Patent ID: 8113901

Claim:
A manufacturing method of a 3D display device and a grating device thereof, comprising the steps of: providing a photopolymerization polymer solution, an electrochromic solution, a first transparent conductive substrate and a second transparent conductive substrate; mixing a specific quantity X of the photopolymerization polymer solution with a specific quantity Y of the electrochromic solution to produce a grating manufacturing solution; packaging the grating manufacturing solution between the first transparent conductive substrate and the second transparent conductive substrate; projecting a light through a photomask to the grating manufacturing solution, such that the grating manufacturing solution projected by the light is polymerized and cured to form a transparent fence-shaped isolating element, and the grating manufacturing solution masked by the photomask remains its original fluid state to produce a grating device; and installing the grating device on a side of a display device, and electrically coupling the first and second transparent conductive substrates to an electrode portion, such that a bright/dark grating effect is produced between the grating manufacturing solution and the isolating element after an electric power is passed through, so as to produce the grating device of the 3D display device.