OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 34 — Dec. 1, 2009
  • pp: 6558–6566

Feasibility study on twisted nematic liquid-crystal cell with two cross-embedded wire-grid polarizers as alignment and electrode for projection displays

Chin-Yu Chen and Yu-Lung Lo  »View Author Affiliations


Applied Optics, Vol. 48, Issue 34, pp. 6558-6566 (2009)
http://dx.doi.org/10.1364/AO.48.006558


View Full Text Article

Enhanced HTML    Acrobat PDF (887 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

For this study, twisted nematic liquid crystals (TN-LCs) are sandwiched between two cross-embedded wire-grid polarizers (WGPs) as alignment and electrodes for projection displays. In the proposed device, the WGPs replace not only the sheet polarizers in a conventional TN-LC cell, but also the front and rear alignment layers and transparent electrodes. It is found that the structure of a WGP microgroove is suitable for alignment; however, the proposed TN-LC cell exhibits a multidomain phenomenon because there is no apparent pretilt angle on the two WGPs. The multidomain phenonenon can be solved by the annealing method and by blending chiral material with the TN-LC for twisting the LC in the same direction. In addition, the surface resistance of the aluminum WGP is two orders lower than the indium- tin-oxide glass substrates, so that it is suitable for electric conductivity and for use as a transparent electrode. Also, metallic WGPs exhibit a higher heat resistance characteristic than plastic sheet polarizers, making them robust. As a result, the threshold voltages, the saturation voltages, and the response time of the proposed TN-LC cell are almost identical to the conventional TN-LC cell. The contrast ratio of the LCD projector with the proposed TN-LC cell and the quarter-wave plate exhibit the best characteristics in comparisons with the other LCD projectors. Thus, the proposed TN-LC cell represents a simple and feasible solution for the next generation of high-brightness projection display devices.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.3720) Optical devices : Liquid-crystal devices
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

History
Original Manuscript: June 12, 2009
Revised Manuscript: October 7, 2009
Manuscript Accepted: October 16, 2009
Published: November 20, 2009

Citation
Chin-Yu Chen and Yu-Lung Lo, "Feasibility study on twisted nematic liquid-crystal cell with two cross-embedded wire-grid polarizers as alignment and electrode for projection displays," Appl. Opt. 48, 6558-6566 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-34-6558

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited