| 摘要 |
PURPOSE:To obtain a two-layered TAB tape material excellent in productivity without deteriorating it in dimensional stability and evenness by a method wherein device holes are provided crosswise to a polyamic acid film, and a set of sprocket holes are provided in both the edges of the film per device hole, the polyamic acid film is bonded to a conductor foil by pressure and turned into imide by burning as it is kept wide. CONSTITUTION:Device holes are provided crosswise to a polyamic acid film which is not completely turned into imide yet by heating and drying through a conventional polyimide film manufacturing device and a set of sprocket holes are provided in both the edges of the film per device hole, the wide polyamic acid film is bonded to a conductor foil by pressure, and the wide polyamic acid film provided with the conductor foil is fully turned into imide by a continuous dryer used in a conventional two-layered flexible printed circuit board manufacturing process to form a conductor wire. By this setup, a two-layered TAB tape can be easily obtained high in productivity and yield and low in cost. |
