This product is a thin multi-layer reflective polarizing film, which is mainly composed of two different high and low refractive index nanomaterials to form a multi-layer film. When unpolarized white light passes through the multi-layer film, it undergoes multiple reflections, and ultimately most light sources will penetrate the polarizing film, playing a brightening effect to improve display efficiency, uniformity, and defect concealment, and prevent wetting of smooth surfaces. And it can greatly improve the battery life of electronic products.

Based on the design of BDEF, the company continues to research and develop, break through technical bottlenecks, and develop and produce APF products. APF, due to the good refractive index control of multi-layer films, has better color deviation effects at large angles than DBEF.