Shmuel Roth

4.5: Multi-primary LCD for TV Applications

Multi-primary technology is applied to get wide gamut high efficiency LCD panels, suitable for high quality TV applications. In this paper, we describe four and five primary displays using CCFL backlights, with color gamut between 92% NTSC and 110% NTSC. We will present trade-off analysis, experimental results and comparison to other gamut enhancement technologies.

64.3: A Single Panel LCOS Engine with a Rotating Drum and a Wide Color Gamut

A single panel LCoS projector with a wide color gamut and a rotating multi-primary drum intended for RPTV HDTV systems was developed by Philips and Genoa Color Technologies prior to termination of all LCoS development. Design of the drum engine and design trade-offs will be discussed. Measured colorimetry data from a preproduction system will be presented. This system was designed around a single 0.87″ diagonal 1280 × 720 pixel panel, which will also be described. While all work at Philips has ceased on LCoS engines and imagers, the system provides a promising approach for future multi-primary wide color gamut systems.

21.3: New Metric for Display Color Gamut Evaluation

We suggest a metric for evaluating color gamut of displays based on summing the probability of using a certain part of the display color gamut multiplied by an impact parameter for that color region. We further present methods for evaluating the probability of use, and the impact of color.