Patent ID: 8093502
Filing Date: 2012-01-10
Classification: H05K,Y10T

Abstract:
1. A flex-rigid printed wiring board comprising: a plurality of rigid substrates each comprising an insulative base material and a conductor circuit provided on the insulative base material; a flexible substrate configured to be bent and comprising an insulative base material, a conductor circuit provided on the insulative base material of the flexible substrate and a cover lay covering the conductor circuit of the flexible substrate; and a conductor lump formed through the flexible substrate and the rigid substrates, the conductor lump being configured to provide electrical connection and connecting the flexible substrate to the rigid substrates such that the rigid and flexible substrates are lap-joined at interlayer connection portions of the rigid and flexible substrates via the conductor lump, wherein the insulative base material of the flexible substrate comprises a bendable base material comprising a glass cloth impregnated with a resin, the conductor circuit of the flexible substrate is formed on one side of the flexible substrate and connected to the conductor lump, the flexible substrate has a conductor pattern on the other side of the flexible substrate, the conductor pattern of the flexible substrate is not electrically connected to the conductor circuits of the rigid and flexible substrates, the conductor circuit of the flexible substrate has a plurality of wiring patterns formed at the bending portion, and each of the wiring patterns has a swelling portion or a curved portion formed with respect to a direction of a line width of the wiring patterns.