Patent ID: 7324178

Claim:
A liquid crystal display device comprising: a liquid crystal display panel for receiving a first light, and for radiating a second light having an image information, the liquid crystal display panel including: i) a first substrate on which a plurality of pixels having a first electrode is formed, ii) a second substrate on which a second electrode opposite to the first electrode is formed, and iii) a liquid crystal layer, disposed between the first and second substrate, which is aligned by an electric field applied between the first and second electrodes; and a light path changing means disposed on the liquid crystal display panel, the light path changing means including a reflection surface, the reflection surface reflecting a part of the second light and outputting a third light having a compensated luminance, and the reflection surface being extended in a first direction perpendicular to an upper surface of the liquid crystal display panel, wherein the light path changing means includes a porous film having a plurality of pores.