CN208705608U - The changeable liquid crystal display device in visual angle - Google Patents
The changeable liquid crystal display device in visual angle Download PDFInfo
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- CN208705608U CN208705608U CN201821268203.9U CN201821268203U CN208705608U CN 208705608 U CN208705608 U CN 208705608U CN 201821268203 U CN201821268203 U CN 201821268203U CN 208705608 U CN208705608 U CN 208705608U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 81
- 230000000007 visual effect Effects 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 61
- 239000010408 film Substances 0.000 claims abstract description 52
- 239000012528 membrane Substances 0.000 claims abstract description 31
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 244000144985 peep Species 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The changeable liquid crystal display device in visual angle includes array substrate, color membrane substrates and liquid crystal layer, the color membrane substrates are equipped with color blocking layer and black matrix, the color membrane substrates are additionally provided with first electrode layer, light modulation film layer and the second electrode lay in the side towards the liquid crystal layer, the light modulation film layer is arranged between the first electrode layer and the second electrode lay, which is located at the black matrix within the drop shadow spread on the color membrane substrates in the projection on the color membrane substrates；At least one of the first electrode layer and the second electrode lay are viewing angle control electrode；Under wide viewing angle mode, the voltage with voltage difference is applied to the first electrode layer and the second electrode lay；Under narrow viewing angle mode, to first electrode layer and/or the second electrode lay application viewing angle control voltage as viewing angle control electrode.The changeable liquid crystal display device in visual angle provided by the utility model, the gray-scale inversion fuzzy pictures under the big visual angle of narrow viewing angle peep-proof mode, peep-proof effect are good.
Description
Technical field
The utility model relates to the technical fields of liquid crystal display, fill more particularly to the liquid crystal display that a kind of visual angle can be switched
It sets.
Background technique
Liquid crystal display device (liquid crystal display, LCD) has good, small in size, light-weight, the low drive of image quality
Dynamic 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.
As shown in Figure 1, the viewing angle control electrode 111 on upper substrate 11 does not give voltage in wide viewing angle display, liquid crystal display device is realized
Wide viewing angle is shown.As shown in Fig. 2, the viewing angle control electrode 111 on upper substrate 11 gives voltage, liquid when needing narrow viewing angle to show
Liquid crystal molecule in crystal layer 13 can be tilted because of vertical direction electric field E (as shown by arrows in figure), liquid crystal display device because of
Light leakage and contrast reduce, and finally realize narrow viewing angle.
There is peep-proof mode and issue at big visual angle in the changeable liquid crystal display device in many visual angles having disclosed at present
Raw gray-scale inversion problem, especially under the bigger picture of contrast (such as text interface of black and white tone), since grayscale is anti-
The presence turned, at big visual angle, peep-proof effect can be influenced and be reduced the taste of peep-proof mode by gray-scale inversion, or even be influenced anti-
Peep effect (picture after gray-scale inversion still can recognize that content).How visual angle changeable liquid crystal display device is improved anti-
Peep the gray-scale inversion under the big visual angle of mode, it has also become urgent problem to be solved at present.
Utility model content
The purpose of this utility model is to provide the liquid crystal display devices that a kind of visual angle can be switched, in narrow viewing angle peep-proof mode
Gray-scale inversion fuzzy pictures under big visual angle, peep-proof effect are good.
The utility model embodiment provides a kind of liquid crystal display device that visual angle is changeable, including array substrate and the battle array
The color membrane substrates that column substrate is oppositely arranged and the liquid crystal layer between the array substrate and the color membrane substrates, on the color membrane substrates
Equipped with color blocking layer and black matrix, the color membrane substrates the side towards the liquid crystal layer be additionally provided with first electrode layer, light modulation film layer and
The second electrode lay, the light modulation film layer are arranged between the first electrode layer and the second electrode lay, and the light modulation film layer is in the coloured silk film
Projection on substrate is located at the black matrix within the drop shadow spread on the color membrane substrates；The first electrode layer and the second electrode
At least one of layer is viewing angle control electrode；Under wide viewing angle mode, the first electrode layer and the second electrode lay are applied
Voltage with voltage difference；Under narrow viewing angle mode, to first electrode layer and/or second electricity as viewing angle control electrode
Pole layer applies viewing angle control voltage.
Further, the material of the light modulation film layer is polymer dispersed liquid crystals.
Further, the thickness for dimming film layer is 0.5 μm~2 μm.
Further, the voltage difference in wide viewing angle mode between the first electrode layer and the second electrode lay be 8V~
20V。
Further, do not apply electricity one of in the first electrode layer and the second electrode lay in narrow viewing angle mode
Pressure, wherein another as viewing angle control electrode application viewing angle control voltage.
Further, in narrow viewing angle mode, the first electrode layer and the second electrode lay apply identical voltage as view
Angle controls voltage.
Further, the first electrode layer, the light modulation film layer and the second electrode lay pattern having the same.
Further, which compares the first electrode layer closer to the liquid crystal layer, which is to cover
The plane-shape electrode of the color membrane substrates is covered, the light modulation film layer and the second electrode lay pattern having the same.
Further, the voltage that the first electrode layer is applied in wide viewing angle mode is 0V, is applied to the second electrode
The voltage of layer is the positivity voltage greater than 0V.
Further, which is equipped with public electrode；The liquid crystal layer uses positive liquid crystal molecules, in wide viewing angle mould
Under formula, apply reference voltage to the public electrode, and be less than the voltage difference between the public electrode and the viewing angle control electrode
First preset value；Under narrow viewing angle mode, apply reference voltage to the public electrode, applies opposite be somebody's turn to do to the viewing angle control electrode
Reference voltage has the viewing angle control voltage of higher magnitude, keeps the voltage difference between the public electrode and the viewing angle control electrode big
In the second preset value；Wherein, which is greater than or equal to first preset value.
The changeable liquid crystal display device in visual angle provided by the embodiment of the utility model, is adjusted due to being provided on color membrane substrates
Light film, the light under big visual angle is passed through from the light modulation film layer around each pixel unit, in wide viewing angle mode, dims film layer
For pellucidity, light does not occur to reflect in light modulation film layer and directly transmit, the pattern presented under big visual angle not by
It influences.In narrow viewing angle mode, light modulation film layer is non-transparent state, effective refraction that light passes through the liquid crystal droplet in light modulation film layer
Rate and the refractive index for passing through polymer are very big, light multiple reflections and refraction on liquid crystal and polymer interface, and film is in
Strong scattering state, the pattern after gray-scale inversion occurs show " frosted " or " white haze " state, and human eye can not debate knowledge,
Effectively improve peep-proof effect.
Detailed description of the invention
Fig. 1 is a kind of schematic partial cross-sectional view of the existing liquid crystal display device under wide viewing angle.
Fig. 2 is schematic partial cross-sectional view of the liquid crystal display device under narrow viewing angle in Fig. 1.
Fig. 3 is part of the changeable liquid crystal display device in the visual angle of the implementation of the utility model first under wide viewing angle mode
Schematic cross-section.
Fig. 4 is that part of the changeable liquid crystal display device in the visual angle of the implementation of the utility model first under narrow angle mould formula is cut
Face schematic diagram.
Fig. 5 is part of the changeable liquid crystal display device in the visual angle of the implementation of the utility model second under wide viewing angle mode
Schematic cross-section.
Specific embodiment
Further to illustrate that the utility model is to reach the technical approach and effect that predetermined purpose of utility model is taken,
With reference to the accompanying drawings and embodiments, it to specific embodiment of the present utility model, structure, feature and its effect, is described in detail such as
Afterwards.
[first embodiment]
It please join Fig. 3, the changeable liquid crystal display device 50 in the visual angle that the utility model first embodiment provides includes array
The color membrane substrates 30 that substrate 20 and array substrate 20 are oppositely arranged and the liquid between array substrate 20 and color membrane substrates 30
Crystal layer 40.
Array substrate 20 is equipped with multi-strip scanning line (figure is not painted) and multiple data lines 22.Multi-strip scanning line and a plurality of number
Insulate the multiple pixel units for intersecting and limiting formation and being arranged in array according to line 22.A pixel electrode is equipped in each pixel unit
23, a thin film transistor (TFT) (figure is not painted) and public electrode 25, pixel electrode 23 is by thin film transistor (TFT) and closes on the film
The scan line and data line 22 of transistor connect.Specifically, thin film transistor (TFT) includes grid, source electrode and drain electrode, and wherein grid is electric
Corresponding scan line is connected, grid can be independently arranged or can be a part of scan line, and source electrode is electrically connected corresponding number
According to line 22, drain electrode is electrically connected corresponding pixel electrode 23.In the present embodiment, public electrode 25 and pixel electrode 23 are located at different layers
And it is folded with insulating layer between the two, the top of public electrode 25 is arranged in pixel electrode 23, and pixel electrode 23 is slit-shaped electricity
Pole, public electrode 25 is the plane-shape electrode that whole face covers array substrate 20, but is not limited thereto.
Color membrane substrates 30 are equipped with color blocking layer 31, black matrix (BM) 32 and other films well-known to those skilled in the art
Layer.Color blocking layer 31 is, for example, R, G, B color blocking.Color blocking layer 31 and the setting of black matrix 32 are in color membrane substrates 30 towards 40 side of liquid crystal layer
Surface on, other film layer structures be arranged in color blocking layer 31 and black matrix 32.
Color membrane substrates 30 are additionally provided with first electrode layer 33, light modulation film layer 34 and the second electricity in the side towards liquid crystal layer 40
Pole layer 35.In the present embodiment, the second electrode lay 35 compares first electrode layer 33 closer to liquid crystal layer 40, dims the setting of film layer 34 and exists
Between first electrode layer 33 and the second electrode lay 35.
In the present embodiment, light modulation film layer 34 is located at black matrix 32 on color membrane substrates 30 in the projection on color membrane substrates 30
Within drop shadow spread, and first electrode layer 33, light modulation film layer 34 and the pattern having the same of the second electrode lay 35.In other words,
First electrode layer 33, light modulation film layer 34 and the second electrode lay 35 are patterned and formed on the surface of black matrix 32, and with it is each
The surrounding of the corresponding color blocking of pixel unit is surrounded with light modulation film layer 34.
The material for dimming film layer 34 is, for example, polymer dispersed liquid crystals (PDLC).Polymer dispersed liquid crystals is a kind of adjustable
By the material of state, it is operated mainly between scattering states and transparent state light, that is, be formed by film itself can it is transparent with
Change between non-transparent state (visual effect close to ground glass), transparency is adjusted by voltage.Basic functional principle is: when to
When first electrode layer 33 and the second electrode lay 35 apply the voltage with voltage difference respectively, film layer 34 is dimmed under electric field action
Liquid Crystalline Polymeric Materials ordered arrangement can enable light through light modulation film layer 34, and the effect at this moment seen is clear, colorless
State.When first electrode layer 33 and the second electrode lay 35 do not apply voltage or apply the voltage without pressure difference, light modulation film layer 34
Liquid Crystalline Polymeric Materials are disorderly arranged, make light that can not penetrate film, and the effect at this moment seen is milky opaque shape
State.
In the present embodiment, the thickness of light modulation film layer 34 is 0.5 μm~2 μm.
First electrode layer 33 and the second electrode lay 35 are the electrodes of transparent material such as ITO production.
In the present embodiment, flatness layer 36 is additionally provided on color membrane substrates 30, flatness layer 36 covers first electrode layer 33, light modulation film
Layer 34 and the second electrode lay 35 side and from first electrode layer 33 expose color blocking layer 31 and black matrix 32.
Array substrate 20 is equipped with the first polaroid 27 far from 40 side of liquid crystal layer, and color membrane substrates 30 are far from 40 side of liquid crystal layer
It is additionally provided with the second polaroid 37, the light transmission shaft of the first polaroid 27 and the second polaroid 37 is vertical.
At least one of first electrode layer 33 and the second electrode lay 35 are used as viewing angle control electrode；In wide viewing angle mode
Under, the voltage with voltage difference is applied to first electrode layer 33 and the second electrode lay 35；Under narrow viewing angle mode, to as visual angle
The first electrode layer 33 and/or the second electrode lay 35 of coordination electrode apply viewing angle control voltage.
Liquid crystal molecule in liquid crystal layer 40 is positive liquid crystal molecules, and positive liquid crystal molecules, which have, responds fast advantage.Such as Fig. 3
Shown, under original state (i.e. liquid crystal display device do not apply any voltage situation), in liquid crystal layer 40 positivity liquid crystal point
The lying posture substantially parallel with substrate 20,30, the i.e. surface of the long axis direction Yu substrate 20,30 of positive liquid crystal molecules is presented in son
It is substantially parallel.But it in practical applications, can have between the positive liquid crystal molecules in liquid crystal layer 40 and substrate 20,30 lesser
The range of initial pre-tilt angle, 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 viewing angle control electrode of color membrane substrates 30 and the public electrode of array substrate 20 by control
Voltage signal on 25 can make the liquid crystal display device realize switching between wide viewing angle mode and narrow viewing angle mode.
In the present embodiment, using the second electrode lay 35 as viewing angle control electrode for, under wide viewing angle mode, to first electricity
Pole layer 33 and the second electrode lay 35 apply the voltage with voltage difference, apply reference voltage to public electrode 25, and make common electrical
Voltage difference between pole 25 and viewing angle control electrode (the second electrode lay 35) is less than the first preset value；At this point, due to all public
Voltage difference between electrode 25 and viewing angle control electrode 33 is smaller, and the tilt angle of liquid crystal molecule hardly happens in liquid crystal layer 40
Variation is maintained as lying posture, therefore the liquid crystal display device realizes that normal wide viewing angle is shown.
Preferably, the voltage difference in wide viewing angle mode between first electrode layer 33 and the second electrode lay 35 is 8V~20V.
Specifically, it under wide viewing angle mode, can be and the second electrode lay 35 in the reference voltage that public electrode 25 applies
Same or similar DC voltage, as long as making the voltage difference between public electrode 25 and viewing angle control electrode 33 less than first
Preset value.
Under narrow viewing angle mode, first electrode layer 33 does not apply voltage, applies reference voltage to public electrode 25, to visual angle
Coordination electrode (the second electrode lay 35) applies the viewing angle control voltage that relative datum voltage has higher magnitude, makes public electrode 25
Voltage difference between viewing angle control electrode is greater than the second preset value；Wherein, the second preset value is greater than or equal to the first preset value.
Specifically, under narrow viewing angle mode, as shown in figure 4, the reference voltage that public electrode 25 applies is, for example, to regard with width
Identical when angle, the viewing angle control voltage being applied on viewing angle control electrode (the second electrode lay 35) is, for example, to be with the reference voltage
Periodic AC voltage (such as fluctuation amplitude be 4V periodicity ac square-wave voltage) of the fluctuation amplitude greater than 3V above and below center, depending on
Angle controls for example every frame of voltage and converts a polarity, so that the voltage difference between public electrode 25 and viewing angle control electrode is big
In 3V, preferable narrow viewing angle effect may be implemented.
Since the voltage difference between public electrode 25 and viewing angle control electrode is larger, in liquid crystal cell in array substrate 20 with
Stronger vertical electric field E can be generated between color membrane substrates 30, since positive liquid crystal molecules will be along being parallel under electric field action
The direction of electric field line rotates, therefore positive liquid crystal molecules will deflect under vertical electric field effect, make liquid crystal molecule and battle array
Tilt angle between column substrate 20, color film 30 increases and tilts, and liquid crystal molecule is transformed to lateral attitude from lying posture, makes liquid
There is wide-angle observation light leakage in crystal device, reduces in strabismus Direction Contrast and visual angle narrows, the liquid crystal display device is most
Realize that narrow viewing angle is shown eventually.
In another embodiment of the utility model, first electrode layer 33 can also be used as to viewing angle control electrode, namely
It is to say, does not apply voltage one of in first electrode layer 33 and the second electrode lay 35 in narrow viewing angle mode, wherein another
Apply viewing angle control voltage as viewing angle control electrode.
It, can also be by first electrode layer 33 and second in narrow viewing angle mode in the another embodiment of the utility model
Electrode layer 35 applies identical voltage as viewing angle control voltage simultaneously.
The changeable liquid crystal display device 50 in the visual angle of the utility model is due to being provided with light modulation film layer on color membrane substrates 30
34, the light under big visual angle passes through that (the key head direction of such as Fig. 3 and Fig. 4 are from the light modulation film layer 34 around each pixel unit
It is the light trend under big visual angle), in wide viewing angle mode, light modulation film layer 34 is pellucidity, and light is in light modulation film layer 34
Do not occur to reflect and directly transmit, the pattern presented under big visual angle is unaffected.In narrow viewing angle mode, film layer is dimmed
34 be non-transparent state, and light is by dimming the effective refractive index of the liquid crystal droplet in film layer 34 and the refractive index phase for passing through polymer
Difference is very big, and light multiple reflections and refraction on liquid crystal and polymer interface, film is in strong scattering state, and grayscale is occurring
Pattern after reversion shows " frosted " or " white haze " state, and human eye can not debate knowledge, effectively improve peep-proof effect.
By comparison it is found that the pattern after gray-scale inversion occurs for the liquid crystal display device that the visual angle of the utility model can be switched
Become to obscure very much compared with pattern after gray-scale inversion occurs with the prior art, peep-proof effect has obtained biggish promotion.
[second embodiment]
It please join Fig. 5, the changeable liquid crystal display device 50 in the visual angle that the utility model second embodiment provides and above-mentioned the
The difference of one embodiment is, the second electrode lay 35 in the present embodiment compares first electrode layer 33 closer to liquid crystal layer 40,
One electrode layer 33 is the plane-shape electrode for covering entire color membrane substrates 30, dims film layer 34 and the figure having the same of the second electrode lay 35
Case.
When first electrode layer 33 is plane-shape electrode, under wide viewing angle mode, the voltage for being applied to first electrode layer 33 is
0V is applied to the voltage of the second electrode lay 35 as the positivity voltage greater than 0V.Preferably, the first electrode layer in wide viewing angle mode
Voltage difference between 33 and the second electrode lay 35 is 8V~20V.
Remaining content of the present embodiment can join the explanation of above-mentioned first embodiment, and details are not described herein.
The above is only the preferred embodiment of the changeable liquid crystal display device in visual angle of the utility model, and
It is non-to impose any limitation on the present invention, although the utility model has been disclosed with preferred embodiment as above, simultaneously
It is non-to limit the utility model, any person skilled in the art is not departing from technical solutions of the utility model range
It is interior, when the technology contents using the disclosure above make a little change or are modified to the equivalent embodiment of equivalent variations, but it is all
Without departing from the content of the technical scheme of the utility model, any letter made by the above technical examples according to the technical essence of the present invention
Single modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention.
Claims (10)
1. a kind of changeable liquid crystal display device (50) in visual angle, including array substrate (20) and the array substrate (20) are relatively
The color membrane substrates (30) of setting and the liquid crystal layer (40) between the array substrate (20) and the color membrane substrates (30), the coloured silk film
Substrate (30) is equipped with color blocking layer (31) and black matrix (32), which is characterized in that
The color membrane substrates (30) the side towards the liquid crystal layer (40) be additionally provided with first electrode layer (33), light modulation film layer (34) and
The second electrode lay (35), the light modulation film layer (34) are arranged between the first electrode layer (33) and the second electrode lay (35), should
It dims film layer (34) and is located at the black matrix (32) in the projection on the color membrane substrates (30) in the projection on the color membrane substrates (30)
Within the scope of；
At least one of the first electrode layer (33) and the second electrode lay (35) are viewing angle control electrode；In wide viewing angle mode
Under, the voltage with voltage difference is applied to the first electrode layer (33) and the second electrode lay (35)；It is right under narrow viewing angle mode
Apply viewing angle control voltage as the first electrode layer (33) of viewing angle control electrode and/or the second electrode lay (35).
2. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that the light modulation film layer
(34) material is polymer dispersed liquid crystals.
3. the changeable liquid crystal display device (50) in visual angle according to claim 2, which is characterized in that light modulation film layer (34)
Thickness be 0.5 μm~2 μm.
4. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that in wide viewing angle mode
When the first electrode layer (33) and the second electrode lay (35) between voltage difference be 8V~20V.
5. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that in narrow viewing angle mode
When the first electrode layer (33) and the second electrode lay (35) in one of do not apply voltage, wherein it is another as visual angle control
Electrode processed applies viewing angle control voltage.
6. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that in narrow viewing angle mode
When the first electrode layer (33) and the second electrode lay (35) apply identical voltage as viewing angle control voltage.
7. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that the first electrode layer
(33), the light modulation film layer (34) and the second electrode lay (35) pattern having the same.
8. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that the second electrode lay
(35) first electrode layer (33) is compared closer to the liquid crystal layer (40), which is to cover the color membrane substrates
(30) plane-shape electrode, the light modulation film layer (34) and the second electrode lay (35) pattern having the same.
9. the changeable liquid crystal display device (50) in visual angle according to claim 8, which is characterized in that in wide viewing angle mode
When to be applied to the voltage of the first electrode layer (33) be 0V, the voltage for being applied to the second electrode lay (35) is positivity greater than 0V
Voltage.
10. the changeable liquid crystal display device (50) in visual angle according to claim 1, which is characterized in that the array substrate
(20) public electrode (25) are equipped with；
The liquid crystal layer (40) uses positive liquid crystal molecules, under wide viewing angle mode, applies reference voltage to the public electrode (25),
And make the voltage difference between the public electrode (25) and the viewing angle control electrode less than the first preset value；
Under narrow viewing angle mode, apply reference voltage to the public electrode (25), applies the opposite base to the viewing angle control electrode
Quasi- voltage has the viewing angle control voltage of higher magnitude, makes the voltage difference between the public electrode (25) and the viewing angle control electrode
Greater than the second preset value；
Wherein, which is greater than or equal to first preset value.
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| CN201821268203.9U CN208705608U (en) | 2018-08-07 | 2018-08-07 | The changeable liquid crystal display device in visual angle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821268203.9U CN208705608U (en) | 2018-08-07 | 2018-08-07 | The changeable liquid crystal display device in visual angle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110262098A (en) * | 2019-07-15 | 2019-09-20 | 昆山龙腾光电有限公司 | Liquid crystal display device and driving method |
| CN110534069A (en) * | 2019-08-01 | 2019-12-03 | 昆山龙腾光电股份有限公司 | Display driving circuit, display driving method, and liquid crystal display device |
| CN112540474A (en) * | 2020-12-21 | 2021-03-23 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles |
| TWI733480B (en) * | 2020-06-03 | 2021-07-11 | 友達光電股份有限公司 | Display apparatus |
| CN114280826A (en) * | 2021-12-30 | 2022-04-05 | Oppo广东移动通信有限公司 | Liquid crystal display panel, display screen, electronic equipment and control method |
-
2018
- 2018-08-07 CN CN201821268203.9U patent/CN208705608U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110262098A (en) * | 2019-07-15 | 2019-09-20 | 昆山龙腾光电有限公司 | Liquid crystal display device and driving method |
| CN110262098B (en) * | 2019-07-15 | 2022-02-15 | 昆山龙腾光电股份有限公司 | Liquid crystal display device and driving method |
| CN110534069A (en) * | 2019-08-01 | 2019-12-03 | 昆山龙腾光电股份有限公司 | Display driving circuit, display driving method, and liquid crystal display device |
| CN110534069B (en) * | 2019-08-01 | 2021-09-14 | 昆山龙腾光电股份有限公司 | Display driving circuit, display driving method, and liquid crystal display device |
| TWI733480B (en) * | 2020-06-03 | 2021-07-11 | 友達光電股份有限公司 | Display apparatus |
| CN112540474A (en) * | 2020-12-21 | 2021-03-23 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles |
| CN114280826A (en) * | 2021-12-30 | 2022-04-05 | Oppo广东移动通信有限公司 | Liquid crystal display panel, display screen, electronic equipment and control method |
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