Patent ID: 7786389
Filing Date: 2010-08-31
Classification: H01L,H01R,H05K

Abstract:
1. A flexible printed wiring board having a bending portion configured to be bent around a bending axis and a plurality of element mounting portions positioned along the bending axis and configured to be mounted with circuit elements, the flexible printed wiring board comprising: a first insulating layer having a first surface and a second surface on an opposite side of the first surface; a first conductor layer formed in the element mounting portions and the bending portion; a second conductor layer formed in the element mounting portions and being absent in the bending portion; a third conductor layer disposed between the first conductor layer and the second conductor layer and formed in the element mounting portions and the bending portion; and a second insulating layer formed over the second conductor layer and between the second conductor layer and the third conductor layer, wherein the first conductor layer is formed on the first surface of the first insulating layer, the third conductor layer is formed on the second surface of the first insulating layer, the first and second insulating layers extend over the bending portion and the element mounting portions, the third conductor layer has a conductor pattern which imparts a ground potential, the conductor pattern of the third conductor layer includes a plane pattern covering substantially an entire area of the second surface of the first insulating layer in the bending portion and formed in the bending portion, and the second conductor layer is positioned inward and the first conductor layer is positioned outward when the flexible printed wiring board is bent around a bending axis.