WO2014029147A1 - 液晶显示面板的聚酰亚胺涂布方法 - Google Patents

液晶显示面板的聚酰亚胺涂布方法 Download PDF

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Publication number
WO2014029147A1
WO2014029147A1 PCT/CN2012/081315 CN2012081315W WO2014029147A1 WO 2014029147 A1 WO2014029147 A1 WO 2014029147A1 CN 2012081315 W CN2012081315 W CN 2012081315W WO 2014029147 A1 WO2014029147 A1 WO 2014029147A1
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Prior art keywords
glass substrate
polyimide
nozzles
liquid crystal
substrate
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PCT/CN2012/081315
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English (en)
French (fr)
Inventor
黄炳成
张小新
段惠芳
金昊
黄俊杰
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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 US13/699,074 priority Critical patent/US9144134B2/en
Publication of WO2014029147A1 publication Critical patent/WO2014029147A1/zh

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    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a polyimide coating method for a liquid crystal display panel. Background technique
  • 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, 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, liquid crystal) sandwiched between a color filter substrate and a thin film transistor substrate, and a sealant frame ( Sealant), the molding process generally includes: front array (Array) process (film, yellow, etching and stripping), middle cell (cell) process (TFT substrate and CF substrate bonding) and rear module assembly Process (drive IC is pressed with printed circuit board).
  • Array array
  • Sealant Sealant
  • the front Array process mainly forms a TFT substrate to control the movement of liquid crystal molecules; the middle Cell process mainly adds liquid crystal between the TFT substrate and the CF substrate; the rear module assembly process is mainly to drive the IC to press and print the circuit.
  • the integration of the plates drives the liquid crystal molecules to rotate, displaying images.
  • Liquid crystal display panels usually apply polyimide on thin film transistor substrates and color film substrates.
  • Polyimide Polyimide, PI
  • a pretilt angle is formed on the polyimide by rubbing or photolithography to provide a load bearing angle to the liquid crystal molecules.
  • the existing polyimide coating process most of the polyimide 170 liquid is uniformly distributed on the relief 130 (APR version) through the roller 150 (roller), and then passed.
  • the relief 130 (APR version) transfers the polyimide liquid 170 to the thin film transistor or the color filter substrate 110 through the roller 150, and the thin film transistor or the color filter substrate 110 is moved in the direction of the arrow to complete the polyimide 170.
  • Coating the existing polyimide coating apparatus is relatively complicated, and the coating polyimide is produced for a long time, so that both the coating apparatus and the coating process are to be further improved. Summary of the invention
  • An object of the present invention is to provide a polyimide coating method for a liquid crystal display panel, in which a plurality of nozzles are arranged in a close row in a tightly aligned manner, and a polyimide is coated on a glass substrate by a whole row of nozzles.
  • the coating device and process are simplified, the production time is shortened, the coating effect is improved, and the coating cost is reduced.
  • the present invention provides a polyimide coating method for a liquid crystal display panel, comprising the following steps:
  • Step 1 Provide a plurality of nozzles and a glass substrate
  • Step 2 arranging the plurality of nozzles in a tightly aligned manner so that the arrangement length of the nozzles is equal to the width of the glass substrate;
  • Step 3 The entire row of nozzles is vertically suspended above the glass substrate, and is disposed corresponding to the glass substrate in the width direction of the glass substrate;
  • Step 4 simultaneously open the plurality of nozzles, so that each nozzle simultaneously drops the polyimide liquid at a set flow rate, and simultaneously moves the glass substrate, so that the polyimide liquid is uniformly distributed on the glass substrate.
  • Step 5 The polyimide film uniformly distributed on the glass substrate is modified by a doctor blade to uniformly flatten the surface of the polyimide film on the glass substrate.
  • the plurality of nozzles have the same structure.
  • the nozzle is a circular tube nozzle.
  • the plurality of nozzles have the same flow rate, and the flow rate is set according to the moving speed of the glass substrate and the thickness of the polyimide film to be applied.
  • the plurality of nozzles are uniformly controlled by a switch, thereby causing the nozzles to be simultaneously opened or closed at the same time.
  • the blade length is greater than or equal to the width of the glass substrate, and the blade is disposed above the moving glass substrate on which the polyimide liquid is dropped.
  • the doctor blade controls the thickness of the polyimide film on the glass substrate by adjusting the gap with the glass substrate.
  • the scraper is a triangular-edge scraper.
  • the liquid crystal display panel includes a thin film transistor substrate, a color filter substrate disposed opposite to the thin film transistor substrate, and liquid crystal molecules between the thin film transistor substrate and the color filter substrate, wherein the thin film transistor substrate and the color filter substrate each have a glass substrate
  • the polyimide is coated on the glass substrate.
  • the invention also provides a polyimide coating method for a liquid crystal display panel, comprising the following steps: Step 1, providing a plurality of nozzles and a glass substrate;
  • Step 2 arranging the plurality of nozzles in a tightly aligned manner so that the arrangement length of the nozzles is equal to the width of the glass substrate;
  • Step 3 The entire row of nozzles is vertically suspended above the glass substrate, and is disposed corresponding to the glass substrate in the width direction of the glass substrate;
  • Step 4 simultaneously open the plurality of nozzles, so that each nozzle simultaneously drops the polyimide liquid at a set flow rate, and simultaneously moves the glass substrate, so that the polyimide liquid is uniformly distributed on the glass substrate.
  • Step 5 The polyimide film uniformly distributed on the glass substrate is modified by a doctor blade to uniformly flatten the surface of the polyimide film on the glass substrate;
  • the nozzle is a circular tube nozzle
  • the plurality of nozzles have the same flow rate, and the flow rate is set according to the moving speed of the glass substrate and the thickness of the polyimide film to be applied;
  • the plurality of nozzles are uniformly controlled by a switch, so that the nozzles are simultaneously opened or closed at the same time;
  • the scraper length is greater than or equal to the width of the glass substrate, and the scraper is disposed above the moving glass substrate on which the polyimide liquid is dropped;
  • doctor blade controls the thickness of the polyimide film on the glass substrate by adjusting the gap between the blade and the glass substrate;
  • the scraper is a triangular-edge scraper
  • the liquid crystal display panel includes a thin film transistor substrate, a color filter substrate disposed opposite to the thin film transistor substrate, and liquid crystal molecules between the thin film transistor substrate and the color filter substrate, wherein the thin film transistor substrate and the color filter substrate each have a A glass substrate on which the polyimide is coated.
  • the polyimide coating method of the liquid crystal display panel of the present invention forms a coating tool by arranging a plurality of identical circular tube nozzles in a tightly flush manner, and simultaneously opening the nozzles during coating And moving the glass substrate, so that the polyimide liquid is quickly and evenly coated on the glass substrate, and then the polyimide plane is more flat under the action of the doctor blade, and the coating effect is good; the liquid crystal display panel of the invention
  • the polyimide coating method simplifies the coating process and apparatus, shortens production time, and reduces coating costs.
  • FIG. 1 is a schematic view showing a polyimide coating process of a conventional liquid crystal display panel
  • FIG. 2 is a flow chart of a polyimide coating method of a liquid crystal display panel of the present invention
  • FIG. 3 is a schematic view showing a polyimide coating process of a liquid crystal display panel of the present invention. detailed description
  • the present invention provides a polyimide coating method for a liquid crystal display panel, wherein the liquid crystal display panel includes a thin film transistor substrate, a color filter substrate disposed opposite to the thin film transistor substrate, and The liquid crystal molecules between the thin film transistor substrate and the color filter substrate, wherein the thin film transistor substrate and the color filter substrate each have a glass substrate, and the polyimide is coated on the glass substrate, and the coating method comprises the following steps:
  • Step 1 A plurality of nozzles 20 and a glass substrate 40 are provided.
  • the plurality of nozzles 20 have the same structure.
  • the nozzle 20 is a circular tube nozzle, and the glass substrate 40 is movably disposed.
  • the glass substrate 40 is placed on a conveyor belt (not shown). )on.
  • Step 2 The plurality of nozzles 20 are arranged in a close alignment so that the length of the nozzle 20 is equal to the width of the glass substrate 40.
  • the arrangement length of the nozzles 20 is equal to the width of the glass substrate 40 to ensure that the polyimide liquid 60 can be completely dropped on the glass substrate 40 to avoid waste due to incomplete coating or dripping outside the glass substrate 40.
  • Step 3 The entire row of nozzles 20 are vertically suspended above the glass substrate 40, and are disposed corresponding to the glass substrate 40 in the width direction of the glass substrate 40.
  • the outer edge of the entire row of nozzles 20 is aligned with the outer edge of the glass substrate 40 to avoid waste due to incomplete coating or dripping outside the glass substrate 40.
  • Step 4 simultaneously open the plurality of nozzles 20, and simultaneously move the glass substrate 40, so that each nozzle 20 simultaneously drops the polyimide liquid 60 on the glass substrate 40 at a set flow rate to form a poly Imide film 62.
  • the direction in which the glass substrate 40 moves is indicated by an arrow.
  • Each of the nozzles 20 has the same flow rate, and the flow rate is determined according to the glass substrate 40.
  • the moving speed and the thickness of the polyimide film 62 to be applied are set; the plurality of nozzles 20 are collectively controlled by a switch (not shown), so that the nozzles 20 are simultaneously opened or closed at the same time to ensure The polyimide liquid 60 is coated to ensure the quality of the liquid crystal display panel.
  • Step 5 The polyimide film uniformly distributed on the glass substrate 40 is modified by the doctor blade 80, so that the surface of the polyimide film 62 on the glass substrate 40 is flattened.
  • the scraper 80 is disposed above the moving glass substrate 40 on which the polyimide liquid 60 is dropped.
  • the length of the scraper 80 is greater than or equal to the width of the glass substrate 40.
  • the length of the scraper 80 is slightly larger than the width of the glass substrate 40. The uniformity and flatness of the surface of the polyimide film 62 are ensured.
  • the thickness of the polyimide film 62 on the glass substrate 40 can also be controlled by adjusting the gap between the doctor blade 80 and the glass substrate 40.
  • the scraper 80 is a triangular-edge scraper.
  • the present invention provides a polyimide coating method for a liquid crystal display panel, which simplifies the coating process and apparatus, shortens production time, and reduces coating cost; it passes several identical circles
  • the tubular nozzles are arranged in a line in a tightly flush manner to form a coating tool.
  • the nozzle is simultaneously opened, and the substrate is moved, so that the polyimide liquid is quickly and uniformly coated on the glass substrate, and then acts as a doctor blade.
  • the polyimide plane is made flatter, and a good coating effect is obtained.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

一种液晶显示面板的聚酰亚胺涂布方法，包括如下步骤：步骤1、提供数根喷嘴（20）及玻璃基板（40）；步骤2、将该数根喷嘴（20）紧密平齐的排列成一整排，使喷嘴（20）的排列长度与玻璃基板（40）的宽度相等；步骤3、将该整排喷嘴（20）垂直悬置于玻璃基板（40）的上方，且在玻璃基板（40）的宽度方向上与玻璃基板（40）对应设置；步骤4、同时开启该数个喷嘴（20），使每一根喷嘴（20）按照设定流量同时将聚酰亚胺液（60）快速均匀地滴落，同时移动玻璃基板（40），使得聚酰亚胺液（60）均布于玻璃基板（40）上，形成聚酰亚胺薄膜（62）；步骤5、通过刮刀（80）对均布于玻璃基板（40）上聚酰亚胺薄膜（62）进行修型，使玻璃基板（40）上的聚酰亚胺薄膜（62）表面均匀平整。该液晶显示面板的聚酰亚胺涂布方法简化了涂布工艺和装置，缩短了生产时间，提高了涂布效果，降低了涂布成本。

Description

液晶显示面板的聚酰亚胺涂布方法 技术领域
本发明涉及液晶显示领域， 尤其涉及一种液晶显示面板的聚酰亚胺涂 布方法。 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, Thin Film 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， 其成型工艺一般包 括： 前段阵列 （Array ) 制程 （薄膜、 黄光、 蚀刻及剥膜） 、 中段成盒 ( Cell )制程（TFT基板与 CF基板贴合）及后段模组组装制程（驱动 IC 与印刷电路板压合） 。 其中， 前段 Array制程主要是形成 TFT基板， 以便 于控制液晶分子的运动； 中段 Cell制程主要是在 TFT基板与 CF基板之间 添加液晶； 后段模组组装制程主要是驱动 IC压合与印刷电路板的整合， 进而驱动液晶分子转动， 显示图像。
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
( Polyimide,PI ) , 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。
请参阅图 1 , 对于现有的聚酰亚胺涂布工艺来说， 大部分是通过辊筒 150 ( Roller )将聚酰亚胺 170液均匀地分布在凸版 130 ( APR版）上， 然 后通过凸版 130 ( APR版）把聚酰亚胺液 170通过辊筒 150转印到薄膜晶 体管或者彩膜基板 110上， 同时薄膜晶体管或者彩膜基板 110按箭头方向 移动， 进而完成聚酰亚胺 170 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， 因此无论是涂布装置还是涂布工艺都 有待进一步改进。 发明内容
本发明的目的在于提供一种液晶显示面板的聚酰亚胺涂布方法， 其通 过将数根喷嘴紧密平齐的排列成一整排， 利用整排喷嘴在玻璃基板上涂布 聚酰亚胺， 简化了涂布装置和工艺， 缩短了生产时间， 提高了涂布效果， 降低了涂布成本。
为实现上述目的， 本发明提供一种液晶显示面板的聚酰亚胺涂布方 法， 包括如下步骤：
步骤 1、 提供数根喷嘴及玻璃基板；
步骤 2、 将该数根喷嘴紧密平齐的排列成一整排， 使喷嘴的排列长度 与玻璃基板的宽度相等；
步骤 3、 将该整排喷嘴垂直悬置于玻璃基板的上方， 且在玻璃基板的 宽度方向上与玻璃基板对应设置；
步骤 4、 同时开启该数个喷嘴， 使每一根喷嘴按照设定流量同时将聚 酰亚胺液快速均勾地滴落， 同时移动玻璃基板， 使得聚酰亚胺液均布于玻 璃基板上， 形成聚酰亚胺薄膜；
步骤 5、 通过刮刀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。
所述数根喷嘴具有相同的结构。
所述喷嘴为圓管形喷嘴。
所述数根喷嘴具有相同的流量， 该流量的大小根据玻璃基板的移动速 度及所需涂布的聚酰亚胺薄膜的厚度设定。
所述数根喷嘴由一开关统一控制， 进而使得该些喷嘴同时打开或同时 关闭。
所述刮刀长度大于或等于玻璃基板宽度， 且该刮刀设于滴有聚酰亚胺 液的移动玻璃基板上方。
所述刮刀通过调节其与玻璃基板的间隙来控制玻璃基板上聚酰亚胺薄 膜的厚度。
所述刮刀为三棱型刮刀。
所述液晶显示面板包括薄膜晶体管基板、 与薄膜晶体管基板相对设置 的彩膜基板、 及位于薄膜晶体管基板和彩膜基板之间的液晶分子， 所述薄 膜晶体管基板与彩膜基板均具有一玻璃基板， 所述聚酰亚胺涂布该玻璃基 板上。
本发明还提供一种液晶显示面板的聚酰亚胺涂布方法， 包括如下步 骤： 步骤 1、 提供数根喷嘴及玻璃基板；
步骤 2、 将该数根喷嘴紧密平齐的排列成一整排， 使喷嘴的排列长度 与玻璃基板的宽度相等；
步骤 3、 将该整排喷嘴垂直悬置于玻璃基板的上方， 且在玻璃基板的 宽度方向上与玻璃基板对应设置；
步骤 4、 同时开启该数个喷嘴， 使每一根喷嘴按照设定流量同时将聚 酰亚胺液快速均勾地滴落， 同时移动玻璃基板， 使得聚酰亚胺液均布于玻 璃基板上， 形成聚酰亚胺薄膜；
步骤 5、 通过刮刀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；
其中， 所述数根喷嘴具有相同的结构；
其中， 所述喷嘴为圓管形喷嘴；
其中， 所述数根喷嘴具有相同的流量， 该流量的大小根据玻璃基板的 移动速度及所需涂布的聚酰亚胺薄膜的厚度设定；
其中， 所述数根喷嘴由一开关统一控制， 进而使得该些喷嘴同时打开 或同时关闭；
其中， 所述刮刀长度大于或等于玻璃基板宽度， 且该刮刀设于滴有聚 酰亚胺液的移动玻璃基板上方；
其中， 所述刮刀通过调节其与玻璃基板的间隙来控制玻璃基板上聚酰 亚胺薄膜的厚度；
其中， 所述刮刀为三棱型刮刀；
其中， 所述液晶显示面板包括薄膜晶体管基板、 与薄膜晶体管基板相 对设置的彩膜基板、 及位于薄膜晶体管基板和彩膜基板之间的液晶分子， 所述薄膜晶体管基板与彩膜基板均具有一玻璃基板， 所述聚酰亚胺涂布该 玻璃基板上。
本发明的有益效果： 本发明液晶显示面板的聚酰亚胺涂布方法， 通过 将数个相同的圓管形喷嘴紧密平齐的排列成一排， 形成涂布工具， 涂布 时， 同时开启喷嘴， 并移动玻璃基板， 使聚酰亚胺液快速均勾地涂布在玻 璃基板上， 再在刮刀的作用下使聚酰亚胺平面更加平整， 其涂布效果良 好； 本发明液晶显示面板的聚酰亚胺涂布方法简化了涂布工艺和装置， 缩 短了生产时间， 降低了涂布成本。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有的液晶显示面板的聚酰亚胺涂布工艺示意图；
图 2为本发明液晶显示面板的聚酰亚胺涂布方法流程图；
图 3为本发明液晶显示面板的聚酰亚胺涂布工艺示意图。 具体实施方式
为更进一步阐述本发明所釆取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图 2及图 3 , 本发明提供一种液晶显示面板的聚酰亚胺涂布方 法， 其中， 所述液晶显示面板包括薄膜晶体管基板、 与薄膜晶体管基板相 对设置的彩膜基板、 及位于薄膜晶体管基板和彩膜基板之间的液晶分子， 其中薄膜晶体管基板和彩膜基板均具有一玻璃基板， 所述聚酰亚胺涂布该 玻璃基板上， 其涂布方法包括如下步骤：
步骤 1、 提供数根喷嘴 20及玻璃基板 40。
所述数根喷嘴 20具有相同的结构， 在本实施例中， 所述喷嘴 20为圓 管形喷嘴， 所述玻璃基板 40可移动设置， 优选的， 该玻璃基板 40置于传 送带 （未图示）上。
步骤 2、 将该数根喷嘴 20紧密平齐地排列成一整排， 使喷嘴 20的排 列长度与玻璃基板 40的宽度相等。
所述喷嘴 20的排列长度等于玻璃基板 40的宽度， 以保证聚酰亚胺液 60能完全滴落于玻璃基板 40上， 避免涂布不全或滴落于玻璃基板 40外而 造成浪费。
步骤 3、 将该整排喷嘴 20垂直悬置于玻璃基板 40的上方， 且在玻璃 基板 40的宽度方向上与玻璃基板 40对应设置。
所述整排喷嘴 20的外侧边缘与玻璃基板 40的外侧边缘对齐， 避免涂 布不全或滴落于玻璃基板 40外而造成浪费。
步骤 4、 同时开启该数个喷嘴 20, 同时移动玻璃基板 40, 使每一根喷 嘴 20按照设定流量同时将聚酰亚胺液 60快速均勾地滴落在玻璃基板 40 上， 以形成聚酰亚胺薄膜 62。 所述玻璃基板 40移动方向如箭头所示。
所述每一根喷嘴 20具有相同的流量， 该流量大小依据玻璃基板 40的 移动速度及所需涂布的聚酰亚胺薄膜 62的厚度设定； 所述数根喷嘴 20由 一开关 （未图示） 统一控制， 进而使得该些喷嘴 20 同时打开或同时关 闭， 以保证聚酰亚胺液 60 涂布的均勾性， 进而保证液晶显示面板的质 量。
步骤 5、 通过刮刀 80 对均布于玻璃基板 40 上聚酰亚胺薄膜进行修 型， 使玻璃基板 40上的聚酰亚胺薄膜 62表面均勾平整。
所述刮刀 80设于滴有聚酰亚胺液 60的移动玻璃基板 40上方， 所述 刮刀 80长度大于或等于玻璃基板 40宽度， 优选的， 所述刮刀 80长度略 大于玻璃基板 40宽度， 以保证聚酰亚胺薄膜 62表面的均勾性及平整性。
值得一提的是， 还可以通过调节所述刮刀 80与玻璃基板 40的间隙来 控制玻璃基板 40上聚酰亚胺薄膜 62的厚度。
所述刮刀 80为三棱型刮刀。
综上所述， 本发明提供一种液晶显示面板的聚酰亚胺涂布方法， 其简 化了涂布工艺和装置， 缩短了生产时间， 降低了涂布成本； 其通过将数个 相同的圓管形喷嘴紧密平齐地排列成一排， 形成涂布工具， 涂布时， 同时 开启喷嘴， 并移动基板， 使聚酰亚胺液快速均勾地涂布在玻璃基板上， 再 在刮刀的作用下使聚酰亚胺平面更加平整， 其取得了良好的涂布效果。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种液晶显示面板的聚酰亚胺涂布方法， 包括如下步骤： 步骤 1、 提供数根喷嘴及玻璃基板；
步骤 2、 将该数根喷嘴紧密平齐的排列成一整排， 使喷嘴的排列长度 与玻璃基板的宽度相等；
步骤 3、 将该整排喷嘴垂直悬置于玻璃基板的上方， 且在玻璃基板的 宽度方向上与玻璃基板对应设置；
步骤 4、 同时开启该数个喷嘴， 使每一根喷嘴按照设定流量同时将聚 酰亚胺液快速均勾地滴落， 同时移动玻璃基板， 使得聚酰亚胺液均布于玻 璃基板上， 形成聚酰亚胺薄膜；
步骤 5、 通过刮刀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 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述数根喷嘴具有相同的结构。
3、 如权利要求 1 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述喷嘴为圓管形喷嘴。
4、 如权利要求 1 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述数根喷嘴具有相同的流量， 该流量的大小根据玻璃基板的移动速度及 所需涂布的聚酰亚胺薄膜的厚度设定。
5、 如权利要求 1 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述数根喷嘴由一开关统一控制， 进而使得该些喷嘴同时打开或同时关 闭。
6、 如权利要求 1 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述刮刀长度大于或等于玻璃基板宽度， 且该刮刀设于滴有聚酰亚胺液的 移动玻璃基板上方。
7、 如权利要求 6 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述刮刀通过调节其与玻璃基板的间隙来控制玻璃基板上聚酰亚胺薄膜的 厚度。
8、 如权利要求 6 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述刮刀为三棱型刮刀。
9、 如权利要求 1 所述的液晶显示面板的聚酰亚胺涂布方法， 其中， 所述液晶显示面板包括薄膜晶体管基板、 与薄膜晶体管基板相对设置的彩 膜基板、 及位于薄膜晶体管基板和彩膜基板之间的液晶分子， 所述薄膜晶 体管基板与彩膜基板均具有一玻璃基板， 所述聚酰亚胺涂布该玻璃基板 上。
10、 一种液晶显示面板的聚酰亚胺涂布方法， 包括如下步骤： 步骤 1、 提供数根喷嘴及玻璃基板；
步骤 2、 将该数根喷嘴紧密平齐的排列成一整排， 使喷嘴的排列长度 与玻璃基板的宽度相等；
步骤 3、 将该整排喷嘴垂直悬置于玻璃基板的上方， 且在玻璃基板的 宽度方向上与玻璃基板对应设置；
步骤 4、 同时开启该数个喷嘴， 使每一根喷嘴按照设定流量同时将聚 酰亚胺液快速均勾地滴落， 同时移动玻璃基板， 使得聚酰亚胺液均布于玻 璃基板上， 形成聚酰亚胺薄膜；
步骤 5、 通过刮刀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；
其中， 所述数根喷嘴具有相同的结构；
其中， 所述喷嘴为圓管形喷嘴；
其中， 所述数根喷嘴具有相同的流量， 该流量的大小根据玻璃基板的 移动速度及所需涂布的聚酰亚胺薄膜的厚度设定；
其中， 所述数根喷嘴由一开关统一控制， 进而使得该些喷嘴同时打开 或同时关闭；
其中， 所述刮刀长度大于或等于玻璃基板宽度， 且该刮刀设于滴有聚 酰亚胺液的移动玻璃基板上方；
其中， 所述刮刀通过调节其与玻璃基板的间隙来控制玻璃基板上聚酰 亚胺薄膜的厚度；
其中， 所述刮刀为三棱型刮刀；
其中， 所述液晶显示面板包括薄膜晶体管基板、 与薄膜晶体管基板相 对设置的彩膜基板、 及位于薄膜晶体管基板和彩膜基板之间的液晶分子， 所述薄膜晶体管基板与彩膜基板均具有一玻璃基板， 所述聚酰亚胺涂布该 玻璃基板上。
PCT/CN2012/081315 2012-08-24 2012-09-13 液晶显示面板的聚酰亚胺涂布方法 WO2014029147A1 (zh)

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