CN102890372B - Liquid crystal grating, preparation method thereof and 3D display device - Google Patents
Liquid crystal grating, preparation method thereof and 3D display device Download PDFInfo
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Abstract
The invention discloses a liquid crystal grating, a preparation method of the liquid crystal grating and a 3D display device. The ultraviolet light irradiates a macromolecule network anchoring liquid crystal generated by polymerizing a reactive monomer under the function of a photoinitiator between a first base plate and a second base plate, so that the liquid crystal is under the isotropous phase state, so as to replace an orientation layer to carry out the parallel orientation on liquid crystal molecules. The liquid crystal under the isotropous phase state anchored by a macromolecule network has no phase delay function to the passed light, therefore, a light shielding region in the grating watched from each angle is under the state of dark field, and the phenomenon of light leakage can be avoided; and within a light transmission region, the liquid crystal can be converted into the anisotropic phase state from the isotropous phase state under the function of an electric field due to a kerr optical effect, and the phase delay function can be carried out on the passed light, so that the light can pass through the liquid crystal grating, and the effect of barrier screening can be realized. Furthermore, an orientation layer does not need to be prepared when the liquid crystal grating is prepared, so that the technology can be simplified, and the production cost can be saved.
Description
Technical field
The present invention relates to dimension display technologies field, particularly relate to a kind of liquid crystal grating, its preparation method and 3D display device.
Background technology
People utilize two eyes to observe to have the external scene of space multistory sense around in daily life, three-dimensional (3D) display technique utilizes binocular stereo vision principle to make people obtain three dimensions sense exactly, its cardinal principle makes the left eye of beholder and right eye receive different images respectively, the position difference produced by the interpupillary distance between beholder two, make two sub-pictures of existence " binocular parallax " form a pair " stereopair ", and " stereo pairs " make beholder produce stereoscopic sensation after merging via brains analysis.
At present, 3D display technique has bore hole formula and the large class of spectacle two.So-called bore hole formula is exactly by carrying out special process on a display panel, the 3D video image through coded treatment is independently sent into the right and left eyes of people, thus makes user without the need to bore hole experiencing stereo perception by anaglyph spectacles.
At present, the display device realizing bore hole 3D display is arrange the veils such as optical barrier (Barrier) or grating in the array of source front of such as liquid crystal display (LCD), as shown in Figure 1, vertical or that horizontal direction is angled slice grid pattern is formed by the light of the striped of optical barrier or grating, i.e. " parallax barrier ", under 3D display mode, by optical barrier or grating, left-eye image image information is separated selectively with eye image image information, reaches the effect of 3D display.
In order to realize 3-D display, a kind of scheme of the prior art increases one deck liquid crystal grating on a display screen, as shown in Figure 2, liquid crystal grating is generally made up of upper polaroid, lower polaroid, upper substrate, infrabasal plate and the liquid crystal layer between two substrates, upper substrate and infrabasal plate have strip shaped electric poles and face electrode respectively, and upper polaroid is mutually vertical with the light transmission direction of principal axis of lower polaroid; Liquid crystal layer can be formed by Twisted Nematic liquid crystal, makes liquid crystal layer not execute the torsion angle in alive situation with 90 degree because upper substrate is different with the liquid crystal initial orientation of infrabasal plate.The windup-degree of above-mentioned liquid crystal matches with the light transmission direction of upper and lower polaroid, making liquid crystal grating be normal bright pattern when not being energized, having 2D display mode; The principle of work of its 3D display mode is as follows:
When liquid crystal grating is energized, the windup-degree of the liquid crystal molecule between the strip shaped electric poles of energising and face electrode changes, and other liquid crystal molecules keep original form, do not deflect.Now, light enters from lower polaroid, the polarized light parallel with the light transmission direction of principal axis of lower polaroid enters into liquid crystal layer, polarized light progressively can change direction of vibration when passing through the liquid crystal do not deflected, the direction of vibration arriving polarized light during upper polarizer is just parallel with the light transmission direction of principal axis of upper polarizer, then light passes through; And direction of vibration can not be changed during liquid crystal that polarized light is changed by torsion angle, the direction of vibration arriving polarized light during upper polarizer is vertical with the light transmission direction of principal axis of upper polarizer, the barrier fence of formation strip, achieves three dimensional grating display mode.
In the liquid crystal grating of said structure, because the impact of fringe field causes the liquid crystal molecule near it to arrange not according to anticipated orientation between adjacent stripe-like electrode, affect optical effect and can form uncontrolled region, make the liquid crystal molecule corresponding with it not by the control of electric field, normal bright state can be at uncontrolled region liquid crystal grating always, thus, can produce light leakage phenomena cause cross-interference issue when barrier fence alternately changes, the picture quality that 3D is shown and contrast reduce.
In disclosed patent CN101782695A, have employed above two adjacent electrode gap locations auxiliary electrode in addition avoids electrode gap to be in non-control state, make the liquid crystal grating at auxiliary electrode place be in normal dark state always, thus decrease the cross-interference issue that generation light leakage phenomena causes when barrier fence alternately changes, but the making step of the electrode structure of this three layers and driving circuit all relative complex, significantly can increase cost of manufacture.
In disclosed patent CN1975510A, liquid crystal grating is become normal dark pattern from normal bright pattern, make the liquid crystal grating in uncontrolled region between strip shaped electric poles for normal dark state, decrease the cross-interference issue that light leakage phenomena is brought, but, general liquid crystal molecule in liquid crystal grating needs the consistance of the arrangement reaching liquid crystal molecule in parallel-oriented mode, and the parallel-oriented of liquid crystal molecule is that the surface utilizing alignment agent PI to be coated to upper substrate and infrabasal plate forms alignment films, in alignment films, groove mark is generated through friction, induction long axis of liquid crystal molecule is parallel to array base palte arrangement.When practical operation, because oriented layer is distributed in the inner surface of upper substrate and infrabasal plate, little to the orientation effect of the liquid crystal molecule of centre, make whole liquid crystal can not ensure the consistance arranged in parallel direction, cause light to there will be light scattering phenomenon when the liquid crystal molecule corresponding by strip shaped electric poles gap, normal dark state can not be ensured completely, namely can there is the phenomenon of light leak from different angles viewing liquid crystal grating, this also can cause cross-interference issue, thus affects 3D display effect.
Summary of the invention
Embodiments provide a kind of liquid crystal grating, its preparation method and 3D display device, cause the problem of crosstalk in order to solve existing liquid crystal grating light leakage phenomena.
A kind of liquid crystal grating that the embodiment of the present invention provides, comprising: first substrate, second substrate and be filled in liquid crystal and the macromolecule network of the isotropy phase between described first substrate and second substrate; Described macromolecule network is used for making described liquid crystal keep isotropy phase by grappling effect;
Towards the one side of described liquid crystal, there is electrode structure at described first substrate and/or second substrate, under 3D display mode, the electric field that described electrode structure produces makes the phase of the liquid crystal corresponding with it change anisotropy phase into from isotropy phase, forms light transmissive region.
A kind of 3D display device that the embodiment of the present invention provides, comprises display device and is arranged at the liquid crystal grating above described display device, the above-mentioned liquid crystal grating that described liquid crystal grating provides for the embodiment of the present invention.
The preparation method of a kind of liquid crystal grating that the embodiment of the present invention provides, comprising:
The potpourri comprising the liquid crystal of nematic phase phase, chiral additives, reactive monomer and light trigger is added between two substrates, and carries out encapsulation process;
Liquid crystal after heating encapsulation process, makes described liquid crystal change isotropy phase into from nematic phase phase under the effect of described chiral additives;
Carry out UV-irradiation process, described reactive monomer is polymerized under the effect of described light trigger, generate macromolecule network, the grappling effect of described macromolecule network makes liquid crystal keep isotropy phase.
The beneficial effect of the embodiment of the present invention comprises:
A kind of liquid crystal grating that the embodiment of the present invention provides, its preparation method and 3D display device, between first substrate and second substrate, by the macromolecule network grappling liquid crystal that the polymerization of UV-irradiation reactive monomer under the effect of light trigger generates, make liquid crystal be in isotropy phase, instead of and carry out parallel-oriented by oriented layer to liquid crystal molecule.Owing to be there is no phase delay effect by the liquid crystal of the isotropy phase of macromolecule network grappling to the light passed through, like this, be all details in a play not acted out on stage, but told through dialogues state from the light occlusion area the grating that all angles are watched, there is not light leakage phenomena; And in light transmissive region, liquid crystal can change anisotropy phase into from isotropy phase due to Ke Er optical effect under the effect of electric field, phase delay effect is produced to the light passed through, make it through liquid crystal grating, thus realize the effect of barrier fence.Further, when preparing liquid crystal grating due to without the need to preparing oriented layer, also simplify technique, saving production cost.
Accompanying drawing explanation
Fig. 1 is existing bore hole formula 3D displaying principle figure;
Fig. 2 is the structural representation of liquid crystal grating in prior art;
The structural representation of the liquid crystal grating that Fig. 3 a and Fig. 3 b provides for the embodiment of the present invention;
The electrode structure schematic diagram of the liquid crystal grating that Fig. 4 a-Fig. 4 c provides for the embodiment of the present invention;
The process flow diagram of the preparation method of the liquid crystal grating that Fig. 5 provides for the embodiment of the present invention;
The form schematic diagram of liquid crystal in the liquid crystal grating that Fig. 6 a-Fig. 6 d provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of liquid crystal grating, its preparation method and 3D display device that the embodiment of the present invention provides is described in detail.
The actual proportions of each layer film thickness and area size shape not reflecting liquid crystal grating in accompanying drawing, object just signal illustrates content of the present invention.
Embodiments provide a kind of liquid crystal grating, as shown in Figure 3 a and Figure 3 b shows, specifically comprise: first substrate 01, second substrate 02 and be filled in liquid crystal 03 and the macromolecule network 04 of the isotropy phase between first substrate 01 and second substrate 02; This macromolecule network 04 is for making liquid crystal 03 keep isotropy phase by grappling effect;
To have in electrode structure 05(Fig. 3 a towards the one side of liquid crystal 03 at first substrate 01 and/or second substrate 02 and illustrate to arrange electrode structure 05 on second substrate 02), under 3D display mode, as shown in Figure 3 b, the electric field that electrode structure 05 produces makes the phase of the liquid crystal 03 corresponding with it change anisotropy phase into from isotropy phase, forms light transmissive region.
Further, in above-mentioned liquid crystal grating as shown in Figure 3 a and Figure 3 b shows, the one side that first substrate 01 deviates from liquid crystal 03 has the first polaroid 06, the one side that second substrate 02 deviates from liquid crystal 03 has the second polaroid 07, and this first polaroid 06 is mutually vertical with the light transmission direction of principal axis (Fig. 3 a is with the direction of arrow in Fig. 3 b Suo Shi) of the second polaroid 07.
Particularly, above-mentioned macromolecule network 04 can be under the effect of light trigger, is polymerized generating by UV-irradiation reactive monomer; The mesh size of the macromolecule network 04 of isotropy phase is kept generally to be not more than the wavelength of visible ray for being made liquid crystal 03 by grappling effect.Because the mesh in macromolecule network may occur with non-regular shape, the mesh size therefore in the present embodiment can judge with the equivalent diameter of mesh, and namely the equivalent diameter of the mesh of macromolecule network 04 is not more than the wavelength of visible ray.Wherein, described equivalent diameter refers on the limit of mesh between any two points ultimate range.
The above-mentioned liquid crystal grating that the embodiment of the present invention provides be utilize isotropy phase liquid crystal to have Ke Er optical effect to realize light occlusion area and the light transmissive region of grating.
Under normal conditions; as shown in Figure 3 a; light is forming the linearly polarized light consistent with its light transmission axle after the second polaroid 07; because macromolecule network 04 grappling effect makes liquid crystal 03 keep isotropy phase; to the light through liquid crystal 03 without phase delay effect; like this through the linearly polarized light of liquid crystal 03 and the light transmission direction of principal axis of the first polarized light 06 inconsistent; form details in a play not acted out on stage, but told through dialogues; namely liquid crystal grating is blank screen; cannot see image, the data message that can show the display device 08 be positioned under liquid crystal grating plays the effect of protection.
When 3D display mode, liquid crystal grating is formed light occlusion area and light transmissive region, does not have energising to produce electric field at the electrode structure 05 of light occlusion area, therefore the phase of liquid crystal 03 can not change, identical with the liquid crystal grating under normality like this, as shown in Figure 3 a, be details in a play not acted out on stage, but told through dialogues at light occlusion area, light not by, and, be all details in a play not acted out on stage, but told through dialogues state from the light occlusion area the grating that all angles are watched, there will not be the phenomenon of light leak, also can not cause cross-interference issue.As shown in Figure 3 b, electric field can be produced after the electrode structure 05 of light transmissive region is energized, because the liquid crystal 03 of Ke Er optical effect isotropy phase progressively has birefringence, phase changes anisotropy into, its anisotropic refractive index be proportional to electric field intensity value square, namely meet formula Δ n=λ KE
2, wherein, λ is incident wavelength, and K is Kerr constanr, and E is for applying electric field.Therefore, light has optical delay Δ nd after the liquid crystal 03 of anisotropy phase, and wherein, d is that the box of liquid crystal grating is thick.Because the electric field intensity applied is larger, anisotropic refraction rate is larger, and optical delay Δ nd is also larger, therefore can by the adjustment postponed liquid crystal optics, reach consistent with the light transmission direction of principal axis of the first polaroid 06 through the polarization direction of the linearly polarized light of liquid crystal 03, form light transmissive region.
Further, the electrode structure 05 in liquid crystal grating all can be energized, make it all produce electric field, the light of such display device all by liquid crystal grating, can realize 2D display.
Particularly, to the not strict restriction of electrode structure in above-mentioned liquid crystal grating, electrode structure 05 can be arranged on first substrate 01, also can be arranged on second substrate 02, can be such as senior super dimension field switch (ADS, Advanced Super Dimension Switch) or plane conversion (IPS, In Plane Switching) type can produce the electrode structure of multi-dimensional electric field or transverse electric field, electrode structure 05 can also for being arranged on the such as twisted-nematic (TN on first substrate 01 and second substrate 02 simultaneously, Twisted Nematic) electrode structure of type.
Brief description is carried out to the several frequently seen structure of electrode structure below.
Example one, IPS type: electrode structure is the multiple parallel strip shaped electric poles be arranged on first substrate 01 or second substrate 02, these strip shaped electric poles are generally arranged with layer, can certainly arrange on the different layers, not limit at this.On second substrate 02, arrange the structural representation of multiple strip shaped electric poles as shown in Figure 4 a, the transverse electric field produced when adjacent stripe-like electrode applies different voltage is as shown in dotted line in Fig. 4 a.When 2D display mode, adjacent stripe-like electrode leads to the electric signal of different voltage, produces transverse electric field, makes whole liquid crystal phase change anisotropy phase into, produces phase delay, enable the light of display device all pass through liquid crystal grating to the light passed through.When 3D display mode, be positioned at the strip shaped electric poles energising of light transmissive region, namely between the adjacent stripe-like electrode of light transmissive region, load the electric signal of different voltage, transverse electric field is formed in light transmissive region, the liquid crystal phase corresponding with it changes anisotropy phase into, enables light through liquid crystal grating; And the strip shaped electric poles being positioned at the light occlusion area of grating is not energized, corresponding liquid crystal, also without phase-state change, forms details in a play not acted out on stage, but told through dialogues.
Example two, ADS type: electrode structure is the multiple strip shaped electric poles be arranged on first substrate 01 or second substrate 02 and the face electrode insulated with strip shaped electric poles, these strip shaped electric poles are generally arranged with layer, can certainly arrange on the different layers, do not limit at this, face electrode and strip shaped electric poles are arranged on the different layers, as shown in Figure 4 b, second substrate 02 arranges multiple strip shaped electric poles 051 and the face electrode 053 with its insulation, between the two by insulation course 052 mutually insulated, strip shaped electric poles and face electrode load different electric signal, the transverse electric field produced is as shown in dotted line in Fig. 4 b.When 2D display mode, whole strip shaped electric poles adds electrical signals, face electrode loads the electric signal different from strip shaped electric poles, produce multi-dimensional electric field between the two, whole liquid crystal phase is made to change anisotropy phase into, phase delay is produced to the light passed through, enables the light of display device all pass through liquid crystal grating.When 3D display mode, be positioned at light transmissive region strip shaped electric poles energising and face electrode is charged, owing to there is voltage difference between strip shaped electric poles and face electrode, multi-dimensional electric field is produced between the strip shaped electric poles and face electrode of light transmissive region, the liquid crystal phase corresponding with it changes anisotropy phase into, enables light through liquid crystal grating; And the strip shaped electric poles being positioned at the light occlusion area of grating is not energized, corresponding liquid crystal, also without phase-state change, forms details in a play not acted out on stage, but told through dialogues.
Example three, TN type: electrode structure specifically comprises: as illustrated in fig. 4 c, be arranged on multiple parallel first strip shaped electric poles 054 of first substrate 01 towards liquid crystal 03 one side, and it is mutually vertical with the second strip shaped electric poles 055 towards second multiple parallel strip shaped electric poles 055, first strip shaped electric poles 054 of liquid crystal 03 one side to be arranged on second substrate 02.Apply different voltage when being energized between adjacent first strip shaped electric poles 054 thus produce transverse electric field, and, also apply different voltage when being energized between adjacent second strip shaped electric poles 055 thus produce transverse electric field, as shown by dashed lines in fig. 4 c (transverse electric field that in Fig. 4 c, not shown first strip shaped electric poles 054 produces).First strip shaped electric poles 054 and the second strip shaped electric poles 055 are mutually vertical, are also vertical relation between the transverse electric field that the transverse electric field correspondingly produced on first substrate 01 and second substrate 02 produce; Because liquid crystal is arranged with direction of an electric field, the liquid crystal near first substrate 01 is made also to become vertical relation with the arragement direction of the liquid crystal near second substrate 02, and the liquid crystal curl arrangement between first substrate 01 and second substrate 02, the liquid crystal be similar in traditional TN type liquid crystal display is initially arranged state.Because liquid crystal produces Kerr effect under the electric field action powered up, produce anisotropy, therefore after the first strip shaped electric poles and the second strip electrode application voltage, the liquid crystal molecule that light is arranged with spiral fashion deflects, make the polarized light passed through from the second polaroid 07 after the phase delay effect of liquid crystal molecule, consistent with the light transmission direction of principal axis of the first polaroid 06, produce transmission region.
Above-mentioned three examples just illustrate the concrete form of the electrode structure that the liquid crystal grating that the embodiment of the present invention provides can have, and the structure of other distortion is not describing in detail at this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of 3D display device, comprise display device and be arranged at the liquid crystal grating above display device, the above-mentioned liquid crystal grating that this liquid crystal grating provides for the embodiment of the present invention, the enforcement of this 3D display device see the enforcement of liquid crystal grating, can repeat part and repeats no more.
Wherein, display device is the display devices such as liquid crystal display (LCD), display of organic electroluminescence (OLED), plasma scope (PDP) or CRT display.
The preparation method of a kind of liquid crystal grating that the embodiment of the present invention provides, as shown in Figure 5, specifically comprises the following steps:
S501, the potpourri comprising the liquid crystal of nematic phase phase, chiral additives, reactive monomer and light trigger to be added between two substrates, and carry out encapsulation process;
Particularly, can by vacuum perfusion process or ODF(One Drop Filling) potpourri adds between two substrates of the liquid crystal grating that will be formed by instillation technique, and these techniques all belong to prior art, do not describe in detail at this.
Wherein, the quality of reactive monomer accounts for the 1%-30% of the gross mass of the liquid crystal of nematic phase phase and the potpourri of reactive monomer, the quality of light trigger accounts for the 0.1%-10% of the quality of reactive monomer, and the quality of chiral additives accounts for the 1%-15% of the gross mass of the liquid crystal of nematic phase phase and the potpourri of reactive monomer.
Particularly, the liquid crystal of nematic phase phase can be SLC7011, SLC7010 or E7; Chiral additives can be CB15; Reactive monomer can for the polymerizable organic molecule containing activity double key functional group; Light trigger can be light trigger 651 or light trigger 184.
Liquid crystal after S502, heating encapsulation process, makes liquid crystal change isotropy phase into from nematic phase phase under the effect of chiral additives, as shown in Figure 6 a;
Wherein, the temperature of heating generally keeps more than the clearing point temperature of liquid crystal.
S503, carry out UV-irradiation process, reactive monomer is polymerized under the effect of described light trigger, generate macromolecule network, the grappling effect of macromolecule network makes liquid crystal keep isotropy phase.
Particularly, can under maintenance liquid crystal isotropic phase state, carry out the UV-irradiation process of default intensity of illumination and light application time, reactive monomer is polymerized under the effect of light trigger, generate macromolecule network, as shown in Figure 6 b, the mesh size of this macromolecule network is not more than the wavelength of visible ray, general at nanoscale, like this, liquid crystal is progressively separated in reactive monomer polymerization process, and isotropy phase is kept under the grappling effect of macromolecule network, as fig. 6 c, afterwards, during liquid crystal grating cool to room temperature, liquid crystal isotropic phase state also can be kept.The liquid crystal of isotropy phase has Ke Er optical effect, the liquid crystal of isotropic phase can be made to have birefringence, as shown in fig 6d for applying the liquid crystal under extra electric field by applying extra electric field.
Particularly, intensity of illumination can be 1-30mW/cm
2, light application time is generally 1-120min.
A kind of liquid crystal grating that the embodiment of the present invention provides, its preparation method and 3D display device, between first substrate and second substrate, by the macromolecule network grappling liquid crystal that the polymerization of UV-irradiation reactive monomer under the effect of light trigger generates, make liquid crystal be in isotropy phase, instead of and carry out parallel-oriented by oriented layer to liquid crystal molecule.Owing to be there is no phase delay effect by the liquid crystal of the isotropy phase of macromolecule network grappling to the light passed through, like this, be all details in a play not acted out on stage, but told through dialogues state from the light occlusion area the grating that all angles are watched, there is not light leakage phenomena; And in light transmissive region, liquid crystal can change anisotropy phase into from isotropy phase due to Ke Er optical effect under the effect of electric field, phase delay effect is produced to the light passed through, make it through liquid crystal grating, thus realize the effect of barrier fence.Further, when preparing liquid crystal grating due to without the need to preparing oriented layer, also simplify technique, saving production cost.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a liquid crystal grating, is characterized in that, comprising: first substrate, second substrate and be filled in liquid crystal and the macromolecule network of the isotropy phase between described first substrate and second substrate; Described macromolecule network is used for making described liquid crystal keep isotropy phase by grappling effect;
Towards the one side of described liquid crystal, there is electrode structure at described first substrate and/or second substrate, under 3D display mode, the electric field that described electrode structure produces makes the phase of the liquid crystal corresponding with it change anisotropy phase into from isotropy phase, forms light transmissive region;
The mesh size of described macromolecule network is not more than the wavelength of visible ray.
2. liquid crystal grating as claimed in claim 1, it is characterized in that, the one side that described first substrate deviates from described liquid crystal has the first polaroid, the one side that described second substrate deviates from described liquid crystal has the second polaroid, and described first polaroid is mutually vertical with the light transmission direction of principal axis of described second polaroid.
3. liquid crystal grating as claimed in claim 2, it is characterized in that, the described electrode structure be arranged on described first substrate or second substrate specifically comprises multiple parallel strip shaped electric poles; When being energized, the adjacent stripe-like electrode being positioned at light transmissive region applies different voltage.
4. liquid crystal grating as claimed in claim 2, it is characterized in that, the described electrode structure be arranged on described first substrate or second substrate specifically comprises: face electrode and the multiple strip shaped electric poles with described electrode insulation; When being energized, the adjacent stripe-like electrode being positioned at light transmissive region applies different voltage from described electrode.
5. liquid crystal grating as claimed in claim 2, it is characterized in that, described electrode structure specifically comprises: be arranged on first strip shaped electric poles of described first substrate towards described liquid crystal one side, and being arranged on second strip shaped electric poles of described second substrate towards described liquid crystal one side, described first strip shaped electric poles is mutually vertical with described second strip shaped electric poles; When being energized, between adjacent first strip shaped electric poles of light transmissive region, applying different voltage, and also apply different voltage between adjacent second strip shaped electric poles.
6. a 3D display device, comprise display device and be arranged at the liquid crystal grating above described display device, it is characterized in that, described liquid crystal grating is the liquid crystal grating described in any one of claim 1 to 5.
7. 3D display device as claimed in claim 6, it is characterized in that, described display device is liquid crystal display, display of organic electroluminescence, plasma scope or cathode-ray tube.
8. a preparation method for liquid crystal grating, is characterized in that, comprising:
The potpourri comprising the liquid crystal of nematic phase phase, chiral additives, reactive monomer and light trigger is added between two substrates, and carries out encapsulation process;
Liquid crystal after heating encapsulation process, makes described liquid crystal change isotropy phase into from nematic phase phase under the effect of described chiral additives;
Carry out UV-irradiation process, described reactive monomer is polymerized under the effect of described light trigger, generate macromolecule network, the grappling effect of described macromolecule network makes liquid crystal keep isotropy phase.
9. preparation method as claimed in claim 8, is characterized in that, carry out UV-irradiation process, described reactive monomer is polymerized under the effect of described light trigger, generate macromolecule network, the grappling effect of described macromolecule network makes liquid crystal keep isotropy phase, specifically comprises:
Under the described liquid crystal isotropic phase state of maintenance, carry out the UV-irradiation process of default intensity of illumination and light application time, described reactive monomer is polymerized under the effect of described light trigger, and generate macromolecule network, the mesh size of described macromolecule network is not more than the wavelength of visible ray;
Described liquid crystal is progressively separated in described reactive monomer polymerization process, and keeps isotropy phase under the grappling effect of described macromolecule network.
10. preparation method as claimed in claim 9, it is characterized in that, described intensity of illumination is 1-30mW/cm
2, described light application time is 1-120min.
11. preparation methods as described in any one of claim 8-10, it is characterized in that, the quality of described reactive monomer accounts for the 1%-30% of the gross mass of the liquid crystal of nematic phase phase and the potpourri of reactive monomer, the quality of described light trigger accounts for the 0.1%-10% of the quality of described reactive monomer, and the quality of described chiral additives accounts for the 1%-15% of the gross mass of the liquid crystal of nematic phase phase and the potpourri of reactive monomer.
12. preparation methods as described in any one of claim 8-10, it is characterized in that, the liquid crystal of described nematic phase phase is SLC7011, SLC7010 or E7; Described chiral additives is CB15; Described reactive monomer is the polymerizable organic molecule containing activity double key functional group; Described light trigger is light trigger 651 or light trigger 184.
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| CN107132699A (en) * | 2017-07-14 | 2017-09-05 | 京东方科技集团股份有限公司 | A kind of preparation method of display panel, display device and display panel |
| CN110596944B (en) * | 2019-09-19 | 2022-11-04 | 京东方科技集团股份有限公司 | Display device and manufacturing method thereof |
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| CN1828373A (en) * | 2005-02-28 | 2006-09-06 | 精工爱普生株式会社 | Liquid crystal display device and electronic apparatus |
| CN101354459A (en) * | 2008-09-22 | 2009-01-28 | 北京科技大学 | Method for preparing liquid-crystal film material capable of reflecting circle polarized light and non-polarized light |
| CN201897675U (en) * | 2010-08-25 | 2011-07-13 | 天马微电子股份有限公司 | Liquid crystal grating and planar/stereoscopic switchable liquid-crystal display device |
| CN102692748A (en) * | 2012-05-03 | 2012-09-26 | 北京京东方光电科技有限公司 | Touch control grating, display device and method for realizing 3D and touch control functions |
| CN202815378U (en) * | 2012-09-29 | 2013-03-20 | 京东方科技集团股份有限公司 | Liquid crystal grating and three-dimensional (3D) display device |
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