I'm looking for a new monitor to back my electric whiteboard.
I've been using a plasma monitor (40" TV) up until now as it
has a hard front surface that can stand up to being "written on"
(with an invisible ink marker pen).
[Imagine your actions when writing on a "whiteboard"]
Most LCD (TVs) seem to have a really flimsy front surface.
I suspect the plasma's front screen is a (necessary) consequence
of the technology. And, not essential for LCD.
Are there any offerings where this might NOT be the case?
I'm looking for a new monitor to back my electric whiteboard.
I've been using a plasma monitor (40" TV) up until now as it
has a hard front surface that can stand up to being "written on"
(with an invisible ink marker pen).
[Imagine your actions when writing on a "whiteboard"]
Most LCD (TVs) seem to have a really flimsy front surface.
I suspect the plasma's front screen is a (necessary) consequence
of the technology. And, not essential for LCD.
Are there any offerings where this might NOT be the case?
Are there any offerings where this might NOT be the case?
It sounds like you want to put a glass screen protector on the front
of a regular monitor (the front of a regular LCD monitor is the plastic polariser)
The largest glass screen protector I've seen was for a 10" tablet, but they may make them in larger sizes.
On 6/12/2024 2:22 AM, Jasen Betts wrote:
Are there any offerings where this might NOT be the case?
It sounds like you want to put a glass screen protector on the front
of a regular monitor (the front of a regular LCD monitor is the plastic
polariser)
That might work. Glass or Lexan. It would have to stand up to the (slight) abrasion of the "invisible marker pen" (Lexan seems to scratch
even when you think you aren't using anything abrasive; glass might be problematic at that large size).
Fastening it to the monitor would be a challenge, though.
On 6/12/2024 2:22 AM, Jasen Betts wrote:
Are there any offerings where this might NOT be the case?
It sounds like you want to put a glass screen protector on the front
of a regular monitor (the front of a regular LCD monitor is the plastic
polariser)
That might work. Glass or Lexan. It would have to stand up to the
(slight) abrasion of the "invisible marker pen" (Lexan seems to scratch
even when you think you aren't using anything abrasive; glass might be problematic at that large size).
Fastening it to the monitor would be a challenge, though.
Plasma TVs seem to have a really robust front surface. I've seen such
a surface on *some* LCD "monitors" (20-24 inch range) but larger TVs
seem to not be as robust.
The largest glass screen protector I've seen was for a 10" tablet, but they >> may make them in larger sizes.
Is it like a screen protector for a *phone* -- that adheres directly to the normal screen? Or, is it mounted mechanically? (and, how "universal" would such a mount be?)
It would also have to be much thicker than the things used on phones, especially over such a long span. E.g., I've demonstrated the durability
of the current plasma TV by pounding on it with a *shoe* (while powered off) to demonstrate how hard it is to crack...
Plasma TVs seem to have a really robust front surface. I've seen such
a surface on *some* LCD "monitors" (20-24 inch range) but larger TVs
seem to not be as robust.
It would also have to be much thicker than the things used on phones,
especially over such a long span. E.g., I've demonstrated the durability
of the current plasma TV by pounding on it with a *shoe* (while powered off) >> to demonstrate how hard it is to crack...
It's supported by the ahesive and the display it's stuck to. if you
only want to protect the display from chemicals and abrasion then thin
will work.
If it was stiffer than the display glass you'd need to disassemble the display to install the protector. (if wanting to mount it using adhesive)
Or else live with a gap between the display and the protector (increasing parallax and potentially collecting debris)
The front polarizer of a typical LCD TV ("really big monitor") tends to
be flimsy. A thin piece of glass/lexan might work in that it could distribute the forces over a larger area -- providing "localized stiffness" instead of OVERALL stiffness.
Imagine yourself writing on a whiteboard; your motions tend not to be delicate and deliberate but, rather, sharp and erratic. I need to protect the LCD display from your "abuse".
At the same time, ensuring that the protective layer doesn't end up scratched and cloudy from repeated "markings".
If it was stiffer than the display glass you'd need to disassemble the
display to install the protector. (if wanting to mount it using adhesive)
Or else live with a gap between the display and the protector (increasing
parallax and potentially collecting debris)
The parallax is disturbing. Your "ink" appears *in* the display but your "writing actions" occur outside the protective layer. So, if there's a schematic, program listing, photoplot, etc. being displayed on ("in")
the display, it requires a bit more effort to make your marks where you
want them, relative to what is already being displayed (and *updated* to include your marks).
If you think of a TV weatherperson interacting with a green-screen,
you can get a sense of how that sort of awkward interface affects
the precision of their annotations (anything "exact" is done off-line
where it can be revised over time; live updates tend to be really crude,
by comparison).
If parallax is the only option, I can use an alternate technology that eliminates it -- in favor of other shortcomings. :<
[I *really* don't want to use another plasma TV as they throw off
a lot of heat so you can't ALSO use them as a practical TV (which
would eliminate the need to STORE the thing when not in use!)]
On 2024-06-14, Don Y <blockedofcourse@foo.invalid> wrote:
The front polarizer of a typical LCD TV ("really big monitor") tends to
be flimsy. A thin piece of glass/lexan might work in that it could
distribute the forces over a larger area -- providing "localized stiffness" >> instead of OVERALL stiffness.
Imagine yourself writing on a whiteboard; your motions tend not to be
delicate and deliberate but, rather, sharp and erratic. I need to protect >> the LCD display from your "abuse".
At the same time, ensuring that the protective layer doesn't end up scratched
and cloudy from repeated "markings".
If it was stiffer than the display glass you'd need to disassemble the
display to install the protector. (if wanting to mount it using adhesive) >>>
Or else live with a gap between the display and the protector (increasing >>> parallax and potentially collecting debris)
The parallax is disturbing. Your "ink" appears *in* the display but your
"writing actions" occur outside the protective layer. So, if there's a
schematic, program listing, photoplot, etc. being displayed on ("in")
the display, it requires a bit more effort to make your marks where you
want them, relative to what is already being displayed (and *updated* to
include your marks).
Have you switched fron non-visible ink to virtual ink? Do you
actually want a touch sensing screen?
If you think of a TV weatherperson interacting with a green-screen,
you can get a sense of how that sort of awkward interface affects
the precision of their annotations (anything "exact" is done off-line
where it can be revised over time; live updates tend to be really crude,
by comparison).
These days they use actual displays instead of chromakey. Sometimes
even touch sensing displays; there's funny videos of the presenters discovering this: eg. https://www.youtube.com/watch?v=0Goz0PnhEg8
If parallax is the only option, I can use an alternate technology that
eliminates it -- in favor of other shortcomings. :<
[I *really* don't want to use another plasma TV as they throw off
a lot of heat so you can't ALSO use them as a practical TV (which
would eliminate the need to STORE the thing when not in use!)]
Not knowing your actual requirements I'm going to refrain
from making specific suggestions.
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