A photo-luminescent liquid crystal display (PL LCD) includes: a light
control unit which includes a liquid crystal (LC) layer modulating the UV
light and electrodes driving the LC layer; and a light emitting layer
which emits light by the UV light transmitted through the light control
unit. The light emitting layer includes inorganic phosphors and
semiconductor quantum dots (QDs) having a quantum confinement effect. The
PL LCD includes adding QDs having a high quantum efficiency into
luminescent substances having lower light utilization efficiency than
other colors, for example, red phosphor having very low quantum
efficiency to improve the light utilization efficiency, thereby improving
the color balance.