CN110221484A - 显示面板的制备方法及涂布装置 - Google Patents

显示面板的制备方法及涂布装置 Download PDF

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CN110221484A
CN110221484A CN201910412406.3A CN201910412406A CN110221484A CN 110221484 A CN110221484 A CN 110221484A CN 201910412406 A CN201910412406 A CN 201910412406A CN 110221484 A CN110221484 A CN 110221484A
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frame glue
light source
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liquid crystal
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苑春歌
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to PCT/CN2019/090667 priority patent/WO2020232772A1/zh
Priority to US16/616,499 priority patent/US20210333585A1/en
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1303Apparatus specially adapted to the manufacture of LCDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133305Flexible substrates, e.g. plastics, organic film
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133351Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1339Gaskets; Spacers; Sealing of cells
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1341Filling or closing of cells
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1341Filling or closing of cells
    • G02F1/13415Drop filling process

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Abstract

本发明提供一种显示面板的制备方法及涂布装置,所述显示面板的制备方法依次包括基底设置步骤、框胶层制备步骤、液晶层制备步骤、彩膜基板贴合步骤、固化步骤以及切割步骤;其中,所述框胶层制备步骤包括:涂布步骤,在每一阵列基板的边缘处涂布液态框胶;以及预固化步骤,利用固化光源对所述液态框胶进行初步固化处理,形成框胶层。所述涂布装置包括支架、喷嘴及固化光源。本发明的技术效果在于,防止柔性胶框在破真空时被冲破而导致显示面板报废,提高显示面板的良率。

Description

显示面板的制备方法及涂布装置
技术领域
本发明涉及显示面板领域,特别涉及一种显示面板的制备方法及涂布装置。
背景技术
由于有智能驾驶、智能家电、便携式终端等方面的需求,柔性显示屏在近年来的各大展会上备受关注,被认为是未来显示器的重要发展方向。
柔性显示面板开发技术方向为可弯折、卷曲、不易破损的特性,为了实现柔性即可弯折特性,需要使用柔软性的框胶。因为柔软性框胶脆性小,在基板折叠、弯曲时,框胶也可以折叠、弯曲,不发生裂痕、断裂等现象,进而造成显示面板的损毁等技术问题,因此,所述框胶可增加柔性基板寿命。
TFT-LCD面板,在阵列基板Array和彩膜基板CF两个单板成盒时,会需要框胶(seal)将单板粘合起来,框胶的作用包括:粘接需求,所述框胶用以固定阵列基板Array和彩膜基板CF;密封需求,所述框胶用以保护液晶不和外界水气及杂质接触,防止液晶外流;支撑需求,所述框胶用以涂布特定框胶图案(Seal Pattern),撑住所述框胶图案的边缘间隙(Gap)。
一般环封胶(Loop seal)涂布在大板外围,支撑大板外围的间隙,防止上下板贴合,造成后续切割、裂片异常;主胶框涂布在每一阵列基板的外围,作用如上所述。
但,柔性框胶正因其可弯折、卷曲等特性,在后续的破真空工艺中,易被气流冲破而损毁,导致液晶层外溢,进而报废面板。
发明内容
本发明的目的在于,解决现有技术中柔性显示面板中柔性框胶在破真空时容易被气流冲破导致液晶外溢,进而报废显示面板的技术问题。
为实现上述目的,本发明提供一种显示面板的制备方法,依次包括基底设置步骤、框胶层制备步骤、液晶层制备步骤、彩膜基板贴合步骤、固化步骤以及切割步骤;其中,所述框胶层制备步骤包括:涂布步骤,在每一阵列基板的边缘处涂布液态框胶;以及预固化步骤,利用固化光源对所述液态框胶进行初步固化处理,形成框胶层。
进一步地,在所述基底设置步骤中,在一基底上设置两个以上阵列基板;在所述框胶层制备步骤中,在每一阵列基板的边缘处制备框胶层,围成一环形的框胶腔;在所述液晶层设置步骤中,在每一阵列基板的框胶腔内滴入液晶,形成一液晶层,被所述框胶层环绕;在所述彩膜基板贴合步骤中,在所述液晶层上真空贴合彩膜基板;在所述固化步骤中,利用固化光源和/或热源对所述框胶层再次进行处理;在所述切割步骤中,切割所述基底,所述基底被分割成两个以上显示面板。
进一步地,在所述框胶层制备步骤之前,还包括环胶层制备步骤,在所述基底的边缘处制备环胶层,围成一环胶层腔,所述阵列基板位于环胶层腔内。
进一步地,所述固化光源包括紫外线光源、红外线光源、蓝光光源中的一种。
进一步地,在所述框胶层制备步骤中,所述固化光源与用以喷溅液态框胶的喷头相邻设置;所述固化光源与所述喷头沿着涂布方向同步运动。
进一步地,所述彩膜基板贴合步骤包括以下步骤:彩膜基板覆盖步骤,在所述液晶层上覆盖彩膜基板;抽真空步骤,将所述基底送入真空腔,对所述真空腔做抽真空处理,使得所述彩膜基板与所述液晶层贴合;以及充气步骤,向所述真空腔充入大气。
为实现上述目的,本发明还提供一种涂布装置,包括:支架;喷嘴,设于所述支架一侧;固化光源,设于所述支架的设有所述喷嘴的一侧。
进一步地,所述固化光源包括紫外线光源、红外线光源、蓝光光源中的一种。
进一步地,所述固化光源与所述喷嘴同轴设置。
本发明的技术效果在于,在涂布液态框胶时预固化所述液态框胶,使得所述液态初步固化,形成框胶层,避免所述框胶层在后续的彩膜基板贴合步骤中被气流冲破,导致所述框胶层发生坍塌现象,导致框胶腔内的液晶层外溢,进而损毁显示面板,预固化所述液态框胶,增强所述框胶层的硬度,保护液晶层,提高显示面板的良率。
附图说明
图1为本发明实施例所述的显示面板的制备方法的流程图;
图2为本发明实施例所述彩膜基板贴合步骤的流程图;
图3为本发明实施例所述基底的俯视图;
图4为本发明实施例所述的显示面板的结构示意图;
图5为本发明实施例所述的显示面板的俯视图;
图6为本发明实施例所述的涂布装置涂布时的示意图。
部分组件标识如下:
1、阵列基板;2、环胶层;3、框胶层;4、液晶层;5、彩膜基板;
10、支架;20、喷嘴;30、固化光源。
具体实施方式
以下结合说明书附图详细说明本发明的优选实施例,以向本领域中的技术人员完整介绍本发明的技术内容,以举例证明本发明可以实施,使得本发明公开的技术内容更加清楚,使得本领域的技术人员更容易理解如何实施本发明。然而本发明可以通过许多不同形式的实施例来得以体现,本发明的保护范围并非仅限于文中提到的实施例,下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是附图中的方向,本文所使用的方向用语是用来解释和说明本发明,而不是用来限定本发明的保护范围。
在附图中,结构相同的部件以相同数字标号表示,各处结构或功能相似的组件以相似数字标号表示。此外,为了便于理解和描述,附图所示的每一组件的尺寸和厚度是任意示出的,本发明并没有限定每个组件的尺寸和厚度。
当某些组件,被描述为“在”另一组件“上”时,所述组件可以直接置于所述另一组件上;也可以存在一中间组件,所述组件置于所述中间组件上,且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时,二者可以理解为直接“安装”或“连接”,或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
如图1~6所示,本实施例提供一种显示面板的制备方法,包括以下步骤S1~S7。
S1基底设置步骤,在一基底上设有两个以上阵列基板,所述两个以上阵列基板呈矩阵状排列。
S2环胶层制备步骤,利用如图6所述的涂布装置,在所述基底上表面的边缘处涂布液态环封胶,形成一环胶层,所述环胶层围成一环胶层腔,所述基底上的所有阵列基板都设于所述环胶层腔内。在涂布过程中,喷嘴20用以涂布所述液态环封胶,此时,固化光源30处于关闭状态。
所述环胶层起到支撑作用,支撑所述基底,防止在后续的贴合过程中产生上下两板贴合至一起的现象,造成后续切割步骤中出现切割异常的现象。
S3框胶层制备步骤,在每一阵列基板上设置环形框胶层,所述环形框胶层围成一框胶腔。所述框胶层制备步骤包括涂布步骤及预固化步骤,所述涂布步骤与所述预固化步骤同步执行。
利用如图6所述的涂布装置,喷嘴20用以涂布所述液态框胶,此时,固化光源30处于打开状态,固化光源30与喷嘴20设于支架10的同侧,且固化光源30与喷嘴20为同轴设置,使得喷嘴20在涂布所述液态框胶时,位于涂布方向后方的固化光源30对已涂布的液态框胶进行预固化处理,固化光源30包括紫外线光源、红外线光源、蓝光光源中的一种,使得所述液态框胶初步固化定型,形成框胶层,保证所述框胶层不发生坍塌现象,进一步保证在后续的制程中,所述框胶层不被冲破。
在其他实施例中,固化光源30与喷嘴20可为不同轴设置。
所述框胶层的材质为柔性框胶,满足当前对柔性显示面板的要求。现有技术中,显示面板的制备过程中,在设置完柔性框胶后再进行后续的破真空固化等步骤,这就导致所述柔性框胶容易被大气冲毁,进而导致所述柔性框胶围成的框胶腔内的液晶外流,显示面板损毁。所以在本实施例中,对涂布的液态框胶进行预固化处理,保护所述框胶层。
S4液晶层制备步骤,在每一阵列基板的框胶腔内滴入液晶,形成一液晶层,所述液晶层被所述框胶层环绕。
S5彩膜基板贴合步骤,在所述液晶层上真空贴合彩膜基板,所述彩膜基板贴合步骤具体包括S51~S53。
S51彩膜基板覆盖步骤,在所述液晶层上覆盖彩膜基板,所述彩膜基板的尺寸需大于所述液晶层的尺寸,确保所述液晶层被完全覆盖,防止液晶外流。S52抽真空步骤,将所述基底送入一真空腔,抽真空处理所述真空腔,使得所述彩膜基板与所述液晶层完全贴合。S53充气步骤,向所述真空腔内充入大气。在所述充气步骤中,由于所述框胶层已经预固化后初步定型,所以所述框胶层不受气流影响,可保证液晶不外溢。
S6固化步骤,采用紫外线固化方式及热固化方式固化处理所述框胶层。固化后的基底可参见图3。
S7切割步骤,切割所述基底,形成两个以上显示面板(参见图4~5)。每一阵列基板1与彩膜基板5相对设置,液晶层4设于环形框胶层3围成的框胶腔内。
本实施例的技术效果在于,在涂布液态框胶时预固化所述液态框胶,使得所述液态初步固化,形成框胶层,避免所述框胶层在后续的彩膜基板贴合步骤中被气流冲破,导致所述框胶层发生坍塌现象,导致框胶腔内的液晶层外溢,进而损毁显示面板,预固化所述液态框胶,增强所述框胶层的硬度,保护液晶层,提高显示面板的良率。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。

Claims (9)

1.一种显示面板的制备方法,其特征在于,
依次包括基底设置步骤、框胶层制备步骤、液晶层制备步骤、彩膜基板贴合步骤、固化步骤以及切割步骤;
其中,所述框胶层制备步骤包括:
涂布步骤,在每一阵列基板的边缘处涂布液态框胶;以及
预固化步骤,利用固化光源对所述液态框胶进行初步固化处理,形成框胶层。
2.如权利要求1所述的显示面板的制备方法,其特征在于,
在所述基底设置步骤中,在一基底上设置两个以上阵列基板;
在所述框胶层制备步骤中,在每一阵列基板的边缘处制备框胶层,围成一环形的框胶腔;
在所述液晶层设置步骤中,在每一阵列基板的框胶腔内滴入液晶,形成一液晶层,被所述框胶层环绕;
在所述彩膜基板贴合步骤中,在所述液晶层上真空贴合彩膜基板;
在所述固化步骤中,利用固化光源和/或热源对所述框胶层再次进行处理;
在所述切割步骤中,切割所述基底,所述基底被分割成两个以上显示面板。
3.如权利要求1所述的显示面板的制备方法,其特征在于,
在所述框胶层制备步骤之前,还包括
环胶层制备步骤,在所述基底的边缘处制备环胶层,围成一环胶层腔,所述阵列基板位于环胶层腔内。
4.如权利要求1所述的显示面板的制备方法,其特征在于,
所述固化光源包括紫外线光源、红外线光源、蓝光光源中的一种。
5.如权利要求1所述的显示面板的制备方法,其特征在于,
在所述框胶层制备步骤中,
所述固化光源与用以喷溅液态框胶的喷头相邻设置;
所述固化光源与所述喷头沿着涂布方向同步运动。
6.如权利要求1所述的显示面板的制备方法,其特征在于,
所述彩膜基板贴合步骤包括以下步骤:
彩膜基板覆盖步骤,在所述液晶层上覆盖彩膜基板;
抽真空步骤,将所述基底送入真空腔,对所述真空腔做抽真空处理,使得所述彩膜基板与所述液晶层贴合;以及
充气步骤,向所述真空腔充入大气。
7.一种涂布装置,其特征在于,包括:
支架;
喷嘴,设于所述支架一侧;
固化光源,设于所述支架的设有所述喷嘴的一侧。
8.如权利要求7所述的涂布装置,其特征在于,
所述固化光源包括紫外线光源、红外线光源、蓝光光源中的一种。
9.如权利要求7所述的涂布装置,其特征在于,
所述固化光源与所述喷嘴同轴设置。
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