--- Forwarded Message from "Dente, Ed" <[log in to unmask]> --- >From: "Dente, Ed" <[log in to unmask]> >To: "[log in to unmask]" <[log in to unmask]> >Subject: DLP vs LCD >Date: Mon, 23 Jun 2003 08:54:07 -0400 Hi All, Recently I read an article discussing the long-term stability of DLP chips versus LCD chips in projectors. It indicated that DLP technology was much more stable over time and extended use. I can't recall the source of the info - it may have been in <<T.H.E. Journal>>. Does anyone have comments on this? Thanks, Ed ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Edmund N. Dente Director, Language Media Center Ph: 617-627-3036 Tufts University [log in to unmask] Medford, MA 02155 http://ase.tufts.edu/lmc "Always trust your first instinct - unless it tells you to use your life savings to develop a Destructo Ray." -Homer Simpson Hi All, Sorry. I answered my own question. A search at the T.H.E. Journal got me the info I was looking for. But it is of interest. Keeping in mind that it was written by the DLP Product Manager at TI, which certainly colors it, it notes that: [A] recent study conducted by the Munsell Color Science Laboratory at the Rochester Institute of Technology - commissioned by Texas Instruments (TI) - revealed that projectors featuring DLP (digital light processing) technology deliver out-of-the-box image quality for many thousands of hours. By contrast, the picture quality delivered by projectors using LCD technology degrades both measurably and visibly - so much so that the projector is rendered virtually unusable over time. TI's scientists have concluded that this degradation is caused by long-term exposure of the organic materials used in LCD technology to blue and ultraviolet light. I know it's hard to measure image degradation by sight when there's only one projector in the room you're using, but has anyone else noticed this LCD degradation over time? We have a number of heavy use facilities, and for projectors in the 2 - 3K ANSI lumens range I've been a DLP fan anyway. This could clinch it for me. BTW, Sony's new SXRD chip may change things entirely. Has anyone else seen the announcement about it? It claims: " 'SXRD', a display device capable of generating high resolution, high contrast images of film quality smoothness for upcoming use in both front-projectors and rear-projection TVs Tokyo, Japan - Sony Corporation today announced the development of SXRD (Silicon X-tal*1 Reflective Display), a liquid crystal display device for use in projectors, which achieves a panel contrast of over 3000:1 with high resolution of Full HDTV(1920Hx1080V)jusing a silicon backplane. In comparison to high temperature Poly-Silicon liquid crystal devices, this represents a 2.4- fold increase in pixel density, and a 10-fold improvement in inter-pixel spacing. " (end of spec quotation). This may send TI back to the drawing board, as far as I can tell. Ed ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Edmund N. Dente Director, Language Media Center Ph: 617-627-3036 Tufts University [log in to unmask] Medford, MA 02155 http://ase.tufts.edu/lmc "Hanno ammazzato compare Turiddu!"