High-reflectivity nano film layer for high-power LED lamps and film coating method thereof

Abstract

The invention discloses a high-reflectivity nano film layer for high-power LED lamps, which contains the three components of Al2O3, Al and SiO2 and is coated on the light reflecting surface of the LED lamp by using vacuum ion magnetron sputtering technology. The invention also discloses a film coating method for preparing the high-reflectivity nano film layer, which sequentially comprises the steps of plasma surface modification treatment, the coating of an Al2O3 layer, the coating of an Al layer, the coating of an SiO2 layer and film aging treatment. The film layer prepared by the method hasthe characteristics of high reflectivity and high resistance to oxidization; and the film coating method has the advantages of once film forming without assembly in the film coating process, applicability to continuous mass industrial production, relatively higher production efficiency and relatively higher product yield.

Description

technical field [0001] The invention relates to a nano film layer with high reflectivity for high-power LED lamps and a coating method thereof. Background technique [0002] LED lights have the advantages of long life, high luminous efficiency, no radiation, no pollution, impact resistance, vibration resistance, low power consumption, and wide color temperature range. Therefore, as an emerging green, environmentally friendly, and energy-saving light source, they are widely used in car lights and street lights , flashlights, lamps and other places, high-power LED lights are often used in street lights, tunnel lights, underwater lights, flood lights and other applications. In order to make full use of the light source of LED lights and save power, reflective films are often pasted on LED lights. For high-power LED lights, it is required that the reflective film can work for a long time at a high temperature of 120 degrees Celsius, and the anti-oxidation time is 30,000 hours o...

AI Technical Summary

Problems solved by technology

The reflectivity of aluminum foil is about 60%, the anti-oxidation time is short, and its thickness is generally greater than 0.1mm. When recycling LED lights, the aluminum foil needs to be torn off, which is not environmentally friendly and inconvenient

In addition, during production, aluminum foil needs to be pasted on the light-reflecting surface of the LED lamp. This process will lead to low yield and low production efficiency.

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