WO2016192137A1 - 液晶配向方法 - Google Patents

液晶配向方法 Download PDF

Info

Publication number
WO2016192137A1
WO2016192137A1 PCT/CN2015/081791 CN2015081791W WO2016192137A1 WO 2016192137 A1 WO2016192137 A1 WO 2016192137A1 CN 2015081791 W CN2015081791 W CN 2015081791W WO 2016192137 A1 WO2016192137 A1 WO 2016192137A1
Authority
WO
WIPO (PCT)
Prior art keywords
paramagnetic
magnetic field
particles
liquid crystal
chain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/081791
Other languages
English (en)
French (fr)
Inventor
张伟基
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/778,201 priority Critical patent/US20170102572A1/en
Publication of WO2016192137A1 publication Critical patent/WO2016192137A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • G02F1/133719—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films with coupling agent molecules, e.g. silane
    • 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
    • G02F1/1341—Filling or closing of cells

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a liquid crystal alignment method.
  • rubbing cloth is usually used to rub against a glass substrate. After the rubbing, grooves are arranged on the glass substrate in a certain direction. The liquid crystal molecules are arranged in accordance with the grooves and form a predetermined pretilt angle, thereby completing the alignment process.
  • the yield of the prepared liquid crystal display is also low.
  • the present invention proposes a liquid crystal alignment method. According to the method of the present invention, it is possible to avoid the use of a rubbing cloth and achieve liquid crystal alignment in a non-contact manner.
  • the liquid crystal alignment method of the present invention comprises the following steps: Step 1: coating a liquid alignment film containing paramagnetic chain particles on a display region of a substrate; and step 2: placing the substrate in a constant magnetic field to make a paramagnetic chain The particles are stably arranged along the direction of the magnetic field; Step 3: removing the magnetic field; Step 4: adding liquid crystal material to the display area of the substrate, and the molecules of the liquid crystal material are arranged according to the arrangement direction of the paramagnetic chain particles.
  • the chain-like particles can guide molecules of the liquid crystal material in a predetermined direction on the substrate. Columns, thereby achieving liquid crystal alignment.
  • the non-contact liquid crystal alignment process is realized, so that the glass substrate is not damaged and static electricity is not generated.
  • the yield of the manufactured liquid crystal display will also be greatly improved.
  • the liquid alignment film is also pre-cured.
  • pre-curing means that the fluid state is directed to the film material to become non-fluid to avoid waste.
  • the substrate is pre-baked to pre-cure the liquid alignment film.
  • the constant magnetic field is a uniform magnetic field.
  • the directions and magnetic inductions of the respective positions are the same, thereby ensuring that all the paramagnetic chain particles are stably aligned in the same direction.
  • the paramagnetic chain-like particles are copper complexes with [Cu(NH 3 ) 4 ] 2+ or [Cu(H 2 O) 4 ] 2+ .
  • the liquid alignment film also includes polyimide and N-methylpyrrolidone as a carrier liquid for the paramagnetic chain particles.
  • the prebaking temperature is between 80 ° C and 100 ° C and the magnetic field strength of the uniform magnetic field is between 0.1 T and 1.5 T. Under these conditions, the paramagnetic chain particles will quickly steer to be stably aligned along the direction of the uniform magnetic field. After the liquid alignment film is pre-cured, the aligned state of the aligned paramagnetic chain particles is no longer changed, thereby facilitating the implementation of the subsequent steps.
  • the liquid alignment film has already solidified before the paramagnetic chain particles are not completely stably aligned, and the subsequent alignment of the molecules of the liquid crystal material with the paramagnetic chain particles cannot be achieved. arrangement. More importantly, if the temperature is too high, it may cause loss of paramagnetism of the paramagnetic chain particles, so that the use of a uniform magnetic field to guide the alignment of the paramagnetic chain particles is completely impossible. When the temperature is lower than 80 ° C, the pre-curing speed of the liquid alignment film is very slow, which is not conducive to improving production efficiency. In addition, although the increase in magnetic induction can quickly align the paramagnetic chain particles, this leads to waste of energy. When the magnetic induction intensity is lowered, the paramagnetic chain particles cannot overcome the rotational resistance, and the paramagnetic chain particles can not be completely aligned in the direction of the magnetic field.
  • the paramagnetic chain particles have a mass content in their carrier liquid of between 0.2% and 1%.
  • the paramagnetic chain particles can smoothly rotate under the action of a magnetic field without intertwining due to excessive content of paramagnetic chain particles, and it is difficult to rotate or rotate in place. happening.
  • step three and step four there is an additional step of removing the paramagnetism of the paramagnetic chain particles. After removing the paramagnetism of the paramagnetic chain particles, it is possible to avoid the adverse effects of the magnetic field on the paramagnetic chain particles and affect the molecular arrangement of the liquid crystal material in the subsequent process. Column. Thereby, it is possible to ensure that the prepared liquid crystal display has good performance.
  • the substrate in an additional step, is subjected to a fortified bake at a temperature above the prebaking temperature.
  • the temperature of the enhanced baking is between 230 and 250 °C.
  • the advantages of the present invention over the prior art are: (1) according to the method of the present invention, a large number of paramagnetic chain-like particles are arranged on a stabilizing substrate in a predetermined direction using a magnetic field, and these chain-like particles can guide liquid crystal again. The molecules of the material are aligned on the substrate in a predetermined direction, thereby achieving a non-contact liquid crystal alignment. Therefore, the glass substrate is not damaged and static electricity is not generated. The yield of the manufactured liquid crystal display will also be greatly improved. (2) The method of the present invention is simple and convenient, and the production cost is low.
  • FIGS 1 to 4 schematically show the steps of carrying out the method according to the invention.
  • the liquid alignment film can first be formulated.
  • the liquid alignment film comprises N-methylpyrrolidone, polyimide, and paramagnetic chain particles, wherein N-methylpyrrolidone and polyimide serve as a carrier liquid for the paramagnetic chain particles.
  • Liquid alignment film materials containing N-methylpyrrolidone and polyimide are well known to those skilled in the art and will not be described herein.
  • the paramagnetic chain particles may be copper complexes with [Cu(NH 3 ) 4 ] 2+ or [Cu(H 2 O) 4 ] 2+ , which are also well known to those skilled in the art, here No longer.
  • the paramagnetic chain particles can be used as an alignment guide of molecules of a liquid crystal material.
  • Polyimide can be used to form an alignment film on a substrate, which will be described in detail below.
  • the disposed liquid alignment film is applied to the display region of the substrate 1. Since there is no magnetic field to guide the paramagnetic chain particles 3, the orientation of these paramagnetic chain particles 3 on the substrate 1 is disordered.
  • the substrate 1 is placed in a constant magnetic field 4.
  • the particles 3 are arranged in the direction of the magnetic field 4.
  • the constant magnetic field 4 used is a uniform magnetic field 4, as shown in FIG.
  • the magnetic induction intensity of each point is the same.
  • the magnetic induction is a vector, so that the magnitude and direction of the magnetic induction at each point are the same within the range of the uniform magnetic field 4.
  • the direction of the magnetic field 4 is the predetermined direction in which the liquid crystal is aligned. Therefore, in this embodiment, each of the plurality of paramagnetic chain-like particles 3 is stably aligned in the direction of the magnetic field 4, that is, stably aligned in a predetermined direction of the liquid crystal alignment.
  • the magnetic field strength of the uniform magnetic field 4 is between 0.1 T and 1.5 T. Under such conditions, the paramagnetic chain particles 3 are completely able to overcome the rotational resistance and are completely aligned in the direction of the uniform magnetic field 4. In a specific embodiment, the paramagnetic chain particles 3 have a mass content in the carrier liquid of between 0.2% and 1%. In this case, the paramagnetic chain-like particles 3 do not undergo a large amount of entanglement with each other, but the respective paramagnetic chain-like particles 3 can be rotated relatively independently.
  • the resistance of the paramagnetic chain particles 3 to each other during rotation is greatly increased, and may even directly cause the paramagnetic chain particles 3 to not follow the uniform magnetic field 4. Arranged in the direction.
  • the liquid alignment film is pre-cured while the substrate 1 coated with the liquid alignment film is placed to the constant magnetic field 4.
  • the substrate 1 is pre-baked to pre-cure the liquid alignment film.
  • the prebaking temperature is between 80 ° C and 100 ° C.
  • the alignment state of the aligned paramagnetic chain particles 3 is no longer changed, thereby facilitating the implementation of the subsequent steps. Since the paramagnetic chain particles 3 can be quickly turned under the action of the uniform magnetic field 4, and the pre-curing speed is slow, pre-curing the liquid alignment film material does not affect the arrangement of the paramagnetic chain particles 3, but also It helps to fix the alignment state of the aligned paramagnetic chain particles 3.
  • the magnetic field 4 is removed.
  • the polyimide forms an alignment film 5 attached to the substrate 1.
  • the paramagnetic chain-like particles 3 are present in the form of comb teeth 9 which protrude outside the alignment film 5.
  • the extending directions of the comb teeth 9 are substantially parallel, since the paramagnetic chain particles 3 have been arranged in the direction of the uniform magnetic field 4, so that the direction in which the comb teeth 9 extend is the former. The direction of the uniform magnetic field 4 described.
  • the substrate 1 is also subjected to intensive baking.
  • the temperature of the enhanced baking is higher than the temperature of the prebaking.
  • the temperature of the fortified bake is between 230 and 250 °C.
  • Enhanced baking can accelerate the volatilization rate of N-methylpyrrolidone.
  • Polyimide can also be used in this fortified baking The polymerization reaction occurs, whereby the alignment film 5 is firmly formed on the substrate 1.
  • the intensive baking can also destroy the paramagnetism of the paramagnetic chain particles 3, thereby avoiding the re-alignment of the paramagnetic chain particles 3 by other magnetic fields in the later process, which is extremely
  • the earth influences the predetermined liquid crystal alignment, and the orientation of the molecules 8 of the liquid crystal material under the guidance of the comb teeth 9 is as follows.
  • a liquid crystal material is added to the display area of the substrate 1.
  • the molecules 8 of the liquid crystal material are guided by the comb teeth 9 and arranged in a predetermined direction.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶配向方法，包括以下步骤，步骤一：将含有顺磁性链状颗粒（3）的液态配向膜料涂布在基板（1）的显示区域；步骤二：将基板（1）置于恒定磁场（4）中，以使顺磁性链状颗粒（3）沿着磁场（4）的方向稳定排列；步骤三：撤去磁场（4）；步骤四：向基板（1）的显示区域内加入液晶材料，液晶材料的分子（8）按照顺磁性链状颗粒（3）的排列方向而排列。液晶配向方法能够避免使用摩擦布，以非接触方式实现液晶配向。

Description

液晶配向方法
相关申请的交叉引用
本申请要求享有于2015年6月4日提交的名称为“液晶配向方法”的中国专利申请CN 201510304516.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及液晶显示领域，特别涉及一种液晶配向方法。
背景技术
在制备液晶显示器的过程中，为了使液晶分子按照一定方向取向排列，通常需要进行配向制程。
在现有技术中，通常使用摩擦布与玻璃基板进行摩擦。在摩擦后，在玻璃基板上会产生按一定方向排列的沟槽。液晶分子会按照这些沟槽排列并形成预定的预倾角，从而完成配向制程。
但是，在摩擦布与玻璃基板摩擦后，不可避免地会对玻璃基板造成破坏并且会产生静电，这会极大地影响配向制程的良率稳定性。由此，所制备的液晶显示器的良率也较低。
发明内容
针对上述问题，本发明提出了一种液晶配向方法。根据本发明的方法，能够避免使用摩擦布，并且以非接触方式来实现液晶配向。
本发明的液晶配向方法包括以下步骤：步骤一：将含有顺磁性链状颗粒的液态配向膜料涂布在基板的显示区域；步骤二：将基板置于恒定磁场中，以使顺磁性链状颗粒沿着磁场的方向稳定排列；步骤三：撤去磁场；步骤四：向基板的显示区域内加入液晶材料，液晶材料的分子按照顺磁性链状颗粒的排列方向而排列。
根据本发明的方法，在使用磁场将大量的顺磁性链状颗粒按照预定方向在稳定基板上排列后，这些链状颗粒可引导液晶材料的分子在基板上按照预定方向排 列，由此实现了液晶配向。通过这种方法，实现了非接触式的液晶配向过程，因此也就不会对玻璃基板造成破坏，也不会产生静电。所制造的液晶显示器的良率也会因此而大幅提升。
在一个实施例中，在步骤二中，还将液态配向膜料预固化。这里，预固化是指将流体态配向膜料变成非流体状，以避免其浪费。在一个优选的实施例中，在步骤二中，对基板进行预烘烤，以将液态配向膜料预固化。
在一个实施例中，在步骤二中，恒定磁场为匀强磁场。在匀强磁场中，各个位置的方向和磁感应强度均相同，由此能够确保所有的顺磁性链状颗粒按照相同的方向稳定排列。
在一个实施例中，顺磁性链状颗粒为带有[Cu(NH3)4]2+或[Cu(H2O)4]2+的铜络合物。液态配向膜料还包括作为顺磁性链状颗粒的载液的聚酰亚胺和N-甲基吡咯烷酮。在一个优选的实施例中，预烘烤的温度在80℃到100℃之间，匀强磁场的磁感应强度在0.1T到1.5T之间。在这种条件下，顺磁性链状颗粒会快速转向为沿着匀强磁场的方向稳定排列。在液态配向膜料预固化后，已经排列好的顺磁性链状颗粒的排列状态也就不再会发生变化，由此方便了后续步骤的实施。
如果温度高于100℃，会导致在顺磁性链状颗粒没有完全稳定地排列之前，液态配向膜料已经发生固化，也就不能实现后续将液晶材料的分子按照顺磁性链状颗粒的排列方向而排列。更重要地是，如果温度过高，有可能导致顺磁性链状颗粒的顺磁性丧失，这样就完全不能实现使用匀强磁场来引导顺磁性链状颗粒的排列。而温度低于80℃，液态配向膜料的预固化速度非常慢，不利于提高生产效率。此外，磁感应强度提高虽然可以使顺磁性链状颗粒快速排列，但是这会导致能源浪费。而磁感应强度降低，则顺磁性链状颗粒无法克服转动阻力，也就不能实现将顺磁性链状颗粒完全按照磁场方向排列。
在一个优选的实施例中，顺磁性链状颗粒在其载液中的质量含量在0.2％到1％之间。在这种液态配向膜料中，顺磁性链状颗粒可以在磁场的作用下顺畅地转动而不会由于顺磁性链状颗粒的含量过多导致相互缠结，而发生难以转动或转动不到位的情况。
在一个实施例中，在步骤三和步骤四之间，还具有去除顺磁性链状颗粒的顺磁性的附加步骤。在除去了顺磁性链状颗粒的顺磁性后，可以避免在随后的工艺过程中，磁场对这些顺磁性链状颗粒产生不良影响而影响液晶材料的分子的排 列。由此，可以保证所制备的液晶显示器具有良好的性能。
在一个实施例中，在附加步骤中，对基板进行温度高于预烘烤温度的强化烘烤。优选地，强化烘烤的温度在230-250℃之间。通过强化烘烤，顺磁性链状颗粒不再具有顺磁性，外界磁场也就不会再对其产生影响。此外，在这种强化烘烤过程中，液态配向膜料中的N-甲基吡咯烷酮会挥发掉，聚酰亚胺会发生聚合反应而形成牢固地附着在基板上的配向膜，由此简化了液晶显示器的生产步骤。
与现有技术相比，本发明的优点在于：(1)根据本发明的方法，在使用磁场将大量的顺磁性链状颗粒按照预定方向在稳定基板上排列，这些链状颗粒又可引导液晶材料的分子在基板上按照预定方向排列，由此实现了非接触式的液晶配向。因此，也就不会对玻璃基板造成破坏，也不会产生静电。所制造的液晶显示器的良率也会因此而大幅提升。(2)本发明的方法简单便捷，生产成本低。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1到4示意性地显示了实施根据本发明的方法的步骤。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。
具体实施方式
下面将结合附图对本发明作进一步说明。
在实施根据本发明的方法时，可以首先配制液态配向膜料。在一个实施例中，液态配向膜料含有N-甲基吡咯烷酮、聚酰亚胺和顺磁性链状颗粒，其中N-甲基吡咯烷酮和聚酰亚胺作为顺磁性链状颗粒的载液。含有N-甲基吡咯烷酮和聚酰亚胺的液态配向膜料是本领域的技术人员所熟知的技术，这里不再赘述。顺磁性链状颗粒可为带有[Cu(NH3)4]2+或[Cu(H2O)4]2+的铜络合物，这些物质也是本领域的技术人员所熟知的，这里不再赘述。顺磁性链状颗粒可用作液晶材料的分子的排列引导体。聚酰亚胺可用于形成基板上的配向膜，这将在下文中详细描述。
如图1所示，将所配置的液态配向膜料涂布到基板1的显示区域内。由于没有磁场来引导顺磁性链状颗粒3，因此这些顺磁性链状颗粒3在基板1上的取向是杂乱无章的。
接下来将基板1放置到恒定磁场4中。在磁场4的作用下，这些顺磁性链状 颗粒3沿着磁场4的方向排列。在一个优选的实施例中，所使用的恒定磁场4为匀强磁场4，如图2所示。在匀强磁场4的范围内，各点的磁感应强度均相同。尤其应理解地是，磁感应强度是矢量，因此在匀强磁场4的范围内，各点的磁感应强度的数值和方向均相同。这时，磁场4的方向就是液晶配向的预定方向。因此，在这种实施例中，多个顺磁性链状颗粒3中的每一个都沿着磁场4的方向稳定排列，也就是沿着液晶配向的预定方向稳定排列。
在一个具体的实施例中，匀强磁场4的磁感应强度在0.1T到1.5T之间。在这种条件下，顺磁性链状颗粒3完全能够克服转动阻力而完全按照匀强磁场4的方向排列。在一个具体的实施例中，顺磁性链状颗粒3在其载液中的质量含量在0.2％到1％之间。在这种情况下，顺磁性链状颗粒3相互之间不会发生大量的缠结，而是各个顺磁性链状颗粒3能够较为独立地转动。当顺磁性链状颗粒3的含量进一步增加时，顺磁性链状颗粒3在转动时相互之间的阻力会大大增加，甚至可能直接导致这些顺磁性链状颗粒3不能沿着匀强磁场4的方向而排列。
在另一个实施例中，在将涂布有液态配向膜料的基板1放置到恒定磁场4的同时，还将液态配向膜料预固化。例如，对基板1进行预烘烤，以使液态配向膜料预固化。在一个具体的实施例中，预烘烤的温度在80℃到100℃之间。在将液态配向膜料预固化后，已经排列完成的顺磁性链状颗粒3的排列状态也就不再会发生变化，由此方便了后续步骤的实施。由于顺磁性链状颗粒3能够在匀强磁场4的作用下迅速转向，而预固化的速度较慢，因此将液态配向膜料预固化不但不会影响顺磁性链状颗粒3的排列，相反还有助于将排列完成的顺磁性链状颗粒3的排列状态固定下来。
在将液态配向膜料预固化后，撤去磁场4。
待液态配向膜料中的N-甲基吡咯烷酮完全挥发之后，聚酰亚胺就会形成附着在基板1上的配向膜5。在这种情况下，顺磁性链状颗粒3则以伸出到配向膜5之外的梳齿9的形式存在。如图3所示，这些梳齿9的延伸方向为大体平行，这是由于顺磁性链状颗粒3之前已经按照匀强磁场4的方向而排列，因此实际上梳齿9的延伸方向就是前文所述的匀强磁场4的方向。
优选地，在撤去磁场4后，还对基板1进行强化烘烤。强化烘烤的温度高于预烘烤的温度。在一个具体的实施例中，强化烘烤的温度在230-250℃之间。强化烘烤可以加快N-甲基吡咯烷酮的挥发速度。聚酰亚胺也能够在这种强化烘烤下 发生聚合反应，由此在基板1上牢固地形成配向膜5。更重要地是，强化烘烤还能够破坏顺磁性链状颗粒3的顺磁性，由此可以避免在后期制程中顺磁性链状颗粒3再次受到其他磁场的影响，而发生重新排列，这会极大地影响预定的液晶配向，如下文所述的液晶材料的分子8在梳齿9的引导下的排列取向。
最后，向基板1的显示区域内加入液晶材料。液晶材料的分子8在梳齿9的引导下，而沿着预定的方向排列。
由此，实现了非接触式的液晶配向制程。
虽然已经参考优选实施例对本发明进行了描述，但在只要不存在冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (12)

  1. 一种液晶配向方法，包括以下步骤，
    步骤一：将含有顺磁性链状颗粒的液态配向膜料涂布在基板的显示区域；
    步骤二：将所述基板置于恒定磁场中，以使所述顺磁性链状颗粒沿着所述磁场的方向稳定排列；
    步骤三：撤去所述磁场；
    步骤四：向所述基板的显示区域内加入液晶材料，所述液晶材料的分子按照所述顺磁性链状颗粒的排列方向而排列。
  2. 根据权利要求1所述的方法，其中，在所述步骤二中，还将所述液态配向膜料预固化。
  3. 根据权利要求2所述的方法，其中，在所述步骤二中，所述恒定磁场为匀强磁场。
  4. 根据权利要求3所述的方法，其中，所述顺磁性链状颗粒为带有[Cu(NH3)4]2+或[Cu(H2O)4]2+的铜络合物。
  5. 根据权利要求4所述的方法，其中，在所述步骤二中，对所述基板进行预烘烤，以将所述液态配向膜料预固化。
  6. 根据权利要求5所述的方法，其中，所述液态配向膜料还包括作为所述顺磁性链状颗粒的载液的聚酰亚胺和N-甲基吡咯烷酮。
  7. 根据权利要求6所述的方法，其中，所述预烘烤的温度在80℃到100℃之间，所述匀强磁场的磁感应强度在0.1T到1.5T之间。
  8. 根据权利要求6所述的方法，其中，所述顺磁性链状颗粒在其载液中的质量含量在0.2％到1％之间。
  9. 根据权利要求5所述的方法，其中，在所述步骤三和步骤四之间，还具有去除所述顺磁性链状颗粒的顺磁性的附加步骤。
  10. 根据权利要求7所述的方法，其中，在所述步骤三和步骤四之间，还具有去除所述顺磁性链状颗粒的顺磁性的附加步骤。
  11. 根据权利要求8所述的方法，其中，在所述步骤三和步骤四之间，还具有去除所述顺磁性链状颗粒的顺磁性的附加步骤。
  12. 根据权利要求9所述的方法，其中，在所述附加步骤中，对所述基板进 行温度高于所述预烘烤温度的强化烘烤，优选地所述强化烘烤的温度在230-250℃之间。
PCT/CN2015/081791 2015-06-04 2015-06-18 液晶配向方法 Ceased WO2016192137A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/778,201 US20170102572A1 (en) 2015-06-04 2015-06-18 Method for liquid crystal alignment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510304516.XA CN104914626B (zh) 2015-06-04 2015-06-04 液晶配向方法
CN201510304516.X 2015-06-04

Publications (1)

Publication Number Publication Date
WO2016192137A1 true WO2016192137A1 (zh) 2016-12-08

Family

ID=54083827

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/081791 Ceased WO2016192137A1 (zh) 2015-06-04 2015-06-18 液晶配向方法

Country Status (3)

Country Link
US (1) US20170102572A1 (zh)
CN (1) CN104914626B (zh)
WO (1) WO2016192137A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110596960A (zh) * 2019-09-10 2019-12-20 东莞通华液晶有限公司 一种液晶显示屏的非接触式配向方法
CN113589594B (zh) * 2021-07-19 2022-07-12 Tcl华星光电技术有限公司 显示面板及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005275193A (ja) * 2004-03-26 2005-10-06 Seiko Epson Corp 液晶装置の製造方法、電子機器
CN1818763A (zh) * 2005-02-07 2006-08-16 Lg.菲利浦Lcd株式会社 液晶显示器定向层的形成方法和形成装置
CN101359128A (zh) * 2007-08-03 2009-02-04 群康科技(深圳)有限公司 液晶面板、液晶面板的配向膜及其制造方法
TW201019016A (en) * 2008-11-03 2010-05-16 Chi Mei Optoelectronics Corp Manufacturing method of alignment film and manufacturing method of liquid crystal display panel
CN102150074A (zh) * 2008-07-14 2011-08-10 兰斯维克托公司 使用表面预设的液晶透镜

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950963B2 (ja) * 1976-05-31 1984-12-11 セイコーインスツルメンツ株式会社 液晶パネル
KR100960496B1 (ko) * 2003-10-31 2010-06-01 엘지디스플레이 주식회사 액정표시소자의 러빙방법
KR20150047398A (ko) * 2013-10-24 2015-05-04 삼성디스플레이 주식회사 표시 장치 및 이의 제조방법
CN203743090U (zh) * 2013-12-13 2014-07-30 陶克（苏州）机械设备有限公司 磁力喷射泵浦

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005275193A (ja) * 2004-03-26 2005-10-06 Seiko Epson Corp 液晶装置の製造方法、電子機器
CN1818763A (zh) * 2005-02-07 2006-08-16 Lg.菲利浦Lcd株式会社 液晶显示器定向层的形成方法和形成装置
CN101359128A (zh) * 2007-08-03 2009-02-04 群康科技(深圳)有限公司 液晶面板、液晶面板的配向膜及其制造方法
CN102150074A (zh) * 2008-07-14 2011-08-10 兰斯维克托公司 使用表面预设的液晶透镜
TW201019016A (en) * 2008-11-03 2010-05-16 Chi Mei Optoelectronics Corp Manufacturing method of alignment film and manufacturing method of liquid crystal display panel

Also Published As

Publication number Publication date
US20170102572A1 (en) 2017-04-13
CN104914626A (zh) 2015-09-16
CN104914626B (zh) 2018-12-18

Similar Documents

Publication Publication Date Title
TWI678391B (zh) 液晶配向劑、液晶配向膜及液晶顯示元件
US9904092B2 (en) Liquid crystal display panel using discotic liquid crystal to induce alignment of nematic liquid crystal and manufacturing method thereof
WO2016078238A1 (zh) 垂直配向液晶显示器及其制作方法
WO2016192137A1 (zh) 液晶配向方法
JPWO2014185410A1 (ja) 横電界駆動型液晶表示素子用液晶配向膜を有する基板の製造方法
JP2015040950A (ja) 液晶表示装置の製造方法、及び、液晶表示装置
CN108700777A (zh) 液晶取向剂、液晶取向膜和液晶表示元件
CN105176412A (zh) 一种封框胶及其固化方法、显示装置
CN105204231A (zh) 液晶面板及其制造方法
KR102115124B1 (ko) 유기 발광 다이오드 장치 및 디스플레이 장치
CN104109327B (zh) 取向膜材料及制备方法、取向膜及制备方法
KR102478693B1 (ko) 액정 광학 소자 및 액정 광학 소자의 제조 방법
US8873005B2 (en) Method for manufacturing alignment layer
JPWO2016113931A1 (ja) 非光反応性の水素結合性高分子液晶を用いた液晶配向剤、及び液晶配向膜
TWI689543B (zh) 使用光反應性的氫鍵結性高分子液晶之液晶配向劑及液晶配向膜
CN104765199B (zh) 一种配向装置及配向方法
JP2018537717A (ja) 表示パネルの作製方法及び液晶表示装置
Paley et al. Photodeposition of thin polydiacetylene films from solution that exhibit large third-order optical nonlinearities
CN104903786B (zh) 液晶取向剂、液晶取向膜及液晶显示元件
US20140104551A1 (en) Negative optical compensation assembly and method for preparing the same
CN108254974B (zh) 一种基板表面处理方法、基板及液晶显示面板
CN103087454B (zh) 一种配向膜材料及相应的液晶面板
CN105676540B (zh) 液晶显示面板的制作方法
KR100738810B1 (ko) 광 배향막 형성 장치 및 방법
CN104610544A (zh) 一种热控聚酰亚胺材料的制备方法及利用该材料制备器件的方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14778201

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15893793

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15893793

Country of ref document: EP

Kind code of ref document: A1