CN103616787A - 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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- CN103616787A CN103616787A CN201310648756.2A CN201310648756A CN103616787A CN 103616787 A CN103616787 A CN 103616787A CN 201310648756 A CN201310648756 A CN 201310648756A CN 103616787 A CN103616787 A CN 103616787A
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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, in particular a kind of liquid crystal lens and apply the 3 d display device of these lens.
Background technology
Adopt liquid crystal lens to realize the 3 d display device that free stereo shows, mainly to utilize, on two plate bases of liquid crystal layer both sides, positive and negative electrode is set respectively, and on Different electrodes, apply the driving voltage varying in size, thereby between two plate bases, form the vertical electric field with varying strength, to drive Liquid Crystal Molecules Alignment, form varifocal liquid crystal lens.Therefore, the voltage that only need to control in respective electrode distributes, and the index distribution of liquid crystal lens will change accordingly, thereby the distribution of pixel emergent light is controlled, and realizes free stereo demonstration and 2D/3D and freely switches.
As shown in Figure 1,100 is a kind of common liquid crystal lens array structural representation, and it contains a plurality of liquid crystal lens unit as (only having drawn two lens units in figure) such as L1 and L2, and each lens unit has identical structure with L2 etc. as L1.Concretely, liquid crystal lens array 100 comprises first substrate 101 and second substrate 102, and first substrate 101 over against setting, is generally the transparent materials such as glass with second substrate 102.On first substrate 101, be provided with the first electrode 103, the first electrodes 103 and be generally transparent conductive material as ITO or IZO etc., on second substrate 102, being provided with the second electrode 107, the second electrodes 107 is also that transparent conductive material is as ITO or IZO.Within each lens unit, take L1 as example, the first electrode 103 comprises S11, S12, S13 ..., S18, a plurality of strip electrodes that separate at certain intervals and be arranged in parallel such as S19, the quantity of electrode is generally odd number (take below nine electrodes describe for example), and the width of each strip electrode is respectively W(S11), W(S12), W(S13), ..., W(S18), W(S19) etc., generally speaking strip electrode possesses identical width, i.e. W(S11)=W(S12)=W(S13)=...=W(S18)=W(S19).Between two liquid crystal lens unit are as L1 and L2, share same strip electrode S19(S21).In addition, liquid crystal lens array 100 also comprises the dielectric material 104 being arranged on the first electrode 103, be arranged on the first alignment film 105 on dielectric material 104 and be arranged on the second alignment film 108 on the second electrode 107 for controlling the orientation of liquid crystal molecule, liquid crystal material 106 is encapsulated between first substrate 101 and second substrate 102.Although do not draw in Fig. 1, liquid crystal lens array 100 also comprises for the periphery sealed plastic box of liquid crystal material encapsulation and for controlling the spacer that liquid crystal cell is thick (spacer) etc.
As shown in Figure 2, when needs carry out 3D while showing, at each strip electrode of the first electrode 103 as S11, S12, S13,, S18, S19(be take lens unit L1 as example) etc. on apply symmetrical voltage, the second electrode 107 as public power extremely voltage be set to zero, with positivity liquid crystal material, (be △ ε=ε ∥-ε ⊥ >0, in formula, ε ∥ is the dielectric coefficient of long axis of liquid crystal molecule direction, and ε ⊥ is the dielectric coefficient of liquid crystal molecule short-axis direction.) be example, can make V(S11)=V(S19) >V(S12)=V(S18) >V(S13)=V(S17) >V(S14)=V(S16) >V(S15), the voltage applying on the central electrode S15 of liquid crystal lens unit is minimum, and at the edge electrodes S11 of lens unit, the voltage applying on S19 is maximum, and the voltage from lens center to rims of the lens on each strip electrode distributes with certain gradient.Because the voltage applying on lens unit edge electrodes is maximum, edge electrodes S11, the liquid crystal molecule of S19 position substantially presents vertical direction and distributes, and long axis of liquid crystal molecule is parallel with direction of an electric field; And less the closer to the center voltage of lens unit, so liquid crystal molecule can tend to gradually horizontal direction and arrange, long axis of liquid crystal molecule is vertical with direction of an electric field.In each lens unit, because voltage symmetry distributes, liquid crystal material is along with the variation of electric field intensity presents the gradual change of refractive index, thereby whole liquid crystal lens permutation possesses good optical imagery characteristic.When 2D shows, at the first electrode 103 as S11, S12, S13 ..., S18, S19(be take lens unit L1 as example) etc. and the second electrode 107 on apply voltage and be all set to zero or between the two without pressure reduction, liquid crystal molecule 106 is not subject to the impact of electric field, still keeps the initial orientation (as shown in Figure 1) of liquid crystal molecule, and now liquid crystal lens unit is not modulated incident light direction.
When 3D shows, need on each strip electrode, apply symmetrical voltage, as V(S11)=V(S19) >V(S12)=V(S18) >V(S13)=V(S17) >V(S14)=V(S16) >V(S15), during along with each liquid crystal lens Unit Design, number of electrodes increases, the different driving voltage quantity that need to provide also increases thereupon, causes driving circuit and the design of liquid crystal lens array peripheral circuit to become complicated.Take each lens unit as example, and suppose has N strip electrode in each lens unit, when symmetrical driving voltage is provided, at least needs to provide (N+1)/2 different driving voltage.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of liquid crystal lens is provided and has applied the 3 d display device of these lens, can simplify the design of liquid crystal lens peripheral circuit and driving circuit.
The present invention is achieved by the following technical solutions, the present invention includes a plurality of liquid crystal lens unit, each lens unit comprises first substrate, the first electrode, the first dielectric layer, the first alignment film, second substrate, the second electrode, the second alignment film and liquid crystal material, described the first electrode is arranged on first substrate, the second electrode is arranged on second substrate, the first dielectric layer is arranged on the first electrode, the first alignment film is arranged on the first dielectric layer, the second alignment film is arranged on the second electrode, liquid crystal material is encapsulated between the first alignment film and the second alignment film, a plurality of lens units repetition period property in x direction repeats to form liquid crystal lens array, described the first dielectric layer comprises that odd number sets gradually and extends and parallel bar shaped dielectric block along Y-direction at directions X, the width of described bar shaped dielectric block is identical and be labeled as successively d11, d12, d13, d18, d1n, the electrical conductivity of described bar shaped dielectric block is along d1((n+1)/2) symmetrical, d1((n+1)/2) electrical conductivity is minimum, the electrical conductivity of d11 and d1n is maximum and equal, the electrical conductivity that is lens unit is reduced to center gradually by the edge of lens.
Described the first electrode and the second electrode are the face electrode that there is no special pattern, are transparent conductive material.
Under described 3D display mode, the second electrode is that common electrode is set to 0V, the driving voltage of the first electrode be amplitude be the frequency of V fix and the square wave of positive-negative polarity checker (+V ,-V ,+V ,-V ...).
Between described the first dielectric layer and the first alignment film, be provided with transparent insulating layer.
Described liquid crystal lens array also comprises the periphery sealed plastic box of liquid crystal material encapsulation and for controlling the spacer that liquid crystal cell is thick.
A kind of 3 d display device of applying described liquid crystal lens.
A preparation method for described liquid crystal lens, comprises the following steps:
(1) on first substrate, sputter forms the first electrode;
(2) preparation has the first dielectric layer of maximum dielectric coefficient;
(3) apply photoresistance or photoresist;
(4) expose, development, etching;
(5) remove photoresistance or stripping photoresist, the bar shaped dielectric block that retains two ends obtains having the bar shaped dielectric block of maximum dielectric coefficient;
(6) repeating step (2)～(5) successively, obtain the second dielectric layer that dielectric coefficient is reduced to center gradually by edge.
In described step (2), the method for preparation the first dielectric layer is plasma reinforced chemical vapour deposition method PECVD or spin coating.
As one of optimal way of the present invention, described photoresist is positive photoresist.
As one of optimal way of the present invention, in described step (4), adopt light shield as mould board to explosure.
The present invention has the following advantages compared to existing technology: liquid crystal lens of the present invention forms the first electrode or the second electrode without special pattern, the first electrode in whole liquid crystal lens and the second electrode all adopt face electrode to form, by form a plurality of dielectric layers with different dielectric coefficient and symmetrical distribution in each liquid crystal lens unit of liquid crystal lens array, thereby in each lens unit, form the electric field of symmetrical distribution, and to lens center electric field, present gradual change trend from rims of the lens, cause the gradual change of liquid crystal layer overall refractive index, realize the effect of similar convex lens optically focused, can be widely used in bore hole 3D stereo display, between 2D and 3D, freely switch simultaneously.When 2D shows, the main optical parametric of liquid crystal lens 3 d display device is as substantially unaffected in brightness, contrast and resolution etc., and when 3D shows, liquid crystal lens 3 d display device compares with liquid crystal slit grating 3 d display device the advantage that still possesses high brightness.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing common liquid crystal lens;
Fig. 2 is the liquid crystal molecule of Fig. 1 under the 3D demonstration situation schematic diagram of arranging;
Fig. 3 is the cut-open view of embodiment 1;
Fig. 4 is 10134 vertical view in Fig. 3;
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 with the bar shaped dielectric block of different dielectric coefficient;
Fig. 9 is refractive index distribution schematic diagram in liquid crystal lens unit;
Figure 10 is preparation method's of the present invention process flow diagram;
Figure 11 is the structural representation of embodiment 2;
Figure 12 is the schematic diagram of liquid crystal lens 3 d display device under 3D display mode;
Figure 13 is the schematic diagram of liquid crystal lens 3 d display device under 2D display mode.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 3, the liquid crystal lens array 1000 of the present embodiment contains a plurality of liquid crystal lens unit (only having drawn two lens unit L1 and L2 in figure), and each lens unit has identical structure with L2 etc. as L1.Liquid crystal lens array 1000 comprises first substrate 1001 and second substrate 1002, and first substrate 1001 over against setting, is generally the transparent materials such as glass with second substrate 1002.On first substrate 1001, being provided with the first electrode 1003, the first electrodes 1003 is face electrode, without special pattern, is generally transparent conductive material as ITO or IZO etc.On the first electrode 1003, be provided with the first dielectric layer 1004, on the first dielectric layer 1004, be provided with the first alignment film 1005, the first alignment films 1005 and be generally the organic materials such as polyimide.The second electrode 1006 is arranged on second substrate 1002 and towards a side of the first electrode 1003, the second electrode 1006 is also face electrode as common electrode, without special pattern, is generally transparent conductive material as ITO or IZO etc.The second alignment film 1007 is arranged on the second electrode 1006, and the second alignment film 1007 is generally the organic materials such as polyimide.Liquid crystal material 1008 is encapsulated between first substrate 1001 and second substrate 1002, and the initial orientation of liquid crystal molecule is determined by liquid crystal material self character and the first alignment film 1005 and the second alignment film 1007 frictional directions.In addition, liquid crystal lens array 1000 also comprises for the periphery sealed plastic box of liquid crystal material encapsulation and for controlling the spacer that liquid crystal cell is thick (spacer) etc.For just describing, below first substrate 1001, the first electrode 1003 and the first dielectric layer 1004 are done as a whole with 10134 expressions.
Fig. 4 is 10134 vertical views during liquid crystal lens first is implemented.The first dielectric layer 1004 is arranged on the first electrode 1003.Within each lens unit, take L1 as example, the first dielectric layer 1004 comprises by d11, d12, d13, d18, the odd numbers such as d19 are at directions X successively bar shaped dielectric block gapless and that extend and be arranged in parallel along Y-direction, the quantity of bar shaped dielectric block is generally odd number, nine the bar shaped dielectric blocks of take below describe as example, each bar shaped dielectric block is respectively W(d11 at the width of directions X), W(d12), W(d13), ..., W(d18), W(d19) etc., each bar shaped dielectric block can not equate or not etc. at the width of directions X, generally possesses identical width, be W(d11)=W(d12)=W(d13)=...=W(d18)=W(d19).Between two liquid crystal lens unit are as L1 and L2, share same bar shaped dielectric block d19(d21).
As shown in Figure 5, within same liquid crystal lens unit, take L1 as example, each bar shaped dielectric block d11, d12, d13, d18, d19 etc. have about the symmetrical dielectric coefficient in liquid crystal lens center, as bar shaped dielectric block d11 and d19 possess identical dielectric coefficient ε 1, bar shaped dielectric block d12 possesses identical dielectric coefficient ε 2 with d18, bar shaped dielectric block d13 possesses identical dielectric coefficient ε 3 with d17, and bar shaped dielectric block d14 possesses identical dielectric coefficient ε 4 with d16, and the dielectric coefficient of bar shaped dielectric block d15 is ε 5.
Under 3D display mode, the second electrode 1006 is set to 0V as common electrode voltage, the square wave that the driving voltage proportion of the first electrode 1003 is fixed, positive-negative polarity checker and amplitude are V (+V ,-V ,+V ,-V ...).If the thickness of the first alignment film 1005 and the second alignment film 1007 is T, dielectric coefficient is ε
oL.The thickness of the first dielectric layer 1004 is He, and dielectric coefficient is ε.Liquid crystal lens box is thick is d1, and liquid crystal material 1008 effective permittivities are ε
lC.Exchanging under driving, by the first dielectric layer 1004, the first alignment films 1005, the capacitances in series of liquid crystal layer 1008 and second alignment film 1007 each self-formings, as shown in Figure 6, each parallel plate capacitor can be expressed as:
The capacitor C that the first alignment film 1005 forms
1005=ε
0ε
oLs/T ... (1);
The capacitor C that the second alignment film 1007 forms
1007=ε
0ε
oLs/T, i.e. C
1005=C
1007(2);
The capacitor C that the first dielectric layer 1004 forms
e=ε
0ε S/He ... (3);
The capacitor C that liquid crystal layer 1008 forms
lC=ε
0ε
lCs/d1 ... (4);
In formula (1)～(4), S represent the first electrode 1003 and the second electrode 1006 over against area, because the thickness T of the first alignment film 1005 and the second alignment film 1007 is about one of percentage of liquid crystal layer 1008 thickness d 1, i.e. T=1/100*d1, at first, second alignment film dielectric coefficient ε
oLwith liquid crystal layer effective permittivity ε
lC(be quite ε
oL≈ ε
lC) situation under, C
lC=ε
0ε
lCs/d1=ε
0ε
oLs/(100T)=ε
0ε
oLs/T*(1/100)=C
1005/ 100, by the first or second alignment film, form capacitor C
1005, C
1007be about liquid crystal capacitance C
lC100 times of (C
1005=C
1007=100C
lC).If the electric capacity both sides voltage difference that the first alignment film 1005 forms is V
1005, the electric capacity both sides voltage difference that the second alignment film 1007 forms is V
1007, the pressure reduction of liquid crystal layer 1008 both sides is V
lC, dielectric layer 1004 both sides pressure reduction are V
e, it is known according to principle and the Q=CV of the electric weight Q such as each series capacitance,
V=V
1005+V
1007+V
LC+V
e=Q/C
1005+Q/C
1007+Q/C
LC+Q/C
e≈Q/C
LC+Q/C
e=V
LC+V
e……（5）
Exchanging under driving the capacitor C that the voltage applying on the first electrode 1003 and the second electrode 1006 is almost all formed by liquid crystal layer 1008
lCand the capacitor C of the first dielectric layer 1004 formation
eshare.
V
LC/V
e=（Q/C
LC）/（Q/C
e）=（d1/He）*（ε/ε
LC）……（6）
Be distributed in the voltage difference V of liquid crystal layer 1008 both sides
lCwith the pressure reduction V that is distributed in the first dielectric layer 1004 both sides
ewith ratio d1/He and ε/ε
lCdirectly related.
As shown in Figure 7, in each lens unit, if dielectric coefficient ε 1 maximum of bar shaped dielectric block d11 and d19, the dielectric coefficient ε 2 of bar shaped dielectric block d12 and d18 takes second place, dielectric coefficient ε 5 minimums of bar shaped dielectric block d15, i.e. ε 1> ε 2> ε 3> ε 4> ε 5.Ve=Q/Ce=QH
e/ (ε
0ε S) known, lens unit edge is as bar shaped dielectric block d11 and d19 place, and due to dielectric coefficient ε=ε 1 maximum, thereby dielectric layer 1004 both sides have minimum voltage difference Ve, due to V=V
lC+ V
etherefore, V
lCmaximum; In contrast, in lens unit center, as bar shaped dielectric block d15 place, due to dielectric coefficient ε=ε 5 minimums, thereby dielectric layer 1004 both sides have maximum voltage difference Ve, due to V=V
lC+ V
etherefore, V
lCminimum; Other regions at lens unit, along with gradually changing of dielectric coefficient ε, the gradual change successively of the pressure reduction of liquid crystal layer both sides, reduces to center voltage gradually from the edge of liquid crystal lens unit, as shown in figure seven, extent is pressed in the expression liquid crystal layer both sides with the length image of vertical direction double-head arrow in figure.
As shown in Figure 8, when voltage swing on being applied to the first electrode 1003 and the second electrode 1006 is constant, for the bar shaped dielectric block with different dielectric coefficient ε as d11, d12,, d18, d19 etc., liquid crystal layer 1008 both sides in liquid crystal lens unit on diverse location have different voltage, and liquid crystal molecule presents different orientations.
Because distributing, voltage in each liquid crystal lens unit presents the trend diminishing gradually from rims of the lens to lens center, under electric field action, liquid crystal molecule carries out orientations according to different angles, as shown in Figure 9, reflected refractive index distribution situation in each lens unit, owing to having maximum pressure reduction in liquid crystal layer both sides, lens unit edge, positivity liquid crystal material molecules major axis tends to parallel with direction of an electric field, is parallel to Y-axis, and refractive index is no.In lens unit central liquid crystal layer both sides, have minimum pressure reduction, liquid crystal material molecules major axis, still in initial orientation position, is parallel to X-axis, and refractive index is ne.In other positions of lens unit, effective refractive index neff can be expressed as
wherein θ is the angle of long axis of liquid crystal molecule and Z direction, at any one state, ne>neff>no.
As shown in figure 10, take lens unit L1 and L2 as example, illustrate that first dielectric layer 1004 each bar shaped dielectric blocks are as d11, d12, d13 ..., d18, the forming process of d19 etc.In figure, light shield is 1010, photoresistance or photoresist are 1009, first on first substrate 1001, by sputter, form II in first electrode 1003(Figure 10), then PECVD formation has III in dielectric coefficient ε 1 first dielectric layer 1004(Figure 10 successively), apply photoresistance or photoresist, the present embodiment has adopted positive photoresist (IV in Figure 10), use light shield is mould board to explosure (V in Figure 10), develop (VI in Figure 10), etching (VII in Figure 10), the bar shaped dielectric block that removing photoresistance or stripping photoresist can obtain having dielectric coefficient ε 1 is as d11, d19/d21, d29 etc. (A in Figure 10), repeat each technique of III～A, the bar shaped dielectric block that can obtain successively having dielectric coefficient ε 2 is as d12, d18, d22, B in d28(Figure 10), there is the bar shaped dielectric block of dielectric coefficient ε 3 as d13, d17, d23, d27 etc. (C in Figure 10), there is the bar shaped dielectric block of dielectric coefficient ε 4 as d14, d16, d24, d26 etc. (D in Figure 10), there is the bar shaped dielectric block of dielectric coefficient ε 5 as d15, d25 etc. (E in Figure 10).
As shown in figure 11, the present embodiment is provided with a transparent insulating layer 2011 on the first dielectric layer 2004, other embodiments are identical with embodiment 1, preferred transparent insulating layer 2011 should have high-dielectric coefficient to reduce pressure drop in its both sides (from formula (5), for capacitances in series, it is less that electric capacity is got more greatly voltage), thus the size of driving voltage do not increased.Because regional in liquid crystal lens unit need to be controlled the voltage V that is applied to liquid crystal layer 2008 both sides accurately
lC, according to V=V
lC+ V
e, need accurately to control V on dielectric layer 2004
esize, due to V
e=Q/C
e=QHe/ ε
0ε S, works as V
ewhen size is determined, can be by regulating each bar shaped dielectric block dielectric coefficient ε and two parameters of bar shaped dielectric block thickness He of dielectric layer 2004 to regulate (also can be learnt by formula (6)), according to the dielectric coefficient difference of selected material, each bar shaped dielectric block thickness He just can be different.Therefore, transparent insulating layer 2011 mainly plays the effect of the planarization dielectric layer 2004 upper surfaces one side of second substrate 2002 (towards), is convenient to the first alignment film 2005 and has an even surface to offer the good initial orientation of liquid crystal molecule 2008.
As shown in Figure 12 and Figure 13, Figure 12 and Figure 13 are the schematic diagram of liquid crystal lens 3 d display device under 3D and 2D display mode.Under 2D display mode, liquid crystal lens is not modulated original image, and the key property parameters such as the brightness of whole liquid crystal lens 3 d display device, resolution are substantially unaffected; Under 3D display mode, because the actual driving voltage of liquid crystal layer both sides in each liquid crystal lens unit is symmetrical distribution, each liquid crystal lens unit plays the function of similar convex lens, realizes right and left eyes image separated, thus the stereoeffect of watching.
Claims (10)
1. a liquid crystal lens, comprise a plurality of liquid crystal lens unit, each lens unit comprises first substrate, the first electrode, the first dielectric layer, the first alignment film, second substrate, the second electrode, the second alignment film and liquid crystal material, described the first electrode is arranged on first substrate, the second electrode is arranged on second substrate, the first dielectric layer is arranged on the first electrode, the first alignment film is arranged on the first dielectric layer, the second alignment film is arranged on the second electrode, liquid crystal material is encapsulated between the first alignment film and the second alignment film, a plurality of lens units repetition period property in x direction repeats to form liquid crystal lens array, it is characterized in that, described the first dielectric layer comprises that odd number sets gradually and extends and parallel bar shaped dielectric block along Y-direction at directions X, the width of described bar shaped dielectric block is identical and be labeled as successively d11, d12, d13, d18, d1n, the electrical conductivity of described bar shaped dielectric block is along d1((n+1)/2) symmetrical, d1((n+1)/2) electrical conductivity is minimum, the electrical conductivity of d11 and d1n is maximum and equal, the electrical conductivity that is lens unit is reduced to center gradually by the edge of lens.
2. liquid crystal lens according to claim 1, is characterized in that, described the first electrode and the second electrode are the face electrode that there is no special pattern, are transparent conductive material.
3. liquid crystal lens according to claim 1, is characterized in that, under described 3D display mode, the second electrode is that common electrode is set to 0V, and the driving voltage of the first electrode is that amplitude is that the frequency of V is fixed and square wave (+the V ,-V of positive-negative polarity checker, + V ,-V ...).
4. liquid crystal lens according to claim 1, is characterized in that, between described the first dielectric layer and the first alignment film, is provided with transparent insulating layer.
5. liquid crystal lens according to claim 1, is characterized in that, described liquid crystal lens array also comprises the periphery sealed plastic box of liquid crystal material encapsulation and for controlling the spacer that liquid crystal cell is thick.
6. an application rights requires the 3 d display device of liquid crystal lens described in 1～5 any one.
7. a preparation method for liquid crystal lens as claimed in claim 1, is characterized in that, comprises the following steps:
(1) on first substrate, sputter forms the first electrode;
(2) preparation has the first dielectric layer of maximum dielectric coefficient;
(3) apply photoresistance or photoresist;
(4) expose, development, etching;
(5) remove photoresistance or stripping photoresist, the bar shaped dielectric block that retains two ends obtains having the bar shaped dielectric block of maximum dielectric coefficient;
(6) repeating step (2)～(5) successively, obtain the second dielectric layer that dielectric coefficient is reduced to center gradually by edge.
8. the preparation method of a kind of liquid crystal lens according to claim 7, is characterized in that, in described step (2), the method for preparation the first dielectric layer is plasma reinforced chemical vapour deposition method PECVD or spin coating.
9. the preparation method of a kind of liquid crystal lens according to claim 7, is characterized in that, described photoresist is positive photoresist.
10. the preparation method of a kind of liquid crystal lens according to claim 7, is characterized in that, adopts light shield as mould board to explosure in described step (4).
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| 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 |
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| CN108761884A (en) * | 2018-08-03 | 2018-11-06 | 北京航空航天大学 | A kind of blue phase liquid crystal lens of big focusing range |
| 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 |
| CN109164650A (en) * | 2018-09-25 | 2019-01-08 | 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 |
| CN112673306A (en) * | 2018-09-21 | 2021-04-16 | 凸版印刷株式会社 | Light modulation device |
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