WO2014139250A1 - 取向膜印刷装置 - Google Patents

取向膜印刷装置 Download PDF

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Publication number
WO2014139250A1
WO2014139250A1 PCT/CN2013/078468 CN2013078468W WO2014139250A1 WO 2014139250 A1 WO2014139250 A1 WO 2014139250A1 CN 2013078468 W CN2013078468 W CN 2013078468W WO 2014139250 A1 WO2014139250 A1 WO 2014139250A1
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WO
WIPO (PCT)
Prior art keywords
piston
cylinder
alignment film
vacuum
printing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/078468
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English (en)
French (fr)
Inventor
周永山
赵承潭
李京鹏
林海云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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Application filed by BOE Technology Group Co Ltd, Beijing BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US14/360,155 priority Critical patent/US9242266B2/en
Publication of WO2014139250A1 publication Critical patent/WO2014139250A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/11—Vats or other containers for liquids or other fluent materials
    • B05C11/115—Sealing means for work inlet or outlet
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

Definitions

  • Embodiments of the present invention relate to an oriented film printing apparatus. Background technique
  • the coating of the alignment film is performed by using an alignment film transfer device, specifically, the alignment liquid is sprayed on the transfer roller, the alignment liquid sprayed on the transfer roller is flattened by the doctor blade, and then transferred through the plate and the alignment film.
  • the printing plate coats the alignment liquid on the display area of the substrate.
  • An object of the present invention is to provide an oriented film printing apparatus for improving the coating quality of an alignment film.
  • the present invention provides the following technical solutions:
  • An oriented film printing apparatus comprising at least one printing unit, each of the printing units comprising:
  • a cylinder having an opening at the bottom, and a suction port at the top of the cylinder;
  • a piston disposed in the cylinder for drawing an orientation liquid from the opening into the cylinder; a vacuum degree tester disposed at the suction port to monitor a degree of vacuum above the piston in the cylinder; a range finder disposed in the cylinder to monitor a distance from the piston to a top of the cylinder; and a signal connection with the vacuuming device, the vacuum tester, and the range finder, respectively, for The measured values of the degree tester and the range finder control the control means for drawing in the amount of the aligning liquid in the red body.
  • the piston comprises: a piston body, a sealing layer fixed to the piston body.
  • the piston body is engaged with the sealing layer.
  • the piston further comprises: a protective layer covering the sealing layer.
  • the protective layer is a resin protective layer.
  • the range finder is a laser range finder.
  • the printing unit further includes: a wind deflector disposed in the cylinder and located above the piston, the air deflector having a plurality of ventilation holes.
  • the number of the printing units is plural, and the plurality of printing units are arranged in an array to form an assembly.
  • the alignment film printing apparatus includes at least one printing unit, each printing unit includes: a cylinder having an air suction port, a vacuuming device connected to the air suction port, and a vacuum degree tester disposed at the air suction port, disposed in A piston in the cylinder and a distance meter that monitors the distance between the piston and the top of the cylinder, and a control device that is connected to the vacuuming device, the vacuum tester, and the rangefinder signal, respectively.
  • the vacuum is adjusted by the vacuum device to adjust the degree of vacuum in the cylinder above the piston to adjust the upward and downward movement of the piston.
  • the control device is based on the distance meter and the vacuum tester.
  • the measured value can control the amount of the alignment liquid sucked into the cylinder, thereby controlling the thickness of the alignment film. Therefore, compared with the prior art, the alignment film printing device provided by the present invention can effectively control the edge precision of the alignment film through the opening design of the cylinder body, and at the same time, quantitatively control the alignment liquid by controlling the distance from the piston to the top of the cylinder block. The amount of inhalation can accurately control the film thickness of the alignment film, thereby improving the coating quality of the alignment film. Further, according to the alignment film printing apparatus of the present invention, the alignment film can be applied without a long time of debugging, and the efficiency of coating the alignment film can be improved.
  • FIG. 1 is a schematic structural view of an alignment film printing apparatus according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG.
  • Figure 3 is a schematic view showing the structure of the piston of Figure 2;
  • FIG. 4 is a schematic structural view of another alignment film printing device according to an embodiment of the present invention.
  • the edge precision and thickness control of the alignment film are inaccurate, thereby affecting the coating quality of the alignment film.
  • an embodiment of the present invention provides an alignment film printing apparatus, including at least one printing unit, each printing unit includes: a cylinder having an opening at the bottom, and a pumping port at the top of the cylinder; and pumping connected to the pumping port a vacuum device; a piston disposed in the cylinder for drawing the orientation liquid from the opening; a vacuum degree tester disposed at the suction port to monitor the degree of vacuum above the piston in the cylinder; a distance measuring device for monitoring the distance from the piston to the top of the cylinder; and a signal connection with the vacuuming device, the vacuum tester and the range finder, respectively, for measuring according to the vacuum tester and the range finder The value controls a control device that draws in the amount of the aligning liquid in the red body.
  • the edge design of the cylinder can effectively control the edge precision of the alignment film, and at the same time, by controlling the distance of the piston to the top of the cylinder to quantitatively control the suction amount of the alignment liquid, the film of the alignment film can be accurately controlled. Thick, thereby improving the coating quality of the alignment liquid.
  • an oriented film printing apparatus includes at least one printing unit, each printing unit includes: a cylinder 1 having an opening at the bottom, and a pumping port 11 at the top of the cylinder 1; a vacuuming device (not shown) communicating with the suction port 11; a piston 2 disposed in the cylinder 1 for drawing the orientation liquid from the opening into the cylinder; and being disposed at the suction port 11, a vacuum degree tester 5 for monitoring the degree of vacuum above the piston 2 in the cylinder block 1; a range finder 4 disposed in the cylinder block 1 for monitoring the distance from the piston 2 to the top of the cylinder block 1; and a vacuuming device and a vacuum degree tester, respectively 5 and the range finder 4 signal connection, for controlling the amount of the aligning liquid in the red body 1 according to the measured values of the vacuum degree tester 5 and the range finder 4 (not shown).
  • the alignment film printing apparatus includes at least one printing unit, and each printing unit includes: a cylinder 1 having an air suction port 11, a vacuuming device communicating with the air suction port 11, and a vacuum disposed at the air suction port 11.
  • Degree tester 5 a piston 2 disposed in the cylinder block 1 and a distance measuring device 4 for monitoring the distance between the piston 2 and the top of the cylinder block 1, and signals respectively connected to the vacuuming device, the vacuum degree tester and the range finder Control device.
  • the vacuuming device is used to adjust the degree of vacuum in the cylinder above the piston 2 to adjust the moving distance of the piston 2.
  • the alignment film printing device can effectively control the edge precision of the alignment film through the opening design of the red body, and quantitatively control the inhalation of the alignment liquid by controlling the distance from the piston to the top of the cylinder.
  • the amount of the film can be accurately controlled, and the coating quality of the oriented film can be improved.
  • the alignment film printing apparatus provided by the present invention, the alignment film can be applied without a long time of debugging, and the efficiency of coating the alignment film can be improved; and compared with the conventional alignment film transfer device, The structure is simple and easy to clean.
  • the piston 2 includes a piston main body 21 and a sealing layer 22 fixed to the piston main body 21.
  • the sealing layer 22 is used to ensure the airtightness in the cylinder 1 above the piston 2 during the vacuuming process, and to prevent the leakage of the alignment liquid from being affected by the leakage.
  • the piston body 21 and the sealing layer 22 are engaged and fixed, that is, the piston body 21 and the sealing layer 22 are fixedly coupled in a snap-fit manner.
  • the piston body 21 is provided with a plurality of buckles 24, and a sealing layer.
  • a card slot 25 is provided on the 22 to cooperate with the plurality of buckles 24.
  • the piston body 21 and the sealing layer 22 may be integrally fixed by other means, for example, bonding or screwing or the like.
  • the piston 2 further includes: a protective layer 23 covering the sealing layer 22; the protective layer 23 can effectively prevent the alignment liquid from contaminating the sealing layer 22 during the printing process, and It is also possible to prevent the alignment liquid from being contaminated.
  • the protective layer 23 is a resin protective layer; this resin protective layer is required to not react with the alignment liquid.
  • the above-mentioned range finder 4 may be a laser range finder.
  • the printing unit further includes: a wind deflector 3 disposed in the cylinder block 1 and located above the piston 2, the air deflector 3 having a plurality of ventilation holes. In this way, the uniformity of the force during the operation of the piston can be ensured, that is, the vacuuming process can be ensured evenly, so that the piston moves smoothly.
  • the liquid crystal panel is usually cut into a plurality of small panels by a large panel, and correspondingly, when the substrate is coated with an alignment film, a plurality of alignment films are usually coated on one large substrate. region. Therefore, a plurality of printing units are usually included in an oriented film printing apparatus. For example, a plurality of printing units are arranged in an array to form an assembly. At the time of printing, the combination of the plurality of printing units is simultaneously sucked, and then simultaneously printed to complete the alignment film coating of the entire liquid crystal panel, thereby ensuring uniformity of coating of the entire panel alignment film, thereby further improving the coating quality of the alignment film.
  • the alignment film printing device provided by the embodiment of the present invention can effectively control the edge precision of the alignment film by the opening design of the cylinder, and quantitatively control the suction amount of the alignment liquid by controlling the distance from the piston to the top of the cylinder.
  • the film thickness of the alignment film can be accurately controlled, thereby improving the coating quality of the alignment film.
  • a plurality of printing units are arranged in an array to form an assembly, so that simultaneous inhalation and uniform coating of the assembly can be achieved, thereby ensuring uniformity of coating of the entire panel alignment film; thereby effectively improving the coating quality of the alignment liquid.
  • the alignment liquid can be applied without a long time debugging, and the efficiency of coating the alignment film is improved; and compared with the existing alignment film transfer device,
  • the structure is simple and easy to clean.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Liquid Crystal (AREA)

Abstract

一种用于提高取向膜涂布质量的取向膜印刷装置包括至少一个印刷单元，每一个印刷单元包括：底部具有开口以及顶部具有抽气口（11）的缸体（1）；与抽气口连通的抽真空装置；设置于缸体内，用于将取向液从所述开口吸入缸体内的活塞（2）；设置于抽气口处，监测缸体内活塞上方真空度的真空度测试仪（5）；设置于缸体内，监测活塞到缸体顶部距离的测距仪（4）；以及分别与抽真空装置、真空度测试仪和测距仪信号连接，用于根据真空度测试仪和测距仪的测量值控制吸入所述缸体内取向液量的控制装置。

Description

取向膜印刷装置 技术领域
本发明实施例涉及一种取向膜印刷装置。 背景技术
目前， 取向膜的涂布采用取向膜转印装置完成， 具体是将取向液喷射在 转印辊上， 通过刮刀将喷射在转印辊上的取向液刮平， 然后通过板胴和取向 膜转印板将取向液涂布在基板的显示区域上。
不过，采用上述取向膜转印装置， 因取向膜转印板是由弹性材料制成的， 在转印过程中， 取向膜转印板压在基板上时， 会有弹性变形， 使得取向膜的 边缘精度难以控制， 而且取向膜的厚度控制也不准确， 从而影响取向膜的涂 布质量。 发明内容
本发明的目的在于提供一种取向膜印刷装置， 用于提高取向膜的涂布质 量。
为了实现上述目的， 本发明提供以下技术方案：
一种取向膜印刷装置， 包括至少一个印刷单元， 每一个所述印刷单元包 括：
底部具有开口的缸体， 且所述缸体顶部具有抽气口；
与所述抽气口连通的抽真空装置；
设置于所述缸体内， 用于将取向液从所述开口吸入所述缸体内的活塞； 设置于所述抽气口处，监测所述缸体内活塞上方真空度的真空度测试仪； 设置于所述缸体内， 监测所述活塞到所述缸体顶部距离的测距仪； 以及分别与所述抽真空装置、 真空度测试仪和测距仪信号连接， 用于根 据所述真空度测试仪和测距仪的测量值控制吸入所述紅体内取向液量的控制 装置。
优选地， 所述活塞包括： 活塞主体， 固定在所述活塞主体上的密封层。 优选地， 所述活塞主体与所述密封层卡合固定。
优选地， 所述活塞还包括： 覆盖在所述密封层上的保护层。
较佳地， 所述保护层为树脂保护层。
优选地， 所述测距仪为激光测距仪。
进一步地， 所述印刷单元还包括： 设置于所述缸体内且位于所述活塞上 方的导风板， 所述导风板具有多个通风孔。
优选地， 所述印刷单元数量为多个， 且所述多个印刷单元呈阵列状排列 形成组合体。
在本发明中， 取向膜印刷装置包括至少一个印刷单元， 每个印刷单元包 括： 具有抽气口的缸体， 与抽气口连通的抽真空装置， 设置于抽气口处的真 空度测试仪， 设置在缸体内的活塞和和监测活塞与缸体顶部距离的测距仪， 以及分别与抽真空装置、 真空度测试仪和测距仪信号连接的控制装置。 使用 时， 通过抽真空装置调整位于活塞上方的缸体内的真空度来调整活塞上下移 动， 在活塞向上移动时缸体下部开口可以定量吸入取向液， 控制装置根据测 距仪和真空度测试仪的测量值可以控制吸入缸体内的取向液量， 从而控制取 向膜的厚度。 因此， 与现有技术相比， 采用本发明提供的取向膜印刷装置， 通过缸体的开口设计能够有效控制取向膜的边缘精度， 同时， 通过控制活塞 到缸体顶部的距离来定量控制取向液的吸入量，即可准确控制取向膜的膜厚， 从而提高取向膜的涂布质量。 此外， 采用本发明提供的取向膜印刷装置， 不 需要较长时间调试即可进行涂布取向膜， 提高了涂布取向膜的效率。 附图说明
图 1为本发明实施例提供的一种取向膜印刷装置的结构示意图； 图 2为图 1中 A-A方向剖视图；
图 3为图 2中活塞的结构示意图；
图 4为本发明实施例提供的另外一种取向膜印刷装置的结构示意图。 附图标记：
1-缸体， 2-活塞， 3-导风板， 4-测距仪， 5-真空度测试仪， 11-抽气口， 21-活塞主体， 22-密封层， 23-保护层， 24-卡扣， 25-卡槽。 具体实施方式
采用现有的取向膜装置进行取向膜涂布时， 取向膜的边缘精度和厚度控 制不准确， 从而影响取向膜的涂布质量。
有鉴于此， 本发明实施例提供了一种取向膜印刷装置， 包括至少一个印 刷单元， 每一个印刷单元包括： 底部具有开口的缸体， 且缸体顶部具有抽气 口； 与抽气口连通的抽真空装置； 设置于缸体内， 用于将取向液从所述开口 吸入所述缸体内的活塞； 设置于抽气口处， 监测缸体内活塞上方真空度的真 空度测试仪； 设置于缸体内， 监测活塞到缸体顶部距离的测距仪； 以及分别 与所述抽真空装置、 真空度测试仪和测距仪信号连接， 用于根据所述真空度 测试仪和测距仪的测量值控制吸入所述紅体内取向液量的控制装置。 在本发 明实施例中， 通过缸体的开口设计能够有效控制取向膜的边缘精度， 同时， 通过控制活塞到缸体顶部的距离来定量控制取向液的吸入量， 即可准确控制 取向膜的膜厚， 从而提高取向液的涂布质量。
为了使本领域技术人员更好的理解本发明的技术方案， 下面结合说明书 附图对本发明实施例进行详细的描述。
如图 1、 图 2所示， 本发明实施例提供的取向膜印刷装置， 包括至少一 个印刷单元， 每一个印刷单元包括： 底部具有开口的缸体 1 , 且缸体 1顶部 具有抽气口 11; 与抽气口 11连通的抽真空装置（图中未画出） ； 设置于缸 体 1 内， 用于将取向液从所述开口吸入所述缸体内的活塞 2; 设置于抽气口 11处，监测缸体 1内活塞 2上方真空度的真空度测试仪 5;设置于缸体 1内， 监测活塞 2到缸体 1顶部距离的测距仪 4; 以及分别与抽真空装置、 真空度 测试仪 5和测距仪 4信号连接， 用于根据真空度测试仪 5和测距仪 4的测量 值控制吸入紅体 1内取向液量的控制装置（图中未画出） 。
在本发明实施例中， 取向膜印刷装置包括至少一个印刷单元， 每个印刷 单元包括： 具有抽气口 11的缸体 1 , 与抽气口 11连通的抽真空装置， 设置 于抽气口 11处的真空度测试仪 5,设置在缸体 1内的活塞 2和监测活塞 2与 缸体 1顶部之间距离的测距仪 4, 以及分别与抽真空装置、 真空度测试仪和 测距仪信号连接的控制装置。 使用时， 通过抽真空装置调整位于活塞 2上方 的缸体内的真空度来调整活塞 2的移动距离， 在活塞 2向上移动时缸体 1下 部开口可以定量吸入取向液， 控制装置根据测距仪 4和真空度测试仪 5的测 量值控制吸入缸体 1内的取向液量， 从而控制取向膜的厚度。 与现有技术相 比， 采用本发明提供的取向膜印刷装置， 通过紅体的开口设计能够有效控制 取向膜的边缘精度， 同时， 通过控制活塞到缸体顶部的距离来定量控制取向 液的吸入量， 即可准确控制取向膜的膜厚， 进而提高取向膜的涂布质量。 此 夕卜， 采用本发明提供的取向膜印刷装置， 不需要较长时间调试即可进行涂布 取向膜， 提高了涂布取向膜的效率； 而且与现有的取向膜转印装置相比， 结 构筒单， 清洗方便。
如图 3所示， 具体实施时， 上述活塞 2包括： 活塞主体 21 , 固定在活塞 主体 21上的密封层 22。 如此设置， 通过密封层 22来保证抽真空过程中活塞 2上方的缸体 1内的密闭性， 防止泄露影响取向液吸入量。
例如，上述活塞主体 21与密封层 22卡合固定， 即活塞主体 21与密封层 22以卡合的方式固定连接， 在本实施例中， 活塞主体 21上设置有多个卡扣 24, 密封层 22上设置有与所述多个卡扣 24配合的卡槽 25。 当然， 也可以通 过其他方式将活塞主体 21与密封层 22固定为一体， 例如， 粘结或螺纹连接 等。
为了防止在印刷过程中取向液污染密封层 22, 上述活塞 2进一步包括： 覆盖在密封层 22上的保护层 23;通过保护层 23可以有效防止在印刷过程中 取向液污染密封层 22, 同时， 也可以防止取向液被污染。 例如， 保护层 23 为树脂保护层； 这种树脂保护层要求不能与取向液发生任何反应。
为了保证监测活塞 2到缸体 1顶部距离的准确性， 例如， 上述测距仪 4 可以为激光测距仪。
进一步地， 上述印刷单元还包括： 设置于缸体 1内且位于活塞 2上方的 导风板 3 , 导风板 3具有多个通风孔。 如此设置， 能够保证活塞运行过程中 受力的均一性， 即可以保证抽真空过程均匀， 从而使活塞移动平稳。
如图 4所示， 液晶面板通常是由一个大的面板切割而成多个小的面板， 相应的在对基板进行取向膜涂布时， 通常是在一个大的基板上涂布多个取向 膜区域。 因此， 取向膜印刷装置中通常包括多个印刷单元。 例如， 多个印刷 单元呈阵列状排列形成组合体。 印刷时多个印刷单元的组合体同时吸入， 然 后同时印刷， 完成整张液晶面板的取向膜涂布， 保证整张面板取向膜涂布的 均匀性， 从而进一步提高取向膜涂布质量。 综上所述， 采用本发明实施例提供的取向膜印刷装置， 通过缸体的开口 设计能够有效控制取向膜的边缘精度， 通过控制活塞到缸体顶部的距离来定 量控制取向液的吸入量， 即可准确控制取向膜的膜厚， 从而提高取向膜的涂 布质量。 同时， 多个印刷单元通过阵列状排列形成组合体， 这样可以实现组 合体的同时吸入然后统一涂覆， 保证整张面板取向膜涂布的均匀性； 进而有 效提高取向液的涂布质量。此外，采用本发明实施例提供的取向膜印刷装置， 不需要较长时间调试即可进行涂布取向液， 提高了涂布取向膜的效率； 而且 与现有的取向膜转印装置相比， 结构筒单， 清洗方便。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
1、一种取向膜印刷装置， 包括至少一个印刷单元，每一个所述印刷单元 包括：
底部具有开口的缸体， 且所述缸体顶部具有抽气口；
与所述抽气口连通的抽真空装置；
设置于所述缸体内， 用于将取向液从所述开口吸入所述缸体内的活塞； 设置于所述抽气口处，监测所述缸体内活塞上方真空度的真空度测试仪； 设置于所述缸体内， 监测所述活塞到所述缸体顶部距离的测距仪； 以及 分别与所述抽真空装置、 真空度测试仪和测距仪信号连接， 用于根据所 述真空度测试仪和测距仪的测量值控制吸入所述缸体内取向液量的控制装 置。
2、如权利要求 1所述的取向膜印刷装置，其中所述活塞包括：活塞主体， 固定在所述活塞主体上的密封层。
3、如权利要求 2所述的取向膜印刷装置，其中所述活塞主体与所述密封 层卡合固定。
4、如权利要求 2所述的取向膜印刷装置， 其中所述活塞还包括： 覆盖在 所述密封层上的保护层。
5、如权利要求 4所述的取向膜印刷装置，其中所述保护层为树脂保护层。
6、如权利要求 1所述的取向膜印刷装置，其中所述测距仪为激光测距仪。
7、如权利要求 1-6任一所述的取向膜印刷装置， 其中所述印刷单元还包 括： 设置于所述缸体内且位于所述活塞上方的导风板， 所述导风板具有多个 通风孑
8、如权利要求 1-6任一所述的取向膜印刷装置， 其中所述印刷单元数量 为多个， 且所述多个印刷单元呈阵列状排列形成组合体。
PCT/CN2013/078468 2013-03-15 2013-06-28 取向膜印刷装置 Ceased WO2014139250A1 (zh)

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