CN106444104A - Liquid crystal display device capable of switching visual angle - Google Patents
Liquid crystal display device capable of switching visual angle Download PDFInfo
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- CN106444104A CN106444104A CN201610883584.0A CN201610883584A CN106444104A CN 106444104 A CN106444104 A CN 106444104A CN 201610883584 A CN201610883584 A CN 201610883584A CN 106444104 A CN106444104 A CN 106444104A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 164
- 230000000007 visual effect Effects 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 97
- 239000000725 suspension Substances 0.000 claims description 51
- 230000004888 barrier function Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 description 26
- 230000000694 effects Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 239000010409 thin film Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005685 electric field effect Effects 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 241000036318 Callitris preissii Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a liquid crystal display device capable of switching a visual angle. The liquid crystal display device comprises a display panel, wherein the display panel comprises a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer located between the first substrate and the second substrate; a visual angle control electrode and suspending electrodes are arranged on the first substrate in a mutual insulation manner; a public electrode and pixel electrodes are arranged on the second substrate in the mutual insulation manner; the pixel electrodes are arranged in each subpixel and comprise a plurality of spaced pixel electrode bars; the suspending electrodes are arranged in each subpixel and comprise a plurality of spaced suspending electrode bars; all the suspending electrodes and all the pixel electrodes are arranged in an up-and-down correspondence manner; the suspending electrodes are in suspending state; the visual angle control electrode is used for applying a voltage signal for controlling visual angle switching.
Description
Technical field
The present invention relates to the technical field of liquid crystal display, the switchable liquid crystal indicator in more particularly to a kind of visual angle.
Background technology
Liquid crystal indicator (liquid crystal display, LCD) has that image quality is good, small volume, lightweight, low drive
The relatively low advantage of galvanic electricity pressure, low-power consumption, radiationless Manufacturing cost, occupies an leading position in flat display field.
Liquid crystal indicator gradually develops towards wide viewing angle direction now, such as using in-plane-switching mode (IPS) or edge
The liquid crystal indicator of field switch pattern (FFS) all can realize wider visual angle.The design of wide viewing angle makes user from each
Individual direction all can be seen that complete and distortionless picture.However, today's society people increasingly focus on protecting the privacy of oneself, have
A lot of things simultaneously do not like to take out and share with people.In public, always wish oneself see the mobile phone or browse computer when
Waiting content is secrecy.Therefore, the display of single visual angle pattern can not meet the demand of user.Except wide viewing angle
Outside demand, it is also desirable to by display device switching or narrow viewing angle pattern can be adjusted under the occasion needing peep-proof.
In order to switch over to the wide viewing angle of liquid crystal indicator and narrow viewing angle, a kind of mode is had to be to utilize colored filter
The viewing angle control electrode of substrate (CF) side applies a vertical electric field to liquid crystal molecule, realizes narrow viewing angle pattern.Fig. 1 is existing
The structural representation in wide viewing angle for a kind of liquid crystal indicator in technology, Fig. 2 is for liquid crystal indicator in Fig. 1 in narrow viewing angle
Structural representation, Fig. 1 and Fig. 2 please be join, liquid crystal indicator include first substrate 11, second substrate 12 and be located at first substrate
Liquid crystal layer 13 between 11 and second substrate 12, first substrate 11 is provided with viewing angle control electrode 111.As shown in figure 1, regarding in width
During the display of angle, the viewing angle control electrode 111 on first substrate 11 does not give voltage or the voltage to very little, viewing angle control electrode 111
Potential difference very little and the public electrode (not shown) on second substrate 12 between or be zero, liquid crystal indicator realizes wide viewing angle
Display.As shown in Fig. 2 when needing narrow viewing angle display, the viewing angle control electrode 111 on first substrate 11 gives voltage, visual angle is controlled
There is larger potential difference, the liquid crystal molecule in liquid crystal layer 13 exists between public electrode on electrode 111 processed and second substrate 12
Tilt because of the electric field (as shown in figure arrow E) of vertical direction while horizontal rotation, liquid crystal indicator is because light leak
And contrast reduces, finally realize narrow viewing angle.
But, this mode under wide viewing angle pattern, because viewing angle control electrode does not give voltage or current potential very little, wide viewing angle
Larger potential difference, pixel can be produced between the pixel electrode bar of pixel electrode (not shown) and viewing angle control electrode during display
There is stronger vertical electric field so that the liquid crystal corresponding with each pixel electrode bar divides between electrode strip and viewing angle control electrode
Son produces wide-angle deflection, affects contrast under wide viewing angle shows for the liquid crystal indicator and penetrance.
Content of the invention
It is an object of the invention to provide a kind of switchable liquid crystal indicator in visual angle, with achievable view angle switch
It is lifted at the contrast under wide viewing angle shows and penetrance simultaneously.
The embodiment of the present invention provides a kind of visual angle switchable liquid crystal indicator, including display floater, this display floater
The second substrate that is oppositely arranged including first substrate and this first substrate and being located between this first substrate and this second substrate
Liquid crystal layer, this first substrate is provided with viewing angle control electrode and suspension electrode, and this viewing angle control electrode and this suspension electrode are mutual
Insulation set, this second substrate is provided with public electrode and pixel electrode, and this public electrode and this pixel electrode mutually insulated set
Put, this pixel electrode is arranged in each sub-pixel and includes spaced multiple pixel electrode bars, and this suspension electrode is arranged
In each sub-pixel and include spaced multiple suspension electrode bars, each suspension electrode bar respectively with each pixel electrode bar on
Under be correspondingly arranged, this suspension electrode is in suspended state, this viewing angle control electrode be used for apply control view angle switch voltage letter
Number.
Further, this liquid crystal indicator also includes drive circuit, for applying for controlling to this viewing angle control electrode
Voltage signal needed for view angle switch processed and export direct current public voltage signal to this public electrode.
Further, this liquid crystal indicator also includes viewing angle control button, regards for sending to this liquid crystal indicator
Angle handover request.
Further, this viewing angle control button is physical button or virtual key.
Further, the suspension electrode between adjacent subpixels is mutually not attached to, for being provided separately.
Further, this first substrate is additionally provided with the first insulating barrier, between this viewing angle control electrode and this suspension electrode
Separated by this first insulating barrier.
Further, this second substrate is additionally provided with the second insulating barrier, by this between this public electrode and this pixel electrode
Second insulating barrier separates.
Further, the plurality of suspension electrode bar in each sub-pixel is each independently of the others setting or in end
Link together, between adjacent suspension electrode bar, form slit.
Further, this liquid crystal in the layer liquid crystal molecule is positivity liquid crystal molecule, and in an initial condition, this positivity liquid crystal divides
Son is in the attitude and this display floater has wide viewing angle of lying low；When to this viewing angle control electrode applied voltage signal, this positivity
Liquid crystal molecule from the attitude that lies low deflect to lateral attitude and this display floater leniently view angle switch to narrow viewing angle.
Further, this liquid crystal in the layer liquid crystal molecule is negative liquid crystal molecule, and in an initial condition, this negative liquid crystal divides
Son is in lateral attitude and this display floater has narrow viewing angle；When to this viewing angle control electrode applied voltage signal, this negativity
Liquid crystal molecule deflects to, from lateral attitude, the attitude and this display floater switches to wide viewing angle from narrow viewing angle of lying low.
The switchable liquid crystal indicator in visual angle provided in an embodiment of the present invention, first substrate sets in each sub-pixel
There is suspension electrode, the suspension electrode in each sub-pixel is corresponding with pixel electrode, each suspension electrode bar and each pixel electrode bar
It is correspondingly arranged up and down.The presence of suspension electrode can reduce the tilting degree in vertical substrate direction for the liquid crystal molecule to a certain extent,
Penetrance and the contrast of display floater can be improved under wide viewing angle pattern, can reduce under narrow viewing angle pattern and be applied to visual angle control
Voltage magnitude on electrode processed and maintaining and this comparing embodiment identical narrow viewing angle peep-proof angle, has and regards under wide viewing angle
Angle is wider, the narrower display effect of narrow viewing angle downwards angle of visibility.
Brief description
Fig. 1 is the structural representation in wide viewing angle for a kind of liquid crystal indicator in prior art.
Fig. 2 is the structural representation in narrow viewing angle for the liquid crystal indicator in Fig. 1.
Fig. 3 is the structural representation in wide viewing angle for the liquid crystal indicator in first embodiment of the invention.
Fig. 4 is the structural representation in narrow viewing angle for the liquid crystal indicator in Fig. 3.
Fig. 5 is the electrical block diagram of liquid crystal indicator in Fig. 3.
Fig. 6 is the structural representation of the pixel electrode of liquid crystal indicator in Fig. 3.
Fig. 7 a to Fig. 7 b is the structural representation of the suspension electrode in different instances of the present invention.
Fig. 8 a to Fig. 8 b is the planar structure schematic diagram of liquid crystal indicator in Fig. 3.
Fig. 9 a to Fig. 9 b is the display effect schematic diagram of the embodiment of the present invention and a comparing embodiment.
Figure 10 a to Figure 10 b is the contrast schematic diagram of the embodiment of the present invention and comparing embodiment.
Figure 11 is the structural representation in narrow viewing angle for the liquid crystal indicator in second embodiment of the invention.
Figure 12 is the structural representation in wide viewing angle for the liquid crystal indicator in Figure 11.
Specific embodiment
For further illustrating that the present invention is to reach technical approach and effect that predetermined goal of the invention is taken, below in conjunction with
Drawings and Examples, to the specific embodiment of the present invention, structure, feature and its effect, after describing in detail such as.
[first embodiment]
Fig. 3 is the structural representation in wide viewing angle for the liquid crystal indicator in first embodiment of the invention, and Fig. 4 is in Fig. 3
The structural representation in narrow viewing angle for the liquid crystal indicator, please join Fig. 3 and Fig. 4, and this liquid crystal indicator includes display floater 20,
This display floater 20 include second substrate 22 that first substrate 21 is oppositely arranged with first substrate 21 and be located at first substrate 21 with
Liquid crystal layer 23 between second substrate 22.
Generally, when user watches the screen of liquid crystal indicator from different visual angle, the brightness of image can be with
The increase at visual angle and reduce.The liquid crystal indicator of traditional twisted nematic (Twisted Nematic, TN), common electrical
Pole is respectively formed on upper and lower two different substrates with pixel electrode, and liquid crystal molecule is in a plane inward turning vertical with substrate
Turn.However, in TN type liquid crystal indicator, the liquid crystal molecule near the surface location of two substrates is mutually orthogonal arrangement
, lead to the visual angle of TN type liquid crystal indicator narrow.For realizing wide viewing angle, using the plane inner switching type of horizontal component of electric field
(In-Plane Switching, IPS) and fringe field switch type (the Fringe Field using fringe field
Switching, FFS) liquid crystal indicator be developed.For the liquid crystal indicator of IPS type or FFS type, common electrical
Pole and pixel electrode are formed on same substrate (i.e. thin-film transistor array base-plate), and liquid crystal molecule is almost parallel with substrate
Plane in rotation thus obtaining wider array of visual angle.
The liquid crystal indicator that the present embodiment provides is applied to plane inner switching type (IPS), fringe field switch type (FFS)
The liquid crystal indicator of isotype, public electrode and pixel electrode are both formed in same substrate (i.e. thin-film transistor array base-plate)
On, when applying, between public electrode and pixel electrode, the electric field showing, liquid crystal molecule is in the plane almost parallel with substrate
Interior rotation is to obtain wider visual angle.In the present embodiment, this liquid crystal indicator is entered taking fringe field switch type (FFS) as a example
Row explanation.
In the present embodiment, first substrate 21 is, for example, colored filter substrate, and second substrate 22 is, for example, thin film transistor (TFT)
Array base palte.First substrate 21 is provided with the first polaroid 211 in the side of dorsad liquid crystal layer 23, and second substrate 22 is in dorsad liquid crystal
The side of layer 23 is provided with the second polaroid 221, and the first polaroid 211 is mutually perpendicular to the printing opacity direction of principal axis of the second polaroid 221.
In the present embodiment, first substrate 21 is being provided with viewing angle control electrode 212, first insulation towards the side of liquid crystal layer 23
Layer 213 and suspension electrode 214, suspension electrode 214 and viewing angle control electrode 212 be provided separately with Different Plane on, suspension electrode
Separated and mutually insulated by the first insulating barrier 213 between 214 and viewing angle control electrode 212, the thickness of the first insulating barrier 213 can be
1.5um～3um.
Fig. 5 is the electrical block diagram of liquid crystal indicator in Fig. 3, incorporated by reference to Fig. 5, in the present embodiment, second substrate
22 are being provided with scan line 222, data wire 223, thin film transistor (TFT) (TFT) 224, public electrode 225 towards the side of liquid crystal layer 23
(common electrode), the second insulating barrier 226 and pixel electrode 227 (pixel electrode).Public electrode 225 with
Pass through the second insulating barrier 226 between pixel electrode 227 to be spaced apart and mutually insulated.It should be understood that ground, in the present embodiment, first
Film layer structure related to the present invention is only illustrated, with the incoherent film layer structure of the present invention then on substrate 21 and second substrate 22
Omitted.
The restriction as shown in figure 5, multi-strip scanning line 222 and a plurality of data lines 223 intersect forms multiple sub-pixel SP
(sub-pixel).Sub-pixel SP is, for example, red (R), green (G) or blue (B) sub-pixel, multiple adjacent sub-pixel SP structures
Become a display pixel (pixel).For example, a display pixel may include red (R), green (G) and blue (B) three sub- pictures
Plain SP.It is provided with pixel electrode 227 and thin film transistor (TFT) (TFT) 224, thin film transistor (TFT) 224 is located at scanning in each sub-pixel SP
Near the position that line 222 is intersected with data wire 223.Each thin film transistor (TFT) 224 includes grid, source electrode and drain electrode (not shown),
Wherein grid electrically connects corresponding scan line 222, source electrode and one of the drain electrode corresponding data wire 223 of electrical connection, source electrode and drain electrode
Another electrical connection corresponding pixel electrode 227, for example source electrode electrically connect corresponding data wire 223, drain electrode electrical connection corresponding
Pixel electrode 227.
For simplicity, Fig. 3 with illustrate only structural representation corresponding with sub-pixel SP in Fig. 4.In the present embodiment,
Pixel electrode 227 is located above public electrode 225, is interval with the second insulating barrier 226 between the two, but not limited to this.At it
In his embodiment, pixel electrode 227 can also be located at below public electrode 225.In addition, when using plane inner switching type (IPS)
During the liquid crystal indicator of pattern, public electrode 225 and pixel electrode 227 may be located in same layer and mutually insulated, this
When public electrode 225 and pixel electrode 227 can be respectively prepared the pectinate texture with multiple electrodes bar and be mutually inserted cooperation.
Viewing angle control electrode 212, suspension electrode 214, public electrode 225 can adopt ITO (Indium sesquioxide. with pixel electrode 227
Stannum), the electrically conducting transparent material such as IZO (indium zinc oxide) makes.Viewing angle control electrode 212 can be the whole face electricity not being patterned
Pole (as Fig. 3).Public electrode 225 can be the whole face electrode that local is patterned, for example, form each on second substrate 22
The position of TFT 224, public electrode 225 is partly etched removal, make each pixel electrode 227 can by position herein to
Lower conducting connects to corresponding TFT 224.
Fig. 6 is the structural representation of the pixel electrode of liquid crystal indicator in Fig. 3, please join 5 and Fig. 6, positioned at every height picture
Pixel electrode 227 in plain SP includes spaced multiple pixel electrode bar 227a, and the plurality of pixel electrode bar 227a is at end
Portion is linked together and is electrically connected with TFT 224, forms slit 227b between adjacent pixel electrode bar 227a.
Fig. 7 a to Fig. 7 b is the structural representation of the suspension electrode in different instances of the present invention, please join Fig. 7 a to Fig. 7 b, hangs
Floating electrode 214 is arranged in each sub-pixel SP.Suspension electrode 214 in each sub-pixel SP includes spaced many
Individual suspension electrode bar 214a, the plurality of suspension electrode bar 214a can be each independently of the others setting (as shown in Figure 7a) or at end
Portion links together (as shown in Figure 7b), forms slit 214b between adjacent suspension electrode bar 214a.In the present embodiment, adjacent
Suspension electrode 214 between sub-pixel SP is mutually not attached to, for being provided separately.
Please join Fig. 3, in each sub-pixel SP, each suspension electrode bar 214a of suspension electrode 214 respectively with pixel electrode
227 each pixel electrode bar 227a is correspondingly arranged up and down.Preferably, each suspension electrode bar 214a respectively with each pixel electrode bar
227a is perfectly aligned up and down, but the deviation in view of processing procedure para-position, each suspension electrode bar 214a and each pixel electrode bar 227a it
Between para-position up and down can also there is certain deviation.
Liquid crystal molecule is generally divided into positivity liquid crystal molecule and negative liquid crystal molecule.Liquid in the present embodiment, in liquid crystal layer 23
Brilliant molecule is positivity liquid crystal molecule, and positivity liquid crystal molecule possesses the fast advantage of response.In original state, (i.e. display floater 20 is not applied
Plus the situation of any voltage) under, the positivity liquid crystal molecule in liquid crystal layer 23 assumes the lie low appearance substantially parallel with substrate 21,22
State, makes the long axis direction of positivity liquid crystal molecule substantially parallel with the surface of substrate 21,22 (as Fig. 3).Due to alignment film, (figure is not
Show) grappling effect, under the original state not applying any voltage, positivity liquid crystal molecule may remain in this display floater 20
Lie low attitude.In practical application, between positivity liquid crystal molecule in liquid crystal layer 23 and substrate 21,22, can have the initial of very little
Tilt angle, the scope of this initial tilt angle can be within 10 °, that is,：0°≦θ≦10°.Under electric field action, positivity liquid crystal molecule
Major axis can deflect towards the trend parallel with electric field line direction.
Viewing angle control electrode 212 is used for controlling view angle switch, by controlling the biasing being applied on viewing angle control electrode 212
Voltage, this liquid crystal indicator can switch between wide viewing angle pattern and narrow viewing angle pattern.Described below " bias voltage " be regarding
Potential difference between angle coordination electrode 212 and public electrode 225.
Please join Fig. 3, (comprise the bias voltage applying very little such as when bias voltage is not applied on viewing angle control electrode 212
Situation less than 0.5V) when, the angle of inclination of liquid crystal molecule hardly changes, and the face internal electric field that liquid crystal molecule is traditional drives
Flowing mode, by the face being formed between the pixel electrode 227 on same substrate (i.e. second substrate 22) and public electrode 225
Rotating with the parallel plane of substrate 21,22, liquid crystal molecule is under the internal electric field effect of stronger face for electric field driven liquid crystal molecule
Realize wide viewing angle pattern.
Please join Fig. 4, when the bias voltage of larger (being greater than 2V) is applied on viewing angle control electrode 212, due to
There is potential difference between the public electrode 225 on viewing angle control electrode 212 and second substrate 22 on one substrate 21, can be at two
Form vertical electric field (as shown in figure arrow E), because positivity liquid crystal molecule will be along under electric field action between substrate 21,22
Direction parallel to electric field line rotates, positivity liquid crystal molecule this vertical electric field effect under will deflect, make liquid crystal molecule with
Angle of inclination between substrate 21,22 increases so that the screen in this display floater 20 is looked side ways on direction, through liquid crystal molecule
Light is mismatched with upper down polaroid 211,221 due to Phase delay, occurs in that light leakage phenomena, leads to from this display floater 20
When watching screen on stravismus direction, the contrast of screen reduces and affects viewing effect, so that visual angle is reduced, thus realizing narrow viewing angle
Pattern.
In the present embodiment, this display floater 20, when being shown, is that direct current is public to the voltage of public electrode 225 output
Voltage (i.e. DC Vcom).When this display floater 20 is in wide viewing angle pattern, the voltage applying on viewing angle control electrode 212 is
The idiostatic direct current signal with public electrode 225, or be to differ the such as less than direct current signal of 0.5V with public electrode 225, or
Person is around the public electrode 225 fluctuating margin such as less than AC signal of 0.5V, so between two substrates 21,22 hardly
Vertical electric field can be formed.When this display floater 20 is in narrow viewing angle pattern, the voltage applying on viewing angle control electrode 212 is phase
Public electrode 225 is had to direct current signal or the AC signal of higher magnitude (such as larger than 2V), thus in two substrates 21,22
Between formed vertical electric field E and drive liquid crystal molecule deflect, finally realize narrow viewing angle and show.In addition, this display floater 20 is entering
During row display, whether wide viewing angle pattern or narrow viewing angle pattern, suspension electrode 214 is in all the time not outstanding to voltage signal
Floating state.
Fig. 8 a to Fig. 8 b is the planar structure schematic diagram of liquid crystal indicator in Fig. 3, please join Fig. 8 a to Fig. 8 b, this liquid crystal
Showing device also includes drive circuit 30 and viewing angle control button 40, and drive circuit 30 is used for applying to use to viewing angle control electrode 212
In the voltage controlling needed for view angle switch and to public electrode 225 output direct current common electric voltage (i.e. DC Vcom), viewing angle control is pressed
Key 40 is used for sending view angle switch request for user to this liquid crystal indicator.View angle switch button 40 can be physical button
(as shown in Figure 8 a), alternatively software controls or application program (APP) is (as shown in Figure 8 b, logical to realize view angle switch function
Cross touch-control slider bar and to set width visual angle).Under normal circumstances, viewing angle control electrode 212 does not apply or apply less
Bias voltage, this liquid crystal indicator is under wide viewing angle pattern.Need to switch to narrow viewing angle pattern when there being peep-proof demand
When, user can send view angle switch request by operating this viewing angle control button 40, when receiving the request of this view angle switch, drives
Galvanic electricity road 30 applies direct current or the alternating voltage of higher magnitude to viewing angle control electrode 212, the visual angle control on first substrate 21
Produce potential difference between public electrode 225 on electrode 212 processed and second substrate 22, make first substrate 21 and second substrate 22 it
Between produce vertical electric field E, and by this vertical electric field E drive liquid crystal molecule deflection, thus realize leniently field-of-view mode switch to narrow
Field-of-view mode.When not needing narrow viewing angle display, user can be by operating this viewing angle control button 40 again, and revocation is applied to
Voltage on viewing angle control electrode 212, thus be back to wide viewing angle show.Therefore, the visual angle of the embodiment of the present invention is switchable
Liquid crystal indicator has stronger operating flexibility and convenience.
In the present embodiment, when realizing width view angle switch, the voltage being applied on viewing angle control electrode 212 can be straight
Stream voltage or periodic alternating voltage.When the voltage being applied on viewing angle control electrode 212 is alternating voltage,
The waveform of this alternating voltage fluctuates around output up and down to the direct current common electric voltage (i.e. DC Vcom) of public electrode 225.
Fig. 9 a to Fig. 9 b is the display effect schematic diagram of the embodiment of the present invention and a comparing embodiment, and wherein Fig. 9 a is should
The display effect schematic diagram of the liquid crystal indicator in comparing embodiment, Fig. 9 b is the liquid crystal indicator in the embodiment of the present invention
Display effect schematic diagram.In this comparing embodiment, in addition to being not provided with suspension electrode 214, remaining structure is real with the present invention
Apply example identical.
Please join Fig. 9 a, in this comparing embodiment, when wide viewing angle shows, due to viewing angle control electrode 212 and public electrode
225 be same potential or potential difference very little, under wide viewing angle show, can second substrate 22 each pixel electrode bar 227a and
Larger potential difference is produced so that each pixel electrode bar 227a is controlled with visual angle between the viewing angle control electrode 212 of first substrate 21
There is stronger vertical electric field, thus the liquid crystal molecule corresponding with each pixel electrode bar 227a can produce between electrode 212 processed
Raw wide-angle deflection (as shown in the liquid crystal molecule in dotted line frame A1 in Fig. 9 a), impact liquid crystal indicator is under wide viewing angle shows
Penetrance, wherein curve C1 is the penetrance curve of this comparing embodiment, with each pixel electrode bar 227a opposite position
The penetrance at place's (as shown in dotted line frame B1 in Fig. 9 a) is relatively low.
Please join Fig. 9 b, in the embodiment of the present invention, due on first substrate 21 in position corresponding with each pixel electrode bar 227a
Install suspension electrode bar 214a, under wide viewing angle shows, the suspension electrode 214 in each sub-pixel SP can be by the pixel of lower section
Electrode 227 couples, due to the presence of suspension electrode 214, weaken each pixel electrode bar 227a and viewing angle control electrode 212 it
Between original vertical electric field, thus reducing the deflection angle of the liquid crystal molecule corresponding with each pixel electrode bar 227a (as figure
Shown in liquid crystal molecule in dotted line frame A2 in 9b), thus improving penetrance under wide viewing angle pattern for the embodiment of the present invention, wherein
Curve C2 is (as void in Fig. 9 b at the penetrance curve of the embodiment of the present invention, with each pixel electrode bar 227a opposite position
Shown in wire frame B2) penetrance be significantly improved.Compared to this comparing embodiment, the embodiment of the present invention is under wide viewing angle pattern
Penetrance improve 32.3% about.
Penetrance data form in different instances of the present invention
| The embodiment of the present invention | Suspension electrode width | Suspension electrode spacing | Penetrance |
| Example one | 3um | 2um | 3.645% |
| Example two | 2.5um | 2.5um | 4.26% |
| Example three | 2um | 3um | 3.73% |
Penetrating under the wide viewing angle pattern obtaining in different instances of the present invention is listed by simulation experiment in table above
Rate data.In comparing embodiment, the penetrance under wide viewing angle pattern is 3.22%.It is seen from the above data that the present invention
In the width of suspension electrode bar 214a each example different with spacing value, under the wide viewing angle pattern being obtained, penetrance is equal
Higher than this comparing embodiment.And, even if there is certain para-position between suspension electrode bar 214a and pixel electrode bar 227a
Deviation, penetrance under wide viewing angle pattern for the embodiment of the present invention is still high than the penetrance of this comparing embodiment.
Figure 10 a to Figure 10 b is the contrast schematic diagram of the embodiment of the present invention and comparing embodiment, and wherein Figure 10 a is this
Center contrast schematic diagram in the horizontal direction under the wide viewing angle pattern of bright embodiment and comparing embodiment, curve Q1 represents and compares
Embodiment center contrast curves in the horizontal direction, curve Q2 represents embodiment of the present invention center contrast in the horizontal direction
Curve, Figure 10 b is that under the embodiment of the present invention and the wide viewing angle pattern of comparing embodiment, the center contrast in vertical direction is illustrated
Figure, curve Q3 represents the center contrast curves in vertical direction for the comparing embodiment, and curve Q4 represents the embodiment of the present invention and hanging down
Nogata to center contrast curves, it is seen that the embodiment of the present invention propose liquid crystal indicator, regard when being in width
When under angle mould formula, center contrast (CR) in the horizontal direction and the vertical direction is all higher than this comparing embodiment, compared to
This comparing embodiment, center contrast under wide viewing angle pattern for the embodiment of the present invention improves 36.25% about, therefore can
Realize embodiment of the present invention while view angle switch and there is higher wide viewing angle center contrast.
In addition, according to simplation verification, the DC voltage applying 5V on viewing angle control electrode 212 realizes narrow viewing angle pattern
When, this comparing embodiment can reach peep-proof angle and be 30 °, and the embodiment of the present invention can reach peep-proof angle and be 25 °.When regarding
When in angle coordination electrode 212, the DC voltage of applying 4V realizes narrow viewing angle pattern, the embodiment of the present invention can reach peep-proof angle
For 30 °.When i.e. the embodiment of the present invention applies identical voltage such as 5V on the viewing angle control electrode 212 of first substrate 21, narrow viewing angle
Peep-proof angle under pattern expands 5 ° than the peep-proof angular range of this comparing embodiment, and narrow viewing angle is narrower.Control when being applied to visual angle
When voltage on electrode 212 processed declines 1V, the embodiment of the present invention still can reach and this comparing embodiment identical narrow viewing angle effect,
Therefore the embodiment of the present invention can reduce, under narrow viewing angle pattern, the driving voltage being applied on viewing angle control electrode 212.
The liquid crystal indicator that the embodiment of the present invention proposes, first substrate 21 is provided with each sub-pixel SP suspension electricity
Pole 214, the suspension electrode 214 in each sub-pixel SP is corresponding with pixel electrode 227, makes each suspension electrode bar 214a and each picture
Plain electrode strip 227a is correspondingly arranged up and down.The presence of suspension electrode 214 can reduce liquid crystal molecule to a certain extent in vertical substrate
The tilting degree in direction, can improve penetrance and contrast under wide viewing angle pattern, and can reduce under narrow viewing angle pattern and apply
The voltage magnitude that is added on viewing angle control electrode 212 and maintaining and this comparing embodiment identical narrow viewing angle peep-proof angle,
There is wide viewing angle pattern downwards angle of visibility wider, the narrower display effect of narrow viewing angle pattern downwards angle of visibility.The embodiment of the present invention can be freely light
Pine switching wide viewing angle and narrow viewing angle, has stronger operating flexibility and convenience, reach collect entertainment video and privacy maintain secrecy in
The Multifunctional liquid crystal display device of one.
In order to apply bias voltage to the viewing angle control electrode 212 on first substrate 21, viewing angle control electrode 212 is in periphery
Non-display area can be conducted to second substrate 22 by conducting resinl (not shown) from first substrate 21, provides electricity by drive circuit 30
Pressure signal is to second substrate 22, then the visual angle control that voltage signal is applied to by conducting resinl first substrate 21 by second substrate 22
On electrode 212 processed.Therefore first insulating barrier 213 could be formed with perforation (not shown) in peripheral non-display area, is regarded with exposing
Angle coordination electrode 212, consequently facilitating conducting resinl is electrically connected with viewing angle control electrode 212 by this perforation.
[second embodiment]
Figure 11 is the structural representation in narrow viewing angle for the liquid crystal indicator in second embodiment of the invention, and Figure 12 is Figure 11
The structural representation in wide viewing angle for the middle liquid crystal indicator, please join Figure 11 and Figure 12, the present embodiment and above-mentioned first embodiment
Differ primarily in that, the liquid crystal layer 23 in the present embodiment employs negative liquid crystal molecule.In original state (i.e. display floater 20
Do not apply the situation of any voltage) under, negative liquid crystal molecule in liquid crystal layer 23 has larger initial with respect to substrate 21,22
Tilt angle, that is, negative liquid crystal molecule is with respect to substrate 21,22 inclined attitudes (as Figure 11).The electric field being formed in applied voltage is made
With under, the major axis of negative liquid crystal molecule can deflect towards the trend vertical with electric field line direction.
Please join Figure 11, viewing angle control electrode 212 not apply bias voltage and (comprises to apply the bias voltage of very little such as less than
The situation of 0.5V) when, because the tilt angle of liquid crystal molecule in liquid crystal layer 23 is larger, therefore the screen in this display floater 20 is looked side ways
On direction, the light through liquid crystal molecule is mismatched with upper down polaroid 211,221 due to Phase delay, light leakage phenomena,
When leading to watch screen from the stravismus direction of this display floater 20, the contrast of screen reduces and affects viewing effect, makes to regard
Angle reduces, thus realizing narrow viewing angle pattern.
Please join Figure 12, when the bias voltage of larger (being greater than 2V) is applied on viewing angle control electrode 212, due to
There is potential difference between the public electrode 225 on viewing angle control electrode 212 and second substrate 22 on one substrate 21, thus two
Form vertical electric field (as shown in figure arrow E), negative liquid crystal molecule will under the effect of this vertical electric field between individual substrate 21,22
Deflect, so that the angle of inclination between liquid crystal molecule and substrate 21,22 is reduced.When the inclination angle of liquid crystal molecule reduce to base
When plate 21,22 is almost parallel, on the screen stravismus direction of this display floater 20, light leakage phenomena can accordingly reduce, this display surface
The visual angle of plate 20 increases therewith, thus realizing wide viewing angle pattern.
That is, in the above-described first embodiment, liquid crystal layer 23 adopts positivity liquid crystal molecule, in an initial condition, just
Property liquid crystal molecule be in lie low attitude and display floater 20 be wide viewing angle pattern；When needing to switch to narrow viewing angle pattern, at visual angle
Larger voltage signal is applied on coordination electrode 212, forms vertical electric field between two substrates 21,22 and drive positivity liquid crystal to divide
Son deflects to lateral attitude, makes display floater 20 show that switching to narrow viewing angle shows from wide viewing angle.
In the present embodiment, liquid crystal layer 23 adopts negative liquid crystal molecule, in an initial condition, the inclined appearance of negative liquid crystal molecule
State and display floater 20 are narrow viewing angle pattern；When needing to switch to wide viewing angle pattern, viewing angle control electrode 212 applies relatively
Big voltage signal, forms vertical electric field and drives negative liquid crystal molecule to deflect to the attitude that lies low, make between two substrates 21,22
From narrow viewing angle, display floater 20 shows that switching to wide viewing angle shows.
In the present embodiment, in an initial condition, the inclined attitude of negative liquid crystal molecule and display floater 20 are narrow viewing angle mould
Formula.Under narrow viewing angle pattern, because viewing angle control electrode 212 and public electrode 225 are same potential or potential difference very little,
Under narrow viewing angle shows, can the viewing angle control electrode 212 of each pixel electrode bar 227a and the first substrate 21 of second substrate 22 it
Between produce larger potential difference so that there is stronger vertical electricity between each pixel electrode bar 227a and viewing angle control electrode 212
, this vertical electric field can make the negative liquid crystal molecule corresponding with each pixel electrode bar 227a towards the attitude deflection that lies low, thus
Narrow viewing angle effect under narrow viewing angle pattern for the liquid crystal indicator in impact the present embodiment.Outstanding by arranging on first substrate 21
Floating electrode 214, can be weakened original between each pixel electrode bar 227a and viewing angle control electrode 212 by this suspension electrode 214
Vertical electric field so that the negative liquid crystal molecule corresponding with each pixel electrode bar 227a still keeps lateral attitude, be lifted at narrow
Narrow viewing angle effect under field-of-view mode.
With regard to the other structures of the present embodiment, may refer to above-mentioned first embodiment, will not be described here.
The above, be only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, all still fall within the range of technical solution of the present invention.
Claims (10)
1. the switchable liquid crystal indicator in a kind of visual angle, including display floater (20), this display floater (20) includes the first base
Second substrate (22) that plate (21) and this first substrate (21) are oppositely arranged and be located at this first substrate (21) and this second substrate
(22) liquid crystal layer (23) between is it is characterised in that this first substrate (21) is provided with viewing angle control electrode (212) and the electricity that suspends
Pole (214), this viewing angle control electrode (212) and the setting of this suspension electrode (214) mutually insulated, this second substrate (22) is provided with
Public electrode (225) and pixel electrode (227), this public electrode (225) and the setting of this pixel electrode (227) mutually insulated, should
Pixel electrode (227) is arranged in each sub-pixel (SP) and includes spaced multiple pixel electrode bars (227a), and this hangs
Floating electrode (214) is arranged in each sub-pixel (SP) and includes spaced multiple suspension electrode bars (214a), each suspension
Electrode strip (214a) is correspondingly arranged up and down with each pixel electrode bar (227a) respectively, and this suspension electrode (214) is in suspended state,
This viewing angle control electrode (212) is used for the voltage signal applying to control view angle switch.
2. the switchable liquid crystal indicator in visual angle according to claim 1 it is characterised in that this liquid crystal indicator also
Including drive circuit (30), for applying for controlling the voltage signal needed for view angle switch to this viewing angle control electrode (212)
And export direct current public voltage signal to this public electrode (225).
3. the switchable liquid crystal indicator in visual angle according to claim 1 it is characterised in that this liquid crystal indicator also
Including viewing angle control button (40), for sending view angle switch request to this liquid crystal indicator.
4. the switchable liquid crystal indicator in visual angle according to claim 3 is it is characterised in that this viewing angle control button
(30) it is physical button or virtual key.
5. the switchable liquid crystal indicator in visual angle according to claim 1 it is characterised in that adjacent subpixels (SP) it
Between suspension electrode (214) be mutually not attached to, for being provided separately.
6. the switchable liquid crystal indicator in visual angle according to claim 1 is it is characterised in that on this first substrate (21)
It is additionally provided with the first insulating barrier (213), by this first insulating barrier between this viewing angle control electrode (212) and this suspension electrode (214)
(213) separate.
7. the switchable liquid crystal indicator in visual angle according to claim 6 is it is characterised in that on this second substrate (22)
It is additionally provided with the second insulating barrier (226), by this second insulating barrier (226) between this public electrode (225) and this pixel electrode (227)
Separate.
8. the switchable liquid crystal indicator in visual angle according to claim 1 is it is characterised in that be located at each sub-pixel
(SP) the plurality of suspension electrode bar (214a) in is each independently of the others setting or links together in end, adjacent suspension
Form slit (214b) between electrode strip (214a).
9. the switchable liquid crystal indicator in visual angle according to claim 1 is it is characterised in that in this liquid crystal layer (23)
Liquid crystal molecule is positivity liquid crystal molecule, and in an initial condition, this positivity liquid crystal molecule is in lie low attitude and this display floater
(20) there is wide viewing angle；When to this viewing angle control electrode (212) applied voltage signal, this positivity liquid crystal molecule is from the attitude that lies low
Deflect to lateral attitude and this display floater (20) leniently view angle switch to narrow viewing angle.
10. the switchable liquid crystal indicator in visual angle according to claim 1 is it is characterised in that this liquid crystal layer (23) is interior
Liquid crystal molecule be negative liquid crystal molecule, in an initial condition, this negative liquid crystal molecule is in lateral attitude and this display floater
(20) there is narrow viewing angle；When to this viewing angle control electrode (212) applied voltage signal, this negative liquid crystal molecule is from lateral attitude
Deflect to the attitude and this display floater (20) switches to wide viewing angle from narrow viewing angle of lying low.
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| CN108897151A (en) * | 2018-07-17 | 2018-11-27 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle |
| CN109324449A (en) * | 2018-11-15 | 2019-02-12 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN111458940A (en) * | 2020-05-14 | 2020-07-28 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111812897A (en) * | 2020-07-27 | 2020-10-23 | 昆山龙腾光电股份有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
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| CN109324449B (en) * | 2018-11-15 | 2021-06-22 | 昆山龙腾光电股份有限公司 | Liquid crystal display device and driving method thereof |
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| CN106444104B (en) | 2019-04-05 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |