WO2016061834A1 - 聚酰亚胺涂布方法及装置 - Google Patents

聚酰亚胺涂布方法及装置 Download PDF

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WO2016061834A1
WO2016061834A1 PCT/CN2014/089794 CN2014089794W WO2016061834A1 WO 2016061834 A1 WO2016061834 A1 WO 2016061834A1 CN 2014089794 W CN2014089794 W CN 2014089794W WO 2016061834 A1 WO2016061834 A1 WO 2016061834A1
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polyimide
glass substrate
nozzle
relief
coating
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PCT/CN2014/089794
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English (en)
French (fr)
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徐亮
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深圳市华星光电技术有限公司
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Priority to US14/411,409 priority Critical patent/US9795988B2/en
Publication of WO2016061834A1 publication Critical patent/WO2016061834A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0278—Arrangement or mounting of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment 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
    • B05D3/12—Pretreatment 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 by mechanical means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • 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
    • G02F1/1337—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B05D2203/35—Glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/10—Deposition methods
    • C03C2218/11—Deposition methods from solutions or suspensions
    • C03C2218/112—Deposition methods from solutions or suspensions by spraying
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/32—After-treatment

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a polyimide coating method and device.
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates, and control the liquid crystal molecules to change direction by energizing or not the glass substrate, and refract the light of the backlight module to produce a picture.
  • a liquid crystal display panel consists of a color filter substrate (CF, Color Filter), a thin film transistor substrate (TFT, Thin Film Transistor), a liquid crystal (LC) sandwiched between a color filter substrate and a thin film transistor substrate, and a sealant frame (Sealant). )composition.
  • Liquid crystal display panels usually apply polyimide (PI, Polyimide) on a thin film transistor substrate and a color film substrate, and form a pretilt angle on a polyimide by rubbing or photolithography to give liquid crystal molecules. Provide a bearing angle.
  • the polyimide coating process in the prior art mainly adopts the following method: uniformly distributing the polyimide liquid on the relief (APR plate), and then passing the polyimide liquid through the roller through the relief (APR plate). (Roller) is transferred onto a thin film transistor or a color film substrate, and the thin film transistor or the color filter substrate is moved in a plane to complete the coating of the polyimide.
  • the existing polyimide coating apparatus is relatively complicated, and the coating polyimide is produced for a long time, and the polyimide liquid easily flows away from both sides of the thin film transistor or the color filter substrate, but the material is wasted.
  • Embodiments of the present invention provide a method for shortening polyimide coating time, improving coating efficiency, and reducing coating. Costly polyimide coating method and apparatus.
  • a polyimide coating method comprising the following steps,
  • the number of the nozzles is at least two, and the at least two nozzles are arranged in a row.
  • the arrangement length of the at least two nozzles is equal to the width of the glass substrate.
  • the nozzle uses a circular nozzle.
  • the at least two nozzles are simultaneously turned on or off.
  • the at least two nozzles have the same flow rate.
  • the relief is made of polybutylene resin.
  • the relief is made of a fluorine-based material.
  • a polyimide coating apparatus comprising a conveying device, a nozzle, a roller for conveying a glass substrate, the nozzle for spraying a polyimide liquid on the glass substrate to form a polyacyl group
  • An imide film, the roll is provided with a relief, and the roll provided with a relief is used for modifying a polyimide film uniformly distributed on the glass substrate.
  • the relief plate is made of a polybutylene resin or a fluorine-based material.
  • the polyimide coating method and apparatus of the present invention shortens the polyimide coating time, improves the coating efficiency, and reduces the coating cost; and sprays the polyimide liquid by moving at least two nozzles, and moves the substrate.
  • the polyimide liquid is quickly and evenly coated on the glass substrate, and the stamping roller is used to modify the polyimide film uniformly distributed on the glass substrate to make the polyimide plane more flat, thereby obtaining better Coating effect.
  • FIG. 1 is a schematic flow chart of a polyimide coating method according to a preferred embodiment of the present invention
  • FIG. 2 is a schematic structural view of a polyimide coating apparatus according to a preferred embodiment of the present invention.
  • the present invention provides a polyimide coating method and a polyimide coating apparatus for coating polyimide on a substrate of a liquid crystal display panel.
  • the substrate may be a thin film transistor substrate or a glass substrate of a color filter substrate.
  • a polyimide coating apparatus 10 of the present invention includes a conveying device 20, a nozzle 30, and a drum 40.
  • the transfer device 20 is used to transport the glass substrate 50.
  • the nozzle 30 is used to spray a polyimide liquid 200 on the glass substrate 50 to form a polyimide film (not shown).
  • the roller 40 is provided with a relief 41 for adjusting the polyimide film uniformly distributed on the glass substrate 50.
  • the number of the nozzles 30 is at least two, and the nozzles 30 and the rollers 40 are sequentially disposed in the conveying direction of the conveying device 20.
  • the polyimide coating method of the present invention comprises the following steps:
  • a glass substrate 50 and at least one nozzle 30 are provided.
  • the number of nozzles 30 in this step may be one or at least two.
  • the at least two nozzles 30 may be closely aligned in a row.
  • the arrangement length of the at least two nozzles 30 is equal to the width of the glass substrate 50.
  • the arrangement length of the nozzles 30 is set to be equal to the width of the glass substrate 50 to ensure that the polyimide liquid 200 can be completely dropped on the glass substrate 50, thereby preventing the coating from being incomplete or dripping outside the glass substrate 50. And cause waste.
  • the Two fewer nozzles 30 are vertically suspended above the glass substrate 50, and the outer edges of the entire row of nozzles 30 are aligned with the outer edges of the glass substrate 50 to avoid waste due to incomplete coating or dripping outside the glass substrate 50.
  • step S102 the polyimide liquid 200 is sprayed on the glass substrate 50 through the nozzle 30 to form a polyimide film.
  • the nozzle 30 may be a round tube type nozzle 30 or other suitable size nozzle 30.
  • the glass substrate 50 can be placed over the drive belt to move the glass substrate 50 relative to the nozzle 30.
  • the moving direction of the glass substrate 50 may be perpendicular to the arrangement direction of the at least two nozzles 30. It will be appreciated that the glass substrate 50 can be moved in any manner perpendicular to the plane of the nozzle 30.
  • each nozzle 30 simultaneously and rapidly drops the polyimide liquid 200 onto the glass substrate 50 at a set flow rate to form a poly. Imide film.
  • the at least two nozzles 30 are simultaneously turned on or off, thereby ensuring that the polyimide liquid 200 is uniformly dropped on the glass substrate 50.
  • Each of the nozzles 30 has the same flow rate, which is set according to the moving speed of the glass substrate 50 and the thickness of the polyimide film to be coated; the at least two nozzles 30 are simultaneously opened or closed at the same time. In order to ensure the uniformity of the coating of the polyimide solution 200 liquid.
  • Step S103 moving the glass substrate 50 such that the glass substrate 50 passes through a roller 40 (Roller) provided with a relief 41 (APR plate), and is uniformly distributed on the glass substrate 50 by a roller 40 provided with a relief 41.
  • the imine film is modified to uniformly flatten the surface of the polyimide film on the glass substrate 50.
  • the polyimide liquid 200 can be uniformly diffused by controlling the pressure between the roller 40 and the glass substrate 50.
  • the relief 41 may be made of a polybutylene resin or a fluorine-based material, and does not carry away too much polyimide liquid 200, thereby facilitating diffusion of the polyimide.
  • the length of the relief 41 is slightly larger than the width of the glass substrate 50 to ensure uniformity and flatness of the surface of the polyimide film.
  • the thickness of the polyimide on the glass substrate 50 can also be controlled by adjusting the gap between the relief 41 and the glass substrate 50.
  • the polyimide coating method and apparatus of the present invention shortens the polyimide coating time, improves the coating efficiency, and reduces the coating cost; and sprays the polyimide liquid 200 by moving at least two nozzles 30 and moves
  • the substrate is such that the polyimide liquid 200 is quickly and uniformly coated on the glass substrate 50, and the roll provided with the relief 41
  • the canister 40 trims the polyimide film uniformly distributed on the glass substrate 50 to make the polyimide plane flatter, thereby obtaining a better coating effect.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
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  • Spectroscopy & Molecular Physics (AREA)
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  • Application Of Or Painting With Fluid Materials (AREA)
  • Liquid Crystal (AREA)
  • Coating Apparatus (AREA)

Abstract

一种聚酰亚胺涂布方法，包括以下步骤，提供玻璃基板（50）及至少一个喷嘴（30）；通过喷嘴于玻璃基板上喷涂聚酰亚胺液（200），以形成聚酰亚胺薄膜；移动所述玻璃基板，使玻璃基板经过设有凸版的辊筒（40），通过设有凸版的辊筒对均布于玻璃基板上的聚酰亚胺薄膜进行修型，使玻璃基板上的聚酰亚胺薄膜表面均匀平整。还提供一种聚酰亚胺涂布装置（10）。该聚酰亚胺涂布方法及装置可缩短聚酰亚胺涂布时间、提高涂布效率、降低涂布成本。

Description

聚酰亚胺涂布方法及装置
本发明要求2014年10月20日递交的发明名称为“聚酰亚胺涂布方法及装置”的申请号201410558221.0的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示领域，尤其涉及一种聚酰亚胺涂布方法及装置。
背景技术
液晶显示装置(LCD，Liquid Crystal Display)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶显示面板及背光模组(backlight module)。液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过玻璃基板通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
通常液晶显示面板由彩膜基板(CF，Color Filter)、薄膜晶体管基板(TFT，ThinFilm Transistor)、夹于彩膜基板与薄膜晶体管基板之间的液晶(LC，Liquid Crystal)及密封胶框(Sealant)组成。液晶显示面板通常会在薄膜晶体管基板及彩膜基板上涂布聚酰亚胺(PI，Polyimide)，并在聚酰亚胺上通过摩擦(Rubbing)或光蚀刻技术形成预倾角，从而给液晶分子提供一个承载的角度。
现有技术中的聚酰亚胺涂布工艺主要通过以下方式：将聚酰亚胺液均匀地分布在凸版(APR版)上，然后通过凸版(APR版)把聚酰亚胺液通过辊筒(Roller)转印到薄膜晶体管或者彩膜基板上，同时薄膜晶体管或者彩膜基板于平面内移动移动，进而完成聚酰亚胺的涂布。然而现有的聚酰亚胺涂布装置相对复杂，且涂布聚酰亚胺生产时间长，聚酰亚胺液容易自所述薄膜晶体管或者彩膜基板两侧流走，但是材料浪费。
发明内容
本发明实施例提供一种缩短聚酰亚胺涂布时间、提高涂布效率、降低涂布 成本的聚酰亚胺涂布方法及装置。
一种聚酰亚胺涂布方法，包括以下步骤，
提供玻璃基板及至少一个喷嘴；
通过喷嘴于玻璃基板上喷涂聚酰亚胺液，以形成聚酰亚胺薄膜；
移动所述玻璃基板，使玻璃基板经过设有凸版的辊筒，通过设有凸版的辊筒对均布于玻璃基板上聚酰亚胺薄膜进行修型，使玻璃基板上的聚酰亚胺薄膜表面均匀平整。
进一步的，所述喷嘴的设置数量为至少两个，且所述至少两个喷嘴列为一排。
进一步的，所述至少两个喷嘴的排列长度与所述玻璃基板的宽度相等。
进一步的，所述喷嘴采用圆形喷嘴。
进一步的，当通过喷嘴于玻璃基板上喷涂聚酰亚胺液，以形成聚酰亚胺薄膜时，所述至少两个喷嘴同时开启或关闭。
进一步的，所述至少两个喷嘴具有相同的流量。
进一步的，所述凸版采用聚亚丁烯树脂制成。
进一步的，所述凸版采用氟基材料制成。
一种聚酰亚胺涂布装置，包括传送装置、喷嘴、辊筒，所述传送装置用于传送玻璃基板，所述喷嘴用于将聚酰亚胺液喷涂于所述玻璃基板以形成聚酰亚胺薄膜，所述辊筒设有凸版，所述设有凸版的辊筒用于对均布于所述玻璃基板上聚酰亚胺薄膜进行修型。
进一步的，所述凸版采用聚亚丁烯树脂或氟基材料制成。
本发明的聚酰亚胺涂布方法及装置，缩短聚酰亚胺涂布时间、提高涂布效率、降低涂布成本；其通过将数至少两个喷嘴喷涂聚酰亚胺液并移动基板，使聚酰亚胺液快速均匀地涂布在玻璃基板上，设有凸版的辊筒对均布于玻璃基板上聚酰亚胺薄膜进行修型使聚酰亚胺平面更加平整，从而获取较佳的涂布效果。
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是本发明较佳实施例方式提供的一种聚酰亚胺涂布方法的流程示意图；
图2是本发明较佳实施例方式提供的一种聚酰亚胺涂布装置的结构示意图。
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。
请参阅图1及图2，本发明提供一种聚酰亚胺涂布方法及一种聚酰亚胺涂布装置，用于在液晶显示面板的基板上涂布聚酰亚胺。在本实施例中，所述基板可为薄膜晶体管基板或彩膜基板的玻璃基板。
本发明的一种聚酰亚胺涂布装置10包括传送装置20、喷嘴30、辊筒40。所述传送装置20用于传送玻璃基板50。所述喷嘴30用于将聚酰亚胺液200喷涂于所述玻璃基板50以形成聚酰亚胺薄膜(图未示)。所述辊筒40设有凸版41，所述设有凸版41的辊筒40用于对均布于所述玻璃基板50上聚酰亚胺薄膜进行修型。所述喷嘴30的设置数量为至少两个，所述喷嘴30、辊筒40沿所述传送装置20的传送方向依次设置。
本发明的聚酰亚胺涂布方法包括以下步骤：
步骤S101，提供玻璃基板50及至少一个喷嘴30。在本步骤中的喷嘴30的数量可为一个或至少两个。当所述喷嘴30的数量为至少两个时，所述至少两个喷嘴30可紧密平齐地排列为一排。较佳的，所述至少两个喷嘴30的排列长度与玻璃基板50的宽度相等。本步骤中，通过设置所述喷嘴30的排列长度等于玻璃基板50的宽度，以保证聚酰亚胺液200能完全滴落于玻璃基板50上，避免涂布不全或滴落于玻璃基板50外而造成浪费。在本步骤中，所述至 少两个喷嘴30垂直悬置于玻璃基板50的上方，所述整排喷嘴30的外侧边缘与玻璃基板50的外侧边缘对齐，避免涂布不全或滴落于玻璃基板50外而造成浪费。
步骤S102，通过喷嘴30于玻璃基板50上喷涂聚酰亚胺液200，以形成聚酰亚胺薄膜。在本实施例中，所述喷嘴30可采用圆管型喷嘴30或其他适用规格的喷嘴30。所述玻璃基板50可放置于传动带之上，从而使玻璃基板50相对于喷嘴30移动。所述玻璃基板50的移动方向可垂直于所述至少两个喷嘴30的排布方向。可以理解的是，所述玻璃基板50可采用任意方式于垂直于所述喷嘴30的平面内移动。
在本步骤中，通过开启该数个喷嘴30并移动玻璃基板50，使每一根喷嘴30按照设定流量同时将聚酰亚胺液200快速均匀地滴落在玻璃基板50上，以形成聚酰亚胺薄膜。
优选的，在本步骤中，所述至少两个喷嘴30同时开启或关闭，从而保证聚酰亚胺液200均匀滴落于所述玻璃基板50。
所述每一根喷嘴30具有相同的流量，该流量大小依据玻璃基板50的移动速度及所需涂布的聚酰亚胺薄膜的厚度设定；所述至少两个喷嘴30同时打开或同时关闭，以保证聚酰亚胺液200液涂布的均匀性。
步骤S103，移动所述玻璃基板50，使玻璃基板50经过设有凸版41(APR版)的辊筒40(Roller)，通过设有凸版41的辊筒40对均布于玻璃基板50上聚酰亚胺薄膜进行修型，使玻璃基板50上的聚酰亚胺薄膜表面均匀平整。
在本步骤中，可通过控制所述辊筒40与所述玻璃基板50之间的压力，使聚酰亚胺液200均匀扩散。所述凸版41可采用聚亚丁烯树脂或氟基材料制成，不会带走过多的聚酰亚胺液200，从而有利于聚酰亚胺的扩散。优选的，所述凸版41的长度略大于所述玻璃基板50宽度，以保证聚酰亚胺薄膜表面的均匀性及平整性。在本步骤中，还可通过调节所述凸版41与所述玻璃基板50之间的间隙控制所述玻璃基板50上的聚酰亚胺的厚度。
本发明的聚酰亚胺涂布方法及装置，缩短聚酰亚胺涂布时间、提高涂布效率、降低涂布成本；其通过将数至少两个喷嘴30喷涂聚酰亚胺液200并移动基板，使聚酰亚胺液200快速均匀地涂布在玻璃基板50上，设有凸版41的辊 筒40对均布于玻璃基板50上聚酰亚胺薄膜进行修型使聚酰亚胺平面更加平整，从而获取较佳的涂布效果。
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，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。
以上所揭露的仅为本发明较佳实施例而已，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 (10)

  1. 一种聚酰亚胺涂布方法，其特征在于，包括以下步骤，
    提供玻璃基板及至少一个喷嘴；
    通过喷嘴于玻璃基板上喷涂聚酰亚胺液，以形成聚酰亚胺薄膜；
    移动所述玻璃基板，使玻璃基板经过设有凸版的辊筒，通过设有凸版的辊筒对均布于玻璃基板上聚酰亚胺薄膜进行修型，使玻璃基板上的聚酰亚胺薄膜表面均匀平整。
  2. 如权利要求1所述的聚酰亚胺涂布方法，其特征在于，所述喷嘴的设置数量为至少两个，且所述至少两个喷嘴列为一排。
  3. 如权利要求2所述的聚酰亚胺涂布方法，其特征在于，所述至少两个喷嘴的排列长度与所述玻璃基板的宽度相等。
  4. 如权利要求1所述的聚酰亚胺涂布方法，其特征在于，所述喷嘴采用圆形喷嘴。
  5. 如权利要求2所述的聚酰亚胺涂布方法，其特征在于，当通过喷嘴于玻璃基板上喷涂聚酰亚胺液，以形成聚酰亚胺薄膜时，所述至少两个喷嘴同时开启或关闭。
  6. 如权利要求5所述的聚酰亚胺涂布方法，其特征在于，所述至少两个喷嘴具有相同的流量。
  7. 如权利要求1所述的聚酰亚胺涂布方法，其特征在于，所述凸版采用聚亚丁烯树脂制成。
  8. 如权利要求1所述的聚酰亚胺涂布方法，其特征在于，所述凸版采用氟基材料制成。
  9. 一种聚酰亚胺涂布装置，其特征在于，包括传送装置、喷嘴、辊筒，所述传送装置用于传送玻璃基板，所述喷嘴用于将聚酰亚胺液喷涂于所述玻璃基板以形成聚酰亚胺薄膜，所述辊筒设有凸版，所述设有凸版的辊筒用于对均布于所述玻璃基板上聚酰亚胺薄膜进行修型。
  10. 如权利要求9所述的聚酰亚胺涂布装置，其特征在于，所述凸版采用聚亚丁烯树脂或氟基材料制成。
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