CN102768448B - Liquid crystal lens and 3 d display device - Google Patents
Liquid crystal lens and 3 d display device Download PDFInfo
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- CN102768448B CN102768448B CN201210244791.3A CN201210244791A CN102768448B CN 102768448 B CN102768448 B CN 102768448B CN 201210244791 A CN201210244791 A CN 201210244791A CN 102768448 B CN102768448 B CN 102768448B
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Abstract
The invention discloses a kind of liquid crystal lens, it comprises: two electrode structures be oppositely arranged, and each electrode structure comprises two electrode groups respectively, is not electrically connected between two the electrode groups belonging to same electrode structure; Liquid crystal layer, is arranged between described two electrode structures, and comprises the multiple liquid crystal molecules along the arrangement of initial arrangement direction; Wherein, produce electric field between two the electrode groups belonging to same electrode structure, described electric field, for changing the orientation of described liquid crystal molecule, has lens effect to make described liquid crystal layer.The invention also discloses a kind of 3 d display device.Electrode drive of the present invention controls simple, and liquid crystal lens index distribution is desirable.
Description
Technical field
The present invention relates to liquid crystal technology field, particularly relate to liquid crystal lens and 3 d display device.
Background technology
The eyes of people are in same plane substantially, but have certain spacing between two, therefore watch object time sight line can form an intersecting angle, angle is larger, stereoscopic sensation and distance perspective stronger.Due to the existence of intersecting angle, the picture that eyes are seen is not identical, namely creates " parallax ", and the picture that two width have parallax obtains complete stereopsis after brain process, in other words three-dimensional (three-dimensional is called for short 3D) image.Bore hole need not be worn 3D glasses in other words and also can see and draw 3D effect.
Stereoscopic display device utilizes the feature of human eye parallax to show 3D effect.The picture with parallax outputs on three-dimensional display by usual stereoscopic display device, then this stereoscopic parallax picture is sent to the right and left eyes of beholder, and then synthetic stereo image.
In current bore hole stereo display technique, normally utilize grating to send the picture with parallax the right and left eyes of beholder to, and lenticulation is exactly wherein a kind of.Now along with the development of liquid crystal technology, liquid crystal material is widely used in various field, and using liquid crystal material to realize lenticulation also becomes a kind of trend, such as uses liquid crystal material to produce liquid crystal lens (LiquidCrystalLens is called for short LCLens).
Liquid crystal lens be a kind of utilize liquid crystal molecule birefringent characteristic and with Electric Field Distribution change alignment characteristics allow light beam focus on or the optical module dispersed.Liquid crystal lens changes the orientation of liquid crystal molecule by changing operating voltage, and then realizes the effect of focusing/zooming distance, and a frivolous characteristic large advantage especially of liquid crystal lens, it can reach effective optical zoom effect in little space.
Refer to Fig. 1, it is the structural representation of a kind of liquid crystal lens of prior art.
Liquid crystal lens comprises first substrate 1, first electrode structure 2, first both alignment layers 3, liquid crystal layer 4, second both alignment layers 5, second electrode structure 6 and second substrate 7 successively.
Wherein, the first electrode structure 2 is arranged on first substrate 1, comprises multiple first strip electrode 21.The spaced setting of multiple first strip electrode 21.
Second electrode structure 6 is arranged on second substrate 7.Wherein, the second electrode structure 6 is face electrode structure.
Liquid crystal layer 4 is arranged between the first electrode structure 2 and the second electrode structure 6, and the first both alignment layers 3 is arranged between liquid crystal layer 4 and the first electrode structure 2, and the second both alignment layers 5 is arranged between liquid crystal layer 4 and the second electrode structure 6.The liquid crystal molecule along the arrangement of initial arrangement direction is included in liquid crystal layer 4.First both alignment layers 3 and the second both alignment layers 5 cooperatively interact liquid crystal molecule is arranged along initial arrangement direction.
Multiple first strip electrode 21 applies suitable gradient voltage V1, V2, V3 and V4, the second electrode structure 6 applies no-voltage.Like this, form corresponding voltage difference at multiple first strip electrode 21 with between the second electrode structure 6, the plurality of voltage difference produces electric field in liquid crystal layer 4.The orientation under the effect of electric field of liquid crystal molecule in liquid crystal layer 4 changes, according to the arrangement situation of liquid crystal molecule in liquid crystal layer 4, the deflection angle of the liquid crystal molecule of zones of different is different, the refractive index of liquid crystal molecule is made to present parabolic progression change, and then the lens formed centered by V1 or V4, reach and make the lensed effect of liquid crystal layer 4 tool.
But above-mentioned liquid crystal lens 4 forms the index distribution of gradual change by many group gradient voltage V1, V2, V3 and V4, and drived control is complicated.
Center X relies on the orientation of the first both alignment layers 3 and the second both alignment layers 5 to make liquid crystal molecule be in state arranged in parallel, when liquid crystal layer large thick center liquid crystal molecules parallel degree poor, cause liquid crystal lens index distribution undesirable.
Refer to Fig. 2, it is the structural representation of the another kind of liquid crystal lens of prior art.
Be with the difference shown in Fig. 1, the first substrate of the second liquid crystal lens does not have electrode structure (or have electrode structure, but ground connection or not making alive), second substrate is provided with electrode structure 8, dotted line is the electric field formed, the principle forming liquid crystal lens is also similar, no longer describes at this.Problem existing for it is also that center relies on the orientation of both alignment layers to make liquid crystal molecule be in state arranged in parallel, when liquid crystal layer large thick center liquid crystal molecules parallel degree poor, cause liquid crystal lens index distribution undesirable.
Summary of the invention
For solving the index distribution of above-mentioned liquid crystal lens by many group gradient voltage formation gradual changes, drived control is complicated, and when liquid crystal layer large thick center liquid crystal molecules parallel degree poor, cause the problem that liquid crystal lens index distribution is undesirable, the present invention adopts following technical scheme:
The invention provides a kind of liquid crystal lens, it comprises:
Two electrode structures be oppositely arranged, each electrode structure comprises two electrode groups respectively, mutually insulated between two the electrode groups belonging to same electrode structure;
Liquid crystal layer, is arranged between described two electrode structures, and comprises the multiple liquid crystal molecules along the arrangement of initial arrangement direction;
Wherein, each electrode structure has at least one electrode group to be applied with non-zero voltage, and coating-forming voltage difference produce electric field between two the electrode groups belonging to same electrode structure, described electric field, for changing the orientation of described liquid crystal molecule, has lens effect to make described liquid crystal layer.
The present invention also provides a kind of 3 d display device, and it comprises above-mentioned liquid crystal lens.
The present invention adopts two spaced electrode structures, each electrode structure comprises two electrode groups respectively, only need to apply voltage to form lens to electrode group, type of drive is simple, and electrode group switching centre place direction of an electric field is laterally, therefore the center liquid crystal molecule arrangement depth of parallelism is high, and index distribution is desirable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of liquid crystal lens of prior art.
Fig. 2 is the structural representation of the another kind of liquid crystal lens of prior art.
Fig. 3 is the structural representation of a kind of liquid crystal lens of the present invention.
Fig. 4 is a kind of structural representation of the first electrode structure shown in Fig. 3.
Fig. 5 is a kind of structural representation of the second electrode structure shown in Fig. 3.
Fig. 6 is the first electrode structure of a kind of liquid crystal lens of the present invention and the diagrammatic cross-section of the second electrode structure.
Fig. 7 is the another kind of structural representation of the first electrode structure shown in Fig. 3.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
Refer to Fig. 3, it is the structural representation of a kind of liquid crystal lens of the present invention.
A kind of liquid crystal lens of the present invention, it comprises: first substrate 11, first electrode structure 12, first both alignment layers 13, liquid crystal layer 14, second both alignment layers 15, second electrode structure 16 and second substrate 17.
Wherein, the first electrode structure 12 is arranged on first substrate 11, comprises multiple first strip electrode 121.The spaced setting of multiple first strip electrode 121, two adjacent the first strip electrodes 121 are not electrically connected mutually, and the first strip electrode 121 parting bead is electrically connected mutually, obtain the first strip electrode group 121a and the first strip electrode group 121b, as shown in Figure 4.Mutually be not electrically connected between first strip electrode group 121a and the first strip electrode group 121b.
Second electrode structure 16 is arranged on second substrate 17, comprise multiple second strip electrode 161, second strip electrode 161 and the first strip electrode 121 arranged in parallel.Second electrode structure 16 and the first electrode structure 12 are oppositely arranged.The spaced setting of multiple second strip electrode 161, two adjacent the second strip electrodes 161 are not electrically connected mutually, and the second strip electrode 161 parting bead is electrically connected mutually, obtain the second strip electrode group 161a and the second strip electrode group 161b, as shown in Figure 5.Mutually be not electrically connected between second strip electrode group 161a and the second strip electrode group 161b.Second strip electrode group 161a and the first strip electrode group 121a is oppositely arranged, or just to setting; Second strip electrode group 161b and the first strip electrode group 121 are oppositely arranged, or just to setting.First strip electrode group 121a, the first strip electrode group 121b, the second strip electrode group 161a and the second strip electrode group 161b are transparency conducting layer, for example can be indium tin oxide (IndiumTinOxide, be called for short ITO) or indium-zinc oxide (IndiumZincOxide, be called for short IZO), do not enumerate herein.
Liquid crystal layer 14 is arranged between the first electrode structure 12 and the second electrode structure 16, and it comprises the multiple liquid crystal molecules along the arrangement of initial arrangement direction.First both alignment layers 13 is arranged between liquid crystal layer 14 and the first electrode structure 12, and the second both alignment layers 15 is arranged between liquid crystal layer 14 and the second electrode structure 16.The liquid crystal molecule along the arrangement of initial arrangement direction is included in liquid crystal layer 14.First both alignment layers 13 and the second both alignment layers 15 cooperatively interact liquid crystal molecule is arranged along initial arrangement direction.
The production process of liquid crystal lens, as described below:
First strip electrode group 121a applies the first voltage V1, the first strip electrode group 121b applies no-voltage or reference voltage Vref.Like this, form a voltage difference at the first strip electrode group 121a and the first strip electrode group 121b, and then produce electric field.The orientation under the effect of electric field of liquid crystal molecule in liquid crystal layer 14 changes, according to the arrangement situation of liquid crystal molecule in liquid crystal layer 14, the deflection angle of the liquid crystal molecule of zones of different is different, the refractive index of liquid crystal molecule is made to present parabola shaped change, and then formation lens, reach and make the lensed effect of liquid crystal layer 14 tool, the refractive index of the liquid crystal molecule between two adjacent the first strip electrodes 121 presents parabola shaped change, forms lens.
Second strip electrode group 161a applies no-voltage or reference voltage Vref (the second strip electrode group 161a and the first strip electrode group 121b is electrically connected mutually in other words), the second strip electrode group 161b applies the first voltage V1(in other words the second strip electrode group 161b and the first strip electrode group 121a be mutually electrically connected).Like this, form a voltage difference at the second strip electrode group 161a and the second strip electrode group 161b, and then produce electric field.The orientation under the effect of electric field of liquid crystal molecule in liquid crystal layer 14 changes, according to the arrangement situation of liquid crystal molecule in liquid crystal layer 14, the deflection angle of the liquid crystal molecule of zones of different is different, the refractive index of liquid crystal molecule is made to present parabola shaped change, and then formation lens, reach and make the lensed effect of liquid crystal layer 14 tool, the refractive index of the liquid crystal molecule between two adjacent the second strip electrodes 161 presents parabola shaped change, forms lens.
In addition, the voltage that the first strip electrode group 121a, the first strip electrode group 121b, the second strip electrode group 161a and the second strip electrode group 161b apply is not limited to above-mentioned a kind of mode, as long as can form liquid crystal lens.
If light is incident by the direction perpendicular to second substrate 17, the lens that liquid crystal molecule first between adjacent two the second strip electrodes 161 is formed, the lens that liquid crystal molecule again between adjacent two the first strip electrodes 121 is formed, then penetrated by first substrate 11.
Compared to prior art, the embodiment of the present invention adopts the first electrode structure 12 and the second electrode structure 16 to be divided into 2 groups of electrodes (the first strip electrode group 121a and the first strip electrode group 121b separately, second strip electrode group 161a and the second strip electrode group 161b), type of drive is simple.First electrode structure 12 and the second electrode structure 16 electrode zone very narrow, light penetration is high.First strip electrode group 121a and the first strip electrode group 121b, the second strip electrode group 161a and the second strip electrode group 161b center direction of an electric field are laterally, and therefore the center liquid crystal molecule arrangement depth of parallelism is high, and index distribution is desirable.
Refer to Fig. 6, it is the first electrode structure of a kind of liquid crystal lens of the present invention and the diagrammatic cross-section of the second electrode structure.
Second strip electrode group 161a and the first strip electrode group 121a is oppositely arranged; Second strip electrode group 161b and the first strip electrode group 121b is oppositely arranged.First strip electrode group 121a is different from the width of the first strip electrode group 121b, and the width of the first strip electrode group 121a is larger than the width of the first strip electrode group 121b; Second strip electrode group 161a is different from the width of the second strip electrode group 161b, and the width of the second strip electrode group 161a is less than the width of the second strip electrode group 161b.Preferably, the width of the first strip electrode group 121a is equal with the width of the second strip electrode group 161b, and the width of the first strip electrode group 121b is equal with the width of the second strip electrode group 161a.Breadth extreme in two adjacent the first strip electrodes is equal with the breadth extreme in adjacent two the second strip electrodes, and the minimum widith in two adjacent the first strip electrodes is equal with the minimum widith in adjacent two the second strip electrodes.The first strip electrode that breadth extreme is equal and the second strip electrode are electrically connected mutually, and the first strip electrode and second strip electrode of minimum widith are electrically connected mutually.
In addition, can there be little overlap joint at the first strip electrode group 121a and the second strip electrode group 161b edge to improve Electric Field Distribution, such as design the overlap joint of 5um.
Refer to Fig. 7, it is the another kind of structural representation of the first electrode structure of a kind of liquid crystal lens of the present invention.
First strip electrode group 221A and the first strip electrode group 221B has the place of handing-over, and adopt transparent insulation material to separate, insulating material can be monox (SiOx) or silicon nitride (SiNx), does not enumerate herein.
In like manner, the second electrode structure also can adopt said structure.
The present invention also provides a kind of 3 d display device, and it comprises above-mentioned liquid crystal lens.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present invention or essential characteristic, the present invention can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.
Claims (10)
1. a liquid crystal lens, is characterized in that, comprising:
Two electrode structures be oppositely arranged, each electrode structure comprises two electrode groups respectively, mutually insulated between two the electrode groups belonging to same electrode structure;
Liquid crystal layer, is arranged between described two electrode structures, and comprises the multiple liquid crystal molecules along the arrangement of initial arrangement direction;
Wherein, each electrode structure has at least one electrode group to be applied with non-zero voltage, and coating-forming voltage difference produce electric field between two the electrode groups belonging to same electrode structure, and belong to two electrode structures and be oppositely arranged two electrode components are not added with different voltage and coating-forming voltage difference produce electric field between, described electric field, for changing the orientation of described liquid crystal molecule, has lens effect to make described liquid crystal layer.
2. liquid crystal lens according to claim 1, it is characterized in that, described two electrode structures comprise the first electrode structure and the second electrode structure, described first electrode structure comprises multiple first strip electrodes of spaced setting, described second electrode structure comprises multiple second strip electrodes of spaced setting, wherein said first strip electrode and described second strip electrode arranged in parallel.
3. liquid crystal lens according to claim 2, is characterized in that, two adjacent the first strip electrode mutually insulateds, and the first strip electrode parting bead is electrically connected mutually, obtains two the electrode groups belonging to the first electrode structure; Two adjacent the second strip electrode mutually insulateds, the second strip electrode parting bead is electrically connected mutually, obtains two the electrode groups belonging to the second electrode structure.
4. liquid crystal lens according to claim 2, is characterized in that, the width of two adjacent the first strip electrodes is unequal, and two adjacent the second bar shaped electrode widths are unequal.
5. liquid crystal lens according to claim 4, it is characterized in that, breadth extreme in two adjacent the first strip electrodes is equal with the breadth extreme in adjacent two the second strip electrodes, and the minimum widith in two adjacent the first strip electrodes is equal with the minimum widith in adjacent two the second strip electrodes.
6. liquid crystal lens according to claim 5, is characterized in that, the first strip electrode that breadth extreme is equal and the second strip electrode are electrically connected mutually, and the first strip electrode and second strip electrode of minimum widith are electrically connected mutually.
7. liquid crystal lens according to claim 1, is characterized in that, adopts transparent insulation material to separate between two the electrode groups belonging to same electrode structure.
8. liquid crystal lens according to claim 1, is characterized in that, described liquid crystal lens also comprises first substrate and second substrate, and described two electrode structures are arranged on described first substrate and described second substrate respectively.
9. liquid crystal lens according to claim 1, it is characterized in that, described liquid crystal lens also comprises the first both alignment layers and the second both alignment layers, and described first both alignment layers and described second both alignment layers cooperatively interact described liquid crystal molecule is arranged along described initial arrangement direction.
10. a 3 d display device, is characterized in that, described device comprises the liquid crystal lens as described in any one of claim 1 to 9.
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| CN201210244791.3A CN102768448B (en) | 2012-07-16 | 2012-07-16 | Liquid crystal lens and 3 d display device |
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| CN201210244791.3A CN102768448B (en) | 2012-07-16 | 2012-07-16 | Liquid crystal lens and 3 d display device |
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| CN102768448B true CN102768448B (en) | 2015-12-02 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI481903B (en) * | 2013-07-08 | 2015-04-21 | Au Optronics Corp | Lc lens and 3d display using the same |
| US9591298B2 (en) | 2013-09-30 | 2017-03-07 | Superd Co. Ltd. | System and method for two-dimensional (2D) and three-dimensional (3D) display |
| CN103487963B (en) * | 2013-09-30 | 2016-03-30 | 深圳超多维光电子有限公司 | 2D/3D display switching device and driving method |
| TWI521497B (en) * | 2014-02-11 | 2016-02-11 | 友達光電股份有限公司 | Liquid crystal lens |
| TWI514363B (en) * | 2014-03-27 | 2015-12-21 | Au Optronics Corp | Pixel structure |
| CN104597684A (en) * | 2014-12-30 | 2015-05-06 | 深圳市亿思达科技集团有限公司 | Liquid crystal lens and liquid crystal display device based on naked eye three-dimensional display |
| CN104597685B (en) * | 2014-12-30 | 2018-07-06 | 深圳市魔眼科技有限公司 | Liquid crystal lens and liquid crystal display device |
| CN106371262A (en) * | 2016-11-03 | 2017-02-01 | 武汉华星光电技术有限公司 | Method and device for liquid crystal lens simulation |
| WO2018132980A1 (en) * | 2017-01-18 | 2018-07-26 | 张家港康得新光电材料有限公司 | Display device |
| CN106647064B (en) * | 2017-03-10 | 2020-04-03 | 京东方科技集团股份有限公司 | Optical device, display device and driving method thereof |
| CN108415190B (en) * | 2018-03-12 | 2021-12-10 | 京东方科技集团股份有限公司 | Display panel, gray scale regulation and control method thereof and display device |
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