Abstract

A method for the measurement of arbitrary pretilt angles in liquid crystal displays is proposed and demonstrated. The cell gap can also be determined accurately in the same experiment as well. This method makes use of a photo-elastic modulator and is capable of measuring pretilt angles from 0$^{\circ}$ to 90$^{\circ}$ precisely.

© 2007 IEEE

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  1. F. S. Y. Yeung, J. Y. Ho, Y. W. Li, F.-C. Xie, O. Tsui, P. Sheng, H.-S. Kwok, "Variable liquid crystal pretilt angles by nano-structured surfaces," Appl. Phys. Lett. 88, 051910-051912 (2006).
  2. F. S. Y. Yeung, Y. W. Li, H. S. Kwok, "Pi-cell liquid crystal displays at arbitrary pretilt angles," Appl. Phys. Lett. 88, 041108-041110 (2006).
  3. F. S. Y. Yeung, H. S. Kwok, "Fast-response no-bias-bend liquid crystal displays using nano-structured surfaces," Appl. Phys. Lett. 88, 063305-063307 (2006).
  4. Y. Satoh, H. Mazaki, E. Yoda, T. Kaminade, T. Toyooka, Y. Kobori, "Comparison of nematic hybrid and discotic hybrid films as viewing angle compensator for NW-TN-LCDs," SID Int. Symp. Dig. Tech. Papers. (2000) pp. 348-351.
  5. H.-S. Kwok, F. S. Y. Yeung, Y. W. Li, "Bistable LCDs based on a new alignment technology," SID Int. Symp. Dig. Tech. Papers (2006) pp. 1622-1625.
  6. F. S.-Y. Yeung, Y.-W. Li, H.-S. Kwok, "Dual-frequency bistable bend-splay LCDs," SID Int. Symp. Dig. Tech. Papers (2005) pp. 1770-1773.
  7. M. P. Cuminal, M. Brunet, "A technique for measurement of pretilt angles arising from alignment layers," Liq. Crys. 22, 185-192 (1997).
  8. J. S. Gwag, S. H. Lee, K. H. Park, W. S. Park, K. Y. Han, C. G. Jhun, T. H. Yoon, J. C. Kim, D. M. Song, D. M. Shin, "Simple method for measuring the high pretilt angle of nematic liquid crystals," J. Appl. Phys. 93, 4936-4938 (2003).
  9. P. W. Rhodes, D. L. Shealy, "Refractive optical systems for irradiance redistribution of collimated radiation: Their design and analysis," Appl. Opt. 19, 3545-3553 (1980).
  10. P. Yeh, "Extended Jones matrix method," J. Opt. Soc. Amer. 72, 507-513 (1982).
  11. A. Lien, "Extended Jones matrix representation for the twisted nematic l iquid-crystal display at oblique incidence," Appl. Phys. Lett. 57, 2767-2769 (1990).
  12. F. H. Yu, H. S. Kwok, "Comparison of extended Jones matrices for twisted nematic liquid crystal displays at oblique angles of incidence," J. Opt. Soc. Amer. A 16, 2772-2780 (1999).
  13. E. Hecht, Optics (Addison-Wesley, 2002).
  14. T. C. Oakberg, "Measurement of wave-plate retardation using a photoelastic modulator," Proc. SPIE 3121, 19-22 (1997).
  15. Y. L. Lo, P. F. Hsu, "Birefringence measurements by an electro-optic modulator using a new heterodyne scheme," Opt. Eng. 41, 2764-2767 (2002).
  16. S. Nakadate, "High precision retardation measurement using phase detection of Young's fringes," Appl. Opt. 29, 242-246 (1990).

2006 (3)

F. S. Y. Yeung, J. Y. Ho, Y. W. Li, F.-C. Xie, O. Tsui, P. Sheng, H.-S. Kwok, "Variable liquid crystal pretilt angles by nano-structured surfaces," Appl. Phys. Lett. 88, 051910-051912 (2006).

F. S. Y. Yeung, Y. W. Li, H. S. Kwok, "Pi-cell liquid crystal displays at arbitrary pretilt angles," Appl. Phys. Lett. 88, 041108-041110 (2006).

F. S. Y. Yeung, H. S. Kwok, "Fast-response no-bias-bend liquid crystal displays using nano-structured surfaces," Appl. Phys. Lett. 88, 063305-063307 (2006).

2003 (1)

J. S. Gwag, S. H. Lee, K. H. Park, W. S. Park, K. Y. Han, C. G. Jhun, T. H. Yoon, J. C. Kim, D. M. Song, D. M. Shin, "Simple method for measuring the high pretilt angle of nematic liquid crystals," J. Appl. Phys. 93, 4936-4938 (2003).

2002 (1)

Y. L. Lo, P. F. Hsu, "Birefringence measurements by an electro-optic modulator using a new heterodyne scheme," Opt. Eng. 41, 2764-2767 (2002).

1999 (1)

F. H. Yu, H. S. Kwok, "Comparison of extended Jones matrices for twisted nematic liquid crystal displays at oblique angles of incidence," J. Opt. Soc. Amer. A 16, 2772-2780 (1999).

1997 (2)

T. C. Oakberg, "Measurement of wave-plate retardation using a photoelastic modulator," Proc. SPIE 3121, 19-22 (1997).

M. P. Cuminal, M. Brunet, "A technique for measurement of pretilt angles arising from alignment layers," Liq. Crys. 22, 185-192 (1997).

1990 (2)

A. Lien, "Extended Jones matrix representation for the twisted nematic l iquid-crystal display at oblique incidence," Appl. Phys. Lett. 57, 2767-2769 (1990).

S. Nakadate, "High precision retardation measurement using phase detection of Young's fringes," Appl. Opt. 29, 242-246 (1990).

1982 (1)

P. Yeh, "Extended Jones matrix method," J. Opt. Soc. Amer. 72, 507-513 (1982).

1980 (1)

P. W. Rhodes, D. L. Shealy, "Refractive optical systems for irradiance redistribution of collimated radiation: Their design and analysis," Appl. Opt. 19, 3545-3553 (1980).

Appl. Opt. (1)

P. W. Rhodes, D. L. Shealy, "Refractive optical systems for irradiance redistribution of collimated radiation: Their design and analysis," Appl. Opt. 19, 3545-3553 (1980).

Appl. Phys. Lett. (2)

F. S. Y. Yeung, Y. W. Li, H. S. Kwok, "Pi-cell liquid crystal displays at arbitrary pretilt angles," Appl. Phys. Lett. 88, 041108-041110 (2006).

A. Lien, "Extended Jones matrix representation for the twisted nematic l iquid-crystal display at oblique incidence," Appl. Phys. Lett. 57, 2767-2769 (1990).

Appl. Opt. (1)

Appl. Phys. Lett. (2)

F. S. Y. Yeung, H. S. Kwok, "Fast-response no-bias-bend liquid crystal displays using nano-structured surfaces," Appl. Phys. Lett. 88, 063305-063307 (2006).

F. S. Y. Yeung, J. Y. Ho, Y. W. Li, F.-C. Xie, O. Tsui, P. Sheng, H.-S. Kwok, "Variable liquid crystal pretilt angles by nano-structured surfaces," Appl. Phys. Lett. 88, 051910-051912 (2006).

J. Opt. Soc. Amer. (1)

P. Yeh, "Extended Jones matrix method," J. Opt. Soc. Amer. 72, 507-513 (1982).

J. Appl. Phys. (1)

J. S. Gwag, S. H. Lee, K. H. Park, W. S. Park, K. Y. Han, C. G. Jhun, T. H. Yoon, J. C. Kim, D. M. Song, D. M. Shin, "Simple method for measuring the high pretilt angle of nematic liquid crystals," J. Appl. Phys. 93, 4936-4938 (2003).

J. Opt. Soc. Amer. A (1)

F. H. Yu, H. S. Kwok, "Comparison of extended Jones matrices for twisted nematic liquid crystal displays at oblique angles of incidence," J. Opt. Soc. Amer. A 16, 2772-2780 (1999).

Liq. Crys. (1)

M. P. Cuminal, M. Brunet, "A technique for measurement of pretilt angles arising from alignment layers," Liq. Crys. 22, 185-192 (1997).

Opt. Eng. (1)

Y. L. Lo, P. F. Hsu, "Birefringence measurements by an electro-optic modulator using a new heterodyne scheme," Opt. Eng. 41, 2764-2767 (2002).

Proc. SPIE (1)

T. C. Oakberg, "Measurement of wave-plate retardation using a photoelastic modulator," Proc. SPIE 3121, 19-22 (1997).

Other (4)

E. Hecht, Optics (Addison-Wesley, 2002).

Y. Satoh, H. Mazaki, E. Yoda, T. Kaminade, T. Toyooka, Y. Kobori, "Comparison of nematic hybrid and discotic hybrid films as viewing angle compensator for NW-TN-LCDs," SID Int. Symp. Dig. Tech. Papers. (2000) pp. 348-351.

H.-S. Kwok, F. S. Y. Yeung, Y. W. Li, "Bistable LCDs based on a new alignment technology," SID Int. Symp. Dig. Tech. Papers (2006) pp. 1622-1625.

F. S.-Y. Yeung, Y.-W. Li, H.-S. Kwok, "Dual-frequency bistable bend-splay LCDs," SID Int. Symp. Dig. Tech. Papers (2005) pp. 1770-1773.

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