| 摘要 |
<p>Disclosed is a backlight device which is used for a color liquid crystal display and includes a light source and a backlight housing (23). The light source includes a red light emitting diode (21R), radiating red light, having a peak wavelength »pr such that 625 nm ‰¤ »pr ‰¤ 685 nm, a green light emitting diode (21G), radiating green light, having a peak wavelength »pg such that 505 nm ‰¤ »pg ‰¤ 540 nm, and a blue light emitting diode (21B), radiating blue light, having a peak wavelength »pb such that 420 nm ‰¤ »pb ‰¤ 465 nm. The backlight housing mixes the red light, the green light and the blue light, radiated from the light source, to generate white light. A light emission intensity is adjusted so that a half value width of a spectrum of the red light, a half value width of a spectrum of the green light and a half value width of a spectrum of the blue light are such that 20 nm ‰¤ hwr < 25 nm, 30 nm ‰¤ hwg ‰¤ 40 nm and 25 nm ‰¤ hwb ‰¤ 30 nm, respectively.</p> |
