CN103913879A - Liquid crystal lens, method for forming same and stereoscopic display device - Google Patents
Liquid crystal lens, method for forming same and stereoscopic display device Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 333
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 101
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 210000002858 crystal cell Anatomy 0.000 claims description 70
- 229920002120 photoresistant polymer Polymers 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 10
- 230000005669 field effect Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 230000005684 electric field Effects 0.000 description 9
- 230000009467 reduction Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The invention discloses a liquid crystal lens which comprises a first substrate, a second substrate, a photo spacer, frame sealing compounds, first electrode layers, a first alignment film, a first liquid crystal layer, a third substrate, a third alignment film, third electrode layers, a fourth alignment film, second electrode layers and a second alignment film. Liquid crystal units are formed among the axes of the adjacent third electrode layers in the length directions of the adjacent third electrode layers, the third alignment film is opposite to the first liquid crystal layer, and the second liquid crystal layer is distributed between the second alignment film and the fourth alignment film. The liquid crystal lens has the advantages that time required when a 2D (two-dimensional) display mode and a 3D (three-dimensional) display mode of the liquid crystal lens are switched over can be shortened, response time of the liquid crystal lens can be greatly shortened, and the smoothness of pictures can be improved; liquid crystal molecules of a lower-layer structure of the liquid crystal lens which is of a double-layer structure are cured, so that edge field effects of electrodes at the junctions of the various liquid crystal lens units can be reduced, and the viewing comfort can be improved. The invention further discloses a stereoscopic display device and a method for forming the liquid crystal lens.
Description
Technical field
The present invention relates to 3D field of display devices, particularly relate to the formation method of liquid crystal lens, 3 d display device and this liquid crystal 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, form varifocal liquid crystal lens to drive Liquid Crystal Molecules Alignment.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, Fig. 1 is a kind of common liquid crystal lens array structure 100 schematic diagram, and it contains multiple liquid crystal lens unit as L1 and L2 etc., 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 just to arranging, 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, multiple strip electrodes that separate at certain intervals and be arranged in parallel such as S19, the quantity of electrode is generally odd number (describing as an example of nine electrodes example below), 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 alignment film 108 on the second electrode 107 and be arranged on alignment film 105 on dielectric material 104 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(is 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 minimum applying on the central electrode S15 of liquid crystal lens unit, and at the edge electrodes S11 of lens unit, the voltage maximum applying on S19, the voltage from lens center to rims of the lens on each strip electrode distributes with certain gradient.Due to the voltage maximum applying on lens unit edge electrodes, edge electrodes S11, the liquid crystal molecule of S19 position substantially presents vertical direction and distributes, and less the closer to the center voltage of lens unit, therefore liquid crystal molecule can tend to horizontal direction arrangement gradually.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.
On the one hand, gradually changed refractive index lens are GRIN LENS optical path difference formula △ nd=D
2/ (8f), wherein △ n=nmax-n (r)=ne-n (r), ne be liquid crystal material to extraordinary ray refractive index, refractive index n (r) can be different at diverse location as the function of position r.In as Fig. 2, the edge electrodes of each lens unit is as S11, S19 (S21) and S29 position due to liquid crystal molecule in vertical state, n (r)=no, and at the central electrode of each lens as S15, S25 position long axis of liquid crystal molecule presents horizontality, n (r)=ne.D is the size of each lens unit opening, the focal length that f is lens unit, and d is that liquid crystal cell is thick.Hence one can see that to when liquid crystal material (△ n), focal length (f) definite after, the thick d of liquid crystal cell is along with the increase of lens openings D increases with quadratic relationship, and liquid crystal lens response time t ∝ d
2, cause the liquid crystal lens response time very slow.
On the other hand, in each liquid crystal lens unit if each strip electrode in L1 is as S11, S12, S13 ..., S18, applies on S19 etc. after symmetrical voltage, arranges by voltage optimization, can obtain optical path difference in each lens unit and distribute.For crosstalking of reducing that liquid crystal lens causes in the time that 3D shows, avoid left (right side) eye image information to be perceived by right (left side) eye the quality that reduces stereo display respectively, therefore need liquid crystal lens and the distribution of parabolic type lens light path difference to match.
Fig. 3 has compared the difference that common liquid crystal lens optical path difference distributes (analog result) and parabolic type lens light path difference distributes after optimizing.Can find out, approach with desirable para-curve although liquid crystal lens unit optical path difference distribution curve after voltage optimization is basic in lens center, but two liquid crystal lens unit intersections (identifying with square frame in figure), liquid crystal lens optical path difference distributes and still obviously departs from desirable para-curve, use the 3 d display device generation of liquid crystal lens to crosstalk more greatly thereby cause, reduced stereo display effect and observed comfort level.
Summary of the invention
The invention provides a kind of liquid crystal lens, in order to improve above-mentioned drawback.
Based on described problem, the invention provides a kind of liquid crystal lens, comprise the first substrate and the second substrate that are oppositely arranged, spacer between first substrate and second substrate, and be encapsulated in the sealed plastic box of first substrate and second substrate periphery, on described first substrate, be coated with the first electrode layer, on described the first electrode layer, be coated with the first alignment film, on described the first alignment film, be distributed with the first liquid crystal layer after liquid crystal molecule solidifies; Also comprise the 3rd substrate, one side of described the 3rd substrate is coated with the 3rd alignment film, opposite side is coated with the strip third electrode layer that equidistant intervals be arranged in parallel, between the axis of adjacent described third electrode layer length direction, form liquid crystal cells, on described third electrode layer, be coated with the 4th alignment film; Described the 3rd alignment film is relative with described the first liquid crystal layer, on described second substrate, is coated with the second electrode lay, is coated with the second alignment film on described the second electrode lay, between described the second alignment film and described the 4th alignment film, is distributed with the second liquid crystal layer.
Preferably, also comprise strip the 3rd liquid crystal layer that is distributed in parallel with described third electrode layer length direction in described the first liquid crystal layer and is equidistantly spaced.
Preferably, described the 3rd liquid crystal layer is relative and corresponding one by one with the position of described third electrode layer.
Preferably, described the first electrode layer is the list structure that equidistant intervals be arranged in parallel, and described the first electrode layer is relative and corresponding one by one with described third electrode layer position.
Preferably, between adjacent described third electrode layer, be provided with the 4th electrode layer that is parallel to described third electrode layer and equidistant intervals.
The present invention also provides a kind of 3 d display device, comprises the liquid crystal lens described in above-mentioned embodiment.
The present invention also provides a kind of formation method of liquid crystal lens, described liquid crystal lens comprises the first substrate and the second substrate that are oppositely arranged, on described first substrate, be coated with the first electrode layer, on described the first electrode layer, be coated with the first alignment film, on described the first alignment film, be distributed with the first liquid crystal layer after liquid crystal molecule solidifies; Also comprise second substrate and the 3rd substrate, one side of described the 3rd substrate is coated with the 3rd alignment film, opposite side is coated with the strip third electrode layer that equidistant intervals be arranged in parallel, between the axis of adjacent described third electrode layer length direction, form liquid crystal cells, on described third electrode layer, be coated with the 4th alignment film; Described the 3rd alignment film is relative with described the first liquid crystal layer, on described second substrate, is coated with the second electrode lay, is coated with the second alignment film on described the second electrode lay, between described the second alignment film and described the 4th alignment film, is distributed with the second liquid crystal layer,
First on described first substrate, form the first electrode layer;
On described the first electrode layer, form described the first alignment film;
On described the first alignment film, be coated with photoresist, the photoresist thickness being coated with is the thickness of described the first liquid crystal layer;
Described first substrate carries out the exposure of odd number liquid crystal cells from a side take light shield as template, after exposure, develops;
In described odd number liquid crystal cells, be coated with the liquid crystal after solidifying;
Liquid crystal cells of direction translation that described light shield is arranged along described liquid crystal cells;
Carry out the exposure of even numbers liquid crystal cells by described light shield, after exposure, develop;
In described even numbers liquid crystal cells, be coated with the liquid crystal after solidifying, form the first liquid crystal layer with described odd number liquid crystal cells;
The glass substrate of cover tape the 5th alignment film on described the first liquid crystal layer, the friction orientation of the friction orientation of described the 5th alignment film and described the first alignment film oppositely arranges, and relative with described the first liquid crystal layer with described the 5th alignment film, by orientation under high temperature, long axis of liquid crystal molecule in described the first liquid crystal layer is arranged along the frictional direction of described the first alignment film, carried out afterwards the first curable liquid crystal layer;
Described glass substrate is peeled off from described the first liquid crystal layer, on described the first liquid crystal layer, be coated with one deck photoresist;
Light shield is covered on described photoresist, and expose, after exposure, develop;
The photoresist between described odd number liquid crystal cells and described even numbers liquid crystal cells is removed in first dry ecthing, then removes the photoresist on described odd number liquid crystal cells and even numbers liquid crystal cells surface;
Between described odd number liquid crystal cells and described even numbers liquid crystal cells, be coated with the 3rd liquid crystal layer;
By described the 3rd baseplate-laminating with described the 3rd alignment film, on described the first liquid crystal layer, described the 3rd alignment film is relative with described the first liquid crystal layer;
By relative with described the 4th alignment film described the second alignment film one side on described second substrate, and pour into the second liquid crystal layer between described the second alignment film and described the 4th alignment film.
Preferably, described the first liquid crystal layer is cured by UV-irradiation.
Liquid crystal lens provided by the invention, in the situation that guaranteeing the identical focusing power of liquid crystal lens, compared with traditional liquid crystal lens, this double-layer liquid crystal lens can be reduced to the response time original 1/4, shorten liquid crystal lens required time while changing between 2D display mode and 3D display mode, greatly reduce the response time of liquid crystal lens, improve the smooth degree of picture.Solidify and arrange by the liquid crystal molecule of double-layer liquid crystal lens understructure simultaneously, reduce each liquid crystal lens unit intersection electrode edge field effect, what the problem that reduces to misfit because of optical path difference between liquid crystal cells and parabolic type lens was brought crosstalks, and improves and watches comfort level.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquid crystal lens in making alive situation not in prior art;
Fig. 2 is the structural representation of liquid crystal lens in making alive situation in prior art;
Fig. 3 is the distribute curve map of the difference distributing with parabolic type lens light path difference of the common liquid crystal lens optical path difference after optimizing;
Fig. 4 is the partial structurtes schematic diagram of liquid crystal lens in embodiment of the present invention;
Fig. 5 is the structural representation of the first liquid crystal layer and the 3rd liquid crystal layer;
Fig. 6 is the partial structurtes schematic diagram after liquid crystal lens making alive in embodiment of the present invention;
Fig. 7 is the first area of liquid crystal lens in embodiment of the present invention and the curve map of second area optical path difference;
Fig. 8 is the partial structurtes schematic diagram of the second liquid crystal lens in embodiment of the present invention;
Fig. 9 is the partial structurtes schematic diagram of the third liquid crystal lens in embodiment of the present invention;
Figure 10 is the liquid crystal lens of the embodiment of the present invention schematic diagram under 2D display mode;
Figure 11 is the liquid crystal lens of the embodiment of the present invention schematic diagram under 3D display mode;
Figure 12～Figure 14 is the schematic diagram of the forming process of the liquid crystal lens of embodiment of the present invention.
Embodiment
Below in conjunction with Figure of description, the specific embodiment of the present invention is described.
The invention provides a kind of liquid crystal lens 1000, comprise the first substrate 1001 and the second substrate 1002 that are oppositely arranged, spacer between first substrate 1001 and second substrate 1002, and be encapsulated in the sealed plastic box of first substrate 1001 and second substrate 1002 peripheries, on first substrate 1001, be coated with the first electrode layer 1003, on the first electrode layer 1003, be coated with the first liquid crystal layer 1005 being distributed with on the first alignment film 1004, the first alignment films 1004 after liquid crystal molecule solidifies; Also comprise the 3rd substrate 1008, one side of the 3rd substrate 1008 is coated with the 3rd alignment film 1007, opposite side is coated with the strip third electrode layer 1009 that equidistant intervals be arranged in parallel, between the axis of adjacent third electrode layer 1009 length direction, form liquid crystal cells, on third electrode layer 1009, be coated with the 4th alignment film 1010; The 3rd alignment film 1007 is relative with the first liquid crystal layer 1005, on second substrate 1002, be coated with the second electrode lay 1011, on the second electrode lay 1011, be coated with between the second alignment film 1012, the second alignment films 1012 and the 4th alignment film 1010 and be distributed with the second liquid crystal layer 1013.
Further, also comprise strip the 3rd liquid crystal layer 1006 that is distributed in parallel with third electrode layer 1009 length direction in the first liquid crystal layer 1005 and is equidistantly spaced.
Wherein, the 3rd liquid crystal layer 1006 is relative and corresponding one by one with the position of third electrode layer 1009.
As shown in Figure 4, liquid crystal lens 1000 contains multiple liquid crystal lens unit as (only having drawn three lens units in figure) such as the first liquid crystal cells 1, the second liquid crystal cells 2 and the 3rd liquid crystal cells 3, and each liquid crystal cells has identical structure.Concretely, liquid crystal lens 1000 comprises first substrate 1001, second substrate 1002 and the 3rd substrate 1008.First substrate 1001, second substrate 1002 and the 3rd substrate 1008 are just to arranging, wherein first substrate 1001 is flexible and transparent base material, as high temperature resistant PET, second substrate 1002 and the 3rd substrate 1008 can be the transparent bases such as glass, and each substrate has identical or close refractive index.On first substrate 1001, be provided with the first electrode layer 1003, the first electrode layers 1003 and be generally whole transparent conductive material, as ITO or IZO etc., without special graph.On the first electrode layer 1003, be provided with the first alignment film 1004, the first alignment film 1004 can be the organic materials such as polyimide, be used for controlling liquid crystal molecular orientation, the 2D that the frictional direction of the first alignment film 1004 uses with liquid crystal lens shows that module light direction is parallel, and 2D shows polaroid light transmission shaft direction on module.On the first alignment film 1004, be provided with the first liquid crystal layer 1005, in the first liquid crystal layer, also comprise the 3rd liquid crystal layer 1006 (with reference to Fig. 5), wherein the first liquid crystal layer 1005 is positivity uv-curing type liquid crystal material, possess under normal temperature, present solid-state, under high temperature, be melted into liquid crystal state, through coating, the characteristic such as UV curable after high temperature orientation; And the 3rd liquid crystal layer 1006 is for possessing wider operating temperature range, normal temperature, to be mesomorphic 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.)。If liquid crystal is ne (1005) to extraordinary ray refractive index in the first liquid crystal layer 1005, in the 3rd liquid crystal layer, liquid crystal is no (1006) to ordinary refraction index, requires ne (1005) >no (1006).
Just a side of first substrate 1001 is provided with to the second electrode lay 1011 at second substrate 1002, the second electrode lay 1011 is generally whole transparent conductive material, as ITO or IZO etc., without special graph.On the second electrode lay 1011, be provided with the second alignment film 1012, the second alignment film 1012 can be the organic materials such as polyimide, be used for controlling liquid crystal molecular orientation, the frictional direction of the frictional direction of the second alignment film 1012 and the first alignment film 1004 be arranged in parallel.
In the just side to first substrate 1001 of the 3rd substrate 1008, be provided with the 3rd alignment film 1007, the 3rd alignment film 1007 can be the organic materials such as polyimide, and for controlling liquid crystal molecular orientation, the frictional direction of the frictional direction of the 3rd alignment film 1007 and the first alignment film 1004 be arranged in parallel.In the just side to second substrate 1002 of the 3rd substrate 1008, be provided with third electrode layer 1009, third electrode layer 1009 is that transparent conductive material is as ITO or IZO.Third electrode layer 1009 is by sputter, upper photoresist 1020, exposure, development, etching and remove the master operation formation such as photoresist 1020, third electrode layer 1009 forms strip electrode, and every two lens units are as the first liquid crystal cells 1 and the second liquid crystal cells 2 and the second liquid crystal cells 2 and the shared third electrode layer 1009 of the 3rd liquid crystal cells 3.At third electrode layer 1009 just to second substrate 1,002 one sides, be provided with the 4th alignment film 1010, the 4th alignment film 1010 can be the organic materials such as polyimide, and for controlling liquid crystal molecular orientation, the frictional direction of the frictional direction of the 4th alignment film 1010 and the first alignment film 1004 be arranged in parallel.
Between second substrate 1002 and the 3rd substrate 1008, be provided with the second liquid crystal layer 1013, the second liquid crystal layers 1013 and can select the liquid crystal material identical with the 3rd liquid crystal layer 1006.In addition, liquid crystal lens 1000 also comprises between first substrate 1001 and the 3rd substrate 1008 and between periphery sealed plastic box, second substrate 1002 and the 3rd substrate 1008 for encapsulating the first liquid crystal layer 1005 and the 3rd liquid crystal layer 1006, to encapsulate the periphery sealed plastic box of the second liquid crystal layer 1013 and for controlling the spacer that liquid crystal cell is thick (spacer) etc.
Fig. 6 is liquid crystal lens the first embodiment liquid crystal molecular orientation schematic diagram under 3D display mode.Take the first liquid crystal cells 1 as example, can using the first electrode layer 1003 with the second electrode lay 1011 as common electrode, voltage is set to zero.And on third electrode layer 1009, apply an identical voltage, determine according to the thickness of the 3rd liquid crystal layer 1006 and the second liquid crystal layer 1013 and liquid crystal material characteristic, this voltage should be enough to producing larger pressure reduction between the first electrode layer 1003 and third electrode layer 1009 and between the second electrode lay 1011 and third electrode layer 1009, and the molecular long axis of the positivity liquid crystal material on third electrode layer 1009 is arranged along the arragement direction of third electrode layer 1009.
Owing to there is larger pressure reduction between the first electrode layer 1003 and third electrode layer 1009, the 3rd liquid crystal layer 1006 long axis of liquid crystal molecule are arranged along the length direction of third electrode layer 1009, and the first liquid crystal layer 1005 is owing to not being subject to electric field influence after ultra-violet curing, owing to having larger pressure reduction between the second electrode lay 1011 and third electrode layer 1009, on third electrode layer 1009, the long axis of liquid crystal molecule of the second liquid crystal layer 1013 is arranged along the direction of vertical the second liquid crystal layer 1013, within each liquid crystal cells, because the lateral electric fields between third electrode layer 1009 and the second electrode lay 1011 is along with apart from third electrode layer 1009, more electric field is more weak, cause in each liquid crystal cells, the liquid crystal molecule pressure reduction maximum at edge, the liquid crystal molecule pressure reduction minimum at center, from the edge of liquid crystal cells to center, pressure reduction distributes with certain gradient, long axis of liquid crystal molecule on third electrode layer 1009 is arranged along the direction of vertical the second liquid crystal layer 1013, and the closer to liquid crystal cells center, liquid crystal molecule can tend to gradually horizontal direction and arrange.Under 3D display mode, the optical path difference jointly being caused by the first liquid crystal layer 1005 and the second liquid crystal layer 1013 presents ascending in each liquid crystal cells, descending gradual change trend again, as Fig. 7, in figure, dotted portion represents the optical path difference that the first area 1060 of liquid crystal lens 1000 causes, and solid line part represents the optical path difference being caused by the second area 1070 of liquid crystal lens 1000.
In the situation that focusing power is identical, the second liquid crystal layer 1013 of this liquid crystal lens 1000 and the thickness of the first liquid crystal layer 1005 and the 3rd liquid crystal layer 1006 be respectively general structure liquid crystal lens thickness of liquid crystal layer 1/2, due to liquid crystal response time t ∝ d
2, therefore adopt the liquid crystal lens of this structure the response time can be shortened to general structure the liquid crystal lens response time 1/4, make the switching between 2D pattern and 3D pattern become more smooth.
For the first liquid crystal layer 1005, the first liquid crystal layer 1005 belongs to uv-curing type liquid crystal, no longer be subject to electric field influence completing liquid crystal molecular orientation after orientation ultra-violet curing, the 3rd liquid crystal layer 1006 is owing to being positivity liquid crystal material, under 3D pattern, can guarantee the direction arrangement of its molecular long axis along vertical the 3rd alignment film 1007 by forming larger pressure reduction, compared with general structure liquid crystal lens, between adjacent two liquid crystal cells, form less crosstalking, optical path difference distributes and more approaches desirable parabolic type curve, improves the comfort level of watching under 3D pattern.
Further, as shown in Figure 8, in a true mode of the present invention, list: the list structure that the first electrode layer 1003 be arranged in parallel for equidistant intervals, the first electrode layer 1003 is relative with third electrode layer 1009 position and corresponding one by one.In the present embodiment, for further reducing the lateral electric fields between the first electrode layer 1003 and third electrode layer 1009, the first electrode layer 1003 is set to multiple, between spaced apart and alongst extend strip electrode, the spacing of each the first electrode layer 1003 center to center is the width of lens.Each first electrode layer 1003 be positioned at third electrode layer 1009 under, the first electrode layer 1003 is less than or equal to the width of third electrode layer 1009 at arragement direction at the width of arragement direction, and the first electrode layer 1003 is still set to zero as common electrode voltage.
Further, as shown in Figure 9, between adjacent third electrode layer 1009, be provided with the 4th electrode layer 1014 that is parallel to third electrode layer 1009 and equidistant intervals.In the present embodiment, third electrode layer 1009 only has two electrodes in left and right in each liquid crystal cells (as the first liquid crystal cells 1), in the present embodiment, third electrode layer 1009 is set to each liquid crystal cells and contains multiple strip electrodes that separate at certain intervals and alongst extend at arragement direction, the 4th electrode layer 1014 of lens center is less than the width of each third electrode layer 1009 at the width of arragement direction, by apply the voltage of graded on the 4th electrode layer 1014, the further variation of mild each liquid crystal cells internal electric field gradient.
Figure 10 is the schematic diagram of liquid crystal lens under 2D display mode.In the time not applying voltage on the first electrode layer 1003, the second electrode lay 1011 and third electrode layer 1009, liquid crystal in whichever liquid crystal layer, molecular long axis is all along each alignment film frictional direction orientation, for showing that from 2D the light that module is vertically injected does not produce optical path difference.Under 2D display mode, liquid crystal lens 1000 is not modulated original image, and the key property such as brightness, the resolution parameter of whole liquid crystal lens 3 d display device is substantially unaffected.
Figure 11 is the schematic diagram of liquid crystal lens under 3D display mode.In the time applying corresponding driving voltage on the first electrode layer 1003, the second electrode lay 1011 and third electrode layer 1009, except the first liquid crystal layer 1005 uv-curing type liquid crystal molecular orientations are constant, the molecular long axis of the 3rd liquid crystal layer 1006 is orientated perpendicular to the 3rd alignment film 1007 surfaces, in the second liquid crystal layer 1013, liquid crystal produces different molecular orientation under the driving of gradient electric field, makes generation parabolic type optical path difference in each liquid crystal lens unit.Under 3D display mode, each liquid crystal cells plays the function of similar convex lens, and realize right and left eyes image and separate, thus the stereoeffect of watching.
The present invention also provides a kind of 3 d display device, comprises the liquid crystal lens 1000 in above-mentioned embodiment.
As shown in Figure 12～Figure 14, the present invention also provides a kind of formation method of liquid crystal lens 1000, liquid crystal lens comprises the first substrate 1001 and the second substrate 1002 that are oppositely arranged, on first substrate 1001, be coated with the first electrode layer 1003, on the first electrode layer 1003, be coated with the first liquid crystal layer 1005 being distributed with on the first alignment film 1004, the first alignment films 1004 after liquid crystal molecule solidifies; Also comprise the 3rd substrate 1008, one side of the 3rd substrate 1008 is coated with the 3rd alignment film 1007, opposite side is coated with the strip third electrode layer 1009 that equidistant intervals be arranged in parallel, between the axis of adjacent third electrode layer 1009 length direction, form liquid crystal cells, on third electrode layer 1009, be coated with the 4th alignment film 1010; The 3rd alignment film 1007 is relative with the first liquid crystal layer 1005, on second substrate 1002, be coated with the second electrode lay 1011, on the second electrode lay 1011, be coated with between the second alignment film 1012, the second alignment films 1012 and the 4th alignment film 1010 and be distributed with the second liquid crystal layer 1013
First on first substrate 1001, form the first electrode layer 1003;
On the first electrode layer 1003, form the first alignment film 1004;
On the first alignment film 1004, be coated with photoresist, the photoresist thickness being coated with is the thickness of the first liquid crystal layer 1005;
First substrate 1001 carries out the exposure of odd number liquid crystal cells from a side take light shield 1021 as template, after exposure, develop;
In odd number liquid crystal cells, be coated with the liquid crystal after solidifying;
Liquid crystal cells of direction translation that light shield 1021 is arranged along liquid crystal cells;
Carry out the exposure of even numbers liquid crystal cells by light shield 1021, after exposure, develop;
In even numbers liquid crystal cells, be coated with the liquid crystal after solidifying, form the first liquid crystal layer 1005 with odd number liquid crystal cells;
The glass substrate of cover tape the 5th alignment film on the first liquid crystal layer 1005, the friction orientation of the friction orientation of the 5th alignment film and the first alignment film 1004 oppositely arranges, and relative with the first liquid crystal layer 1005 with the 5th alignment film, by orientation under high temperature, long axis of liquid crystal molecule in the first liquid crystal layer 1005 is arranged along the frictional direction of the first alignment film, carried out afterwards the first liquid crystal layer 1005 and solidify;
Glass substrate is peeled off from the first liquid crystal layer 1005, on the first liquid crystal layer 1005, be coated with one deck photoresist 1020;
Light shield 1021 is covered on photoresist 1020, and expose, after exposure, develop;
First the photoresist 1020 between odd number liquid crystal cells and even numbers liquid crystal cells is removed in dry ecthing, then removes the photoresist 1020 on odd number liquid crystal cells and even numbers liquid crystal cells surface;
Between odd number liquid crystal cells and even numbers liquid crystal cells, be coated with the 3rd liquid crystal layer 1006;
To be fitted on the first liquid crystal layer 1005 with the 3rd substrate 1008 of the 3rd alignment film 1007, the 3rd alignment film 1007 is relative with the first liquid crystal layer 1005;
By relative with the 4th alignment film the second alignment film 1,012 one sides on second substrate 1002, and pour into the second liquid crystal layer 1013 between the second alignment film 1012 and the 4th alignment film 1010.
Preferably, the first liquid crystal layer 1005 can be cured by UV-irradiation.
Liquid crystal lens provided by the invention, in the situation that guaranteeing the identical focusing power of liquid crystal lens, compared with traditional liquid crystal lens, this double-layer liquid crystal lens can be reduced to the response time original 1/4, shorten liquid crystal lens required time while changing between 2D display mode and 3D display mode, greatly reduce the response time of liquid crystal lens, improve the smooth degree of picture.Solidify and arrange by the liquid crystal molecule of double-layer liquid crystal lens understructure simultaneously, reduce each liquid crystal lens unit intersection electrode edge field effect, what the problem that reduces to misfit because of optical path difference between liquid crystal cells and parabolic type lens was brought crosstalks, and improves and watches comfort level.
The above embodiment has only been expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a liquid crystal lens, comprise the first substrate and the second substrate that are oppositely arranged, spacer between first substrate and second substrate, and be encapsulated in the sealed plastic box of first substrate and second substrate periphery, it is characterized in that, on described first substrate, be coated with the first electrode layer, on described the first electrode layer, be coated with the first alignment film, on described the first alignment film, be distributed with the first liquid crystal layer after liquid crystal molecule solidifies; Also comprise the 3rd substrate, one side of described the 3rd substrate is coated with the 3rd alignment film, opposite side is coated with the strip third electrode layer that equidistant intervals be arranged in parallel, between the axis of adjacent described third electrode layer length direction, form liquid crystal cells, on described third electrode layer, be coated with the 4th alignment film; Described the 3rd alignment film is relative with described the first liquid crystal layer, on described second substrate, is coated with the second electrode lay, is coated with the second alignment film on described the second electrode lay, between described the second alignment film and described the 4th alignment film, is distributed with the second liquid crystal layer.
2. liquid crystal lens according to claim 1, is characterized in that, also comprises strip the 3rd liquid crystal layer that is distributed in parallel with described third electrode layer length direction in described the first liquid crystal layer and is equidistantly spaced.
3. liquid crystal lens according to claim 2, is characterized in that, described the 3rd liquid crystal layer is relative and corresponding one by one with the position of described third electrode layer.
4. liquid crystal lens according to claim 3, is characterized in that, described the first electrode layer is the list structure that equidistant intervals be arranged in parallel, and described the first electrode layer is relative and corresponding one by one with described third electrode layer position.
5. liquid crystal lens according to claim 4, is characterized in that, is provided with the 4th electrode layer that is parallel to described third electrode layer and equidistant intervals between adjacent described third electrode layer.
6. a 3 d display device, is characterized in that, comprises the liquid crystal lens described in any one in claim 1～5.
7. the formation method of a liquid crystal lens, described liquid crystal lens comprises the first substrate and the second substrate that are oppositely arranged, on described first substrate, be coated with the first electrode layer, on described the first electrode layer, be coated with the first alignment film, on described the first alignment film, be distributed with the first liquid crystal layer after liquid crystal molecule solidifies; Also comprise second substrate and the 3rd substrate, one side of described the 3rd substrate is coated with the 3rd alignment film, opposite side is coated with the strip third electrode layer that equidistant intervals be arranged in parallel, between the axis of adjacent described third electrode layer length direction, form liquid crystal cells, on described third electrode layer, be coated with the 4th alignment film; Described the 3rd alignment film is relative with described the first liquid crystal layer, on described second substrate, be coated with the second electrode lay, on described the second electrode lay, be coated with the second alignment film, between described the second alignment film and described the 4th alignment film, be distributed with the second liquid crystal layer, it is characterized in that
On described first substrate, form the first electrode layer;
On described the first electrode layer, form described the first alignment film;
On described the first alignment film, be coated with photoresist, the photoresist thickness being coated with is the thickness of described the first liquid crystal layer;
Described first substrate carries out the exposure of odd number liquid crystal cells from a side take light shield as template, after exposure, develops;
In described odd number liquid crystal cells, be coated with the liquid crystal after solidifying;
Liquid crystal cells of direction translation that described light shield is arranged along described liquid crystal cells;
Carry out the exposure of even numbers liquid crystal cells by described light shield, after exposure, develop;
In described even numbers liquid crystal cells, be coated with the liquid crystal after solidifying, form the first liquid crystal layer with described odd number liquid crystal cells;
The glass substrate of cover tape the 5th alignment film on described the first liquid crystal layer, the friction orientation of the friction orientation of described the 5th alignment film and described the first alignment film oppositely arranges, and relative with described the first liquid crystal layer with described the 5th alignment film, by orientation under high temperature, long axis of liquid crystal molecule in described the first liquid crystal layer is arranged along the frictional direction of described the first alignment film, carried out afterwards the first curable liquid crystal layer;
Described glass substrate is peeled off from described the first liquid crystal layer, on described the first liquid crystal layer, be coated with one deck photoresist;
Light shield is covered on described photoresist, and expose, after exposure, develop;
The photoresist between described odd number liquid crystal cells and described even numbers liquid crystal cells is removed in first dry ecthing, then removes the photoresist on described odd number liquid crystal cells and even numbers liquid crystal cells surface;
Between described odd number liquid crystal cells and described even numbers liquid crystal cells, be coated with the 3rd liquid crystal layer;
By described the 3rd baseplate-laminating with described the 3rd alignment film, on described the first liquid crystal layer, described the 3rd alignment film is relative with described the first liquid crystal layer;
By relative with described the 4th alignment film described the second alignment film one side on described second substrate, and pour into the second liquid crystal layer between described the second alignment film and described the 4th alignment film.
8. the formation method of liquid crystal lens as claimed in claim 7, is characterized in that, described the first liquid crystal layer is cured by UV-irradiation.
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Cited By (6)
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| CN104494280A (en) * | 2015-01-09 | 2015-04-08 | 重庆卓美华视光电有限公司 | Liquid crystal cylindrical lens membrane peeling device |
| CN105929618A (en) * | 2016-06-20 | 2016-09-07 | 宁波万维显示科技有限公司 | Liquid crystal fresnel lens and preparation method thereof |
| CN106950776A (en) * | 2017-04-12 | 2017-07-14 | 上海天马微电子有限公司 | Guest-host type liquid crystal device and method of fabricating the same |
| CN110928057A (en) * | 2019-12-12 | 2020-03-27 | Tcl华星光电技术有限公司 | Liquid crystal display panel |
| CN114859607A (en) * | 2022-04-25 | 2022-08-05 | 北京京东方技术开发有限公司 | Superlens, manufacturing method thereof and display device |
| TWI851255B (en) * | 2023-06-01 | 2024-08-01 | 凌巨科技股份有限公司 | Display apparatus |
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| CN105929618A (en) * | 2016-06-20 | 2016-09-07 | 宁波万维显示科技有限公司 | Liquid crystal fresnel lens and preparation method thereof |
| CN106950776A (en) * | 2017-04-12 | 2017-07-14 | 上海天马微电子有限公司 | Guest-host type liquid crystal device and method of fabricating the same |
| CN110928057A (en) * | 2019-12-12 | 2020-03-27 | Tcl华星光电技术有限公司 | Liquid crystal display panel |
| CN114859607A (en) * | 2022-04-25 | 2022-08-05 | 北京京东方技术开发有限公司 | Superlens, manufacturing method thereof and display device |
| TWI851255B (en) * | 2023-06-01 | 2024-08-01 | 凌巨科技股份有限公司 | Display apparatus |
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| CN103913879B (en) | 2017-06-30 |
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