WO2014059700A1 - 一种cof基带及其制造方法、液晶显示模组 - Google Patents

一种cof基带及其制造方法、液晶显示模组 Download PDF

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Publication number
WO2014059700A1
WO2014059700A1 PCT/CN2012/083843 CN2012083843W WO2014059700A1 WO 2014059700 A1 WO2014059700 A1 WO 2014059700A1 CN 2012083843 W CN2012083843 W CN 2012083843W WO 2014059700 A1 WO2014059700 A1 WO 2014059700A1
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Prior art keywords
liquid crystal
cof
base tape
alignment marks
alignment
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Application number
PCT/CN2012/083843
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English (en)
French (fr)
Inventor
阙成文
李德华
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/701,529 priority Critical patent/US8994898B2/en
Publication of WO2014059700A1 publication Critical patent/WO2014059700A1/zh

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Classifications

    • 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/4985Flexible insulating substrates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/544Marks applied to semiconductor devices or parts, e.g. registration marks, alignment structures, wafer maps
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544Marks applied to semiconductor devices or parts
    • H01L2223/5442Marks applied to semiconductor devices or parts comprising non digital, non alphanumeric information, e.g. symbols
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544Marks applied to semiconductor devices or parts
    • H01L2223/54426Marks applied to semiconductor devices or parts for alignment
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544Marks applied to semiconductor devices or parts
    • H01L2223/54473Marks applied to semiconductor devices or parts for use after dicing
    • H01L2223/54486Located on package parts, e.g. encapsulation, leads, package substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • COF Chip On Film
  • the COF base tape is usually mounted on a driver of a liquid crystal display device for driving a liquid crystal display device.
  • FIG. 6 it is a schematic structural diagram of a COF baseband in the prior art.
  • the existing COF baseband 9 usually has a copper layer as a registration mark, and the problem of the COF baseband of the structure is:
  • the technical problem to be solved by the present invention is to provide a COF base tape, a manufacturing method thereof, and a liquid crystal display module, which can enhance the strength of the edge of the COF base tape and improve the alignment accuracy and operability of the COF base tape and the liquid crystal glass. Can save process materials and reduce process costs.
  • a technical solution adopted by the present invention is: providing a COF baseband, the COF baseband including at least: a connection pin for connecting a connection terminal of the liquid crystal glass;
  • the alignment marks are respectively disposed on both sides of the connection pin, and are used for overlapping alignment with the mark provided by the connection terminal, and the area where the alignment mark is located is set to be transparent;
  • the alignment mark located on either side of the connecting arch I is set to at least one.
  • each of the alignment marks has a shape of a circle, a cross, a triangle, a trapezoid or a convex shape.
  • the alignment marks on either side of the connecting pin are two, one of which has a circular shape and the other has a convex shape.
  • the centers of the two alignment marks on either side of the connection pin are arranged on the same straight line.
  • connection pin The alignment marks on both sides of the connection pin are arranged symmetrically.
  • Another technical solution adopted by the present invention is: Providing a manufacturing method for manufacturing the above COF base tape, comprising at least the following steps:
  • the metal layers on both sides of the COF base tape are respectively etched to obtain a transmissive alignment mark for coincident alignment with the mark on the connection terminal of the liquid crystal glass.
  • the metal layer is a copper layer, and the step of etching the metal layers on both sides of the COF base tape respectively includes:
  • a liquid crystal display module comprising at least a liquid crystal glass and a COF base tape, the liquid crystal glass having a connection terminal, and two sides of the connection terminal are provided Marking, the COF base tape has a connection pin for connecting the connection terminal, and a position at a position connectable to the connection terminal is provided on both sides of the connection pin Recording the coincident opaque alignment mark;
  • the alignment mark located on either side of the connecting arch I is set to at least one.
  • each of the alignment marks has a shape of a circle, a cross, a triangle, a trapezoid or a convex shape.
  • each of the alignment marks has a shape of a circle, a cross, a triangle, a trapezoid or a convex shape.
  • the alignment marks on either side of the connecting pin are two, one of which has a circular shape and the other has a convex shape.
  • connection pin The alignment marks on both sides of the connection pin are arranged symmetrically.
  • the COF base tape provided by the present invention, the manufacturing method thereof and the liquid crystal display module have the following beneficial effects: Since the area where the alignment mark is located on both sides of the connecting pin is made transparent, the light-transmitting alignment mark is applied. The mark of the quasi-liquid crystal glass connection terminal. The high-density bonding of the COF base tape and the liquid crystal glass is realized, and the alignment accuracy and the operability are improved. A copper layer is left around the alignment mark to enhance the strength of the edge of the COF baseband and prevent edge peeling and curling of the COF base tape. In addition, the smaller area of the etch as the alignment mark can save process materials and reduce process costs.
  • Fig. 2 is a schematic enlarged view showing the area A of the COF base tape shown in Fig. 1 according to the embodiment of the present invention.
  • 3 is a schematic structural view of a liquid crystal display module according to an embodiment of the present invention.
  • FIG. 4 is a schematic view showing the structure of the liquid crystal display module of the embodiment of the present invention before the C-region COF base tape is connected to the liquid crystal glass as shown in FIG.
  • FIG. 5 is a schematic structural view of a liquid crystal display module according to an embodiment of the present invention, in which a C-region COF base tape is connected to a liquid crystal glass, as shown in FIG.
  • Fig. 6 is a schematic view showing the structure of a COF base tape in the prior art. detailed description
  • FIG. 1 and FIG. 2 is a first embodiment of the COF base tape of the present invention.
  • the COF base tape 1 of the present embodiment is mainly composed of a connection pin 11, a circuit chip 12, and an input terminal wiring (not shown) and an output terminal wiring (not shown) which are respectively connected to the connection pin 11 and the circuit chip 12.
  • FIG. 1 is a schematic structural diagram of a COF baseband according to an embodiment of the present invention, wherein:
  • connection pin 11 enables high-density connection to the liquid crystal glass connection terminal by the alignment mark.
  • the alignment marks are respectively disposed on the left and right sides of the connection pin 11 as shown. The following is an example of the alignment mark on the side of the connection pin to illustrate its structure.
  • FIG. 2 a schematic diagram of an enlarged structure of the A region of the COF base tape shown in Fig. 1 is shown in Fig. 1.
  • the above-mentioned alignment mark 13 is set to two, which are a circular alignment mark 13a and a convex-shaped alignment mark 13b.
  • the two alignment marks 13a, 13b are arranged on the same straight line from top to bottom, and the area where the two are located (the area shown in a circular shape and a convex shape) is set to transmit light.
  • the underside of the alignment marks 13a, 13b can be clearly observed through the light-transmitting region. That is It can be said that when the connecting pin 11 is engaged with the connecting terminal, the accurate alignment of the COF base tape and the liquid crystal glass can be realized by observing whether the alignment marks 13a, 13b are accurately aligned with the mark provided at the connecting terminal below it.
  • a copper layer for reinforcing the strength of the COF base tape is laid around the alignment marks 13a, 13b.
  • the copper layer 14 disposed on both sides of the connection pin 11 can prevent problems such as edge peeling and curling of the COF base tape; the quality of the COF base tape can be further improved.
  • connection pin 11 is disposed in the B region (right side) as shown in FIG. 1, and is provided with two alignment marks which are also arranged from top to bottom and have the same shape as the above-described alignment marks 13a, 13b ( The figure is not shown), and a copper layer is also provided around it, and the function is the same as that of the alignment marks 13a, 13b in the area A.
  • the central axes of the alignment marks on each side of the connection pin 11 are arranged on the same straight line, or the alignment marks on both sides are set to be symmetrical:
  • the alignment marks on both sides of the connection pin 11 may not be set to be symmetrical; the alignment marks on each side of the connection pin 11 may be set to only one or two, and each
  • the shape of an alignment mark is also not limited to the circular or convex shape in the above embodiment, and may be set to a shape of a cross, a triangle, a trapezoid or a common polygon as long as it satisfies the shape of the corresponding mark on the connection terminal. It can be adapted.
  • a cross-shaped alignment mark and a mark may be respectively disposed on one side of the connection pin 11 and the connection terminal, and three circular and triangular shapes are respectively disposed on the other side of the connection pin 11 and the connection terminal.
  • the square alignment mark and mark do not affect the alignment effect of the COF base tape and the liquid crystal glass.
  • the alignment marks 13a, 13b in this embodiment can be obtained by etching the copper layer 14.
  • the alignment marks 13a, 13b in this embodiment can be obtained by etching the copper layer 14.
  • the metal layers on both sides of the COF base tape are respectively etched to obtain a light-permeable liquid and liquid
  • the crystal glass has a mark on the connection terminal to coincide with the alignment mark of the alignment.
  • the metal layer is a copper layer 14 disposed on both sides of the COF base tape, that is, the COF base tape has a position on both sides of the connecting pin 11, and the copper layer 14 functions to strengthen the strength of the COF base tape, and can satisfy the engraving. Process requirements for the etch process. Of course, it can also be set to other common metal layers having the above effects.
  • the step of etching the metal layer, using the etched region as the alignment mark can obtain not only the alignment marks 13a, 13b for the coincidence alignment, but also ensure that the alignment marks 13a, 13b have a certain light transmittance, and The copper layer 14 around the alignment marks 13a, 13b is retained to the utmost extent.
  • the light transmittance of the alignment mark enables precise alignment of the COF base tape and the liquid crystal glass by observing whether or not the alignment marks 13a, 13b are accurately aligned with the marks provided at the connection terminals located thereunder.
  • Retaining the copper layer around the alignment marks 13a, 13b 14, enhances the strength of the COF baseband edge, and prevents problems such as edge peeling and curling of the COF base tape.
  • a smaller etched area saves process materials and reduces process costs.
  • At least one alignment mark needs to be etched on each side of the copper layer 14 to achieve accurate alignment of the COF base tape and the liquid crystal glass.
  • two or more alignment marks may be etched on each side, and the shape of each of the alignment marks includes a common shape such as a circle, a cross, a triangle, a trapezoid or a chevron;
  • the etched alignment mark can quickly observe the mark on the connection terminal below it, and can be quickly adjusted until it is overlapped, and the bonding efficiency of the COF base tape and the liquid crystal glass can be improved.
  • the invention also discloses a liquid crystal display module comprising a COF base tape 1 and a liquid crystal glass 2.
  • a liquid crystal display module of the present invention the liquid crystal glass 2 is provided with a connection terminal in the C area as shown in FIG. 3, and the COF base tape 1 is realized by high-density precise bonding of the connection pin 11 and the connection terminal. The connection of the liquid crystal glass.
  • FIG. 4 it is a schematic structural view of the liquid crystal display module of the present invention before the C-region COF baseband and the liquid crystal glass are connected as shown in FIG.
  • the connection terminal 21 is as shown in the figure
  • the mark on the right is not shown).
  • the shape of the mark 22 corresponds to the shape of the alignment marks 13a, 13b on the COF base tape 1.
  • the two marks 22a, 22b are a circular alignment mark 22a and a convex-shaped alignment mark 22b, and the areas where the two marks 22a, 22b are located are opaque, and the surface area ratio is aligned.
  • the surface area of the marks 13a, 13b is slightly smaller.
  • the liquid crystal display module of the present invention adopts the COF baseband having the above-mentioned light transmitting structure, and the specific implementation manner is the same as that of the COF baseband, and details are not described herein again.
  • the COF base tape of the present invention, the manufacturing method thereof, and the liquid crystal display module are arranged such that the area where the alignment mark is located on both sides of the connection pin is made transparent, and the liquid crystal glass connection terminal is aligned through the permeable mark. mark.
  • High-density bonding of COF base tape and liquid crystal glass is achieved, which improves alignment accuracy and operability.
  • a copper layer is left around the alignment mark to enhance the strength of the edge of the COF baseband and prevent edge peeling and curling of the COF base tape.
  • the smaller area of the etch as a align mark saves process materials and reduces process costs.

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Abstract

一种COF基带,至少包括:连接引脚(11),用以连接液晶玻璃具有的连接端子(21);对位标记(13),分别设置在所述连接引脚(11)的两侧,用以与所述连接端子(21)具有的标记(22)进行重合对位,所述对位标记(13)所在的区域设为透光。一种制造上述COF基带的制造方法以及液晶显示模组。实施COF基带及其制造方法、液晶显示模组,增强了COF基带边缘的强度,提高了COF基带与液晶玻璃接合的对位精确度和可操作性。能够节省工艺材料,降低工艺成本。

Description

一种 COF基带及其制造方法、 液晶显示模组 本申请要求于 2012 年 10 月 18 日提交中国专利局、 申请号为 201210397127.2、发明名称为 "一种 COF基带及其制造方法、液晶显示模组" 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
本发明涉及液晶显示领域, 尤其涉及一种 COF基带及其制造方法、 液 晶显示模组。 背景技术
COF ( Chip On Film, 芯片软膜封装技术)广泛应用于液晶显示领域。
COF基带通常搭载于液晶显示装置的驱动器上, 用于驱动液晶显示装置。
由于 COF接合到液晶玻璃需要高密度接合, 因此, 需要在 COF与液晶 玻璃连接处的两侧分别设置对位标记用以确认 COF基带是否已经与液晶玻 璃精确对位。
如图 6所示, 为现有技术中 COF基带的结构示意图。 现有的 COF基带 9通常以铜层作为对位标记, 该结构的 COF基带存在的问题是:
1、 COF边缘的强度低, 经常出现 COF边缘剥离、 卷翘的现象。
2、 对位标记 91表面铺铜, 很难确认液晶玻璃上的标记, 造成对位困 难。 发明内容
本发明所要解决的技术问题在于, 提供一种 COF基带及其制造方法、 液晶显示模组, 能够增强 COF基带边缘的强度, 提高 COF基带与液晶玻璃 接合的对位精确度和可操作性。 能够节省工艺材料, 降低工艺成本。
为了解决上述技术问题, 本发明采用的一种技术方案是: 提供一种 COF 基带, 所述 COF基带至少包括: 连接引脚, 用以连接液晶玻璃具有的连接端子;
对位标记, 分别设置在所述连接引脚的两侧, 用以与所述连接端子具有 的标记进行重合对位, 所述对位标记所在的区域设为透光;
位于所述连接弓 I脚任一侧的所述对位标记至少设为一个。
其中, 所述对位标记的周围铺设用以加强所述 COF基带强度的铜层。 其中, 所述每一个对位标记的形状为圆形、 十字形、 三角形、 梯形或凸 字形。
其中, 位于所述连接引脚任一侧的所述对位标记设为两个, 其中一个的 形状为呈圆形, 另一个的形状呈凸字形。
其中,位于所述连接引脚任一侧的所述两个对位标记的中心排列在同一 直线上。
其中,位于所述连接引脚任一侧的所述全部对位标记的中心轴线在同一 直线上。
其中, 所述连接引脚两侧的所述对位标记排布为对称。
为解决上述技术问题, 本发明采用的另一种技术方案是: 提供一种制造 上述的 COF基带的制造方法, 至少包括以下步骤:
对位于 COF基带两侧的金属层分别进行刻蚀, 获取可透光的用以与液 晶玻璃具有的连接端子上的标记进行重合对位的对位标记。
其中, 所述金属层为铜层, 所述对位于 COF基带两侧的金属层分别进 行刻蚀的步骤包括:
在 COF基带任一侧的铜层上刻蚀至少一个形状为圆形、 十字形、 三角 形、 梯形或凸字形的对位标记的步骤。
其中, 在 COF基带两侧的铜层上刻蚀得到的对位标记排布为对称。 其中,位于所述连接引脚任一侧的所述全部对位标记的中心轴线在同一 直线上。
为解决上述技术问题, 本发明采用的另一种技术方案是: 提供一种液晶 显示模组, 至少包括液晶玻璃和 COF基带, 所述液晶玻璃具有连接端子, 所述连接端子的两侧设有标记, 所述 COF基带具有用以连接所述连接端子 的连接引脚, 在所述连接引脚的两侧设有位置可与所述连接端子的所述标 记对应重合的可透光的对位标记;
透过所述可透光的对位标记对准所述连接端子的所述标记, 并将所述
COF基带的所述连接弓 I脚连接在所述液晶玻璃的所述连接端子上;
位于所述连接弓 I脚任一侧的所述对位标记至少设为一个。
其中, 所述对位标记的周围铺设用以加强所述 COF基带强度的铜层。 其中, 所述每一个对位标记的形状为圆形、 十字形、 三角形、 梯形或凸 字形。
其中, 所述对位标记的周围铺设用以加强所述 COF基带强度的铜层。 其中, 所述每一个对位标记的形状为圆形、 十字形、 三角形、 梯形或凸 字形。
其中, 位于所述连接引脚任一侧的所述对位标记设为两个, 其中一个的 形状为呈圆形, 另一个的形状呈凸字形。
其中,位于所述连接引脚任一侧的所述两个对位标记的中心排列在同一 直线上。
其中,位于所述连接引脚任一侧的所述全部对位标记的中心轴线在同一 直线上。
其中, 所述连接引脚两侧的所述对位标记排布为对称。
本发明所提供的 COF基带及其制造方法、 液晶显示模组, 具有如下有 益效果: 由于连接引脚两侧对位标记所在的区域设为透光, 透过可透光的对 位标记实施对准液晶玻璃连接端子的标记。 实现了 COF基带与液晶玻璃的 高密度接合, 提高了对位精确度和操作性。 对位标记的周围保留有铜层, 可 以增强 COF基带边缘的强度, 防止 COF基带出现边缘剥离、 卷翘等问题。 此外,通过刻蚀的较小区域作为对位标记能够节省工艺材料,降低工艺成本。 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筒单地介绍, 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他的附图。 图 1是本发明实施例 COF基带的结构示意图。
图 2是本发明实施例 COF基带如图 1所示 A区域的放大结构示意图。 图 3是本发明实施例液晶显示模组的结构示意图。
图 4是本发明实施例液晶显示模组如图 3所示 C区域 COF基带与液晶 玻璃连接前的结构示意图。
图 5是本发明实施例液晶显示模组如图 3所示 C区域 COF基带与液晶 玻璃连接后的结构示意图。
图 6是现有技术中 COF基带的结构示意图。 具体实施方式
下面参考附图对本发明的优选实施例进行描述。
请结合图 1和图 2所示, 为本发明 COF基带的第一实施例。
本实施例的 COF基带 1主要由连接引脚 11、电路芯片 12以及分别与连 接引脚 11和电路芯片 12连接的输入端布线(图未示)和输出端布线(图未 示 )组成。
参见图 1 , 为本发明实施例 COF基带的结构示意图, 其中:
连接引脚 11设置在 COF基带如图所示的上下两端, 其在具体实施时可 以是 COF基带的输入端子, 也可以是 COF基带的输出端子。
连接引脚 11分别通过输入端布线(图未示)和输出端布线(图未示) 与设置在 COF基带中部的电路芯片 12相连。
连接引脚 11可通过对位标记实现与液晶玻璃连接端子的高密度连接。 具体到本实施例中, 对位标记分别设置在连接引脚 11如图所示的左右两侧。 以下以位于连接引脚一侧的对位标记为例, 说明其结构。
参见图 2, 为本实施例 COF基带如图 1所示 A区域的放大结构示意图。 上述对位标记 13设为两个, 分别为呈圆形的对位标记 13a和呈凸字状的对 位标记 13b。 两对位标记 13a, 13b由上至下排列在同一直线上, 且两者所在 的区域(图示呈圆形和呈凸字状的区域)设为透光。
将对位标记 13a, 13b设为透光的作用是:
可以透过该透光区域清晰的观察到对位标记 13a, 13b的下方。 也就是 说, 当连接引脚 11与连接端子接合时, 可通过观察对位标记 13a, 13b与位 于其下方连接端子具有的标记是否精确对准, 实现 COF基带与液晶玻璃的 精准对位。
进一步, 对位标记 13a, 13b的周围铺设用以加强 COF基带强度的铜层
14。
设置在连接引脚 11两侧的铜层 14可以防止 COF基带出现边缘剥离、 卷翘等问题; 可进一步提升 COF基带的品质。
本实施例中, 连接引脚 11在如图 1所示的 B区域(右侧), 设置同样由 上至下排列的, 并与上述对位标记 13a, 13b形状相同的两个对位标记(图 未示 ), 其周围同样设有铜层, 且功能与区域 A中对位标记 13a, 13b的功能 相同。
将连接引脚 11每一侧的对位标记的中心轴线设置在同一直线上, 或两 侧的对位标记设为对称的作用是:
可以快速地观察对位标记与位于其下方连接端子具有的标记是否精确 对准。 在未能对准的情况下, 能够快速的调整直至重合, 进而提升 COF基 带与液晶玻璃的结合效率。
本发明 COF基带的其他实施例中, 连接引脚 11两侧的对位标记也可不 设为对称; 在连接引脚 11每一侧的对位标记可以仅设置为一个或两个以上, 且每一个对位标记的形状也并不限定在上述实施方式中的圆形或凸字形,其 也可以设置为十字形、 三角形、 梯形或常见多边形的形状, 只要满足其与连 接端子上相应标记的形状相适配即可。
例如, 可以在连接引脚 11和连接端子的一侧分别设置一个呈十字形的 对位标记和标记, 在连接引脚 11和连接端子的另一侧设置三个分别呈圆形、 呈三角形和呈方形的对位标记和标记, 并不影响 COF基带与液晶玻璃的对 位效果。
本实施例中的对位标记 13a, 13b可通过刻蚀铜层 14得到, 具体请参见 下述本发明 COF基带的制造方法。
本发明 COF基带的制造方法, 至少包括以下步骤:
对位于 COF基带两侧的金属层分别进行刻蚀, 获取可透光的用以与液 晶玻璃具有的连接端子上的标记进行重合对位的对位标记。
本实施例中,金属层为设置在 COF基带两侧的铜层 14, 也就是 COF基 带具有连接引脚 11两侧的位置上, 铜层 14的作用是加强 COF基带的强度, 且能够满足刻蚀工艺的工艺需求。 当然, 其也可以设置为具有上述功效的其 他常见金属层。
对金属层进行刻蚀的步骤, 以刻蚀的区域作为对位标记, 不但可以获得 用于重合对准的对位标记 13a, 13b, 保证对位标记 13a, 13b具有一定的透 光性, 而且最大限度的保留了对位标记 13a, 13b周围的铜层 14。
进一步的, 对位标记的透光性, 使能够通过观察对位标记 13a, 13b与 位于其下方的连接端子具有的标记是否精确对准, 实现 COF基带与液晶玻 璃的精准对位。 保留对位标记 13a, 13b周围的铜层 14, 增强了 COF基带边 缘的强度, 可以防止 COF基带出现边缘剥离、 卷翘等问题。 此外, 较小的 刻蚀区域能够节省工艺材料, 降低工艺成本。
此外, 需要在铜层 14的每一侧分别至少刻蚀一个对位标记才能实现上 述 COF基带与液晶玻璃的精准对位。 当然, 每一侧也可以刻蚀两个或两个 以上的对位标记, 每一个对位标记的形状包括圆形、 十字形、 三角形、 梯形 或凸字形等常见的形状;
刻蚀铜层 14使铜层 14每一侧的全部对位标记的中心轴线在同一直线 上, 或将 COF基带两侧铜层上对位标记刻蚀为对称的作用是:
可以通过刻蚀的对位标记快速地观察位于其下方连接端子上的标记,在 未能对准的情况下, 能够快速的调整直至重合, 提升 COF基带与液晶玻璃 的结合效率。
本发明还公开了一种液晶显示模组, 液晶显示模组包括 COF基带 1和 液晶玻璃 2。 如图 3所示, 为本发明液晶显示模组的结构示意图, 液晶玻璃 2在如图 3所的 C区域设置连接端子, COF基带 1通过连接引脚 11与连接 端子的高密度精确接合实现与液晶玻璃的连接。
如图 4所示, 为本发明液晶显示模组如图 3所示 C区域 COF基带与液 晶玻璃连接前的结构示意图。 其中, 连接端子 21 的两侧至少分别设有位置 与 COF基带 1两侧的对位标记位置相对应的标记 22(连接端子 21如图所示 右侧的标记未示)。
其中, 标记 22形状与 COF基带 1上对位标记 13a, 13b的形状对应相 同。 本实施例中, 两标记 22a, 22b分别为呈圆形的对位标记 22a和呈凸字 状的对位标记 22b, 两标记 22a, 22b所在的区域设为不透光, 且表面积比对 位标记 13a, 13b的表面积略小。
COF基带 1与液晶玻璃 2对位装配时,如图 5所示, 为本发明液晶显示 模组如图 3所示 C区域 COF基带与液晶玻璃连接后的结构示意图。具体的, 当连接引脚 11与连接端子 21接合时, 通过观察对位标记 13a, 13b与位于 其下方连接端子的标记 22a, 22b是否精确对准。 也就是对位标记 13a与标 记 22a,对位标记 13b与标记 22b的中心是否重合, 以及图示连接引脚 11右 侧和连接端子 21右侧的对位标记和标记是否重合。 当所有的对位标记 13和 标记 22重合时, 说明连接引脚 11与连接端子 21对位精准, 否则需要对连 接引脚 11的位置进行调整。
本发明液晶显示模组采用具有上述透光结构的 COF基带, 具体实施方 式与 COF基带的实施方式相同, 此处不再赘述。
实施本发明的 COF基带及其制造方法、 液晶显示模组, 由于连接引脚 两侧对位标记所在的区域设为透光,透过可透光的对位标记实施对准液晶玻 璃连接端子的标记。 实现了 COF基带与液晶玻璃的高密度接合, 提高了对 位精确度和操作性。 对位标记的周围保留有铜层, 可以增强 COF基带边缘 的强度, 防止 COF基带出现边缘剥离、 卷翘等问题。 此外, 通过刻蚀的较 小区域作为对位标记能够节省工艺材料, 降低工艺成本。
以上所揭露的仅为本发明较佳实施例而已, 当然不能以此来限定本发明 之权利范围, 因此等同变化, 仍属本发明所涵盖的范围。

Claims

权 利 要 求
1、 一种 COF基带, 其中, 所述 C0F基带至少包括:
连接引脚, 用以连接液晶玻璃具有的连接端子;
对位标记, 分别设置在所述连接引脚的两侧, 用以与所述连接端子具有 的标记进行重合对位, 所述对位标记所在的区域设为透光;
位于所述连接弓 I脚任一侧的所述对位标记至少设为一个。
2、 如权利要求 1所述的 COF基带, 其中, 所述每一个对位标记的形状 为圆形、 十字形、 三角形、 梯形或凸字形。
3、 如权利要求 1所述的 COF基带, 其中, 所述对位标记的周围铺设用 以加强所述 COF基带强度的铜层。
4、 如权利要求 3所述的 COF基带, 其中, 所述每一个对位标记的形状 为圆形、 十字形、 三角形、 梯形或凸字形。
5、 如权利要求 4所述的 COF基带, 其中, 位于所述连接引脚任一侧的 所述对位标记设为两个,其中一个的形状为呈圆形,另一个的形状呈凸字形。
6、 如权利要求 5所述的 COF基带, 其中, 位于所述连接引脚任一侧的 所述两个对位标记的中心排列在同一直线上。
7、 如权利要求 4所述的 COF基带, 其中, 位于所述连接引脚任一侧的 所述全部对位标记的中心轴线在同一直线上。
8、 如权利要求 1所述的 COF基带, 其中, 所述连接引脚两侧的所述对 位标记排布为对称。
9、 一种 COF基带的制造方法, 其中, 至少包括以下步骤:
对位于 COF基带两侧的金属层分别进行刻蚀, 获取可透光的用以与液 晶玻璃具有的连接端子上的标记进行重合对位的对位标记。
10、 如权利要求 9所述的制造方法, 其中, 所述金属层为铜层, 所述对 位于 COF基带两侧的金属层分别进行刻蚀的步骤包括:
在 COF基带任一侧的铜层上刻蚀至少一个形状为圆形、 十字形、 三角 形、 梯形或凸字形的对位标记的步骤。
11、 如权利要求 10所述的制造方法, 其中, 在 COF基带两侧的铜层上 刻蚀得到的对位标记排布为对称。
12、 如权利要求 9所述的制造方法, 其中, 位于所述连接引脚任一侧的 所述全部对位标记的中心轴线在同一直线上。
13、 一种液晶显示模组, 至少包括液晶玻璃和 COF基带, 所述液晶玻 璃具有连接端子, 所述连接端子的两侧设有标记, 所述 COF基带具有用以 连接所述连接端子的连接引脚, 其中,
在所述连接引脚的两侧设有位置可与所述连接端子的所述标记对应重 合的可透光的对位标记;
透过所述可透光的对位标记对准所述连接端子的所述标记, 并将所述 COF基带的所述连接弓 I脚连接在所述液晶玻璃的所述连接端子上;
位于所述连接弓 I脚任一侧的所述对位标记至少设为一个。
14、 如权利要求 13所述的液晶显示模组, 其中, 所述每一个对位标记 的形状为圆形、 十字形、 三角形、 梯形或凸字形
15、 如权利要求 13所述的液晶显示模组, 其中, 所述对位标记的周围 铺设用以加强所述 COF基带强度的铜层。
16、 如权利要求 15所述的液晶显示模组, 其中, 所述每一个对位标记 的形状为圆形、 十字形、 三角形、 梯形或凸字形。
17、 如权利要求 16所述的液晶显示模组, 其中, 位于所述连接引脚任 一侧的所述对位标记设为两个, 其中一个的形状为呈圆形, 另一个的形状呈 凸字形。
18、 如权利要求 17所述的液晶显示模组, 其中, 位于所述连接引脚任 一侧的所述两个对位标记的中心排列在同一直线上。
19、 如权利要求 16所述的液晶显示模组, 其中, 位于所述连接引脚任 一侧的所述全部对位标记的中心轴线在同一直线上。
20、 如权利要求 13所述的液晶显示模组, 其中, 所述连接引脚两侧的 所述对位标记排布为对称。
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