WO2019119537A1 - 一种配向膜涂布方法及装置 - Google Patents

一种配向膜涂布方法及装置 Download PDF

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Publication number
WO2019119537A1
WO2019119537A1 PCT/CN2018/071264 CN2018071264W WO2019119537A1 WO 2019119537 A1 WO2019119537 A1 WO 2019119537A1 CN 2018071264 W CN2018071264 W CN 2018071264W WO 2019119537 A1 WO2019119537 A1 WO 2019119537A1
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substrate
coating
angle
alignment film
wheel
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PCT/CN2018/071264
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English (en)
French (fr)
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郑俊丰
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武汉华星光电技术有限公司
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Priority to US15/748,493 priority Critical patent/US10884293B2/en
Publication of WO2019119537A1 publication Critical patent/WO2019119537A1/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
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1259—Multistep manufacturing methods
    • H01L27/1292—Multistep manufacturing methods using liquid deposition, e.g. printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present invention relates to the field of display, and in particular to an alignment film coating method and apparatus.
  • a liquid crystal display has been widely used as a display component of an electronic device in various electronic products.
  • LCD liquid crystal display
  • it is required to form an alignment film on an array substrate or a color filter substrate.
  • the main printing mode of the alignment film of the LCD is to use an conventional printing machine to print an alignment liquid (such as PI liquid) to form an alignment film.
  • an alignment liquid such as PI liquid
  • the technical problem to be solved by the present invention is to provide an alignment film coating method and apparatus, which can be applied to an alignment film of different fluidity, which can greatly improve the uniformity of the alignment film, thereby reducing the incidence ratio of the misalignment type Mura of the alignment film. .
  • an aspect of an embodiment of the present invention provides an alignment film coating method including the following steps:
  • Step S10 providing a substrate to be coated with an alignment film, and placing the substrate to be coated with the alignment film on an optical platform;
  • Step S11 step S11, pressing the substrate through a printing wheel having an alignment film printing template, and rolling in a predetermined coating direction, uniformly coating the alignment liquid on the area to be coated of the substrate; During the coating process, the substrate is rotated with the optical platform and has a varying angle with the horizontal plane;
  • Step S12 after the coating of the area to be coated is completed, controlling the optical platform to drive the substrate to vibrate.
  • the alignment liquid on the integral film wheel is transferred to the alignment film printing template of the printing wheel and smoothed by a doctor blade.
  • the predetermined coating direction in the step S11 is a longitudinal direction of each liquid crystal panel in the substrate, and the coating process is applied from a first side to a second side of the substrate.
  • the substrate when the printing wheel is located on the first side of the substrate, the substrate forms a first angle with a horizontal plane; and when the printing wheel is located at the second side of the substrate, the substrate forms a second with a horizontal plane An angle between the substrate and the horizontal plane transitioning from the first angle to the second angle during movement of the printing wheel; wherein the first angle is between -5 degrees and 0 degrees The second angle is between 0 degrees and 5 degrees.
  • the step S12 further includes:
  • the optical platform has a vibration amplitude of 1 to 5 mm, a vibration frequency of 3 to 5 times/second, and a duration of 3 to 5 seconds.
  • the present invention also provides an alignment film coating method comprising the following steps:
  • Step S10 providing a substrate to be coated with an alignment film, and placing the substrate to be coated with the alignment film on an optical platform;
  • Step S11 pressing the substrate by a printing wheel having an alignment film printing template, and rolling in a predetermined coating direction, uniformly coating the alignment liquid on the area to be coated of the substrate; wherein, in the coating During the cloth process, the substrate rotates with the optical platform and forms a varying angle with the horizontal plane;
  • Step S12 after the coating of the area to be coated is completed, controlling the optical platform to drive the substrate to vibrate back and forth along the coating direction of the printing wheel.
  • the alignment liquid on the whole film wheel is uniformly transferred to the alignment film printing template of the printing wheel, and is smoothed by a doctor blade.
  • the predetermined coating direction in the step S11 is a longitudinal direction of each liquid crystal panel in the substrate, and the coating process is applied from a first side to a second side of the substrate.
  • the substrate when the printing wheel is located on the first side of the substrate, the substrate forms a first angle with a horizontal plane; and when the printing wheel is located at the second side of the substrate, the substrate forms a second with a horizontal plane An angle between the substrate and the horizontal plane transitioning from the first angle to the second angle during the rolling of the printing wheel; wherein the first angle is between -5 degrees and 0 degrees The second angle is between 0 degrees and 5 degrees.
  • the optical platform has a vibration amplitude of 1 to 5 mm, a vibration frequency of 3 to 5 times/second, and a duration of 3 to 5 seconds.
  • an alignment film coating apparatus comprising at least:
  • An optical platform that can be rotated up and down around a central portion of the body for placing a substrate on which an alignment film is to be coated;
  • a printing wheel on which an alignment film printing template is mounted, which cooperates with the film forming wheel for receiving an alignment liquid from the filming wheel, and coating the alignment liquid in the predetermined coating direction On the area of the substrate to be coated;
  • a vibration control device configured to control vibration of the optical platform after coating the region to be coated
  • the printing wheel continuously presses against the substrate of the alignment film to be coated and rolls in the coating direction, so that the optical platform and the horizontal plane form a varying angle.
  • a doctor blade for smoothing the alignment liquid on the filming wheel after it is transferred to the alignment film printing template of the printing wheel.
  • the predetermined coating direction is a longitudinal direction of each liquid crystal panel in the substrate, and the coating process is applied from a first side of the optical platform to a second side, a rotation axis of the optical platform Located in its middle position.
  • the optical platform forms a first angle with the horizontal plane when the printing wheel is on the first side of the optical table; the optical platform and the horizontal plane when the printing wheel is located on the second side of the optical platform Forming a second angle; an angle between the optical table and the horizontal plane transitioning from the first angle to the second angle during movement of the printing wheel; wherein the first angle is at -5 degrees Between 0 and 0 degrees, the second angle is between 0 and 5 degrees.
  • the vibration control device controls the optical platform to vibrate back and forth along the coating direction of the printing wheel, and the vibration amplitude is 1 to 5 mm, and the vibration frequency is 3 to 5 times/second. The time is 3 to 5 seconds.
  • the phenomenon of backflow of the alignment film on the short side of the liquid crystal panel and the opposite side of the terminal can be greatly reduced. It can improve the uniformity of the alignment film on the short side terminal side of the liquid crystal panel;
  • the optical platform and the horizontal plane are at a certain angle, and the angle can be adjusted by the pressing amount of the printing wheel, and can be applied to the coating of the alignment liquid of different performances.
  • the alignment liquid with poor ink quantity and fluidity can spread in time within the printing precision range;
  • the optical platform is controlled to vibrate back and forth along the longitudinal direction of the liquid crystal panel, which can greatly improve the uniformity of the alignment film and improve the irregular printing of the alignment film on the edge of the liquid crystal panel.
  • the condition reduces the misalignment of the alignment film and the non-stick phenomenon of the alignment film, and reduces the occurrence probability of the uneven light emission (Mura) phenomenon caused by poor alignment of the alignment film.
  • Mura uneven light emission
  • FIG. 1 is a schematic diagram showing the main flow of an embodiment of an alignment film coating method provided by the present invention
  • FIG. 2 is a partial structural schematic view showing an alignment film coating apparatus according to the present invention in a first state
  • FIG. 3 is a partial structural schematic view of an alignment film coating apparatus according to the present invention in a second state
  • FIG. 4 is a top plan view of an optical table after the coating is completed in an alignment film coating device provided by the present invention.
  • FIG. 1 is a schematic diagram showing the main flow of an embodiment of an alignment film coating method provided by the present invention. As shown in FIG. 2 to FIG. 4, in the embodiment, the method includes the following steps:
  • Step S10 providing a substrate 2 to be coated with an alignment film, and placing the substrate to be coated with the alignment film on an optical table 2 that can be rotated up and down around the middle of the body by a certain angle; specifically, it can be a substrate is placed on the optical table 1;
  • Step S11 providing a printing wheel 11 (P wheel) and a film forming wheel 12 (A wheel), on which the alignment film printing template 15 (APR template) is mounted; the printing wheel 11 and the film The wheel 12 cooperates and receives the alignment liquid from the filming wheel 12, and coats the alignment liquid on the area to be coated of the substrate 2 in a predetermined coating direction; wherein, in the coating process The printing wheel 11 continuously presses against the substrate 2 of the alignment film to be coated, and rolls in a predetermined coating direction to uniformly apply the alignment liquid on the region to be coated of the substrate 2; in the process, Due to the pressing action, the substrate 2 is rotated with the optical table 10 and has a varying angle with the horizontal plane;
  • Step S12 after the coating of the area to be coated is completed, controlling the optical table 10 to drive the substrate 2 to vibrate. Specifically, in one example, after the printing wheel 11 leaves the substrate 2, the The optical table 10 vibrates back and forth along the coating direction of the printing wheel 11; and the optical table has a vibration amplitude of 1 to 5 mm, a vibration frequency of 3 to 5 times/second, and a duration of 3 to 5 seconds.
  • step S11 further comprising:
  • the alignment liquid on the film forming wheel 12 is transferred to the alignment film printing template 15 of the printing wheel 11, and is smoothed by the doctor blade 14.
  • the predetermined coating direction in the step S11 is the long side direction of each liquid crystal panel 20 in the substrate 2, and the coating process is from the first side (such as the right side) of the substrate 2. Apply to the second side (such as the left side).
  • the substrate 2 can be rotated up and down about a rotation axis 100 in the middle of the body thereof by a certain angle. Referring to FIG. 2, when the printing wheel 11 is located on the first side of the optical table 10, the substrate 2 and the optical table 10 are formed by a downward pressure, which forms a horizontal plane.
  • the first angle a it can be understood that, in the embodiment of the present invention, since the substrate 2 and the bottom surface of the optical platform 10 are substantially parallel, only the angle a of the optical platform 10 and the horizontal plane is shown;
  • the substrate 2 and the optical table 10 are subjected to a downward pressure, which forms a second angle b with the horizontal plane;
  • the angle between the substrate 2 and the optical table 10 and the horizontal plane transitions from the first angle a to the second angle b during the coating and movement of the printing wheel 11; in one example, Wherein the first angle a is between -5 degrees and 0 degrees, and the second angle b is between 0 degrees and 5 degrees.
  • the present invention also provides an alignment film coating apparatus which can be combined with FIGS. 2 to 4.
  • the alignment film coating apparatus 1 includes at least:
  • the optical table 10 is rotatable up and down about a central portion of the body thereof for placing the substrate 2 to be coated with the alignment film; in one embodiment, the rotating shaft 100 of the optical table 10 is at its intermediate position;
  • the vibration device 101 is a mechanical device including a vibration motor.
  • the vibration control device 101 can control the optical table 10 to vibrate back and forth along the coating direction, the vibration amplitude is 1 to 5 mm, the vibration frequency is 3 to 5 times/second, and the duration is 3 to 5 seconds;
  • the scraper 14 is configured to perform a smoothing operation on the alignment liquid after the alignment liquid on the film forming wheel 12 is transferred to the alignment film printing template 15 of the printing wheel 11.
  • FIGS. 2 and 3 only the main portions of the alignment film coating device 1 relating to the present invention, other structures of the alignment film coating device 1, such as a frame, a mechanism for driving the frame, etc., are shown in FIGS. 2 and 3.
  • the structure of the integral film wheel and the connection between the printing wheel and the frame, the device for storing the alignment liquid, the pump body for driving the alignment liquid to the nozzle, and the like can be obtained by those skilled in the art in combination with the prior art;
  • the printing wheel 11 continues to press the substrate 2 of the alignment film to be coated with a certain amount of pressing and rolls in the coating direction, so that the optical table 10 and the substrate 2 are An angle that varies from the horizontal.
  • the predetermined coating direction is the long side direction of each liquid crystal panel 20 in the substrate 2, and the coating process is applied from the first side (such as the right side) of the optical table 10 to the second side ( As on the left).
  • the optical table 10 can be rotated up and down about an axis of rotation 100 in the middle of its body. As shown in FIG. 2, when the printing wheel 11 is located on the first side of the optical table 10, the optical table 10 is subjected to a downward pressure, which forms a first angle a with the horizontal plane; As shown in FIG.
  • the optical table 10 forms a second angle b with the horizontal plane under the action of downward pressure;
  • the angle between the optical table 10 and the horizontal plane transitions from the first angle a to the second angle b during the coating and movement of the printing wheel 11; in one example, wherein the first The angle a is between -5 degrees and 0 degrees, and the second angle b is between 0 and 5 degrees.
  • FIG. 4 a schematic top view of an optical platform of an alignment film coating apparatus provided by the present invention after coating is shown.
  • the substrate 2 includes two liquid crystal panels 20, and each liquid crystal panel 20 is provided with a region 200 to be coated, and the alignment film printing template 15 is in contact with the region 200 to be coated, and The coating forms a mating film which is the terminal side 201 outside the region 200 to be coated.
  • the coating direction is the longitudinal direction of the liquid crystal panel 20. It can be understood that when the optical panel 10 is coated in the longitudinal direction and the optical table 10 vibrates in the longitudinal direction, the effect of the backflow of the alignment liquid on the terminal side 201 can be reduced, and the occurrence of the Mura phenomenon on the short side can be reduced. Uniformity of alignment film coating.
  • the phenomenon of backflow of the alignment film on the short side of the liquid crystal panel and the opposite side of the terminal can be greatly reduced. It can improve the uniformity of the alignment film on the short side terminal side of the liquid crystal panel;
  • the optical platform and the horizontal plane are at a certain angle, and the angle can be adjusted by the pressing amount of the printing wheel, and can be applied to the coating of the alignment liquid of different performances.
  • the alignment liquid with poor ink quantity and fluidity can spread in time within the printing precision range;
  • the optical platform is controlled to vibrate back and forth along the longitudinal direction of the liquid crystal panel, which can greatly improve the uniformity of the alignment film and improve the irregular printing of the alignment film on the edge of the liquid crystal panel.
  • the condition reduces the misalignment of the alignment film and the non-stick phenomenon of the alignment film, and reduces the occurrence probability of the uneven light emission (Mura) phenomenon caused by poor alignment of the alignment film.
  • Mura uneven light emission

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Abstract

一种配向膜涂布方法，包括如下步骤：步骤S10、提供一待涂布配向膜的基板（2），并将待涂布配向膜的基板（2）置于一个光学平台（10）上；步骤S11、通过一具有配向膜印刷模板（15）的印刷轮（11）抵压基板（2），并按预定涂布方向滚动，将配向液均匀涂布在基板（2）的待涂布区域上；其中，在涂布过程中，基板（2）随光学平台（10）转动，并与水平面呈一变化的夹角；步骤S12、在对待涂布区域涂布完成后，控制光学平台（10）带动基板（10）振动。可以适用于不同流动性的配向膜，能够大幅提高配向膜的均一性，从而降低配向膜印刷不良类Mura的发生比例。

Description

一种配向膜涂布方法及装置
本申请要求于2017年12月19日提交中国专利局、申请号为201711378183.0、发明名称为“一种配向膜涂布方法及装置”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示领域，特别涉及一种配向膜涂布方法及装置。
背景技术
目前，液晶显示装置(Liquid Crystal Display，LCD)作为电子设备的显示部件已经广泛的应用于各种电子产品中。在LCD的成盒工艺中需要在其阵列基板或彩膜基板上涂布形成一层配向膜。
而在现有技术中，LCD的配向膜主要印刷方式是利用传统印刷机印刷配向液(如PI液)来形成配向膜。但是在现有的涂布配向膜的过程中存在一些不足之处：首先，受配向液流动性强的因素影响，在印刷完成后，容易在液晶面板(panel)的周边，特别是在液晶面板的短边形成配向液堆积，会导致光线不均现象(Mura)；另外，如果配向膜均一性达不到要求，则会导致配向漏印或不粘现象；可以通过提高配向膜的含墨量来实现一定程度的缓解，但是提高配向膜的含墨量又容易降低其流动性。故在现有的配合膜形成技术中，如何降低Mura现象发生的比例以及如何提高产品的生产良率均是急需解决的问题。
发明内容
本发明所要解决的技术问题在于，提供一种配向膜涂布方法及装置，可以适用于不同流动性的配向膜，能够大幅提高配向膜的均一性，从而降低配向膜印刷不良类Mura的发生比例。
为了解决上述技术问题，本发明的实施例的一方面提供一种配向膜涂布 方法，其包括如下步骤：
步骤S10、提供一待涂布配向膜的基板，并将该待涂布配向膜的基板置于一个光学平台上；
步骤S11、步骤S11、通过一具有配向膜印刷模板的印刷轮抵压所述基板，并按预定涂布方向滚动，将配向液均匀涂布在所述基板的待涂布区域上；其中，在所述涂布过程中，使所述基板随所述光学平台转动，并与水平面呈一变化的夹角；
步骤S12、在对所述待涂布区域涂布完成后，控制所述光学平台带动所述基板振动。
其中，进一步包括：
通过喷嘴将所述配向液滴至一整膜轮上；
将所述整膜轮上的配向液转移到所述印刷轮的配向膜印刷模板上，并通过刮刀进行抹平。
其中，所述步骤S11中的预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述基板的第一侧涂布到第二侧。
其中，在所述印刷轮位于所述基板第一侧时，所述基板与水平面形成一个第一角度；在所述印刷轮位于所述基板第二侧时，所述基板与水平面形成一个第二角度；在所述印刷轮移动过程中，所述基板与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
其中，所述步骤S12进一步包括：
控制所述光学平台带动所述基板沿所述印刷轮的涂布方向前后振动；
其中，所述光学平台的振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
相应地，本发明还提供一种配向膜涂布方法，包括如下步骤：
步骤S10、提供一待涂布配向膜的基板，并将该待涂布配向膜的基板置于一个光学平台上；
步骤S11、通过一具有配向膜印刷模板的印刷轮抵压所述基板，并按预定涂布方向滚动，将配向液均匀涂布在所述基板的待涂布区域上；其中，在 所述涂布过程中，所述基板随所述光学平台转动，并与水平面呈一变化的夹角；
步骤S12、在对所述待涂布区域涂布完成后，控制所述光学平台带动所述基板沿所述印刷轮的涂布方向前后振动。
其中，进一步包括：
通过喷嘴将所述配向液滴至一整膜轮上；
将所述整膜轮上的配向液均匀转移到所述印刷轮的配向膜印刷模板上，并通过刮刀进行抹平。
其中，所述步骤S11中的预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述基板的第一侧涂布到第二侧。
其中，在所述印刷轮位于所述基板第一侧时，所述基板与水平面形成一个第一角度；在所述印刷轮位于所述基板第二侧时，所述基板与水平面形成一个第二角度；在所述印刷轮滚动过程中，所述基板与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
其中，所述光学平台的振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
相应地，本发明还提供一种配向膜涂布装置，其至少包括：
光学平台，其可绕其本体中部上下旋转一定角度，用于放置待涂布配向膜的基板；
整膜轮，用于接收配向液；
印刷轮，其上安装有配向膜印刷模板，其与所述整膜轮相配合，用于接收来自整膜轮上的配向液，并将所述配向液沿预定涂布方向涂布在所述基板的待涂布区域上；
振动控制装置，用于在对所述待涂布区域涂布完成后，控制所述光学平台振动；
其中，在涂布过程中，所述印刷轮持续抵压待涂布配向膜的基板并按所述涂布方向滚动，使所述光学平台与水平面呈一变化的夹角。
其中，进一步包括：
喷嘴，用于将所述配向液滴至所述整膜轮上；
刮刀，用于在所述整膜轮上的配向液转移到所述印刷轮的配向膜印刷模板上后，对所述配向液进行抹平。
其中，所述预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述光学平台的第一侧涂布到第二侧，所述光学平台的旋转轴位于其中间位置。
其中，在所述印刷轮位于所述光学平台第一侧时，所述光学平台与水平面形成一个第一角度；在所述印刷轮位于所述光学平台第二侧时，所述光学平台与水平面形成一个第二角度；在所述印刷轮移动过程中，所述光学平台与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
其中，所述步骤S12中，所述振动控制装置控制所述光学平台沿所述印刷轮的涂布方向前后振动，其振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
实施本发明实施例，具有如下有益效果：
首先，在本发明的实施例中，在对基板的待涂布区域按照液晶面板的长边方向进行涂布，可大大降低液晶面板短边的端子侧与端子对侧的配向膜回流聚集现象，可改善液晶面板短边端子侧配向膜均一性；
另外，在本发明的实施例中，光学平台与水平面之间呈一定的角度，且该角度可通过印刷轮的压入量进行调整，可以适用于不同性能的配向液的涂布，对于高含墨量、流动性差的配向液，可以使其在印刷精度范围内的及时扩散；
面且，在本发明的实施例中，在配向膜印刷后，控制光学平台沿液晶面板的长边方向前后振动，可大幅度改善配向膜的均一性，改善液晶面板边缘的配向膜不规则印刷状况，从而减少配向膜漏印及配向膜不粘现象，降低由于配向膜印刷不良而引起的发光不均(Mura)现象的出现概率。
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的前提下，还可以根据这些附图获得其它的附图。
图1是本发明提供的一种配向膜涂布方法的一个实施例的主流程示意图；
图2是本发明提供的一种配向膜涂布装置处于第一状态的局部结构示意图；
图3是本发明提供的一种配向膜涂布装置处于第二状态的局部结构示意图；
图4是本发明提供的一种配向膜涂布装置在涂布完成后的光学平台的俯视示意图。
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，所描述的实施例仅仅是本发明的一部分实施例，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做出创造性劳动的前提下所获得的所有其它实施例，都属于本发明保护的范围。
在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
如图1所示，是本发明提供的一种配向膜涂布方法的一个实施例的主流程示意图。一并结合图2至图4所示，在所述实施例中，所述方法包括如下步骤：
步骤S10、提供一待涂布配向膜的基板2，并将该待涂布配向膜的基板置于一个可绕其本体中部上下旋转一定角度的光学平台2上；具体地，可以通过机械手臂将基板放置到所述光学平台1上；
步骤S11、提供一印刷轮11(P轮)以及整膜轮12(A轮)，所述印刷轮11上安装有配向膜印刷模板15(APR模板)；所述印刷轮11与所述整膜 轮12相配合，并接收来自整膜轮12上的配向液，并将所述配向液沿预定涂布方向涂布在所述基板2的待涂布区域上；其中，在所述涂布过程中，所述印刷轮11持续抵压待涂布配向膜的基板2，并按预定涂布方向滚动，将配向液均匀涂布在所述基板2的待涂布区域上；在此过程中，由于所述抵压作用，使所述基板2随光学平台10转动，并与水平面呈一变化的夹角；
步骤S12、在对所述待涂布区域涂布完成后，控制所述光学平台10带动所述基板2振动，具体地，在一个例子中，在印刷轮11离开基板2后，可控制所述光学平台10沿所述印刷轮11的涂布方向前后振动；且所述光学平台的振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
其中，可以理解的是，在步骤S11的涂布过程中进一步包括：
通过喷嘴13将所述配向液滴至所述整膜轮12上；
将所述整膜轮12上的配向液转移到所述印刷轮11的配向膜印刷模板15上，并通过刮刀14进行抹平。
在一个例子中，所述步骤S11中的预定涂布方向为所述基板2中各液晶面板20的长边方向，所述涂布过程为从所述基板2的第一侧(如右侧)涂布到第二侧(如左侧)。
可以理解的，在具体实施例中，所述基板2可以绕其本体中部的旋转轴100上下旋转一定角度。请结合图2所示，在所述印刷轮11位于所述光学平台10第一侧时，所述基板2和所述光学平台10在受到向下的抵压力的作用下，其与水平面形成一个第一角度a，可以理解的是，在本发明实施例中，由于基板2和所述光光平台10底面基本平行，故只示出了光学平台10与水平面的角度a；如图3所示，在所述印刷轮11位于所述光学平台10第二侧时，所述基板2和所述光学平台10在受到向下的抵压力的作用下，其与水平面形成一个第二角度b；在所述印刷轮11涂布并移动过程中，所述基板2和所述光学平台10与水平面之间的夹角从所述第一角度a过渡到所述第二角度b；在一个例子中，其中所述第一角度a处于-5度～0度之间，所述第二角度b处于0度～5度之间。
相应地，本发明还提供了一种配向膜涂布装置，可以结合图2至图4所示。在所述实施例中，所述种配向膜涂布装置1至少包括：
光学平台10，其可绕其本体中部上下旋转一定角度，用于放置待涂布配向膜的基板2；在一个实施例中，所述光学平台10的旋转轴100位于其中间位置；
整膜轮12，用于接收配向液；
印刷轮11，其上安装有配向膜印刷模板15，其与所述整膜轮12相配合，用于接收来自整膜轮12上的配向液，并将所述配向液沿预定涂布方向涂布在所述基板2的待涂布区域上；
振动控制装置101，用于在对所述待涂布区域涂布完成后，控制所述光学平台10振动，具体地，在一些实施例中，所述振动装置101为包括有振动马达的机械装置；所述振动控制装置101可控制所述光学平台10沿所述涂布方向前后振动，其振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒；
喷嘴13，用于将所述配向液滴至所述整膜轮13上；
刮刀14，用于在所述整膜轮12上的配向液转移到所述印刷轮11的配向膜印刷模板15上后，对所述配向液进行抹平操作。
可以理解的是，在图2和图3中仅示出了配向膜涂布装置1与本发明相关的主要部分，配向膜涂布装置1的其他结构，如机架、驱动机架的机构、整膜轮以及印刷轮与机架之间的连接配合关系、储存配向液的装置、驱动配向液至所述喷嘴中的泵体等结构，本领域的技术人员当可以结合现有的技术获得；
其中，在涂布过程中，所述印刷轮11持续以一定的压入量抵压待涂布配向膜的基板2并按所述涂布方向滚动，使所述光学平台10以及所述基板2与水平面呈一变化的夹角。且所述预定涂布方向为所述基板2中各液晶面板20的长边方向，所述涂布过程为从所述光学平台10的第一侧(如右侧)涂布到第二侧(如左侧)。
可以理解的，在具体实施例中，所述光学平台10可以绕其本体中部的旋转轴100上下旋转一定角度。请结合图2所示，在所述印刷轮11位于所述光学平台10第一侧时，所述光学平台10在受到向下的抵压力的作用下，其与水平面形成一个第一角度a；如图3所示，在所述印刷轮11位于所述光 学平台10第二侧时，所述光学平台10在受到向下的抵压力的作用下，其与水平面形成一个第二角度b；在所述印刷轮11涂布并移动过程中，所述光学平台10与水平面之间的夹角从所述第一角度a过渡到所述第二角度b；在一个例子中，其中所述第一角度a处于-5度～0度之间，所述第二角度b处于0度～5度之间。
如图4所示，示出了本发明提供的一种配向膜涂布装置在涂布完成后的光学平台的俯视示意图。从中可以看出，所述基板2包含了两个液晶面板20，在每一液晶面板20均设置有待涂布的区域200，配向膜印刷模板15与所述待涂布的区域200进行接触，并涂布形成配合膜，在待涂布的区域200之外为端子侧201。涂布方向为所述液晶面板20的长边方向。可以理解的是，沿液晶面板20长边方向涂布，且光学平台10沿长边方向振动时，可减少对端子侧201配向液回流聚集影响，可以降低短边侧Mura现象的出现，大大增加配向膜涂布的均一性。
实施本发明实施例，具有如下有益效果：
首先，在本发明的实施例中，在对基板的待涂布区域按照液晶面板的长边方向进行涂布，可大大降低液晶面板短边的端子侧与端子对侧的配向膜回流聚集现象，可改善液晶面板短边端子侧配向膜均一性；
另外，在本发明的实施例中，光学平台与水平面之间呈一定的角度，且该角度可通过印刷轮的压入量进行调整，可以适用于不同性能的配向液的涂布，对于高含墨量、流动性差的配向液，可以使其在印刷精度范围内的及时扩散；
面且，在本发明的实施例中，在配向膜印刷后，控制光学平台沿液晶面板的长边方向前后振动，可大幅度改善配向膜的均一性，改善液晶面板边缘的配向膜不规则印刷状况，从而减少配向膜漏印及配向膜不粘现象，降低由于配向膜印刷不良而引起的发光不均(Mura)现象的出现概率。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括 一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (15)

  1. 一种配向膜涂布方法，其中，包括如下步骤：
    步骤S10、提供一待涂布配向膜的基板，并将该待涂布配向膜的基板置于一个光学平台上；
    步骤S11、通过一具有配向膜印刷模板的印刷轮抵压所述基板，并按预定涂布方向滚动，将配向液均匀涂布在所述基板的待涂布区域上；其中，在所述涂布过程中，所述基板随所述光学平台转动，并与水平面呈一变化的夹角；
    步骤S12、在对所述待涂布区域涂布完成后，控制所述光学平台带动所述基板振动。
  2. 如权利要求1所述的方法，其中，进一步包括：
    通过喷嘴将所述配向液滴至一整膜轮上；
    将所述整膜轮上的配向液均匀转移到所述印刷轮的配向膜印刷模板上，并通过刮刀进行抹平。
  3. 如权利要求2所述的方法，其中，所述步骤S11中的预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述基板的第一侧涂布到第二侧。
  4. 如权利要求3所述的方法，其特征在于，在所述印刷轮位于所述基板第一侧时，所述基板与水平面形成一个第一角度；在所述印刷轮位于所述基板第二侧时，所述基板与水平面形成一个第二角度；在所述印刷轮滚动过程中，所述基板与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
  5. 如权利要求4所述的方法，其中，所述步骤S12进一步包括：
    控制所述光学平台带动所述基板沿所述印刷轮的涂布方向前后振动；
    其中，所述光学平台的振动幅度为1～5毫米，振动频率为3～5次/秒， 持续时间为3～5秒。
  6. 一种配向膜涂布方法，其中，包括如下步骤：
    步骤S10、提供一待涂布配向膜的基板，并将该待涂布配向膜的基板置于一个光学平台上；
    步骤S11、通过一具有配向膜印刷模板的印刷轮抵压所述基板，并按预定涂布方向滚动，将配向液均匀涂布在所述基板的待涂布区域上；其中，在所述涂布过程中，所述基板随所述光学平台转动，并与水平面呈一变化的夹角；
    步骤S12、在对所述待涂布区域涂布完成后，控制所述光学平台带动所述基板沿所述印刷轮的涂布方向前后振动。
  7. 如权利要求6所述的方法，其中，进一步包括：
    通过喷嘴将所述配向液滴至一整膜轮上；
    将所述整膜轮上的配向液均匀转移到所述印刷轮的配向膜印刷模板上，并通过刮刀进行抹平。
  8. 如权利要求6所述的方法，其中，所述步骤S11中的预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述基板的第一侧涂布到第二侧。
  9. 如权利要求6所述的方法，其中，在所述印刷轮位于所述基板第一侧时，所述基板与水平面形成一个第一角度；在所述印刷轮位于所述基板第二侧时，所述基板与水平面形成一个第二角度；在所述印刷轮滚动过程中，所述基板与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
  10. 如权利要求6所述的方法，其中，所述光学平台的振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
  11. 一种配向膜涂布装置，其中，至少包括：
    光学平台，其可绕其本体中部上下旋转一定角度，用于放置待涂布配向膜的基板；
    整膜轮，用于接收配向液；
    印刷轮，其上安装有配向膜印刷模板，其与所述整膜轮相配合，用于接收来自整膜轮上的配向液，并将所述配向液沿预定涂布方向涂布在所述基板的待涂布区域上；
    振动控制装置，用于在对所述待涂布区域涂布完成后，控制所述光学平台振动；
    其中，在涂布过程中，所述印刷轮持续抵压待涂布配向膜的基板并按所述涂布方向滚动，使所述光学平台与水平面呈一变化的夹角。
  12. 如权利要求11所述的装置，其中，进一步包括：
    喷嘴，用于将所述配向液滴至所述整膜轮上；
    刮刀，用于在所述整膜轮上的配向液转移到所述印刷轮的配向膜印刷模板上后，对所述配向液进行抹平。
  13. 如权利要求11所述的装置，其中，所述预定涂布方向为所述基板中各液晶面板的长边方向，所述涂布过程为从所述光学平台的第一侧涂布到第二侧，所述光学平台的旋转轴位于其中间位置。
  14. 如权利要求13所述的装置，其中，在所述印刷轮位于所述光学平台第一侧时，所述光学平台与水平面形成一个第一角度；在所述印刷轮位于所述光学平台第二侧时，所述光学平台与水平面形成一个第二角度；在所述印刷轮移动过程中，所述光学平台与水平面之间的夹角从所述第一角度过渡到所述第二角度；其中所述第一角度处于-5度～0度之间，所述第二角度处于0度～5度之间。
  15. 如权利要求14所述的装置，其中，所述步骤S12中，所述振动控制装置控制所述光学平台沿所述印刷轮的涂布方向前后振动，其振动幅度为1～5毫米，振动频率为3～5次/秒，持续时间为3～5秒。
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