CN105487302A - 一种液晶涂覆装置及方法 - Google Patents

一种液晶涂覆装置及方法 Download PDF

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CN105487302A
CN105487302A CN201610034957.7A CN201610034957A CN105487302A CN 105487302 A CN105487302 A CN 105487302A CN 201610034957 A CN201610034957 A CN 201610034957A CN 105487302 A CN105487302 A CN 105487302A
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马健
任文明
刘玉东
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BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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Hefei Xinsheng Optoelectronics Technology Co Ltd
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Abstract

本发明涉及液晶面板显示器制造技术领域，公开了一种液晶涂覆装置及方法。该装置包括液晶喷头和气体冷却装置，气体冷却装置位于液晶喷头的后方，且沿液晶喷头的运动轨迹运动。该方法为在液晶涂覆时，气体冷却装置沿着液晶涂覆的轨迹向基板上的已经涂覆的液晶喷出高纯的低温干燥气体，促使液晶迅速降低温度，避免其扩散与封框胶接触。本发明提供的一种液晶涂覆装置及方法，通过对液晶涂覆装置增加与液晶喷头同步运动的气体冷却装置，有效解决现有技术中基板上滴注的液晶扩散速度太快，与封框胶接触后导致溶出型污染，即液晶屏具有周边发黄、具有残像、出现碎亮点等的问题。

Description

一种液晶涂覆装置及方法
技术领域
本发明涉及液晶面板显示器制造技术领域，特别是涉及一种液晶涂覆装置及采用此装置进行液晶涂覆的方法。
背景技术
随着液晶技术的发展，高品质、低功耗、无辐射的薄膜晶体管液晶显示器(TFT-LCD)已成为市场的主流。
在液晶面板制造的成盒工艺中，液晶的填充是一道很至关重要的工序，其方法为：先通过填充装置如喷墨打印设备将液晶填充于阵列基板和彩膜基板之间，再通过封框胶真空贴合，最后切割成单个的液晶面板单元。通常为了降低节拍，液晶和封框胶分别涂覆在不同的基板上。而封框胶在常温下为半透明的胶状物，在基板对合后，需要通过紫外固化和热固化使其内部分子发生交联反应并完全固化。
在目前的工艺中，涂覆在基板上的液晶会向周边尤其沿配向摩擦方向扩散，并且在封框胶完全固化前与之接触，使封框胶的小分子成分等溶出污染液晶，导致面板周边出现显示器亮度不均匀的现象及残像等问题，降低了液晶面板的品质和良率。
为解决上述问题，现有技术中有如下几种解决方式：1、在彩膜基板的周边添加挡墙，该法会导致彩膜基板产生高段差，导致配向摩擦时产生定向摩擦等问题；2、通过改善液晶的抗污染性和封框胶的信赖性来解决该问题，但由于该种理想的材料的很难实现，并且制造成本较高，因此也会导致液晶面板制造的成本的提高。
发明内容
(一)要解决的技术问题
本发明的目的是提供一种液晶涂覆装置及方法，通过对液晶涂覆装置增加与液晶喷头同步运动的气体冷却装置，在液晶涂覆时，气体冷却装置沿着液晶涂覆的轨迹向基板上的已经涂覆的液晶喷出高纯的低温干燥气体，促使液晶迅速降低温度，避免其扩散与封框胶接触，有效解决现有技术中基板上滴注的液晶扩散速度太快，与封框胶接触后导致溶出型污染的问题。
(二)技术方案
为了解决上述技术问题，本发明提供一种液晶涂覆装置及方法。
一种液晶涂覆装置，包括液晶喷头和气体冷却装置，所述气体冷却装置位于所述液晶喷头的后方，且沿所述液晶喷头的运动轨迹运动。
进一步的，前述气体冷却装置包括气路系统和喷气腔体，所述喷气腔体通过所述气路系统与储气装置连通，所述气路系统上设有控制气体流量的流量阀；所述喷气腔体的底部设有狭缝式出气口。
进一步的，所述狭缝式出气口用于喷射低温干燥气体，所述低温干燥气体为氮气或者二氧化碳。
进一步的，还包括口字型机架，所述机架带动所述液晶喷头和气体冷却装置同步运动，所述液晶喷头和气体冷却装置沿其运动方向固定于所述机架的两端。
进一步的，前述液晶喷头和气体冷却装置之间设有隔热挡板，所述隔热挡板沿垂直于所述机架运动的方向固定于所述机架上。
进一步的，前述隔热挡板靠近所述气体冷却装置设置。
进一步的，前述隔热挡板的底边高于所述液晶喷头的喷嘴。
一种液晶涂覆方法，包括如下步骤：
S1、通过液晶喷头向基板上均匀地喷涂设定图案的液晶；
S2、喷涂所述液晶的同时，气体冷却装置沿着所述液晶涂覆的轨迹对液晶进行降温，降低所述液晶的流动性；
S3、对封框胶进行热固化处理，使液晶逐渐升温恢复流动性，填充整个基板。
进一步的，前述步骤S2中，所述气体冷却装置通过狭缝式出气口向所述基板喷出低温干燥气体。
进一步的，前述低温干燥气体为氮气或者二氧化碳。
(三)有益效果
本发明提供的一种液晶涂覆装置，包括液晶喷头和气体冷却装置，气体冷却装置位于液晶喷头的后方，且沿液晶喷头的运动轨迹运动。在液晶涂覆时，气体冷却装置可沿着液晶涂覆的轨迹对基板上的已经涂覆的液晶进行迅速降温，促使液晶迅速降低温度，降低液晶的流动性，避免其扩散与封框胶接触，有效解决现有技术中基板上滴注的液晶扩散速度太快，与封框胶接触后导致溶出型污染的问题。
本发明提供的一种液晶涂覆方法，喷涂液晶的同时，气体冷却装置沿着液晶涂覆的轨迹对液晶进行降温，促使液晶的温度迅速降低，使液晶的流动性快速降低，且使其黏滞系数增加，有效地避免了液晶扩散并与封框胶接触；对封框胶进行热固化处理时，封框胶逐渐固化，使封框胶的抗污染能力显著提升，此时，液晶逐渐升温并恢复流动性，填充整个基板，同时液晶实现均匀的填充，提高液晶涂覆的质量。
本发明提供的一种液晶涂覆方法，可以在不改变产品设计的前提下有效解决液晶扩散过快带来的污染问题，易实现且不影响节拍时间，能够提升产能，同时具有涂覆方法不受产品尺寸的限制、可以广泛适用的优点。
附图说明
图1为本发明实施例一液晶涂覆装置的结构示意图；
图2为本发明实施例二液晶涂覆装置的应用示意图。
图中，1：基板；2：液晶；3：液晶喷头；4：喷嘴；5：机架；6：气体冷却装置；61：喷气腔体；62：狭缝式出气口；63：气路系统；7：低温干燥气体；8：隔热挡板；9：储气装置。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实例用于说明本发明，但不用来限制本发明的范围。
实施例一
如图1所示，本实施例所述的一种液晶涂覆装置，包括用于进行液晶2涂覆的液晶喷头3和用于对已涂覆的液晶2进行冷却的气体冷却装置6，气体冷却装置6位于液晶喷头3的后方，且沿液晶喷头3的运动轨迹运动，液晶喷头3通过其喷嘴4喷出液晶，同时气体冷却装置6对液晶2进行迅速冷却。
气体冷却装置6包括气路系统63和喷气腔体61，喷气腔体61通过气路系统63与储气装置9连通，气路系统63上设有控制气体流量的流量阀，通过气路系统63和流量阀可以调整气体流量的大小以及低温气体的温度等，可实现将低温气体温和地作用于基板1表面的液晶2上，实现了良好的冷却效果。喷气腔体61的底部设有狭缝式出气口62，狭缝式出气口62用于喷射低温干燥气体，采用狭缝式出气口62进行喷气时，可以使气体的喷出方向集中，有利于对液晶2进行迅速降温。储气装置9内存储低温干燥气体7。本实施例中，低温干燥气体7优选为氮气或者二氧化碳，氮气和二氧化碳的成本较低、冷却效果较好，且可以保证低温干燥气体7的温度可在很大范围内选择。
本实施例中，液晶喷头3和气体冷却装置6共同固定于口字型机架5上，机架5带动液晶喷头3和气体冷却装置6同步运动，液晶喷头3和气体冷却装置6沿液晶喷头和气体冷却装置自身的运动方向固定于机架5的两端，保证气体冷却装置6更及时地对液晶2进行冷却。
此外，液晶喷头3和气体冷却装置6之间设有隔热挡板8，隔热挡板8沿垂直于机架5运动的方向固定于机架5上，可以起到阻隔低温干燥气体7的作用，避免低温干燥气体7对液晶喷头3中液晶2温度的影响，保证液晶2的涂覆性。
本实施例中，隔热挡板8靠近气体冷却装置6设置，能更好的起到阻隔低温干燥气体7的作用。隔热挡板8的底边高于液晶喷头3的喷嘴4，防止隔热挡板8接触到基板1表面。
本实施例的液晶涂覆装置的工作原理为：在液晶2涂覆时，气体冷却装置6沿着液晶2涂覆的轨迹，通过狭缝式出气口62往基板1上的液晶2喷出高纯的低温干燥气体7(如氮气或者二氧化碳等)，促使液晶2迅速降低温度，低温下液晶2的流动性迅速降低，且黏滞系数显著增加，有效避免其扩散与封框胶的接触。
实施例二
本实施例所述的一种液晶涂覆方法，采用实施例一所述的一种液晶涂覆装置，该液晶涂覆装置在使用时的示意图如图2所示。
本实施例所述的一种液晶涂覆方法，包括如下步骤：
S1、通过液晶喷头3沿图2中所示的方向向基板1上均匀地喷涂设定图案、数量的液晶2；
S2、喷涂液晶2的同时，气体冷却装置6沿着液晶2涂覆的轨迹对基板1上的液晶2温和地喷出高纯的低温干燥气体7进行降温，降低液晶2的流动性，提高黏滞系数，降低液晶2扩散速度；
S3、对封框胶进行热固化处理，使液晶2逐渐升温恢复流动性，填充整个基板1，提高液晶2涂覆的质量并实现均一的盒厚。
步骤S2中，气体冷却装置6通过狭缝式出气口62向基板1喷出低温干燥气体7，通过低温干燥气体7对液晶2进行冷却，避免对液晶2产生污染，本实施例中优选的，低温干燥气体7为氮气或者二氧化碳，氮气和二氧化碳的成本较低，且其冷却效果较好。
本实施例所述的一种液晶涂覆方法，可以在不改变产品设计的前提下有效解决液晶扩散过快带来的污染问题，易实现且不影响节拍时间，能够提升产能，同时具有涂覆方法不受产品尺寸的限制、可以广泛适用的优点。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

1.一种液晶涂覆装置，其特征在于，包括液晶喷头和气体冷却装置，所述气体冷却装置位于所述液晶喷头的后方，且沿所述液晶喷头的运动轨迹运动。
2.如权利要求1所述的一种液晶涂覆装置，其特征在于，所述气体冷却装置包括气路系统和喷气腔体，所述喷气腔体通过所述气路系统与储气装置连通，所述气路系统上设有控制气体流量的流量阀；所述喷气腔体的底部设有狭缝式出气口。
3.如权利要求2所述的一种液晶涂覆装置，其特征在于，所述狭缝式出气口用于喷射低温干燥气体，所述低温干燥气体为氮气或者二氧化碳。
4.如权利要求1所述的一种液晶涂覆装置，其特征在于，还包括口字型机架，所述机架带动所述液晶喷头和气体冷却装置同步运动，所述液晶喷头和气体冷却装置沿其运动方向固定于所述机架的两端。
5.如权利要求4所述的一种液晶涂覆装置，其特征在于，所述液晶喷头和气体冷却装置之间设有隔热挡板，所述隔热挡板沿垂直于所述机架运动的方向固定于所述机架上。
6.如权利要求5所述的一种液晶涂覆装置，其特征在于，所述隔热挡板靠近所述气体冷却装置设置。
7.如权利要求6所述的一种液晶涂覆装置，其特征在于，所述隔热挡板的底边高于所述液晶喷头的喷嘴。
8.一种液晶涂覆方法，其特征在于，包括如下步骤：
S1、通过液晶喷头向基板上均匀地喷涂设定图案的液晶；
S2、喷涂所述液晶的同时，气体冷却装置沿着所述液晶涂覆的轨迹对液晶进行降温，降低所述液晶的流动性；
S3、对封框胶进行热固化处理，使液晶逐渐升温恢复流动性，填充整个基板。
9.如权利要求8所述的一种液晶涂覆方法，其特征在于，所述步骤S2中，所述气体冷却装置通过狭缝式出气口向所述基板喷出低温干燥气体。
10.如权利要求9所述的一种液晶涂覆方法，其特征在于，所述低温干燥气体为氮气或者二氧化碳。
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