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Posted by Bob Myers on 11/11/07 01:02
"Rita Berkowitz" <ritaberk2O04 @aol.com> wrote in message
news:13jcab1b8u3s222@news.supernews.com...
> It's amazing how Bob's claim went from this filter "doesn't exist" to "The
> slight tint to the thin film layer is incidental to its function, and has
> no
> significant impact on the color characteristics of the completed module"
> when presented with the evidence. We call this "waffling" in these parts.
The above is probably among the funniest writing I've
seen in years. Anyone actually bothering to read this thread
will recall that I said right from the start that the backlight
assembly included various films and optical layers, and noted
their functions. That's a long way, though, from picking out one
of those layers and incorrectly guessing it to be a "color
correction filter."
> And another inaccuracy Bob mentions is "the clear film and the top
> "silver/pearl" layer are there for brightness enhancement." There was no
> "clear film" on top or in the backlight assembly; there was a blue/green
> filter.
Funny, the "clear" description was actually yours; you may remember
that you wrote that one of the layers was:
"5) Blue/Green clear filter. I'm guessing some type of color correction
filter."
So now you complain that I use your own word? I'm at least
trying to keep this on a level that you'll be able to follow. Guess
your memory doesn't work all that well (at least when it's
convenient for it to fail). You did get one thing correct in the above,
though - you were quite clearly "guessing."
> If the backlight panel didn't need color correction there would be
> an optically clear and color neutral layer or no layer at all.
> Introducing
> color in the light path indicates a need for color correction, there's no
> disputing this fact.
That would certainly be one way to guess, if you didn't know
any better. Another might be that the color of the layer did
not contribute significantly to the color characteristics of the module,
and was simply the native color of the material used. If you think
it's for "color correction," then you also should be able to say just
exactly why the backlight should need this "correction," and what
its benefits are - and why someone would take the efficiency and
cost hit here when there are going to be other color filters in the panel,
as I originally described.
Bob M.
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