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    • 95. 发明授权
    • Liquid crystal polymers for flexible circuits
    • 用于柔性电路的液晶聚合物
    • US06923919B2
    • 2005-08-02
    • US09947082
    • 2001-09-04
    • Rui YangGuoping Mao
    • Rui YangGuoping Mao
    • C08J7/12C09K13/02H01L21/60H05K3/00H05K3/38C30B33/00
    • C09K13/02C08J7/12H05K3/002H05K3/381H05K2201/0141H05K2201/0397H05K2203/0786
    • A process for providing a metal-seeded liquid crystal polymer comprising the steps of providing a liquid crystal polymer substrate to be treated by applying an aqueous solution comprising an alkali metal hydroxide and a solubilizer as an etchant composition for the liquid crystal polymer substrate. Further treatment of the etched liquid crystal polymer substrate involves depositing an adherent metal layer on the etched liquid crystal polymer substrate. An adherent metal layer may be deposited using either electroless metal plating or vacuum deposition of metal such as by sputtering.When using electroless metal plating, a tin(II) solution applied to the liquid crystal polymer provides a treated liquid crystal polymer substrate to which the application of a palladium(II) solution provides the metal-seeded liquid crystal polymer. The etchant composition comprises a solution in water of from 35 wt. % to 55 wt. % of an alkali metal salt, and from 10 wt. % to 35 wt. % of a solubilizer dissolved in the solution to provide the etchant composition suitable for etching the liquid crystal polymer at a temperature from 50° C. to 120° C. A flexible circuit comprising a liquid crystal polymer film having through-holes and related shaped voids may be formed using etchant compositions as previously described.
    • 一种提供金属种子液晶聚合物的方法,包括以下步骤:通过施加包含碱金属氢氧化物和增溶剂的水溶液作为液晶聚合物基材的蚀刻剂组合物来提供待处理的液晶聚合物基材。 蚀刻的液晶聚合物基板的进一步处理包括在蚀刻的液晶聚合物基板上沉积粘附金属层。 可以使用化学镀金属或真空沉积金属例如溅射来沉积粘附金属层。 当使用化学镀金属时,施加到液晶聚合物上的锡(II)溶液提供处理过的液晶聚合物基质,其中施加钯(II)溶液提供金属种子液晶聚合物。 蚀刻剂组合物包含在35重量%的水中的溶液。 %至55重量% %的碱金属盐和10wt。 %〜35重量% 溶解在溶液中的%的增溶剂以提供适于在50℃至120℃的温度下蚀刻液晶聚合物的蚀刻剂组合物。包括具有通孔和相关形状空隙的液晶聚合物膜的柔性电路 可以使用如前所述的蚀刻剂组合物形成。
    • 97. 发明申请
    • WATER SOLUBLE PROTECTIVE PASTE FOR MANUFACTURING PRINTED CIRCUIT BOARDS
    • 用于制造印刷电路板的水溶性保护胶
    • US20050001017A1
    • 2005-01-06
    • US10707724
    • 2004-01-07
    • Stefano Oggioni
    • Stefano Oggioni
    • H05K3/28B23K31/00
    • H05K3/282H01L2224/16225H01L2224/32225H01L2224/48227H01L2224/73265H01L2924/01019H01L2924/01079H05K3/1275H05K2203/049H05K2203/0534H05K2203/0786H01L2924/00
    • An improved water soluble protective paste and a method for protecting metal circuits and pads on the surface of an electronic board during the manufacturing steps. A densifier is added to the paste making it easier and more efficient the dispensing of the paste. After deposition the layer is dried until a solid protective film is obtained. An additional advantage obtained by the present invention is that the protective layer can be deposited also by means of an offset printing process, avoiding the use of the stencil and of the screening steps. Screening process is a labourious operation which requires very sophisticated equipment and a very high precision in the design of the stencil. Because of these requirements, screening is an expensive process. On the other hand offset printing is a very simple, cheap and reliable method. In addition, the film forming properties allow the material to create a protective film even with a thin deposited film.
    • 改进的水溶性保护膏和在制造步骤期间保护电子板表面上的金属电路和焊盘的方法。 将增稠剂添加到糊料中,使糊剂分配更容易和更有效。 沉积后,将层干燥直到得到固体保护膜。 通过本发明获得的另外的优点是保护层也可以通过胶版印刷工艺沉积,避免使用模版和筛选步骤。 筛选过程是一项精心的操作,需要非常精密的设备和极高的模具设计精度。 由于这些要求,筛选是一个昂贵的过程。 另一方面,胶印是一种非常简单,便宜可靠的方法。 此外,成膜性能即使用薄的沉积膜也能够使材料形成保护膜。