--- 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!"
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