Mr. Bartley David Millikan Profile

Bartley David Millikan

at Three-Five Systems

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Proceedings Article | 13 November 2001 Paper

Digital projection systems based on LCOS

Bartley Millikan, Jason Wellman

Proceedings Volume 4458, (2001) https://doi.org/10.1117/12.448252

KEYWORDS: Liquid crystal on silicon, Video, Projection systems, Video processing, Reflectivity, Analog electronics, LCDs, Electronics, Optical resolution, Image quality standards

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An example high resolution three panel digital projection system utilizing Liquid Crystal On Silicon (LCOS) is discussed. Based on Three-Five's 1920x1200 Brillian LCOS panels the system yields full white/full black contrast of greater than 450:1, greater than 65% reflectivity at f/2.8. This paper will discuss LCOS properties and the considerations of implementation. Numerous advances have taken place in the reflective LCD domain over the past few years enabling tangible quality products. But more development is needed to further increase the quality and decrease the price. LCOS panels utilize semiconductor manufacturing methods and for example traditional twisted nematic fluids or hometropic materials. Reflective displays permit the drive electronics to be behind the pixels enabling the aperture ratios to be extremely high. The advantages are extremely high pixel counts at a relatively low cost. This technology enables products with a vast supply of resolution for the display of photo-realistic digital images.

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