WO2016187948A1 - 一种液晶介质组合物 - Google Patents

一种液晶介质组合物 Download PDF

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Publication number
WO2016187948A1
WO2016187948A1 PCT/CN2015/085372 CN2015085372W WO2016187948A1 WO 2016187948 A1 WO2016187948 A1 WO 2016187948A1 CN 2015085372 W CN2015085372 W CN 2015085372W WO 2016187948 A1 WO2016187948 A1 WO 2016187948A1
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group
membered ring
ring structure
liquid crystal
medium composition
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English (en)
French (fr)
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钟新辉
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/783,865 priority Critical patent/US10073300B2/en
Publication of WO2016187948A1 publication Critical patent/WO2016187948A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • 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
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    • 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
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • C09K19/3001—Cyclohexane rings
    • C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
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    • 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
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • C09K19/3001—Cyclohexane rings
    • C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
    • 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
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • C09K19/3001—Cyclohexane rings
    • C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
    • C09K19/3068—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers chain containing -COO- or -OCO- groups
    • 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
    • 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
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54—Additives having no specific mesophase characterised by their chemical composition
    • C09K19/56—Aligning agents
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • 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
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • 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 
    • G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0316—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a liquid crystal medium composition.
  • TFT-LCD liquid crystal displays in the mainstream market can be divided into three categories: Twisted Nematic, Twisted Nematic, IPS (In-Plane Switching) plane conversion and VA. (Vertical Alignment) Vertical alignment type.
  • VA type LCD has a very high contrast ratio compared with other types of LCDs, and the contrast ratio is generally 4000-8000, which has a very wide application in large-size display.
  • the liquid crystal molecules are arranged perpendicular to the surface of the substrate, and no phase difference is generated, the light leakage is extremely low, and the dark state brightness is small, so that the contrast is extremely high.
  • the liquid crystal display panel includes a first substrate 10 , a second substrate 20 , and a liquid crystal layer 30 .
  • the first substrate 10 is provided with a first transparent electrode layer 11
  • the second substrate 20 is provided with a second transparent electrode layer. 21; inside the first transparent electrode layer 11 and the second transparent electrode layer 21
  • the vertical alignment agent is coated.
  • the alignment agent generally contains a large amount of chemical solvent NMP (N-methylpyrrolidone) and a polymer material polyimide (PI), and then the two substrates are at a high temperature (generally 200 degrees Celsius).
  • the above is baked for a long period of time, and the solvent in the alignment agent is baked to form the first PI alignment layer 12 and the second PI alignment layer 22 on the inside of the first substrate 10 and the second substrate 20, respectively.
  • the partial solvent NMP N-methylpyrrolidone
  • the partial solvent NMP N-methylpyrrolidone
  • the process of PI alignment layer has high energy consumption, is not environmentally friendly, and is easy to cause harm to the human body; in addition, due to the uniformity of the alignment layer, lack of coating, non-sticking and the like, it also affects the product yield. , resulting in waste of resources, thereby increasing production costs.
  • liquid crystal medium composition comprising:
  • auxiliary alignment agent comprising a polar portion and a non-polar portion, said polar Partially linked to the non-polar moiety by a linking group;
  • L1 represents a first six-membered ring structure on the non-polar portion
  • L2 represents a second six-membered ring structure on the polar portion
  • L3 represents a portion located in the polar portion a third six-membered ring structure
  • L4 represents a fourth six-membered ring structure on the polar portion
  • h is a benzene ring attached to the non-polar portion or the first six-membered ring structure a first substituent group
  • m is the number of the benzene ring of the same non-polar moiety or the first substituent group of the same first six-membered ring structure
  • m is an integer of 0-4;
  • T1 is a first tail group on the first six-membered ring structure, and comprises a molecular chain of 1-25 carbon atoms; the first tail group is selected from -O-, -COO-, - One of OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, and -COCH2-;
  • a is a benzene ring attached to the polar moiety or the second six-membered ring structure or a third six-membered ring structure or a second substituent group on the fourth six-membered ring structure, wherein n is a benzene ring on the same polar moiety or the same second six-membered ring structure or the same a number of a second six-membered ring structure or a second substituent group on the same fourth six-membered ring structure, n is an integer of 0-4, and T2 is a benzene ring on the polar moiety or the first a second six-membered ring structure or a second terminal group of the fourth six-membered ring structure or a fourth terminal group of the fourth six-membered ring structure, comprising a molecular chain of 1 to 25 carbon atoms;
  • the group is selected from at least one of F, Cl, Br, CN, a hydroxyl group, a primary amino
  • X is the linking group which is an ether bond or a molecular chain containing 1 to 10 carbon atoms.
  • the first six-membered ring structure, the second six-membered ring structure, the third six-membered ring structure, and the fourth six-membered ring structure are a benzene ring or a ring Hexane.
  • the linking group is selected from the group consisting of -O-, -COO-, -OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, and -COCH2- One.
  • the first substituent group is selected from the group consisting of F, Cl, Br, CN, a linear chain of 1 to 10 carbon atoms, and a branched alkyl group of 1 to 10 carbon atoms. At least one.
  • the second substituent group is selected from the group consisting of F, Cl, Br, CN, a hydroxyl group, a primary amino group, a secondary amino group, a tertiary amino group, an ether group, an ester group, At least one of a carbonyl group, a linear chain of 1 to 10 carbon atoms, and a branched alkyl group of 1 to 10 carbon atoms.
  • the formula 1 is specifically the following structure:
  • the formula 2 is specifically the following structure:
  • the third formula is specifically the following structure:
  • liquid crystal medium composition comprising:
  • auxiliary alignment agent comprising a polar portion and a non-polar portion, said polar Partially linked to the non-polar moiety by a linking group;
  • L1 represents a first six-membered ring structure on the non-polar portion
  • L2 represents a second six-membered ring structure on the polar portion
  • L3 represents a portion located in the polar portion a third six-membered ring structure
  • L4 represents a fourth six-membered ring structure on the polar portion
  • h is a benzene ring attached to the non-polar portion or the first six-membered ring structure a first substituent group
  • m being a benzene ring of the same non-polar moiety or a first substituent on the same first six-membered ring structure
  • the number of clusters, m is an integer from 0-4;
  • T1 is a first tail group on the first six-membered ring structure, and comprises a molecular chain of 1-25 carbon atoms;
  • a is a benzene ring or a second six-membered ring structure or a second substituent group on the fourth six-membered ring structure or the fourth six-membered ring structure attached to the polar moiety
  • n is the same a number of the benzene ring on the polar moiety or the same of the second six-membered ring structure or the same of the third six-membered ring structure or the second substituent group on the same fourth six-membered ring structure
  • n is an integer from 0 to 4
  • T2 is a benzene ring on the polar portion or the second six-membered ring structure or the third six-membered ring structure or the second tail of the fourth six-membered ring structure a terminal group comprising a molecular chain of 1 to 25 carbon atoms;
  • X is the linking group which is an ether bond or a molecular chain containing 1 to 10 carbon atoms.
  • the first six-membered ring structure, the second six-membered ring structure, the third six-membered ring structure, and the fourth six-membered ring structure are a benzene ring or a ring Hexane.
  • the first terminal group is selected from the group consisting of -O-, -COO-, -OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, and -COCH2. - One of them.
  • the second terminal group is selected from the group consisting of F, Cl, Br, CN, a hydroxyl group, a primary amino group, a secondary amino group, a tertiary amino group, an ether group, an ester group, and a carbonyl group. At least one of them.
  • the linking group is selected from the group consisting of -O-, -COO-, -OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, and -COCH2- One.
  • the first substituent group is selected from the group consisting of F, Cl, Br, CN, a linear chain of 1 to 10 carbon atoms, and a branched alkyl group of 1 to 10 carbon atoms. At least one.
  • the second substituent group is selected from the group consisting of F, Cl, Br, CN, a hydroxyl group, a primary amino group, a secondary amino group, a tertiary amino group, an ether group, an ester group, a carbonyl group, and 1 At least one of a straight chain of 10 carbon atoms and a branched alkyl group of 1 to 10 carbon atoms.
  • the formula 1 is specifically the following structure:
  • the formula 2 is specifically the following structure:
  • the third formula is specifically the following structure:
  • the liquid crystal medium composition of the invention can realize vertical alignment under the non-PI alignment layer by simplifying the liquid crystal material, simplify the structure and process of the liquid crystal display panel, reduce energy consumption and pollution, reduce production cost, and further improve display effect. .
  • FIG. 1 is a schematic structural view of a liquid crystal display panel of the prior art.
  • FIG. 2 is a schematic structural view of a liquid crystal display panel of the present invention.
  • the present invention provides a liquid crystal medium composition
  • a liquid crystal medium composition comprising: a negative liquid crystal material, at least one polymerizable monomer which is polymerizable under ultraviolet light irradiation, and at least one auxiliary alignment agent, the auxiliary alignment agent comprising a polarity a partial and a non-polar moiety, the polar moiety (a lateral portion of the formulae one to four) is linked to the non-polar moiety (a vertical portion of the formulae one to four) by a linking group;
  • the auxiliary alignment agent has the following The structure of one of the formulas:
  • L1 represents a first six-membered ring structure on the non-polar portion
  • L2 represents a second six-membered ring structure on the polar portion
  • L3 represents a portion located in the polar portion a third six-membered ring structure
  • L4 represents a fourth six-membered ring structure on the polar portion
  • the L1, L2, L3, L4 may be a benzene ring or cyclohexane
  • h is attached to the a benzene ring on the non-polar moiety or a first substituent group on the first six-membered ring structure
  • m is a benzene ring of the same non-polar moiety
  • the number of the first substituent groups on the first six-membered ring structure m is an integer from 0 to 4
  • the first substituent group may be selected from the group consisting of F, Cl, Br, CN, 1-10 At least one of a straight chain of carbon atoms and a
  • T1 is a first tail group on the first six-membered ring structure, and comprises a molecular chain of 1-25 carbon atoms; the first tail group may be selected from -O-, -COO-, One of -OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, -COCH2-.
  • a is a benzene ring or a second six-membered ring structure or a second substituent group on the fourth six-membered ring structure or the fourth six-membered ring structure attached to the polar moiety
  • n is the same a number of the benzene ring on the polar moiety or the same of the second six-membered ring structure or the same of the third six-membered ring structure or the second substituent group on the same fourth six-membered ring structure
  • n is an integer of 0-4
  • T2 is a benzene ring on the polar portion or the second six-membered ring structure or the third six-membered ring structure or the second on the fourth six-membered ring structure a tail group comprising a molecular chain of 1 to 25 carbon atoms
  • the second terminal group may be selected from the group consisting of F, Cl, Br, CN, hydroxyl, primary, secondary, tertiary, At least
  • the second substituent group may be selected from the group consisting of F, Cl, Br, CN, hydroxyl, primary, secondary, tertiary, ether, ester, carbonyl, straight chain of 1 to 10 carbon atoms, At least one of branched alkyl groups of 1 to 10 carbon atoms.
  • X is the linking group which is an ether bond or a molecular chain containing 1 to 10 carbon atoms.
  • the linking group may be selected from one of -O-, -COO-, -OCO-, -CH2O-, -OCH2O-, -O(CH2)2O-, -COCH2-.
  • a substituent on at least one of the six-membered ring structures in the polar moiety is a polar group
  • the substituent on the six-membered ring structure in the non-polar moiety is a non-polar group.
  • the number of the first substituent groups on each benzene ring or cyclohexane in the non-polar portion in any of the above formulas may be the same or different.
  • the number of each of the benzene rings or the second substituent groups on the cyclohexane in the polar moiety in any of the above formulas may be the same or different.
  • the formula 1 is specifically the following structure:
  • the second formula is specifically the following structure:
  • the third formula is specifically the following structure:
  • the fourth formula can be the following structure:
  • FIG. 2 is a schematic structural view of a liquid crystal display panel according to the present invention
  • the liquid crystal display panel of the present invention includes a first substrate 10, a second substrate 20, and a liquid crystal layer 30, and the first substrate 10 is provided with a first transparent
  • the electrode layer 11, the second substrate 20 is provided with a second transparent electrode layer 21; and the first alignment structure 31 and the second alignment structure 32 are formed inside the first substrate 10 and the second substrate 20, respectively.
  • the first substrate 10 may be an array substrate
  • the second substrate 20 may be a color filter substrate.
  • the first alignment structure and the second alignment structure are obtained by:
  • the auxiliary alignment agent After the auxiliary alignment agent is added to the liquid crystal, since the auxiliary alignment agent has a polar group and a non-polar group, wherein the polar group reacts with the first substrate and the second substrate, the non-polar group and the liquid crystal molecule The reaction is such that the liquid crystal molecules can be vertically aligned with respect to the surfaces of the first substrate and the second substrate of the liquid crystal display panel without the alignment layer. Since the auxiliary alignment agent is directly used in combination with the liquid crystal, no other solvent is dissolved, the coating device of the original alignment agent and the high temperature baking device are omitted, and no additional solvent is required, so that it is more environmentally friendly, energy-saving, and has a lower production cost.
  • the liquid crystal medium composition of the invention can realize vertical alignment under the non-PI alignment layer by simplifying the liquid crystal material, simplify the structure and process of the liquid crystal display panel, reduce energy consumption and pollution, reduce production cost, and further improve display effect. .

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Abstract

本发明提供一种液晶介质组合物，其包括：负性液晶材料；至少一种可在紫外光照射下发生聚合反应的可聚合单体；以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分通过连接基团与所述非极性部分连接。本发明的液晶介质组合物，通过对液晶材料进行改进，能够在非PI配向层下实现垂直配向。

Description

一种液晶介质组合物 【技术领域】
本发明涉及显示器技术领域，特别是涉及一种液晶介质组合物。
【背景技术】
目前主流市场上的TFT-LCD液晶显示器，可分为三大类，分别是扭曲向列TN(Twisted Nematic)、超扭曲向列STN(Twisted Nematic)，IPS(In-Plane Switching)平面转换及VA(Vertical Alignment)垂直排列型。其中VA型LCD相对其他种类的LCD具有极高的对比度，对比度一般可达到4000-8000，在大尺寸显示中具有非常广的应用。
VA型液晶显示器在不加电的暗态时，液晶分子垂直于基板表面排列，不产生任何相位差，漏光极低，暗态亮度很小，因而具有极高对比度。
为了使VA型液晶显示面板中的液晶分子能够垂直于基板表面排列，需要对液晶分子进行垂直配向处理。如图1所示，液晶显示面板包括第一基板10、第二基板20、液晶层30；第一基板10上设置有第一透明电极层11，第二基板20上设置有第二透明电极层21；在第一透明电极层11和第二透明电极层21的内侧 涂布垂直配向剂，配向剂一般包含大量的化学溶剂NMP(N-甲基吡咯烷酮)以及高分子材料聚酰亚胺(Polyimide，PI)等成分，然后将两个基板在高温下(一般200摄氏度以上)进行长时间烘烤，使配向剂中溶剂被烤干，从而在第一基板10和第二基板20内侧分别形成第一PI配向层12和第二PI配向层22。
PI制程中，需要采用喷墨印刷技术先向基板表面均匀喷涂PI液，然后静置一段时间待PI液在基板表面扩散流平，然后在较低温度(50-150度)进行段时间(1分钟-10分钟)预烘烤，使PI液中部分溶剂NMP(N-甲基吡咯烷酮)挥发排除，实现PI配向层初干，然后再在高温下(200-250度)进行长时间(30min-120min)烘烤，使其中几乎所有的溶剂NMP挥发，同时使PI液中聚酰胺酸的羧基及氨基充分环化反应形成聚酰亚胺。由此可见，PI配向层的制程能耗较高、且不环保、易对人体造成危害的过程；此外，由于配向层均匀性、缺涂、不粘以及等问题，还会影响产品良率造成，导致资源浪费，从而增加生产成本。
因此，有必要提供一种液晶介质组合物，以解决现有技术所存在的问题。
【发明内容】
本发明的目的在于提供一种液晶介质组合物，以解决现有技术的液晶显示面板采用PI配向层进行配向时，能耗较高以及成本较高的技术问题。
为解决上述技术问题，本发明构造了一种液晶介质组合物，其包括：
负性液晶材料；至少一种可在紫外光照射下发生聚合反应的可聚合单体；以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分通过连接基团与所述非极性部分连接；所述辅助配向剂具有如下通式之一的结构：
式一
Figure PCTCN2015085372-appb-000001
式二
Figure PCTCN2015085372-appb-000002
式三
Figure PCTCN2015085372-appb-000003
式四
Figure PCTCN2015085372-appb-000004
以上式一至式四中，L1代表位于所述非极性部分上的第一六元环结构、L2代表位于所述极性部分上的第二六元环结构、L3代表位于所述极性部分上的第三六元环结构、L4代表位于所述极性部分上的第四六元环结构；h为连接于所述非极性部分上的苯环或所述第一六元环结构上的第一取代基团，m为同一所述非极性部分的苯环或同一所述第一六元环结构上的第一取代基团的个数，m为0-4的整数；
T1为所述第一六元环结构上的第一尾端基团，其包含1-25个碳原子的分子链；所述第一尾端基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种；
a为连接于所述极性部分的苯环或所述第二六元环结构或所 述第三六元环结构或所述第四六元环结构上的第二取代基团，n为同一所述极性部分上的苯环或同一所述第二六元环结构或同一所述第三六元环结构或同一所述第四六元环结构上的第二取代基团的个数，n为0-4的整数，T2为所述极性部分上的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构的第二尾端基团，其包含1-25个碳原子的分子链；所述第二尾端基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基以及羰基中的至少一种；
X为所述连接基团，其为醚键或包含1-10个碳原子的分子链。
在本发明的液晶介质组合物中，所述第一六元环结构、所述第二六元环结构、所述第三六元环结构、所述第四六元环结构为苯环或者环己烷。
在本发明的液晶介质组合物中，所述连接基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
在本发明的液晶介质组合物中，所述第一取代基团选自F、Cl、Br、CN、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
在本发明的液晶介质组合物中，所述第二取代基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基、 羰基、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
在本发明的液晶介质组合物中，所述式一具体为以下结构：
式五
Figure PCTCN2015085372-appb-000005
在本发明的液晶介质组合物中，所述式二具体为以下结构：
式六
Figure PCTCN2015085372-appb-000006
在本发明的液晶介质组合物中，所述式三具体为以下结构：
式七
Figure PCTCN2015085372-appb-000007
为解决上述技术问题，本发明构造了一种液晶介质组合物，其包括：
负性液晶材料；至少一种可在紫外光照射下发生聚合反应的可聚合单体；以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分通过连接基团与所述非极性部分连接；所述辅助配向剂具有如下通式之一的结构：
式一
Figure PCTCN2015085372-appb-000008
式二
Figure PCTCN2015085372-appb-000009
式三
Figure PCTCN2015085372-appb-000010
式四
Figure PCTCN2015085372-appb-000011
以上式一至式四中，L1代表位于所述非极性部分上的第一六元环结构、L2代表位于所述极性部分上的第二六元环结构、L3代表位于所述极性部分上的第三六元环结构、L4代表位于所述极性部分上的第四六元环结构；h为连接于所述非极性部分上的苯环或所述第一六元环结构上的第一取代基团，m为同一所述非极性部分的苯环或同一所述第一六元环结构上的第一取代基 团的个数，m为0-4的整数；
T1为所述第一六元环结构上的第一尾端基团，其包含1-25个碳原子的分子链；
a为连接于所述极性部分的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构上的第二取代基团，n为同一所述极性部分上的苯环或同一所述第二六元环结构或同一所述第三六元环结构或同一所述第四六元环结构上的第二取代基团的个数，n为0-4的整数，T2为所述极性部分上的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构的第二尾端基团，其包含1-25个碳原子的分子链；
X为所述连接基团，其为醚键或包含1-10个碳原子的分子链。
在本发明的液晶介质组合物中，所述第一六元环结构、所述第二六元环结构、所述第三六元环结构、所述第四六元环结构为苯环或者环己烷。
在本发明的液晶介质组合物中，所述第一尾端基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
在本发明的液晶介质组合物中，所述第二尾端基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基以及羰基中的至少一种。
在本发明的液晶介质组合物中，所述连接基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
在本发明的液晶介质组合物中，所述第一取代基团选自F、Cl、Br、CN、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
在本发明的液晶介质组合物中，所述第二取代基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基、羰基、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
在本发明的液晶介质组合物中，所述式一具体为以下结构：
式五
Figure PCTCN2015085372-appb-000012
在本发明的液晶介质组合物中，所述式二具体为以下结构：
式六
Figure PCTCN2015085372-appb-000013
在本发明的液晶介质组合物中，所述式三具体为以下结构：
式七
Figure PCTCN2015085372-appb-000014
本发明的液晶介质组合物，通过对液晶材料进行改进，能够在非PI配向层下实现垂直配向，简化液晶显示面板的结构与制程，降低能耗与污染，同时降低生产成本，进一步提高显示效果。
【附图说明】
图1为现有技术的液晶显示面板的结构示意图。
图2为本发明液晶显示面板的结构示意图。
【具体实施方式】
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是以相同标号表示。
本发明提供一种液晶介质组合物，包括：负性液晶材料、至少一种可在紫外光照射下发生聚合反应的可聚合单体以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分(式一至四中横向的部分)通过连接基团与所述非极性部分(式一至四中竖直部分)连接；所述辅助配向剂具有如下通式之一的结构：
式一
Figure PCTCN2015085372-appb-000015
式二
Figure PCTCN2015085372-appb-000016
式三
Figure PCTCN2015085372-appb-000017
式四
Figure PCTCN2015085372-appb-000018
以上式一至式四中，L1代表位于所述非极性部分上的第一六元环结构、L2代表位于所述极性部分上的第二六元环结构、L3代表位于所述极性部分上的第三六元环结构、L4代表位于所述极性部分上的第四六元环结构；所述L1、L2、L3、L4可为苯环或者环己烷；h为连接于所述非极性部分上的苯环或所述第一六元环结构上的第一取代基团，m为同一所述非极性部分的苯环 或同一所述第一六元环结构上的第一取代基团的个数，m为0-4的整数；所述第一取代基团可选自F、Cl、Br、CN、1-10个碳原子的直链、1-10个碳原子的支链烷基中的至少一种。
T1为所述第一六元环结构上的第一尾端基团，其包含1-25个碳原子的分子链；所述第一尾端基团可选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-、-COCH2-中的一种。
a为连接于所述极性部分的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构上的第二取代基团，n为同一所述极性部分上的苯环或同一所述第二六元环结构或同一所述第三六元环结构或同一所述第四六元环结构上的第二取代基团的个数，n为0-4的整数，T2为所述极性部分上的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构上的第二尾端基团，其包含1-25个碳原子的分子链；所述第二尾端基团可选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基、羰基中的至少一种。所述第二取代基团可选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基、羰基、1-10个碳原子的直链、1-10个碳原子的支链烷基中的至少一种。
X为所述连接基团，其为醚键或包含1-10个碳原子的分子链。所述连接基团可选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-、-COCH2-中的一种。
所述极性部分中至少一个六元环结构上的取代基为极性基 团，所述非极性部分中的六元环结构上的取代基为非极性基团。
上述任一分子式中所述非极性部分中的各苯环或环己烷上的第一取代基团的个数可相同或者不同。上述任一分子式中所述极性部分中的各苯环或环己烷上的第二取代基团的个数可相同或者不同。
优选地，所述式一具体为以下结构：
式五
Figure PCTCN2015085372-appb-000019
所述式二具体为以下结构：
式六
Figure PCTCN2015085372-appb-000020
所述式三具体为以下结构：
式七
Figure PCTCN2015085372-appb-000021
所述式四可为以下结构：
式八
Figure PCTCN2015085372-appb-000022
如图2所示，图2为本发明液晶显示面板的结构示意图；本发明的液晶显示面板，包括第一基板10、第二基板20、液晶层30，第一基板10上设置有第一透明电极层11，第二基板20上设置有第二透明电极层21；在第一基板10和第二基板20内侧分别形成第一配向结构31和第二配向结构32。所述第一基板10可为阵列基板、所述第二基板20可为彩膜基板。
所述第一配向结构和第二配向结构是通过以下方式获得的：
在液晶中加入辅助配向剂后，由于辅助配向剂具有极性基团和非极性基团，其中极性基团与所述第一基板和第二基板反应，非极性基团与液晶分子反应，使得液晶分子在没有配向层的情况下也能相对于液晶显示面板的第一基板和第二基板的表面垂直排列。由于辅助配向剂直接与液晶混合一起使用，无需其他溶剂溶解，省去原本配向剂的涂布设备与高温烘烤设备，也无需额外溶剂，因此更加环保、节能，且生产成本较低。
本发明的液晶介质组合物，通过对液晶材料进行改进，能够在非PI配向层下实现垂直配向，简化液晶显示面板的结构与制程，降低能耗与污染，同时降低生产成本，进一步提高显示效果。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种液晶介质组合物，其包括：
    负性液晶材料；至少一种可在紫外光照射下发生聚合反应的可聚合单体；以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分通过连接基团与所述非极性部分连接；所述辅助配向剂具有如下通式之一的结构：
    Figure PCTCN2015085372-appb-100001
    Figure PCTCN2015085372-appb-100002
    以上式一至式四中，L1代表位于所述非极性部分上的第一六元环结构、L2代表位于所述极性部分上的第二六元环结构、L3代表位于所述极性部分上的第三六元环结构、L4代表位于所述极性部分上的第四六元环结构；h为连接于所述非极性部分上的苯环或所述第一六元环结构上的第一取代基团，m为同一所述非极性部分的苯环或同一所述第一六元环结构上的第一取代基团的个数，m为0-4的整数；
    T1为所述第一六元环结构上的第一尾端基团，其包含1-25个碳原子的分子链；所述第一尾端基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种；
    a为连接于所述极性部分的苯环或所述第二六元环结构或所 述第三六元环结构或所述第四六元环结构上的第二取代基团，n为同一所述极性部分上的苯环或同一所述第二六元环结构或同一所述第三六元环结构或同一所述第四六元环结构上的第二取代基团的个数，n为0-4的整数，T2为所述极性部分上的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构的第二尾端基团，其包含1-25个碳原子的分子链；所述第二尾端基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基以及羰基中的至少一种；
    X为所述连接基团，其为醚键或包含1-10个碳原子的分子链。
  2. 根据权利要求1所述的液晶介质组合物，其中所述第一六元环结构、所述第二六元环结构、所述第三六元环结构、所述第四六元环结构为苯环或者环己烷。
  3. 根据权利要求1所述的液晶介质组合物，其中所述连接基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
  4. 根据权利要求1所述的液晶介质组合物，其中所述第一取代基团选自F、Cl、Br、CN、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
  5. 根据权利要求1所述的液晶介质组合物，其中所述第二取代基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、 醚基、酯基、羰基、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
  6. 根据权利要求1所述的液晶介质组合物，其中所述式一具体为以下结构：
    Figure PCTCN2015085372-appb-100003
  7. 根据权利要求1所述的液晶介质组合物，其中所述式二具体为以下结构：
    Figure PCTCN2015085372-appb-100004
  8. 根据权利要求1所述的液晶介质组合物，其中所述式三具体为以下结构：
    Figure PCTCN2015085372-appb-100005
    Figure PCTCN2015085372-appb-100006
  9. 一种液晶介质组合物，其包括：
    负性液晶材料；至少一种可在紫外光照射下发生聚合反应的可聚合单体；以及至少一种辅助配向剂，所述辅助配向剂包括极性部分和非极性部分，所述极性部分通过连接基团与所述非极性部分连接；所述辅助配向剂具有如下通式之一的结构：
    Figure PCTCN2015085372-appb-100007
    Figure PCTCN2015085372-appb-100008
    以上式一至式四中，L1代表位于所述非极性部分上的第一六元环结构、L2代表位于所述极性部分上的第二六元环结构、L3代表位于所述极性部分上的第三六元环结构、L4代表位于所述极性部分上的第四六元环结构；h为连接于所述非极性部分上的苯环或所述第一六元环结构上的第一取代基团，m为同一所述非极性部分的苯环或同一所述第一六元环结构上的第一取代基团的个数，m为0-4的整数；
    T1为所述第一六元环结构上的第一尾端基团，其包含1-25个碳原子的分子链；
    a为连接于所述极性部分的苯环或所述第二六元环结构或所 述第三六元环结构或所述第四六元环结构上的第二取代基团，n为同一所述极性部分上的苯环或同一所述第二六元环结构或同一所述第三六元环结构或同一所述第四六元环结构上的第二取代基团的个数，n为0-4的整数，T2为所述极性部分上的苯环或所述第二六元环结构或所述第三六元环结构或所述第四六元环结构的第二尾端基团，其包含1-25个碳原子的分子链；
    X为所述连接基团，其为醚键或包含1-10个碳原子的分子链。
  10. 根据权利要求9所述的液晶介质组合物，其中所述第一六元环结构、所述第二六元环结构、所述第三六元环结构、所述第四六元环结构为苯环或者环己烷。
  11. 根据权利要求9所述的液晶介质组合物，其中所述第一尾端基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
  12. 根据权利要求9所述的液晶介质组合物，其中所述第二尾端基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基以及羰基中的至少一种。
  13. 根据权利要求9所述的液晶介质组合物，其中所述连接基团选自-O-、-COO-、-OCO-、-CH2O-、-OCH2O-、-O(CH2)2O-以及-COCH2-中的一种。
  14. 根据权利要求9所述的液晶介质组合物，其中所述第 一取代基团选自F、Cl、Br、CN、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
  15. 根据权利要求9所述的液晶介质组合物，其中所述第二取代基团选自F、Cl、Br、CN、羟基、伯胺基、仲胺基、叔胺基、醚基、酯基、羰基、1-10个碳原子的直链以及1-10个碳原子的支链烷基中的至少一种。
  16. 根据权利要求9所述的液晶介质组合物，其中所述式一具体为以下结构：
    Figure PCTCN2015085372-appb-100009
  17. 根据权利要求9所述的液晶介质组合物，其中所述式二具体为以下结构：
    Figure PCTCN2015085372-appb-100010
    Figure PCTCN2015085372-appb-100011
  18. 根据权利要求9所述的液晶介质组合物，其中所述式三具体为以下结构：
    Figure PCTCN2015085372-appb-100012
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