DIRECT-CURRENT SCREENING EFFECT ON DIP OCCURRENCE IN NEMATIC ELECTROOPTICAL MODULATION

被引：9

作者：

SUGIMURA, A

机构：

[1] Department of Information Systems Engineering, Faculty of Engineering, Osaka Sangyo University, Nakagaito, Daito

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 70卷 / 10期

关键词：

D O I：

10.1063/1.350216

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The screening effect of dc voltage in a nematic liquid-crystal cell having polyimide alignment layers is studied experimentally and theoretically. The transmitted intensity of light passing through a liquid-crystal sample exhibits a dip arising from dc screening effects, which are never observed with ac voltage application. The dc screening effect is produced by two kinds of ionic charges in the boundary layer. One is adsorbed on the orientation film and the other compensates the adsorbed charges. The two kinds of charge model account quantitatively for the observed dip in transmission making its origin clear, and explain well the ionic conduction processes accompanying the application of dc voltage to a liquid-crystal sample.

引用

页码：5355 / 5361

页数：7

共 21 条

[1] CRUCIAL INFLUENCE OF THE TWIST DEFORMATION ON DEGENERATE 4-WAVE MIXING PROCESS IN HOMEOTROPICALLY ALIGNED NEMATIC LIQUID-CRYSTALS
CHEN, SH
KUO, CL
[J]. APPLIED PHYSICS LETTERS, 1989, 55 (18) : 1820 - 1822
[2] GROSSMAN B, 1979, ACTA PHYS POL A, V56, P567
[3] APPLICATION OF INFRARED ATR SPECTROSCOPY TO LIQUID-CRYSTALS .5. ORIENTATION OF 5CB MOLECULES IN THE BOUNDARY REGION OF A TWISTED NEMATIC CELL AND REORIENTATION BY A DC ELECTRIC-FIELD
HATTA, A
[J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1981, 74 (1-4): : 195 - 207
[4] THE EFFECT OF RUBBED POLYMER-FILMS ON THE LIQUID-CRYSTAL ALIGNMENT
ISHIHARA, S
WAKEMOTO, H
NAKAZIMA, K
MATSUO, Y
[J]. LIQUID CRYSTALS, 1989, 4 (06) : 669 - 675
[5] PHOTOVOLTAIC EFFECT IN NEMATIC LIQUID-CRYSTAL
KAMEI, H
OZAWA, T
KATAYAMA, Y
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS, 1972, 11 (09) : 1385 - &
[6] KHOO IC, 1985, IEEE J QUANTUM ELECT, V21, P329, DOI 10.1109/JQE.1985.1072667
[7] TIME RESPONSE OF A NEMATIC LIQUID-CRYSTAL CELL IN A SWITCHED DC ELECTRIC-FIELD
MADA, H
OSAJIMA, K
[J]. JOURNAL OF APPLIED PHYSICS, 1986, 60 (09) : 3111 - 3113
[8] A FERROELECTRIC LAYER IN A CELL CONTAINING A POLAR MOLECULAR MIXTURE IN NEMATIC AND ISOTROPIC PHASES
MOCHIZUKI, A
MOTOYOSHI, K
KOBAYASHI, S
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (10): : L1898 - L1900
[9] DC CONDUCTION MECHANISMS IN THIN POLYIMIDE FILMS
NEVIN, JH
SUMME, GL
[J]. MICROELECTRONICS AND RELIABILITY, 1981, 21 (05): : 699 - 705
[10] SESSLLER GM, 1982, ELECTRONIC PROPERTIE, P79

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