半"V"字形铁电液晶器件中使用N* -SmC*相序的铁电液晶材料,获得此种器件单畴排列的常用方法是在N*-SmC*相变过程中施加直流电压,但是这种方法引入了损害器件性能的剩余电荷.通过研究在相变过程中施加各种非直流电压对液晶排列织构的影响,发现直流电压不是得到N*-SmC*相序的铁电液晶均一排列的必要条件,通过选择双极性电压为V1=7V/μm,V2=3 V/μm,一个脉冲周期20 ms内施加双极性电场时间比为D1/D2=3/7,不仅获得了电光特性曲线不存在迟滞回线的均一层排列器件,同时也解决了剩余电荷对器件的影响.
参考文献
| [1] | Clark N A,Lagerwall S T.Submicrosecond bistable electro-optic switching in liquid crystals[J].Appl.Phys.Lett.,1980,36(11):899-901. |
| [2] | 黄锡珉.无阈值铁电液晶[J].液晶与显示,2001,16(2):81-90. |
| [3] | Ricker T P,Clark N A,Smith G S,et al."Chevron"local layer structure in surface stabilized ferroelectric smectic C cells[J].Phys.Rev.Lett.,1987,59(7):2658-2661. |
| [4] | Asao Y,Togano T,Terada M,et al.Novel ferroelectric liquid crystal mode for active matrix liquid crystal display using cholesteric-chiral smetic C phase transition material[J].Jpn.J.Appl.Phys.,1999,38(10):5977-5983. |
| [5] | Nonaka T,Li J,Ogawa A,et al.Material characteristics of an matrix LCD based upon chiral smectics[J].Liq.Cryst.,1999,26(11):1599-1602. |
| [6] | Murakami Y,Furuta H,Xu J,et al.Intrinsic half-V-mode ferroelectric liquid crystal displays fabricated using hybrid alignment exhibiting high contrast ratio and reliability without DC voltage application to remove layer degeneracy and their electro-optic characteristics[J].Jpn.J.Appl.Phys.,2003,42(5A):2759-2761. |
| [7] | Patel J S,Goodby J W.Alignment of liquid crystals which exhibit eholesteric to smectic C* phase transitions[J].J.Appl.Phys.,1986,59(7):2355-2360. |
| [8] | Hatano T,Yamamoto K,Takezoe H,et al.Alignment controls and switching characteristics in a ferroelectric liquid crystal with the phase sequence of N* -SmC*[刀.Jpn.J.Appl.Phys.,1986,25(12):1762-1767. |
| [9] | 乌日娜,彭增辉,鲁兴海,等.N*-Sc*相变铁电液晶的排列[J].液晶与显示,2004,19(6):427-430. |
| [10] | Pozhidaev E,Chigrinov V,Huang D,et al.Photoalignment of ferroelectric liquid crystals by azodye layers[J].Jpn.J.Appl.Phys.,2004,43(8A):5440-5446. |
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