining the influence coefficient for detecting capacitance to touch control unit from different gray scale voltages, different gray scale voltages are stored The influence coefficient of capacitance is detected to touch control unit.
Step S2 is executed, store has the display unit of different relative position relations to touch control unit from touch control unit 201 Detect the weighing factor of capacitance.
The display unit 301 that store has different relative position relations from touch control unit 201 detects capacitance to touch control unit Before the weighing factor of value, need by testing the display for obtaining and there are different relative position relations from each touch control unit 201 Unit detects touch control unit the weighing factor of capacitance.
The weighing factor only reflects display unit 301 due to right with different position relationships from touch control unit 201 Touch control unit detects Different Effects caused by capacitance.With continued reference to Fig. 5, in the present embodiment, by testing acquisition and touch-control Unit 201 has the weighing factor that the display unit 301 of different relative position relations detects touch control unit capacitance：
In the present embodiment, using the one of touch control unit 201 of touch control display apparatus as experiment touch control unit.Positioned at tactile Display unit 501 centered on the display unit 301 at 201 center of control unit.
It should be noted that 81 display units 301 centered on center display unit 501 are illustrated only in Figure 5, The touch control display apparatus further includes multiple display units in addition to display unit 301 shown in Fig. 5.Touch-control list in Figure 5 First 201 positions include 25 display units 301, but the present invention includes display unit 301 in position to touch control unit 201 Quantity be not limited, in other embodiments, 201 position of touch control unit may include any number of display unit 301。
In the present embodiment, the shape of the touch control unit 201 is rectangle, but the present invention is to the shape of touch control unit 201 Shape is not limited, and in other embodiments, the shape of the touch control unit 201 can also be circle or other shapes.It needs Bright, the shape of the touch control unit 201 is rectangle or circle, refer to the shape of touch control unit 201 be similar to rectangle or Circle might not be limited to accurate rectangle or circle.For example, the shape of the touch control unit 201 can be multiple strips The figure for being similar to rectangle that is formed of public electrode.
The experiment of coefficient is influenced according to different gray scale voltages correspondences are measured, records the first gray scale voltage, first grayscale The corresponding influence coefficient of voltage is maximum, records the second gray scale voltage, corresponding the influences coefficient minimum of second gray scale voltage.
Region division is carried out to array of display cells, using the central point of touch control unit 201 as inspection center, described in selection Display unit 501 centered on the display unit 301 of inspection center's face position, centered on the center display unit 501, Delimitation includes the first reference zone of one or more display units 301, to the display unit 301 in first reference zone Apply the first gray scale voltage, the second gray scale voltage is applied to remaining display unit 301 outside the first reference zone, to touch control unit 201 carry out touch control capacitance detection, the touch control unit measured at this time are detected capacitance to obtain, and as the first detection capacitance Value.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit 301 in second reference zone is more than the The quantity of display unit 301 in one reference zone applies the first grayscale to the display unit 301 in second reference zone Voltage, applies the second gray scale voltage to remaining display unit 301 outside the second reference zone, and touch-control is carried out to touch control unit 201 Capacitance detecting, using the touch control unit measured at this time detection capacitance as the second detection capacitance.
The first detection capacitance and the second detection capacitance are brought into weight equation, using the numerical value of acquisition as in the second ginseng The weighing factor of multiple display units 301 within the domain of examination district and except the first reference zone.
Capacitance is detected to touch control unit in order to make the weighing factor of acquisition preferably react different position of display unit It influences, the shape of the first reference zone, the second reference zone that make delimitation is close with the shape of touch control unit 201.In this implementation Example in, the first reference zone, the second reference zone be centered on the center display unit 501, including multiple displays singly The referential array of member 301, the line number and columns of referential array are equal, but the present invention to the line number and columns of referential array whether It is equal not to be limited, the shape of reference zone is not also limited.
In the present embodiment, all on display units of the touch control unit detection capacitance with more apparent influence to obtain 301 weighing factor needs repeatedly delimit the first reference zone and the second reference zone, and obtains the first detection capacitance The step of with the second detection capacitance, wherein the second reference zone delimited every time is as the first reference area delimited next time Into weight equation is brought the obtain every time first detection capacitance and the second detection capacitance in domain, to delimit the first ginseng each After examination district domain and the second reference zone, obtain multiple aobvious within the second reference zone and except the first reference zone Show the weighing factor of unit.
Specifically, first using center display unit 501 as the range of the first initial reference zone, center display unit 501 area is the initial value of the first reference zone area, i.e., the line number and columns of initial referential array are 1, to center Display unit 501 applies the first gray scale voltage, applies the second grayscale to remaining display unit 301 outside center display unit 501 Voltage carries out touch control capacitance detection to touch control unit 201, and capacitance is detected as the first detection using the touch control unit measured at this time Capacitance.The area of records center display unit 501, as the first parameter.
Centered on the center display unit 501, delimitation includes the second reference zone of multiple display units 301, is made Second reference zone includes first reference zone, and the quantity of the display unit in second reference zone is more than the first ginseng The quantity of display unit in the domain of examination district.Specifically, make second reference zone be centered on center display unit 501, Include the first referential array 502 of 9 display units 301, the line number and columns of first referential array 502 are 3, first Referential array 502 includes center display unit 501 and surrounds 8 display units 301 of center display unit 501.Record the The area of one referential array 502, as the second parameter.
To in the first referential array 502 display unit 301 apply the first gray scale voltage, to the first referential array 502 outside Remaining display unit 301 apply the second gray scale voltage, to touch control unit 201 carry out touch control capacitance detection, by what is measured at this time Touch control unit detects capacitance as the second detection capacitance.
Second gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as third parameter.
First gray scale voltage is applied to all display units 301 of touch control display apparatus, with the touch control unit measured at this time Capacitance is detected as the 4th parameter.
By first parameter, the second parameter, third parameter, the 4th parameter, the first detection capacitance and the second detection electricity Capacitance brings weight equation into together, to obtain 8 displays within the second reference zone and except the first reference zone The weighing factor of unit 301.
It should be noted that in the present embodiment, for convenience of calculating, the weighing factor of different display units 301 can be made Respectively less than or equal to 1.Influence due to 501 position of center display unit to the touch control detection capacitance of touch control unit 201 Maximum, therefore, in the present embodiment, the weighing factor of default center display unit 501 is 1.But the present invention to whether will in The weighing factor of heart display unit 501 is set as 1 and is not limited, and can also set the weighing factor of center display unit 501 For other numerical value.
In the present embodiment, the weight equation is：
Y=(C2-C1)/[(Cmax-Cmin) * (area2-area1)].
Wherein, y weighing factors, C2 are the second detection capacitance, and C1 is the first detection capacitance, and Cmax is the 4th parameter, Cmin is third parameter, and area2 is the second parameter, and area1 is the first parameter.
It should be noted that according to the weight equation in the present embodiment, obtained weighing factor and the first detection capacitance Value, the second detection capacitance are related；Also and the difference of the area of the first reference zone and the second reference zone is related, therefore according to this The weighing factor that the weight equation of embodiment obtains more can accurately be reacted has different location relationship with touch control unit 201 Display unit 301 to touch control unit detect capacitance influence.But the present invention does not limit the concrete form of weight equation System, in other embodiments, weight equation can also only include that the first detection capacitance and second detect two parameters of capacitance, Or including the first detection capacitance, the second detection capacitance, third parameter, the 4th parameter totally four parameters.It is any to weight side The change of journey concrete form is within the scope of the present invention.
Since the shape of reference zone is close with the shape of touch control unit 201, in the present embodiment, it can be considered that The weighing factor of multiple display units 301 is all identical within second reference zone and except the first reference zone.
In the present embodiment, in the above described manner, it carries out repeatedly delimiting the first reference zone and the second reference zone, and obtains It the step of first detection capacitance and the second detection capacitance, delimited next time wherein the second reference zone delimited every time is used as The first reference zone, by obtain every time first detection capacitance and second detection capacitance bring weight equation into, with obtain Delimit after the first reference zone and the second reference zone every time, within the second reference zone and the first reference zone it The weighing factor of outer multiple display units.
Such as in the present embodiment, it is the first reference zone, the first referential array 502 delimiting center display unit 501 For the second reference zone and then it is primary carry out delimiting the first reference zone and the second reference zone, and obtain the first detection electricity The step of capacitance and the second detection capacitance.In this first reference zone of delimitation and the step of the second reference zone, with the One referential array 502 is the first reference zone, with the second referential array 503 for the second reference zone.Second referential array 503 centered on center display unit 501, including 16 of the first referential array 502 of the first referential array 502 and encirclement are aobvious Show unit 301.The area for recording the first referential array 502 records the area of the second referential array 503 as the first parameter, makees For the second parameter.By the first detection capacitance obtained after this first reference zone of delimitation and the second reference zone, the second inspection It surveys capacitance, the first parameter, the second parameter and third parameter, the 4th parameter and brings weight equation into together, obtain in the second ginseng The weighing factor of 16 display units 301 within the domain of examination district and except the first reference zone.
It should be noted that in the present embodiment, the first reference zone and the second reference zone are referential array, and with First reference zone is compared, and the line number and columns of the referential array of the second reference zone increase by 2.
It should be noted that the present invention is not limited the range of the first initial reference zone, in other embodiments, It can also be using the first referential array 502 or even the referential array of bigger as the first initial reference zone.The present invention couple and the One reference zone is compared, and the increased quantity of line number and columns of the referential array of the second reference zone is not also limited, at other In embodiment, compared with the first reference zone, the line number of the referential array of the second reference zone and the increase number of columns can be with For the numerical value of 2 integral multiple.
It should also be noted that, in other embodiments, when the shape of the touch control unit 201 is round, described the One reference zone, the second reference zone can be including multiple display units centered on the center display unit 501 301 display unit set.The outermost multiple display units 301 of display unit set arrive center display unit 501 Apart from equal.In this way, the shape of display unit set is also approximately round.The radius of second reference zone is more than the first reference area The radius in domain.
It should also be noted that, in the present embodiment, each display unit 301 includes three sub-pixel units, is being carried out When obtaining the experiment of weighing factor, the gray scale voltage applied on three sub-pixel units of each display unit 301 is identical.
Since the weighing factor that distance tests the display unit 301 of the inspection center of touch control unit farther out is smaller, to touching When control unit detection capacitance is modified, such minor impact weight can be ignored.Therefore, in the present embodiment, When carrying out obtaining the experiment of weighing factor, it can include the sampling area of multiple display units 301 in foundation, be adopted positioned at described Display unit in sample region is greater than or equal to the display unit being located at outside the sampling area to the weighing factor of touch control unit To the weighing factor of touch control unit.In acquisition sampling area after the weighing factor of display unit 301, it is single to ignore remaining display The influence of first 301 pairs of touch control detection capacitances, stores the display unit in the sampling area in the second memory module 404B The weighing factor of 301 pairs of experiment touch control units.
Specifically, the step of establishing sampling area can carry out with the experimental synchronous for obtaining weighing factor：
Using the area of center display unit 501 as the initial value of the first reference zone area, carry out repeatedly delimiting first The step of reference zone and the second reference zone, wherein the second reference zone delimited every time is as the first ginseng delimited next time Examination district domain；
Using the area for the first reference zone delimited every time as the first parameter；
Using the area for the second reference zone delimited every time as the second parameter；
After delimiting the first reference zone and the second reference zone every time, the first detection capacitance is obtained to the second detection First detection capacitance and the difference of the second detection capacitance divided by first are detected capacitance by capacitance, and the value of acquisition is as the Five parameters；
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter；
When the 5th parameter is less than or equal to seven parameters, using reference zone at this time as sampling area.
Specifically, with continued reference to Fig. 5, with the second referential array 503 of delimitation for the first reference zone, third referential array 504 is for the second reference zones, and the third referential array 504 is centered on center display unit 501, including described second Referential array 503 and 24 display units 301 for surrounding second referential array 503.
Using the area of the second referential array 503 as the first parameter, using the area of third referential array 504 as the second ginseng Amount.
Delimit the second referential array 503 be the first reference zone, third referential array 504 be the second reference zone it Afterwards, by the difference divided by the first detection capacitance of the first detection capacitance and the second detection capacitance, the value of acquisition is as the 5th ginseng Amount.
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter, this predetermined coefficient can 0.01 to 0.4 model In enclosing, the 5th parameter and the 7th parameter are compared in this way, can more accurately reflect delimit again every time the first reference zone and Second reference zone, and the second reference zone that the last time delimited is as when the first reference zone delimited next time, touch-control Unit detects the relationship between the variable quantity and the second reference zone area change amount of capacitance, but the present invention is to predetermined coefficient Concrete numerical value be not limited.
When the 5th parameter is less than or equal to seven parameters, using the second current reference zone as sampling area, that is, adopt Sample region is the third referential array 504 for including 49 display units.Except the range of sampling area, with referential array face Long-pending increase delimit the touch control detection capacitance variation measured after the first reference zone and the second reference zone very again every time It is small, display unit 301 except the range of sampling area can ignore to touch control detection capacitance as noise.
It should be noted that in the present embodiment, using third referential array 504 as sampling area, but sampling area Depending on included range is with actual conditions.It is generally desirable to carry out repeatedly delimiting the first reference zone and the second reference area Domain, and the step of the second reference zone that the last time delimited delimited as the first reference zone delimited next time, with determination The range of sampling area.
It, can also be with when the 5th parameter is less than or equal to seven parameters it should also be noted that, in other embodiments First reference zone is the second referential array 503 as sampling area, i.e. sampling area.
It, can be with above-mentioned for other touch control units 201 in addition to above-mentioned experiment touch control unit in touch control display apparatus Method tests each touch control unit 201, obtains 201 corresponding weighing factor of each touch control unit and sampling area.It is right It in ordinary circumstance, simply, can also record in above-mentioned experiment, test every in the sampling area and sampling area of touch control unit The sampling area identical faces of touch control unit can be established and be tested to the weighing factor of a display unit 301, other touch control units 201 Long-pending sampling area, and the weighing factor of each display unit 301 in the sampling area for testing touch control unit is extrapolated to other and is touched It controls in unit, the influence power of display unit 301 in the sampling area and sampling area to obtain other touch control units 201 Weight.
It should be noted that under normal conditions, the size of the sampling area of multiple touch control units 201 is identical, still In the boundary of touch control display apparatus, due to the limitation on boundary, the sampling area area of boundary touch control unit 201 is likely less than The sampling area area of the touch control unit 201 at position among touch control display apparatus.Sampling area can be done as the case may be Corresponding adjustment, for example, touch control display apparatus boundary using with the comparable reference zone of 201 size of touch control unit as adopting The maximum area that sample region can reach is similar to this subtle adjustment within the scope of the present invention.
It is a aobvious in 201 corresponding sampling area of each touch control unit and sampling area in obtaining touch control display apparatus After the weighing factor for showing unit 301, a display in 201 corresponding sampling area of each touch control unit and sampling area is stored The weighing factor of unit 301.
Step S3 is executed, applies gray scale voltage to each display unit 301, to drive the touch control display apparatus to carry out image Display.
Step S4 is executed, according to the gray scale voltage for being applied to each display unit 301, it is current right to obtain each display unit 301 Touch control unit detects the influence coefficient of capacitance.
Specifically, in the present embodiment, the gray scale voltage for being applied to the display unit 301 in sampling area is obtained, is obtained The single 301 influence coefficients for currently detecting capacitance to touch control unit are respectively shown in sampling area, form the first matrix.
It should be noted that in the present embodiment, being shown in a frame image when touch control display apparatus is performed image display It finishes, before another frame image is shown, according to the gray scale voltage for being applied to each display unit 301, obtains each display unit 301 and work as The preceding influence coefficient that capacitance is detected to touch control unit, forms the first matrix.
It should be noted that in the present embodiment, each display unit 301 includes three sub-pixel units：It is red Sub-pixel unit, green sub-pixels unit, blue subpixels unit.Since three sub-pixel units are extremely tiny and close row Row, it is believed that three sub-pixel units it is identical to 201 weighing factor of touch control unit, can respectively be obtained by searching for table red The corresponding influence coefficient of sub-pixels unit, green sub-pixels unit, blue subpixels unit is influenced with three sub-pixel units The average value of coefficient detects touch control unit as display unit 301 the influence coefficient of capacitance.Assuming that three sub-pixel units Gray scale voltage be respectively grayscale [R], grayscale [G], grayscale [B], the influence system that each display unit 301 obtains by searching for table Number is (table [R]+table [G]+table [B])/3.
With reference to figure 5, execute step S5, according to acquired influences coefficient and with the weighing factor that is stored, obtain respectively The modifying factor that touch control unit detection capacitance is influenced by the gray scale voltage.
Specifically, in the present embodiment, the influence by the display unit 301 in the sampling area to touch control unit 201 is weighed Reassemble into the second matrix.
Each of described first matrix is influenced into the weighing factor in coefficient and the second matrix with influence coefficient with position It is multiplied, the third matrix being made of multiple correction factors is obtained, using the sum of numerical value in the third matrix as modifying factor.Institute Liquid crystal deflection detects touch control unit the influence of capacitance caused by stating modifying factor and capable of reflecting gray scale voltage.
Step S6 drives the touch display unit to carry out touch sensible, the modifying factor obtained according to current display image Son is modified the measured value of touch sensible.
The touch display unit is driven to carry out touch sensible, the modifying factor obtained according to current display image is to touching The measured value of induction is modified.
Specifically, in the present embodiment, by each touch control unit detection capacitance modifying factor corresponding with each touch control unit 201 Son as parameter bring into capacitance reparation equation, obtain capacitance after the amendment of each touch control unit 201, using after amendment capacitance as Actual touch control unit detects capacitance.
Capacitance eliminates the influence that liquid crystal deflection detects touch control unit the measured value of capacitance after amendment, can be trueer The variation of touch control unit detection capacitance when reflection finger touches on the spot, to improve the precision of touch detection.
It should be noted that driving method of the present invention on whether using three sub-pixel units influence the average value of coefficient as The influence coefficient that display unit 301 detects touch control unit capacitance is not limited.It can also obtain respectively every in sampling area The influence coefficient of a sub-pixel unit forms the 4th matrix, stores each sub-pixel unit in sampling area in a storage module Weighing factor, form the 5th matrix, by described 4th matrix each of influence in coefficient and the 5th matrix with influence coefficient With position weighing factor be multiplied, obtain the 6th matrix being made of multiple correction factors, with numerical value in the 6th matrix it With as modifying factor.The correction factor that 6th matrix includes be three times of the correction factor that third matrix includes, institute Calculated modifying factor is more accurate compared with the modifying factor in third matrix, but required calculation amount is larger.
When the touch control display apparatus is white and black displays device, each display unit only includes a sub-pixel unit, Therefore each display unit 301 is currently to the influence coefficient i.e. each sub-pixel unit of touch control unit detection capacitance currently to touching Control the influence coefficient of unit detection capacitance.
It should also be noted that, whether the present invention is to aobvious in a frame image when touch control display apparatus is performed image display Show and finish, another frame image carries out touch detection before showing and is not limited.In other embodiments, image shows and touches inspection Survey can also be carried out at the same time.
For example, in other embodiments, the touch control display apparatus includes the first display area and the second display area, the One display area and the second display area respectively include multiple display units 301, and corresponding with multiple display units 301 more A touch control unit 201.
Apply gray scale voltage to each display unit 301, the step of to drive the touch control display apparatus to perform image display Including：The charging of display unit 301 finishes when performing image display in the first display area, applies gray scale voltage to the second display Each display unit 301 in region, to drive the second display area to perform image display.
The gray scale voltage of display unit 301 is stablized in the first display area at this time, can be according to being applied to the first viewing area The gray scale voltage of each display unit in domain obtains each display unit in the first display area and is currently touched to each in the first display area The influence coefficient of the touch control unit detection capacitance of unit 201 is controlled, and touch detection is further carried out by drive module, and is obtained Touch control unit detects capacitance after must correcting.Touch detection and second in this way to the touch control unit 201 of the first display area is aobvious Show that the image of each display unit 301 in region shows and can be carried out at the same time.It should be noted that when being shown in the first display area When the gray scale voltage of unit 301 is stablized, can in the image display process of each display unit 301 of the second display area, or 301 image of each display unit is shown in the first display area of person shows it with 301 image of each display unit of the second display area Between time in, obtain the first display area in each display unit 301 currently to each touch control unit 201 in the first display area Touch control unit detects the influence coefficient of capacitance.
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (27)

1. a kind of driving method of touch control display apparatus, which is characterized in that the touch control display apparatus includes for realizing touch-control sense The multiple touch control units answered and the multiple display units shown for realizing image, the driving method include：
Store the influence coefficient that different gray scale voltages detect touch control unit capacitance；
The influence that the display unit that store has different relative position relations from touch control unit detects touch control unit capacitance is weighed Weight；
Apply gray scale voltage to each display unit, to drive the touch control display apparatus to perform image display；
According to the gray scale voltage for being applied to each display unit, the shadow that each display unit currently detects touch control unit capacitance is obtained Ring coefficient；
According to acquired influence coefficient and with the weighing factor that is stored, obtain each touch control unit and detect capacitance by described The modifying factor that gray scale voltage influences；
The touch control display apparatus is driven to carry out touch sensible, the modifying factor obtained according to current display image is to touch sensible Measured value be modified；
The multiple display unit is arranged in array, and stores the display unit pair for having different relative position relations from touch control unit Touch control unit detect capacitance weighing factor the step of include：
Region division is carried out to array of display cells to choose in the detection using the central point of touch control unit as inspection center Display unit centered on the display unit of heart face position, centered on the center display unit, delimitation include one or First reference zone of multiple display units applies the first gray scale voltage to the display unit in first reference zone, right Remaining display unit outside first reference zone applies the second gray scale voltage, touch control capacitance detection is carried out to touch control unit, to obtain It obtains and the touch control unit measured at this time is detected into capacitance, and as the first detection capacitance；
Centered on the center display unit, delimitation includes the second reference zone of multiple display units, makes the second reference area Domain includes first reference zone, and the quantity of the display unit in second reference zone is more than in the first reference zone The quantity of display unit applies the first gray scale voltage, to the second reference zone to the display unit in second reference zone Remaining outer display unit applies the second gray scale voltage, and touch control capacitance detection, the touch-control that will be measured at this time are carried out to touch control unit Unit detects capacitance as the second detection capacitance；
The first detection capacitance and the second detection capacitance are brought into weight equation, using the numerical value of acquisition as in the second reference area The weighing factor of multiple display units within domain and except the first reference zone.
2. driving method according to claim 1, which is characterized in that store different gray scale voltages and detect electricity to touch control unit The step of influence coefficient of capacitance includes：
Apply all display units of the gray scale voltage to touch control display apparatus frame by frame, wherein for same frame, apply same grayscale Voltage gives all display units, for different frame, applies different gray scale voltages to all display units；
In every frame applies the step of gray scale voltage is to all display units, detection is positioned at touch control display apparatus center The detection capacitance of touch control unit detects capacitance to obtain from the corresponding touch control unit of different gray scale voltages；
Capacitance is detected as reference capacitance value using the corresponding touch control unit of a preset gray scale voltage, is based on different gray scale voltages pair The relationship of touch control unit the detection capacitance and the reference capacitance value answered, obtains different gray scale voltages and detects electricity to touch control unit The influence coefficient of capacitance.
3. driving method according to claim 2, which is characterized in that store different gray scale voltages and detect electricity to touch control unit The method of the influence coefficient of capacitance further includes：Obtain different gray scale voltages to touch control unit detect capacitance influence coefficient it Afterwards, it includes each gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage to generate, and stores the look-up table.
4. driving method according to claim 1, which is characterized in that storage is closed from touch control unit with different relative positions The display unit of system to touch control unit detect capacitance weighing factor the step of further include：The first gray scale voltage is recorded, it is described The corresponding influence coefficient of first gray scale voltage is maximum, records the second gray scale voltage, and corresponding influences of second gray scale voltage is Number is minimum.
5. driving method according to claim 4, which is characterized in that by the first detection capacitance and the second detection capacitance Weight equation is brought into, using the numerical value of acquisition as multiple aobvious within the second reference zone and except the first reference zone The step of weighing factor for showing unit further includes：
Using the area of the first reference zone as the first parameter；
Using the area of the second reference zone as the second parameter；
Second gray scale voltage is applied to all display units of touch control display apparatus, capacitance is detected with the touch control unit measured at this time Value is used as third parameter；
First gray scale voltage is applied to all display units of touch control display apparatus, capacitance is detected with the touch control unit measured at this time Value is used as the 4th parameter；
By first parameter, the second parameter, third parameter, the 4th parameter, the first detection capacitance and the second detection capacitance Bring the weight equation into together.
6. driving method according to claim 5, which is characterized in that the weight equation is：
Y=(C2-C1)/[(Cmax-Cmin) * (area2-area1)],
Wherein, y is weighing factor, and C2 is the second detection capacitance, and C1 is the first detection capacitance, and Cmax is the 4th parameter, Cmin is third parameter, and area2 is the second parameter, and area1 is the first parameter.
7. driving method according to claim 1, which is characterized in that storage is closed from touch control unit with different relative positions The display unit of system to touch control unit detect capacitance weighing factor the step of further include：
By repeatedly delimiting the first reference zone and the second reference zone, the first detection capacitance and the second detection capacitance are obtained The step of, wherein the second reference zone delimited every time is as the first reference zone delimited next time, will obtain every time One detection capacitance and the second detection capacitance bring weight equation into, and the first reference zone and the second reference delimited every time to obtain After region, the weighing factor of multiple display units within the second reference zone and except the first reference zone.
8. driving method according to claim 1, which is characterized in that delimit the first reference zone, second reference zone Step includes：First reference zone, the shape of the second reference zone and the shape of the touch control unit is set to match.
9. driving method according to claim 8, which is characterized in that the shape of the touch control unit is rectangle, described the One reference zone, the second reference zone are to include the reference battle array of multiple display units centered on the center display unit Row, the line number and columns of the referential array are equal.
10. driving method according to claim 8, which is characterized in that the shape of the touch control unit is circle, described the One reference zone, the second reference zone are to include the display list of multiple display units centered on the center display unit Member set, the distance of display unit set outermost multiple display units to the center display unit are equal.
11. driving method according to claim 1, which is characterized in that storage has different relative positions from touch control unit The display unit of relationship to touch control unit detect capacitance weighing factor the step of further include：Based on the weighing factor to aobvious Show that unit carries out region division, establishes the corresponding sampling area of each touch control unit, the display unit being located in the sampling area Influence power of the display unit being located at outside the sampling area to touch control unit is greater than or equal to the weighing factor of touch control unit Weight；
Store weighing factor of the display unit in the corresponding sampling area of each touch control unit and sampling area to touch control unit.
12. driving method according to claim 11, which is characterized in that carried out to display unit based on the weighing factor Region division, the step of establishing each touch control unit corresponding sampling area include:
The step of repeatedly delimiting the first reference zone and the second reference zone, wherein under the second reference zone delimited every time is used as The first reference zone once delimited；
Using the first reference zone area for delimiting every time as the first parameter；
Using the second reference zone area for delimiting every time as the second parameter；
After delimiting the first reference zone and the second reference zone every time, the first detection capacitance and the second detection capacitance are obtained Value, by the difference divided by the first detection capacitance of the first detection capacitance and the second detection capacitance, the value of acquisition is as the 5th ginseng Amount；
Using the ratio of the variable quantity of the first parameter to the second parameter and the second parameter as the 6th parameter；
6th parameter is multiplied with a predetermined coefficient, obtains the 7th parameter；
When the 5th parameter is less than or equal to seven parameters, using the second current reference zone as sampling area.
13. driving method according to claim 1, which is characterized in that the display unit includes：Red sub-pixel list Member, green sub-pixels unit, blue subpixels unit；
The basis is applied to the gray scale voltage of each display unit, obtains each display unit and currently detects capacitance to touch control unit Influence coefficient the step of include：
Red sub-pixel unit, green sub-pixels unit, the corresponding shadow of each gray scale voltage on blue subpixels unit are obtained respectively Ring coefficient；
It obtains red sub-pixel unit, green sub-pixels unit, blue subpixels unit and corresponds to the average value for influencing coefficient, with institute State influence coefficient of the average value as display unit to touch control unit detection capacitance.
14. driving method according to claim 1, which is characterized in that the basis is applied to the grayscale of each display unit Voltage, obtaining the step of each display unit currently detects the influence coefficient of capacitance to touch control unit includes：It shows and fills in touch-control It sets and shows and finish in a frame image when performing image display, before another frame image is shown, according to being applied to each display unit Gray scale voltage obtains the influence coefficient that each display unit currently detects touch control unit capacitance.
15. driving method according to claim 1, which is characterized in that the touch control display apparatus includes the first viewing area Domain and the second display area；
Apply gray scale voltage to each display unit, to include the step of driving the touch control display apparatus to perform image display： Display unit charging finishes when performing image display in first display area, and it is each aobvious to the second display area to apply gray scale voltage Show unit, to drive the second display area to perform image display；
The basis is applied to the gray scale voltage of each display unit, obtains each display unit and currently detects capacitance to touch control unit Influence coefficient the step of include：According to the gray scale voltage for being applied to each display unit in the first display area, it is aobvious to obtain first Show that each display unit is currently to the influence coefficient of touch control unit detection capacitance in region.
16. a kind of driving circuit of touch control display apparatus, which is characterized in that the touch control display apparatus includes for realizing touch-control sense The multiple touch control units answered and the multiple display units shown for realizing image, the driving circuit include：
Drive module, for driving the touch control display apparatus to carry out touch sensible；
Display module, for applying gray scale voltage to each display unit, to drive the touch control display apparatus to perform image display；
Analysis module detects touch control unit the influence coefficient of capacitance for storing different gray scale voltages, and is stored with and touches Control the weighing factor that there is unit the display unit of different relative position relations capacitance is detected to touch control unit；
The analysis module is additionally operable to, according to the gray scale voltage for being applied to each display unit, obtain each display unit currently to touch-control Unit detects the influence coefficient of capacitance, according to acquired influences coefficient and with the weighing factor that is stored, obtain each tactile The modifying factor that control unit detection capacitance is influenced by the gray scale voltage, and the modifying factor obtained according to current display image The measured value of the touch sensible of drive module acquisition is modified；
The analysis module includes：
First memory module detects touch control unit for storing different gray scale voltages the influence coefficient of capacitance；
Second memory module examines touch control unit for storing the display unit for having different relative position relations from touch control unit Survey the weighing factor of capacitance；
Correcting module is connected with the drive module, display module, the first memory module and the second memory module, is used for basis Display module is applied to the gray scale voltage of each display unit, and obtaining gray scale voltage from first memory module examines touch control unit The influence coefficient of capacitance is surveyed, and the shadow that each display unit detects touch control unit capacitance is obtained from second memory module Weight is rung, according to acquired influence coefficient and weighing factor, obtains each touch control unit detection capacitance by grayscale electricity Press the modifying factor influenced, and the modifying factor obtained according to current display image detection capacitance that drive module is obtained into Row is corrected；
The correcting module is used to obtain the gray scale voltage for the display unit that drive module is applied in sampling area, passes through first Memory module obtains the influence coefficient that each display unit in sampling area currently detects touch control unit capacitance, each display unit The influence coefficient that capacitance is currently detected to touch control unit forms the first matrix；
The correcting module is additionally operable to obtain display unit in the sampling area to touch-control by second memory module The weighing factor of unit, the display unit in the sampling area form the second matrix to the weighing factor of touch control unit；
Each display unit in the sampling area to the weighing factor of touch control unit also under different gray scale voltages by each display The detection capacitance for the touch control unit that unit influences is related；
The correcting module each of described first matrix can be influenced in coefficient and the second matrix with the same position of influence coefficient The weighing factor set is multiplied, and obtains the third matrix being made of multiple correction factors, is made with the sum of numerical value in the third matrix For modifying factor.
17. driving circuit according to claim 16, which is characterized in that first memory module includes every for storing A gray scale voltage and the look-up table for influencing coefficient corresponding with the gray scale voltage.
18. driving circuit according to claim 16, which is characterized in that each touch control unit with by multiple display unit groups At sampling area it is corresponding, the display unit in the sampling area is greater than or equal to the weighing factor of touch control unit The weighing factor of display unit outside the sampling area to touch control unit；
The weighing factor that second memory module is used to store the display unit in the sampling area to touch control unit.
19. driving circuit according to claim 16, which is characterized in that the analysis module is used to drive in drive module When the touch control display apparatus carries out touch sensible, the measured value of the touch sensible for each touch control unit that drive module is obtained with And modifying factor brings capacitance into and repairs equation, obtains capacitance after the amendment of each touch control unit, capacitance is as in fact using after amendment Border touch detection value.
20. driving circuit according to claim 16, which is characterized in that the analysis module is used in touch control display apparatus It shows and finishes in a frame image when performing image display, before another frame image is shown, according to the ash for being applied to each display unit Rank voltage obtains the influence coefficient that each display unit currently detects touch control unit capacitance.
21. driving circuit according to claim 16, which is characterized in that the touch control display apparatus includes the first viewing area Domain and the second display area；
The display module is used for the display unit charging in the first display area and finishes when performing image display, and applies grayscale electricity It is depressed into each display unit of the second display area, to drive the second display area to perform image display；
The analysis module is used to, according to the gray scale voltage for being applied to each display unit in the first display area, obtain the first display Each display unit currently detects touch control unit the influence coefficient of capacitance in region.
22. driving circuit according to claim 16, which is characterized in that the drive module, display module and described point Analysis module is integrated in a touch display chip.
23. driving circuit according to claim 16, which is characterized in that the drive module is integrated with the analysis module Chip is touched one, the display module is set to a display chip.
24. a kind of touch control display apparatus, which is characterized in that including：
Multiple touch control units for realizing touch-control sensing and multiple display units for being shown for realizing image；
The driving circuit of touch control display apparatus as described in claim 16~23 any one, and the touch control display apparatus Driving circuit be connected with the multiple touch control unit and multiple display units, the driving circuit of the touch control display apparatus is used Capacitance is detected in the touch control unit for detecting the multiple touch control unit.
25. touch control display apparatus according to claim 24, which is characterized in that the touch control display apparatus further includes first Substrate, second substrate and the liquid crystal layer being set between first substrate, second substrate, the display unit include being set to institute The pixel electrode on first substrate is stated, the touch control unit includes the touch detection electrode being set on the first substrate.
26. touch control display apparatus according to claim 25, which is characterized in that be provided with common electrical on the first substrate Pole, the public electrode are used as the touch detection electrode of the touch control unit.
27. touch control display apparatus according to claim 25, which is characterized in that the touch control unit detection capacitance is institute State the measured value of the capacitance between the touch detection electrode of touch control unit and ground terminal.
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