A backlight device (100) includes a light guide plate (110), a light source (130) arranged at a side face of the light guide plate, a lamp cover (140) surrounding the light source, a light reflection plate (120) arranged below the light guide plate, a light diffusion plate (150) arranged over the light guide plate, and a brightness enhancement plate (160) arranged over the light diffusion plate. The light diffusion plate has a first optical film (151) and a plurality of first bumps (152) formed thereon and extending outwardly and toward the light guide plate. The brightness enhancement plate has a second optical film (161) and a plurality of second bumps (162) formed thereon and extending outwardly and away from the light diffusion structure.

 
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< Membrane for the separation of material mixtures and method for production thereof

> Infrared-reflective material comprising interference pigments having higher transmission in the visible region than in the NIR region

~ 00460