WO2012005432A2 - 광반응성 작용기를 갖는 화합물, 광반응성 중합체 및 이를 포함하는 배향막 - Google Patents
광반응성 작용기를 갖는 화합물, 광반응성 중합체 및 이를 포함하는 배향막 Download PDFInfo
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/02—Alignment layer characterised by chemical composition
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
Definitions
- the present invention relates to a novel compound having a photoreactive functional group, a photoreactive polymer, and an alignment film comprising the same. More specifically, the present invention exhibits excellent alignment stability and thermal stability along with excellent liquid crystal alignment property, and thus photoreactive polymers which can be preferably used in alignment films of liquid crystal display devices, photoreactive functional groups used as monomers for obtaining them, and the like. It relates to a compound having an and an alignment film.
- the thin film transistor liquid crystal display (TFT-LCD) driven by the thin film transistor independently drives individual pixels, so that the response speed of the liquid crystal is very high and a high quality moving image can be realized.
- liquid crystal As an optical switch in such a TFT-LCD, the liquid crystal must be initially oriented in a predetermined direction on a layer on which the innermost thin film transistor of the display cell is formed.
- a liquid crystal alignment layer is used for this purpose.
- a rubbing process in which a heat-resistant polymer such as polyimide is applied on a transparent glass to form a polymer alignment layer, and a rubbing process for rubbing the alignment layer while rotating a rotating roller wrapped with a rubbing cloth such as nylon or rayon at high speed is performed. has been applied.
- the rubbing process may cause mechanical scratches on the surface of the liquid crystal aligning agent during rubbing, or may cause high static electricity, thereby destroying the thin film transistor.
- the fine fibers generated in the rubbing cloth The defects are generated due to the failure to improve the production yield.
- liquid crystal alignment (hereinafter, referred to as "optical alignment") by light such as UV.
- Photo-alignment refers to a mechanism that forms photopolymerizable liquid crystal alignment layers in which liquid crystals are oriented by photosensitive groups bonded to a constant photoreactive polymer by linearly polarized UV, causing photoreaction to occur in the process.
- photoalignment polymers used in these patents and papers are mainly polycinnamate-based polymers such as poly (vinyl cinnamate) (PVCN) or poly (vinyl methoxycinnamate (PVMC).
- Japanese Patent Laid-Open No. Hei 11-181127 discloses a polymer having a side chain including a photosensitive group such as cinnamic acid group in a main chain such as acrylate and methacrylate, and an alignment film comprising the same.
- Korean Patent Laid-Open Publication No. 2002- 0006819 discloses the use of an alignment film made of a polymethacrylic polymer.
- the above-described photo-alignment polymers have disadvantages such as poor thermal stability of the polymer main chain, which lowers the alignment stability or thermal stability of the alignment layer, or the liquid crystal alignment.
- a polymer having an acrylic main chain has a disadvantage of significantly lowering the stability of the alignment layer due to low thermal stability, and when the photosensitive group is bound to the main chain, it does not react quickly to the polarized light irradiated onto the alignment layer, so that the liquid crystal alignment or alignment speed is high.
- liquid crystal alignment or orientation When the speed is lowered, the process efficiency may be lowered or the liquid crystal alignment of the liquid crystal display device may not be sufficient, resulting in a small dichroic ratio and deterioration in contrast.
- the present invention exhibits excellent thermal stability together with excellent liquid crystal alignment property, thereby providing a compound having a photoreactive polymer which can be preferably used in alignment films and the like of a liquid crystal display, and a photoreactive functional group used as a monomer for obtaining the same. will be.
- the present invention is to provide an alignment film exhibiting excellent liquid crystal alignment and stability by including the photo-banung polymer as a photo-alignment polymer.
- the present invention provides a compound of formula 1 having a photoreactive functional group:
- A is a cyclic olefin group ring
- R is a functional group substituted with at least one A, at least one is a radical of the formula la, and the rest are each independently hydrogen; halogen; Cyano; Substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms,
- D and D ' are each independently a simple bond, nitrogen, oxygen sulfur, substituted or unsubstituted linear or branched alkylene having 1 to 20 carbon atoms; Substituted or unsubstituted cycloalkylene having 3 to 12 carbon atoms; Substituted or unsubstituted linear or alkylene oxide having 1 to 20 carbon atoms; And substituted or unsubstituted carbon number
- X and Y are each independently hydrogen; halogen; Cyano; And substituted or unsubstituted C1-C1
- R13 and R14 are each independently hydrogen, halogen, cyano, substituted or unsubstituted alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted carbon number
- R 15 is one or two substituents, each independently, hydrogen, halogen, cyano, substituted or unsubstituted alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted alkoxy having 1 to 20 carbon atoms; Substituted or unsubstituted aryloxy having 6 to 30 carbon atoms; Substituted or unsubstituted aryl having 6 to 40 carbon atoms; It is selected from the group consisting of hetero aryl having 6 to 40 carbon atoms containing hetero group 14, 15 or 16 hetero elements, and substituted or unsubstituted alkoxyaryl having 6 to 40 carbon atoms.
- the present invention provides a photo-banung polymer comprising a repeating unit of the formula (1):
- 111 is 50 to 5000
- a ' is a cyclic olefin repeat unit
- R is as defined in the general formula (1).
- Such photoreactive polymers may further comprise one or more repeating units selected from the group consisting of Formulas 2 and 3:
- n and 0 are each independently 50 to
- R14 is as defined in formula la above and is selected the same or differently as in formula la above.
- the present invention also provides an alignment film comprising the photoreactive polymer.
- the present invention provides novel specific compounds having photoreactive functional groups and specific photoreactive polymers prepared therefrom. Since the photo-banung polymer contains a predetermined cyclic olefin-based repeat unit, it has a high glass transition temperature and exhibits excellent thermal stability, thereby providing excellent orientation stability and thermal stability. It becomes possible to provide the oriented film shown.
- the photoreaction polymer and the alignment layer including the same may not only exhibit excellent liquid crystal alignment and alignment speed, but also may control the light reaction speed and the liquid crystal alignment speed by UV according to various repeating units or substituents. Therefore, the photo-reflective polymer may be preferably applied as a photo-alignment polymer in an alignment film applied to various liquid crystal display devices and the like, and the alignment film including the same may exhibit excellent characteristics.
- 1 schematically shows an example of a conventional alignment film structure.
- 2 is NMR data of a compound obtained in Preparation Example 1-2.
- FIG. 3 is NMR data of a compound obtained in Preparation Example 2.
- A is a cyclic olefin ring
- R is one or more functional groups substituted with A, at least one is a radical of the formula la, and the rest are each independently hydrogen; halogen; Cyano; Substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms, [Formula la]
- D and D ' are each independently a simple bond, nitrogen, oxygen, sulfur, substituted or unsubstituted linear or branched alkylene having 1 to 20 carbon atoms; Substituted or unsubstituted cycloalkylene having 3 to 12 carbon atoms; Selected from the group consisting of substituted or unsubstituted linear or branched alkyleneoxa having 1 to 20 carbon atoms and substituted or unsubstituted cycloalkylene oxide having 3 to 12 carbon atoms; Or, X and Y are each independently hydrogen; halogen; Cyano; And substituted or unsubstituted carbon number Selected from the group consisting of 20 linear or branched alkyl, and RIO, Rll, R12, R13, and R14 are each independently hydrogen, halogen, cyano, substituted or unsubstituted alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted or unsubstitute
- the compound of Formula 1 may be used as a light semi-fouling compound per se, or may be used to provide a light semi-fung polymer of a specific structure through a polymerization method described below.
- photo-reflective polymer having a specific structure.
- photoreaction polymers may comprise repeating units of formula (I): [Formula 1]
- m is 50 to 5000
- a ′ is a cyclic-lepin-based repeating unit
- R is as defined in the general formula (1).
- the photo-banung polymer may be a single polymer including only the repeating unit of Formula 1, but may further include one or more selected from the group consisting of the following Formulas 2 and 3 together with the repeating unit of Formula 1 as a repeating unit. It may also be a copolymer. In addition, within the scope of not impairing the properties of the formula (1), of course, it may further include a variety of other repeating units:
- n and 0 are each independently 50 to 5000, A ′′ is a cyclic olefin repeat unit, B is an olefin repeat unit, and R 'is one or more functional groups substituted with A ′′.
- R14 is as defined in formula la above and is selected the same or differently as in formula la above.
- the photoreactive polymer obtainable from the compound of Formula 1 essentially includes a cyclic olefin-based repeat unit of Formula 1, which is structurally hard and has a glass transition temperature (Tg) of at least 200 ° C. , Preferably, since it is relatively high at 200 to 350 ° C., it can exhibit excellent thermal stability compared to the conventionally known photo-banung polymer. Therefore, it becomes possible to provide an alignment film that exhibits excellent orientation stability and thermal stability by using such a photoreaction polymer.
- Tg glass transition temperature
- a repeating unit obtained by linking a chalcone structure or cinnamate structure that exhibits photoreaction property to a cyclic olefin-based or olefin-based repeating unit or the like e.g., a repeating unit of Formula 1, and optionally, Formula 2 and / or 3 repeating units
- the double bond of the photoreactive functional group is more easily broken to form a [2 + 2] bond.
- the photoreaction polymer may exhibit excellent photoreaction properties
- the alignment layer including the photoreaction polymer may exhibit excellent liquid crystal alignment.
- the photoreaction polymer can control the liquid crystal alignment rate while varying the type and ratio of repeating units included therein or the types of various substituents substituted for each repeating unit. For example, each iteration When a strong electron acceptor group, such as fluorine or nitro, is bonded to the unit with a substituent, the double bond of the chalcone structure or cinnamate structure is more easily broken, so that the photoreaction polymer can exhibit faster photoreaction, and the liquid crystal alignment rate of the alignment film is increased. It can be faster.
- a strong electron acceptor group such as fluorine or nitro
- the photoreactive polymer enables the provision of an alignment film exhibiting excellent stability and liquid crystal alignment, and may control the liquid crystal alignment rate, and thus, the photoreactive polymer may be very preferably applied as an optical alignment polymer to alignment films of various liquid crystal display devices.
- the compound of Formula 1 may be, for example, a norbornene-based compound represented by the following general formula lb:
- q is an integer of 0 to 4
- at least one of R1, R2, R3 and R4 is a radical of the formula la, the remainder are each independently hydrogen; halogen; Cyano; Substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms.
- representative photoreactive polymers belonging to the general formula (1) can be obtained by a method such as addition polymerization or ring-opening polymerization of such norbornene-based compounds. More specifically, the general formula By addition polymerization of the norbornene-based compound of lb, it is possible to provide a photoreactive polymer comprising a norbornene-based repeating unit of the formula (lb), and can provide a photoreactive polymer comprising a repeating unit of the formula (lc) by ring-opening polymerization have:
- m is 50 to 5000
- q is an integer from 0 to 4
- at least one of Rl, R2, R3 and R4 is a radical of formula la, and the rest are each independently hydrogen; halogen; Cyano; Substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms.
- the photoreaction polymer containing the same may exhibit better thermal stability, and the orientation stability and thermal stability of the alignment layer. Stability can be further improved.
- the degree of bonding between the repeating unit and the photoreactive functional group can be appropriately maintained, so that the liquid crystal alignment of the alignment film can be excellently maintained.
- the photoreaction polymer may include various cyclic olefin repeat units belonging to the scope of Formula 1 in addition to the formula lb and lc.
- At least one of the RIO, Rll, R12, R13, and R14 may be halogen or alkyl of 1 to 20 carbon atoms substituted with halogen. More specifically, such halogens may be fluorine, chlorine, bromine and iodine, preferably fluorine.
- the photoreaction polymer may exhibit excellent photoreactivity and may be included in an alignment layer to exhibit excellent liquid crystal alignment. This seems to be because the halogen substituent can cause the composition slope in the alignment film to be stronger.
- the composition slope refers to a phenomenon in which the degree of distribution of the binder resin and the photo-alignment polymer in the alignment layer varies depending on the distance from the substrate. For example, when the coating composition comprising the binder resin and the photo-alignment polymer is coated on a substrate, UV curing is performed to form an alignment layer. The further away there may be more photoalignment polymers, and vice versa.
- a composition slope phenomenon can be raised more strongly.
- a halogen substituent for example, a fluorine-containing substituent
- the photoreactive polymer may be present far from the substrate (for example, toward the liquid crystal in the structure shown in FIG. 1).
- the alignment film including the same can exhibit more excellent liquid crystal alignment.
- the photobanung polymer further includes a repeating unit of Formula 2
- a repeating unit may also be a variety of cyclic olefin-based repeating units, for example, norbornene-based repeat represented by the following formula (2b) or (2c) Can be in units: [
- n is 50 to 5000
- q ' is an integer of 0 to 4
- the rest are each independently , Hydrogen; halogen; Cyano; Substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms.
- the norbornene-based repeating unit has a high glass transition temperature and structural rigidity, as the repeating unit of Formula 2 becomes the norbornene-based repeating unit of Formula 2b or 2c, the photo-cyclic polymer and alignment layer including the same This even more excellent thermal stability and orientation stability can be exhibited.
- the photo-banung polymer further comprises a repeating unit of the formula (3) together with the repeating unit of the formula (1), such a repeating unit may be an olefin repeat unit represented by the formula (3a):
- R1 ′′, R2 ′′, R3 ′′ and R4 ′′ are each independently a radical of Formula la; A radical of Formula 2a; Hydrogen; halogen; Cyano; Substituted or unsubstituted C1-20 Linear or branched alkyl; Substituted or unsubstituted linear or branched alkenyl having 2 to 20 carbon atoms; Substituted or unsubstituted linear or branched alkynyl having 2 to 20 carbon atoms; Substituted or unsubstituted cycloalkyl having 3 to 12 carbon atoms; And substituted or unsubstituted aryl having 6 to 40 carbon atoms.
- Such olefin repeat units may or may not include photocyclic functional groups, and may be acyclic olefin repeat units that are distinct from the cyclic olefin repeat units described above.
- By adjusting it is possible to easily control the overall physical properties of the above-described light semi-reflective polymer and the alignment layer including the same, for example, photo-reflective property, liquid crystal alignment, alignment speed or stability.
- the photo-reflective polymer is a copolymer including the repeating unit of the formula (2) and / or 3, with the repeating unit of the formula (1), by adjusting the ratio of each of the repeating unit includes the photo-reflective polymer
- the overall physical properties of the alignment layer can be easily adjusted. Therefore, the ratio of the repeating units of Formulas 1 to 3 can be easily determined by those skilled in the art.
- the repeating units of Formulas 2 and 3 are 0.1 to 2.0 moles and 0.2 to 2.0, respectively. It may be included in the ratio of moles, and preferably may be included in the ratio of 0.5-2.0 moles and 0.5-2.0 moles.
- a photoreactive functional group for example, a radical of formula la or formula 2a, is formed at a position corresponding to Rl, R1 'or R1 ". It can be combined properly.
- the substituted or unsubstituted aryl having 6 to 40 carbon atoms; Or a hetero aryl having 6 to 40 carbon atoms including a hetero element of Group 14, 15 or 16 may be selected from the group consisting of the functional groups listed below, and in addition, may be various aryls or hetero aryls:
- R'10 to R'18 are each independently substituted or unsubstituted linear or branched alkyl having 1 to 20 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted carbon atoms Aryloxy having 6 to 30, and substituted or unsubstituted aryl having 6 to 40 carbon atoms.
- the photoreactive polymer repeats these
- Alternative Site (Article 26)
- the unit may further include additional repeating units, and may be a copolymer of various forms.
- the content ratio of the additional repeating unit may also be obvious to those skilled in the art in consideration of the properties of the photoreaction polymer to be obtained.
- the photo-banung polymer is from 10000 to 1000000, preferably
- the photo-banung polymer may be suitably included in the coating composition for forming the alignment layer to exhibit excellent coating properties, and the alignment layer formed therefrom may exhibit excellent liquid crystal alignment.
- alkyl means a linear or branched saturated monovalent hydrocarbon moiety of 1 to 20, preferably 1 to 10, more preferably 1 to 6 carbon atoms.
- the alkyl group may encompass not only unsubstituted but also further substituted by a certain substituent described below.
- alkyl groups include methyl, ethyl, propyl, 2-propyl, n-butyl, iso-butyl, tert-butyl, pentyl, nucleus, dodecyl, fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, Dichloromethyl, trichloromethyl, iodomethyl bromomethyl, etc. are mentioned.
- Alkenyl means a linear or branched monovalent hydrocarbon moiety of 2 to 20, preferably 2 to 10, more preferably 2 to 6 carbon atoms comprising at least one carbon-carbon double bond. . Alkenyl groups may be bonded through a carbon atom comprising a carbon-carbon double bond or through a saturated carbon atom. Alkenyl groups may be broadly referred to as unsubstituted as well as those further substituted by the following substituents. Examples of the alkenyl group include ethenyl, 1-propenyl, 2-propenyl, 2-butenyl, 3-butenyl, pentenyl, 5-nucleenyl, dodecenyl, and the like.
- Cycloalkyl means a saturated or unsaturated non-aromatic monovalent monocyclic, bicyclic or tricyclic hydrocarbon moiety of 3 to 12 ring carbons, including those further substituted by certain substituents described below. May be referred to. For example, cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclonuxyl, cyclonuxenyl, cycloheptyl, cyclooctyl, decahydronaphthalenyl, adamantyl, norbornyl (i.e., bicyclo [2,2, 1] hept-5-enyl).
- Aryl means a monovalent monocyclic, bicyclic or tricyclic aromatic hydrocarbon moiety having from 6 to 40, preferably from 6 to 12 ring atoms, encompassing those further substituted by certain substituents described below. May be referred to. Examples of the aryl group include phenyl, naphthalenyl, polorelenyl and the like.
- Alkoxyaryl ' means that at least one hydrogen atom of the aryl group defined above is substituted with an alkoxy group.
- alkoxyaryl group examples include methoxyphenyl, ethoxyphenyl, propoxyphenyl, butoxyphenyl, pen Oxyphenyl, nucleospecific phenyl, hepoxy, octoxy, nanoxy, methoxy biphenyl, methoxy naphthalenyl, methoxy fluorenyl, or methoxy cyanracenyl.
- Alkyl means that at least one hydrogen atom of the alkyl group as defined above is substituted with an aryl group, and may be referred to collectively further substituted by a specific substituent described below. For example, benzyl, benzhydryl, trityl, etc. are mentioned.
- Alkynyl means a linear or branched monovalent hydrocarbon moiety containing from 2 to 20 carbon atoms, preferably from 2 to 10, more preferably from 2 to 6 carbon atoms containing at least one carbon-carbon triple bond. do. Alkynyl groups may be bonded through a carbon atom comprising a carbon-carbon triple bond or through a saturated carbon atom. Alkynyl groups may also be referred to collectively further substituted by certain substituents described below. For example, ethynyl, propynyl, etc. are mentioned.
- Alkylene means a linear or branched saturated divalent hydrocarbon moiety of 1 to 20, preferably 1 to 10, more preferably 1 to 6 carbon atoms.
- the alkylene group can also be referred to collectively further substituted by certain substituents described below.
- methylene, ethylene, propylene, butylene, nuxylene, etc. are mentioned.
- Cycloalkylene means a saturated or unsaturated non-aromatic divalent monocyclic, bicyclic or tricyclic hydrocarbon moiety of 3 to 12 ring carbons, including those further substituted by certain substituents described below. May be referred to. For example, cyclopropylene, cyclobutylene, etc. are mentioned.
- Alkyloxide or "cycloalkyloxide” means a monovalent moiety in which at least one hydrogen atom of an alkyl group or cycloalkyl group as defined above is substituted with oxygen. Examples thereof include ethyl oxide, propyl oxide or cyclonucleooxide.
- Alkylene oxide or "cycloalkylene oxide” means a divalent moiety in which at least one hydrogen atom of the alkylene group or cycloalkylene group as defined above is substituted with oxygen. Examples thereof include ethylene oxide, propylene oxide or cyclonuclear oxide.
- substituted or unsubstituted means that not only these substituents themselves, but also those further substituted by constant substituents are encompassed.
- substituents which may be further substituted with each substituent include halogen, alkyl, alkenyl, alkynyl, haloalkyl, haloalkenyl, haloalkynyl aryl, haloaryl, aralkyl, haloaralkyl, alkoxy , Haloalcohol, carbonyloxy halocarbonyloxy, aryloxy, haloaryloxy, silyl or siloxy and the like.
- the compound of Formula 1 described above may be prepared through a conventional process such as preparing a compound for the photo-reflective functional group -R from a known compound, and then bonding a cyclic olefin ring A, Specific examples thereof are described in the following examples.
- the photoreaction polymer may be prepared according to a different polymerization method according to the type of each repeating unit.
- a polymer including a norbornene-based repeating unit of Formula lb as the repeating unit of Formula 1 or a norbornene-based repeating unit of Formula 2b as a repeating unit of Formula 2 may be used as monomers to produce them by addition polymerization.
- the addition polymerization is a group 10 transition metal It can proceed in the presence of a catalyst composition comprising a procatalyst and a cocatalyst comprising.
- the addition polymerization may be carried out at a temperature of 10 ° C to 200 ° C. If the reaction temperature is less than 10 ° C. polymerization activity may be lowered, and if the reaction temperature is larger than 200 " C, the catalyst may be decomposed, which is undesirable.
- the cocatalyst may include a first cocatalyst which provides a Lewis base capable of weakly coordinating with the metal of the procatalyst; And a second co-catalyst for providing a compound comprising a group 15 electron donor ligand may comprise one or more selected from the group consisting of.
- the cocatalyst may be a catalyst mixture comprising a first cocatalyst that provides the Lewis base, and optionally a second cocatalyst of a compound comprising a neutral Group 15 electron donor ligand.
- the catalyst mixture may include 1 to 1000 moles of the first cocatalyst with respect to 1 mole of the procatalyst, and may include 1 to 1000 moles of the second cocatalyst.
- the catalyst activation may not be performed properly, on the contrary, when the content of the first or second cocatalyst is too large, the catalytic activity may be lowered.
- the procatalyst including the Group 10 transition metal may be easily separated by a first cocatalyst providing a Lewis base so that the central transition metal may be converted into a catalytically active species. It is possible to use compounds having Lewis base functional groups which break away from the metal. Such as [(Allyl) Pd (Cl)] 2 (Allylpalladiumchloride dimer), (CH 3 C0 2 ) 2 Pd [Palladiumi ⁇ ) acetate], [CH 3 C0C1H: (0—) C3 ⁇ 4] 2 Pd
- the first cocatalyst which provides a Lewis base capable of weakly coordinating with the metal of the procatalyst is easily reacted with the Lewis base to form a vacancy in the transition metal, and also in order to stabilize the transition metal thus formed.
- Compounds that provide weak coordination with metal compounds or compounds that provide them can be used.
- borane such as B (CeF 5 ) 3 or dimethylanilinium tetrakispentafluorophenyl borate (dimethylanilinium borates such as tetrakis (pentaf luorophenyl) borate), alkylaluminums such as methylaluminoxane (MAO) or AKC 2 H 5 ) 3, and transition metal halides such as black silver AgSbF 6 .
- B (CeF 5 ) 3 or dimethylanilinium tetrakispentafluorophenyl borate dimethylanilinium borates such as tetrakis (pentaf luorophenyl) borate
- alkylaluminums such as methylaluminoxane (MAO) or AKC 2 H 5 ) 3
- transition metal halides such as black silver AgSbF 6 .
- an alkyl phosphine, a cycloalkyl phosphine, or a phenyl phosphine may be used as a second cocatalyst to provide a compound including the neutral group 15 electron donor ligand.
- first and second cocatalysts may be used separately, these two cocatalysts may be used as a compound that activates the catalyst by making one salt into one salt.
- a compound made by ion bonding an alkyl phosphine and a borane compound may be used.
- the ring-opening polymerization is a procatalyst comprising a transition metal of Group 4 (eg Ti.Zr.Hf), Group 6 (eg Mo, W), Group 8 (eg Ru, 0s),
- a catalyst mixture comprising a cocatalyst that provides a Lewis base capable of weakly coordinating with the metal, and optionally a neutral group 15 and 16 activator that can enhance the activity of the procatalyst metal.
- a catalyst mixture comprising a cocatalyst that provides a Lewis base capable of weakly coordinating with the metal, and optionally a neutral group 15 and 16 activator that can enhance the activity of the procatalyst metal.
- 1-100 mol% of linear alkene such as 1-alkene and 2-alkene, which can adjust the molecular weight, is added to the monomer, at a temperature of 10 ° C.
- the polymerization can be proceeded, and thereafter, 1 to 30% by weight of a catalyst containing a transition metal of Group 4 (e.g. Ti, Zr) or Group 8 to 10 (e.g. Ru, Ni, Pd) is added.
- a catalyst containing a transition metal of Group 4 e.g. Ti, Zr
- Group 8 to 10 e.g. Ru, Ni, Pd
- the reaction can be carried out by hydrogenating the double bond remaining in the main chain at a temperature of 10 ° C to 250 ° C.
- each monomer is a Group 4 transition such as zirconium or titanium Metal It may be prepared by polymerizing in the presence of a catalyst composition comprising a procatalyst and a cocatalyst to be included, or may be prepared by polymerizing in the presence of an azo or peroxide compound.
- a catalyst composition comprising a procatalyst and a cocatalyst to be included, or may be prepared by polymerizing in the presence of an azo or peroxide compound.
- an alignment film comprising the above-described light semi-reflective polymer.
- Such an alignment film may also include an alignment film in the form of a film as well as a thin film.
- Such an alignment layer may be manufactured using components and manufacturing methods known in the art, except for including the above-described photoreactive polymer as a photoalignment polymer.
- the alignment layer may be formed by mixing the photoreactive polymer, the binder resin and the photoinitiator and dissolving it in an organic solvent to obtain a coating composition, and then coating the coating composition on a substrate and performing UV curing.
- the binder resin may be an acrylate-based resin, more specifically, pentaerythritol triacrylate, dipentaerythroxy nuxaacrylate, trimethyl propane triacrylate, tris (2-acryl Monooxyethyl) isocyanurate or the like can be used.
- a conventional photoinitiator known to be usable for the alignment layer may be used without particular limitation, and for example, a photoinitiator known under the trade names Irgacure 907 and 819 may be used.
- the organic solvent toluene, anisole, chlorobenzene, dichloroethane, cyclonucleic acid, cyclopentane, propylene glycol methyl ether acetate and the like can be used. Since the photobanung norbornene-based copolymer described above exhibits excellent solubility in various organic solvents, various organic solvents may be used without particular limitation.
- the solid content concentration including the photoreactive polymer, the binder resin, and the photoinitiator may be 1 to 15% by weight, and in order to cast the alignment layer into a film, 10 to 15% by weight is preferable, and a thin film form In order to form, 1 to 5% by weight is preferable.
- the alignment layer thus formed may be formed on the substrate, for example, as shown in FIG. 1, and may be formed under the liquid crystal to align the same.
- the substrate may include a substrate including a cyclic polymer, a substrate including an acrylic polymer, or a substrate including a cellulose polymer. After coating on the substrate by a method can be UV cured to form an alignment film.
- preferred embodiments are provided to help understanding of the present invention. However, the following examples are only for illustrating the present invention, and the present invention is not limited thereto.
- Example 2 The photo-banung polymer using the monomer was dissolved in a c-pentanone solvent at a concentration of 2 weight 3 ⁇ 4, and dried on a substrate having a thickness of 80 microns of polyethylene terephthalate (trade name: SH71, manufactured by SKC of Korea). After was coated by a coating method so that the thickness is 1000A. Then, by heating for 3 minutes at 80 ° C Aubon remove the solvent inside the coating film to form a coating film. The exposure was performed using a high-pressure mercury lamp of 200mW / oif intensity as a light source and irradiating the coated film for 5 seconds with UV polarized perpendicular to the film's traveling direction using a Moxtek wire-grid flamer. To give an orientation to form an alignment film.
- liquid crystal content 100 parts by weight of the liquid crystal solution per 25 parts by weight of the solid polymer mixed with 95.0% by weight of the ultraviolet polymerizable cyano biphenyl acrylate and 5.0% by weight of Igacure 907 (manufactured by Ciba - Geigy, Switzerland) as a photoinitiator was added. It was dissolved in toluene to prepare a polymerizable reactive liquid crystal solution.
- the prepared liquid crystal solution was coated on the photoalignment film formed by the coating method such that the thickness after drying was I / an, and then dried at 80 ° C. for 2 minutes to align the liquid crystal molecules.
- the aligned liquid crystal film was irradiated with non-polarized UV light having a high-pressure mercury lamp of 200 mW / oif intensity as a light source to fix the alignment state of the liquid crystal to prepare a retardation film.
- Orientation of the prepared retardation film was compared by measuring the light leakage between the polarizing plate by the transmission (transmittance), the quantitative retardation value was measured using Axoscan (manufactured by Axomatrix).
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Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP11803718.3A EP2592065B1 (en) | 2010-07-07 | 2011-03-28 | Compound having a photoreactive functional group, a photoreactive polymer, and an alignment layer including same |
CN201180030975.3A CN102958903B (zh) | 2010-07-07 | 2011-03-28 | 具有光反应性官能团的化合物、光反应性聚合物以及包含该聚合物的取向膜 |
JP2013513098A JP5744188B2 (ja) | 2010-07-07 | 2011-03-28 | 光反応性作用基を有する化合物、光反応性重合体及びこれを含む配向膜 |
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KR1020110027125A KR101307494B1 (ko) | 2010-07-07 | 2011-03-25 | 광반응성 작용기를 갖는 화합물, 광반응성 중합체 및 이를 포함하는 배향막 |
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US (1) | US8449954B2 (ko) |
EP (1) | EP2592065B1 (ko) |
JP (1) | JP5744188B2 (ko) |
KR (2) | KR101307494B1 (ko) |
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EP2811005B1 (en) * | 2012-02-02 | 2018-04-18 | LG Chem, Ltd. | Liquid crystal composition |
KR101515527B1 (ko) * | 2012-08-21 | 2015-04-27 | 주식회사 엘지화학 | 광학 이방성 필름 |
CN104619772B (zh) * | 2012-09-10 | 2017-08-25 | Lg化学株式会社 | 用于光取向层的组合物及光取向层 |
KR101718941B1 (ko) * | 2013-09-30 | 2017-03-22 | 주식회사 엘지화학 | 광반응기를 갖는 고리형 올레핀 화합물 및 광반응성 중합체 |
KR101719686B1 (ko) | 2013-09-30 | 2017-03-24 | 주식회사 엘지화학 | 광반응성 공중합체 및 이를 포함하는 배향막 |
WO2015099377A1 (ko) | 2013-12-27 | 2015-07-02 | 주식회사 엘지화학 | 염료형 편광체 형성용 조성물 및 염료형 편광체 |
KR101732687B1 (ko) | 2013-12-27 | 2017-05-04 | 주식회사 엘지화학 | 염료형 편광체 형성용 조성물 및 염료형 편광체 |
US10615376B2 (en) * | 2014-07-31 | 2020-04-07 | Basf Coatings Gmbh | Encapsulation structure for an OLED display incorporating antireflection properties |
KR101746789B1 (ko) * | 2014-12-18 | 2017-06-13 | 주식회사 엘지화학 | 고리형 올레핀 화합물의 (공)중합체를 포함하는 수직 배향막 |
WO2016099178A1 (ko) * | 2014-12-18 | 2016-06-23 | 주식회사 엘지화학 | 고리형 올레핀 화합물 공중합체를 포함하는 수직 배향막 |
KR102542188B1 (ko) * | 2018-01-16 | 2023-06-13 | 삼성디스플레이 주식회사 | 편광 필름, 이의 제조방법 및 상기 편광 필름을 포함하는 표시장치 |
CN111212828B (zh) * | 2018-06-20 | 2023-07-21 | Lg化学株式会社 | 改性聚合引发剂及其制备方法 |
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- 2011-03-28 WO PCT/KR2011/002114 patent/WO2012005432A2/ko active Application Filing
- 2011-03-28 CN CN201180030975.3A patent/CN102958903B/zh active Active
- 2011-07-06 US US13/177,399 patent/US8449954B2/en active Active
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KR20120007564A (ko) | 2012-01-20 |
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EP2592065A4 (en) | 2016-06-01 |
WO2012005432A3 (ko) | 2012-03-01 |
CN102958903B (zh) | 2015-08-12 |
JP5744188B2 (ja) | 2015-07-01 |
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US8449954B2 (en) | 2013-05-28 |
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