FLEx Lighting is an optical technology company with more than eight years of experience. FLEx is headquartered in Chicago. FLEx's front light panels provide high-quality illumination for reflective displays using the world's thinnest light guide. FLEx's lighting panels have the most elegant and efficient headlights, with only one LED coupled with an optical engineering film. The FLEx front light panel is located on top of the reflective LCD, reflective electronic paper display, and transflective LCD. Through the transparent plastic film, we have discovered on-demand lighting that users cannot perceive.