Screen sounding exciter and electronic device

An electronic device, comprising a display screen, a middle frame fixing the display screen, a back cover fixedly connected to the middle frame, and a battery accommodated in the middle frame, wherein the electronic device further comprises at least one screen sounding exciter arranged on the back cover and connected to the display screen;

• wherein,
• the screen sounding exciter comprises a first magnetic circuit system, an electromagnetic driving system, and a second magnetic circuit system which are sequentially arranged along a vibrating direction of the display screen from top to bottom, the first magnetic circuit system is fixed on the display screen, and the electromagnetic driving system is fixed on the back cover;
• the screen sounding exciter further comprises an elastic member, one end of the elastic member is connected to the second magnetic circuit system to elastically support the second magnetic circuit system and the other end of the elastic member is fixed to the electromagnetic driving system;
• the electromagnetic driving system comprises a first electromagnet, a second electromagnet, and a magnetic conductive shell isolating a bottom of the first electromagnet from a top of the second electromagnet;
• a top of the first electromagnet is spaced apart from a bottom of the first magnetic circuit system to form a first vibrating gap;
• a bottom of the second electromagnet is spaced apart from a top of the second magnetic circuit system to form a second vibrating gap.