WO2015014081A1 - 一种聚合物稳定液晶透镜及其制备方法、显示装置、电子产品 - Google Patents

一种聚合物稳定液晶透镜及其制备方法、显示装置、电子产品 Download PDF

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WO2015014081A1
WO2015014081A1 PCT/CN2013/089722 CN2013089722W WO2015014081A1 WO 2015014081 A1 WO2015014081 A1 WO 2015014081A1 CN 2013089722 W CN2013089722 W CN 2013089722W WO 2015014081 A1 WO2015014081 A1 WO 2015014081A1
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electrode
liquid crystal
polymer
substrate
stabilized
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English (en)
French (fr)
Inventor
王新星
柳在健
姚继开
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B3/00—Electrolytic production of organic compounds
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G02F1/13342—Holographic polymer dispersed liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13775—Polymer-stabilized liquid crystal layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/294—Variable focal length devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/207—Image signal generators using stereoscopic image cameras using a single two-dimensional [2D] image sensor
    • H04N13/236—Image signal generators using stereoscopic image cameras using a single two-dimensional [2D] image sensor using varifocal lenses or mirrors

Definitions

  • the invention relates to display technology
  • liquid crystal microlenses are widely used in 3D display mode because of their adjustable focal length and controllability.
  • the prior art discloses a 3D lens that provides different pretilt angles for each subunit by using a photo-alignment technique, and can display a 3D picture when no voltage is applied, but the defect of this technique is that the liquid crystal is oriented to a mixed orientation, liquid crystal molecules. It has a twisted structure and low light transmission.
  • the technical problem to be solved by the present invention is: How to provide a polymer-stabilized liquid crystal lens, a preparation method thereof, a display device, and an electronic product to improve the light transmittance of the lens.
  • the present invention provides a polymer stabilized liquid crystal lens comprising: a first substrate, a first electrode, a liquid crystal layer, a second electrode, and a second substrate;
  • the first electrode is disposed on the first substrate
  • the second electrode is disposed on the second substrate
  • the liquid crystal layer is disposed between the first electrode and the second electrode;
  • the first electrode includes a plurality of electrode units, and a voltage value is formed between the plurality of the electrode units and the second electrode a changing periodic electric field;
  • the liquid crystal layer includes a polymer and liquid crystal molecules that are deflected by the periodic electric field before the polymer is stabilized, and maintain the angle of deflection after the polymer is stabilized.
  • the liquid crystal layer is divided into a plurality of liquid crystal layer partitions having the same number of the electrode units along the arrangement direction of the plurality of electrode units;
  • the length of each of the electrode units in the arrangement direction is the same as the length of the liquid crystal layer partition in the projection area of the electrode unit in the arrangement direction;
  • the liquid crystal molecules in each of the liquid crystal layer sections are deflected by a corresponding angle under the action of the periodic electric field, and after the polymer is stabilized, the liquid crystal molecules in each of the liquid crystal layer sections maintain respective deflection angles, and the liquid crystal layer has 3D lens effect.
  • the content of the polymer in the liquid crystal layer is less than 10%.
  • the first substrate and the second substrate are made of resin, glass or plastic material.
  • the present invention also provides a display device in which the polymer stabilized liquid crystal lens is disposed on a display screen of the display device.
  • the invention also provides a preparation method of a polymer stabilized liquid crystal lens, comprising:
  • the periodic electric field is maintained and the polymer monomer is exposed to form a stable polymer.
  • the liquid crystal molecules respectively maintain respective deflection angles, and the liquid crystal layer has a two-dimensional lens effect.
  • the aligning treatment of the first substrate provided with the first electrode and the second substrate provided with the second electrode specifically includes: a first substrate provided with the first electrode and a second substrate provided with the second electrode The substrate is subjected to orientation treatment by illumination.
  • the aligning treatment of the first substrate provided with the first electrode and the second substrate provided with the second electrode specifically includes: a first substrate provided with the first electrode and a second electrode formed The second substrate is subjected to an orientation treatment by friction.
  • the exposing the polymer monomer specifically comprises: sequentially exposing the polymer monomer in a corresponding region of each electrode unit on the first electrode by using a mask.
  • the content of the polymer monomer in the mixed liquid is less than 10%.
  • the invention also provides an electronic product comprising the display device.
  • the polymer stabilized liquid crystal lens provided by the embodiment of the invention, the preparation method thereof, the display device, and the electronic product have the following technical effects: the liquid crystal molecules of the polymer stabilized liquid crystal lens have no distortion, high light transmittance, and The liquid crystal molecules are stabilized by the polymer, have a uniform and stable orientation, have a good display effect, and are excellent in overall performance. Further, the polymer-stabilized liquid crystal lens can have a 3D display effect without applying an electric field, thereby saving electric energy.
  • FIG. 1 is a schematic structural view of a polymer-stabilized liquid crystal lens according to Embodiment 1 of the present invention
  • FIG. 2 is a flow chart of a method for preparing a polymer-stabilized liquid crystal lens according to Embodiment 2 of the present invention
  • FIGS. 3a to 3e are Embodiment 2 of the present invention
  • the polymer-stabilized liquid crystal lens includes: a first substrate 110, a first electrode 120, a liquid crystal layer 130, and a second The electrode 140 and the second substrate 150.
  • the first electrode 120 is disposed on the first substrate! 10, that is, disposed on a side of the first substrate 110 adjacent to the liquid crystal layer 130; the second electrode !40 is disposed on the second substrate 150, that is, disposed on the second substrate 150 One side of the liquid crystal layer 130; the liquid crystal layer 130 Provided between the first electrode 120 and the second electrode 140.
  • the first substrate 110 and the second substrate 150 may be made of a resin, glass or plastic material.
  • the first electrode 120 includes a plurality of electrode units 121, and a periodic electric field whose voltage value changes periodically is formed between the plurality of electrode units 121 and the second electrode 140.
  • the first electrode 120 and the second electrode 140 are transparent electrodes, such as ITO (Iridium tin oxide).
  • the periodic electric field includes an electric field whose voltage value equivalent to the number of the electrode units 12! is periodically changed.
  • the periodic electric field will be described in detail by taking the first electrode 120 including seven electrode units 121 as an example.
  • the present invention is not limited thereto, and those skilled in the art can set the number of electrode units as needed.
  • voltage values (in volts) of the seven electrode units 121 from one side to the other are sequentially set to 0, +2, ten, four, +6, -4, 2, 0, and the second
  • the voltage value on the electrode 140 is set to 0, seven electric fields are formed between the seven electrode units 121 and the second electrode 140 of the first electrode 120, and the seven electric field voltage values are respectively 0.
  • the voltage values of the seven electric fields change periodically to form a periodic electric field.
  • the electric field voltage of the periodic electric field can be adjusted according to actual needs, and is not limited to the voltage value assumed above.
  • the number of the electrode units 121 included in the first electrode 120 is not fixed to seven, which may be set according to the size of the display screen of the display device, for example, may be set to 9 or 11 or the like.
  • the liquid crystal layer 130 includes a polymer 132 and liquid crystal molecules 131 that are deflected by the periodic electric field before the polymer 132 is stabilized, and maintain the deflection after the polymer 132 is stabilized. angle.
  • the polymer 132 is a plurality of polymer monomers before being stabilized, and the liquid crystal molecules 131 and the polymer bodies are mixed to form a mixed liquid.
  • the liquid crystal molecules 131 are deflected by the periodic electric field, and the liquid crystal layer 130 is divided into a plurality of the same number of the electrode units 121 along the arrangement of the plurality of electrode units m.
  • the liquid crystal layer is partitioned, the length of each of the electrode units 121 along the arrangement direction is the same as the length of the liquid crystal layer partition in the projection area of the electrode unit m along the arrangement direction, and each of the liquid crystal layer partitions
  • the liquid crystal molecules are deflected by a corresponding angle under the action of the periodic electric field, and the deflection angles of the liquid crystal molecules 131 in all of the liquid crystal layer sections are periodic. Sex.
  • the polymer monomer When the polymer monomer is subjected to a polymerization treatment, the polymer monomer is polymerized along the deflection direction of the liquid crystal molecules 131 to finally form a stable polymer 132, and the polymer 132 is stabilized after each of the The liquid crystal molecules 131 in the liquid crystal layer section maintain respective deflection angles, and the liquid crystal layer 30 has a 3D lens effect. At this time, the periodic electric field is removed, and the liquid crystal molecules 131 also maintain their respective deflection angles in the stabilized polymer 132 to form a polymer-stabilized liquid crystal lens having a 3D lens effect.
  • the content of the polymer ! 32 in the liquid crystal layer 130 is less than 10%.
  • the polymer-stabilized liquid crystal lens of the present embodiment has the following advantages: liquid crystal molecules have no distortion, high light transmittance, liquid crystal molecules are stabilized by the polymer, uniform and stable orientation, good display effect, and excellent comprehensive performance. Further, the polymer-stabilized liquid crystal lens can have a 3D display effect when no electric field is applied, thereby saving electric energy.
  • Example 2 liquid crystal molecules have no distortion, high light transmittance, liquid crystal molecules are stabilized by the polymer, uniform and stable orientation, good display effect, and excellent comprehensive performance. Further, the polymer-stabilized liquid crystal lens can have a 3D display effect when no electric field is applied, thereby saving electric energy.
  • FIG. 2 is a flow chart showing a method of preparing a polymer-stable liquid crystal lens according to Embodiment 2 of the present invention.
  • 3a to 3e are flow charts showing the preparation process of the polymer-stabilized liquid crystal lens according to Embodiment 2 of the present invention. Referring to FIG. 2 and FIG. 3a to FIG. 3e, the method includes:
  • Step 210 Orienting the first substrate 310 provided with the first electrode 320 and the second substrate 350 provided with the second electrode 340, and pairing the aligned first substrate 310 and the second substrate 350 to the box A mixture of a polymer monomer 333 and a liquid crystal molecule 331 is injected, and the first electrode 320 includes a plurality of electrode units.
  • the step 210 may further include:
  • Step 21 h A first electrode 320 is disposed on the first substrate 310, and the first electrode 320 includes a plurality of electrode units 321 .
  • Step 212 A second electrode 340 is disposed on the second substrate 350.
  • the first substrate 310 and the second substrate 350 may be made of resin, glass or plastic material.
  • the first electrode 320 and the second electrode 340 are transparent electrodes, such as ITO.
  • Step 213 The first substrate 310 provided with the first electrode 320 and the second substrate 350 provided with the second electrode 340 are subjected to an alignment treatment by illumination.
  • the orientation treatment may also be performed by a friction method.
  • the liquid crystal molecules 331 have a certain pretilt angle, which affects the liquid crystal distribution after the subsequent application of the electric field.
  • the solution of the present invention can also be achieved, the effect is not as good as the illumination method. Therefore, in this embodiment, the liquid crystal molecules 331 are preferably subjected to an alignment treatment by an illumination method. As shown in FIG. 3a, after the alignment treatment by the illumination method, the pretilt angle of the liquid crystal molecules 331 is close to 0, and the liquid crystal molecules 331 are horizontally oriented.
  • Step 214 The first substrate 310 and the second substrate 350 after the orientation processing are paired, and the first electrode 320 and the second electrode 340 are oppositely disposed.
  • Step 215 A mixture of polymer monomer 333 and liquid crystal molecules 331 is injected into the cell.
  • the content of the polymer monomer 333 in the mixed solution is less than 10%.
  • Step 220 Form a periodic electric field whose voltage value changes periodically between the plurality of electrode units 321 and the second electrode 340 of the first electrode 320, and the liquid crystal in the projection area of each of the electrode units 321
  • the molecules 331 are respectively deflected by respective angles under the action of the periodic electric field.
  • the periodic electric field includes an electric field whose voltage value equivalent to the number of the electrode units 321 is periodically changed.
  • the liquid crystal molecules 331 in the corresponding regions of each electrode unit 321 are deflected by an electric field formed by the electrode unit 321 and the second electrode 340, and the liquid crystal molecules 331 in the entire periodic electric field.
  • the deflection angle is periodic.
  • Step 230 Maintaining the periodic electric field, the polymer monomer 333 is exposed to form a stable polymer 332.
  • the stable polymer 332 maintains the liquid crystal molecules 331 at respective deflection angles, and the stable polymer 332 including the liquid crystal molecules 331 has a 3D lens effect.
  • the polymer monomer 333 may be exposed as a whole, that is, at the same time, all the polymer monomers 333 between the first electrode 320 and the second electrode 340 are exposed.
  • the solution of the present invention can be realized, since the polymer monomer 333 in the corresponding region of each adjacent electrode unit 321 during the overall exposure has a function, that is, a covalent bond is formed, each The steady state of the liquid crystal molecules 331 at the junction of the adjacent electrode units 321 is affected.
  • each electrode unit 321 on the first electrode 320 is a region of each electrode unit 321 on the first electrode 320.
  • the polymer monomers 333 in the domains are sequentially exposed using a mask 360.
  • the polymer monomer 333 in the corresponding region of the first electrode unit 321 is exposed by using the mask 360, the polymer monomer 333 in the region is polymerized to form a partially stable polymer. At this time, the polymer monomer 333 in the corresponding region of the second electrode unit 321 is not exposed, and the polymer monomer 333 at the boundary between the first electrode unit 321 and the second electrode unit 321 is not easily formed. Price key.
  • the polymer monomer 333 in the corresponding region of the second electrode unit 321 is exposed by using the mask 360, the polymer monomer 333 in the region is polymerized to form a partially stable polymer.
  • the polymer monomer 333 at the boundary between the second electrode unit 321 and the third electrode unit 321 is not easily formed.
  • the polymer monomers 333 in the corresponding regions of each electrode unit 321 may be sequentially performed according to the period of the periodic electric field. Exposure, that is, first exposing the polymer monomer 333 in the corresponding region of the first electrode unit 321 of all periodic electric fields, and then the polymer in the corresponding region of the second electrode unit 321 in all periodic electric fields The monomer 333 is exposed, and then the polymer monomer 333 in the corresponding region of the third electrode unit 321 in all periodic electric fields is exposed, and so on, until the corresponding region of the last electrode unit 321 in all periodic electric fields The polymer monomer 333 is exposed.
  • the polymer monomer 333 in the corresponding region of each electrode unit 321 does not need to be exposed to different intensities, and the control of the pretilt angle of the liquid crystal molecules 331 is low, and the preparation process is low. Single, easy to implement.
  • the liquid crystal molecules are not distorted, the light transmittance is high, and the liquid crystal molecules are stabilized by the polymer. Uniform and stable orientation, good display performance and excellent overall performance.
  • the polymer-stabilized liquid crystal lens can have a 3D display effect when no electric field is applied, thereby saving electric energy.
  • the third embodiment provides a display device comprising the polymer stabilized liquid crystal lens of the first embodiment. Since the polymer-stabilized liquid crystal lens can have a 3D display effect when no electric field is applied, it does not need to be directly incorporated into the module, and can be attached to the surface of the display screen in the form of a film, so that it can be easily replaced in the maintenance day. .
  • the display device may be a television, a mobile phone, a tablet computer or the like.
  • the fourth embodiment provides an electronic product including the display device of the third embodiment. Since the polymer-stabilized liquid crystal lens in the display device can have a 3D display effect when no electric field is applied, it is not necessary to directly insert the polymer-stabilized liquid crystal lens into the module, and the film can be attached in the form of a film. Covers the display surface of the electronic product, making it easy to replace during maintenance.
  • the electronic product may be a household appliance, a communication device, an engineering device, or an electronic entertainment factory.
  • the polymer-stabilized liquid crystal lens according to the embodiment of the invention has no distortion of the liquid crystal molecules, high light transmittance, and the liquid crystal molecules are subjected to the polymer.
  • the polymer-stabilized liquid crystal lens can have a 3D display effect when no electric field is applied, thereby saving electric energy.
  • the polymer m body in the corresponding region of each electrode unit does not need to be exposed to different intensities, the control of the pretilt angle of the liquid crystal molecules is low, and the preparation process is simple and easy to implement.

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Abstract

一种聚合物稳定液晶透镜及其制备方法、显示装置、电子产品，涉及显示领域。聚合物稳定液晶透镜包括：第一基板（110）、第一电极（120）、液晶层（130）、第二电极（140）和第二基板（150）。第一电极设置在第一基板上，第二电极设置在第二基板上，液晶层设置在第一电极和第二电极之间。第一电极包括多个电极单元（121），多个电极单元与第二电极之间形成电压值呈周期变化的周期电场；液晶层包括聚合物（132）和液晶分子（131），液晶分子在聚合物稳定前在周期电场作用下偏转，并在聚合物稳定后保持偏转的角度。聚合物稳定液晶透镜中液晶分子无扭曲，光透过率高。

Description

一种聚合物稳定液晶透镜及其制备方法、 显示装置、 电子产品
本申请主张在 2013 年 07 月 31 日在中国提交的中国专利申请号 No. 201310329466.1的优先权， 其全部内容通过引用包含于此。
本发明涉及显示技术领
Figure imgf000003_0001
方法、 显示装置、 电子产品。
随着裸暖 3D (Three Dimensions, ≡维） 显示模式的逐渐发展， 各种 3D 技术应运而生， 其中由于液晶微透镜具有焦距可调可控的优点， 因此被广泛 应用在 3D显示模式中。
现有技术公开了一种采 ^光取向技术给各个子单元提供不同预倾角的 3D透镜， 可以在不施加电压的时候显示 3D画面， 但这种技术的缺陷是液晶 取向为混合取向， 液晶分子呈扭曲结构， 光透过率低。
( --) 要解决的技术问题
本发明要解决的技术问题是： 如何提供一种聚合物稳定液晶透镜及其制 备方法、 显示装置、 电子产品， 以提高透镜的光透过率。
(二） 技术方案
本发明提供一种聚合物稳定液晶透镜， 其包括： 第一基板、 第一电极、 液晶层、 第二电极和第二基板；
所述第一电极设置在所述第一基板上；
所述第二电极设置在所述第二基板上；
所述液晶层设置在所述第一电极和所述第二电极之间； 所述第一电极包 括多个电极单元， 多个所述电极单元与所述第二电极之间形成电压值呈周期 变化的周期电场；
所述液晶层包括聚合物和液晶分子， 所述液晶分子在所述聚合物稳定前 在所述周期电场作用下偏转， 并在所述聚合物稳定后保持所述偏转的角度。
其中， 所述液晶层沿所述多个电极单元的排列方向划分为与所述电极单 元数量相同的多个液晶层分区；
每个所述电极单元沿所述排列方向的长度与该电极单元投影区域内的所 述液晶层分区沿所述排列方向的长度相同；
每个所述液晶层分区内的液晶分子在所述周期电场作用下偏转相应角 度，所述聚合物稳定后每个所述液晶层分区内的液晶分子保持各自偏转角度， 且所述液晶层具有三维透镜效果。
其中， 所述液晶层中所述聚合物的含量小于 10%。
其中， 所述第一基板和所述第二基板采用树脂、 玻璃或者塑料材料。 本发明还提供一种显示装置， 所述显示装置的显示屏上设置有所述的聚 合物稳定液晶透镜。
本发明还提供一种聚合物稳定液晶透镜的制备方法， 其包括：
对设置有第一电极的第一基板和设置有第二电极的第二基板进行取向处 理， 将取向处理后的第一基板和第二基板对盒， 对盒后注入聚合物单体和液 晶分子的混合液， 所述第一电极包括多个电极单元；
令所述第一电极的多个电极单元和所述第二电极之间形成电压值呈周期 变化的周期电场， 每个所述电极单元的投影区域内的所述液晶分子在所述周 期电场作用下分别偏转相应角度；
保持所述周期电场， 对所述聚合物单体进行曝光形成稳定的聚合物。 其中， 在形成所述稳定的聚合物之后， 所述液晶分子分别保持各自的偏 转角度， 且所述液晶层具有≡维透镜效果。
其中， 所述对设置有第一电极的第一基板和设置有第二电极的第二基板 进行取向处理， 具体包括： 对设置有第一电极的第一基板和设置有第二电极 的第二基板采用光照方式进行取向处理。
其中， 所述对设置有第一电极的第一基板和设置有第二电极的第二基板 进行取向处理， 具体包括： 对设置有第一电极的第一基板和形成有第二电极 的第二基板采用摩擦方式进行取向处理。
其中， 所述对所述聚合物单体进行曝光， 具体包括： 对所述第一电极上 的每个电极单元对应区域内的所述聚合物单体采用掩膜板依次迸行曝光。
其中， 所述混合液中所述聚合物单体的含量小于 10%。
本发明还提供一种电子产品， 包括所述的显示装置。
(三） 有益效果
本发明实施例所提供的所述聚合物稳定液晶透镜及其制备方法、 显示装 置、 电子产品具有如下的技术效果： 所述聚合物稳定液晶透镜的液晶分子无 扭曲， 光透过率高， 并且液晶分子受到聚合物的稳定作用， 均匀稳定取向， 显示效果佳， 综合性能优异。 另外， 所述聚合物稳定液晶透镜可以在不施加 电场作用时有 3D显示效果， 节省电能。
图 i是本发明实施例 I所述聚合物稳定液晶透镜的结构示意图； 图 2是本发明实施例 2所述聚合物稳定液晶透镜的制备方法流程图； 图 3a至 3e是本发明实施例 2所述聚合物稳定液晶透镜的制备工艺流程 图。 具体实施方式
下面结合附图和实施例， 对本发明的具体实施方式作进一步详细描述。 以下实施例用于说明本发明， 但不用来限制本发明的范围。
图 1是本发明实施例 1所述聚合物稳定液晶透镜的结构示意图， 如图 1所 示，所述聚合物稳定液晶透镜包括： 第一基板 110、第一电极 120、液晶层 130、 第二电极 140和第二基板 150。
其中， 所述第一电极 120设置在所述第一基板！ 10上， 即设置在所述第一 基板 110靠近所述液晶层 130的一侧； 所述第二电极 !40设置在所述第二基板 150上，即设置在所述第二基板 150靠近所述液晶层 130的一侧；所述液晶层 130 设置在所述第一电极 120和所述第二电极 140之间。
具体地， 所述第一基板 110和所述第二基板 150可以采用树脂、 玻璃或者 塑料材料。
所述第一电极 120包括多个电极单元 121，在所述多个电极单元 121与所述 第二电极 140之间形成电压值呈周期变化的周期电场。
所述第一电极 120和所述第二电极 140为透明电极， 比如采用 ITO (Iridium tin oxide , 氧化铟锡）。
所述周期电场包括与所述电极单元 12!数量等同的电压值呈周期变化的 电场。 以下， 如图 1中所示， 以包括有 7个电极单元 121的所述第一电极 120为 例， 详细描述所述周期电场。 但是本发明并不限于此， 本领域技术人员可以 根据需要设定电极单元的数量。 具体地， 假设所述 7个电极单元 121从一侧至 另一侧的电压值 （单位伏） 依次设置为 0、 +2、 十 4、 +6、 -4, 2、 0， 所述第 二电极 140上的电压值设置为 0，则在所述第一电极 120的 7个电极单元 121和所 述第二电极 140之间形成 7个电场， 所述 7个电场电压值依次分别为 0、 +2、 +4、 +6, 4、 -2、 0， 所述 7个电场的电压值呈周期变化， 构成一个周期电场。 所 述周期电场的电场电压可以根据实际需要进行调整， 并不局限与上述假设的 电压值。 另外， 所述第一电极 120包括的电极单元 121的数量并不固定为 7个， 其可以根据显示装置的显示屏的尺寸设置， 比如还可以设置为 9个或 11个等。
所述液晶层 130包括聚合物 132和液晶分子 131， 所述液晶分子 131在所述 聚合物 132稳定之前在所述周期电场作用下偏转， 并在所述聚合物 132稳定之 后保持所述偏转的角度。
具体地， 所述聚合物 132稳定前为多个聚合物单体， 所述液晶分子 131和 所述聚合物孳体混合构成混合液。在所述周期电场作 ^下， 所述液晶分子 131 发生偏转， 并且所述液晶层 130沿所述多个电极孳元 m的排列方 ί 划分为与 所述电极孳元 121数量相同的多个液晶层分区， 每个所述电极单元 121沿所述 排列方向的长度与该电极单元 m投影区域内的所述液晶层分区沿所述排列 方向的长度相同， 每个所述液晶层分区内的液晶分子在所述周期电场作用下 偏转相应角度，所有所述液晶层分区内的所述液晶分子 131的偏转角度呈周期 性。 当对所述聚合物单体进行聚合处理时， 所述聚合物单体沿着所述液晶分 子 131的偏转方向聚合， 最终形成稳定的聚合物 132, 所述聚合物 132稳定后每 个所述液晶层分区内的液晶分子 131保持各自偏转角度， 且所述液晶层 ! 30具 有 3D透镜效果。 这时撤去周期电场， 所述液晶分子 131也会在稳定的聚合物 132中保持各自的偏转角度， 形成具有 3D透镜效果的聚合物稳定液晶透镜。
优选地， 所述液晶层 130中所述聚合物 ! 32的含量小于 10%。
本实施例所述聚合物稳定液晶透镜具有如下的优点： 液晶分子无扭曲， 光透过率高， 液晶分子受到聚合物的稳定作用， 均匀稳定取向， 显示效果佳， 综合性能优异。 另外， 所述聚合物稳定液晶透镜可以在不施加电场作用时有 3D显示效果， 因此节省电能。 实施例 2
图 2是本发明实施例 2所述聚合物稳定液晶透镜的制备方法流程图。 图 3a 至 3e是本发明实施例 2所述聚合物稳定液晶透镜的制备工艺流程图。 参见图 2 以及图 3a至图 3e所示， 所述方法包括：
步骤 210: 对设置有第一电极 320的第一基板 310和设置有第二电极 340的 第二基板 350进行取向处理， 将取向处理后的第一基板 310和第二基板 350对 盒， 对盒后注入聚合物单体 333和液晶分子 331的混合液， 所述第一电极 320 包括多个电极单元。
具体地， 所述步骤 210可以进一步包括：
步骤 21 h 在第一基板 310上设置第一电极 320, 所述第一电极 320包括多 个电极单元 321。
步骤 212： 在第二基板 350上设置第二电极 340。
其中， 所述第一基板 310和所述第二基板 350可以采用树脂.、 玻璃或者塑 料材料。 所述第一电极 320和所述第二电极 340为透明电极， 比如采用 ITO。
步骤 213 : 对设置有第一电极 320的第一基板 310和设置有第二电极 340的 第二基板 350采用光照方式迸行取向处理。
本步骤 213中， 还可以采用摩擦方式进行取向处理。 当采用摩擦方式时， 后续步骤中液晶分子 331会有一定的预倾角， 影响后续施加电场后的液晶分 布， 虽然也能实现本发明方案， 但效果不及采用光照方式。 因此， 本实施例 优选采用光照方式对所述液晶分子 331进行取向处理。如图 3a所示， 当采用光 照方式进行取向处理后， 所述液晶分子 331的预倾角接近 0， 所述液晶分子 331 呈水平取向。
步骤 214: 将取向处理后的第一基板 310和第二基板 350对盒， 所述第一电 极 320和所述第二电极 340相对设置。
步骤 215 : 对盒后注入聚合物单体 333和液晶分子 331的混合液。
其中， 所述混合液中所述聚合物单体 333的含量小于 10%。
步骤 220: 令所述第一电极 320的多个电极单元 321和所述第二电极 340之 间形成电压值呈周期变化的周期电场，每个所述电极单元 321的投影区域内的 所述液晶分子 331在所述周期电场作用下分别偏转相应角度。
所述周期电场包括与所述电极单元 321数量等同的电压值呈周期变化的 电场。 参见图 3b , 每个电极单元 321对应区域内的所述液晶分子 331在该电极 单元 321与所述第二电极 340所形成电场作用下偏转相应的角度， 整个周期电 场内的所述液晶分子 331的偏转角度呈周期性。
步骤 230: 保持所述周期电场， 对所述聚合物单体 333进行曝光形成稳定 的聚合物 332。
其中， 所述稳定的聚合物 332使所述液晶分子 331分别保持各自的偏转角 度， 包含着所述液晶分子 331的所述稳定的聚合物 332即所述液晶层具有 3D透 镜效果。
具体地， 该步骤 230中可以对所述聚合物单体 333迸行整体曝光， 即同时 对所述第一电极 320和所述第二电极 340之间的所有所述聚合物单体 333进行 曝光， 以使所有所述聚合物单体 333聚合形成稳定的聚合物 332。 采用该种聚 合方式， 虽然可以实现本发明方案， 但是， 由于整体曝光时各相邻电极孳元 321对应区域内的聚合物单体 333之间会有作用， 即形成共价键， 因此， 各相 邻电极单元 321交界处的液晶分子 331的稳定状态会受到影响。
本实施例中， 优选地， 对所述第一电极 320上的每个电极单元 321对应区 域内的所述聚合物单体 333采用掩膜板 360依次进行曝光。
首先参见图 3c, 当采用掩膜板 360对第一个电极单元 321对应区域内的所 述聚合物单体 333进行曝光时， 该区域内的聚合物单体 333聚合形成部分稳定 的聚合物， 此时， 第二个电极单元 321对应区域内的所述聚合物单体 333未进 行曝光， 第一个电极单元 321和第二个电极单元 321交界处的聚合物单体 333 之间不易生成共价键。
参见图 3d， 当采用掩膜板 360对第二个电极单元 321对应区域内的所述聚 合物单体 333进行曝光时， 该区域内的聚合物单体 333聚合形成部分稳定的聚 合物， 此时， 第三个电极单元 321对应区域内的所述聚合物单体 333未迸行曝 光，第二个电极单元 321和第三个电极单元 321交界处的聚合物单体 333之间不 易生成共价键； 同时， 由于第一个电极单元 321对应区域内的所述聚合物单体 333已经形成部分稳定的聚合物， 第二个电极单元 321和第一个电极单元 321 交界处的聚合物单体 333之间也不易生成共价键。 依次类推， 参见图 3e， 当采 用掩膜板 360对最后一个电极单元 321对应区域内的所述聚合物单体 333进行 曝光后， 所有所述聚合物单体 333形成稳定的聚合物 332。 这时， 去除所述周 期电场后， 所述液晶分子 331 {J然保持在所述步骤 230中的偏转角度， 从而形 成聚合物稳定液晶透镜。
另外，当所述第一电极 320和所述第二电极 340之间形成多个周期电场时, 可以按照周期电场的周期对每个电极单元 321对应区域内的所述聚合物单体 333依次进行曝光， 即首先对所有周期电场中第一个电极单元 321对应区域内 的所述聚合物单体 333迸行曝光， 再对所有周期电场中第二个电极单元 321对 应区域内的所述聚合物单体 333进行曝光，再对所有周期电场中第三个电极单 元 321对应区域内的所述聚合物单体 333迸行曝光， 依次类推， 直至对所有周 期电场中最后一个电极单元 321对应区域内的所述聚合物单体 333进行曝光。
本实施例所述聚合物稳定液晶透镜的制备方法，每个电极单元 321对应区 域内的聚合物单体 333无需进行不同强度的曝光， 对液晶分子 331的预倾角的 控制要求较低， 制备工艺筒单， 易于实施。 同时， 制备得到的聚合物稳定液 晶透镜中， 液晶分子无扭曲， 光透过率高， 液晶分子受到聚合物的稳定作用， 均匀稳定取向， 显示效果佳， 综合性能优异。 另外， 所述聚合物稳定液晶透 镜可以在不施加电场作用时有 3D显示效果， 节省电能。 实施例 3
本实施例 3提供一种显示装置， 所述显示装置包括实施例 1所述聚合物稳 定液晶透镜。 由于所述聚合物稳定液晶透镜可以在不施加电场作用时有 3D显 示效果， 因此不需要直接做入模组中， 可以采用贴膜的形式贴覆于显示屏表 面， 从而易于在维修日寸进行更换。
其中， 所述显示装置可以是电视、 手机、 平板电脑等。
本实施例 4提供一种电子产品，所述电子产品包括实施例 3所述显示装置。 由于所述显示装置中的所述聚合物稳定液晶透镜可以在不施加电场作用时有 3D显示效果， 因此不需要将所述聚合物稳定液晶透镜直接做入模组中， 可以 采用贴膜的形式贴覆于所述电子产品的显示屏表面， 从而易于在维修时进行 更换。
其中， 所述电子产品可以是家用电器、 通信设备、 工程设备、 电子娱乐 厂 P口寺 本发明实施例所述聚合物稳定液晶透镜， 液晶分子无扭曲， 光透过率高， 液晶分子受到聚合物的稳定作用， 均匀稳定取向， 显示效果佳， 综合性能优 异。另外，所述聚合物稳定液晶透镜可以在不施加电场作用时有 3D显示效果， 节省电能。 所述制备方法中， 每个电极单元对应区域内的聚合物 m体无需迸 行不同强度的曝光， 对液晶分子的预倾角的控制要求较低， 制备工艺简孳， 易于实施。
以上实施方式仅用于说明本发明， 而并非对本发明的限制， 本技术领域 的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做出各种 变化和变型， 因此所有等同的技术方案也属于本发明的范畴， 本发明的专利 保护范围应由权利要求限定

Claims

1、一种聚合物稳定液晶透镜， 其特征在于， 包括： 第一基板、第一电极、 液晶层、 第二电极和第二基板；
所述第一电极设置在所述第一基板上；
所述第二电极设置在所述第二基板上；
所述液晶层设置在所述第一电极和所述第二电极之间； 所述第一电极包 括多个电极单元， 多个所述电极单元与所述第二电极之间形成电压值呈周期 变化的周期电场；
所述液晶层包括聚合物和液晶分子， 所述液晶分子在所述聚合物稳定前 在所述周期电场作用下偏转， 并在所述聚合物稳定后保持所述偏转的角度。
2、 如权利要求!所述的聚合物稳定液晶透镜， 其特征在于，
所述液晶层沿所述多个电极单元的排列方向划分为与所述电极单元数量 相同的多个液晶层分区；
每个所述电极单元沿所述排列方向的长度与该电极单元投影区域内的所 述液晶层分区沿所述排列方向的长度相同；
每个所述液晶层分区内的液晶分子在所述周期电场作用下偏转相应角 度，所述聚合物稳定后每个所述液晶层分区内的液晶分子保持各自偏转角度, 且所述液晶层具有三维透镜效果。
3、 如权利要求 1或 2所述的聚合物稳定液晶透镜， 其特征在于， 所述液晶 层中所述聚合物的含量小于 10%。
4、 如权利要求 1至 3中任一项所述的聚合物稳定液晶透镜， 其特征在于， 所述第一基板和所述第二基板采用树脂、 玻璃或者塑料材料。
5、 一种显示装置， 其特征在于， 所述显示装置的显示屏上设置有权利要 求 1至 4中任一项所述的聚合物稳定液晶透镜。
6、 一种聚合物稳定液晶透镜的制备方法， 其特征在于， 包括：
对设置有第一电极的第一基板和设置有第二电极的第二基板进行取向处 理， 将取向处理后的第一基板和第二基板对盒， 对盒后注入聚合物单体和液 晶分子的混合液， 所述第一电极包括多个电极单元；
令所述第一电极的多个电极单元和所述第二电极之间形成电压值呈周期 变化的周期电场， 每个所述电极单元的投影区域内的所述液晶分子在所述周 期电场作用下分别偏转相应角度；
保持所述周期电场， 对所述聚合物单体进行曝光形成稳定的聚合物。
7、 如权利要求 6所述的方法， 其特征在于， 在形成所述稳定的聚合物之 后， 所述液晶分子分别保持各自的偏转角度， 且所述液晶层具有三维透镜效 果。
8、 如权利要求 6或 7所述的方法， 其特征在于， 所述对设置有第一电极的 第一基板和设置有第二电极的第二基板进行取向处理， 具体包括： 对设置有 第一电极的第一基板和设置有第二电极的第二基板采用光照方式进行取向处 理。
9、 如权利要求 6或 7所述的方法， 其特征在于， 所述对设置有第一电极的 第一基板和设置有第二电极的第二基板进行取向处理， 具体包括： 对设置有 第一电极的第一基板和设置有第二电极的第二基板采 ffi摩擦方式进行取向处 理。
10、 如权利要求 6至 9中任一项所述的方法， 其特征在于， 所述对所述聚 合物单体进行曝光， 具体包括： 对所述第一电极上的每个电极单元对应区域 内的所述聚合物单体采用掩膜板依次进行曝光。
11、 如权利要求 6至 9中任一项所述的方法， 其特征在于， 所述混合液中 所述聚合物孳体的含量小于 10%。
12、 一种电子产品， 其特征在于， 包括如权利要求 5所述的显示装置。
PCT/CN2013/089722 2013-07-31 2013-12-17 一种聚合物稳定液晶透镜及其制备方法、显示装置、电子产品 Ceased WO2015014081A1 (zh)

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