Common methods of protecting FPC

                                                     Common methods of protecting FPC

          Because of the softness of FPC, it is easy to break under stress, so it needs some special methods to protect FPC.

          Common methods include:

          1.The minimum radius of the inner angle of the flexible contour is 1.6 mm. the larger the radius, the higher the reliability, the stronger the anti-tearing ability is, and the more the angle of the shape is, the more a line can be added near the edge of the plate. Prevent FPC from being torn.

          2.Cracks or grooves on FPCs must be terminated at a circular hole of not less than 1.5 mm in diameter, which is also required when the FPC of the adjacent two parts need to be moved separately.

         3.In order to achieve better flexibility, the bending region should be selected in the area with uniform width, and avoid the variation of FPC width and uneven line density in the bending region as far as possible.

         4.Stiffener, also known as stiffener, is mainly used to obtain external support. The materials used are PIN Polyester, glass fiber, polymer material and aluminum sheet. Reasonable design of the position, area and material of the reinforcing plate has great effect on avoiding FPC tear.

         5.In the multi-layer FPC design, air gap layering design is needed for the areas that need to bend frequently in the process of using the product, and the thin Pi material is used as far as possible to increase the softness of FPC. Prevent FPC from breaking during repeated bending.

         6.When space permits, double-sided adhesive fixing area should be designed at the joint of gold finger and connector to prevent gold finger and connector from falling off during bending.

         7.In the connection of FPC and connector, the FPC positioning screen printing line should be designed to prevent the misalignment and insertion of FPC in the assembly process, which is beneficial to the inspection of production.