Lately, the media, research institutes and stock firms are scrambling to release data on the marketability of QD-LCD TV which is the LCD TV applying the QD (quantum dot) materials to the LED backlight. In the strict sense, it is not a LCD technology but a backlight technology. The QD-LCD BLU (backlight unit) can be divided into the three types; one is applying the QD material directly to the LED chip, another is arranging it in front of the LED chip; and lastly it is placing it in between LCD and Light Guide Plate after filming by inserting the QD materials to the barrier film.