Polarized back- and frontlights for LCDs

Chris M. Van Heesch; H. Jagt; Hugo J. Cornelissen; Dirk J. Broer; Cees W. M. Bastiaansen

doi:10.1117/12.549463

28 May 2004 Polarized back- and frontlights for LCDs

Chris M. Van Heesch, H. Jagt, Hugo J. Cornelissen, Dirk J. Broer, Cees W. M. Bastiaansen

Proceedings Volume 5289, Liquid Crystal Materials, Devices, and Applications X and Projection Displays X; (2004) https://doi.org/10.1117/12.549463
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

New designs are presented of backlight systems for transmissive and transflective LCD’s based on stretched PET films with a well-defined micro-structure, which emit highly collimated or diffuse and linearly polarized light with a high efficiency. Moreover, edge-lit waveguide systems are discussed equipped slanted phase gratings which combine a range of desirable features such as a high transparency in direct view, a direct emission of light at normal angles to the plane of the waveguide and a purely unidirectional out-coupling of light towards the LCD-side. Moreover, these illumination systems emit colored, linearly polarized light which should contribute significantly to the energy efficiency of transmissive, transflective and reflective LCD displays.

Citation Download Citation

Chris M. Van Heesch, H. Jagt, Hugo J. Cornelissen, Dirk J. Broer, and Cees W. M. Bastiaansen "Polarized back- and frontlights for LCDs", Proc. SPIE 5289, Liquid Crystal Materials, Devices, and Applications X and Projection Displays X, (28 May 2004); https://doi.org/10.1117/12.549463

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