Patent ID: 9599827
Date: 2017-03-21
CPC Classifications: G02B,G02F,H01J,H04N

Claim:
1. A three-dimensional (3D) display device, comprising a non-polarized light display unit and a liquid crystal (LC) barrier, the LC barrier receiving non-polarized light emitted from the non-polarized light display unit, wherein the LC barrier comprises: a liquid crystal cell arranged at one side of the non-polarized light display unit, wherein the liquid crystal cell comprises an upper substrate, a lower substrate and a cholesteric liquid crystal layer provided between the upper substrate and the lower substrate, and the cholesteric liquid crystal layer receives the non-polarized light emitted from the non-polarized light display unit and emits circular polarized light without electric field applied to the cholesteric liquid crystal layer; a first quarter-wave plate provided on the upper substrate to convert the circular polarized light to linearly polarized light; and a polarizer provided on the first quarter-wave plate, wherein an absorption axis of the polarizer forms a predetermined angle with a fast axis of the first quarter-wave plate, such that the linearly polarized light emitted from the first quarter-wave plate then can be completely absorbed by the polarizer; and wherein the 3D display device has only one polarizer.