How to design a more reasonable mobile phone shield

The shielding cover mainly prevents electromagnetic interference (EMI) and shields the components and LCM on the PCB. It is usually a two-piece type. The bottom part and the motherboard SMT are the frame, and the top part is matched with the bracket. Cover, but how to design a mobile phone shield reasonably? Design guidance: (1) Shielding_frame has a flatness of 0.13mm, sufficient strength, a thickness of 0.3mm, a height of 2mm, and a distance of 0.75mm from the edge of the PCB board. The inner edge of the frame is 0.8mm away from the outer frame. (2) Shieling_cover The thickness is 0.2mm; sometimes for the heat dissipation and cooling of the components, small round holes can be added to the cover, the diameter is ￠1.0~￠1.5mm, too large will cause poor shielding effect. (3) Shielding_can shielding LCM: All matching uses 0 matching, and the distance between the side of shielding_can and the side of the LCD viewing area is greater than 1.00. Material application: Generally, the bracket can use Cu-C7521 (R-1/2H or R-OH) ( Nickel white copper, nickel silver, Nickel Silver), stainless steel, tin-plated steel strip (tinplate), etc., it is recommended to use nickel white copper. Reason: nickel silver is better in terms of welding, heat dissipation and steam. The cover is generally made of stainless steel SUS304 (R-1/2H; the shielding cover can be made of 0.1 or 0.15mm thick material, and 0.15mm should be used as much as possible; the bending type shielding bracket should be 0.20mm thick material as far as possible, and 0.15mm thick material should be used less; The tensile shielding bracket must be made of materials with a thickness of 0.2mm or more. You also need to know the knowledge of mobile phone shielding cover, please add Xiaoshuo WeChat:. Hardware, the shielding cover is 4 days out of the mold, and the daily output is 3000000 strokes. 15 years of focus, it is you A relaxed and pleasant partner!