WO2014082401A1 - 双界面智能卡及其制造方法 - Google Patents

双界面智能卡及其制造方法 Download PDF

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Publication number
WO2014082401A1
WO2014082401A1 PCT/CN2013/072869 CN2013072869W WO2014082401A1 WO 2014082401 A1 WO2014082401 A1 WO 2014082401A1 CN 2013072869 W CN2013072869 W CN 2013072869W WO 2014082401 A1 WO2014082401 A1 WO 2014082401A1
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WIPO (PCT)
Prior art keywords
antenna
groove
chip
layer
smart card
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Application number
PCT/CN2013/072869
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English (en)
French (fr)
Inventor
薛渊
Original Assignee
Xue Yuan
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Publication of WO2014082401A1 publication Critical patent/WO2014082401A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/14Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation
    • G06K19/145Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation at least one of the further markings being adapted for galvanic or wireless sensing, e.g. an RFID tag with both a wireless and an optical interface or memory, or a contact type smart card with ISO 7816 contacts and an optical interface or memory
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs

Definitions

  • the invention relates to a method for manufacturing a dual interface smart card, and a dual interface smart card prepared according to the method. Background technique
  • the dual-interface smart card with multiple reading and writing forms is composed of PVC protective layer, chip and antenna. It is based on professional chip, integrating contact and non-contact interface, and can also provide smart card surface magnetic strip and so on.
  • the dual interface smart card has two operation interfaces, which can read and write information by means of contact contacts, or access the chip through antenna sensing mode at a certain distance, and perform the same information read and write operations, two interfaces.
  • the contact type read/write interface conforms to the technical standards of contact IC cards such as ISO/IEC7816;
  • the inductive read/write interface conforms to the technical standards of non-contact IC cards such as ISO/IEC 14443. These two interfaces Share the same microprocessor, operating system, and memory.
  • the dual interface smart card also has an antenna coil connected to the chip.
  • the electromagnetic field generated by the reader provides energy to realize energy transfer and data transmission through radio frequency.
  • the main production process of the dual interface smart card is two types, one of which includes the following steps: preparing the antenna and the substrate for pre-lamination to obtain the Inlay layer; the front layer and the back layer printing material including the front printing material and the protective film; The back layer of the protective film is accurately aligned with the Inlay layer, and then laminated and cut, to obtain a card base of a dual interface smart card having multiple read and write modes; and a milling slot is performed at the chip module of the card base.
  • the antenna is manually threaded, pulled and trimmed, and then the card base is double-milled; at the same time, the two contacts of the chip module are placed on another device. Dot tin and flatten the processing, and finally place the processed card base and chip on the packaging machine for soldering and packaging.
  • the other type includes the following steps: preparing the antenna and the substrate to be pre-laminated to obtain an Inlay layer; and including the front surface of the front printing material and the protective film, the back layer printing material and the back layer of the protective film and the Inlay layer.
  • the card base of the smart card is obtained; a milling slot is performed at the location of the chip module of the card base, and the card base obtained after the slotting is over-slotted at the contact point of the chip module,
  • the section of the antenna is milled to a depth of 10%-15%, so that the bare copper core of the antenna is exposed in the secondary milling slot; the conductive adhesive is injected into the bare copper core position in the secondary milling slot, and the chip is placed on the corresponding antenna.
  • the bare copper core is cured at the position; finally, the processed card base and chip are gradually placed on the packaging machine for sealing. Installed.
  • the technical problem to be solved by the present invention is to provide a method for manufacturing a dual interface smart card.
  • the method for manufacturing a double interface smart card has high output, good product quality, high yield, high stability, and can realize fully automatic continuous high speed production.
  • an aspect of the present invention is a dual interface smart card manufacturing method, the dual interface smart card including a chip for contact type reading and writing and a contactless read/write antenna.
  • the manufacturing method includes the steps of: a) fabricating an antenna layer having a front side and a back side, embedding the antenna on a back surface of the antenna layer, the antenna being in a lone area corresponding to a chip position Forming a serpentine embedded region, the two extensions of the antenna extending to the serpentine embedded region; b) being disposed at a lone block region on the back side of the antenna layer for preventing the lone block region and the back protective layer a fused insulating layer; c) sequentially laminating a front protective layer, a front protective film, the antenna layer, the back protective layer, and a back protective film from top to bottom to form a card base; d) from the front side of the card base Cutting a first groove downwardly, the outer peripheral shape of the first groove corresponding to the
  • the isolating layer is a separator or a coated separator.
  • the first groove is annular.
  • the shape of the first groove is completely consistent with the shape of the chip.
  • the ear-shaped groove is milled at a position corresponding to the contact point area of the chip module.
  • Another aspect of the present invention is to provide a dual interface smart card made by the above dual interface smart card manufacturing method.
  • the invention adopts a unique "loose block” process, can realize fully automatic continuous production, and does not need to manually pick up the wire, arrange and perform the operation on the wire end of the antenna, thereby greatly improving the production efficiency.
  • the jig when lifting a lone block, the jig mainly holds the lone block, does not directly contact the wire end of the antenna, and does not easily break or damage the antenna, effectively ensuring product quality, improving product yield, and extending the dual interface smart card. The service life of the dual interface smart card is guaranteed.
  • the double-interface smart card manufactured by the manufacturing method of the present invention has a bending distortion test exceeding the standard by 3 times, and the high temperature, high humidity and impact resistance tests are more than 1-2 times of the standard. All other items are in line with international and national standards.
  • FIG. 1 is a schematic diagram of defining a lone block region and a slitting step in a dual interface smart card manufacturing method according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing a buried antenna and a serpentine embedded region in the embodiment shown in FIG. 1;
  • FIG 3 is a schematic view showing the arrangement of the separator in the embodiment shown in Figure 1;
  • Figure 4 is a schematic cross-sectional view of the laminated card base
  • Figure 5 is a schematic view of the first milling slot
  • Figure 6 is a schematic view of the second milling slot
  • Figure 7 is a schematic view of the third milling slot
  • Figure 8 is a schematic view of lifting a lone block and pulling a serpentine embedded wire end
  • Figure 9 is a schematic diagram of a connection chip. detailed description
  • the card base of the dual interface smart card is generally composed of a five-layer laminate, which is a front protective film 2, a front protective layer 3, an antenna layer 1, a back protective layer 4, and a back protective film 5 from the front to the back.
  • the antenna layer 1 is first fabricated, and the antenna layer 1 has a front side la and a back side lb. As shown in Figs. 1 and 2, the antenna 13 is buried in the antenna layer 1. The antenna 13 is embedded on the back surface lb of the antenna layer 1, i.e., the side surface facing the back surface protective layer 4. The antenna 13 start line end 13a and the end line end 13b are coupled to a position corresponding to the chip 8 (described later in detail), i.e., the lone block area 11.
  • a slit 12 is formed on one side of the lone block region 11, and an antenna near the start line end 13a and the end line end 13b forms a serpentine embedded region in the lone block region 11, and two extending from the serpentine embedding region The strip extensions 13c and 13d intersect the slit 12.
  • the purpose of such serpentine embedding is to have sufficient traction length at the end of the line when lifting the lone block (as shown in Figure 8).
  • a spacer film 14 is disposed on the back surface 11 of the back surface lb of the antenna layer 1, and a layer of isolation material may be applied.
  • the separator or the isolating material serves to prevent the antenna layer 1 and the back protective layer 4 from being fused in this region.
  • the antenna layer 1 is laminated with the surface-printed front protective layer 2, the front protective film 3, and the surface-printed back protective layer 4 and the back protective film 5 with a magnetic strip.
  • the back side of the buried antenna lb is adjacent to the back protective layer 4 (see Fig. 4), and the laminated card base after lamination is stamped to form a separate dual interface smart card base.
  • the independent card base performs program milling at the chip position.
  • This program milling slot is performed from the front side of the card base to the back side, and is divided into three slots. .
  • the first slot is from the front of the card base, and the first groove 21 is milled down (see Figure 5).
  • the outer peripheral shape of the first recess 21 corresponds to the outer dimension of the chip 8, and the depth thereof is the thickness of the chip edge PCB, and does not touch the antenna 13.
  • the space surrounded by the first recess 21 will later accommodate the PCB board of the chip.
  • the first groove 21 is annular, that is, only the material around the lone block region 11 is milled, and the groove width of the annular first groove 21 is the width of the milling cutter.
  • the second milling groove is from the inner side of the first groove 21, and the second groove 22 is milled downward.
  • the second groove 22 is annular, and the groove width is the width of the milling cutter, and the second groove is surrounded by The area is the orphan block area 11.
  • two ear-shaped recesses 23 are milled at the position of the corresponding soldering point of the chip module (not shown) for accommodating the solder joints of the chip module (see Fig. 6).
  • the depth of the second recess 22 is greater than that of the first recess 21, and just touches the antenna 13 and just exposes the antenna copper core.
  • the third milling groove is a downwardly milled third groove 24 on the track of the second groove 22, avoiding the position of the extensions 13c, 13d of the antenna 13 (see Fig. 7).
  • the milling depth of the third recess 24 is to mill the entire antenna layer 1.
  • the third recess 24 thus formed corresponds substantially to the shape of the second recess 22 except that there are two overlaps 25 at the extensions 13c, 13d of the antenna to protect the antenna 13 from being cut. Since the separator 14 has been placed at the position of the chip 8 before the laminating process, the lump region 11 has been bonded to the back protective layer 4 once the lump region 11 has been milled from the front protective layer 3 and the antenna layer 1 by the milling cutter. Get rid of.
  • the lone block region 11 and the card base are connected to the antenna layer only through the two extension portions 13c and 13d of the antenna 13 and the two overlapping portions 25 around the extension portion. Since the antenna layer 1 at the position of the lap portion 25 has formed the slit 12 before the antenna is buried, only the start line end and the end line end of the antenna 13 are actually connected to the card base 11 and the card base. 13c, 13d. That is, after three times of milling, a lone block 110 that is connected only by the antenna 13 and that can be detached from the card base is finally formed.
  • the lone block 110 is lifted from the card base using an automated jig, since the two ends of the antenna 13 are embedded in the lone block 110 in a serpentine shape, as the lone block 110 is lifted, the antenna The two connections of 13 are also continuously drawn from the lone block 110. Since the milling groove depth of the third groove 24 is to mill the antenna layer 1, the lone block 110 is lifted to have the same cavity depth as the third groove 24, thereby constituting the receiving groove 240 for accommodating the chip module.
  • the chip 8 When the wire end of the antenna 13 is pulled out to a certain length, the chip 8 is attached to the antenna 13 (see Fig. 9), so that the chip module (not shown, located on the back side of the chip 8) is in contact with the antenna 13.
  • the two bonding points of the chip module are respectively connected to the two wire ends of the antenna by using a hot-melt bonding process to realize electrical connection between the antenna 13 and the chip module.
  • the remaining line segments are cut off together with the orphan block 110.
  • the chip module is then received in the receiving slot 240 of the card base, and the PCB board around the chip module is positioned in the first recess 21, and the chip 8 is fixed in the ear recess 23 by a backing or dispensing process.
  • the package of the chip and the card base is completed by the hot press packaging and the cold press setting process, thereby completing the manufacture of the dual interface smart card.
  • the main idea of the present invention is to allow the two end portions of the antenna 13 to be serpentinely wound in the lone block region 1 1 and to form the lump 11 which is finally detachable from the card base by three times of milling the card base from the front side. Since the lone block 11 has a large area, it is easy to be clamped by an automated jig and lifted. The serpentine end of the antenna 13 embedded in the lone block 1 1 of the antenna layer 1 is gradually peeled off as the lone block 11 is lifted, so that the chip 8 and the antenna 13 can be easily attached and electrically connected.
  • the dual interface smart card can realize automatic and continuous production, which greatly improves the production efficiency and is effective.
  • the product guarantees the product quality, improves the product yield rate, prolongs the service life of the dual interface smart card, and ensures the stability of the dual interface smart card.
  • the slit 12 in the above embodiment may be omitted.
  • the orphan block 11 is still connected to the card base through the lap portion 25.
  • the lap portion 25 is very thin, it is only slightly wider than the antenna 13, It is easy to be pulled off.
  • the clamp grips the orphan block 11 to be pulled upward the lap portion 25 is pulled off, so that the lone block 11 is disengaged from the card base, and the serpentine wound wire end is stretched and elongated, and the same effect can be achieved.

Abstract

本发明为一种双界面智能卡制造方法。该制造方法主要包括在天线层的背面埋置天线,同时在对应于芯片位置的孤块区域中形成蛇形埋置区域。所述天线的两条延伸段延伸至蛇形埋置区域。在天线层背面设置有隔离层。将天线层与其它层一起层压形成卡基。通过从卡基正面经过三次铣槽,形成仅通过天线连接、可脱离所述卡基的孤块。提升孤块使之与所述卡基脱离,同时使得孤块中蛇形埋置的天线被牵引出来。当天线被牵引出一定长度后,将芯片贴合到天线上,与天线电连接,连接后将剩余线段连同所述孤块一起剪除。然后将芯片容纳于卡基的容纳槽中,从而将芯片固定于所述卡基中。

Description

双界面智能卡及其制造方法 技术领域
本发明涉及一种双界面智能卡的制造方法, 以及根据该方法制得的双界面智能卡。 背景技术
具有多种读写形式的双界面智能卡是由 PVC保护层、 芯片和天线组成, 是基于专业 芯片、集接触式与非接触式两种接口方式为一体,还可提供智能卡表面磁条等多种形式进 行信息读写的智能卡。双界面智能卡有两个操作界面,既可以通过接触触点的方式进行信 息读写,也可以在相隔一定距离的情况下通过天线感应方式来访问芯片,执行相同的信息 读写操作,两个界面分别遵循两个不同的标准,接触式读写界面符合 ISO/IEC7816等接触 式 IC卡的技术标准;感应式读写界面符合 ISO/IEC 14443等非接触式 IC卡的技术标准. 这 两个界面共享同一个微处理器、 操作系统以及存储器。
双界面智能卡内除了一个微处理器芯片外还有一个与芯片相连的天线线圈,在使用感 应界面时, 由读写器产生的电磁场提供能量, 通过射频方式实现能量传递和数据传输。
目前双界面智能卡的主要生产过程为两类,一类包括如下步骤:制作好天线与基材进 行预层压后得到 Inlay层; 将包括正面印刷料和保护膜的正面层、 背面层印刷料和保护膜 的背面层与所述 Inlay层精准对应后进行层压和切卡, 得到同时具有多种读写模式的双界 面智能卡的卡基;在所述卡基的芯片模块所在处进行一次铣槽,在一次铣槽后得到的卡基 上通过手工对天线进行挑线、拉线和剪线头等处理, 之后对卡基进行二次铣槽; 同时在另 外设备上将芯片模块的两个触点上进行点锡并铣平处理,最后在封装机上逐步摆放处理后 的卡基及芯片进行焊接并封装。
另一类包括如下步骤: 制作好天线与基材进行预层压后得到 Inlay层; 将包括正面印 刷料和保护膜的正面层、背面层印刷料和保护膜的背面层与所述 Inlay层精准对应后进行 层压和切卡, 得到智能卡的卡基; 在所述卡基的芯片模块所在处进行一次铣槽, 铣槽后得 到的卡基上在芯片模块接触点处二次铣槽, 将天线的截面铣去 10%-15%的深度, 使得二 次铣槽中将天线的裸铜芯露出;在二次铣槽中的裸铜芯位置注入导电胶,并将芯片放置在 对应的天线裸铜芯位置进行固化; 最后在封装机上逐步摆放处理后的卡基及芯片进行封 装。
在实现上述双界面智能卡的生产过程中,现有技术中至少存在如下问题:有多个步骤 需要通过手工完成如点锡等, 每天的产量很低, 而且这些操作方法控制难度大, 即使是熟 练的工人也难保证产品质量,废品率高,通过此方法在锡和铜线的处理上可能损坏天线线 头和芯片模块, 使成卡的稳定性降低。如采用导电胶方式生产, 由于胶在固化过程中与外 界空气接触, 并且固化时间比较长, 因此导电胶的导电性受时间和环境影响比较大, 会造 成导电性不稳定。同时由于双界面智能卡在使用过程中难免会反复弯曲,并且使用时的环 境温度变化很大, 使得导电胶与芯片以及天线之间产生分离, 造成接触不良的现象。 发明内容
本发明要解决的技术问题是提供一种双界面智能卡的制造方法,通过该方法制造双界 面智能卡产量高、 产品质量好、 成品率高、 稳定性高, 能够实现全自动连续化高速生产。
为了解决上述技术问题,本发明的一个方面是一种双界面智能卡制造方法,所述双界 面智能卡包括用于接触式读写的芯片以及非接触式读写的天线。所述制造方法包括以下步 骤: a) 制造天线层, 所述天线层具有正面和背面, 将所述天线埋置在所述天线层的背面 上,所述天线在对应于芯片位置的孤块区域中形成蛇形埋置区域,所述天线的两条延伸段 延伸至蛇形埋置区域; b) 在所述天线层背面的孤块区域处设置用于防止所述孤块区域与 背面保护层熔合的隔离层; c) 由上至下地将正面保护层、 正面保护膜、 所述天线层、 所 述背面保护层以及背面保护膜依次层压形成卡基; d) 从所述卡基的正面向下铣出第一凹 槽, 所述第一凹槽的外周边形状尺寸与所述芯片的外形尺寸相对应, 其深度为芯片边缘 PCB的厚度, 不触及天线, 所述第一凹槽所包围的空间用于容纳所述芯片的 PCB板; e) 从所述第一凹槽的内侧, 向下铣出第二凹槽,所述第二凹槽所围成的区域对应所述孤块区 域, 所述第二凹槽的深度大于第一凹槽, 并以刚触及天线并露出天线铜芯为准; f) 在所 述第二凹槽的轨迹上、避开所述天线的延伸段的位置向下铣出第三凹槽,所述第三凹槽的 深度是将整个天线层铣穿,所述第三凹槽除了在所述天线的延伸段处留有搭接部,其形状 基本与所述第二凹槽的形状对应,从而形成仅通过所述天线连接、可脱离所述卡基的孤块; g) 提升所述孤块使之与所述卡基脱离, 同时使得蛇形埋置区域中的天线被牵引出来, 所 述孤块被提升后留下的空洞与所述第三凹槽一起形成容纳槽; h) 当所述天线被牵引出一 定长度后, 将所述芯片贴合到天线上, 使得芯片的芯片模块与所述天线电连接, 连接后将 剩余线段连同所述孤块一起剪除; 以及 i) 将所述芯片模块容纳于所述卡基的容纳槽中, 所述芯片模块周围的所述 PCB板容纳于所述第一凹槽中,从而将芯片固定于所述卡基中。 较佳地, 上述步骤 a) 中, 在将所述天线埋置于所述天线层之前, 所述天线层的背面 上形成开缝, 所述天线的两条延伸段与所述开缝相交。
较佳地, 上述步骤 b) 中, 所述隔离层为隔离膜或涂覆的隔离材料。
较佳地, 上述步骤 d) 中, 所述第一凹槽为环形。
较佳地, 上述步骤 d) 中, 所述第一凹槽的形状与所述芯片的形状完全一致。
较佳地, 上述步骤 e) 中, 在对应所述芯片模块的悍接点区域位置铣出耳形凹槽。 本发明的另一方面是提供一种上述双界面智能卡制造方法制成的双界面智能卡。 本发明采用独特的 "孤块"工艺, 能实现全自动连续化生产, 无需再对天线的线端进 行手工挑线、 整理以及上锡等操作, 大幅度提升了生产效率。
再者, 提升孤块时, 夹具主要夹持住孤块, 不直接接触天线的线端, 不容易拉断或损 坏天线, 有效地保证了产品质量, 提高了产品成品率, 延长了双界面智能卡的使用期限, 同时保障了双界面智能卡的使用稳定性。
通过本发明的制造方法制作的双界面智能卡按国际和国内的检测标准,弯扭曲测试超 出此标准 3倍,高温高湿耐冲击实验均超出标准 1-2倍。其他各项均符合国际和国内标准。 附图说明
图 1 是根据本发明一个实施例的双界面智能卡制造方法中界定孤块区域以及开缝步 骤的示意图;
图 2是图 1所示实施例中埋置天线及形成蛇形埋置区域的的示意图;
图 3是图 1所示实施例中设置隔离膜的示意图;
图 4是层压后卡基的剖面示意图;
图 5是第一次铣槽的示意图;
图 6是第二次铣槽的示意图;
图 7是第三次铣槽的示意图;
图 8是提升孤块并牵拉蛇形埋置的线端的示意图;
图 9是连接芯片的示意图。 具体实施方式
以下通过本发明的较佳实施例来阐述本发明的原理和构思。 如图 4所示,双界面智能卡的卡基通常由五层层压构成,从正面到背面依次为正面防 护膜 2、 正面保护层 3、 天线层 1、 背面防护层 4以及背面防护膜 5。
根据本发明的双界面智能卡的制造方法的一个实施例, 首先制造天线层 1, 天线层 1 具有正面 la和背面 lb。 如图 1和图 2所示, 天线层 1中需埋置天线 13。 天线 13埋置在 天线层 1的背面 lb上, 即面向背面防护层 4的那一侧表面上。天线 13开始线端 13a和结 束线端 13b联接位置处为对应设置芯片 8 (下文将详述)的区域, 即孤块区域 11。在该孤 块区域 11的一侧形成开缝 12,在开始线端 13a和结束线端 13b附近的天线在孤块区域 11 内形成蛇形埋置区域, 从蛇形埋置区域延伸出来的两条延伸段 13c和 13d与开缝 12形成 相交。这样的蛇形埋置目的是为了之后提升孤块时线端有足够的牵引长度(如图 8所示)。
如图 3、 图 4所示, 在埋置好天线 13之后, 在天线层 1背面 lb的孤块区域 11位置 上设置一片隔离膜 14, 也可以涂覆一层隔离材料。 该隔离膜或隔离材料用于防止该区域 的天线层 1与背面保护层 4熔合。 在放置好隔离膜 14后将天线层 1与经过表面印刷的正 面保护层 2、 正面防护膜 3以及经过表面印刷的背面保护层 4和带有磁条的背面防护膜 5 进行层压。 层压时天线层 1埋置天线的背面 lb与背面保护层 4相邻 (见图 4) , 层压完 毕后的拼板卡基经冲压形成独立的双界面智能卡卡基。
接下来, 参看图 5—图 7, 为了将芯片 8设置于独立卡基上, 独立卡基在芯片位置进 行程序铣槽, 这个程序铣槽是从卡基的正面朝背面进行, 分三次铣槽。
第一次铣槽是从卡基的正面, 向下铣出第一凹槽 21 (见图 5) 。 该第一凹槽 21的外 周边形状尺寸与芯片 8的外形尺寸相对应, 其深度为芯片边缘 PCB的厚度, 不触及天线 13。 该第一凹槽 21所包围的空间以后将容纳芯片的 PCB板。
在本实施例中, 该第一凹槽 21为环形, 即只铣去孤块区域 11周围的材料, 该环形的 第一凹槽 21的槽宽即为铣刀宽度。第二次铣槽是从第一凹槽 21的内侧, 向下铣出第二凹 槽 22,该第二凹槽 22为环形,槽宽是铣刀宽度,该第二凹槽所围成的区域即孤块区域 11。 并且, 在对应芯片模块 (图中未示) 焊接点的区域位置铣出两个耳形凹槽 23用以容纳芯 片模块的焊接点 (见图 6) 。 该第二凹槽 22的深度大于第一凹槽 21 , 并以刚触及天线 13 并以刚露出天线铜芯为准。
第三次铣槽是在第二凹槽 22的轨迹上、 避开天线 13的延伸段 13c、 13d的位置 (见 图 7) 向下铣出第三凹槽 24。 第三凹槽 24的铣槽深度是将整个天线层 1铣穿。 这样形成 的第三凹槽 24基本与第二凹槽 22的形状对应, 除了在天线的延伸段 13c、 13d处还有两 个搭接部 25, 以保护此处的天线 13不被铣断。 由于层压工序前在芯片 8位置已放置了隔离膜 14,所以当孤块区域 11一旦被铣刀从 正面保护层 3与天线层 1中铣开后, 孤块区域 11已经与背面保护层 4脱离。 此时的孤块 区域 11与卡基之间只是通过天线 13的两个延伸段 13c、 13d以及延伸段周边两个搭接部 25与天线层相连。而搭接部 25位置处的天线层 1由于在埋置天线前己形成有开缝 12,所 以孤块区域 11 与卡基真正相连的只剩下天线 13 的开始线端和结束线端的延伸段 13c、 13d。 即在三次铣槽之后, 最终形成仅通过天线 13连接、 可脱离卡基的孤块 110。
接着, 参看图 8 , 使用自动化的夹具将孤块 110从卡基上提升起来, 这时由于天线 13 的两线端是以蛇形嵌入在孤块 110中, 随着孤块 110的提升, 天线 13的两连线也在连续 不断地从孤块 110中被牵引出来。 因为第三凹槽 24的铣槽深度是将天线层 1铣穿, 孤块 110被提升后留下的空洞深度与第三凹槽 24相同, 从而一起构成用于容纳芯片模块的容 纳槽 240。
当天线 13的线端牵引出一定长度后将芯片 8贴合到天线 13上(见图 9) , 使得芯片 模块 (图中未示, 位于芯片 8的背面) 与天线 13相接触。 使用热熔键合工艺将芯片模块 的两个悍接点分别与天线的两根线端进行连接, 实现天线 13与芯片模块的电连接。
天线 13与芯片模块连接后, 将剩余线段连同孤块 110—起剪除。 然后将芯片模块容 纳于卡基的容纳槽 240中, 芯片模块周围的 PCB板定位于第一凹槽 21中, 利用背胶或滴 胶工艺将芯片 8固定于耳形凹槽 23中。
最后, 通过热压封装、冷压定型工序后完成芯片与卡基的封装, 从而完成双界面智能 卡的制造。
本发明的主要构思在于让天线 13的两个线端部位蛇形绕置处于孤块区域 1 1内,通过 对卡基从正面进行三次铣槽后,形成最终可脱离卡基的孤块 11。由于孤块 11的面积较大, 容易使用自动化的夹具进行夹持而被提升。 嵌入在天线层 1 的孤块 1 1 区域中的天线 13 的蛇形线端随着孤块 11 的提升而逐渐被剥离出来, 从而可以方便地让芯片 8与天线 13 贴合并电连接。
采用这种独特的 "孤块"工艺, 无需再对天线的线端进行手工挑线、 整理以及上锡等 操作, 使双界面智能卡可以实现全自动连续化生产, 大幅度提升了生产效率, 有效地保证 了产品质量, 提高了产品成品率, 延长了双界面智能卡的使用期限, 同时保障了双界面智 能卡的使用稳定性。
在本发明的另一实施例中, 可以省略上述实施例中的开缝 12。 这样, 三次铣槽后, 孤块 11仍然通过搭接部 25与卡基相连。但是,因为搭接部 25非常细,仅比天线 13略宽, 很容易被拉断。 当夹具夹持住孤块 11向上提拉时, 搭接部 25被拉断, 使得孤块 11脱离 卡基, 同时将蛇形绕置的线端伸展拉长, 能够达到同样的效果。

Claims

1、 一种双界面智能卡制造方法, 所述双界面智能卡包括用于接触式读写的芯片以及 非接触式读写的天线, 所述制造方法的特征在于- a) 制造天线层 (1) , 所述天线层 (1) 具有正面 (la) 和背面 (lb) , 将所述天线
(13)埋置在所述天线层 (1) 的背面(lb)上, 所述天线在对应于芯片 (8)位置的孤块 区域(11) 中形成蛇形埋置区域, 所述天线 (13) 的两条延伸段(13c; 13d)延伸至蛇形 埋置区域;
b)在所述天 层( 1 )背面( lb)的孤块区域(11)处设置用于防止所述孤块区域(11) 与背面保护层 (4) 熔合的隔离层;
c) 由上至下地将正面保护层 (3) 、 正面保护膜 (2) 、 所述天线层 (1) 、 所述背面 保护层 (4) 以及背面保护膜 (5) 依次层压形成卡基;
d) 从所述卡基的正面向下铣出第一凹槽 (21) , 所述第一凹槽 (21) 的外周边形状 尺寸与所述芯片(8)的外形尺寸相对应,其深度为芯片边缘 PCB的厚度,不触及天线(13), 所述第一凹槽 (21) 所包围的空间用于容纳所述芯片的 PCB板;
e) 从所述第一凹槽 (21) 的内侧, 向下铣出第二凹槽 (22) , 所述第二凹槽 (22) 所围成的区域对应所述孤块区域(11), 所述第二凹槽(22)的深度大于第一凹槽(21), 并以刚触及天线 (13) 并露出天线铜芯为准;
f) 在所述第二凹槽 (22) 的轨迹上、 避开所述天线 (13) 的延伸段 (13c、 13d) 的 位置向下铣出第三凹槽 (24) , 所述第三凹槽的深度是将整个天线层 (1) 铣穿, 所述第 三凹槽(24) 除了在所述天线的延伸段(13c、 13d) 处留有搭接部 (25) , 其形状基本与 所述第二凹槽(22) 的形状对应, 从而形成仅通过所述天线(13)连接、 可脱离所述卡基 的孤块 (110) ;
g)提升所述孤块(110)使之与所述卡基脱离, 同时使得蛇形埋置区域中的天线(13) 被牵引出来, 所述孤块 (110) 被提升后留下的空洞与所述第三凹槽 (22) —起形成容纳 槽 (240) ;
h) 当所述天线 (13) 被牵引出一定长度后, 将所述芯片 (8) 贴合到天线 (13) 上, 使得芯片(8)的芯片模块与所述天线(13)电连接,连接后将剩余线段连同所述孤块(110) 一起剪除; 以及
i) 将所述芯片模块容纳于所述卡基的容纳槽 (240) 中, 所述芯片模块周围的所述 PCB板容纳于所述第一凹槽 (21 ) 中, 从而将芯片固定于所述卡基中。
2、 如权利要求 1所述的双界面智能卡制造方法, 其特征在于: 步骤 a) 中, 在将所 述天线( 13 )埋置于所述天线层( 1 )之前,所述天线层( 1 )的背面( lb)上形成开缝( 12), 所述天线 (13 ) 的两条延伸段 (13c, 13d) 与所述开缝 (12) 相交。
3、 如权利要求 1所述的双界面智能卡制造方法, 其特征在于: 步骤 b) 中, 所述隔 离层为隔离膜或涂覆的隔离材料。
4、如权利要求 1一 3中任意一项所述的双界面智能卡制造方法,其特征在于:步骤 d) 中, 所述第一凹槽 (21 ) 为环形。
5、如权利要求 1一 3中任意一项所述的双界面智能卡制造方法,其特征在于:步骤 d) 中, 所述第一凹槽 (21 ) 的形状与所述芯片 (8 ) 的形状完全一致。
6、如权利要求 1一 3中任意一项所述的双界面智能卡制造方法, 其特征在于: 所述步 骤 e) 中, 在对应所述芯片模块的焊接点区域位置铣出耳形凹槽 (23 ) 。
7、 一种如权利要求 1-6 中任意一项所述的双界面智能卡制造方法制成的双界面智能 卡。
PCT/CN2013/072869 2012-11-30 2013-03-19 双界面智能卡及其制造方法 WO2014082401A1 (zh)

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