Printed circuit board realizing weldable metal mini-heat-radiators by metal aluminum and manufacturing method of printed circuit board

Abstract

The invention provides a printed circuit board realizing weldable metal mini-heat-radiators by metal aluminum and a manufacturing method of the printed circuit board. The printed circuit board comprises a metal aluminum substrate layer and an insulation layer which are stacked. A copper layer circuit is arranged on the upper surface, distant from the metal aluminum substrate layer, of the insulation layer. The upper surface, contacting with the insulation layer, of the metal aluminum substrate layer is a weldable metal plating layer. The insulation layer is provided with at least one cylindrical through hole. The printed circuit board further comprises at least one metal aluminum mini-heat-radiator integrated with the metal aluminum substrate layer and the weldable metal plating layer. The metal aluminum mini-heat-radiators protrude out of the surfaces of the metal aluminum substrate layer and the weldable metal plating layer and are embedded into the cylindrical through holes of the insulation layer. The copper layer circuit comprises two heating element connection parts which are arranged on two sides of end faces of the metal aluminum mini-heat-radiators and insulated with the same. The technical problems of heat transmission and radiation and weldability in existing printed circuit boards can be solved effectively.

Description

technical field [0001] The invention relates to a printed circuit board technology, in particular to a printed circuit board which uses metal aluminum to realize a weldable metal micro radiator and a preparation method thereof. Background technique [0002] Printed Circuit Board (PCB) is one of the important parts of the electronics industry. PCB can provide fixed and assembled mechanical support for electronic components, and can realize electrical connection between electronic components. In addition, the component numbers and some graphics are printed on the PCB, which provides convenience for component insertion, inspection and maintenance. Almost every kind of electronic equipment, ranging from electronic watches and calculators to large computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, printed circuit boards are used for the electrical interconnection between them. [00...

AI Technical Summary

Problems solved by technology

[0005] 2. High-power electronic devices, light-emitting diodes, and LED chips will generate a lot of heat when the array is working stably. The accumulation of heat not only affects the performance of power devices, but also changes the life of power devices, which will eventually lead to failure of power devices.

Images