WO2022064593A1 - Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique - Google Patents

Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique Download PDF

Info

Publication number
WO2022064593A1
WO2022064593A1 PCT/JP2020/036018 JP2020036018W WO2022064593A1 WO 2022064593 A1 WO2022064593 A1 WO 2022064593A1 JP 2020036018 W JP2020036018 W JP 2020036018W WO 2022064593 A1 WO2022064593 A1 WO 2022064593A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbing film
shock absorbing
display panel
electronic device
meth
Prior art date
Application number
PCT/JP2020/036018
Other languages
English (en)
Japanese (ja)
Inventor
遼 ▲高▼橋
直己 高原
栄作 石川
圭俊 古園
要一郎 満生
宏明 高橋
純一 今泉
Original Assignee
昭和電工マテリアルズ株式会社
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.)
Filing date
Publication date
Application filed by 昭和電工マテリアルズ株式会社 filed Critical 昭和電工マテリアルズ株式会社
Priority to PCT/JP2020/036018 priority Critical patent/WO2022064593A1/fr
Publication of WO2022064593A1 publication Critical patent/WO2022064593A1/fr

Links

Images

Classifications

    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets

Definitions

  • the present invention relates to a method for manufacturing a product including a shock absorbing film, a brittle material member, and an electronic device.
  • one aspect of the present invention is to provide a shock absorbing film which is excellent in shock absorbing property and can be easily bonded to other members even under normal temperature and low pressure conditions.
  • One aspect of the present invention provides a shock absorbing film containing an acrylic polymer.
  • the shock absorbing film exhibits a glass transition temperature of 0 to 35 ° C. and a storage modulus of 0.1 to 10 GPa at a frequency of 1 ⁇ 10 4 Hz.
  • Another aspect of the present invention provides a method of manufacturing a product comprising a brittle material member, comprising attaching the shock absorbing film to the brittle material member at 20-30 ° C.
  • an electronic device comprising a housing forming an opening, a cover window closing the opening, and a display panel housed in the housing so as to face the cover window. ..
  • the housing has a back cover portion that faces the display panel on the opposite side of the cover window.
  • the electronic device further includes the shock absorbing film provided between the cover window and the display panel, or between the back cover portion and the display panel.
  • a shock absorbing film which is excellent in shock absorption and can be easily attached to another member even under normal temperature, low pressure or normal pressure conditions.
  • an electronic device provided with a display panel and having excellent impact resistance.
  • (meth) acryloyl means acryloyl or methacryloyl. This is also true for other similar terms.
  • FIG. 1 is a cross-sectional view showing an embodiment of a laminated film including a shock absorbing film.
  • the laminated film 15 shown in FIG. 1 has two separators 11 and 12 and a shock absorbing film 1 sandwiched between the separators 11.12.
  • the separators 11 and 12 may be, for example, resin films, and examples thereof include polyethylene terephthalate (PET), triacetyl cellulose (TAC), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), and polycarbonate (PC). ), Polyethylene (PI), Polyethylene (PE), Polypropylene (PP), Polyvinyl Alcohol (PVA), Polyvinyl Chloride (PVC), Cycloolefin Polymer (COC), Cycloolefin Polymer (COP), Norbornen Resin, Polyether Examples include films containing sulfones, cellophane, aromatic polyamides, or combinations thereof.
  • the separators 11 and 12 may have a mold-released surface, and the shock-absorbing film 1 may be provided on the mold-released surface.
  • the shock absorbing film 1 is a single-layer film containing an acrylic polymer as a main component.
  • the shock absorbing film 1 exhibits a glass transition temperature of 0 to 35 ° C. and a storage elastic modulus of 0.1 to 10 GPa at a frequency of 1 ⁇ 10 4 Hz.
  • the glass transition temperature (Tg) and the storage elastic modulus are values determined by the dynamic viscoelasticity measurement of the impact absorbing film 1.
  • the dynamic viscoelasticity of the shock absorbing film 1 was measured at ⁇ 40 ° C. in a tensile mode (frequency 1 Hz, strain amount 0.05%) and a heating rate of 5 ° C./min.
  • the glass transition temperature can be obtained from the viscoelastic curve (curve showing the relationship between the viscoelastic property and the temperature) obtained by measuring under the condition of raising the temperature from 1 to 80 ° C.
  • the glass transition temperature is the temperature at which tan ⁇ has the largest maximum value in the viscoelastic curve showing the relationship between tan ⁇ and temperature.
  • the storage elastic modulus at a frequency of 1 ⁇ 10 4 Hz is a value obtained from a master curve having a reference temperature of 25 ° C. obtained by the WLF method.
  • the dynamic viscoelasticity of the shock absorbing film 1 is measured while changing the frequency from 0.5 Hz to 50.0 Hz in the tensile mode (strain amount 0.05%). This is repeated for each temperature while raising the temperature from -50 ° C to 40 ° C by 1 ° C, and a master curve with a reference temperature of 25 ° C is obtained from the measurement results by the WLF formula, and 1 ⁇ 10 4 from the master curve.
  • the storage elastic modulus at the frequency of Hz is obtained.
  • the shock absorbing film 1 When the glass transition degree of the shock absorbing film 1 is 0 to 35 ° C., the shock absorbing film can have excellent bonding properties at room temperature and low pressure. As electronic devices become thinner, the members that make up the electronic devices tend to become thinner, so the importance of being able to easily bond them at room temperature and low pressure is increasing from the viewpoint of improving productivity. From the same viewpoint, the glass transition temperature of the shock absorbing film 1 may be 1 ° C. or higher, 2 ° C. or higher, 3 ° C. or higher, 4 ° C. or higher, 5 ° C. or higher, 6 ° C. or higher, or 7 ° C. or higher, 34. It may be °C or less, 33 °C or less, 32 °C or less, or 31 °C or less.
  • the storage elastic modulus of the shock absorbing film 1 at 0 ° C. is 0.1 to 10 GPa
  • the shock resistance of the electronic device into which the shock absorbing film 1 is introduced tends to be remarkably improved. Therefore, for example, in an electronic device provided with an ultra-thin glass base material, damage to the glass base material can be effectively suppressed by introducing the shock absorbing film 1.
  • the storage elastic modulus of the shock absorbing film 1 at 0 ° C. is 0.2 GPa or more, 0.3 GPa or more, 0.4 GPa or more, 0.5 GPa or more, 0.6 GPa or more, from the viewpoint of adhesiveness at room temperature and low pressure.
  • It may be 0.7 GPa or more, 0.8 GPa or more, 0.9 GPa or more, or 1.0 GPa or more, 9.0 GPa or less, 8.0 GPa or less, 7.0 GPa or less, 6.0 GPa or less, 5.0 GPa or less. It may be 4.0 GPa or less, or 3.0 GPa or less.
  • the glass transition temperature of the shock absorbing film 1 can be adjusted to 0 to 35 ° C. mainly based on the glass transition temperature of the acrylic polymer.
  • the glass transition temperature of the acrylic polymer is controlled by setting the type of monomer and the copolymerization ratio based on the glass transition temperature theoretically calculated based on the glass transition temperature of the homopolymer of the monomer. Is possible. Those skilled in the art will be able to utilize many monomers with known homopolymer glass transition temperatures. Introducing a small molecule compound into the shock absorbing film 1 also tends to lower the glass transition temperature of the shock absorbing film 1.
  • Monomers that provide homopolymers with high glass transition temperatures tend to increase the storage elastic modulus of the impact absorbing film 1 at 0 ° C.
  • a monomer having an aromatic ring or an aliphatic ring can also appropriately increase the storage elastic modulus of the impact absorbing film 1 at 0 ° C.
  • a glass transition temperature of 0 to 35 ° C. and a glass transition temperature of 1 ⁇ 10 4 Hz It is possible to form the shock absorbing film 1 that satisfies both the requirements of the storage elastic modulus of 0.1 to 10 GPa at a frequency.
  • the thickness of the shock absorbing film 1 may be, for example, 5 to 1000 ⁇ m or 25 to 300 ⁇ m.
  • the acrylic polymer is a polymer mainly composed of monomer units derived from a monomer having a (meth) acryloyl group.
  • the acrylic polymer may further contain a monomer unit derived from a monomer other than the monomer having a (meth) acryloyl group.
  • the ratio of the monomer unit derived from the monomer having a (meth) acryloyl group is 50 to 100% by mass, 60 to 100% by mass, 70 with respect to the total amount of the monomer units constituting the acrylic polymer. It may be up to 100% by mass, 80 to 100% by mass, or 90 to 100% by mass.
  • Examples of monomers having a (meth) acryloyl group are (meth) acrylic acid ester, (meth) acrylic acid, N, N-dialkyl (meth) acrylamide, N-alkyl (meth) acrylamide, and (meth).
  • Acrylamide can be mentioned.
  • the type of monomer and the copolymerization ratio are selected in consideration of the Tg of the impact absorbing film 1, the storage elastic modulus, and the like.
  • the (meth) acrylic acid ester may be a (meth) acrylic acid alkyl ester having an alkyl group which may have a substituent.
  • An acrylic polymer containing a monomer unit derived from an alicyclic (meth) acrylate having an alkyl group containing an alicyclic group can contribute to further improvement in impact resistance and weather resistance.
  • Examples of alicyclic (meth) acrylates are dicyclopentenyl (meth) acrylate, cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, 2-methyl-2-adamantyl (meth) acrylate, and 2-ethyl-2. -Adamantane (meth) acrylate can be mentioned.
  • the proportion of the monomer unit derived from the alicyclic (meth) acrylate may be 40 to 90% by mass or 50 to 80% by mass based on the mass of all the monomer units in the acrylic polymer. ..
  • Examples of other (meth) acrylic acid alkyl esters include n-butyl acrylate and 2-ethylhexyl acrylate.
  • the alkyl group of the (meth) acrylic acid alkyl ester may be substituted with a substituent such as an epoxy group, a hydroxy group or a frill group.
  • Examples of (meth) acrylic acid alkyl esters having substituents include glycidyl (meth) acrylates, 2-hydroxyethyl (meth) acrylates, and tetrahydrofurfuryl acrylates.
  • the alkyl group of N, N-dialkyl (meth) acrylamide and N-alkyl (meth) acrylamide may be substituted with a substituent such as an epoxy group, a hydroxy group or a frill group.
  • a substituent such as an epoxy group, a hydroxy group or a frill group.
  • Examples of N, N-dialkyl (meth) acrylamide include N, N-dimethyl (meth) acrylamide.
  • the acrylic polymer is a monomer unit derived from an alicyclic (meth) acrylate and other monomers, and the homopolymer of the monomer has a glass transition temperature of 40 ° C. or higher. It may contain a monomer unit derived from.
  • Other monomers that give homopolymers above 40 ° C are, for example, glycidyl methacrylate (homorpolymer glass transition temperature: 46 ° C), 2-hydroxyethyl methacrylate (homoromer glass transition temperature: 55 ° C), and N.
  • N-Dimethylacrylamide glass transition temperature of homopolymer: 119 ° C.
  • the total ratio of the monomer unit derived from the alicyclic (meth) acrylate and the monomer unit derived from other monomers giving a homopolymer of 40 ° C. or higher is the total unit in the acrylic polymer. It may be less than 65% by mass based on the mass of the polymer unit.
  • the weight average molecular weight of the acrylic polymer may be 100,000 to 1,000,000.
  • the weight average molecular weight of the acrylic polymer may be 100,000 to 900,000, 200,000 to 800,000, 300,000 to 700,000, or 400,000 to 600,000.
  • the weight average molecular weight here means a conversion value based on the calibration curve of standard polystyrene measured by gel permeation chromatography.
  • the shock absorbing film 1 may contain only the acrylic polymer, and may further contain other components if necessary.
  • the content of the acrylic polymer may be 40 to 100% by mass or 50 to 100% by mass with respect to the mass of the shock absorbing film 1.
  • the shock absorbing film 1 may further contain a reactive compound having a reactive group such as an epoxy group or a hydroxy group in addition to the acrylic polymer.
  • a reactive compound having a reactive group that reacts with the functional group may be used.
  • the formulation of the reactive compound tends to lower the glass transition temperature of the shock absorbing film 1.
  • the reactive compound may be an alicyclic epoxy resin, and examples thereof include 3', 4'-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate.
  • the content of the reactive compound may be 0 to 50 parts by mass with respect to 100 parts by mass of the acrylic polymer.
  • the brittle material member By attaching the shock absorbing film 1 to the brittle material member, the brittle material member can be reinforced.
  • the brittle material member may be, for example, an inorganic glass base material.
  • the shock absorbing film 1 may be used, for example, in a method for manufacturing a product comprising a brittle material member, which comprises attaching the shock absorbing film to the brittle material member at 20 to 30 ° C. After pasting at room temperature, the obtained laminate may be heated and pressurized.
  • FIG. 2 is a cross-sectional view showing an embodiment of an electronic device provided with a shock absorbing film.
  • the electronic device 100 shown in FIG. 2 includes a housing 20 forming an opening 20A, a cover window 30 closing the opening 20A of the housing 20, and a display panel 40 housed in the housing 20 so as to face the cover window 30.
  • the housing 20 includes a back cover portion 21 facing the display panel 40 on the opposite side of the cover window 30, a side wall portion 22 provided between the end portion of the back cover portion 21 and the end portion of the cover window 30. It has an internal plate portion 23 extending in a direction parallel to the display panel 40 inside the side wall portion 22.
  • a display panel 40 is provided on the internal plate portion 23.
  • the electronic device 100 further includes a touch sensor unit 45, a polarizing film 47, and a shock absorbing film 1 provided on the cover window 30 side of the display panel 40, and these are laminated in this order from the display panel 40 side.
  • the electronic device 100 further includes a battery 60, a decorative layer 50, and a shock absorbing film 1 provided on the back cover portion 21 side of the display panel 40, and these are laminated in this order from the display panel 40 side.
  • the surface of the display panel 40 on the cover window 30 side is the surface on which the image is displayed.
  • the display panel 40 may be, for example, an organic EL display panel or a liquid crystal display panel. When the electronic device 100 is a foldable electronic device in which the image display surface is foldable, an organic EL display panel is suitable.
  • the shock absorbing film 1 is provided between the cover window 30 and the display panel 40, and between the back cover portion 21 and the display panel 40.
  • the shock absorbing film 1 is adjacent to the cover window 30 or the back cover portion 21, but an optical adhesive layer or the like is formed between the shock absorbing film 1 and the cover window 30 or the back cover portion 21.
  • Other layers may be provided.
  • another layer such as an optical adhesive layer may be provided between the shock absorbing film 1 and the touch sensor unit 45 or the decorative layer 50.
  • the position where the shock absorbing film 1 is arranged is not particularly limited, and the shock absorbing film 1 can be provided so as to be sandwiched between arbitrary constituent members.
  • the cover window 30 has a sheet-shaped transparent base material.
  • the transparent base material may be a glass base material (inorganic glass base material) or a plastic base material (for example, a polyimide base material).
  • the transparent base material constituting the cover window 30 is a thin glass base material or a plastic base material.
  • the thickness of the glass substrate mounted on the foldable electronic device may be 500 ⁇ m or less, 400 ⁇ m or less, or 300 ⁇ m or less, or 10 ⁇ m or more.
  • Such a very thin glass base material tends to be easily damaged by an impact from the outside, but by providing the shock absorbing film 1, damage to the thin glass base material can be suppressed.
  • the back cover portion 21 may have, for example, a glass base material, a plastic base material, or a ceramic base material.
  • the back cover portion 21 may be a thin glass base material as described above that enables folding of the electronic device 100. Even in that case, the shock absorbing film 1 can prevent the thin glass substrate from being damaged.
  • the weight average molecular weight of each acrylic polymer was measured as a conversion value based on the calibration curve of standard polystyrene by gel permeation chromatography under the following conditions.
  • a coating solution of test number # 18 100 parts by mass of acrylic polymer, 10 parts by mass of triethylene glycol bis (2-ethylhexanoate (3GO, Daicel Co., Ltd.) and 100 parts by mass of methyl ethyl ketone are mixed to obtain a coating solution of test number # 18.
  • Each coating liquid was applied to a heavy peel separator (a polyethylene terephthalate film subjected to heavy peel treatment).
  • the coating film was dried by heating to form a shock absorbing film having a thickness of 100 ⁇ m.
  • a light release separator was laminated on the surface of the above by roll lamination to obtain a laminated film composed of a heavy release separator, a shock absorbing film and a light release separator.
  • Transducer ⁇ Measurement mode Tension ⁇ Axial Force: 30.0 g ⁇ Sensitivity: 3.0 g ⁇ Proportional force Mode: Force tracking, 2% ⁇ Auto strain adjustment mode: Enable ⁇ Strain adjust: 15.0% ⁇ Minimum strain: 0.01% ⁇ Maximum strain: 5.0% ⁇ Minimum force: 5.0% ⁇ Maximum force: 300 g Measurement conditions ⁇ Test Parameters, Start temperature: -50 °C ⁇ Soak time: 30 seconds ⁇ End temperature: 40 °C ⁇ Temperature step: 1 °C ⁇ Strain: 0.05% ⁇ Logarithmic sweep mode ⁇ Angular frequency: 0.5 Hz to 50.0 Hz ⁇ Points per decade: 3 From the measurement results, a master curve with a reference temperature of 25 ° C.
  • TTS Wizard the storage elastic modulus at a reference temperature of 25 ° C. and a frequency of 1 ⁇ 10 4 Hz was obtained.
  • TTS Wizard the data analysis of "TTS Wizard" in Trios (V3.3.1.4246). The conditions for data analysis are as follows.
  • TTS Options -Auto-shift y variable All y variable ⁇ Y shit base: Temperature only ⁇ Auto-shit type: X only ⁇ Remove shift zone on end session: No TTS Set Reference Curve ⁇ Curve Temperature: 25.0 °C TTS Generate Master Curve ⁇ Generate at Reference temperature ⁇ Model: WLF
  • the light release separator was peeled off from the laminated film to expose the surface of the shock absorbing film. Subsequently, the shock absorbing film was attached to a float glass having a length of 110 mm, a width of 110 mm, and a thickness of 0.7 mm at room temperature, and pressed against the float glass with a roller. The double peel separator was peeled off to expose the surface of the shock absorbing film, and the exposed surface was attached to a float glass having a length of 110 mm, a width of 110 mm, and a thickness of 0.7 mm in a vacuum state at room temperature using a vacuum laminating machine. ..
  • a laminate having two float glasses and a shock absorbing film sandwiched between them is heated and pressed by an autoclave under the conditions of a temperature of 80 ° C., a pressure of 0.5 MPa, and a holding for 30 minutes to obtain a bondability evaluation sample. rice field.
  • Adhesiveness evaluation Bubbles remaining on the entire surface of the sample were visually confirmed, and the adhesiveness was judged according to the following criteria. OK: No residual bubbles NG: With residual bubbles
  • the obtained laminate was allowed to stand on an aluminum plate having a length of 100 mm, a width of 100 mm, and a thickness of 5 mm.
  • a ballpoint pen weighing 10.9 g and having a tip radius of 0.25 mm was freely dropped from a height of 10 cm toward the laminate.
  • OLS5000 manufactured by Olympus Corporation, measurement SOFTWEAR.VERSION 1.2.1.4807 the 3D depth of the deformation marks Recorded information.
  • the recorded 3D depth information was analyzed by an analysis program (OLS5000 manufactured by Olympus Corporation, analysis SOFTWEAR.VERSION 1.2.1.116), and the maximum depth of deformation marks was determined.
  • volume V1 of the deformation mark of each shock absorbing film was calculated from the formula for obtaining the volume of the spherical cap.
  • the volume V0 of the deformation mark when the ballpoint pen was dropped directly toward the aluminum plate without the shock absorbing film was also obtained.
  • the volume relaxation rate of the deformation mark due to the shock absorbing film was calculated by the following formula.
  • a large volume relaxation rate means high shock absorption.
  • Volume relaxation rate (%) ⁇ (V0-V1) / V0 ⁇ ⁇ 100
  • the impact resistance of each impact absorbing film was determined according to the following criteria.
  • NG Volume relaxation rate is less than 50%
  • shock-absorbing films exhibiting a glass transition temperature of 0-35 ° C. and a storage modulus of 0.1-10 GPa at a frequency of 1 ⁇ 10 4 Hz are ready for bonding and bonding. It was confirmed that it is excellent in both impact resistance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne: un film d'absorption des chocs qui comprend un polymère acrylique, a une température de transition vitreuse de 0 à 35 °C, et présente un module de stockage de 0,1 à 10 GPa à une fréquence de 1×104 Hz; et un appareil électronique équipé de celui-ci.
PCT/JP2020/036018 2020-09-24 2020-09-24 Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique WO2022064593A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/036018 WO2022064593A1 (fr) 2020-09-24 2020-09-24 Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/036018 WO2022064593A1 (fr) 2020-09-24 2020-09-24 Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique

Publications (1)

Publication Number Publication Date
WO2022064593A1 true WO2022064593A1 (fr) 2022-03-31

Family

ID=80844616

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/036018 WO2022064593A1 (fr) 2020-09-24 2020-09-24 Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique

Country Status (1)

Country Link
WO (1) WO2022064593A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004263084A (ja) * 2003-03-03 2004-09-24 Nitto Denko Corp プラズマディスプレイ用フィルタの直貼り用粘着剤
WO2007029557A1 (fr) * 2005-09-01 2007-03-15 Mitsubishi Plastics, Inc. Feuille adhésive sensible à la pression
JP2015042708A (ja) * 2013-08-26 2015-03-05 日東電工株式会社 発泡シート
WO2015152334A1 (fr) * 2014-04-03 2015-10-08 積水化学工業株式会社 Matériau de remplissage inter-couches pour un panneau tactile, et corps stratifié
JP2016166346A (ja) * 2010-12-10 2016-09-15 日立化成株式会社 光学用粘着材樹脂組成物、光学用粘着材シート、画像表示装置、光学用粘着材シートの製造方法及び画像表示装置の製造方法
WO2018079732A1 (fr) * 2016-10-31 2018-05-03 日立化成株式会社 Verre feuilleté et matériau de film pour couche intermédiaire de verre feuilleté
JP2019164294A (ja) * 2018-03-20 2019-09-26 日立化成株式会社 画像表示装置、光硬化性樹脂組成物、及びフィルム材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004263084A (ja) * 2003-03-03 2004-09-24 Nitto Denko Corp プラズマディスプレイ用フィルタの直貼り用粘着剤
WO2007029557A1 (fr) * 2005-09-01 2007-03-15 Mitsubishi Plastics, Inc. Feuille adhésive sensible à la pression
JP2016166346A (ja) * 2010-12-10 2016-09-15 日立化成株式会社 光学用粘着材樹脂組成物、光学用粘着材シート、画像表示装置、光学用粘着材シートの製造方法及び画像表示装置の製造方法
JP2015042708A (ja) * 2013-08-26 2015-03-05 日東電工株式会社 発泡シート
WO2015152334A1 (fr) * 2014-04-03 2015-10-08 積水化学工業株式会社 Matériau de remplissage inter-couches pour un panneau tactile, et corps stratifié
WO2018079732A1 (fr) * 2016-10-31 2018-05-03 日立化成株式会社 Verre feuilleté et matériau de film pour couche intermédiaire de verre feuilleté
JP2019164294A (ja) * 2018-03-20 2019-09-26 日立化成株式会社 画像表示装置、光硬化性樹脂組成物、及びフィルム材

Similar Documents

Publication Publication Date Title
KR102323386B1 (ko) 점착제 부착 수지 필름 및 그것을 이용한 광학 적층체
KR101114924B1 (ko) 프라이머 코팅 조성물, 이를 포함하는 광학 필름 및 이를 포함하는 편광판
JP2018055098A (ja) 表示装置用ウィンドウおよび表示装置
JP6048297B2 (ja) 光学積層体及びそれを用いた表示装置
JP5821309B2 (ja) 光拡散性粘着シート、偏光板及び液晶表示パネル
JP6206070B2 (ja) 粘着剤付き樹脂フィルム及びそれを用いた光学積層体
JP2018507276A (ja) 粘着剤組成物、これから形成された粘着フィルムおよびこれを含むディスプレイ部材
JP2007332341A5 (fr)
JP2007212995A5 (fr)
JP6638239B2 (ja) 光学積層体及び液晶表示装置
KR101780542B1 (ko) 점착 필름 및 이를 포함하는 플렉시블 디스플레이 장치
JP2014529646A (ja) 導光性液状接着剤及びこれを用いたタッチセンシティブディスプレイ
JP6043315B2 (ja) 偏光子保護フィルム、その製造方法、偏光板、光学フィルムおよび画像表示装置
JP2017211433A (ja) 偏光フィルム、粘着剤層付き偏光フィルム、及び画像表示装置
KR20160034219A (ko) 편광판
KR102063207B1 (ko) 점착필름, 이를 포함하는 광학부재 및 이를 포함하는 광학표시장치
KR102230902B1 (ko) 활성 에너지선 중합성 수지 조성물 및 적층체
WO2022064593A1 (fr) Film d'absorption des chocs, procédé de fabrication d'un produit pourvu d'un élément en matériau fragile, et appareil électronique
JP2016212443A (ja) 光学フィルム積層体及びその製造方法
JP5392890B2 (ja) 偏光板用接着剤、偏光板、その製造方法、光学フィルムおよび画像表示装置
JP6943081B2 (ja) 粘着剤組成物、粘着シートおよび積層体
JP7462597B2 (ja) 円偏光板、光学積層体及び画像表示装置
JP7447404B2 (ja) 粘着シート、バックライトユニット及び液晶表示装置
KR20220084269A (ko) 광확산 필름 및 광확산 필름을 구비하는 편광판
JP2008169394A (ja) ホットメルト型紫外線架橋透明粘着シート及び積層体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20955187

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20955187

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP