1. Advantages of Rigid and Rigid Boards

　　There are many advantages to using Rigid-flexBoard, which are listed as follows:

　　1. The distance of signal transmission is shortened and the speed is increased, which can effectively improve reliability

　　The traditional signal transmission through the connector is [circuit board→connector→flex board→connector→circuit board], while the signal transmission of the rigid-flex board is reduced to [circuit board→flex board→circuit board], the signal transmission The distance between them is shortened, and the problem of signal transmission attenuation between different media is also reduced. Generally, the lines on the circuit board are made of copper, while the contact terminals of the connector are gold-plated, and the solder pins are all tin-plated. In addition, solder paste needs to be used for soldering on the circuit board, and the signal transmission between different media will inevitably be somewhat attenuated. If a flexible and rigid board is used, these media will become less, and the ability of signal transmission can also be relatively improved. , For some products with high signal accuracy requirements, it helps to improve their reliability.

　　2. It can effectively save space on the circuit board and save the process of using connectors or HotBar

　　Because the soft and hard boards are already combined, the space that originally needed to use the connector or the HotBar process can be saved. For some soft and hard boards with high density requirements, one less connector is needed. Space is like picking up a treasure. This also saves the cost of using the connector parts or the cost of the HotBar process. In addition, the space between the two flex-rigid boards can be tighter because the connector is omitted.

　　3. Simplify product assembly and save assembly time

　　The use of flexible and rigid boards can reduce the man-hours of SMT printing, because the number of connectors is reduced. It also reduces the man-hours for assembling the whole machine, because the assembly action of inserting the flexible board into the connector or the manufacturing process of the HotBar is omitted. It also reduces the cost of parts management and inventory, because the BOM is reduced, so there is less management.

　　2. Disadvantages of Rigid and Rigid Boards

　　After the introduction of the supplier, I have a general understanding that if you simply compare the [flex-rigid board] with [flex board + circuit board + connector], the biggest disadvantage is that the price of the [flex-rigid board] is relatively expensive. It may be nearly double the price of the original simple [flex board + hard board], but if the price of the connector or the cost of the HotBar is deducted, the price is

　　There may be a tendency to be consistent, and the detailed cost may have to be actuated to have a clearer outline. Another disadvantage is that both the SMT printing and the furnace may need to use a carrier to support the part of the soft board, which virtually increases the assembly cost of the SMT.

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