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WO2012111661A1 - Bande de support tab et bande tab - Google Patents

Bande de support tab et bande tab Download PDF

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Publication number
WO2012111661A1
WO2012111661A1 PCT/JP2012/053386 JP2012053386W WO2012111661A1 WO 2012111661 A1 WO2012111661 A1 WO 2012111661A1 JP 2012053386 W JP2012053386 W JP 2012053386W WO 2012111661 A1 WO2012111661 A1 WO 2012111661A1
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WO
WIPO (PCT)
Prior art keywords
group
repeating unit
carrier tape
tab
liquid crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/053386
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English (en)
Japanese (ja)
Inventor
細田　朋也
光男 前田
岡本　敏
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of WO2012111661A1 publication Critical patent/WO2012111661A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/38—Polymers
    • C09K19/3804—Polymers with mesogenic groups in the main chain
    • C09K19/3809—Polyesters; Polyester derivatives, e.g. polyamides
    • H10W72/701—

Definitions

  • the present invention relates to a carrier tape for tabs composed of liquid crystal polyester.
  • the present invention also relates to a tab tape using the tab carrier tape.
  • a TAB (Tape Automated Automated Bonding) type is widely used because it can be thinned, miniaturized, mounted with a high density, and has a high number of pins, and is excellent in high-speed signal propagation.
  • a tab tape used for the tab type package a three-layer tab tape composed of a base layer, an adhesive layer and a copper layer and a two-layer tab tape composed of a base layer and a copper layer are generally known.
  • a polyimide film is widely used as a carrier tape serving as a base layer. However, since the polyimide film has a high water absorption rate, there is a problem that cracks are easily generated.
  • Patent Document 1 includes a liquid crystal polyester having a repeating unit derived from p-hydroxybenzoic acid, a repeating unit derived from dihydroxybiphenyl, and a repeating unit derived from benzenedicarboxylic acid as a tab carrier tape.
  • the use of a film is disclosed.
  • Patent Document 2 discloses that as a carrier tape for a tab, a repeating unit derived from p-hydroxybenzoic acid is 60 mol%, a repeating unit derived from isophthalic acid is 20 mol%, and 4,4′-dihydroxybiphenyl. It is specifically disclosed to use a film composed of a liquid crystal polyester having 20 mol% of repeating units derived therefrom.
  • an object of the present invention is to provide a carrier tape for tabs which is made of liquid crystal polyester and further has excellent water vapor barrier properties.
  • the present invention comprises a repeating unit represented by the following formula (1), a repeating unit represented by the following formula (2), and a repeating unit represented by the following formula (3).
  • a carrier tape for tabs composed of a liquid crystalline polyester having a content of repeating units containing 2,6-naphthylene groups and not less than 40 mol% based on the total amount of all repeating units.
  • Ar 1 represents a 2,6-naphthylene group, a 1,4-phenylene group or a 4,4′-biphenylylene group.
  • Ar 2 and Ar 3 are each independently a 2,6-naphthylene group, 1,4 Represents a -phenylene group, a 1,3-phenylene group or a 4,4′-biphenylylene group, wherein the hydrogen atoms in the group represented by Ar 1 , Ar 2 or Ar 3 are each independently a halogen atom or an alkyl group; Alternatively, it may be substituted with an aryl group.
  • the present invention also relates to a carrier tape for tabs composed of a liquid crystal polyester and comprising a liquid crystal polyester having a water vapor transmission rate of 0.005 g / m 2 ⁇ 24 h or less measured at a temperature of 40 ° C. and a relative humidity of 90%. I will provide a.
  • the present invention relates to a tab composed of a liquid crystal polyester having a water vapor transmission rate of 0.005 g / m 2 ⁇ 24 h or less measured at a temperature of 40 ° C. and a relative humidity of 90% when a film having a thickness of 50 ⁇ m is formed.
  • a carrier tape is provided.
  • the present invention provides a tab tape in which a conductor layer is provided on at least one surface of any one of the above-mentioned tab carrier tapes.
  • the carrier tape for tabs of the present invention has excellent water vapor barrier properties, and by using this, a highly reliable tab tape can be obtained.
  • the liquid crystalline polyester constituting the tab carrier tape of the present invention is a polyester that exhibits optical anisotropy when melted, and is preferably a repeating unit represented by the following formula (1) (hereinafter referred to as repeating unit (1)).
  • repeating unit (1) A repeating unit represented by the following formula (2) (hereinafter sometimes referred to as repeating unit (2)) and a repeating unit represented by the following formula (3) (hereinafter referred to as repeating unit (3)). )).
  • Ar 1 represents a 2,6-naphthylene group, a 1,4-phenylene group or a 4,4′-biphenylylene group.
  • Ar 2 and Ar 3 are each independently a 2,6-naphthylene group, 1,4 -Represents a phenylene group, a 1,3-phenylene group or a 4,4′-biphenylylene group, wherein the hydrogen atom in the group represented by Ar 1 , Ar 2 or Ar 3 is independently a halogen atom or a carbon number (It may be substituted with an alkyl group of 1 to 10 or an aryl group of 6 to 20 carbon atoms.)
  • halogen atom a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom are mentioned.
  • alkyl group examples include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, s-butyl group, t-butyl group, n-hexyl group, 2-ethylhexyl group, Examples thereof include an n-octyl group and an n-decyl group, and the carbon number thereof is usually 1 to 10.
  • aryl group examples include a phenyl group, an o-tolyl group, an m-tolyl group, a p-tolyl group, a 1-naphthyl group, and a 2-naphthyl group, and the number of carbon atoms is usually 6-20.
  • the hydrogen atom is substituted with these groups, the number is usually 2 or less for each group represented by Ar 1 , Ar 2 or Ar 3 , and preferably 1 It is as follows.
  • the repeating unit (1) is a repeating unit derived from a predetermined aromatic hydroxycarboxylic acid.
  • the repeating unit (1) those in which Ar 1 is a 2,6-naphthylene group, that is, a repeating unit derived from 6-hydroxy-2-naphthoic acid is preferable.
  • the repeating unit (2) is a repeating unit derived from a predetermined aromatic dicarboxylic acid.
  • Ar 2 is a 2,6-naphthylene group, that is, a repeating unit derived from 2,6-naphthalenedicarboxylic acid, and Ar 2 is a 1,4-phenylene group, Repeating units derived from terephthalic acid are preferred.
  • the repeating unit (3) is a repeating unit derived from a predetermined aromatic diol.
  • Ar 3 is a 1,4-phenylene group, that is, a repeating unit derived from hydroquinone, and Ar 3 is a 4,4′-biphenylylene group, that is, 4,4′-. Repeating units derived from dihydroxybiphenyl are preferred.
  • repeating unit containing 2,6-naphthylene group in liquid crystal polyester that is, repeating unit (1) in which Ar 1 is 2,6-naphthylene group, repeating unit in which Ar 2 is 2,6-naphthylene group (2) and the total content of the repeating unit (3) in which Ar 3 is a 2,6-naphthylene group is the total amount of all repeating units (the mass of each repeating unit constituting the liquid crystal polyester is expressed by the formula of each repeating unit) By dividing by the amount, the substance amount equivalent amount (mole) of each repeating unit is obtained, and the sum thereof is 40 mol% or more.
  • a liquid crystal polyester film having excellent water vapor barrier properties By forming a liquid crystal polyester having such a predetermined repeating unit composition into a film, a liquid crystal polyester film having excellent water vapor barrier properties can be obtained.
  • the content of 2,6-naphthylene groups is preferably 50 mol% or more, more preferably 60 mol% or more, and further preferably 70 mol% or more.
  • the content of the repeating unit (1) is preferably 30 to 80 mol%, more preferably 40 to 70 mol%, still more preferably 45 to 65 mol, based on the total amount of all repeating units.
  • the content of the repeating unit (2) is preferably 10 to 35 mol%, more preferably 15 to 30 mol%, still more preferably 17.5 to 27.27%, based on the total amount of all repeating units.
  • the content of the repeating unit (3) is preferably from 10 to 35 mol%, more preferably from 15 to 30 mol%, still more preferably from 17.5 to mol based on the total amount of all repeating units. 27.5 mol%.
  • the liquid crystal polyester having such a predetermined repeating unit composition has an excellent balance between heat resistance and moldability.
  • the liquid crystalline polyester may have a repeating unit other than the repeating units (1) to (3) as necessary, but the content thereof is usually 10 moles relative to the total amount of all the repeating units. % Or less, preferably 5 mol% or less.
  • a typical example of a liquid crystalline polyester having high heat resistance and high melt tension is a repeating unit (1) in which Ar 1 is a 2,6-naphthylene group, that is, 6-hydroxy-2- with respect to the total amount of all repeating units.
  • the repeating unit derived from naphthoic acid is preferably 40 to 74.8 mol%, more preferably 40 to 64.5 mol%, still more preferably 50 to 58 mol%, and Ar 2 is a 2,6-naphthylene group.
  • the repeating unit (2) that is, the repeating unit derived from 2,6-naphthalenedicarboxylic acid is preferably 12.5 to 30 mol%, more preferably 17.5 to 30 mol%, and still more preferably 20 to 25 mol%.
  • repeating units Ar 2 is 1,4-phenylene group (2), i.e., repeating units derived from terephthalic acid, preferably 0.2 to 15 mol%, more preferably 0. To 12 mol%, more preferably having 2 to 10 mol%, the repeating units Ar 3 is 1,4-phenylene group (3), i.e., a repeating unit derived from hydroquinone, preferably 12.5 to 30 mol %, more preferably 17.5 to 30 mol%, more preferably having 20-25 mol%, and the content of the repeating unit (2) Ar 2 is 2,6-naphthylene group, Ar 2 is The total content of the repeating unit (2) which is a 2,6-naphthylene group and the repeating unit (2) wherein Ar 2 is a 1,4-phenylene group is preferably 0.5 mol times or more, more preferably It is 0.6 mol times or more.
  • the liquid crystalline polyester is a monomer that gives a repeating unit (1), that is, a predetermined aromatic hydroxycarboxylic acid, a monomer that gives a repeating unit (2), that is, a monomer that gives a predetermined aromatic dicarboxylic acid, and a repeating unit (3), That is, a predetermined aromatic diol is added to a total amount of monomers having 2,6-naphthylene groups, that is, a total amount of 6-hydroxy-2-naphthoic acid, 2,6-naphthalenedicarboxylic acid and 2,6-naphthalenediol.
  • the polymer can be produced by polymerization (polycondensation) so as to be 40 mol% or more based on the total amount of all monomers.
  • the aromatic hydroxycarboxylic acid, the aromatic dicarboxylic acid, and the aromatic diol may be independently replaced by a part or all of the polymerizable derivatives thereof.
  • polymerizable derivatives of a compound having a carboxyl group such as an aromatic hydroxycarboxylic acid and an aromatic dicarboxylic acid include those obtained by converting a carboxyl group into an alkoxycarbonyl group or an aryloxycarbonyl group, and a carboxyl group as a haloformyl.
  • a group formed by converting a carboxyl group into an acyloxycarbonyl group a group formed by converting a carboxyl group into an acyloxycarbonyl group.
  • polymerizable derivatives of hydroxyl group-containing compounds such as aromatic hydroxycarboxylic acids and aromatic diols include those obtained by acylating a hydroxyl group and converting it to an acyloxyl group.
  • the liquid crystalline polyester is preferably produced by melt polymerizing monomers and solid-phase polymerizing the obtained polymer (prepolymer). Thereby, liquid crystalline polyester with high heat resistance and high melt tension can be manufactured with good operability.
  • Melt polymerization may be carried out in the presence of a catalyst.
  • this catalyst include metal compounds such as magnesium acetate, stannous acetate, tetrabutyl titanate, lead acetate, sodium acetate, potassium acetate, and antimony trioxide, Nitrogen-containing heterocyclic compounds such as N, N-dimethylaminopyridine and N-methylimidazole, and nitrogen-containing heterocyclic compounds are preferably used.
  • the liquid crystal polyester having the predetermined repeating unit composition thus obtained is excellent in water vapor barrier properties and used as a material for the tab carrier tape of the present invention.
  • the liquid crystal polyester has a flow start temperature of preferably 280 ° C. or higher, more preferably 290 ° C. or higher, further preferably 295 ° C. or higher, and is usually 380 ° C. or lower, preferably 350 ° C. or lower.
  • a flow start temperature preferably 280 ° C. or higher, more preferably 290 ° C. or higher, further preferably 295 ° C. or higher, and is usually 380 ° C. or lower, preferably 350 ° C. or lower.
  • the flow start temperature is higher, the heat resistance and melt tension are more likely to be improved. However, if the flow start temperature is too high, a high temperature is required for melting, and thermal deterioration tends to occur during molding.
  • the flow start temperature is also called flow temperature or flow temperature, and is 4 ° C./min under a load of 9.8 MPa (100 kg / cm 2 ) using a capillary rheometer having a nozzle with an inner diameter of 1 mm and a length of 10 mm.
  • This is a temperature at which the melt viscosity shows 4800 Pa ⁇ s (48,000 poise) when the heated melt of the liquid crystal polyester is extruded from the nozzle at a rate of temperature rise, and is a measure of the molecular weight of the liquid crystal polyester (Naoyuki Koide) Ed., “Liquid Crystal Polymers—Synthesis / Molding / Application—”, CMC Corporation, June 5, 1987, p. 95).
  • the liquid crystal polyester of the present invention preferably has a water vapor permeability measured at a temperature of 40 ° C. and a relative humidity of 90% when formed into a film having a thickness of 50 ⁇ m, preferably 0.05 g / m 2 ⁇ 24 h or less, More preferably, it is 0.01 g / m ⁇ 2 > * 24h or less, More preferably, it is 0.005 g / m ⁇ 2 > * 24h or less.
  • the liquid crystal polyester may be blended with other components as necessary to form a composition.
  • other components include fillers, thermoplastic resins other than liquid crystal polyesters, and additives.
  • the ratio of the liquid crystal polyester in the entire composition is preferably 80% by mass or more, and more preferably 90% by mass or more.
  • fillers include glass fibers such as milled glass fibers and chopped glass fibers, potassium titanate whiskers, alumina whiskers, aluminum borate whiskers, silicon carbide whiskers, silicon nitride whiskers, and other metal or non-metallic whiskers.
  • glass fiber, mica, talc and carbon fiber are preferably used.
  • the filler may be surface-treated as necessary, and examples of the surface treatment agent include reactivity such as a silane coupling agent, a titanate coupling agent, and a borane coupling agent.
  • examples of the surface treatment agent include reactivity such as a silane coupling agent, a titanate coupling agent, and a borane coupling agent.
  • Examples include coupling agents and lubricants such as higher fatty acids, higher fatty acid esters, higher fatty acid metal salts, and fluorocarbon surfactants.
  • thermoplastic resins other than liquid crystal polyester include polycarbonate, polyamide, polysulfone, polyphenylene sulfide, polyphenylene ether, polyether ketone, and polyetherimide resin.
  • additives include mold release improvers such as fluororesins and metal soaps, nucleating agents, antioxidants, stabilizers, plasticizers, lubricants, anti-coloring agents, coloring agents, ultraviolet absorbers, antistatic agents, Examples include lubricants and flame retardants.
  • a liquid crystal polyester film to be a carrier tape for a tab of the present invention can be obtained.
  • the film forming method include an extrusion molding method, a press molding method, a solution casting method, and an injection molding method, and the extrusion molding method is preferable.
  • the extrusion molding method include a T-die method and an inflation method. In the T-die method, uniaxial stretching or biaxial stretching may be performed.
  • the draw ratio (draft ratio) of the uniaxially stretched film is usually 1.1 to 40, preferably 10 to 40, more preferably 15 to 35.
  • the stretch ratio in the MD direction (extrusion direction) of the biaxial film is usually 1.2 to 40 times, and the stretch ratio in the TD direction (direction perpendicular to the extrusion direction) of the biaxial film is usually 1.2 to 20 times. Is double.
  • the thickness of the liquid crystal polyester film is preferably 5 to 100 ⁇ m, more preferably 10 to 75 ⁇ m, and further preferably 15 to 75 ⁇ m. If it is too thin, the strength will be insufficient, and if it is too thick, the flexibility will be insufficient.
  • the liquid crystal polyester film thus obtained has an excellent water vapor barrier property and is used as the carrier tape for tabs of the present invention.
  • the liquid crystal polyester film water vapor transmission rate being measured at a temperature 40 ° C. and a relative humidity of 90%, preferably from 0.05g / m 2 ⁇ 24h or less, more preferably 0.01g / m 2 ⁇ 24h or less, further Preferably, it is 0.005 g / m 2 ⁇ 24 h or less.
  • a laminated film obtained by laminating a plurality of liquid crystal polyester films or laminating another resin film or resin layer on the liquid crystal polyester film is also used as the tab carrier tape of the present invention.
  • the resin constituting the other resin film or resin layer include thermoplastic resins such as polyamide, polyester, polyphenylene sulfide, polyether ketone, polycarbonate, polyether sulfone, polyphenyl ether and modified products thereof, polyether imide, and the like. , Thermosetting resins such as phenol resin, epoxy resin, polyimide resin, and cyanate resin.
  • a laminated film obtained by providing a water vapor barrier layer or other functional layer on the liquid crystal polyester film or the laminated film to further improve the water vapor barrier property is also used as the tab carrier tape of the present invention. It is done.
  • the water vapor barrier layer is provided on at least one surface of the liquid crystal polyester film.
  • the water vapor barrier layer is provided on the single side
  • Substances constituting the water vapor barrier layer include at least one element selected from the group consisting of aluminum, silicon, titanium, chromium, iron, cobalt, nickel, copper, zinc, silver and gold, an oxide, and a nitride And oxynitrides are preferable, and two or more of them may be used as necessary.
  • a method for forming the water vapor barrier layer for example, a vapor deposition method, a sputtering method, a PVD method such as an ion plating method, a CVD method such as a plasma CVD method, a thermal CVD method, a laser CVD method, a sol-gel method, a plating method, etc. And wet methods such as a coating method. Further, a foil prepared or obtained separately may be bonded to the liquid crystal polyester film.
  • the tab carrier tape thus obtained may be subjected to a surface treatment as necessary.
  • the surface treatment method include corona discharge treatment, flame treatment, sputtering treatment, solvent treatment, UV treatment, and plasma treatment.
  • the tab tape can be obtained by forming a conductor layer on at least one surface of the tab carrier tape.
  • the conductor layer may be formed by punching the tab carrier tape as necessary to form a pattern, and then applying a metal foil to the tab carrier tape by thermocompression bonding or an adhesive.
  • the metal layer may be formed by sputtering, electroless plating or electrolytic plating.
  • thermocompression bonding is preferably performed using a press or a heating roll near the flow start temperature of the tab carrier tape.
  • the adhesive include a hot melt adhesive and a polyurethane adhesive, and among them, an epoxy group-containing ethylene copolymer is preferably used.
  • the metal foil examples include gold foil, silver foil, copper foil, nickel foil, and aluminum foil, and copper foil is preferably used.
  • the thickness of the metal foil is usually 1 to 1000 ⁇ m, preferably 1 to 100 ⁇ m.
  • electroless plating examples include electroless copper plating, electroless nickel plating, electroless gold plating, electroless silver plating, and electroless tin plating.
  • electroless plating after performing electroless plating, a different kind of electroless plating or electrolytic plating may be performed, or solder may be coated.
  • Examples of sputtering methods include ion beam sputtering, high frequency sputtering, direct current magnetron sputtering, and glow discharge.
  • Examples of the inert gas that ionizes and collides with the target metal or metal compound as a cation during sputtering include argon, xenon, neon, and nitrogen, with argon being preferred. These inert gases may be used as a mixture.
  • Examples of the target metal or metal compound include gold, silver, copper, aluminum, alumina, nickel-chromium alloy, and cobalt-nickel alloy, and copper is preferable.
  • the thickness of the metal layer formed by sputtering is usually 100 nm to 1 ⁇ m. On the metal layer formed by sputtering, copper plating or the like may be applied as necessary.
  • the tab tape thus obtained is highly reliable because it uses a carrier tape for tabs having excellent water vapor barrier properties.
  • Production Example 2 In the same reactor as in Production Example 1, 911 g (6.6 mol) of p-hydroxybenzoic acid, 274 g (1.65 mol) of terephthalic acid, 91 g (0.55 mol) of isophthalic acid, 4,4′-dihydroxybiphenyl 409 g (2.2 mol), 1235 g of acetic anhydride (12.1 mol), and 0.17 g of 1-methylimidazole as a catalyst were added, and the gas in the reactor was replaced with nitrogen gas, followed by stirring under a nitrogen gas stream While raising the temperature from room temperature to 150 ° C. over 15 minutes, the mixture was refluxed at 150 ° C. for 1 hour.
  • the mixture was cooled to obtain a powdery liquid crystal polyester.
  • this liquid crystal polyester 60 mol% of the repeating unit (1) in which Ar 1 is a 1,4-phenylene group, 15 mol% of the repeating unit (2) in which Ar 2 is a 1,4-phenylene group, and Ar 2 is 5% by mole of the repeating unit (2) which is a 1,3-phenylene group and 20% of the repeating unit (3) whose Ar 3 is a 4,4′-biphenylylene group, and its flow initiation temperature is 327 ° C. there were.
  • Example 1 The liquid crystalline polyester obtained in Production Example 1 was granulated with a twin-screw extruder ("PCM-30" by Ikekai Co., Ltd.), pelletized, and then supplied to a single-screw extruder (screw diameter 50 mm). It was melted, extruded from a T die (lip length: 300 mm, lip clearance: 1 mm, die temperature: 350 ° C.) and cooled to obtain a liquid crystal polyester film having a thickness of 25 ⁇ m.
  • the liquid crystal polyester film has a water vapor permeability of 0.011 g / m 2 ⁇ 24 h, and is excellent in water vapor barrier properties as a carrier tape for tabs.
  • Example 2 The liquid crystalline polyester obtained in Production Example 1 was granulated with a twin-screw extruder ("PCM-30" by Ikekai Co., Ltd.), pelletized, and then supplied to a single-screw extruder (screw diameter 50 mm). It was melted, extruded from a T-die (lip length 300 mm, lip clearance 1 mm, die temperature 350 ° C.) into a film and cooled to obtain a liquid crystal polyester having a thickness of 50 ⁇ m.
  • the liquid crystal polyester film has a water vapor permeability of 0.0030 g / m 2 ⁇ 24 h, and is excellent in water vapor barrier properties as a carrier tape for tabs.
  • Comparative Example 1 The liquid crystalline polyester obtained in Production Example 2 was granulated with a twin-screw extruder ("PCM-30" from Ikekai Co., Ltd.), pelletized, and then supplied to a single-screw extruder (screw diameter 50 mm). It was melted and extruded from a T die (lip length 300 mm, lip clearance 1 mm, die temperature 350 ° C.) into a film and cooled to obtain a liquid crystal polyester film having a thickness of 50 ⁇ m.
  • the water vapor permeability of this liquid crystal polyester film is 0.343 g / m 2 ⁇ 24 h, and the water vapor barrier property is insufficient as a carrier tape for tabs.
  • Comparative Example 2 The powdered liquid crystalline polyester obtained in Production Example 2 was granulated with a twin screw extruder ("PCM-30" manufactured by Ikegai Co., Ltd.) and pelletized, and then a single screw extruder (screw diameter 50 mm). And melted, extruded from a T-die (lip length 300 mm, lip clearance 1 mm, die temperature 350 ° C.) and cooled to obtain a liquid crystal polyester film having a thickness of 50 ⁇ m.
  • the liquid crystal polyester film has a water vapor permeability of 0.080 g / m 2 ⁇ 24 h, and has insufficient water vapor barrier properties as a carrier tape for tabs.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Wire Bonding (AREA)

Abstract

La présente invention concerne le problème consistant à fournir une bande de support TAB qui est très efficace comme barrière à la vapeur d'eau. La présente invention concerne une bande de support TAB comprenant un polyester à cristaux liquides qui présente un motif répétitif représenté par la formule (1), un motif répétitif représenté par la formule (2), et un motif répétitif représenté par la formule (3), des motifs répétitifs contenant des groupes 2,6-naphthylène constituant au moins 40% molaire de tous les motifs répétitifs du polyester à cristaux liquides (1) -O-Ar1-CO- (2) -CO-Ar2-CO- (3) -O-Ar3-O-, Ar1 représentant un groupe 2,6-naphthylène, un groupe 1,4-phénylène ou un groupe 4,4'-biphénylène. Ar2 et Ar3 représentent respectivement et indépendamment un groupe 2,6-naphthylène, un groupe 1,4-phénylène, un groupe 1,3-phénylène ou un groupe 4,4'-biphénylène.
PCT/JP2012/053386 2011-02-16 2012-02-14 Bande de support tab et bande tab Ceased WO2012111661A1 (fr)

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JP2011-030911 2011-02-16
JP2011030911A JP2012169535A (ja) 2011-02-16 2011-02-16 タブ用キャリアテープ及びタブテープ

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WO2012111661A1 true WO2012111661A1 (fr) 2012-08-23

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JP7210401B2 (ja) * 2019-02-15 2023-01-23 住友化学株式会社 フィルム及び積層体
WO2020166644A1 (fr) * 2019-02-15 2020-08-20 住友化学株式会社 Film et stratifié

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JPH0521533A (ja) * 1991-06-26 1993-01-29 Matsushita Electric Works Ltd Ｔａｂ用キヤリヤテープ
JP2002329757A (ja) * 2001-04-27 2002-11-15 Sumitomo Chem Co Ltd タブ用キャリヤテープ及びそれを用いたタブテープ
JP2004203032A (ja) * 2002-12-12 2004-07-22 Sumitomo Chem Co Ltd 芳香族液晶ポリエステルフィルムの製造方法
JP2004250688A (ja) * 2003-01-29 2004-09-09 Sumitomo Chem Co Ltd 芳香族液晶ポリエステルフィルム
JP2006096955A (ja) * 2004-09-30 2006-04-13 Sumitomo Chemical Co Ltd 芳香族液晶ポリエステルフィルム
JP2006135278A (ja) * 2004-10-08 2006-05-25 Toppan Printing Co Ltd プリント配線板用絶縁樹脂フィルム及びそれを用いたプリント配線板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0521533A (ja) * 1991-06-26 1993-01-29 Matsushita Electric Works Ltd Ｔａｂ用キヤリヤテープ
JP2002329757A (ja) * 2001-04-27 2002-11-15 Sumitomo Chem Co Ltd タブ用キャリヤテープ及びそれを用いたタブテープ
JP2004203032A (ja) * 2002-12-12 2004-07-22 Sumitomo Chem Co Ltd 芳香族液晶ポリエステルフィルムの製造方法
JP2004250688A (ja) * 2003-01-29 2004-09-09 Sumitomo Chem Co Ltd 芳香族液晶ポリエステルフィルム
JP2006096955A (ja) * 2004-09-30 2006-04-13 Sumitomo Chemical Co Ltd 芳香族液晶ポリエステルフィルム
JP2006135278A (ja) * 2004-10-08 2006-05-25 Toppan Printing Co Ltd プリント配線板用絶縁樹脂フィルム及びそれを用いたプリント配線板

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