CN104657012B - Touch display device and driving method of multiple touch driving electrodes thereof - Google Patents
Touch display device and driving method of multiple touch driving electrodes thereof Download PDFInfo
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- CN104657012B CN104657012B CN201410653354.6A CN201410653354A CN104657012B CN 104657012 B CN104657012 B CN 104657012B CN 201410653354 A CN201410653354 A CN 201410653354A CN 104657012 B CN104657012 B CN 104657012B
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- 238000000034 method Methods 0.000 title description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 32
- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims description 14
- 230000010287 polarization Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 9
- 239000010408 film Substances 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 101100042265 Caenorhabditis elegans sem-2 gene Proteins 0.000 description 1
- 101100042258 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) sem-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
Abstract
The invention relates to a touch display device, which comprises a control unit and a display device. The control unit detects a touch of at least one external object according to capacitive coupling between the touch driving electrodes and the touch sensing electrodes by outputting driving signals to the touch driving electrodes and receiving sensing signals from the touch sensing electrodes. The display device comprises a liquid crystal layer, and a pixel electrode and a common electrode for driving the liquid crystal layer, wherein the common electrode comprises the touch drive electrodes, and the common electrodes except the touch drive electrodes are coupled to a direct current potential to form a shielding area.
Description
Technical field
The present invention is on contactor control device, is shown especially with regard to by the touch-control in contactor control device component integration to display device
Showing device and the driving method of a plurality of touch-control driving electrodes in touch control display apparatus.
Background technology
Many touch control screens can be covered in liquid crystal display (Liquid Crystal by by capacitive character contact panel
Display；LCD formed on).This touch control screen output drive signal is to a plurality of touch-control driving electrodes, and from a plurality of touch-control sensing
Electrode receives sensing signal.When at least one external object is touched or intersecting close to touch-control driving electrodes and touch-control sensing electrode
When near point, the electric capacity between the touch-control driving electrodes and the touch-control sensing electrode will change.Touch control screen can be according to this electricity
Hold the position for changing and judging to touch.
Although by capacitive character contact panel be covered in liquid crystal display can still allow the light from liquid crystal display by,
The brightness that capacitive character contact panel can still result in liquid crystal display reduces.In addition, capacitive character contact panel is covered in liquid crystal display
Device more increases thickness and weight.However, although touch control screen component integration can be avoided into above mentioned problem into liquid crystal display,
Liquid crystal display carries out electromagnetic interference (EMI caused by frame updating；ElectroMagnetic Interference) but can
Influence the mutual capacitance coupling amount between touch-control driving electrodes and touch-control sensing electrode.
The content of the invention
It is an object of the invention to provide a kind of touch control display apparatus and its driving method of a plurality of touch-control driving electrodes, energy
Enough reduce electromagnetic interference.
The purpose of the present invention is realized using following technical scheme.The present invention provides a kind of contactor control device, including：It is more
Bar touch-control driving electrodes, it is configured in the common electrode of driving liquid crystal layer, this wherein beyond a plurality of touch-control driving electrodes is common
DC potential is coupled to electrode, to form shielding area；A plurality of touch-control sensing electrode；And control unit, it is a plurality of to detect this
Touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing, to perform the operation of at least one external object.
The purpose of the present invention can be also applied to the following technical measures to achieve further.
The area of foregoing contactor control device, the wherein shielding area is more than the area of a plurality of touch-control driving electrodes.
Foregoing contactor control device, each of which touch-control sensing electrode include multiple extensions, each of which extension
The parallel a plurality of touch-control driving electrodes, coupled with increasing the mutual capacitance between a plurality of touch-control driving electrodes of the touch-control sensing electrode and this
Amount.
Foregoing contactor control device, the wherein a plurality of touch-control driving electrodes are horizontally arranged and parallel to thin film transistor (TFT)s
(TFT) the horizontal pixel line (horizontal pixel line) of layer renewal scanning, and the drive of a plurality of touch-control driving electrodes
Dynamic direction and the renewal scanning direction of the tft layer are on the contrary, when powered at least one touch-control driving electrodes will influence
During the horizontal pixel line of tft layer renewal scanning, pause drives at least one touch-control driving electrodes, treats the film
The horizontal pixel line of transistor layer renewal scanning is driven again after leaving the coverage of the touch-control driving electrodes, and wherein this is thin
Film transistor includes pixel electrode, and the pixel electrode drives the liquid crystal layer with the common electrode.
Foregoing contactor control device, the wherein shielding area are located at thin film transistor (TFT) (TFT) layer and a plurality of touch-control sensing electricity
Between pole, electromagnetic interference (EMI caused by scanning is updated to reduce the tft layer；ElectroMagnetic
Interference)。
Foregoing contactor control device, the wherein common electrode include a plurality of sub-electrode, and a plurality of sub-electrode is parallel to each other
Arrangement, wherein a plurality of touch-control driving electrodes are continuously or discretely configured in a plurality of sub-electrode, and more parallel to this
Bar sub-electrode.
The purpose of the present invention is also realized using following technical scheme.The present invention provides a kind of display device, including：Picture
Plain electrode；Common electrode, beyond a plurality of touch-control driving electrodes comprising contactor control device, the wherein a plurality of touch-control driving electrodes should
Common electrode is coupled to DC potential, to form shielding area；And liquid crystal layer, positioned at the pixel electrode and the common electrode
Between, to be driven by the pixel electrode and the common electrode.
The purpose of the present invention can be also applied to the following technical measures to achieve further.
The area of foregoing display device, the wherein shielding area is more than the area of a plurality of touch-control driving electrodes.
Foregoing display device, the wherein pixel electrode are located in thin film transistor (TFT) (TFT) layer, and a plurality of touch-control drives
Moving electrode is horizontal pixel line (horizontal pixel that are horizontally arranged and being scanned parallel to tft layer renewal
Line), the wherein driving direction of a plurality of touch-control driving electrodes and the renewal scanning direction of the tft layer is on the contrary, work as quilt
When at least one touch-control driving electrodes of driving are by the horizontal pixel line for influenceing tft layer renewal scanning, pause driving
At least one touch-control driving electrodes, treat that the horizontal pixel line of tft layer renewal scanning leaves at least one touch-control
It is driven again after the coverage of driving electrodes.
Foregoing display device, it further includes thin film transistor (TFT) (TFT) layer, and the wherein shielding area is located at the film crystal
Between tube layer and a plurality of touch-control sensing electrode, electromagnetic interference caused by scanning is updated to reduce the tft layer
(EMI；ElectroMagnetic Interference), wherein a plurality of touch-control driving electrodes are provided drive signal, and certainly
A plurality of touch-control sensing electrode receives sensing signal, with interelectrode according to a plurality of touch-control driving electrodes and a plurality of touch-control sensing
Capacitive couplings, detect the touching of at least one external object.
Foregoing display device, the wherein common electrode include a plurality of sub-electrode, and a plurality of sub-electrode is parallel to each other
Arrangement, wherein a plurality of touch-control driving electrodes are continuously or discretely configured in a plurality of sub-electrode, and more parallel to this
Bar sub-electrode.
Foregoing display device, it further includes a plurality of touch-control sensing electrode of the contactor control device, each of which touch-control sense
Survey electrode and include multiple extensions, and each extension is parallel to a plurality of touch-control driving electrodes, to increase the touch-control sensing
Mutual capacitance coupling amount between electrode and a plurality of touch-control driving electrodes.
Foregoing display device, it further includes the first polarization layer, light shield layer and first substrate, is driven positioned at a plurality of touch-control
On electrode, wherein a plurality of touch-control sensing electrode is located among each layer in a plurality of touch-control driving electrodes, or between each layer.
The purpose of the present invention provides a kind of touch control display apparatus, bag using following technical scheme come the present invention realized again
Include：Control unit, by output drive signal to a plurality of touch-control driving electrodes, and receive sensing from a plurality of touch-control sensing electrode and believe
Number, to detect at least one outside according to a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing
The touching of object；And display device, include liquid crystal layer and drive the pixel electrode and common electrode of the liquid crystal layer, wherein this is common
The a plurality of touch-control driving electrodes are included with electrode, and the common electrode beyond a plurality of touch-control driving electrodes is coupled to direct current
Current potential, to form shielding area.
The purpose of the present invention can be also applied to the following technical measures to achieve further.
The area of foregoing touch control display apparatus, the wherein shielding area is more than the area of a plurality of touch-control driving electrodes.
Foregoing touch control display apparatus, the wherein pixel electrode are located in thin film transistor (TFT) (TFT) layer, and this is a plurality of tactile
Driving electrodes are controlled as horizontal pixel line (horizontal that is horizontally arranged and being scanned parallel to tft layer renewal
Pixel line), the wherein renewal scanning direction phase of the driving direction of a plurality of touch-control driving electrodes and the tft layer
Instead, when powered at least one touch-control driving electrodes are by the horizontal pixel line for influenceing tft layer renewal scanning,
Pause drives at least one touch-control driving electrodes, treats that the horizontal pixel line of tft layer renewal scanning leaves the touch-control
It is driven again after the coverage of driving electrodes.
Foregoing touch control display apparatus, the wherein display device further include thin film transistor (TFT) (TFT) layer, and the blind zone
Domain is located between the tft layer and a plurality of touch-control sensing electrode, when being updated scanning to reduce the tft layer
Caused electromagnetic interference (EMI；ElectroMagnetic Interference).
Foregoing touch control display apparatus, the wherein common electrode include a plurality of sub-electrode, and a plurality of sub-electrode is each other
Arranged in parallel, wherein a plurality of touch-control driving electrodes are continuously or discretely configured in a plurality of sub-electrode, and parallel to
The a plurality of sub-electrode.
Foregoing touch control display apparatus, each of which touch-control sensing electrode includes multiple extensions, and each prolongs
Extending portion is parallel to a plurality of touch-control driving electrodes, to increase the mutual capacitance between the touch-control sensing electrode and a plurality of touch-control driving electrodes
Coupling amount.
Foregoing touch control display apparatus, the wherein display device further include the first polarization layer, light shield layer and first substrate, position
In in a plurality of touch-control driving electrodes, wherein a plurality of touch-control sensing electrode be located at each layer in a plurality of touch-control driving electrodes it
In, or between each layer.
The purpose of the present invention is realized using following technical scheme again.The present invention provides a kind of common electrode, and it is configured
In display device, and the common electrode arranges in pairs or groups pixel electrode to drive liquid crystal layer, and wherein the common electrode includes：It is a plurality of to touch
Driving electrodes are controlled, wherein common electrode beyond a plurality of touch-control driving electrodes is coupled to DC potential, to form blind zone
Domain, the wherein a plurality of touch-control driving electrodes are provided drive signal, and receive sensing signal from a plurality of touch-control sensing electrode, with root
According to a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing, at least one external object is detected
Touching.
The purpose of the present invention provides a plurality of in a kind of contactor control device touch using following technical scheme come the present invention realized again
The driving method of driving electrodes is controlled, the wherein a plurality of touch-control driving electrodes are configured in display device, and the driving method includes：When
When the display device updates horizontal scan pixel line (horizontal pixel line), the contactor control device persistently provides driving
Signal gives at least one touch-control driving electrodes, to carry out mutual capacitance detecting.
The purpose of the present invention can be also applied to the following technical measures to achieve further.
The renewal of foregoing driving method, the wherein driving direction of a plurality of touch-control driving electrodes and horizontal pixel line scans
In the opposite direction.
Foregoing driving method, it is further included：Judge whether the horizontal pixel line in renewal scanning is somebody's turn to do positioned at powered
In the coverage of at least one touch-control driving electrodes；When the horizontal pixel line during renewal scans is located at outside the coverage,
Persistently drive at least one touch-control driving electrodes；When the horizontal pixel line during renewal scans is located in the coverage, temporarily
Stop driving at least one touch-control driving electrodes；And scanned after horizontal pixel line continuous updating to after leaving the coverage,
At least one touch-control driving electrodes are driven again.
By above-mentioned technical proposal, the driving method of touch control display apparatus of the invention and its a plurality of touch-control driving electrodes is extremely
There is following advantages and beneficial effect less：By the present invention, electromagnetic interference can be reduced.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Figure 1A, Figure 1B, Fig. 1 C, Fig. 1 D, Fig. 1 E and Fig. 1 F：For the knot of a touch control display apparatus 100 of the embodiment of the present invention
Structure schematic diagram.
Fig. 2A, Fig. 2 B, Fig. 2 C and Fig. 2 D：Common electrode 146 and a plurality of touch-control driving electrodes 132 for the embodiment of the present invention
Structural representation.
Fig. 3：A plurality of touch-control driving electrodes and the fragmentary, perspective view of a plurality of touch-control sensing electrode for one embodiment of the invention.
Fig. 4：Renewal scanning and the driving side of a plurality of touch-control driving electrodes for the tft layer of the embodiment of the present invention
To fragmentary, perspective view.
Fig. 5：For the block flow diagram of the touch-control driving electrodes driving method of the embodiment of the present invention.
【Main element symbol description】
100：Touch control display apparatus 120：Control unit
130：Touch-control sensing unit 132：Touch-control driving electrodes
132-1~132-y：Touch-control driving electrodes 134：Touch-control sensing electrode
134-1~134-3：Touch-control sensing electrode 140：Display pixel cells
142：Liquid crystal layer 144：Pixel electrode
146：Common electrode 148：Tft layer
150：Light shield layer 152：Colored filter
160：First substrate 162：Second substrate
170：First polarization layer 172：Second polarization layer
180：Backlight module 200：Selection circuit
500~530：Step
D1：The driving direction of touch-control driving electrodes
D2：The renewal scanning direction of tft layer
DG1~DGn：Touch-control driving electrodes group DG1~DGk：Touch-control driving electrodes group
DG1~DGj：Touch-control driving electrodes group EX1~EXz：Extension
PL：Horizontal pixel line SE1~SEm：Sub-electrode
SG1~SGn：Sub-electrode group Vcom：DC potential
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the driving according to a kind of touch control display apparatus proposed by the present invention and its a plurality of touch-control driving electrodes
Embodiment, structure, feature and its effect of method, describe in detail as after.
It is as follows that the present invention will be described in some embodiments.However, in addition to disclosed embodiment, the present invention can also
Other embodiments are widely used in implement.The scope of the present invention is not limited by those embodiments, is with Shen thereafter
Please the scope of the claims be defined.And be that clearer description is provided and makes to be familiar with the content of the invention that this those skilled in the art is understood that the present invention,
Each several part does not have the size relative according to its and drawn in diagram, and some sizes and the ratio regular meeting of other scale dependents are highlighted
And the exaggeration that seems, and incoherent detail section is not also drawn completely, in the hope of the succinct of diagram.
It refer to shown in Figure 1A to Fig. 1 F, it is the structural representation of the touch control display apparatus 100 of the embodiment of the present invention.Touch
Control display device 100 and include control unit 120, touch-control sensing unit 130 and display pixel cells 140.
Touch-control sensing unit 130 includes a plurality of touch-control driving electrodes 132 and a plurality of touch-control sensing electrode 134.Control unit
120 output drive signals receive sensing signal to a plurality of touch-control driving electrodes 132, and from a plurality of touch-control sensing electrode 134, with root
According to the mutual capacitive couplings between a plurality of touch-control driving electrodes 132 and a plurality of touch-control sensing electrode 134, at least one outside thing is detected
The touching of part.
Display pixel cells 140 include liquid crystal layer 142, pixel electrode 144 and common electrode 146.Liquid crystal layer 142 is located at picture
Between plain electrode 144 and common electrode 146, to be driven by pixel electrode 144 and common electrode 146.A plurality of touch-control driving electricity
Pole 132 is configured in common electrode 146.Common electrode 146 beyond a plurality of touch-control driving electrodes 132 is coupled to DC potential,
To form shielding area.
Touch control display apparatus 100 further includes thin film transistor (TFT) (TFT) layer 148, and wherein pixel electrode 144 is configured at film crystalline substance
In body tube layer 148.When tft layer 148 is updated scanning, electromagnetism will be produced to a plurality of touch-control driving electrodes 132 and done
Disturb (EMI；ElectroMagnetic Interference) so influence mutual capacitive couplings detecting.Therefore, common electrode
It is configured on 146 between tft layer 148 and a plurality of touch-control sensing electrode 134, with by the shielding of common electrode 146
Region reduces tft layer 148 and is updated electromagnetic interference caused by scanning.
Touch control display apparatus 100 further includes light shield layer (Black Matrix) 150, the polarization layer of first substrate 160 and first
170.For common electrode 146 between liquid crystal layer 142 and light shield layer 150, light shield layer 150 is located at the base of common electrode 146 and first
Between plate 160, first substrate 160 is located between the polarization layer 170 of light shield layer 150 and first.Furthermore light shield layer 150 includes colour
Optical filter 152.
A plurality of touch-control sensing electrode 134 is configured among each layer in a plurality of touch-control driving electrodes 132, is also configured in
Between each layer in a plurality of touch-control driving electrodes 132.In embodiment, a plurality of touch-control sensing electrode 134 is configured in the first base
Between the polarization layer 170 of plate 160 and first, as shown in Figure 1A.In another embodiment, a plurality of touch-control sensing electrode 134 is configurable
Between light shield layer 150 and first substrate 160, as shown in Figure 1B.In a more embodiment, a plurality of touch-control sensing electrode 134 can
It is configured between light shield layer 150 and a plurality of touch-control driving electrodes 132, as shown in Figure 1 C.In another embodiment, a plurality of touch-control sense
Survey electrode 134 to be configured in light shield layer 150, as shown in figure iD.In a more embodiment, a plurality of touch-control sensing electrode 134 can
It is configured in first substrate 160, as referring to figure 1E.In a more embodiment, a plurality of touch-control sensing electrode 134 is configured in first
In polarization layer 170, as shown in fig. 1F.
Furthermore touch control display apparatus 100 further includes second substrate 162, the second polarization layer 172 and backlight module 180.Pixel
For electrode 144 between backlight module 180 and common electrode 146, the polarization layer 172 of second substrate 162 and second is all located at pixel
Between electrode 144 and backlight module 180.
In embodiment, first substrate 160 is all that transparent material is formed with second substrate 162, and wherein second substrate is
TFT glass.
Common electrode 146 can include a plurality of sub-electrode (sub electrode), wherein a plurality of sub-electrode row parallel to each other
Row.A plurality of sub-electrode can be distinguished into multigroup, and all be coupled to DC potential per a group sub-electrode.A plurality of touch-control driving electrodes are also
Multigroup can be distinguished into, and one or more touch-control driving electrodes 132, each of which group can be included per a group touch-control driving electrodes
Touch-control driving electrodes are all coupled to selection circuit 200, to drive each group's touch-control driving electrodes by the switching of selection circuit 200.Altogether
With may be configured with a group or multigroup touch-control driving electrodes, or a group touch-control driving electrodes in every a group sub-electrode of electrode 146
Also it is configured in two groups of adjacent sub-electrodes.
It refer to Fig. 2A, Fig. 2 B, shown in Fig. 2 C and Fig. 2 D, it is touched for the common electrode 146 of the embodiment of the present invention with a plurality of
Control the structural representation of driving electrodes 132.A plurality of touch-control driving electrodes 132 in a group or multigroup touch-control driving electrodes can be continuous
Ground is discretely configured in every a group sub-electrode of common electrode 146.
It refer to shown in Fig. 2A, the multigroup sub-electrode of common electrode 146 includes first crowd of sub-electrode SG1, second group of son electricity
N-th crowd of sub-electrode SGn of pole SG2 ....A plurality of sub-electrode is all included per a group sub-electrode, wherein a plurality of sub-electrode includes the first son electricity
Pole SE1, the second sub-electrode SE2 ... m sub-electrodes SEm.Multigroup touch-control driving electrodes include first crowd of touch-control driving electrodes DG1,
Second crowd of touch-control driving electrodes DG2 ..., n-th crowd of touch-control driving electrodes DGn, and all include three per a group touch-control driving electrodes
Touch-control driving electrodes 132-1,132-2,132-3.First crowd of touch-control driving electrodes DG1 is configured in first crowd of sub-electrode SG1,
Two crowds of touch-control driving electrodes DG2 are configured in second crowd of sub-electrode SG2 ..., and n-th crowd of touch-control driving electrodes DGn is then configured at n-th group
In sub-electrode SGn.In every a group sub-electrode SG1, SG2 ... SGn of common electrode 146, three touch-control driving electrodes 132-1,
132-2,132-3 are continuously to configure.
It refer to shown in Fig. 2 B, every a group sub-electrode be still respectively arranged at per a group touch-control driving electrodes DG1, DG2 ... DGn
In SG1, SG2 ... SGn.However, in every a group touch-control driving electrodes DG1, DG2 ... DGn, three touch-control driving electrodes 132 are
Discretely configure.For example, in n-th crowd of touch-control driving electrodes DGn, adjacent two touch-controls driving electricity of three touch-control driving electrodes
N-th crowd of sub-electrode SGn the second sub-electrode SE2 is configured between pole 132-1,132-2, three touch-control driving electrodes 132 are in addition
N-th crowd of sub-electrode SGn the 3rd sub-electrode SE3 is configured between adjacent two articles of touch-control driving electrodes 132-2,132-3.
It refer to shown in Fig. 2 C, two groups of touch-control driving electrodes be configured with per a group sub-electrode SG1, SG2 ... SGn, and it is more
Bar touch-control driving electrodes are divided into k group's touch-control driving electrodes DG1, DG2 ... DGk, wherein k=2n.Per a group touch-control driving electrodes
DG1, DG2 ... DGk include two touch-control driving electrodes 132-1,132-2.In every a group touch-control driving electrodes DG1, DG2 ... DGk
In, two touch-control driving electrodes 132 are discretely to configure.For example, in -1 crowd of touch-control driving electrodes DGk-1 of kth, adjacent two
N-th crowd of sub-electrode SGn the second sub-electrode SE2 and the 3rd sub-electrode SE3 are configured between touch-control driving electrodes 132-1,132-2,
And in kth group's touch-control driving electrodes DGk, it is configured with n-th group of sub-electrode between adjacent two touch-control driving electrodes 132-1,132-2
SGn m-2 sub-electrodes SEm-2 and m-1 sub-electrodes SEm-1.
It refer to shown in Fig. 2 D, a plurality of touch-control driving electrodes are divided into j group's touch-control driving electrodes DG1, DG2 ... DGj.It is each
Group's touch-control driving electrodes DG1, DG2 ... DGj two touch-control driving electrodes 132-1,132-2 are configured in same a group sub-electrode
In, it can also be respectively arranged in adjacent two groups of sub-electrodes.Such as first crowd of touch-control driving electrodes DG1 two touch-control driving electrodes
132-1,132-2 are all configured in first crowd of sub-electrode SG1, and first crowd of touch-control driving electrodes DG1 two touch-controls driving
First crowd of sub-electrode SG1 the i-th sub-electrode SEi and i+1 sub-electrode SEi+1 are configured between electrode 132-1,132-2.Second group
Touch-control driving electrodes DG2 two articles of touch-control driving electrodes 132-1,132-2 can then be respectively arranged at first crowd of sub-electrode SG1 and
In two crowds of sub-electrode SG2, wherein being configured between second crowd of touch-control driving electrodes DG2 two touch-control driving electrodes 132-1,132-2
There are first crowd of sub-electrode SG1 m sub-electrodes SEm and second crowd of sub-electrode SG2 the first sub-electrode SE1.
In common electrode 146, the area for being coupled to DC potential Vcom every a group sub-electrode SG1, SG2 ... SGn is big
In the area of a plurality of touch-control driving electrodes 132, that is, the area of shielding area is more than the area of a plurality of touch-control driving electrodes 132,
To reduce the electromagnetic interference from tft layer 148 by shielding area.
With reference to shown in figure 3, it is a plurality of touch-control driving electrodes of the embodiment of the present invention and the office of a plurality of touch-control sensing electrode
Portion's perspective view.A plurality of touch-control driving electrodes 132 are intersected each other with a plurality of touch-control sensing electrode 134.Each touch-control sensing
Electrode 134 includes multiple extensions (extension), and the parallel a plurality of touch-control driving electrodes 132 of each extension, to increase
Add the mutual capacitance coupling amount between touch-control sensing electrode 134 and a plurality of touch-control driving electrodes 132.For example, first touch-control sensing electricity
Pole 134-1 includes the first extension EX1, the second extension EX2, the 3rd extension EX3, the 4th extension EX4 ... z-1 extensions
Portion EXz-1, wherein z extension EXz, z-2y.First extension EX1 and the second extension EX2 are adjacent and parallel to first
Touch-control driving electrodes 132-1, between increase by first touch-control sensing electrode 134-1 and first touch-control driving electrodes 132-1
Mutual capacitance coupling amount.Furthermore the 3rd extension EX3 and the 4th extension EX4 are adjacent and parallel to Article 2 touch-control driving electrodes
132-2, to increase the mutual capacitance coupling amount between first touch-control sensing electrode 134-1 and Article 2 touch-control driving electrodes 132-2.
Similarly, z-1 extensions EXz-1 and z extensions EXz is adjacent and parallel to the y articles touch-control driving electrodes 132-y, with increase
Mutual capacitance coupling amount between first article of touch-control sensing electrode 134-1 and the y articles touch-control driving electrodes 132-y.
Because tft layer 148 updates horizontal pixel line (horizontal pixel line) one by one, to carry out
The renewal of display device picture, when powered at least one touch-control driving electrodes are overlapping or in the tft layer 148
During the horizontal pixel line updated, the drive signal of powered at least one touch-control driving electrodes will disturb what is updated
Horizontal pixel line.In general, contactor control device can be driven a plurality of touch when display device does not update horizontal scan pixel line
Driving electrodes 132 are controlled, to avoid the renewal of drive signal interference level pixel line from scanning.However, the present invention more proposes a kind of touch
The driving method of a plurality of touch-control driving electrodes 132 in display device is controlled, horizontal scan pixel line and driving can be updated simultaneously
A plurality of touch-control driving electrodes 132.First, the driving direction of a plurality of touch-control driving electrodes is designed to and tft layer 148
It is opposite to update scanning direction.When powered at least one touch-control driving electrodes update scanning by tft layer 148 is influenceed
Horizontal pixel line when, pause drive at least one touch-control driving electrodes, treat tft layer 148 renewal scanning level
Pixel line is driven again after leaving the coverage of the touch-control driving electrodes.
It refer to shown in Fig. 4, it drives for the renewal scanning of the tft layer of the embodiment of the present invention with a plurality of touch-control
The fragmentary, perspective view of the driving direction of electrode.The driving direction D1 and tft layer 148 of a plurality of touch-control driving electrodes are more
New scanning direction D2 is opposite.Three touch-control driving electrodes 132-1,132-2 as powered i-th group of touch-control driving electrodes DGi,
During the horizontal pixel line PL updated in the overlapping or close tft layers 148 of 132-3, the pause driving of selection circuit 200
Originally powered i-th group of touch-control driving electrodes DGi, treat that the horizontal pixel line of the renewal scanning of tft layer 148 leaves i-th
It is driven again after group's touch-control driving electrodes DGi coverage.A plurality of touch-control driving electrodes 132 are all horizontally arranged with parallel
In the horizontal pixel line of tft layer 148, and parallel to a plurality of sub-electrode.
Accordingly, the present invention more proposes a kind of driving method of a plurality of touch-control driving electrodes 132 in touch control display apparatus, please join
Examine shown in Fig. 5, it is the block flow diagram of the touch-control driving electrodes driving method of the embodiment of the present invention.First, such as step 500 institute
Show, when touch control display apparatus updates horizontal scan pixel line, touch control display apparatus persistently provides drive signal at least one
Touch-control driving electrodes, to carry out mutual capacitance detecting.Then, as indicated in step 510, the horizontal pixel line PL in renewal scanning is judged
Whether in the coverage of powered at least one touch-control driving electrodes.Then, as indicated in step 520, when renewal is swept
When the horizontal pixel line PL retouched is located at outside coverage, at least one touch-control driving electrodes are persistently driven, and continuously carry out
Step 510.Then, as shown in step 530, when the horizontal pixel line PL during renewal scans enters in coverage, pause is driven
At least one touch-control driving electrodes are moved, and continuously carry out step 510.Afterwards, treat horizontal pixel line PL continuous updatings scan to
After leaving the coverage, then step 520 is performed, drive at least one touch-control driving electrodes.
According to a kind of above-mentioned, contactor control device of present invention proposition, as shown in Figure 1A to Fig. 1 F.Contactor control device includes a plurality of touch-control
Driving electrodes 132, a plurality of touch-control sensing electrode 134 and control unit 120.A plurality of touch-control driving electrodes 132 are configured at driving liquid
In the common electrode 146 of crystal layer 142, wherein the common electrode 146 beyond a plurality of touch-control driving electrodes 132 is coupled to DC potential
Vcom, to form shielding area.Shielding area is configured between tft layer 148 and a plurality of touch-control sensing electrode 134,
Whereby electromagnetic interference caused by scanning is updated to reduce tft layer 148.Control unit 120 detects a plurality of touch-control
Capacitive couplings between driving electrodes 132 and a plurality of touch-control sensing electrode 134, to perform the operation of at least one external object.
The present invention more proposes a kind of display device, as shown in Figure 1A to Fig. 1 F.Display device includes pixel electrode 144, is total to
With electrode 146 and liquid crystal layer 142.Common electrode 146 configures a plurality of touch-control driving electrodes 132 of foregoing contactor control device, and more
Common electrode 146 beyond bar touch-control driving electrodes 132 is coupled to DC potential Vcom, to form shielding area.Liquid crystal layer 142
Between pixel electrode 144 and common electrode 146, to drive liquid crystal layer 142 by pixel electrode 144 and common electrode 146.
The present invention reintroduces a kind of touch control display apparatus, as shown in Figure 1A to Fig. 1 F.It is single that touch control display apparatus includes control
Member 120 and aforementioned display.Control unit 120 by output drive signal to a plurality of touch-control driving electrodes 132, and from a plurality of
Touch-control sensing electrode 134 receives sensing signal, with according between a plurality of touch-control driving electrodes 132 and a plurality of touch-control sensing electrode 134
Capacitive couplings detect the touching of at least one external object.Display device includes liquid crystal layer 142 with driving liquid crystal layer 142
Pixel electrode 144 and common electrode 146, wherein common electrode 146 include a plurality of touch-control driving electrodes 132, and a plurality of touch-control
Common electrode 146 beyond driving electrodes 132 is coupled to DC potential Vcom, to form shielding area.
The present invention more proposes a kind of common electrode 146, as shown in Figure 1A to Fig. 1 F.Common electrode 146 is configured at display dress
In putting, and common electrode 146 arranges in pairs or groups pixel electrode 144 to drive liquid crystal layer 142.Common electrode 146 drives comprising a plurality of touch-control
Electrode 132, and the common electrode 146 beyond a plurality of touch-control driving electrodes 142 is coupled to DC potential Vcom, to form shielding
Region.Furthermore a plurality of touch-control driving electrodes 132 are provided drive signal, and receive sensing letter from a plurality of touch-control sensing electrode 134
Number, with least one according to the capacitive couplings between a plurality of touch-control driving electrodes 132 and a plurality of touch-control sensing electrode 134, detecting
The touching of external object.
Remaining correlative detail is had revealed that in described above, will not be repeated here.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (21)
1. a kind of display device, it is characterised in that it includes：
Pixel electrode；
Common electrode, this beyond a plurality of touch-control driving electrodes comprising contactor control device, the wherein a plurality of touch-control driving electrodes are common
DC potential is coupled to electrode, to form shielding area；And
Liquid crystal layer, between the pixel electrode and the common electrode, to be driven by the pixel electrode and the common electrode.
2. display device according to claim 1, it is characterised in that wherein it is a plurality of tactile to be more than this for the area of the shielding area
Control the area of driving electrodes.
3. display device according to claim 1, it is characterised in that wherein the pixel electrode is located in tft layer,
And a plurality of touch-control driving electrodes are horizontal pixel line that is horizontally arranged and being scanned parallel to tft layer renewal, its
In the driving direction of a plurality of touch-control driving electrodes and the renewal scanning direction of the tft layer on the contrary, when it is powered extremely
When few touch-control driving electrodes will influence the horizontal pixel line of tft layer renewal scanning, pause driving this at least one
Bar touch-control driving electrodes, treat that the horizontal pixel line of tft layer renewal scanning leaves at least one touch-control driving electrodes
Coverage after be driven again.
4. display device according to claim 1, it is characterised in that it further includes tft layer, wherein the blind zone
Domain is located between the tft layer and a plurality of touch-control sensing electrode, when being updated scanning to reduce the tft layer
Caused electromagnetic interference, the wherein a plurality of touch-control driving electrodes are provided drive signal, and are received from a plurality of touch-control sensing electrode
Sensing signal, so that according to a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing, detecting is at least
The touching of one external object.
5. display device according to claim 1, it is characterised in that wherein the common electrode includes a plurality of sub-electrode, and
The a plurality of sub-electrode is arranged in parallel with each other, and wherein a plurality of touch-control driving electrodes are continuously or discretely configured at more strip electricity
In extremely, and parallel to a plurality of sub-electrode.
6. display device according to claim 1, it is characterised in that it further includes a plurality of touch-control sensing of the contactor control device
Electrode, each of which touch-control sensing electrode includes multiple extensions, and each extension drives parallel to a plurality of touch-control
Electrode, to increase the mutual capacitance coupling amount between the touch-control sensing electrode and a plurality of touch-control driving electrodes.
7. display device according to claim 1, it is characterised in that it further includes the first polarization layer, light shield layer and the first base
Plate, in a plurality of touch-control driving electrodes, wherein a plurality of touch-control sensing electrode is located in a plurality of touch-control driving electrodes
Among each layer, or between each layer.
8. a kind of contactor control device, it is characterised in that it includes：
A plurality of touch-control driving electrodes, it is configured in the common electrode of driving liquid crystal layer, wherein beyond a plurality of touch-control driving electrodes
The common electrode be coupled to DC potential, to form shielding area；
A plurality of touch-control sensing electrode；And
Control unit, a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing are detected, to perform
The operation of at least one external object.
9. contactor control device according to claim 8, it is characterised in that wherein it is a plurality of tactile to be more than this for the area of the shielding area
Control the area of driving electrodes.
10. contactor control device according to claim 8, it is characterised in that each of which touch-control sensing electrode includes multiple prolong
Extending portion, parallel a plurality of touch-control driving electrodes of each of which extension, to increase the touch-control sensing electrode and a plurality of touch-control
Mutual capacitance coupling amount between driving electrodes.
11. contactor control device according to claim 8, it is characterised in that wherein a plurality of touch-control driving electrodes are horizontally arranged
And the horizontal pixel line of scanning is updated parallel to tft layer, and the driving direction of a plurality of touch-control driving electrodes is with being somebody's turn to do
The renewal scanning direction of tft layer is on the contrary, when powered at least one touch-control driving electrodes will influence the film crystal
During the horizontal pixel line of tube layer renewal scanning, pause drives at least one touch-control driving electrodes, treats the tft layer more
The horizontal pixel line newly scanned is driven again after leaving the coverage of the touch-control driving electrodes, wherein the thin film transistor (TFT) bag
Containing pixel electrode, the pixel electrode drives the liquid crystal layer with the common electrode.
12. contactor control device according to claim 8, it is characterised in that wherein the shielding area be located at tft layer with
Between a plurality of touch-control sensing electrode, electromagnetic interference caused by scanning is updated to reduce the tft layer.
13. contactor control device according to claim 8, it is characterised in that wherein the common electrode includes a plurality of sub-electrode, and
And a plurality of sub-electrode is arranged in parallel with each other, wherein a plurality of touch-control driving electrodes are continuously or discretely configured at more strips
In electrode, and parallel to a plurality of sub-electrode.
14. a kind of touch control display apparatus, it is characterised in that it includes：
Control unit, by output drive signal to a plurality of touch-control driving electrodes, and receive and sense from a plurality of touch-control sensing electrode
Signal, with least one outer according to a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings detecting of touch-control sensing
The touching of portion's object；And
Display device, comprising liquid crystal layer and the pixel electrode and common electrode that drive the liquid crystal layer, the wherein common electrode includes
The a plurality of touch-control driving electrodes, and the common electrode beyond a plurality of touch-control driving electrodes is coupled to DC potential, with shape
Into shielding area.
15. touch control display apparatus according to claim 14, it is characterised in that wherein the area of the shielding area, which is more than, is somebody's turn to do
The area of a plurality of touch-control driving electrodes.
16. touch control display apparatus according to claim 14, it is characterised in that wherein the pixel electrode is located at film crystal
In tube layer, and a plurality of touch-control driving electrodes are horizontal picture that is horizontally arranged and being scanned parallel to tft layer renewal
Plain line, the wherein driving direction of a plurality of touch-control driving electrodes and the renewal scanning direction of the tft layer are on the contrary, work as quilt
When at least one touch-control driving electrodes of driving are by the horizontal pixel line for influenceing tft layer renewal scanning, pause driving
At least one touch-control driving electrodes, treat that the horizontal pixel line of tft layer renewal scanning leaves the touch-control driving electrodes
Coverage after be driven again.
17. touch control display apparatus according to claim 14, it is characterised in that wherein the display device further includes film crystalline substance
Body tube layer, and the shielding area is located between the tft layer and a plurality of touch-control sensing electrode, to reduce film crystalline substance
Body tube layer is updated electromagnetic interference caused by scanning.
18. touch control display apparatus according to claim 14, it is characterised in that wherein the common electrode includes more strips electricity
Pole, and a plurality of sub-electrode is arranged in parallel with each other, and wherein a plurality of touch-control driving electrodes are continuously or discretely configured at this
In a plurality of sub-electrode, and parallel to a plurality of sub-electrode.
19. touch control display apparatus according to claim 14, it is characterised in that each of which touch-control sensing electrode includes
Multiple extensions, and each extension is parallel to a plurality of touch-control driving electrodes, it is more with this to increase the touch-control sensing electrode
Mutual capacitance coupling amount between bar touch-control driving electrodes.
20. touch control display apparatus according to claim 14, it is characterised in that wherein it is inclined to further include first for the display device
Shake layer, light shield layer and first substrate, and in a plurality of touch-control driving electrodes, wherein it is more to be located at this for a plurality of touch-control sensing electrode
Among each layer in bar touch-control driving electrodes, or between each layer.
21. a kind of common electrode, it is configured in display device, and the common electrode arranges in pairs or groups pixel electrode to drive liquid crystal
Layer, it is characterised in that wherein the common electrode includes：
The common electrode beyond a plurality of touch-control driving electrodes, the wherein a plurality of touch-control driving electrodes is coupled to DC potential, with
Form shielding area,
Wherein a plurality of touch-control driving electrodes are provided drive signal, and receive sensing signal from a plurality of touch-control sensing electrode, with
According to a plurality of touch-control driving electrodes and a plurality of interelectrode capacitive couplings of touch-control sensing, at least one external object is detected
Touching.
Priority Applications (1)
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| CN201711308450.7A CN108073327B (en) | 2013-11-15 | 2014-11-17 | Driving method of multiple touch driving electrodes in touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| TW102141551 | 2013-11-15 | ||
| TW102141551A TWI636300B (en) | 2013-11-15 | 2013-11-15 | Touch display and method for driving a plurality of touch driving electrodes of touch display |
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| CN201711308450.7A Division CN108073327B (en) | 2013-11-15 | 2014-11-17 | Driving method of multiple touch driving electrodes in touch display device |
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| CN104657012B true CN104657012B (en) | 2018-01-05 |
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| CN201711308450.7A Active CN108073327B (en) | 2013-11-15 | 2014-11-17 | Driving method of multiple touch driving electrodes in touch display device |
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| KR102489827B1 (en) * | 2015-12-31 | 2023-01-17 | 엘지디스플레이 주식회사 | Display device |
| TWI621986B (en) * | 2016-04-20 | 2018-04-21 | Egalax_Empia Tech Inc | Pressure sensing touch display device |
| CN107402668B (en) * | 2016-05-19 | 2020-08-28 | 禾瑞亚科技股份有限公司 | Touch method, touch processing device and electronic system for avoiding pixel update interference |
| KR102365490B1 (en) * | 2016-07-13 | 2022-02-18 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Input/output panel, input/output device, and semiconductor device |
| TWI754825B (en) * | 2019-06-28 | 2022-02-11 | 大陸商北京集創北方科技股份有限公司 | Touch method, touch device and information processing device |
| TWI712933B (en) * | 2020-04-28 | 2020-12-11 | 義隆電子股份有限公司 | Touch and display device with fingerprint sensing function and touch sensing device |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI636300B (en) | 2018-09-21 |
| TW201518807A (en) | 2015-05-16 |
| CN108073327A (en) | 2018-05-25 |
| CN108073327B (en) | 2021-04-09 |
| CN104657012A (en) | 2015-05-27 |
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