Patent ID: 7139042

Claim:
A display device comprising: a light source for radiating white colored light; an image display unit for receiving the white colored light from the light source to display desired images; a beam splitter placed between the light source and the image display unit to split the white colored light radiated from the light source into a first light ray in a direction of a left eye of a user and a second light ray in a direction of a right eye of the user, and to feed-the first light ray and the second light ray to the image display unit; and an optical shutter provided at any one of front and rear surfaces of the beam splitter and having a first shutter members and second shutter members with variable light transmittance to control the light transmission such that the first light ray split at the beam splitter reaches the user through the first shutter members and the second light ray split at the beam splitter reaches the user through the second shutter members, wherein the beam splitter has a first pitch and the optical shutter has a second pitch, and wherein the first pitch matches the second pitch.