CN203287666U - Liquid crystal lens and stereo display device applying liquid crystal lens - Google Patents
Liquid crystal lens and stereo display device applying liquid crystal lens Download PDFInfo
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- CN203287666U CN203287666U CN2013202434650U CN201320243465U CN203287666U CN 203287666 U CN203287666 U CN 203287666U CN 2013202434650 U CN2013202434650 U CN 2013202434650U CN 201320243465 U CN201320243465 U CN 201320243465U CN 203287666 U CN203287666 U CN 203287666U
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Abstract
The utility model discloses a liquid crystal lens and a stereo display device applying the liquid crystal lens. The liquid crystal lens comprises a plurality of liquid crystal lens units of the same structure. Each liquid crystal lens unit comprises a first substrate, a first electrode which is arranged on the first substrate, a dielectric layer, a first alignment film and two third electrodes, wherein the first electrode comprises a plurality of strip-shaped electrodes which are arranged at certain intervals in parallel, and one strip-shaped electrode is shared by every two adjacent liquid crystal lens units; the dielectric layer is arranged on the first substrate, covers the strip-shaped electrodes and is stuffed between the strip-shaped electrodes; the first alignment film is arranged on the dielectric layer; the two third electrodes are arranged on the dielectric layer and located between the dielectric layer and the first alignment layer, and the two third electrodes are arranged at the corresponding positions of the strip-shaped electrodes on the two opposite edges in the corresponding liquid crystal lens units and extend in the direction parallel to the corresponding strip-shaped electrodes. The utility model further discloses the stereo display device applying the liquid crystal lens.
Description
Technical field
The utility model relates to stereo display technique, relates in particular to a kind of liquid crystal lens and applies the 3 d display device of 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 apply the driving voltage that varies in size on Different electrodes, thereby form the vertical electric field with varying strength between two plate bases, to drive Liquid Crystal Molecules Alignment, form varifocal liquid crystal lens.Therefore, the voltage that only needs to control on 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 that free stereo shows and 2D/3D freely switches.
As shown in Figure 1, it is a kind of structural representation of common liquid crystal lens 100, and it contains a plurality of liquid crystal lens unit, and each liquid crystal lens unit has identical structure, only drawn two liquid crystal lens unit L1, L2 in Fig. 1, two liquid crystal lens unit L1, L2 structure are identical.Concretely, liquid crystal lens 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.Be provided with the first electrode 103, the first electrodes 103 and be generally transparent conductive material such as ITO or IZO etc. on first substrate 101, being provided with the second electrode 107, the second electrodes 107 on second substrate 102 is also transparent conductive material such as ITO or IZO.Within each liquid crystal lens unit, comprise as the first electrode 103 of liquid crystal lens unit L1 a plurality of strip electrode S11 that separate at certain intervals and be arranged in parallel, S12, S13 ..., S18, S19; The first electrode 103 of liquid crystal lens unit L2 comprises a plurality of strip electrode S19 that separate at certain intervals and be arranged in parallel for another example, S22, and S23 ..., S28, S29.
Launch explanation as an example of liquid crystal lens unit L1 example, the quantity of strip electrode is generally odd number (following as an example of nine electrodes example, describe), the width of a plurality of strip electrodes is respectively W (S11), W (S12), W (S13) ..., W (S18), W (S19) etc., generally speaking strip electrode possesses identical width, namely W (S11)=W (S12)=W (S13)=...=W (S18)=W (S19).Between two liquid crystal lens unit L1, L2, share same strip electrode S19 (S21).In addition, liquid crystal lens 100 also comprises that the dielectric material 104 that is arranged on the first electrode 103 is also dielectric layer, be arranged on the second alignment film 108 on the second electrode 107 and be arranged on the first alignment film 105 on dielectric material 104 and be used 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 100 also comprises for the peripheral sealed plastic box of liquid crystal material 106 encapsulation and is used for controlling the thick spacer (spacer) of liquid crystal cell etc.
As shown in Figure 2, when liquid crystal lens 100 need to carry out the 3D demonstration, at each strip electrode such as the S11 of the first electrode 103, S12, S13,, S18, S19(is take lens unit L1 as example) etc. on apply symmetrical voltage, the second electrode 107 is set to zero as common electrode voltage, with the positivity liquid crystal material (be △ ε=ε ∥-ε ⊥〉0, in formula, ε ∥ is the dielectric coefficient of long axis of liquid crystal molecule direction, 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 that namely applies on the central electrode S15 of liquid crystal lens unit L1 is minimum, and at the edge of liquid crystal lens unit L1 strip electrode S11, the voltage that applies on S19 is maximum, and the voltage on from L1 center, liquid crystal lens unit to each strip electrode of L1 edge, liquid crystal lens unit distributes with certain gradient.Because the voltage that applies at L1 edge, liquid crystal lens unit is maximum, edge strip electrode S11, the liquid crystal molecule of S19 position basically presents vertical direction and distributes, and less the closer to the center voltage of liquid crystal lens unit L1, so liquid crystal molecule can tend to the horizontal direction arrangement gradually.In each liquid crystal lens unit, because voltage symmetry distributes, liquid crystal material 106 presents the gradual change of refractive index along with the variation of electric field intensity, thereby the whole liquid crystal lens array with liquid crystal lens 100 possesses optical imagery characteristic preferably.
On the one hand, the gradually changed refractive index lens are GRIN LENS optical path difference formula △ nd=D
2/ (8f), △ n=n wherein
max-n (r)=n
e-n (r), n
eBe 106 pairs of extraordinary ray refractive indexes of liquid crystal material, refractive index n (r) can be different at diverse location as the function of position r.In as Fig. 2, the edge strip electrode S11 of liquid crystal lens unit L1, L2, S19, S21, S29 position due to the liquid crystal molecule of liquid crystal material 106 in vertical state, n (r)=n
o, and at the center of each liquid crystal lens unit strip electrode such as strip electrode S15, S25 position long axis of liquid crystal molecule, present horizontality, n (r)=n
eD is the size of each liquid crystal lens unit opening, and f is the focal length of liquid crystal lens unit, and d is that liquid crystal cell is thick.Hence one can see that to after liquid crystal material (△ n), focal length (f) are determined, the thick d of liquid crystal cell, along with the increase of lens openings D increases with quadratic relationship, affects the response time of liquid crystal lens 100.
On the other hand, each strip electrode S11 in each liquid crystal lens unit such as liquid crystal lens unit L1, S12, S13 ..., S18, after applying symmetrical voltage on S19,, by the voltage optimization setting, can obtain optical path difference in each lens unit and distribute.For crosstalking of reducing that liquid crystal lens 100 causes when 3D shows, avoid left (right side) eye image information to be perceived by right (left side) eye the quality that reduces stereo display respectively, need liquid crystal lens 100 to distribute and match with parabolic type lens light path difference.
Compared the difference that common liquid crystal lens 100 optical path differences distribute (analog result) and parabolic type lens light path difference distributes after optimization as Fig. 3.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 at two liquid crystal lens unit L1, L2 intersection (identifying with square frame in figure), liquid crystal lens 100 optical path differences distribute and still obviously depart from desirable para-curve, crosstalk more greatly thereby cause the 3 d display device that uses liquid crystal lens 100 to produce, reduced the stereo display effect and observed comfort level.
The utility model content
For above-mentioned problem, the utility model proposes corresponding solution, by the electrode pattern of predetermined structure is set on the first substrate at liquid crystal lens and (perhaps) second substrate, improve the response time of liquid crystal lens, required time when shortening liquid crystal lens and change between 2D display mode and 3D display mode, the smooth degree of raising picture; By on the substrate in liquid crystal lens bright dipping one side, barrier bed being set, what the problem that reduces to misfit because of optical path difference between liquid crystal lens unit and parabolic lens was brought crosstalks simultaneously, improves and watches comfort level.
The utility model is achieved in that a kind of liquid crystal lens, and it comprises a plurality of liquid crystal lens unit with same structure, and each liquid crystal lens unit comprises: first substrate; The first electrode, it is arranged on this first substrate, and this first electrode comprises a plurality of strip electrodes that separate at certain intervals and be arranged in parallel, and shares same strip electrode between adjacent two liquid crystal lens unit; Dielectric layer, it is arranged on this first substrate and covers these a plurality of strip electrodes, and is filled between these a plurality of strip electrodes; The first alignment film, it is arranged on this dielectric layer; Two third electrodes, it is arranged on this dielectric layer and between this dielectric layer and this first alignment film, and is arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and along being parallel to the direction that corresponding strip electrode extends, extends.
As the further improvement of such scheme, each liquid crystal lens unit also comprises: second substrate, and itself and this first substrate is over against setting; The second electrode, it is arranged on this second substrate on a side of this first substrate; The second alignment film, it is arranged on this second electrode; Liquid crystal material, it is packaged between this first alignment film and this second alignment film; Two bar shaped light shield layers, it is arranged on this second substrate on a side of this second electrode and between this second substrate and this second electrode, and be arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and along the direction that is parallel to corresponding strip electrode extension, extend.
Preferably, each liquid crystal lens unit also comprises two boss that the Filled Dielectrics material forms, these two boss are arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and extend along being parallel to the direction that corresponding strip electrode extends, these two boss be arranged on this dielectric layer and at this dielectric layer with accordingly between third electrode; This third electrode is arranged on corresponding boss, and covers on the outside surface of corresponding boss; The width of each bar shaped light shield layer is less than the breadth extreme of each boss.
Again preferably, each liquid crystal lens unit also comprises two pairs of connecting portions, these two pairs of connecting portions are arranged in this dielectric layer, and be arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, every pair of connecting portion also penetrates this dielectric layer with the third electrode with these relative both sides of dielectric layer and strip electrode electrical contact, makes third electrode and the strip electrode conducting of these relative both sides of dielectric layer.
Further, each third electrode extend along the surface of this dielectric layer with corresponding connecting portion electrical contact.
As the further improvement of such scheme, this second electrode comprises the first electrode part and two the second electrode parts, and these two second electrode parts are respectively over against these two bar shaped light shield layers, and with this first electrode part, is electrically insulated.
As the further improvement of such scheme, each bar shaped light shield layer is black.
As the further improvement of such scheme, this third electrode is boss structure, and its cross section is a kind of in trapezoidal, semiellipse type, triangle, semicircle.
As the further improvement of such scheme, the cross section of this boss is a kind of in trapezoidal, semiellipse type, triangle, semicircle.
The utility model also provides a kind of 3 d display device, and it comprises liquid crystal lens and the display panel that is used in conjunction with this liquid crystal lens, and this liquid crystal lens is above-mentioned any one described liquid crystal lens.This display panel shows to have left-eye image and the eye image of parallax, and this liquid crystal lens projects predetermined view field space with left-eye image and eye image.
Compared with prior art, adopt the beneficial effects of the utility model to be:
1, improve the response time: due to the liquid crystal lens first substrate and (or) be provided with the electrode pattern of predetermined structure on second substrate, simultaneously by suitable driving voltage is set, when liquid crystal lens is changed mutually between 2D display mode and 3D display mode, reduce the pass response time T of liquid crystal lens
off, open response time T
on, the response time of greatly improving liquid crystal lens, even still can realize the quick response of liquid crystal lens when larger liquid crystal cell is thick;
2, reduce crosstalk information: with common liquid crystal lens, compare, owing at each lens unit intersection, being provided with light shield layer, be used on the one hand preventing from adopting metal material to make the reflex that third electrode causes, can block simultaneously because of liquid crystal lens optical path difference and inconsistent the crosstalking of causing of parabolic lens optical path difference distribution.
Description of drawings
Fig. 1 is a kind of structural representation of common liquid crystal lens.
Fig. 2 is the schematic diagram of arranging of the liquid crystal molecule of liquid crystal lens under 3D demonstration situation in Fig. 1.
Fig. 3 is liquid crystal lens and the parabolic type lens light path difference distributional difference schematic diagram in Fig. 1.
The structural representation of the liquid crystal lens that Fig. 4 provides for the utility model the first embodiment.
Fig. 5 is the local enlarged diagram in Fig. 4.
Fig. 6 is the part three-dimensional exploded view of liquid crystal lens in Fig. 4.
Fig. 7 is the liquid crystal molecular orientation schematic diagram of liquid crystal lens under 3D demonstration situation in Fig. 4.
Fig. 8 is liquid crystal lens each liquid crystal lens unit gradually changed refractive index curve under the 3D show state in Fig. 7.
Fig. 9 is that in Fig. 7, liquid crystal lens is shown to the 3D demonstration view of response fast from 2D.
The structural representation of the liquid crystal lens that Figure 10 provides for the utility model the second embodiment.
Figure 11 is the local enlarged diagram in Figure 10.
The structural representation of the liquid crystal lens that Figure 12 provides for the utility model the 3rd embodiment.
Figure 13 is the local enlarged diagram in Figure 12.
The structural representation of the liquid crystal lens that Figure 14 provides for the utility model the 4th embodiment.
Figure 15 is the local enlarged diagram in Figure 14.
Figure 16 is that in Figure 14, liquid crystal lens is shown to the 3D demonstration view of response fast from 2D.
Figure 17 is the illustrate schematic diagram of predetermined altitude in each embodiment with the reservation shape cross section, and wherein, in figure, upper row is the boss exterior cross-section of other shape Filled Dielectrics materials formation, and lower row is the exterior cross-section that arranges after third electrode.
Figure 18 is liquid crystal lens liquid crystal molecular orientation analog result schematic diagram under the 3D display mode in Fig. 4.
Figure 19 is liquid crystal lens liquid crystal molecular orientation analog result schematic diagram under the 2D display mode in Fig. 4.
Figure 20 is the schematic diagram of 3 d display device under the 3D display mode of liquid crystal lens in application drawing 4.
Figure 21 is the schematic diagram of 3 d display device under the 2D display mode of liquid crystal lens in application drawing 4.
Embodiment
, in order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 4 is the first embodiment sectional view of the utility model liquid crystal lens.Liquid crystal lens 1000 contains a plurality of liquid crystal lens unit, and each liquid crystal lens unit has identical structure, has only drawn two liquid crystal lens unit L1, L2 in Fig. 4, and two liquid crystal lens unit L1, L2 structure are identical.Concretely, liquid crystal lens 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.Be provided with the first electrode 1003, the first electrodes 1003 and be generally transparent conductive material such as ITO or IZO etc. on first substrate 1001.Within each liquid crystal lens unit, be included in as the first electrode 1003 of liquid crystal lens unit L1 a plurality of strip electrode S11 that directions X separates at certain intervals, extends and be arranged in parallel along Y-direction, S12, S13 ..., S18, S19; The first electrode 1003 of liquid crystal lens unit L2 is included in a plurality of strip electrode S19 that directions X separates at certain intervals, extends and be arranged in parallel along Y-direction, S22, S23 for another example,, S28, S29, wherein, directions X, Y-direction, Z direction are mutually vertical in twos, form the WYZ three-dimensional planar.
Launch explanation as an example of liquid crystal lens unit L1 example, the quantity of strip electrode is generally odd number (following as an example of nine electrodes example, describe), the width of a plurality of strip electrodes is respectively W (S11), W (S12), W (S13) ..., W (S18), W (S19) etc., generally speaking strip electrode possesses identical width, namely W (S11)=W (S12)=W (S13)=...=W (S18)=W (S19).Between two liquid crystal lens unit L1, L2, share same strip electrode S19 (S21).Be provided with dielectric layer 1004 on the first electrode 1003, can be the materials such as silicon nitride, dielectric layer 1004 all covers the first electrode 1003.
please in conjunction with Fig. 5 and Fig. 6, be provided with the boss 1005 that the Filled Dielectrics material forms on dielectric layer 1004, the Filled Dielectrics material can be various resins, be used to form the boss 1005 that possesses certain altitude and given shape cross section, in this first embodiment, boss 1005 has trapezoid cross section, and 1005 of boss are formed on the correspondence position of the two edges electrode of each liquid crystal lens unit, as be formed on two edges electrode S11 and the S19 correspondence position of liquid crystal lens unit L1 and two edges electrode S21 and the D29 correspondence position that is formed on liquid crystal lens unit L2, be position a1 in Fig. 4, a2, the place of a3.Be provided with third electrode 1006 on boss 1005,1006 of third electrodes are formed on boss 1005 and along Y-direction and extend, in the first embodiment, 1006 of third electrodes are formed on upper base and the waist (two hypotenuses) of the boss 1005 of trapezoid cross section, and third electrode 1006 can be metal material or transparent conductive material such as ITO or the IZO etc. that adopt the techniques such as sputter, etching to form.Being provided with the first both alignment layers 1007, the first both alignment layers 1007 on third electrode 1006 and dielectric layer 1004 can be the materials such as polyimide.
Please continue with reference to Fig. 4, in each liquid crystal lens unit, be provided with two bar shaped light shield layers 1008 on second substrate 1002, be located at the correspondence position of the strip electrode of relative two edges in corresponding liquid crystal lens unit, and towards being parallel to direction that corresponding strip electrode extends, extending and be used for blocking crosstalking that position, adjacent lcd lens unit boundary causes because optical path difference misfits, the width of each bar shaped light shield layer 1008 is less than the breadth extreme of each third electrode 1006.
The light screening material of bar shaped light shield layer 1008 is generally black organic resin or cadmium oxide etc., bar shaped light shield layer 1008 forms positions also at the two edges of each liquid crystal lens unit electrode correspondence position, is used for blocking crosstalking that each position, boundary, liquid crystal lens unit causes because optical path difference misfits.Bar shaped light shield layer 1008 should be not less than boss 1005 projected size on directions X that third electrode 1006 forms, i.e. third electrode 1006 base full-sizes at the width of directions X.Being provided with the second electrode 1009, the second electrodes 1009 on black bar shaped light shield layer 1008 is the face electrode, and material is transparent conductive material such as ITO or IZO.Be provided with the second both alignment layers 1010 on the face electrode.The first both alignment layers 1007 and the second both alignment layers 1010 are used for controlling liquid crystal molecular orientation, and alignment direction is the antiparallel setting, and even the first both alignment layers 1007 is along the directions X orientation, and the second both alignment layers 1010 is along-directions X orientation.Liquid crystal material 1011 is encapsulated between first substrate 1001 and second substrate 1002.In addition, although do not draw in Fig. 4, liquid crystal lens 1000 also comprises for the peripheral sealed plastic box of liquid crystal material 1011 encapsulation and is used for controlling the thick spacer (spacer) of liquid crystal cell etc.
Fig. 7 is the utility model liquid crystal lens the first embodiment liquid crystal molecular orientation schematic diagram under the 3D display mode.take liquid crystal lens unit L1 as example, can make the second electrode 1009 be set to zero as common electrode voltage, voltage V (S11) on each first strip electrode=V (S19)〉V (S12)=V (S18)〉V (S13)=V (S17)〉V (S14)=V (S16)〉V (S15), the voltage that namely applies on the strip electrode S15 of L1De center, liquid crystal lens unit is minimum, and at the two edges of liquid crystal lens unit L1 electrode S11, the voltage that applies on S19 is maximum, voltage on from L1 center, liquid crystal lens unit to each strip electrode of L1 two edges, liquid crystal lens unit distributes with certain gradient, driving voltage on third electrode 1006 can be made as V (1006)=V (S11)=V (S19).due to the electrode S11 at the first electrode 1003, the voltage that applies on S19 and third electrode 1006 is maximum, the position a1 of three boss 1005 in Fig. 7, a2, the liquid crystal molecule at a3 top all presents vertical direction and distributes, start at a certain angle to tilt at boss 1005 hypotenuse liquid crystal molecules, the angle of liquid crystal molecules tilt arranges relevant to angle and the voltage of boss 1005, and it is less the closer to the center voltage of liquid crystal lens unit, therefore liquid crystal molecule can tend to the horizontal direction arrangement gradually, cause refractive index in each liquid crystal lens unit to present ascending, descending gradual change trend again, as shown in Figure 8.
When not applying driving voltage on the first electrode 1003, the second electrode 1009 and the third electrode 1006 of liquid crystal lens, as shown in Figure 4, the molecular long axis of the liquid crystal molecule of liquid crystal material 1011 is the level of state, and is parallel with directions X, and this moment, whole liquid crystal lens apparatus presented the 2D show state; After applying respectively different driving voltage formation liquid crystal lens on the first electrode 1003 at liquid crystal lens, the second electrode 1009 and third electrode 1006, whole liquid crystal lens apparatus presents the 3D show state, and in liquid crystal lens, the distribution of liquid crystal molecule as shown in Figure 7.
In 2D shows and to show to 3D the process that changes, liquid crystal lens open response time T
onThick with liquid crystal cell, the factor analysis such as the liquid crystal material coefficient of viscosity, driving voltage.compare with common liquid crystal lens, formed boss 1005 (the position a1 in as Fig. 7 with certain altitude due to the boundary of liquid crystal lens in each liquid crystal lens unit, a2, a3) and be provided with third electrode 1006 on boss 1005, even the two edges electrode of the driving voltage of third electrode 1006 and each liquid crystal lens unit such as liquid crystal lens unit L1, the two edges electrode S11 of L2, S19 (S21), S29 is size equally, be V (1006)=V (s11)=V (s19)=V (s29), the effective liquid crystal cell in position is thick obviously reduces due to boss 1005, the electric field intensity grow, also can make liquid crystal molecule realize faster rotation from from horizontality (2D display mode) to plumbness (3D display mode)., if apply larger driving voltage on third electrode 1006, make V (1006)〉V (s11)=V (s19)=V (s29), the time that more can accelerate the liquid crystal molecule response, realize that 2D shows the transformation that shows to 3D.
Show in the process that changes to the 2D demonstration at 3D, common liquid crystal lens is owing in the liquid crystal molecule both sides, there is no pressure reduction, liquid crystal molecule is returned to the position (2D display mode) that molecular long axis is parallel to horizontal direction from certain position of (3D display mode) after rotating can only rely on the liquid crystal molecule elastic-restoring force, causes closing response time T
offVery large, substantially determined the whole response time (T=T of liquid crystal lens
off+ T
on≈ T
off).With reference to Fig. 9, when needs 3D shows to 2D demonstration transformation, voltage on liquid crystal lens the first electrode 1003 and the second electrode 1009 is all removed, and apply opposite polarity voltage on the diverse location of third electrode 1006, as position a1 in Fig. 9, a3 applies+V voltage, and apply in the a2 position-V voltage, driving voltage so periodically is set, that is to say, voltage on the second electrode 1009 and each strip electrode is all removed, and apply opposite polarity voltage on adjacent third electrode 1006.Position a1 due to three boss 1005 in liquid crystal lens unit L1, L2, a2, a3 possess certain height, form very strong horizontal direction electric field, the liquid crystal molecule of diverse location can be pushed fast to the initial position of horizontal direction, greatly be reduced to close response time T
off, make liquid crystal lens conversion fast between 2D demonstration and 3D demonstration.
Figure 10 is the utility model liquid crystal lens the second embodiment sectional view, please in conjunction with Figure 11, what the first embodiment of the second embodiment and Fig. 4 was different is, Filled Dielectrics boss that material forms 2005 (position c1 in Figure 10 at liquid crystal lens 2000, c2, the place of c3) be provided with two connecting portions 2012 on both sides, base dielectric layer 2004, driving method is with the first embodiment under the 3D display mode.Each liquid crystal lens unit also comprises two pairs of connecting portions 2012, these two pairs of connecting portions 2012 are arranged in this dielectric layer 2004, and be located at the correspondence position of the strip electrode of relative two edges in corresponding liquid crystal lens unit, every pair of connecting portion 2012 also penetrates this dielectric layer 2004 with third electrode 2006 and strip electrode electrical contact with these dielectric layer 2004 relative both sides, makes the third electrode 2006 and strip electrode conducting of these dielectric layer 2004 relative both sides.As shown in figure 11, each third electrode 2006 extend along the surface of this dielectric layer 2004 with corresponding connecting portion 2012 electrical contacts.
Represent the position of a pair of connecting portion 2012 in Figure 11 with position h1, h2, position h1, h2 are positioned at the two edges strip electrode S11 of liquid crystal lens unit L1, L2, S19 (S21) and S29 correspondence position, and with each edge strip electrode S11, the strip electrode center left-right symmetric of S19 (S21) and S29 distributes.By forming a pair of connecting portion 2012 on position h1, h2 at dielectric layer 2004, after forming third electrode 2006, third electrode 2006 and the first electrode 2003 can electrically conduct by corresponding connecting portion 2012, need not directly to apply driving voltage on third electrode 2006.Namely after applying certain driving voltage on the first electrode 2003, the driving voltage V (2006) that applies on third electrode 2006=V (S11)=V (S19)=V (S29), make the driving of whole liquid crystal lens become simpler.
Figure 12 is the utility model liquid crystal lens the 3rd embodiment sectional view.Please in conjunction with Figure 13, the 3rd embodiment and Fig. 4 namely the first embodiment different be, the formed boss 1005 of the liquid crystal lens 1000 of the first embodiment (position d1 in Figure 13, d2, d3) need not the working medium packing material, thereby form the liquid crystal lens 3000 of the 3rd embodiment but directly use electrode material to form third electrode 3006, driving method is with the first embodiment under the 3D display mode.Certainly, this embodiment also can form connecting portion similarly with the second embodiment on dielectric layer 3004, thereby third electrode 3006 and the first electrode 3003 are directly electrically conducted, and makes driving method become simpler.
Adopting the Filled Dielectrics material to form boss is in order to facilitate the process forming of third electrode 3006, if directly adopt third electrode 3006 to form boss, in the technique of third electrode 3006 forms, need to expend heavy film of relatively long time, the shaping of restriction third electrode 3006.
Figure 14 is the utility model liquid crystal lens the 4th embodiment sectional view.Please in conjunction with Figure 15, after on the second substrate 4002 of liquid crystal lens 4000, the bar shaped light shield layer 4008 of black being set, then the second electrode 4009 is set on black bar shaped light shield layer 4008, from Fig. 4 be the utility model the first embodiment different be, the second electrode 4009 comprises two parts, i.e. the first electrode part 40091 and two the second electrode parts 40092, these two the second electrode parts 40092 are respectively over against two bar shaped light shield layers 4008, and with predetermined gap and this first electrode part 40091, separate and with this first electrode part 40091, be electrically insulated.Be arranged between adjacent black bar shaped light shield layer 4008 the first electrode part 40091 and over against the second electrode part 40092 of each black bar shaped light shield layer 4008, separate with certain gap between the first electrode part 40091 and the second electrode part 40092, realize the first electrode part 40091 and the second electrode part 40092 electrically not conductings of electrode, be convenient to apply respectively different driving voltages on the first electrode part 40091 and the second electrode part 40092.
The 4th embodiment can better shorten the switching time between 2D demonstration and 3D demonstration, accelerates the liquid crystal molecule response.As shown in figure 16, when 2D showed, the voltage on all first electrode 4003, the second electrodes 4009 (comprising the first electrode part 40091 and the second electrode part 40092) and third electrode 4006 all was set to zero.
When 2D shows to 3D demonstration transformation, the voltage that applies left-right symmetric and with certain gradient, distribute on the first electrode 4003 of each liquid crystal lens unit (in liquid crystal lens unit L1); The second electrode 4009 (comprising the first electrode part 40091 and the second electrode part 40092) all is set to common electrode, and voltage is zero; All apply same driving voltage on third electrode 4006, the driving voltage of third electrode 4006 can be greater than or equal to the maximum drive voltage of each lens unit, i.e. V (4006) 〉=V (S11)=V (S19)=V (S29).Owing to comparing common liquid crystal lens structure in the thick reduction greatly of the boss 4005 effective liquid crystal cells in position, electric field intensity is larger, make liquid crystal molecule realize faster rotation from from horizontality (2D display mode) to plumbness (3D display mode), shorten and open response time T
on
Show in the process that changes to the 2D demonstration at 3D, common liquid crystal lens is owing in the liquid crystal molecule both sides, there is no pressure reduction, liquid crystal molecule is returned to the position (2D display mode) that molecular long axis is parallel to horizontal direction from certain position of (3D display mode) after rotating can only rely on the liquid crystal molecule elastic-restoring force, causes closing response time T
offVery large, substantially determined the whole response time (T=T of liquid crystal lens
off+ T
on≈ T
off).Continuation is with reference to Figure 16,3D shows while to 2D, showing transformation, voltage on the first electrode part 40091 of liquid crystal lens the first electrode 4003 and the second electrode 4009 is all removed, and apply opposite polarity voltage on the diverse location of third electrode 4006, position e1 in Figure 16 for example, the e3 place applies+V voltage, and applies at position e2-V voltage, and driving voltage so periodically is set.Similar, also apply periodically opposite polarity voltage on the second electrode part 40092 of the second electrode 4009, for example, the position e1 of two boss 4005, apply+V on the second electrode part 40092 of e3 correspondence position, and apply-V on the second electrode part 40092 of the position of boss 4005 e2 correspondence position.
That is to say, when liquid crystal lens need to show to 2D from the 3D demonstration, the first electrode part 40091 of the second electrode 4009 and the voltage on each strip electrode are all removed, and apply opposite polarity voltage on adjacent third electrode 4006, and also apply opposite polarity voltage on the second adjacent electrode part 40092, the voltage that applies identical polar over against third electrode 4006 and second electrode part 40092 of layout.
Liquid crystal lens inner convex platform 4005 possesses certain height in addition, forms very strong horizontal direction electric field, the liquid crystal molecule of diverse location can be pushed fast to the initial position of horizontal direction, greatly reduces to close response time T
off, make liquid crystal lens conversion fast between 2D demonstration and 3D demonstration.In front in each embodiment of described liquid crystal lens, the boss cross section that forms in the liquid crystal lens unit is trapezoidal, in fact formed boss can be other kinds shape, profile sectional view after Figure 17 has enumerated the boss that the Filled Dielectrics material in several difformities cross section forms and third electrode is set, as trapezoidal, semiellipse type, triangle, semicircle etc., but the boss shape is not limited to this.
Mention in Fig. 3, the difference that common liquid crystal lens distributes due to optical path difference and parabolic lens, thus the information that causes right and left eyes to be seen crosstalking affect the stereo display effect and watches comfort level.In each embodiment of the utility model, be provided with black bar shaped light shield layer at each liquid crystal lens unit intersection, if can be used on the one hand preventing the reflection that the lug boss position third electrode causes while adopting metal material to make, can be used for blocking on the other hand the crosstalk information of right and left eyes, play and reduce the purpose of crosstalking.
See also as Figure 18 and Figure 19,, based on the first embodiment, simulated the distribution of liquid crystal molecule under 3D and 2D display mode.As shown in figure 18, under the 3D display mode, owing to having applied symmetrical voltage in each lens unit, the variation that the liquid crystal molecule anglec of rotation is progressive, refractive index realizes progressive distribution; As shown in figure 19, under the 2D display mode, liquid crystal molecule all presents the arrangement of horizontal direction.
Seeing also as Figure 20 and Figure 21, is the liquid crystal lens 3 d display device schematic diagram under 3D and 2D display mode respectively.As shown in figure 21, under the 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; As shown in figure 20, under the 3D display mode, because driving voltage in each liquid crystal lens unit is left-right symmetric, distribute, each liquid crystal lens unit plays the function of similar convex lens, realizes that the right and left eyes image separates, thus the stereoeffect of watching.
To sum up each embodiment is described, and liquid crystal lens of the present utility model and the advantage of applying the 3 d display device of this liquid crystal lens are:
1, improve the response time: due to the liquid crystal lens first substrate and (or) be provided with the electrode pattern of predetermined structure on second substrate, simultaneously by suitable driving voltage is set, when liquid crystal lens is changed mutually between 2D display mode and 3D display mode, reduce the pass response time T of liquid crystal lens
off, open response time T
on, the response time of greatly improving liquid crystal lens, even still can realize the quick response of liquid crystal lens when larger liquid crystal cell is thick;
2, reduce crosstalk information: with common liquid crystal lens, compare, owing at each lens unit intersection, being provided with light shield layer, be used on the one hand preventing from adopting metal material to make the reflex that third electrode causes, can block simultaneously because of liquid crystal lens optical path difference and inconsistent the crosstalking of causing of parabolic lens optical path difference distribution.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. liquid crystal lens, it comprises a plurality of liquid crystal lens unit with same structure, each liquid crystal lens unit comprises: first substrate; The first electrode, it is arranged on this first substrate, and this first electrode comprises a plurality of strip electrodes that separate at certain intervals and be arranged in parallel, and shares same strip electrode between adjacent two liquid crystal lens unit; Dielectric layer, it is arranged on this first substrate and covers these a plurality of strip electrodes, and is filled between these a plurality of strip electrodes; The first alignment film, it is arranged on this dielectric layer;
It is characterized in that, each liquid crystal lens unit also comprises: two third electrodes, it is arranged on this dielectric layer and between this dielectric layer and this first alignment film, and be arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and along the direction that is parallel to corresponding strip electrode extension, extend.
2. liquid crystal lens as claimed in claim 1, is characterized in that, each liquid crystal lens unit also comprises: second substrate, and itself and this first substrate is over against setting; The second electrode, it is arranged on this second substrate on a side of this first substrate; The second alignment film, it is arranged on this second electrode; Liquid crystal material, it is packaged between this first alignment film and this second alignment film; Two bar shaped light shield layers, it is arranged on this second substrate on a side of this second electrode and between this second substrate and this second electrode, and be arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and along the direction that is parallel to corresponding strip electrode extension, extend.
3. liquid crystal lens as claimed in claim 2, it is characterized in that, each liquid crystal lens unit also comprises two boss that the Filled Dielectrics material forms, these two boss are arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, and extend along being parallel to the direction that corresponding strip electrode extends, these two boss be arranged on this dielectric layer and at this dielectric layer with accordingly between third electrode; This third electrode is arranged on corresponding boss, and covers on the outside surface of corresponding boss; The width of each bar shaped light shield layer is less than the breadth extreme of each boss.
4. liquid crystal lens as claimed in claim 3, it is characterized in that, each liquid crystal lens unit also comprises two pairs of connecting portions, these two pairs of connecting portions are arranged in this dielectric layer, and be arranged in the corresponding liquid crystal lens unit correspondence position of the strip electrode of two edges relatively, every pair of connecting portion also penetrates this dielectric layer with the third electrode with these relative both sides of dielectric layer and strip electrode electrical contact, makes third electrode and the strip electrode conducting of these relative both sides of dielectric layer.
5. liquid crystal lens as claimed in claim 4, is characterized in that, each third electrode extend along the surface of this dielectric layer with corresponding connecting portion electrical contact.
6. liquid crystal lens as described in any one in claim 2 to 5, it is characterized in that, this second electrode comprises the first electrode part and two the second electrode parts, and these two second electrode parts are respectively over against these two bar shaped light shield layers, and with this first electrode part, is electrically insulated.
7. liquid crystal lens as claimed in claim 2, is characterized in that, each bar shaped light shield layer is black.
8. liquid crystal lens as claimed in claim 1, is characterized in that, this third electrode is boss structure, and its cross section is a kind of in trapezoidal, semiellipse type, triangle, semicircle.
9. liquid crystal lens as claimed in claim 3, is characterized in that, the cross section of this boss is a kind of in trapezoidal, semiellipse type, triangle, semicircle.
10. 3 d display device, it comprises liquid crystal lens and the display panel that is used in conjunction with this liquid crystal lens, it is characterized in that, this liquid crystal lens is the described liquid crystal lens of any one in claim 1 to 9, this display panel shows to have left-eye image and the eye image of parallax, and this liquid crystal lens projects predetermined view field space with left-eye image and eye image.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202434650U CN203287666U (en) | 2013-05-06 | 2013-05-06 | Liquid crystal lens and stereo display device applying liquid crystal lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202434650U CN203287666U (en) | 2013-05-06 | 2013-05-06 | Liquid crystal lens and stereo display device applying liquid crystal lens |
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| CN203287666U true CN203287666U (en) | 2013-11-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235462A (en) * | 2013-05-06 | 2013-08-07 | 中航华东光电有限公司 | Liquid crystal lens, driving method and three-dimensional display device of liquid crystal lens during three-dimensional display |
| CN103744248A (en) * | 2013-11-28 | 2014-04-23 | 深圳市华星光电技术有限公司 | Display device and liquid crystal box lens panel |
| WO2015078033A1 (en) * | 2013-11-28 | 2015-06-04 | 深圳市华星光电技术有限公司 | Display device and liquid crystal cell lens panel |
| WO2015100934A1 (en) * | 2013-12-30 | 2015-07-09 | 京东方科技集团股份有限公司 | Liquid crystal lens, manufacturing method therefor and display device |
| CN107561791A (en) * | 2017-09-22 | 2018-01-09 | 京东方科技集团股份有限公司 | The manufacture method of liquid crystal lens and liquid crystal lens, display device |
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2013
- 2013-05-06 CN CN2013202434650U patent/CN203287666U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235462A (en) * | 2013-05-06 | 2013-08-07 | 中航华东光电有限公司 | Liquid crystal lens, driving method and three-dimensional display device of liquid crystal lens during three-dimensional display |
| CN103235462B (en) * | 2013-05-06 | 2015-09-30 | 中航华东光电有限公司 | Liquid crystal lens and driving method, 3 d display device when carrying out 3D display |
| CN103744248A (en) * | 2013-11-28 | 2014-04-23 | 深圳市华星光电技术有限公司 | Display device and liquid crystal box lens panel |
| WO2015078033A1 (en) * | 2013-11-28 | 2015-06-04 | 深圳市华星光电技术有限公司 | Display device and liquid crystal cell lens panel |
| WO2015078032A1 (en) * | 2013-11-28 | 2015-06-04 | 深圳市华星光电技术有限公司 | Display device and liquid crystal cell lens panel |
| WO2015100934A1 (en) * | 2013-12-30 | 2015-07-09 | 京东方科技集团股份有限公司 | Liquid crystal lens, manufacturing method therefor and display device |
| US9720248B2 (en) | 2013-12-30 | 2017-08-01 | Boe Technology Group Co., Ltd. | Liquid crystal lens, fabrication method thereof and display device |
| CN107561791A (en) * | 2017-09-22 | 2018-01-09 | 京东方科技集团股份有限公司 | The manufacture method of liquid crystal lens and liquid crystal lens, display device |
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