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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 5 — Mar. 1, 2010
  • pp: 4601–4608

Extraordinarily wide-view and wide spectral bandwidth transflective liquid-crystal displays

Chi-Huang Lin, Ru-Hsien Chiang, Ming-Li He, and Chia-Wei Chen  »View Author Affiliations


Optics Express, Vol. 18, Issue 5, pp. 4601-4608 (2010)
http://dx.doi.org/10.1364/OE.18.004601


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Abstract

This work presents a simple compensation method for widening the viewing angle of transflective liquid-crystal displays (TR-LCDs). For an off-axis light, the slow axis of a biaxial film shifts linearly as the Nz factor is varied. By using this optical characteristic of a biaxial film, the broadband condition of broadband circular polarizers exactly holds over a full 80° viewing cone, thus eliminating the off-axis light leakage to widen the viewing angle of TR-LCDs. Based on the proposed compensation method, the TR-LCDs theoretically have a wide spectral bandwidth and a viewing angle of 80° for contrast-ratio (CR) >100:1 and >30:1 in transmissive and reflective modes, respectively. Experiments also show that the proposed TR-LCD has a viewing angle of over the entire 80° and 65° viewing cone in T-mode and R-mode, respectively, for CR>10:1. The proposed TR-LCD is highly promising for mobile display applications.

© 2010 OSA

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(260.5430) Physical optics : Polarization

ToC Category:
Optical Devices

History
Original Manuscript: November 19, 2009
Revised Manuscript: January 20, 2010
Manuscript Accepted: February 5, 2010
Published: February 22, 2010

Citation
Chi-Huang Lin, Ru-Hsien Chiang, Ming-Li He, and Chia-Wei Chen, "Extraordinarily wide-view and wide spectral bandwidth transflective liquid-crystal displays," Opt. Express 18, 4601-4608 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-5-4601


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References

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