FPC (Flexible Printed Circuit) is a highly reliable and flexible printed circuit board made of polyimide or polyester film. It has high wiring density and light weight. Thin thickness and good bending characteristics. FPC is a very common material in liquid crystal display modules. In the process of fabricating FPC, the connectivity of the circuit must be ensured, and the circuit must be protected from breakage when using FPC later. Therefore, when the components are used on the FPC, some parts of the components are provided with reinforcing steel sheets. The steel sheets are used to partially reinforce the soft boards in the area so as not to be bent, thus reducing the cause in the later operation. Bending causes the component pins to break and cause defects. In the traditional FPC, the steel sheet for reinforcement is rectangular, and the four corners are sharp and right angles. When the soft board at the edge of the steel sheet is bent, it is easily broken by the right angle of the steel sheet, resulting in The line breakage causes poor product quality and reduces the reliability of the field frequency.
　　 Based on this, the utility model provides a reinforcing steel sheet, which adopts a hemming treatment at a right angle to avoid the FPC at the edge of the reinforcing sheet being punctured at the time of bending, thereby improving the reliability of the product.
　　 A reinforcing steel sheet, comprising:
　　 a steel sheet body; the steel sheet body is arranged in a rectangular structure; and the four corners of the steel sheet body are at right angles;
　　 Four L-shaped edging blocks connected to the steel sheet body; the edging blocks are provided for the elastic soft material, and are connected one by one at right angles of the steel sheet body.
　　 The above-mentioned reinforcing steel sheet and the steel sheet body are used for realizing the reinforcing function, and in order to solve the problem that the right angle of the steel sheet body is easy to poke the FPC, L-shaped edging blocks are respectively arranged at four right angles of the steel sheet body, And the edging block is set for the elastic soft material. When the edge of the reinforcing steel sheet abuts against the bending area on the FPC, the edging block can protect the FPC from being bent when the FPC at the edge of the reinforcing sheet is bent. Being poked to improve the reliability of the product.
　　 In one of the embodiments, the outer side of the hemming block is arranged in a circular arc shape. The arc angle structure setting can passivate the outer side of the edge block to enhance the protection effect on the FPC.