CN102226861A - 3D (three-dimensional) stereo display device and liquid crystal micro-lens thereof - Google Patents
3D (three-dimensional) stereo display device and liquid crystal micro-lens thereof Download PDFInfo
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- CN102226861A CN102226861A CN 201110108964 CN201110108964A CN102226861A CN 102226861 A CN102226861 A CN 102226861A CN 201110108964 CN201110108964 CN 201110108964 CN 201110108964 A CN201110108964 A CN 201110108964A CN 102226861 A CN102226861 A CN 102226861A
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Abstract
The invention discloses a 3D stereo display device and a liquid crystal micro-lens thereof. The liquid crystal micro-lens comprises an upper electrode structure and a lower electrode structure which are arranged at an interval, and a liquid crystal layer located between the upper electrode structure and the lower electrode structure; a polymer chain is further included in the liquid crystal layer to enhance the anchoring function to liquid crystal molecules. Via the method, the device in the invention can reduce responding time and increase responding speed.
Description
Technical field
The present invention relates to optical technical field, particularly relate to 3D 3 d display device and liquid crystal microlens thereof.
Background technology
Liquid crystal microlens has a wide range of applications in dimension display technologies field and other field of optical applications because of having the focal length controlled amount, whether focusing on controlled and characteristics such as the bodily form is frivolous.
Though liquid crystal microlens is also preponderated than the physics lens of traditional employing mechanical hook-up aspect dynamic response, but, some to response speed exigent application as realizing in the full resolution 3D stereoscopic display device device, its response speed still can not satisfy the needs of actual 120Hz of requirement or higher frame frequency refreshing frequency, thereby the response speed problem of liquid crystal microlens has become pendent technological difficulties problem in the stereo display field.
About the prior art of liquid crystal microlens aspect, can realize the electric controlled liquid crystal lens method for making with reference to No. 200610118876.1 described a kind of rotation stress method of disclosed Chinese invention patent application on May 9th, 2007.Described method comprises: the rete that coating one deck Photosetting polymer network liquid crystal material (PNLC) constitutes between two glass substrates that are coated with nesa coating at first, adopt electric field that the liquid crystal droplet optical axis is orientated along direction of an electric field in the time of uv-exposure, form and before thoroughly solidifying in liquid crystal cell interpolymer anchoring effect, remove directed electric field, the rotary glass substrate, produce tangential rotational shear stress, the liquid crystal droplet optical axis direction is changed by the effect pests occurrence rule of rotational shear stress, thin-film refractive index distributes and forms regularity distribution, distribute mutually thereby change the incident light position, macroscopic view forms lens effect.Under electric field action, the liquid crystal droplet optical axis is unified gradually to be arrived along direction of an electric field, and the regularity distribution of refractive index disappears, and the lensing effect disappears, and realizes the electric control zooming effect.
But the liquid crystal microlens that above-mentioned patented claim technology discloses remains by the performance of liquid crystal material itself its fall time and box is thick determines, so is difficult to effectively reduce its overall response time.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of 3D 3 d display device and liquid crystal microlens thereof, can reduce the response time, improve response speed.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of liquid crystal microlens is provided, comprises: upper electrode arrangement and lower electrode arrangement that the interval is provided with; Liquid crystal layer between upper electrode arrangement and lower electrode arrangement; Also include the polymkeric substance chain in the described liquid crystal layer, to strengthen grappling effect to liquid crystal molecule.
Wherein, under no electric field situation between the described top-bottom electrode structures, the liquid crystal molecule in the liquid crystal layer of nearby polymer chain bar, the angle between its director orientation direction and the initial liquid crystal director direction of orientation is less than 10 degree.
Wherein, described polymeric long chain structure when forming electric field between top-bottom electrode structures, makes that liquid crystal molecule forms the shaped form director alignment together in the liquid crystal layer of contiguous polymer architecture.
Wherein, described polymer architecture accounts for the ratio of liquid crystal layer volume less than 10%.
Wherein, described polymeric long chain structure is the regular polymer branched structure.
Wherein, described polymer architecture refractive index and the ratio of liquid crystal layer refractive index are less than 1.2.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of liquid crystal microlens is provided, comprises: upper electrode arrangement and lower electrode arrangement that the interval is provided with; Liquid crystal layer between upper electrode arrangement and lower electrode arrangement; Also include the polymkeric substance wall in the described liquid crystal layer, described polymkeric substance wall is divided into horizontal a plurality of zones with liquid crystal layer, to strengthen the grappling effect to liquid crystal molecule.
Wherein, under no electric field situation between the described top-bottom electrode structures, the angle between the director orientation direction of the liquid crystal molecule in the liquid crystal layer of contiguous polymkeric substance wall and the initial liquid crystal director direction of orientation is less than 10 degree.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: a kind of 3D 3 d display device is provided, comprises liquid crystal microlens, described liquid crystal microlens comprises: upper electrode arrangement and lower electrode arrangement that the interval is provided with; Liquid crystal layer between upper electrode arrangement and lower electrode arrangement; Also include the polymkeric substance chain in the described liquid crystal layer, to strengthen grappling effect to liquid crystal molecule.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: a kind of 3D 3 d display device is provided, comprises liquid crystal microlens, described liquid crystal microlens comprises: upper electrode arrangement and lower electrode arrangement that the interval is provided with; Liquid crystal layer between upper electrode arrangement and lower electrode arrangement; Also include the polymkeric substance wall in the described liquid crystal layer, described polymkeric substance wall is divided into horizontal a plurality of zones with liquid crystal layer, to strengthen the grappling effect to liquid crystal molecule.
The invention has the beneficial effects as follows: be different from the situation that prior art liquid crystal microlens response speed can't effectively improve always, the present invention requires in satisfying practical application under the condition of the device that possesses and relevant important parameters such as liquid crystal material, by in liquid crystal layer, adding polymer architecture, increase the number and the character of liquid crystal and extraneous Contact Boundary, the stiffened edge bound pair is in the grappling effect of liquid crystal system, particularly body grappling effect, strengthen the elasticity free energy in the liquid crystal decline process greatly, from reaching the reduction purpose of fall time, effectively improve the liquid crystal microlens response speed.
Description of drawings
Fig. 1 is the not structural representation of added electric field of liquid crystal microlens embodiment one of the present invention;
Fig. 2 is the structural representation of liquid crystal microlens embodiment one added electric field of the present invention;
Fig. 3 is the structural representation of liquid crystal microlens embodiment two added electric fields of the present invention.
Embodiment
In order to solve the problem that prior art can't realize the high speed dynamic response to liquid crystal microlens, propose a kind of by increasing liquid crystal system and the number of extraneous Contact Boundary condition and the technology of character in this present invention, can be under the situation that the thick and liquid crystal material of component cases etc. is determined, by strengthening of the grappling effect of extraneous boundary layer for the liquid crystal system, particularly body grappling effect, increase its elasticity free energy, thereby reduce fall time.
It is multiple that the present invention realizes that the technical scheme of above-mentioned design can have, and such as consulting Fig. 1 and Fig. 2, provides liquid crystal microlens embodiment one of the present invention, and it comprises following structure:
Be arranged at the polymkeric substance chain 40 in the liquid crystal layer 30, to strengthen grappling effect to liquid crystal molecule.
Wherein, by applying voltage, can between the lower electrode arrangement 21 of the upper electrode arrangement 11 of upper substrate 10 inside surfaces and infrabasal plate 20 inside surfaces, form electric field, the Liquid Crystal Molecules Alignment direction of liquid crystal layer 30 is reversed, realize the translation process of liquid crystal microlens array.
In the change procedure of realizing the liquid crystal microlens array, the response time of liquid crystal is divided into rise time and fall time.Rise time
Fall time
Hence one can see that, under the condition that liquid crystal material and related device parameter are determined, increases driving voltage and can reduce rise time tr; Determine because be by the performance of liquid crystal material itself fall time fully and box is thick, thus driving voltage for fall time tf but do not have too big effect.
The above-mentioned embodiment of the present invention is the response speed that improves liquid crystal lens for further, and the response time that particularly reduces liquid crystal director decline process proposes.By increasing the number and the character of liquid crystal molecule and extraneous Contact Boundary, the stiffened edge bound pair strengthens the elasticity free energy in the liquid crystal decline process greatly in the grappling effect of liquid crystal system, particularly body grappling effect, from reaching the reduction purpose of fall time.
In embodiment more specifically, as shown in Fig. 1 and Fig. 2, be in liquid crystal layer 30, to form a spot of polymkeric substance chain 40 structures, increase the border number between polymer architecture and the liquid crystal layer 30, utilize the body grappling effect of polymer architecture to liquid crystal molecule in the liquid crystal layer 30, increase the elasticity free energy of liquid crystal system, thereby arrive the purpose of accelerating the decline process.
Such as, can design like this, under no electric field situation between the described top- bottom electrode structures 11,21, the angle between the director orientation direction of the liquid crystal molecule in the liquid crystal layer 30 of nearby polymer chain bar 40 and the initial liquid crystal director direction of orientation is less than 10 degree.
Owing to the intervention of this polymkeric substance chain 40, can influence the arrangement effect of initial liquid crystal director, so-called initial liquid crystal director is meant not add polymkeric substance chain 40 liquid crystal director before.As shown in Figure 1.Near near the liquid crystal director the polymer network structure, meeting is owing to be subjected under the acting in conjunction of polymkeric substance chain 40 structures formation topological effect of the caused geometry of pattern and different materials intermolecular interaction, and forming with initially liquid crystal director is parallel-oriented has the director of a shade of difference to arrange.
In another embodiment of the present invention, described polymeric long chain structure when forming electric field between top- bottom electrode structures 11,21, makes that liquid crystal molecules form the shaped form director alignment together in the liquid crystal layer 30 of contiguous polymer architecture.
Such as, can suitably control the pattern and the quantity of this polymkeric substance chain 40 structures, then can be when added electric field, form the director distribution of similar tracing pattern such as parabola shaped, as shown in Figure 2.
Generally speaking,, can make ratio that described polymer architecture accounts for liquid crystal layer 30 volumes, such as 3%, 5% or 7% etc. less than 10% for not influencing the formation effect of liquid crystal lens.
In another embodiment of the present invention, described polymeric long chain structure is the regular polymer branched structure, and promptly described polymkeric substance chain 40 does not have long irregular branched structure as far as possible.
Because the scattering effect that caused of polymkeric substance chain 40 structures etc., the refractive index that can selective polymer and the refractive index of liquid crystal material are complementary or are close in order further to reduce.Such as the ratio of described polymer architecture refractive index and liquid crystal layer 30 refractive indexes less than 1.2, concrete can be 1: 1 or 1: 1.1 etc., less to the influence of display frame like this, be beneficial to the demonstration image quality that keeps higher.
In another embodiment of the present invention, angle between described liquid crystal molecule director orientation direction and the initial liquid crystal molecule director orientation direction is less than 5 degree, such as being 1 degree, 2 degree, 3 degree or 4 degree etc., there is the director of a shade of difference to arrange as long as form, all within the scope of the invention with initially liquid crystal director is parallel-oriented.
Consult Fig. 3, design also provides a kind of liquid crystal microlens embodiment according to the present invention, comprising:
Upper substrate 50 and infrabasal plate 60 that the interval is provided with, described upper substrate 50 inside surfaces are provided with upper electrode arrangement 51, and described infrabasal plate 60 inside surfaces are provided with lower electrode arrangement 61;
Liquid crystal layer 70 between upper substrate 50 and infrabasal plate 60;
Be arranged at the polymkeric substance wall 90 in the liquid crystal layer 70, described polymkeric substance wall 90 is divided into horizontal a plurality of zones with liquid crystal layer 70, to strengthen the grappling effect to liquid crystal molecule.
Above-mentioned embodiment, be for reducing above-mentioned because the random distribution that polymkeric substance chain structure and morphology forms may influence the formation problem of final liquid crystal lens effect, and accurately control according to the pattern and the quantity of actual design to polymer architecture, be designed to polymkeric substance wall 90.In the embodiment of the present invention, polymkeric substance chain structure and polymkeric substance wall 90 structures can be referred to as polymer architecture.
When making above-mentioned liquid crystal microlens embodiment, can prepare the precision mask plate according to designing requirement, light is injected liquid crystal layer 70 from the light hole of mask plate, make liquid crystal layer 70 form the structure of a series of polymkeric substance walls 90 in the position of corresponding light hole, reach the purpose that increases extraneous boundary condition.
Utilize the mask plate tool, can make by illumination easily and form the polymkeric substance wall in the liquid crystal layer 70, make the liquid crystal molecule in the liquid crystal layer 70 of contiguous polymkeric substance wall 90, its director orientation direction is spent less than 10 with the angle between the initial liquid crystal director direction of orientation, such as angle is 0.The number of polymkeric substance wall 90 can form according to the actual design needs, and quantity is enough, can add the body grappling effect of strength polymer wall 90 for the liquid crystal system, and then increases the elasticity free energy of liquid crystal system, thereby reaches the purpose of quickening the decline process.
Especially, polymkeric substance wall 90 is arranged on the edge of the predetermined liquid crystal lens that forms, to reduce the influence to the optical effect of liquid crystal lens.
Above-mentioned polymkeric substance wall 90 can be perpendicular to upper substrate 50 and infrabasal plate 60, also can be to favour upper substrate 50 and infrabasal plate 60.
In an embodiment, make the liquid crystal molecule in the liquid crystal layer 70 of contiguous polymkeric substance wall 90, its director orientation direction is spent less than 10 with the angle between the initial liquid crystal director direction of orientation.
In an embodiment, the angle between the liquid crystal molecule director orientation direction of described nearby polymer chain bar and the initial liquid crystal director direction of orientation is less than 5 degree.
Certainly, as long as angle is less than 10 degree, all within the scope of the present invention.
Within the scope of the present invention, by in liquid crystal lens, increasing the number and the character of the extraneous boundary condition that directly contacts with the liquid crystal system, reach the mode that reduces fall time, be applicable to that also other anyly forms other device architecture or the pattern of liquid crystal microlens by the bulk effect of utilizing refractive index gradient, is not limited at this cited example that arrives.
Design also provides a kind of 3D 3 d display device according to the present invention, comprises liquid crystal microlens embodiment as above.Such as, consult Fig. 1 and Fig. 2, described liquid crystal microlens comprises:
Be arranged at the polymkeric substance chain 40 in the liquid crystal layer 30, to strengthen grappling effect to liquid crystal molecule.
Perhaps, can participate in Fig. 3, described liquid crystal microlens comprises:
Upper substrate 50 and infrabasal plate 60 that the interval is provided with, described upper substrate 50 inside surfaces are provided with upper electrode arrangement 51, and described infrabasal plate 60 inside surfaces are provided with lower electrode arrangement 61;
Liquid crystal layer 70 between upper substrate 50 and infrabasal plate 60;
Be arranged at the polymkeric substance wall 90 in the liquid crystal layer 70, to strengthen grappling effect to liquid crystal molecule.
3D 3 d display device of the present invention can be to realize full resolution 3D stereoscopic display device.Because the response time that the present invention can reduce liquid crystal lens, improve the response speed of liquid crystal lens, so 3D 3 d display device of the present invention can satisfy the needs of actual 120Hz of requirement or higher frame frequency refreshing frequency, solve pendent technological difficulties problem in the stereo display field.
The invention is not restricted to be applied to 3D stereo display, can be any need to improve response speed utilize the liquid crystal microlens The Application of Technology.
The above only is embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. liquid crystal microlens comprises:
Upper electrode arrangement and lower electrode arrangement that the interval is provided with;
Liquid crystal layer between upper electrode arrangement and lower electrode arrangement;
It is characterized in that, also include the polymkeric substance chain in the described liquid crystal layer, to strengthen grappling effect liquid crystal molecule.
2. liquid crystal microlens according to claim 1 is characterized in that,
Under no electric field situation between the described top-bottom electrode structures, the liquid crystal molecule in the liquid crystal layer of nearby polymer chain bar, the angle between its director orientation direction and the initial liquid crystal director direction of orientation is less than 10 degree.
3. liquid crystal microlens according to claim 2 is characterized in that,
Described polymeric long chain structure when forming electric field between top-bottom electrode structures, makes that liquid crystal molecule forms the shaped form director alignment together in the liquid crystal layer of contiguous polymer architecture.
4. liquid crystal microlens according to claim 3 is characterized in that,
Described polymer architecture accounts for the ratio of liquid crystal layer volume less than 10%.
5. liquid crystal microlens according to claim 3 is characterized in that,
Described polymeric long chain structure is the regular polymer branched structure.
6. according to each described liquid crystal microlens of claim 1 to 4, it is characterized in that,
The ratio of described polymer architecture refractive index and liquid crystal layer refractive index is less than 1.2.
7. liquid crystal microlens comprises:
Upper electrode arrangement and lower electrode arrangement that the interval is provided with;
Liquid crystal layer between upper electrode arrangement and lower electrode arrangement;
It is characterized in that,
Also include the polymkeric substance wall in the described liquid crystal layer, described polymkeric substance wall is divided into horizontal a plurality of zones with liquid crystal layer, to strengthen the grappling effect to liquid crystal molecule.
8. liquid crystal microlens according to claim 7 is characterized in that,
Under no electric field situation between the described top-bottom electrode structures, the angle between the director orientation direction of the liquid crystal molecule in the liquid crystal layer of contiguous polymkeric substance wall and the initial liquid crystal director direction of orientation is less than 10 degree.
9. a 3D 3 d display device comprises liquid crystal microlens, and described liquid crystal microlens comprises:
Upper electrode arrangement and lower electrode arrangement that the interval is provided with;
Liquid crystal layer between upper electrode arrangement and lower electrode arrangement;
It is characterized in that,
Also include the polymkeric substance chain in the described liquid crystal layer, to strengthen grappling effect to liquid crystal molecule.
10. a 3D 3 d display device comprises liquid crystal microlens, and described liquid crystal microlens comprises:
Upper electrode arrangement and lower electrode arrangement that the interval is provided with;
Liquid crystal layer between upper electrode arrangement and lower electrode arrangement;
It is characterized in that,
Also include the polymkeric substance wall in the described liquid crystal layer, described polymkeric substance wall is divided into horizontal a plurality of zones with liquid crystal layer, to strengthen the grappling effect to liquid crystal molecule.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103399444A (en) * | 2013-07-31 | 2013-11-20 | 京东方科技集团股份有限公司 | Polymer stabilizing liquid crystal lens, preparation method thereof and display device |
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| US7667818B2 (en) * | 2003-06-05 | 2010-02-23 | Universite Laval | Electrically variable focus polymer-stabilized liquid crystal lens having non-homogenous polymerization of a nematic liquid crystal/monomer mixture |
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| US20040155997A1 (en) * | 2003-02-11 | 2004-08-12 | Kent State University | Stressed liquid crystals as an ultra-fast light modulating material consisting of unidirectionally oriented liquid crystal micro-domains separated by polymer chains |
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| US7079203B1 (en) * | 2003-06-23 | 2006-07-18 | Research Foundation Of The University Of Central Florida, Inc. | Electrically tunable polarization-independent micro lens using polymer network twisted nematic liquid crystal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103399444A (en) * | 2013-07-31 | 2013-11-20 | 京东方科技集团股份有限公司 | Polymer stabilizing liquid crystal lens, preparation method thereof and display device |
| CN103399444B (en) * | 2013-07-31 | 2016-03-30 | 京东方科技集团股份有限公司 | A kind of polymer stabilized nematic liquid crystals lens and preparation method thereof, display device |
| US9575387B2 (en) | 2013-07-31 | 2017-02-21 | Boe Technology Group Co., Ltd. | Polymer stabilizing liquid crystal lens, method for manufacturing the same, display device and electronic product |
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Effective date of registration: 20180720 Address after: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.) Patentee after: Shenzhen super Technology Co., Ltd. Address before: 518053 East Guangdong H-1 East 101, overseas Chinese town, Nanshan District, Shenzhen. Patentee before: Shenzhen SuperD Photoelectronic Co., Ltd. |