What is the double-sided optical copper foil？

 However, based on general knowledge, a double-sided optical copper foil could refer to a thin layer of copper that has been processed to have optical properties on both sides. This type of copper foil is commonly used in electronic devices such as smartphones, tablets, and computers, where it acts as a conductor for electrical signals while also providing optical functionality such as brightness enhancement, reflection reduction, and color saturation improvement. It is usually produced through a complex manufacturing process involving the deposition of dielectric layers and the utilization of advanced optical technologies.