BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a plan view showing a suspension-board-with-circuit assembly sheet of an embodiment of a wired-circuit-board assembly sheet of the present invention;
FIG. 2 is a sectional view of the suspension-board-with-circuit assembly sheet shown in FIG. 1 taken along line A-A;
FIG. 3 is an enlarged plan view of a distinguishing mark provided on the suspension-board-with-circuit assembly sheet shown in FIG. 1;
FIG. 4 is an enlarged rear view of the distinguished mark shown in FIG. 3;
FIG. 5 is a production process drawing showing production processes of the suspension-board-with-circuit assembly sheet,
(a) showing the process of preparing a metal supporting board,
(b) showing the process of forming a plurality of insulating base layers on the metal supporting board,
(c) showing the process of forming a conductive pattern on the insulating base layer of each suspension board with circuit and forming a mark forming portion on the insulating base layer at each distinguishing mark, and
(d) showing the process of forming each insulating cover layer on each of the insulating base layers;
FIG. 6 is a production process drawing showing production processes of the suspension-board-with-circuit assembly sheet subsequent to the processes of FIG. 5,
(e) showing the process of forming an etching resist over the entire front surface of the suspension-board-with-circuit assembly sheet which is under production and forming an etching resist on the back side of the same in a predetermined pattern,
(f) showing the process of opening the metal supporting board exposed from the etching resist by etching, and
(g) showing the process of removing the etching resist;
FIG. 7 is an enlarged plan view showing a distinguishing mark of a suspension-board-with-circuit assembly sheet of another embodiment (a second embodiment) of the wired-circuit-board assembly sheet of the present invention;
FIG. 8 is an enlarged rear view showing a distinguishing mark of a suspension-board-with-circuit assembly sheet of still another embodiment (a third embodiment) of the wired-circuit-board assembly sheet of the present invention;
FIG. 9 is an enlarged rear view showing a distinguishing mark of a suspension-board-with-circuit assembly sheet of a further embodiment (a fourth embodiment) of the wired-circuit-board assembly sheet of the present invention; and
FIG. 10 is an enlarged rear view showing a distinguishing mark of a suspension-board-with-circuit assembly sheet of a still further embodiment (a fifth embodiment) of the wired-circuit-board assembly sheet of the present invention.
Patent Application
20070170911
