Flexible printed circuit and manufacturing method therefor

Details Flexible printed circuit and manufacturing method therefor Flexible printed circuit and manufacturing method therefor

1996-08-23

1997-12-23

Lam, Cathy F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428209, 428901, 361749, 361750, B32B 516, B32B 300, H05K 100

Patent

active

057005621

ABSTRACT:
A composite sheet comprises a first resin film; and a second resin film laminated on the first resin film; wherein two ellipses of coefficient of linear expansion are created on polar coordinates in corresponding parts of the first and second resin films by a predetermined method and the two ellipse are overlapped so as to match in the center point and coordinate axes X and Y, and the maximum value of a linear expansion coefficient difference between the two resin films is equal to or less than a predetermined value.

REFERENCES:
patent: 3346415 (1967-10-01), Hachenberger
patent: 4311749 (1982-01-01), Hiraiwa et al.
patent: 5374469 (1994-12-01), Hino et al.

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