Flexible circuit board, display module and display apparatus

A display module, comprising a flexible circuit board;

• wherein flexible circuit board comprises a connection portion extending along a first direction, wherein the connection portion comprises:
• a first circuit board layer group comprising a first substrate and a first line layer, wherein the first line layer is arranged at a side of the first substrate, the first line layer comprises a plurality of grounding units spaced apart and arranged along the first direction, a first line portion is arranged at a side of the plurality of grounding units, and the first line portion comprises at least one first grounding line;
• a first insulation layer arranged at a side of the first line layer away from the first substrate, wherein the first insulation layer comprises an exposed region, an orthographic projection of the exposed region on the first substrate overlaps with orthographic projections of the grounding units on the first substrate, and the first insulation layer exposes at least a part of the at least one first grounding line;
• and
• an electromagnetic shielding layer arranged at a side of the first insulation layer away from the first substrate, wherein the electromagnetic shielding layer is connected to the grounding units through the exposed region and is connected to an exposed part of the at least one first grounding line.