Patent ID: 11950357
Assignee: QING DING PRECISION ELECTRONICS (HUAIAN) CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A method for manufacturing a circuit board for transmitting high-frequency signal, comprising:
providing a first circuit board, the first circuit board comprising a first conductive wiring layer, a first base layer, and a second conductive wiring layer stacked in that order;
providing a second circuit board, the second circuit board comprising a second base layer and a third conductive wiring layer stacked together, the third conductive wiring layer comprising at least one power line, at least one signal line, at least one control line, at least two first ground lines, and at least one second ground line, the signal line and the control line disposed at opposite sides of the power line, the first ground lines disposed at opposite sides of the signal line, the second ground line disposed at a side of the control line away from the power line, the second circuit board divided into a first region containing the signal line and a second region besides the first region, the second region the power line and the control line disposed in the second region;
providing at least one third circuit board, each third circuit board comprising a third base layer and a fourth conductive wiring layer stack together;
providing a fourth circuit board, the fourth circuit board comprising a fourth base layer and a fifth conductive wiring layer stacked together, the fifth conductive wiring layer comprising at least one power line or at least one control line;
providing a fifth circuit board, the fifth circuit board comprising a fifth base layer and a sixth conductive wiring layer stacked together, and the sixth conductive wiring layer comprising at least one power line or at least one control line;
providing a sixth circuit board, the sixth circuit board comprising a sixth base layer and a seventh conductive wiring layer stacked together, the seventh conductive wiring layer being a ground shielding layer;
stacking the first circuit board, the second circuit board, and the third circuit board, and stacking the fourth circuit board, the sixth circuit board, and the fifth circuit board on the third circuit board, causing the sixth circuit board to be between the fourth circuit board and the fifth circuit board, and pressing them to cause each of the fourth circuit board, the sixth circuit board, and the fifth circuit board to correspond to the first region.