Multi-functional assembly, wireless communication device, and display panel

A display panel, comprising:

• a substrate;
• a functional layer provided on the substrate and comprising a plurality of multi-functional units;
• a shielding layer provided on a side of the functional layer facing the substrate;
• and
• a plurality of connection lines provided on the substrate and respectively connected to the multi-functional units,
• a control circuit connected to the multi-functional unit through the connection line to change an electrical load of the multi-functional unit to control the multi-functional unit to reflect a wireless signal, and
• a radio-frequency circuit connected to the multi-functional unit through the connection line and controls the multi-functional unit to transmit and receive a wireless signal from an antenna.

A multi-functional assembly, comprising:

• a functional layer comprising a plurality of multi-functional units;
• a shielding layer provided on a side of the functional layer;
• and
• a control assembly comprising a radio-frequency circuit and a control circuit, wherein the radio-frequency circuit is connected to the multi-functional unit to control the multi-functional unit to transmit and receive a wireless signal from an antenna, and the control circuit is connected to the multi-functional unit to change an electrical load of the multi-functional unit to control the multi-functional unit to reflect a wireless signal.