WO2012096524A2 - Procédé de fabrication d'un film à retard de phase à motifs - Google Patents

Procédé de fabrication d'un film à retard de phase à motifs Download PDF

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Publication number
WO2012096524A2
WO2012096524A2 PCT/KR2012/000289 KR2012000289W WO2012096524A2 WO 2012096524 A2 WO2012096524 A2 WO 2012096524A2 KR 2012000289 W KR2012000289 W KR 2012000289W WO 2012096524 A2 WO2012096524 A2 WO 2012096524A2
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WO
WIPO (PCT)
Prior art keywords
substrate
alignment
phase delay
layer
monomer composition
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PCT/KR2012/000289
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English (en)
Korean (ko)
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WO2012096524A3 (fr
Inventor
이성규
최진욱
김성민
이승희
이명훈
강신웅
정광운
Original Assignee
주식회사 동진쎄미켐
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Publication of WO2012096524A2 publication Critical patent/WO2012096524A2/fr
Publication of WO2012096524A3 publication Critical patent/WO2012096524A3/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value

Definitions

  • the present invention relates to a method for producing a patterned phase retardation film, and more particularly, using a substrate for retarding the phase of light, and forming a photocurable monomer composition layer at regular intervals and curing to produce a patterned phase retardation film. And a patterned phase delay film produced by the method.
  • the liquid crystal display is a flat panel display which is widely used for various purposes.
  • various technical advances have been made in order to serve as a screen display device in various fields, and the goal is to realize high quality images while maintaining the characteristics of light weight, thinness, and low power consumption.
  • Edo is also developing technology.
  • the liquid crystal display includes a twisted nematic (TN) liquid crystal display, a vertically aligned liquid crystal display (VA), an in-plane switching (IPS) liquid crystal display, an optically compensated bend (OCB) liquid crystal display, depending on the arrangement and driving method of the liquid crystal.
  • TN twisted nematic
  • VA vertically aligned liquid crystal display
  • IPS in-plane switching
  • OBC optically compensated bend
  • the liquid crystals initially form a predetermined array due to the influence of the alignment layer or the properties of the liquid crystal itself, but when the electric field is applied, the arrangement of the liquid crystals changes. Due to the optical anisotropy of the liquid crystals, polarization of light passing through the liquid crystals The image is displayed by changing the state depending on the arrangement state of the liquid crystal and making it appear as a difference in the amount of transmitted light using the polarizing plate.
  • phase delay films have been developed as optical compensation for STN-specific interference colors (coloring) called blue mode or yellow mode caused by elliptical polarization.
  • color film As a color compensation film is unnecessary.
  • various phase retardation films have been laminated for the purpose of expanding the viewing angle and improving image quality, and a phase retardation film having various functions has been required.
  • phase delay film As the manufacturing technique of the phase delay film, there are a stretching technique and an alignment technique, and in particular, an alignment technique is necessary to consider all of polarization, reflection, refraction, interference, diffraction, and scattering.
  • a mask As a technique for manufacturing a patterned phase delay film or a liquid crystal panel alignment direction, a mask is used and rubbed in Japanese Patent Application Laid-Open No. 194-082784, Korean Patent No. 10-0243039, and Korean Patent Publication No. 10-2003-0083700. And a technique such as use of light irradiation twice, there is a problem that the process is complicated and inferior in precision.
  • the alignment agent layer forming step Since the number of times can be reduced, the process can be simplified, and it has been confirmed that the present invention can produce a phase delay film having a fine pattern.
  • the present invention relates to a method for producing a patterned phase retardation film, and more particularly, using a substrate for retarding the phase of light, and forming a photocurable monomer composition layer at regular intervals and curing to produce a patterned phase retardation film. And a patterned phase delay film produced by the method.
  • the alignment agent layer formation and the formation of the alignment property in the alignment agent layer are performed only once. Since the aligned orientation can be formed, there is an effect that the manufacturing process is significantly shortened. In addition, there is an advantage to reduce the cost accordingly, it is possible to manufacture a phase delay film formed with a more sophisticated pattern. In addition, when forming the orientation by rubbing directly on the substrate itself that can be phase delay, it is not necessary to form the alignment agent layer can further shorten the manufacturing process, reducing the height difference between the photocurable monomer composition layer and the substrate Can be.
  • FIG. 1 shows a manufacturing process of a patterned phase delay film according to an embodiment of the present invention.
  • Figure 2 shows the manufacturing process of the patterned phase delay film according to another embodiment of the present invention.
  • Figure 3 shows a process for producing a patterned phase delay film according to another embodiment of the present invention.
  • Figure 4 shows the manufacturing process of the patterned phase delay film according to another embodiment of the present invention.
  • Figure 5 shows the manufacturing process of the patterned phase delay film according to another embodiment of the present invention.
  • the present invention in one aspect, (a) forming an alignment agent layer on a substrate to retard the phase of light; (b) forming alignment in the alignment layer in one direction; And (c) forming and curing the photocurable monomer composition layer on the substrate on which the alignment is formed at regular intervals.
  • the substrate is characterized in that the substrate that can delay the phase of the light.
  • a process of forming an alignment layer on a substrate and forming alignment through rubbing or light irradiation was performed twice, but in the present invention, the phase of light may be delayed.
  • the alignment agent layer formation and the step of forming the alignment property in the alignment agent layer may be performed only once to form a finely patterned phase delay film.
  • phase delay substrate of the prior art, and preferably, a cyclo olefin polymer (COP) or polycarbonate (PC) film may be used.
  • the films may be fabricated using a technique for stretching an optical material having a specific phase retardation value, and may also be fabricated using a surface orientation technique (e.g., a liquid crystal alignment technique in a liquid crystal display device) on the film.
  • the phase delay value may be realized by applying an optical material having an upper portion thereof. Most of these films are applied to optical compensation films to improve the viewing angle of liquid crystal display devices.
  • Phase delay substrates delay the phase of light, and when the phase delay is ⁇ / 4, linear polarization is changed to circular polarization. Can be. Therefore, in the present invention, the substrate may be characterized by delaying the phase of light by ⁇ / 4. [Lambda] in the magnitude of the phase delay is a sign indicating a wavelength of light whose phase is to be delayed.
  • phase delay substrate Using a phase delay substrate according to the prior art, an alignment agent layer is formed on the substrate. Formation of the alignment agent layer is performed through processes such as spin, comma, gravure, dip, slot die, silk screen, inkjet printing, and the like. Can be performed. In the case of polyimide, it is dissolved in a solvent such as ⁇ -Butyrolactone (GBL), 1,2-butylene carbonate (BC) and NMethyl-pyrrolidone (NMP), and the first rotation is performed at 500 to 700 rpm for 20 to 25 seconds.
  • GBL ⁇ -Butyrolactone
  • BC 1,2-butylene carbonate
  • NMP NMethyl-pyrrolidone
  • the spin coating By rotating the spin coating at 2500 to 3500 rpm for 70 to 80 seconds to form an alignment layer having a thickness of 0.5 to 1.3 ⁇ m.
  • the mixture After spin coating, in order to remove the solvent of the alignment film and to cure the alignment film, the mixture is left at 75 to 85 ° C. for 1 to 5 minutes and left at 210 to 230 ° C. for 15 to 30 minutes. Conditions for removing the solvent and curing the alignment layer may vary depending on the boiling point and volatility of the solvent used.
  • the rubbing process is performed to the board
  • the orientation is preferably formed in a direction different from the optical axis of the phase delay substrate.
  • the rubbing process may be performed at a rotational speed of the rubbing roll at 600 rpm, and if the impurities in the alignment material remain after the rubbing process, it may cause a defect. Therefore, the cleaning process should be performed. It can be carried out by soaking the substrate sufficiently soaked or immersing the substrate itself in the cleaning agent for 10 seconds to 5 minutes.
  • the cleaning agent may be performed using an alkali solution, deionized water, and propane-2-ol.
  • the substrate has both the phase delay direction of the substrate itself and the alignment direction of the alignment agent layer.
  • the photocurable monomer composition layer is formed and cured at regular intervals on the substrate.
  • the photocurable monomer composition (RM) layer is formed and cured, the phase of light can be delayed according to the alignment direction of the alignment agent layer. Since the photocurable monomer composition layer is formed at regular intervals, the photocurable The portion where the monomer composition layer is not formed may still follow the phase delay direction of the substrate to obtain a patterned phase retardation film.
  • the phase delay effect of the photocurable monomer composition may depend on the film thickness, the alignment state of the alignment layer, and the composition of the RM material, and changing these parameters may change the structure of the optical film, for example, the inclination angle and the change thereof. You can control the degree.
  • the photocurable monomer composition (RM) is a liquid crystalline compound having a polymerizable group, and in particular, may have an acrylic group, a vinyl ether group, or an epoxide functional group, and the composition mixture of RM is used to increase the crosslinking of the polymer.
  • the above polymerizable functional groups such as polymerizable mesogenic compounds having monoreactive to direactive and / or nonpolar to polar compounds may be mixed and used to change the alignment profile by changing the compositional ratio.
  • the curing conditions of the RM can be changed by the reactivity of the RM material, the thickness of the coating layer, the polymerization initiator, and the output of the UV lamp.
  • the photopolymerization initiator may be appropriately selected according to the RM, and in the case of polymerization using UV light, a radical-producing photoinitiator which decomposes by UV irradiation and initiates a polymerization reaction, for example, a commercially available photoinitiator Irgacure 651 may be used.
  • a cationic photoinitiator may be used which photocures using a cation instead of a radical.
  • the formation of the photocurable monomer composition layer is made of a thickness of 40 ⁇ 1000 ⁇ m intervals and 0.5 ⁇ 1.3 ⁇ m, the thickness can be adjusted according to the viscosity and printing speed of the RM layer, constant intervals and thickness It is important to print with.
  • the solvent solvent
  • the solvent is removed and left for 1 to 5 minutes at 75 ⁇ 85 °C to cure the RM layer, and is left for 15 to 30 minutes at 210 ⁇ 230 °C.
  • Conditions for removing the solvent and curing the RM layer may vary depending on the boiling point and volatility of the solvent used.
  • the photocurable monomer composition layer may be formed by using a printing process such as ink jet, silk-screen, micro-gravure, and the like, in addition to the printing process. It is possible to use photolithography and to use other methods to form the RM layers at regular intervals and thicknesses.
  • the thickness of the photocurable monomer layer By controlling the thickness of the photocurable monomer layer, it is possible to control the phase delay size, and when the magnitude of the phase delay is ⁇ / 2, the direction of circularly polarized light can be reversed.
  • the linearly polarized light when the substrate delays the phase of light by ⁇ / 4, the linearly polarized light is changed to circularly polarized light, and when the photocurable monomer composition layer delays the phase of light by ⁇ / 2, light is lighted by the substrate and the light. After passing through all of the curable monomer composition layers, the linearly polarized light is changed into circularly polarized light, and the direction of circularly polarized light (in the case of left circularly polarized light is changed to right circularly polarized light) once more.
  • the alignment direction of the alignment agent layer is formed such that the substrate is perpendicular to the axis of the phase delay direction, the phase delay size of the substrate is ⁇ / 4, and the photocurable monomer layer has a ⁇ / 2 phase delay effect.
  • the patterned phase delay film to be produced has a portion for converting linearly polarized light into left circularly polarized light and a portion for converting to right circularly polarized light at regular intervals.
  • the phase delay film thus prepared is mounted on a panel display that separates the left eye image and the right eye image, and a 3D stereoscopic image can be realized by using polarized glasses separating the left circular polarization and the right circular polarization.
  • the said orientation agent layer can form orientation by a rubbing process, and can also form orientation by light irradiation.
  • the alignment agent is a polyimide, a polyimide compound, a polyvinyl alcohol, a polyamic acid, a polystylene, a polyamide And it may be characterized in that it is selected from the group consisting of polyoxyethylene (polyoxyethylene) compound.
  • the alignment agent layer may be formed to a thickness of 0.5 to 1.3 ⁇ m, and the thickness may be adjusted according to the viscosity and the formation speed of the alignment material.
  • the alignment agent may use a polymer material having an alignment force through at least one reaction of photoisomerization, photolysis, and photocuring.
  • Usable aligning agents include polyimide, polyamic acid, polynorbornene, phenylmaleimide copolymer, polyvinylcinamate, polyazobenzene, Polyethyleneimide, Polyvinylalcohol, Polyamide, Polyethylene, Polystylene, Polyphenylenephthalamide, Polyester, CMPI (chloromethylated polyimide) , Polyvinylcinnamate (PVC) and polymethyl methacrylate (polymethyl methacrylate).
  • DMF dimethylformamide
  • NMP NMethyl-pyrrolidone
  • chloroform CHCl 3
  • Coating of the alignment layer is made of a thickness of 0.5 ⁇ 1.3 ⁇ m, the thickness can be adjusted according to the viscosity and printing speed of the alignment agent.
  • the mixture is left at 75 to 85 ° C. for 1 to 5 minutes and left at 210 to 230 ° C. for 15 to 30 minutes.
  • Conditions for removing the solvent and curing the alignment layer may vary depending on the boiling point and volatility of the solvent used.
  • the polarization direction set according to the alignment agent is different, and in the case of CMPI, since the alignment is formed in the direction orthogonal to the polarization direction, the light is polarized in a direction parallel to the rubbing direction, and 10 to 50 mW /
  • the alignment process may be performed by irradiating the cm 2 polarized ultraviolet ray in a few tens of seconds (10 to 30 seconds) for a long time (5 to 15 minutes).
  • the wavelength and the irradiation time of the irradiated light vary depending on the alignment agent, and may be classified according to the kind of mechanism of photoalignment (photodegradation, photoduplexing, photoisomerization).
  • a light alignment process is performed by irradiating light having a wavelength of 200 to 250 nm with light of 15 to 25 mW / cm 2 for 1 to 10 minutes.
  • Figure 2 shows the manufacturing process of the patterned phase delay film comprising the step of forming the orientation of the alignment agent layer by light irradiation.
  • step (a) may be characterized in that to form an alignment agent layer at a predetermined interval.
  • FIG. 3 and 4 illustrate the manufacturing process of the patterned phase delay film including the step of forming the alignment agent layer at regular intervals.
  • the alignment layer is formed by a rubbing process.
  • the alignment layer is formed by irradiation with light.
  • a method for forming an orientation by rubbing a substrate for retarding a phase of light in a direction different from a phase delay direction of the substrate And (b) forming and curing the photocurable monomer composition layer on the substrate on which the alignment is formed at regular intervals.
  • step (a) may be characterized in that directly rubbing without forming the alignment agent layer on the substrate. That is, in the prior art, a step of forming an alignment layer must be included in order to form an alignment on the substrate, but in the present invention, a method of directly forming an alignment on the substrate through a process of directly rubbing without forming the alignment layer on the substrate is used. It was.
  • the substrate is preferably composed of COP (cyclo olefin polymer) or PC (polycarbonate), even if the orientation is formed through the rubbing process is a material that does not lose the phase delay function of the substrate itself More preferred.
  • the step (a) may be formed to form an orientation in a direction perpendicular to the axis of the phase delay direction of the substrate.
  • the photocurable monomer composition layers may be formed and cured at regular intervals to form an additional phase delay layer on the substrate.
  • the axis of the phase retardation direction of the photocurable monomer composition layer depends on the rubbing direction of the substrate.
  • the prepared patterned phase delay film Has a portion that converts linearly polarized light into left circularly polarized light and a portion that converts right circularly polarized light at regular intervals.
  • the phase delay film thus prepared is mounted on a panel display that separates the left eye image and the right eye image, and a 3D stereoscopic image can be realized by using polarized glasses separating the left circular polarization and the right circular polarization.
  • a PC film (WRS148, Teijin), which is a transparent base film having a phase delay value of ⁇ / 4 in one direction, and disperse the polyimide, a rubbing alignment agent, in a NMP solvent as a solvent, add 2 ml dropwise, and rotate for 23 seconds at 600 rpm.
  • a PI alignment layer (first alignment layer) having a thickness of 1 ⁇ m was formed through a spin coating process of rotating 70 seconds at 3000 rpm. In order to evaporate and harden the solvent of the first alignment layer, the solvent was placed at 80 ° C. for 1 minute and at 220 ° C. for 20 minutes. Then, the rubbing roll was rotated at 600 rpm to perform a rubbing process in one direction. After the rubbing process, impurities remaining in the alignment material remained in the washing process.
  • the photocurable monomer composition (RMS03-013C, Merck) layers were formed at regular intervals over the rubbed alignment agent layer. Formation of the photocurable monomer composition layer was printed at a speed of 20mm / min to form a RM layer of 3 ⁇ m thickness at a interval of 400 ⁇ m, RM through 1 minute drying at 60 °C and 1 minute ultraviolet irradiation at 20mW / cm 2 The layer was cured to produce a patterned phase delay film.
  • Photocurable monomer composition (RMS03-013C, Merck) layers were formed on the rubbed substrate at regular intervals. Formation of the photocurable monomer composition layer was printed at a speed of 20mm / min to form a RM layer of 3 ⁇ m thickness at a interval of 400 ⁇ m, RM through 1 minute drying at 60 °C and 1 minute ultraviolet irradiation at 20mW / cm 2 The layer was cured to produce a patterned phase delay film.
  • the alignment agent layer formation and the formation of the alignment property in the alignment agent layer are performed only once. Since the aligned orientation can be formed, there is an effect that the manufacturing process is significantly shortened. In addition, there is an advantage to reduce the cost accordingly, it is possible to manufacture a phase delay film formed with a more sophisticated pattern. In addition, when forming the orientation by rubbing directly on the substrate itself that can be phase delay, it is not necessary to form the alignment agent layer can further shorten the manufacturing process, reducing the height difference between the photocurable monomer composition layer and the substrate Can be.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention porte sur un procédé de fabrication d'un film à retard de phase à motifs, et, plus particulièrement, sur un procédé de fabrication d'un film à retard de phase à motifs, dans lequel procédé des couches à composition à monomères durcissable à la lumière sont formées à une distance prédéterminée et durcies de façon à former un film à retard de phase à motifs, et sur un film à retard de phase à motifs fabriqué par le procédé décrit ci-dessus. Selon la présente invention, une plaque déjà apte à réaliser un retard de phase est utilisée, et des couches à composition à monomères durcissable à la lumière sont formées à une distance prédéterminée et durcies. Par conséquent, un processus pour former une couche de matériau d'orientation et une orientation pour la couche de matériau d'orientation peut être effectué une seule fois pour former une orientation de motifs. Par conséquent, le nombre de processus de fabrication peut être réduit de façon significative. En résultat, les coûts de fabrication peuvent être réduits. Par conséquent, un film à retard de phase sur lequel un motif plus précis est formé peut être fabriqué. Egalement, lors d'un frottement direct sur la plaque ayant la fonction de retard de phase pour former l'orientation, il peut être inutile de former la couche de matériau d'orientation. Par conséquent, le nombre de processus de fabrication peut être encore davantage réduit, et, également, une différence de hauteur entre la couche à composition à monomères durcissable à la lumière et la plaque peut être réduite.
PCT/KR2012/000289 2011-01-12 2012-01-11 Procédé de fabrication d'un film à retard de phase à motifs WO2012096524A2 (fr)

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KR10-2011-0003040 2011-01-12
KR1020110003040A KR20120081743A (ko) 2011-01-12 2011-01-12 패턴된 위상지연 필름의 제조 방법

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KR101655283B1 (ko) * 2014-04-23 2016-09-07 경희대학교 산학협력단 무배향막 광학 필름 및 그의 제조 방법

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Publication number Priority date Publication date Assignee Title
KR20050004455A (ko) * 2003-07-02 2005-01-12 엘지.필립스 엘시디 주식회사 이온빔 배향을 이용한 위상차 필름의 제조방법
KR20050018354A (ko) * 2003-08-12 2005-02-23 삼성전자주식회사 액정 표시 장치와 이의 제조 방법
KR20100113477A (ko) * 2008-09-22 2010-10-21 소니 주식회사 위상차 판의 제조 방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050004455A (ko) * 2003-07-02 2005-01-12 엘지.필립스 엘시디 주식회사 이온빔 배향을 이용한 위상차 필름의 제조방법
KR20050018354A (ko) * 2003-08-12 2005-02-23 삼성전자주식회사 액정 표시 장치와 이의 제조 방법
KR20100113477A (ko) * 2008-09-22 2010-10-21 소니 주식회사 위상차 판의 제조 방법

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