CN100472297C - Optical element manufacturing method - Google Patents
Optical element manufacturing method Download PDFInfo
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- CN100472297C CN100472297C CNB2006100594787A CN200610059478A CN100472297C CN 100472297 C CN100472297 C CN 100472297C CN B2006100594787 A CNB2006100594787 A CN B2006100594787A CN 200610059478 A CN200610059478 A CN 200610059478A CN 100472297 C CN100472297 C CN 100472297C
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Abstract
The invention provides a method for manufacturing an optical element by rubbing a long-sized substrate film after cleaning and leveling rubbing cloth of a rubbing roll. Variable air is jetted to the surface of the rubbing roll to remove dust such as rubbing waste sticking on the rubbing cloth of the rubbing roll and also level rubbing nap. In this manufacturing method, an optical element suitable to a liquid crystal display device etc., and free of a defect is obtained.
Description
Technical field
The present invention relates to a kind of manufacture method of optical element, it comprises the operation of the directed substrate film surface of long size being carried out friction treatment.Be particularly related to a kind of manufacture method that friction roller mantle friction cloth is adjusted the optical element of operation that comprises.
Background technology
In the manufacturing of liquid crystal indicator etc., use the substrate film that the unidirectional friction treatment in plastic sheeting surface is crossed usually.Substrate film is widely used in the directional process (for example, with reference to patent documentation 1) of liquid crystal molecule in the liquid crystal cell.In addition, to directly or with this liquid crystal liquid crystal property macromolecule layer be transferred on the light-transmitting substrate film at the material that is formed with the liquid crystal liquid crystal property macromolecule layer on the substrate film, the method of making optical elements such as visual angle modified plate, polarizer, colorimetric compensation plate is by known (for example, with reference to patent documentation 2).The material film that high cleaning is used in such plastic sheeting processing carries out in the cleaning shop, yet produce cutting swarf owing to the surface is cut in friction process, also produces the fibre fluff of friction cloth.These cutting swarfs and fine hair are attached on the film.These cutting swarfs and fine hair are the fine particles of tens of μ m～hundreds of μ m, when having adhered to the film surface coated with liquid crystal macromolecule of these materials, the coating spot of several mm will occur.In addition, before the film that has adhered to these particles is sent to next procedure, in case be rolled into film rolling securely, because volume tension force, the particle between thin layer will make deformation of thin membrane, and its size reaches several mm, and when film rolling was launched film, defective all appearred in each volume cycle.These defectives descend the qualification rate of product.In addition, when long-time continuous was carried out friction treatment, the cloth hair shape that then rubs confusion reigned can not obtain the orientation of homogeneous, and this place just becomes optic defective.
Therefore, carry out the certain hour friction treatment after, change friction roller.When carrying out friction treatment in order on glass substrate, to form oriented film, substrate for 1 or some carries out can changing after the friction treatment, yet, carry out the method for friction treatment for moving long size film, when changing friction roller, must stop the mobile of long size film and restart the waste of generation time and film.In addition, the frequent replacing is uneconomic.Up to now, cleaning method as friction roller once proposed a kind of device, it is provided with friction roller hair flattening device and attracts Soft flocks devices (patent documentation 3), and a kind of method, friction cloth blowing out pressurised air is passed through in its inside from friction roller, fiber is erected, and remove attached to the buffing on the fiber (with reference to patent documentation 4), etc.
[patent documentation 1] spy opens flat 6-110059 communique
[patent documentation 2] spy opens flat 7-113993 communique
[patent documentation 3] spy opens flat 5-34694 communique (claim, accompanying drawing)
[patent documentation 4] spy opens 2002-196335 communique (claim, accompanying drawing)
Summary of the invention
Yet, in the method for patent documentation 3, because the fiber (friction hair) of friction cloth is contacted with the hair flattening device, thus influential to high-quality green tea unavoidably, also have in the method for patent documentation 4, must be to friction roller self processing, this is uneconomic.The present invention is a purpose to address these problems, and a kind of manufacture method of optical element is provided, and it provides in a kind of friction treatment in the directed substrate film that long size moves, by cleaning the optical element that the friction roller manufacturing has superior optical characteristics.
The 1st aspect of the present invention relates to a kind of manufacture method of optical element, it comprises the operation of the directed substrate film surface of long size being carried out friction treatment, it is characterized in that, on the friction roller surface of carrying out this friction treatment, spray the air that can change, the adjustment of the cloth that rubs with air jet system.
The 2nd aspect of the present invention relates in the manufacture method of described optical element aspect the present invention the 1st, it is characterized in that, by air jet system, relies on rotation or vibration that the above-mentioned air that changes takes place.
The 3rd aspect of the present invention relates to a kind of manufacture method as the described optical element in the present invention the 1st aspect, it is characterized in that, above-mentioned variable air has added ultrasonic vibration.
The 4th aspect of the present invention relates to the manufacture method as the described optical element of either side among the present invention the 1st～3, it is characterized in that the injection direction of above-mentioned variable air is the central axis direction of relative friction roller and becomes the directions of 45 degree with interior angle with this central shaft.
The 5th aspect of the present invention relates to the manufacture method as the described optical element of either side among the present invention the 1st～4, it is characterized in that, and be 0.2～0.7Mpa to the supply pressure of aforementioned variable air-air jetting system.
The 6th aspect of the present invention relates to the manufacture method as the described optical element in the present invention the 1st aspect, it is characterized in that, the above-mentioned change used ionized air in the air.
The 7th aspect of the present invention relates to the method for adjustment of this friction roller mantle friction cloth, it is characterized in that, utilizes air jet system, to the friction roller surface of the directed substrate film surface of long size being carried out friction treatment, the air that injection can change.
The of the present invention the 8th relates to the method for adjustment as the described friction cloth in the present invention the 7th aspect, it is characterized in that, by the air jet tools, relies on rotation or vibration that the above-mentioned air that changes takes place.
The of the present invention the 9th relates to the method for adjustment as the described friction cloth in the present invention the 7th aspect, it is characterized in that, the above-mentioned air that changes has added ultrasonic vibration.
The of the present invention the 10th relates to the method for adjustment as friction cloth as described in the either side in the present invention the 7th～9th, it is characterized in that, the injection direction of above-mentioned variable air is the central axis direction of friction roller and becomes the directions of 45 degree with interior angle with this central shaft.
The of the present invention the 11st relates to the method for adjustment as the present invention the 7th～described friction cloth of the 10th either side, it is characterized in that, the aforementioned supply pressure that changes the air-air jetting system and provide is 0.2～0.7Mpa.
The of the present invention the 12nd relates to as the present invention the 7th aspect described friction cloth method of adjustment, it is characterized in that, the above-mentioned air that changes is used ionized air.
When using method of the present invention, can remove attached to dust such as cutting swarf on the friction cloth and fine hair, also can put the hair shape of friction cloth in order, the adjustment of cloth rubs, so reduce the replacing frequency of friction cloth, grow the friction treatment of size film substrate, can obtain the optical element of free of optical defects.In addition, in friction treatment, can be by the online adjustment of carrying out such as the smooth such friction cloth of the cleaning of friction cloth and/or friction cloth hair.With the directed substrate film that method of the present invention obtains, it does not have dust to adhere to, orientation is even, do not have directed defective, can obtain the optical element of high-quality.
Description of drawings
Fig. 1 is the mode chart of the long size substrate orientation of expression film Frotteurism.
Fig. 2 is the mode chart of an example of the expression device of implementing the inventive method.
Fig. 3 is another routine mode chart that the device of the inventive method is implemented in expression.
Fig. 4 is another routine mode chart that the device of the inventive method is implemented in expression.
Embodiment
Fig. 1 has schematically shown the situation when moving long size substrate film rubs on one side on one side.1 is long size substrate film among the figure, the 2nd, and friction roller.Film 1 can use various materials, for example the coated with liquid crystal macromolecule as orientation with macromolecule membrane, other used for optical elements film, thin slice or the tape of substrate with base film etc.Optimal is directed substrate film.Directed substrate can use any in the multi-ply construction of material, macromolecular material and other material (for example, metal formings such as copper, stainless steel, the steel) formation that is made of macromolecular material with long size film.Also directed substrate can be made the metal forming of copper, stainless steel, steel etc. with film self.
The preferred macromolecular material of this material, thermoset resin or thermoplastic resin can use.For example, thermoset resins such as polyimide resin, epoxy resin, phenolic resin; Polyamide such as nylon; Polyimide; Polyetherketone; Polyetheretherketone (PEEK); Polyketone; Polyethersulfone; Poly phenylene sulfoether; Polyphenylene oxide; Polyester such as polyethylene terephthalate, PEN, polybutylene terephthalate; Polyacetal; Polycarbonate; Poly-(methyl) methyl acrylate; Cellulosic resins such as triacetyl cellulose; Thermoplastic resins such as polyvinyl alcohol (PVA).When oriented film forms the liquid crystal liquid crystal property polymeric membrane on directed substrate, need at this moment will consider thermotolerance, then the material that more preferably constitutes under the situation of heating by thermoplastic resins such as polyethylene terephthalate, poly phenylene sulfoether, PEEK, polyvinyl alcohol (PVA).The effect that these need not be worried and subdue or reduce friction and handle owing to heating.
Above-mentioned film can use its mantle friction as directed substrate film, also can form oriented film at film surface, and this oriented film friction is used as directed substrate.The material that forms oriented film at film surface can use various materials, preferred macromolecular compound.For example, polyimide, alkyl chain modification quasi-polyethylene alcohol, polyvinyl butyral, polymethylmethacrylate etc.In addition, the oriented film with inorganics has the oblique vapor-deposited films of inorganics such as the oblique vapor-deposited film of SiO.Behind the polyimide occasion preferred coated polyprotonic acid, make it to solidify with 100 ℃ to 300 ℃ heating.
The directed substrate film of long size or its matrix film can be used well-known suitable method manufacturing in the past.Long size film by thermoplastic resin constitutes can easily obtain with common manufacturing process such as T mould extrusion.The thickness of long size film can suitably be selected, and for example, can adopt the scope of 10 μ m～10mm.Width is also suitable, selects the scope of 1～500cm usually.
In addition, thermoplastic resin membrane's occasion at the effective scope that does not hinder friction treatment, can obtain the film that is suitably stretched at 1 direction of principal axis (preferred MD direction) or 2 direction of principal axis with known method.
Promptly the rub cleaning and the hair of cloth of the adjustment of friction roller mantle friction cloth is smooth, finishes the inspection of product or the monitoring in the friction treatment operation according to friction, when the detection limit of the defective of product or particulate surpasses setting or surpass predetermined process and carry out during the time.If exemplify the method for on-line monitoring, in Fig. 1,, monitor the particulates such as dust that take place by friction treatment according to 5 particle detection of representing.As the pick-up unit of particulate, can use corpuscular counter, image processing apparatus (CCD camera etc.) etc.
The adjustment of so-called friction cloth is meant the cleaning and the smooth processing of hair that comprise the cloth that rubs.Spraying the air that can change on the friction cloth that is adjusted at the friction roller surface of friction cloth carries out.At this moment, the so-called air that can change, the positions, direction, pressure, flow velocity etc. that are meant the airflow that impacts friction roller are the airflows of change, though and be stable airflow, the airflow that relies on manually or can make automatically the position, direction etc. of the airflow that impacts friction roller to change.In the air of earthquake, comprised the airflow of additional pulsating wave or ultrasonic vibration.
, can not remove only with injection airs such as pressure fan or air knives on the friction roller surface, can not correct a mao shape attached to dust near friction measuring fiber hair root portion.Its reason is thought, produces the slow boundary layer of air velocity on the surface of object being treated, has hindered and has utilized air-flow to peel off dust, and air-flow is invaded the difficulty that becomes between the fiber hair.In contrast, during with variable air, destroy such boundary layer or hinder it generating, the hair shape with air-flow removal dust and rectification fiber hair is considered to effectively to carry out.The promptly so-called change that can change air is so long as it is just passable to reach the degree of destroying such boundary layer or hindering its generation.
Injection can change an example of the device of air, following method is for example arranged: the direction of the air that will spray from the air injection nozzle that is arranged on the flexible pipe top that links to each other with air source, with the airflow change that manually or automatically makes it rotation or wave, make to bump against friction cloth.Air injection nozzle is arranged in the air ejection cylinder, can manually make the rotation of this air ejection cylinder or waves.Perhaps, can use: in the air ejection cylinder, be equipped with the flexible pipe that contains the air injection nozzle freedom of movement on the top as lower device, dependence is from the thrust of the air of this nozzle ejection, in this spraying canister, this nozzle is with high speed rotating or vacillate now to the left, now to the right, and the air of change is sprayed from air ejection cylinder.
In addition, also can use the device of having given the air of ultrasonic vibration from the ejection of exhaust otch.Ultrasonic vibration can be used ultrasonic generator, and the air pocket when perhaps passing through from nozzle ejection forced air generates.Also have, in this device, have plenty of the device that has made up the attraction air, and have plenty of and used ionized air.
Fig. 2, Fig. 3 have schematically shown the situation of carrying out the friction roller cleaning with off-line mode.The friction roller 2 that should clean from the production line takes off, and puts in the cleaning chamber 6.7 is the devices that can change air in injection orifice with the form ejection of wiggly form of air injection nozzle or rotation among the figure.When friction cloth adjustment is handled, friction roller and the device that ejection can change air are relatively moved, make it can be to whole injection air of friction roller.Not expression among the figure, but preferably friction roller is pivoted with suitable rotating driving device.In Fig. 3, represented a kind of like this device, with the parallel guide rail 10 of friction roll shaft on move the device of the variable air of ejection, can clean at the whole width of friction roller and hair smooth.Fig. 4 is the device with the variable air of ejection, the online cleaning of friction roller and the mode chart of mao smooth situation of carrying out.11 is the lids that cover friction cloth adjusting gear among the figure.In Fig. 4, and same parts, the device of Fig. 1～3 same reference numeral.In Fig. 2 and Fig. 4,8 expression filtrator fan units, 9 expression exhaust pressure fans.Arrow among the figure is represented the flow direction of air.Using from the occasion of the device of exhaust otch ejection ultrasonic vibration air, its section is identical with Fig. 2 and Fig. 4.In such device,, then do not need image pattern 3 to move with guide rail like that if the width of the width of exhaust otch and friction roller is identical or surpass.Not expression in these figure, but can suction devices such as attracting nozzle or attraction otch be set near friction roller, suitably attract to remove the dust of peeling off from friction roller.The various known suction devices of this occasion can use as the attraction means.
Treatment conditions such as the injection direction of variable air, expulsion pressure, flow velocity, flow, as long as it is just passable in the degree in friction roller surface formation boundary layer of air or destruction boundary layer to reach obstruction, superfluous power is added to friction Mao Shanghui damage friction hair, can cause producing new defective.Preferred injection conditions is as follows.
The injection direction of variable air, according to the friction cant to relation select suitable angle.The central axis direction of preferred friction roller and relative 45 ° of directions of this central shaft with interior angle.More preferably 30 ° with interior angle.Preferred 0.2～the 0.7Mpa of the pressure of air, more preferably 0.45～0.65Mpa.Preferred 10～1000 liters/minute of flow, flow velocity is preferred 10～20,000m/ second.
Spray the air jetting nozzle of the above-mentioned device that changes air and the preferred discontiguous degree of high-quality green tea of friction roller, its apart from preference as 1～100mm about.
Carry out the film of friction treatment with above operation, further as required, through removing electrician's preface, the clean operation that appropriate solvent such as dedusting operation and water, alcohols, ethers and fluorinated hydrocarbons are carried out, drying processes etc. obtain directed substrate film, are processed to optical element.
The optical element that obtains can list: all kinds of optical thin films that are provided with on various displays such as LCD, plasma display panel, EL display and substrate film etc. as processing the directed substrate that obtains like this.For example have more specifically: the exhibiting optical function film (optical element) that various liquid crystal liquid crystal property macromolecular materials that can be by coating backbone chain type or side chain type etc. obtain, effectively Polarizer, colored Polarizer, polarizer, colorimetric compensation film, visual angle improved thin film, the brightness of the liquid crystal characteristic of the liquid crystal liquid crystal property macromolecular material that uses of performance improve film, antireflective film, optical activity film, decorating film etc.In addition, in the exhibiting optical function film (optical element) that obtains, for example also can implement additional new function such as holographic processing.Need to prove that liquid crystal liquid crystal property macromolecular material described herein comprises with the low molecule of the liquid crystal liquid crystal property that contains reactive functional group, utilizes light and/or heat to carry out polymerization and crosslinked, the material of macromolecule quantification as a result.Further in the present invention, for example, at film friction surface coated with liquid crystal macromolecular material, become the occasion of mesomorphic state, this material makes its immobilization according to the direction orientation of friction with its sclerosis or curing, can obtain aforesaid various exhibiting optical function films (optical element).
The method of said fixingization be listed as if any: at mesomorphic state, the desired directed state chilling from forming becomes the vitrifacation state and immobilized method; After making low molecular material of the liquid crystal liquid crystal property that contains reactive functional group or liquid crystal liquid crystal property macromolecular material orientation, make above-mentioned functional group's reaction (solidify, crosslinked etc.) and immobilized method etc.
Above-mentioned reactive functional group for example has: vinyl, (methyl) acryloyl group, ethyleneoxy, epoxy radicals, oxetanyl, carboxyl, hydroxyl, amino, isocyanic acid alkali, anhydride group etc., react with being suitable for each basic method.
In addition, occasion at the high thermotropic liquid crystal macromolecule of the temperature that use to show liquid crystal liquid crystal property etc., can the high substrate film of friction treatment thermotolerance, on this film, form the liquid crystal layer of the directed state of immobilization, as required with it from this strippable substrate, be transferred on other light-transmitting substrate, make optical element.
As above-mentioned liquid crystal liquid crystal property macromolecular material, according to being the purposes and the manufacture method of purpose with the optical element, no matter hang down molecule, macromolecule, can be selected from very wide scope, but preferably use the liquid crystal liquid crystal property polymer substance as this material.Moreover the molecular shape of liquid crystal molecule is no matter be bar-shaped or discoid.For example, also can use the discotic mesogenic material that presents the plate-like nematic crystal.
Also have, the liquid crystal phase as above-mentioned liquid crystal liquid crystal property macromolecular material presents for example has: nematic phase, twisted nematic phase, cholesterol type phase, mixing nematic phase, mixing twisted nematic phase, plate-like nematic phase, stratose equate.
As above-mentioned liquid crystal liquid crystal property polymer substance, can use the potpourri of various backbone chain type liquid crystal materials, side chain type liquid crystal material or these materials.The backbone chain type liquid crystal material for example has: liquid crystal liquid crystal property polymer substance such as polyesters, polyamide-based, polycarbonate-based, polyimide, polyurethanes, polybenzimidazoles class, polybenzoxazoles class, polybenzothiozole class, poly methylene imine class, polyesteramide class, polyestercarbonate class, polyester-imide class, or the potpourri of these materials etc.In addition, the side chain type liquid crystal material for example has: polyacrylate, polymethacrylate, polyethylene kind, polysiloxane-based, polyethers, poly-malonate class, polyesters etc., the liquid crystal liquid crystal property polymer substance that mesogenic group (メ ソ ゲ Application base) arranged as the side chain bonding in the material of the skeletal chain with straight chain shape or ring-shaped structure, or these potpourri.Also have, backbone chain type liquid crystal material, side chain type liquid crystal material also can contain above-mentioned reactive functional group.In these materials, from synthetic and directed considerations such as easness, the polyesters of preferred backbone chain type liquid crystal material.
The liquid crystal liquid crystal property lower-molecular substance for example has: at the end of saturated benzene carboxylic acid, unsaturated benzene carboxylic acid, biphenyl carboxylic acids class, aromatic series oxycarboxylic acid class, schiff's base type class, dimethyleneimine compounds, azo-compound class, azoxy compound class, thiacyclohexane ester compounds class, sterol compounds class etc., import the compound of the demonstration liquid crystal liquid crystal property of above-mentioned reactive functional group; And in the above-claimed cpd class, show the composition that added cross-linked compound in the compound of liquid crystal liquid crystal property etc.In addition, disc liquid-crystal compounds for example has: triphenylene basic ring class, three polyindene classes etc.
Further, in liquid crystal material, also can enough cause the functional group of reaction of polymerization and cross-linking reaction etc. or all cpds at position, cooperate in the scope that does not hinder liquid crystal liquid crystal property to manifest with containing using light and/or heat energy.Can cause the functional group of polymerization and cross-linking reaction, above-mentioned various reactive functional group etc. are for example arranged.
With the method for above-mentioned liquid crystal liquid crystal property macromolecular material to directed substrate film expansion, for example have: with all cpds that contains above-mentioned liquid crystal material and add as required, the composition of the various light triggers of Tian Jiaing, sensitizer, adjuvant as required is coated in method on the directed substrate film at the state of dissolving; And the solution of said composition is coated in method on the directed substrate film etc.Like this, filming on the directed substrate film will be coated in, by dry, the thermal treatment (liquid crystal aligning) carried out as required, carry out the method for above-mentioned immobilization orientation such as rayed and/or heat treated (polymerization, crosslinked) again, the immobilization orientation can form above-mentioned optical element according to this.With the condition of rayed immobilization orientation, the different variation of rerum natura because of used liquid crystal material and composition cannot treat different things as the same, yet just enough under the photocuring condition of bonding agent described later usually.Need to prove that the temperature during with the rayed immobilization can be that mesomorphic state also can be the following temperature of glass transition temperature, the selected condition that is more suitable for gets final product.Heat fixationization also with the rayed immobilization same with the material interdependence of using, below the above isotropic phase temperature of the glass transition point of composition, carry out usually, its time can suitably be selected.
Above-mentioned solution preparation solvent for use, so long as can lysate eutectic substance and composition, and can distill the solvent of removing under proper condition, just be not particularly limited.General preferred use: ketones such as acetone, methyl ethyl ketone, different Fu Er ketone; Butoxyethyl group alcohol, own oxygen base ethyl alcohol, methoxyl-ether alcohol classes such as 2-propyl alcohol; Gylcol ether such as ethylene glycol dimethyl ether, diethylene glycol dimethyl ether; Ester classes such as ethyl acetate, acetic acid methoxyl propyl ester, ethyl lactate; Phenols such as phenol, chlorophenol; N, amide-types such as dinethylformamide, N,N-dimethylacetamide, N-Methyl pyrrolidone; Halogenated hydrocarbons such as chloroform, tetrachloroethane, dichloro-benzenes etc. or these mixing class.In addition, film uniformly, also can in solution, add interfacial agent, defoamer, levelling agent etc. in order on directed substrate, to form.Moreover, to be colored as purpose, also can in the scope that does not hinder liquid crystal liquid crystal property to manifest, add dichroic dye and common dyestuff and pigment.
For coating method,, then do not limit especially and can use known method if guarantee to film inhomogeneity method.For example have: rolling method, mouthful pattern rubbing method, dip coating method, curtain formula coating, spin coating method etc.After the coating, can enter with the operation of methods such as well heater and blowing warm air with removal of solvents (drying).Thickness in the drying regime of filming is 0.1 μ m～50 μ m, preferred 0.2 μ m～20 μ m.Outside this scope, because the optical property of the liquid crystal material layer that obtains is not enough, the orientation of liquid crystal material is also insufficient etc., so do not select for use.
Then, if desired then after utilizing thermal treatment etc. to form liquid crystal aligning, carry out directed immobilization.Thermal treatment is to manifest temperature range by being heated to liquid crystal phase, and self capacity of orientation that utilizes that liquid crystal material had originally makes liquid crystal aligning.As heat treated condition, owing to cause the most suitable condition different with boundary value because of the liquid crystal dynamic temperature (inversion temperature) of used liquid crystal material is different, thus cannot treat different things as the same, normally 10～300 ℃, preferred 30～250 ℃ scope.Excessive low temperature, the worry that has liquid crystal aligning fully not carry out, same, high temperature has liquid crystal material to decompose the worry that the para-directing group plate produces baneful influence.Have again,, selected preferred 10 seconds～30 minutes scope usually for use 3 seconds～60 minutes for heat treatment time.Heat treatment time than 3 seconds in short-term, the worry that has liquid crystal aligning fully not carry out surpasses 60 timesharing at heat treatment time because productivity extremely worsens, any situation is not selected for use.After liquid crystal material was finished liquid crystal aligning by thermal treatment, under this state, with the liquid crystal liquid crystal property macromolecular material on the directed substrate film, employing was suitable for carrying out immobilization as the method for the liquid crystal material of this material use.
More than, the directional crystal material layer with method of the present invention obtains if directed liquid crystal material layer can be independent, then can use the liquid crystal material layer separately, otherwise directed substrate can be used as supporter.With the occasion of directed substrate as supporter, be unsuitable for the final use of liquid crystal material layer sometimes with directed substrate, this situation can be transferred on other suitable substrate directed strippable substrate is removed.The substrate of using as transfer printing is at occasion, preferably clear and optical isotropic glass plate, quartz plate or the plastic film or the thin slice of the infiltration type of transmitted light.Such plastics, for example: polymethylmethacrylate, polystyrene, polycarbonate, polyethersulfone, amorphous poly alkene, cyclopentadiene with and (hydrogenation) alicyclic compound base polymer of derivant etc., polyarylate, triacetyl cellulose etc.These films or thin slice can be implemented stretch processing.Its thickness is 0.1 μ m～10mm, preferred 1 μ m～2mm scope.
Moreover the substrate that transfer printing is used also can use Polarizer.Polarizer its single face and/or two-sided can matcoveredn, the binding face of Polarizer is no matter have or not protective seam can be any, the duplexer that obtains is exactly so-called elliptical polarization plate.Further only the directional crystal material layer with do not have the Polarizer of protective seam directly to fit, also can become the extremely elliptical polarization plate of filming.
Transfer printing is that above-mentioned substrate for transfering and liquid crystal material layer are fitted by bonding agent, can implement to solidify to this bonding agent according to demand and handle, and peels off directed substrate.
The stripping means of directed substrate can for example suitably adopt: stick adhesive tape in the bight of directed substrate and substrate for transfering and the people is the method for peeling off; With the method for mechanical strippings such as cylinder, be impregnated into relatively the method for mechanical stripping behind the lean solvent of whole constituent materials; The method that in lean solvent, adopts ultrasound wave to peel off; Utilize the difference of the thermal expansivity of directed substrate, substrate for transfering and directed liquid crystal material layer, give method that temperature variation makes it to peel off etc.
The coating method of above-mentioned bonding agent can be selected suitable method for use, operable bonding agent does not have special restriction yet, preferably use optically isotropic material, for example, acrylic compounds, polyurethanes, ethene-vinyl acetate co-polymer class, various rubber-like, reactive material etc.Reactive material for example has: thermohardening type, light-cured type or electron ray curing type etc., preferably monomer and the oligomer with the propylene class is the material of principal ingredient, can add various Photoepolymerizationinitiater initiaters, sensitizer, viscosity modifier etc. as required.The curing of bonding agent is owing to selecting for use photocuring method or electron ray curing method to be cured processing under the low temperature below the glass transition point of liquid crystal material layer, so preferred the use.
The occasion of photocuring method can be used known curing means, for example, and Cooper-Hewitt lamp, high-pressure mercury-vapor lamp, extra-high-pressure mercury vapour lamp, metal halide lamp, xenon lamp etc.Exposure cannot treat different things as the same, but selects 50～2000mJ/cm for use usually because of the kind of used reactive bonding agent is different in addition
2, preferred 100～1000mJ/cm
2Moreover, the occasion of electron ray curing method, suitably selected according to the power that sees through and the curing power of electron ray, cannot treat different things as the same, but can select 30～1000KV for use at accelerating potential usually, irradiation under the condition of preferred 50～500KV and solidifying.
The viscosity of bonding agent selects 1～20 usually for use, 000MPaS, preferred 10～10,000MPaS, the thickness of bonding agent cannot treat different things as the same because of purposes is different with its operability, but the thickness of coating back bonding agent is selected 0.1～200 μ m for use, preferred 0.5～50 μ m usually.Viscosity then is difficult to the applied thickness that obtains expecting outside above-mentioned scope, operability also worsens, and is therefore not preferred.Also have, when viscosity does not meet above-mentioned scope, preferably suitably adjust viscosity, make it reach the range of viscosities of expectation with solvent and low viscosity monomer etc.
Moreover this this bonding agent is in the scope of not damaging its characteristic, and can add with the control optical characteristics is the various particulates etc. of purpose.Above-mentioned particulate for example has: the particulate different with the compound refractive index that constitutes bonding agent, do not lose the transparency and improve charging preventive property electrically conductive microparticle, improve the particulate of wearing quality etc., more specifically can cooperate: trickle silica, trickle alumina, ITO (indium tin oxide) particulate, silver-colored particulate, various synthetic resin particulates etc.Further, in the scope of not damaging effect of the present invention, can cooperate various adjuvants such as antioxidant, ultraviolet light absorber.
For liquid crystal liquid crystal property macromolecule of the present invention, can use aforesaid liquid crystal liquid crystal property macromolecular material separately, in addition, also the liquid crystal liquid crystal property macromolecule mixture more than 2 kinds or 3 kinds can be used as this material.Further, in the scope of not damaging effect of the present invention, various liquid crystal liquid crystal property macromolecules such as optically active liquid crystal liquid crystal property macromolecule, liquid crystal liquid crystal property ethene polymers, liquid crystal liquid crystal property polysiloxane, liquid crystal liquid crystal property epoxy resin or non-liquid crystal liquid crystal property macromolecule suitably can be mixed and use.
Embodiment
Polyetheretherketone (PEEK) film for thick 60 μ m, wide 650mm carries out friction treatment with device shown in Figure 1.The travelling speed of film is the 30m/ branch, and the reeled friction cloth of nylon system of friction roller, external diameter is 150mm, widely is 500mm, with 90 ° of inclinations of carriage direction of the relative film of turning axle of friction roller, with rotation round speed 500m/ branch, carries out friction treatment.Friction treatment is taken off friction roller after carrying out 60 minutes, with the rub adjustment of cloth of Fig. 2 and device shown in Figure 3.Device as ejection change air uses big great パ ガ Application PU-200 (trade name) of Co., Ltd. and the air source of 0.4MPa of grinding, distance with injection orifice and friction roller surface is 40mm, the spin friction roller, Yi Bian make the jetting system fine motion reciprocal, Yi Bian to the friction mandrel injection air.The spacing of setting fine motion is identical with the left and right sides amplitude of the air that sprays from air injection nozzle, and is jet on the whole width of friction roller.
Friction roller with such friction cloth is adjusted restarts friction process.Removed electricity, dedusting, clean and each dry operation, on winding up roller by the film of friction treatment process.
Behind the cleaning friction roller, restart friction, will film (embodiment) that 0～15-min period obtains and and after embodiment carries out 60 minutes friction treatment equally, do not carry out the film (comparative example) that friction treatment that the cleaning of friction roller continued 0～15 minute obtains, as directed substrate film, on the friction treatment face of this film, with roll coater coated with liquid crystal polymer substance solution 300mm width.Dry back makes liquid crystal liquid crystal property macromolecule orientation 200 ℃ of heat treated 15 minutes, next is cooled to room temperature, immobilization liquid crystal structure (directional structure of twisted nematic).
For the long size liquid crystal liquid crystal property macromolecule layer that obtains, observing has zero defect and number of defects, and with not observing by fricative defective of embodiment film, and number of defects on average is 5/m
2, its mean size is 50 μ m.The film of corresponding the opposing party's comparative example has been seen defective, and number of defects on average is 10/m
2, its mean size is 80 μ m.
The liquid crystal liquid crystal property Polymer Solution that is used to estimate is by the following stated manufacturing.
To contain the liquid crystal liquid crystal property polymer substance (logarithm viscosity=0.22dl/g, Tg=61 ℃) of formula (1) and (R)-3-methyl hexane-1 of formula (2), the optically active liquid crystal polymer substance of 6-diol units (logarithm viscosity=0.17dl/g) synthetic.
The synthetic of these macromolecular materials is in the o-dichlorobenzene solvent, and under the coexistence of triethylamine, sour chloride by making corresponding dicarboxylic acid units and diol compound react and carry out.
Potpourri with the liquid crystal liquid crystal property polymer substance 1.9g of the liquid crystal liquid crystal property polymer substance 18.1g of the formula (1) that obtains and formula (2) is dissolved in N-methyl pyrrolidone of 80g, is modulated into liquid crystal liquid crystal property polymer substance solution.
[changing 1]
In above-mentioned chemical formula, the * mark is represented optical activity carbon
In addition, above-mentioned analytic approach and evaluation are undertaken by as follows.
(1) the high molecular logarithm viscosimetric analysis of liquid crystal liquid crystal property
Use dark type viscometer, in phenol/tetrachloroethane (60/40 weight ratio) mixed solvent, measure down at 30 ℃.
(2) observation of directed inequality and defect inspection
Directed uneven observation is carried out with Olympus Optical (strain) system BH2 polarizing microscope.
(3) the high molecular composition decision of liquid crystal liquid crystal property
Liquid crystalline polyester is dissolved in chloroformic solution of deuteration, with 400MHz's
1H-NMR (NEC system JNM-GX400) measures, and determines to form.
According to the present invention, can obtain the few directed substrate film of defective, be suitable for making high-precision optical element.In addition, cleaning method of the present invention is because of only using air, so be suitable for implementing under debatable facility of environmental pollution and environment.
Claims (10)
1. the manufacture method of an optical element, it comprises the operation of the directed substrate film surface of long size being carried out friction treatment, it is characterized in that, on the friction roller surface of carrying out friction treatment, spray variable air with air jet system, the rub adjustment of cloth, the supply pressure of described variable air-air jetting system is 0.2～0.7Mpa, and the distance between the high-quality green tea of the air jetting nozzle of ejection air and friction roller is 1～100mm.
2. as the manufacture method of the optical element of claim 1 record, it is characterized in that,, rely on rotation or vibration that the described air that changes takes place by air jet system.
3. as the manufacture method of the optical element of claim 1 record, it is characterized in that the described air that changes has added ultrasonic vibration.
4. as the manufacture method of the optical element of each record in the claim 1～3, it is characterized in that, the injection direction of described variable air be the central axis direction of friction roller and relatively this central shaft become the directions of 45 degree with interior angle.
5. as the manufacture method of the optical element of claim 1 record, it is characterized in that described the change used ionized air in the air.
6. the method for adjustment of the friction cloth on a friction roller surface, it is characterized in that, on the friction roller surface of the directed substrate film surface of long size being carried out friction treatment, spray variable air with air jet system, the supply pressure of described variable air-air jetting system is 0.2～0.7Mpa, and the distance between the high-quality green tea of the air jetting nozzle of ejection air and friction roller is 1～100mm.
7. as the method for adjustment of the friction cloth of claim 6 record, it is characterized in that,, rely on rotation or vibration that the described air that changes takes place by air jet system.
8. as the method for adjustment of the friction cloth of claim 6 record, it is characterized in that the described air that changes has added ultrasonic vibration.
9. as the method for adjustment of the friction cloth of each record in the claim 6～8, it is characterized in that, the injection direction of described variable air be the central axis direction of friction roller and relatively this central shaft become the directions of 45 degree with interior angle.
10. as the method for adjustment of the friction cloth of claim 6 record, it is characterized in that described the change used ionized air in the air.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005071221 | 2005-03-14 | ||
| JP2005071221A JP2006251674A (en) | 2005-03-14 | 2005-03-14 | Manufacturing method for optical element |
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| CN1837934A CN1837934A (en) | 2006-09-27 |
| CN100472297C true CN100472297C (en) | 2009-03-25 |
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| CN (1) | CN100472297C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010112968A (en) * | 2008-11-04 | 2010-05-20 | Suzuki Ritsuko | Rubbing treatment apparatus |
| CN102662273A (en) * | 2012-05-11 | 2012-09-12 | 昆山天卓贸易有限公司 | Aligned micro-dust cleaning device |
| CN103913895B (en) * | 2014-04-18 | 2016-08-24 | 京东方科技集团股份有限公司 | Friction cloth aging improvement equipment |
| CN104020611B (en) * | 2014-06-16 | 2017-01-04 | 上海中航光电子有限公司 | A kind of display master blank and display floater |
| CN104950522B (en) * | 2015-06-24 | 2019-04-19 | 合肥鑫晟光电科技有限公司 | Friction matching method and device thereof |
| CN106094352A (en) * | 2016-08-22 | 2016-11-09 | 深圳市华星光电技术有限公司 | A kind of friction matching apparatus |
| CN113176266B (en) * | 2021-04-28 | 2023-12-12 | 伟宸科技（武汉）有限公司 | Automatic nondestructive testing device |
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| CN2077253U (en) * | 1990-06-16 | 1991-05-22 | 沈学智 | Duster |
| JP2002196335A (en) * | 2000-12-27 | 2002-07-12 | Casio Comput Co Ltd | Rubbing method and device therefor |
| JP2002244136A (en) * | 2001-02-21 | 2002-08-28 | Hitachi Ltd | Inspecting method for rubbing cloth and manufacturing method, and manufacturing device for liquid crystal display element |
| CN1588210A (en) * | 2004-07-05 | 2005-03-02 | 友达光电股份有限公司 | Liquid crystal guide rod cleaning device and its cleaning method |
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|---|---|---|---|---|
| JPS61232418A (en) * | 1985-04-09 | 1986-10-16 | Toshiba Corp | Polishing method for liquid crystal display element substrate |
| JP3792384B2 (en) * | 1997-01-08 | 2006-07-05 | セイコーエプソン株式会社 | Substrate rubbing method, liquid crystal electro-optic element manufacturing method, and substrate rubbing apparatus |
| JPH11305233A (en) * | 1998-04-22 | 1999-11-05 | Fuji Photo Film Co Ltd | Manufacture of long and flexible sheet with orientation film and its rubbing device |
| JP2003098258A (en) * | 2001-09-27 | 2003-04-03 | Matsushita Electric Ind Co Ltd | Gate device |
-
2005
- 2005-03-14 JP JP2005071221A patent/JP2006251674A/en active Pending
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- 2006-03-14 CN CNB2006100594787A patent/CN100472297C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077253U (en) * | 1990-06-16 | 1991-05-22 | 沈学智 | Duster |
| JP2002196335A (en) * | 2000-12-27 | 2002-07-12 | Casio Comput Co Ltd | Rubbing method and device therefor |
| JP2002244136A (en) * | 2001-02-21 | 2002-08-28 | Hitachi Ltd | Inspecting method for rubbing cloth and manufacturing method, and manufacturing device for liquid crystal display element |
| CN1588210A (en) * | 2004-07-05 | 2005-03-02 | 友达光电股份有限公司 | Liquid crystal guide rod cleaning device and its cleaning method |
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| CN1837934A (en) | 2006-09-27 |
| JP2006251674A (en) | 2006-09-21 |
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