公开(公告)号：US06652073B2

公开(公告)日：2003-11-25

申请号：US10265583

申请日：2002-10-08

申请人： Ching-Yu Chou ,  Ching-Te Chou

发明人： Ching-Yu Chou ,  Ching-Te Chou

IPC分类号： B41J216

CPC分类号： B41J2/1753 ,  B41J2/14072 ,  B41J2/1601 ,  B41J2/1623 ,  B41J2/1625 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1643 ,  B41J2/1646 ,  H05K1/028 ,  H05K3/28 ,  H05K2201/0133 ,  H05K2201/0355 ,  H05K2201/0394 ,  H05K2201/09063

摘要： The invention discloses a manufacturing processing of making a flexible printed circuit for inkjet printheads. Through the change of the flexible printed circuit structure, residual stress at the bent part can be reduced and the efficiency and precision of subsequent processes can be increased. The disclosed process is thus able to make products with high reliability and quality. The process involves the steps of: (1) preparing a flexible printed circuit substrate and making a window at a predetermined bent part; (2) coating the substrate with a metal layer so that the substrate become conductive; (3) etching the metal layer through a photolithography process to produce a conductive circuit on the flexible printed circuit; and (4) forming a cover layer (solder mask materials such as epoxy or acrylic resins) at the window. A flexible printed circuit thus produced is pre-bent, easy to attach and align, and has less residual stress and a cover layer or film at the bent part.

摘要翻译： 本发明公开了一种制造用于喷墨打印头的柔性印刷电路的制造工艺。 通过改变柔性印刷电路结构，可以减少弯曲部分的残余应力，提高后续工艺的效率和精度。 因此，所公开的方法能够使产品具有高可靠性和高质量。 该方法包括以下步骤：（1）制备柔性印刷电路基板并在预定弯曲部分制作窗口; （2）用金属层涂覆基板，使基板变得导电; （3）通过光刻工艺蚀刻金属层，以在柔性印刷电路上产生导电电路; 和（4）在窗口处形成覆盖层（诸如环氧树脂或丙烯酸树脂的阻焊材料）。 如此制造的柔性印刷电路预弯曲，易于附着和对准，并且在弯曲部分处具有较小的残余应力和覆盖层或膜。