Circuit Board and Manufacturing Method Thereof, and Terminal Device

A terminal device, comprising:

• a housing;
• a circuit board arranged in the housing, the circuit board comprising:
• a substrate including a radio frequency front-end circuit, a radio frequency back-end circuit, and a pad group, wherein the pad group comprises a first pad electrically connected to the radio frequency front-end circuit and a second pad electrically connected to the radio frequency back-end circuit, and the second pad is spaced apart from the first pad;
• and
• a liquid metal body arranged at a position of the pad group and connecting the first pad to the second pad, so as to electrically connect the radio frequency front-end circuit to the radio frequency back-end circuit;
• and
• an antenna electrically connected to the radio frequency back-end circuit.

A method for manufacturing a circuit board, comprising:

• providing a substrate including a radio frequency front-end circuit, a radio frequency back-end circuit, and a pad group, wherein the pad group comprises a first pad electrically connected to the radio frequency front-end circuit and a second pad electrically connected to the radio frequency back-end circuit, and the second pad is spaced apart from the first pad;
• electrically connecting a test end of a radio frequency test instrument to the first pad, to test the radio frequency front-end circuit;
• and
• arranging a liquid metal body at a position of the pad group after the testing of the radio frequency front-end circuit is completed, to connect the first pad to the second pad, so as to electrically connect the radio frequency front-end circuit to the radio frequency back-end circuit.