WO2012162916A1 - 具温度控制的液晶滴下装置 - Google Patents

具温度控制的液晶滴下装置 Download PDF

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Publication number
WO2012162916A1
WO2012162916A1 PCT/CN2011/075910 CN2011075910W WO2012162916A1 WO 2012162916 A1 WO2012162916 A1 WO 2012162916A1 CN 2011075910 W CN2011075910 W CN 2011075910W WO 2012162916 A1 WO2012162916 A1 WO 2012162916A1
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Prior art keywords
liquid crystal
temperature
container
nozzle
dropping device
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PCT/CN2011/075910
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English (en)
French (fr)
Inventor
李建邦
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/260,332 priority Critical patent/US20120305596A1/en
Publication of WO2012162916A1 publication Critical patent/WO2012162916A1/zh

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1341—Filling or closing of cells
    • G02F1/13415—Drop filling process

Definitions

  • the present invention relates to a temperature control system, and more particularly to a temperature controlled liquid crystal dropping device.
  • the liquid crystal injection method is to slowly inject the liquid crystal into the combined glass substrates by the capillary principle.
  • the disadvantage of this method is that it is very time consuming and wastes the liquid crystal material.
  • the aforementioned liquid crystal injection method has gradually been introduced by a drop-drop type (One Drop Filling, ODF) technology replaced.
  • the drop-injection technique firstly drops the liquid crystal directly onto a glass substrate through a liquid crystal dropping device, and then it is paired with another glass. This new technology can significantly save time and liquid crystal material injected into the liquid crystal.
  • the main object of the present invention is to provide a liquid crystal dropping device with temperature control, which can reduce the occurrence of uneven display of dripping patterns which may be caused by liquid crystal dropping.
  • the present invention provides a temperature controlled liquid crystal dropping device comprising:
  • liquid crystal container for storing liquid crystals
  • At least one temperature controller is disposed on the liquid crystal transport path formed by the liquid crystal container, the transport tube and the liquid crystal drip nozzle, and controls the liquid crystal temperature so that the viscosity of the liquid crystal is maintained at 7 mPa•s to 15 before dripping. Between mPa•s.
  • the liquid crystal dropping device comprises a temperature controller selectively mounted on one side of the liquid crystal container, the conveying tube or the liquid crystal dropping nozzle.
  • the liquid crystal dropping device includes first, second, and third temperature controllers respectively disposed on one side of the liquid crystal container, the conveying tube, and the liquid crystal dropping nozzle.
  • the thermostat includes a heating assembly for heating the liquid crystal in the liquid crystal container, the delivery tube or the liquid crystal dropping nozzle.
  • the temperature controller further includes a sensing unit and a control unit, wherein the sensing unit is configured to sense a liquid crystal temperature in the liquid crystal container, the conveying tube or the liquid crystal dropping nozzle And returning the temperature data to the control unit; the control unit adjusts the heating temperature of the heating assembly according to the temperature data.
  • the first, second and third temperature controllers respectively comprise a heating component for respectively heating the liquid crystal in the liquid crystal container, the conveying pipe or the liquid crystal dropping nozzle.
  • the first, second, and third temperature controllers further comprise a sensing unit and a control unit, wherein the sensing unit is configured to sense a corresponding liquid crystal container and a conveying tube. Or the liquid crystal drops the liquid crystal temperature in the nozzle, and returns the temperature data; the control unit adjusts the heating temperature of the corresponding heating component according to the temperature data.
  • the invention mainly provides a temperature controller on the liquid crystal conveying path to reduce the viscosity of the liquid crystal, reduce the impact on the alignment film when the liquid crystal drops, and thereby reduce the occurrence of unevenness of the dripping pattern.
  • Figure 1 is a schematic view showing the prior art which increases the number of drops of liquid crystal and reduces the amount of liquid crystal per drop.
  • Figure 2 is a block diagram of a first embodiment of a temperature controlled liquid crystal dropping device of the present invention.
  • FIG. 3 is a block diagram showing a second embodiment of the temperature controlled liquid crystal dropping device of the present invention.
  • Fig. 4 is a graph showing the relationship between the viscosity of liquid crystal and temperature.
  • FIG. 2 is a block diagram of a first embodiment of a liquid crystal dropping device with temperature control according to the present invention.
  • the temperature-controlled liquid crystal dropping device of the present invention comprises a liquid crystal container 10, a delivery tube 11, a liquid crystal dropping nozzle 12 and a temperature controller 13.
  • the liquid crystal container 10 is for storing liquid crystal, and the liquid crystal container 10 can be fixed on a base.
  • the transfer tube 11 is connected to the liquid crystal container 10 for transporting liquid crystal in the liquid crystal container 10.
  • the liquid crystal dropping nozzle 12 is connected to the conveying pipe 11 for discharging liquid crystal from the conveying pipe so that the liquid crystal falls onto the alignment film of a glass substrate in a drop shape.
  • the liquid crystal dropping head 12, the conveying tube 11, and the liquid crystal container 10 constitute a liquid crystal conveying path.
  • the temperature controller 13 is mounted on the liquid crystal transport path formed by the liquid crystal container 10, the transport tube 11 and the liquid crystal drip nozzle 12, and can be selectively installed in the liquid crystal container 10, the transport tube 11 or the liquid crystal. One side of the head 12 is dropped.
  • the temperature controller 13 is disposed on one side of the liquid crystal container 10 and includes a heating assembly 130 for controlling the temperature of the liquid crystal in the liquid crystal container 10 by heating.
  • the temperature controller 13 further includes a sensing unit 131 and a control unit 132.
  • the sensing unit 131 is configured to sense the temperature of the liquid crystal in the liquid crystal container 10 and return the temperature data to the control unit 132.
  • the control unit 132 adjusts the heating temperature of the heating assembly 130 according to the returned temperature data to stably control the temperature of the liquid crystal.
  • FIG. 3 is a block diagram of a second embodiment of a liquid crystal dropping device with temperature control according to the present invention.
  • the second embodiment of the present invention is similar to the first embodiment of the present invention and generally uses the same component name, but is different from the first embodiment in that the liquid crystal dropping device comprises a first thermostat 13a and a second temperature control.
  • the device 13b and the third temperature controller 13c are respectively disposed on one side of the liquid crystal container 10, the transport tube 11, and the liquid crystal dropping head 12.
  • the first thermostat 13a, the second thermostat 13b, and the third thermostat 13c respectively include a heating component 130, a sensing unit 131, and a control unit, as in the thermostat 13 of the first embodiment.
  • the heating component 130 is used to respectively heat the liquid crystal container 10, the conveying pipe 11 or the liquid crystal in the liquid crystal dropping nozzle 12;
  • the sensing unit is configured to sense the corresponding liquid crystal container 10 and the conveying pipe 11 Or the liquid crystal temperature in the liquid crystal dropping nozzle 12 is returned, and the temperature data is returned;
  • the control unit 132 receives the temperature data and adjusts the heating temperature of the corresponding heating component 130 according to the temperature data to stably control the temperature of the liquid crystal.
  • FIG. 4 is a graph showing the relationship between the viscosity of the liquid crystal and the temperature.
  • the present invention can reduce the viscosity of the liquid crystal by heating it.
  • the liquid crystal temperature is preferably controlled between room temperature and 50 degrees, or the viscosity of the liquid crystal is maintained at 7 mPa•s to 15 mPa ⁇ s (mPa•s) before dropping. between.
  • the present invention is compared with the prior art liquid crystal dropping device by increasing the amount of liquid crystal dropping and reducing the liquid crystal amount of each drop to overcome the unevenness of the dropping pattern, thereby affecting the operation accuracy and increasing the processing time of the liquid crystal injection.
  • a temperature controller on the side of the liquid crystal container, the conveying pipe or the liquid crystal dropping nozzle, the viscosity of the liquid crystal is lowered by heating, and the impact force on the alignment film on the substrate when the liquid crystal is dropped is reduced, thereby reducing the possible
  • the dropping pattern shows the occurrence of unevenness, and does not affect the operation accuracy and increase the processing time of the liquid crystal injection.

Abstract

一种具温度控制的液晶滴下装置。所述液晶滴下装置包括液晶容器（10）、输送管（11）和液晶滴下喷头（12）等元件，在这些元件上设置有温控器（13），以降低液晶在滴到基板前的黏度，减轻液晶滴下到基板时对基板上的配向膜所造成的冲击力，从而降低液晶滴下所可能造成的滴下图形显示不均的现象的发生。

Description

具温度控制的液晶滴下装置 技术领域
本发明是有关于一种温控系统，特别是有关于一种具温度控制的液晶滴下装置。
 背景技术
传统的液晶面板制造过程的液晶注入方式，是以毛细原理将液晶慢慢注入已组合的两玻璃基板之间，这种方法缺点是非常耗时且浪费液晶材料。
前述的液晶注入方式已逐渐由一种滴下式注入(One Drop Filling, ODF)技术所取代。所述滴下式注入技术是先将液晶通过液晶滴下装置直接滴在一玻璃基板上，然后才其与另一玻璃进行对组。这种新的技术可以大幅节省注入液晶的时间与液晶材料。
然而，制作某些针对液晶配向以改善视角的液晶面板时，通过所述滴下式注入技术使液晶滴下到基板上的配向膜时，配向膜受到液晶滴的冲击的影响往往会导致成品的滴下图形显示不均现象(Drop Mura Defect)的发生，而现行改善方式，如图1所示，是通过增加液晶900的滴下数量并同时降低每一滴的液晶量来克服滴下图形显示不均现象。然而，此种方式的改善程度有限，且增加液晶的滴下数量及降低每滴的液晶量将会影响所述液晶滴下装置的操作精确度，并增加液晶注入的制程时间。
故，有必要提供一种具温度控制的液晶滴下装置，以解决现有技术所存在的问题。
 技术问题
有鉴于现有技术的缺点，本发明的主要目的在于提供一种具温度控制的液晶滴下装置，可降低液晶滴下所可能造成的滴下图形显示不均现象的发生。
 技术解决方案
为达成本发明的前述目的，本发明提供一种具温度控制的液晶滴下装置，包含：
一液晶容器，用以存储液晶；
一输送管，连接所述液晶容器；
一液晶滴下喷头，连接所述输送管；及
至少一温控器，是装设于所述液晶容器、输送管及液晶滴下喷头所构成液晶输送路径上，而控制液晶温度，使液晶的黏度在滴下前维持在7 mPa•s至15 mPa•s之间。
在本发明的一实施例中，所述液晶滴下装置包含一温控器，选择性装设于所述液晶容器、输送管或是液晶滴下喷头的一侧。
在本发明的一实施例中，所述液晶滴下装置包含第一、第二及第三温控器，分别装设于所述液晶容器、输送管与液晶滴下喷头的一侧。
在本发明的一实施例中，所述温控器包含一加热组件，用以对所述液晶容器、输送管或是液晶滴下喷头内的液晶加热。
在本发明的一实施例中，所述温控器更包含一感测单元及一控制单元，所述感测单元用以感测所述液晶容器、输送管或是液晶滴下喷头内的液晶温度，并回传温度资料至控制单元；所述控制单元根据温度资料调整所述加热组件的加热温度。
在本发明的一实施例中，所述第一、第二及第三温控器分别包含一加热组件，用以分别对所述液晶容器、输送管或是液晶滴下喷头内的液晶加热。
在本发明的一实施例中，所述第一、第二及第三温控器更分别包含一感测单元及一控制单元，所述感测单元用以感测对应的液晶容器、输送管或是液晶滴下喷头内的液晶温度，并回传温度资料；所述控制单元根据温度资料调整对应的加热组件的加热温度。
 有益效果
本发明主要是于液晶输送路径上设置温控器，以降低液晶的黏度，减轻液晶滴下时对配向膜所造成的冲击，进而降低可能造成的滴下图形显示不均现象的发生。
附图说明
图1是现有技术增加液晶的滴下数量并降低每一滴的液晶量的示意图。
图2是本发明具温度控制的液晶滴下装置第一实施例的方块图。
图3是本发明具温度控制的液晶滴下装置第二实施例的方块图。
图4是液晶黏度与温度的关系特性曲线图。
 本发明的最佳实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明如下。再者，本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
请参考图2所示，图2为本发明具温度控制的液晶滴下装置第一实施例的方块图。本发明的具温度控制的液晶滴下装置包含有一液晶容器10、一输送管11、一液晶滴下喷头12及一温控器13。
所述液晶容器10是用以存储液晶，所述液晶容器10可固定于一基座上。
所述输送管11是连接所述液晶容器10，其是用来输送液晶容器10内的液晶。
所述液晶滴下喷头12是连接所述输送管11，其是用以将液晶从输送管导出，使液晶呈水滴状地落到一玻璃基板的配向膜上。所述液晶滴下喷头12、输送管11及液晶容器10即构成一液晶输送路径。
所述温控器13是装设于所述液晶容器10、输送管11及液晶滴下喷头12所构成的液晶输送路径上，可选择性装设于所述液晶容器10、输送管11或是液晶滴下喷头12的一侧。本实施例中，所述温控器13是装设于所述液晶容器10的一侧，包含一加热组件130，以通过加热来控制所述液晶容器10内的液晶的温度。再者，所述温控器13更包含一感测单元131及一控制单元132。所述感测单元131是用以感测所述液晶容器10内的液晶的温度，并回传温度资料至所述控制单元132。所述控制单元132则根据回传的温度资料调整所述加热组件130的加热温度，以稳定控制液晶的温度。
请参考图3所示，图3为本发明具温度控制的液晶滴下装置第二实施例的方块图。本发明第二实施例相似于本发明第一实施例，并大致沿用相同组件名称，但与第一实施例不同之处在于：所述液晶滴下装置包含第一温控器13a、第二温控器13b及第三温控器13c，分别装设于所述液晶容器10、输送管11与液晶滴下喷头12的一侧。与第一实施例的温控器13相同，所述第一温控器13a、第二温控器13b及第三温控器13c分别包含一加热组件130、一感测单元131及一控制单元132，其中所述加热组件130用以分别对所述液晶容器10、输送管11或是液晶滴下喷头12内的液晶加热；所述感测单元用以感测对应的液晶容器10、输送管11或是液晶滴下喷头12内的液晶温度，并回传温度资料；所述控制单元132则接受温度资料并根据温度资料调整对应的加热组件130的加热温度，以稳定控制液晶的温度。
请参考图4所示，图4是液晶黏度与温度的关系特性曲线图。从图4可知，本发明通过对液晶加温可使其黏度降低。当黏度较低的液晶滴下至配向膜时，其在配向膜上扩散的面积会较大于黏度较高的液晶，且其与配向膜的接触角较小，因此可减少配向膜所受到的冲击力，进而可降低滴下图形显示不均现象的发生。欲达预期效果，液晶温度优选是控制于室温至50度之间，又或者液晶的黏度在滴下前是维持在7毫帕•秒(mPa•s)至15毫帕•秒(mPa•s)之间。
由上述说明可知，相较于现有液晶滴下装置通过增加液晶的滴下数量并降低每一滴的液晶量来克服滴下图形显示不均现象，而影响操作精确度并增加液晶注入的制程时间，本发明通过于液晶容器、输送管或是液晶滴下喷头等元件一侧设置温控器，以加温方式降低液晶黏度，减轻液晶滴下时对基板上的配向膜所造成的冲击力，从而降低可能造成的滴下图形显示不均现象的发生，也不会影响操作精确度并增加液晶注入的制程时间。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。
 本发明的实施方式
工业实用性
序列表自由内容

Claims (8)

  1. 一种具温度控制的液晶滴下装置，其特征在于：所述液晶滴下装置包含：一液晶容器，用以存储液晶；
    一输送管，连接所述液晶容器；
    一液晶滴下喷头，连接所述输送管；及
    一温控器，是选择性装设于所述液晶容器、输送管及液晶滴下喷头所构成液晶输送路径上，而控制液晶温度于室温至50度之间，使液晶的黏度在滴下前维持在7毫帕•秒至15毫帕•秒之间。
  2. 一种具温度控制的液晶滴下装置，其特征在于：所述液晶滴下装置包含：一液晶容器，用以存储液晶；
    一输送管，连接所述液晶容器；
    一液晶滴下喷头，连接所述输送管；及
    至少一温控器，是装设于所述液晶容器、输送管及液晶滴下喷头所构成液晶输送路径上，而控制液晶温度，使液晶的黏度在滴下前维持在7毫帕•秒至15毫帕•秒之间。
  3. 如权利要求2所述的具温度控制的液晶滴下装置，其特征在于：所述液晶滴下装置包含一温控器，选择性装设于所述液晶容器、输送管或是液晶滴下喷头的一侧。
  4. 如权利要求2所述的具温度控制的液晶滴下装置，其特征在于：所述液晶滴下装置包含第一、第二及第三温控器，分别装设于所述液晶容器、输送管与液晶滴下喷头的一侧。
  5. 如权利要求3所述的具温度控制的液晶滴下装置，其特征在于：所述温控器包含一加热组件，用以对所述液晶容器、输送管或是液晶滴下喷头内的液晶加热。
  6. 如权利要求5所述的具温度控制的液晶滴下装置，其特征在于：所述温控器更包含一感测单元及一控制单元，所述感测单元用以感测所述液晶容器、输送管或是液晶滴下喷头内的液晶温度，并回传温度资料至控制单元；所述控制单元根据温度资料调整所述加热组件的加热温度。
  7. 如权利要求4所述的具温度控制的液晶滴下装置，其特征在于：所述第一、第二及第三温控器分别包含一加热组件，用以分别对所述液晶容器、输送管或是液晶滴下喷头内的液晶加热。
  8. 如权利要求7所述的具温度控制的液晶滴下装置，其特征在于：所述第一、第二及第三温控器更分别包含一感测单元及一控制单元，所述感测单元用以感测对应的液晶容器、输送管或是液晶滴下喷头内的液晶温度，并回传温度资料；所述控制单元根据温度资料调整对应的加热组件的加热温度。
PCT/CN2011/075910 2011-06-02 2011-06-20 具温度控制的液晶滴下装置 WO2012162916A1 (zh)

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