CN1501145A - Friction method - Google Patents
Friction method Download PDFInfo
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- CN1501145A CN1501145A CNA200310114974A CN200310114974A CN1501145A CN 1501145 A CN1501145 A CN 1501145A CN A200310114974 A CNA200310114974 A CN A200310114974A CN 200310114974 A CN200310114974 A CN 200310114974A CN 1501145 A CN1501145 A CN 1501145A
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- conveying belt
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Abstract
To provide a method for stably rubbing a long film such as an alignment substrate film without producing alignment unevenness over a long period of time .The film is conveyed with a conveyer belt with a metal surface consisting of a material such as mirror finished copper, steel and copper and rubbing treated on the conveyer belt. In this case, a grade of the metal finish is kept 0.4S or higher to ensure adhesion to the film and tension of the conveyer belt is kept 2-20 kgf/mm<SP>2</SP>to prevent a film surface from loosening.(C)2004,JPO.
Description
Technical field
The present invention relates on the banded film surface of manufacturing usefulness such as optical element, implement continuously the method for friction treatment.
Background technology
When making liquid crystal indicator etc., adopt the substrate film of in one direction film surface having been implemented friction treatment.Substrate film is widely used in the orientation process (for example opening flat 6-110059 communique with reference to the spy) of liquid crystal molecule in the liquid crystal cell.In addition, known to directly on substrate film, forming the liquid crystal liquid crystal property macromolecule layer, perhaps this liquid crystal liquid crystal property macromolecule layer is transferred on the light-transmitting substrate film and the optical element manufacture method (for example opening flat 7-113993 communique) of the plate at the improvement visual angle of implementing, phasic difference plate, colorimetric compensation plate etc. with reference to the spy.When substrate film is implemented friction treatment, generally be when carrying banded film, implement by the backing roll of friction roller and relative configuration with it.
The high molecular direction of orientation of liquid crystal molecule in the end article or liquid crystal liquid crystal property, great majority are on the direction that tilts with respect to the film substrate length direction.In this case, for the productive rate that improves goods and make productivity good, for frictional direction is tilted with respect to the length direction of film, the turning axle angle of friction roller is tilted with respect to the film throughput direction, implement friction treatment (for example opening flat 6-242316 communique) thus with reference to the spy.Fig. 1 shows an example.In Fig. 1, on the platform 11 of carrying banded film 12,, when carrying this band shape film 12, make this friction roller 10 rotations, friction treatment is carried out on the surface of this film 12 with the arbitrarily angled friction roller 10 that disposes obliquely that tilts with respect to this throughput direction.
There are the following problems when oblique friction like this: the film of carrying with the rectangular direction of friction roller turning axle on stressed, on the Width of film, misplace, make the frictional direction heterogeneity to produce wrinkle.For addressing this problem, propose employing film conveying belt and supported friction roller, in handle thin films, implement the method (for example opening flat 8-160429 communique) of friction treatment with reference to the spy.Therefore the conveying belt that uses rubber to make in the method, but because rubber strip can not obtain surperficial surface accuracy, existing film and belt surface can not uniform contact, can not avoid the film dislocation, can not reduce the problem of the uneven phenomenon that rubs fully.
The simple declaration of accompanying drawing
Fig. 1 is the simple planimetric map of rubbing device in the background technology.
Fig. 2 is the simple oblique view of equipment therefor in rubbing method of the present invention.
Summary of the invention
The conveying, the frictional direction that the purpose of this invention is to provide the banded film of a kind of stable maintenance for a long time as the orientation substrate film can form the friction treatment method that certain orientation is orientated on film surface.
The present invention the 1st aspect is a kind of rubbing method, it is characterized by at the conveying belt upper conveyor belt shape film that has through the metal surface of mirror finish, adopts the friction roller that is configured on this conveying belt that this film surface is implemented friction treatment simultaneously.
The present invention the 2nd aspect is a kind of rubbing method, it is characterized by aspect the of the present invention the 1st, and conveying belt is the endless belt of continuous drive.
The present invention the 3rd aspect is a kind of rubbing method, it is characterized by aspect the of the present invention the 1st or the 2nd, and conveying belt is the belt that the above mirror finish of surfaceness of 0.4S is crossed.
The present invention the 4th aspect is a kind of rubbing method, it is characterized by in the 1st～the 3rd either side of the present invention, and conveying belt is with 2～20kg/mm
2(each basal area) fixing tension-stretched.
The present invention the 5th aspect is a kind of rubbing method, it is characterized by aspect the of the present invention the 1st or the 2nd, has the roller combination that film and conveying belt are adjacent in the upstream of friction roller.
The present invention the 6th aspect is a kind of rubbing method, it is characterized by in the 1st～the 3rd either side of the present invention, makes the turning axle of friction roller implement friction treatment with respect to the carrying method of film with being the angle of inclination.
Embodiments of the present invention
Banded film of the present invention is not particularly limited it so long as by its surface being implemented friction treatment or the alignment films that forms being gone up on its surface implement friction treatment, can give the material of this film liquid crystal aligning performance.Orientation substrate is formed by macromolecular material with banded film, also can use the sandwich construction that is made of macromolecular material and other material (for example the metal forming of copper, stainless steel, steel etc. etc.) arbitrarily.Orientation substrate also can be the metal forming of copper, stainless steel, steel etc. with film itself.
Be preferably macromolecular material as this material, can use any in heat reactive resin or the thermoplastic resin.For example can enumerate the heat reactive resin of polyimide, epoxy resin, phenolics etc.; The polyamide of nylon etc.; Polyetherimide; Polyetherketone; Polyetheretherketone (PEEK); Polyketone; Polyethersulfone; The polyhenylene thioether; Polyhenylene oxidation thing; The polyester of poly terephthalic acid vinyl acetate, poly-naphthalene vinyl acetate, poly terephthalic acid butene esters etc.; Polyacetal; Polycarbonate; Poly-(methyl) acrylate; The cellulosic resin of primary cellulose acetate etc.; The thermoplastic resin of polyvinyl alcohol (PVA) etc. etc.Forming on the orientation substrate under the situation that alignment films or liquid crystal liquid crystal property polymeric membrane need heat,, more preferably form by the thermoplastic resin of poly terephthalic acid vinyl acetate, polyhenylene thioether, PEEK, polyvinyl alcohol (PVA) etc. if consider thermotolerance.These materials also can not eliminate or reduce the material of friction treatment effect down for heating.
Can use various materials as the material that constitutes alignment films on the film surface, preferably use macromolecular compound.The for example polyvinyl alcohol (PVA) of Kapton, alkyl chain modification class, polyvinylbutyral resin, polymethylmethacrylate etc.As inorganics, be the inorganics oblique evaporation film of SiO oblique evaporation film etc. in addition.Under the situation for polyimide, behind the coating polyamic acid, make its curing with 100 ℃ to 300 ℃ temperature heating.
Can adopt appropriate method commonly known in the art to make the banded film of orientation substrate or its basement membrane.The banded film that is formed by thermoplastic resin can adopt the manufacturing process of common T pattern extrusion molding etc. to obtain easily.The thickness of banded film can be selected aptly, for example can adopt the scope of 10 μ m～10mm.Suitable width is selected in the scope of 1～500cm usually.
When being thermoplastic resin film in addition, can be in the scope that does not hinder the friction treatment effect, by known method at the suitable film that extends to form of single shaft direction (preferably in the MD direction) or biaxially oriented.
Below describe with reference to the accompanying drawings.Fig. 2 represents to implement a kind of form of apparatus of the present invention.Supply with conveying belt 2 from the film 1 that banded film roller (not shown) is sent through a pair of conveying roller (not shown).Conveying belt has the metal surface through mirror finish.As long as this belt has the metal surface, then need not all to be made of metal, but for improving mirror surface accuracy and consider intensity, when it all is made of metal preferably this belt be ring-type.As metal, can use the various materials of copper, stainless steel, steel etc.Also can implement the surface treatment of hard chrome plating etc.From intensity hardness permanance viewpoint, preferred stainless steel.For guaranteeing and the compactedness of film that the mirror finish degree is preferably 0.4S (JIS B0031
-1982) the surface of surfaceness more than, the surface of the surfaceness of 0.1S more preferably.
In addition, lax according to the present invention for preventing film surface, must make conveying belt not lax.The tension force of therefore preferred conveying belt is 2～20kg/mm
22～12kg/mm more preferably
2The tension force size is difficult to carry beyond this scope the time, even can temporarily carry, also can produce the unequal quality decline problem of orientation, and is therefore not preferred.
Conveying belt 2 is driven by supports drive roller 3 and 4, rotates to the working direction of film 1.In the position that film 1 is offered conveying belt 2, by nip rolls 5 and supports drive roller 3 extruding conveying belt 2 and films 1, the air between conveying belt and the film is got rid of, make the two tight contact.The nip rolls material is not particularly limited, but for film and conveying belt are adjacent to, and on rubbing surface, do not produce scratch, preferably this material is the rubber-like material as nitrile rubber.Mirror finish has been implemented on the surface of conveying belt 2, and tension force is very high, so film 1 is to carry in the mode that is adjacent to conveyor belt surface.
The friction material of on the peripheral surface of friction roller 6, reeling.The material of friction cloth and the kind shape of fiber can suitably be selected according to the material of the film surface of implementing friction treatment.Generally can use the friction cloth of nylon, cotton etc.Make the turning axle of friction roller rotatable between the angle of～inclination rectangular with respect to the film throughput direction.The angle that tilts is preferably for example from 0 ° to 45 °.Friction roller 6 is implemented friction treatment in the direction rotation opposite with the film throughput direction continuously to film surface.Can be according to the film surface material, set the condition and range of friction treatment suitably, normally with 0.5～100m/ branch, preferably the transporting velocity of dividing with 1～30m/ moves film, the rotation number of friction roller, in linear velocity than 1～1000, preferably select in the scope 5～200.Friction pressure is that the degree that friction material and film join is slightly got final product.The high-quality green tea of friction cloth is clamp-oned 100 μ m～5000 μ m, more preferably clamp-on about 100 μ m～2000 μ m.Before and after friction treatment, Destaticizing device, dust arrester etc. can be set suitably.
The orientation substrate film that thus obtained friction treatment is crossed is useful during for various optical thin films that have in the various displays that obtain liquid crystal liquid crystal property display, plasma display, EL display etc. and substrate film etc.More specifically, being is very useful when obtaining by obtainable cholesteric films such as coating fluid crystallinity macromolecule, holographic film, Polarizer, colored Polarizer, phasic difference plate, colorimetric compensation film, the film that improves the visual angle, the film that improves briliancy, antireflective film, optically-active film etc.In addition, in the present invention, coating fluid crystallinity macromolecule and when making it be mesomorphic state on the rubbing surface of film for example, according to frictional direction to the high molecular liquid crystal phase molecular configuration of this liquid crystal liquid crystal property implementation orientation.Make its sclerosis or solidify and fix, can obtain aforesaid various optical thin film.When being the high thermotropic liquid crystal macromolecule of liquid crystal liquid crystal property displays temperature, by the high substrate film of thermotolerance is implemented friction treatment, on this film, form the aligned liquid-crystal layer, from this substrate it is peeled off, be transferred on another light-transmitting substrate, can be made into optical element.As this thermotropic liquid crystal macromolecule, can be smectic liquid crystal, nematic liquid crystal, any liquid crystal of rock nematic liquid crystal (cholesteric crystal), garden discotic mesogenic etc.If these liquid crystal liquid crystal property macromolecules with molten condition or be dissolved in the appropriate solvent and be coated on the substrate film, and are reduced to temperature below the glass temperature, then can keep the molecular configuration state of liquid crystal phase.
As this liquid crystal liquid crystal property macromolecule, can exemplify out the condensation class liquid crystal liquid crystal property macromolecule that forms by compound condensation with carboxyl, alcohol radical, phenylol, amino, sulfenyl etc., with the liquid crystal compounds of two keys etc. with acryloyl group, methacryl, vinyl, allyl etc. be the liquid crystal liquid crystal property ethene polymers that obtains of raw material, by synthetic liquid crystal liquid crystal property polysiloxane such as the liquid-crystal compounds with alkoxysilane group, by synthetic liquid crystal liquid crystal property epoxy resin such as the liquid crystal compounds with epoxy radicals and the high molecular compound of above-mentioned liquid crystal liquid crystal property etc.In above various liquid crystal liquid crystal property macromolecules, from the viewpoint of optical characteristics of gained liquid crystal liquid crystal property macromolecule membrane etc., most preferably condensation class liquid crystal polymer.
As condensation class liquid crystal polymer, can adopt proper method that two common functional monomer's condensations are obtained.As this two functional monomer, be preferably two functional monomers with aromatic series or cyclohexane, can exemplify out two amines of phenylenediamine etc. particularly, quinhydrones, the 2-methylnaphthohydroquinone, resorcinol, catechol, the 4-methyl pyrocatechol, the 4-tert-butyl catechol, 2, the glycols of 3-dihydroxy naphthlene etc., 1,4-phenylene two mercaptan, 1, the dithiols of 2-phenylene two mercaptan etc., salicylic acid, the 3-Para Hydroxy Benzoic Acid, the 4-Para Hydroxy Benzoic Acid, 3-hydroxyl-2-naphthoic acid, 6-hydroxyl-2-naphthoic acid, the hydroxycarboxylic acid of 7-hydroxyl-2-naphthoic acid etc., the amino benzoic acid of 2-, the amino benzoic acid of 3-, the amino acids of the amino benzoic acid of 4-etc., phthalic acid, isophthalic acid, terephthalic acids, 1, the 4-naphthalene dicarboxylic acids, 2, the 6-naphthalene dicarboxylic acids, 2, the 7-naphthalene dicarboxylic acids, 4,4 '-diphenyl dicarboxylic acid, 4,4 '-stilbene dicarboxylic acid, 1, the omega-dicarboxylic acids of 4-cyclohexane dicarboxylic acid etc.Wherein most preferably contain as the hydroxyl composition, with the catechol unit serve as must structural unit condensation class liquid crystal liquid crystal property macromolecule.
When preparation condensation class liquid crystal liquid crystal property macromolecule, in the degree of not damaging liquid crystal liquid crystal property, can in raw materials used monomer, add for example oxalic acid, fumaric acid, succinic acid, glutaric acid, hexane diacid, heptandioic acid, suberic acid, azelaic acid, the aliphatic dicarboxylic acid class of decanedioic acid etc., ethylene glycol, propylene glycol, butylene glycol, pentanediol, hexanediol, heptandiol, ethohexadiol, nonanediol, the aliphatic diol class of decanediol etc., diaminoethanes, diaminopropanes, diaminobutane, the diamido pentane, diamino hexane, the diamido heptane, the diamido octane, the diamido nonane, the aliphatic diamine class of diamino decane etc., glycolic acid, hydracrylic acid, hydroxybutyric acid, hydroxypentanoic acid, hydroxycaproic acid, the hydroxyl enanthic acid, Hydroxyoctanoic acid, the hydroxyl n-nonanoic acid, the aliphatic hydroxyl carboxylic acids of hydroxydecanoic acid etc. etc.
In addition, for the end to the liquid crystal liquid crystal property high polymer main chain as required carries out modification, can in starting monomer, add simple function monomer or trifunctional monomer.Can enumerate the monomer that has a carboxyl, amino, alcohol radical, phenylol, mercapto etc. in the molecule as the simple function monomer, for example be aromatic carboxylic acid class, aliphatic carboxylic acid class, aromatic amine, aliphatics amine, phenol, aliphatics phenol.In addition, can enumerate for example trimellitic acid, dihydroxy benzoic acid, hydroxybenzoic acid, benzenetricarboxylic acid, pyromellitic acid etc. as the trifunctional monomer.
Make these monomer condenses obtain condensation class liquid crystal liquid crystal property macromolecule, be in particular the method that obtains liquid crystalline polyester and be not particularly limited, can adopt the known any method in this field suitably.For example can adopt arbitrarily by make carboxylic acid become sour halogenide or in the presence of the dicyclohexyl carbon diimide etc. with the carboxylic acid activation after, make method that itself and alcohol, amine etc. react, pass through after the phenol acetic esterization, make itself and carboxylic acid reaction the synthetic method of taking off acetic acidreaction, make carboxylic acid become carboxylate as methyl esters after, in the presence of needed suitable catalyzer, make it with the synthetic method of the dealcoholization of alcohol reaction etc.
In liquid crystal liquid crystal property macromolecule of the present invention, aforesaid condensation class liquid crystal liquid crystal property macromolecule can use separately, also can use 2 kinds or 3 kinds or the above high molecular potpourri of condensation class liquid crystal liquid crystal property.In addition, in the scope of not damaging effect of the present invention, can mix the various liquid crystal liquid crystal property macromolecules that use optically active liquid crystal macromolecule, liquid crystal liquid crystal property ethene polymers, liquid crystal liquid crystal property polysiloxane, liquid crystal liquid crystal property epoxy resin etc. or non-liquid crystal polymer etc. aptly.
Embodiment
Below adopt embodiment that the present invention is specifically described, but the present invention is not subjected to the restriction of these embodiment.
Various analytical approachs used among reference example and the embodiment are as follows.
(1) mensuration of liquid crystal liquid crystal property macromolecule logarithm viscosity
Adopt Wu Bailuode type viscosity meter, in phenol/tetrachloroethane (60/40 weight ratio) mixed solvent, measure at 30 times.
(2) observation of orientation inequality and defective
Adopt the BH2 polarizing microscope of Olympus Optical (strain) system to be orientated uneven observation.
What (3) the liquid crystal liquid crystal property macromolecule was formed determines
Liquid crystalline polyester is dissolved in the heavy-hydrogenated chloroform, adopts 400MHz's
1H-NMR (JNM-GX400 that NEC is made) measures, and determines its composition.
(reference example 1)
Synthesize the liquid crystal liquid crystal property polymer substance (logarithm viscosity=0.22dl/g, Tg=61 ℃) of formula (1) and comprise (R)-3-methyl hexane-1 of formula (2), and the optically active liquid crystal polymer substance of 6-diol units (logarithm viscosity=0.17dl/g).
The synthetic of these macromolecular materials is in the o-dichlorobenzene solvent, under triethylamine coexistence, makes the react enforcement of the sour chloride corresponding with dicarboxylic acid units and diol compound.
The liquid crystal liquid crystal property macromolecule of the 18.1g formula (1) of gained and the liquid crystal liquid crystal property macromolecule mixture of 1.9g formula (2) are dissolved in the 80g N-Methyl pyrrolidone preparation liquid crystal liquid crystal property Polymer Solution-1.
Formula (1)
Formula (2)
* represent optical activity carbon
[embodiment]
The thick polyetheretherketones of 60 μ m (PEEK) orientation substrate film is implemented friction treatment method shown in Figure 2.Conveying belt 2 is the stainless steel endless belt that the mirror finish of 0.2S is crossed for surface roughness, nip rolls 5 has the nitrile rubber exocuticle, external diameter is 120mm, the extruding force of nip rolls is the 1N/cm thin-film width, belt supports roller (3,4) external diameter is 800mm, the transporting velocity of film is the 30m/ branch, friction roller 6 usefulness nylon systems frictions yardage roll around, its external diameter is 150mm, makes the turning axle of friction roller be 45 ° of inclinations with respect to the film throughput direction, and the linear velocity of rotation is the 500m/ branch, the amount of being pressed into that makes the nylon cloth high-quality green tea is 500 μ m, implements friction treatment.
The 400mm that so handled is wide, thickness be the banded polyetheretherketone (PEEK) of 60 μ m as the orientation substrate film, on the friction treatment face of this film, use the wide liquid crystal liquid crystal property Polymer Solution-1 of roll-coater coating 300mm.After the drying,, make the liquid crystal liquid crystal property macromolecular orientation, be cooled to room temperature then, make liquid crystal structure (rocking nematic liquid crystal) fixing 200 ℃ of following heat treated 15 minutes.
Whether be orientated uneven and the observation of number of defects purpose to the banded liquid crystal liquid crystal property macromolecule layer of gained, all can determine does not have fully.
[comparative example]
Adopt Fig. 1 device of the prior art to replace device of the present invention, do not use nip rolls, the belt that uses rubber to make, and belt supports roller (3, the condition of the external diameter of external diameter 4), the transporting velocity of film, friction roller, friction cloth, the angle of inclination of friction roller turning axle, the linear velocity of rotation, the high-quality green tea amount of being pressed into of nylon cloth etc. is the same with embodiment 1, implements friction treatment thus.The laminate film of gained is carried out the evaluation the same with embodiment 1.It is uneven to determine to produce orientation on whole film.
The invention effect
According to the present invention, because the metal watch that the orientation substrate film is close to have mirror finish The conveyer belt of face is to implement continuously friction treatment, even friction roller is with respect to the film throughput direction Implement obliquely oblique friction, also can dislocation not take place and produce wrinkle to the thin-film width direction, And can be evenly, stably long-time continuous is carried out friction treatment. Friction treatment at this film Form liquid crystal molecule or the high molecular oriented layer of liquid crystal liquid crystal property on the face, with the optical element of gained thus When making the goods of preliminary dimension according to purposes, can improve effective rate of utilization, enhance productivity.
Claims (6)
1. rubbing method is characterized by at the conveying belt upper conveyor belt shape film with metal surface that mirror finish crosses, and adopts the friction roller that is configured on this conveying belt to implementing friction treatment on this film surface simultaneously.
2. as the rubbing method of claim 1 record, it is characterized by the endless belt that conveying belt is a continuous drive.
3. as the rubbing methods of claim 1 or 2 records, it is characterized by conveying belt and be the belt that the above mirror finish of surfaceness of 0.4S is crossed.
4. as any rubbing method of claim 1～3 record, it is characterized by conveying belt with 2～20kg/mm
2(each basal area) fixing tension-stretched.
5. as any rubbing method of claim 1～4 record, it is characterized by and have the roller combination that film and conveying belt are adjacent in the upstream of friction roller.
6. as any rubbing method of claim 1～5 record, it is characterized by the turning axle that makes friction roller implement friction treatment with being the angle of inclination with respect to the carrying method of film.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP332670/2002 | 2002-11-15 | ||
| JP2002332670A JP3982392B2 (en) | 2002-11-15 | 2002-11-15 | Rubbing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1501145A true CN1501145A (en) | 2004-06-02 |
| CN100428024C CN100428024C (en) | 2008-10-22 |
Family
ID=32697626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101149744A Expired - Fee Related CN100428024C (en) | 2002-11-15 | 2003-11-14 | Friction method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3982392B2 (en) |
| CN (1) | CN100428024C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464598B (en) * | 2007-12-21 | 2010-10-06 | 比亚迪股份有限公司 | Processing method for improving friction effect in LCD fabrication |
| WO2013097515A1 (en) * | 2011-12-31 | 2013-07-04 | 京东方科技集团股份有限公司 | Array substrate, liquid crystal display device and alignment rubbing method |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4086310B2 (en) * | 2005-01-25 | 2008-05-14 | 日東電工株式会社 | Manufacturing method of optical film |
| JP4698257B2 (en) * | 2005-03-11 | 2011-06-08 | 常陽工学株式会社 | Method and apparatus for aligning flexible film |
| JP4826182B2 (en) * | 2005-09-12 | 2011-11-30 | 日本ゼオン株式会社 | Coating film forming device |
| JP4972433B2 (en) * | 2007-03-08 | 2012-07-11 | Ｊｓｒ株式会社 | Method for producing liquid crystal alignment film |
| JP5142357B2 (en) * | 2007-03-08 | 2013-02-13 | Ｊｓｒ株式会社 | Method for producing liquid crystal alignment film |
| JP2012226231A (en) * | 2011-04-22 | 2012-11-15 | Nitto Denko Corp | Method for manufacturing long-sized circular polarizer |
| JP6081098B2 (en) | 2011-10-27 | 2017-02-15 | 日東電工株式会社 | Manufacturing method of long laminated polarizing plate and long laminated polarizing plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06110059A (en) * | 1992-09-25 | 1994-04-22 | Casio Comput Co Ltd | Method and device for orientation processing |
| JPH08160429A (en) * | 1994-12-02 | 1996-06-21 | Fuji Photo Film Co Ltd | Rubbing method, rubbing device and production of optical compensation sheet |
| JPH09152594A (en) * | 1995-11-30 | 1997-06-10 | Sekisui Chem Co Ltd | Surface treatment of long-sized film and production of polarizing plate with metallic foil reflection plate for liquid crystal display device |
| JPH09239812A (en) * | 1996-03-08 | 1997-09-16 | Sekisui Chem Co Ltd | Production of optical film and optical film |
| JP2000098392A (en) * | 1998-07-31 | 2000-04-07 | Merck Patent Gmbh | Method for rubbing substrate |
-
2002
- 2002-11-15 JP JP2002332670A patent/JP3982392B2/en not_active Expired - Lifetime
-
2003
- 2003-11-14 CN CNB2003101149744A patent/CN100428024C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464598B (en) * | 2007-12-21 | 2010-10-06 | 比亚迪股份有限公司 | Processing method for improving friction effect in LCD fabrication |
| WO2013097515A1 (en) * | 2011-12-31 | 2013-07-04 | 京东方科技集团股份有限公司 | Array substrate, liquid crystal display device and alignment rubbing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3982392B2 (en) | 2007-09-26 |
| JP2004170454A (en) | 2004-06-17 |
| CN100428024C (en) | 2008-10-22 |
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