OSA's Digital Library

Journal of Display Technology

Journal of Display Technology


  • Vol. 4, Iss. 1 — Mar. 1, 2008
  • pp: 13–17

Simultaneous Determination of Large Pretilt Angles and Cell Gap in Liquid Crystal Displays

Y. W. Li, Jacob Y. L. Ho, Fion S. Y. Yeung, and H. S. Kwok

Journal of Display Technology, Vol. 4, Issue 1, pp. 13-17 (2008)

View Full Text Article

Acrobat PDF (452 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


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

Y. W. Li, Jacob Y. L. Ho, Fion S. Y. Yeung, and H. S. Kwok, "Simultaneous Determination of Large Pretilt Angles and Cell Gap in Liquid Crystal Displays," J. Display Technol. 4, 13-17 (2008)

Sort:  Year  |  Journal  |  Reset


  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).

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited