1.4 Rigid - flexible multi-layer PCB
This type is usually one or two rigid PCB, containing essential that constitute a whole soft PCB. Flexible PCB layers are laminated within the rigid multi-layer PCB, which is to have special electrical requirements or to be extended to rigid circuit outside the dynasty Z loaded with planar circuit capacity. These products are put in weight and volume compression as the key, and to ensure high reliability, high density packaging and excellent electrical characteristics of electronic equipment has been widely used.
Rigid - flexible multi-layer PCB can be single or double the number of PCB's at the end of soft glue pressed together to become rigid part of the glue to become soft in the middle is not part of the rigid part of the Z side of the hole with a metal cross connected. Can be flexible to rigid multilayer laminated to the inside line. Such PCB increasingly used in packaging that require ultra-high density, excellent electrical properties, high reliability and strict restrictions on the volume of the occasion.
Already has a series of hybrid multi-layer flexible PCB components designed for the military aviation electronic equipment in these applications, the weight and size is essential. In order to meet the required weight and size limits, the internal packing density must be very high. In addition to the high circuit density outside, in order to minimize crosstalk and noise, all signal transmission lines must be shielded. To use the shield wire separation is virtually impossible to economically package to the system. Thus, the multi-storey mixed use
Flexible PCB manufacturers to achieve their interconnection. This component will shield the signal lines included in the flat ribbon cable in flexible PCB, rigid PCB which is a necessary component. Where a high level of operations in the comparison, manufacturing is completed, PCB to form a 90 ° S-shaped curve, which provides a way to interconnect z plane, and x, y and z plane vibration stress, tin solder joints in eliminate the stress - strain. flexible pcb suppliers.