WO2022071213A1 - Feuille adhésive optique fixée à un séparateur - Google Patents

Feuille adhésive optique fixée à un séparateur Download PDF

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Publication number
WO2022071213A1
WO2022071213A1 PCT/JP2021/035340 JP2021035340W WO2022071213A1 WO 2022071213 A1 WO2022071213 A1 WO 2022071213A1 JP 2021035340 W JP2021035340 W JP 2021035340W WO 2022071213 A1 WO2022071213 A1 WO 2022071213A1
Authority
WO
WIPO (PCT)
Prior art keywords
less
separator
adhesive sheet
sensitive adhesive
foreign matter
Prior art date
Application number
PCT/JP2021/035340
Other languages
English (en)
Japanese (ja)
Inventor
和広 山村
新 藤原
崇弘 野中
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.)
Filing date
Publication date
Priority claimed from JP2021155317A external-priority patent/JP2022058224A/ja
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to KR1020237009952A priority Critical patent/KR20230075431A/ko
Priority to CN202180066935.8A priority patent/CN116234696A/zh
Publication of WO2022071213A1 publication Critical patent/WO2022071213A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/405—Adhesives in the form of films or foils characterised by release liners characterised by the substrate of the release liner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature

Definitions

  • the light-transmitting adhesive sheet (optical adhesive sheet) is used in the manufacture of display panels such as organic EL panels.
  • the display panel has a laminated structure including a pixel panel, a cover member, and the like.
  • the optical adhesive sheet is used for joining elements included in the laminated structure on the light emitting side (image display side) of the pixel panel.
  • the optical adhesive sheet is an adhesive sheet arranged at a place where light passes in the display panel.
  • the optical pressure-sensitive adhesive sheet is manufactured, for example, in the form of an optical pressure-sensitive adhesive sheet with a separator in which one side or both sides of the sheet is coated with a separator (peeling liner).
  • a technique relating to such an optical adhesive sheet is described in, for example, Patent Document 1 below.
  • the present invention provides an optical adhesive sheet with a separator suitable for reducing the power consumption of a display panel.
  • First step The optical adhesive sheet with a separator having a plan view size of 50 mm ⁇ 50 mm is prepared as a sample for evaluation, and the inner region (30 mm ⁇ 30 mm) surrounded by the outer region in the sample is imaged by the camera device.
  • the sample is set in the apparatus in a state where it can be used.
  • Second step While irradiating the sample with inspection light from the white LED light source, the camera device is used to receive the sample transmitted light and / or the sample reflected light, and the received light data is transmitted over the inner region. get.
  • Third step Using the received light data, the position information and the projected image information of the foreign matter on the projection surface of the plan view projection of the inner region are derived.
  • the present invention [9] includes the optical pressure-sensitive adhesive sheet with a separator according to any one of the above [1] to [8], wherein the separator has a surface with a surface roughness Ra of 20 nm or less.
  • the ratio of the total projected area of bubbles on the projection surface of the plan view projection is preferably 10% or less, more preferably 8% or less, still more preferably 6%.
  • it is particularly preferably 4% or less, further preferably 2% or less, particularly preferably 1% or less, and extremely preferably 0%.
  • Such a configuration is suitable for supplying the optical adhesive sheet 20 having a high degree of cleanliness in the process of manufacturing the display panel, and is therefore suitable for reducing the power consumption of the display panel.
  • Examples of the nitrogen-containing monomer include a nitrogen-containing vinyl-based monomer and a cyanoacrylate monomer.
  • Examples of the nitrogen-containing vinyl-based monomer include N-vinylpyrrolidone, methylvinylpyrrolidone, vinylpyridine, vinylpiperidone, vinylpyrimidine, vinylpiperazine, vinylpyrazine, vinylpyrrole, vinylimidazole, vinyloxazole, vinylmorpholine, and (meth) acryloylmorpholine. , N-vinylcarboxylic acid amides, and N-vinylcaprolactam.
  • Examples of the cyanoacrylate-based monomer include acrylonitrile and methacrylonitrile. From the viewpoint of ensuring a cohesive force in the pressure-sensitive adhesive layer 21 and realizing a good adhesive force, N-vinylpyrrolidone is preferably used as the nitrogen-containing monomer.
  • isocyanate cross-linking agent for example, polyisocyanate having two or more isocyanate groups in one molecule is used.
  • isocyanate cross-linking agent examples include lower aliphatic polyisocyanates, alicyclic isocyanates, aromatic isocyanates, and isocyanate adducts.
  • the lower aliphatic polyisocyanates include butylene diisocyanate and hexamethylene diisocyanate.
  • alicyclic isocyanates include cyclopentylene diisocyanate, cyclohexylene diisocyanate, and isophorone diisocyanate.
  • the acrylic base polymer has a high gel fraction with a small crosslink point density.
  • the molecular weight (length of the polymer chain) of the base polymer may be increased.
  • the prepolymer composition can be prepared, for example, by partially polymerizing (prepolymerizing) a composition (composition for forming a prepolymer) in which a monomer component constituting an acrylic base polymer and a polymerization initiator are mixed.
  • the monomer component in the composition for forming a prepolymer is preferably a monofunctional monomer component among the monomer components constituting the acrylic base polymer.
  • the monofunctional monomer component is, for example, the above-mentioned (meth) acrylic acid alkyl ester and a polar group-containing monomer.
  • the composition for forming a prepolymer may contain a polyfunctional monomer in addition to the monofunctional monomer. For example, a part of the polyfunctional monomer may be contained in the composition for forming a prepolymer, and the remainder of the polyfunctional monomer component may be added after the prepolymerization to carry out the main polymerization.
  • the present invention will be specifically described below with reference to examples, but the present invention is not limited to the examples.
  • the specific numerical values such as the compounding amount (content), the physical property value, the parameter, etc. described below are the compounding amounts corresponding to them described in the above-mentioned "form for carrying out the invention” (forms for carrying out the invention). It can be replaced with an upper limit (numerical value defined as “less than or equal to” or “less than”) or a lower limit (numerical value defined as "greater than or equal to” or “greater than or equal to”) such as content), physical property value, and parameter.
  • silicone-based release layer In the formation of the silicone-based release layer, first, 30 parts by mass of an additive-type silicone composition (trade name "LTC761", manufactured by Toray Dow Corning) and a silicone dispersion (trade name "BY 24-850", Toray Co., Ltd.) A mixture of 0.9 parts by mass of Dow Corning and 2 parts by mass of a platinum catalyst for curing silicone (trade name "SRX 212", manufactured by Toray Dow Corning) is mixed with a mixed solvent of toluene and hexane (toluene and hexane). The volume ratio was diluted by 1: 1) to prepare a release agent solution.
  • an additive-type silicone composition trade name "LTC761”
  • silicone dispersion trade name "BY 24-850”, Toray Co., Ltd.
  • a mixture of 0.9 parts by mass of Dow Corning and 2 parts by mass of a platinum catalyst for curing silicone (trade name "SRX 212”, manufactured by Toray Dow Corning) is mixed with a mixed solvent of to

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

Une feuille adhésive (X) selon la présente invention est une feuille adhésive optique fixée à un séparateur comprenant une couche adhésive (20) et un séparateur (10) disposé sur un côté dans le sens de l'épaisseur de la couche adhésive (20). La feuille adhésive (X) présente un rapport total entre une zone de projection de corps étrangers présentant une longueur maximale de 15 à 30 µm sur une surface de projection plane de 20 % ou moins, comme évalué par un procédé d'évaluation prédéterminé, et le nombre de corps étrangers présentant une longueur maximale de 30 µm ou plus qui n'est pas supérieur à 1.
PCT/JP2021/035340 2020-09-30 2021-09-27 Feuille adhésive optique fixée à un séparateur WO2022071213A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020237009952A KR20230075431A (ko) 2020-09-30 2021-09-27 세퍼레이터 부가 광학 점착 시트
CN202180066935.8A CN116234696A (zh) 2020-09-30 2021-09-27 带分隔件的光学粘合片

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2020166491 2020-09-30
JP2020-166491 2020-09-30
JP2021-155317 2021-09-24
JP2021155317A JP2022058224A (ja) 2020-09-30 2021-09-24 セパレータ付き光学粘着シート

Publications (1)

Publication Number Publication Date
WO2022071213A1 true WO2022071213A1 (fr) 2022-04-07

Family

ID=80951631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/035340 WO2022071213A1 (fr) 2020-09-30 2021-09-27 Feuille adhésive optique fixée à un séparateur

Country Status (4)

Country Link
KR (1) KR20230075431A (fr)
CN (1) CN116234696A (fr)
TW (1) TW202221070A (fr)
WO (1) WO2022071213A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154689A (ja) * 2003-11-28 2005-06-16 Hitachi Chem Co Ltd セパレータ付き感圧型接着シート及び光学部材組立体並びにその組立方法
JP2008302580A (ja) * 2007-06-07 2008-12-18 Nitto Denko Corp 光学フィルム用粘着シート、その製造方法、粘着型光学フィルムおよび画像表示装置
JP2013060555A (ja) * 2011-09-14 2013-04-04 Lintec Corp 離型フィルム及びその製造方法
JP2015078251A (ja) * 2013-10-15 2015-04-23 三菱樹脂株式会社 基材レス両面粘着シート
JP2020083908A (ja) * 2018-11-15 2020-06-04 王子ホールディングス株式会社 積層シート

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4790472B2 (ja) 2006-03-31 2011-10-12 三井化学株式会社 粘着フィルム用セパレーター

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154689A (ja) * 2003-11-28 2005-06-16 Hitachi Chem Co Ltd セパレータ付き感圧型接着シート及び光学部材組立体並びにその組立方法
JP2008302580A (ja) * 2007-06-07 2008-12-18 Nitto Denko Corp 光学フィルム用粘着シート、その製造方法、粘着型光学フィルムおよび画像表示装置
JP2013060555A (ja) * 2011-09-14 2013-04-04 Lintec Corp 離型フィルム及びその製造方法
JP2015078251A (ja) * 2013-10-15 2015-04-23 三菱樹脂株式会社 基材レス両面粘着シート
JP2020083908A (ja) * 2018-11-15 2020-06-04 王子ホールディングス株式会社 積層シート

Also Published As

Publication number Publication date
CN116234696A (zh) 2023-06-06
KR20230075431A (ko) 2023-05-31
TW202221070A (zh) 2022-06-01

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