WO2015032178A1 - 膜层铺设装置及使用该装置的膜层铺设方法 - Google Patents

膜层铺设装置及使用该装置的膜层铺设方法 Download PDF

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Publication number
WO2015032178A1
WO2015032178A1 PCT/CN2014/070859 CN2014070859W WO2015032178A1 WO 2015032178 A1 WO2015032178 A1 WO 2015032178A1 CN 2014070859 W CN2014070859 W CN 2014070859W WO 2015032178 A1 WO2015032178 A1 WO 2015032178A1
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Prior art keywords
film layer
film
substrate
layer material
heater
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PCT/CN2014/070859
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English (en)
French (fr)
Inventor
程全
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深圳市华星光电技术有限公司
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Priority to US14/647,098 priority Critical patent/US20160256892A1/en
Publication of WO2015032178A1 publication Critical patent/WO2015032178A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007After-treatment
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10Deposition of organic active material
    • H10K71/12Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H10K71/135Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
    • 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

Definitions

  • the present invention relates to a film layer laying technique, and more particularly to a film layer laying device and method for improving the uniformity of a film layer.
  • the alignment film liquid is dripped on the glass substrate by the inkjet technique, and then the surface tension of the alignment film liquid itself is diffused and then connected to form a film.
  • uneven diffusion may occur, resulting in poor uniformity of the alignment film thickness, which affects the optical quality of the display panel.
  • a film layer laying apparatus including an ink jet, a carrier plate, and a heater.
  • the carrier plate is used to carry a substrate on which a film layer needs to be laid.
  • the inkjet sprays a film layer material on the substrate at a predetermined amount of spray and a step rate.
  • the heater heats the film material to a predetermined temperature range during spraying of the film layer material to reduce diffusion unevenness caused by a difference in surface tension of the film material.
  • the heater is disposed in the carrier plate and transfers heat to the film material by heating the substrate.
  • the inkjet device includes an accommodating cavity for accommodating the film layer material and an inkjet head for ejecting the film layer material on the substrate.
  • the heater may also be disposed on the accommodating cavity or the inkjet head of the inkjet to directly heat the film material.
  • the electrode disposed on the display area of the first substrate is a solidified electrode.
  • One end of the curing electrode is connected to a curing circuit located in the non-display area. The other end extends into the display region to be in contact with the liquid crystal molecules.
  • the accommodating cavity extends in the first direction and translates in a second direction perpendicular to the first direction during spraying.
  • the inkjet heads are arranged at predetermined intervals along the extending direction of the accommodating cavity.
  • the receiving cavity extends in the first direction.
  • the inkjet remains stationary and the carrier plate translates in a second direction that is perpendicular to the first direction.
  • the film layer material is an alignment film material of liquid crystal molecules.
  • the present invention also provides a film layer laying method, which comprises the following steps:
  • the film material droplets are diffused onto the substrate to form a film.
  • the provided substrate is cleaned to reduce particulate impurities on the surface of the substrate before forming the droplets of the film material.
  • the preset temperature is in a range of greater than or equal to 10 degrees Celsius and less than or equal to 60 degrees Celsius.
  • the film layer material is an alignment film material of liquid crystal molecules.
  • the film layer laying device provided by the present invention and the film layer laying method using the same reduce the surface tension of the film material molecules by heating the film layer material to a preset temperature during the process of spraying the film layer material, thereby The film will spread more evenly.
  • FIG. 1 is a schematic structural view of a film layer laying device according to an embodiment of the present invention.
  • FIG. 2 is a flow chart showing the steps of a method for laying a film layer according to an embodiment of the present invention.
  • the film layer laying apparatus 1 includes an inkjet 10, a carrier plate 12, and a heater 14.
  • the carrier plate 12 is used to carry the substrate 2 on which the film layer needs to be laid.
  • the inkjet device 10 sprays the film material 3 on the substrate 2 in accordance with a predetermined amount of spraying and a step rate.
  • the heater 14 The film layer material 3 is heated to a preset temperature range during the spraying of the film layer material 3 to reduce diffusion unevenness caused by the difference in surface tension of the film layer material 3.
  • the film layer material 3 is an alignment film of liquid crystal molecules.
  • the substrate 2 is a transparent glass substrate.
  • the inkjet unit 10 includes a housing chamber 100 and an inkjet head 102.
  • the accommodating cavity 100 is for accommodating the film material 3.
  • the accommodating chamber 100 extends in the first direction A and translates in a second direction B perpendicular to the first direction A during spraying.
  • the ink jet heads 102 are arranged at predetermined intervals along the extending direction of the accommodating chamber 100.
  • the film layer material 3 is formed into droplets by the ink jet head 102 and then sprayed on the substrate 2.
  • the carrier board 12 is a flat panel having a larger area than the substrate 2.
  • the carrier plate 12 is translatable in the second direction B. Therefore, during the spraying of the film material 3, the ink jet 10 can also be held stationary to move the carrier 12 in the second direction B to form an array of droplets of the film material 3 on the substrate 2.
  • the heater 14 may be a resistance wire heater that directly contacts heat transfer, a non-contact electromagnetic wave heater, an ultrasonic heater, or an infrared heater.
  • the heater 14 is disposed in the carrier plate 12 and transfers heat to the film material 3 by heating the substrate 2.
  • a temperature detector (not shown) is further disposed on the carrier plate 12 to monitor the temperature of the film material 3.
  • the heater 14 may also be disposed on the receiving chamber 100 of the ink jettor 10 or the ink jet head 102 to directly heat the film material 3.
  • a method for laying a film layer includes the following steps: Step S11, providing a substrate 2, which may be a color filter substrate or a thin film transistor substrate.
  • Step S12 the substrate 2 is cleaned to reduce particulate impurities on the surface of the substrate 2, thereby reducing the influence of the particulate impurities on the surface tension distribution of the film material 3.
  • Step S13 forming a film layer droplet on the substrate 2.
  • the film layer material 3 is formed on the substrate 2 in an array after being formed into droplets by the ink jet head 102.
  • step S14 the film material 3 on the substrate 2 is heated to a preset temperature.
  • F M -0.145t - 0.00024t 2
  • F the surface tension of the film material 3
  • M the intermolecular force of the film material 3
  • t Celsius temperature. Therefore, the surface tension of the film material 3 depends on the temperature, and the surface tension decreases as the temperature increases, so that the film layer spreads more uniformly.
  • the temperature of the film material 3 should be controlled within a range of greater than or equal to 10 degrees Celsius and less than or equal to 60 degrees Celsius.
  • Step S15 the film material 3 droplets are diffused on the substrate 2 to form a film, and heated to a preset temperature.
  • the film material 3 droplets are diffused into a film by the surface tension.
  • the film layer laying device 1 and the film layer laying method using the same according to the present invention reduce the film layer material 3 by heating the film layer material 3 to a preset temperature during the process of spraying the film layer material 3.
  • the surface tension causes the film to spread more evenly.

Abstract

一种膜层铺设装置(1),其包括喷墨器(10)、承载板(12)及加热器(14)。承载板(10)用于承载需要铺设膜层的基板(2)。喷墨器(10)按照预设的喷涂量及步进速率在基板(2)上喷涂膜层材料(3)。加热器(14)在喷涂膜层材料(3)的过程中将膜层材料(3)加热至预设温度范围以降低膜层材料(3)的表面张力差异而造成的扩散不均。还提供一种使用该装置(1)的膜层铺设方法。

Description

膜层铺设装置及使用该装置的膜层铺设方法
技术领域
本发明涉及膜层铺设技术, 尤其涉及一种用于改善膜层均勾性的膜层铺设 装置及方法。
背景技术 说
现有的显示面板制程中大多是采用喷墨技术将配向膜液体滴在玻璃基板 上, 再利用配向膜液体自身的表面张力扩散后连接成膜。 然而, 由于配向膜液 体表面张力的差异, 会存在扩散不均状况从而导致配向膜厚度均一性差, 影响 显示面板的光学品质。
因此, 需要提供能够解决上述问题的膜层书铺设装置及使用该装置的膜层铺 设方法。
发明内容
为了解决上述技术问题, 本发明实施例提供了一种膜层铺设装置, 其包括 喷墨器、 承载板及加热器。 所述承载板用于承载需要铺设膜层的基板。 所述喷 墨器按照预设的喷涂量及步进速率在所述基板上喷涂膜层材料。 所述加热器在 喷涂膜层材料的过程中将所述膜层材料加热至预设温度范围以降低膜层材料的 表面张力差异而造成的扩散不均。
其中, 所述加热器设置在设置在承载板内, 并通过加热基板以将热量传递 至膜层材料。
其中, 所述喷墨器包括用于收容膜层材料的容置腔及将膜层材料喷射在基 板上的喷墨头。
其中, 所述加热器还可以设置在喷墨器的容置腔或喷墨头上以对膜层材料 进行直接加热。
其中, 所述第一基板的显示区域上所设置的电极为固化电极。 所述固化电 极的一端与位于非显示区域内的固化电路相连接。 另一端延伸至显示区域内与 液晶分子相接触。
其中, 所述容置腔沿第一方向延伸并在喷涂过程中沿与第一方向垂直的第 二方向平移。 所述喷墨头沿容置腔的延伸方向按预设间隔排列。
其中, 所述容置腔沿第一方向延伸。 在喷涂膜层材料的过程中, 所述喷墨 器保持不动, 所述承载板沿与第一方向垂直的第二方向平移。
其中, 所述膜层材料为液晶分子的配向膜材料。
对应地, 本发明还提供一种膜层铺设方法, 其包括如下步骤:
提供一基板;
在所述基板上形成膜层液滴;
将喷涂在基板上的膜层材料液滴加热至预设温度;
将所述膜层材料液滴在基板上扩散成膜。
其中, 在形成膜层材料液滴前, 将所提供的基板进行清洗以减少基板表面 的微粒杂质。
其中, 所述预设的温度位于大于或等于 10摄氏度而小于或等于 60摄氏度 的范围内。
其中, 所述膜层材料为液晶分子的配向膜材料。
本发明所提供的膜层铺设装置及使用该装置的膜层铺设方法通过在喷涂膜 层材料的过程中将所述膜层材料加热至预设温度, 从而减少膜层材料分子的表 面张力, 使得膜层会扩散得更均匀。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术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, 对于本领域普通技术人员来讲, 在不付 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例所提供的膜层铺设装置的结构示意图。
图 2是本发明实施例所提供的膜层铺设方法的步骤流程图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明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发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动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。
如图 1所示, 本发明实施例所提供的膜层铺设装置 1包括喷墨器 10、 承载 板 12及加热器 14。 所述承载板 12用于承载需要铺设膜层的基板 2。 所述喷墨 器 10按照预设的喷涂量及步进速率在基板 2上喷上膜层材料 3。 所述加热器 14 在喷涂膜层材料 3的过程中将所述膜层材料 3加热至预设温度范围, 以降低膜 层材料 3 的表面张力差异而造成的扩散不均。 在本实施例中, 所述膜层材料 3 为液晶分子的配向膜。 所述基板 2为透明的玻璃基板。
所述喷墨器 10包括容置腔 100及喷墨头 102。 所述容置腔 100用于收容膜 层材料 3。 所述容置腔 100沿第一方向 A延伸并在喷涂过程中沿与第一方向 A 垂直的第二方向 B平移。 所述喷墨头 102沿容置腔 100的延伸方向按预设间隔 排列。 所述膜层材料 3通过喷墨头 102形成液滴后喷落在基板 2上。
所述承载板 12为面积大于基板 2的平板。 所述承载板 12可沿所述第二方 向 B平移。 所以, 在膜层材料 3的喷涂过程中, 所述喷墨器 10也可以保持不动 而沿第二方向 B移动承载板 12以在基板 2上形成膜层材料 3的液滴阵列。
所述加热器 14可以为直接接触传热的电阻丝加热器、 非接触式的电磁波加 热器、 超声波加热器或红外线加热器。 在本实施例中, 所述加热器 14设置在承 载板 12内, 并通过加热基板 2以将热量传递至膜层材料 3。 所述承载板 12上还 设置有温度检测器 (图未示)以对膜层材料 3的温度实行监控。
可以理解的是, 在其他可替代的实施例中, 所述加热器 14还可以设置在喷 墨器 10的容置腔 100或喷墨头 102上以对膜层材料 3进行直接加热。
如图 2所示, 本发明实施例所提供的膜层铺设方法, 其包括如下步骤: 步骤 S11 , 提供一基板 2, 所述基板 2可以为彩色滤光片基板或薄膜晶体管 基板。
步骤 S12, 清洗所述基板 2以减少基板 2表面的微粒杂质, 进而降低所述微 粒杂质对膜层材料 3的表面张力分布造成的影响。
步骤 S13 , 在所述基板 2上形成膜层液滴。 在本实施例中, 所述膜层材料 3 经喷墨头 102形成液滴后呈阵列式分布在所述基板 2上。
步骤 S14,将所述基板 2上的膜层材料 3液滴加热至预设温度。根据关于液 体表面张力的哈金斯 (Harkins)经验公式: F = M -0.145t -0.00024t2 , 其中, F 为膜 层材料 3的表面张力, M为膜层材料 3的分子间作用力, t为摄氏温度。 所以, 膜层材料 3 的表面张力取决于温度, 且随温度升高表面张力会减小, 从而使得 膜层会扩散得更均匀性。 在本实施例中, 所述膜层材料 3 的温度应控制在大于 或等于 10摄氏度而小于或等于 60摄氏度的范围内。
步骤 S15 ,将所述膜层材料 3液滴在基板 2上扩散成膜,加热至预设温度的 膜层材料 3液滴在表面张力的作用下扩散成膜。
本发明所提供的膜层铺设装置 1 及使用该装置的膜层铺设方法通过在喷涂 膜层材料 3 的过程中将所述膜层材料 3加热至预设温度, 从而减少膜层材料 3 分子的表面张力, 使得膜层会扩散得更均匀。
以上所揭露的仅为本发明一种较佳实施例而已, 当然不能以此来限定本发 明之权利范围, 因此依本发明权利要求所作的等同变化, 仍属本发明所涵盖的 范围。

Claims

权 利 要 求 书
1. 一种膜层铺设装置, 其包括喷墨器、 承载板及加热器, 所述承载板用于 承载需要铺设膜层的基板, 所述喷墨器按照预设的喷涂量及步进速率在所述基 板上喷涂膜层材料, 所述加热器在喷涂膜层材料的过程中将所述膜层材料加热 至预设温度范围以降低膜层材料的表面张力差异而造成的扩散不均。
2. 如权利要求 1所述的膜层铺设装置, 其中, 所述加热器设置在设置在承 载板内, 并通过加热基板以将热量传递至膜层材料。
3. 如权利要求 1所述的膜层铺设装置, 其中, 所述喷墨器包括用于收容膜 层材料的容置腔及将膜层材料喷射在基板上的喷墨头。
4. 如权利要求 3所述的膜层铺设装置, 其中, 所述加热器还可以设置在喷 墨器的容置腔或喷墨头上以对膜层材料进行直接加热。
5. 如权利要求 3所述的膜层铺设装置, 其中, 所述容置腔沿第一方向延伸 并在喷涂过程中沿与第一方向垂直的第二方向平移, 所述喷墨头沿容置腔的延 伸方向按预设间隔排列。
6. 如权利要求 4所述的膜层铺设装置, 其中, 所述容置腔沿第一方向延伸, 在喷涂膜层材料的过程中, 所述喷墨器保持不动, 所述承载板沿与第一方向垂 直的第二方向平移。
7. 如权利要求 1所述的膜层铺设装置, 其中, 所述膜层材料为液晶分子的 配向膜材料。
8. 一种膜层铺设方法, 其包括如下步骤:
提供一基板;
在所述基板上形成膜层液滴;
将喷涂在基板上的膜层材料液滴加热至预设温度;
将所述膜层材料液滴在基板上扩散成膜。
9. 如权利要求 8所述的膜层铺设方法, 其中, 在形成膜层材料液滴前, 将 所提供的基板进行清洗以减少基板表面的微粒杂质。
10. 如权利要求 8所述的膜层铺设方法, 其中, 所述预设的温度位于大于或 等于 10摄氏度而小于或等于 60摄氏度的范围内。
11. 如权利要求 8所述的膜层铺设方法, 其中, 所述膜层材料为液晶分子的 配向膜材料。
PCT/CN2014/070859 2013-09-05 2014-01-19 膜层铺设装置及使用该装置的膜层铺设方法 WO2015032178A1 (zh)

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