Patent ID: 7562988

Claim:
A two-dimensional image display device comprising: a red light source for emitting red light; a green light source for emitting green light; a blue light source for emitting blue light; and a means for forming a two-dimensional image by using the red light, the green light and the blue light emitted from the respective red, green and blue light sources, wherein a center wavelength of the blue light emitted from the blue light source is not less than 420 nm and is not larger than 455 nm, wherein a center wavelength of the red light emitted from the red light source is not less than 635 nm and is not larger than 655 nm, wherein a center wavelength of the green light emitted from the green light source is not less than 505 nm and is not larger than 550 nm, wherein a ratio of the blue light emitted from the blue light source to the green light emitted from the green light source during a white display is not less than 0.5:1 and is not larger than 4:1, and wherein a ratio of the red light emitted from the red light source to the green light emitted from the green light source during the white display is not less than 0.4:1 and is not larger than 1.3:1.