Patent ID: 8390765

Claim:
A liquid crystal display apparatus using a backlight employing an edge light method, the liquid crystal display apparatus comprising: a laser source unit which emits laser light having a plurality of different wavelengths; a light guide plate which receives the laser light from a side surface thereof, and outputs two-dimensional laser light having a predetermined spread angle from an upper surface thereof perpendicular to the side surface, a liquid crystal panel having thereinside color filters corresponding to the plurality of wavelengths; a wavelength selection substrate including wavelength selection sections which are arranged, for the respective wavelengths, between the liquid crystal panel and the upper surface of the light guide plate in a manner as to correspond to an arrangement of the color filters, and which each transmit, toward the liquid crystal panel, a predetermined wavelength of laser light outputted from the light guide plate and reflect, toward the light guide plate, laser light having wavelengths other than the predetermined wavelength, outputted from the light guide plate; and a reflector which is arranged on the side of a bottom surface, which opposes the upper surface of the light guide plate, and reflects laser light having been reflected from the wavelength selection substrate and passed through the light guide plate to thereby cause the laser light to re-enter the wavelength selection substrate through the light guide plate.