弱锚定条件下平行排列向列液晶盒的一级转变  

The First Order Transition for a Weak Anchoring and Parallel Alignment NLC Cells

作　　者：关荣华[1] 杨国琛[1] 

机构地区：[1]河北工业大学材料学院

出　　处：《液晶与显示》2003年第3期183-187,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：河北省自然科学基金资助项目(197014)

摘　　要：在液晶总自由能中界面锚定能采用修正后的Rapini Papoular(RP)公式,用严格的数学推导和计算,详细研究了弱锚定条件下平行排列的向列液晶盒在阈值点的弗雷德里克兹(Freedericksz)转变问题。结果表明,对所研究的液晶盒在一定条件下阈值点的转变可以是一级转变。同时给出了一级转变条件,它与液晶表面参量有关。Modified RP formula of surface anchoring energy is adopted in total free energy of liquid crystal cell. Freedericksz transition at threshold point of a weak anchoring and parallel alignment NLC cells has been studied carefully by a rigid mathematical deduction and calculation. The results show that at threshold point the first order transition may occur. The condition of the first order transition is also discussed. It is connected with surface parameters of liquid crystal.

关 键 词：弱锚定 平行排列向列 液晶盒 阈值点 一级转变 液晶显示器件 

分 类 号：O753.2[理学—晶体学] TN141.9[电子电信—物理电子学]