WO2018099071A1 - 取向材料组合物、液晶显示面板及其制备方法、显示装置 - Google Patents

取向材料组合物、液晶显示面板及其制备方法、显示装置 Download PDF

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WO2018099071A1
WO2018099071A1 PCT/CN2017/091184 CN2017091184W WO2018099071A1 WO 2018099071 A1 WO2018099071 A1 WO 2018099071A1 CN 2017091184 W CN2017091184 W CN 2017091184W WO 2018099071 A1 WO2018099071 A1 WO 2018099071A1
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Prior art keywords
substrate
liquid crystal
material composition
alignment material
crystal display
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PCT/CN2017/091184
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English (en)
French (fr)
Inventor
向西
姜妮
冯远明
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/748,397 priority Critical patent/US20190004376A1/en
Priority to EP17829911.1A priority patent/EP3550357B1/en
Publication of WO2018099071A1 publication Critical patent/WO2018099071A1/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
    • G02F1/133703—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by introducing organic surfactant additives into the liquid crystal material
    • 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 
    • G02F1/0102—Constructional details, not otherwise provided for in this subclass
    • G02F1/0107—Gaskets, spacers or sealing of cells; Filling and closing of cells
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • 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
    • G02F1/133784—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 rubbing

Definitions

  • Embodiments of the present disclosure relate to an alignment material composition, a liquid crystal display panel, a method of fabricating the same, and a display device.
  • the liquid crystal display panel is an important component of the liquid crystal display.
  • the current liquid crystal display panel includes an array substrate, a color film substrate disposed opposite to the array substrate, and a liquid crystal sealed between the array substrate and the color filter substrate.
  • the color filter substrate and the array substrate are usually bonded to each other by a sealant to form a liquid crystal cell.
  • the orientation of the liquid crystal molecules is usually achieved by using a uniform alignment layer, and the uniformity of orientation of the liquid crystal molecules directly affects the quality of the liquid crystal display.
  • the alignment layer is mainly treated by a rubbing alignment technique and a photo-alignment technique to orient liquid crystal molecules.
  • At least one embodiment of the present disclosure provides an alignment material composition, a liquid crystal display panel, a method of fabricating the same, and a display device.
  • the alignment material composition can not only form the alignment layer by the orientation process, but also effectively block the irradiation of the liquid crystal molecules by the ultraviolet light.
  • the alignment material composition is applied to the liquid crystal display panel, the liquid crystal display panel for different display area sizes is not required.
  • the corresponding ultraviolet mask is produced, thereby reducing the manufacturing cost of the liquid crystal display panel and simplifying the process of pre-curing the sealant.
  • At least one embodiment of the present disclosure provides an alignment material composition
  • an alignment material composition comprising: an organic solvent having a mass percentage of about 89 wt% to 94.9 wt%; an organic additive having a mass percentage of about 0.1 wt% to 1 wt%;
  • the polyimide resin is a percentage of about 5 wt% to 10 wt%; wherein the organic additive is an organic substance capable of absorbing ultraviolet light having a wavelength of about 290 nm to 400 nm.
  • the organic additive It is a benzotriazole compound represented by the following formula:
  • the organic additive is:
  • the organic additive has a mass percentage of about 0.5% by weight to 0.8% by weight.
  • the organic additive has a mass percentage of about 0.6% by weight.
  • the polyimide resin has a mass percentage of about 6 wt% to 8 wt%.
  • the organic solvent includes at least one of N-methyl-2-pyrrolidone, ⁇ -butyrolactone, and butyl cellosolve.
  • the organic solvent includes N-methyl-2-pyrrolidone, ⁇ -butyrolactone, and butyl cellosolve, the N-methyl-2-pyrrolidone
  • the mass percentage is about 15% by weight to 20% by weight
  • the mass percentage of the ⁇ -butyrolactone is about 60% by weight to 70% by weight
  • the mass percentage of the butyl cellosolve is about 10% by weight to 15% by weight.
  • At least one embodiment of the present disclosure further provides a liquid crystal display panel, including: a first substrate and a second substrate disposed opposite to each other, a liquid crystal between the first substrate and the second substrate, located on the first substrate And an alignment layer on a surface of the liquid crystal side of at least one of the second substrates, wherein the alignment layer is formed of any of the alignment material compositions described above.
  • the alignment layer is a layered structure, and the organic additive is located in a layer structure of the alignment layer away from the liquid crystal to allow ultraviolet light to be performed. absorb.
  • the polyimide resin is located in a layer structure of the alignment layer close to the liquid crystal to orient the liquid crystal.
  • the first substrate is an array substrate
  • the second substrate is a color film substrate
  • At least one embodiment of the present disclosure also provides a display device including any of the above liquid crystal display panels.
  • At least one embodiment of the present disclosure further provides a method of fabricating a liquid crystal display panel, comprising: providing a first substrate and a second substrate; and coating a surface on at least one of the first substrate and the second substrate Any of the above alignment material compositions, the applied alignment material composition is subjected to a rubbing process to form an alignment layer; and a sealant is applied on at least one of the first substrate and the second substrate; Applying liquid crystal to at least one of the first substrate and the second substrate; pairing the first substrate and the second substrate; and curing the sealant.
  • the curing treatment of the sealant comprises an ultraviolet pre-curing treatment and a heating main curing treatment.
  • the first substrate and the second substrate are respectively a color film substrate and an array substrate, and at least one of the first substrate and the second substrate A color film pattern and an array pattern are respectively formed on the first substrate and the second substrate before the surface of the alignment material composition is coated.
  • FIG. 1 is a process diagram of a preparation process of a liquid crystal display panel
  • FIG. 2 is a schematic cross-sectional structural view of a liquid crystal display panel according to an embodiment of the present disclosure
  • FIG. 3 is a flow chart of a process for preparing a liquid crystal display panel according to an embodiment of the present disclosure
  • FIG. 4 is a diagram of a process of preparing a liquid crystal display panel according to an embodiment of the present disclosure.
  • FIG. 1 is a process diagram for preparing a liquid crystal display panel.
  • a process of fabricating a liquid crystal display panel is performed on a first substrate (for example, a substrate on the lower side in FIG. 1 ) and a second substrate ( For example, an array structure and a color film structure are respectively formed on the substrate on the upper side in FIG.
  • an alignment material is respectively coated on the first substrate and the second substrate, and the alignment material is subjected to a rubbing process to form an alignment layer, thereby enabling subsequent
  • the liquid crystal molecules are regularly arranged and oriented; the liquid crystal is dropped on the first substrate, the sealant is coated on the second substrate, and then the first substrate and the second substrate are vacuum-packed, and the sealant is subjected to ultraviolet light pre-prevention.
  • the curing treatment and the heating main curing treatment are blocked by the mask when performing the external light pre-curing treatment; the cutting is performed along the liquid crystal display panel mother board to obtain a single liquid crystal display panel.
  • the pre-curing treatment of the sealant is mostly carried out by ultraviolet light.
  • the liquid crystal in the display area is usually destroyed. Therefore, a plating is usually required in the process.
  • a metal mask is used to block the display area of the liquid crystal display panel.
  • the display areas of different liquid crystal display panels are different in size, and corresponding mask plates are required for different liquid crystal display panels. This increases the production cost of the liquid crystal display panel and complicates the process.
  • liquid crystal display panel for vehicles has attracted more and more attention.
  • the liquid crystal display panel for automotive use has to be used outdoors for a long time, and its long-term exposure to ultraviolet light is likely to cause yellowing of the periphery of the display panel, which causes a problem of poor display. Further improving the ability of the liquid crystal display panel to resist ultraviolet light irradiation.
  • a metal-coated mask is usually used to block the display area. Since the display areas of different liquid crystal display panels are different in size, For different liquid crystal display panels, a corresponding mask is required, so the manufacturer needs a plurality of different masks, thereby increasing the production cost and complicating the process.
  • embodiments of the present disclosure provide an alignment material composition and a liquid crystal display panel including the alignment layer formed from the alignment material composition.
  • the alignment material composition comprises: an organic solvent having a mass percentage of about 89 wt% to 94.9 wt%; an organic additive having a mass percentage of about 0.1 wt% to 1 wt%; and a mass percentage of about 5 wt% to 10 wt%; % of a polyimide resin; the organic additive is an organic substance capable of absorbing ultraviolet light having a wavelength of about 290 nm to 400 nm.
  • the alignment material composition can not only form an alignment layer by an alignment process, but also effectively block ultraviolet light from illuminating liquid crystal molecules by absorbing ultraviolet light.
  • the liquid crystal display panel of different display area sizes does not need to be fabricated with a corresponding ultraviolet mask, thereby reducing the production cost of the liquid crystal display panel and simplifying the frame sealing.
  • the process steps of the pre-curing treatment of the glue improve the ability of the liquid crystal display panel to resist ultraviolet light irradiation and improve the quality of the product.
  • An embodiment of the present disclosure provides an alignment material composition comprising: an organic solvent having a mass percentage of about 89 wt% to 94.9 wt%, and an organic content of about 0.1 wt% to 1 wt% by mass.
  • the additive is a polyimide resin having a mass percentage of about 5 wt% to 10 wt%, and the organic additive is an organic substance capable of absorbing ultraviolet light having a wavelength of about 290 nm to 400 nm.
  • the organic solvent in the embodiment of the present disclosure includes at least one of N-methyl-2-pyrrolidone, ⁇ -butyrolactone, and butyl cellosolve.
  • the organic solvent may be one or more of N-methyl-2-pyrrolidone, ⁇ -butyrolactone, and butyl cellosolve, and the following description will be made by taking an organic solvent together with the above three examples.
  • the mass percentage of N-methyl-2-pyrrolidone in the formed alignment material composition is about 15% by weight to 20% by weight, and the mass percentage of ⁇ -butyrolactone is about 60% by weight to 70%.
  • the wt%, butyl cellosolve has a mass percentage of about 10% by weight to 15% by weight.
  • N-methyl-2-pyrrolidone is a solvent for dissolving polyimide
  • butyl cellosolve is a solvent for ensuring fluidity of the alignment material composition
  • r-butyrolactone ensures linearity of the edge of the alignment material composition
  • N-methyl-2-pyrrolidone, ⁇ -butyrolactone, and butyl cellosolve are all high-boiling organic solvents.
  • N-methyl-2-pyrrolidone has a boiling point of 203 ° C
  • ⁇ -butyrolactone has a boiling point of 204 ° C
  • butyl cellosolve has a boiling point of 171.7 ° C.
  • the alignment material composition is prepared by dissolving a polyimide resin having a mass percentage of about 5 wt% to 10 wt% in an amount of about 15 wt% to 20 wt% of N-methyl-2.
  • a polyimide resin having a mass percentage of about 5 wt% to 10 wt% in an amount of about 15 wt% to 20 wt% of N-methyl-2.
  • - pyrrolidone, ⁇ -butyrolactone in an amount of about 60% by weight to 70% by weight
  • butyl cellosolve ethylene glycol butyl ether
  • the organic additive is added in an amount of about 0.1% by weight to 1% by weight, and is sufficiently stirred until the components are uniformly mixed, whereby an alignment material composition is obtained.
  • a polyimide resin having a mass percentage of about 6 wt% is dissolved in N-methyl-2-pyrrolidone having a mass percentage of about 16% by weight, and ⁇ -butane having a mass percentage of about 65 wt%.
  • the ester and the butyl cellosolve (ethylene glycol butyl ether) having a mass percentage of about 12% by weight are uniformly stirred, and then an organic additive having a mass percentage of about 1% by weight is added, and the mixture is thoroughly stirred until the components are uniformly mixed. This produced an alignment material composition.
  • Polyimide Resin is a polyimide resin commonly used in the production of oriented material compositions in the art.
  • the organic additive can absorb the energy of the ultraviolet light, then store the absorbed energy, and finally convert it into heat that is not polluted by the environment, and the organic additive absorbs almost no visible light, so it does not stain or Affect the quality of the alignment layer.
  • the organic additive has a special molecular structure in which intramolecular hydrogen bonds are present, and in the normal state, intramolecular hydrogen bonds in the organic additive are closed, when there is ultraviolet light having a wavelength of about 290 nm to 400 nm.
  • the organic additive absorbs the energy of the ultraviolet light, the intramolecular hydrogen bond is opened, and then released in the form of thermal energy, and the organic additive returns to a stable state to continue the absorption of the next ultraviolet light energy.
  • the organic additive Corresponding to the organic additive itself absorbing the energy of the external ultraviolet light, so that the alignment material composition and other substances in the liquid crystal layer are protected from the ultraviolet light energy and interference, thereby preventing the ultraviolet light from damaging the liquid crystal and the alignment layer. .
  • the organic additive has good thermal stability, chemical stability, photostability and miscibility, and the organic additive is not easily reacted with other components and is not easily affected by the subsequent liquid crystal panel manufacturing process.
  • the organic additive is a benzotriazole compound represented by the following formula:
  • X is a hydrogen atom or a halogen atom, for example, X is H, F, Cl, Br or I; R1 is an H or C 4 -C 12 alkyl isomer, and R 2 is CH 3 or C 4 - C 8 Alkyl isomers.
  • an intramolecular hydrogen bond exists between a hydrogen atom of a hydroxyl group on the benzene ring of the benzotriazole compound and a nitrogen atom on the triazole ring, thus forming a stable six-membered ring.
  • the benzotriazole compound absorbs ultraviolet light
  • the intramolecular hydrogen bond formed between the hydrogen atom of the hydroxyl group on the benzene ring and the nitrogen atom on the triazole ring is broken, intramolecular proton transfer occurs, and proton transfer to the nitrogen atom
  • the tautomers are formed on top. However, the resulting tautomer is less stable, so that excess energy can be released as heat energy and returned to a stable ground state.
  • the chemical formula of the organic additive is:
  • the organic additive may have a mass percentage of about 0.5% by weight to 0.8% by weight.
  • the organic additive may have a mass percentage of 0.5% by weight, 0.6% by weight, 0.7% by weight, and 0.8% by weight.
  • organic substances having an ultraviolet absorbing effect generally include salicylates, benzophenones, benzotriazoles, and triazines.
  • salicylates mainly absorb ultraviolet rays having a wavelength of about 280 nm to 310 nm, and salicylates have a low melting point and are easily sublimed;
  • benzophenones mainly absorb ultraviolet rays having a wavelength of about 280 nm to 320 nm, and
  • the benzophenones have poor heat resistance, and the benzophenones are easily exposed to ultraviolet light for a long time; for example, triazines can absorb a part of visible light and are prone to yellowing problems.
  • the benzotriazole compound used in the examples of the present disclosure has high melting point, good stability, high absorption efficiency to ultraviolet light, little absorption in the visible light region, and addition of a benzotriazole compound to the alignment material composition. It does not substantially color and has good compatibility with the polymer in the alignment material composition and high stability.
  • the benzotriazole compound was selected in view of the fact that the alignment material composition involved a high temperature treatment process in subsequent applications, and the alignment material required to be transparent and colorless.
  • the mass percentage of the polyimide resin is about 6 wt% to 8 wt%, and for example, the mass percentage of the polyimide resin is 6 wt%, 7 wt%, and 8 wt%.
  • the effect of detecting the orientation material composition after adding the organic additive to the alignment material composition is determined by detecting the afterimage level.
  • the mass percentage of the organic additive is 0 wt%, 0.4 wt%, 0.6 wt%, and 0.8 wt%, respectively, the corresponding afterimage level is 3 in the absence of a mask. 1, 0 and 1.
  • FIG. 2 is a schematic cross-sectional view of a liquid crystal display panel according to an embodiment of the present disclosure.
  • the liquid crystal display panel includes: a first substrate 10 and a second substrate 11 disposed opposite to each other, and is located on the first substrate 10 and the second substrate.
  • the liquid crystal 12 between 11 is located on the alignment layer 13 on the liquid crystal side surface of at least one of the first substrate 10 and the second substrate 11, and the alignment layer 13 is formed of the alignment material composition in the first embodiment.
  • the first substrate 10 and the second substrate 11 are bonded to each other, for example, by a sealant 14 to form a liquid crystal cell.
  • the alignment layer 13 may be formed in a layered structure in which an organic additive is located in a layer structure of the alignment layer 13 away from the liquid crystal 12 to absorb ultraviolet light.
  • a polyimide resin is located in the layer structure of the alignment layer 13 close to the liquid crystal to orient the liquid crystal 12.
  • the liquid crystal 12 is a cholesteric liquid crystal, a nematic liquid crystal, or a smectic liquid crystal, as needed.
  • the first substrate 10 is a color film substrate, including a color film structure (eg, a color film unit, a black matrix, etc.), and the second substrate 11 is an array substrate, including an array structure (eg, a gate line, a data line, a thin film transistor, a pixel electrode) Wait).
  • a color film structure eg, a color film unit, a black matrix, etc.
  • the second substrate 11 is an array substrate, including an array structure (eg, a gate line, a data line, a thin film transistor, a pixel electrode) Wait).
  • the liquid crystal display panel further includes a main spacer 15 and an auxiliary spacer 16 between the first substrate 10 and the second substrate 11 to support both.
  • the height of the auxiliary spacer 16 is lower than the height of the main spacer 15.
  • the main spacer 15 plays a supporting role, and when the liquid crystal box is subjected to external pressing force, the auxiliary spacer is too large.
  • the auxiliary spacer 16 can serve as a support.
  • An embodiment of the present disclosure further provides a display device including the display panel described above.
  • Other structures in the display device can be found in conventional designs.
  • the display device can be, for example, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like, or any product or component having a display function.
  • FIG. 3 is a flowchart of a method for fabricating a liquid crystal display panel, the method of manufacturing comprising: providing a first substrate and a second substrate, on the first substrate and Coating a layer of the alignment material composition of the first embodiment on at least one surface of the second substrate, and subjecting the coated alignment material composition to a rubbing process to form an alignment layer; at least the first substrate and the second substrate Applying a sealant on one of the first substrate and the second substrate; applying a liquid crystal on at least one of the first substrate and the second substrate; and curing the sealant on the first substrate and the second substrate;
  • the process of forming the film of the alignment material composition comprises: applying the alignment material composition to the surface of at least one of the first substrate and the second substrate, pre-curing at about 60 ° C to 100 ° C to remove part of the organic solvent, and then The main curing is carried out at a temperature of about 200 ° C to 230 ° C, and then the alignment material composition is subjected to a rubbing treatment to form an alignment layer.
  • liquid crystal may be first applied on the second substrate, and then the first substrate and the second substrate of the case may be formed to form a liquid crystal cell, or the first substrate and the second substrate may be paired first, and then The liquid crystal is poured into the liquid crystal cell.
  • curing the sealant includes first performing an ultraviolet pre-curing treatment and then performing a heating main curing treatment.
  • the sealant is irradiated with ultraviolet light having a wavelength of about 290 nm to 400 nm to pre-cure it.
  • the heating main curing process may employ resistance wire heating, infrared heating, or the like.
  • the alignment material composition on at least one of the first substrate and the second substrate, further comprising forming a color film on the first substrate (eg, the color filter substrate) and the second substrate (eg, the array substrate) Structure and array structure.
  • FIG. 4 is a process diagram of a preparation process of a liquid crystal display panel according to an embodiment of the present disclosure, including the following steps:
  • step I a first substrate (for example, a color filter substrate) and a second substrate (for example, an array substrate) are provided, and a color film structure and an array structure are respectively formed on the first substrate and the second substrate.
  • a first substrate for example, a color filter substrate
  • a second substrate for example, an array substrate
  • Step II coating the alignment material composition of the first embodiment on the surfaces of the first substrate and the second substrate, respectively.
  • Step III performing a rubbing process on the alignment material composition coated on the surfaces of the first substrate and the second substrate to form an alignment layer.
  • Step IV applying a sealant on the first substrate, and applying liquid crystal on the second substrate.
  • Step V The first substrate and the second substrate of the box are formed to form a liquid crystal cell, and the frame sealant is irradiated with ultraviolet light to perform pre-curing treatment.
  • the application of the mask is omitted in the step IV of the embodiment of the present disclosure, thereby reducing the manufacturing cost of the liquid crystal display panel, simplifying the process steps of the pre-curing of the sealant, and improving the process step.
  • the ability of the liquid crystal display panel to resist ultraviolet light illumination improves the quality of the product.
  • the sealant is subjected to a heating main curing treatment.
  • Embodiments of the present disclosure provide an alignment material composition, a liquid crystal display panel, a preparation method thereof, and a display device, which have at least one of the following effects: the alignment material composition can not only form an alignment layer by an alignment process, but also effectively block Irradiation of liquid crystal molecules by ultraviolet light.
  • the alignment material composition can not only form an alignment layer by an alignment process, but also effectively block Irradiation of liquid crystal molecules by ultraviolet light.
  • a liquid crystal display panel having a different display area size does not need to be formed with a corresponding ultraviolet mask, thereby reducing the manufacturing cost of the liquid crystal display panel and simplifying the process of pre-curing the sealant.
  • the step improves the ability of the liquid crystal display panel to resist ultraviolet light irradiation and improves the quality of the product.

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Abstract

一种取向材料组合物、液晶显示面板及其制备方法、显示装置。该取向材料组合物包括：质量百分含量大约为89wt％～94.9wt％的有机溶剂；质量百分含量大约为0.1wt％～1wt％的有机添加物；质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂；所述有机添加物为能够吸收波长大约为290nm～400nm的紫外光线的有机物。该取向材料组合物不仅能通过取向工艺形成取向层，还能有效阻挡紫外光线对液晶分子的照射，将其应用于液晶显示面板时，针对不同显示区域大小的液晶显示面板不需要制作相应的紫外光线掩膜板，从而降低了液晶显示面板的制作成本，简化了封框胶预固化的工艺过程，提高了液晶显示面板抵抗紫外光线照射的能力，提高了产品的品质。

Description

取向材料组合物、液晶显示面板及其制备方法、显示装置 技术领域
本公开的实施例涉及一种取向材料组合物、液晶显示面板及其制备方法、显示装置。
背景技术
液晶显示器(Liquid Crystal Display，LCD)因其体积小、功耗低、无辐射等特点已成为平板显示器中的主流产品。液晶显示面板是液晶显示器的重要组成部件，目前的液晶显示面板包括阵列基板、与阵列基板相对设置的彩膜基板以及密封在阵列基板和彩膜基板之间的液晶。彩膜基板和阵列基板通常通过密封胶彼此结合在一起以形成液晶盒。
在制作液晶显示面板的过程中，通常利用均一的取向层实现对液晶分子的定向，而液晶分子定向的均一性直接影响着液晶显示器的品质。目前主要采用摩擦取向技术和光控取向技术对取向层加以处理以对液晶分子进行取向。
发明内容
本公开至少一实施例提供一种取向材料组合物、液晶显示面板及其制备方法以及显示装置。该取向材料组合物不仅能通过取向工艺形成取向层，还能有效阻挡紫外光线对液晶分子的照射，将该取向材料组合物应用于液晶显示面板时，针对不同显示区域大小的液晶显示面板不需要制作相应的紫外光掩膜板，从而降低了液晶显示面板的制作成本，简化了封框胶预固化的工艺过程。
本公开至少一实施例提供一种取向材料组合物，包括：质量百分含量大约为89wt％～94.9wt％的有机溶剂；质量百分含量大约为0.1wt％～1wt％的有机添加物；质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂；其中，所述有机添加物为能够吸收波长大约为290nm～400nm的紫外光线的有机物。
例如，在本公开的实施例提供的取向材料组合物中，所述有机添加物 为由以下通式表示的苯并三唑类化合物：
Figure PCTCN2017091184-appb-000001
其中，X为H、F、Cl、Br或I；R1为H或C4-C12烷基异构体，R2为CH3或C4-C8烷基异构体。
例如，在本公开的实施例提供的取向材料组合物中，所述有机添加物为：
Figure PCTCN2017091184-appb-000002
例如，在本公开的实施例提供的取向材料组合物中，所述有机添加物的质量百分含量大约为0.5wt％～0.8wt％。
例如，在本公开的实施例提供的取向材料组合物中，所述有机添加物的质量百分含量大约为0.6wt％。
例如，在本公开的实施例提供的取向材料组合物中，所述聚酰亚胺树脂的质量百分含量大约为6wt％～8wt％。
例如，在本公开的实施例提供的取向材料组合物中，所述有机溶剂包括N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂中的至少之一。
例如，在本公开的实施例提供的取向材料组合物中，所述有机溶剂包括N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂，所述N-甲基-2-吡咯烷酮的质量百分含量大约为15wt％～20wt％；所述γ-丁内酯的质量百分含量大约为60wt％～70wt％；所述丁基溶纤剂的质量百分含量大约为10wt％～15wt％。
本公开至少一实施例还提供一种液晶显示面板，包括：相对设置的第一基板和第二基板，位于所述第一基板和所述第二基板之间的液晶，位于所述第一基板和所述第二基板至少之一的靠近所述液晶一侧表面上的取向层，其中，所述取向层由上述任一取向材料组合物形成。
例如，在本公开的实施例提供的液晶显示面板中，所述取向层为分层结构，所述有机添加物位于所述取向层的远离所述液晶的层结构中，以可对紫外光线进行吸收。
例如，在本公开的实施例提供的液晶显示面板中，所述聚酰亚胺树脂位于所述取向层的靠近所述液晶的层结构中，以对所述液晶进行取向。
例如，在本公开的实施例提供的液晶显示面板中，所述第一基板为阵列基板，所述第二基板为彩膜基板。
本公开至少一实施例还提供一种显示装置，包括上述任一液晶显示面板。
本公开至少一实施例还提供一种液晶显示面板的制备方法，包括：提供第一基板和第二基板；在所述第一基板和所述第二基板至少之一的表面上涂覆一层上述任一的取向材料组合物，对涂覆的所述取向材料组合物进行摩擦工艺处理以形成取向层；在所述第一基板和所述第二基板至少之一上施加封框胶；在所述第一基板和所述第二基板至少之一上施加液晶；对盒所述第一基板和所述第二基板；对所述封框胶进行固化处理。
例如，在本公开的实施例提供的制备方法中，对所述封框胶进行固化处理包括紫外光预固化处理和加热主固化处理。
例如，在本公开的实施例提供的制备方法中，所述第一基板和所述第二基板分别为彩膜基板和阵列基板，在所述第一基板和所述第二基板至少之一的表面上涂覆所述取向材料组合物之前，在所述第一基板和所述第二基板上分别形成彩膜图案和阵列图案。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为一种液晶显示面板的制备过程图；
图2为本公开一实施例提供的一种液晶显示面板的截面结构示意图；
图3为本公开一实施例提供的一种液晶显示面板的制备过程流程图；以及
图4为本公开一实施例提供的一种液晶显示面板的制备过程图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。
例如，图1为一种液晶显示面板的制备过程图，如图1所示，目前，制作液晶显示面板的过程为，在第一基板(例如图1中下侧的基板)和第二基板(例如图1中上侧的基板)上分别形成阵列结构和彩膜结构，在第一基板和第二基板上分别涂覆取向材料，对取向材料经过摩擦工艺处理以形成取向层，从而可以使后续液晶分子规则排列并取向；在第一基板上滴加液晶，在第二基板上涂布封框胶，接着将第一基板和第二基板进行真空对盒，并且对封框胶进行紫外光预固化处理和加热主固化处理，在进行外光预固化处理时，用掩膜板遮挡；沿液晶显示面板母板进行切割，得到单个液晶显示面板。封框胶的预固化处理大都采用紫外光线进行照射的方式，但是采用紫外光线照射对封框胶进行预固化处理时通常会破坏显示区的液晶，因此，在此过程中通常需要采用一张镀有金属的掩膜板来遮挡液晶显示面板的显示区域。不同的液晶显示面板显示区域的大小不同，针对不同的液晶显示面板都需要制作相应的掩膜板。这样提高了液晶显示面板的生产成本，使工艺过程变得复杂化。
除此之外，车载用液晶显示面板越来越受到关注，车载用液晶显示面板要长期在户外使用，其长期受紫外光照射容易出现显示面板周边泛黄，从而出现显示不良的问题，因此需要进一步提高液晶显示面板抵抗紫外光线照射的能力。
如上所述，在采用紫外光照射的方式对封框胶进行预固化的过程中通常需要采用一张镀有金属的掩膜板来遮挡显示区域，由于不同的液晶显示面板显示区域的大小不同，针对不同的液晶显示面板都需要制作相应的掩膜板，因此制造商就需要多张不同的掩膜板，从而提高了生产成本，使工艺过程变得复杂化。针对该问题，本公开的实施例提供了一种取向材料组合物以及包括由该取向材料组合物形成取向层的液晶显示面板。该取向材料组合物包括：质量百分含量大约为89wt％～94.9wt％的有机溶剂；质量百分含量大约为0.1wt％～1wt％的有机添加物；质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂；该有机添加物为能够吸收波长大约为290nm～400nm的紫外光线的有机物。
例如，该取向材料组合物不仅能通过取向工艺形成取向层，还能通过吸收紫外光线从而有效阻挡紫外光线对液晶分子的照射。这样，将该取向材料组合物应用于液晶显示面板时，针对不同显示区域大小的液晶显示面板不需要再制作相应的紫外光掩膜板，从而降低了液晶显示面板的生产成本，简化了封框胶预固化处理的工艺步骤，提高了液晶显示面板抵抗紫外光线照射的能力，提高了产品的品质。
本公开一实施例提供一种取向材料组合物，该取向材料组合物包括：质量百分含量大约为89wt％～94.9wt％的有机溶剂，质量百分含量大约为0.1wt％～1wt％的有机添加物，质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂，有机添加物为能够吸收波长大约为290nm～400nm的紫外光线的有机物。
例如，本公开的实施例中的有机溶剂包括N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂中的至少之一。该有机溶剂可以为N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂中的一种或者多种，以下以有机溶剂同时包含上述三种为例加以说明。
例如，在形成的取向材料组合物中N-甲基-2-吡咯烷酮的质量百分含量大约为15wt％～20wt％，γ-丁内酯的质量百分含量大约为60wt％～70 wt％，丁基溶纤剂的质量百分含量大约为10wt％～15wt％。
例如，N-甲基-2-吡咯烷酮是溶解聚酰亚胺的溶剂、丁基溶纤剂是确保取向材料组合物具有流动性的溶剂、r-丁内酯保证取向材料组合物边缘的线性度。
N-甲基-2-吡咯烷酮、γ-丁内酯以及丁基溶纤剂均为高沸点有机溶剂。例如，N-甲基-2-吡咯烷酮的沸点为203℃，γ-丁内酯的沸点为204℃，丁基溶纤剂的沸点为171.7℃。
例如，该取向材料组合物的制备方法为：将质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂溶于质量百分含量大约为15wt％～20wt％的N-甲基-2-吡咯烷酮、质量百分含量大约为60wt％～70wt％的γ-丁内酯以及质量百分含量大约为10wt％～15wt％的丁基溶纤剂(乙二醇丁醚)中，搅拌均匀后加入质量百分含量大约为0.1wt％～1wt％的有机添加物，充分搅拌至各组分混合均匀，由此制得取向材料组合物。
例如，将质量百分含量大约为6wt％的聚酰亚胺树脂溶于质量百分含量大约为16wt％的N-甲基-2-吡咯烷酮、质量百分含量大约为65wt％的γ-丁内酯以及质量百分含量大约为12wt％的丁基溶纤剂(乙二醇丁醚)中，搅拌均匀后加入质量百分含量大约为1wt％的有机添加物，充分搅拌至各组分混合均匀，由此制得取向材料组合物。
例如，聚酰亚胺树脂(Polyimide Resin)为本领域中制作取向材料组合物常用的聚酰亚胺树脂。
例如，该有机添加物可以吸收紫外光线的能量，然后将吸收的能量储存，最后转化为对环境没有污染的热能释放出去，该有机添加物几乎不吸收任何的可见光，因此不会着色，不会影响取向层的质量。
例如，该有机添加物具有特殊的分子结构，该结构中存在着分子内氢键，在通常状态下该有机添加物中的分子内氢键是闭合的，当有波长大约为290nm～400nm的紫外光线照射时，该有机添加物会吸收紫外光线的能量，分子内氢键被打开，之后再以热能的形式释放出去，该有机添加物又回复到稳定的状态继续下一次紫外光能量的吸收。相当于该有机添加物自身吸收了外界紫外光的能量，使得取向材料组合物和液晶层中的其他物质免于受到紫外光能量的照射和干扰，从而防止了紫外光线对液晶以及取向层造成破坏。
该有机添加物具有良好的热稳定性、化学稳定性、光稳定性和混溶性，该有机添加物不易与其他成分进行反应，并且不易受到后续液晶面板制造过程的影响。
例如，该有机添加物为由以下通式表示的苯并三唑类化合物：
Figure PCTCN2017091184-appb-000003
其中，X为氢原子、卤素原子，例如，X为H、F、Cl、Br或I；R1为H或C4-C12烷基异构体，R2为CH3或C4-C8烷基异构体。
例如，该苯并三唑类化合物苯环上羟基的氢原子与三唑环上的氮原子之间存在分子内氢键，这样就形成了一个稳定的六元环。当该苯并三唑类化合物吸收紫外光后，苯环上羟基的氢原子与三唑环上的氮原子之间形成的分子内氢键断开，发生分子内质子转移，质子转移到氮原子上而形成互变异构体。但生成的互变异构体的稳定性较差，这样可以将多余的能量以热能等形式释放出去，从而回到稳定的基态。
例如，当波长大约为290nm～400nm的紫外光照射至苯并三唑类化合物时，苯并三唑类化合物发生了如下反应：
Figure PCTCN2017091184-appb-000004
其中，X为H、F、Cl、Br或I；R1为H或C4-C12烷基异构体，R2为CH3或C4-C8烷基异构体。
例如，该有机添加物的化学式为：
Figure PCTCN2017091184-appb-000005
例如，该有机添加物的质量百分含量大约为0.5wt％～0.8wt％，例如，该有机添加物的质量百分含量可以为0.5wt％，0.6wt％，0.7wt％以及0.8wt％。
例如，具有紫外吸收效果的有机物，一般包括：水杨酸酯类、二苯甲酮类、苯并三唑类、三嗪类。例如，水杨酸酯类主要吸收波长大约为280nm～310nm的紫外线，且水杨酸酯类的熔点低，易升华；例如，二苯甲酮类主要吸收波长大约为280nm～320nm的紫外线，且二苯甲酮类的耐热性能差，二苯甲酮类长时间接收紫外的照射易泛黄；例如，三嗪类能够吸收一部分的可见光，且容易出现泛黄的问题。
本公开的实施例中采用的苯并三唑类化合物，熔点高、稳定性好，对紫外光线的吸收效率高，在可见光区几乎没有吸收，将苯并三唑类化合物添加到取向材料组合物中基本不会着色，并且与取向材料组合物中的聚合物的相溶性好、稳定性高。考虑到取向材料组合物在后续的应用中涉及到高温处理工艺，并且取向材料要求透明无色，所以选择了苯并三唑类化合物。
例如，聚酰亚胺树脂的质量百分含量大约为6wt％～8wt％，例如，该聚酰亚胺树脂的质量百分含量为6wt％，7wt％以及8wt％。
例如，液晶分子直接受到紫外光照射时可能会被破坏，从而导致残像严重，残像等级越高，说明对液晶分子的破坏越严重。例如，在本公开的实施例中，在取向材料组合物中添加有机添加物后检测取向材料组合物的效果的是通过检测残像水平来判定的。
表一：
Figure PCTCN2017091184-appb-000006
例如，如表一所示，有机添加物的质量百分含量分别为0wt％，0.4wt％，0.6wt％以及0.8wt％时，在没有掩膜板的条件下，对应的残像等级依次为3、1、0以及1。
本公开一实施例提供一种液晶显示面板。例如，图2为本公开的实施例提供的一种液晶显示面板的截面结构示意图，该液晶显示面板包括：相对设置的第一基板10和第二基板11，位于第一基板10和第二基板11之间的液晶12，位于第一基板10和第二基板11至少之一的靠近液晶一侧表面上的取向层13，该取向层13由实施例一中的取向材料组合物形成。该第一基板10和第二基板11例如通过封框胶14彼此结合在一起以形成液晶盒。
例如，该取向层13可以形成为分层结构，有机添加物位于取向层13的远离液晶12的层结构中，以对紫外光进行吸收。
例如，聚酰亚胺树脂位于取向层13的靠近液晶的层结构中，以对液晶12进行取向。
例如，根据需要，该液晶12为胆甾相液晶、向列相液晶或近晶相液晶。
例如，第一基板10为彩膜基板，包括彩膜结构(例如彩膜单元、黑矩阵等)，第二基板11为阵列基板，包括阵列结构(例如栅线、数据线、薄膜晶体管、像素电极等)。
例如，该液晶显示面板还包括位于第一基板10和第二基板11之间以支撑二者的主隔垫物15以及辅助隔垫物16。辅助隔垫物16的高度低于主隔垫物15的高度，在通常情况下，主隔垫物15起到支撑作用，当液晶盒受到外界的挤压作用力太大以至于辅助隔垫物16抵靠在与之相对的基板上时，辅助隔垫物16即可以起到支撑的作用。
本公开一实施例还提供一种显示装置，包括上述中的显示面板。显示装置中的其他结构可参见常规设计。该显示装置例如可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本公开的实施例还提供一种液晶显示面板的制备方法，例如，图3为液晶显示面板的制备方法的流程图，该制备方法包括：提供第一基板和第二基板，在第一基板和第二基板至少之一的表面上涂覆一层实施例一中的取向材料组合物，对涂覆的取向材料组合物进行摩擦工艺处理以形成取向层；在第一基板和第二基板至少之一上施加封框胶；在第一基板和第二基板至少之一上施加液晶；对盒第一基板和第二基板；对封框胶进行固化处理。
例如，取向材料组合物成膜的过程包括：将取向材料组合物涂覆到第一基板和第二基板至少之一的表面，先经过大约60℃～100℃预固化除去部分有机溶剂，再在大约200℃～230℃的条件下主固化，然后对取向材料组合物进行摩擦工艺处理以形成取向层。
例如，在上述制备方法中，可以先在第二基板上施加液晶，然后再对盒第一基板和第二基板以形成液晶盒，也可以先对盒第一基板和第二基板，然后再将液晶灌注到液晶盒中。
例如，对封框胶进行固化处理包括先进行紫外光预固化处理和然后进行加热主固化处理。例如，采用波长大约为290nm～400nm的紫外光线对封框胶进行照射，以对其进行预固化处理。例如，加热主固化过程可以采用电阻丝加热、红外加热等。
例如，在第一基板和第二基板至少之一上涂覆取向材料组合物之前，还包括在第一基板(例如，彩膜基板)和第二基板(例如，阵列基板)上分别形成彩膜结构和阵列结构。
例如，图4为本公开的实施例提供的一种液晶显示面板的制备过程图，包括以下步骤：
步骤Ⅰ、提供第一基板(例如，彩膜基板)和第二基板(例如，阵列基板)，在第一基板和第二基板上分别形成彩膜结构和阵列结构。
步骤Ⅱ、在第一基板和第二基板的表面上分别涂覆实施例一中的取向材料组合物。
步骤Ⅲ、对第一基板和第二基板表面上涂覆的取向材料组合物进行摩擦工艺处理，以形成取向层。
步骤Ⅳ、在第一基板上施加封框胶，在第二基板上施加液晶。
步骤Ⅴ、对盒第一基板和第二基板以形成液晶盒，并采用紫外光照射封框胶进行预固化处理。相比于目前的工艺过程，在本公开的实施例的步骤Ⅳ中省去了掩膜板的应用，从而降低了液晶显示面板的制作成本，简化了封框胶预固化的工艺步骤，提高了液晶显示面板抵抗紫外光线照射的能力，提高了产品的品质。
例如，在上述所有步骤完成之后再对封框胶进行加热主固化处理。
本公开的实施例提供一种取向材料组合物、液晶显示面板及其制备方法、显示装置，具有以下至少一项有益效果：该取向材料组合物不仅能通过取向工艺形成取向层，还能有效阻挡紫外光线对液晶分子的照射。这样，将其应用于液晶显示面板时，针对不同显示区域大小的液晶显示面板不需要制作相应的紫外光掩膜板，从而降低了液晶显示面板的制作成本，简化了封框胶预固化的工艺步骤，提高了液晶显示面板抵抗紫外光线照射的能力，提高了产品的品质。
有以下几点需要说明：
(1)本公开实施例附图只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)为了清晰起见，在用于描述本公开的实施例的附图中，层或区域的厚度被放大或缩小，即这些附图并非按照实际的比例绘制。可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”，或者可以存在中间元件。
(3)在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，本公开的保护范围应以所述权利要求的保护范围为准。
本申请要求于2016年11月29日递交的中国专利申请第201611072258.8号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (16)

  1. 一种取向材料组合物，包括：
    质量百分含量大约为89wt％～94.9wt％的有机溶剂；
    质量百分含量大约为0.1wt％～1wt％的有机添加物；
    质量百分含量大约为5wt％～10wt％的聚酰亚胺树脂；
    其中，所述有机添加物为能够吸收波长大约为290nm～400nm的紫外光线的有机物。
  2. 根据权利要求1所述的取向材料组合物，其中，所述有机添加物为由以下通式表示的苯并三唑类化合物：
    Figure PCTCN2017091184-appb-100001
    其中，X为H、F、Cl、Br或I；R1为H或C4-C12烷基异构体，R2为CH3或C4-C8烷基异构体。
  3. 根据权利要求2所述的取向材料组合物，其中，所述有机添加物为：
    Figure PCTCN2017091184-appb-100002
  4. 根据权利要求1-3中任一项所述的取向材料组合物，其中，所述有机添加物的质量百分含量大约为0.5％～0.8wt％。
  5. 根据权利要求4所述的取向材料组合物，其中，所述有机添加物 的质量百分含量大约为0.6wt％。
  6. 根据权利要求1-5中任一项所述的取向材料组合物，其中，所述聚酰亚胺树脂的质量百分含量大约为6wt％～8wt％。
  7. 根据权利要求1-6中任一项所述的取向材料组合物，其中，所述有机溶剂包括N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂中的至少之一。
  8. 根据权利要求7所述的取向材料组合物，其中，所述有机溶剂包括N-甲基-2-吡咯烷酮、γ-丁内酯和丁基溶纤剂，且在所述取向材料组合物中，所述N-甲基-2-吡咯烷酮的质量百分含量大约为15wt％～20wt％；所述γ-丁内酯的质量百分含量大约为60wt％～70wt％；所述丁基溶纤剂的质量百分含量大约为10wt％～15wt％。
  9. 一种液晶显示面板，包括：
    相对设置的第一基板和第二基板，
    位于所述第一基板和所述第二基板之间的液晶，
    位于所述第一基板和所述第二基板至少之一的靠近所述液晶一侧表面上的取向层，
    其中，所述取向层由权利要求1-8中任一项所述的取向材料组合物形成。
  10. 根据权利要求9所述的液晶显示面板，其中，所述取向层为分层结构，所述有机添加物位于所述取向层的远离所述液晶的层结构中，以可对紫外光线进行吸收。
  11. 根据权利要求10所述的液晶显示面板，其中，所述聚酰亚胺树脂位于所述取向层的靠近所述液晶的层结构中，以可对所述液晶进行取向。
  12. 根据权利要求10-11中任一项所述的液晶显示面板，其中，所述第一基板为阵列基板，所述第二基板为彩膜基板。
  13. 一种显示装置，包括权利要求9-12中任一项所述的液晶显示面板。
  14. 一种液晶显示面板的制备方法，包括：
    提供第一基板和第二基板；
    在所述第一基板和所述第二基板至少之一的表面上涂覆一层权利要求1-8中任一项所述的取向材料组合物，
    对涂覆的所述取向材料组合物进行摩擦工艺处理以形成取向层；
    在所述第一基板和所述第二基板至少之一上施加封框胶；
    在所述第一基板和所述第二基板至少之一上施加液晶；
    对盒所述第一基板和所述第二基板；
    对所述封框胶进行固化处理。
  15. 根据权利要求14所述的制备方法，其中，对所述封框胶进行固化处理包括紫外光预固化处理和加热主固化处理。
  16. 根据权利要求14或15所述的制备方法，其中，所述第一基板和所述第二基板分别为彩膜基板和阵列基板，在所述第一基板和所述第二基板至少之一的表面上涂覆所述取向材料组合物之前，在所述第一基板和所述第二基板上分别形成彩膜结构和阵列结构。
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