Double-sided aluminum substrate with embedded high-thermal-conductivity graphite flakes and manufacturing method of double-sided aluminum substrate

Abstract

The invention discloses a double-sided aluminum substrate with embedded high-thermal-conductivity graphite flakes and a manufacturing method of the double-sided aluminum substrate. The double-sided aluminum substrate comprises an aluminum substrate, the graphite flakes are respectively arranged on the upper and lower surfaces of the aluminum substrate, a copper foil layer is arranged outside the graphite flakes, an electroplating anticorrosive layer is arranged on the copper foil layer, through holes are formed among the aluminum substrate, the graphite flakes and the copper foil layer, and a metal conduction layer is electroplated on the inner side surface of each through hole. According to the double-sided aluminum substrate with embedded high-thermal-conductivity graphite flakes and the manufacturing method of the double-sided aluminum substrate, heat in the aluminum substrate can be absorbed through heat absorption pieces arranged in the aluminum substrate, the temperature in the aluminum substrate can be reduced; the graphite flakes are arranged on the two sides of the aluminum substrate, and the graphite flakes are an allotrope of carbon, are gray black and non-transparent solids, are stable in chemical property and resistant to corrosion, and the graphite has high temperature resistance and good electric conduction and heat conduction performance, and the absorbed heat is transferred to radiating fins from radiating holes and is radiated, so that electronic components can be prevented from losing efficacy due to high temperature, and the service life of a panel is prolonged.

Description

technical field [0001] The invention relates to the technical field of double-sided aluminum substrates, in particular to a double-sided aluminum substrate embedded with high thermal conductivity graphite sheets and a manufacturing method thereof. Background technique [0002] Aluminum substrate is a metal-based copper-clad laminate with good heat dissipation function. Generally, a single-sided panel consists of three layers, which are circuit layer (copper foil), insulating layer and metal base layer. It is commonly used in LED lighting products and has two sides. , the white side is for soldering the LED pins, and the other side shows the natural color of aluminum. Generally, it will be in contact with the heat-conducting part after applying the heat-conducting paste. [0003] With the continuous updating and development of the technology of making printed circuit boards with metal substrates, in the actual use of traditional double-sided aluminum substrates, usually many ...

AI Technical Summary

Problems solved by technology

[0003] With the continuous updating and development of the technology of making printed circuit boards with metal substrates, in the actual use of traditional double-sided aluminum substrates, usually many double-sided panels will face, multi-layer boards have high density, high power, and difficult heat dissipation; conventional High-quality printed board substrates such as FR4 and CEM3 are poor conductors of heat, with interlayer insulation, heat cannot be dissipated, and local heating of electronic equipment cannot be ruled out, resulting in thermal expansion and high temperature failure of electronic components, thereby reducing the service life of the panel

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