| Abstract: | Abstract— The electro‐optical characteristics of a 90° twisted‐nematic liquid‐crystal display (TN‐LCD) were analyzed. The test cell was composed of a minute amount of dopant, multiwalled carbon nanotubes, and a standard nematic mixture, E7, used in TN‐LCDs with direct addressing. Under the experimental conditions, no hystereses in optical transmittance were observed in either the doped cell or a neat counterpart under an applied ac voltage. Experimental results show that doping with nanotubes rectifies the electro‐optical properties of the cells by reducing the driving voltage as well as the rise time. Similar results were found in a TN cell of a TFT‐grade liquid crystal instead of the mixture consisting completely of polar compounds. |
