LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which contrast is high and visibility is high even both at the time of lighting a illuminator and at the time of non-lighting the illuminator in a thin liquid crystal display device having a lighting function. SOLUTION: A thin illuminator is arranged at the front surface of a liquid crystal display panel 2 and a reflection plate 3 is arranged at the rear surface of the liquid crystal panel 2. The illuminator has a light transmission body 11 and a light source 12 arranged at the end face of the light transmission body 11 and light-emitting side flat surfaces 14 and ruggedness pattern formed by surfaces roughly parallel with the light-emitting flat surfaces and surfaces roughly vertical to the light-emitting side flat surfaces are provided on the surface of the liquid crystal panel side of the light transmission body 11. Moreover, these roughly vertical surfaces have inclinations to directions along which widths of protruding parts of ruggedness shapes become narrower toward tops in the range of not larger than 10 deg. with respect to surfaces perpendicular to the light-emitting side flat surfaces to be made to be a constitution in which of a die is easily removed.