Terminal

1. A terminal, comprising a main board, a middle frame, a radio frequency circuit layer, a screen, and a plurality of antennas, wherein

the middle frame is located between the main board and the radio frequency circuit layer, the radio frequency circuit layer is located between the screen and the middle frame, and the plurality of antennas are connected to the main board by using radio frequency lines in the radio frequency circuit layer;

wherein the radio frequency circuit layer comprises:

a radio frequency wiring layer provided with a plurality of the radio frequency lines, wherein each of the antennas is connected to the main board by using a corresponding radio frequency line;

a first ground layer located on a first side of the radio frequency wiring layer, wherein the first ground layer is connected to the middle frame; and

a second ground layer located on a second side of the radio frequency wiring layer, wherein the second ground layer is connected to the screen.

2. The terminal according to claim 1 , wherein the radio frequency circuit layer at least partially covers an area on the screen at a predetermined distance from an edge of the screen.

3. The terminal according to claim 1 , wherein the middle frame is provided with a first through hole, and an antenna feed point of the antenna is disposed on the inner wall of the first through hole; and

the radio frequency circuit layer is provided with a first opening, and the radio frequency line passes through the first opening and is connected to the antenna feed point.

4. The terminal according to claim 3 , wherein the radio frequency line passes through the first opening and is connected to the antenna feed point by using silver glue or a metal gasket.

5. The terminal according to claim 4 , wherein in a case that the radio frequency line passes through the first opening and is connected to the antenna feed point by using the silver glue, the first opening is an opening penetrating the first ground layer; and the first through hole is filled with the silver glue.

6. The terminal according to claim 5 , wherein there is a gap between the antenna feed point and the radio frequency line.

7. The terminal according to claim 4 , wherein in a case that the radio frequency line passes through the first opening and is connected to the antenna feed point by using the metal gasket, the first opening is an opening that penetrates the radio frequency circuit layer; and

the metal gasket covers the first opening, a first surface of the metal gasket is connected to the radio frequency line, and a second surface of the metal gasket is connected to the antenna feed point.

8. The terminal according to claim 1 , wherein a feeding antenna is disposed between the middle frame and the screen, and the feeding antenna is connected to the radio frequency line and coupled with the antenna disposed on the middle frame.

9. The terminal according to claim 8 , wherein the middle frame is provided with a second through hole, and the antenna is disposed on the inner wall of the second through hole; and

the radio frequency circuit layer is provided with a second opening, the second opening is an opening penetrating the radio frequency circuit layer, and the feeding antenna is located in the second opening.

10. The terminal according to claim 1 , wherein the radio frequency circuit layer is connected to the main board by using a board-to-board connector.

11. The terminal according to claim 10 , wherein the radio frequency circuit layer is adjacent to a first surface of the middle frame, the main board is adjacent to a second surface of the middle frame, and the first surface and the second surface are arranged opposite to each other; and

the middle frame is provided with a third opening, and the board-to-board connector passes through the third opening and is separately connected to the radio frequency circuit layer and the main board.

12. The terminal according to claim 1 , wherein the radio frequency circuit layer is connected to the screen by using foam.