CN106773176A - Visual angle changeable liquid crystal display device and driving method - Google Patents
Visual angle changeable liquid crystal display device and driving method Download PDFInfo
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- CN106773176A CN106773176A CN201710002064.9A CN201710002064A CN106773176A CN 106773176 A CN106773176 A CN 106773176A CN 201710002064 A CN201710002064 A CN 201710002064A CN 106773176 A CN106773176 A CN 106773176A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 175
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000007 visual effect Effects 0.000 title claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 77
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 7
- 230000005684 electric field Effects 0.000 description 17
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 6
- 239000010409 thin film Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005685 electric field effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 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
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- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
-
- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
A kind of visual angle changeable liquid crystal display device and driving method, wherein liquid crystal display device includes display panel, display panel includes first substrate, second substrate and the liquid crystal layer between first substrate and second substrate, first substrate is being provided with touch control line layer and touch-control sensing electrode layer towards the side of liquid crystal layer, touch control line layer includes a plurality of touch control line, touch-control sensing electrode layer includes the multiple touch-control sensing electrodes being arranged in array, second substrate is being provided with public electrode and pixel electrode towards the side of liquid crystal layer, and public electrode applies direct current common electric voltage；Each frame picture of display panel includes display time period and the touch-control time period, and in the display time period, the touch-control sensing electrode in touch-control sensing electrode layer applies d. c. voltage signal or ac voltage signal to realize width view angle switch；Touch-control sensing electrode in touch-control time period, touch-control sensing electrode layer applies touch control detection voltage signal to realize touch control detection.
Description
Technical field
The present invention relates to the technical field of liquid crystal display, the changeable liquid crystal display device in more particularly to a kind of visual angle and
Driving method.
Background technology
Liquid crystal display device (liquid crystal display, LCD) has good image quality, small volume, lightweight, low drive
The relatively low advantage of dynamic voltage, low-power consumption, radiationless and manufacturing cost, occupies an leading position in flat display field.Liquid crystal
Showing device includes opposed colored filter substrate (color filter, CF) and thin-film transistor array base-plate (TFT
) and sandwiched liquid crystal layer (LC layer) therebetween array.
Present liquid crystal display device gradually develops towards wide viewing angle direction, such as using in-plane-switching mode (IPS) or edge
The liquid crystal display device of field switch pattern (FFS) can realize visual angle wider.However, today's society people increasingly focus on
The privacy of oneself is protected, there are many things and is not liked to take out and share with people.In public, always wish that oneself is seeing the mobile phone
Or content is secrecy when browsing computer.Therefore, the display of single visual angle pattern can not meet user's
Demand.In addition to the demand of wide viewing angle, under the occasion for needing peep-proof, it is also desirable to display device can be switched or be adjusted
To narrow viewing angle pattern.
In order to realize the width view angle switch of liquid crystal display device, it is using colored filter substrate side to have a kind of mode
Viewing angle control electrode give liquid crystal molecule apply a vertical electric field, to realize narrow viewing angle pattern.Please join Fig. 1 and Fig. 2, liquid crystal
Showing device includes first substrate 11, second substrate 12 and the liquid crystal layer 13 between first substrate 11 and second substrate 12, the
One substrate 11 is colored filter substrate, and second substrate 12 is thin-film transistor array base-plate, and wherein first substrate 11 is provided with
Viewing angle control electrode 111, second substrate 12 is provided with pixel electrode (not shown) and public electrode (not shown).
As shown in figure 1, when needing wide viewing angle to show, the viewing angle control electrode 111 of first substrate 11 applies and common electrical
Pole identical voltage, makes the potential difference between the public electrode of viewing angle control electrode 111 and second substrate 12 be zero, liquid crystal display
Device realizes that wide viewing angle shows under the face internal electric field between pixel electrode and public electrode.
As shown in Fig. 2 when needing narrow viewing angle to show, the viewing angle control electrode 111 of first substrate 11 applies and common electrical
, there is certain potential difference between the public electrode for making viewing angle control electrode 111 and second substrate 12, now in extremely different voltage
A vertical direction electric field (as shown in arrow E in figure) is produced between first substrate 11 and second substrate 12, in liquid crystal layer 13
Face internal electric field of the liquid crystal molecule between pixel electrode and public electrode under while horizontally rotate, can be because vertical direction electricity
And incline and tilt, this characteristic of liquid crystal can make to occur during dark-state wide-angle observation light leak, and make liquid crystal display device big
The reduction of view directions contrast, finally realizes that narrow viewing angle shows.
As shown in figure 3, when narrow viewing angle shows, added voltage is generally periodically friendship on viewing angle control electrode 111
Stream voltage, added voltage is direct current common electric voltage (i.e. DC Vcom), the alternating current of viewing angle control electrode 111 on public electrode
Press the direct current common electric voltage around public electrode to fluctuate up and down, the alternating current on viewing angle control electrode 111 is applied to shown in figure
Press as triangular wave and its frequency is identical with the frame frequency (i.e. frame frequency) of liquid crystal display device, that is, liquid crystal display is filled
Put it is every refreshing 1 frame (frame) picture, on viewing angle control electrode 111 added alternating voltage equally refresh a cycle and with every frame
The refreshing of picture keeps synchronous.
When narrow viewing angle shows, the voltage of the pixel electrode in each sub-pixel can be controlled above-mentioned liquid crystal display device by visual angle
The alternating voltage coupling of electrode processed 111, causes the voltage of pixel electrode to change after charging.To be applied to visual angle in Fig. 3
As a example by alternating voltage in coordination electrode 111, because viewing angle control electrode 111 is the plane-shape electrode that covers whole panel, apply
There is larger voltage jump in the starting stage (dashed lines shown in frame) in the alternating voltage on viewing angle control electrode 111
(voltage is from minimum value to maximum and slope is larger), the alternating voltage the starting stage voltage jump in whole panel
The voltage coupling influence of pixel is larger.
As shown in figure 4, liquid crystal display device is scanned when a frame picture is shown along direction from top to bottom, it is right
Should be in the starting stage of the alternating voltage, liquid crystal display device is just in the scanning to upper end picture, therefore liquid crystal display
The sub-pixel of device upper end can be charged to correct driving voltage, the alternating voltage the starting stage voltage jump to liquid crystal
The coupling influence of display device upper end is smaller, but for the sub-pixel of liquid crystal display device lower end, at the beginning of the alternating voltage
, it is necessary to can be just charged to until liquid crystal display device lower end is scanned correct after the voltage jump coupling influence in stage beginning
Driving voltage so that the alternating voltage the starting stage voltage jump to the voltage coupling of liquid crystal display device lower end sub-pixel
There is long-time in sound of taking a group photo, easily forming slight regional banding display inequality near liquid crystal display device lower end
(band mura).The method that prior art solves the problem is by the alternating voltage to being applied on viewing angle control electrode
Drive waveforms and driving voltage optimize the influence uneven to reduce caused display, but cannot be completely eliminated.
The content of the invention
It is convenient to realize not it is an object of the invention to provide a kind of visual angle changeable liquid crystal display device and driving method
With the width view angle switch of occasion, can also be improved by adjusting the sequential of applied ac voltage signal and be filled in liquid crystal display
Put the problem of lower end forming region banding display uneven (band mura).
The embodiment of the present invention provides a kind of visual angle changeable liquid crystal display device, including display panel, the display panel
The second substrate that is oppositely arranged including first substrate and the first substrate and between the first substrate and the second substrate
Liquid crystal layer, the first substrate is being provided with touch control line layer and touch-control sensing electrode layer, the touch-control line towards the side of the liquid crystal layer
Road floor includes a plurality of touch control line, and the touch-control sensing electrode layer includes the multiple touch-control sensing electrodes being arranged in array, and this second
Substrate is being provided with public electrode and pixel electrode towards the side of the liquid crystal layer, and the public electrode applies direct current common electric voltage；Should
Each frame picture of display panel includes display time period and touch-control time period, in the display time period, the touch-control sensing electrode
Touch-control sensing electrode in layer applies d. c. voltage signal or ac voltage signal to realize width view angle switch；In the touch-control
Between section, touch-control sensing electrode in the touch-control sensing electrode layer applies touch control detection voltage signal to realize touch control detection.
Further, in the display time period, when the touch-control sensing electrode in the touch-control sensing electrode layer applies direct current
Pressure signal or the first ac voltage signal, and the d. c. voltage signal or first ac voltage signal and the direct current common electric voltage
Between potential difference be less than the first preset value when, the liquid crystal display device is in the first field-of-view mode；In the display time period,
When in the touch-control sensing electrode layer touch-control sensing electrode apply the second ac voltage signal, and second ac voltage signal with
When potential difference between the direct current common electric voltage is more than the second preset value, the liquid crystal display device is in second field-of-view mode.
Further, the liquid crystal layer uses positivity liquid crystal molecule, and the first field-of-view mode is wide viewing angle pattern, and this second
It is narrow viewing angle pattern to plant field-of-view mode.
Further, the liquid crystal layer uses negative liquid crystal molecule, and the first field-of-view mode is narrow viewing angle pattern, and this second
It is wide viewing angle pattern to plant field-of-view mode.
Further, insulating barrier is provided between touch control line layer and the touch-control sensing electrode layer, touch control line layer
In every one end of touch control line electrically connected by contact hole touch-control sensing electrode corresponding with the touch-control sensing electrode layer, this
Every other end of touch control line is electrically connected with touch-control driving chip in touch control line layer.
The embodiment of the present invention also provides a kind of driving method of above-mentioned liquid crystal display device, including：
Apply direct current common electric voltage to the public electrode；
When needing the liquid crystal display device to switch to the first field-of-view mode, in the display time period, to the touch-control sense
The touch-control sensing electrode in electrode layer is answered to apply d. c. voltage signal or the first ac voltage signal, the wherein d. c. voltage signal
Or the potential difference between first ac voltage signal and the direct current common electric voltage is less than the first preset value；And in the touch-control
Between section, in the touch-control sensing electrode layer touch-control sensing electrode apply touch control detection voltage signal；
When needing the liquid crystal display device to switch to second field-of-view mode, in the display time period, to the touch-control sense
The touch-control sensing electrode in electrode layer is answered to apply the second ac voltage signal, wherein second ac voltage signal is public with the direct current
Potential difference between common voltage is more than the second preset value；And in the touch-control time period, to touching in the touch-control sensing electrode layer
Control induction electrode applies touch control detection voltage signal.
Further, under the first field-of-view mode, the d. c. voltage signal or first ac voltage signal with should
Potential difference between direct current common electric voltage is less than 1V；Under second field-of-view mode, second ac voltage signal is straight with this
Potential difference between stream common electric voltage is more than 2V.
Further, when the liquid crystal layer uses positivity liquid crystal molecule, the first field-of-view mode is wide viewing angle pattern, should
Second field-of-view mode is narrow viewing angle pattern；When the liquid crystal layer uses negative liquid crystal molecule, the first field-of-view mode is narrow
Field-of-view mode, second field-of-view mode is wide viewing angle pattern.
Further, in the display time period, apply second to the touch-control sensing electrode in the touch-control sensing electrode layer and hand over
During stream voltage signal, specifically include：The display panel is divided into the multiple viewing areas for setting gradually along scanning direction, to every
Corresponding touch-control sensing electrode applies second ac voltage signal respectively in individual viewing area, and each viewing area is starting
During scanning, the second ac voltage signal applied to corresponding touch-control sensing electrode in the viewing area is in voltage max.
Further, each viewing area correspondence a line or the multirow touch-control sensing electrode in the plurality of viewing area.
Further, the waveform of second ac voltage signal is the triangular wave being mutated upwards with voltage.
Further, the liquid crystal display device is provided with view angle switch button, for being sent out to the liquid crystal display device for user
Go out view angle switch signal.
Visual angle provided in an embodiment of the present invention changeable liquid crystal display device and driving method, using touch-control sensing electrode
The mode of time-sharing multiplex is taken, image is shown with touch control detection alternately, realized view angle switch control and touched with embedded
Control is combined.Wherein, show that the stage (showing the time period) controls the voltage for being applied to touch-control sensing electrode to believe by image
Number, you can view angle switch control of the display panel between wide viewing angle pattern and narrow viewing angle pattern is realized, facilitates liquid crystal display to fill
The use under open or secret difference occasion is put, and without still further setting viewing angle control electrode in first substrate, can letter
Change processing procedure, reduces cost and reduce module thickness.
Further, can also be divided by the way that display panel to be divided into the multiple viewing areas for setting gradually along scanning direction
The second ac voltage signal Gei not be applied by corresponding touch-control sensing electrode in each viewing area, when each viewing area starts to sweep
When retouching, make to be applied to the second ac voltage signal in the viewing area on corresponding touch-control sensing electrode and be just in its voltage
At maximum, reaching improves existing asking at liquid crystal display device lower end forming region banding display uneven (band mura)
Topic.
Brief description of the drawings
Fig. 1 is schematic cross-section of the one of which liquid crystal display device in wide viewing angle.
Fig. 2 is schematic cross-section of the liquid crystal display device in narrow viewing angle in Fig. 1.
Fig. 3 is the voltage waveform view being applied in narrow viewing angle in Fig. 2 on viewing angle control electrode.
Fig. 4 is the floor map that band mura occurs in liquid crystal display device in narrow viewing angle.
Fig. 5 is schematic cross-section of the liquid crystal display device in wide viewing angle in first embodiment of the invention.
Fig. 6 be liquid crystal display device in Fig. 5 first substrate in touch control line layer and the planar junction of touch-control sensing electrode layer
Structure schematic diagram.
Fig. 7 is one of which driver' s timing schematic diagram of the liquid crystal display device in wide viewing angle in Fig. 5.
Fig. 8 is another driver' s timing schematic diagram of the liquid crystal display device in wide viewing angle in Fig. 5.
Fig. 9 is schematic cross-section of the liquid crystal display device in narrow viewing angle in Fig. 5.
Figure 10 is a kind of driver' s timing schematic diagram of the liquid crystal display device in narrow viewing angle in Fig. 9.
Figure 11 is schematic cross-section of the liquid crystal display device in narrow viewing angle in second embodiment of the invention.
Figure 12 is schematic cross-section of the liquid crystal display device in wide viewing angle in Figure 11.
Figure 13 a to Figure 13 b are the floor map of liquid crystal display device in third embodiment of the invention.
Specific embodiment
Further to illustrate the present invention to reach technical approach and effect that predetermined goal of the invention is taken, below in conjunction with
Drawings and Examples, to specific embodiment of the invention, structure, feature and its effect, describe in detail as after.
With developing rapidly for Display Technique, touch-screen (Touch Panel) is gradually in the life of people.Mesh
Before, touch-screen can be divided into according to composition structure：Covering surface-type touch-screen (On Cell Touch Panel) and embedded
Touch-screen (In Cell Touch Panel).Wherein, the touch control electrode of touch-screen is embedded in liquid crystal display by In-cell touch panel
Screen is internal, the cost of manufacture of touch-screen can be reduced again, by the green grass or young crops of major panel producers with the overall thickness of thinning module
Look at.The embodiment of the present invention is to provide a kind of liquid crystal display device with In-cell touch panel, and it can realize different occasions
Width view angle switch, can also improve existing in the regionality formed near liquid crystal display device lower end by adjusting driver' s timing
The problem of banding display uneven (band mura).
[first embodiment]
Fig. 5 is schematic cross-section of the liquid crystal display device in wide viewing angle in first embodiment of the invention, please join Fig. 5, should
Liquid crystal display device includes display panel 20, display panel 20 include that first substrate 21 and first substrate 21 be oppositely arranged the
Two substrates 22 and the liquid crystal layer between first substrate 21 and second substrate 22 23.Wherein, first substrate 21 is colorized optical filtering
Plate base, second substrate 22 is thin-film transistor array base-plate.
The present embodiment provide liquid crystal display device be using plane inner switching type (In-Plane Switching, IPS),
The liquid crystal display device of fringe field switch type (Fringe Field Switching, FFS) isotype, public electrode and pixel
Electrode is both formed on same substrate (i.e. thin-film transistor array base-plate), and display is applied between public electrode and pixel electrode
During electric field, liquid crystal molecule rotates to obtain wider visual angle in the plane almost parallel with substrate.In the present embodiment, with
The liquid crystal display device is illustrated as a example by fringe field switch type (FFS).
First substrate 21 is being provided with touch control line layer 211, touch-control sensing electrode layer 213 and the towards the side of liquid crystal layer 23
One insulating barrier 215.First insulating barrier 215 is located between touch control line layer 211 and touch-control sensing electrode layer 213.Touch control line layer
211 and touch-control sensing electrode layer 213 In-cell touch panel (In Cell Touch Panel) is formed in the first substrate 21.
Please join Fig. 6, be that the planar structure of touch control line layer 211 and touch-control sensing electrode layer 213 in first substrate 21 is illustrated
Figure, touch control line layer 211 includes a plurality of touch control line 212, and touch-control sensing electrode layer 213 includes the multiple touch-controls being arranged in array
Touch-control sensing electrode 214 in induction electrode 214, i.e. touch-control sensing electrode layer 213 is arranged in multirow and multiple row, per a line touch-control
, along scan-line direction, each row touch-control sensing electrode 214 is along data wire direction for induction electrode 214.In first insulating barrier 215
Corresponding each touch-control sensing electrode 214 is provided with contact hole 216, and one end of every touch control line 212 passes through in touch control line layer 211
The touch-control sensing electrode 214 corresponding with touch-control sensing electrode layer 213 of contact hole 216 is electrically connected, every in touch control line layer 211
The other end of touch control line 212 is electrically connected with touch-control driving chip 30.
It is to be appreciated that first substrate 21 is additionally provided with the structures such as color blocking layer, black matrix (BM), flatness layer, but due to these
Structure is uncorrelated to the present invention, will not be described here.
Second substrate 22 is being provided with public electrode 221, the insulating barrier of pixel electrode 222 and second towards the side of liquid crystal layer 23
223.Second insulating barrier 223 is located between public electrode 221 and pixel electrode 222.It will be understood by those skilled in the art that second
Substrate 22 is additionally provided with scan line and data wire, and multi-strip scanning line intersects to limit with a plurality of data lines and forms what is be arranged in array
Multiple sub-pixels (sub-pixel).Pixel electrode 222 and thin film transistor (TFT) (TFT) are provided with each sub-pixel, each film is brilliant
Body pipe includes grid, source electrode and drain electrode, and wherein grid electrically connects corresponding scan line, and source/drain electrically connects corresponding data
Line, drain/source electrically connects corresponding pixel electrode 222.
Public electrode 221, pixel electrode 222 can use tin indium oxide (ITO), indium oxide with touch-control sensing electrode 214
The electrically conducting transparent materials such as zinc (IZO) are made.Wherein, public electrode 221 be used for when picture show applying common electric voltage (
Vcom), in the embodiment of the present invention, no matter under wide viewing angle pattern or under narrow viewing angle pattern, the electricity that public electrode 221 applies
Pressure signal is direct current common electric voltage (i.e. DC Vcom).Touch-control sensing electrode 214 takes time-sharing multiplex to have viewing angle control concurrently and touch
Control sensing double duty, is on the one hand used to control the display panel 20 to carry out view angle switch, on the other hand in touch-control in the display stage
Stage is detected for touch-control sensing, such as following in detail.
In the present embodiment, the liquid crystal molecule in liquid crystal layer 23 is positivity liquid crystal molecule, and it is fast that positivity liquid crystal molecule possesses response
Advantage.Such as Fig. 5, under original state (i.e. display panel 20 does not apply the situation of any voltage), the positivity in liquid crystal layer 23
Liquid crystal molecule is presented the lie low attitude substantially parallel with substrate 21,22, long axis direction and the substrate 21,22 of positivity liquid crystal molecule
Surface is substantially parallel.
Please join Fig. 5 to Figure 10, each frame (frame) picture of display panel 20 includes display time period T1 and the touch-control time
Section T2.In display time period T1, the touch-control sensing electrode 214 in touch-control sensing electrode layer 213 applies d. c. voltage signal or friendship
Voltage signal is flowed to realize the width view angle switch of display panel 20；In touch-control time period T2, in touch-control sensing electrode layer 213
Touch-control sensing electrode 214 applies touch control detection voltage signal to realize the touch control detection of display panel 20.
Please join Fig. 7, be one of which driver' s timing schematic diagram of the liquid crystal display device in wide viewing angle, in the display time period
T1, when the touch-control sensing electrode 214 in touch-control sensing electrode layer 213 applies d. c. voltage signal and the d. c. voltage signal and applies
When the potential difference being added between the direct current common electric voltage on public electrode 221 (DC Vcom) is less than the first preset value (such as 1V), liquid
Crystal device is in the first field-of-view mode (being wide viewing angle pattern in the present embodiment).To realize wide viewing angle pattern, in display
Time period T1, direct current of the d. c. voltage signal applied on touch-control sensing electrode 214 preferably with applying on public electrode 221 is public
Voltage is equal, i.e., the direct current common electrical applied on the d. c. voltage signal and public electrode 221 applied on touch-control sensing electrode 214
Potential difference between pressure is zero, as shown in Figure 7.
Incorporated by reference to Fig. 5 and Fig. 7, in display time period T1, due to the d. c. voltage signal applied on touch-control sensing electrode 214
With on public electrode 221 apply direct current common electric voltage between potential difference it is smaller (such as less than 1V) so that first substrate 21
Bias voltage between the public electrode 221 of touch-control sensing electrode 214 and second substrate 22 is smaller, liquid crystal molecule in liquid crystal layer 23
Angle of inclination hardly change, be maintained as the attitude that lies low, display when by positioned at same substrate (second substrate
22) the face internal electric field formed between the pixel electrode 222 and public electrode 221 on drives liquid crystal molecule flat with substrate 21,22
Rotation in capable plane, liquid crystal molecule realizes wide viewing angle pattern under stronger face internal electric field effect.
Please join Fig. 8, be another driver' s timing schematic diagram of the liquid crystal display device in wide viewing angle, in order to realize wide viewing angle
It has been shown that, in display time period T1, it is less that the touch-control sensing electrode 214 in touch-control sensing electrode layer 213 can also apply amplitude
First ac voltage signal, as long as first ac voltage signal and the direct current common electric voltage (DC being applied on public electrode 221
Vcom the potential difference between) is less than the first preset value (such as 1V), and first ac voltage signal for example can be square wave, sine
Centered on ripple, triangular wave etc. (in figure by taking sine wave as an example), and the direct current common electric voltage applied on public electrode 221 up and down
Fluctuation.Because the first ac voltage signal applied on touch-control sensing electrode 214 is public with the direct current of applying on public electrode 221
Potential difference between voltage is smaller (such as less than 1V) so that the touch-control sensing electrode 214 of first substrate 21 and second substrate 22
Bias voltage between public electrode 221 is smaller, and the angle of inclination of liquid crystal molecule hardly changes in liquid crystal layer 23, still protects
It is the attitude that lies low to hold, therefore can realize that wide viewing angle shows.
Fig. 9 is schematic cross-section of the liquid crystal display device in narrow viewing angle in Fig. 5, and Figure 10 is liquid crystal display device in Fig. 9
A kind of driver' s timing schematic diagram in narrow viewing angle, incorporated by reference to Fig. 9 and Figure 10, in display time period T1, when touch-control sensing electrode
Touch-control sensing electrode 214 in layer 213 apply larger the second ac voltage signal of amplitude and second ac voltage signal with
When the potential difference being applied between the direct current common electric voltage on public electrode 221 (DC Vcom) is more than the second preset value (such as 2V),
Liquid crystal display device is in second field-of-view mode (being narrow viewing angle pattern in the present embodiment).
Please join Fig. 9 and Figure 10, in display time period T1, due to the second alternating voltage applied on touch-control sensing electrode 214
Potential difference between the direct current common electric voltage applied on signal and public electrode 221 is larger (such as larger than 2V) so that first substrate
Bias voltage between 21 touch-control sensing electrode 214 and the public electrode 221 of second substrate 22 is larger, therefore can be in two bases
Stronger vertical electric field is formed between plate 21,22 (as shown in arrow E in Fig. 9).Because positivity liquid crystal molecule is under electric field action
To be rotated along the direction parallel to electric field line, therefore positivity liquid crystal molecule will deflect under vertical electric field effect, make
Between liquid crystal molecule and substrate 21,22 angle of inclination increase and tilts, liquid crystal molecule from lie low posture changing for inclination appearance
State so that display panel 20 occurs wide-angle observation light leak in dark-state, and makes display panel 20 in big view directions contrast
Reduce, finally realize that narrow viewing angle shows.
In the present embodiment when narrow viewing angle pattern is switched to, the current potential between touch-control sensing electrode 214 and public electrode 221
Difference larger (such as larger than 2V), is applied to the voltage signal on touch-control sensing electrode 214 for ac voltage signal, can make first substrate
The vertical electric field direction go produced between 21 and second substrate 22, it is to avoid vertical electric field direction is always same direction,
There are polarization phenomena in the liquid crystal molecule avoided in liquid crystal layer 23.
Under narrow viewing angle pattern, being applied to the second ac voltage signal on touch-control sensing electrode 214 can be with for the present embodiment
It is square wave, sine wave, triangular wave etc. (in figure by taking triangular wave as an example), and the direct current common electrical applied on public electrode 221
Fluctuated up and down centered on pressure (DC Vcom).In the present embodiment, the waveform of second ac voltage signal be preferably with voltage to
The triangular wave of upper mutation, as shown in Figure 10, using the second ac voltage signal of the triangular waveform, the stage is mutated in voltage upwards
Outside, voltage change is more slow, and the voltage coupling influence to pixel electrode is small, make display panel 20 under narrow viewing angle have compared with
Good display effect.
As shown in Figure 10, in the present embodiment under narrow viewing angle pattern, touch-control sensing electrode is applied to by further adjustment
The driver' s timing of the second ac voltage signal on 214, can improve in the regionality formed near liquid crystal display device lower end
The problem of banding display uneven (band mura).Specifically, in display time period T1, to touching in touch-control sensing electrode layer 213
When control induction electrode 214 applies the second ac voltage signal, display panel 20 is divided into set gradually many along scanning direction
Individual viewing area P1~Pn, applies the second alternating voltage and believes respectively to corresponding touch-control sensing electrode 214 in each viewing area
Number, and each viewing area is when scanning is started, the second friendship applied to corresponding touch-control sensing electrode 214 in the viewing area
Stream voltage signal is in voltage max.
In Fig. 10 as a example by display panel 20 to be divided into four viewing area P1~P4 along scanning direction, it is assumed that four
Time needed for viewing area P1~each self-scannings of P4 is respectively t1, t2, t3, t4, when first viewing area P1 is starting to sweep
When retouching (i.e. the initial sweep moment of a frame picture), apply to corresponding touch-control sensing electrode 214 in first viewing area P1
The second ac voltage signal be in voltage max；When second viewing area P2 start scanning when (correspond to t1 when
Carve), the second ac voltage signal applied to corresponding touch-control sensing electrode 214 in second viewing area P2 is in voltage most
Big value；When the 3rd viewing area P3 (corresponds to the t1+t2 moment) when scanning is started, to correspondence in the 3rd viewing area P3
Touch-control sensing electrode 214 apply the second ac voltage signal be in voltage max；When the 4th viewing area P4 is being opened
Begin (to correspond to the t1+t2+t3 moment) during scanning, apply to corresponding touch-control sensing electrode 214 in the 4th viewing area P4
Second ac voltage signal is in voltage max.
That is, the present embodiment is under narrow viewing angle pattern, although to corresponding touch-control sensing electricity in each viewing area
The voltage signal that pole 214 applies is second ac voltage signal, but corresponding touch-control in each viewing area P1~Pn
The second ac voltage signal that induction electrode 214 applies is not synchronous, but has certain phase difference each other.
Display panel 20 is unrestricted along the quantity that scanning direction is divided into viewing area, can as needed adjust display
The viewing area quantity that panel 20 is divided along scanning direction.Specifically, each display in the plurality of viewing area P1~Pn
Region can correspond to a line or multirow touch-control sensing electrode 214.If the viewing area that display panel 20 is divided along scanning direction
Domain quantity is more, then the sweep time of each viewing area is shorter, and now the design to drive circuit also can be relative complex, therefore
Needs consider.
In the present embodiment, when in the second display time period T1 larger to amplitude is applied on touch-control sensing electrode 214 exchange
During voltage signal, liquid crystal display device can switch to narrow viewing angle and show, the voltage of the pixel electrode in each sub-pixel can be touched
The the second ac voltage signal coupling applied on control induction electrode 214, causes the voltage of pixel electrode to change after charging.
When the waveform of second ac voltage signal is the triangular wave being mutated upwards with voltage, the electricity of second ac voltage signal
The voltage coupling influence of sub-pixel is larger in pressure mutation stage counter plate.But, in the present embodiment, by by display panel 20
It is divided into the multiple viewing area P1~Pn for setting gradually along scanning direction, respectively to corresponding in each viewing area P1~Pn
Touch-control sensing electrode 214 applies the second ac voltage signal, and when each viewing area starts scanning, makes to be applied to this and show
Show that the second ac voltage signal in region on corresponding touch-control sensing electrode 214 is just at its voltage max, so
So that each viewing area is just in and the viewing area is swept when the voltage jump of second ac voltage signal is experienced
In retouching, therefore sub-pixel in the viewing area can be charged to correct driving voltage, make second ac voltage signal
Voltage jump is minimized to the influence that pixel electrode coupling is caused, so as to solve existing near liquid crystal display device lower end shape
Into the problem of regional banding display uneven (band mura).
As shown in Fig. 7, Fig. 8 and Figure 10, in the present embodiment, no matter under wide viewing angle pattern or under narrow viewing angle pattern,
In touch-control time period T2, the touch-control sensing electrode 214 in touch-control sensing electrode layer 213 applies touch control detection voltage signal with reality
The touch control detection of existing display panel 20, the touch control detection voltage signal is illustrated in figure with intensive square wave.In touch-control time period T2, have
During human contact's touch-screen, human body electric field will be acted on inductance capacitance, the capacitance of inductance capacitance is changed, and then
Change the voltage/current signals that touch-control sensing electrode 214 is coupled out, according to the change of voltage/current signals, it is possible to it is determined that touching
Point position.
In the present embodiment, it is assumed that when the frame frequency of display panel 20 is 60Hz, the refresh cycle of each frame picture is 1/60 second,
I.e. 16.67 milliseconds, wherein display time period T1 can account for 11.67 milliseconds, it can be touch-control time period T2 to be left 5 milliseconds, but not
It is limited to this.Second ac voltage signal is periodic ac voltage signal, in the present embodiment, the week of the second ac voltage signal
Phase can be identical with display time period T1, as 11.67 milliseconds.
Therefore, the display panel 20 of the present embodiment takes the mode of time-sharing multiplex using touch-control sensing electrode 214, makes image
Display with touch control detection alternately, realizes view angle switch control and is combined with embedded touch.Wherein, by aobvious in image
Show that stage (showing time period T1) control is applied to the voltage signal of touch-control sensing electrode 214, you can realize display panel 20
View angle switch control between wide viewing angle pattern and narrow viewing angle pattern, facilitates liquid crystal display device in open or secret difference field
Use under closing, and without still further setting viewing angle control electrode in first substrate 21, processing procedure, reduces cost can be simplified and subtracted
Few module thickness.
Further, can also be by the way that display panel 20 to be divided into the multiple viewing area P1 for setting gradually along scanning direction
~Pn, applies the second ac voltage signal to corresponding touch-control sensing electrode 214 in each viewing area respectively, when each display
When region starts scanning, make to be applied to the second ac voltage signal on corresponding touch-control sensing electrode 214 in the viewing area
Just it is at its voltage max, reaches improvement existing uneven in the forming region banding display of liquid crystal display device lower end
The problem of (band mura).
[second embodiment]
Figure 11 is schematic cross-section of the liquid crystal display device in narrow viewing angle in second embodiment of the invention, and Figure 12 is Figure 11
Schematic cross-section of the middle liquid crystal display device in wide viewing angle, please join Figure 11 and Figure 12, the present embodiment and above-mentioned first embodiment
Differ primarily in that, liquid crystal layer 23 in the present embodiment uses negative liquid crystal molecule.With technological progress, the property of negative liquid crystal
Can be significantly improved, using also extensive all the more.Such as Figure 11, in original state, (i.e. display panel 20 does not apply any voltage
Situation) under, the negative liquid crystal molecule in liquid crystal layer 23 has initial tilt angle, i.e. negative liquid crystal molecule relative to substrate 21,22
In original state relative to substrate 21,22 inclined attitudes.
Please join Figure 11, and combine Fig. 7 and Fig. 8, in display time period T1, when the touch-control sense in touch-control sensing electrode layer 213
Electrode 214 is answered to apply d. c. voltage signal or the first ac voltage signal, and the d. c. voltage signal or first alternating voltage
Potential difference between signal and the direct current common electric voltage (DC Vcom) being applied on public electrode 221 is less than the first preset value (such as
When 1V), because the bias voltage between touch-control sensing electrode 214 and public electrode 221 is smaller, liquid crystal molecule in liquid crystal layer 23
Angle of inclination hardly changes, and is maintained as lateral attitude so that display panel 20 occurs wide-angle observation in dark-state
Light leak, and display panel 20 is reduced in big view directions contrast, so that liquid crystal display device is in the first field-of-view mode
(being narrow viewing angle pattern in the present embodiment).
Please join Figure 12, and combine Figure 10, in display time period T1, when the touch-control sensing electricity in touch-control sensing electrode layer 213
Pole 214 applies the second ac voltage signal, and second ac voltage signal is public with the direct current being applied on public electrode 221
When potential difference between voltage (DC Vcom) is more than the second preset value (such as 2V), due to touch-control sensing electrode 214 and public electrode
Bias voltage between 221 is larger, so as to stronger vertical electric field (arrow in such as Figure 12 can be formed between two substrates 21,22
Shown in head E).Because negative liquid crystal molecule will be deflected under electric field action along perpendicular to the direction of electric field line, therefore negativity liquid
Brilliant molecule deflects under vertical electric field effect so that the angle of inclination between liquid crystal molecule and substrate 21,22 reduces.When
The inclination angle of liquid crystal molecule reduce to it is almost parallel with substrate 21,22 lie low attitude when, display panel 20 occurs in dark-state
Wide-angle light leakage phenomena can be reduced accordingly, and display panel 20 is improved in big view directions contrast, and visual angle increases therewith, from
And liquid crystal display device is in second field-of-view mode (being wide viewing angle pattern in the present embodiment).
Other structures on the present embodiment, may refer to above-mentioned first embodiment, will not be repeated here.
[3rd embodiment]
The present invention also provides a kind of driving method of liquid crystal display device, for the liquid crystal display changeable to above-mentioned visual angle
Device is driven, and the driving method includes：
Apply direct current common electric voltage (i.e. DC Vcom) to public electrode 221；
When needing the liquid crystal display device to switch to the first field-of-view mode, in display time period T1, to touch-control sensing
Touch-control sensing electrode 214 in electrode layer 213 applies d. c. voltage signal or the first ac voltage signal, the wherein DC voltage
Potential difference between signal or first ac voltage signal and the direct current common electric voltage (DC Vcom) is less than the first preset value；
And in touch-control time period T2, apply touch control detection voltage to the touch-control sensing electrode 214 in touch-control sensing electrode layer 213 and believe
Number；
When needing the liquid crystal display device to switch to second field-of-view mode, in display time period T1, to touch-control sensing
Touch-control sensing electrode 214 in electrode layer 213 applies the second ac voltage signal, and wherein second ac voltage signal is straight with this
Potential difference between stream common electric voltage (DC Vcom) is more than the second preset value；And in touch-control time period T2, to touch-control sensing electricity
Touch-control sensing electrode 214 in pole layer 213 applies touch control detection voltage signal.
Preferably, under the first field-of-view mode, the d. c. voltage signal or first ac voltage signal are straight with this
Potential difference between stream common electric voltage is less than 1V；Under second field-of-view mode, second ac voltage signal and the direct current
Potential difference between common electric voltage is more than 2V.
Further, when liquid crystal layer 23 is using positivity liquid crystal molecule, the first field-of-view mode is wide viewing angle pattern, should
Second field-of-view mode is narrow viewing angle pattern；When liquid crystal layer 23 is using negative liquid crystal molecule, the first field-of-view mode is narrow
Field-of-view mode, second field-of-view mode is wide viewing angle pattern.
Further, in display time period T1, the is applied to the touch-control sensing electrode 214 in touch-control sensing electrode layer 213
During two ac voltage signals, specifically include：Display panel 20 is divided into the multiple viewing areas for setting gradually along scanning direction
P1~Pn, second ac voltage signal, and each are applied to corresponding touch-control sensing electrode 214 in each viewing area respectively
When scanning is started, the second alternating voltage applied to corresponding touch-control sensing electrode 214 in the viewing area is believed for viewing area
Number it is in voltage max.
Further, each viewing area correspondence a line or multirow touch-control sensing electricity in the plurality of viewing area P1~Pn
Pole 214.
Further, the waveform of second ac voltage signal is the triangular wave being mutated upwards with voltage.
Further, as shown in Figure 13 a and Figure 13 b, the liquid crystal display device is provided with view angle switch button 50, for for
Family sends view angle switch signal to the liquid crystal display device.
View angle switch button 50 can be physical button (as depicted in fig. 13 a), and now view angle switch button 50 can be protruded
Be arranged on the liquid crystal display device, in order to user by touch by etc. mode to the liquid crystal display device send view angle switch believe
Number；View angle switch button 50 can also realize view angle switch function (such as Figure 13 b for software control or application program (APP)
It is shown that width visual angle is set by touch-control slider bar).
By taking the liquid crystal display device in above-mentioned first embodiment shown in Fig. 5 to Figure 10 as an example, under normal circumstances, touch-control drives
Dynamic chip 30 applies the d. c. voltage signal or the first alternating current compared with small magnitude to touch-control sensing electrode 214 in display time period T1
Pressure signal, the liquid crystal display device is under wide viewing angle pattern；When having peep-proof demand and need to switch to narrow viewing angle pattern, use
Family can send view angle switch signal by operating the view angle switch button 50, and after the view angle switch signal is received, touch-control drives
Dynamic chip 30 applies the second ac voltage signal of higher magnitude in display time period T1 to touch-control sensing electrode 214 so that the
Larger potential difference is produced between the public electrode 221 on touch-control sensing electrode 214 and second substrate 22 on one substrate 21, from
And stronger vertical electric field E is produced between first substrate 21 and second substrate 22, by vertical electric field E drive liquid crystal molecule from
The attitude that lies low deflects to lateral attitude, so as to realize that leniently field-of-view mode switches to narrow viewing angle pattern.Show when narrow viewing angle is not needed
When showing, user can be applied to touch-control sensing by operating the view angle switch button 50 again by the revocation of touch-control driving chip 30
The second ac voltage signal on electrode 214, be changed to touch-control sensing electrode 214 apply compared with small magnitude d. c. voltage signal or
First ac voltage signal, shows so as to return to wide viewing angle.Therefore, by setting view angle switch button 50, can make
The liquid crystal display device has stronger operating flexibility and convenience.
The driving method of the present embodiment belongs to same design, the driving side with the liquid crystal display device in above-described embodiment
More contents of method will not be repeated here referring also to the description on liquid crystal display device in above-described embodiment.
The above, is only presently preferred embodiments of the present invention, and any formal limitation is not 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 making a little change or modification using the technology contents of the disclosure above
It is the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to technical spirit pair of the invention
Any simple modification, equivalent variations and modification that above example is made, still fall within the range of technical solution of the present invention.
Claims (12)
1. a kind of changeable liquid crystal display device in visual angle, including display panel (20), the display panel (20) includes the first base
Second substrate (22) that plate (21) and the first substrate (21) are oppositely arranged and positioned at the first substrate (21) and the second substrate
(22) liquid crystal layer (23) between, it is characterised in that the first substrate (21) is being provided with tactile towards the side of the liquid crystal layer (23)
Control line layer (211) and touch-control sensing electrode layer (213), touch control line layer (211) include a plurality of touch control line (212), should
Touch-control sensing electrode layer (213) includes multiple touch-control sensing electrodes (214) for being arranged in array, and the second substrate (22) is in direction
The side of the liquid crystal layer (23) is provided with public electrode (221) and pixel electrode (222), and it is public that the public electrode (221) applies direct current
Common voltage；Each frame picture of the display panel (20) includes display time period (T1) and touch-control time period (T2), in the display
Time period (T1), the touch-control sensing electrode (214) in the touch-control sensing electrode layer (213) applies d. c. voltage signal or alternating current
Signal is pressed to realize width view angle switch；Touch-control sensing in the touch-control time period (T2), the touch-control sensing electrode layer (213)
Electrode (214) applies touch control detection voltage signal to realize touch control detection.
2. the changeable liquid crystal display device in visual angle according to claim 1, it is characterised in that in the display time period
(T1), when the touch-control sensing electrode (214) in the touch-control sensing electrode layer (213) applies d. c. voltage signal or the first alternating current
Potential difference of the pressure between signal, and the d. c. voltage signal or first ac voltage signal and the direct current common electric voltage is less than the
During one preset value, the liquid crystal display device is in the first field-of-view mode；In the display time period (T1), when touch-control sensing electricity
Touch-control sensing electrode (214) in pole layer (213) applies the second ac voltage signal, and second ac voltage signal is straight with this
When potential difference between stream common electric voltage is more than the second preset value, the liquid crystal display device is in second field-of-view mode.
3. the changeable liquid crystal display device in visual angle according to claim 2, it is characterised in that the liquid crystal layer (23) is used
Positivity liquid crystal molecule, the first field-of-view mode is wide viewing angle pattern, and second field-of-view mode is narrow viewing angle pattern.
4. the changeable liquid crystal display device in visual angle according to claim 2, it is characterised in that the liquid crystal layer (23) is used
Negative liquid crystal molecule, the first field-of-view mode is narrow viewing angle pattern, and second field-of-view mode is wide viewing angle pattern.
5. the changeable liquid crystal display device in visual angle according to claim 1, it is characterised in that touch control line layer
(211) insulating barrier (215), every touch-control in touch control line layer (211) are provided with and the touch-control sensing electrode layer (213) between
One end of circuit (212) passes through contact hole (216) and corresponding touch-control sensing electrode in the touch-control sensing electrode layer (213)
(214) electrically connect, every other end of touch control line (212) and touch-control driving chip (30) electricity in touch control line layer (211)
Connection.
6. the driving method of a kind of liquid crystal display device as described in any one of claim 1 to 5, it is characterised in that including：
Apply direct current common electric voltage to the public electrode (221)；
When needing the liquid crystal display device to switch to the first field-of-view mode, in the display time period (T1), to the touch-control sense
The touch-control sensing electrode (214) in electrode layer (213) is answered to apply d. c. voltage signal or the first ac voltage signal, wherein this is straight
Stream voltage signal or the potential difference between first ac voltage signal and the direct current common electric voltage are less than the first preset value；And
In the touch-control time period (T2), touch control detection electricity is applied to the touch-control sensing electrode (214) in the touch-control sensing electrode layer (213)
Pressure signal；
When needing the liquid crystal display device to switch to second field-of-view mode, in the display time period (T1), to the touch-control sense
The touch-control sensing electrode (214) in electrode layer (213) is answered to apply the second ac voltage signal, wherein second ac voltage signal
It is more than the second preset value with the potential difference between the direct current common electric voltage；And in the touch-control time period (T2), to the touch-control sense
The touch-control sensing electrode (214) in electrode layer (213) is answered to apply touch control detection voltage signal.
7. the driving method of liquid crystal display device according to claim 6, it is characterised in that in the first field-of-view mode
Under, the potential difference between the d. c. voltage signal or first ac voltage signal and the direct current common electric voltage is less than 1V；At this
Under second field-of-view mode, the potential difference between second ac voltage signal and the direct current common electric voltage is more than 2V.
8. the driving method of liquid crystal display device according to claim 6, it is characterised in that when the liquid crystal layer (23) is used
During positivity liquid crystal molecule, the first field-of-view mode is wide viewing angle pattern, and second field-of-view mode is narrow viewing angle pattern；When this
When liquid crystal layer (23) is using negative liquid crystal molecule, the first field-of-view mode is narrow viewing angle pattern, and second field-of-view mode is
Wide viewing angle pattern.
9. the driving method of liquid crystal display device according to claim 6, it is characterised in that in the display time period
(T1) when, applying the second ac voltage signal to the touch-control sensing electrode (214) in the touch-control sensing electrode layer (213), specifically
Including：The display panel (20) is divided into the multiple viewing areas (P1~Pn) for setting gradually along scanning direction, it is aobvious to each
Show that corresponding touch-control sensing electrode (214) applies second ac voltage signal respectively in region, and each viewing area is being opened
When beginning to scan, the second ac voltage signal applied to corresponding touch-control sensing electrode (214) in the viewing area is in voltage
Maximum.
10. the driving method of liquid crystal display device according to claim 9, it is characterised in that the plurality of viewing area (P1
~Pn) in each viewing area correspondence a line or multirow touch-control sensing electrode (214).
The driving method of 11. liquid crystal display devices according to claim 9, it is characterised in that second alternating voltage is believed
Number waveform be the triangular wave being mutated upwards with voltage.
The driving method of 12. liquid crystal display device according to any one of claim 6 to 11, it is characterised in that the liquid crystal
Display device is provided with view angle switch button (50), for sending view angle switch signal to the liquid crystal display device for user.
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| CN111679461B (en) * | 2020-06-05 | 2022-09-23 | 昆山龙腾光电股份有限公司 | Display device with switchable field of view and display method thereof |
| CN114556265A (en) * | 2020-09-25 | 2022-05-27 | 京东方科技集团股份有限公司 | Touch method, touch circuit and touch device |
| CN114556265B (en) * | 2020-09-25 | 2024-03-05 | 京东方科技集团股份有限公司 | Touch control method, touch control circuit and touch control device |
| CN112965628A (en) * | 2021-02-26 | 2021-06-15 | 维沃移动通信有限公司 | Electronic equipment and cover plate, control method and control device thereof |
| CN112965628B (en) * | 2021-02-26 | 2024-04-09 | 维沃移动通信有限公司 | Electronic equipment, cover plate thereof, control method and control device |
| CN114153087A (en) * | 2021-12-21 | 2022-03-08 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114153087B (en) * | 2021-12-21 | 2024-02-09 | 厦门天马微电子有限公司 | Display panel and display device |
| WO2023201799A1 (en) * | 2022-04-19 | 2023-10-26 | 武汉华星光电技术有限公司 | Display panel and display terminal |
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