TRANSELECTIVE LCD IN WHICH REFLECTED LIGHT PASSES THROUGH COLOR FILTERS TWICE, TRANSMITTED LIGHT PASSES THROUGH COLOR FILTER ONLY ONCE, BUT ALSO PASSES THROUGH ADDITIONAL LAYER OF CHOLESTERIC LIQUID CRYSTAL OR BAND-PASS FILTER

摘要

A phase difference plate and a liquid-crystal layer are provided between a polarizing plate and a selective reflection layer formed of cholesteric liquid crystal. A first color filter layer is provided on the polarizing plate side of the selective reflection layer. On the back side of the selective reflection layer, a second color filter layer is arranged. On the back side of the second color filter layer, a backlight is provided. When a liquid-crystal display device functions as a reflective liquid-crystal display device, light entering through the polarizing plate is reflected totally by the selective reflection layer and passes through the first color filter layer twice. When the liquid-crystal display device functions as a transmission liquid-crystal display device, light from the backlight passes through the selective reflection layer. Then, the light passes through the second and first color filter layers once and is outputted.