WO2014194634A1 - 显示屏的制作方法 - Google Patents

显示屏的制作方法 Download PDF

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Publication number
WO2014194634A1
WO2014194634A1 PCT/CN2013/089449 CN2013089449W WO2014194634A1 WO 2014194634 A1 WO2014194634 A1 WO 2014194634A1 CN 2013089449 W CN2013089449 W CN 2013089449W WO 2014194634 A1 WO2014194634 A1 WO 2014194634A1
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WO
WIPO (PCT)
Prior art keywords
shielding layer
frame glue
array substrate
light shielding
light
Prior art date
Application number
PCT/CN2013/089449
Other languages
English (en)
French (fr)
Inventor
黄华
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/378,129 priority Critical patent/US9488871B2/en
Publication of WO2014194634A1 publication Critical patent/WO2014194634A1/zh

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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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix

Definitions

  • Embodiments of the present invention relate to the field of liquid crystal display manufacturing, and more particularly to a method of fabricating a display screen. Background technique
  • the liquid crystal panel is mainly composed of a color film substrate and an array substrate, and a liquid crystal is filled between the color film substrate and the array substrate, and the liquid crystal is sealed by a frame glue.
  • the process of forming the liquid crystal panel is an important step in the manufacturing process of the liquid crystal display, and the steps include: A, coating the border glass on the first glass substrate; B, dropping on the second glass substrate Note liquid crystal; C, the first glass substrate and the second glass substrate are paired with the box; and, D, after the box is used, the UV (Ultraviolet) light is used to cure the frame glue.
  • the viscous border glue is coated around the liquid crystal cell, and after the frame glue is solidified, the array substrate and the color film substrate can be bonded together, and the liquid crystal filled between the two plates can be prevented from being sealed. Give way.
  • Fig. 1 shows a schematic view of illumination using a UV-curable frame glue, wherein a mask is used to block the UV light that is incident on the effective display area.
  • a mask is used to block the UV light that is incident on the effective display area.
  • the alignment accuracy of the mask is low, and it is difficult to control the horizontal distance dl between the mask and the frame glue.
  • the horizontal distance is too small, which may cause the mask to block the frame glue, affecting the curing of the frame glue, and the horizontal distance is too large.
  • the liquid crystal in the effective display area is irradiated to the inside of the frame glue, and the liquid crystal molecules in the effective display area are destroyed.
  • a gap d2 exists between the reticle and the array substrate in a vertical direction, so that the UV light can illuminate the liquid crystal in the effective display area of the framing glue at a certain angle, thereby destroying the liquid crystal molecules in the effective display area, thereby affecting the display effect of the display screen. And pass rate. Since the requirements for display devices are getting higher and higher, and the distance between the display frame glue and the effective display area is becoming narrower, the problem that the UV light is easily irradiated to the effective display area within the frame glue is increasingly unacceptable. Summary of the invention
  • the technical problem to be solved by the embodiments of the present invention is: reducing the use for fixing in the process of making the display screen The effect of the UV light of the frame glue on the effective display area of the display.
  • an embodiment of the present invention provides a method for manufacturing a display screen.
  • the display screen includes an array substrate and a color filter substrate connected to the box, and the liquid crystal is filled therebetween, and the array substrate and the color film substrate are bordered by the frame.
  • Glue connection the method comprising:
  • the light shielding layer is removed.
  • the light shielding layer is configured to shield a region within the frame glue when the array substrate is irradiated.
  • the frame glue is cured using UV light.
  • the coverage area of the light shielding layer includes a first coverage area and a second coverage area, wherein the first coverage area corresponds to an effective display area of the array substrate, and the second coverage area is between the effective display area and the border glue Zone i or corresponding.
  • the coverage area of the light shielding layer corresponds to the area between the effective display area of the back surface of the array substrate and the frame glue.
  • the material of the light shielding layer is a black positive photoresist, a black negative photoresist or an opaque metal material.
  • the method for setting the light shielding layer includes the steps of:
  • a pattern including a light shielding layer is formed by a patterning process.
  • the light shielding layer is adjacent to the frame glue, or the light shielding layer overlaps with the frame glue.
  • the light shielding layer is disposed in the area inside the frame glue on the back surface of the array substrate, and the light irradiated to the effective display area is effectively blocked during the curing process of the frame glue. Therefore, the liquid crystal molecules in the effective display area are effectively prevented from being destroyed by the UV light, so that the liquid crystal molecules in the effective display area are always in an unilluminated state during the curing process of the frame glue, thereby improving the display effect and the pass rate of the display screen, which is beneficial to The design of the narrow border of the display.
  • FIG. 1 is a schematic view showing the curing of the frame glue of the prior art array substrate of the present invention
  • FIG. 2 is a schematic view showing the curing of the frame glue according to the embodiment of the present invention.
  • FIG. 3 is a top plan view showing the structure of the back surface of the array substrate according to the embodiment of the present invention.
  • FIG. 4 is a top plan view showing the structure of the back surface of the array substrate according to the embodiment of the present invention.
  • FIG. 5 is a side view of the array substrate after the array substrate is completed in the embodiment of the present invention. detailed description
  • Embodiment 1 of the present invention provides a method of manufacturing a display screen.
  • FIG. 2 is a schematic view showing a case where the array substrate and the color filter substrate of the cartridge are irradiated with UV light in the process of curing the frame glue, wherein the arrow indicates the irradiation direction of the UV light in the process of curing the frame glue, and the UV light is The array substrate is irradiated to the array substrate in a direction that is not perpendicular to cure the frame glue, and the UV light corresponding to the position of the frame glue is irradiated onto the frame glue 2 through the array substrate 1 to be cured, and the irradiation is performed at a region where the frame glue is not disposed.
  • the UV light of the effective display area 4 and the area between the effective display area 4 and the frame glue 2 is blocked by the light shielding layer 3, and the UV light will not have any influence on the liquid crystal of the part, thereby ensuring the display of the display screen. Effect and pass rate.
  • a dark layer is set in the area inside the frame glue on the back of the array substrate. area.
  • the one side of the array substrate near the color filter substrate is the front side, and the side away from the color filter substrate is the back side.
  • the light shielding layer generally covers the back surface of the array substrate directly.
  • the material of the light shielding layer may be a black positive photoresist, a black negative photoresist or an opaque metal material.
  • the light shielding layer is used for shielding the area inside the frame glue when the frame glue is cured, that is, when the array substrate provided with the light shielding layer is irradiated. Cover the area inside the entire frame glue.
  • the light-proof layer is adjacent to the frame glue, or the light-shielding layer and the frame glue are slightly overlapped.
  • the thickness of the light shielding layer varies depending on the material. If the light shielding layer is made of black positive photoresist or black negative photoresist, the thickness is about 0.5 ⁇ 5 ⁇ ; if the light shielding layer is made of a metal material, the thickness is 0.2 ⁇ 0.4 ⁇ . Metal materials that can be selected include molybdenum, aluminum or copper. Regardless of the material from which the light-shielding layer is made, the purpose is to block the UV light, and the thickness thereof may be larger than the above range.
  • the intensity of the UV light, the irradiation time, and the like may be set depending on the photoinitiator in the frame glue, and the above contents are all known to those skilled in the art, and thus will not be described in detail herein.
  • the array substrate provided with the light shielding layer is irradiated with UV light.
  • the UV light illuminates the array substrate in a direction that is not perpendicular to the array substrate to cure the frame glue.
  • the UV light corresponding to the position of the frame glue is irradiated onto the frame glue 2 through the array substrate 1 to be solidified, and is irradiated in the area where the frame glue is not disposed, that is, the effective display area 4 and the effective display area 4 and the frame glue 2
  • the UV light in the area between the areas is blocked by the light-shielding layer 3, thereby effectively preventing the liquid crystal molecules in the effective display area 4 from being destroyed by the UV light, thereby changing the properties of the liquid crystal, so that the liquid crystal molecules in the effective display area 4 are cured in the frame glue. It is always in an unexposed state, which improves the display effect and yield of the display.
  • the material of the light-shielding layer can be peeled off by using a corresponding stripping solution. This part is prior art and will not be described here.
  • the frame glue needs to be irradiated with UV light to achieve the curing of the frame glue.
  • the UV light is easily irradiated to the liquid crystal at the edge of the effective display area of the array substrate, thereby causing a change in the properties of the liquid crystal.
  • the light shielding layer is disposed in the area of the back surface of the array substrate, instead of the mask in the prior art, so that there is no gap between the light shielding layer and the array substrate, and between the light shielding layer and the frame glue.
  • the horizontal distance is smaller, so that the liquid crystal in the effective display area can be prevented from changing properties due to the easy exposure of the UV light.
  • the coverage area of the light shielding layer 3 corresponds to the area between the effective display area 4 and the frame glue 2 on the back surface of the array substrate 1.
  • the light shielding layer 3 covers the area between the effective display area 4 on the back surface of the array substrate 1 and the frame glue 2, and the UV light on the light shielding layer 3 is irradiated when the frame glue is cured. Description The light shielding layer is blocked, and the area between the effective display area 4 and the frame glue 2 on the back side of the array substrate 1 cannot be passed, thereby protecting the display screen.
  • the coverage area of the light-shielding layer 3 may also be the entire area within the back cover glue 2 of the array substrate 1, including the first coverage area and the second coverage area, as shown in FIG.
  • the coverage area corresponding to the effective display area 4 is the first coverage area
  • the coverage area corresponding to the area between the effective display area 4 and the frame glue 2 is the second coverage area.
  • the avoidance The light layer 3 covers all the areas inside the back cover glue 2 of the array substrate 1, and the effective display area 4 on the back side of the array substrate 1 is covered with respect to the light shielding layer of FIG. 3, so that the back surface of the array substrate 1 is glued 2 Covering all areas within the shield can better protect the display.
  • the light-shielding layer is adjacent to the frame glue, or the light-shielding layer overlaps slightly with the frame glue.
  • the method for setting the light shielding layer includes the following steps:
  • Step A1 forming a light shielding layer film on the back surface of the array substrate.
  • Step A2 forming a pattern including a light-shielding coverage area by a patterning process.
  • a mask is disposed corresponding to the structure of the frame glue, and the light shielding layer film on the back of the entire array substrate is photolithographically formed by the mask to form a pattern including the first coverage area and the second coverage area.
  • a light shielding layer is disposed before the array substrate is fabricated.
  • a light-proof layer film is formed on the back surface of the array substrate, and then a light-shielding mask is designed according to the pattern of the frame glue and the structure of the effective display area, and the light-shielding layer is exposed by a photolithography process, thereby obtaining a back cover glue of the array substrate.
  • a light-proof layer inside the area Through the lithography process, the light-shielding layer and the frame glue can be disposed adjacent to each other, or the light-shielding layer and the frame glue can be set to slightly overlap. In this way, the horizontal distance dl between the mask shown in Fig. 1 and the frame glue can be eliminated.
  • the frame glue is cured, the UV light of the cured frame glue can be prevented from affecting the liquid crystal material within the effective display area 4.
  • FIG. 5 a side view of the completed array substrate is shown in FIG. 5, wherein the dark layer 3 has all the portions other than the effective display area 4 and the effective display area 4 from the back of the array substrate 1.
  • the occlusion prevents the UV light of the cured frame glue from affecting the liquid crystal material within the effective display area 4.
  • a light-shielding layer is formed on the back surface of the array substrate by photolithography, so that the alignment accuracy of the light-shielding layer is nanometer level, and the mask used in the prior art has a registration accuracy of only 0.1 mm.
  • the method of the invention can greatly improve the alignment precision, reduce the horizontal distance between the light shielding layer and the frame glue, thereby effectively protecting the liquid crystal in the effective display area, and improving the display effect and the pass rate of the display screen. , is conducive to making a narrow bezel display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示屏的制作方法，该方法包括：所述显示屏包括对盒连接的阵列基板（1）和彩膜基板，其间填充有液晶，阵列基板（1）和彩膜基板由边框胶（2）连接，所述方法包括：将边框胶（2）涂覆在所述阵列基板（1）和所述彩膜基板中的一个基板的与另一个基板相对的一面的周边；在所述阵列基板（1）背离所述彩膜基板的一面，在边框胶（2）包围的区域内设置避光层（3）；对设置有避光层（3）的阵列基板（1）进行照射，固化边框胶（2）；去除所述避光层（3）。上述制作方法有效避免了有效显示区（4）内的液晶分子在对盒连接过程中被UV光破坏。

Description

显示屏的制作方法 技术领域
本发明的实施例涉及液晶显示制造领域， 特别涉及一种显示屏的制作方 法。 背景技术
随着液晶显示技术的发展， 具有高品质、 低功耗、 无辐射等优越性能的 薄膜晶体管液晶显示器（TFT-LCD ) 已成为市场主流。 液晶屏主要是由彩膜 基板和阵列基板构成， 并在上述彩膜基板与阵列基板之间填充液晶， 液晶周 边使用边框胶进行密封。 在液晶显示器制造过程中， 液晶屏的成盒工艺是液 晶显示器制造过程中一个重要的步骤， 该步骤包括： A, 在第一玻璃基板上涂 布边框胶； B, 在第二玻璃基板上滴注液晶； C, 将第一玻璃基板和第二玻璃 基板对盒； 以及， D, 对盒后， 使用 UV(Ultraviolet, 紫外线)光对边框胶进行 固化。 在该工艺过程中， 将粘稠状边框胶涂布在液晶盒周围， 待边框胶凝固 后即可将阵列基板和彩膜基板粘合在一起， 并能使填充在两极板间的液晶不 至于泄露。
图 1示出了采用 UV光固化边框胶的光照示意图， 其中， 采用掩模板来 遮挡照射在有效显示区上的 UV光。 但掩模板的对位精度较低， 不易控制掩 模板与边框胶之间的水平距离 dl , 水平距离过小容易造成掩模板对边框胶的 遮挡， 影响边框胶的固化， 水平距离过大 UV光照射到边框胶以内有效显示 区的液晶， 破坏有效显示区内的液晶分子。 另外， 掩模板与阵列基板之间垂 直方向存在间隙 d2, 使得 UV光可以通过一定的角度照射到边框胶以内有效 显示区的液晶， 破坏有效显示区内的液晶分子， 从而影响显示屏的显示效果 和合格率。 由于现在对显示装置的要求越来越高， 显示屏边框胶与有效显示 区的距离越来越窄， 因此 UV光容易照射到边框胶以内的有效显示区的问题 越来越不能接受。 发明内容
本发明的实施例要解决的技术问题是： 在制作显示屏过程中减少用于固 化边框胶的 UV光对显示屏有效显示区的影响。
为解决上述技术问题， 本发明的实施例提供了一种制作显示屏的方法， 所述显示屏包括对盒连接的阵列基板和彩膜基板， 其间填充有液晶， 阵列基 板和彩膜基板由边框胶连接， 所述方法包括：
将边框胶涂覆在所述阵列基板和所述彩膜基板中的一个基板的与另一个 基板相对的一面的周边；
在所述阵列基板背离所述彩膜基板的一面， 在边框胶包围的区域内设置 避光层；
对设置有避光层的阵列基板进行照射， 固化边框胶；
去除所述避光层。
所述避光层用于在对阵列基板照射时对边框胶以内的区域进行遮光。 根据本发明的一个实施例， 采用 UV光对边框胶进行固化。
避光层的覆盖区域包括第一覆盖区和第二覆盖区， 其中所述第一覆盖区 与阵列基板的有效显示区相对应， 所述第二覆盖区与有效显示区与边框胶之 间的区 i或相对应。
所述避光层的覆盖区域与阵列基板背面有效显示区与边框胶之间的区域 相对应。
所述避光层的材料为黑色正性光刻胶、 黑色负性光刻胶或不透光的金属 材料。
所述避光层的设置方法包括步骤：
在所述阵列基板背面形成避光薄膜；
通过构图工艺形成包括避光层的图案。
根据本发明的一个实施例， 所述避光层与所述边框胶毗邻， 或者， 所述 避光层与所述边框胶重叠。
本发明的显示屏的制作方法， 在显示屏制作过程中， 通过在阵列基板背 面边框胶以内的区域设置避光层， 在边框胶固化过程中对照射向有效显示区 的光进行有效地遮挡， 从而有效避免了有效显示区内的液晶分子被 UV光破 坏， 使有效显示区内的液晶分子在边框胶固化过程中始终处于未被照射状态， 提高了显示屏的显示效果和合格率， 有益于显示屏窄边框的设计。 附图说明 为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍， 显而易见地， 下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1是本发明现有技术阵列基板边框胶固化示意图；
图 2是本发明实施例边框胶固化示意图；
图 3是本发明实施例阵列基板背面避光层结构俯视图；
图 4是本发明实施例阵列基板背面避光层结构俯视图； 以及
图 5是本发明实施例阵列基板制作完成后阵列基板侧视图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
实施例 1
本发明实施例 1提供了一种制作显示屏方法。 图 2中示出了在固化边框 胶过程中用 UV光照射对盒的阵列基板和彩膜基板的情况的示意图， 其中， 箭头表示固化边框胶过程中的 UV光的照射方向， UV光以与阵列基板不垂直 的方向照射阵列基板以固化边框胶， 对应边框胶位置处的 UV光透过阵列基 板 1照射在所述边框胶 2上对其固化， 而照射在未设置有边框胶区域处， 即 有效显示区 4以及有效显示区 4与边框胶 2之间的区域的 UV光则被避光层 3 遮挡， UV光将不会对该部分的液晶产生任何影响，从而保证了显示屏的显示 效果和合格率。
本发明实施例提供的制作显示屏的方法包括如下步骤：
S1 : 在边框胶固化前， 在阵列基板背面边框胶以内的区域设置避光层。 域。 阵列基板靠近彩膜基板的一面为正面， 远离彩膜基板的一面为背面。 避 光层一般直接覆盖在所述阵列基板背面。 例如， 避光层的材料可以为黑色正 性光刻胶、 黑色负性光刻胶或不透光的金属材料。 避光层用于在边框胶固化 即对设置有避光层的阵列基板进行照射时对边框胶以内的区域进行遮光， 覆 盖整个边框胶以内的区域。 避光层与边框胶毗邻， 或者避光层与边框胶有些 许的重叠。
该避光层的厚度根据材料不同而不同。 若遮光层由黑色正性光刻胶或黑 色负性光刻胶制成， 其厚度大概为 0.5μηι~5μηι; 若遮光层由金属材料制成， 其厚度为 0.2μηι~0.4μηι。 可以选择的金属材料包括钼、 铝或铜等。 无论避光 层由何种材料制成， 其目的在于遮挡 UV光， 其厚度可以大于上述范围。 UV 光的强度、 照射时间等因素可以根据边框胶中的光引发剂的不同而设定， 由 于以上内容均为本领域技术人员已知， 故在此不再对其进行详细介绍。
S2: 对设置有避光层的阵列基板进行照射， 完成边框胶的固化。
在进行边框胶固化过程中， 用 UV光对设置有避光层的阵列基板进行照 射。 UV光以与阵列基板不垂直的方向照射阵列基板， 以固化边框胶。 对应边 框胶位置处的 UV光透过阵列基板 1照射在所述边框胶 2上使其固化， 而照 射在未设置有边框胶区域处， 即有效显示区 4及有效显示区 4与边框胶 2之 间的区域的 UV光则被避光层 3遮挡， 从而有效避免了有效显示区 4内液晶 分子被 UV光破坏造成液晶的性质改变， 使有效显示区 4内的液晶分子在边 框胶固化过程中始终处于未被照射状态， 提高了显示屏的显示效果和合格率。
S3: 在边框胶固化完成后， 去除所述避光层。
根据避光层材料的不同， 可以采用相应的剥离液对其进行剥离， 该部分 内容为现有技术， 此处不再赘述。
在显示屏的制作过程中， 需要对边框胶进行 UV光照射， 从而实现边框 胶的固化。 现有技术中， 在边框胶的固化过程中， UV光容易照射到阵列基板 有效显示区边缘的液晶， 从而造成液晶的性质改变。 本实施例中， 通过在阵 列基板背面边框胶以内的区域设置避光层， 替代了现有技术中的掩模板， 使 得避光层与阵列基板之间没有间隙， 避光层与边框胶之间的水平距离更小， 从而能够避免有效显示区内的液晶因为受到 UV光容易照射而改变性质。
实施例 2
在对实施例 1的描述的基础上对本实施例进行描述。
本实施例的显示屏的制作方法， 进一步的， 如图 3所示， 所述避光层 3 的覆盖区域对应于阵列基板 1背面的位于有效显示区 4与边框胶 2之间的区 域。 从图 3中可以看到， 避光层 3覆盖了阵列基板 1背面有效显示区 4与边 框胶 2之间的区域， 在固化边框胶时照射在所述避光层 3上的 UV光被所述 避光层遮挡， 无法通过阵列基板 1背面有效显示区 4与边框胶 2之间的区域， 从而达到保护显示屏的作用。
本发明实施例的显示屏的制作方法， 避光层 3 的覆盖区域还可以如图 4 所示， 为阵列基板 1背面边框胶 2以内的全部区域， 包括第一覆盖区和第二 覆盖区， 对应于有效显示区 4的覆盖区域为第一覆盖区， 与有效显示区 4与 边框胶 2之间的区域相对应的覆盖区域为第二覆盖区， 从图 3中可以看到， 所述避光层 3覆盖了阵列基板 1背面边框胶 2以内的全部区域， 相对于图 3 的避光层， 还对阵列基板 1背面的有效显示区 4进行了覆盖， 从而对阵列基 板 1背面边框胶 2以内的全部区域进行遮蔽保护， 能够更好的起到保护显示 屏的作用。
在图 3和图 4所示的情况下， 避光层与边框胶毗邻， 或者， 避光层与边 框胶有些许重叠。
实施例 3
在对实施例 1描述的基础上对本实施例进行描述。
根据本实施例的显示屏的制作方法， 所述避光层的设置方法包括以下步 骤：
步骤 A1 , 在阵列基板背面形成避光层薄膜。
步骤 A2, 通过构图工艺形成包括避光覆盖区域的图案。
对应所述边框胶的结构设置掩模板， 利用所述掩模板对整个阵列基板背 面的避光层薄膜进行光刻， 形成包括第一覆盖区域和第二覆盖区域的图形。
本实施例中， 在制作阵列基板前设置避光层。 首先在阵列基板背面形成 避光层薄膜， 然后根据形成的边框胶的图案及有效显示区的结构设计避光层 掩模板， 通过光刻工艺对避光层进行曝光， 从而得到阵列基板背面边框胶以 内区域的避光层。 通过光刻工艺， 可以将避光层和边框胶设置得毗邻， 或者 可以将避光层和边框胶设置得稍微有些重叠。 通过这种方式， 可以消除图 1 中所示的掩模板与边框胶之间的水平距离 dl。 在固化边框胶时， 可以防止固 化边框胶的 UV光影响有效显示区 4以内的液晶材料。
在阵列基板的正面进行制作完成后，制作完成的阵列基板的侧视图如图 5 所示， 其中， 避光层 3从阵列基板 1背部将有效显示区 4及有效显示区 4以 外的部分区域全部遮挡， 使固化边框胶的 UV光无法对有效显示区 4以内的 液晶材料造成影响。 本实施例中， 通过光刻在阵列基板背面形成避光层， 使得避光层的对位 精度为纳米级别， 而现有技术中采用的掩模板， 其对位精度只有 0.1毫米。 本 发明的方法可以大幅度提高了对位精度， 减小了避光层与边框胶之间的水平 距离， 从而有效地保护了有效显示区内的液晶， 提高了显示屏的显示效果和 合格率， 有利于制作窄边框显示装置。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1. 一种制作显示屏的方法， 所述显示屏包括对盒连接的阵列基板和彩膜 基板， 其间填充有液晶， 阵列基板和彩膜基板由边框胶连接， 所述方法包括： 将边框胶涂覆在所述阵列基板和所述彩膜基板中的一个基板的与另一个 基板相对的一面的周边；
在所述阵列基板背离所述彩膜基板的一面， 在边框胶包围的区域内设置 避光层；
对设置有避光层的阵列基板进行照射， 固化边框胶；
去除所述避光层。
2. 如权利要求 1所述的方法，其中，在对所述阵列基板进行照射过程中， 所述避光层对边框胶以内的区域进行遮光。
3. 如权利要求 1或 2所述的方法， 其中， 采用 UV光对所述边框胶进行 固化。
4. 如权利要求 1至 3中任何一项所述的方法， 其中， 所述避光层的覆盖 区域包括第一覆盖区和第二覆盖区， 其中所述第一覆盖区与有效显示区相对 应， 所述第二覆盖区与有效显示区和边框胶之间的区域相对应。
5. 如权利要求 1至 3中任何一项所述的方法， 其中， 所述避光层的覆盖 区域与阵列基板背面有效显示区与边框胶之间的区域相对应。
6. 如权利要求 1至 5中任何一项所述的方法， 其中， 所述避光层由黑色 正性光刻胶、 黑色负性光刻胶或不透光的金属材料制成。
7. 如权利要求 1至 6中任何一项所述的方法， 其中， 所述避光层的设置 方法包括：
在所述阵列基板背面形成避光薄膜；
通过构图工艺形成包括避光层的图案。
8. 如权利要求 1至 7中任何一项所述的方法， 其中， 所述避光层与所述 边框胶毗邻， 或者， 所述避光层与所述边框胶重叠。
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