CN103616787B - Liquid crystal lens and stereo display device with same - Google Patents
Liquid crystal lens and stereo display device with same Download PDFInfo
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- CN103616787B CN103616787B CN201310648756.2A CN201310648756A CN103616787B CN 103616787 B CN103616787 B CN 103616787B CN 201310648756 A CN201310648756 A CN 201310648756A CN 103616787 B CN103616787 B CN 103616787B
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Abstract
The invention discloses a liquid crystal lens and a stereo display device with the liquid crystal lens. A first dielectric layer comprises an odd number of strip-shaped dielectric blocks which are sequentially arranged in the X direction and extend in the Y direction in parallel. The widths of the strip-shaped dielectric blocks are the same and are sequentially marked as d11, d12, d13,..., d18, d1n, electric conduction coefficients of the strip-shaped dielectric blocks are distributed symmetrical to the strip-shaped dielectric block in the width of d1((n+1)/2), the electric conduction coefficient of the strip-shaped dielectric block in the width of d1((n+1)/2) is the smallest, and the electric conduction coefficient of the strip-shaped dielectric block in the width of d11 and the electric conduction coefficient of the strip-shaped dielectric block in the width of d1n are the largest and the same, in other words, the electric conduction coefficients of lens units gradually decrease from the edge of the lens to the center of the lens. An electric field which is distributed in a left and right symmetrical mode is formed in each lens unit and gradually changes from the edge of the lens to the center of the lens, and therefore the overall refractive index of the liquid crystal layer gradually changes, the effect similar to that of convex lens focusing is achieved, and the liquid crystal lens can be widely applied to naked eye 3D stereo display and can be freely switched between 2D and 3D.
Description
Technical field
The present invention relates to a kind of liquid crystal lens, more particularly to a kind of liquid crystal lens and the stereo display using the lens
Device.
Background technology
The 3 d display device of Auto-stereo display is realized using liquid crystal lens, is mainly used in liquid crystal layer both sides
Positive and negative electrode is respectively provided with two plate bases, and applies driving voltage of different sizes on Different electrodes, so as in two chip bases
The vertical electric field with varying strength is formed between plate, varifocal liquid crystal lens is formed to drive Liquid Crystal Molecules Alignment.Therefore, only
Need to control the voltage's distribiuting in respective electrode, the index distribution of liquid crystal lens will change accordingly, so as to go out pixel
The distribution for penetrating light is controlled, and realizes Auto-stereo display and 2D/3D free switchings.
As shown in figure 1,100 is a kind of common liquid crystal lens array structural representation, it contains multiple liquid crystal lens lists
Unit such as L1 and L2 etc.（Two lens units are depicted in figure only）, each lens unit such as L1 and L2 etc. have identical structure.
Concretely, liquid crystal lens array 100 includes first substrate 101 and second substrate 102, first substrate 101 and second substrate 102
Just to setting, the generally transparent material such as glass.First electrode 103, first electrode 103 1 are provided with first substrate 101
As for transparent conductive material such as ITO or IZO etc., second electrode 107, second electrode 107 are provided with second substrate 102
For transparent conductive material such as ITO or IZO.Within each lens unit, by taking L1 as an example, first electrode 103 includes S11,
Multiple strip electrodes for separating at certain intervals and be arrangeding in parallel such as S12, S13 ..., S18, S19, the quantity of electrode are generally strange
Number（Illustrate by taking nine electrodes as an example below）, the width of each strip electrode is respectively W（S11）, W（S12）, W
（S13）..., W（S18）, W（S19）Deng, it is however generally that strip electrode possesses identical width, i.e. W（S11）=W（S12）=W
（S13）=...=W（S18）=W（S19）.In two liquid crystal lens units as between L1 and L2, same strip electrode S19 is shared
（S21）.In addition, liquid crystal lens array 100 also includes the dielectric material 104 being arranged in first electrode 103, is arranged on Jie
The first alignment film 105 and the second alignment film 108 being arranged in second electrode 107 on electric material 104 is used to control liquid crystal
The orientation of molecule, liquid crystal material 106 are encapsulated between first substrate 101 and second substrate 102.Although being not drawn in Fig. 1,
Liquid crystal lens array 100 also includes spacer for the periphery sealed plastic box of liquid crystal material encapsulation and thick for controlling liquid crystal cell
（Spacer）Deng.
As shown in Fig. 2 when needing to carry out 3D displays, in each strip electrode such as S11, the S12 of first electrode 103,
S13 ..., S18, S19（By taking lens unit L1 as an example）Apply symmetrical voltage Deng on, second electrode 107 is used as public power
Extremely voltage is set to zero, with positivity liquid crystal material（That is △ ε=ε ∥-ε ⊥>0, Jie of the ε ∥ for long axis of liquid crystal molecule direction in formula
Electrostrictive coefficient, dielectric coefficients of the ε ⊥ for liquid crystal molecule short-axis direction.）As a example by, V can be made（S11）=V（S19）>V（S12）=V
（S18）>V（S13）=V（S17）>V（S14）=V（S16）>V（S15）, i.e., apply on the central electrode S15 of liquid crystal lens unit
Voltage it is minimum, and the voltage applied on the edge electrodes S11 of lens unit, S19 is maximum, from lens centre to rims of the lens
Voltage on each strip electrode is distributed with certain gradient.Due to the voltage that applies on lens unit edge electrodes most
Greatly, the liquid crystal molecule of edge electrodes S11, S19 position is substantially presented vertical direction distribution, i.e. long axis of liquid crystal molecule and electric field side
To parallel；And it is less the closer to the center voltage of lens unit, therefore liquid crystal molecule can be increasingly prone to horizontal direction arrangement, i.e.,
Long axis of liquid crystal molecule is vertical with direction of an electric field.In each lens unit, as voltage symmetry is distributed, liquid crystal material is with electricity
The change of field intensity is presented the gradual change of refractive index, thus whole liquid crystal lens permutation possesses preferable optical imaging properties.2D shows
When showing, in the such as S11 of first electrode 103, S12, S13 ..., S18, S19（By taking lens unit L1 as an example）Deng and second electrode 107
Upper applied voltage is disposed as between zero or both without pressure reduction, then liquid crystal molecule 106 is not affected by electric field, still keeps liquid crystal
The initial orientation of molecule（As shown in Figure 1）, now liquid crystal lens unit incident light direction is not modulated.
When 3D shows, needs apply symmetrical voltage, such as V on each strip electrode（S11）=V（S19）>V（S12）=
V（S18）>V（S13）=V（S17）>V（S14）=V（S16）>V（S15）, number of electrodes when designing with each liquid crystal lens unit
Increase, it is desirable to provide different driving voltage amount be consequently increased, cause drive circuit and liquid crystal lens array periphery electricity
Road design becomes complicated.It is by taking each lens unit as an example, it is assumed that have N number of strip electrode in each lens unit, left when providing
During right symmetrical driving voltage, at least need to provide（N+1）/ 2 different driving voltages.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of liquid crystal lens and standing using the lens
Body display device, can simplify the design of liquid crystal lens peripheral circuit and drive circuit.
The present invention is achieved by the following technical solutions, and the present invention includes multiple liquid crystal lens units, each lens list
Unit include first substrate, first electrode, the first dielectric layer, the first alignment film, second substrate, second electrode, the second alignment film and
Liquid crystal material, the first electrode are arranged on first substrate, and second electrode is arranged on second substrate, and the first dielectric layer is arranged
In first electrode, the first alignment film is arranged on the first dielectric layer, and the second alignment film is arranged in second electrode, liquid crystal material
It is encapsulated between the first alignment film and the second alignment film, repetition period property repeats to constitute liquid crystal multiple lens units in the x direction
Lens arra, first dielectric layer include that odd number is set gradually and extended and parallel bar shaped dielectric along Y-direction in X-direction
Block, the width of the bar shaped dielectric block is identical and is labeled as d11, d12, d13 ..., d18, d1n, the bar shaped dielectric block successively
Electrical conductivity along d1（（n+1）/2）It is symmetrical, d1（（n+1）/2）Electrical conductivity it is minimum, the electrical conductivity of d11 and d1n
Maximum and equal, i.e., the electrical conductivity of lens unit is gradually lowered to center by the edge of lens.
The first electrode and second electrode are the face electrode for not having special pattern, are transparent conductive material.
Under the 3D display patterns, second electrode is set to 0V for common electrode, and the driving voltage of first electrode is amplitude
Frequency for V fix and positive-negative polarity checker square wave（+ V ,-V ,+V ,-V ... ...）.
Transparent insulating layer is provided between first dielectric layer and the first alignment film.
The liquid crystal lens array also includes the periphery sealed plastic box of liquid crystal material encapsulation and for controlling liquid crystal cell thickness
Spacer.
A kind of 3 d display device using the liquid crystal lens.
A kind of preparation method of described liquid crystal lens, comprises the following steps：
（1）Sputtering on the first substrate forms first electrode；
（2）Prepare the first dielectric layer with maximum dielectric coefficient；
（3）Coating photoresistance or photoresist；
（4）It is exposed, develop, etches；
（5）Photoresistance or stripping photoresist are removed, the bar shaped dielectric block for retaining two ends is obtained with maximum dielectric coefficient
Bar shaped dielectric block；
（6）It is repeated in step（2）~（5）, obtain the second dielectric layer that dielectric coefficient is gradually reduced from edge to center.
The step（2）The middle method for preparing the first dielectric layer is plasma reinforced chemical vapour deposition method PECVD or rotation
Apply.
One of optimal way as the present invention, the photoresist are positive photoresist.
One of optimal way as the present invention, the step（4）Middle employing light shield is exposed as template.
The present invention has advantages below compared to existing technology：It is electric that the liquid crystal lens of the present invention form first without the need for special pattern
Pole or second electrode, the first electrode in whole liquid crystal lens are formed using face electrode with second electrode, by liquid crystal
Formed in each liquid crystal lens unit of lens arra it is multiple with different dielectric coefficient and symmetrical distribution dielectric layer,
So as to the electric field of symmetrical distribution is formed in each lens unit, and present gradually from rims of the lens to lens centre electric field
Change trend, causes the gradual change of liquid crystal layer overall refractive index, realizes the effect of similar convex lenss optically focused, can be widely applied to bore hole
3D stereo displays, while the free switching between 2D and 3D.When 2D shows, the major optical ginseng of liquid crystal lens 3 d display device
Number such as brightness, contrast and resolution etc. is substantially unaffected, liquid crystal lens 3 d display device and liquid crystal slit when 3D shows
Stereo display device of optical grating compares the advantage for still possessing high brightness.
Description of the drawings
Fig. 1 is the structural representation of existing common liquid crystal lens；
Fig. 2 is liquid crystal molecule arrangement schematic diagrams of the Fig. 1 under 3D display situations；
Fig. 3 is the sectional view of embodiment 1；
Fig. 4 is in Fig. 3 10134 top view；
Fig. 5 is the distribution schematic diagram of dielectric coefficient in liquid crystal lens unit；
Fig. 6 is each capacitances in series model of embodiment 1；
Fig. 7 is liquid crystal lens unit internal electric field Gradient distribution schematic diagram；
Fig. 8 is the liquid crystal molecular orientation emulation schematic diagram of the bar shaped dielectric block with different dielectric coefficient；
Fig. 9 is refractive index distribution schematic diagram in liquid crystal lens unit；
Figure 10 is the flow chart of preparation method of the present invention；
Figure 11 is the structural representation of embodiment 2；
Figure 12 is schematic diagram of the liquid crystal lens 3 d display device under 3D display patterns；
Figure 13 is schematic diagram of the liquid crystal lens 3 d display device under 2D display patterns.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements
Example.
Embodiment 1
As shown in figure 3, the liquid crystal lens array 1000 of the present embodiment contains multiple liquid crystal lens units（Only depict in figure
Two lens units L1 and L2）, each lens unit such as L1 and L2 etc. have identical structure.Liquid crystal lens array 1000 is included
First substrate 1001 and second substrate 1002, with second substrate 1002 just to arranging, generally glass etc. is saturating for first substrate 1001
Bright material.First electrode 1003 is provided with first substrate 1001, first electrode 1003 is face electrode, without special pattern, one
As for transparent conductive material such as ITO or IZO etc..The first dielectric layer 1004 is provided with first electrode 1003, first
The first alignment film 1005, the first alignment film 1005 generally organic material such as polyimides are provided with dielectric layer 1004.The
Two electrodes 1006 are arranged on second substrate 1002 and towards the side of first electrode 1003, second electrode 1006 is used as public
Electrode is also face electrode, without special pattern, generally transparent conductive material such as ITO or IZO etc..Second alignment film 1007 is arranged
On second electrode 1006, the second alignment film 1007 generally organic material such as polyimides.Liquid crystal material 1008 is packed
Between first substrate 1001 and second substrate 1002, the initial orientation of liquid crystal molecule is matched somebody with somebody by liquid crystal material self character and first
Determine to film 1005 and 1007 frictional direction of the second alignment film.In addition, liquid crystal lens array 1000 is also included for liquid crystal
The periphery sealed plastic box of material package and the spacer thick for controlling liquid crystal cell（Spacer）Deng.Just to describe, below by
One substrate 1001, first electrode 1003 and the first dielectric layer 1004 are represented with 10134 as an entirety.
Fig. 4 is 10134 top views during liquid crystal lens first are implemented.First dielectric layer 1004 be arranged on first electrode 1003 it
On.Within each lens unit, by taking L1 as an example, the first dielectric layer 1004 is comprising by d11, d12, d13 ..., d18, d19 etc.
Odd number is gapless successively in X-direction and the bar shaped dielectric block that extends along Y-direction and be arranged in parallel, the quantity of bar shaped dielectric block
Generally odd number, is illustrated by taking nine bar shaped dielectric blocks as an example below, and each bar shaped dielectric block is respectively in the width of X-direction
W（d11）, W（d12）, W（d13）..., W（d18）, W（d19）Deng each bar shaped dielectric block can be with equal in the width of X-direction
Or, it typically is provided with identical width, i.e. W（d11）=W（d12）=W（d13）=…=W（d18）=W（d19）.In two liquid crystal
Lens unit shares same bar shaped dielectric block d19 as between L1 and L2（d21）.
As shown in figure 5, within same liquid crystal lens unit, by taking L1 as an example, each bar shaped dielectric block d11, d12,
, with regard to the symmetrical dielectric coefficient in liquid crystal lens center, such as bar shaped dielectric block d11 and d19 has for d13 ..., d18, d19 etc.
Standby identical dielectric coefficient ε 1, bar shaped dielectric block d12 and d18 possesses identical dielectric coefficient ε 2, bar shaped dielectric block d13 and d17
Possess identical dielectric coefficient ε 3, bar shaped dielectric block d14 and d16 and possess identical dielectric coefficient ε 4, Jie of bar shaped dielectric block d15
Electrostrictive coefficient is ε 5.
Under 3D display patterns, second electrode 1006 is set to 0V, the driving of first electrode 1003 as common electrode voltage
Voltage adopts frequency to fix, positive-negative polarity checker and amplitude for V square wave（+ V ,-V ,+V ,-V ... ...）.If the first orientation
The thickness of film 1005 and the second alignment film 1007 is T, and dielectric coefficient is εOL.The thickness of the first dielectric layer 1004 be He, dielectric
Coefficient is ε.It is d1 that liquid crystal lens box is thick, and 1008 effective permittivity of liquid crystal material is εLC.In the case where exchange drives, by the first dielectric
Layer 1004, the first alignment film 1005, the capacitances in series of 1007 each self-forming of liquid crystal layer 1008 and the second alignment film, as shown in fig. 6,
Each parallel plate capacitor is represented by：
The electric capacity C that first alignment film 1005 is formed1005=ε0εOLS/T……（1）；
The electric capacity C that second alignment film 1007 is formed1007=ε0εOLS/T, i.e. C1005=C1007……（2）；
The electric capacity C that first dielectric layer 1004 is formede=ε0εS/He……（3）；
The electric capacity C that liquid crystal layer 1008 is formedLC=ε0εLCS/d1……（4）；
Formula（1）~（4）In, S represent first electrode 1003 and second electrode 1006 just to area, due to the first orientation
The thickness T of film 1005 and the second alignment film 1007 is about one of percentage of 1008 thickness d 1 of liquid crystal layer, i.e. T=1/100*d1, the
First, the second alignment film dielectric coefficient εOLWith liquid crystal layer effective permittivity εLCQuite（That is εOL≈εLC）In the case of, CLC=ε0εLCS/d1=ε0εOLS/（100T）=ε0εOLS/T*（1/100）=C1005/ 100, i.e., electric capacity C is formed by the first or second alignment film1005,
C1007About liquid crystal capacitance CLC100 times（C1005=C1007=100CLC）.If the electric capacity both sides electricity that the first alignment film 1005 is formed
Pressure reduction is V1005, the electric capacity both sides voltage difference that the second alignment film 1007 is formed is V1007, the pressure reduction of 1008 both sides of liquid crystal layer is VLC,
1004 both sides pressure reduction of dielectric layer is Ve, according to the principle and Q=CV of the electricity Q such as each series capacitance,
V=V1005+V1007+VLC+Ve=Q/C1005+Q/C1007+Q/CLC+Q/Ce≈Q/CLC+Q/Ce=VLC+Ve……（5）
I.e. in the case where exchange drives, the voltage almost all applied in first electrode 1003 and second electrode 1006 is by liquid crystal layer
The 1008 electric capacity C for being formedLCAnd the electric capacity C that the first dielectric layer 1004 is formedeShare.
VLC/Ve=（Q/CLC）/（Q/Ce）=（d1/He）*（ε/εLC）……（6）
Distribute voltage difference V in 1008 both sides of liquid crystal layerLCWith distribution 1004 both sides of the first dielectric layer pressure reduction VeWith
Ratio d1/He and ε/εLCIt is directly related.
As shown in fig. 7, in each lens unit, if the dielectric coefficient ε 1 of bar shaped dielectric block d11 and d19 is maximum, bar shaped
The dielectric coefficient ε 2 of dielectric block d12 and d18 takes second place ... ..., and the dielectric coefficient ε 5 of bar shaped dielectric block d15 is minimum, i.e. ε 1>ε2>ε3>
ε4>ε5。Ve=Q/Ce=QHe/（ε0εS）Understand, at lens unit edge such as bar shaped dielectric block d11 and d19, due to dielectric coefficient ε=
ε 1 is maximum, thus 1004 both sides of dielectric layer have minimum voltage difference Ve, due to V=VLC+Ve, therefore VLCIt is maximum；In contrast, exist
At the such as bar shaped dielectric block d15 of lens unit center, as dielectric coefficient ε=ε 5 is minimum, thus 1004 both sides of dielectric layer have
Maximum voltage difference Ve, due to V=VLC+Ve, therefore VLCIt is minimum；In other regions of lens unit, with dielectric coefficient ε gradually
Change, the pressure reduction gradual change successively of liquid crystal layer both sides is gradually lowered from the edge of liquid crystal lens unit to center voltage, such as seven institute of figure
Show, with the size for representing liquid crystal layer both sides pressure reduction of the length image of vertical direction double-head arrow in figure.
As shown in figure 8, when the voltage swing being applied in first electrode 1003 and second electrode 1006 is constant, for tool
There are the bar shaped dielectric block such as d11 of different dielectric coefficient ε, d12 ..., d18, d19 etc., on diverse location in liquid crystal lens unit
1008 both sides of liquid crystal layer there are different voltages, liquid crystal molecule is presented different orientations.
As voltage's distribiuting is presented becoming of tapering into from rims of the lens to lens centre in each liquid crystal lens unit
Gesture, under electric field action, liquid crystal molecule carries out orientations according to different angles, as shown in figure 9, reflecting each lens unit
Interior refractive index distribution situation, due to the pressure reduction for having maximum in lens unit edge liquid crystal layer both sides, positivity liquid crystal material molecules are long
Axle tends to parallel with direction of an electric field, i.e., parallel to Y-axis, refractive index is no.There is minimum in lens unit center liquid crystal layer both sides
Pressure reduction, still in initial orientation position, i.e., parallel to X-axis, refractive index is ne to liquid crystal material molecules major axis.Lens unit its
His position, effective refractive index neff can be expressed asWherein θ is liquid crystal molecule
The angle of major axis and Z-direction, in any one state, ne>neff>no.
As shown in Figure 10, by taking lens unit L1 and L2 as an example, illustrate the first dielectric layer 1004 each bar shaped dielectric block such as
The forming process of d11, d12, d13 ..., d18, d19 etc..In figure, light shield is 1010, and photoresistance or photoresist are 1009, first the
First electrode 1003 is formed by sputtering on one substrate 1001（II in Figure 10）, then PECVD is formed with dielectric system successively
Number 1 first dielectric layers 1004 of ε（III in Figure 10）, coating photoresistance or photoresist, the present embodiment employs positive photoresist（Figure 10
Middle IV）, be exposed for template using light shield（V in Figure 10）, development（VI in Figure 10）, etching（VII in Figure 10）, removing photoresistance or
Stripping photoresist can obtain the bar shaped dielectric block such as d11 with dielectric coefficient ε 1, d19/d21, d29 etc.（A in Figure 10）, weight
Each technique of III~A, can obtain the bar shaped dielectric block such as d12 with dielectric coefficient ε 2, d18, d22, d28 successively again（Figure 10
Middle B）；Bar shaped dielectric block such as d13 with dielectric coefficient ε 3, d17, d23, d27 etc.（C in Figure 10）；With dielectric coefficient ε's 4
Bar shaped dielectric block such as d14, d16, d24, d26 etc.（D in Figure 10）；Bar shaped dielectric block such as d15 with dielectric coefficient ε 5, d25 etc.
（E in Figure 10）.
Embodiment 2
As shown in figure 11, the present embodiment is provided with a transparent insulating layer 2011 on the first dielectric layer 2004, other
Embodiment is identical with embodiment 1, and preferred transparent insulating layer 2011 should have high-dielectric coefficient to reduce the pressure in its both sides
Drop（By formula（5）Understand, for capacitances in series, it is less that electric capacity gets more greatly voltage）, so as to not increase the size of driving voltage.
As in liquid crystal lens unit, regional needs accurately control to be applied to the voltage V of 2008 both sides of liquid crystal layerLC, according to V=
VLC+Ve, that is, need accurately to control V on dielectric layer 2004eSize, due to Ve=Q/Ce=QHe/ε0ε S, work as VeWhen size determines, can
With each bar shaped dielectric block dielectric coefficient ε and bar shaped dielectric block thickness two parameter regulations of He by adjusting dielectric layer 2004
（Also can be by formula（6）Learn）, according to the dielectric coefficient difference of selected material, each bar shaped dielectric block thickness He just may not be used
Together.Therefore, transparent insulating layer 2011 primarily serves 2004 upper surface of planarized dielectric layer（I.e. towards the one of second substrate 2002
Face）Effect, be easy to 2005 surface of the first alignment film flat to be supplied to 2008 preferable initial orientation of liquid crystal molecule.
As shown in Figure 12 and Figure 13, Figure 12 and Figure 13 are liquid crystal lens 3 d display devices under 3D with 2D display patterns
Schematic diagram.Under 2D display patterns, liquid crystal lens are not modulated to original image, whole liquid crystal lens 3 d display device it is bright
The key property parameter such as degree, resolution is substantially unaffected；Under 3D display patterns, due to liquid crystal in each liquid crystal lens unit
The work(of a similar convex lenss is played in the symmetrical distribution of actual driving voltage of layer both sides, each liquid crystal lens unit
Can, realize that right and left eyes image is separated, so as to watch stereoeffect.
Claims (9)
1. a kind of liquid crystal lens, including multiple liquid crystal lens units, each lens unit include first substrate, first electrode,
One dielectric layer, the first alignment film, second substrate, second electrode, the second alignment film and liquid crystal material, the first electrode are arranged at
On first substrate, second electrode is arranged on second substrate, and the first dielectric layer is arranged in first electrode, and the first alignment film is arranged
On the first dielectric layer, the second alignment film is arranged in second electrode, and liquid crystal material is encapsulated in the first alignment film and the second orientation
Between film, repetition period property repeats to constitute liquid crystal lens array multiple lens units in the x direction, it is characterised in that described the
One dielectric layer includes that odd number is set gradually and extended and parallel bar shaped dielectric block along Y-direction in X-direction, the bar shaped dielectric
The width of block is identical and is labeled as d11 successively, d12, d13 ..., d18, d1n, and the electrical conductivity of the bar shaped dielectric block is along d1
((n+1)/2) are symmetrical, and the electrical conductivity of d1 ((n+1)/2) is minimum, and the electrical conductivity of d11 and d1n is maximum and equal, i.e., thoroughly
The electrical conductivity of mirror unit is gradually lowered to center by the edge of lens.
2. liquid crystal lens according to claim 1, it is characterised in that the first electrode and second electrode are not special
The face electrode of pattern, is transparent conductive material.
3. liquid crystal lens according to claim 1, it is characterised in that set between first dielectric layer and the first alignment film
There is transparent insulating layer.
4. liquid crystal lens according to claim 1, it is characterised in that the liquid crystal lens array is also sealed including liquid crystal material
The periphery sealed plastic box of dress and the spacer thick for controlling liquid crystal cell.
5. the 3 d display device of liquid crystal lens described in a kind of any one of application Claims 1 to 4.
6. a kind of preparation method of liquid crystal lens as claimed in claim 1, it is characterised in that comprise the following steps：
(1) sputtering forms first electrode on the first substrate；
(2) prepare the first dielectric layer with maximum dielectric coefficient；
(3) photoresistance or photoresist are coated；
(4) it is exposed, develop, etches；
(5) photoresistance or stripping photoresist are removed, the bar shaped dielectric block for retaining two ends obtains the bar shaped with maximum dielectric coefficient
Dielectric block；
(6) step (2)~(5) are repeated in, the second dielectric layer that dielectric coefficient is gradually reduced to center from edge is obtained.
7. the preparation method of a kind of liquid crystal lens according to claim 6, it is characterised in that prepare in the step (2)
The method of the first dielectric layer is plasma reinforced chemical vapour deposition method PECVD or spin coating.
8. the preparation method of a kind of liquid crystal lens according to claim 6, it is characterised in that the photoresist is positivity light
Photoresist.
9. the preparation method of a kind of liquid crystal lens according to claim 6, it is characterised in that adopt in the step (4)
Light shield is exposed as template.
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| CN105467602A (en) * | 2015-12-07 | 2016-04-06 | 广东未来科技有限公司 | A three-dimensional display apparatus |
| CN106842712A (en) * | 2017-04-01 | 2017-06-13 | 深圳市华星光电技术有限公司 | Bore hole 3D liquid crystal display panels and bore hole 3D liquid crystal display devices |
| CN108572473B (en) * | 2018-04-10 | 2019-09-03 | 四川大学 | A kind of double dielectric layer blue phase liquid crystal lens arrays |
| CN108828849A (en) * | 2018-06-05 | 2018-11-16 | 中山大学 | The preparation method of flexible liquid crystal lens and its resistance gradual change electrode |
| CN108761884B (en) * | 2018-08-03 | 2019-12-10 | 北京航空航天大学 | Blue phase liquid crystal lens with large focusing range |
| JP7200565B2 (en) * | 2018-09-21 | 2023-01-10 | 凸版印刷株式会社 | dimmer |
| CN109164650B (en) * | 2018-09-25 | 2019-09-03 | 北京航空航天大学 | A kind of side's annular electrode nested blue phase liquid crystal lens array |
| CN110297374A (en) * | 2019-07-01 | 2019-10-01 | 京东方科技集团股份有限公司 | A kind of liquid crystal lens and display device |
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| CN203643727U (en) * | 2013-12-04 | 2014-06-11 | 中航华东光电有限公司 | Liquid crystal lens and three-dimensional display device |
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| JP2009528558A (en) * | 2006-03-03 | 2009-08-06 | ユニヴェルシテ ラヴァル | Method and apparatus for generating spatially modulated electric fields and electro-optical tuning using liquid crystals |
| CN102830568B (en) * | 2011-06-15 | 2016-08-17 | 三星显示有限公司 | Liquid crystal lens and include the display device of this liquid crystal lens |
| CN103149767B (en) * | 2013-03-01 | 2016-05-04 | 福州大学 | A kind of liquid crystal lens and the naked-eye stereoscopic display device that comprises this liquid crystal lens |
| CN103278993B (en) * | 2013-05-06 | 2015-08-05 | 中航华东光电有限公司 | Liquid crystal lens and driving method, 3 d display device |
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| CN203643727U (en) * | 2013-12-04 | 2014-06-11 | 中航华东光电有限公司 | Liquid crystal lens and three-dimensional display device |
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