WO2023176590A1 - Stratifié optique avec films de protection de surface et procédé de fabrication de système d'affichage - Google Patents

Stratifié optique avec films de protection de surface et procédé de fabrication de système d'affichage Download PDF

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Publication number
WO2023176590A1
WO2023176590A1 PCT/JP2023/008561 JP2023008561W WO2023176590A1 WO 2023176590 A1 WO2023176590 A1 WO 2023176590A1 JP 2023008561 W JP2023008561 W JP 2023008561W WO 2023176590 A1 WO2023176590 A1 WO 2023176590A1
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WIPO (PCT)
Prior art keywords
surface protection
protection film
optical laminate
film
laminate
Prior art date
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PCT/JP2023/008561
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English (en)
Japanese (ja)
Inventor
光貴 野口
理 小島
咲美 ▲徳▼岡
周作 後藤
Original Assignee
日東電工株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Priority claimed from JP2022077634A external-priority patent/JP2023166827A/ja
Priority claimed from JP2022077679A external-priority patent/JP2023166854A/ja
Priority claimed from JP2022077676A external-priority patent/JP2023166851A/ja
Priority claimed from JP2022077631A external-priority patent/JP2023134316A/ja
Priority claimed from JP2022077632A external-priority patent/JP2023166825A/ja
Priority claimed from JP2022077659A external-priority patent/JP2023166841A/ja
Priority claimed from JP2022077633A external-priority patent/JP2023166826A/ja
Priority claimed from JP2022077677A external-priority patent/JP2023166852A/ja
Priority claimed from JP2022077657A external-priority patent/JP2023134317A/ja
Priority claimed from JP2022077678A external-priority patent/JP2023166853A/ja
Priority claimed from JP2022077658A external-priority patent/JP2023166840A/ja
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Publication of WO2023176590A1 publication Critical patent/WO2023176590A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus

Definitions

  • the present invention relates to an optical laminate with a surface protection film and a method for manufacturing a display system using the optical laminate with a surface protection film.
  • Image display devices represented by liquid crystal display devices and electroluminescence (EL) display devices are rapidly becoming popular.
  • EL electroluminescence
  • optical members such as polarizing members and retardation members are generally used to realize image display and improve image display performance (see, for example, Patent Document 1).
  • VR goggles with a display (VR goggles) for realizing Virtual Reality (VR) are beginning to be commercialized.
  • VR goggles the image displayed on the display panel is enlarged for the viewer to see, so the optical laminate used in VR goggles is more expensive than the optical laminate used in conventional image display devices. Strict defect management is also required.
  • the main object of the present invention is to provide an optical laminate that can be applied to VR goggles and that can be inspected for defects multiple times with its surface protected.
  • the present inventors have studied to solve the above problems, and found that the optical laminate protected with a surface protection film is subjected to defect inspection, and the inspection object (i.e., the surface protection film protected).
  • the inspection object i.e., the surface protection film protected
  • the inspection object i.e., the surface protection film protected
  • the inspection object i.e., the surface protection film protected
  • the inspection object i.e., the surface protection film protected
  • the present inventors increased the thickness of the adhesive layer of the outer surface protection film and investigated the relationship between the peeling force of the outer surface protection film and the peeling force of the inner surface protection film. It has been discovered that by making adjustments, the above problems can be solved while avoiding these problems, and the present invention has been completed.
  • the second surface protection film has a second base material, and a second adhesive layer laminated on the second base material, and the second adhesive layer has a thickness of is 8 ⁇ m or more, and the peeling force P1 of the first surface protection film to the optical laminate and the peeling force P2 of the second surface protection film to the first surface protection film are P2/P1 ⁇ 0.
  • the ratio (L2/L1) of the total light transmittance L1 of the first surface protection film to the total light transmittance L2 of the second surface protection film is 0.8 to 1.2, [1 ] to [3].
  • the optical laminate has (1) an absorptive polarizing member, a first retardation member, and a protective member in this order toward the first surface protection film, or (2) the second one.
  • a retardation member and a protective member are provided in this order toward the first surface protection film, or (3) a reflective polarizing member and a protection member are provided in this order toward the first surface protection film.
  • the optical laminate with a surface protection film according to any one of [1] to [4].
  • the surface treatment layer includes an antireflection layer, and the first surface protection film is attached to the antireflection layer.
  • a method for manufacturing a display system comprising inspecting the optical laminate with a surface protection film according to any one of [1] to [8] for defects, Obtaining a secondary laminate with a surface protection film by attaching another member to the side opposite to the side to which the surface protection film and the second surface protection film are attached, the secondary laminate with the surface protection film. Peeling the second surface protection film from the body, inspecting the secondary laminate with the surface protection film for defects, and peeling the first surface protection film from the secondary laminate with the surface protection film, obtaining a secondary laminate, the display system being goggles with a display.
  • the optical laminate with a surface protection film can be attached to the surface of the optical laminate while suppressing the problems of air bubble formation between the surface protection films (resulting in erroneous detection of defects) and poor peeling. Can be inspected for defects multiple times while being protected.
  • FIG. 1 is a schematic cross-sectional view of an optical laminate with a surface protection film according to one embodiment of the present invention.
  • 1 is a schematic diagram showing a general configuration of a display system in which an optical laminate according to an embodiment of the present invention can be used.
  • 3 is a schematic cross-sectional view showing an example of an optical laminate that can be used in the display system shown in FIG. 2.
  • FIG. 3 is a schematic cross-sectional view showing an example of an optical laminate that can be used in the display system shown in FIG. 2.
  • FIG. 3 is a schematic cross-sectional view showing an example of an optical laminate that can be used in the display system shown in FIG. 2.
  • FIG. 1 is a schematic diagram illustrating a method of manufacturing a display system according to one embodiment of the present invention.
  • FIG. 6A It is a figure following FIG. 6B.
  • FIG. 6C It is a figure following FIG. 6D.
  • Refractive index (nx, ny, nz) "nx" is the refractive index in the direction in which the in-plane refractive index is maximum (i.e., slow axis direction), and "ny” is the direction perpendicular to the slow axis in the plane (i.e., fast axis direction) "nz” is the refractive index in the thickness direction.
  • Refractive index (nx, ny, nz) "nx" is the refractive index in the direction in which the in-plane refractive index is maximum (i.e., slow axis direction), and "ny” is the direction perpendicular to the slow axis in the plane (i.e., fast axis direction) "nz” is the refractive index in the thickness direction.
  • In-plane phase difference (Re) "Re( ⁇ )” is an in-plane retardation measured with light having a wavelength of ⁇ nm at 23°C.
  • Re(550) is an in-plane retardation measured with light having a wavelength of 550 nm at 23°C.
  • Phase difference in thickness direction (Rth) is a retardation in the thickness direction measured with light having a wavelength of ⁇ nm at 23°C.
  • Rth (550) is the retardation in the thickness direction measured with light having a wavelength of 550 nm at 23°C.
  • substantially parallel includes cases within the range of 0° ⁇ 10°, for example, 0° ⁇ 5°, preferably 0° ⁇ 3°, more preferably 0° ⁇ 1 90° ⁇ 5°, preferably 90° ⁇ 3°, more preferably 90° ⁇ 1 within the range of °.
  • FIG. 1 is a schematic cross-sectional view of an optical laminate with a surface protection film according to one embodiment of the present invention.
  • the optical laminate 200 with a surface protection film includes at least one optical member, and is attached in this order outward to the optical laminate 100 and one surface of the optical laminate 100, which is used for goggles with a display. It has a first surface protection film 110 and a second surface protection film 120.
  • the first surface protection film 110 has a first base material 112 and a first adhesive layer 114 laminated on the first base material 112.
  • the second surface protection film 120 has a second base material 122 and a second adhesive layer 124 laminated on the second base material 122.
  • the first surface protection film 110 and the second surface protection film 120 are process members that are temporarily attached (temporary attachment) to the optical laminate 100, and when the optical laminate 100 is put into use. It is peeled off and removed.
  • the first surface protection film may be referred to as an inner surface protection film
  • the second surface protection film may be referred to as an outer surface protection film.
  • the optical laminate with a surface protection film can be produced by attaching a first surface protection film and a second surface protection film to one surface of the optical laminate.
  • a first surface protection film and a second surface protection film may be attached in this order to one surface of the optical laminate, or a laminate of the first surface protection film and the second surface protection film may be attached to the optical laminate. You may wear it.
  • the adhesive layer side surface of each of the first surface protection film and the second surface protection film may be protected by a release liner until it is used.
  • the first surface protection film 110 includes a first base material 112 and a first adhesive layer 114 laminated on the first base material 112.
  • the total light transmittance L1 of the first surface protection film is, for example, 85% or more, preferably 88% or more, and more preferably 90% or more. If the total light transmittance L1 is within the above range, precise defect inspection can be suitably performed even when the surface of the optical laminate is protected by the first surface protection film.
  • the haze of the first surface protection film is, for example, 5% or less, preferably 4% or less, more preferably 3% or less, and typically 0.05% or more. As long as the haze is within the above range, precise defect inspection can be suitably performed even when the surface of the optical laminate is protected by the first surface protection film.
  • a surface protection film having a haze within the above range can be obtained, for example, by using a low haze base material and/or an adhesive layer.
  • the peel force P1 (peel speed: 300 mm/min, peel angle: 180°) of the first surface protection film against the optical laminate is, for example, 1.0 N/50 mm or less, preferably 0.5 N/50 mm or less, more preferably 0. 3N/50mm or less, for example 0.05N/50mm or more, preferably 0.08N/50mm or more, more preferably 0.10N/50mm or more. If the peeling force P1 is within the above range, the problem of poor peeling in which the first surface protective film is peeled off together with the second surface protective film when the second surface protective film is peeled off can be suitably prevented. I can do it.
  • the first base material is formed of any suitable resin film that can be used as a surface protection film.
  • suitable resin film include cycloolefin (COP) systems such as polynorbornene systems, polyester systems such as polyethylene terephthalate (PET) systems, cellulose systems such as triacetylcellulose (TAC), and polycarbonates.
  • COP cycloolefin
  • PET polyethylene terephthalate
  • TAC triacetylcellulose
  • PC transparent resins
  • (meth)acrylic polyvinyl alcohol, polyamide, polyimide, polyethersulfone, polysulfone, polystyrene, polyolefin, and acetate.
  • thermosetting resins or ultraviolet curable resins such as (meth)acrylic, urethane, (meth)acrylic urethane, epoxy, and silicone resins may also be mentioned.
  • (meth)acrylic resin refers to acrylic resin and/or methacrylic resin.
  • Other examples include glassy polymers such as siloxane polymers.
  • the polymer film described in JP-A-2001-343529 (WO01/37007) can also be used. Materials for this film include, for example, a resin composition containing a thermoplastic resin having a substituted or unsubstituted imide group in its side chain, and a thermoplastic resin having a substituted or unsubstituted phenyl group and nitrile group in its side chain.
  • a resin composition containing an alternating copolymer of isobutene and N-methylmaleimide and an acrylonitrile/styrene copolymer can be used.
  • the polymer film may be, for example, an extrusion molded product of the resin composition.
  • the materials for the resin film can be used alone or in combination.
  • the first base material preferably contains at least one transparent resin selected from the group consisting of COP-based, PET-based, TAC-based, PC-based, and (meth)acrylic-based, and more preferably COP-based, PET-based, etc.
  • the resin contains at least one transparent resin selected from the group consisting of COP-based, PC-based, and (meth)acrylic-based, and more preferably at least one transparent resin selected from the group consisting of COP-based, PET-based, and PC-based. Contains resin.
  • the first base material may contain an antioxidant, an ultraviolet absorber, a light stabilizer, a nucleating agent, a filler, a pigment, a surfactant, an antistatic agent, and the like.
  • the surface of the first base material (the surface opposite to the first adhesive layer) is provided with an easy-adhesion layer, an easy-slip layer, an anti-blocking layer, an antistatic layer, an anti-reflection layer, an anti-oligomer layer, etc. Good too.
  • the thickness of the first base material is typically 5 ⁇ m or more, preferably 20 ⁇ m or more, and typically 200 ⁇ m or less, preferably 100 ⁇ m or less.
  • the first adhesive layer is composed of any suitable adhesive.
  • the adhesive constituting the first adhesive layer typically contains at least one type of adhesive selected from the group consisting of (meth)acrylic adhesives, urethane adhesives, and silicone adhesives. .
  • the first adhesive layer contains a (meth)acrylic adhesive.
  • the (meth)acrylic pressure-sensitive adhesive contains a polymer (hereinafter referred to as (meth)acrylic polymer) of a monomer component whose main component is alkyl (meth)acrylate.
  • the (meth)acrylic polymer contains a structural unit derived from alkyl (meth)acrylate.
  • the content of structural units derived from alkyl (meth)acrylate is typically 50% by mass or more, preferably 80% by mass or more, more preferably 93% by mass or more, for example 100% by mass or more, preferably 80% by mass or more, and more preferably 93% by mass or more in the (meth)acrylic polymer. It is not more than 98% by mass, preferably not more than 98% by mass.
  • the alkyl group that the alkyl (meth)acrylate has may be linear or branched.
  • the number of carbon atoms in the alkyl group is, for example, 1 or more and 18 or less.
  • Examples of the alkyl group include methyl group, ethyl group, butyl group, 2-ethylhexyl group, decyl group, isodecyl group, and octadecyl group.
  • Alkyl (meth)acrylates can be used alone or in combination.
  • the average number of carbon atoms in the alkyl group is preferably 3 to 10.
  • the (meth)acrylic polymer may also contain structural units derived from copolymerizable monomers that are polymerizable with alkyl (meth)acrylates.
  • copolymerizable monomers include carboxyl group-containing monomers and hydroxyl group-containing monomers. Copolymerizable monomers can be used alone or in combination.
  • a carboxyl group-containing monomer is a compound that contains a carboxyl group in its structure and also contains a polymerizable unsaturated double bond such as a (meth)acryloyl group or a vinyl group.
  • the carboxyl group-containing monomer include (meth)acrylic acid, carboxyethyl (meth)acrylate, maleic acid, fumaric acid, and crotonic acid, with (meth)acrylic acid being preferred.
  • the (meth)acrylic polymer contains a structural unit derived from a carboxyl group-containing monomer, the adhesive properties of the adhesive layer can be improved.
  • the content ratio of the structural unit derived from the carboxyl group-containing monomer is preferably 0.01% by mass or more and 10% by mass or less.
  • a hydroxyl group-containing monomer is a compound that contains a hydroxyl group in its structure and also contains a polymerizable unsaturated double bond such as a (meth)acryloyl group or a vinyl group.
  • hydroxyl group-containing monomers include 2-hydroxyethyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 8-hydroxyoctyl (meth)acrylate, 12-hydroxylauryl (meth)acrylate, (4-hydroxymethyl cyclohexyl)-methyl acrylate, preferably 2-hydroxyethyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, more preferably 2-hydroxyethyl (meth)acrylate.
  • the durability of the adhesive layer can be improved.
  • the content of the structural unit derived from the hydroxyl group-containing monomer is preferably 0.01% by mass or more and 10% by mass in the (meth)acrylic polymer. % or less.
  • the weight average molecular weight Mw of the (meth)acrylic polymer is, for example, 100,000 to 2,000,000, preferably 200,000 to 1,000,000.
  • the (meth)acrylic pressure-sensitive adhesive can contain a crosslinking agent.
  • the crosslinking agent typically includes an organic crosslinking agent and a polyfunctional metal chelate, preferably an organic crosslinking agent.
  • examples of the organic crosslinking agent include an isocyanate crosslinking agent, a peroxide crosslinking agent, an epoxy crosslinking agent, and an imine crosslinking agent, and more preferably an isocyanate crosslinking agent.
  • the content of the crosslinking agent is usually 0.01 parts by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the (meth)acrylic polymer.
  • the above adhesives may contain various additives in appropriate proportions, if necessary.
  • the composition of the base polymer for example, the type and content ratio of monomers, the type and content ratio of crosslinking agents, etc.
  • the molecular weight of the base polymer for example, the type and content ratio of crosslinking agents, etc.
  • An adhesive layer having desired adhesiveness can be obtained.
  • Additives include polymerization initiators, solvents, polymerization catalysts, crosslinking catalysts, silane coupling agents, tackifiers, plasticizers, softeners, deterioration inhibitors, fillers, colorants (pigments, dyes, etc.), light Examples include stabilizers, ultraviolet absorbers, antioxidants, surfactants, antistatic agents, chain transfer agents, and the like.
  • the thickness of the first adhesive layer is, for example, 10 ⁇ m or more, preferably 12 ⁇ m or more, and is, for example, 40 ⁇ m or less, preferably 30 ⁇ m or less, more preferably 25 ⁇ m or less.
  • the first adhesive layer has the above thickness, good protection for the optical laminate can be achieved.
  • the ratio (T1/T2) between the thickness T1 of the first adhesive layer and the thickness T2 of the second adhesive layer of the second surface protection film is, for example, 2 or less, preferably 1.8 or less, More preferably 1.5 or less, still more preferably 1.2 or less, even more preferably 1 or less, particularly preferably 0.8 or less, for example 0.1 or more, preferably 0.2 or more, more preferably is 0.3 or more, more preferably 0.4 or more, even more preferably 0.5 or more. If the ratio (T1/T2) is within the above range, generation of bubbles and poor peeling between the first surface protection film and the second surface protection film can be suitably suppressed. Also, good protection for the optical laminate can be provided.
  • the first adhesive layer may be formed on the surface of the first base material by direct copying or by transfer.
  • direct copying the adhesive is directly applied to the surface of the first base material to form the first adhesive layer.
  • transfer a first adhesive layer is formed by applying an adhesive to the surface of a release liner, and then a base material is attached to the first adhesive layer.
  • the first base material includes an amorphous resin having a relatively low glass transition temperature Tg (for example, 150° C. or lower)
  • Tg glass transition temperature
  • the first adhesive layer is preferably formed by a transfer process. With the transfer process, it is possible to prevent the high temperature during drying required for forming the first adhesive layer from affecting the first base material.
  • the second surface protection film 120 includes a second base material 122 and a second adhesive layer 124 laminated on the second base material.
  • the total light transmittance L2 of the second surface protection film is, for example, 85% or more, preferably 88% or more, and more preferably 90% or more. If the total light transmittance L2 is within the above range, precise defect inspection can be suitably performed even when the surface of the optical laminate is protected by the first surface protection film and the second surface protection film. .
  • the ratio (L2/L1) between the total light transmittance L1 of the first surface protection film and the total light transmittance L2 of the second surface protection film is, for example, 0.8 to 1.2, preferably 0.85 to 1. 15, more preferably 0.9 to 1.1. If the ratio (L2/L1) is within the above range, precise defect inspection can be suitably performed even when the surface of the optical laminate is protected by the first surface protection film and the second surface protection film. can.
  • the haze of the second surface protection film is, for example, 5% or less, preferably 4% or less, more preferably 3% or less, and typically 0.05% or more. If the haze is within the above range, precise defect inspection can be suitably performed even when the surface of the optical laminate is protected by the first surface protection film and the second surface protection film.
  • the peel force P2 (peel speed: 300 mm/min, peel angle: 180°) of the second surface protection film against the first surface protection film is, for example, 0.5 N/50 mm or less, preferably 0.3 N/50 mm or less, more preferably is 0.2N/50mm or less, more preferably 0.1N/50mm or less, for example 0.01N/50mm or more, preferably 0.03N/50mm or more, and even more preferably 0.05N/50mm. It is 50 mm or more. If the peeling force P2 is within the above range, it is possible to suitably prevent the problem of poor peeling in which the first surface protective film is peeled off together with the second surface protective film when the second surface protective film is peeled off. can. Moreover, generation of air bubbles between the first surface protection film and the second surface protection film can be suitably suppressed.
  • Peeling force P1 peeling speed: 300 mm/min, peeling angle: 180°
  • P2 peeling speed: 300 mm/min
  • the ratio (P2/P1) is typically 0.8 or less, preferably 0.6 or less, more preferably 0.5 or less, for example 0.2 or more. . If the ratio of peeling force (P2/P1) is within the above range, there will be a problem of poor peeling in which the first surface protective film is peeled off together with the second surface protective film when the second surface protective film is peeled off. can be suitably prevented. Moreover, generation of air bubbles between the first surface protection film and the second surface protection film can be suitably suppressed.
  • the second base material is formed of any suitable resin film that can be used as a surface protection film. Specific examples of the material that is the main component of the resin film are as described above regarding the first base material.
  • the second base material may contain antioxidants, ultraviolet absorbers, light stabilizers, nucleating agents, fillers, pigments, surfactants, antistatic agents, and the like.
  • the surface of the second base material (the surface opposite to the second adhesive layer) is provided with an easy-adhesion layer, an easy-slip layer, an anti-blocking layer, an antistatic layer, an anti-reflection layer, an anti-oligomer layer, etc. Good too.
  • the thickness of the second base material is typically 5 ⁇ m or more, preferably 20 ⁇ m or more, and typically 200 ⁇ m or less, preferably 100 ⁇ m or less.
  • the second adhesive layer is made of any suitable adhesive.
  • the adhesive constituting the second adhesive layer typically contains at least one adhesive selected from the group consisting of (meth)acrylic adhesives, urethane adhesives, and silicone adhesives. .
  • the second adhesive layer contains a (meth)acrylic adhesive. The details of the (meth)acrylic adhesive are as described above regarding the first adhesive layer.
  • the above-mentioned adhesives may contain a base polymer (or its constituent monomer components) and, if necessary, additives.
  • Specific examples of the additive are as described above for the first adhesive layer.
  • the thickness of the second adhesive layer is typically 8 ⁇ m or more, preferably 10 ⁇ m or more, more preferably 15 ⁇ m or more, and, for example, 50 ⁇ m or less, preferably 40 ⁇ m or less, more preferably 30 ⁇ m or less.
  • the second adhesive layer has the above-mentioned thickness, the generation of air bubbles between the first surface protection film and the second surface protection film is suppressed, and the optical laminate is formed with these surface protection films attached. Defect inspection can be performed satisfactorily.
  • the method for forming the second adhesive layer includes the same method as the method for forming the first adhesive layer.
  • the optical laminate includes at least one optical member and is used in goggles with a display.
  • the optical member include an absorptive polarizing member, a reflective polarizing member, a retardation member, and the like.
  • the optical laminate may have an adhesive layer on the surface opposite to the side to which the first surface protection film and the second surface protection film are attached.
  • FIG. 2 is a schematic diagram showing a general configuration of a display system (goggles with a display) to which the optical laminate can be applied.
  • FIG. 2 schematically shows the arrangement, shape, etc. of each component of the display system 2.
  • the display system 2 includes a display element 12, a reflective polarizing member 14, a first lens section 16, a half mirror 18, a first retardation member 20, a second retardation member 22, and a second lens section 24. It is equipped with The reflective polarizing member 14 is disposed at the front of the display element 12 on the display surface 12a side, and can reflect light emitted from the display element 12.
  • the first lens section 16 is arranged on the optical path between the display element 12 and the reflective polarizing member 14, and the half mirror 18 is arranged between the display element 12 and the first lens section 16.
  • the first retardation member 20 is arranged on the optical path between the display element 12 and the half mirror 18, and the second retardation member 22 is arranged on the optical path between the half mirror 18 and the reflective polarizing member 14.
  • the display system 2 may further include an absorptive polarizing member between the reflective polarizing member 14 and the second lens section 24.
  • the components disposed in front of the half mirror are collectively assembled into a lens section ( It may also be referred to as a lens section 4).
  • the display element 12 is, for example, a liquid crystal display or an organic EL display, and has a display surface 12a for displaying images.
  • the light emitted from the display surface 12a passes through a polarizing member 10 that may be included in the display element 12, and is emitted as first linearly polarized light.
  • the first retardation member 20 includes a first ⁇ /4 member that can convert the first linearly polarized light incident on the first retardation member 20 into first circularly polarized light.
  • the first retardation member may correspond to the first ⁇ /4 member.
  • the first retardation member 20 may be provided integrally with the display element 12.
  • the half mirror 18 transmits the light emitted from the display element 12 and reflects the light reflected by the reflective polarizing member 14 toward the reflective polarizing member 14.
  • the half mirror 18 is provided integrally with the first lens section 16.
  • the second retardation member 22 includes a second ⁇ /4 member that can transmit the light reflected by the reflective polarizing member 14 and the half mirror 18 through the reflective polarizing member 14.
  • the second retardation member may correspond to the second ⁇ /4 member.
  • the second retardation member 22 may be provided integrally with the first lens portion 16.
  • the first circularly polarized light emitted from the first ⁇ /4 member included in the first retardation member 20 passes through the half mirror 18 and the first lens portion 16, and The second ⁇ /4 member converts the light into a second linearly polarized light.
  • the second linearly polarized light emitted from the second ⁇ /4 member is reflected toward the half mirror 18 without passing through the reflective polarizing member 14.
  • the polarization direction of the second linearly polarized light incident on the reflective polarizing member 14 is the same direction as the reflection axis of the reflective polarizing member 14. Therefore, the second linearly polarized light incident on the reflective polarizing member 14 is reflected by the reflective polarizing member 14.
  • the second linearly polarized light reflected by the reflective polarizing member 14 is converted into second circularly polarized light by the second ⁇ /4 member included in the second retardation member 22, and is emitted from the second ⁇ /4 member.
  • the second circularly polarized light passes through the first lens section 16 and is reflected by the half mirror 18.
  • the second circularly polarized light reflected by the half mirror 18 passes through the first lens section 16 and is converted into third linearly polarized light by the second ⁇ /4 member included in the second retardation member 22.
  • the third linearly polarized light is transmitted through the reflective polarizing member 14 .
  • the polarization direction of the third linearly polarized light incident on the reflective polarizing member 14 is the same direction as the transmission axis of the reflective polarizing member 14. Therefore, the third linearly polarized light incident on the reflective polarizing member 14 is transmitted through the reflective polarizing member 14.
  • the display system 2 may include an absorbing polarizing member (typically, an absorbing polarizing film) in front of the reflective polarizing member 14 (on the side closer to the eyes).
  • the reflection axis of the reflective polarizing member 14 and the absorption axis of the absorptive polarizing member may be arranged substantially parallel to each other.
  • the third linearly polarized light that has passed through the reflective polarizing member 14 can pass through the absorbing polarizing member as it is.
  • the reflective polarizing member and the absorbing polarizing member may be laminated with an adhesive layer interposed therebetween.
  • the light transmitted through the reflective polarizing member 14 passes through the second lens section 24 and enters the user's eyes 26.
  • the absorption axis of the polarizing member 10 and the reflection axis of the reflective polarizing member 14 included in the display element 12 may be arranged substantially parallel to each other, or may be arranged substantially perpendicular to each other.
  • the angle between the absorption axis of the polarizing member 10 included in the display element 12 and the slow axis of the first ⁇ /4 member included in the first retardation member 20 is, for example, 40° to 50°, and 42°. ⁇ 48°, and may be about 45°.
  • the angle between the absorption axis of the polarizing member included in the display element 12 and the slow axis of the second ⁇ /4 member included in the second retardation member 22 is, for example, 40° to 50°, and 42° to 50°. It may be 48° or about 45°.
  • a space may be formed between the first lens portion 16 and the second lens portion 24.
  • the member disposed between the first lens section 16 and the second lens section 24 is preferably provided integrally with either the first lens section 16 or the second lens section 24.
  • the member disposed between the first lens part 16 and the second lens part 24 be integrated with either the first lens part 16 or the second lens part 24 via an adhesive layer. According to such a configuration, for example, each member can be easily handled.
  • the adhesive layer may be formed of an adhesive or a pressure-sensitive adhesive.
  • the adhesive layer may be an adhesive layer or an adhesive layer.
  • the thickness of the adhesive layer is, for example, 0.05 ⁇ m to 30 ⁇ m.
  • FIG. 3 is a schematic cross-sectional view of an optical laminate that can be used in the display system illustrated in FIG. 2.
  • the optical laminate 100a includes an adhesive layer 31, a polarizing member 10, a first retardation member 20, and a first protective member 41 in this order.
  • the polarizing member 10, the first retardation member 20, and the first protection member 41 are laminated with adhesive layers 51 and 52 interposed therebetween.
  • the adhesive layers 51 and 52 are typically adhesive layers or adhesive layers, preferably adhesive layers.
  • the thickness of the adhesive layer is, for example, 0.05 ⁇ m to 30 ⁇ m.
  • the surface of the adhesive layer 31 is protected by a release liner 61 until it is used. Note that the first surface protection film and the second surface protection film are attached to the surface of the optical laminate 100a on the first protection member 41 side.
  • the first retardation member 20 has a laminated structure of a first ⁇ /4 member 20a and a first positive C plate 20b.
  • the first positive C plate 20b may be located closer to the polarizing member 10 than the first ⁇ /4 member 20a, or the first positive C plate 20b may be omitted. good.
  • the first ⁇ /4 member 20a and the first positive C plate 20b are laminated, for example, via an adhesive layer (not shown).
  • the angle between the absorption axis of the polarizing member 10 and the slow axis of the first ⁇ /4 member 20a is preferably 40° to 50°, more preferably 42° to 48°. 45°, for example, about 45°.
  • the optical laminate 100a can be applied, for example, to manufacturing a display system illustrated in FIG. 2, in which the first retardation member 20 is integrally provided with the display element 12.
  • the release liner 61 is peeled off from the optical laminate 100a, and the polarizing member 10 is attached to the liquid crystal cell together with the back side polarizing member so that the polarizing member 10 becomes the front side (viewing side) polarizing member of the liquid crystal cell.
  • a display system in which the retardation member 20 is integrally provided with a liquid crystal panel (display element) can be manufactured.
  • the first retardation member 20 is integrated with the organic EL panel (display element) by peeling off the release liner 61 from the optical laminate 100a and bonding it to the front of the organic EL panel via the adhesive layer 31.
  • a display system can be manufactured that is provided with a display system.
  • a third retardation member including a third ⁇ /4 member may be disposed between the optical laminate 100a and the organic EL panel.
  • the third retardation member may be included in the optical laminate.
  • the optical laminate may include an adhesive layer, a third retardation member, a polarizing member, a first retardation member, and a protection member in this order.
  • the same explanation as for the first ⁇ /4 member can be applied to the third ⁇ /4 member.
  • the third retardation member is configured such that the slow axis of the third ⁇ /4 member makes an angle of, for example, 40° to 50°, 42° to 48°, or about 45° with the absorption axis of the polarizing member 10. may be placed.
  • the polarizing member 10 is typically an absorption type polarizing member including a resin film containing a dichroic substance (sometimes referred to as an absorption type polarizing film), and if necessary, a protective layer is provided on one or both sides thereof. may further include.
  • the protective layer is typically bonded to the absorption polarizing film via any suitable adhesive layer.
  • a typical example of the adhesive forming the adhesive layer is an ultraviolet curable adhesive.
  • the cross transmittance (Tc) of the polarizing member (absorbing polarizing film) is preferably 0.5% or less, more preferably 0.1% or less, and still more preferably 0.05% or less.
  • the single transmittance (Ts) of the polarizing member (absorbing polarizing film) is, for example, 41.0% to 45.0%, preferably 42.0% or more.
  • the degree of polarization (P) of the polarizing member (absorbing polarizing film) is, for example, 99.0% to 99.997%, preferably 99.9% or more.
  • the above-mentioned orthogonal transmittance, single transmittance, and degree of polarization can be measured using, for example, an ultraviolet-visible spectrophotometer.
  • the degree of polarization P can be determined by measuring the single transmittance Ts, parallel transmittance Tp, and cross transmittance Tc using an ultraviolet-visible spectrophotometer, and from the obtained Tp and Tc using the following formula.
  • Ts, Tp, and Tc are Y values measured using a 2-degree field of view (C light source) according to JIS Z8701 and subjected to visibility correction.
  • Polarization degree P (%) ⁇ (Tp-Tc)/(Tp+Tc) ⁇ 1/2 ⁇ 100
  • the thickness of the absorption type polarizing film is, for example, 1 ⁇ m or more and 20 ⁇ m or less, may be 2 ⁇ m or more and 15 ⁇ m or less, may be 12 ⁇ m or less, may be 10 ⁇ m or less, or may be 8 ⁇ m or less, It may be 5 ⁇ m or less.
  • the above-mentioned absorption type polarizing film may be produced from a single layer resin film, or may be produced using a laminate of two or more layers.
  • a hydrophilic polymer film such as a polyvinyl alcohol (PVA) film, a partially formalized PVA film, or a partially saponified ethylene/vinyl acetate copolymer film is coated with iodine or dichloromethane.
  • An absorption type polarizing film can be obtained by performing a dyeing treatment with a dichroic substance such as a color dye, a stretching treatment, and the like. Among these, an absorption type polarizing film obtained by dyeing a PVA film with iodine and uniaxially stretching it is preferred.
  • the above-mentioned staining with iodine is performed, for example, by immersing the PVA-based film in an iodine aqueous solution.
  • the stretching ratio of the above-mentioned uniaxial stretching is preferably 3 to 7 times. Stretching may be performed after the dyeing process or may be performed while dyeing. Alternatively, it may be dyed after being stretched. If necessary, the PVA film is subjected to swelling treatment, crosslinking treatment, washing treatment, drying treatment, etc.
  • the laminate produced using the above-mentioned laminate of two or more layers is a laminate of a resin base material and a PVA resin layer (PVA resin film) laminated on the resin base material, or a laminate of a resin base material and a PVA resin layer (PVA resin film) laminated on the resin base material, or Examples include a laminate of a material and a PVA-based resin layer formed by coating on the resin base material.
  • An absorption type polarizing film obtained by using a laminate of a resin base material and a PVA resin layer coated on the resin base material can be obtained by, for example, applying a PVA resin solution to the resin base material, drying it, and applying the resin.
  • a PVA-based resin layer on a base material to obtain a laminate of the resin base material and the PVA-based resin layer; stretching and dyeing the laminate to make the PVA-based resin layer an absorption type polarizing film.
  • a polyvinyl alcohol resin layer containing a halide and a polyvinyl alcohol resin is formed on one side of the resin base material.
  • Stretching typically includes immersing the laminate in an aqueous boric acid solution and stretching.
  • the stretching may further include stretching the laminate in air at a high temperature (for example, 95° C. or higher) before stretching in the boric acid aqueous solution, if necessary.
  • the laminate is preferably subjected to a drying shrinkage treatment in which the laminate is heated while being conveyed in the longitudinal direction to shrink by 2% or more in the width direction.
  • the manufacturing method of this embodiment includes subjecting the laminate to an in-air auxiliary stretching process, a dyeing process, an underwater stretching process, and a drying shrinkage process in this order.
  • the obtained resin base material/absorption type polarizing film laminate may be used as is (that is, the resin base material may be used as a protective layer of the absorption type polarizing film), or the resin base material/absorption type polarizing film laminate may be used as is.
  • Any suitable protective layer depending on the purpose may be laminated on the peeled surface from which the resin base material is peeled off, or on the surface opposite to the peeled surface. Details of the manufacturing method of such an absorption type polarizing film are described in, for example, Japanese Patent Application Publication No. 2012-73580 and Japanese Patent No. 6470455. The entire descriptions of these publications are incorporated herein by reference.
  • the protective layer is formed of any suitable film that can be used as a protective layer of an absorption polarizing film.
  • materials that are the main components of the film include cycloolefin (COP) systems such as polynorbornene systems, polyester systems such as polyethylene terephthalate (PET) systems, cellulose resins such as triacetyl cellulose (TAC), and polycarbonate.
  • COP cycloolefin
  • PET polyethylene terephthalate
  • TAC triacetyl cellulose
  • Examples include transparent resins such as (PC), (meth)acrylic, polyvinyl alcohol, polyamide, polyimide, polyethersulfone, polysulfone, polystyrene, polyolefin, and acetate.
  • thermosetting resins or ultraviolet curable resins such as (meth)acrylic, urethane, (meth)acrylic urethane, epoxy, and silicone resins may also be mentioned.
  • (meth)acrylic resin refers to acrylic resin and/or methacrylic resin.
  • Other examples include glassy polymers such as siloxane polymers.
  • the polymer film described in JP-A-2001-343529 (WO01/37007) can also be used. Materials for this film include, for example, a resin composition containing a thermoplastic resin having a substituted or unsubstituted imide group in its side chain, and a thermoplastic resin having a substituted or unsubstituted phenyl group and nitrile group in its side chain.
  • a resin composition containing an alternating copolymer of isobutene and N-methylmaleimide and an acrylonitrile/styrene copolymer can be used.
  • the polymer film may be, for example, an extrusion molded product of the resin composition.
  • the materials for the resin film can be used alone or in combination.
  • the thickness of the protective layer is typically 100 ⁇ m or less, for example 5 ⁇ m to 80 ⁇ m, preferably 10 ⁇ m to 50 ⁇ m, more preferably 15 ⁇ m to 35 ⁇ m.
  • the in-plane retardation Re (550) of the first ⁇ /4 member 20a is, for example, 100 nm to 190 nm, may be 110 nm to 180 nm, may be 130 nm to 160 nm, or may be 135 nm to 155 nm. Good too.
  • the first ⁇ /4 member preferably exhibits inverse dispersion wavelength characteristics in which the retardation value increases depending on the wavelength of the measurement light.
  • Re(450)/Re(550) of the first ⁇ /4 member is, for example, 0.75 or more and less than 1, and may be 0.8 or more and 0.95 or less.
  • the first ⁇ /4 member preferably exhibits a refractive index characteristic of nx>ny ⁇ nz.
  • the Nz coefficient of the first ⁇ /4 member is preferably 0.9 to 3, more preferably 0.9 to 2.5, even more preferably 0.9 to 1.5, and particularly preferably is 0.9 to 1.3.
  • the first ⁇ /4 member is formed of any suitable material that can satisfy the above characteristics.
  • the first ⁇ /4 member may be, for example, a stretched resin film or an oriented solidified layer of a liquid crystal compound.
  • the resins contained in the above resin film include polycarbonate resin, polyester carbonate resin, polyester resin, polyvinyl acetal resin, polyarylate resin, cyclic olefin resin, cellulose resin, polyvinyl alcohol resin, and polyamide resin. , polyimide resin, polyether resin, polystyrene resin, acrylic resin, and the like. These resins may be used alone or in combination. Examples of the combination method include blending and copolymerization. When the first ⁇ /4 member exhibits reverse dispersion wavelength characteristics, a resin film containing a polycarbonate resin or a polyester carbonate resin (hereinafter sometimes simply referred to as a polycarbonate resin) may be suitably used.
  • polycarbonate resins contain structural units derived from fluorene-based dihydroxy compounds, structural units derived from isosorbide-based dihydroxy compounds, alicyclic diols, alicyclic dimethanols, di-, tri-, or polyethylene glycols, and alkylene-based dihydroxy compounds. a structural unit derived from at least one dihydroxy compound selected from the group consisting of glycol or spiroglycol.
  • the polycarbonate resin contains a structural unit derived from a fluorene dihydroxy compound, a structural unit derived from an isosorbide dihydroxy compound, a structural unit derived from an alicyclic dimethanol, and/or a di, tri, or polyethylene glycol. More preferably, it contains a structural unit derived from a fluorene dihydroxy compound, a structural unit derived from an isosorbide dihydroxy compound, and a structural unit derived from di, tri or polyethylene glycol. .
  • the polycarbonate resin may contain structural units derived from other dihydroxy compounds as necessary.
  • the thickness of the first ⁇ /4 member made of a stretched resin film is, for example, 10 ⁇ m to 100 ⁇ m, preferably 10 ⁇ m to 70 ⁇ m, and more preferably 20 ⁇ m to 60 ⁇ m.
  • the liquid crystal compound alignment and solidification layer is a layer in which the liquid crystal compound is aligned in a predetermined direction within the layer, and the alignment state is fixed.
  • the "alignment hardened layer” is a concept that includes an orientation hardened layer obtained by curing a liquid crystal monomer as described below.
  • rod-shaped liquid crystal compounds are typically aligned in the slow axis direction of the first ⁇ /4 member (homogeneous alignment).
  • Examples of rod-shaped liquid crystal compounds include liquid crystal polymers and liquid crystal monomers.
  • the liquid crystal compound is preferably polymerizable. If the liquid crystal compound is polymerizable, the alignment state of the liquid crystal compound can be fixed by aligning the liquid crystal compound and then polymerizing it.
  • the liquid crystal compound alignment and solidification layer is produced by subjecting the surface of a predetermined base material to an alignment treatment, applying a coating liquid containing the liquid crystal compound to the surface, and subjecting the liquid crystal compound to the alignment treatment. It can be formed by orienting it in a corresponding direction and fixing the orientation state. Any suitable orientation treatment may be employed as the orientation treatment. Specifically, mechanical alignment treatment, physical alignment treatment, and chemical alignment treatment can be mentioned. Specific examples of mechanical alignment treatment include rubbing treatment and stretching treatment. Specific examples of physical alignment treatment include magnetic field alignment treatment and electric field alignment treatment. Specific examples of chemical alignment treatment include oblique vapor deposition and photo alignment treatment. As the treatment conditions for various orientation treatments, any appropriate conditions may be adopted depending on the purpose.
  • the alignment of the liquid crystal compound is carried out by treatment at a temperature that exhibits a liquid crystal phase depending on the type of liquid crystal compound.
  • the liquid crystal compound assumes a liquid crystal state, and the liquid crystal compound is oriented in accordance with the orientation treatment direction of the substrate surface.
  • the alignment state is fixed by cooling the liquid crystal compound aligned as described above.
  • the alignment state is fixed by subjecting the liquid crystal compound aligned as described above to polymerization treatment or crosslinking treatment.
  • liquid crystal compound any suitable liquid crystal polymer and/or liquid crystal monomer can be used as the liquid crystal compound.
  • the liquid crystal polymer and the liquid crystal monomer may be used alone or in combination.
  • Specific examples of liquid crystal compounds and methods for producing liquid crystal alignment solidified layers are described in, for example, JP 2006-163343A, JP 2006-178389A, and WO 2018/123551A. The descriptions of these publications are incorporated herein by reference.
  • the thickness of the first ⁇ /4 member composed of the liquid crystal alignment solidified layer is, for example, 1 ⁇ m to 10 ⁇ m, preferably 1 ⁇ m to 8 ⁇ m, more preferably 1 ⁇ m to 6 ⁇ m, and still more preferably 1 ⁇ m to 4 ⁇ m. be.
  • the retardation Rth (550) in the thickness direction of the first positive C plate 20b is preferably -50 nm to -300 nm, more preferably -70 nm to -250 nm, and still more preferably -90 nm to -200 nm. , particularly preferably -100 nm to -180 nm.
  • the in-plane retardation Re (550) of the first positive C plate is, for example, less than 10 nm.
  • the first positive C-plate may be formed of any suitable material.
  • the first positive C-plate preferably consists of a film containing liquid crystal material fixed in a homeotropic orientation.
  • the liquid crystal material (liquid crystal compound) that can be homeotropically aligned may be a liquid crystal monomer or a liquid crystal polymer.
  • Specific examples of the method for forming such a liquid crystal compound and positive C plate include the method for forming the liquid crystal compound and the retardation layer described in [0020] to [0028] of JP-A No. 2002-333642.
  • the thickness of the first positive C plate is preferably 0.5 ⁇ m to 5 ⁇ m.
  • the first protection member 41 typically includes a base material.
  • the substrate may be comprised of any suitable film.
  • Materials that are the main components of the film constituting the base material include, for example, cellulose resins such as triacetyl cellulose (TAC), polyesters, polyvinyl alcohols, polycarbonates, polyamides, polyimides, polyethersulfones, Examples include polysulfone-based, polystyrene-based, cycloolefin-based resins such as polynorbornene, polyolefin-based resins, (meth)acrylic-based resins, and acetate-based resins.
  • the thickness of the base material is preferably 5 ⁇ m to 80 ⁇ m, more preferably 10 ⁇ m to 40 ⁇ m, and even more preferably 15 ⁇ m to 35 ⁇ m.
  • the first protective member preferably has a base material and a surface treatment layer formed on the base material.
  • the first protection member having the surface treatment layer may be arranged such that the surface treatment layer is located on the front side. Specifically, the surface treatment layer may be located on the outermost surface of the optical laminate 100a.
  • the surface treatment layer may have any suitable function. Examples of the surface treatment layer include a hard coat layer, an antireflection layer, an antisticking layer, and an antiglare layer.
  • the first protection member may have two or more surface treatment layers.
  • the antireflection layer is provided to prevent reflection of external light and the like.
  • the antireflection layer include a fluororesin layer, a resin layer containing nanoparticles (typically hollow nanoparticles, such as hollow nanosilica particles), or an antireflection layer having a nanostructure (e.g. moth-eye structure).
  • the thickness of the antireflection layer is preferably 0.05 ⁇ m to 1 ⁇ m.
  • methods for forming the resin layer include a sol-gel method, a thermosetting method using isocyanate, and an ionizing radiation curing method using a crosslinking monomer (e.g., polyfunctional acrylate) and a photopolymerization initiator (typically a photopolymerization method).
  • the antireflection layer is provided on the outermost surface of the first protective member, and an inner surface protection film is attached to the surface of the antireflection layer. According to the embodiment in which the antireflection layer is provided on the outermost surface of the first protective member, an excellent antireflection effect can be achieved in a display system in which a space is formed between the half mirror 18 and the first retardation member 20. Obtainable.
  • the hard coat layer preferably has sufficient surface hardness, excellent mechanical strength, and excellent light transparency.
  • the hard coat layer may be formed from any suitable resin.
  • the hard coat layer is typically formed from an ultraviolet curable resin. Examples of the ultraviolet curable resin include polyester, acrylic, urethane, amide, silicone, and epoxy resins.
  • the thickness of the hard coat layer is, for example, 0.5 ⁇ m or more, preferably 1 ⁇ m or more, and, for example, 20 ⁇ m or less, preferably 15 ⁇ m or less.
  • Adhesive layer 31 may be composed of any suitable adhesive. Specific examples include acrylic adhesives, rubber adhesives, silicone adhesives, polyester adhesives, urethane adhesives, epoxy adhesives, and polyether adhesives. By adjusting the type, number, combination, and blending ratio of monomers that form the base resin of the adhesive, as well as the amount of crosslinking agent, reaction temperature, reaction time, etc., adhesives can have desired characteristics depending on the purpose. can be prepared.
  • the base resin of the adhesive may be used alone or in combination of two or more types. As the base resin, acrylic resin is preferably used.
  • the adhesive layer is preferably composed of an acrylic adhesive.
  • the thickness of the adhesive layer is typically 1 ⁇ m or more, preferably 5 ⁇ m or more, more preferably 12 ⁇ m or more, and typically 60 ⁇ m or less, preferably 30 ⁇ m or less, more preferably 23 ⁇ m or less.
  • Release liner 61 is formed of any suitable resin film.
  • the material that is the main component of the resin film include polyethylene terephthalate (PET), polyethylene, and polypropylene.
  • PET polyethylene terephthalate
  • the materials for the resin film can be used alone or in combination.
  • the release liner may be transparent (eg, haze of 5% or less, and such as 3% or less) or non-transparent. When inspecting the optical laminate with a surface protection film attached with a release liner, the release liner is preferably transparent.
  • a release treatment layer may be provided on the surface of the release liner 61 that comes into contact with the adhesive layer 31.
  • the mold release treatment agent forming the mold release treatment layer include silicone mold release treatment agents, fluorine mold release treatment agents, and long chain alkyl acrylate type mold release treatment agents.
  • the mold release treatment agents can be used alone or in combination.
  • the thickness of the release treatment layer is typically 50 nm or more and 400 nm or less.
  • the thickness of the release liner is typically 5 ⁇ m or more, preferably 20 ⁇ m or more, and typically 60 ⁇ m or less, preferably 45 ⁇ m or less.
  • the thickness of the release liner is the thickness including the thickness of the mold release treatment layer.
  • FIG. 4 is a schematic cross-sectional view of another optical laminate that may be used in the display system illustrated in FIG. 2.
  • the optical laminate 100b includes an adhesive layer 32, a second retardation member 22, and a second protection member 42 in this order.
  • the second retardation member 22 and the second protection member 42 are laminated with an adhesive layer 53 in between.
  • the adhesive layer 53 is typically an adhesive layer or an adhesive layer, and preferably an adhesive layer.
  • the thickness of the adhesive layer is, for example, 0.05 ⁇ m to 30 ⁇ m.
  • the surface of the adhesive layer 32 is protected by a release liner 62 until it is ready for use.
  • the inner surface protection film and the outer surface protection film are attached to the surface of the optical laminate 100b on the second protection member 42 side.
  • the second retardation member 22 has a laminated structure of a second ⁇ /4 member 22a and a second positive C plate 22b. Unlike the illustrated example, the second positive C plate 22b may be located closer to the second protection member 42 than the second ⁇ /4 member 22a, and the second positive C plate 22b may be omitted. It's okay.
  • the second ⁇ /4 member 22a and the second positive C plate 22b are laminated, for example, via an adhesive layer (not shown).
  • the optical laminate 100b can be applied, for example, to manufacturing a display system illustrated in FIG. 2 in which the second retardation member 22 is integrally provided with the first lens portion 16. Specifically, by peeling off the release liner 62 from the optical laminate 100b and bonding it to the first lens part 16 via the adhesive layer 32, the second retardation member 22 is integrally attached to the first lens part 16. A display system provided can be manufactured.
  • the in-plane retardation Re (550) of the second ⁇ /4 member 22a is, for example, 100 nm to 190 nm, may be 110 nm to 180 nm, may be 130 nm to 160 nm, or may be 135 nm to 155 nm. Good too.
  • the second ⁇ /4 member preferably exhibits inverse dispersion wavelength characteristics in which the retardation value increases depending on the wavelength of the measurement light.
  • Re(450)/Re(550) of the second ⁇ /4 member is, for example, 0.75 or more and less than 1, and may be 0.8 or more and 0.95 or less.
  • the second ⁇ /4 member preferably exhibits a refractive index characteristic of nx>ny ⁇ nz.
  • the Nz coefficient of the second ⁇ /4 member is preferably 0.9 to 3, more preferably 0.9 to 2.5, even more preferably 0.9 to 1.5, and particularly preferably is 0.9 to 1.3.
  • the second ⁇ /4 member is formed of any suitable material that can satisfy the above characteristics.
  • the second ⁇ /4 member may be, for example, a stretched film of a resin film or an oriented solidified layer of a liquid crystal compound.
  • the same explanation as for the first ⁇ /4 member can be applied to the second ⁇ /4 member composed of a stretched resin film or an oriented solidified layer of a liquid crystal compound.
  • the first ⁇ /4 member and the second ⁇ /4 member may have the same configuration (for example, forming material, thickness, optical properties, etc.) or may have different configurations.
  • the retardation Rth (550) in the thickness direction of the second positive C plate 22b is preferably -50 nm to -300 nm, more preferably -70 nm to -250 nm, and still more preferably -90 nm to -200 nm. , particularly preferably -100 nm to -180 nm.
  • the in-plane retardation Re (550) of the second positive C plate is, for example, less than 10 nm.
  • the second positive C plate is formed of any suitable material that can satisfy the above characteristics.
  • the same explanation as for the first positive C plate can be applied to the constituent material of the second positive C plate.
  • the first positive C plate and the second positive C plate may have the same configuration (for example, forming material, thickness, optical properties, etc.) or may have different configurations.
  • the second protection member 42 typically includes a base material, and preferably includes a base material and a surface treatment layer formed on the base material.
  • the surface treatment layer may be located on the outermost surface of the optical laminate 100b.
  • the same explanation as for the first protective member can be applied.
  • the second retardation member 22 is integrated with the first lens portion 16, and the reflective polarizing member 14 is integrated with the second protection member 42.
  • an excellent antireflection effect can be obtained.
  • FIG. 5 is a schematic cross-sectional view of yet another optical laminate that can be used in the display system illustrated in FIG. 2.
  • the optical laminate 100c includes an adhesive layer 33, an absorptive polarizing member 11, a reflective polarizing member 14, and a third protection member 43 in this order.
  • the absorption axis of the absorption type polarization member 11 and the reflection axis of the reflection type polarization member 14 are arranged to be substantially parallel to each other, and the transmission axis of the absorption type polarization member 11 and the transmission axis of the reflection type polarization member 14 are arranged to be substantially parallel to each other. are arranged substantially parallel to each other.
  • the absorptive polarizing member 11, the reflective polarizing member 14, and the third protection member 43 are laminated with adhesive layers 54 and 55 interposed therebetween.
  • the adhesive layers 54 and 55 are typically adhesive layers or adhesive layers, preferably adhesive layers.
  • the thickness of the adhesive layer is, for example, 0.05 ⁇ m to 30 ⁇ m.
  • the surface of the adhesive layer 33 is protected by a release liner 63 until it is used.
  • the inner surface protection film and the outer surface protection film are attached to the third protection member 43 side surface of the optical laminate 100c.
  • the optical laminate 100c can be applied, for example, to manufacturing a display system of an embodiment that further includes an absorptive polarizing member between the reflective polarizing member 14 and the second lens part 24 in the display system illustrated in FIG. . Specifically, by peeling off the release liner 63 from the optical laminate 100c and bonding it to the second lens part 24 via the adhesive layer 33, the reflective polarizing member 14 and the absorbing polarizing member 11 are separated from each other by the second lens part 24. A display system integrated with the lens portion 24 can be manufactured.
  • the reflective polarizing member 14 can transmit polarized light parallel to its transmission axis (typically, linearly polarized light) while maintaining its polarized state, and can reflect light with other polarized states.
  • the cross transmittance (Tc) of the reflective polarizing member may be, for example, 0.01% to 3%.
  • the single transmittance (Ts) of the reflective polarizing member may be, for example, 43% to 49%, preferably 45 to 47%.
  • the degree of polarization (P) of the reflective polarizing member may be, for example, 92% to 99.99%.
  • the reflective polarizing member is typically composed of a film having a multilayer structure (sometimes referred to as a reflective polarizing film). Commercially available reflective polarizing films include, for example, 3M's product names "DBEF" and "APF” and Nitto Denko's product name "APCF”.
  • the third protection member 43 typically includes a base material, and preferably includes a base material and a surface treatment layer formed on the base material.
  • the surface treatment layer may be located on the outermost surface of the optical laminate 100c.
  • the same explanation as for the first protective member can be applied.
  • the second retardation member 22 is integrated with the first lens portion 16, and the reflective polarizing member 14 is integrated with the second protection member 43.
  • an excellent antireflection effect can be obtained.
  • the absorption type polarizing member 11, adhesive layer 33, and release liner 63 used in the optical laminate 100c are explained in the same manner as the polarizing member 10, adhesive layer 31, and release liner 61 used in the optical laminate 100a, respectively. can be applied.
  • a method of manufacturing a display system includes: Inspecting the optical laminate with a surface protection film according to item A for defects; Adhering another member to the side opposite to the side to which the inner surface protection film and the outer surface protection film are attached of the optical laminate with the surface protection film to obtain a secondary laminate with the surface protection film; Peeling the outer surface protection film from the secondary laminate with the surface protection film, inspecting the secondary laminate with the surface protection film for defects; and peeling the inner surface protection film from the secondary laminate with the surface protection film to obtain a secondary laminate; In this order.
  • the obtained secondary laminate is subjected to an assembly process and assembled with other members to form a display system.
  • an example of a method for manufacturing a display system using an optical laminate with a surface protection film having the optical laminate 100a illustrated in FIG. 3 will be described with reference to FIGS. 6A to 6E.
  • the optical laminate 200 with a surface protection film to be inspected has an optical laminate 100a, and an inner surface protection film 110 and an outer surface on the surface of the optical laminate 100a on the first protection member 41 side.
  • the protective film 120 is pasted outward in this order.
  • Defect inspection performed on the optical laminate with a surface protection film includes visual defect inspection and automatic optical inspection (AOI) using a known automatic defect inspection device.
  • the defect inspection may be of a transmission type or a reflection type. In one embodiment, the defect inspection is reflective.
  • an inspection light is irradiated from a light source onto the surface of the outer surface protection film 120 side of the optical laminate with a surface protection film 200, and the reflected light image is acquired by an imaging device C such as a line sensor or a two-dimensional camera. Then, defect detection is performed based on the acquired image data.
  • the defect inspection is transparent.
  • an inspection light is irradiated from a light source to the release liner 61 side surface of the optical laminate 200 with a surface protection film, a transmitted light image is acquired by the imaging device C, and based on the acquired image data, , performs defect detection. If necessary, the reflection type inspection and the transmission type inspection may be combined.
  • the inspection is performed in a clean room.
  • Detected defects include scratches, foreign objects, bubbles, dirt, and the like.
  • the size of the defect can be, for example, between 45 ⁇ m and 500 ⁇ m.
  • another surface protection film may be provided on the outside of the outer surface protection film and/or release liner of the optical laminate with a surface protection film to be inspected until it is subjected to inspection. By peeling off another surface protection film immediately before inspection, it is possible to prevent scratches, foreign matter, dirt, etc. from adhering to the outer surface protection film and/or release liner surface, and as a result, these can be removed from the optical laminate. It is possible to prevent erroneous detection, which is a drawback.
  • another surface protection film one is preferably used that has a lower adhesion force to the outer surface protection film or release liner than the adhesion force of the outer surface protection film or release liner to the adherend.
  • a secondary laminate with film is obtained.
  • the release liner 61 is peeled off from the optical laminate 200 with the surface protection film attached, and the release liner 61 is attached to another member 300 using the exposed adhesive layer 31.
  • a secondary laminate 400a is obtained.
  • the other member 300 is an optical member such as an organic EL panel or a liquid crystal cell, and the optical laminate with a surface protection film is bonded to the viewing side (front) surface thereof.
  • the optical laminate 200 with a surface protection film When attached to another member 300, the optical laminate 200 with a surface protection film may have a shape corresponding to the shape of the other member 300.
  • the optical laminate 200 with a surface protection film is formed into a long shape, and after the defect inspection described above, it can be processed into a desired shape by cutting, punching, machining, or the like.
  • the optical laminate 200 with a surface protection film may be subjected to defect inspection after being processed into a desired shape.
  • the outer surface protection film 120 is peeled off from the surface protection film-attached secondary laminate 400a, and the obtained surface protection film-attached secondary laminate 400b is inspected for defects.
  • An example of the defect inspection performed on the secondary laminate with a surface protection film is the same inspection as the defect inspection performed on the optical laminate 200 with a surface protection film.
  • the inner surface protection film 110 is peeled off from the surface protection film-attached secondary laminate 400b, which was determined to be good in the defect inspection, to obtain a secondary laminate 400c.
  • the secondary laminate 400c is subjected to an assembly process and assembled with other members (for example, the optical laminate shown in FIG. 4 or 5) to configure a display system.
  • the above manufacturing method it is possible to perform multiple defect inspections on the optical laminate while the surface is protected, and there is no need for scratches, dirt, etc. to adhere to the surface until just before it is incorporated into a display system. can be suitably prevented.
  • This effect occurs when processes such as manufacturing the optical laminate, manufacturing intermediate products (e.g. display elements) using the optical laminate, and manufacturing (assembly) the display system using the intermediate products are performed at different locations.
  • an optical laminate manufactured by an optical laminate manufacturer is inspected for defects in the form of an optical laminate with a surface protection film to which inner and outer surface protection films have been applied (e.g., FIG.
  • FIG. 6A Items judged to be good in the defect inspection are shipped as the first semi-finished product to a display element manufacturer; The display element manufacturer then converts the optical laminate with a surface protection film into liquid crystal cells, organic EL panels, etc.
  • a display element liquid crystal display element, organic EL display element, etc.
  • Fig. 6B A display element (liquid crystal display element, organic EL display element, etc.) is produced (for example, Fig. 6B); from here, the outer surface protection film is peeled off and the inner surface protection film is protected.
  • a defect inspection is performed on the display element in the state shown in FIG.
  • the display element which is ready for use after the inner surface protective film is peeled off by the display system manufacturer, can be assembled with other components (eg, FIG. 6E).
  • defects scratches, foreign objects, dirt, etc.
  • defect inspection when manufacturing a display element that is a second semi-finished product
  • prevention of defects when shipping the second semi-finished product.
  • the method of manufacturing the display system is not limited to the illustrated example.
  • the outer surface protective film may be peeled off before the release liner is peeled off and attached to another component, and a second defect inspection may be performed before attachment to another component. It's okay.
  • the inner surface protection film may be peeled off after the optical laminate is placed at a predetermined position of the display system.
  • the thickness is a value measured by the following measuring method.
  • ⁇ Thickness> The thickness was measured using a digital micrometer (manufactured by Anritsu Corporation, product name "KC-351C").
  • ⁇ In-plane phase difference or thickness direction phase difference> A sample was prepared by cutting out the central part in the width direction of the member to be measured into a square shape with a width of 50 mm and a length of 50 mm, with one side parallel to the width direction of the member. The in-plane retardation and thickness direction retardation of the sample were measured using "KOBRA-WPR" manufactured by Oji Scientific Instruments.
  • an isocyanurate of hexamethylene diisocyanate (“Coronate HX” manufactured by Tosoh Corporation)
  • a surfactant (“Aqualon” manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) HS-10''
  • Adhesive composition A was applied to the surface (corona treated surface) of a base material (PET film, "CE901-38" manufactured by KOLON, thickness 38 ⁇ m), and then dried to form an adhesive layer (thickness 10 ⁇ m). .
  • a release liner manufactured by Toyobo Co., Ltd., product number TG704 was attached to the surface of the adhesive layer opposite to the base material.
  • Adhesive composition B was applied to the surface (corona-treated surface) of a base material (PET film, manufactured by Mitsubishi Chemical Corporation, product number T100C38, thickness 38 ⁇ m), and then dried to form an adhesive layer (thickness 20 ⁇ m). Next, a release liner (manufactured by Toyobo Co., Ltd., product number TG704) was attached to the surface of the adhesive layer opposite to the base material.
  • a base material PET film, manufactured by Mitsubishi Chemical Corporation, product number T100C38, thickness 38 ⁇ m
  • ⁇ Surface protection film C> A PET film (product number T100C38, manufactured by Mitsubishi Chemical Corporation, thickness 38 ⁇ m) was used as a base material, and adhesive composition C was applied to the corona-treated surface of the film, followed by drying to form an adhesive layer (thickness 5 ⁇ m). Next, a release liner (manufactured by Toyobo Co., Ltd., product number TG704) was attached to the surface of the adhesive layer opposite to the base material. As a result, a surface protection film C was obtained.
  • Production of surface protection film D Same as Production Example 1C except that a PET film ("CE905-38" manufactured by KOLON, thickness 38 ⁇ m) was used as the base material, and adhesive composition C was applied to one side of the film to form an adhesive layer with a thickness of 15 ⁇ m. A surface protection film D was obtained.
  • a PET film (“CE905-38" manufactured by KOLON, thickness 38 ⁇ m) was used as the base material, and adhesive composition C was applied to one side of the film to form an adhesive layer with a thickness of 15 ⁇ m.
  • a surface protection film D was obtained.
  • the dyeing process was carried out in an aqueous solution at 30°C in which the weight ratio of iodine and potassium iodide was 1:7, and the iodine concentration was adjusted so that the single transmittance of the obtained absorption type polarizing film was 45.0%. It was stretched 1.4 times during processing. Furthermore, a two-stage crosslinking process was adopted for the crosslinking process, and the first crosslinking process was performed in an aqueous solution containing boric acid and potassium iodide at 40°C, and was stretched to 1.2 times.
  • the boric acid content of the aqueous solution for the first stage crosslinking treatment was 5.0% by weight, and the potassium iodide content was 3.0% by weight.
  • the film was stretched to 1.6 times while being treated in an aqueous solution containing boric acid and potassium iodide at 65°C.
  • the boric acid content of the aqueous solution for the second stage crosslinking treatment was 4.3% by weight, and the potassium iodide content was 5.0% by weight.
  • the cleaning treatment was performed using a potassium iodide aqueous solution at 20°C.
  • the potassium iodide content of the aqueous solution for cleaning treatment was 2.6% by weight.
  • the drying process was carried out at 70° C. for 5 minutes to obtain an absorption type polarizing film.
  • a triacetyl cellulose (TAC) resin film with HC (TAC thickness: 25 ⁇ m, HC thickness: 7 ⁇ m) was placed on one side of the obtained absorption type polarizing film, and a cycloolefin resin film (thickness: 13 ⁇ m) was placed on the other side. were laminated together as a protective layer.
  • the curable adhesive was coated to a total thickness of about 1 ⁇ m, and then bonded together using a roll machine. Thereafter, UV light was irradiated from the TAC film side to cure the adhesive. Thereby, a polarizing film A having the structure of [TAC film (protective layer)/absorption type polarizing film/COP film (protective layer)] was obtained.
  • the oligomerized reaction liquid in the first reactor was transferred to the second reactor.
  • temperature increase and pressure reduction in the second reactor were started, and the internal temperature was 240° C. and the pressure was 0.2 kPa in 50 minutes.
  • polymerization was allowed to proceed until a predetermined stirring power was reached.
  • nitrogen was introduced into the reactor to restore the pressure nitrogen was introduced into the reactor to restore the pressure, the produced polyester carbonate resin was extruded into water, and the strands were cut to obtain pellets.
  • polyester carbonate resin pellets
  • a single-screw extruder manufactured by Toshiba Machine Co., Ltd., cylinder temperature setting: 250°C
  • T-die width 200mm, setting temperature: 250°C
  • a long resin film with a thickness of 135 ⁇ m was produced using a film forming apparatus equipped with a chill roll (set temperature: 120 to 130° C.), a winder and a winder.
  • the obtained elongated resin film was stretched in the width direction at a stretching temperature of 143° C. and a stretching ratio of 2.8 times. Thereby, a stretched film ( ⁇ /4 member A) having a thickness of 47 ⁇ m was obtained.
  • Re(590) of ⁇ /4 member A was 143 nm
  • Re(450)/Re(550) was 0.86
  • the Nz coefficient was 1.12.
  • the coating solution was applied to a PET substrate subjected to vertical alignment treatment using a bar coater, and then heated and dried at 80° C. for 4 minutes to align the liquid crystal.
  • a positive C plate A having a thickness of 4 ⁇ m and an Rth (550) of ⁇ 100 nm was formed on the base material.
  • a leveling agent By adding 0.5% by weight of a leveling agent to acrylic resin raw material (manufactured by Dainippon Ink Co., Ltd., product name: GRANDIC PC1071), and further diluting with ethyl acetate so that the solid content concentration is 50% by weight, A material for forming a hard coat layer was prepared.
  • Coating liquid for forming antireflection layer 100 parts by weight of polyfunctional acrylate whose main component is pentaerythritol triacrylate (manufactured by Osaka Organic Chemical Industry Co., Ltd., product name "Viscoat #300", solid content 100% by weight), hollow nano silica particles (JGC Catalysts & Chemicals Co., Ltd.) 150 parts by weight, solid nano silica particles (manufactured by Nissan Chemical Industries, Ltd., trade name "MEK-2140Z-AC", solid content 20% by weight, weight average particle diameter 75 nm), solid content 30% 50 parts by weight (wt%, weight average particle diameter 10 nm), 12 parts by weight of a fluorine element-containing additive (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "KY-1203", solid content 20 wt%), and a photopolymerization initiator ( 3 parts by weight of "OMNIRAD907" (trade name, manufactured by BASF, solid content
  • a mixed solvent of TBA tertiary butyl alcohol
  • MIBK methyl isobutyl ketone
  • PMA propylene glycol monomethyl ether acetate
  • an acrylic polymer solution was prepared by adding 0.3 parts of benzoyl peroxide (BPO: Niper BMT manufactured by NOF Corporation) as a crosslinking agent to 100 parts of the solid content of the obtained acrylic polymer solution.
  • BPO benzoyl peroxide
  • the obtained adhesive composition was applied to the release-treated layer surface of a release liner (manufactured by Toray Industries, Inc., Therapel) and dried at 155° C. for 3 minutes to form an adhesive layer with a thickness of 20 ⁇ m.
  • Example 1 The above-mentioned adhesive layer A was attached to the COP protective layer side surface of the above-mentioned polarizing film A together with a release liner.
  • positive C plate A was bonded to ⁇ /4 member A via an ultraviolet curable adhesive (thickness after curing: 1 ⁇ m), and then the base material was peeled off to obtain a retardation member.
  • the obtained retardation member was bonded to the TAC film side surface of polarizing film A via an acrylic adhesive layer (thickness: 15 ⁇ m).
  • the surface of the retardation member on the ⁇ /4 member A side should be on the polarizing film A side, and the angle between the absorption axis of the absorption type polarizing film and the slow axis of the ⁇ /4 member A should be 45°.
  • the protective member A was bonded to the surface of the retardation member via an acrylic adhesive layer (thickness: 12 ⁇ m). At this time, the protective member A was attached so that the surface on the acrylic film side was on the retardation member side (in other words, so that the antireflection layer was on the outermost surface).
  • an optical laminate A having the configuration of [release liner/adhesive layer A/polarizing film A/ ⁇ /4 member A/positive C plate A/protective member A] was obtained.
  • the release liner was peeled off from the surface protection film D, and it was bonded to the protective member A side surface (antireflection layer surface) of the optical laminate A as an inner surface protection film.
  • the release liner was peeled off from the surface protection film A, and was bonded to the base material side surface of the surface protection film D as an outer surface protection film.
  • Example 2 An optical laminate with a surface protection film having the structure of [optical laminate A/surface protection film D/surface protection film B] was prepared in the same manner as in Example 1 except that surface protection film B was used as the outer surface protection film. I got a body.
  • the optical laminate with a surface protection film of the example suppresses the generation of air bubbles between the inner surface protection film and the outer surface protection film, and therefore, when subjected to defect inspection. , it can be seen that erroneous detection of air bubbles as a defect is prevented.
  • an optical laminate with a surface protection film having such a structure can be inspected for defects multiple times with the surface protection film attached, and the surface of the optical laminate can be inspected for defects until it is used for final assembly. can be suitably protected.
  • the optical laminate with a surface protection film of the example has excellent peeling stability.
  • the present invention is not limited to the above embodiments, and various modifications are possible.
  • it can be replaced with a configuration that is substantially the same as the configuration shown in the above embodiment, a configuration that has the same effect, or a configuration that can achieve the same objective.
  • optical laminate with a protective film according to the embodiment of the present invention can be used, for example, to manufacture goggles with a display such as VR goggles.
  • Second lens section 100 Optical laminate 110 First surface Protective film 120 Second surface protection film 200 Optical laminate with surface protection film

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention est un stratifié optique avec des films de protection de surface comprenant : un stratifié optique qui comprend au moins un élément optique et qui est utilisé pour des lunettes avec un dispositif d'affichage ; et un premier film de protection de surface et un second film de protection de surface fixés à une surface du stratifié optique dans l'ordre indiqué vers l'extérieur. Le premier film de protection de surface comprend un premier matériau de base et une première couche adhésive stratifiée sur le premier matériau de base, le second film de protection de surface comprend un second matériau de base et une seconde couche adhésive stratifiée sur le second matériau de base, l'épaisseur de la seconde couche adhésive est de 8 µm ou plus, et la résistance au pelage P1 du premier film de protection de surface au stratifié optique et la résistance au pelage P2 du second film de protection de surface au premier film de protection de surface satisfont à la relation P2/P1 ≤ 0,8.
PCT/JP2023/008561 2022-03-14 2023-03-07 Stratifié optique avec films de protection de surface et procédé de fabrication de système d'affichage WO2023176590A1 (fr)

Applications Claiming Priority (28)

Application Number Priority Date Filing Date Title
JP2022-039285 2022-03-14
JP2022039286 2022-03-14
JP2022039285 2022-03-14
JP2022-039286 2022-03-14
JP2022077679A JP2023166854A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022077676A JP2023166851A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022-077631 2022-05-10
JP2022-077632 2022-05-10
JP2022-077658 2022-05-10
JP2022077631A JP2023134316A (ja) 2022-03-14 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022077632A JP2023166825A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022077634A JP2023166827A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022-077634 2022-05-10
JP2022-077657 2022-05-10
JP2022-077677 2022-05-10
JP2022077659A JP2023166841A (ja) 2022-05-10 2022-05-10 表示システム、表示方法、表示体および表示体の製造方法
JP2022077633A JP2023166826A (ja) 2022-05-10 2022-05-10 表示方法
JP2022-077676 2022-05-10
JP2022-077679 2022-05-10
JP2022077677A JP2023166852A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022-077659 2022-05-10
JP2022-077678 2022-05-10
JP2022077657A JP2023134317A (ja) 2022-03-14 2022-05-10 表示システム、表示方法、表示体および表示体の製造方法
JP2022-077633 2022-05-10
JP2022077678A JP2023166853A (ja) 2022-05-10 2022-05-10 レンズ部、積層体、表示体、表示体の製造方法および表示方法
JP2022077658A JP2023166840A (ja) 2022-05-10 2022-05-10 表示システム、表示方法、表示体および表示体の製造方法
JP2022-211998 2022-12-28
JP2022211998 2022-12-28

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008268363A (ja) * 2007-04-17 2008-11-06 Riken Technos Corp 位相差フィルム用保護フィルム
JP2015027764A (ja) * 2013-07-30 2015-02-12 日東電工株式会社 表面保護フィルムおよび光学部材
WO2018016288A1 (fr) * 2016-07-22 2018-01-25 日東電工株式会社 Essemble de films optiques et son procédé de production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008268363A (ja) * 2007-04-17 2008-11-06 Riken Technos Corp 位相差フィルム用保護フィルム
JP2015027764A (ja) * 2013-07-30 2015-02-12 日東電工株式会社 表面保護フィルムおよび光学部材
WO2018016288A1 (fr) * 2016-07-22 2018-01-25 日東電工株式会社 Essemble de films optiques et son procédé de production

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