WO2019196152A1 - 一种液晶显示面板的制作方法以及液晶介质组合物 - Google Patents

一种液晶显示面板的制作方法以及液晶介质组合物 Download PDF

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WO2019196152A1
WO2019196152A1 PCT/CN2018/085781 CN2018085781W WO2019196152A1 WO 2019196152 A1 WO2019196152 A1 WO 2019196152A1 CN 2018085781 W CN2018085781 W CN 2018085781W WO 2019196152 A1 WO2019196152 A1 WO 2019196152A1
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liquid crystal
ultraviolet light
display panel
crystal layer
upper substrate
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French (fr)
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兰松
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US15/776,088 priority Critical patent/US20190310523A1/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/52Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54Additives having no specific mesophase characterised by their chemical composition
    • C09K19/542Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/52Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54Additives having no specific mesophase characterised by their chemical composition
    • C09K19/56Aligning agents
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788Surface-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
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0448Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06Non-steroidal liquid crystal compounds
    • C09K19/08Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/12Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C09K2019/121Compounds containing phenylene-1,4-diyl (-Ph-)
    • C09K2019/122Ph-Ph

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a method for fabricating a liquid crystal display panel and a liquid crystal medium composition.
  • phase-matching membranes are mainly classified into a friction phase-type material and a light phase-type material, but any alignment material has its own disadvantages.
  • the friction phase-matching material is liable to cause problems such as dust particles, static electricity, and brush marks to reduce the process yield.
  • the optical phase-matching material can avoid these problems, the heat resistance and aging resistance are not limited due to limited material properties. Good, at the same time, the ability to anchor liquid crystal molecules is weak, which affects the quality of the liquid crystal display panel.
  • the friction phase-matching material and the optical phase-matching material have high polarity and high water absorption, and the storage and transportation are easy to cause deterioration.
  • the phase distribution is uneven, and the material is expensive, and the process of forming a film on the liquid crystal display panel is also complicated, resulting in an increase in the cost of the liquid crystal display panel.
  • the conventional method is to add an additive material to the liquid crystal to achieve the purpose of replacing the alignment film.
  • Materials include nanoparticle cage polysilsesquioxanes, amine branched macromolecules, cetyltrimethylammonium bromide and alcohol small molecule materials;
  • An object of the embodiments of the present invention is to provide a method for fabricating a liquid crystal display panel and a liquid crystal medium composition, which can be omitted by adding a photoinitiator and an active monomer containing a flexible branch in a liquid crystal material, and combining special process conditions.
  • the conventional alignment film process can realize the liquid crystal alignment and prevent the impurity ions from diffusing into the liquid crystal layer, thereby greatly improving the quality of the liquid crystal display panel.
  • an embodiment of the present invention provides a method for fabricating a liquid crystal display panel, including:
  • liquid crystal medium composition comprises a liquid crystal material, a photoinitiator, and a reactive monomer containing a flexible branch, the liquid crystal material comprising liquid crystal molecules;
  • the agent reacts and deposits on the surfaces of the upper substrate and the lower substrate, respectively, and the liquid crystal molecules are aligned perpendicular to the upper substrate and the lower substrate;
  • the liquid crystal layer is irradiated with a second ultraviolet light while applying a voltage, so that a part of the active monomer and the light are induced.
  • the agent reacts and continues to deposit on the surfaces of the upper substrate and the lower substrate, respectively, and the liquid crystal molecules generate a pretilt angle;
  • the method further includes:
  • the liquid crystal layer After removing the voltage on both sides of the liquid crystal layer, the liquid crystal layer is irradiated with a third ultraviolet light to react the active monomer with the photoinitiator;
  • the mass percentage of the liquid crystal material is 94.5% to 98.9%
  • the mass percentage of the reactive monomer is 1% to 5%
  • the mass percentage of the photoinitiator is 0.1%. 0.5%.
  • the time during which the liquid crystal layer is irradiated with the first ultraviolet light is between 1 minute and 60 minutes, and the second ultraviolet light is irradiated to the liquid crystal layer.
  • the time for the third ultraviolet light irradiation on the liquid crystal layer is between 30 minutes and 100 minutes.
  • the reactive monomer reacts with the photoinitiator by the first ultraviolet light irradiation, the second ultraviolet light irradiation, and the third ultraviolet light irradiation. And forming a first polymer layer and a second polymer layer on the upper substrate and the lower substrate surface, respectively, wherein the first polymer layer and the second polymer layer each have a thickness of 200 angstroms -1200 angstroms.
  • the reactive monomer may be: At least one of them.
  • the photoinitiator may be one or more of azobisisobutyronitrile, dioxanes, diacyl peroxides, and peroxylipids. combination.
  • the temperature at which the liquid crystal layer is heated is between 70 degrees Celsius and 100 degrees Celsius.
  • the intensity of the first ultraviolet light irradiation, the second ultraviolet light irradiation, and the third ultraviolet light irradiation on the liquid crystal layer are both 85 mW/cm 2 . Between 100 mW/cm2.
  • an embodiment of the present invention further provides a method for fabricating a liquid crystal display panel, including:
  • liquid crystal medium composition comprises a liquid crystal material, a photoinitiator, and a reactive monomer containing a flexible branch, the liquid crystal material comprising liquid crystal molecules;
  • the agent reacts and deposits on the surfaces of the upper substrate and the lower substrate, respectively, and the liquid crystal molecules are aligned perpendicular to the upper substrate and the lower substrate;
  • the liquid crystal layer is irradiated with a second ultraviolet light while applying a voltage, so that a part of the active monomer and the light are induced.
  • the agent reacts and continues to deposit on the surfaces of the upper and lower substrates, respectively, and the liquid crystal molecules produce a pretilt angle.
  • the voltage is applied to both sides of the liquid crystal layer, and after the liquid crystal molecules are deflected, the liquid crystal layer is irradiated with a second ultraviolet light while applying a voltage.
  • the method further includes:
  • the liquid crystal layer is irradiated with a third ultraviolet light to cause the active monomer to react with the photoinitiator.
  • the time during which the liquid crystal layer is irradiated with the first ultraviolet light is between 1 minute and 60 minutes, and the second ultraviolet light is irradiated to the liquid crystal layer.
  • the time for the third ultraviolet light irradiation on the liquid crystal layer is between 30 minutes and 100 minutes.
  • the reactive monomer reacts with the photoinitiator by the first ultraviolet light irradiation, the second ultraviolet light irradiation, and the third ultraviolet light irradiation. And forming a first polymer layer and a second polymer layer on the upper substrate and the lower substrate surface, respectively, wherein the first polymer layer and the second polymer layer each have a thickness of 200 angstroms -1200 angstroms.
  • the mass percentage of the liquid crystal material is 94.5% to 98.9%, and the mass percentage of the reactive monomer is 1% to 5%.
  • the mass percentage of the photoinitiator is from 0.1% to 0.5%.
  • the reactive monomer may be: At least one of them.
  • the photoinitiator may be one or more of azobisisobutyronitrile, dioxanes, diacyl peroxides, and peroxylipids. combination.
  • the temperature at which the liquid crystal layer is heated is between 70 degrees Celsius and 100 degrees Celsius.
  • the intensity of the first ultraviolet light irradiation, the second ultraviolet light irradiation, and the third ultraviolet light irradiation on the liquid crystal layer are both 85 mW/cm 2 . Between 100 mW/cm2.
  • a liquid crystal medium composition comprising: a liquid crystal material, a photoinitiator, and a reactive monomer containing a flexible branch, the liquid crystal material comprising liquid crystal molecules;
  • the reactive monomer can be: At least one of them;
  • the photoinitiator may be one or a combination of azobisisobutyronitrile, dioxanes, diacyl peroxides, and peroxylipids;
  • the mass percentage of the liquid crystal material is 94.5% to 98.9%
  • the mass percentage of the reactive monomer is 1% to 5%
  • the mass percentage of the photoinitiator is 0.1%. 0.5%. .
  • the invention provides a method for fabricating a liquid crystal display panel and a liquid crystal medium composition, which can save the traditional alignment by adding a photoinitiator and an active monomer containing a flexible branch in the liquid crystal material, and combining special process conditions.
  • the film process can realize the alignment of the liquid crystal, and can prevent the impurity ions from diffusing into the liquid crystal layer, thereby greatly improving the quality of the liquid crystal display panel.
  • FIG. 1 is a flow chart showing a method of fabricating a liquid crystal display panel in an embodiment of the present invention.
  • Embodiments of the present invention provide a method of fabricating a liquid crystal display panel.
  • FIG. 2 is a schematic diagram of steps S101 and S102 of the method of fabricating the liquid crystal display panel in the embodiment of the present invention.
  • FIG. 3 is a schematic diagram of step S103 of the method of fabricating the liquid crystal display panel in the embodiment of the present invention.
  • step S103 is a schematic diagram of step S103 of the method of fabricating the liquid crystal display panel in the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of step S105 of the method of fabricating the liquid crystal display panel in the embodiment of the present invention.
  • the present invention first provides a liquid crystal medium composition comprising a liquid crystal material, a photoinitiator, and an active monomer containing a flexible branch; the liquid crystal material comprising liquid crystal molecules.
  • the active monomer containing a flexible branch is At least one of them.
  • the photoinitiator is one or a combination of azobisisobutyronitrile, dioxane, diacyl peroxide and peroxylipid.
  • the mass percentage of the liquid crystal material is 94.5% to 98.9%
  • the mass percentage of the reactive monomer is 1% to 5%
  • the mass percentage of the photoinitiator is 0.1% to 0.5%.
  • the method for fabricating the liquid crystal display panel provided by the present invention mainly achieves the uniform arrangement of the liquid crystal molecules and the liquid crystal display panel by the special process conditions through the liquid crystal medium composition provided above.
  • the impurity ions diffuse into the liquid crystal layer, which greatly improves the quality of the liquid crystal display panel.
  • FIG. 1 is a flow chart of a method for fabricating a liquid crystal display panel according to an embodiment of the present invention.
  • Embodiments of the present invention provide a method for fabricating a liquid crystal display panel, the method comprising the following steps:
  • liquid crystal medium composition comprises a liquid crystal material, a photoinitiator, and a reactive monomer containing a flexible branch, the liquid crystal material comprising liquid crystal molecules;
  • the liquid crystal medium composition is dripped on the upper substrate or the lower substrate, and a sealant is applied on a periphery of the liquid crystal medium composition on the lower substrate or the upper substrate, and the upper substrate and the lower substrate are coated Forming a substrate assembly and curing the sealant, wherein the liquid crystal medium composition between the upper substrate and the lower substrate forms a liquid crystal layer;
  • FIG. 2 is a schematic diagram of steps S101 and S102 of the method for fabricating a liquid crystal display panel according to an embodiment of the present invention.
  • step S101 an upper substrate 10, a lower substrate 20, and a liquid crystal medium composition are provided;
  • the liquid crystal medium composition includes a liquid crystal material, a photoinitiator, and an active monomer 30 containing a flexible branch;
  • the liquid crystal material includes Liquid crystal molecules 40.
  • the flexible monomer-containing active monomer 30 is At least one of them.
  • the photoinitiator is one or a combination of azobisisobutyronitrile, dioxane, diacyl peroxide and peroxylipid.
  • the mass percentage of the liquid crystal material is 94.5% to 98.9%
  • the mass percentage of the reactive monomer is 1% to 5%
  • the mass percentage of the photoinitiator is 0.1%. 0.5%.
  • step S102 the liquid crystal medium composition is dripped on the upper substrate 10 or the lower substrate 20, and a sealant 50 is applied on the lower substrate 20 or the upper substrate 10 corresponding to the periphery of the liquid crystal medium composition.
  • the upper substrate 10 and the lower substrate 20 are assembled and bonded together, and the sealant 50 is cured.
  • the liquid crystal medium composition between the upper substrate 10 and the lower substrate 20 forms a liquid crystal layer 60.
  • the sealant may be cured by heating or ultraviolet light irradiation.
  • the step S102 further includes: coating the conductive adhesive 70 on the lower substrate 20 or the upper substrate 10 corresponding to the periphery of the sealant 50 before the upper substrate 10 and the lower substrate 20 are assembled. .
  • the upper substrate 10 and the lower substrate 20 are assembled in a vacuum environment.
  • the upper substrate 10 is a CF substrate
  • the lower substrate 20 is a TFT substrate
  • a common electrode 80 is disposed on a side of the upper substrate 10 adjacent to the liquid crystal layer 60, and the lower substrate is adjacent to a liquid crystal layer.
  • a pixel electrode 90 is provided on the side.
  • FIG. 3 is a schematic diagram of step S103 of the method for fabricating a liquid crystal display panel according to an embodiment of the present invention.
  • step S103 the liquid crystal layer 60 is heated, and after the morphology of the liquid crystal molecules 40 is changed, the liquid crystal layer 60 is irradiated with the first ultraviolet light while being heated, so that part of the The reactive monomer 30 reacts with the photoinitiator and is deposited on the surface of the upper substrate 10 and the lower substrate 20, respectively, and the liquid crystal molecules 40 are aligned perpendicular to the upper substrate 10 and the lower substrate 20.
  • the temperature for heating the liquid crystal layer 60 is between 70 degrees Celsius and 100 degrees Celsius; and the time for the first ultraviolet light irradiation to the liquid crystal layer 60 is between 1 minute and 60 minutes;
  • the intensity of the first ultraviolet light irradiation of the liquid crystal layer 60 is between 85 mW/cm 2 and 100 mW/cm 2 .
  • FIG. 4 is a schematic diagram of step S103 of the method for fabricating a liquid crystal display panel according to an embodiment of the present invention.
  • step S104 a voltage is applied to both sides of the liquid crystal layer 60, and after the liquid crystal molecules 40 are deflected, the liquid crystal layer 60 is irradiated with a second ultraviolet light while applying a voltage, so that part of the The reactive monomer 30 reacts with the photoinitiator and continues to be deposited on the surfaces of the upper substrate 10 and the lower substrate 20, respectively, and the liquid crystal molecules 40 generate a pretilt angle.
  • a voltage applied to both sides of the liquid crystal layer 60 is 13 to 25 V; a time for the second ultraviolet light to be irradiated to the liquid crystal layer 60 is between 30 seconds and 200 seconds; and the liquid crystal layer 60 is The intensity of the second ultraviolet light irradiation was between 85 mW/cm 2 and 100 mW/cm 2 .
  • the method for fabricating a liquid crystal display panel provided by the present invention further includes the step S105: after removing the voltage on both sides of the liquid crystal layer, performing a third ultraviolet light irradiation on the liquid crystal layer, so that the active monomer is in the All reactions are carried out under the action of a photoinitiator.
  • FIG. 5 is a schematic diagram of step S105 of the method for fabricating a liquid crystal display panel according to an embodiment of the present invention.
  • step S105 after the voltages on both sides of the liquid crystal layer 60 are removed, the liquid crystal layer 60 is irradiated with a third ultraviolet light to cause the active monomer 30 to react with the photoinitiator and continue. Deposited on the surfaces of the upper substrate 10 and the lower substrate 20, respectively.
  • the time for performing the third ultraviolet light irradiation on the liquid crystal layer 60 is between 30 minutes and 100 minutes; and the intensity of the third ultraviolet light irradiation on the liquid crystal layer 60 is between 85 milliwatts/ Square centimeter - 100 mW / cm 2 .
  • the reactive monomer 30 reacts with the photoinitiator by the first ultraviolet light irradiation, the second ultraviolet light irradiation, and the third ultraviolet light irradiation.
  • the invention provides a method for fabricating a liquid crystal display panel and a liquid crystal medium composition, which can save the traditional alignment by adding a photoinitiator and an active monomer containing a flexible branch in the liquid crystal material, and combining special process conditions.
  • the film process can realize the alignment of the liquid crystal, and can prevent the impurity ions from diffusing into the liquid crystal layer, thereby greatly improving the quality of the liquid crystal display panel.

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Abstract

一种液晶显示面板的制作方法及液晶介质组合物。通过在液晶材料中加入光引发剂和含有柔性支链的活性单体(30),并结合特殊的制程条件,可省去传统的配向膜制程,且可以实现液晶配向,又可以防止杂质离子扩散到液晶层中,提高了液晶显示面板的品质。

Description

一种液晶显示面板的制作方法以及液晶介质组合物 技术领域
本发明涉及液晶显示领域,具体涉及一种液晶显示面板的制作方法以及液晶介质组合物。
背景技术
在液晶显示面板的CF基板和TFT基板上,分别有一层薄膜材料,其主要作用是使液晶分子按一定方向排列,我们称之为配向膜。这种配相膜主要分为摩擦配相型材料和光配相型材料,但是,无论那种配向材料都会有各自的缺点。首先摩擦配相型材料容易造成粉尘颗粒、静电残留、刷痕等问题降低工艺良率,而光配相型材料虽然可以避免这些问题,但由于材料特性受限,耐热性和耐老化性不佳,同时锚定液晶分子的能力也较弱,从而影响液晶显示面板的品质;其次,摩擦配相型材料和光配相型材料本身就具有高极性和高吸水性,存储和运送容易造成变质而导致配相不均,并且材料价格昂贵,在液晶显示面板上成膜的工艺也较为复杂,导致液晶显示面板成本提高。
若将液晶显示面板中的配向膜省去,则液晶分子无法统一排列,导致液晶显示面板显示异常;现有常用的方法是在液晶中加入添加剂材料,以达到取代了配向膜的目的,这些添加剂材料包括纳米粒子笼型聚倍半硅氧烷、胺类支化状大分子、十六烷基三甲基溴化铵及醇类小分子材料等;
然而将这些添加剂材料应用到液晶中,自身中的极性基团会污染液晶,导致液晶显示面板品质较差。
技术问题
本发明实施例的目的在于提供一种液晶显示面板的制作方法以及液晶介质组合物,通过在液晶材料中加入光引发剂和含有柔性支链的活性单体,并结合特殊的制程条件,可省去传统的配向膜制程,且可以实现液晶配向,又可以防止杂质离子扩散到液晶层中,大大提高了液晶显示面板的品质。
技术解决方案
为实现上述目的,本发明实施例提供一种液晶显示面板的制作方法,其包括:
提供一上基板、一下基板、及液晶介质组合物,其中,所述液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;
在所述上基板或者下基板上滴注所述液晶介质组合物,在所述下基板或者上基板上对应所述液晶介质组合物的外围涂布密封胶,将所述上基板与下基板组立贴合,并对所述密封胶进行固化,其中,所述上基板与下基板之间的液晶介质组合物形成液晶层;
对所述液晶层进行加热,待所述液晶分子的形态发生变化后,在加热的同时,对所述液晶层进行第一次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面沉积,且所述液晶分子垂直于所述上基板与下基板排列;
在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角;其中,
所述在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角的步骤之后,还包括:
撤去所述液晶层两侧的电压后,对所述液晶层进行第三次紫外光照射,以使得所述活性单体与所述光引发剂全部反应;
在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行第一 次紫外光照射的时间介于1分钟-60分钟之间,对所述液晶层进行第二次紫外光线照射的时间介于30秒-200秒之间,对所述液晶层进行第三次紫外光照射的时间介于30分钟-100分钟之间。
在本发明的液晶显示面板的制作方法中,通过所述第一次紫外光照射、第二次紫外光照射、及第三次紫外光照射,所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面形成第一聚合物层和第二聚合物层,其中,所述第一聚合物层与所述第二聚合物层的厚度均介于200埃米-1200埃米之间。
在本发明的液晶显示面板的制作方法中,所述活性单体可以为:
Figure PCTCN2018085781-appb-000001
Figure PCTCN2018085781-appb-000002
中的至少一种。
在本发明的液晶显示面板的制作方法中,所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行加热的温度介于70摄氏度-100摄氏度之间。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行第一次紫外光照射、第二次紫外光照射以及第三次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
为实现上述目的,本发明实施例还提供一种液晶显示面板的制作方法,其包括:
提供一上基板、一下基板、及液晶介质组合物,其中,所述液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;
在所述上基板或者下基板上滴注所述液晶介质组合物,在所述下基板或者上基板上对应所述液晶介质组合物的外围涂布密封胶,将所述上基板与下基板组立贴合,并对所述密封胶进行固化,其中,所述上基板与下基板之间的液晶介质组合物形成液晶层;
对所述液晶层进行加热,待所述液晶分子的形态发生变化后,在加热的同时,对所述液晶层进行第一次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面沉积,且所述液晶分子垂直于所述上基板与下基板排列;
在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角。
在本发明的液晶显示面板的制作方法中,所述在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角的步骤之后,还包括:
撤去所述液晶层两侧的电压后,对所述液晶层进行第三次紫外光照射,以使得所述活性单体与所述光引发剂全部反应。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行第一次紫外光照射的时间介于1分钟-60分钟之间,对所述液晶层进行第二次紫外光线照射的时间介于30秒-200秒之间,对所述液晶层进行第三次紫外光照射的时间介于30分钟-100分钟之间。
在本发明的液晶显示面板的制作方法中,通过所述第一次紫外光照射、第二次紫外光照射、及第三次紫外光照射,所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面形成第一聚合物层和第二聚合物层,其中,所述第一聚合物层与所述第二聚合物 层的厚度均介于200埃米-1200埃米之间。
在本发明的液晶显示面板的制作方法中,在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
在本发明的液晶显示面板的制作方法中,所述活性单体可以为:
Figure PCTCN2018085781-appb-000003
中的至少一种。
在本发明的液晶显示面板的制作方法中,所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行加热的温度介于70摄氏度-100摄氏度之间。
在本发明的液晶显示面板的制作方法中,对所述液晶层进行第一次紫外光照射、第二次紫外光照射以及第三次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
依据本发明的上述目的,还提供一种液晶介质组合物,其包括:液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;其中,
所述活性单体可以为:
Figure PCTCN2018085781-appb-000004
Figure PCTCN2018085781-appb-000005
中的至少一种;
所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合;
在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。。
有益效果
本发明提供的一种液晶显示面板的制作方法以及液晶介质组合物,通过在液晶材料中加入光引发剂和含有柔性支链的活性单体,并结合特殊的制程条件,可省去传统的配向膜制程,且可以实现液晶配向,又可以防止杂质离子扩散到液晶层中,大大提高了液晶显示面板的品质。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例中的液晶显示面板的制作方法的流程图。本发明实施例提供一种液晶显示面板的制作方法。
图2是本发明实施例中的液晶显示面板的制作方法的步骤S101和步骤S102的示意图。
图3是本发明实施例中的液晶显示面板的制作方法的步骤S103的示意图。
图4是本发明实施例中的液晶显示面板的制作方法的步骤S103的示意图。
图5是本发明实施例中的液晶显示面板的制作方法的步骤S105的示意图。
本发明的最佳实施方式
下面详细描述本发明的实施方式,所述实施方式的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性 的,仅用于解释本发明,而不能理解为对本发明的限制。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域技术人员在没有付出创造性劳动前提下所获得的所有其他实施例,都属于本申请的保护范围。
本申请的说明书和权利要求书以及上述附图中的术语“第一”、“第二”、“第三”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应当理解,这样描述的对象在适当情况下可以互换。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含。例如,包含了一系列步骤的过程、方法或包含了一系列模块或单元的装置、终端、系统不必限于清楚地列出的那些步骤或模块或单元,还可以包括没有清楚地列出的步骤或模块或单元,也可以包括对于这些过程、方法、装置、终端或系统固有的其它步骤或模块或单元。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开,下文中对特定例子的部件和设置进行描述。当然,它们仅仅为示例,并且目的不在于限制本发明。此外,本发明可以在不同例子中重复参考数字和/或参考字母,这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施方式和/或设置之间的关系。此外,本发明提供了的各种特定的工艺和材料的例子,但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本发明首先提供一种液晶介质组合物,包括液晶材料、光引发剂、及含有柔性支链的活性单体;所述液晶材料包括液晶分子。
其中,所述含有柔性支链的活性单体为
Figure PCTCN2018085781-appb-000006
中的至少一种。
其中,所述光引发剂为偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
具体的,在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
需要说明的是,本发明提供的液晶显示面板的制作方法,主要是通过上述提供的液晶介质组合物,经过特殊的制程条件,既可以达到使液晶分子统一排列,又可以防止液晶显示面板中的杂质离子扩散到液晶层中,大大提高了液晶显示面板的品质。
请参阅图1,图1是本发明实施例中的液晶显示面板的制作方法的流程图。本发明实施例提供一种液晶显示面板的制作方法,该方法包括以下步骤:
S101、提供一上基板、一下基板、及液晶介质组合物,其中,所述液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;
S102、在所述上基板或者下基板上滴注所述液晶介质组合物,在所述下基板或者上基板上对应所述液晶介质组合物的外围涂布密封胶,将所述上基板与下基板组立贴合,并对所述密封胶进行固化,其中,所述上基板与下基板之间的液晶介质组合物形成液晶层;
S103、对所述液晶层进行加热,待所述液晶分子的形态发生变化后,在加热的同时,对所述液晶层进行第一次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面沉积,且所述液晶分子垂直于所述上基板与下基板排列;
S104、在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与 下基板表面沉积,且所述液晶分子产生预倾角。
请参阅图2,图2是本发明实施例中的液晶显示面板的制作方法的步骤S101和步骤S102的示意图。在步骤S101中,提供一上基板10、一下基板20、及液晶介质组合物;该液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体30;所述液晶材料包括液晶分子40。
其中,所述含有柔性支链的活性单体30为
Figure PCTCN2018085781-appb-000007
中的至少一种。
其中,所述光引发剂为偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
在步骤S102中,在所述上基板10或者下基板20上滴注所述液晶介质组合物,在所述下基板20或者上基板10上对应所述液晶介质组合物的外围涂布密封胶50,将所述上基板10与下基板20组立贴合,并对所述密封胶50进行固化,其中,所述上基板10与下基板20之间的液晶介质组合物形成液晶层60。
具体的,可采用加热或紫外光照射的方法对所述密封胶进行固化。
优选的,所述步骤S102还包括:在所述上基板10与下基板20组立贴合之前,在所述下基板20或者上基板10上对应所述密封胶50的外围涂布导电胶70。
优选的,在真空环境下将所述上基板10与下基板20组立贴合.
具体的,所述上基板10为CF基板,所述下基板20为TFT基板,所述上基板10上靠近液晶层60的一侧设有公共电极80,所述下基 板上靠近液晶层的一侧设有像素电极90。
请参阅图3,图3是本发明实施例中的液晶显示面板的制作方法的步骤S103的示意图。在步骤S103中,对所述液晶层60进行加热,待所述液晶分子40的形态发生变化后,在加热的同时,对所述液晶层60进行第一次紫外光照射,以使得部分所述活性单体30与所述光引发剂发生反应,并分别在所述上基板10与下基板20表面沉积,且所述液晶分子40垂直于所述上基板10与下基板20排列。
具体的,对所述液晶层60进行加热的温度介于70摄氏度-100摄氏度之间;对所述液晶层60进行第一次紫外光照射的时间介于1分钟-60分钟之间;对所述液晶层60进行第一次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
请参阅图4,图4是本发明实施例中的液晶显示面板的制作方法的步骤S103的示意图。在步骤S104中,在所述液晶层60两侧施加电压,待所述液晶分子40偏转后,在施加电压的同时,对所述液晶层60进行第二次紫外光照射,以使得部分所述活性单体30与所述光引发剂发生反应,并继续分别在所述上基板10与下基板20表面沉积,且所述液晶分子40产生预倾角。
具体的,在所述液晶层60两侧施加的电压为13~25V;对所述液晶层60进行第二次紫外光线照射的时间介于30秒-200秒之间;对所述液晶层60进行第二次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
进一步的,请继续参阅图1。本发明实施提供的液晶显示面板的制作方法,还包括步骤S105:撤去所述液晶层两侧的电压后,对所述液晶层进行第三次紫外光照射,以使得所述活性单体在所述光引发剂的作用下全部反应。
请参阅图5,图5是本发明实施例中的液晶显示面板的制作方法的步骤S105的示意图。在步骤S105中,撤去所述液晶层60两侧的 电压后,对所述液晶层60进行第三次紫外光照射,以使得所述活性单体30与所述光引发剂全部反应,并继续分别在所述上基板10与下基板20表面沉积。
具体的,对所述液晶层60进行第三次紫外光照射的时间介于30分钟-100分钟之间;对所述液晶层60进行第三次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
请结合图3、图4、图5,通过所述第一次紫外光照射、第二次紫外光照射、及第三次紫外光照射,所述活性单体30与所述光引发剂发生反应,并分别在所述上基板与下基板表面形成第一聚合物层101和第二聚合物层201,其中,所述第一聚合物层101与所述第二聚合物层201的厚度均介于200埃米-1200埃米之间。
本发明提供的一种液晶显示面板的制作方法以及液晶介质组合物,通过在液晶材料中加入光引发剂和含有柔性支链的活性单体,并结合特殊的制程条件,可省去传统的配向膜制程,且可以实现液晶配向,又可以防止杂质离子扩散到液晶层中,大大提高了液晶显示面板的品质。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明。同时,对于本领域的技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (17)

  1. 一种液晶显示面板的制作方法,其包括:
    提供一上基板、一下基板、及液晶介质组合物,其中,所述液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;
    在所述上基板或者下基板上滴注所述液晶介质组合物,在所述下基板或者上基板上对应所述液晶介质组合物的外围涂布密封胶,将所述上基板与下基板组立贴合,并对所述密封胶进行固化,其中,所述上基板与下基板之间的液晶介质组合物形成液晶层;
    对所述液晶层进行加热,待所述液晶分子的形态发生变化后,在加热的同时,对所述液晶层进行第一次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面沉积,且所述液晶分子垂直于所述上基板与下基板排列;
    在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角;其中,
    所述在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角的步骤之后,还包括:
    撤去所述液晶层两侧的电压后,对所述液晶层进行第三次紫外光照射,以使得所述活性单体与所述光引发剂全部反应;
    在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
  2. 根据权利要求1所述的液晶显示面板的制作方法,其中,对 所述液晶层进行第一次紫外光照射的时间介于1分钟-60分钟之间,对所述液晶层进行第二次紫外光线照射的时间介于30秒-200秒之间,对所述液晶层进行第三次紫外光照射的时间介于30分钟-100分钟之间。
  3. 根据权利要求1所述的液晶显示面板的制作方法,其中,通过所述第一次紫外光照射、第二次紫外光照射、及第三次紫外光照射,所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面形成第一聚合物层和第二聚合物层,其中,所述第一聚合物层与所述第二聚合物层的厚度均介于200埃米-1200埃米之间。
  4. 根据权利要求1所述的液晶显示面板的制作方法,其中,所述活性单体可以为:
    Figure PCTCN2018085781-appb-100001
    Figure PCTCN2018085781-appb-100002
    中的至少一种。
  5. 根据权利要求1所述的液晶显示面板的制作方法,其中,所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
  6. 根据权利要求1所述的液晶显示面板的制作方法,其中,对所述液晶层进行加热的温度介于70摄氏度-100摄氏度之间。
  7. 根据权利要求1所述的液晶显示面板的制作方法,其中,对所述液晶层进行第一次紫外光照射、第二次紫外光照射以及第三次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
  8. 一种液晶显示面板的制作方法,其包括:
    提供一上基板、一下基板、及液晶介质组合物,其中,所述液晶介质组合物包括液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;
    在所述上基板或者下基板上滴注所述液晶介质组合物,在所述下基板或者上基板上对应所述液晶介质组合物的外围涂布密封胶,将所述上基板与下基板组立贴合,并对所述密封胶进行固化,其中,所述上基板与下基板之间的液晶介质组合物形成液晶层;
    对所述液晶层进行加热,待所述液晶分子的形态发生变化后,在加热的同时,对所述液晶层进行第一次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基板表面沉积,且所述液晶分子垂直于所述上基板与下基板排列;
    在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角。
  9. 根据权利要求8所述的液晶显示面板的制作方法,其中,所述在所述液晶层两侧施加电压,待所述液晶分子偏转后,在施加电压的同时,对所述液晶层进行第二次紫外光照射,以使得部分所述活性单体与所述光引发剂发生反应,并继续分别在所述上基板与下基板表面沉积,且所述液晶分子产生预倾角的步骤之后,还包括:
    撤去所述液晶层两侧的电压后,对所述液晶层进行第三次紫外光照射,以使得所述活性单体与所述光引发剂全部反应。
  10. 根据权利要求9所述的液晶显示面板的制作方法,其中,对所述液晶层进行第一次紫外光照射的时间介于1分钟-60分钟之间,对所述液晶层进行第二次紫外光线照射的时间介于30秒-200秒之间,对所述液晶层进行第三次紫外光照射的时间介于30分钟-100分钟之间。
  11. 根据权利要求9所述的液晶显示面板的制作方法,其中,通过所述第一次紫外光照射、第二次紫外光照射、及第三次紫外光照射,所述活性单体与所述光引发剂发生反应,并分别在所述上基板与下基 板表面形成第一聚合物层和第二聚合物层,其中,所述第一聚合物层与所述第二聚合物层的厚度均介于200埃米-1200埃米之间。
  12. 根据权利要求8所述的液晶显示面板的制作方法,其中,在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
  13. 根据权利要求8所述的液晶显示面板的制作方法,其中,所述活性单体可以为:
    Figure PCTCN2018085781-appb-100003
    Figure PCTCN2018085781-appb-100004
    中的至少一种。
  14. 根据权利要求8所述的液晶显示面板的制作方法,其中,所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二酰类以及过氧化脂类中的一种或多种组合。
  15. 根据权利要求8所述的液晶显示面板的制作方法,其中,对所述液晶层进行加热的温度介于70摄氏度-100摄氏度之间。
  16. 根据权利要求9所述的液晶显示面板的制作方法,其中,对所述液晶层进行第一次紫外光照射、第二次紫外光照射以及第三次紫外光照射的强度均介于85毫瓦/平方厘米-100毫瓦/平方厘米之间。
  17. 一种液晶介质组合物,其包括:液晶材料、光引发剂、及含有柔性支链的活性单体,所述液晶材料包括液晶分子;其中,
    所述活性单体可以为:
    Figure PCTCN2018085781-appb-100005
    Figure PCTCN2018085781-appb-100006
    中的至少一种;
    所述光引发剂可以为:偶氮二异丁腈、过氧化二烷类、过氧化二 酰类以及过氧化脂类中的一种或多种组合;
    在所述液晶介质组合物中,所述液晶材料的质量百分比为94.5%~98.9%,所述活性单体的质量百分比为1%~5%,所述光引发剂的质量百分比为0.1%~0.5%。
PCT/CN2018/085781 2018-04-09 2018-05-07 一种液晶显示面板的制作方法以及液晶介质组合物 Ceased WO2019196152A1 (zh)

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