LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE EQUIPPED WITH THIS

摘要

PROBLEM TO BE SOLVED: To provide a lighting device capable of reducing a degree of chromaticity change of emitted light accompanying thickness and length of a light guide plate and a liquid crystal display device quipped with the same.

SOLUTION: The lighting device is provided with a reflection member 3 of a thickness D arranged opposing a light reflection face 1b of a light guide plate 1. A spectral reflectance R (450) of blue light of a wavelength 450 nm in the reflection member 3 and a spectral reflectance R (550) of green light of a wavelength 550 nm in the reflection member 3 are adjusted so as to satisfy a formula (A), where a light intensity ratio of the blue color of the wavelength 450 nm and the green color of the wavelength 550 nm in an incident light Linjust after entering into the light guide plate 1 is made Ninand a light intensity ratio of the blue light of the wavelength 450 nm and the green light of the wavelength 550 nm in a transmitted light Ltis made Nt.

COPYRIGHT: (C)2013,JPO&INPIT