Transparent reflective liquid crystal display

摘要

A transparent reflective liquid crystal display device (LCD) is provided that is adaptive for improving a light efficiency and color purity. In the device, a first circular polarizer transmits circular-polarized light having a first direction input from the backlight unit while reflecting circular-polarized light having a second direction contrary to the first direction. A second circular polarizer is arranged in opposition to the first circular polarizer to transmit the circular-polarized light having the second direction while reflecting the circular-polarized light having the first direction. A circular-polarizing color filter is provided at one side of the second circular polarizer to extract circular-polarized light of a specific visible light wavelength band in the circular-polarized light having the first direction. A reflecting member is arranged in opposition to the second circular polarizer to reflect external light, and has a hole formed in opposition to the circular-polarizing color filter to transmit the circular-polarized light having the specific visible light wavelength band via the hole. An absorptive color filter and a CLC color filter may be used in the LCD to improve color purity.