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As products become lighter, thinner and shorter, more and more FPC applications are used, and some replace traditional PCBs. However, no matter how advanced the current FPC is, it still has to be connected to the PCB, and the interface design is still based on the connector. Mainly, how to design the FPC to better meet the assembly requirements of the factory is very important.
The focus of FPC design is to make the wiring (layout) well and the thickness of the stiffener under the gold finger to be correct. Don't make the FPC unable to be inserted into the connector because it is too thick or it is too thin and loose.
Later, I found that the FPC would break occasionally, especially during the HotBar operation. I found that it is not possible to design all the stacked sections of the material on the same vertical plane, so as to disperse the stress concentration, and then later discovered FPC copper foil has the difference between so-called rolled copper (RA) and electrolytic copper (ED). The wrong choice of copper foil will affect the life of the FPC bending times, and then it is found that more than two layers of rolled copper are conducting Electroplating copper is still used in the process, making the characteristics of rolled copper almost disappear.
PCB mounting FPC
It seems to be a lot of nonsense. As electronic products become smaller and smaller, FPC connectors are getting smaller and smaller. Although FPC does not necessarily become smaller, it feels larger, because it replaces part of the PCB function, and The wiring seems to have become denser. In addition, there are more and more parts adjacent to the FPC connector. It is becoming more and more difficult to assemble the FPC properly. Is there anything special about your company? Is it designed to help the operator confirm that the FPC is installed and positioned? What design or foolproof can help operators complete FPC installation work easily and effortlessly?
The following FPC designs can actually be seen in many mobile phone designs. I just put them forward for your reference and see what other methods you can discuss.
1. Design FPC installation instruction line
FPC installation instruction line Design FPC installation instruction line
After the FPC is designed to install the indicator line on the connector cover, the FPC installation indicator line is just at its edge position, which is helpful to judge whether the FPC is installed to the position.
Setting up the installation instruction line on the front and back of the FPC can help the operator to determine whether the FPC has been correctly installed to the location. The more particular ones will require two lines to be designed. When the FPC is installed to the location, the first indicator line will be The connector is covered, and the second indicator line is left outside the connector, allowing the operator to more clearly judge whether the installation is skewed. Shenzhen Honglijie thinks that in fact, it is enough to have an indicator line. It is better to see a little bit of the indicator line after the connector is covered.
2. Extend the length of the reinforcing plate without adhesive
FPC extends the length of the adhesive-free reinforcement board
The adhesive-free reinforcing plate allows the FPC to be easily grasped, so that the operator can install the FPC into the connector more smoothly.
3. Design extra wings for small FPC
Design extra wings for small FPC
Add an extra small bump/wing/ear (TAB) on the left and right sides of the FPC near the golden finger, so that the operator can easily grasp the FPC and install it into the connector, or design a "grip" "Slid the FPC into the connector after grabbing the two small ears with a small tool.
