WO2010058988A2 - 다층 플라스틱 기판 및 이의 제조방법 - Google Patents
다층 플라스틱 기판 및 이의 제조방법 Download PDFInfo
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- WO2010058988A2 WO2010058988A2 PCT/KR2009/006842 KR2009006842W WO2010058988A2 WO 2010058988 A2 WO2010058988 A2 WO 2010058988A2 KR 2009006842 W KR2009006842 W KR 2009006842W WO 2010058988 A2 WO2010058988 A2 WO 2010058988A2
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- buffer layer
- plastic substrate
- multilayer plastic
- polymer
- substrate
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- 0 CC(C)O*C1CCC(**)CC1 Chemical compound CC(C)O*C1CCC(**)CC1 0.000 description 2
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
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- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B32B7/04—Interconnection of layers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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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
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
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Definitions
- the present invention relates to a multi-layered plastic substrate and a method of manufacturing the same, and more particularly, to a multi-layered plastic substrate and improved manufacturing method of high temperature heat deformation and gas barrier properties.
- Glass substrates used in display devices, frames, crafts, containers, etc. have many advantages such as small coefficient of linear expansion, excellent gas barrier property, high light transmittance, surface flatness, excellent heat resistance and chemical resistance, but they are fragile and easily broken and dense. There is a heavy disadvantage due to the high.
- replacing the glass substrate with a plastic substrate may reduce the overall weight of the display device and provide design flexibility, and it may be more impact-resistant and economical than the glass substrate when manufactured in a continuous process.
- a high glass transition temperature capable of withstanding the process temperature of a transistor element and the deposition temperature of a transparent electrode, an oxygen and water vapor barrier property, and a process temperature to prevent aging of liquid crystal and organic light emitting materials
- a process temperature to prevent aging of liquid crystal and organic light emitting materials Small coefficient of linear expansion and dimensional stability to prevent warpage of substrates due to changes, high mechanical strength compatible with process equipment used in conventional glass substrates, chemical resistance to etch process, high light transmittance, low birefringence and Properties such as scratch resistance of the surface are required.
- coating layers examples include an organic planarization layer that reduces defects on the surface of the polymer and gives flatness, a gas barrier layer made of an inorganic material for blocking gases such as oxygen and water vapor, and an organic or organic-inorganic hard for imparting scratch resistance to the surface. Coating layer etc. are mentioned.
- a process of coating an inorganic gas barrier layer on a polymer substrate and forming a hard coating layer on the gas barrier layer is a problem when manufacturing the multilayer structure is a polymer substrate and a gas barrier layer Deformation of the polymer substrate and cracking of the inorganic thin film due to the large difference in coefficient of linear expansion between them, and peeling may occur. Therefore, it can be said that the adhesion between the coating layer and the design of a suitable multi-layer structure that can minimize the stress at the interface of each layer.
- a monomer thin film is formed on a polymer substrate film of Vitex Systems of the United States, polymerized by irradiation with ultraviolet (UV) light and polymerized (solidified organic layer), and an inorganic thin film is formed thereon by sputtering. The process was repeated to prepare several layers of organic-inorganic layers, and a flexible substrate having excellent gas barrier properties.
- UV ultraviolet
- solidified organic layer solidified organic layer
- US Patent No. 6,465,953 discloses a method for dispersing getter particles that can react with incoming oxygen and water vapor on a plastic substrate in order to use the plastic substrate in an organic light emitting device sensitive to oxygen and water vapor.
- the size of the getter particles should be sufficiently smaller than the size of the particular wavelength emitted and the dispersion should be even enough to be able to penetrate the substrate without scattering the emitted light.
- this method was intended to minimize the amount of oxygen and water vapor introduced by coating a gas barrier film made of an inorganic material on the plastic substrate.
- the method is difficult to produce a substrate by uniformly dispersing the nano-particles of 100 to 200 nm size, the thickness of the plastic substrate must be thick to contain a large amount of getter particles that can react with oxygen and water vapor, Since the inorganic gas barrier film is directly coated, cracks or peeling may occur on the gas barrier film due to temperature changes.
- U.S. Patent No. 6,322,860 discloses a crosslinkable composition comprising a silica particle or the like on one side or both sides of a polyglutamide sheet within 1 mm thickness prepared by reaction extrusion (polyfunctional acrylate monomer or oligomer , Alkoxysilane, and mixtures thereof), followed by photocuring or thermosetting, to prepare a crosslinked coating film, coating a gas barrier film thereon, and optionally coating the crosslinking coating film on the barrier film to display plastics for display devices.
- the substrate was manufactured. However, the method is only small enough that the oxygen and water vapor transmission rates can be used in liquid crystal displays in some special cases, and still does not improve on the low linear expansion coefficient and excellent dimensional stability required for use as glass replacement substrates. Did.
- US Patent No. 6,503,634 discloses an organic-inorganic hybrid ORMOCER and a silicon oxide layer coated on one polymer substrate or in the middle layer of two polymer substrates, which are 1/30 or less of the polymer substrate before the oxygen permeability coating, and the water vapor transmission rate.
- the multilayer film which is 1/40 or less of the polymer base material before is shown.
- the above method has shown a possibility that oxygen, water vapor transmission rate can be significantly reduced compared to the polymer base material before coating, and can be used as a packaging material, but there is no mention of improving the coefficient of linear expansion and dimensional stability.
- Japanese Laid-Open Patent Publication No. 10-016142 discloses a gas barrier laminate film in which a polymer film is sequentially laminated with a metal oxide layer, a ceramic layer formed from polysilazane, and a cured layer of a partial hydrolyzate of an alkoxysilane.
- a metal oxide layer a ceramic layer formed from polysilazane
- a cured layer of a partial hydrolyzate of an alkoxysilane since the metal oxide is directly laminated on the polymer film, there is a problem due to the difference in the coefficient of linear expansion.
- the present invention simultaneously satisfies low linear expansion coefficient, improvement of high temperature thermal deformation due to excellent dimensional stability, and excellent gas barrier property, and also has a glass that has a weakness and a heavy disadvantage without the problem caused by the difference in coefficient of linear expansion between layers. It is an object of the present invention to provide a multilayer plastic substrate and a method of manufacturing the same.
- the multilayer plastic substrate is intended to be used as a packaging material requiring gas barrier properties and a container material for various uses in addition to the substrate of the display device.
- the polymer substrate First and second buffer layers including a cured product by UV curing and thermosetting of a buffer composition capable of UV curing and thermosetting on upper and lower surfaces of the polymer substrate;
- a multi-layered plastic substrate comprising a gas blocking layer and a second buffer layer sequentially provided on one surface of at least one of the first buffer layer formed on the upper surface of the polymer substrate and the first buffer layer formed on the lower surface of the polymer substrate.
- the polymer substrate may have a single layer structure, or may have a structure in which two or more polymer layers are bonded.
- the present invention (a) coating a UV curable and thermosetting buffer composition on one surface of the polymer substrate to form a first buffer layer, (b) UV-curing the first buffer layer formed in the step (a) Step, (c) coating the UV curable and thermosetting buffer composition on the other surface of the polymer substrate having the first buffer layer on one surface to form a first buffer layer, (d) the agent formed in step (c) UV curing the first buffer layer, (d) simultaneously thermosetting the UV-cured first buffer layer provided on both sides of the polymer substrate, and (e) at least one agent of the first buffer layer formed on both sides of the polymer substrate.
- 1 on one side of the buffer layer Provided is a method of manufacturing a multilayer plastic substrate comprising sequentially forming a gas barrier layer and a second buffer layer.
- the present invention (a) coating a UV curable and thermosetting buffer composition on one surface of the polymer substrate to form a first buffer layer; (b) UV curing the first buffer layer; (c) thermosetting the UV-cured first buffer layer; (d) forming a gas barrier layer on the first buffer layer; (e) forming a second buffer layer on the gas barrier layer to form a multilayer film having a structure in which a polymer substrate, a first buffer layer, a gas barrier layer, and a second buffer layer are sequentially stacked; (f) repeating the above steps (a) to (e) to produce another multilayer film having the same structure as in step e); And (g) bonding the multilayer films prepared in the above steps (e) and (f) to each other such that the polymer substrate surfaces are adjacent to each other to form a multilayer film having a symmetrical structure. to provide.
- the present invention provides an electronic device including the multilayer plastic substrate.
- the multi-layered plastic substrate of the present invention having the above-described configuration can be used instead of the glass substrate as a plastic substrate for display devices because it satisfies the low linear expansion coefficient, the improvement of the high temperature thermal deformation due to the excellent dimensional stability and the excellent gas barrier property. It can also be very useful as a material for packaging and containers requiring gas barrier properties.
- 1 to 3 each show a cross-section of a multilayer plastic substrate according to an exemplary embodiment of the present invention.
- the present invention is a polymer substrate; First and second buffer layers including a cured product by UV curing and thermosetting of a buffer composition capable of UV curing and thermosetting on upper and lower surfaces of the polymer substrate; A multi-layered plastic substrate comprising a gas blocking layer and a second buffer layer sequentially provided on one surface of at least one of the first buffer layer formed on the upper surface of the polymer substrate and the first buffer layer formed on the lower surface of the polymer substrate. to provide.
- the gas blocking layer 120 and the second buffer layer 130 may have a stacked structure, but the present invention is not limited thereto.
- the gas blocking layer and the second buffer layer may be provided only on one surface of the first buffer layer formed on one of the upper and lower surfaces of the polymer substrate.
- the first buffer layer 110, the polymer substrate 100, the first buffer layer 110, the gas barrier layer 120, and the second buffer layer 130 may have a stacked structure. However, it is not limited thereto.
- the polymer substrate may have a single layer structure as shown in FIG. 1 or 2, and according to another exemplary embodiment of the present invention, the polymer substrate may have a structure in which two or more polymer layers are bonded.
- the second buffer layer 130, the gas blocking layer 120, the first buffer layer 110, the polymer substrate 100, the bonding layer 111, the polymer substrate 100, and the first The first buffer layer 110, the gas blocking layer 120, and the second buffer layer 130 may have a stacked structure, but the present invention is not limited thereto.
- the polymer substrate is preferably in the form of a film or sheet of 10 to 2,000 ⁇ m thickness.
- the polymer substrate may be made of a single layer.
- the polymer substrate may have a structure in which two or more polymer layers are bonded.
- the final multilayer plastic substrate produced has a symmetrical structure up and down, thereby minimizing warpage of the film.
- the polymer thickness is a structure in which two or more polymer layers are bonded, they may be manufactured using a conventional acrylic adhesive or a thermal bonding method.
- the content is not particularly limited, but the thickness of the bonding layer containing the adhesive is preferably 0.1 to 10 ⁇ m.
- the polymer substrate may be prepared through a solution casting method or a film extrusion process, and may be briefly annealed for a few seconds to several minutes in the vicinity of the glass transition temperature in order to minimize deformation due to temperature after the preparation. After annealing, primer coating may be applied to the surface of the polymer substrate in order to improve the coating property and adhesion, or surface treatment may be performed by plasma treatment using corona, oxygen or carbon dioxide, ultraviolet-ozone treatment, ion beam treatment with a reaction gas, or the like. have.
- the polymer substrate may be selected from one or more selected from the group consisting of a single polymer, two or more polymer blends, and a polymer composite material containing an organic or inorganic additive.
- the polymer when the multilayer film of the present invention is used as a substrate of the liquid crystal display device, since the manufacturing process for forming the thin film transistor and the transparent electrode is performed at a high temperature of 200 ° C or higher, high heat resistance that can withstand such high temperature It is preferable to use a polymer having.
- the polymer having the above-mentioned properties include polynorbornene, aromatic florene polyester, polyethersulfone, bisphenol A polysulfone, polyimide and the like.
- polymers such as polyethylene terephthalate, polyethylene naphthalene, polyarylate, polycarbonate, and cyclic olefin copolymer Can be.
- a nanomaterial is dispersed in a polymer, and a polymer composite material containing an organic or inorganic additive may be used.
- the polymer composite material may include a polymer-clay nanocomposite in which clay nanomaterials are dispersed in a polymer matrix.
- the polymer-clay nanocomposite has a smaller amount of clay than a conventional composite such as glass fiber due to the small particle size ( ⁇ 1 ⁇ m) and the large aspect ratio of the clay.
- physical properties such as dimensional stability can be improved. That is, in order to improve the above properties, it is important to peel off the clay layer having a layered structure and disperse it well in the polymer matrix, and to satisfy this, the polymer-clay nanocomposite is satisfied.
- Polymers that can be used in the polymer-clay nanocomposite include polystyrene, polymethacrylate, polyethylene terephthalate, polyethylene naphthalene, polyarylate, polycarbonate, cyclic olefin copolymer, polynorbornene, aromatic florene polyester, Polyether sulfone, polyimide, epoxy resin, polyfunctional acrylate, and the like, and as the clay, laponite, montmorillonite, megadite and the like can be used.
- the first buffer layer serves to alleviate the difference in the large linear expansion coefficient between the polymer substrate and the gas barrier layer, and to improve the adhesion between the polymer substrate and the gas barrier layer.
- the first buffer layer may planarize the surface of the polymer substrate to minimize defects formed during deposition of the gas barrier layer.
- the first buffer layer comprises a UV cured and heat-cured cured product
- the content of the uncured epoxy group after curing is not less than 10% by weight and less than 100% by weight, preferably 30% by weight to 95% by weight More preferably, it is 50 weight%-90 weight%.
- the buffer layer may include a cured product by UV curing and thermosetting of a mixture of at least one hydrolyzate of the organosilane and metal alkoxide and a curable epoxy resin.
- the hydrolyzate of at least one of the organosilane and the metal alkoxide is 5 to 95 parts by weight
- the curable epoxy resin is 5 to 95 parts by weight based on 100 parts by weight of the cured product.
- the first buffer layer may be formed by coating a UV curable and thermosetting buffer composition on a polymer substrate, followed by UV curing and thermosetting. Specifically, at least one of an organosilane and a metal alkoxide may be partially hydrolyzed to prepare a sol composition, and then mixed with a curable epoxy resin to be coated on a polymer substrate to be prepared, followed by UV curing and heat. Hardened.
- the organosilane is not particularly limited as long as it includes an organosilane group, and at least one member selected from the group consisting of compounds represented by the following Formulas 1 to 3 may be used.
- the metal alkoxide is not particularly limited as long as it is a metal alkoxide, and at least one selected from the group consisting of compounds represented by the following general formula (4) can be used.
- the curable epoxy resin is not particularly limited as long as it includes an epoxy group, and may include one or more selected from alicyclic epoxy resins represented by the following Chemical Formulas 5 to 10 and triglycidyl isocyanurate represented by the following Chemical Formula 11; have.
- X may be the same or different from each other, hydrogen, halogen, alkoxy, acyloxy, alkylcarbonyl, alkoxycarbonyl, or -N (R 2 ) 2 having 1 to 12 carbon atoms,
- R 1 may be the same or different from each other, alkyl having 1 to 12 carbon atoms, alkenyl having 2 to 12 carbon atoms, alkynyl, aryl having 6 to 20 carbon atoms, arylalkyl, alkylaryl, arylalkenyl, alkenylaryl, aryl Alkynyl, alkynylaryl, halogen, amide, aldehyde, ketone, alkylcarbonyl, carboxy, mercapto, cyano, hydroxy, alkoxy having 1 to 12 carbon atoms, alkoxycarbonyl having 1 to 12 carbon atoms, sulfonic acid, phosphoric acid , Acryloxy, methacryloxy, epoxy, or a vinyl group,
- R 2 is hydrogen or alkyl having 1 to 12 carbon atoms
- n 1 to 3
- M represents a metal selected from the group consisting of aluminum, zirconium and titanium
- R 3 may be the same as or different from each other, a halogen, an alkyl, alkoxy, acyloxy, or hydroxy group having 1 to 12 carbon atoms,
- Z is an integer of 3 or 4.
- R 20 in formula (8) represents an alkyl group or trimethylolpropane residue and q is 1-20.
- R 21 and R 22 may be the same or different and each represents H or CH 3 and r is 0 to 2.
- the first buffer composition for forming the first buffer layer may include an organosilane and a metal alkoxide alone or in the form of a mixture.
- the content of the organosilane and the metal alkoxide is 5 to 95 based on 100 parts by weight of the buffer composition. It is preferable that it is a weight part.
- the curable epoxy resin may be used in an amount of 5 to 95 parts by weight based on 100 parts by weight of the buffer composition, and may further include 1 to 90 parts by weight of a curing agent based on 100 parts by weight of the buffer composition.
- the curable epoxy resin may further include 0.1 to 20 parts by weight of catalyst based on 100 parts by weight of the buffer composition.
- the preparing of the curable epoxy resin may include mixing 1 to 90 parts by weight of the curing agent with respect to 100 parts by weight of the buffer composition and 0.1 to 20 parts by weight of the catalyst based on 100 parts by weight of the buffer composition; And mixing 1 to 95 parts by weight of the epoxy resin with respect to 100 parts by weight of the curing agent and the buffer composition to which the catalyst is added. More preferably, 91 parts by weight of the epoxy curing agent and 1 part by weight of the catalyst are mixed, heated and stirred for 30 minutes, and then 50 parts by weight of the solid epoxy is stirred for 10 minutes to melt, and then the catalyst is added to the curing agent and the melted epoxy. By mixing and stirring, a transparent curable epoxy resin can be prepared.
- the epoxy resin may be a compound selected from an alicyclic epoxy resin represented by the formula (5) to 10 and the triglycidyl isocyanurate represented by the formula (11), or a combination of two or more.
- the combination may be used in combination with other epoxy resins for refractive index adjustment so that the refractive index of the resin combination and, if necessary, the glass filler are equal.
- curing agent is preferable,
- Anhydride, glutaric anhydride, methylhexahydro phthalic anhydride, methyltetrahydrophthalic anhydride, hydrogenated methylnadic anhydride, hydrogenated hydric anhydride, etc. can be selected and used 1 or more types.
- methylhexahydrophthalic anhydride and hydrogenated methylnadic anhydride are preferred from the viewpoint of transparency.
- the catalyst contains acetic acid, benzoic acid, salicylic acid, para-toluenesulfonic acid, boron trifluoride-amine complex, boron trifluoride ammonium salt, aromatic diazonium salt, aromatic sulfonium salt, aromatic iodonium salt and aluminum complex as curing accelerators.
- Tertiary amines such as 1,8-diazabicyclo [5.4.0] undecene-7 and triethylenediamine
- Imidazoles such as 2-ethyl-4-methylimidazole
- Phosphorus compounds such as triphenylphosphine and tetraphenylphosphinium; Tetraphenylborate; Quaternary ammonium salts; Organometallic salts;
- the first buffer composition may be prepared from the compound exemplified above, and optionally, a filler and a solvent may be additionally added to the composition.
- the filler is metal, glass powder, diamond powder, silicon oxide, clay, calcium phosphate, magnesium phosphate, barium sulfate, aluminum fluoride, calcium silicate, magnesium silicate, barium silicate, barium carbonate, barium hydroxide, and aluminum silicate. It can select and use 1 or more types from the group which consists of.
- the solvent is not particularly limited as long as it is a solvent compatible or soluble with epoxy, a curing agent, and a catalyst.
- One or more solvents selected from butyl ketone, methanol, ethanol, propanol and isopropanol can be used.
- the amount of the filler and the solvent to be added is not particularly limited as needed.
- the first buffer layer By forming the first buffer layer using the above-described materials, it is possible to provide a plastic film having a flat surface even at a high temperature while minimizing deformation during thermosetting.
- UV curing of the buffer composition is not particularly limited as long as it can achieve a radical reaction with a UV light source, but it is preferable to use a mercury or metal halide lamp alone or in combination.
- the surface hardness of the first buffer layer may be increased by UV curing.
- the first buffer layer serves to alleviate the difference in the large linear expansion coefficient between the polymer substrate and the gas barrier layer, and to improve the adhesion between the polymer substrate and the gas barrier layer.
- the first buffer layer may planarize the surface of the polymer substrate to minimize defects formed during deposition of the gas barrier layer.
- the second buffer layer is not particularly limited, but may be formed of the same composition as the composition of the first buffer layer.
- Partial hydrolyzate of an organosilane selected from the group consisting of the compounds represented by the formulas (1) to (3) may be used, and at least one organic selected from the group consisting of the compounds represented by the formulas (1) to (3)
- a composition obtained by partially hydrolyzing at least one selected from the group consisting of silane and the compound represented by Formula 4 may be used, or from the group consisting of the compounds represented by Formulas 1 to 3
- At least one metal alkoxide selected from the group consisting of at least one organosilane selected from the compound represented by Formula 4 and at least one selected from the group consisting of hydrolyzed and alicyclic epoxy resins represented by Formulas 5 to 10, and Represented by the formula (11) Can be manufactured using a curable epoxy resin containing triglycidyl isocyanurate or the like.
- the second buffer composition for forming the second buffer layer may be prepared from the compound exemplified above, and optionally a filler may be added to the composition.
- the filler is metal, glass powder, diamond powder, silicon oxide, clay, calcium phosphate, magnesium phosphate, barium sulfate, aluminum fluoride, calcium silicate, magnesium silicate, barium silicate, barium carbonate, barium hydroxide, and aluminum silicate. It can select and use 1 or more types from the group which consists of.
- Another embodiment of the present invention is the step of (a) coating a UV curable and thermosetting buffer composition on one surface of the polymer substrate to form a first buffer layer, (b) the first buffer layer formed in step (a) UV curing, (c) forming a first buffer layer by coating a UV curable and thermosetting buffer composition on the other surface of the polymer substrate having the first buffer layer on one surface, (d) step (c) UV curing the first buffer layer formed in the step (d) simultaneously thermosetting the UV-cured first buffer layer provided on both sides of the polymer substrate, and (e) of the first buffer layer formed on both sides of the polymer substrate On one surface of at least one first buffer layer Provided is a method of manufacturing a multilayer plastic substrate comprising sequentially forming a gas barrier layer and a second buffer layer.
- Another embodiment of the present invention comprises the steps of (a) coating a UV curable and thermosetting buffer composition on one surface of the polymer substrate to form a first buffer layer; (b) UV curing the first buffer layer; (c) thermosetting the UV-cured first buffer layer; (d) forming a gas barrier layer on the first buffer layer; (e) forming a second buffer layer on the gas barrier layer to form a multilayer film having a structure in which a polymer substrate, a first buffer layer, a gas barrier layer, and a second buffer layer are sequentially stacked; (f) repeating the above steps (a) to (e) to produce another multilayer film having the same structure as in step e); And (g) bonding the multilayer films prepared in the above steps (e) and (f) to each other such that the polymer substrate surfaces are adjacent to each other to form a multilayer film having a symmetrical structure. to provide.
- the coating method of the first buffer layer is not particularly limited, but methods such as spin coating, roll coating, bar coating, dip coating, gravure coating, and spray coating may be used, but are not limited thereto.
- the thickness of the 1st buffer layer formed as mentioned above is 0.1-50 micrometers after hardening.
- the thickness is thinner than 0.1 ⁇ m, it is susceptible to obstacles due to pinhole defects and suffers from limitations in which leakage current appears.
- the thickness exceeds 50 ⁇ m, distortion of the film during curing may occur. This is formed and there is a problem of poor flatness.
- the flatness of roughness Ra of the surface of the first buffer layer is very important. If the first buffer layer is not flat, defects may occur when the gas barrier layer is deposited, thereby reducing barrier properties.
- the surface flatness of the first buffer layer is preferably about 1 nm, and more preferably within 1 nm. Specifically, the surface flatness may have a Ra value of 0.1 to 1.2 nm.
- UV curing is not particularly limited as long as it can achieve a radical reaction by a UV light source, but it is preferable to use a mercury or metal halide lamp alone or in combination.
- UV curing for example, may be performed for 1 second to several hours, such as 1 minute or less, with an energy of 20 mJ / cm 2 to 3000 mJ / cm 2 .
- thermosetting may be carried out, for example, at a temperature of 100-200 degrees for 1 minute to several hours, such as 1 hour or less, preferably 10 to 20 minutes.
- the gas barrier layer is a high density inorganic layer having a small coefficient of linear expansion, and may block gases such as oxygen and water vapor.
- the gas barrier layer is SiO x (where, x is an integer of 1 to 4), SiO x N y (where, x and y are an integer of 1 to 3), Al 2 O 3, and selected from the group consisting of ITO It is preferred that it is formed from at least one inorganic substance.
- the gas barrier layer preferably has a thickness of 5 to 1,000 nm.
- the thickness is thinner than 5 nm, the dispersed state of the layered scatterer including silicon oxide is not sufficient, and the maze effect, which is a requirement for the expression of gas barrier properties, and the homogeneity of the gas barrier layer are impaired, resulting in high oxygen barrier properties. Difficult to obtain.
- the thickness thereof is preferably not more than 1,000 nm.
- the oxygen permeability and the water vapor permeability of the polymer substrate itself generally have a value of several tens to thousands of units, a high density transparent inorganic material or a nanometer thin metal thin film is physically or chemically formed on the polymer film.
- the method of vapor deposition coating to block oxygen and water vapor may be used.
- the thickness of the gas barrier layer formed through the above method is preferably 5 to 1,000 nm, preferably 10 to 500 nm, more preferably 10 to 300 nm.
- a sputtering method As the deposition coating method, a sputtering method, a chemical vapor deposition method, an ion plating method, a plasma chemical vapor deposition method, a sol-gel method, or the like can be used.
- a hydration reaction occurs between a hydroxyl group of the gas barrier layer and a hydroxyl group of the first buffer layer and the second buffer layer at a defective portion such as pinholes or cracks that may exist in the gas barrier layer to heal the defect of the gas barrier layer by repairing the gas.
- the blocking property can be further improved.
- composition of the second buffer layer laminated on the gas barrier layer is not particularly limited. That is, a composition for organic coating using general acrylic, an organosilane, a metal alkoxide, an organic-inorganic hybrid composition, and the first buffer composition may be used, and the thickness of the coating may vary depending on the case.
- Coating method of the second buffer layer may be coated on the gas barrier layer by a method such as spin coating, roll coating, bar coating, dip coating, gravure coating and spray coating.
- the curing method of the second buffer layer is not limited to the method as long as it can effectively cure using a method such as thermosetting, UV curing, infrared curing and high frequency heat treatment.
- the thickness after curing of the second buffer layer may be 0.1 to 50 ⁇ m, preferably 0.2 to 10 ⁇ m, and more preferably 0.5 to 20 ⁇ m.
- the protective layer may sufficiently serve as a protective layer to prevent cracking of the gas barrier layer. There is no problem.
- the flatness of the second buffer layer is also very important. Since devices such as ITO used in the LCD process or the OLED process are deposited directly on the second buffer layer, these devices have a phenomenon in which current is concentrated when the flatness of the second buffer layer is high. Can not function properly. Current trends require better flatness in OLEDs, the next generation of displays rather than LCDs.
- the surface flatness of the second buffer layer is also preferably around 1 nm, more preferably within 1 nm. Specifically, the flatness may have a Ra value of 0.1 to 1.2 nm.
- the multilayer plastic substrate according to the present invention may have a very small value of the coefficient of linear expansion up to 6.5 ppm / K by minimizing deformation during thermal curing by instantaneous surface hardness is improved by UV curing.
- the coefficient of linear expansion of the multilayer plastic substrate according to the present invention may be 5 to 30 ppm / K, more preferably 6 to 20 ppm / K.
- the multilayer plastic substrate according to the present invention has a pencil hardness of 2 or more, preferably may have a pencil hardness of 2H or more and 8H or less.
- the multilayer plastic substrate according to the present invention preferably has an oxygen transmittance of ⁇ 0.05 cc / m 2 / day / atm, preferably a light transmittance of 85% or more, and a water vapor transmittance of ⁇ 0.005 g / m 2 / day. Do.
- the multilayer plastic substrate according to the present invention can exhibit excellent gas barrier properties with an oxygen transmission rate of less than 0.05 cc / m 2 / dau / atm and a water vapor transmission rate of less than 0.005 g / m 2 / day.
- the multilayer plastic substrate of the present invention can replace the fragile and heavy glass substrate that has been mainly used in conventional display devices, etc., and can also be used as a material requiring excellent gas barrier property.
- an electronic device such as an image display device including the multilayer plastic substrate.
- the multilayer plastic substrate according to the present invention can be used as a substrate of an image display device or a cover of a display element.
- Electronic devices including the image display device may be manufactured by conventional methods known in the art.
- TEOS tetraethoxysilane
- GTMS glycidoxypropyltrimethoxysilane
- the solvent was removed for 5 minutes in a 90 ° C convection oven, UV cured, and thermally cured in a 150 ° C convection oven for 1 hour to form a second buffer layer. It was. At this time, the thickness of the second buffer layer measured by alpha stepper after curing was 0.5 micron.
- the surface roughness of the second buffer layer measured in the room temperature tapping mode of AFM is 0.4 nanometer or less at a measurement area of 50 microns x 50 microns.
- gas barrier layer and the second buffer layer were sequentially formed on the other surface of the first buffer layer after the heat curing in the same manner as described above.
- the substrate according to Example 1-1 had no bending when placed on a flat bottom.
- optical transmittance, oxygen transmittance, water vapor transmittance, linear expansion coefficient, and pencil hardness which are main required properties of the display device substrate, were measured, and the results are shown in Table 1 below.
- Each of the physical property measurement methods are as follows and the same applies to all Examples and Comparative Examples below.
- Oxygen permeability measured with a relative humidity of 0% at room temperature by the method of ASTM D 3985 using OX-TRAN 2/20 of MOCON.
- the oxygen and water vapor transmission rates of the PET film itself used in Example 1-1 are 25 cc / m 2 / day / atm and 4.5 g / m 2 / day, respectively, and the coefficient of linear expansion is 22.4 ppm / K.
- a buffer composition was prepared in the same manner as in Example 1-1, except that 10 parts by weight of ANHYDRIDE (MH700G, New Japan Chemical), which was a curing agent, was added, to prepare a multilayer plastic substrate having the same structure.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- Example 1-1 except that 80 parts by weight of tetraethoxysilane, 10 parts by weight of glycidoxypropyltrimethoxysilane were mixed, and then 28 parts by weight of distilled water, 80 parts by weight of ethanol and 0.04 parts by weight of HCl were added thereto.
- a buffer composition was prepared in the same manner as the above, and a multilayer plastic substrate having the same structure was prepared. The physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- a buffer composition was prepared in the same manner as in Example 1-1 except for further adding 30 parts by weight of colloidal silica (MIBK-ST), and a multilayer plastic substrate having the same structure was prepared.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- a buffer composition was prepared in the same manner as in Example 1-1, and a multilayer plastic substrate having the same structure was prepared. The physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- a multilayer plastic substrate was manufactured in the same manner as in Example 1-1, except that the gas barrier layer and the second buffer layer were formed only on one surface of the PET.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- Plastic substrates having the same structure were prepared using the buffer coating composition prepared in the same manner as in Example 1-1. However, the curing of the buffer coating composition was cured only by heat curing at 120 ° C. for 1 hour without UV curing.
- the first buffer layer is coated on one surface of the PET film and then thermally cured, it does not form a symmetrical structure in the thickness direction of the film, and thus curvature occurs during curing, and the gas barrier layer and the second buffer layer Forming sequentially, it could be seen that the warpage is worse.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- Plastic substrates having the same structure were prepared using the buffer coating composition prepared in the same manner as in Example 1-1. However, the curing of the buffer coating composition was prepared by removing the solvent and UV curing for 5 minutes in a 90 °C convection oven, the heat curing step was omitted.
- UV curing alone does not completely cure, and thus the adhesion between the interfaces is lowered to produce a coated film having low physical properties such as pencil hardness.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 1.
- Table 1 a) the instrument measurement range is 0.05 cc / m 2 / day / atm and b) the instrument measurement range is 0.005 g / m 2 / day.
- TEOS tetraethoxysilane
- GTMS glycidoxypropyltrimethoxysilane
- the solvent was removed for 5 minutes in a 90 ° C convection oven, UV cured, and thermally cured in a 120 ° C convection oven for 1 hour to coat the first buffer layer on one surface of the PET film.
- Inject 50 sccm of Ar gas using Atec Systems' DC / RF magnetron sputter on the first buffer layer after hardening, and deposit silicon oxide (SiO) at 1000 Watt of RF (13.56MHz) power for 10 minutes under a pressure of 5 mtorr. x, an integer of x 1-4) was deposited on the thin film.
- the thickness of the silicon oxide film observed by SEM was 100 nm.
- the solvent was removed for 5 minutes in a 90 ° C convection oven, UV cured, and thermally cured in a 120 ° C convection oven for 1 hour to form a second buffer layer. It was. At this time, the thickness of the second buffer layer measured by alpha stepper after curing was 0.5 micron.
- the surface roughness of the second buffer layer measured in the room temperature tapping mode of AFM is 0.4 nanometer or less at a measurement area of 50 microns x 50 microns.
- the multilayer film was prepared once more in the same manner as above.
- the multilayer film 100b prepared in the same manner as described above.
- the polymer substrate of) was laminated and irradiated for 6 minutes with an ultraviolet irradiator (DYMAX 2000-EC) to induce a curing reaction of the adhesive composition to form a plastic substrate having a symmetrical structure.
- an ultraviolet irradiator DYMAX 2000-EC
- the substrate according to Example 2-1 had no bending when placed on a flat bottom.
- optical transmittance, haze, oxygen transmittance, water vapor transmittance, linear expansion coefficient, and pencil hardness which are main required properties of the display device substrate, were measured, and the results are shown in Table 2.
- a buffer composition was prepared in the same manner as in Example 2-1, except that 10 parts by weight of ANHYDRIDE (MH700G, New Japan Chemical), which was a curing agent, was added, to prepare a multilayer plastic substrate having the same structure.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a buffer composition was prepared in the same manner as the above, and a multilayer plastic substrate having the same structure was prepared.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a buffer composition was prepared in the same manner as in Example 2-1, except that 30 parts by weight of colloidal silica (MIBK-ST) was further added, thereby preparing a multilayer plastic substrate having the same structure.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a buffer composition was prepared in the same manner as in Example 2-1, and a multilayer plastic substrate having the same structure was prepared. The physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a plastic substrate having the same structure was prepared using the buffer coating composition prepared in the same manner as in Example 2-1. However, the curing of the buffer coating composition was cured only by heat curing at 120 ° C. for 1 hour without UV curing.
- the first buffer layer is coated on one surface of the PET film and then thermally cured, it does not form a symmetrical structure in the thickness direction of the film, and thus curvature occurs during curing, and the gas barrier layer and the second buffer layer Forming sequentially, it could be seen that the warpage is worse.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a plastic substrate having the same structure was prepared using the buffer coating composition prepared in the same manner as in Example 2-1. However, the curing of the buffer coating composition was prepared by removing the solvent and UV curing for 5 minutes in a 90 °C convection oven, the heat curing step was omitted.
- UV curing alone does not completely cure, and thus the adhesion between the interfaces is lowered to produce a coated film having low physical properties such as pencil hardness.
- the physical properties of the prepared multilayer plastic substrate were measured and shown in Table 2.
- a) the instrument measurement range is 0.05 cc / m 2 / day / atm and b) the instrument measurement range is 0.005 g / m 2 / day.
Abstract
Description
Claims (22)
- 고분자 기재와; 상기 고분자 기재의 상면 및 하면에 UV 경화 및 열경화 가능한 버퍼 조성물의 UV 경화 및 열경화에 의한 경화물을 포함하는 제1 버퍼층과 상기 고분자 기재의 하면에 형성된 제1 버퍼층 중 적어도 하나의 제1 버퍼층의 일 면에 순차적으로 구비된 가스 차단층 및 제2 버퍼층을 포함하는 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 고분자 기재는 단일층 구조 또는 2층 이상의 고분자 층이 접합된 구조인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 고분자 기재는 단일 고분자, 1 종 이상의 고분자 블렌드, 및 유기 또는 무기 첨가물이 함유된 고분자 복합 재료로 이루어진 군으로부터 선택되는 적어도 1 종 이상을 포함하는 것을 특징으로 하는 다층 플라스틱 기판.
- 청구항 3에 있어서, 상기 단일 고분자 또는 1종 이상의 고분자 블렌드를 위한 고분자는 폴리노보넨, 아로마틱 플로렌 폴리에스테르, 폴리에테르설폰, 비스페놀에이폴리설폰, 폴리이미드, 폴리에틸렌테레프탈레이트, 폴리에틸렌나프탈렌, 폴리아릴레이트, 폴리카보네이트, 및 환상형 올레핀 공중합체로 이루어진 군으로부터 선택되는 적어도 1종 이상을 포함하는 것을 특징으로 하는 다층 플라스틱 기판.
- 청구항 3에 있어서, 상기 무기 첨가물이 함유된 고분자 복합 재료는 클레이 나노 물질이 고분자 매트릭스에 분산된 폴리머-클레이 나노 복합체인 것을 특징으로 하는 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 제1 버퍼층 또는 제2 버퍼층은 미경화된 에폭시기 함량이 10중량% 이상 100중량% 미만인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 제1 버퍼층 및 제2 버퍼층은 유기실란 및 금속알콕사이드 중 적어도 하나의 가수분해물과 경화형 에폭시 수지의 혼합물의 UV경화 및 열경화에 의한 경화물을 포함하는 것인 다층 플라스틱 기판.
- [규칙 제26조에 의한 보정 22.01.2010]
청구항 7에 있어서, 상기 유기실란은 하기 화학식 1 내지 화학식 3으로 표시되는 화합물로 이루어진 군으로부터 선택되는 적어도 1종 이상을 포함하고, 상기 금속알콕사이드는 하기 화학식 4로 표시되는 화합물로 이루어진 군으로부터 선택되는 적어도 1종 이상을 포함하며, 상기 경화형 에폭시 수지는 하기 화학식 5 내지 10으로 나타내는 지환식 에폭시 수지 및 하기 화학식 11로 표시되는 트리글리시딜 이소시아누레이트로 이루어진 군으로부터 선택되는 적어도 1 종 이상을 포함하는 것인 다층 플라스틱 기판: [화학식 1] (R1)m-Si-X(4-m) [화학식 2] (R1)m-O-Si-X(4-m) [화학식 3] (R1)m-N(R2)-Si-X(4-m) 상기 화학식 1 내지 화학식 3에서, X는 각각 독립적으로 서로 같거나 다를 수 있으며, 수소, 할로겐, 탄소수 1 내지 12의 알콕시, 아실옥시, 알킬카보닐, 알콕시카보닐, 또는 -N(R2)2이고, R1은 각각 독립적으로 서로 같거나 다를 수 있으며, 탄소수 1 내지 12의 알킬, 탄소수 2 내지 12의 알케닐, 알키닐, 탄소수 6 내지 20의 아릴, 아릴알킬, 알킬아릴, 아릴알케닐, 알케닐아릴, 아릴알키닐, 알키닐아릴, 할로겐, 아마이드, 알데하이드, 케톤, 알킬카보닐, 카복시, 머캅토, 시아노, 하이드록시, 탄소수 1 내지 12의 알콕시, 탄소수 1 내지 12의 알콕시카보닐, 설폰산, 인산, 아크릴옥시, 메타크릴옥시, 에폭시, 또는 비닐기이며, R2는 수소, 또는 탄소수 1 내지 12의 알킬이고, m은 1 내지 3의 정수이다. [화학식 4] M-(R3)z 여기서, M은 알루미늄, 지르코늄 및 티타늄으로 이루어진 군으로부터 선택되는 금속을 나타내며, R3은 각각 독립적으로 서로 같거나 다를 수 있으며할로겐, 탄소수 1 내지 12의 알킬, 알콕시, 아실옥시, 또는 하이드록시기이며, Z는 3 또는 4의 정수이다. [화학식 5] [화학식 6] [화학식 7] [화학식 8] 화학식 8에서 R20은 알킬기 또는 트리메틸롤프로판 잔기를 나타내고 q는 1 내지 20이다. [화학식 9] 여기서, R21 및 R22는 동일 또는 상이할 수 있고 각각 H 또는 CH3를 나타내고 r은 0 내지 2이다. [화학식 10] 여기서 s 는 0 내지 2이다. [화학식 11] - 청구항 7에 있어서, 상기 경화물 100 중량부에 대하여 유기실란 및 금속알콕사이드 중 적어도 하나의 가수분해물은 5 내지 95중량부이고, 상기 경화형 에폭시 수지는 5 내지 95 중량부인 것인 다층 플라스틱 기판.
- 청구항 6에 있어서, 상기 제1 버퍼층 및 제2 버퍼층 중 적어도 하나는 금속, 유리분말, 다이아몬드분말, 실리콘옥사이드, 클레이, 칼슘포스페이트, 마그네슘포스페이트, 바륨설페이트, 알루미늄 플루오라이드, 칼슘실리케이트, 마그네슘 실리케이트, 바륨실리케이트, 바륨카보네이트, 바륨하이드록사이드 및 알루미늄실리케이트로 이루어진 군으로부터 적어도 1 종 이상 선택되는 충진제; 경화제, 촉매 및 용매를 추가적으로 포함하는 것을 특징으로 하는 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 제1 버퍼층 및 제2 버퍼층의 두께가 0.1 ㎛ 내지 50 ㎛인 것을 특징으로 하는 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 가스차단층의 두께는 5 내지 1,000nm인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 선팽창계수는 5 내지 30ppm/KR인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 연필경도는 2H 내지 8H인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 표면 평탄도(Ra)는 0.1 내지 1.2nm인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 산소투과율이 <0.05 cc/㎡/day/atm인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 광투과도는 85% 이상인 것인 다층 플라스틱 기판.
- 청구항 1에 있어서, 상기 다층 플라스틱 기판의 수증기투과율은 <0.005 g/㎡/day인 것인 다층 플라스틱 기판.
- (a) 고분자 기재의 일면에 UV경화 및 열경화 가능한 버퍼 조성물을 코팅하여 제1 버퍼층을 형성하는 단계, (b) 상기 (a) 단계에서 형성한 제1 버퍼층을 UV경화하는 단계, (c) 상기 제1 버퍼층을 일면에 구비한 고분자 기재의 타면에 UV경화 및 열경화 가능한 버퍼 조성물을 코팅하여 제1 버퍼층을 형성하는 단계, (d) 상기 (c) 단계에서 형성한 제1 버퍼층을 UV 경화하는 단계, (e) 고분자 기재의 양면에 구비된 UV경화된 제1 버퍼층을 동시에 열경화하는 단계, 및 (f) 상기 고분자 기재의 양면에 형성된 제1 버퍼층 중 적어도 하나의 제1 버퍼층의 일 면에 가스 차단층 및 제2 버퍼층을 차례로 형성하는 단계를 포함하는 다층 플라스틱 기판의 제조방법.
- (a) 고분자 기재의 일면에 UV경화 및 열경화 가능한 버퍼 조성물을 코팅하여 제1 버퍼층을 형성하는 단계; (b) 상기 제1 버퍼층을 UV경화하는 단계; (c) 상기 UV경화된 제1 버퍼층을 열경화하는 단계; (d) 상기 제1 버퍼층 상에 가스 차단층을 형성하는 단계; (e) 상기 가스 차단층에 제2 버퍼층을 형성하여 고분자 기재, 제1 버퍼층, 가스 차단층 및 제2 버퍼층이 순차적으로 적층된 구조의 다층 필름을 형성하는 단계; (f) 상기 (a)~(e)의 과정을 반복하여 상기 e) 단계와 동일한 구조의 다층 필름을 하나 더 제조하는 단계; 및 (g) 상기 (e) 단계 및 상기 (f) 단계에서 각각 제조한 다층 필름을 고분자 기재면이 인접하도록 서로 접합하여 대칭 구조의 다층 필름을 형성하는 단계를 포함하는 다층 플라스틱 기판의 제조방법.
- 청구항 19 또는 20에 있어서, UV 경화는 수은 혹은 메탈 할라이드 램프를 단독 혹은 병행하여 에너지 20mJ/cm2 내지 3000mJ/cm2로 1초 내지 수시간수행하고, 열경화는 온도 100-200도에서 1분 내지 수시간 수행하는 것인 다층 플라스틱 기판의 제조방법.
- 청구항 1 내지 청구항 18 중 어느 하나의 항에 따른 다층 플라스틱 기판을 포함하는 전자소자.
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- 2009-11-19 US US13/130,015 patent/US9884469B2/en active Active
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Cited By (9)
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WO2012003416A1 (en) | 2010-07-02 | 2012-01-05 | 3M Innovative Properties Company | Barrier assembly |
US8628859B2 (en) | 2010-07-02 | 2014-01-14 | 3M Innovative Properties Company | Barrier film |
US9997657B2 (en) | 2010-07-02 | 2018-06-12 | 3M Innovative Properties Company | Barrier assembly |
US10038111B2 (en) | 2010-07-02 | 2018-07-31 | 3M Innovative Properties Company | Barrier assembly with encapsulant and photovoltaic cell |
US10693024B2 (en) | 2010-07-02 | 2020-06-23 | 3M Innovative Properties Company | Barrier assembly |
JP2014514981A (ja) * | 2011-05-16 | 2014-06-26 | エルジー・ケム・リミテッド | 多層プラスチック基板およびその製造方法 |
JP2014520390A (ja) * | 2011-05-16 | 2014-08-21 | エルジー・ケム・リミテッド | 太陽電池用保護フィルム及びこれを含む太陽電池 |
US10020406B2 (en) | 2011-05-16 | 2018-07-10 | Lg Chem, Ltd. | Protective film for solar cell and solar cell comprising the same |
CN112087897A (zh) * | 2020-09-11 | 2020-12-15 | Oppo广东移动通信有限公司 | 壳体组件及其制备方法和电子设备 |
Also Published As
Publication number | Publication date |
---|---|
CN102216074B (zh) | 2015-06-24 |
EP2357081A4 (en) | 2012-06-13 |
JP5605853B2 (ja) | 2014-10-15 |
EP2357081B1 (en) | 2014-08-06 |
US20110287233A1 (en) | 2011-11-24 |
EP2357081A2 (en) | 2011-08-17 |
JP2012509213A (ja) | 2012-04-19 |
KR101133063B1 (ko) | 2012-04-04 |
CN102216074A (zh) | 2011-10-12 |
US9884469B2 (en) | 2018-02-06 |
WO2010058988A3 (ko) | 2010-08-26 |
KR20100056421A (ko) | 2010-05-27 |
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