강유전정 액정 디스플레이의 배향을 위한 액정성 고분자

진성호; 전영재; 이종천; 김강; Sung-Ho Jin; Young-Jae Jeon; Jong-Chun Lee; Gang Kim

Korean Journal of Materials Research, Vol.10, No.5, 350-353, May, 2000

Export Citation

강유전정 액정 디스플레이의 배향을 위한 액정성 고분자

Liquid Crystalline Polymer for the Alignment of Ferroelectric Liquid Crystal Display

진성호, 전영재¹, 이종천², 김강¹

부산대학교 화학교육과
¹건국대학교 화학과
²광주과학기술원 정보통신공학과

Sung-Ho Jin, Young-Jae Jeon¹, Jong-Chun Lee², and Gang Kim¹

Dept. of Chemical Education, Pusan National University, Korea
¹Dept. of Chemistry, Konkuk University, Korea
²Dept. of Information and Communication, Kwangju Institutue of Science and Technology, Korea

초록

강유전성 액정 분자 배향을 위해 열방성 고분자 액정물질을 배향막으로 사용하고 그표면 morphology를 AFM(Atomic Forced Microscope)으로 관찰한 결과 잘 배향된 sample cell에서도 microgroove 구조가 나타나지 않았음을 관찰하였다. 잘 배향된 sample cell 23:1의 contrast ratio를 보이면서 memory 효과를 나타내었다. 또한 20V의 AC field로 안정화시키자 전형적인 stripe-shaped 무늬가 나타났다.

Thermotropic liquid crystalline polymer(LCP) has been used for the alignment of ferroelectric liquid crystal (FLC) molecules and the surface morphology of the resulting polymeric thin film has been observed by atomic forced microscope. The uniform alignment of FLC molecules on the surface of thermotropic LCP thin film was obtained even though microgroove structures were not formed. The contrast ratio of sample cell was about 23:1 including two polarizers and a good memory capability due to the bistability of FLC was obtained. After AC field stabilization at 20V, the typical stripe-shaped patterns appeared.

Keywords:Polymers;Ferroelectricity;Optical materials;Atomic force microscopy(AFM)

[References]

Meyer RB, Liebert L, Strzelecki L, Keller P, J. Phys. Lett., 36, L69 (1975)
Clark NA, Lagerwall ST, Appl. Phys. Lett., 36, 899 (1980)
Dijon J, et al., SID 1988 Digest of Technical Papers, 246 (1988)
Kobayashi S, Nakaya K, et al., SID 1988 Digest, 45 (1988)
Berreman DW, Phys. Rev Lett., 28, 1683 (1972)
Wolf U, Greubel W, Kruger H, Mol. Cryst. Liq. Cryst., 23, 187 (1977)
Seo DS, Matsuba H, Ishizaki J, Iimura Y, Kobayashi S, SID, 953 (1993)
Autoun S, Lenz RW, Jin JI, J. Polym. Sci. Polym. Chem. Ed., 19, 1901 (1981)
Murakami M, Fuji H, Mol. Cryst. Liq. Cryst., 225, 259 (1993)
Shao R, Zhuang Z, Clark N, Liquid Crystals, 4, 1079 (1993)
Vorflusev VP, Panarin YP, Pikin SA, Chigrinov VG, Liquid Crystals, 14(4), 1055 (1993)
Shao R, Zhuang Z, Clark N, Liquid Crystals., 14(4), 1079 (1993)

[1] Meyer RB, Liebert L, Strzelecki L, Keller P, J. Phys. Lett., 36, L69 (1975)

[2] Clark NA, Lagerwall ST, Appl. Phys. Lett., 36, 899 (1980)

[3] Dijon J, et al., SID 1988 Digest of Technical Papers, 246 (1988)

[4] Kobayashi S, Nakaya K, et al., SID 1988 Digest, 45 (1988)

[5] Berreman DW, Phys. Rev Lett., 28, 1683 (1972)

[6] Wolf U, Greubel W, Kruger H, Mol. Cryst. Liq. Cryst., 23, 187 (1977)

[7] Seo DS, Matsuba H, Ishizaki J, Iimura Y, Kobayashi S, SID, 953 (1993)

[8] Autoun S, Lenz RW, Jin JI, J. Polym. Sci. Polym. Chem. Ed., 19, 1901 (1981)

[9] Murakami M, Fuji H, Mol. Cryst. Liq. Cryst., 225, 259 (1993)

[10] Shao R, Zhuang Z, Clark N, Liquid Crystals, 4, 1079 (1993)

[11] Vorflusev VP, Panarin YP, Pikin SA, Chigrinov VG, Liquid Crystals, 14(4), 1055 (1993)

[12] Shao R, Zhuang Z, Clark N, Liquid Crystals., 14(4), 1079 (1993)