WO1997047467A1 - Polymeres cycliques d'olefine servant d'ecrans d'humidite utilisables dans le cas des polariseurs - Google Patents

Polymeres cycliques d'olefine servant d'ecrans d'humidite utilisables dans le cas des polariseurs Download PDF

Info

Publication number
WO1997047467A1
WO1997047467A1 PCT/US1997/008954 US9708954W WO9747467A1 WO 1997047467 A1 WO1997047467 A1 WO 1997047467A1 US 9708954 W US9708954 W US 9708954W WO 9747467 A1 WO9747467 A1 WO 9747467A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminate
cyclic olefin
adhesive
layer
layers
Prior art date
Application number
PCT/US1997/008954
Other languages
English (en)
Inventor
Mohammad Mortazavi
Vincent J. Sullivan
Sunny S. Shen
Hyun Nam Yoon
Douglas R. Holcomb
Wilfried Hatke
Original Assignee
Hoechst Celanese Corporation
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 Hoechst Celanese Corporation filed Critical Hoechst Celanese Corporation
Priority to AU32870/97A priority Critical patent/AU3287097A/en
Publication of WO1997047467A1 publication Critical patent/WO1997047467A1/fr

Links

Classifications

    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3016—Polarising elements involving passive liquid crystal elements
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays

Definitions

  • This invention relates to cyclic olefin polymeric moisture barriers for polarizer laminates.
  • Such cyclic olefin polymeric films provide excellent moisture barrier and mechanical support to the polarizing layer in the laminates, which are useful in applications such as, for example, liquid crystal display devices
  • Polarizers are important components of liquid crystal displays. LCDs are widely used components in applications such as, for example, Notebook Personal Computers ("PCs”), calculators, watches, liquid crystal color TVs, word processors, automotive instrument panels, anti-glare glasses and the like.
  • PCs notebook Personal Computers
  • a useful review article, for example, is "Digital Displays” by in Kirk-Othmer Encyclopedia of Chemical Technology, Third edition, Volume 7, page 726 (1979), Wiley-lnterscience Publication, John Wiley & Sons, New York.
  • polarizers are used in the form of film.
  • Traditional polarizing films comprise a stretched polymer film such as, for example, polyvinyl alcohol (“PVA”), a dichroic absorber and other optional layers.
  • the dichroic absorber is usually iodine or a dichroic dye that is absorbed in the polymer film.
  • the polarizer film is generally laminated. Lamination also prevents relaxation of dichroism, and provides a barrier to moisture. This moisture barrier function is particularly important in polarizers wherein the polarizing layer is comprised of PVA. Additionally, the type of materials used for the lamination as well as the process of preparing the laminate are generally critical in the performance of the LCD.
  • both sides of the polarizer film are laminated, thus giving rise to five individual layers: the polarizer film in the middle, flanked on either side by an adhesive layer which binds the polarizer film to a protective layer, such as, for example, polyethylene terephthalate (“PET”), polymethyl methacrylate (“PMMA”), triacetyl cellulose (“CTA”), and the like.
  • a protective layer such as, for example, polyethylene terephthalate (“PET”), polymethyl methacrylate (“PMMA”), triacetyl cellulose (“CTA”), and the like.
  • PET polyethylene terephthalate
  • PMMA polymethyl methacrylate
  • CTA triacetyl cellulose
  • the protective layer may also be bonded, via an adhesive, to a substrate.
  • Most commercial polarizer laminates currently use solvent cast cellulose triacetate film to provide moisture barrier to the polarizing film.
  • the cyclic olefin polymer useful for the protective layer, may be a cyclic olefin homopolymer or a cyclic olefin copolymer ("COC").
  • COC cyclic olefin copolymer
  • suitable cyclic olefin monomer for the homopolymer or copolymer include, but are not limited to, norbornene, tetracyclododecene, and the like.
  • the comonomer is preferably an acyclic olefin.
  • suitable acyclic olefins include, but are not limited to, ethylene, propylene, 1-butene and the like, and combinations thereof.
  • Such cyclic olefin polymer films exhibit low birefringence, even when melt processed, and also provide excellent moisture barrier properties, making them ideal candidates for the barrier/protective layers of polarizer laminates.
  • COC material suitable to be processed into protective layers in accordance with this invention are disclosed, for example, in US 5,087,677, US 5,324,801 , US 5,331 ,057, US 5,128,446, US 5,225,503, US 5,272,235, US 5,243,005, US 3,557,072, and US 4,178,424.
  • Such materials may be formed into films suitable for protective layer applications using suitable film-forming processes familiar to those skilled in the art.
  • inventive laminates may contain additional layers such as, for example, one or more adhesive layers, other protective and/or support layers, and the like.
  • the present invention further provides a process to make the inventive laminates.
  • the present invention discloses moisture barrier protective layer films comprising cyclic olefin polymer for polarizer laminates.
  • the films generally have a thickness in the range 10 to 1000 ⁇ m, preferably in the range 10-500 ⁇ m, and typically in the range 10-200 ⁇ m.
  • the cyclic olefin polymers useful in preparing the protective layers may be homopolymers or copolymers ("COC") of cyclic olefin monomers.
  • Suitable cyclic olefin monomers are norbornene, tetracyclododecene, bicyclo[2,2,1]hept-2-ene, 1- methylbicyclo[2,2,1]hept-2-ene,hexacyclo[6,6,1 ,1 36 ,1 10 ' 13 ,0 27 ,0 9 14 ]-4-hepta- decene, and the like, and combinations thereof. Many such monomers are well known and are described, for example, in U.S. Patent 5,008,356.
  • the comonomer or comonomers are chosen from a variety of suitable olefins, including, for example, acyclic olefins. Many such comonomers are also well known in the literature, including, for example, the above-noted U.S. Patent 5,008,356. Preferred copolymeric compositions as well as a convenient process to prepare them are disclosed in the afore-mentioned U.S. 5,087,677. Such copolymers possess good thermal and optical characteristics, with Tg values typically at least 80°C.
  • the molar percentage of the cyclic olefin monomer in the COC is generally in the range of 0.1 to 100 %, preferably in the range of 25 to 85 %, and typically in the range of 35 to 75 %.
  • Preferred COCs are the copolymers of norbornene and ethylene in a 50:50 ratio.
  • the Tg of one such 50:50 copolymer, described in the afore-mentioned U.S. 5,087,677 is 135°C.
  • Many grades of the 50:50 norbornene: ethylene copolymer are available from Hoechst Celanese Corporation, Somerville, New Jersey, under the trade name TOPASTM.
  • the cyclic olefin polymers may be formed into films useful for protective layer applications by a variety of processes well known. These processes include, but are not limited to, calendaring, extrusion and solution casting, and the like. Such processes may be used to produce COC films exhibiting low birefringence, for example, a birefringence of ⁇ 10 "4 at 633 nm wavelength, and elongations at break of 2-6%. Mechanical properties may also be significantly improved by biaxially orienting the film as described in US Patent Applications, Serial No. 08/195,077 filed February 14, 1994; 08/195,078 filed February 14, 1994; and 08/195,084 filed February 14, 1994. Birefringence may be minimized during the biaxial orientation by adjustment of process variables such as drawing speed and total stretch ratio in machine and transverse directions. The properties of typical biaxially oriented COC films are shown in Table 1.
  • COC Polymer COC-S-1400 from Hoechst Celanese Corporation
  • Table 4 in the EXAMPLES section compares the water permeability of a biaxially oriented COC film useful as protective layer for polarizer laminates with that of a standard cellulose triacetate protective layer. As Table 4 demonstrates, the water permeability of the COC film is substantially less than that of the CTA film.
  • laminates comprising the above-noted COC-based protective layers and polarizing films. Such laminates possess good mechanical stability, thermal stability and optical clarity.
  • the laminates comprise, in addition o the COC-containing protective layer described above, other layers such as the polarizing layer, adhesive layers, supporting layers, and the like. Some of these categories are described below.
  • Materials suitable for the polarizing layer are known in the art.
  • the polarizing layer may comprise either iodine or a polymer such as, for example, PVA, a polyester, liquid crystalline polymer (“LCP”) and the like, along with one or more dichroic absorbers.
  • LCPs are well known in the art, and any suitable LCP may be used in the practice of the invention, provided the resulting polarizing film has suitable mechanical, thermal and physical properties.
  • the LCP may be a polyester, polyamide, polycarbonate, polyester- carbonate), polyaramide, poly(ester-amide), and the like.
  • Preferred LCPs are liquid crystalline polyesters. Several suitable liquid crystalline polyesters are
  • LCPs are those disclosed in the pending patent application, Serial No. 08/460.288, filed June 2, 1995.
  • An example from that patent application is the liquid crystalline polyester called COTBPR therein and comprising repeat units from the monomers 4-hydroxybenzoic acid, terephthalic acid, 4,4'-biphenol, 6- hydroxy-2-naphthoic acid, and resorcinol in the ratio 30:20:10:30:10 respectively.
  • the dichroic absorber may be inorganic such as, for example, iodine, or a suitable organic dye described in the same pending patent application.
  • the adhesive layer may be made from a thermally curing type adhesive, radiation curing type, pressure sensitive type, x-ray curing type, electron-beam curing type adhesive, and the like.
  • Several such useful adhesives for constructing the laminate are available commercially, such as, for example, acrylic adhesives, acrylic urethane-based adhesives, and the like.
  • ® are, for example, Z-FLEX (obtained from Courtaulds Performance Films,
  • DEV8154 also called ARclad ; obtained from Adhesives
  • UV10LVDC obtained
  • the laminate may contain other optional layers familiar to those skilled in the art. These may include other protective layers, barrier layers, supporting films, substrate materials, and the like. Examples are glasses, ceramics, as well as plastics such as, for example, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and triacetyl cellulose (CTA).
  • PET polyethylene terephthalate
  • PMMA polymethyl methacrylate
  • CTA triacetyl cellulose
  • polycarbonates such as, for example, polycarbonates, polybenzimidazles, polybenzimidazolones, polybenzoxazoles, polybenzthiazoles, nylons, polyvinyl chlorides, wholly aromatic polyesters, polyarylates, polyamides, polyaramides, poiyimides, poly(amide-imides), poly(ester-carbonates), poly(ester-amides), and the like may also be used.
  • Another embodiment of the invention is the process of preparing the laminates.
  • the process generally includes stages such as, for example, curing, and testing for properties such as mechanical stability, environmental stability, and optical clarity.
  • the surface of the polarizing film may be suitably treated such as, for example, corona plasma, if necessary, to improve its adhesion.
  • Lamination samples comprising the polarizing film, adhesive layer and the protective layer may be assembled, in the order desired.
  • the adhesive layer may be applied on one or both sides of the polarizing film, preferably on both, which may then be brought in contact with the protective layer. Or it may be first applied to the protective layer which may then be laminated to the polarizing film.
  • the same adhesive or different adhesives may be used on the two sides although use of the same adhesive is preferred.
  • the adhesive may be applied by suitable processes which are well known to those skilled in the art, such as, for example, direct application, coating from a solution, extrusion, and the like.
  • the curing conditions depend on the type of the adhesive - whether it is thermal curing, radiation curing, e-beam curing, and the like.
  • the curing conditions such as, for example, temperature, pressure and the like, may be applied to the sample by use of suitable equipment such as, for example, hydraulic press, oven, light (UV, for example) and the like. Vacuum may be used during the curing process to reduce or eliminate any problems with air bubbles.
  • suitable equipment such as, for example, hydraulic press, oven, light (UV, for example) and the like. Vacuum may be used during the curing process to reduce or eliminate any problems with air bubbles.
  • a certain amount of time is generally allowed for the adhesive to completely bond the layers. The completion of the lamination may be tested by observing the physical appearance before and after cure.
  • the testing for mechanical stability involves the testing of the bond strength (peel strength) between the adhesive and the polarizer film after the laminate is cured. Higher peel strength indicates stronger bond between the respective layers, and better mechanical stability. Testing methods for the peel strength are well known in the art, such as, for example, the ASTM D1876 procedure published by the American Society for Testing Materials, Philadelphia, Pennsylvania. The environmental efficiency of the protective layer is tested by measuring the peel strengths before environmental testing of the laminate and thereafter at various time intervals during the environmental testing under conditions that are generally used for testing polarizer films.
  • Such testing conditions generally involve exposure of the laminate to an elevated temperature and humidity for a specific number of days in order to observe any physical changes in the appearance of the lamination.
  • the laminate may contain other optional layers too.
  • the above-described protective layer/adhesive/polarizing film/adhesive/protective layer laminate may be further bonded to a substrate such as glass, plastic, ceramic and the like, by applying an adhesive to the protective layer and then bringing the substrate in contact with that layer.
  • the adhesive may be the pressure-sensitive type, for example.
  • the substrate may be bonded to one protective layer only or both. If it is applied to one protective layer only, the laminate will now be, for example, glass/adhesive/protective layer/adhesive/LCP polarizing film/adhesive/protective layer.
  • ITO indium-tin- oxide
  • the ITO layer may be directly coated by suitable processes such as vacuum deposition and the like.
  • High Tg COC films are particularly well suited for laminates comprising ITO layers due to the high temperatures required for deposition of such layers.
  • metal reflectors, transflectors, and the like as part of the laminate, with or without an adhesive.
  • An example laminate would be metal/polarizing film/adhesive/protective layer/adhesive layer/substrate.
  • the invention may be illustrated by the following description, wherein an LCP based polarizing film (COTBPR) was used.
  • COTBPR LCP based polarizing film
  • the materials were assembled as described in the EXAMPLES section below, and then cured.
  • the adhesive being a pressure-sensitive adhesive achieved full curing through the use of a hydraulic hot press.
  • the lamination samples cured with the adhesive were then subjected to peel strength testing to determine their bond strength.
  • the cured laminates were then placed into an environmental chamber and exposed to a temperature of about 90° C and a relative humidity of about 90 percent. These laminates remained in the chamber for a specified number of days in order to observe any physical changes in their appearance and effects on adhesive performance, and tested at several intervals for their peel strength. The testing intervals were one, four, seven, and fourteen days. Results showed excellent adhesion, and no significant deterioration in the peel strength.
  • HCCCTA refers to a CTA film manufactured by Hoechst Celanese Corporation, thickness 2.0 mil and available from Catalina Plastics, Las Vegas, Nevada.
  • Eastman CTA refers to KODACEL TA 415 TM , Item Number K7945, available from Eastman Chemicals, Kingsport, Tennessee., with thickness 3.3 mil.
  • Example 1 Illustration of preparing the Laminate: The LCP used as
  • (R) polarizer in this Example was Vectran A910 from Hoechst Celanese Corporation.
  • the protective films were biaxially oriented COC films of 30 micron thickness (see Table 1) from Hoechst Celanese Corporation.
  • the adhesive was
  • Peel Strengths were measured according to ASTM D1876 and are in units of lbs/in.
  • Example 2 Preparation and Testing of Laminates containing COC versus CTA as protective layer: Similar to the illustration above, laminates were prepared where the polarizing layer was a dyed COTBPR described in the pending patent application, Serial No. 08/460,288, referred to earlier, and the protective layer was either CTA (Eastman as well as HCCCTA) or COC. The laminates were then subjected to environmental test in order to test the comparative efficiency of the protective layer. The efficiency was determined by measuring the peel strength after regular intervals of time in the environmental chamber. Thus, the peel strength was determined at 0 time in the chamber, and then after intervals of 1 , 4, 7 and 14 days in the chamber. Consistently maintained peel strength without deterioration indicates better adhesion in the laminate and better protection of the laminate by the protective layer from attack by the humidity conditions. The results are summarized in Table 3:
  • Example 3 Water Vapor Permeability Measurements: The water vapor permeability of the biaxially oriented COC film and of the CTA film used in the above example was compared. The results are shown in Table 4. Permeability was determined by multiplying the measured Water Vapor Transmission Rate (WVTR) by film thickness. A MoCon Permatran-W 3/31 MA module (from (Modern Controls, Minneapolis, Minnesota) was used for measurement of WVTR. The calibration standard S/N 0795AK020, which is NIST traceable, was used to insure that the unit performed correctly for all tests. For all tests, the calibration standard tested within specifications. A WVTR test temperature of 37.8° C and relative humidity of 100% were used.
  • WVTR Water Vapor Transmission Rate

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)

Abstract

La présente invention, qui concerne des couches de protection faisant office d'écrans d'humidité pour des polariseurs, concerne également des stratifiés qui intègrent de telles couches et conviennent donc pour des afficheurs. La couche de protection comprend des polymères d'une oléfine cyclique, la couche polarisante comprenant un polyester à l'état de cristal liquide et un absorbeur dichroïque. Le stratifié type de l'invention est constitué d'une couche polarisante et d'une couche de protection, les deux couches adhérant l'une contre l'autre au moyen d'une couche adhésive intermédiaire. Cette couche de protection assure au stratifié une excellente protection contre l'humidité. L'invention concerne également un procédé de préparation de tels stratifiés.
PCT/US1997/008954 1996-06-14 1997-05-23 Polymeres cycliques d'olefine servant d'ecrans d'humidite utilisables dans le cas des polariseurs WO1997047467A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32870/97A AU3287097A (en) 1996-06-14 1997-05-23 Cyclic olefin polymeric moisture barriers for polarizer applications

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66518796A 1996-06-14 1996-06-14
US08/665,187 1996-06-14

Publications (1)

Publication Number Publication Date
WO1997047467A1 true WO1997047467A1 (fr) 1997-12-18

Family

ID=24669082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/008954 WO1997047467A1 (fr) 1996-06-14 1997-05-23 Polymeres cycliques d'olefine servant d'ecrans d'humidite utilisables dans le cas des polariseurs

Country Status (4)

Country Link
AU (1) AU3287097A (fr)
TW (1) TW380096B (fr)
WO (1) WO1997047467A1 (fr)
ZA (1) ZA975270B (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015524A (en) * 1997-10-20 2000-01-18 Hoechst Celanese Corporation Adhesives for making multilayer films comprising liquid crystalline polymers and polyethylene
US6042902A (en) * 1997-10-20 2000-03-28 Hoechst Celanese Corporation Adhesives for making multilayer films comprising liquid crystalline polymers and poly(ethylene terephthalate) or polycarbonate
EP1102108A2 (fr) * 1999-11-18 2001-05-23 Nitto Denko Corporation Film de protection pour la surface d'un affichage à cristal liquide, affichage à cristal liquide protégé par un tel film et méthode de protection de la surface d'un affichage à cristal liquide avec un tel film
EP1143269A2 (fr) * 2000-01-13 2001-10-10 Nitto Denko Corporation Polariseur pour changer le chemin optique
US6636358B2 (en) 2000-02-02 2003-10-21 Nitto Denko Corporation Optical film
US6659615B2 (en) 2000-01-13 2003-12-09 Nitto Denko Corporation Light pipe and method for producing the same
US6729736B2 (en) 2000-10-24 2004-05-04 Nitto Denko Corporation Light pipe, planar light source unit and reflection type liquid-crystal display device
US6747801B2 (en) 2000-01-13 2004-06-08 Nitto Denko Corporation Optical film and liquid-crystal display device
US6751023B2 (en) 2000-02-02 2004-06-15 Nitto Denko Corporation Optical film
US6827457B2 (en) 2001-03-12 2004-12-07 Nitto Denko Corporation Light pipe, planar light source unit and reflective liquid-crystal display device
US6888595B2 (en) 2000-02-14 2005-05-03 Nitto Denko Corporation Reflector and liquid-crystal display device
US6900937B2 (en) 2001-07-19 2005-05-31 Nitto Denko Corporation Optical element, polarizing plate and method for manufacturing thereof, protective film for optical element, optical film using optical element, and visual display
US6985292B2 (en) * 1999-12-28 2006-01-10 Gunze Co., Ltd. Polarizing plate and liquid-crystal display containing the same
US7535017B2 (en) * 2003-05-30 2009-05-19 Osram Opto Semiconductors Gmbh Flexible multilayer packaging material and electronic devices with the packaging material
JP2019089344A (ja) * 2011-08-03 2019-06-13 リンテック株式会社 ガスバリア性粘着シート、その製造方法、並びに電子部材及び光学部材

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397263A1 (fr) * 1989-05-10 1990-11-14 Koninklijke Philips Electronics N.V. Procédé pour la fabrication d'un filtre de polarisation, filtre de polarisation ainsi obtenu et dispositif d'affichage muni du filtre de polarisation
EP0587890A1 (fr) * 1991-06-07 1994-03-23 Nippon Zeon Co., Ltd. Lamelle de phase pour affichage a cristaux liquides
EP0591536A1 (fr) * 1991-06-25 1994-04-13 Nippon Zeon Co., Ltd. Lame de phase
WO1996038743A1 (fr) * 1995-06-02 1996-12-05 Hoechst Celanese Corporation Films polarisants comprenant des polymeres liquides cristallins totalement aromatiques et des colorants dichroiques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397263A1 (fr) * 1989-05-10 1990-11-14 Koninklijke Philips Electronics N.V. Procédé pour la fabrication d'un filtre de polarisation, filtre de polarisation ainsi obtenu et dispositif d'affichage muni du filtre de polarisation
EP0587890A1 (fr) * 1991-06-07 1994-03-23 Nippon Zeon Co., Ltd. Lamelle de phase pour affichage a cristaux liquides
EP0591536A1 (fr) * 1991-06-25 1994-04-13 Nippon Zeon Co., Ltd. Lame de phase
WO1996038743A1 (fr) * 1995-06-02 1996-12-05 Hoechst Celanese Corporation Films polarisants comprenant des polymeres liquides cristallins totalement aromatiques et des colorants dichroiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6042902A (en) * 1997-10-20 2000-03-28 Hoechst Celanese Corporation Adhesives for making multilayer films comprising liquid crystalline polymers and poly(ethylene terephthalate) or polycarbonate
US6015524A (en) * 1997-10-20 2000-01-18 Hoechst Celanese Corporation Adhesives for making multilayer films comprising liquid crystalline polymers and polyethylene
EP1102108A2 (fr) * 1999-11-18 2001-05-23 Nitto Denko Corporation Film de protection pour la surface d'un affichage à cristal liquide, affichage à cristal liquide protégé par un tel film et méthode de protection de la surface d'un affichage à cristal liquide avec un tel film
EP1102108A3 (fr) * 1999-11-18 2003-12-10 Nitto Denko Corporation Film de protection pour la surface d'un affichage à cristal liquide, affichage à cristal liquide protégé par un tel film et méthode de protection de la surface d'un affichage à cristal liquide avec un tel film
US6985292B2 (en) * 1999-12-28 2006-01-10 Gunze Co., Ltd. Polarizing plate and liquid-crystal display containing the same
US6882474B2 (en) 2000-01-13 2005-04-19 Nitto Denko Corporation Optical path changing polarizer
EP1143269A2 (fr) * 2000-01-13 2001-10-10 Nitto Denko Corporation Polariseur pour changer le chemin optique
EP1143269A3 (fr) * 2000-01-13 2002-10-09 Nitto Denko Corporation Polariseur pour changer le chemin optique
US6659615B2 (en) 2000-01-13 2003-12-09 Nitto Denko Corporation Light pipe and method for producing the same
US7227685B2 (en) 2000-01-13 2007-06-05 Nitto Denko Corporation Optical film and liquid-crystal display device
US6747801B2 (en) 2000-01-13 2004-06-08 Nitto Denko Corporation Optical film and liquid-crystal display device
US6917473B2 (en) 2000-01-13 2005-07-12 Nitto Denko Corporation Optical film and liquid-crystal display device
US6636358B2 (en) 2000-02-02 2003-10-21 Nitto Denko Corporation Optical film
US6751023B2 (en) 2000-02-02 2004-06-15 Nitto Denko Corporation Optical film
US6888595B2 (en) 2000-02-14 2005-05-03 Nitto Denko Corporation Reflector and liquid-crystal display device
US6729736B2 (en) 2000-10-24 2004-05-04 Nitto Denko Corporation Light pipe, planar light source unit and reflection type liquid-crystal display device
US6827457B2 (en) 2001-03-12 2004-12-07 Nitto Denko Corporation Light pipe, planar light source unit and reflective liquid-crystal display device
US6900937B2 (en) 2001-07-19 2005-05-31 Nitto Denko Corporation Optical element, polarizing plate and method for manufacturing thereof, protective film for optical element, optical film using optical element, and visual display
US7535017B2 (en) * 2003-05-30 2009-05-19 Osram Opto Semiconductors Gmbh Flexible multilayer packaging material and electronic devices with the packaging material
JP2019089344A (ja) * 2011-08-03 2019-06-13 リンテック株式会社 ガスバリア性粘着シート、その製造方法、並びに電子部材及び光学部材

Also Published As

Publication number Publication date
TW380096B (en) 2000-01-21
AU3287097A (en) 1998-01-07
ZA975270B (en) 1998-12-14

Similar Documents

Publication Publication Date Title
US5738918A (en) Laminates of liquid crystalline polymeric films for polarizer applications
KR100762837B1 (ko) 이축광학 폴리노보넨계 필름 및 이의 제조방법, 이를 구비한 일체형 광학보상 편광판 및 이의 제조방법, 및 이 필름 및/또는 편광판을 포함하는 액정표시장치
JP5072747B2 (ja) 偏光子の製造方法、偏光子、偏光板、光学フィルムおよび画像表示装置
KR101086124B1 (ko) 편광자의 제조 방법, 편광자, 편광판, 광학 필름 및 화상 표시 장치
KR100822247B1 (ko) 광학 필름 및 화상 표시 시스템
US7042540B2 (en) Optical film and display system
US6897916B2 (en) Polarizing plate, optical element, and liquid crystal display
KR100849873B1 (ko) 편광판, 광학 필름 및 화상 표시 장치
US20050243245A1 (en) Polarizing plate and production process of the same
EP1998196B9 (fr) Film de polarisation en couches, film a difference de phase et ecran a cristaux liquides
WO1997047467A1 (fr) Polymeres cycliques d'olefine servant d'ecrans d'humidite utilisables dans le cas des polariseurs
WO1993002381A1 (fr) Film polariseur pour afficheur a cristaux liquides
KR20070004045A (ko) 원편광판, 광학 필름, 및 화상 표시 장치
JP2003121641A (ja) 積層位相差板、偏光部材及び液晶表示装置
US7466382B2 (en) Optical film and image display
WO2003091767A1 (fr) Procede de production d'un film birefringent
KR20050098867A (ko) 광대역 콜레스테릭 액정 필름 및 제조 방법, 원편광판,직선 편광자, 조명 장치 및 액정 표시 장치
KR20070011265A (ko) 타원편광판, 광학 필름 및 화상 표시 장치
US20060023147A1 (en) Laminated retardation plate, polarizing plate with retardation plate, image display and liquid crystal display
KR20080047400A (ko) 광학 보상층 부착 편광판, 광학 보상층 부착 편광판을사용한 액정 패널, 액정 표시 장치, 및 화상 표시 장치
TWI737807B (zh) 光學積層體及圖像顯示裝置
KR20070011256A (ko) 광학 필름 및 화상 표시 장치
KR20070003910A (ko) 편광자, 편광판, 광학 필름 및 화상 표시 장치
JP2007010863A (ja) 位相差フィルム及びその製造方法
JP2005049792A (ja) 液晶パネルおよびそれを用いた液晶表示装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP KR MX

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: CA

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 98501621

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase