The utility model discloses a line is buckled and is used the display device that this line was buckled, and wherein, the line is buckled including connecting portion, and with the installation department that connecting portion are connected, connecting portion are equipped with the connecting piece of being connected with display device, the installation department is concave to be equipped with one calorie at least wire casing. The utility model discloses technical scheme's knot line has the card wire casing, and the signal ply -yarn drill is gone into in this calorie of wire casing for the weight of signal line is buckled by this line and is born, thereby non -deformable, pine take off between the connector of messenger's signal line and display device's the connecting terminal, makes the signal line better with connecting terminal's wireless connection, and the signal line can keep good signal transmission ability for a long time.