Re: which colour LCD C-STN/TFT/TFD?


John Devereux <jdREMOVE@xxxxxxxxxxxxxxxxxx> writes:
50k hours is equivalent to most industrial CCFL LCD backlights -
although you can change those!

Well, you can change an OLED too, I suppose.

I think one of the OLED application notes I saw gave a lifetime
*assuming a certain percentage* "on" time - so you have to be careful
to read the small print.

IIRC mine spec'd 100% on, 100% duty cycle. So my app is careful to
use the minimum lumens required for the task, since the display *will*
be on 100% of the time.

Plus, the app note suggested moving the image around over time, to
even out the wear and avoid burn-in.

It does seem like they are still very much niche products. Still much
more expensive than LCD when I last looked (a few months ago).

Yeah, too bad. I have a niche requirement that they fit just
perfectly. Good thing I only need a few :-)

I quite like VFD - the last time I had one was ~25 years ago in one of
the early pocket calculators. Much nicer than the later LED and LCD
displays. Funny they still have a role to play, considering the
revolution in display technology since then.

Noritake has a line of VFDs that are drop-in replacements for standard
LCD panels, now. www.noritake-elec.com

So perhaps it's just that the demand *in general* is so high, that
niche products become profitable?
.

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