碳纳米管对扭曲向列相液晶显示模式电-光性能的影响

Effects of carbon nanotubes on the electro-optical properties of the twisted nematic liquid crystal display mode

摘要: 选用单壁及多壁碳纳米管掺杂在液晶中制备了扭曲向列相液晶显示模式液晶盒,采用液晶综合参数测试仪研究了单壁及多壁碳纳米管对扭曲向列相液晶显示模式液晶盒的驱动电压、对比度及响应时间的影响.结果表明:单壁及多壁碳纳米管的加入均能显著降低扭曲向列相液晶显示模式液晶盒的驱动电压,但对比度也有较大幅度的降低.掺杂单壁碳纳米管的液晶盒的开态及关态响应时间均有一定程度的增加,而掺杂多壁碳纳米管的液晶盒关态响应时间基本上有所降低,开态响应时间没有明显的变化规律.

Abstract: Twisted nematic (TN) liquid crystal display mode cells doped with single-walled carbon nanotubes (SWNT) and multiwalled carbon nanotubes (MWNT) were prepared. The effects of SWNT and MWNT on the driving voltage, contrast ratio and response time of TN liquid crystal display mode cells were investigated with a liquid crystal display parameters tester. It was found that the addition of SWNT and MWNT remarkably decreased the driving voltage and decreased the contrast ratio significantly. The fieldon response time (t_on) and field-off response time (t_off) of TN liquid crystal display mode cells doped with SWNT were higher than those of pure TN liquid crystal display mode cells. For TN liquid crystal display mode cells doped with MWNT, t_off was reduced, but the variation of t_on had no obvious rules.