Semi-transmission type liquid crystal display device

A semi-transmission type liquid crystal display device comprising:

• a lower substrate having a reflection electrode and a lower orientation film;
• an upper substrate having a color filter and an upper orientation film;
• a liquid crystal layer interposed between the upper and lower substrates;
• a lower phase film positioned on the outer surface of the lower substrate for transforming linearly polarized light into circularly polarized light;
• upper and lower polarization plates provided on the upper and lower phase films, respectively, for transforming natural light from outside into linearly polarized light;
• a reflection-type liquid crystal display area;
• and
• a transmission-type liquid crystal display area, positioned between the upper and lower substrates having no reflection electrode, wherein, in the reflection-type liquid crystal display area:
• the liquid crystal layer has a phase delay value (dΔn) of 0.24-0.27 μm;
• the upper orientation film has an orientation angle of 40° to 50° relative to a horizontal line;
• the lower orientation film has an orientation angle of −10° to −20° relative to a horizontal line;
• and
• the upper polarization plate has a transmission axis angle of 104° to 122.5° and in the transmission-type liquid crystal display area:
• the liquid crystal layer has a phase delay value (dΔn) of 0.24-0.40 μm;
• the lower phase film has a function of λ/4 phase compensation and an optical axis of 50° to 64°;
• and
• the lower polarization plate has a transmission axis angle of 100° to 110° and
• the upper substrate is a glass substrate having a function of λ/4 phase compensation and exhibiting circularly polarized light at 550 nm.