1. A circuit holding device for a display module, the display module comprising a display panel and a front frame disposed around a periphery of the display panel, the circuit holding device comprising:an external circuit terminal component, disposed external to the display panel and the front frame, comprising:
a casing, the casing having an upmost surface perpendicular to a plane of the display panel; and
a plug connector, arranged on the upmost surface, the plug connector comprising a first portion and a second portion, the first portion being parallel to the upmost surface of the casing and configured to extend towards a backside of the display panel, the second portion being perpendicular to the upmost surface of the casing and being configured to detachably connect to a bottom of the front frame of the display panel through the first portion; and
a circuit board, accommodated in the external circuit terminal component and electrically connected to the display module.