| 主权项 |
1. A manufacturing method of a printing circuit board (PCB) with an insulated micro-radiator, consisting of:
providing a high thermal conductive and electrical insulating substrate covered by copper foils on a top surface and a bottom surface thereof, and forming one or more cylindrical insulated micro-radiators by cutting the substrate according to predetermined size; providing N layers single-sided or double-sided copper clad plates and N−1 layers prepregs, cutting the copper clad plates and the prepregs into working panels of the PCB according to predetermined size, and manufacturing inner-layer circuit in the copper clad plates by using traditional image transferring method for a PCB copper pattern, wherein N>1; manufacturing one or more mounting holes in the copper clad plates and the prepregs by using drilling, milling, or punching, the shape and size of the mounting holes adapting to the cylindrical insulated micro-radiators; laminating the copper clad plates and the prepregs with the conventional multi-layer PCB laying up method, making two copper clad plates to be located at the top and the bottom layers respectively, embedding the cylindrical insulated micro-radiators into the corresponding mounting holes; pressing the copper clad plates and the prepregs together with the standard pressing method of the conventional multi-layer PCB; according to the manufacturing method of a conventional PCB, carrying out hole drilling, Plated Through Hole plating, outer-layer image transferring, solder resist printing, surface finishing, outline fabrication for laminated working panels and soldering heating elements on the top surface of the insulated micro-radiators, then the PCB with the insulated micro-radiator is done. |
