Process of manufacturing thin ball grid array substrates
    2.
    发明授权
    Process of manufacturing thin ball grid array substrates 失效
    制造薄球栅阵列基板的工艺

    公开(公告)号:US06274491B1

    公开(公告)日:2001-08-14

    申请号:US09636315

    申请日:2000-08-11

    IPC分类号: H01L2144

    摘要: A process of manufacturing thin ball array substrates includes the steps of: using a layer of polyimide film as a carrier, electroplating a thin copper layer on the polyimide film, electroplating a thick copper layer on the thin copper layer, applying photosensitive coating layers on both sides of the carrier, mounting two masks with optically transmissible circuit tracks on two sides of the carrier and then processing the carrier with exposure treatment, processing the carrier with development treatment so as to remove the photosensitive coating layers aligned with the circuit track thereby forming recessed circuit tracks on the photosensitive coating layers, electroplating a copper layer on a top of the carrier thereby forming an additional copper layer on the thick copper layer, etching a bottom of the carrier to remove the upper recessed circuit track thereon, coating the copper layer on the upper recessed circuit track with soldering metallic material so as to make a top of the soldering metallic material, washing away the photosensitive coating layers with chemical agent, and removing surplus copper layer to remain in circuit lines and the soldering metallic material, whereby a thin ball grid array substrate with thicker circuit lines without remaining electroplating lines can be obtained.

    摘要翻译: 制造薄球阵列基板的方法包括以下步骤:使用聚酰亚胺膜作为载体,在聚酰亚胺膜上电镀薄铜层,在薄铜层上电镀厚铜层,在两层上施加感光涂层 在载体的两侧安装具有光学传输电路轨道的两个掩模,然后用曝光处理处理载体,通过显影处理处理载体,以除去与电路轨迹对准的感光涂层,从而形成凹陷 在光敏涂层上的电路轨迹,在载体的顶部上电镀铜层,从而在厚铜层上形成附加的铜层,蚀刻载体的底部以除去其上的凹陷电路轨道,将铜层涂覆在 具有焊接金属材料的上凹形电路轨道,以便形成顶部 用化学试剂洗涤光敏涂层,除去多余的铜层,保留在电路线和焊接金属材料中,从而可以获得具有较厚电路线而不残留电镀线的薄球栅阵列基板。

    Expression vector for expressing recombinant protein in Cyanobacterium
    4.
    发明申请
    Expression vector for expressing recombinant protein in Cyanobacterium 审中-公开
    用于在蓝藻中表达重组蛋白的表达载体

    公开(公告)号:US20110124088A1

    公开(公告)日:2011-05-26

    申请号:US12655599

    申请日:2009-12-31

    IPC分类号: C12N1/21 C12N15/63

    CPC分类号: C12N15/74

    摘要: The present invention provides a universal vector for expressing a protein in a Cyanobacterium that includes an erythromycin promoter and a homologous recombination DNA fragment, and further provides a transformed E. coli and a genetically modified Cyanobacterium. In addition, the present invention also provides a method for expressing a protein in a Cyanobacterium that includes steps of inserting a gene of a specific protein into the universal vector and transforming the vector into a Cyanobacterium, so as to express the specific protein.

    摘要翻译: 本发明提供了一种在蓝芽杆菌中表达蛋白质的通用载体,其包括红霉素启动子和同源重组DNA片段,并进一步提供转化的大肠杆菌和遗传修饰的蓝细菌。 此外,本发明还提供了在蓝细菌中表达蛋白质的方法,其包括将特异性蛋白质的基因插入通用载体并将载体转化为蓝细菌以便表达特异性蛋白质的步骤。