CN102565898A - Polymeric membrane containing no cholesteric liquid crystal, polymeric membrane and reflecting type display module - Google Patents
Polymeric membrane containing no cholesteric liquid crystal, polymeric membrane and reflecting type display module Download PDFInfo
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- CN102565898A CN102565898A CN2010106024567A CN201010602456A CN102565898A CN 102565898 A CN102565898 A CN 102565898A CN 2010106024567 A CN2010106024567 A CN 2010106024567A CN 201010602456 A CN201010602456 A CN 201010602456A CN 102565898 A CN102565898 A CN 102565898A
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Abstract
The invention discloses a polymeric membrane containing no cholesteric liquid crystal, which is characterized by having a photonic crystal structure. The invention provides the polymeric membrane containing no cholesteric liquid crystal which has a photonic crystal structure and is an innovative product. The invention further discloses that the polymeric membrane can comprise a fluid which is filled in a membrane material of the polymeric membrane. By means of various different fluids, the polymeric membrane can produce reflecting light of different wavelengths through bragg reflection and thus is expanded in applicability. When the fluid is an anisotropic fluid, the polymeric membrane can also be applied to an electric-field-controlled reflecting type display module. In addition, the invention discloses a polymeric membrane replicated through stacking levorotation and dextrorotation liquid crystals, and the brightness of the reflected light can be enhanced.
Description
Technical field
The invention relates to a kind of optical crystal polymeric membrane, especially in regard to a kind of polymeric membrane, polymeric membrane and reflective display module that does not contain cholesterol liquid crystal.
Background technology
Along with flat display apparatus (Flat Panel Display; FPD) development of technology; And because of flat display apparatus has that build is frivolous, low power consumption and advantageous characteristic such as radiationless; Conventional cathode ray tube (Cathode Ray Tube, CRT) display device, and be applied to various electronic product have been replaced gradually.Wherein, cholesterol liquid crystal (Cholesteric Liquid Crystal) also is applied in display technique, particularly is applied in bistable display, like Electronic Paper.
Fig. 1 is the synoptic diagram of the molecules align of cholesterol liquid crystal 11.Cholesterol liquid crystal all has unsymmetrical carbon (chiral center) basically, and it can be to palm property cholesterol liquid crystal, or adds non-to palm property liquid crystal to palm property compound.By the liquid crystal that this quasi-molecule constituted, its molecule parllel is piled up layered arrangement, and layer and interlayer are parallel to each other, and molecule has a nematic generally arranging in the same way each other in each layer, and its major axis is parallel with aspect.Adjacent two-layer between, the long axis direction systematicness ground of molecule rotates to an angle successively, rotate helicoidal structure of formation layer by layer.After the long axis direction of liquid crystal molecule revolves 360 degree that turn around again; Get back to equidirectional again and form a pitch P, this type liquid crystal molecule can be so that incident light deflection based on special spiral structure; And scatter the light of special wavelength, and pitch is the wavelength of its reflection ray of being listed as the most by force of decision.
Fig. 2 and Fig. 3 show the molecules align synoptic diagram of cholesterol liquid crystal.As shown in Figure 2, cholesterol liquid crystal 11 is inserted and put by two glass substrates 12,13, and the bottom is provided with a black absorption layer 14.When no extra electric field, cholesterol liquid crystal 11 is snail type (planar texture), because its spiralization cycle (pitch) is approximately suitable with wavelength of light, this periodic structure can make the light of specific wavelength that Prague (Bragg) reflection takes place.Its catoptrical peak value is λ=nP (n is a mean refractive index).Generally, the light that it can be used to reflect particular range of wavelengths is applied in optical module and liquid crystal display design.Fig. 3 shows vertical spin type cholesterol liquid crystal (focal-conic) assortment.
At present, have the blooming design of Bragg reflection characteristic, can design, comprise that net cholesterol liquid crystal film or blending have the polymeric membrane of cholesterol liquid crystal by cholesterol liquid crystal.
Wherein, in macromolecule inert type cholesterol liquid crystal, be utilize to add a spot of monomer (concentration is 10% below), monomer formation macromolecule is dispersed in the cholesterol liquid crystal, make cholesterol liquid crystal reach the stability plane screw type and present the effect of Bragg reflection.Yet,, therefore significantly increase manufacturing cost because cholesterol liquid crystal incurs a considerable or great expense; Also so so far, still be difficult to extensively by practicability.
Therefore; How a kind of polymeric membrane of innovation is provided; Its photon crystal structure can not need cholesterol liquid crystal through costliness directly show; Polymeric membrane even need not have any liquid crystal or liquid just can have the Bragg reflection characteristic, significantly reduces cost of products and expands its application, has become the industry important topic.
Summary of the invention
Because above-mentioned problem; The polymeric membrane that the purpose of this invention is to provide a kind of innovation; It has photon crystal structure; And said photon crystal structure can not need cholesterol liquid crystal through costliness directly show, and said polymeric membrane even need not have any liquid crystal or liquid and just can have the Bragg reflection characteristic, significantly reduces cost of products and expands its application.
The present invention can adopt following technical scheme to realize.
Comprise a film material and a fluid according to a kind of polymeric membrane of the present invention.The film material has photon crystal structure, and is fluid-filled at the film material; Said fluid can be the material of side's property such as air, monomer or other and anisotropy.
Comprise that according to a kind of reflective display module of the present invention one has the polymeric membrane and the one drive circuit of photon crystal structure.Polymeric membrane comprises a film material and an anisotropy liquid.The film material has photon crystal structure, and anisotropy is liquid-filled at the film material.Driving circuit drives anisotropy liquid.
In one embodiment, photon crystal structure is a cholesteric liquid crystalline structure, and it can by cholesterol liquid crystal transfer printing (imprinting) or transfer printing forms to palm property liquid crystal hybrid optical active additive (chiral dopant) by non-.Though need to use liquid crystal in the processing procedure, can contain expensive cholesterol liquid crystal in the right made finished product, so can significantly reduce manufacturing cost.
In one embodiment, at least two of polymeric membrane districts have different pitch (pitch) and/or refractive index.Whereby, polymeric membrane can produce the reflected light of different wave length, expands its application.For example, polymeric membrane can produce trichromatic reflected light whereby and can be applied in reflective display module, shows static or dynamic colour picture, the appearance cromogram line design of for example installing as chromatic image record or solar cell etc.
In one embodiment, fluid is gas or liquid.Wherein, liquid such as is at side's property liquid or anisotropy liquid, and property liquid in the side's of grade for example is solvent, monomer or its mixing, and anisotropy liquid can be liquid crystal.Wherein, when fluid is anisotropy liquid, can controls anisotropy liquid through electric field driven and reach Presentation Function, and in applied display module, the amount of the required filling liquid of polymeric membrane (for example liquid crystal) can significantly reduce.Display module can for example be Electronic Paper, display, outdoor billboard, advertisement billboard etc.
In one embodiment, polymeric membrane can be arranged on a solar module.Because the reflected light wavelength can be controlled; Therefore the present invention can be applied in the surface color design of solar cell; Make the required wavelength light of solar cell through polymeric membrane, utilize the reflection of other visible wavelength, can design solar cell outward appearance cromogram line; Make solar cell can exempt the old-fashioned and inflexible outward appearance of conventional black.
In one embodiment, polymeric membrane is arranged on a backlight module with as optical reinforced film.
In one embodiment, polymeric membrane can link with a light-transmitting component, and light-transmitting component can for example be glass, polymeric membrane (for example release liners or plastic foil).Link through different medium and polymeric membrane; Can let polymeric membrane be applied in different occasions; For example can let polymeric membrane be applied in display through being arranged on glass; Can let polymeric membrane directly be attached to the position that needs demonstration through being arranged on another polymeric membrane, or can let polymeric membrane peddle to assembly plant with the mode of product through being arranged on release liners with adhesive means.
According to the blooming of a kind of sandwich construction of the present invention, it comprises most above-mentioned polymeric membranes, and said polymeric membrane is distinctly duplicated by left-handed and right-hand helicity liquid crystal, can strengthen the reflected light brightness of polymeric membrane whereby.Owing to use right-hand helicity or levorotation cholesterol liquid crystal to do transfer printing, only can reflect half the (50%) incident light in theory, therefore, just can make the blooming of all optical communication (100%) if polymeric membrane left-handed and that the dextrorotation cholesterol liquid crystal is duplicated is overlapped mutually.Again, can use technique known, for example illumination polymerization etc. make liquid crystal duplicate polymeric membrane and contain many spirals distance, and reflected light is expanded to reflection full visible light (400nm to 800nm).
Hold the above; The present invention provides a kind of polymeric membrane that does not contain cholesterol liquid crystal, but it has photon crystal structure, is an innovative product in fact; And polymeric membrane can not need have any liquid crystal or liquid just has the Bragg reflection characteristic, significantly reduces cost of products and expands its application.The present invention discloses above-mentioned polymeric membrane in addition can have fluid, fluid-filled film material at polymeric membrane.Through the refractive index of various different fluid, can let polymeric membrane produce the reflected light of different wave length through Bragg reflection, promote its application.When fluid was anisotropy liquid, polymeric membrane can also be applied in reflective display module.In addition, at least two districts of polymeric membrane of the present invention can have different pitch (pitch) and/or refractive index, can set up the colorful picture element and the sub-picture element thereof of polymeric membrane whereby, reach the colored purpose that shows.In addition, polymeric membrane of the present invention itself just has the function of chromatic filter layer and liquid crystal layer in the known LCD MODULE, and is therefore more frivolous and reduce cost, and the applied display module of polymeric membrane is flexible (flexible).In addition, the photon crystal structure of polymeric membrane of the present invention can not need contain expensive cholesterol liquid crystal, so can significantly reduce cost of products.
Description of drawings
Fig. 1 is the synoptic diagram of the molecules align of cholesterol liquid crystal;
Fig. 2 shows that cholesterol liquid crystal is the synoptic diagram that the snail type is arranged and had the Bragg reflection characteristic;
Fig. 3 shows that cholesterol liquid crystal is the synoptic diagram that the vertical spin type is arranged;
Fig. 4 is a kind of synoptic diagram with polymeric membrane of photon crystal structure of preferred embodiment of the present invention;
Fig. 5 is a kind of synoptic diagram with polymeric membrane filling fluid of photon crystal structure of preferred embodiment of the present invention;
Fig. 6 A to Fig. 6 C is the polymeric membrane of preferred embodiment of the present invention and the synoptic diagram that light-transmitting component links;
Fig. 7 is the process flow diagram of manufacturing approach of the polymeric membrane with photon crystal structure of preferred embodiment of the present invention;
Fig. 8 is the irradiation step is carried out in preferred embodiment of the present invention by light shield a synoptic diagram;
Fig. 9 A and Fig. 9 B are sweep electron microscope (SEM) striographs of the polymeric membrane xsect of preferred embodiment of the present invention;
When Figure 10 is polymeric membrane and the filling different liquids thereof of preferred embodiment of the present invention and to the synoptic diagram of the reflectivity of different wave length;
Figure 11 is the synoptic diagram that the polymeric membrane filling nematic crystal of preferred embodiment of the present invention is heated to the reflectivity of different temperatures;
Figure 12 is the irradiation step is carried out in preferred embodiment of the present invention by laser a synoptic diagram;
Figure 13 is the synoptic diagram of a kind of reflective display module of preferred embodiment of the present invention;
Figure 14 is the synoptic diagram that nesa coating is fitted in the both sides of polymeric membrane;
Figure 15 is the synoptic diagram that most polymeric membranes stack; And
Figure 16 is the synoptic diagram that polymeric membrane is arranged on solar module.
The main element symbol description:
11: cholesterol liquid crystal
12,13, G1, G2: glass substrate
14: the black absorption layer
2,2a, PF1, PF2: polymeric membrane
21: the film material
22: fluid
3: reflective display module
4: driving circuit
41: scan drive circuit
42: data drive circuit
A1: illumination area
L: laser head
LM: liquid crystal monomer potpourri
M: light shield
P: pitch
P11: sub-picture element
S: sealing
S01～S04: manufacturing approach step with polymeric membrane of photon crystal structure
SC: solar module
SD: data signals
SS: scanning signal
TC: nesa coating
Embodiment
Below will a kind of polymeric membrane, polymeric membrane and the reflective display module that does not contain cholesterol liquid crystal according to preferred embodiment of the present invention be described with reference to correlative type, wherein identical assembly will be explained with identical element numbers.
Please refer to shown in Figure 4ly, a kind of polymeric membrane 2 of preferred embodiment of the present invention has photon crystal structure (photonic crystal structure).Photon crystal structure for example is a cholesteric liquid crystalline structure, makes polymeric membrane 2 have the Bragg reflection characteristic.Cholesteric liquid crystalline structure can by cholesterol liquid crystal transfer printing (imprinting) or transfer printing forms to palm property liquid crystal (achiral LC) hybrid optical active additive (chiraldopant) by non-.Owing to do not contain expensive cholesterol liquid crystal in the product, so can significantly reduce cost.
Please refer to shown in Figure 5ly, the another kind of polymeric membrane 2a of preferred embodiment of the present invention not only has film material 21, and also filling one fluid 22 is at film material 21.Fluid can be gas or liquid.At film material 21, can change the light reflection wavelength of original film material 21 through filling fluid 22.Wherein, liquid such as is at side's property liquid or anisotropy liquid, and property liquid in the side's of grade for example is solvent, monomer or its mixing, and anisotropy liquid can be liquid crystal.Wherein, when liquid was monomer, monomer can for example be produced polyreaction through irradiation by polymerization, when producing polymerization, can make formation solid-state, can not need edge sealing, and promote the stability and the convenience of polymeric membrane.When fluid is anisotropy liquid; Can control the anisotropy fluid molecule through electric field driven and reach Presentation Function; Also can migrate to isotropic variations in refractive index, reach the reflection color change, be used for the design of response to temperature figure line through the anisotropy that temperature caused; Can certainly come ACTIVE CONTROL reflection color change by the application of heat device.And in applied display module, the amount of the required filling liquid of polymeric membrane (for example liquid crystal etc.) can significantly reduce.Display module can for example be Electronic Paper, display, outdoor billboard, advertisement billboard etc.In addition; Polymeric membrane of the present invention itself just has chromatic filter layer in the known LCD MODULE, reflection horizon, reaches the function of liquid crystal layer; Therefore can make the optical module design more frivolous and reduce cost, and the applied display module of polymeric membrane is flexible (flexible).
Above-mentioned polymeric membrane 2 or 2a can link to expand its application with a light-transmitting component.Light-transmitting component can for example be glass, polymeric membrane (for example release liners, plastic foil).Link through different medium and polymeric membrane; Can let polymeric membrane be applied in different occasions; For example can let polymeric membrane be applied in display module through being arranged on glass; Can let polymeric membrane directly be attached to the position that needs demonstration through being arranged on another polymeric membrane, or can let polymeric membrane peddle to assembly plant with the mode of product through being arranged on release liners with adhesive means.Shown in Fig. 6 A, polymeric membrane 2 (or 2a) is to be folded between two glass substrate G1, the G2, and polymeric membrane 2 (or 2a) around seal through sealing S.Shown in Fig. 6 B, polymeric membrane 2 (or 2a) is to link with another polymeric membrane PF1.Shown in Fig. 6 C, polymeric membrane 2 (or 2a) is to link with a polymeric membrane PF2 (or most polymeric membrane), and by its coating.The connection relationship of above-mentioned polymeric membrane and light-transmitting component only is for example, is not in order to restriction the present invention.
Figure 14 to Figure 16 shows the polymeric membrane of the different aspects of preferred embodiment of the present invention respectively.
Shown in figure 14, a nesa coating TC can be fitted in a side of polymeric membrane 2 (or 2a), is that the both sides up and down that are fitted in polymeric membrane 2 respectively with two nesa coating TC are example at this.Certainly, if polymeric membrane 2 only is used for showing that then the position can be non-printing opacity at the conducting film of downside at upside.Fluid (for example anisotropy liquid) the molecule assortment that is filled in the polymeric membrane, and refractive index can be controlled through nesa coating, and the reflected light color can be changed.
Shown in figure 15, most polymeric membranes 2 (or 2a) stack and become the polymeric membrane of a sandwich construction, and said polymeric membrane 2 can utilize left-handed liquid crystal and dextrorotation liquid crystal to process respectively, can strengthen the reflected light brightness of polymeric membrane whereby.Owing to use right-hand helicity or levorotation cholesterol liquid crystal to do transfer printing, only can reflect half the (50%) incident light in theory, therefore, just can make the blooming of all optical communication (100%) if polymeric membrane left-handed and that the dextrorotation cholesterol liquid crystal is duplicated is overlapped mutually.
Shown in figure 16, polymeric membrane 2 (or 2a) can be arranged on a solar module SC.Because the reflected light wavelength can be controlled; Therefore the present invention can be applicable to the surface color design of solar cell; Make the required wavelength light of solar module SC through polymeric membrane 2, utilize the reflection of other visible wavelength, can design solar cell outward appearance cromogram line; Make solar cell can exempt the old-fashioned and inflexible outward appearance of conventional black.
Below illustrate the manufacturing approach of polymeric membrane 2, as shown in Figure 7, it comprises that step S01 is to step S04.
Step S01: a blend step, mix one at least and non-palm property liquid crystal (achiral liquidcrystal), an optical activity adjuvant (chiral dopant), a monomer (monomer) and a smooth initiator (photo initiator) processed a liquid crystal monomer potpourri (liquid-crystal-monomermixture).In this step, can mix non-ly earlier to palm property liquid crystal, monomer and light initiator, add the optical activity adjuvant again in potpourri.At last potpourri is fills up to the pair of inside surface in the light transmission container (cell) (for example glass container) of parallel processing.In this step, also can directly use cholesterol liquid crystal (and light requirement is not learned active additive) blending, photon structure transfer printing processing procedure is carried out in the illumination polymerization.Glass container also can change any light transmission plastic foil etc. into.
In the present embodiment, non-palm property liquid crystal is meant that tool is not to the liquid crystal of palm property (chirality), for example nematic crystal or smectic liquid crystal.The optical activity adjuvant can be induced non-to palm property liquid crystal generation helical arrangement, and gives it to palm property, and the optical activity adjuvant for example is chloro biphenyl (cyanobiphenyl) derivant etc.Monomer can be monofunctional or bifunctional monomer or its mixing; At this is to be example with the bifunctional monomer; It can be the monomer with liquid crystal phase; Reach the effect of duplicating the cholesterol helical structure through photopolymerization reaction, monomer for example is BAHB (4,4 '-Bis (6-acryloyxy-hexyloxy) biphenyl).The effect of light initiator is to make monomer when irradiation, to produce photopolymerization reaction, and commercially available smooth initiator all can use.
In the present embodiment, non-percentage by weight to palm property liquid crystal is between 10% and 80%, and the percentage by weight of monomer is between 20% and 90%.At this, non-blending ratio to palm property liquid crystal, optical activity adjuvant, monomer and light initiator is 53%, 13%, 33% and 1%.After at room temperature mixing, the liquid crystal monomer potpourri presents the cholesteric liquid crystalline phase.Be noted that at this; Present embodiment can increase the polymeric transferring rate to palm property of polymeric membrane through the percentage by weight (being known in below 20%) that improves polymerization single polymerization monomer, and this helps to promote polymeric membrane and represents sufficient photon crystal structure and Bragg reflection characteristic.The constituent of this step also can use blending such as cholesterol liquid crystal and monomer, initiator; Be filled into the liquid crystal groove (cell) that parallel assortment is handled again.
Step S02: an irradiation step, through a light shield to liquid crystal monomer potpourri irradiation.At this is to carry out irradiation through ultraviolet light (for example 254nm etc.), and after illumination, monomer produces photopolymerization reaction and forms condensate, and palm property is transferred on the condensate with liquid crystal.Because present embodiment is to carry out transfer printing through the cholesteric liquid crystalline phase, so the photon crystal structure that polymeric membrane had is a cholesteric liquid crystalline structure.The synoptic diagram of irradiation step is as shown in Figure 8, and ultraviolet light to liquid crystal monomer potpourri LM irradiation, and forms at least one illumination area A1 via a light shield M.Do not limit the pattern of light shield M at this.
Step S03: a diffusing step, make liquid crystal monomer potpourri LM wherein an illumination area A1 around monomer diffuse to illumination area A1.Because illumination area is after irradiation, the monomer in it has become condensate, so the monomer concentration in the illumination area, makes that the monomer around the illumination area diffuses in the illumination area A1 less than the concentration of the monomer around the illumination area, in order to photopolymerization once more.So, can increase the aggregate rate of monomer.At this, in diffusing step, can the liquid crystal monomer potpourri be left standstill the time, and in the process that leaves standstill, avoid the liquid crystal monomer potpourri to receive illumination.In addition, manufacturing approach of the present invention can be carried out irradiation and diffusing step repeatedly, significantly increases the aggregate rate of monomer, wherein, in irradiation step repeatedly, can carry out irradiation to same area or zones of different.
Step S04: a liquid crystal is removed step, removes non-palm property liquid crystal to be formed a polymeric membrane.In this step, remove liquid crystal through an organic solvent, organic solvent for example is acetone or chloroform.Liquid crystal by removing fully in the polymeric membrane, and is made its drying.Because the difunctionality base has patience, thus monomer just do not dissolve in (crosslink) back of building bridge, so can avoid organic solvent to remove condensate.In addition, also can monofunctional monomer blending multiple functional radical monomer, and can form the bridging property macromolecule, avoid being dissolved in solvent.Fig. 9 A and Fig. 9 B are sweep electron microscope (SEM) striographs of polymeric membrane xsect, can see high molecular high conversion structure, and wherein Fig. 9 B is the enlarged drawing in the zone of diamond among Fig. 9 A.So far, can form polymeric membrane 2.
The polymeric membrane (Empty) that is produced after Figure 10 step display S04 is to the synoptic diagram of the reflectivity of different wave length.Even polymeric membrane does not contain liquid crystal molecule or other liquid, also has the Bragg reflection characteristic.In addition, manufacturing approach can also comprise a filling step, and filling one fluid is at polymeric membrane, and fluid can be gas or liquid, and liquid such as can be at side's property liquid or anisotropy liquid, and wherein, property liquid in the side's of grade for example is solvent, and anisotropy liquid for example is liquid crystal.Solvent for example be methyl alcohol, acetone, tetrahydrofuran (Tetrahydrofuran, THF), chloroform or toluene.Liquid crystal for example is cholesterol liquid crystal, nematic crystal or smectic liquid crystal.When Figure 10 also shows polymeric membrane filling methyl alcohol (refractive index=1.3284), acetone (refractive index=1.3586), THF (refractive index=1.4072), chloroform (refractive index=1.4458) and toluene (refractive index=1.4969) to the reflectivity of different wave length.Along with the solvent change of refractive, its reflected light wavelength is also inequality, and this phenomenon meets Bragg reflection principle λ=nP (n is a mean refractive index).
Shown in figure 11, with the polymeric membrane that is filled with nematic crystal, be heated to and surpass the waiting more than side's property phase temperature (about 90 spend) of said liquid crystal, polymeric membrane still has stable Bragg reflection characteristic.This shows that polymeric membrane of the present invention has splendid temperature stability.
In addition, after the filling fluid, the manufacturing approach of polymeric membrane can also comprise that fluid is further by polymerization.When making fluid produce polymerization, can make formation solid-state, edge sealing promotes stability and convenience.
In other embodiments, the blend step of the manufacturing approach of polymeric membrane can make to mix at least a pair of palm property liquid crystal, a monomer and a smooth initiator into and process a liquid crystal monomer potpourri.This be directly use to palm property liquid crystal come transfer printing to palm property to polymeric membrane, rather than palm property liquid crystal is added the optical activity adjuvant through non-.
In other embodiments, the manufacturing approach of polymeric membrane can also comprise an orientation step, and it is the said liquid crystal monomer potpourri of orientation.For example be to reach the orientation effect through the inner surface of light transmission container is handled through parallel orientation.Parallel orientation is handled can be through macromolecule, organic or inorganic layer is handled and can be via the parallel orientation processing of friction.When liquid crystal monomer was filled in light transmission container or in light transmission container, mix, the orientation step can make the liquid crystal monomer potpourri present snail type (planar texture).After orientation, the liquid crystal monomer potpourri is carried out the irradiation polymerization, carry out subsequent step then.
In other embodiments, the irradiation step of the manufacturing approach of polymeric membrane can make into through at least one illumination area irradiation of a laser to the liquid crystal monomer potpourri.With reference to shown in Figure 12, a laser head L is that the most illumination area A1 (like the dotted line scope) to liquid crystal monomer potpourri 2 shine, and makes the monomer of said illumination area A1 produce photopolymerization reaction and become condensate.And then monomer is diffused in the illumination area A1 through diffusing step.Certainly, can repeat repeatedly irradiation step and diffusing step increasing the aggregate rate of monomer, and in irradiation step repeatedly, laser can be beaten in same area or zones of different.In addition, the arrangement mode of the shape of illumination area A1 or most illumination area A1 does not limit at this.
In addition, no matter be to use light shield or laser or light shield to combine the method for laser to carry out the irradiation step, at least two illumination areas of liquid crystal monomer potpourri can have different irradiation number of times, irradiation intensity, irradiation time or diffusion time.Whereby, said illumination area can form different pitch (pitch) and/or refractive index and produce Bragg reflection with the light to different wave length, and the application of expansion polymeric membrane for example forms and adjacently can reflect trichromatic illumination area.
Please refer to shown in Figure 13ly, it is the applied reflective display module 3 of polymeric membrane of preferred embodiment of the present invention.Reflective display module 3 comprises that one has the polymeric membrane 2a and the one drive circuit 4 of photon crystal structure.Polymeric membrane 2a filling anisotropy liquid (anisotropic liquid), anisotropy liquid can comprise palm property liquid crystal (like cholesterol liquid crystal) or non-to palm property liquid crystal (like nematic crystal or smectic liquid crystal).Because polymeric membrane 2a details at the foregoing description, so repeat no more at this.Driving circuit 4 is to drive the rotation of anisotropy fluid molecule to be in different coordination directions with control anisotropy molecule, changes refractive index, reflected light color, to reach the demonstration purpose.
In the present embodiment, polymeric membrane 2a has most picture element P, and each picture element P has most sub-picture element P11, at this, sub-picture element P11 be with three be example, be respectively that R, G, B constitute a picture element P, the arrangement of said sub-picture element can be arranged according to various known methods.The pitch of said sub-picture element P11 (pitch) and/or refractive index are inequality.Because the reflection of the light of polymeric membrane 2 meets Bragg equation: λ=nP (n is a mean refractive index).So the present invention through the sub-picture element of different pitch or different refractivity or different pitch and refractive index is set, can reach the purpose of demonstration, for example as the demonstration of tableaux or dynamic menu, display module for example can be used as the chromatic image record.With present embodiment,,, reach the colored effect that shows so can show multiple color because each picture element has three primary colors.
Each small pin for the case picture element P11 can be for example through comprising that different liquids reaches different refractive index and pitch.In addition, can be through irradiation number of times or irradiation light wavelength, the difference of intensity or pitch and/or the refractive index that the difference of diffusion time changes each small pin for the case picture element P11 to each small pin for the case picture element P11.
Driving circuit 4 can comprise that a scan driving circuit 41 and a data drive circuit 42 are to drive a thin film transistor base plate of polymeric membrane 2.Scan drive circuit 41 can transmit scanning signal SS to thin film transistor base plate with turn-on transistor; Data drive circuit 42 can transmit data signals SD with driving transistors, and applies voltage so that the anisotropy fluid molecule operates in the different alignment state and reach the colored purpose that shows.
Be noted that; The reflective display module 3 of present embodiment not only reduces the use amount of anisotropy fluid molecule and must not use cholesterol liquid crystal and reduce cost; In addition; Polymeric membrane 2a itself just has the function of chromatic filter layer and liquid crystal layer in the known LCD MODULE, and is therefore more frivolous and reduce cost, and reflective display module 3 of the present invention is flexible (flexible).
In sum; The present invention provides a kind of polymeric membrane that does not contain cholesterol liquid crystal, but it has photon crystal structure, is an innovative product in fact; And polymeric membrane can not need have any liquid crystal or liquid just has the Bragg reflection characteristic, significantly reduces cost of products and expands its application.The present invention discloses above-mentioned polymeric membrane in addition can have fluid, fluid-filled film material at polymeric membrane.Through various fluid, can let polymeric membrane pass through the reflected light that the glug reflection produces different wave length, promote its application.When fluid was anisotropy liquid, polymeric membrane can also be applied in reflective display module.In addition, at least two districts of polymeric membrane of the present invention can have different pitch (pitch) and/or refractive index, can set up the picture element and the sub-picture element thereof of polymeric membrane whereby, reach the demonstration purpose.In addition, polymeric membrane of the present invention itself just has the function of chromatic filter layer and liquid crystal layer in the known LCD MODULE, and is therefore more frivolous and reduce cost, and the applied display module of polymeric membrane is flexible (flexible).In addition, the photon crystal structure of polymeric membrane of the present invention can not need to come transfer printing through the cholesterol liquid crystal of costliness, so can significantly reduce cost of products.
The above only is an illustrative, and non-limiting.Anyly do not break away from spirit of the present invention and category, and, all should be included in the claim institute restricted portion its equivalent modifications of carrying out or change.
Claims (22)
1. polymeric membrane that does not contain cholesterol liquid crystal, it is characterized in that: said polymeric membrane has photon crystal structure.
2. a polymeric membrane is characterized in that, comprising:
One film material has photon crystal structure; And
One fluid is filled in said film material.
3. according to each described polymeric membrane of claim 1 to 2, it is characterized in that said photon crystal structure is a cholesteric liquid crystalline structure.
4. polymeric membrane according to claim 3 is characterized in that, at least two districts of said polymeric membrane have different pitch.
5. according to each described polymeric membrane of claim 1 to 2, it is characterized in that at least two districts of said polymeric membrane have different refractive indexes.
6. polymeric membrane according to claim 2 is characterized in that, said fluid is gas or liquid.
7. polymeric membrane according to claim 6 is characterized in that, said liquid such as is at side's property liquid or anisotropy liquid.
8. side's property liquid such as polymeric membrane according to claim 7 is characterized in that, and is said are solvent, monomer or its mixing.
9. polymeric membrane according to claim 8 is characterized in that said monomer can be by polymerization.
10. polymeric membrane according to claim 7 is characterized in that, said anisotropy liquid is liquid crystal.
11., it is characterized in that a said polymeric membrane and a light-transmitting component link according to each described polymeric membrane of claim 1 to 2.
12. polymeric membrane according to claim 11 is characterized in that, said light-transmitting component is glass, polymeric membrane.
13., it is characterized in that said polymeric membrane is arranged on a solar module according to each described polymeric membrane of claim 1 to 2.
14., it is characterized in that said polymeric membrane is arranged on a backlight module according to each described polymeric membrane of claim 1 to 2.
15. a reflective display module is characterized in that, comprising:
One has the polymeric membrane of photon crystal structure, comprising:
One film material has photon crystal structure;
One anisotropy liquid is filled in said film material; And
One drive circuit drives this anisotropy liquid.
16. reflective display module according to claim 15 is characterized in that, said anisotropy liquid comprises palm property liquid crystal or non-to palm property liquid crystal.
17. reflective display module according to claim 16 is characterized in that, said is cholesterol liquid crystal to palm property liquid crystal.
18. reflective display module according to claim 16 is characterized in that, said non-be nematic crystal or smectic liquid crystal to palm property liquid crystal.
19. reflective display module according to claim 15 is characterized in that said photon crystal structure is a cholesteric liquid crystalline structure.
20. reflective display module according to claim 19 is characterized in that said polymeric membrane has most picture elements, each said picture element has most sub-picture elements, and the pitch and/or the refractive index of said sub-picture element are inequality.
21. the blooming of a sandwich construction is characterized in that, said blooming comprises most polymeric membranes as claimed in claim 1, and said polymeric membrane is distinctly to be duplicated by left-handed and right-hand helicity liquid crystal.
22. the blooming of a sandwich construction is characterized in that, said blooming comprises most polymeric membranes as claimed in claim 2, and said polymeric membrane is distinctly to be duplicated by left-handed and right-hand helicity liquid crystal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010602456.7A CN102565898B (en) | 2010-12-23 | 2010-12-23 | Polymeric membrane containing no cholesteric liquid crystal, polymeric membrane and reflecting type display module |
Applications Claiming Priority (1)
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| CN105676515A (en) * | 2014-12-03 | 2016-06-15 | 现代自动车株式会社 | Smart glass using guided self-assembled photonic crystal |
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| US20030214690A1 (en) * | 2001-11-26 | 2003-11-20 | Escuti Michael J. | Holographic polymer photonic crystal |
| CN1489706A (en) * | 2001-11-09 | 2004-04-14 | 大日本印刷株式会社 | Optical element |
| US7077984B1 (en) * | 1996-07-12 | 2006-07-18 | Science Applications International Corporation | Electrically switchable polymer-dispersed liquid crystal materials |
| CN101187728A (en) * | 2007-12-21 | 2008-05-28 | 中国科学院化学研究所 | Preparation method of total visible light condenser containing curve surface photon crystal film structure |
| CN101369029A (en) * | 2008-07-30 | 2009-02-18 | 中国科学院化学研究所 | Method for producing photon crystal film for improving mechanical strength and solvent resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7077984B1 (en) * | 1996-07-12 | 2006-07-18 | Science Applications International Corporation | Electrically switchable polymer-dispersed liquid crystal materials |
| CN1489706A (en) * | 2001-11-09 | 2004-04-14 | 大日本印刷株式会社 | Optical element |
| US20030214690A1 (en) * | 2001-11-26 | 2003-11-20 | Escuti Michael J. | Holographic polymer photonic crystal |
| CN101187728A (en) * | 2007-12-21 | 2008-05-28 | 中国科学院化学研究所 | Preparation method of total visible light condenser containing curve surface photon crystal film structure |
| CN101369029A (en) * | 2008-07-30 | 2009-02-18 | 中国科学院化学研究所 | Method for producing photon crystal film for improving mechanical strength and solvent resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105676515A (en) * | 2014-12-03 | 2016-06-15 | 现代自动车株式会社 | Smart glass using guided self-assembled photonic crystal |
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