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Proceedings Paper

Simulating multiprimary LCDs on standard tri-stimulus LC displays
Author(s): Fritz Lebowsky; Katrin Vonneilich; Thomas Bonse
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Paper Abstract

Large-scale, direct view TV screens, in particular those based on liquid crystal technology, are beginning to use subpixel structures with more than three subpixels to implement a multi-primary display with up to six primaries. Since their input color space is likely to remain tri-stimulus RGB we first focus on some fundamental constraints. Among them, we elaborate simplified gamut mapping architectures as well as color filter geometry, transparency, and chromaticity coordinates in color space. Based on a 'display centric' RGB color space tetrahedrization combined with linear interpolation we describe a simulation framework which enables optimization for up to 7 primaries. We evaluated the performance through mapping the multi-primary design back onto a RGB LC display gamut without building a prototype multi-primary display. As long as we kept the RGB equivalent output signal within the display gamut we could analyze all desirable multi-primary configurations with regard to colorimetric variance and visually perceived quality. Not only does our simulation tool enable us to verify a novel concept it also demonstrates how carefully one needs to design a multiprimary display for LCD TV applications.

Paper Details

Date Published: 28 January 2008
PDF: 12 pages
Proc. SPIE 6807, Color Imaging XIII: Processing, Hardcopy, and Applications, 680708 (28 January 2008); doi: 10.1117/12.766244
Show Author Affiliations
Fritz Lebowsky, STMicroelectronics SA (France)
Katrin Vonneilich, Univ. of Applied Sciences Düsseldorf (Germany)
Thomas Bonse, Univ. of Applied Sciences Düsseldorf (Germany)

Published in SPIE Proceedings Vol. 6807:
Color Imaging XIII: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Shoji Tominaga, Editor(s)

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