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光配向技术030814.pdf

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1、http:/.tw 92 7 199 153 * * * * * * TFT LCD (LCD-TV) TFT LCD (Non-rubbing) 4 TFT LCD (Rubbing) 5 (Non-rubbing) 5 6 TFT LCD (LCD-TV) (Photo-alignment) (Photo-alignment) (Non-rubbing) (LCD) (Wide Viewing Angle) 154 199 92 7 http:/.tw (Rubbing) (ppm) ITO (Polyimide) (1) LCD LCD (Dust) (Static Charge) (R

2、ubbing Defect) (Multi-domain) (Pixel) 10 (Non-rubbing) LC Molecules Rubbing Long Arkyl Chain Pretilt Angle PI Main Chain (a)2-domain (b)4- domain (a) (b) (a)TN (b)Multi-domain V A D-2 D-1 (a) (b)http:/.tw 92 7 199 155 1991 W. M. Gibbons (2) Nature 1992 M. Schadt (3) 1994 IBM UV Polyimide (4) 1995 4

3、(Four Domain-divided) (5) (Command Surface) Azobenzene (6) JSR M. Kimura 2000 Tg 155C LC (Anchoring Energy) (UV) (Photo-induced Cross-linking) (Photo-induced Decomposition) (Photo-inducedisomerization) 1. (Photo-induced Cross-linking) (2+2) Photo-dimerization (7) (Cinnamate) 2. (Photo-induced Isomer

4、ization) (Trans-cis Transition) O OO O O O O O O Polarized UV O O h O n n Poly(Vinyl 4-methoxycinnamate) PVMC (8) 156 199 92 7 http:/.tw (Azobenzene) 3. (Photo-induced Decomposition) (10) 0 90 (Charge-trapping Center) (Flicker) (Image-sticking) (Anisotropic) (Van der Waals Force) (Polarized UV) (Non

5、-po- larized UV) 1. (Polarizer) Poly (4-cyano-4-methacryloyloxyazobenzene) (9) O O N NC N C C CH 2 H 3 C (Polyimide) (11) OO OO O X CF 3 1-X OC HN O N N N N OOhttp:/.tw 92 7 199 157 (Multi-domain Alignment) 1. 102,1999 2. W. M. Gibbons, P. J. Shannon, S. T. Sun and B. J. Swetlin, Nature, 351, 49, 19

6、91. 3. M. Schadt, K. Schmitt, V. Kozinkov and V. Chigrinov, Jpn. J. Appl. Phys., 31, 2155, 1992. 4. M. Hasegawa, Y. Taria, Proceeding of IDRC94, 78, 1994. 5. T. Sugiyama, S. Kobayashi et al., Jpn. J. Appl, Phys., 34, 2396, 1995. 6. , 32, 671, 1994 7. P. L. Egerton, E. Pitts and A. Reister, Macromole

7、c., 14, 95, 1981. 8. M. Schadt, K. Schmitt, V. Kozinkov and V. Chigrinov, Jpn. J. Appl. Phys., 31, 2155, 1992. 9. M. Kidowaki, T. Fujiwara and K. Ichimura, Chem. Lett., 641, 1999. 10. Y. Wang, S. Xu, A. Kanazawa, T. Shiono, T. Ikeda, and Y. Matsuki and U. Takeuchi, Liq. Cryst., 28, 473, 2001. 11. M.

8、 Nishikawa and J. L. West, Jpn. J. Appl. Phys. Part 1., 38, 5183, 1999. 12. T. Yamamoto, M. Hasegawa, H. Hatoh, SID 96 Digest, 642, 1996. 13. H. Yoshida and Y. Koike, Jpn. J. Appl. Phys. Part 2., 36, L428, 1997. 14. N. Kawatsuki, H. Takatsuka, and T. Yamamoto, Jpn. J. Appl. Phys., part 2, 39, L230, 2000. UV Polarizer Laterally Oscillating Light Perpendicularly Oscillating Light Axis of Optical Absorption Axis of Optical Transmission (Axis of Optical Polarization) Polymer Film (12) UV Light PI Surface Ap As=As Ap=Apcos As (b) Top View PI Surface (a) Side View 2. (13, 14)

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