Anti-interference flexible circuit board of audio apparatus with camera function, method, and apparatus

An anti-interference flexible circuit board of an audio apparatus with a camera function, comprising:

• a flexible conductive laminated structure, configured as an integrated flexible ribbon structure and longitudinally divided into a mounting portion and a connecting portion, wherein the connecting portion has a width of 2 mm to 12 mm;
• the flexible conductive laminated structure comprises:
• a first conductive layer and a second conductive layer that serve as outer signal layers, and a core layer located between the first conductive layer and the second conductive layer, wherein the first conductive layer, the core layer, and the second conductive layer are separated by an insulating medium;
• and
• the first conductive layer and/or the second conductive layer is provided with a differential signal line group and a main clock line, the differential signal line group is used to transmit a digital video signal, the main clock line is used to synchronize clock frequencies of a master device and a slave device, and a reference potential layer is formed in at least a part of the core layer;
• an electromagnetic shielding film, covering outer surfaces of the first conductive layer and the second conductive layer, such that in at least a part of the connecting portion, the core layer, the differential signal line group, and the main clock line are together wrapped in a shielding cavity formed by the electromagnetic shielding film;
• and
• a package body, disposed on the connecting portion to enclose the flexible conductive laminated structure and form outer-layer protection,
• wherein the flexible conductive laminated structure is further provided with an analog audio drive line group and an electrically independent microphone ground line, the analog audio drive line group is used to transmit a drive current to an audio transducer, and the microphone ground line is physically isolated from a main ground line network of the flexible conductive laminated structure and electrically connected to the main ground line network only at a terminal portion and/or a pad position.