Process for making a two-layer film carrier
    119.
    发明公开
    Process for making a two-layer film carrier 失效
    Prozess zur Herstellung einesZweischichtenfilmträgers。

    公开(公告)号:EP0415659A2

    公开(公告)日:1991-03-06

    申请号:EP90309293.0

    申请日:1990-08-24

    Abstract: A two-layer film carrier for TAB is made from a substrate (1) prepared by forming a copper layer (2) on a polyimide film by additive plating. A photoresist layer (3) is formed on the copper layer, and another photoresist layer (3) on the polyimide film. Both of the photoresist layers are simultaneously exposed to light through a mask applied to each of them to define a desired pattern. The exposed portions of the photoresist layer on the copper layer are subjected to development and postbaking, whereby selected portions of the copper layer are exposed. The exposed portions of the copper layer are additive plated with copper, whereby leads (4) are formed. The exposed portions of the photoresist layer on the polyimide film are subjected to development and postbaking, whereby selected portions of the polyimide film are exposed (5, 6, 7). The remaining portions of the photoresist layer are removed from the copper layer and the underlying copper layer is etched. The exposed portions of the polyimide film are etched, and the remaining portions of the photoresist layer are removed from the polyimide film.

    Abstract translation: 用于TAB的双层膜载体由通过添加电镀在聚酰亚胺膜上形成铜层(2)制备的基板(1)制成。 在铜层上形成光致抗蚀剂层(3),在聚酰亚胺膜上形成另一光致抗蚀剂层(3)。 通过施加到它们中的每一个的掩模,两个光致抗蚀剂层同时暴露于光以限定期望的图案。 对铜层上的光致抗蚀剂层的暴露部分进行显影和后烘烤,由此使铜层的选定部分露出。 铜层的露出部分用铜添加电镀,由此形成引线(4)。 对聚酰亚胺膜上的光致抗蚀剂层的暴露部分进行显影和后烘烤,由此使聚酰亚胺膜的选定部分暴露(5,6,7)。 将光致抗蚀剂层的其余部分从铜层中去除并且下面的铜层被蚀刻。 蚀刻聚酰亚胺膜的露出部分,并且将光致抗蚀剂层的剩余部分从聚酰亚胺膜中除去。

    Printed wiring board
    120.
    发明公开
    Printed wiring board 失效
    Gedruckte Schaltungsplatte。

    公开(公告)号:EP0346522A2

    公开(公告)日:1989-12-20

    申请号:EP88113478.7

    申请日:1988-08-19

    Abstract: The invention relates to a printed wiring board which forms printed circuit conductors (2) on at least one surface of a base plate (1) and having a solder resist layer (3) on at least a portion of the base plate (1) having the conductors (2). The solder resist film (3) is a foamed material which contains a foamable agent mixed with a main composition of the solder resist film forming ink.

    Abstract translation: 本发明涉及一种在基板(1)的至少一个表面上形成印刷电路导体(2)并且在基板(1)的至少一部分上具有阻焊层(3)的印刷电路板,其具有 导体(2)。 阻焊膜(3)是含有与阻焊膜形成用油墨的主要成分混合的发泡剂的泡沫材料。

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