US Patent 7286101 Image display method and image display system

Images are displayed on an image display screen by projection light for displaying images onto the image display screen. The image display screen is integrally formed with diffusion/reflective parts, which reflect the projection light on a side of the image display screen on which the projection light is incident, and diffusion/transmissive parts, which transmit the projection light in a direction in which the projection light is incident. A first image, which is visible from a side on which the projection light is incident on the image display screen, is displayed by projecting front side projection light onto the diffusion/reflective parts, and a second image, that is visible from a back side of the image display screen, is displayed by projecting back side projection light onto the diffusion/transmissive parts. By doing so, an image display system and method with an improved advertising effect can be provided at low cost.