CN110501850A - Array substrate and liquid crystal display device and driving method - Google Patents
Array substrate and liquid crystal display device and driving method Download PDFInfo
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- CN110501850A CN110501850A CN201910746291.1A CN201910746291A CN110501850A CN 110501850 A CN110501850 A CN 110501850A CN 201910746291 A CN201910746291 A CN 201910746291A CN 110501850 A CN110501850 A CN 110501850A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 91
- 239000000758 substrate Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000010409 thin film Substances 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 description 11
- 230000000007 visual effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 230000036544 posture Effects 0.000 description 4
- 208000004350 Strabismus Diseases 0.000 description 3
- 230000008859 change 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
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
A kind of array substrate and liquid crystal display device and driving method, wherein array substrate is equipped with the first signal wire, second signal line and multiple public electrode items, multiple public electrode item is spaced apart from each other arrangement on data line direction, each public electrode item extends along scanning line direction and corresponding one-row pixels unit, wherein n-th of public electrode item corresponds to the pixel unit of line n, and the pixel unit of line n is connect by thin film transistor (TFT) with nth scan line；Each public electrode item is connect by the first control switch with the first signal wire, and each public electrode item also passes through the second control switch and connect with second signal line；For the first control switch and the second control switch being connect with n-th of public electrode item, the control terminal of first control switch is connect with a scan line before being located at nth scan line, and the control terminal of the second control switch is connect with a scan line after nth scan line；Wherein n is the arbitrary integer more than or equal to 1.
Description
Technical field
The present invention relates to the technical fields of liquid crystal display, more particularly to a kind of array substrate and liquid crystal display device and drive
Dynamic method.
Background technique
Liquid crystal display device (liquid crystal dilay, LCD) has good, small in size, light-weight, the low driving of image quality
Voltage, low-power consumption, radiationless and relatively low manufacturing cost advantage, occupy an leading position in flat display field.
With being constantly progressive for LCD technology, the visible angle of display is widened via original 120 ° or so
160 ° or more, people are while visual experience is brought at the big visual angle of enjoyment, it is also desirable to effective protection trade secret and individual privacy,
To avoid screen message leaks and caused by business loss or embarrassment.Therefore other than wide viewing angle, it is also necessary to which display device can
To switch to narrow viewing angle.
The switching of current wide viewing angle and narrow viewing angle blocks function generally by shutter come what is realized, this is just needed
Additionally to prepare a Protective film outside display device, use very inconvenient.
Recently, industry also starts to propose using the viewing angle control electrode of the side colored filter substrate (CF) to liquid crystal molecule
Apply a vertical electric field, Lai Shixian width view angle switch.Please join Fig. 1 and Fig. 2, the liquid crystal display device include upper substrate 11,
Lower substrate 12 and the liquid crystal layer 13 between upper substrate 11 and lower substrate 12, upper substrate 11 are equipped with viewing angle control electrode 111, under
Substrate 12 is equipped with public electrode 121 and pixel electrode 122.
As shown in Figure 1, the viewing angle control electrode 111 of upper substrate 11 does not give voltage, liquid crystal display dress in wide viewing angle display
It sets and realizes that wide viewing angle is shown.
As shown in Fig. 2, the viewing angle control electrode 111 of upper substrate 11 gives the electricity of higher magnitude when needing narrow viewing angle to show
It presses, the liquid crystal molecule in liquid crystal layer 13 can tilt, liquid crystal display device because of vertical direction electric field E (as shown by arrows in figure)
It is final to realize that narrow viewing angle is shown because light leakage and contrast reduce.
Existing width view angle switch product is that width viewing angle control electrode is placed in the side CF, is applied on viewing angle control electrode
The alternating voltage of 120Hz is driven, to reduce the impedance of viewing angle control electrode and enhancing its electric conductivity, it is often necessary in the side CF
Increase the metal conductive strips etc. that contact with viewing angle control electrodes conduct, processing procedure complexity, yield is lower, and from the side of display panel
Alternating voltage is applied on viewing angle control electrode by silver paste points, AC signal is easy distortion when conducting, if the side CF can be used
Direct current signal, then can save related process reduces cost, improves yield.
Summary of the invention
The purpose of the present invention is to provide a kind of array substrates and liquid crystal display device and driving method, and width may be implemented
View angle switch, and the problems such as exception is shown as caused by conduction problem can be avoided the occurrence of.
The embodiment of the present invention provides a kind of array substrate, the array substrate be equipped with multi-strip scanning line, multiple data lines with
And intersected by the multi-strip scanning line and the multiple data lines mutually insulated and limit the multiple pixel units formed, in the array substrate
It is additionally provided with the first signal wire, second signal line and multiple public electrode items, which is used to apply first voltage signal,
For the second signal line for applying second voltage signal, multiple public electrode item is spaced apart from each other arrangement on data line direction,
Each public electrode item extends along scanning line direction and corresponding one-row pixels unit, wherein n-th of public electrode item corresponding n-th
The pixel unit of capable pixel unit, line n is connect by thin film transistor (TFT) with nth scan line；Each public electrode item is logical
It crosses the first control switch to connect with first signal wire, each public electrode item also passes through the second control switch and the second signal
Line connection；For the first control switch and the second control switch being connect with n-th of public electrode item, first control switch
Control terminal be located at nth scan line before a scan line connect, one of path terminal of first control switch and
N-th of public electrode item connection, another path terminal of first control switch are connect with first signal wire, second control
The control terminal of switch is connect with a scan line after nth scan line, and one of them of second control switch is logical
Terminal is connect with n-th of public electrode item, another path terminal of second control switch is connect with the second signal line；Wherein
N is the arbitrary integer more than or equal to 1.
Further, for the first control switch and the second control switch connecting with n-th of public electrode item, this first
The control terminal of control switch is connect with (n-1)th scan line is located at, and the control terminal of second control switch is swept with positioned at (n+1)th
Retouch line connection.
Further, for the first control switch and the second control switch connecting with n-th of public electrode item, this first
The control terminal of control switch is connect with the n-th -2 scan lines are located at, and the control terminal of second control switch is swept with positioned at the n-th+2
Retouch line connection.
Further, first signal wire, the second signal line, first control switch and the equal position of the second control switch
In the same side of the array substrate.
Further, first signal wire and first control switch are located at the side of the array substrate, the second signal
Line and second control switch are located at the opposite other side of the array substrate.
The embodiment of the present invention also provides a kind of liquid crystal display device, including array substrate, is oppositely arranged with the array substrate
Color membrane substrates and the liquid crystal layer between the array substrate and the color membrane substrates, the array substrate be above-mentioned array base
Plate, the color membrane substrates are equipped with top electrode.
The embodiment of the present invention also provides a kind of for driving the driving method of above-mentioned liquid crystal display device, the driving method
Include:
Under the first field-of-view mode, applies DC reference voltage to the top electrode, be applied on first signal wire
And the current potential of the DC reference voltage is identical or potential difference is less than 0.5V for the current potential of first voltage signal, is applied to the second signal
The current potential of second voltage signal on line is identical as the current potential of the DC reference voltage or potential difference is less than 0.5V；
Under second of field-of-view mode, applies DC reference voltage to the top electrode, be applied on first signal wire
And the current potential of the DC reference voltage is identical or potential difference is less than 0.5V for the current potential of first voltage signal, is applied to the second signal
Second voltage signal on line is the alternating voltage of the upper below-center offset centered on the DC reference voltage.
Further, under the first field-of-view mode, it is applied to the current potential of the first voltage signal on first signal wire
Identical as the current potential of the DC reference voltage, the current potential and the direct current for being applied to the second voltage signal on the second signal line are joined
The current potential for examining voltage is identical；Under second of field-of-view mode, it is applied to the current potential of the first voltage signal on first signal wire
It is identical as the current potential of the DC reference voltage, the alternating voltage on the second signal line is applied to relative to the DC reference voltage
Amplitude be more than or equal to 3V.
Further, under second of field-of-view mode, the common voltage being written on each public electrode item is in consecutive frame
Between polarity it is opposite.
Further, which uses positive liquid crystal molecules, which is wide viewing angle mode, this second
Kind field-of-view mode is narrow viewing angle mode；Or the liquid crystal layer uses negative liquid crystal molecule, which is narrow viewing angle
Mode, second of field-of-view mode are wide viewing angle mode.
Array substrate provided in an embodiment of the present invention and liquid crystal display device and driving method, by the way that width visual angle will be manipulated
The voltage of switching from the viewing angle control electrode of color membrane substrates side goes to the public electrode item of array substrate side to realize, each public
Electrode strip is connected to the first signal wire and second signal line by two control switches, by control be applied to the first signal wire and
Voltage signal on second signal line can make liquid crystal display device realize switching between wide viewing angle mode and narrow viewing angle mode
It has been shown that, and the top electrode of color membrane substrates side applies d. c. voltage signal always, the first voltage signal applied on the first signal wire
It can be fed by array substrate side with the second voltage signal applied on second signal line, be made to avoid the occurrence of by conduction problem
At display it is abnormal, while related process can be saved reduce cost, improve yield.
Detailed description of the invention
Fig. 1 is a kind of schematic cross-section of the existing liquid crystal display device under wide viewing angle.
Fig. 2 is schematic cross-section of the liquid crystal display device under narrow viewing angle in Fig. 1.
Fig. 3 is the electrical block diagram of liquid crystal display device in first embodiment of the invention.
Fig. 4 is liquid crystal display device in Fig. 3 along IV-IV line and the schematic cross-section in wide viewing angle.
Fig. 5 is schematic cross-section of the liquid crystal display device in narrow viewing angle in Fig. 3.
Fig. 6 is drive waveforms schematic diagram of the liquid crystal display device in narrow viewing angle in Fig. 3.
Fig. 7 is the electrical block diagram of liquid crystal display device in second embodiment of the invention.
Fig. 8 is the electrical block diagram of liquid crystal display device in third embodiment of the invention.
Fig. 9 is drive waveforms schematic diagram of the liquid crystal display device in narrow viewing angle in Fig. 8.
Figure 10 is schematic cross-section of the liquid crystal display device in narrow viewing angle in fourth embodiment of the invention.
Figure 11 is schematic cross-section of the liquid crystal display device in wide viewing angle in Figure 10.
Figure 12 a and Figure 12 b is the floor map of liquid crystal display device in the embodiment of the present invention.
Specific embodiment
It is of the invention to reach the technical approach and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Accompanying drawings and embodiments, to a specific embodiment of the invention, structure, feature and its effect, detailed description is as follows.
First embodiment
It please join Fig. 3 to Fig. 4, the liquid crystal display device that first embodiment of the invention provides includes display panel 50, the display
Panel 50 is including array substrate 20, the color membrane substrates 30 being oppositely arranged with array substrate 20 and is located at array substrate 20 and color film base
Liquid crystal layer 40 between plate 30.
Array substrate 20 is equipped with multi-strip scanning line (only illustrating Gn-1, Gn, Gn+1, Gn+2, Gn+3 in figure) and a plurality of number
According to line (only illustrating S1, S2, S3, S4, S5, S6 in figure), which intersects restriction with the multiple data lines mutually insulated
Form the multiple pixel units being arranged in array.
It is additionally provided with multiple public electrode items 24 in array substrate 20, only schematically depicts four public electrode items in figure
24.Multiple public electrode item 24 is spaced apart from each other arrangement on data line direction, and each public electrode item 24 is along scan line side
To extending and corresponding to one-row pixels unit, wherein the pixel unit of the corresponding line n of n-th of public electrode item 24, the pixel of line n
Unit is connect by thin film transistor (TFT) 26 with nth scan line.Wherein, n is the arbitrary integer more than or equal to 1.
The first signal wire 21, second signal line 22 and multiple control switches T1, T2 are additionally provided in array substrate 20.First letter
Number line 21 is for applying first voltage signal V1, and second signal line 22 is for applying second voltage signal V2.Each public electrode
Item 24 is connect by a first control switch T1 with the first signal wire 21, and each public electrode item 24 also passes through one second control
System switch T2 is connect with second signal line 22.Each control switch T1, T2 includes control terminal, the first path terminal and alternate path
End.Wherein, for the first control switch T1 being connect with n-th of public electrode item 24 and the second control switch T2, the first control
The control terminal of switch T1 be located at nth scan line before a scan line connect, the first control switch T1 one of them
Path terminal is connect with n-th of public electrode item 24, and another path terminal of the first control switch T1 is connect with the first signal wire 21,
The control terminal of second control switch T2 is connect with a scan line after nth scan line, the second control switch T2's
One of path terminal is connect with n-th of public electrode item 24, another path terminal and second signal of the second control switch T2
Line 22 connects.
Specifically, in the present embodiment, for the first control switch T1 and second being connect with n-th of public electrode item 24
Control switch T2, the control terminal of the first control switch T1 are connect, second with (n-1)th scan line (i.e. upper level scan line) is located at
The control terminal of control switch T2 is connect with (n+1)th scan line (i.e. next stage scan line) is located at.
First signal wire 21, second signal line 22, the first control switch T1 and the second control switch T2 can be arranged at
The non-display area of display panel 50.In the present embodiment, the first signal wire 21, second signal line 22, the first control switch T1 and
Second control switch T2 is arranged at the same side of display panel 50.
Specifically, each control switch T1, T2 can be thin film transistor (TFT), which is grid, first path terminal
It is source electrode with one of the alternate path end, it is another for drain electrode.The invention is not limited thereto, and each control switch T1, T2 is also
It can be other switch elements, such as field effect transistor.
It please join Fig. 3, be equipped with pixel electrode 23 and thin film transistor (TFT) 26 in each pixel unit, pixel electrode 23 passes through film
Transistor 26 is connected with corresponding scan line and data line.Specifically, the grid of thin film transistor (TFT) 26 is electrically connected corresponding scanning
Line, the source electrode of thin film transistor (TFT) 26 are electrically connected corresponding data line, and the drain electrode of thin film transistor (TFT) 26 is electrically connected corresponding pixel electricity
Pole 23.In the present embodiment, the pixel electrode 23 in each pixel unit in every a line is connected by thin film transistor (TFT) 26 respectively
It is connected in same scan line.
As shown in figure 4, pixel electrode 23 and public electrode item 24 can be located at different layers and the two in array substrate 20
Between be folded with insulating layer 29, pixel electrode 23 can be located at 24 top of public electrode item, and the liquid crystal display device be made to form edge
The framework of electric field switch type (Fringe Field Switching, FFS).The liquid crystal display device is public in normal display
Generate fringe field between electrode strip 24 and pixel electrode 23, make liquid crystal molecule the plane internal rotation substantially parallel with substrate with
Obtain wider visual angle.
Color membrane substrates 30 are equipped with color blocking layer 31, black matrix (BM) 32 and top electrode 33.Color blocking layer 31 is, for example, R, G, B color
Resistance.Top electrode 33 can be entire plane electrode or patterned electrode.Color blocking layer 31 and black matrix 32 are arranged in color film
Towards on the surface of 40 side of liquid crystal layer, other film layer structures are arranged in color blocking layer 31 and black matrix 32 substrate 30.Color film base
At least an insulating layer or flatness layer are also provided on plate 30.In the present embodiment, it is additionally provided with flatness layer 35 on color membrane substrates 30, puts down
Smooth layer 35 covers color blocking layer 32 and black matrix 31, top electrode 33 are formed on flatness layer 35, but not limited to this.
In the present embodiment, the liquid crystal molecule in liquid crystal layer 40 is positive liquid crystal molecules, and it is fast that positive liquid crystal molecules have response
The advantages of.Such as Fig. 4, under original state (i.e. liquid crystal display device do not apply any voltage situation), in liquid crystal layer 40 just
Property liquid crystal molecule be presented the lying posture substantially parallel with substrate 20,30, i.e., the long axis direction Yu substrate 20 of positive liquid crystal molecules,
30 surface is substantially parallel.But in practical applications, can have between the positive liquid crystal molecules in liquid crystal layer 40 and substrate 20,30
There is lesser initial pre-tilt angle, the range of the initial pre-tilt angle may be less than or be equal to 10 degree, it may be assumed that 0 θ≤10 ° ° ≦.
The present embodiment is applied to the top electrode 33 of color membrane substrates 30 and the first signal wire 21 of array substrate 20 by control
And the voltage signal on second signal line 22, the liquid crystal display device can be made real between wide viewing angle mode and narrow viewing angle mode
Now switching display.
Wide viewing angle mode: please join Fig. 3 and Fig. 4, apply DC reference voltage Vref to the top electrode 33 of color membrane substrates 30, and
Current potential and the current potential of DC reference voltage Vref for being applied to the first voltage signal V1 on the first signal wire 21 are identical or electric
Potential difference is less than 0.5V, is applied to the current potential of the second voltage signal V2 on second signal line 22 with DC reference voltage Vref's
Current potential is identical or potential difference is less than 0.5V, and the voltage difference between each public electrode item 24 and top electrode 33 is smaller (such as small at this time
In 0.5V), the tilt angle of liquid crystal molecule hardly happens variation in liquid crystal layer 40, is maintained as lying posture, therefore the liquid
Crystal device realizes that normal wide viewing angle is shown.
Under wide viewing angle mode, it is preferable that be applied to the current potential of the first voltage signal V1 on the first signal wire 21 and be somebody's turn to do
The current potential of DC reference voltage Vref is identical, is applied to the current potential and the direct current of the second voltage signal V2 on second signal line 22
The current potential of reference voltage Vref is identical (i.e. V1=V2=Vref), makes the voltage between each public electrode item 24 and top electrode 33
Difference is zero, to realize preferable wide viewing angle effect.But not limited to this, under wide viewing angle mode, apply on the first signal wire 21
First voltage signal V1 current potential and second signal line 22 on the current potential of second voltage signal V2 that applies can also be with this
The current potential of DC reference voltage Vref is not identical, such as being less than 0.5V with the potential difference of DC reference voltage Vref can also be with,
As long as the voltage difference between each public electrode item 24 and top electrode 33 is made to be less than preset value (such as less than 0.5V).
Narrow viewing angle mode: please join Fig. 3 and Fig. 5, apply DC reference voltage Vref to the top electrode 33 of color membrane substrates 30, apply
Be added in the first voltage signal V1 on the first signal wire 21 current potential is identical as the current potential of DC reference voltage Vref or current potential
Difference be less than 0.5V, be applied to the second voltage signal V2 on second signal line 22 be centered on DC reference voltage Vref on
The alternating voltage of below-center offset, the voltage difference between each public electrode item 24 and top electrode 33 is larger at this time (is such as larger than equal to
3V), stronger vertical electric field E can be being generated in liquid crystal cell between array substrate 20 and color membrane substrates 30 (such as arrow institute in Fig. 5
Show), since positive liquid crystal molecules will rotate under electric field action along the direction for being parallel to electric field line, positive liquid crystal molecules
It will deflect under vertical electric field E effect, the tilt angle between liquid crystal molecule and substrate 20,30 is made to increase and tilt,
Liquid crystal molecule will be transformed to lateral attitude from lying posture, so that liquid crystal display device wide-angle observation light leakage is occurred, in strabismus side
It is reduced to contrast and visual angle narrows, which finally realizes that narrow viewing angle is shown.
Under narrow viewing angle mode, it is preferable that be applied to the current potential of the first voltage signal V1 on the first signal wire 21 and be somebody's turn to do
The current potential of DC reference voltage Vref is identical (i.e. V1=Vref).But not limited to this, under narrow viewing angle mode, the first signal wire 21
The current potential of the first voltage signal V1 of upper application can be not identical as the current potential of DC reference voltage Vref, such as can also be with
The potential difference of DC reference voltage Vref is less than 0.5V.
Under narrow viewing angle mode, the second voltage signal V2 being applied on second signal line 22 is with the DC reference voltage
The alternating voltage of upper below-center offset centered on Vref, which can basis relative to the amplitude of DC reference voltage Vref
Required narrow viewing angle effect is selected, such as can choose more than or equal to 3V (i.e. | V2-Vref | >=3V), so that each
Voltage difference between public electrode item 24 and top electrode 33 is more than or equal to 3V, and preferable narrow viewing angle effect may be implemented.The exchange
The waveform of voltage is specifically as follows square wave, trapezoidal square wave, sine wave, triangular wave etc..
Fig. 6 is the drive waveforms schematic diagram in narrow viewing angle, please join Fig. 6, under narrow viewing angle mode, be applied to the first signal
The current potential of first voltage signal V1 on line 21 is identical as the current potential of DC reference voltage Vref or potential difference is less than 0.5V, applies
It is added in the exchange that the second voltage signal V2 on second signal line 22 is the upper below-center offset centered on DC reference voltage Vref
Voltage.Therefore for n-th of public electrode item 24, before the same level scan line, that is, Gn is opened, upper level scan line, that is, Gn-1
When opening, n-th of public electrode item 24 is written into first voltage signal V1, when the same level scan line, that is, Gn is opened, line n it is each
A pixel unit is filled with pixel voltage respectively, and before next stage scan line, that is, Gn+1 is opened, the same level scan line, that is, Gn is closed, and n-th
Pixel voltage in capable each pixel unit keeps and is in floating (floating) state, as next stage scan line, that is, Gn+1
When opening, n-th of public electrode item 24 is written into second voltage signal V2.Specifically, it is written on n-th of public electrode item 24
Common voltage waveform can join C1 in figure.
It please join Fig. 6, polarity of the common voltage being written on each public electrode item 24 between consecutive frame is on the contrary, exist
When nth frame, the common voltage that each public electrode item 24 is written into is positive polarity, in N+1 frame, each public electrode item 24
The common voltage being written into is negative polarity.
As shown in Figure 4 and Figure 5, which further includes driving circuit 60, from driving circuit 60 respectively to color film
The top electrode 33 of substrate 30 and the first signal wire 21 and second signal line 22 of array substrate 20 apply required voltage signal.For
Apply voltage signal to the top electrode 33 of color membrane substrates 30, conduction can be passed through in the periphery non-display area of display panel 50
Array substrate 20 is conducted to color membrane substrates 30 by glue 70, by the offer voltage signal of driving circuit 60 to array substrate 20, then by battle array
DC reference voltage Vref is applied to the top electrode 33 of color membrane substrates 30 by conducting resinl 70 by column substrate 20.
In the present embodiment, by the way that the voltage for manipulating width view angle switch is gone to from the viewing angle control electrode of color membrane substrates side
The public electrode item of array substrate side realizes, each public electrode item by two control switches be connected to the first signal wire and
Second signal line can be such that liquid crystal display fills by controlling the voltage signal being applied on the first signal wire and second signal line
It sets and realizes switching display between wide viewing angle mode and narrow viewing angle mode, and the top electrode of color membrane substrates side applies direct current always
Signal is pressed, the second voltage signal applied on the first voltage signal and second signal line applied on the first signal wire can be by battle array
Column substrate-side is fed, and exception is shown as caused by conduction problem to avoid the occurrence of, while can save related process to reduce cost,
Improve yield.
Second embodiment
It please join Fig. 7, liquid crystal display device provided in this embodiment and the difference of above-mentioned first embodiment are, in this implementation
In example, the first signal wire 21 and the first control switch T1 are located at the side of array substrate 20, and second signal line 22 and second control
Switch T2 is located at the opposite other side of array substrate 20.The other structures of the present embodiment may refer to above-mentioned first embodiment, In
This is repeated no more.
3rd embodiment
It please join Fig. 8, liquid crystal display device provided in this embodiment and the difference of above-mentioned first embodiment are, in this implementation
In example, for the first control switch T1 being connect with n-th of public electrode item 24 and the second control switch T2, the first control switch
The control terminal of T1 is connect, the control terminal of the second control switch T2 and position with the n-th -2 scan lines (i.e. upper two-stage scan line) are located at
It is connected in the n-th+2 scan lines (descending two-stage scan line).The other structures of the present embodiment may refer to above-mentioned first embodiment,
Details are not described herein.
Drive waveforms of the present embodiment under narrow viewing angle refer to Fig. 9, are written on n-th of public electrode item 24 public
Voltage waveform can join C1 in figure.
Fourth embodiment
It please join Figure 10 and Figure 11, liquid crystal display device provided in this embodiment and the difference of above-mentioned first embodiment are,
Liquid crystal layer 40 in the present embodiment uses negative liquid crystal molecule.With technological progress, the performance of negative liquid crystal is significantly improved,
Using also more extensive.In the present embodiment, as shown in Figure 10, in original state, (i.e. liquid crystal display device does not apply any voltage
Situation) under, negative liquid crystal molecule in liquid crystal layer 40 has biggish initial pre-tilt angle, i.e. negativity relative to substrate 20,30
Liquid crystal molecule is in original state relative to substrate 20,30 inclined postures.
Narrow viewing angle mode: please join Figure 10, apply DC reference voltage Vref to the top electrode 33 of color membrane substrates 30, and apply
The current potential of first voltage signal V1 on the first signal wire 21 is identical as the current potential of DC reference voltage Vref or potential difference
Less than 0.5V, it is applied to the current potential of the second voltage signal V2 on second signal line 22 and the current potential of DC reference voltage Vref
Identical or potential difference is less than 0.5V, and the voltage difference between each public electrode item 24 and top electrode 33 is smaller (such as less than at this time
0.5V), the tilt angle of liquid crystal molecule hardly happens variation in liquid crystal layer 40, is maintained as lateral attitude, makes liquid crystal display
There is wide-angle observation light leakage in device, reduces in strabismus Direction Contrast and visual angle narrows, the liquid crystal display device is realized at this time
Narrow viewing angle is shown.
Wide viewing angle mode: please join Figure 11, apply DC reference voltage Vref to the top electrode 33 of color membrane substrates 30, be applied to
The current potential of first voltage signal V1 on first signal wire 21 is identical as the current potential of DC reference voltage Vref or potential difference is small
In 0.5V, it is inclined up and down centered on DC reference voltage Vref for being applied to the second voltage signal V2 on second signal line 22
The alternating voltage set, the voltage difference between each public electrode item 24 and top electrode 33 is larger (such as larger than 2V) at this time, can be in liquid
Stronger vertical electric field E (as shown in arrow in Figure 11) is generated in brilliant box between array substrate 20 and color membrane substrates 30, due to
Negative liquid crystal molecule will deflect under electric field action along the direction perpendicular to electric field line, therefore negative liquid crystal molecule is vertical at this
It deflects under electric field E effect, reduces the tilt angle between liquid crystal molecule and substrate 20,30, which goes out
Existing wide-angle light leakage phenomena can be reduced accordingly, improve in strabismus Direction Contrast and visual angle increases, the liquid crystal display device is final
Realize that wide viewing angle is shown.
The other structures of the present embodiment are referring also to above-mentioned first embodiment, and details are not described herein.
Further, as depicted in figs. 12 a and 12b, which is additionally provided with view angle switch key 80, for cutting
Change the different perspectives mode of the liquid crystal display device.View angle switch key 80 can be mechanical key (such as Figure 12 a), or
Virtual key (such as Figure 12 b is set by software control or application program).It, can when user needs to switch width visual angle
View angle switch request is issued to liquid crystal display device by operating the view angle switch key 80, is finally applied by the control of driving circuit 60
The voltage signal being added in top electrode 33 and the first signal wire 21 and second signal line 22, thus realize the switching at width visual angle,
Allow user according to different peep-proof demands, unrestricted choice switches width visual angle, therefore the liquid crystal display dress of the embodiment of the present invention
Set provided with stronger operating flexibility and convenience integrate entertainment video and privacy secrecy Multifunctional liquid crystal show
Device.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of array substrate (20), which is equipped with multi-strip scanning line, multiple data lines and a plurality of by this
Scan line and the multiple data lines mutually insulated intersect the multiple pixel units for limiting and being formed, which is characterized in that the array substrate
(20) the first signal wire (21), second signal line (22) and multiple public electrode items (24), first signal wire are additionally provided on
(21) for applying first voltage signal (V1), the second signal line (22) is multiple for applying second voltage signal (V2)
Public electrode item (24) is spaced apart from each other arrangement on data line direction, and each public electrode item (24) extends along scanning line direction
And corresponding one-row pixels unit, wherein the pixel unit of the corresponding line n of n-th of public electrode item (24), the pixel unit of line n
It is connect by thin film transistor (TFT) (26) with nth scan line；Each public electrode item (24) by the first control switch (T1) with
First signal wire (21) connection, each public electrode item (24) also pass through the second control switch (T2) and the second signal line
(22) it connects；It, should for the first control switch (T1) and the second control switch (T2) being connect with n-th of public electrode item (24)
The control terminal of first control switch (T1) is connect with a scan line before being located at nth scan line, first control switch
(T1) one of path terminal is connect with n-th of public electrode item (24), another access of first control switch (T1)
End is connect with first signal wire (21), the control terminal of second control switch (T2) and one after nth scan line
The connection of scan line, one of path terminal of second control switch (T2) are connect with n-th of public electrode item (24), this
Another path terminal of two control switches (T2) is connect with the second signal line (22)；Wherein n is any whole more than or equal to 1
Number.
2. array substrate (20) according to claim 1, which is characterized in that connect for n-th of public electrode item (24)
The first control switch (T1) and the second control switch (T2) connect, the control terminal of first control switch (T1) be located at (n-1)th
The connection of scan line, the control terminal of second control switch (T2) are connect with positioned at (n+1)th scan line.
3. array substrate (20) according to claim 1, which is characterized in that connect for n-th of public electrode item (24)
The first control switch (T1) and the second control switch (T2) connect, the control terminal of first control switch (T1) be located at n-th -2
The connection of scan line, the control terminal of second control switch (T2) are connect with positioned at the n-th+2 scan lines.
4. array substrate (20) according to claim 1, which is characterized in that first signal wire (21), the second signal
Line (22), first control switch (T1) and second control switch (T2) are respectively positioned on the same side of the array substrate (20).
5. array substrate (20) according to claim 1, which is characterized in that first signal wire (21) and first control
Switch (T1) is located at the side of the array substrate (20), and the second signal line (22) and second control switch (T2) are located at the battle array
The opposite other side of column substrate (20).
6. a kind of liquid crystal display device, including array substrate (20), the color membrane substrates being oppositely arranged with the array substrate (20)
(30) and the liquid crystal layer (40) between the array substrate (20) and the color membrane substrates (30), which is characterized in that the array
Substrate (20) is array substrate described in any one of claim 1 to 5 (20), which is equipped with top electrode (33).
7. a kind of for driving the driving method of liquid crystal display device as claimed in claim 6, which is characterized in that the driving side
Method includes:
Under the first field-of-view mode, applies DC reference voltage (Vref) to the top electrode (33), be applied to first signal
The current potential of first voltage signal (V1) on line (21) is identical as the current potential of the DC reference voltage (Vref) or potential difference is less than
0.5V is applied to the current potential and the DC reference voltage (Vref) of the second voltage signal (V2) on the second signal line (22)
Current potential is identical or potential difference is less than 0.5V；
Under second of field-of-view mode, applies DC reference voltage (Vref) to the top electrode (33), be applied to first signal
The current potential of first voltage signal (V1) on line (21) is identical as the current potential of the DC reference voltage (Vref) or potential difference is less than
0.5V, being applied to the second voltage signal (V2) on the second signal line (22) is centered on the DC reference voltage (Vref)
The alternating voltage of upper below-center offset.
8. driving method according to claim 7, which is characterized in that under the first field-of-view mode, be applied to this first
The current potential of first voltage signal (V1) on signal wire (21) is identical as the current potential of the DC reference voltage (Vref), is applied to this
The current potential of second voltage signal (V2) on second signal line (22) is identical as the current potential of the DC reference voltage (Vref)；
Under two kinds of field-of-view modes, it is applied to the current potential and DC reference electricity of the first voltage signal (V1) on first signal wire (21)
It presses the current potential of (Vref) identical, is applied to the alternating voltage on the second signal line (22) relative to the DC reference voltage
(Vref) amplitude is more than or equal to 3V.
9. driving method according to claim 7, which is characterized in that under second of field-of-view mode, each public electrode
Polarity of the common voltage (C1) being written on item (24) between consecutive frame is opposite.
10. driving method according to claim 7, which is characterized in that the liquid crystal layer (40) uses positive liquid crystal molecules, should
The first field-of-view mode is wide viewing angle mode, which is narrow viewing angle mode；Or the liquid crystal layer (40) uses
Negative liquid crystal molecule, the first field-of-view mode are narrow viewing angle mode, which is wide viewing angle mode.
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| CN101211540A (en) * | 2006-12-29 | 2008-07-02 | Lg.菲利浦Lcd株式会社 | Programmable liquid crystal display device for controlling viewing angle and driving method thereof |
| US20090027609A1 (en) * | 2007-07-23 | 2009-01-29 | Kang-Woo Kim | Substrate for display panel and liquid crystal display panel with the same |
| CN107490884A (en) * | 2017-09-04 | 2017-12-19 | 昆山龙腾光电有限公司 | Selector, array base palte and liquid crystal display device and driving method |
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