| 摘要 |
The invention pertains to a single-polarizer, normally white reflective display comprising an STN-LCD cell, a reflector, one polarizer, and a twisted retardation layer, characterized in that the sing of the twist angle of the STN-LCD cell (TSTN) is opposite to the twist angle of the twisted retardation layer (TRL) and that ¦ TSTN - TRL ¦ is between 90 DEG and 160 DEG , and ¦ RSTN RRL ¦ is 10 - 700 nm, wherein RSTN - RRL stand for the retardation values of the STN-LCD cell and the retardation layer, respectively, and that the difference between the dispersion of the retardation layer and the STN-LCD cell is more than 5 %, wherein the dispersion is defined as the ratio of the retardation value at lambda =436 nm to the retardation value at lambda =668 nm. |
