WO2014183389A1 - 稳定蓝相液晶晶体结构的方法、显示装置及制作方法 - Google Patents

稳定蓝相液晶晶体结构的方法、显示装置及制作方法 Download PDF

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WO2014183389A1
WO2014183389A1 PCT/CN2013/086359 CN2013086359W WO2014183389A1 WO 2014183389 A1 WO2014183389 A1 WO 2014183389A1 CN 2013086359 W CN2013086359 W CN 2013086359W WO 2014183389 A1 WO2014183389 A1 WO 2014183389A1
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liquid crystal
phase liquid
blue phase
carbon nanotubes
display device
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French (fr)
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郭仁炜
王建
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Beijing BOE Optoelectronics Technology Co Ltd
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Beijing BOE Optoelectronics Technology Co Ltd
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    • 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
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
    • C09K19/0275—Blue phase
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • C09K2019/521—Inorganic solid particles
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13793—Blue phases
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • Embodiments of the present invention relate to a method, a display device, and a method of fabricating a crystal structure for stabilizing a blue phase liquid crystal. Background technique
  • the blue phase liquid crystal molecule is a cubic lattice structure which is close to the crystal and has a regular molecular arrangement. In this state, the liquid crystal display is dark. When energized, the blue phase liquid crystal molecules destroy the cubic lattice structure, and the liquid crystal molecules rotate along the long axis, indicating a bright state. It has been verified by experiments that the response time of the blue phase liquid crystal from the optically isotropic state to the optical anisotropic state is less than 1 ms, which is an order of magnitude faster than that of the ordinary liquid crystal. In addition, blue phase liquid crystals have other advantages such as wide viewing angles, and are regarded as the most revolutionary next-generation flat panel display materials.
  • the blue phase liquid crystal is a phase of the cholesteric liquid crystal which is formed by adding a chiral compound to the nematic liquid crystal.
  • blue phase liquid crystals have many optical properties, they exist in a very small temperature range, which is mostly only around rc, which greatly limits the application of blue phase liquid crystal materials in various fields. Summary of the invention
  • Embodiments of the present invention provide a method, a display device, and a manufacturing method for stabilizing a blue phase liquid crystal crystal structure.
  • a method, a display device, and a manufacturing method for stabilizing a blue phase liquid crystal crystal structure By adding carbon nanotubes to a blue phase liquid crystal, the cubic lattice structure of the blue phase liquid crystal can be stabilized, and the temperature thereof is present. A wider range.
  • Embodiments of the present invention provide a method for stabilizing a blue phase liquid crystal crystal structure by adding carbon nanotubes to a blue phase liquid crystal and stirring and mixing.
  • the blue phase liquid crystal comprises a chiral compound, and the chiral compound in the blue phase liquid crystal has a mass percentage of 2% to 15%.
  • the mass percentage of the chiral compound in the blue phase liquid crystal is 2%.
  • the mass percentage of the carbon nanotubes in the mixture of the carbon nanotubes and the blue phase liquid crystal is
  • the mass percentage of the carbon nanotubes in the mixture of the carbon nanotubes and the blue phase liquid crystal is
  • An embodiment of the present invention provides a display device, including: a frame-formed array substrate and a color filter substrate; and a liquid crystal filled between the array substrate and the color filter substrate, wherein the display device is a normally black display.
  • the liquid crystal is a blue phase liquid crystal, and carbon nanotubes are mixed in the blue phase liquid crystal.
  • the blue phase liquid crystal comprises a chiral compound, and the chiral compound in the blue phase liquid crystal has a mass percentage of 2% to 15%.
  • the mass percentage of the chiral compound in the blue phase liquid crystal is 2%.
  • the mass percentage of the carbon nanotubes in the mixture of the carbon nanotubes and the blue phase liquid crystal is from 1% to 10%.
  • the mass percentage of carbon nanotubes in the mixture of carbon nanotubes and blue phase liquid crystals is 2%.
  • a common electrode and a pixel electrode are disposed on the array substrate of the display device.
  • the common electrode is located above the pixel electrode.
  • the pixel electrode is located above the common electrode.
  • the common electrode and the pixel electrode are disposed in the same layer.
  • an alignment layer is further disposed on the array substrate, and the alignment layer is a planar alignment layer; an alignment layer is disposed on the color filter substrate, and the alignment layer is a planar alignment layer.
  • the embodiment of the invention provides a method for manufacturing a display device, including:
  • a mixture including a blue phase liquid crystal and carbon nanotubes is filled between the array substrate and the color filter substrate.
  • the preparing comprises a mixture of a blue phase liquid crystal and a carbon nanotube, specifically: mixing and stirring the blue phase liquid crystal and the carbon nanotube.
  • the fabricating the array substrate comprises: forming a pixel electrode and a common electrode on the substrate.
  • the fabricating the array substrate comprises: forming a planar alignment layer on the substrate.
  • the preparing the color filter substrate comprises: forming a planar alignment layer on the substrate.
  • a method, a display device and a manufacturing method for stabilizing a blue phase liquid crystal crystal structure provided by an embodiment of the present invention, by adding carbon nanotubes in a blue phase liquid crystal, the linear structure of the carbon nanotubes has a certain anchoring force and can be stabilized
  • the cubic lattice structure of the blue phase liquid crystal makes it have a wider temperature range.
  • 1 is a schematic view showing a cubic lattice structure of a blue phase liquid crystal
  • FIG. 2 is a schematic view showing the microstructure of carbon nanotubes
  • FIG. 3 is a graph of driving voltage of a display device and transmittance of a display panel according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a liquid crystal display without voltage applied to an ADS type liquid crystal display device according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of liquid crystal display after voltage application of an ADS type liquid crystal display device according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a common electrode and a pixel electrode on an array substrate in a display device according to an embodiment of the invention. detailed description
  • Embodiments of the present invention provide a method of stabilizing a blue phase liquid crystal crystal structure.
  • carbon nanotubes are added to a blue phase liquid crystal and stirred and mixed.
  • the crystal structure of the blue phase liquid crystal is as shown in Fig. 1, which is a cubic lattice structure, and its temperature range is very small, only about 1 ° C, and the crystal structure is destroyed under other temperature conditions.
  • the nanostructure of the carbon nanotube has a linear structure, which has a certain anchoring force and can be used for Stabilizing the cubic lattice structure of the blue phase liquid crystal allows the cubic lattice structure of the blue phase liquid crystal to exist in a larger temperature range.
  • the blue phase liquid crystal is formed by adding a chiral compound to the nematic liquid crystal, wherein the content of the chiral compound cannot be too high or too low, and the blue phase liquid crystal cannot be formed too high or too low.
  • the chiral compound may be CB15, but the invention is not limited thereto, and any suitable chiral compound may be employed.
  • the chiral compound of the blue phase liquid crystal has a mass percentage of 2% to 15%.
  • the mass percentage of the chiral compound in the blue phase liquid crystal may be 2% to 10%, 5% to 15%, 7% or the like, preferably 2%.
  • the mass percentage of the chiral compound in the blue phase liquid crystal is 2% as an example for detailed description.
  • the mass percentage of the carbon nanotubes in the mixture of the carbon nanotubes and the blue phase liquid crystal is 1%-10%, for example, the mass percentage may be 5%-10%, 5%, etc. Preferably 2%. In the examples of the present invention, the mass percentage of the carbon nanotubes is 2% of the mixture of carbon nanotubes and blue phase liquid crystals as an example.
  • carbon nanotubes of the examples of the present invention for example, carbon nanotubes of 1 ⁇ m or less can be used. If the carbon nanotubes are too long, it will affect the display.
  • the length of the carbon nanotubes may be several tens to several hundreds of nanometers, preferably 100 nanometers or more and less than 1 micrometer.
  • carbon nanotubes are arranged in a network in the liquid crystal, which better anchors the alignment of the blue phase liquid crystal.
  • Embodiments of the present invention provide a display device including: a frame-formed array substrate and a color filter substrate; and a liquid crystal filled between the array substrate and the color filter substrate.
  • the display device is a normally black display device
  • the liquid crystal is a blue phase liquid crystal
  • carbon nanotubes are mixed in the blue phase liquid crystal.
  • the crystal structure of the blue phase liquid crystal is shown in Fig. 1. It is a cubic lattice structure, and its temperature range is very small, only around rc, and the crystal structure is destroyed under other temperature conditions.
  • the carbon nanotubes as shown in Fig. 2, have a linear structure and have a certain anchoring force, and can stabilize the cubic lattice structure of the blue phase liquid crystal, thereby making it suitable for a wider temperature range.
  • a carbon nanotube can stabilize the cubic lattice structure of a plurality of blue phase liquid crystals.
  • the temperature of the blue phase liquid crystal which is generally not stabilized is in the range of several degrees Celsius, and the stable temperature of the blue phase liquid crystal after the addition of the carbon nanotubes is between 40 and 50 degrees Celsius.
  • the liquid crystal display device has its light transmittance according to the applied voltage and no voltage. It is divided into NW (Normally White) type liquid crystal display device and NB (Normally Black) type liquid crystal display device.
  • NW Normally White
  • NB Normally Black
  • a common white-type liquid crystal display device such as a TN (Twist Nematic) type liquid crystal display device.
  • TN Transist Nematic
  • Black liquid crystal display devices such as VA (Vertical Alignment), ADS (Advanced-Super Dimensional Switching), and IPS (In Plane Switch) liquid crystal Display device.
  • VA Vertical Alignment
  • ADS Advanced-Super Dimensional Switching
  • IPS In Plane Switch
  • the display device provided by the embodiment of the invention can be applied to a normally black liquid crystal display device.
  • an ADS liquid crystal display device will be described in detail as an example.
  • the ADS type liquid crystal display device uses a fringe electric field to induce liquid crystal display, and includes an array substrate 20, a color filter substrate 10, and a blue phase liquid crystal 30 filled between the array substrate 20 and the color filter substrate 10 and mixed in the blue phase liquid crystal 30. Carbon nanotubes 40.
  • the array substrate 20 includes: a pixel electrode 21 and a common electrode 22. When the display panel is not energized, as shown in FIG. 4, the blue phase liquid crystal has a cubic lattice structure, and the display panel is opaque to display a dark state; when the display panel is energized, as shown in FIG.
  • each of the carbon nanotubes can stabilize a plurality of blue phase liquid crystal lattice structures.
  • the display device provided by the embodiment of the invention adopts a blue phase liquid crystal, and the blue crystal liquid crystal can be used for display by mixing the carbon nanotubes in the blue phase liquid crystal to stabilize the cubic lattice structure of the blue phase liquid crystal, and the blue phase
  • the liquid crystal is used for a display device, which has a fast response speed and a wider viewing angle.
  • the liquid crystal display device controls the light transmittance through the liquid crystal using an electric field to display an image.
  • the liquid crystal display device is roughly classified into a vertical electric field drive type and a horizontal electric field drive type in accordance with the electric field direction in which the liquid crystal is driven.
  • the vertical electric field drive type liquid crystal display device is provided with a common electrode and a pixel electrode on the upper and lower substrates, and a vertical electric field is formed between the common electrode and the pixel electrode to drive the liquid crystal, such as a VA type liquid crystal display device.
  • a horizontal electric field driven liquid crystal display device is provided with a common electrode and a pixel electrode on a lower substrate
  • a pole forms a horizontal electric field between the common electrode and the pixel electrode to drive a liquid crystal such as an ADS type, IPS type liquid crystal display device.
  • the display device is provided with a common electrode and a pixel electrode on the array substrate. That is, the display device is a horizontal electric field drive type liquid crystal display device. Further, a common electrode on the array substrate is located above the pixel electrode. As shown in FIG. 4 and FIG. 5, the common electrode 22 on the array substrate 20 is located above the pixel electrode 21. For example, when the common electrode is located above the pixel electrode, the common electrode is a strip-like structure having slits, and the pixel electrode is a planar plate-like structure.
  • the "upper” and “lower” are based on the order of the layers on the array substrate, for example, the “below” in the “below” and the “on” in the later.
  • the pixel electrode may also be disposed on the upper surface of the common electrode, and the pixel electrode is located above the common electrode, and the pixel electrode is a strip structure having a slit, and the common electrode is a flat plate. Structure.
  • the common electrode is located above the pixel electrode as shown in FIG. 4 and FIG.
  • the common electrode is disposed in the same layer as the pixel electrode. For example, as shown in FIG. 6, when the common electrode and the pixel electrode are disposed in the same layer, the common electrode 22 and the pixel electrode 21 are opposed to each other, and a horizontal electric field is formed between the common electrode and the pixel electrode to drive the liquid crystal deflection. display.
  • the array substrate is further provided with an alignment layer 23, and the alignment layer 23 is a planar alignment layer; the color filter substrate is provided with an alignment layer 13, and the alignment layer 13 is a planar alignment layer.
  • an alignment layer is disposed on the array substrate and the color filter substrate, and the two display devices in the embodiment of the present invention are on the array substrate and the color filter substrate.
  • the upper alignment layer is a planar alignment layer, wherein the alignment layer affects the anchoring force of the liquid crystal.
  • the mass percentage of the chiral compound of the blue phase liquid crystal is 2%-15%, for example, the mass percentage may be 2%-10%, 5%-15%, 7%, etc. Preferably 2%.
  • the mass percentage of the chiral compound of the blue phase liquid crystal is 2% as an example for detailed description.
  • the mass percentage of the carbon nanotubes in the mixture of the carbon nanotubes and the blue phase liquid crystal is 1%-10%, for example, the mass percentage may be 5%-10%, 5%, etc. Preferably 2%.
  • the driving voltage is relatively large due to the anchoring action of the carbon nanotubes.
  • 3 is a graph showing the driving voltage of the display device obtained by experiments and the transmittance of the display panel. As shown in FIG. 3, the driving voltage Vop of the display device is close to 11.5V, and During the application of the voltage, the transmittance of the liquid crystal panel increases as the voltage increases, and after a certain peak value, decreases as the voltage increases.
  • the transmittance decreases accordingly.
  • the maximum transmission rate is close to 10%.
  • the mass percentage of the carbon nanotubes is 2% of a mixture of carbon nanotubes and blue phase liquid crystals.
  • Figure 3 in the embodiment of the present invention is based on the mass percentage of the carbon nanotubes being 2% of the mixture of carbon nanotubes and blue phase liquid crystal.
  • the embodiment of the invention provides a method for manufacturing a display device, including:
  • Step S101 preparing a mixture comprising a blue phase liquid crystal and carbon nanotubes.
  • preparing a mixture comprising a blue phase liquid crystal and carbon nanotubes comprises: mixing and stirring a blue phase liquid crystal and a carbon nanotube. Controlling the mixing ratio of the blue phase liquid crystal and the carbon nanotubes, so that the mass percentage of the carbon nanotubes is 1%-10% of the mixed blue phase liquid crystal, for example, the mass percentage may be 5%-10 %, 5%, etc. 4, especially 2%.
  • Step S102 fabricating an array substrate and a color filter substrate.
  • fabricating the array substrate comprises: forming a pixel electrode and a common electrode on the substrate. That is, a horizontal electric field is formed by providing a common electrode and a pixel electrode on the array substrate.
  • fabricating the array substrate comprises: forming a planar alignment layer on the substrate.
  • a film is formed on the substrate by deposition or the like, and the film may be a PI (Polyimide) film, and the film is rubbed to form a groove on the surface of the PI film, and the rubbed PI film is formed. It can be called an orientation layer.
  • the array substrate includes not only the common electrode, the pixel electrode, and the alignment layer, but also other thin film or layer structures such as a gate metal layer and a gate insulating layer.
  • the alignment layer is generally located on the uppermost layer of the array substrate, and other thin film or layer structures including a gate metal layer, a gate insulating layer, a common electrode, and a pixel electrode are formed on the substrate before the alignment layer is formed.
  • the film or layer structure on the array substrate is the same as the film or layer structure on the conventional array substrate, and thus will not be described herein.
  • the preparing the color filter substrate comprises: forming a planar alignment layer on the substrate.
  • the film substrate further includes other film or layer structures.
  • the color film substrate further includes a color film layer and a black matrix film layer, and the planar alignment layer on the color film substrate is disposed on the uppermost surface of the color film substrate.
  • the formation of the planar alignment layer on the color filter substrate is the same as the method of forming the planar alignment layer on the array substrate, and will not be described herein.
  • Step S103 filling a mixture including the blue phase liquid crystal and the carbon nanotubes between the array substrate and the color filter substrate.
  • a mixture comprising carbon nanotubes and a blue phase liquid crystal is subjected to a defoaming treatment in a defoaming machine, and is further encapsulated between the array substrate and the color filter substrate by a vacuum-to-cassette method.
  • the method and the step of encapsulating the mixture of the carbon nanotubes and the blue phase liquid crystal on the array substrate and the color filter substrate are the same as the method for packaging the nematic liquid crystal in the prior art, and the embodiments of the present invention are not described herein. There is technology.

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Abstract

本发明的实施例提供了一种稳定蓝相液晶晶体结构的方法、显示装置及制作方法该稳定蓝相液晶晶体结构的方法包括向蓝相液晶中添加碳纳米管，并搅拌混合。本发明适用于蓝相液晶显示装置的制造。

Description

稳定蓝相液晶晶体结构的方法、 显示装置及制作方法 技术领域
本发明的实施例涉及一种稳定蓝相液晶晶体结构的方法、 显示装置及制 作方法。 背景技术
近年来， 为提高液晶显示器的显示质量， 具有快速应答特性和宽视角特 性的蓝相液晶材料渐渐受到重视。
如图 1所示，蓝相液晶分子是一种立方晶格结构，这种结构接近于晶体， 分子排列规整， 在这个状态下， 液晶显示呈暗态。 当在通电的情况下， 蓝相 液晶分子破坏立方晶格结构， 液晶分子沿长轴发生旋转， 显示呈亮态。 经试 验证明， 蓝相液晶从光学各向同性态转变为光学各向异性态的响应时间不到 1ms, 比普通液晶的响应速率快了一个数量级。 此外， 蓝相液晶还具有宽视 角等其他优点， 被誉为是最具有革命性的下一代平板显示材料。
蓝相液晶作为胆 相液晶的一种相态， 其是在向列液晶中加手性化合物 形成的。 虽然蓝相液晶具有许多光学特性， 但其存在的温度范围非常小， 大 概只在 rc左右， 大大限制了蓝相液晶材料在各个领域的应用。 发明内容
本发明的实施例提供一种稳定蓝相液晶晶体结构的方法、 显示装置及制 作方法， 通过在蓝相液晶中添加碳纳米管， 可以稳定蓝相液晶的立方晶格结 构， 使其存在的温度范围更广。
为达到上述目的， 本发明的实施例采用如下技术方案：
本发明实施例提供了一种稳定蓝相液晶晶体结构的方法， 其是向蓝相液 晶中添加碳纳米管， 并搅拌混合。
可选的， 所述蓝相液晶中包括手性化合物， 所述蓝相液晶中的手性化合 物的质量百分含量为 2%-15%。
可选的， 所述蓝相液晶中的手性化合物的质量百分含量为 2%。 可选的， 碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量为
1%-10%。
可选的， 碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量为
2%。
本发明实施例提供了一种显示装置， 包括： 对盒成型的阵列基板和彩膜 基板以及填充在所述阵列基板和彩膜基板之间的液晶， 其中， 所述显示装置 为常黑型显示装置， 所述液晶为蓝相液晶， 且所述蓝相液晶中混合有碳纳米 管。
可选的， 所述蓝相液晶中包括手性化合物， 所述蓝相液晶中的手性化合 物的质量百分含量为 2%-15%。
可选的， 所述蓝相液晶中的手性化合物的质量百分含量为 2%。
可选的， 碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量为 1%-10%。
可选的， 碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量为 2%。
可选的， 显示装置的阵列基板上设置有公共电极和像素电极。
可选的， 所述公共电极位于所述像素电极的上面。
可选的， 所述像素电极位于所述公共电极的上面。
可选的， 所述公共电极和所述像素电极同层设置。
可选的，所述阵列基板上还设置有取向层，且所述取向层为平面取向层； 所述彩膜基板上设置有取向层， 且所述取向层为平面取向层。
本发明实施例提供了一种显示装置的制作方法， 包括：
制备包括蓝相液晶和碳纳米管的混合物；
制作阵列基板以及彩膜基板；
将包括蓝相液晶和碳纳米管的混合物填充在阵列基板和彩膜基板之间。 可选的， 所述制备包括蓝相液晶和碳纳米管的混合物具体为： 将蓝相液 晶和碳纳米管混合并搅拌。
可选的， 所述制作阵列基板包括： 在基板上形成像素电极和公共电极。 可选的， 所述制作阵列基板包括： 在基板上形成平面取向层。
可选的， 所述制备彩膜基板包括： 在基板上形成平面取向层。 本发明实施例提供的一种稳定蓝相液晶晶体结构的方法、 显示装置及制 作方法， 通过在蓝相液晶中添加碳纳米管， 所述碳纳米管的线性结构具有一 定锚定力， 可以稳定蓝相液晶的立方晶格结构， 使其存在的温度范围更广。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为蓝相液晶的立方晶格结构示意图；
图 2为碳纳米管的微观结构示意图；
图 3为本发明实施例提供的显示装置的驱动电压与显示面板的透过率的 曲线图；
图 4为本发明实施例提供的 ADS型液晶显示装置未加电压的液晶显示 示意图；
图 5为本发明实施例提供的 ADS型液晶显示装置加电压后的液晶显示 示意图；
图 6为本发明实施例提供的一种显示装置中阵列基板上公共电极和像素 电极示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明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发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 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， 都属于本发明保护的范围。
本发明实施例提供了一种稳定蓝相液晶晶体结构的方法。 在该方法中， 向蓝相液晶中添加碳纳米管， 并搅拌混合。
需要说明的是， 蓝相液晶的晶体结构如图 1所示， 是立方晶格结构， 其 存在的温度范围非常小， 仅在 1 °C左右， 其他温度条件下晶体结构被破坏。 如图 2所示， 碳纳米管的纳米结构为线性结构， 其具有一定锚定力， 可用于 稳固蓝相液晶的立方晶格结构， 可以使蓝相液晶的立方晶格结构存在于更大 的温度范围内。
需要说明的是,蓝相液晶是通过在向列相液晶中添加手性化合物形成的， 其中手性化合物的含量不能太高和太低，太高或者太低都形成不了蓝相液晶。 例如， 手性化合物可以为 CB15 , 但本发明不限于此， 而是可以采用任何合 适的手性化合物。 例如， 蓝相液晶的手性化合物的质量百分含量为 2%-15%。 例如，所述蓝相液晶中手性化合物的质量百分含量可以为 2%-10%, 5%-15%, 7%等， 优选 2%。 本发明实施例中均以所述蓝相液晶中手性化合物的质量百 分含量为 2%为例进行详细说明。
可选的， 所述碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量 为 1%-10%, 例如， 该质量百分含量可以为 5%-10%, 5%等， 优选 2%。 本发 明实施例中均以所述碳纳米管的质量百分含量为碳纳米管和蓝相液晶的混合 物的 2%为例进行详细说明。
对于本发明实施例的碳纳米管， 例如可以使用 1微米以下的碳纳米管。 如果碳纳米管太长， 则会影响显示效果。 例如， 碳纳米管的长度可以为几十 至几百纳米， 优选 100纳米以上且小于 1微米。
例如， 碳纳米管在液晶中是呈网状排列的， 这样能够更好地锚定蓝相液 晶的排列。
本发明实施例提供了一种显示装置， 包括： 对盒成型的阵列基板和彩膜 基板以及填充在所述阵列基板和彩膜基板之间的液晶。 例如， 所述显示装置 为常黑型显示装置， 所述液晶为蓝相液晶， 且所述蓝相液晶中混合有碳纳米 管。
蓝相液晶的晶体结构如图 1所示， 是立方晶格结构， 其存在的温度范围 非常小， 仅在 rc左右， 其他温度条件下晶体结构被破坏。 所述碳纳米管， 如图 2所示， 其为线性结构， 具有一定锚定力， 能稳定蓝相液晶的立方晶格 结构， 进而可以使其适用于更大的温度范围。 例如， 一条碳纳米管可以稳定 多个蓝相液晶的立方晶格结构。 例如， 一般不加稳定材料的蓝相液晶的温度 范围在几摄氏度之间， 加入碳纳米管后蓝相液晶的稳定温度在 40-50摄氏度 之间。
需要说明的是， 液晶显示装置根据加电压和不加电压其光的透过性将其 分为 NW ( Normally White, 常白）型液晶显示装置和 NB ( Normally Black, 常黑）型液晶显示装置。 例如， 常白液晶显示装置是在不施加电压时， 液晶 透光， 显示亮的画面； 施加电压时， 液晶不透光， 显示暗的画面。 常见的常 白型液晶显示装置如 TN ( Twist Nematic, 扭曲向列）型液晶显示装置。 常黑 型液晶显示装置是在不施加电压时， 液晶不透光， 显示暗的画面； 施加电压 时， 液晶透光， 显示亮的画面。 常见的常黑型液晶显示装置如： VA ( Vertical Alignment,多畴垂直取向 )型、 ADS ( Advanced-Super Dimensional Switching, 高级超维场开关）型以及 IPS ( In Plane Switch, 横向电场效应）型液晶显示 装置。 本发明实施例提供的所述显示装置可以适用于常黑型液晶显示装置。
例如， 如图 4、 图 5所示， 以 ADS型液晶显示装置为例进行详细说明，
ADS型液晶显示装置是利用边缘电场诱导液晶进行显示，其中包括阵列基板 20、 彩膜基板 10以及填充于阵列基板 20和彩膜基板 10之间的蓝相液晶 30 以及混合在蓝相液晶 30中的碳纳米管 40。 阵列基板 20包括： 像素电极 21 和公共电极 22。 当显示面板不通电时， 如图 4所示， 蓝相液晶呈立方晶格结 构， 显示面板不透光， 显示暗态； 当显示面板通电时， 如图 5所示， 像素电 极 21和公共电极 22形成边缘电场， 蓝相液晶的立方晶格结构被电场破坏， 液晶分子发生偏转， 实现显示效果。 当撤去电场之后， 由于碳纳米管对液晶 分子具有锚定作用， 液晶分子又会恢复到通电之前的蓝相液晶的排布状态， 即如图 4所示的状态。 需要说明的是， 如图 4、 图 5所示， 每一个碳纳米管 可以稳定多个蓝相液晶晶格结构。
对于 IPS型以及 VA型等其他常黑型液晶显示装置， 其显示原理与 ADS 型液晶显示装置的显示原理相同， 在这里就不作赘述。
本发明实施例提供的显示装置， 所述显示装置采用蓝相液晶， 并通过在 蓝相液晶中混合碳纳米管稳固蓝相液晶的立方晶格结构， 使得蓝相液晶可用 于显示， 且蓝相液晶用于显示装置， 其响应速度快， 视角更宽。
液晶显示装置利用电场通过液晶控制光透性以显示图像。 根据驱动液晶 的电场方向， 将液晶显示装置大致分为垂直电场驱动型和水平电场驱动型。 垂直电场驱动型液晶显示装置在上下基板上相对设置公共电极和像素电极， 在所述公共电极和像素电极之间形成垂直的电场以驱动液晶， 如 VA型液晶 显示装置。 水平电场驱动型液晶显示装置在下基板上设置公共电极和像素电 极， 在公共电极和像素电极之间形成水平的电场以驱动液晶如 ADS型、 IPS 型液晶显示装置。
例如， 所述显示装置在阵列基板上设置有公共电极和像素电极。 即所述 显示装置为水平电场驱动型液晶显示装置。 进一步的， 所述阵列基板上的公 共电极位于所述像素电极的上面。 如图 4、 图 5所示， 阵列基板 20上公共电 极 22位于所述像素电极 21的上面。 例如， 当所述公共电极位于所述像素电 极的上面， 则所述公共电极为具有狭缝的条状结构， 所述像素电极为平面的 板状结构。 需要说明的是， 本发明实施例中， 所述 "上" "下" 以制作阵列 基板上各层的先后顺序为依据，例如在先制作的在"下"，在后制作的在 "上"。 当然， 所述像素电极也可以设置在所述公共电极的上面， 且所述像素电极位 于所述公共电极的上面， 则像素电极为具有狭缝的条状结构， 所述公共电极 为平面的板状结构。 本发明实施例仅以如图 4、 图 5所示的， 公共电极位于 像素电极的上面为例进行详细说明。 可选的， 所述公共电极与像素电极同层 设置。 例如， 如图 6所示， 当所述公共电极和像素电极同层设置时， 公共电 极 22和像素电极 21成相对的梳状， 在公共电极和像素电极之间形成水平电 场以驱动液晶偏转进行显示。
可选的， 所述阵列基板上还设置有取向层 23, 且所述取向层 23为平面 取向层； 所述彩膜基板上设置有取向层 13, 所述取向层 13为平面取向层。 需要说明的是，无论是对于 ADS型或者 IPS型液晶显示装置，其阵列基板以 及彩膜基板上均设置有取向层， 且本发明实施例中所述两种显示装置在阵列 基板和彩膜基板上的取向层为平面取向层， 其中所述取向层影响液晶的锚定 力。
可选的， 所述蓝相液晶的手性化合物的质量百分含量为 2%-15%, 例如， 该质量百分含量可以为 2%-10%, 5%-15%, 7%等， 优选 2%。 本发明实施例 中以所述蓝相液晶的手性化合物的质量百分含量为 2%为例进行详细说明。
可选的， 所述碳纳米管和蓝相液晶的混合物中碳纳米管的质量百分含量 为 1%-10%, 例如， 该质量百分含量可以为 5%-10%, 5%等， 优选 2%。 需要 说明的是， 在蓝相液晶中添加碳纳米管之后， 由于碳纳米管的锚定作用， 驱 动电压相对较大。 图 3为通过实验获得的显示装置的驱动电压与显示面板的 透过率的曲线图。 如图 3所示， 显示装置的驱动电压 Vop接近 11.5V, 且在 施加电压的过程中， 液晶面板的透过率随着电压的增大而增大， 达到一定峰 值之后， 随着电压的增大而减小。 且其随着电压的减小， 透过率相应降低。 最大透过率接近 10%左右。 例如， 所述碳纳米管的质量百分含量为碳纳米管 和蓝相液晶的混合物的 2%。 本发明实施例中的附图 3以所述碳纳米管的质 量百分含量为碳纳米管和蓝相液晶的混合物的 2%为基准得出。
本发明实施例提供了一种显示装置的制作方法包括：
步骤 S101、 制备包括蓝相液晶和碳纳米管的混合物。
例如， 制备包括蓝相液晶和碳纳米管的混合物包括： 将蓝相液晶和碳纳 米管混合并搅拌。 控制蓝相液晶和碳纳米管的混合比例， 使得所述碳纳米管 的质量百分含量为混合后的蓝相液晶的 1%-10%, 例如， 该质量百分含量可 以为 5%-10%, 5%等， 4尤选 2%。
步骤 S102、 制作阵列基板以及彩膜基板。
当然， 制作阵列基板和彩膜基板的步骤也可以是在步骤 S101 之前或者 与所述步骤 S101 同时进行。 且制作阵列基板包括： 在基板上形成像素电极 和公共电极。即通过在阵列基板上设置公共电极和像素电极，形成水平电场。 可选的， 制作阵列基板包括： 在基板上形成平面取向层。 例如， 在基板上通 过沉积等方式形成薄膜， 所述薄膜可以是 PI ( Polyimide, 聚酰亚胺）薄膜， 再对所述薄膜进行摩擦， 在 PI薄膜表面形成沟槽,经摩擦后的 PI薄膜可以称 为取向层。 取向层上的沟槽影响液晶的锚定力。 需要说明的是， 与现有的阵 列基板相同， 阵列基板上不仅包括上述公共电极、 像素电极以及取向层， 其 还包括栅金属层、 栅绝缘层等其他薄膜或层结构。 例如， 取向层一般位于阵 列基板的最上面一层， 则在形成所述取向层之前， 基板上还形成有包括栅金 属层、 栅绝缘层、 公共电极以及像素电极等其他薄膜或层结构。 本发明实施 例中， 所述阵列基板上的薄膜或层结构与现有的阵列基板上的薄膜或层结构 相同， 故在此就不作赘述。
可选的， 所述制备彩膜基板包括： 在基板上形成平面取向层。 当然， 彩 膜基板上还包括其他薄膜或层结构， 例如彩膜基板还包括彩色膜层以及黑矩 阵膜层等， 且彩膜基板上的平面取向层设置在彩膜基板的最上面。 例如， 在 彩膜基板上形成平面取向层与在阵列基板上形成平面取向层的方法相同， 在 此就不作赘述。 步骤 S103、将包括蓝相液晶和碳纳米管的混合物填充在阵列基板和彩膜 基板之间。
例如， 将包括碳纳米管和蓝相液晶的混合物在脱泡机中进行脱泡处理， 再通过真空对盒的方法经其封装在阵列基板和彩膜基板之间。 例如， 将包括 碳纳米管和蓝相液晶的混合物封装在阵列基板和彩膜基板的方法和步骤与现 有技术中封装向列相液晶的方法相同， 本发明实施例不作赘述， 只需参照现 有技术即可。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
I、 一种稳定蓝相液晶晶体结构的方法， 其中， 向蓝相液晶中添加碳纳米 管， 并搅拌混合。
2、根据权利要求 1所述的方法，其中，所述蓝相液晶中包括手性化合物， 所述蓝相液晶中的所述手性化合物的质量百分含量为 2%-15%。
3、根据权利要求 2所述的方法， 其中， 所述蓝相液晶中的手性化合物的 质量百分含量为 2%。
4、 根据权利要求 1-3任一项所述的方法， 其中， 碳纳米管和蓝相液晶的 混合物中碳纳米管的质量百分含量为 1%-10%。
5、根据权利要求 4所述的方法， 其中， 所述碳纳米管和蓝相液晶的混合 物中碳纳米管的质量百分含量为 2%。
6、 一种显示装置， 包括： 对盒成型的阵列基板和彩膜基板以及填充在所 述阵列基板和彩膜基板之间的液晶，其中，所述显示装置为常黑型显示装置， 所述液晶为蓝相液晶， 且所述蓝相液晶中混合有碳纳米管。
7、根据权利要求 6所述的显示装置， 其中， 所述蓝相液晶中包括手性化 合物， 所述蓝相液晶中的所述手性化合物的质量百分含量为 2%-15%。
8、根据权利要求 7所述的显示装置， 其中， 所述蓝相液晶中的手性化合 物的质量百分含量为 2%。
9、 根据权利要求 6-8任一项所述的显示装置， 其中， 碳纳米管和蓝相液 晶的混合物中碳纳米管的质量百分含量为 1%-10%。
10、 根据权利要求 9所述的显示装置， 其中， 所述碳纳米管和蓝相液晶 的混合物中碳纳米管的质量百分含量为 2%。
II、 根据权利要求 6-10任一项所述的显示装置， 其中， 显示装置的阵列 基板上设置有公共电极和像素电极。
12、根据权利要求 11所述的显示装置， 其中， 所述公共电极位于所述像 素电极的上面。
13、根据权利要求 11所述的显示装置， 其中， 所述像素电极位于所述公 共电极的上面。
14、根据权利要求 11所述的显示装置， 其中， 所述公共电极和所述像素 电极同层设置。
15、 根据权利要求 6-14任一项所述的显示装置， 其中， 所述阵列基板上 设置有取向层，且所述取向层为平面取向层；所述彩膜基板上设置有取向层， 且所述取向层为平面取向层。
16、 一种显示装置的制作方法， 包括：
制备包括蓝相液晶和碳纳米管的混合物；
制作阵列基板以及彩膜基板；
将包括蓝相液晶和碳纳米管的混合物填充在阵列基板和彩膜基板之间。
17、根据权利要求 16所述的制作方法， 其中， 所述制备包括蓝相液晶和 碳纳米管的混合物包括： 将蓝相液晶和碳纳米管混合并搅拌。
18、 根据权利要求 16或 17所述的制作方法， 其中， 所述制作阵列基板 包括： 在基板上形成像素电极和公共电极。
19、 根据权利要求 16-18任一项所述的制作方法， 其中， 所述制作阵列 基板包括： 在基板上形成平面取向层。
20、 根据权利要求 16-19任一项所述的制作方法， 其中， 所述制作彩膜 基板包括： 在基板上形成平面取向层。
PCT/CN2013/086359 2013-05-13 2013-10-31 稳定蓝相液晶晶体结构的方法、显示装置及制作方法 Ceased WO2014183389A1 (zh)

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CN106753429A (zh) * 2016-12-30 2017-05-31 深圳市华星光电技术有限公司 一种用于蓝相液晶中的碳点材料及蓝相液晶组合物
CN107502372A (zh) * 2017-08-15 2017-12-22 广东工业大学 一种蓝相液晶复合材料及其制备方法
CN109988572B (zh) * 2019-04-09 2022-03-25 湘潭大学 一种固态发光的碳化聚合物点液晶的制备方法
CN116909066B (zh) * 2023-08-01 2025-12-26 河北工业大学 高抗静电放电能力的扭曲向列相液晶盒及其制造方法

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