CN104423733A - Touch display device and capacitance value sensing method - Google Patents
Touch display device and capacitance value sensing method Download PDFInfo
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- CN104423733A CN104423733A CN201310367188.9A CN201310367188A CN104423733A CN 104423733 A CN104423733 A CN 104423733A CN 201310367188 A CN201310367188 A CN 201310367188A CN 104423733 A CN104423733 A CN 104423733A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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Abstract
The invention provides a touch display device and a capacitance value sensing method. The touch display device comprises a display panel, a source electrode driver, a touch panel, a touch sensing circuit and an interference compensation unit, wherein the display panel is provided with a plurality of liquid crystal pixels; the source electrode driver writes a plurality of pixel voltages to the liquid crystal pixels according to multiple pieces of display data; the touch panel and the display panel are overlapped, and the touch panel is provided with a plurality of touch areas; the touch sensing circuit detects the capacitance variable quantities of the touch areas; the interference compensation unit is coupled with the touch sensing circuit to receive the capacitance variable quantities of the touch areas, and provides a plurality of sensing signals after the capacitance variable quantity corresponding to each touch area is corrected according to a capacitance interference value independently corresponding to the liquid crystal pixels.
Description
Technical field
The present invention relates to a kind of display device, particularly relate to a kind of touch control display apparatus and capacitance method for sensing thereof.
Background technology
Along with fast development and the application of infotech, wireless mobile communications and information household appliances, lightly change and object user-friendly for operation to reach carrying convenience, volume, many information products are by input medias such as traditional keyboard or mouses, change into and use contact panel (Touch Panel) as input media, the touch control display panel wherein simultaneously with touch-control and Presentation Function becomes one of most popular product now especially.
At present, contact panel roughly can divide into the contact panels such as resistance-type, condenser type, optical profile type, sound wave type and electromagnetic type, is wherein modal product with capacitance type touch-control panel.When the pixel of display panel is liquid crystal pixel, because the liquid crystal capacitance of liquid crystal pixel may change along with received pixel voltage, so that affect capacitance that contact panel senses and produce interference (crosstalk), and then the touch point affecting contact panel judges.
Summary of the invention
The invention provides a kind of touch control display apparatus and capacitance method for sensing thereof, the impact of liquid crystal capacitance change on the capacitance of contact panel of liquid crystal pixel can be eliminated.
Touch control display apparatus of the present invention, comprises a display panel, one source pole driver, a contact panel, a touch control sensing circuit and an interference compensation unit.Display panel has multiple liquid crystal pixel.Source electrode driver couples display panel and receives multiple display data, with according to the multiple pixel voltage of these display data writings to these liquid crystal pixels.Contact panel and display panel overlap and have multiple touch area, these liquid crystal pixels of these touch areas difference corresponding part.Touch control sensing circuit couples contact panel, to detect the capacitance change of these touch areas.Interference compensation unit couples touch control sensing circuit to receive the capacitance change of these touch areas, and provides multiple sensing signal according to after capacitance change corresponding to each touch area of capacitance interference value correction that these liquid crystal pixels are corresponding respectively.
In one embodiment of this invention, interference compensation unit is according to these capacitance interference values of these liquid crystal pixels corresponding to each touch area and adjacent to capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels of each touch area.
In one embodiment of this invention, interference compensation unit carries out summation to obtain a reference capacitance interference value by these capacitance interference values of these corresponding for each touch area liquid crystal pixels and after being multiplied by a corresponding weighted value respectively adjacent to these capacitance interference values of these liquid crystal pixels of each touch area, and the capacitance change that foundation each touch area of reference capacitance interference value correction is corresponding.
In one embodiment of this invention, interference compensation unit is according to capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels corresponding to each touch area.
In one embodiment of this invention, interference compensation unit carries out summation to obtain a reference capacitance interference value after these capacitance interference values of these corresponding for each touch area liquid crystal pixels being multiplied by respectively a corresponding weighted value, and the capacitance change that foundation each touch area of reference capacitance interference value correction is corresponding.
Interference compensation unit revises capacitance change corresponding to each touch area according to the part of these capacitance interference values of these liquid crystal pixels corresponding to each touch area.
Interference compensation unit carries out summation to obtain a reference capacitance interference value after these capacitance interference values of the part of these corresponding for each touch area liquid crystal pixels being multiplied by respectively a corresponding weighted value, and the capacitance change that foundation each touch area of reference capacitance interference value correction is corresponding.
In one embodiment of this invention, touch control display apparatus also comprises an interference estimation unit, receives these display data, to calculate capacitance interference value corresponding to each liquid crystal pixel according to a grey decision-making of display data corresponding to each liquid crystal pixel.
In one embodiment of this invention, interference estimation unit also receives at least one of a vertical synchronizing signal and a horizontal-drive signal, to judge according to the vertical synchronizing signal received and horizontal-drive signal the display data that each liquid crystal pixel is corresponding.
In one embodiment of this invention, touch control display apparatus also comprises a storage unit, couples interference estimation unit and interference compensation unit, in order to these capacitance interference values stored and provide these liquid crystal pixels corresponding.
The capacitance method for sensing of touch control display apparatus of the present invention, comprising: the capacitance change being detected multiple touch areas of a contact panel by a touch control sensing circuit; And, capacitance change corresponding to corresponding each touch area of capacitance interference value correction is distinguished by an interference compensation unit and according to multiple liquid crystal pixels of a display panel.
In one embodiment of this invention, the step by interference compensation unit and according to capacitance change corresponding to each touch area of capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively comprises: by interference compensation unit and according to these capacitance interference values of these liquid crystal pixels corresponding to each touch area and adjacent to capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels of each touch area.
In one embodiment of this invention, by interference compensation unit and according to these capacitance interference values of these liquid crystal pixels corresponding to each touch area and comprise adjacent to the step of capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels of each touch area: carry out summation to obtain a reference capacitance interference value by interference compensation unit by these capacitance interference values of these corresponding for each touch area liquid crystal pixels and after being multiplied by a corresponding weighted value respectively adjacent to these capacitance interference values of these liquid crystal pixels of each touch area, and according to capacitance change corresponding to each touch area of reference capacitance interference value correction.
In one embodiment of this invention, the step by interference compensation unit and according to capacitance change corresponding to each touch area of capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively comprises: by interference compensation unit and according to capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels corresponding to each touch area.
In one embodiment of this invention, step by interference compensation unit and according to capacitance change corresponding to these each touch areas of capacitance interference value correction of these liquid crystal pixels corresponding to each touch area comprises: carry out summation to obtain a reference capacitance interference value after these capacitance interference values of these corresponding for each touch area liquid crystal pixels being multiplied by a corresponding weighted value respectively by interference compensation unit, and according to capacitance change corresponding to each touch area of reference capacitance interference value correction.
In one embodiment of this invention, the step by interference compensation unit and according to capacitance change corresponding to each touch area of capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively comprises: the part by interference compensation unit and according to these capacitance interference values of these liquid crystal pixels corresponding to each touch area revises capacitance change corresponding to each touch area.
In one embodiment of this invention, the step revising capacitance change corresponding to each touch area by interference compensation unit and according to the part of these capacitance interference values of these liquid crystal pixels corresponding to each touch area comprises: carry out summation to obtain a reference capacitance interference value after these capacitance interference values of the part of these corresponding for each touch area liquid crystal pixels being multiplied by a corresponding weighted value respectively by interference compensation unit, and according to capacitance change corresponding to each touch area of reference capacitance interference value correction.
In one embodiment of this invention, the capacitance method for sensing of touch control display apparatus, also comprises: by an interference estimation unit, and calculate capacitance interference value corresponding to each liquid crystal pixel according to a grey decision-making of display data corresponding to each liquid crystal pixel.
In one embodiment of this invention, the weighted value corresponding to each liquid crystal pixel being positioned at each touch area central authorities is greater than the weighted value corresponding to each liquid crystal pixel be positioned at outside each touch area, and the weighted value corresponding to each liquid crystal pixel being positioned at each touch area central authorities is greater than the weighted value corresponding to each liquid crystal pixel being positioned at each edge, touch area.
Based on above-mentioned, the touch control display apparatus of the embodiment of the present invention and capacitance method for sensing thereof, it revises according to the capacitance interference value that each pixel in display panel is corresponding the capacitance change that in contact panel, each touch area is corresponding.Thus, the impact of liquid crystal capacitance change on the capacitance of contact panel of liquid crystal pixel can be eliminated.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the system schematic of the touch control display apparatus according to one embodiment of the invention;
Fig. 2 is the touch area according to one embodiment of the invention and the corresponding schematic diagram of pixel;
Fig. 3 is the touch area according to another embodiment of the present invention and the corresponding schematic diagram of pixel;
Fig. 4 is the touch area according to yet another embodiment of the invention and the corresponding schematic diagram of pixel;
Fig. 5 is according to the touch area of one embodiment of the invention and the corresponding schematic diagram of the weighted value of pixel;
Fig. 6 is the process flow diagram of the capacitance method for sensing of touch control display apparatus according to one embodiment of the invention.
Description of reference numerals:
100: touch control display apparatus;
110: display panel;
120: source electrode driver;
130: contact panel;
140: touch control sensing circuit;
150: interference estimation unit;
160: storage unit;
170: interference compensation unit;
AR: touch area;
AR1, AR2, ARC: region;
CP: capacitance variations;
CPV: capacitance change;
Ddisp: display data;
HSYN: horizontal-drive signal;
P: liquid crystal pixel;
SL: source electrode line;
Ssen: sensing signal;
VI: capacitance interference value;
VP: pixel voltage;
VSYN: vertical synchronizing signal;
S610, S620, S630: step.
Embodiment
Fig. 1 is the system schematic of the touch control display apparatus according to one embodiment of the invention.Fig. 2 is the touch area according to one embodiment of the invention and the corresponding schematic diagram of pixel.Please refer to Fig. 1 and Fig. 2, in the present embodiment, touch control display apparatus 100 comprises display panel 110, source electrode driver 120, contact panel 130, touch control sensing circuit 140, interference estimation unit 150, storage unit 160 and interference compensation unit 170.Wherein, display panel 110 and contact panel 130 are for together with being attached to, but in other embodiments, display panel 110 and contact panel 130 can combine, and the embodiment of the present invention is not as limit.
Display panel 110 has multiple liquid crystal pixel P and many source electrode line SL, and wherein source electrode line SL is in order to transmit corresponding pixel voltage VP.Source electrode driver 120 couples display panel 110, and receive multiple display data Ddisp, vertical synchronizing signal VSYN and horizontal-drive signal HSYN, to receive display data Ddisp according to vertical synchronizing signal VSYN and horizontal-drive signal HSYN, there is provided multiple pixel voltage VP according to the display data Ddisp received again, wherein pixel voltage VP can write in liquid crystal pixel P accordingly.
Contact panel 130 and display panel 110 overlap, and have multiple touch area (as AR).Because contact panel 130 and display panel 110 overlap, therefore the control touch area (as AR) of contact panel 130 can be overlapping with the liquid crystal pixel P of part, and also namely each touch area (as AR) can be overlapped in the liquid crystal pixel P of (namely corresponding) part.Wherein, contact panel 130 is such as projected capacitive touch panel, but the embodiment of the present invention is not as limit.Touch control sensing circuit 140 couples contact panel 130, to detect the capacitance variations CP of each touch area (as AR), and exports multiple capacitance change CPV.
Interference estimation unit 150 receives display data Ddisp, vertical synchronizing signal VSYN and horizontal-drive signal HSYN, to receive display data Ddisp according to vertical synchronizing signal VSYN and horizontal-drive signal HSYN, and calculate (or judgement) display data Ddisp that each liquid crystal pixel P is corresponding according to vertical synchronizing signal VSYN and/or horizontal-drive signal HSYN.Then, the equivalent capacitance value (the capacitance interference value VI that namely each liquid crystal pixel P is corresponding) of each liquid crystal pixel P is calculated according to the grey decision-making of display according to the show represented by data Ddisp (as grey decision-making 0-255) that each liquid crystal pixel P is corresponding.Wherein, in different liquid crystal structures, the equivalent capacitance value of each liquid crystal pixel P may be different, and after the pixel voltage VP that write is different, the equivalent capacitance value of each liquid crystal pixel P can be subject to the impact of liquid crystal rotation and change.Wherein, above-mentioned change may be increase along with the increase of grey decision-making, also may be reduce along with the increase of grey decision-making, and this determines according to side circuit, and the embodiment of the present invention is not as limit.
Storage unit 160 couples interference estimation unit 150, in order to store and to provide capacitance interference value VI corresponding to each liquid crystal pixel P.Wherein, storage unit 160 can be made up of impact damper (buffer) or storer (memory), to store capacitance interference value VI corresponding to each liquid crystal pixel P.In other words, each impact damper can store corresponding capacitance interference value VI, or the storage address of the corresponding correspondence of each liquid crystal pixel P, it is in order to store corresponding capacitance interference value VI.
Interference compensation unit 170 couples touch control sensing circuit 140 to receive the capacitance change of those touch areas, and couples storage unit 160 to receive capacitance interference value VI corresponding to each liquid crystal pixel P.Then, interference compensation unit 170 calculates according to the capacitance interference value VI that each liquid crystal pixel P is corresponding the capacitance (i.e. reference capacitance interference value) that each touch area (as AR) changes by the impact of liquid crystal pixel P, and provides multiple sensing signal Ssen according to after capacitance change CPV corresponding to each touch area of the reference capacitance interference value correction (as AR) of each touch area (as AR).In various embodiments, the correcting mode of capacitance change CPV may be different, in other words, capacitance change CPV can be added with reference capacitance interference value, capacitance change CPV can subtract each other with reference capacitance interference value, capacitance change CPV can be multiplied with reference capacitance interference value, or capacitance change CPV can be divided by with reference capacitance interference value, but the embodiment of the present invention is not as limit.
Furthermore, as shown in Figure 2, overlapping (also i.e. touch area AR corresponding part liquid crystal pixel P) of touch area AR and partial liquid crystal pixel P.In one embodiment of this invention, interference compensation unit 150 can according to the capacitance interference value VI computing reference capacitance interference value of the liquid crystal pixel P of touch area AR correspondence (namely overlapping), also namely interference compensation unit 150 to be positioned at the capacitance interference value VI computing reference capacitance interference value of the liquid crystal pixel P of touch area AR, with according to capacitance change CPV corresponding to reference capacitance interference value correction touch area AR.
Further, due to liquid crystal pixel P is arranged in touch area AR diverse location may be different on the impact of the capacitance change CPV of touch area AR, therefore, the position that can be arranged in touch area AR for liquid crystal pixel P sets a weighted value accordingly.Then, interference compensation unit 150 carries out summation to obtain reference capacitance interference value after the capacitance interference value VI of liquid crystal pixel P corresponding for touch area AR can being multiplied by respectively corresponding weighted value, and the capacitance change CPV that foundation reference capacitance interference value correction touch area AR is corresponding, its equation calculated can refer to following:
Grey decision-making wherein represented by the display data Ddisp of D (m, n) corresponding to the liquid crystal pixel P of coordinate (m, n), and w
m,nfor be positioned at coordinate (m, n) liquid crystal pixel P corresponding to weighted value, α
i,jfor the touch area T of coordinate (i, j)
i,jthe interference weighted value (i.e. the relation of grey decision-making and capacitance interference value VI) that (as AR) is corresponding, the reference capacitance interference value that the touch area (as AR) that crosstalk (i, j) is coordinate (i, j) is corresponding.Thus, the distance of the central point (can be considered touch-control node) of each liquid crystal pixel P and touch area (as AR) can be compensated, or compensate each liquid crystal pixel P effect different from touch area (as AR) interference effect.Wherein, the account form of above-mentioned reference capacitance interference value is the mode using weighted sum (weighed sum), but the embodiment of the present invention is not as limit, such as, can omit parameter w
m,nand carry out general summation.
Fig. 3 is the touch area according to another embodiment of the present invention and the corresponding schematic diagram of pixel.Please refer to Fig. 1 to Fig. 3, wherein same or similar element uses same or similar label.In the present embodiment, interference compensation unit 150 can according to the capacitance interference value VI computing reference capacitance interference value of the capacitance interference value VI of liquid crystal pixel P corresponding to touch area AR and the liquid crystal pixel P adjacent to touch area AR, also namely interference compensation unit 150 to be positioned at the capacitance interference value VI computing reference capacitance interference value of the liquid crystal pixel P of region AR1, with according to capacitance change CPV corresponding to reference capacitance interference value correction touch area AR.
Similarly, due to liquid crystal pixel P is arranged in touch area AR diverse location may be different on the impact of the capacitance change CPV of touch area AR, the position that therefore can be arranged in touch area AR for liquid crystal pixel P sets weighted value accordingly.Then, interference compensation unit 150 carries out summation to obtain reference capacitance interference value by the capacitance interference value VI of liquid crystal pixel P corresponding for touch area AR and after being multiplied by corresponding weighted value respectively adjacent to the capacitance interference value VI of the liquid crystal pixel P of touch area AR, and the capacitance change CPV that foundation reference capacitance interference value correction touch area AR is corresponding.
Fig. 4 is the touch area according to yet another embodiment of the invention and the corresponding schematic diagram of pixel.Please refer to Fig. 1, Fig. 2 and Fig. 4, wherein same or similar element uses same or similar label.In the present embodiment, interference compensation unit 150 is according to the part computing reference capacitance interference value of the capacitance interference value VI of liquid crystal pixel P corresponding to touch area AR, such as interference compensation unit 150 to be positioned at the capacitance interference value VI computing reference capacitance interference value of the liquid crystal pixel P of region AR2, with according to capacitance change CPV corresponding to reference capacitance interference value correction touch area AR.
Similarly, due to liquid crystal pixel P is arranged in touch area AR diverse location may be different on the impact of the capacitance change CPV of touch area AR, the position that therefore can be arranged in touch area AR for liquid crystal pixel P sets weighted value accordingly.Then, interference compensation unit 150 carries out summation to obtain reference capacitance interference value after the capacitance interference value VI of the liquid crystal pixel P in the AR2 of region being multiplied by respectively corresponding weighted value, and the capacitance change CPV that foundation reference capacitance interference value correction touch area AR is corresponding.
Fig. 5 is according to the touch area of one embodiment of the invention and the corresponding schematic diagram of the weighted value of pixel.Please refer to Fig. 2 and Fig. 5, wherein same or similar element uses same or similar label.In the present embodiment, suppose that the weighted value corresponding to liquid crystal pixel P is inversely proportional to the distance of the central point of liquid crystal pixel P and touch area AR.In other words, the weighted value corresponding to liquid crystal pixel P in the AR of touch area is greater than the weighted value corresponding to liquid crystal pixel P be positioned at outside the AR of touch area, and the weighted value corresponding to liquid crystal pixel P being positioned at touch area AR central authorities (as region ARC) be greater than be positioned at AR edge, touch area (as at touch area AR but outer at region ARC) liquid crystal pixel P corresponding to weighted value.Above-mentioned for citing is to illustrate, but the embodiment of the present invention is not as limit.
In addition, above-described embodiment is hypothesis picture display frequency and touch-control sweep frequency is 1:1.When picture display frequency and touch-control sweep frequency are 2:1, also it is the time of contact panel 130 run-down, display panel 110 shows two pictures, then interference compensation unit 150 can obtain two reference capacitance interference values corresponding to each touch area (as AR), and interference compensation unit 150 can according to capacitance change CPV corresponding to two reference capacitance interference values (such as average, or compute weighted) correction touch area AR of institute corresponding to each touch area (as AR).All the other ratios can the rest may be inferred, then repeats no more at this.
Further, the liquid crystal pixel P selected by above-described embodiment computing reference capacitance interference value is for citing is to illustrate, those skilled in the art can according to the liquid crystal pixel P selected by circuit design sets itself.Further, in above-described embodiment, the setting of weighted value can according to those skilled in the art's sets itself, and the embodiment of the present invention is not as limit.
Fig. 6 is the process flow diagram of the capacitance method for sensing of touch control display apparatus according to one embodiment of the invention.Please refer to Fig. 6, in the present embodiment, the capacitance method for sensing of touch control display apparatus comprises the following steps.The capacitance change (step S610) of multiple touch areas of contact panel is detected by touch control sensing circuit.Grey decision-making by interference estimation unit and according to display data corresponding to each liquid crystal pixel calculates capacitance interference value (step S620) corresponding to each liquid crystal pixel.Capacitance change (step S63) corresponding to the corresponding each touch area of capacitance interference value correction is distinguished by interference compensation unit and according to all liquid crystal pixels of display panel.Wherein, the order of above-mentioned steps S610, S620, S630 is that the embodiment of the present invention is not as limit in order to illustrate.Further, the details of above-mentioned steps S610, S620, S630 can refer to described in Fig. 1 to Fig. 5 embodiment, then repeats no more at this.
In sum, the touch control display apparatus of the embodiment of the present invention and capacitance method for sensing thereof, it revises according to the capacitance interference value that each pixel in display panel is corresponding the capacitance change that in contact panel, each touch area is corresponding.Thus, the impact of liquid crystal capacitance change on the capacitance of contact panel of liquid crystal pixel can be eliminated.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (24)
1. a touch control display apparatus, is characterized in that, comprising:
One display panel, has multiple liquid crystal pixel;
One source pole driver, couples this display panel and receives multiple display data, with according to the multiple pixel voltage of those display data writings to those liquid crystal pixels;
One contact panel, overlaps with this display panel and has multiple touch area, those liquid crystal pixels of those touch areas difference corresponding part;
One touch control sensing circuit, couples this contact panel, to detect the capacitance change of those touch areas;
One interference compensation unit, couples this touch control sensing circuit to receive the capacitance change of those touch areas, and provides multiple sensing signal according to after capacitance change corresponding to the capacitance interference value correction that those liquid crystal pixels are corresponding respectively those touch areas each.
2. touch control display apparatus according to claim 1, it is characterized in that, those capacitance interference value corrections capacitance change that respectively those touch areas are corresponding of those capacitance interference values of those liquid crystal pixels that these interference compensation unit foundation those touch areas each are corresponding and those liquid crystal pixels adjacent to those touch areas each.
3. touch control display apparatus according to claim 2, it is characterized in that, this interference compensation unit carries out summation to obtain a reference capacitance interference value by those capacitance interference values of those corresponding for those touch areas each liquid crystal pixels and after being multiplied by a corresponding weighted value respectively adjacent to those capacitance interference values of those liquid crystal pixels of those touch areas each, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
4. touch control display apparatus according to claim 3, is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each be positioned at outside those touch areas each.
5. touch control display apparatus according to claim 1, is characterized in that, those capacitance interference value corrections capacitance change that respectively those touch areas are corresponding of those liquid crystal pixels that these interference compensation unit foundation those touch areas each are corresponding.
6. touch control display apparatus according to claim 5, it is characterized in that, this interference compensation unit carries out summation to obtain a reference capacitance interference value after those capacitance interference values of those corresponding for those touch areas each liquid crystal pixels are multiplied by a corresponding weighted value respectively, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
7. touch control display apparatus according to claim 6, is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each being positioned at those edges, touch area each.
8. touch control display apparatus according to claim 1, is characterized in that, the part correction capacitance change that respectively those touch areas are corresponding of those capacitance interference values of those liquid crystal pixels that these interference compensation unit foundation those touch areas each are corresponding.
9. touch control display apparatus according to claim 8, it is characterized in that, this interference compensation unit carries out summation to obtain a reference capacitance interference value after those capacitance interference values of part of those corresponding for those touch areas each liquid crystal pixels are multiplied by a corresponding weighted value respectively, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
10. touch control display apparatus according to claim 9, it is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each being positioned at those edges, touch area each.
11. touch control display apparatus according to claim 1, also comprise an interference estimation unit, receive those display data, calculate this capacitance interference value corresponding to those liquid crystal pixels each with a grey decision-making of the foundation display data that respectively those liquid crystal pixels are corresponding.
12. touch control display apparatus according to claim 11, it is characterized in that, this interference estimation unit also receives at least one of a vertical synchronizing signal and a horizontal-drive signal, to judge according to this vertical synchronizing signal received and this horizontal-drive signal the display data that those liquid crystal pixels each are corresponding.
13. touch control display apparatus according to claim 11, also comprise a storage unit, couple this interference estimation unit and this interference compensation unit, in order to those capacitance interference values stored and provide those liquid crystal pixels corresponding.
The capacitance method for sensing of 14. 1 kinds of touch control display apparatus, comprising:
The capacitance change of multiple touch areas of a contact panel is detected by a touch control sensing circuit; And
The one capacitance interference value correction capacitance change that respectively those touch areas are corresponding of the multiple liquid crystal pixels difference correspondences by an interference compensation unit and according to a display panel.
The capacitance method for sensing of 15. touch control display apparatus according to claim 14, it is characterized in that, the step by this interference compensation unit and according to capacitance change corresponding to this capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively those touch areas each comprises:
By this interference compensation unit and according to those capacitance interference values of those liquid crystal pixels corresponding to those touch areas each and adjacent to capacitance change corresponding to those capacitance interference value corrections those touch areas each of those liquid crystal pixels of those touch areas each.
The capacitance method for sensing of 16. touch control display apparatus according to claim 15, it is characterized in that, by this interference compensation unit and according to those capacitance interference values of those liquid crystal pixels corresponding to those touch areas each and comprise adjacent to the step of capacitance change corresponding to those capacitance interference value corrections those touch areas each of those liquid crystal pixels of those touch areas each:
Summation is carried out to obtain a reference capacitance interference value by those capacitance interference values of those corresponding for those touch areas each liquid crystal pixels and after being multiplied by a corresponding weighted value respectively adjacent to those capacitance interference values of those liquid crystal pixels of those touch areas each by this interference compensation unit, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
The capacitance method for sensing of 17. touch control display apparatus according to claim 16, it is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each be positioned at outside those touch areas each.
The capacitance method for sensing of 18. touch control display apparatus according to claim 14, it is characterized in that, the step by this interference compensation unit and according to capacitance change corresponding to this capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively those touch areas each comprises:
By this interference compensation unit and according to capacitance change corresponding to those capacitance interference value corrections those touch areas each of those liquid crystal pixels corresponding to those touch areas each.
The capacitance method for sensing of 19. touch control display apparatus according to claim 18, it is characterized in that, the step by this interference compensation unit and according to capacitance change corresponding to those capacitance interference value corrections those touch areas each of those liquid crystal pixels corresponding to those touch areas each comprises:
Summation is carried out to obtain a reference capacitance interference value after those capacitance interference values of those corresponding for those touch areas each liquid crystal pixels being multiplied by a corresponding weighted value respectively by this interference compensation unit, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
The capacitance method for sensing of 20. touch control display apparatus according to claim 19, it is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each being positioned at those edges, touch area each.
The capacitance method for sensing of 21. touch control display apparatus according to claim 14, it is characterized in that, the step by this interference compensation unit and according to capacitance change corresponding to this capacitance interference value correction that multiple liquid crystal pixels of a display panel are corresponding respectively those touch areas each comprises:
By this interference compensation unit and according to capacitance change corresponding to part correction those touch areas each of those capacitance interference values of those liquid crystal pixels corresponding to those touch areas each.
The capacitance method for sensing of 22. touch control display apparatus according to claim 21, it is characterized in that, the step by this interference compensation unit and according to capacitance change corresponding to part correction those touch areas each of those capacitance interference values of those liquid crystal pixels corresponding to those touch areas each comprises:
Summation is carried out to obtain a reference capacitance interference value after those capacitance interference values of part of those corresponding for those touch areas each liquid crystal pixels being multiplied by a corresponding weighted value respectively by this interference compensation unit, and according to this reference capacitance interference value correction capacitance change that respectively those touch areas are corresponding.
The capacitance method for sensing of 23. touch control display apparatus according to claim 22, it is characterized in that, this weighted value corresponding to those liquid crystal pixels each being positioned at those touch area central authorities each is greater than this weighted value corresponding to those liquid crystal pixels each being positioned at those edges, touch area each.
The capacitance method for sensing of 24. touch control display apparatus according to claim 14, is characterized in that, also comprise:
By an interference estimation unit, and a grey decision-making of the foundation display data that respectively those liquid crystal pixels are corresponding calculates this capacitance interference value corresponding to those liquid crystal pixels each.
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