Image screen

An image screen, comprising:

• a transparent substrate;
• a metal film, disposed on a first surface of the transparent substrate with direct contact, having a thickness being predetermined;
• a dielectric stack layer, disposed over the metal film;
• and
• a reflective layer disposed on an edge of the dielectric stack layer and opposite to the transparent substrate,
• wherein the metal film and the dielectric stack layer function together to selectively reflect a light with a portion of wavelength for red, green and blue lights in substantial separation,
• wherein the light is incident on the screen in a sequence consisting of the transparent substrate, the metal film, the dielectric stack layer and the reflective layer.

An image screen, comprising:

• a transparent substrate;
• a metal film, disposed on a first surface of the transparent substrate with direct contact, having a thickness being predetermined;
• a dielectric stack layer, disposed over the metal film;
• and
• a light absorbing layer disposed on an edge of the dielectric stack layer and opposite to the transparent substrate,
• wherein the metal film and the dielectric stack layer function together to selectively reflect a light with a portion of wavelength for red, green and blue lights in substantial separation,
• wherein the light is incident on the screen in a sequence consisting of the transparent substrate, the metal film, the dielectric stack layer and the light absorbing layer.

An image screen, comprising:

• a transparent substrate;
• a metal film, disposed on a first surface of the transparent substrate with direct contact, having a thickness being predetermined;
• a diffusion micro-structure layer, disposed on a second surface of the transparent substrate and opposite to the metal film;
• and
• a dielectric stack layer, disposed over the metal film,
• wherein the metal film and the dielectric stack layer function together to selectively reflect a light with a portion of wavelength for red, green and blue lights in substantial separation,
• wherein the light is incident on the screen in a sequence consisting of the diffusion micro-structure layer, the transparent substrate, the metal film and the dielectric stack layer.