会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Thick-film capacitor manufactured by printed-circuit techniques
    • 通过印刷电路技术制造的厚膜电容器
    • US4555745A
    • 1985-11-26
    • US425519
    • 1982-09-28
    • Gisela WestermeirFriedhard Fehr
    • Gisela WestermeirFriedhard Fehr
    • H01G4/012H01G4/20H01G4/33H01G4/38H05K1/09H05K1/16H05K3/18H05K3/24H05K3/46B05D5/12
    • H05K1/162H01G4/20H01G4/38H05K1/095H05K2201/0187H05K2201/0209H05K2201/0347H05K2201/09672H05K2203/0709H05K3/182H05K3/246H05K3/4664
    • A thick-film capacitor and a printed circuit are described, this capacitor being designed for implementation by printed-circuit technology, while the printed circuit contains capacitors of this type, together with the associated conducting paths.The capacitor dielectric comprises a screen-printable dispersion of dielectric filler substances in a polymeric material which can be cured at comparatively low temperatures, especially a polymeric resin from the group comprising polyurethane resins, polyester resins, epoxy resins and melamine formaldehyde resins. The use of a dielectric of this type enables lower curing temperatures to be used, in the region of approximately 200.degree. C., in contrast to conventional designs of thick-film capacitors with a dielectric containing a glass or ceramic frit, which require firing temperatures of the order of 1,000.degree. C.The production of the lower and upper electrodes of the capacitors is preferably carried out in combination with the production of the associated conducting paths of the printed circuit. The electrodes of the capacitors and the conducting paths associated therewith, are preferably obtained by a deposition process, from a chemical bath, this process involving no electric current. Deposition is carried out onto an activated base layer producing completely solderable electrodes and conducting paths, of copper or nickel, which adhere strongly to the substrate layers.A description is also given of a printed circuit, of the above type, with capacitors arranged in a matrix, and with associated connecting leads, this printed circuit being designed as a capacitive input keyboard for data-processing systems.
    • 描述了厚膜电容器和印刷电路,该电容器被设计用于通过印刷电路技术实现,而印刷电路包含这种类型的电容器以及相关联的导电路径。 电容器电介质包括介电填料物质在聚合物材料中的可丝网印刷分散体,其可以在相当低的温度下固化,特别是聚氨酯树脂,聚酯树脂,环氧树脂和三聚氰胺甲醛树脂的聚合物树脂。 与使用含有玻璃或陶瓷玻璃料的电介质的厚膜电容器的常规设计相反,使用这种类型的电介质可以在大约200℃的区域中使用较低的固化温度,这需要烧制温度 约为1000℃。电容器的下电极和上电极的生产优选与印刷电路的相关传导路径的产生相结合。 电容器的电极和与其相关联的导电路径优选通过从化学浴池进行的沉积过程获得,该过程不涉及电流。 在激活的基底层上进行沉积,产生完全可焊接的电极和铜或镍的传导路径,其牢固地粘附到基底层。 还给出了上述类型的印刷电路,其中电容器以矩阵形式布置,并且具有相关联的连接引线,该印刷电路被设计为用于数据处理系统的电容式输入键盘。