WO2015178391A1 - 樹脂シート、粘着剤層付き樹脂シート、及びそれらを用いてなる用途 - Google Patents
樹脂シート、粘着剤層付き樹脂シート、及びそれらを用いてなる用途 Download PDFInfo
- Publication number
- WO2015178391A1 WO2015178391A1 PCT/JP2015/064367 JP2015064367W WO2015178391A1 WO 2015178391 A1 WO2015178391 A1 WO 2015178391A1 JP 2015064367 W JP2015064367 W JP 2015064367W WO 2015178391 A1 WO2015178391 A1 WO 2015178391A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin sheet
- depression
- meth
- band
- acrylate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
-
- 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
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
-
- 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
- G02F1/13338—Input devices, e.g. touch panels
Definitions
- the present invention is a resin sheet made of a cross-linked resin having a band-like depression for folding, and is excellent in optical characteristics and thermomechanical characteristics, and is useful as a folding display or a lighting base material.
- the present invention relates to applications such as protective plates, electrode substrates, touch panel substrates, and protective plates for illumination.
- a flat glass plate has been often used as a base material for a display.
- a flat glass substrate is used for a protective plate (cover) which is the forefront of the display, a liquid crystal display, an organic EL display, a touch panel, and the like.
- a foldable display has been proposed as a next generation display.
- This display is folded at the center of the display when not in use, and is expanded to about twice the size when used to display an image on the entire surface.
- it is compact and portable, it can be used for large screens, easily recognize characters, and display moving images using the original high definition.
- each member constituting the display must be bent 180 °.
- an outermost protective plate cover film / sheet
- touch panel touch panel
- display device and the like.
- these base materials are made of resin, and so are electrode materials and display materials.
- electrodes constituting touch panel sensors can be made flexible with organic conductive materials such as metal nanowires and PEDOT, and display materials can be made flexible with organic EL and E-Ink. .
- the protection plate that protects the internal touch panel and display device was not flexible enough to be foldable.
- the protective plate is required to have a surface hardness comparable to that of glass in order to prevent scratches, but in the case of a foldable display, it is also necessary to be soft enough to bend 180 °. Both performances are in conflict with each other, and in order to achieve both, one side or both sides of the soft base film had to be hard coated with a thick thickness.
- a thick hard coat layer can only obtain a pencil hardness of about 5H, and the hard hard coat layer is cracked when folded 180 °, so that it is impossible to manufacture a foldable display. It is.
- Patent Documents 1 and 2 a resin molded body with high hardness can be obtained, but when it is extremely thin, cracking occurs during handling as in the case of thin glass, making it difficult to manufacture.
- the folding portion In the case of a foldable display, the folding portion needs to be bent with a radius of curvature of 3 mm or less, and in the case of a portable terminal, it is desired to endure folding more than 10,000 times.
- the present invention provides a resin sheet that can meet the demands for high hardness, excellent optical properties and thermomechanical properties, and excellent foldability, lightweight and thin, and a folding display. It is intended.
- the present inventors have made extensive studies in view of such circumstances, and as a result, in a transparent resin sheet made of a crosslinked resin having a thickness of 0.1 to 1 mm and a pencil hardness of 3H or more, the resin is unidirectionally in the plane. It was found that by forming a band-like depression for folding a sheet, it was excellent in optical properties and thermomechanical properties with high hardness, and it was also excellent in foldability, and the present invention was completed.
- the gist of the present invention is a transparent resin sheet made of a crosslinked resin (A) having a thickness of 0.1 to 1 mm and a pencil hardness of 3H or more, for folding the resin sheet in one direction in the plane.
- the present invention relates to a resin sheet in which at least one band-like depression is formed on one side or both sides.
- the present invention relates to a resin sheet in which the band-like depression is filled with a transparent soft crosslinked resin so that the folding band-like depression cannot be recognized. That is, the present invention relates to a resin sheet in which a band-like depression for folding the resin sheet is filled with a crosslinked resin (B) having the same refractive index as that of the resin sheet.
- a resin sheet in which a band-like depression for folding the resin sheet is filled with a crosslinked resin (B) having the same refractive index as that of the resin sheet.
- folding means that the folding portion has a radius of curvature of 3 mm or less, and the radius of curvature (m) is the reciprocal of the curvature.
- the resin sheet can be used for applications such as a resin sheet with an adhesive layer, a protective plate for display, an electrode substrate, a touch panel substrate, a protective plate for organic EL lighting, and a light guide plate. .
- the resin sheet of the present invention is a resin sheet that has high hardness and excellent optical properties and thermomechanical properties, is also excellent in foldability, is lightweight and thin, can respond to demands such as folding displays, a protective plate for folding displays, Suitable for electrode substrates, touch panel substrates, and the like.
- (meth) acrylate is a generic term for acrylate and methacrylate
- (meth) acryl is a generic term for acrylic and methacrylic
- polyfunctional here means having two or more (meth) acryloyl groups in the molecule.
- the crosslinked resin (A) used in the present invention is a crosslinked resin obtained by polymerizing and curing (crosslinking) a light and / or thermosetting composition.
- a light and / or thermosetting composition for example, (meth) acrylic composition, epoxy composition, photocurable composition such as thiol / ene addition system, (meth) acrylic composition, epoxy composition, allyl composition, styrene composition , Thermosetting compositions such as amide-based compositions, imide-based compositions, urethane-based compositions, and thiourethane-based compositions. These may be used alone or in combination of two or more.
- a photocurable composition (a) at the point of mass-productivity, More preferably, it contains the following component (a1) and (a2) at the point of the optical characteristic of a resin sheet.
- Examples of the polyfunctional (meth) acrylate compound (a1) include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, Propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, butylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate 1,6-hexanediol di (meth) acrylate, nonanediol di (meth) acrylate, glycerin di (meth) acrylate, pentaerythritol di (meth) ) Acrylate, ethylene glycol diglycidyl ether di (meth) acrylate, diethylene
- pentadecane di (meth) acrylate, 2,2-bis [4- ( ⁇ - (meth) acryloyloxyethoxy) cyclohexyl] propane, 1,3-bis ((meth) acryloyloxymethyl) cyclohexane, 1,3-bis ((meth) acryloyloxyethyloxymethyl) cyclohexane, 1,4-bis ((meth) acryloyloxymethyl) cyclohexane, 1,4-bis ((meth) acryloyloxyethyloxymethyl) cyclohexane, etc.
- Polyfunctional urethane (meth) acrylate, polyfunctional epoxy (meth) acrylate, polyfunctional polyester (meth) acrylate, polyfunctional polyether (meth) acrylate, etc. may be mentioned. These may be used alone or in combination of two or more.
- bis (hydroxy) tricyclo [5.2.1.0 2,6 ] decane di (meth) acrylate, bis (hydroxymethyl) tricyclo [5.2.1] in terms of the surface hardness of the resin sheet.
- 0.0 2,6 ] decane di (meth) acrylate, pentaerythritol tetra (meth) acrylate, trimethylolpropane tri (meth) acrylate and polyfunctional urethane (meth) acrylate are preferred, especially in terms of viscosity. It is preferable to use (meth) acrylate and polyfunctional urethane (meth) acrylate together. Such polyfunctional urethane (meth) acrylate has a urethane bond, and can increase the surface hardness of the resin sheet and increase the strength when folded.
- the polyfunctional urethane (meth) acrylate suitably used in the present invention is obtained, for example, by reacting polyisocyanate with a hydroxyl group-containing (meth) acrylate using a catalyst such as dibutyltin dilaurate as necessary. It is preferable that
- polyisocyanate examples include aliphatic polyisocyanates such as ethylene diisocyanate and hexamethylene diisocyanate, isophorone diisocyanate, bis (isocyanatomethyl) tricyclo [5.2.1.0 2,6 ] decane, and norbornene diisocyanate.
- hydroxyl group-containing (meth) acrylate examples include, for example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 2-hydroxy-3- (meth) Examples include acryloyloxypropyl (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, and dipentaerythritol tri (meth) acrylate. These may be used alone or in combination of two or more. Of these, pentaerythritol tri (meth) acrylate and dipentaerythritol tri (meth) acrylate are preferred in terms of the surface hardness of the resin sheet.
- Polyfunctional urethane (meth) acrylate obtained by reaction of polyisocyanate and hydroxyl group-containing (meth) acrylate may be used in combination of two or more.
- acrylate compounds are preferable from the viewpoint of curing speed, and 2-9 functions, particularly 2-6 functions, are particularly preferable from the viewpoint of surface hardness and flexural modulus.
- the content ratio (weight ratio) is in terms of thermomechanical properties of the resin sheet.
- the polyfunctional (meth) acrylate / urethane (meth) acrylate (weight ratio) is preferably 95/5 to 40/60, more preferably 90/10 to 50/50, particularly 80/20 to 60/40. Preferably there is. If the content ratio of the polyfunctional urethane (meth) acrylate is too small, the surface hardness tends to decrease, and if it is too large, the water absorption rate tends to increase.
- the photocurable composition (a) used in the present invention may contain a monofunctional (meth) acrylate.
- the monofunctional (meth) acrylate include methyl (meth) acrylate and ethyl.
- alicyclic skeletons such as cyclohexyl (meth) acrylate, tricyclodecyl (meth) acrylate, tricyclodecyloxymethyl (meth) acrylate, isobornyl (meth) acrylate, norbornyl (meth) acrylate, and adamantyl (meth) acrylate (Meth) acrylate is preferred in terms of low cure shrinkage.
- the content thereof is 50% in terms of heat resistance with respect to 100 parts by weight of the polyfunctional (meth) acrylate compound.
- the amount is preferably 30 parts by weight or less, more preferably 30 parts by weight or less, and particularly preferably 10 parts by weight or less. If the content is too large, the heat resistance tends to decrease.
- the photopolymerization initiator (a2) used in the present invention is not particularly limited as long as it can generate radicals by irradiation with active energy rays, and various photopolymerization initiators can be used.
- examples include benzophenone, benzoin methyl ether, benzoin propyl ether, diethoxyacetophenone, 1-hydroxycyclohexyl phenyl ketone, 2,6-dimethylbenzoyl diphenylphosphine oxide, 2,4,6-trimethylbenzoyl diphenylphosphine oxide, and the like.
- photopolymerization initiators such as 1-hydroxycyclohexyl phenyl ketone and 2,4,6-trimethylbenzoyldiphenylphosphine oxide are particularly preferable. These photopolymerization initiators may be used alone or in combination of two or more.
- photopolymerization initiators (a2) are polyfunctional (meth) acrylate compounds (a1) (when monofunctional (meth) acrylates are contained, polyfunctional (meth) acrylate compounds (a1) and monofunctional ( It is preferably used in a proportion of usually 0.1 to 10 parts by weight, more preferably 0.2 to 5 parts by weight, particularly 0.2 to 3 parts by weight, based on 100 parts by weight of the total of (meth) acrylate. Is preferred. If the amount used is too small, the polymerization rate tends to decrease and polymerization does not proceed sufficiently. If the amount is too large, the light transmittance of the resulting resin sheet tends to decrease (yellowing).
- thermal polymerization initiator may be used in combination with the photopolymerization initiator (a2).
- known compounds can be used, such as hydroperoxide, t-butyl hydroperoxide, diisopropylbenzene hydroperoxide, 1,1,3,3-tetramethylbutyl hydroperoxide, and the like.
- Hydroperoxides dialkyl peroxides such as di-t-butyl peroxide and dicumyl peroxide, t-butyl peroxybenzoates, peroxyesters such as t-butylperoxy (2-ethylhexanoate), benzoyl Examples include peroxides such as diacyl peroxides such as peroxides, peroxycarbonates such as diisopropylperoxycarbonate, peroxyketals, and ketone peroxides. These may be used alone or in combination of two or more.
- the photocurable composition (a) used in the present invention includes a chain transfer agent, an oxidation agent, as appropriate. You may contain auxiliary components, such as an inhibitor, a ultraviolet absorber, a thickener, an antistatic agent, a flame retardant, an antifoamer, a coloring agent, and various fillers.
- chain transfer agent examples include polyfunctional mercaptan compounds such as pentaerythritol tetrakisthioglycolate and pentaerythritol tetrakisthiopropionate. These may be used alone or in combination of two or more. These polyfunctional mercaptan compounds are preferably used at a ratio of usually 10 parts by weight or less, more preferably 5 parts by weight or less, particularly 100 parts by weight of the polyfunctional (meth) acrylate compound (a1). Is preferably 3 parts by weight or less. When there is too much this usage-amount, there exists a tendency for the heat resistance and rigidity of the resin sheet obtained to fall.
- polyfunctional mercaptan compounds such as pentaerythritol tetrakisthioglycolate and pentaerythritol tetrakisthiopropionate. These may be used alone or in combination of two or more. These polyfunctional mercaptan compounds are preferably used at a ratio
- antioxidants examples include 2,6-di-t-butylphenol, 2,6-di-t-butyl-p-cresol, 2,4,6-tri-t-butylphenol, and 2,6-di- t-butyl-4-s-butylphenol, 2,6-di-t-butyl-4-hydroxymethylphenol, n-octadecyl- ⁇ - (4′-hydroxy-3 ′, 5′-di-t-butylphenyl) ) Propionate, 2,6-di-t-butyl-4- (N, N-dimethylaminomethyl) phenol, 3,5-di-t-butyl-4-hydroxybenzylphosphonate-diethyl ester, 2,4 -Bis (n-octylthio) -6- (4-hydroxy-3 ', 5'-di-t-butylanilino) -1,3,5-triazine, 4,4-methylene-bis (2,6-di-)
- the ultraviolet absorber is not particularly limited as long as it is soluble in the photocurable composition (a), and various ultraviolet absorbers can be used. Specific examples include salicylic acid ester, benzophenone, triazole, hydroxybenzoate, and cyanoacrylate. These ultraviolet absorbers may be used alone or in combination. Among these, in terms of compatibility with the photocurable composition (a), benzophenone or triazole, specifically, (2-hydroxy-4-octyloxy-phenyl) -phenyl-methanone, 2-benzo UV absorbers such as triazol-2-yl-4-tert-octyl-phenol are preferred.
- the content of the ultraviolet absorber is usually preferably 0.001 to 1% by weight, particularly preferably 0.01 to 0.1% by weight, based on the photocurable composition (a). If the amount of the ultraviolet absorber is too small, the light resistance of the resin sheet tends to decrease, and if it is too large, the light transmittance of the resin sheet tends to decrease.
- the photocurable composition (a) obtained above is cured (crosslinked) to obtain a transparent resin sheet. It is also possible to further heat cure after photocuring.
- the photocuring will be described. However, it is not limited to the following method.
- the photocurable composition (a) is filled in a void of a mold composed of two flat plates at least one of which is transparent and a spacer for controlling the thickness.
- a glass plate is particularly preferable.
- the glass plate preferably has a thickness of 1 to 10 mm from the viewpoint of the strength of the mold, and more preferably, from the viewpoint of the surface smoothness of the resin sheet, at least one glass surface in contact with the photocurable composition (a) is optical. It is preferably polished. In particular, the surface roughness Ra is preferably 50 nm or less.
- the glass plate may be chemically strengthened from the viewpoint of such strength. If the glass plate is too thick, the weight of the glass increases and the load on the equipment increases. In order to improve the demoldability of the resin sheet, the surface of the glass plate may be treated with a release agent.
- fine irregularities may be formed on the surface of the flat plate in contact with the photocurable composition (a).
- a resin sheet having a lens function, an antiglare function, or an anti-Newton ring function can be obtained.
- the spacer controls the thickness of the resin sheet, but the material is not particularly limited, and a known material such as a resin is used. Among the resins, rubbery materials such as silicon resin are preferable.
- a light source to be used a general ultraviolet lamp can be used, but a low-pressure mercury lamp, a high-pressure mercury lamp, a metal halide lamp, a xenon lamp, an LED lamp, etc. are used because of the availability and price of the irradiation device. .
- the amount of irradiation light is preferably 0.1 to 100 J / cm 2 , more preferably 1 to 50 J / cm 2 , still more preferably 2 to 30 J / cm 2 , and particularly preferably 3 to 20 J / cm 2 . If the amount of irradiation light is too small, curing tends not to proceed sufficiently, and if too much, the resin sheet tends to yellow.
- the illuminance is preferably 10 to 100,000 mw / cm 2 , more preferably 50 to 10,000 mw / cm 2 in terms of fast light curing, and even more preferably 100 to 1000 mw / cm 2 in terms of curing to the inside of the resin sheet. 2 .
- Light irradiation can be performed from one side or both sides. It is also possible to divide it into multiple times.
- the thickness of the resin sheet of the present invention is 0.1 to 1 mm (excluding the band-like depression).
- the thickness is preferably 0.1 to 0.5 mm, more preferably 0.12 to 0.5 mm, and particularly preferably 0.15 to 0.3 mm. If the thickness is too thin, the rigidity of the display substrate tends to decrease, and if it is too thick, it tends to be difficult to reduce the weight and thickness of the display.
- the pencil hardness of the resin sheet of the present invention is 3H or more. Preferably it is 5H or more, Most preferably, it is 6H or more. If the pencil hardness is too low, the surface hardness as the protective plate tends to decrease.
- a method of appropriately controlling the kind of the above-described photocurable composition (a) and the content of the components can be used.
- a polyfunctional (meth) acrylate compound (a1), particularly a polyfunctional urethane (meth) acrylate having 3 to 6 functional groups may be used.
- the upper limit of pencil hardness is usually 10H.
- the greatest feature of the present invention is that at least one band-like depression for folding the resin sheet is formed on one side or both sides in one direction within the plane.
- Examples of the arrangement of the band-like depressions include the following cases (1) to (6). (1) Only one on the resin sheet surface (see FIGS. 1 and 7) (2) Two on the resin sheet surface (see Fig. 2) (3) Three on the resin sheet surface (see Fig. 3) (4) One piece at the same position on one side and the other side of the resin sheet (see FIGS. 4 and 8) (5) One by one in a form perpendicular to one side and the other side of the resin sheet (see FIGS. 5 and 9) (6) Two or more on one side and the other side of the resin sheet (see FIGS. 6 and 10)
- Case (1) corresponds to a display that can be folded at the center of the surface (see FIGS. 12 and 13). Cases (2) and (4) can be folded more smoothly.
- the case (3) corresponds to a display that can be folded at both ends.
- Case (5) corresponds to a display that can be folded vertically or horizontally.
- Case (6) corresponds to a display that can be wound.
- the case (1) to (3) formed only on one side is preferable from the viewpoint of the smoothness of the outermost surface of the display, and the case (1) is more preferable because of ease of manufacturing.
- the thickness T (mm) of the resin sheet and the depth D (mm) of the band-shaped depression (when formed in the same place on both sides as shown in FIG. Further, it is preferable that the depth D is the depth of the deepest place in the cross section of the belt-like depression) and the width W (mm) of the belt-like depression satisfies the following conditions (1) and (2). (1) 0.05 ⁇ (TD) ⁇ 0.2 (2) 0.5 ⁇ W ⁇ 50
- the shape of the belt-like depression can be observed with a laser microscope equipped with a three-dimensional shape measurement function.
- the shape of the belt-shaped recess satisfies the following condition (3).
- the width W of the band-shaped depression need not be uniform and may be in the above-described range. When a plurality of band-shaped depressions are formed in the resin sheet surface, each width W may be different. Further, the band-shaped depression need not be strictly a straight line and may meander in a range of several mm or less.
- the shape of the belt-like recess satisfies the following condition (I) in terms of foldability. It is preferable. (I) 0.2 ⁇ T ⁇ D ⁇ 0.8 ⁇ T More preferably, the following condition (I ′) is satisfied. (I ′) 0.3 ⁇ T ⁇ D ⁇ 0.7 ⁇ T Particularly preferred is the following condition (I ′′). (I ′′) 0.35 ⁇ T ⁇ D ⁇ 0.65 ⁇ T
- the depth D (mm) of the band-shaped depression is the depth of the deepest place in the section of the band-shaped depression.
- the depth D may be different, but the depth D in the band direction in the band-like depression is preferably uniform.
- Deflection ⁇ D (mm) of the depth D is obtained by measuring the cross-sectional shape of the band-shaped depression along the band direction, and from the obtained maximum depth Dmax (mm) and minimum depth Dmin (mm), Desired.
- Depth deflection ⁇ D (mm) Dmax (mm)-Dmin (mm)
- the depth deflection ⁇ D (mm) is preferably 0.05 mm or less. More preferably, it is 0.03 mm or less, Most preferably, it is 0.02 mm or less.
- the depth deviation ⁇ D (mm) increases, the foldability tends to decrease.
- the laser is accurately focused, the laser oscillator and the mirror are moved smoothly during processing, and the level of the work (resin sheet) installation table is increased. And improving the flatness and thickness accuracy of the resin sheet.
- both ends of the band-shaped depression need not be vertically cut, and it is preferable that the band-shaped depression is gently inclined from the center to the original surface layer.
- the boundary of each step is inclined gently.
- the width W of the belt-like depression is a distance between two points at which the depression starts.
- examples of the method for forming the band-like depression include mold transfer, NC processing, sand blasting, water jet, laser ablation, etc.
- NC processing and laser ablation are preferable from the viewpoint of productivity.
- Laser ablation is more preferable from the viewpoint of foldability, and laser ablation is more preferable from the viewpoint of energy efficiency, more preferably from an infrared laser, especially an infrared laser having a wavelength of 9 to 11 ⁇ m. Particularly preferable is the availability of the apparatus. Then, laser ablation using a carbon dioxide laser with a wavelength of 9.3 ⁇ m or 10.6 ⁇ m.
- the carbon dioxide laser is not particularly limited as long as it is a commercially available apparatus, but the ablation of the crosslinked resin is carried out using a laser output of 10 to 100 W while adjusting the laser irradiation conditions according to the composition of the crosslinked resin.
- recommended laser irradiation conditions are as follows.
- Laser output 20-60W (Duty: 10-90%)
- Laser focal length 10-100mm
- Laser spot diameter 0.05 to 0.3 mm
- Irradiation speed 50 to 200 mm / sec
- Irradiation pitch 0.05 to 0.3 mm
- the laser spot diameter means a diameter, and the same applies to the following.
- Duty is the output efficiency (%), and is a numerical value representing the percentage of the laser beam emitted toward the workpiece when the output of the laser body is 100%.
- Such duty can be set by an output setting device mounted as a standard function on a normal laser irradiation machine. For example, when the duty is set to 10% with a laser irradiator having a laser output of 50 W, an output of 5 W can be obtained.
- the laser focal length is a value determined by the condenser lens attached to the laser irradiation machine.
- the work (resin sheet) surface is usually set at the focal length to perform ablation processing.
- the focal position of the laser beam is shifted in the range of 0.5 to 10 mm upward or downward from the irradiation surface of the resin sheet.
- the thickness is preferably 0.7 to 5 mm, more preferably 1 to 3 mm. Since the laser spot diameter (irradiation area) irradiated to the workpiece is expanded by such defocusing, laser irradiation in the defocused state is an advantageous method when forming a wide band-shaped depression.
- the relationship between the laser spot diameter (R) and the pitch (P) is preferably the following formula. 0.1 ⁇ P / R ⁇ 1 More preferably, 0.2 ⁇ P / R ⁇ 0.8 Particularly preferably, 0.3 ⁇ P / R ⁇ 0.7 It is.
- the laser output X (W) is large, it is necessary to adjust the irradiation energy by decreasing the duty Y (%) or increasing the irradiation speed (mm / second).
- the optimum irradiation energy depends on the shape of the band-shaped depression, but the irradiation energy needs to be increased as the depth D of the band-shaped depression increases.
- the laser beam scanning mechanism may move the laser oscillator itself, or the irradiation position may be moved using a plurality of reflection mirrors.
- the stage on which the workpiece (resin sheet) is installed may be moved with the laser fixed.
- a plurality of lasers may be installed to form a plurality of band-like depressions at once on a large-area work (resin sheet).
- the depth D (mm) of the band-like depression can be controlled by adjusting the duty (%) and the irradiation speed, but from the viewpoint of productivity, the irradiation speed is set to the duty ( %) Is preferably adjusted.
- the width W (mm) of the band-like depression can be controlled by lens specifications such as defocusing the laser beam or diffusing widely by a cylindrical lens or a diffraction grating. From the point of controlling the shape of the linear depression described later, It is preferable to control by irradiating a plurality of times while gradually shifting the position of laser irradiation. That is, it is preferable to set the irradiation pitch and scan the laser a plurality of times.
- a plurality of linear depressions are further formed in the belt-like depression in view of reducing the radius of curvature (see FIG. 11). More preferably, the depth d (mm) and the width w (mm) of the linear depression satisfy the following conditions (4) and (5). (4) 0.001 ⁇ d ⁇ 0.05 (5) 0.01 ⁇ w ⁇ 0.5
- the depth d and width w of the linear depression need not be uniform and may be in the above-described range. When a plurality of linear depressions are formed in the band-like depression, each of the depth d and the width w may be different. Further, the linear recess need not be strictly a straight line, and may be meandering within a range of 1 mm or less.
- the depth d (mm) of the linear depression can be controlled by adjusting the laser irradiation pitch together with the laser irradiation conditions described above. That is, it becomes flat if the irradiation pitch is shortened, and conversely, it can be deepened if the irradiation pitch is long.
- the width w (mm) of the linear depression can be controlled by adjusting the laser spot diameter, it is preferable to control it by adjusting the irradiation pitch as well as the depth.
- a laser beam may be divided into two or more beams by a diffraction grating to form a plurality of linear depressions at a time.
- the laser duty is set to 100%, and the laser light emitted from the transmitter is divided into 10 beams by the diffraction grating (each beam corresponds to a duty of 10%).
- the number of divisions is preferably 2 to 20 if it is one-dimensional. It is also possible to divide into two dimensions.
- the plurality of divided laser beams can be converted into parallel beams by attaching a condenser lens. In this case, the division pitch is preferably 0.1 to 1 mm.
- the resin sheets of the present invention may be manufactured one by one, but after forming a band-like depression in a long original fabric or a wide original fabric, it can be cut into a desired size and multi-faceted.
- a belt-shaped depression is continuously formed by irradiating a laser beam from a fixed laser device at the center of a long raw material to be conveyed, and then cut perpendicularly to the conveying direction. do it. If necessary, it is also possible to take up the raw material before cutting.
- the cleaning method include known methods such as brushing, showering, rinsing, and dipping.
- the dip method is preferable in that the entire resin sheet can be washed, more preferably the dip method using an organic solvent, and more preferably the dip method is more preferable in terms of removing the laser decomposition product deposited in the indentation.
- Sonic cleaning is preferred. Particularly preferred is dip-type ultrasonic cleaning using a polar solvent such as 1-acetoxypropane, acetone or isopropyl alcohol as the organic solvent.
- the foldable resin sheet of the present invention is obtained.
- the radius of curvature (bendable radius) of the folded portion when the resin sheet is folded satisfies 3 mm or less, more preferably 2 mm or less, particularly Preferably it is 1 mm or less. If the radius of curvature is too large, the foldability tends to decrease.
- the lower limit of the radius of curvature is usually 0.1 mm.
- the light transmittance of the resin sheet of the present invention is preferably 85% or more, more preferably 88% or more, and particularly preferably 90% or more. If the light transmittance is too small, the brightness of the display tends to decrease.
- the upper limit of the light transmittance is usually 99%.
- the surface roughness Ra of the resin sheet of the present invention is preferably 20 nm or less, more preferably 15 nm or less, and particularly preferably 10 nm or less. If the surface roughness Ra is too large, the protective plate loses a high-class feeling, and the electrode substrate and the touch panel substrate tend to crack the conductive film.
- the lower limit of the surface roughness Ra is usually 1 nm.
- the glass transition temperature of the resin sheet of the present invention is preferably 150 ° C. or higher from the viewpoint of heat resistance.
- a preferable range of the glass transition temperature is 180 to 400 ° C, particularly preferably 200 to 300 ° C.
- a method of appropriately controlling the kind of the above-described photocurable composition (a) and the content of the components can be mentioned.
- the technique of raising the functional group number of a polyfunctional (meth) acrylate type compound (a1) is mentioned.
- the bending elastic modulus of the resin sheet of the present invention is preferably 3 to 5 GPa. More preferably, it is 3.5 to 4.5 GPa. If the flexural modulus is too low, it tends to be difficult to maintain the shape of the display. On the other hand, if the flexural modulus is too high, the foldability is lowered and cracks tend to occur during processing.
- a method of appropriately controlling the type of the photocurable composition (a) and the content of the components described above can be used.
- polyfunctional (meth) acrylate compounds (a1) in particular, those having 2 to 6 functionalities as urethane (meth) acrylate may be used.
- a resin sheet [II] that is flat on both sides can be obtained by filling a band-like depression for folding the resin sheet with a transparent resin, particularly a crosslinked resin (B) ( (See FIG. 14).
- a transparent resin particularly a crosslinked resin (B) (See FIG. 14).
- the method of filling with a transparent resin include die coating, dip coating, spin coating, spray coating, bar coating, screen printing, and ink jet.
- the refractive index of such a transparent resin is preferably the same as that of the resin sheet from the viewpoint of reducing the interface reflection between the resin and the band-shaped depression.
- the belt-like depression for folding the resin sheet is a resin sheet filled with a resin having the same refractive index as that of the resin sheet, particularly a crosslinked resin (B).
- a resin sheet in which the resin is not filled in the belt-like depression may be referred to as a resin sheet [I]
- a resin sheet in which the belt-like depression is filled with a resin may be referred to as a resin sheet [II].
- [I] and [II] are not attached, it may mean a general term for the resin sheets [I] and [II].
- the same refractive index means that the refractive index difference between the resin sheet and the transparent resin is within ⁇ 0.1.
- the refractive index difference is preferably within ⁇ 0.01, particularly preferably the refractive index difference is within ⁇ 0.005.
- the glass transition temperature of the transparent resin is usually 150 ° C. or lower, preferably 100 ° C. or lower, more preferably 80 ° C. or lower. In general, the lower limit is ⁇ 100 ° C. If the glass transition temperature is too high, the folding property tends to be lowered.
- the resin examples include a urethane resin, a silicon resin, an acrylic resin, a light and / or a thermosetting resin, and the crosslinked resin (B) is preferable in terms of simplicity of the embedding process, and the crosslinked resin (B).
- a photocurable resin is preferable from the viewpoint of productivity.
- the band-shaped depression can be filled with the liquid photocurable composition (b), and can be planarized by photocuring.
- only the belt-like depression may be filled with resin, or the belt-like depression and its periphery, or the entire surface having the belt-like depression may be covered with resin.
- there are a method of applying a resin amount corresponding to the volume of the belt-shaped indentation, a method of removing resin with a squeegee etc. after applying resin to the belt-shaped recess and its periphery, etc. Can be mentioned.
- the photocurable composition (b) is not particularly limited and can be appropriately selected from those described in the description of the photocurable composition (a). Particularly preferred is a (meth) acrylic composition comprising a polyfunctional (meth) acrylate compound (a1) and a photopolymerization initiator (a2), and more preferred is polyfunctional (
- the meth) acrylate compound (a1) is a polyfunctional urethane (meth) acrylate compound, more preferably a monofunctional (meth) acrylate compound, and particularly preferably butyl (meth) acrylate. It is preferable that an aliphatic (meth) acrylate having 1 to 20 carbon atoms in the alkyl group such as the above is included from the viewpoint of improving the adhesion to the band-like depression.
- butyl (meth) acrylate When butyl (meth) acrylate is contained, the content of butyl (meth) acrylate is preferably 10 to 100 parts by weight when the polyfunctional (meth) acrylate compound (a1) is 100 parts by weight.
- the photocurable composition (b) preferably contains the same photopolymerization initiator as described above.
- the refractive index of the photocurable composition (b) is blended with a fluorinated alkyl group-containing monomer in the case of lowering the refractive index, and conversely, in the case of increasing the refractive index, an aromatic ring-containing monomer or sulfur-containing monomer is used. It can be adjusted by blending. Moreover, it can adjust also by mix
- the radius of curvature (bendable radius) of the folded portion when folded is 3 mm or less, more preferably 2 mm or less, and particularly preferably 1 mm or less. If the radius of curvature is too large, the foldability tends to decrease.
- the lower limit of the radius of curvature is usually 0.1 mm.
- the resin sheet with the pressure-sensitive adhesive layer in which the pressure-sensitive adhesive layer is formed on one side of the resin sheet [I] or the resin sheet [II] can be bonded to the internal device.
- the pressure-sensitive adhesive layer is preferably formed on one side of the resin sheet, and in the case of a surface having a band-shaped depression, the band-shaped depression is filled with the pressure-sensitive adhesive, and the pressure-sensitive adhesive composition is applied to a portion other than the band-shaped depression, It is preferable to form an adhesive layer (see FIG. 15). From this point, it is preferable that the refractive index of the adhesive also coincides with the refractive index of the resin sheet [I].
- an adhesive for example, an adhesive made of an acrylic resin and a crosslinking agent or an adhesive made of a photocurable composition can be used.
- the resin sheet of the present invention can be bonded to another resin sheet [ ⁇ ] using an adhesive or an adhesive, or after the original resin sheet is bonded to the resin sheet [ ⁇ ]. It is also possible to form a band-like depression.
- the resin sheet [ ⁇ ] is preferably a sheet made of a thermoplastic resin.
- the thermoplastic resin include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polymethyl methacrylate (PMMA), polystyrene (PS), polyimide (PI), cycloolefin polymer (COP), Examples thereof include cycloolefin copolymer (COC) and triacetyl cellulose (TAC).
- a resin sheet made of the crosslinked resin (A) may be formed on the resin sheet [ ⁇ ]
- a band-shaped depression may be formed on the resin sheet side of the laminate made of the resin sheet [ ⁇ ] / resin sheet. .
- the resin sheet of the present invention can be cut to a desired size by a known method such as laser cutting, CNC cutting, punching cutting, ultrasonic cutting, water jet cutting, scribe cutting, router cutting, dicing cutting.
- the embedding process and the formation of the pressure-sensitive adhesive layer with a transparent resin, in particular the crosslinked resin (B), are performed immediately after laser ablation or after cleaning the band-like indentation in terms of adhesion. It is preferable to carry out.
- the time is within a few days, more preferably within a few hours, and particularly preferably within a few minutes.
- the improvement in adhesion is presumed to be caused by a chemical reaction between the surface of the band-like dent activated by laser ablation and the resin or adhesive.
- a hard coat layer, a printing layer, a gas barrier film, and a transparent conductive film can be formed on the resin sheet of the present invention according to various uses.
- Transparent conductive films include inorganic films such as indium and tin oxide (ITO), indium / gallium // zinc oxide (IGZO), and poly (3,4-ethylenedioxythiophene) (PEDOT).
- ITO indium and tin oxide
- IGZO indium / gallium // zinc oxide
- PEDOT poly (3,4-ethylenedioxythiophene)
- An organic film is mentioned.
- an ITO film is preferable in terms of conductivity and transparency.
- the film thickness of such a transparent conductive film is usually 100 to 5000 mm, preferably 200 to 3000 mm, more preferably 300 to 2000 mm. If the film thickness is too thick, the substrate tends to swell, and if it is too thin, the conductivity tends to be insufficient.
- the film forming temperature is preferably 50 to 300 ° C., more preferably 100 to 250 ° C., and still more preferably 130 to 200 ° C. If the film forming temperature is too low, the conductivity tends to be insufficient. Conversely, if the film forming temperature is too high, the light transmittance of the resin sheet tends to decrease.
- the resistance value of the transparent conductive film obtained is preferably 500 ⁇ / ⁇ or less, more preferably 200 ⁇ / ⁇ or less, and even more preferably 100 ⁇ / ⁇ or less. If it is too high, the display performance of the display tends to deteriorate.
- the resin sheet of the present invention can be produced with high productivity, and the obtained resin sheet is not only foldable, but also excellent in optical characteristics and thermomechanical characteristics, a protective plate for display and lighting, and an electrode substrate Suitable as a touch panel substrate.
- Pencil hardness According to JIS K-5600, the pencil hardness of the flat surface of a resin sheet of 50 mm ⁇ 100 mm was measured.
- Light transmittance (%) A 50 mm ⁇ 50 mm test piece was cut out from a 150 mm ⁇ 150 mm resin sheet, attached to a metal frame so as to be flat, and then the total light transmittance (%) was measured with a haze meter “NDH-2000” manufactured by Nippon Denshoku Co., Ltd. It was measured.
- Resin sheet (S1) 0.2 mm thick resin sheet (“ORGA LT” manufactured by Nippon Synthetic Chemical Industry Co., Ltd., pencil hardness 7H, light transmittance 92%, surface roughness Ra 7 nm, flexural modulus 4 GPa, glass transition temperature 250 ° C)
- Resin sheet (S2) Resin sheet having a thickness of 0.2 mm (“ORGA DX” manufactured by Nippon Synthetic Chemical Industry Co., Ltd., pencil hardness 3H, light transmittance 92%, surface roughness Ra 7 nm, bending elastic modulus 3 GPa, glass transition temperature 200 ° C)
- Resin sheet (S3) PET sheet having a thickness of 0.1 mm, pencil hardness 3H, light transmittance 88%, surface roughness Ra 15 nm, bending elastic modulus 3 GPa, glass transition temperature 120 ° C.)
- Laser system Protech carbon dioxide laser "LP-200A" (wavelength 10.6 ⁇ m) Laser output: 50W (Duty: 13.6%) Laser focal length: 38mm Laser spot diameter: 0.15 mm Irradiation speed: 80 mm / sec Irradiation pitch: 0.1 mm Number of irradiations: 10 times
- the resin sheet was ultrasonically cleaned by a dipping method using 1-acetoxypropane as an organic solvent. Observation of the shape of the band-like depression and the linear depression of the obtained resin sheet [I] was as follows.
- the curvature radius of the folding part of the obtained resin sheet [I] was 3 mm (diameter 6 mm), and had good folding properties.
- the obtained resin sheet [II] had a bendable radius of curvature of 2 mm (diameter 4 mm), and had good foldability. Further, since the refractive index of the crosslinked resin (B) is close to the refractive index of 1.52 of the resin sheet (S1), the band-shaped indented portion was hardly visible.
- the obtained resin sheet [II] had a bendable radius of curvature of 2 mm (diameter 4 mm), and had good foldability. Moreover, since the refractive index of the crosslinked resin (B) is the same as the refractive index 1.52 of the resin sheet (S1), the band-shaped indentation portion was not visible.
- the band-like depression of the obtained resin sheet with the pressure-sensitive adhesive layer was flattened, and when the surface was bonded to a commercially available touch panel, there was no bubble and good bonding properties were obtained. Furthermore, reworkability is also good, and it is useful as a protective plate with an adhesive layer.
- a transparent conductive film made of ITO having a thickness of 300 mm was formed by sputtering at 180 ° C. on the surface opposite to the band-shaped depression of the resin sheet [I] obtained above, and a substrate with a transparent conductive film was obtained.
- the surface resistance value was 100 ⁇ / ⁇ , which was good.
- Example 2 Resin sheet [I] was obtained in the same manner as in Example 1 except that the number of irradiations was 20 and the width W of the band-like depression was 2 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 3 Resin sheet [I] was obtained in the same manner as in Example 1, except that the number of irradiations was 40 and the width W of the band-like depression was 4 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 4 Resin sheet [I] was obtained in the same manner as in Example 1, except that the number of irradiations was 60 and the width W of the band-shaped depression was 6 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 5 Resin sheet [I] was obtained in the same manner as in Example 1, except that the number of irradiations was 80 and the width W of the band-shaped depression was 8 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 6 Resin sheet [I] was obtained in the same manner as in Example 1, except that the number of irradiations was set to 100 and the width W of the belt-like depression was set to 10 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 7 Resin sheet [I] was obtained in the same manner as in Example 1 except that the duty was 14%, the number of irradiations was 20 times, the depth D of the band-like depression was 0.09 mm, and the width W was 2 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Resin sheet [I] was obtained in the same manner as in Example 1 except that the duty was 14.5%, the number of irradiations was 20 times, the depth D of the belt-like depression was 0.1 mm, and the width W was 2 mm. It was.
- Resin sheet [I] was obtained in the same manner as in Example 1, except that the duty was 15%, the number of irradiations was 20, the depth D of the band-like depression was 0.11 mm, and the width W was 2 mm.
- Example 10 ⁇ Example 10> In Example 1, except that a resin sheet having a thickness of 0.15 mm (only the thickness of the resin sheet (S1) was adjusted) was used, and the number of irradiations was 20 times, and the width W of the belt-like depression was set to 2 mm. Similarly, resin sheet [I] was obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 11 In Example 1, the irradiation speed was 240 mm / second, the irradiation pitch was 0.05 mm, the number of irradiations was 40 times, the depth D of the belt-like depression was 0.15 mm, the width W was 2 mm, and the depth d of the linear depression. was less than 0.01 mm and the width w was 0.05 mm, to obtain a resin sheet [I]. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 12 In Example 1, the irradiation pitch was 0.15 mm, the number of irradiations was 12 times, the depth D of the belt-like recess was 0.05 mm, the width W was 2 mm, the depth d of the linear recess was 0.05 mm, and the width w Resin sheet [I] was obtained in the same manner except that the thickness was 0.15 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1. The effect of linear depression was developed, and the radius of curvature was reduced.
- Example 13 In Example 1, using a resin sheet having a thickness of 0.3 mm (only the thickness of the resin sheet (S1) was adjusted), the duty D was 19%, the number of irradiations was 20 times, and the depth D of the belt-like depression was 0. Resin sheet [I] was obtained in the same manner except that the width W was set to 2 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 14 Resin sheet [I] was obtained in the same manner as in Example 1, except that the resin sheet (S2) was used, the number of irradiations was 20 times, and the width W of the belt-like depression was 2 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 15 In Example 1, the duty is 22%, the irradiation speed is 400 mm / second, the number of times of irradiation is 20 times, the depth D of the belt-like depression is 0.05 mm, the width W is 2 mm, and the depth d of the linear depression is 0.03 mm. Except that, resin sheet [I] was obtained in the same manner. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 16 In Example 1, using the following laser apparatus and laser irradiation conditions, resin sheet [I] was obtained in the same manner except that the indentation was changed to the following shape. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Laser device Laser processing machine “L706PCU” manufactured by Iida Kogyo Co., Ltd. (wavelength: 9.3 ⁇ m) Laser output: 20W (Duty: 30%) Laser focal length: 38mm Laser spot diameter: 0.15 mm Irradiation speed: 300 mm / sec Irradiation pitch: 0.1 mm Irradiation frequency: 20 times Depth of band-like depression D: 0.16 mm Band width W: 2mm Depth of linear depression d: 0.16mm The width w of the belt-like depression: 0.1 mm Depth deflection ⁇ D: ⁇ 0.01mm
- Example 17 In Example 16, except that the duty is 10%, the number of irradiations is 40 times, the depth D of the belt-like depression is 0.05 mm, the width W is 4 mm, and the depth d of the linear depression is 0.05 mm, Resin sheet [I] was obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 18 Resin sheet [I] was obtained in the same manner as in Example 16 except that the number of irradiations was 40, and the width W of the band-like depression was 4 mm. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 19 In Example 16, in the same manner except that the workpiece (resin sheet surface) was defocused 1 mm away from the laser focus, the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. Obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 20 In Example 16, in the same manner except that the workpiece (resin sheet surface) was defocused 1 mm away from the laser focus, the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. Obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 21 In Example 16, in the same manner except that the workpiece (resin sheet surface) was defocused 1 mm away from the laser focus, the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. Obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 22 In Example 16, in the same manner except that the workpiece (resin sheet surface) was defocused 1 mm away from the laser focus, the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. Obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 23 In Example 16, in the same manner as in the defocused state in which the workpiece (resin sheet surface) is separated from the laser focal point by 1.5 mm, the laser irradiation is changed to the following conditions, and the indentation is changed to the following shape. ] was obtained.
- the belt-like dent of this embodiment has a stepped shape as shown in FIG.
- the obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- irradiation was continued under the following conditions after 20 times of irradiation.
- irradiation was continued under the following conditions after a total of 80 irradiations.
- Example 24 In Example 16, with the workpiece (resin sheet surface) in a defocused state 5 mm away from the laser focus, the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. Obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 25 ⁇ Example 25>
- a cylindrical lens was attached to the laser device so that the laser beam was diffused broadly (see FIG. 17), the laser irradiation was changed to the following conditions, and the indentation was changed to the following shape. I] was obtained.
- the obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 26 ⁇ Example 26>
- a diffraction grating (branch DOE “DBS001” manufactured by Sumitomo Electric Industries, Ltd.) and a condenser lens are attached to a laser device to divide the laser light into eight parallel beams (division pitch 0.5 mm) (FIG. 18), the laser irradiation was changed to the following conditions, and the resin sheet [I] was obtained in the same manner except that the belt-like depression was changed to the following shape. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 27 In Example 1, in the same manner except that one belt-like depression is formed on both sides of the belt-like depression at the center in the longitudinal direction with an interval of 1 mm and a total of three belt-like depressions are formed. Resin sheet [I] was obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 28 In Example 1, 12 belt-like recesses (the shape is the same as that of Example 1) with a gap of 3 mm are formed on both sides of the belt-like recesses in the center in the longitudinal direction, and a total of 25 belt-like recesses are formed. Resin sheet [I] was obtained in the same manner except that the depressions were formed. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 29> In Example 1, the duty is set to 12.6%, the depth D of the belt-like depression is 0.05 mm, and the same is performed except that the belt-like depression is formed not only in the center in the long side direction but also in the center in the short side direction. Resin sheet [I] was thus obtained. The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 30 In Example 1, except that the duty is 12.6%, the depth D of the belt-like depression is 0.05 mm, and the belt-like depression is formed not only at the center in the long side direction but also at the center in the short side direction of the back surface. Similarly, resin sheet [I] was obtained (see FIG. 5). The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 31 a resin sheet [I] is obtained in the same manner except that the duty is 12.6%, the depth D of the belt-like depression is 0.05 mm, and the belt-like depression is formed at the center in the longitudinal direction of the back surface. (See FIG. 4). The obtained resin sheet [I] was evaluated in the same manner as in Example 1.
- Example 33 On the surface of the resin sheet (S1), a band-like depression shown in the table was formed by NC processing to obtain a resin sheet [I]. There is no linear depression in the obtained resin sheet [I].
- ⁇ Comparative example 2> By applying a hard coat agent comprising 100 parts of urethane acrylate and 5 parts of 1-hydroxycyclohexyl phenyl ketone (“Irgacure 184” manufactured by Ciba Specialty Chemicals) on the resin sheet (S3), and photocuring with a light amount of 1J A hard coat layer having a thickness of 0.1 mm was formed (total thickness 0.2 mm). The obtained resin sheet with a hard coat had a curvature radius of 30 mm, cracked in the hard coat layer, and could not be folded.
- a hard coat agent comprising 100 parts of urethane acrylate and 5 parts of 1-hydroxycyclohexyl phenyl ketone (“Irgacure 184” manufactured by Ciba Specialty Chemicals) on the resin sheet (S3), and photocuring with a light amount of 1J A hard coat layer having a thickness of 0.1 mm was formed (total thickness 0.2 mm).
- Tables 1 to 3 show the evaluation results of the examples and comparative examples.
- a resin sheet having good foldability can be easily obtained, and the optical characteristics and mechanical characteristics of the obtained resin sheet are good, whereas in the comparative example, In either case, a foldable resin sheet could not be obtained and could not be put to practical use.
- the foldable resin sheet obtained by the present invention can be advantageously used for various optical materials and electronic materials.
- It can be used for storage / recording applications, energy applications such as thin film battery substrates and solar cell substrates, optical communication applications such as optical waveguides, functional films / sheets, and various optical films / sheets.
- it can also be used in, for example, automotive materials, building materials, medical materials, stationery, and the like.
- it is useful for applications such as a resin sheet with an adhesive layer, a protective plate for display, an electrode substrate, a touch panel substrate, a protective plate for organic EL lighting, a light guide plate, and the like.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Adhesive Tapes (AREA)
- Polymerisation Methods In General (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
即ち、本発明は、前記樹脂シートを折り畳むための帯状くぼみが、該樹脂シートの屈折率と同一の屈折率を有する架橋樹脂(B)により充填されている樹脂シートに関するものである。かかる樹脂シートとすることにより、帯状くぼみ部分に充填された架橋樹脂とそれ以外の樹脂部分とが、あたかも単一の樹脂で製造された1枚の樹脂シートで構成されたものとして提供することができる。
(a1)多官能(メタ)アクリレート系化合物
(a2)光重合開始剤
光照射は、片面もしくは両面から行うことができる。また複数回に分けて行うことも可能である。
(1)樹脂シート面に1本のみ(図1、図7参照)
(2)樹脂シート面に2本(図2参照)
(3)樹脂シート面に3本(図3参照)
(4)樹脂シートの一方の面と他方の面で同じ位置に1本ずつ(図4、図8参照)
(5)樹脂シートの一方の面と他方の面で直交する形で1本ずつ(図5、図9参照)
(6)樹脂シートの一方の面と他方の面でそれぞれ2本以上(図6、図10参照)
(1)0.05≦(T-D)≦0.2
(2)0.5≦W≦50
(1’)0.07≦(T-D)≦0.15
(2’)1≦W≦20
(1’’)0.08≦(T-D)≦0.13
(2’’)2≦W≦10
(3)20×(T-D) ≦ W ≦ 200×(T-D)
より好ましくは、下記条件(3’)であり、
(3’)15×(T-D) ≦ W ≦ 150×(T-D)
特に好ましくは下記条件(3’’)である。
(3’’)30×(T-D) ≦ W ≦ 100×(T-D)
(I)0.2×T ≦ D ≦ 0.8×T
より好ましくは、下記条件(I’)である。
(I’)0.3×T ≦ D ≦ 0.7×T
特に好ましくは下記条件(I’’)である。
(I’’)0.35×T ≦ D ≦ 0.65×T
深さのふれΔD(mm)=Dmax(mm)- Dmin(mm)
レーザー焦点距離:10~100mm
レーザースポット径:0.05~0.3mm
照射スピード:50~200mm/秒
照射ピッチ:0.05~0.3mm
なお、レーザースポット径とは、直径を意味するものであり、以下も同様である。
0.1≦P/R≦1
更に好ましくは、
0.2≦P/R≦0.8
特に好ましくは、
0.3≦P/R≦0.7
である。
(4)0.001≦d≦0.05
(5)0.01≦w≦0.5
(4’)0.003≦d≦0.015
(5’)0.03≦w≦0.3
(4’’)0.005≦d≦0.01
(5’’)0.05≦w≦0.2
透明な樹脂で埋める方法としては、ダイコート、ディップコート、スピンコート、スプレーコート、バーコート、スクリーン印刷、インクジェット等の方法が挙げられる。
かかる透明な樹脂の屈折率は樹脂シートと一致していることが、樹脂と帯状くぼみ部との界面反射を低減する点で好ましい。
かかる粘着剤として、例えば、アクリル系樹脂と架橋剤よりなる粘着剤や光硬化性組成物よりなる粘着剤を用いることができる。
更に、樹脂シート[α]の上で、架橋樹脂(A)よりなる樹脂シートを成形し、かかる樹脂シート[α]/樹脂シートよりなる積層体の樹脂シート側に帯状くぼみを形成してもよい。
得られる透明導電膜の抵抗値は、好ましくは500Ω/□以下、より好ましくは200Ω/□以下、更に好ましくは100Ω/□以下であり、高すぎるとディスプレイの表示性能が低下する傾向にある。
尚、例中「部」、「%」とあるのは、重量基準を意味する。
JIS K5600-5-1:1999 円筒形マンドレル法による耐屈曲性の試験(タイプ1の試験装置で、折り曲げ時間2秒、23℃、50%環境下で試験)に準じて、50mm×100mmの樹脂シートを、帯状くぼみ部に沿って折り曲げ(帯状くぼみが片面のみの場合は、帯状くぼみがある面を外側にした)、割れたりヒビが入らない曲率半径(mm)を1mm刻みで測定した。
50mm×100mmの樹脂シートを手で180°折り畳み、先端の帯状くぼみ部の曲率半径を約3mm(直径6mm)にする試験を繰り返し行い(帯状くぼみが片面のみの場合は、帯状くぼみがある面を外側にした)、下記の通り評価した。
○・・・1万回繰り返しても割れたりヒビが入らなかった。
△・・・1回目で割れたりヒビが入った。
×・・・1回目では割れたりヒビは入らなかったが1万回までに割れたりヒビが入った。
キーエンス社製、形状測定レーザーマイクロスコープ「VK-X110」を用いて測定した。
50mm×100mmの樹脂シートに形成された帯状くぼみの断面形状を、帯に沿って10箇所測定し、得られた最大の深さDmax(mm)と最小の深さDmin(mm)から、下記式に従って算出した。
深さのふれΔD(mm)=Dmax(mm)- Dmin(mm)
JIS K-5600に準じて、50mm×100mmの樹脂シートの平坦面の、鉛筆硬度を測定した。
150mm×150mmの樹脂シートから50mm×50mmの試験片を切り出し、平坦となるよう金枠に取り付けた後、日本電色社製、ヘイズメーター「NDH-2000」で、全光線透過率(%)を測定した。
JIS B0601:2001に準じて、東京精密社製「サーフコム570A」を用いて、樹脂シートの平坦面の表面粗さRa(nm)を測定した(カットオフ:0.8μm、測定長:1mm)。
長さ25mm×幅10mmの樹脂シートを用いて、島津製作所社製オートグラフ「AG-5kNE」(支点間距離20mm、0.5mm/分)で、平坦面の曲げ弾性率(GPa)を測定した。
長さ20mm×幅5mmの樹脂シート(平坦面)を用い、レオロジー社製動的粘弾性装置「DVE-V4型 FTレオスペクトラー」の引っ張りモードを用いて、周波数10Hz、昇温速度3℃/分、歪0.025%で測定を行い、得られた複素弾性率の実数部(貯蔵弾性率)に対する虚数部(損失弾性率)の比(tanδ)を求め、このtanδの最大ピーク温度をガラス転移温度(℃)とした。
三菱化学社製の4端子法抵抗測定器(ロレスターMP)を用いて、表面抵抗値(Ω/□)を測定した。
・樹脂シート(S1):厚さ0.2mmの樹脂シート(日本合成化学工業社製「ORGA LT」、鉛筆硬度7H、光線透過率92%、表面粗さRa7nm、曲げ弾性率4GPa、ガラス転移温度250℃)
・樹脂シート(S2):厚さ0.2mmの樹脂シート(日本合成化学工業社製「ORGA DX」、鉛筆硬度3H、光線透過率92%、表面粗さRa7nm、曲げ弾性率3GPa、ガラス転移温度200℃)
・樹脂シート(S3):厚さ0.1mmのPETシート、鉛筆硬度3H、光線透過率88%、表面粗さRa15nm、曲げ弾性率3GPa、ガラス転移温度120℃)
〔樹脂シート[I]の作製〕
樹脂シート(S1)を50mm×100mmに切断し、長手方向の中央にレーザーアブレーションにより帯状くぼみと線状くぼみを形成した。レーザー装置及びレーザー照射条件は以下のとおりである。
レーザー出力:50W(デューティー:13.6%)
レーザー焦点距離:38mm
レーザースポット径:0.15mm
照射スピード:80mm/秒
照射ピッチ:0.1mm
照射回数:10回
帯状くぼみの幅W:1mm
線状くぼみの深さd:0.01mm
帯状くぼみの幅w:0.1mm
深さのふれΔD:0.02mm
得られた樹脂シート[I]の帯状くぼみ部に、ディスペンサーを用いて、下記のウレタンアクリレート60部、ブチルアクリレート40部、1-ヒドロキシシクロヘキシルフェニルケトン(チバスペシャリティケミカルズ社製「Irgacure184」)1部よりなる光硬化性組成物(b)を、帯状くぼみが平坦になるよう塗布、充填し、スポットUV機を用いて光量1Jで光硬化を行って、両面共に平坦な樹脂シート[II]を得た。この架橋樹脂(B)の屈折率は1.49である。
温度計、撹拌機、水冷コンデンサー、窒素ガス吹き込み口を備えたフラスコに、ジシクロヘキシルメタンジイソシアナート373.0g(1.42モル)、ポリテトラメチレンエーテルグリコール(水酸基価173mgKOH/g)462.0g(0.71モル)、反応触媒としてジブチルスズジラウレート0.01gを仕込み、60℃で8時間反応させ、残存イソシアネート基が7.1%となった時点で、更に、2-ヒドロキシエチルアクリレート165.0g(1.42モル)、重合禁止剤としてハイドロキノンメチルエーテル0.01gを約1時間かけて滴下し、そのまま反応を継続し、残存イソシアネート基が0.3%以下となった時点で反応を終了し、ウレタンアクリレートを得た。
得られた樹脂シート[I]の帯状くぼみ部に、ディスペンサーを用いて、上記のウレタンアクリレート34部、ブチルアクリレート15部、ビスフェノールA骨格ジアクリレート(新中村化学工業社製、NKエステル「A-BPE-4」)51部、1-ヒドロキシシクロヘキシルフェニルケトン(チバスペシャリティケミカルズ社製、「Irgacure184」)0.5部よりなる光硬化性組成物(b)を、帯状くぼみが平坦になるよう塗布、充填し、スポットUV機を用いて光量1Jで光硬化を行って、両面共に平坦な樹脂シート[II]を得た。この架橋樹脂(B)の屈折率は1.52である。また、架橋樹脂(B)のガラス転移温度は57℃である。
上記で得られた樹脂シート[I]の帯状くぼみ面に、アクリル系樹脂(日本合成化学工業社製、「コーポニール5740」)100部と架橋剤(トリレンジイソシアネートのトリメチロールプロパンアダクト体;日本ポリウレタン社製、商品名「コロネートL」)20部からなる粘着剤組成物を、乾燥後の厚さが0.1mmとなるように塗布し、乾燥させて粘着剤層付き樹脂シートを得た。得られた粘着剤層付き樹脂シートの帯状くぼみは平坦化されており、該面を市販のタッチパネルに貼り合わせたところ、気泡が入ることもなく、良好な貼り合わせ性を有していた。更に、リワーク性も良好であり、粘着剤層付き保護板として有用である。
上記で得られた樹脂シート[I]の帯状くぼみとは逆面に、スパッタ法にて180℃で厚さ300ÅのITOよりなる透明導電膜を成膜し、透明導電膜付き基板を得たところ、表面抵抗値は100Ω/□であり良好であった。
実施例1において、照射回数を20回にして帯状くぼみの幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射回数を40回にして帯状くぼみの幅Wを4mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射回数を60回にして帯状くぼみの幅Wを6mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射回数を80回にして帯状くぼみの幅Wを8mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射回数を100回にして帯状くぼみの幅Wを10mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティーを14%、照射回数を20回にして、帯状くぼみの深さDを0.09mm、幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティーを14.5%、照射回数を20回にして、帯状くぼみの深さDを0.1mm、幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
実施例1において、デューティーを15%、照射回数を20回にして帯状くぼみの深さDを0.11mm、幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
実施例1において、厚さ0.15mmの樹脂シート(樹脂シート(S1)の厚みのみを調整した。)を用いることと、照射回数を20回にして帯状くぼみの幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射スピードを240mm/秒、照射ピッチを0.05mm、照射回数を40回にして、帯状くぼみの深さDを0.15mm、幅Wを2mm、線状くぼみの深さdを0.01mm未満、幅wを0.05mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、照射ピッチを0.15mm、照射回数を12回にして、帯状くぼみの深さDを0.05mm、幅Wを2mm、線状くぼみの深さdを0.05mm、幅wを0.15mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。線状くぼみの効果が発現し、曲率半径が小さくなった。
実施例1において、厚さ0.3mmの樹脂シート(樹脂シート(S1)の厚みのみを調整した。)を用い、デューティー19%、照射回数を20回にして、帯状くぼみの深さDを0.19mm、幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、樹脂シート(S2)を用い、照射回数を20回にして帯状くぼみの幅Wを2mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティー22%、照射スピード400mm/秒、照射回数20回とし、帯状くぼみの深さDを0.05mm、幅Wを2mm、線状くぼみの深さdを0.03mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、以下のレーザー装置及びレーザー照射条件を用いて、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザー出力:20W(デューティー:30%)
レーザー焦点距離:38mm
レーザースポット径:0.15mm
照射スピード:300mm/秒
照射ピッチ:0.1mm
照射回数:20回
帯状くぼみの深さD:0.16mm
帯状くぼみの幅W:2mm
線状くぼみの深さd:0.16mm
帯状くぼみの幅w:0.1mm
深さのふれΔD:≦0.01mm
実施例16において、デューティー10%、照射回数40回とし、帯状くぼみの深さDを0.05mm、幅Wを4mm、線状くぼみの深さdを0.05mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例16において、照射回数40回とし、帯状くぼみの幅Wを4mmとした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から1mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.17mm
照射スピード:300mm/秒
照射ピッチ:0.1mm
照射回数:40回
帯状くぼみの深さD:0.09mm
帯状くぼみの幅W:4mm
線状くぼみの深さd:0.05mm
線状くぼみの幅w:0.1mm
深さのふれΔD:≦0.01mm
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から1mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.17mm
照射スピード:265mm/秒
照射ピッチ:0.1mm
照射回数:50回
帯状くぼみの深さD:0.10mm
帯状くぼみの幅W:5mm
線状くぼみの深さd:0.03mm
線状くぼみの幅w:0.1mm
深さのふれΔD:≦0.01mm
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から1mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.17mm
照射スピード:220mm/秒
照射ピッチ:0.1mm
照射回数:50回
帯状くぼみの深さD:0.12mm
帯状くぼみの幅W:5mm
線状くぼみの深さd:0.03mm
線状くぼみの幅w:0.1mm
深さのふれΔD:≦0.01mm
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から1mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:100回
帯状くぼみの深さD:0.10mm
帯状くぼみの幅W:5mm
線状くぼみの深さd:<0.01mm
線状くぼみの幅w:0.05mm
深さのふれΔD:≦0.01mm
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から1.5mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。本実施例の帯状くぼみは、図21で示されるような段階的な形状を有するものである。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:10回
デューティー:40%
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:10回
デューティー:50%
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:60回
デューティー:40%
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:10回
デューティー:30%
レーザースポット径:0.17mm
照射スピード:450mm/秒
照射ピッチ:0.05mm
照射回数:10回
加工の順番に、
帯状くぼみの深さD1:0.13mm
帯状くぼみの幅W1:0.5mm
線状くぼみの深さd1:<0.01mm
線状くぼみの幅w1:0.05mm
深さのふれΔD1:≦0.01mm
帯状くぼみの幅W2:0.5mm
線状くぼみの深さd2:<0.01mm
線状くぼみの幅w2:0.05mm
深さのふれΔD2:≦0.01mm
帯状くぼみの幅W3:3.0mm
線状くぼみの深さd3:<0.01mm
線状くぼみの幅w3:0.05mm
深さのふれΔD3:≦0.01mm
帯状くぼみの幅W4:0.5mm
線状くぼみの深さd4:<0.01mm
線状くぼみの幅w4:0.05mm
深さのふれΔD4:≦0.01mm
帯状くぼみの幅W5:0.5mm
線状くぼみの深さd5:<0.01mm
線状くぼみの幅w5:0.05mm
深さのふれΔD5:≦0.01mm
実施例16において、ワーク(樹脂シート表面)をレーザー焦点から5mm離したデフォーカス状態で、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.62mm
照射スピード:200mm/秒
照射ピッチ:無し
照射回数:1回
帯状くぼみの深さD:0.1mm
帯状くぼみの幅W:0.6mm
線状くぼみ:無し
深さのふれΔD:≦0.01mm
実施例16において、レーザー装置にシリンドリカルレンズを取り付けてレーザー光を幅広に拡散させ(図17参照)、レーザー照射を下記条件に変更し、くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザースポット径:0.12mm(走査方向)×1mm
照射スピード:188mm/秒
照射ピッチ:1mm
照射回数:40回
帯状くぼみの深さD:0.1mm
帯状くぼみの幅W:40mm
線状くぼみの深さd:0.005mm
線状くぼみの幅w:1mm
深さのふれΔD:≦0.01mm
実施例16において、レーザー装置に回折格子(住友電工社製、分岐DOE「DBS001」)と集光レンズを取り付けてレーザー光を平行な8本のビームに分割し(分割ピッチ0.5mm)(図18参照)、レーザー照射を下記条件に変更し、帯状くぼみを下記形状にした以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
レーザー焦点距離130mm
照射スピード:38mm/秒
照射ピッチ:0.1mm
照射回数:5回
帯状くぼみの深さD:0.1mm
帯状くぼみの幅W:4mm
線状くぼみの深さd:0.01mm
帯状くぼみの幅w:0.1mm
深さのふれΔD:≦0.01mm
実施例1において、更に長手方向中央の帯状くぼみの両横それぞれの側に、1mmの間隔をあけて1本の帯状くぼみを形成し、計3本の帯状くぼみを形成すること以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、更に長手方向中央の帯状くぼみの両横それぞれの側に、3mmの間隔をあけた12本の帯状くぼみ(形状は実施例1と同様。)を形成し、計25本の帯状くぼみを形成すること以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティーを12.6%、帯状くぼみの深さDを0.05mmとし、長辺方向の中央だけでなく、短辺方向の中央にも帯状くぼみを形成すること以外は同様にして、樹脂シート[I]を得た。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティーを12.6%、帯状くぼみの深さDを0.05mmとし、長辺方向の中央だけでなく、裏面の短辺方向の中央にも帯状くぼみを形成すること以外は同様にして、樹脂シート[I]を得た(図5参照)。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
実施例1において、デューティーを12.6%、帯状くぼみの深さDを0.05mmとし、裏面の長手方向中央にも帯状くぼみを形成すること以外は同様にして、樹脂シート[I]を得た(図4参照)。
得られた樹脂シート[I]について、実施例1と同様の評価を行った。
樹脂シート(S1)の表面に、サンドブラスト加工で表に示される帯状くぼみを形成し、樹脂シート[I]を得た。得られた樹脂シート[I]に線状くぼみは存在しない。
得られた樹脂シート[I]の帯状くぼみ部に、ディスペンサーを用いて、上記ウレタンアクリレート34部、ブチルアクリレート15部、ビスフェノールA骨格ジアクリレート(新中村化学工業社製、NKエステル「A-BPE-4」)51部、1-ヒドロキシシクロヘキシルフェニルケトン(チバスペシャリティケミカルズ社製「Irgacure184」)0.5部よりなる光硬化性組成物(b)を、帯状くぼみが平坦になるよう塗布、充填し、スポットUV機を用いて光量1Jで光硬化を行って、両面共に平坦な樹脂シート[II]を得た。
得られた樹脂シート[II]について、実施例1と同様の評価を行った。
樹脂シート(S1)の表面に、NC加工で表に示される帯状くぼみを形成し、樹脂シート[I]を得た。得られた樹脂シート[I]に線状くぼみは存在しない。
得られた樹脂シート[I]の帯状くぼみ部に、ディスペンサーを用いて、上記ウレタンアクリレート34部、ブチルアクリレート15部、ビスフェノールA骨格ジアクリレート(新中村化学工業社製、NKエステル「A-BPE-4」)51部、1-ヒドロキシシクロヘキシルフェニルケトン(チバスペシャリティケミカルズ社製「Irgacure184」)0.5部よりなる光硬化性組成物(b)を、帯状くぼみが平坦になるよう塗布、充填し、スポットUV機を用いて光量1Jで光硬化を行って、両面共に平坦な樹脂シート[II]を得た。
得られた樹脂シート[II]について、実施例1と同様の評価を行った。
帯状くぼみの無い樹脂シート(S1)について、実施例1と同様の評価を行った。
結果は表に示されるとおり、折り畳みは困難であった。
樹脂シート(S3)上に、下記のウレタンアクリレート100部と1-ヒドロキシシクロヘキシルフェニルケトン(チバスペシャリティケミカルズ社製「Irgacure184」)5部よりなるハードコート剤を塗布し、光量1Jで光硬化することにより、0.1mm厚のハードコート層を形成した(総厚0.2mm)。得られたハードコート付き樹脂シートは、曲率半径30mmでハードコート層にクラックが入り、折り畳みは不可能であった。
温度計、撹拌機、水冷コンデンサー、窒素ガス吹き込み口を備えたフラスコに、イソホロンジイソシアネート192.0g(0.86モル)と、ペンタエリスリトールトリアクリレート〔ペンタエリスリトールトリアクリレートとペンタエリスリトールテトラアクリレートの混合物(水酸基価120mgKOH/g)〕808.0g(1.73モル)を仕込み、重合禁止剤としてハイドロキノンメチルエーテル0.01g、反応触媒としてジブチルスズジラウレート0.01gを仕込み、60℃で8時間反応させ、残存イソシアネート基が0.3%以下となった時点で反応を終了し、ウレタンアクリレートを得た。
Claims (24)
- 架橋樹脂(A)よりなる厚さ0.1~1mmで鉛筆硬度が3H以上の透明な樹脂シートであって、面内の一方向に、樹脂シートを折り畳むための帯状くぼみが、片面または両面に少なくとも1本形成されていることを特徴とする樹脂シート。
- 帯状くぼみが片面の中央に1本形成されていることを特徴とする請求項1記載の樹脂シート。
- 厚さが0.1~0.5mmであることを特徴とする請求項1または2記載の樹脂シート。
- 樹脂シートの厚さT(mm)、帯状くぼみの深さD(mm)及び帯状くぼみの幅W(mm)が、下記条件(1)及び(2)を満足することを特徴とする請求項1~3いずれか一項に記載の樹脂シート。
(1)0.05≦(T-D)≦0.2
(2)0.5≦W≦50 - 樹脂シートの厚さT(mm)、帯状くぼみの深さD(mm)及び帯状くぼみの幅W(mm)が、更に、下記条件(3)を満足することを特徴とする請求項1~4いずれか一項に記載の樹脂シート。
(3)20×(T-D) ≦ W ≦ 200×(T-D) - 帯状くぼみの深さD(mm)が、帯状くぼみ中央部が最も大きく、帯状くぼみ両端部が最も小さくなるよう連続的または段階的に変化していることを特徴とする請求項1~5いずれか一項に記載の樹脂シート。
- 帯状くぼみが、レーザーアブレーションにより形成されることを特徴とする請求項1~6いずれか一項に記載の樹脂シート。
- 帯状くぼみが、波長9~11μmの赤外線レーザーの照射で形成されることを特徴とする請求項1~7いずれか一項に記載の樹脂シート。
- 帯状くぼみの中に、更に、線状くぼみが複数形成されており、線状くぼみの深さd(mm)と幅w(mm)が、下記条件(4)及び(5)を満足することを特徴とする請求項1~8いずれか一項に記載の樹脂シート。
(4)0.001≦d≦0.05
(5)0.01≦w≦0.5 - レーザー光の焦点位置が、樹脂シートの照射面から上または下方向に0.5~10mmの範囲でずれていることを特徴とする請求項1~9いずれか一項に記載の樹脂シート。
- レーザー光がシリンドリカルレンズにより幅広に拡散されているか、または回折格子により2つ以上のビームに分割されていることを特徴とする請求項1~10いずれか一項に記載の樹脂シート。
- 架橋樹脂(A)が、光硬化性組成物(a)を硬化して得られることを特徴とする請求項1~11いずれか一項に記載の樹脂シート。
- 光硬化性組成物(a)が、下記成分(a1)及び(a2)を含有してなることを特徴とする請求項12記載の樹脂シート。
(a1)多官能(メタ)アクリレート系化合物
(a2)光重合開始剤 - 曲げ弾性率が3~5GPaであることを特徴とする請求項1~13いずれか一項に記載の樹脂シート。
- 帯状くぼみ以外の部分の表面粗さRaが20nm以下であることを特徴とする請求項1~14いずれか一項に記載の樹脂シート。
- ガラス転移温度が150℃以上であることを特徴とする請求項1~15いずれか一項に記載の樹脂シート。
- 請求項1~16いずれか一項に記載の樹脂シートを折り畳むための帯状くぼみが、該樹脂シートの屈折率と同一の屈折率を有する架橋樹脂(B)により充填されていることを特徴とする樹脂シート。
- 樹脂シートを折り畳んだ際の折り畳み部の曲率半径が3mm以下を満足することを特徴とする請求項1~17いずれか一項に記載の樹脂シート。
- 請求項1~18いずれか一項に記載の樹脂シートの片面に粘着剤層が形成されてなることを特徴とする粘着剤層付き樹脂シート。
- 請求項1~18いずれか一項に記載の樹脂シート、または、請求項19記載の粘着剤層付き樹脂シートを用いてなることを特徴とするディスプレイ用保護板。
- 請求項1~18いずれか一項に記載の樹脂シートの少なくとも片面に導電膜が成膜されてなることを特徴とする電極基板。
- 請求項1~18いずれか一項に記載の樹脂シート、または、請求項19記載の粘着剤層付き樹脂シートを用いてなることを特徴とするタッチパネル基板。
- 請求項1~18いずれか一項に記載の樹脂シート、または、請求項19記載の粘着剤層付き樹脂シートを用いてなることを特徴とする有機EL照明用の保護板。
- 請求項1~18いずれか一項に記載の樹脂シートを用いてなることを特徴とする導光板。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020167029664A KR20170009833A (ko) | 2014-05-20 | 2015-05-19 | 수지 시트, 점착제층을 갖는 수지 시트, 및 이들을 이용하여 이루어진 용도 |
| CN201580021452.0A CN106232323A (zh) | 2014-05-20 | 2015-05-19 | 树脂片、带粘合剂层的树脂片和使用它们的用途 |
| JP2015525681A JPWO2015178391A1 (ja) | 2014-05-20 | 2015-05-19 | 樹脂シート、粘着剤層付き樹脂シート、及びそれらを用いてなる用途 |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-104221 | 2014-05-20 | ||
| JP2014104221 | 2014-05-20 | ||
| JP2014133833 | 2014-06-30 | ||
| JP2014-133833 | 2014-06-30 | ||
| JP2014-258404 | 2014-12-22 | ||
| JP2014258404 | 2014-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015178391A1 true WO2015178391A1 (ja) | 2015-11-26 |
Family
ID=54554059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2015/064367 Ceased WO2015178391A1 (ja) | 2014-05-20 | 2015-05-19 | 樹脂シート、粘着剤層付き樹脂シート、及びそれらを用いてなる用途 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2015178391A1 (ja) |
| KR (1) | KR20170009833A (ja) |
| CN (1) | CN106232323A (ja) |
| WO (1) | WO2015178391A1 (ja) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017204228A1 (ja) * | 2016-05-24 | 2017-11-30 | 富士フイルム株式会社 | 積層体ならびにこれを有する画像表示装置の前面板、画像表示装置、画像表示機能付きミラ-、抵抗膜式タッチパネルおよび静電容量式タッチパネル |
| EP3301506A1 (en) * | 2016-09-30 | 2018-04-04 | LG Display Co., Ltd. | Flexible display device |
| JP2018059070A (ja) * | 2016-09-30 | 2018-04-12 | 住友化学株式会社 | 光学フィルム及びその製造方法 |
| JP2018093593A (ja) * | 2016-11-30 | 2018-06-14 | アイチエレック株式会社 | 回転機 |
| JP2018188593A (ja) * | 2017-05-11 | 2018-11-29 | 凸版印刷株式会社 | フィルムの加工方法 |
| CN108911495A (zh) * | 2018-07-11 | 2018-11-30 | 东莞市银泰丰光学科技有限公司 | 一种玻璃导光板切割工艺 |
| JP2018536903A (ja) * | 2015-12-09 | 2018-12-13 | コリア リサーチ インスティチュート オブ ケミカル テクノロジー | 色変換フォトニック結晶構造体及びそれを用いる色変換フォトニック結晶センサー |
| US10657850B2 (en) | 2018-02-13 | 2020-05-19 | Samsung Display Co., Ltd. | Foldable display device |
| US10716912B2 (en) | 2015-03-31 | 2020-07-21 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
| WO2021044877A1 (ja) | 2019-09-03 | 2021-03-11 | Agc株式会社 | ガラス基体ユニット、カバーガラス組立体、及び、車載表示装置 |
| JP2021131812A (ja) * | 2020-02-21 | 2021-09-09 | レノボ・シンガポール・プライベート・リミテッド | 携帯用情報機器及びディスプレイアセンブリ |
| US11324908B2 (en) | 2016-08-11 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Collapsible conduit, patient interface and headgear connector |
| KR20230042184A (ko) * | 2021-09-19 | 2023-03-28 | 서울대학교산학협력단 | 폴더블 장치 및 그 제조 방법 |
| JP2023536175A (ja) * | 2020-08-04 | 2023-08-23 | エルジー イノテック カンパニー リミテッド | 弾性部材及びこれを含むディスプレイ装置{elasticity member and display device having the same} |
| EP4261813A4 (en) * | 2021-09-02 | 2024-07-17 | Honor Device Co., Ltd. | BRACKET, DISPLAY MODULE AND ELECTRONIC DEVICE ASSEMBLY |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763042A (zh) * | 2017-01-20 | 2017-05-31 | 维沃移动通信有限公司 | 一种粘接件和粘接方法 |
| JP7120240B2 (ja) * | 2017-08-29 | 2022-08-17 | 東亞合成株式会社 | 樹脂シート及びこれを製造するための硬化型組成物 |
| WO2019142358A1 (ja) * | 2018-01-22 | 2019-07-25 | 三菱電機株式会社 | 光合分波器 |
| KR102107425B1 (ko) * | 2019-03-06 | 2020-05-07 | 에임트 주식회사 | 레이저를 사용한 pet 소재의 보냉 용기용 단열재 제조방법 |
| KR102820118B1 (ko) | 2020-06-03 | 2025-06-13 | 삼성디스플레이 주식회사 | 커버 윈도우의 제조 방법, 커버 윈도우 및 이를 포함하는 표시 장치 |
| JP7793343B2 (ja) * | 2021-11-08 | 2026-01-05 | 日東電工株式会社 | はく離ライナー付き光学粘着シート |
| JP7793342B2 (ja) * | 2021-11-08 | 2026-01-05 | 日東電工株式会社 | はく離ライナー付き光学粘着シート |
| TWI835464B (zh) | 2022-12-15 | 2024-03-11 | 元太科技工業股份有限公司 | 可摺疊顯示裝置 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001219486A (ja) * | 2000-02-10 | 2001-08-14 | Achilles Corp | 合成樹脂シートの折り目線筋押し加工方法及び折り目線が筋押し加工された合成樹脂シート |
| JP2005144800A (ja) * | 2003-11-13 | 2005-06-09 | Mitsubishi Rayon Co Ltd | 建材用積層フィルムまたはシート、及びこの建材用積層フィルムまたはシートを含む積層成形品 |
| JP2006501071A (ja) * | 2002-09-26 | 2006-01-12 | インダストリアル オリガミ リミテッド ライアビリティ カンパニー | 精密に折畳まれた高強度の耐疲労性構造部及びそのための薄板を設計及び製造する技術 |
| JP2006193596A (ja) * | 2005-01-13 | 2006-07-27 | Nippon Synthetic Chem Ind Co Ltd:The | 樹脂成形体、その製造方法、及びその用途 |
| JP2006342358A (ja) * | 2003-01-10 | 2006-12-21 | Mitsubishi Rayon Co Ltd | アクリル樹脂フィルム状物、アクリル樹脂積層フィルム、光硬化性アクリル樹脂フィルム又はシート、積層フィルム又はシート、及び、これらを積層した積層成形品 |
| JP2007204736A (ja) * | 2006-01-05 | 2007-08-16 | Nippon Synthetic Chem Ind Co Ltd:The | 樹脂成形体、樹脂成形体の製造方法、及びその用途 |
| JP3170746U (ja) * | 2011-07-15 | 2011-09-29 | 山口証券印刷株式会社 | 折畳みシート |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576836B1 (fr) * | 1985-02-05 | 1989-10-27 | Dupuy Eng Sa | Procede et dispositif pour le rainurage par laser de feuilles de matiere plastique |
| US5817271A (en) * | 1996-12-18 | 1998-10-06 | Congleton; Stephen D. | Altering the surfaces of functional absorbent materials for use in absorbent articles |
| JP2006019359A (ja) * | 2004-06-30 | 2006-01-19 | Matsushita Electric Ind Co Ltd | 半導体装置 |
| JP2008036981A (ja) * | 2006-08-08 | 2008-02-21 | Matsumoto Seisakusho:Kk | 折り曲げ線入りプラスチックシートおよびプラスチックシートへの折り曲げ線加工方法 |
| JP5578759B2 (ja) * | 2007-08-10 | 2014-08-27 | 日東電工株式会社 | フィルム及びその製造方法 |
| CN201552386U (zh) * | 2009-11-20 | 2010-08-18 | 深圳市大族激光科技股份有限公司 | 一种激光器的扩束装置 |
| CN103108722B (zh) * | 2010-09-15 | 2015-12-02 | 住友电气工业株式会社 | 激光加工方法 |
-
2015
- 2015-05-19 JP JP2015525681A patent/JPWO2015178391A1/ja active Pending
- 2015-05-19 CN CN201580021452.0A patent/CN106232323A/zh active Pending
- 2015-05-19 WO PCT/JP2015/064367 patent/WO2015178391A1/ja not_active Ceased
- 2015-05-19 KR KR1020167029664A patent/KR20170009833A/ko not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001219486A (ja) * | 2000-02-10 | 2001-08-14 | Achilles Corp | 合成樹脂シートの折り目線筋押し加工方法及び折り目線が筋押し加工された合成樹脂シート |
| JP2006501071A (ja) * | 2002-09-26 | 2006-01-12 | インダストリアル オリガミ リミテッド ライアビリティ カンパニー | 精密に折畳まれた高強度の耐疲労性構造部及びそのための薄板を設計及び製造する技術 |
| JP2006342358A (ja) * | 2003-01-10 | 2006-12-21 | Mitsubishi Rayon Co Ltd | アクリル樹脂フィルム状物、アクリル樹脂積層フィルム、光硬化性アクリル樹脂フィルム又はシート、積層フィルム又はシート、及び、これらを積層した積層成形品 |
| JP2005144800A (ja) * | 2003-11-13 | 2005-06-09 | Mitsubishi Rayon Co Ltd | 建材用積層フィルムまたはシート、及びこの建材用積層フィルムまたはシートを含む積層成形品 |
| JP2006193596A (ja) * | 2005-01-13 | 2006-07-27 | Nippon Synthetic Chem Ind Co Ltd:The | 樹脂成形体、その製造方法、及びその用途 |
| JP2007204736A (ja) * | 2006-01-05 | 2007-08-16 | Nippon Synthetic Chem Ind Co Ltd:The | 樹脂成形体、樹脂成形体の製造方法、及びその用途 |
| JP3170746U (ja) * | 2011-07-15 | 2011-09-29 | 山口証券印刷株式会社 | 折畳みシート |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10716912B2 (en) | 2015-03-31 | 2020-07-21 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
| US12527934B2 (en) | 2015-03-31 | 2026-01-20 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
| US12171946B2 (en) | 2015-03-31 | 2024-12-24 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
| US11904097B2 (en) | 2015-03-31 | 2024-02-20 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
| US10919998B2 (en) | 2015-12-09 | 2021-02-16 | Korea Research Institute Of Chemical Technology | Color-conversion photonic crystal structure and color-conversion photonic crystal sensor using same |
| JP2018536903A (ja) * | 2015-12-09 | 2018-12-13 | コリア リサーチ インスティチュート オブ ケミカル テクノロジー | 色変換フォトニック結晶構造体及びそれを用いる色変換フォトニック結晶センサー |
| WO2017204228A1 (ja) * | 2016-05-24 | 2017-11-30 | 富士フイルム株式会社 | 積層体ならびにこれを有する画像表示装置の前面板、画像表示装置、画像表示機能付きミラ-、抵抗膜式タッチパネルおよび静電容量式タッチパネル |
| JPWO2017204228A1 (ja) * | 2016-05-24 | 2019-04-18 | 富士フイルム株式会社 | 積層体ならびにこれを有する画像表示装置の前面板、画像表示装置、画像表示機能付きミラ−、抵抗膜式タッチパネルおよび静電容量式タッチパネル |
| US11324908B2 (en) | 2016-08-11 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Collapsible conduit, patient interface and headgear connector |
| JP7021887B2 (ja) | 2016-09-30 | 2022-02-17 | 住友化学株式会社 | 光学フィルムの製造方法 |
| EP3301506A1 (en) * | 2016-09-30 | 2018-04-04 | LG Display Co., Ltd. | Flexible display device |
| US10074824B2 (en) | 2016-09-30 | 2018-09-11 | Lg Display Co., Ltd. | Flexible display device |
| JP2018059070A (ja) * | 2016-09-30 | 2018-04-12 | 住友化学株式会社 | 光学フィルム及びその製造方法 |
| JP2018093593A (ja) * | 2016-11-30 | 2018-06-14 | アイチエレック株式会社 | 回転機 |
| JP2018188593A (ja) * | 2017-05-11 | 2018-11-29 | 凸版印刷株式会社 | フィルムの加工方法 |
| JP7027700B2 (ja) | 2017-05-11 | 2022-03-02 | 凸版印刷株式会社 | フィルムの加工方法 |
| US10657850B2 (en) | 2018-02-13 | 2020-05-19 | Samsung Display Co., Ltd. | Foldable display device |
| CN108911495A (zh) * | 2018-07-11 | 2018-11-30 | 东莞市银泰丰光学科技有限公司 | 一种玻璃导光板切割工艺 |
| WO2021044877A1 (ja) | 2019-09-03 | 2021-03-11 | Agc株式会社 | ガラス基体ユニット、カバーガラス組立体、及び、車載表示装置 |
| US12534395B2 (en) | 2019-09-03 | 2026-01-27 | AGC Inc. | Glass substrate unit, cover glass assembly, and vehicle-mounted display device |
| JP2021131812A (ja) * | 2020-02-21 | 2021-09-09 | レノボ・シンガポール・プライベート・リミテッド | 携帯用情報機器及びディスプレイアセンブリ |
| US11487329B2 (en) | 2020-02-21 | 2022-11-01 | Lenovo (Singapore) Pte Ltd | Portable information device having a flexible display |
| JP7498355B2 (ja) | 2020-08-04 | 2024-06-11 | エルジー イノテック カンパニー リミテッド | 弾性部材及びこれを含むディスプレイ装置{elasticity member and display device having the same} |
| JP2023536175A (ja) * | 2020-08-04 | 2023-08-23 | エルジー イノテック カンパニー リミテッド | 弾性部材及びこれを含むディスプレイ装置{elasticity member and display device having the same} |
| EP4261813A4 (en) * | 2021-09-02 | 2024-07-17 | Honor Device Co., Ltd. | BRACKET, DISPLAY MODULE AND ELECTRONIC DEVICE ASSEMBLY |
| US12477672B2 (en) | 2021-09-02 | 2025-11-18 | Honor Device Co., Ltd. | Support assembly, display module, and electronic device |
| KR102818920B1 (ko) * | 2021-09-19 | 2025-06-11 | 서울대학교산학협력단 | 폴더블 장치 및 그 제조 방법 |
| KR20230042184A (ko) * | 2021-09-19 | 2023-03-28 | 서울대학교산학협력단 | 폴더블 장치 및 그 제조 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170009833A (ko) | 2017-01-25 |
| CN106232323A (zh) | 2016-12-14 |
| JPWO2015178391A1 (ja) | 2017-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015178391A1 (ja) | 樹脂シート、粘着剤層付き樹脂シート、及びそれらを用いてなる用途 | |
| KR101470463B1 (ko) | 하드코팅 필름 | |
| KR101686644B1 (ko) | 플라스틱 필름 적층체 | |
| KR101415838B1 (ko) | 하드코팅 조성물 | |
| KR101470464B1 (ko) | 하드코팅 필름 | |
| JP5078520B2 (ja) | 防眩性ハードコートフィルム及びその製造方法 | |
| JP2016002764A (ja) | 積層体及びその用途、並びに積層体の製造方法 | |
| JP5882815B2 (ja) | 樹脂成形体、及びそれを用いてなる積層体 | |
| KR20170103644A (ko) | 하드코팅필름 | |
| KR20150058067A (ko) | 플라스틱 필름 | |
| JP2016023235A (ja) | 硬化性組成物 | |
| WO2015152289A1 (ja) | ケイ素化合物、コーティング剤用樹脂組成物、成形体、画像表示装置 | |
| WO2015152288A1 (ja) | コーティング剤用樹脂組成物、成形体、画像表示装置 | |
| JP2017008125A (ja) | ケイ素化合物を含む組成物とその硬化膜 | |
| CN109937396A (zh) | 触控传感器、该传感器用导电片及其制法、触控面板及其积层体和透明绝缘层形成用组合物 | |
| KR20170103646A (ko) | 하드코팅필름 | |
| JP6330433B2 (ja) | ケイ素化合物、コーティング剤用樹脂組成物、成形体、画像表示装置 | |
| JP2023544519A (ja) | フレキシブルディスプレイ装置のカバーウィンドウおよびフレキシブルディスプレイ装置 | |
| KR20070015163A (ko) | 저반사부재 | |
| JP2011000856A (ja) | 基材、中間膜及び微細凹凸構造膜を積層してなる積層体 | |
| JP5057809B2 (ja) | 樹脂基板の連続的製造方法 | |
| WO2015056660A1 (ja) | 樹脂シート、及びその用途 | |
| JP5241153B2 (ja) | 樹脂基板の製造方法 | |
| JP5219363B2 (ja) | 積層体 | |
| KR101825295B1 (ko) | 광경화성 수지 조성물, 이를 이용하여 제조된 디스플레이용 고경도 투명 플라스틱 기판 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2015525681 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15796956 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20167029664 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15796956 Country of ref document: EP Kind code of ref document: A1 |


