Can the DM41X DM42 Screen Get Image Burn?

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Weegie
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Can the DM41X DM42 Screen Get Image Burn?

Post by Weegie »

Probably a silly question but thought I'd ask

The standard OFF state cycles a series of images. I prefer just to have one image (or perhaps none if necessary) and it ocurred to me that pehaps it could burn a ghost image into the screen over time.

I know that this isn't really so much of a problem these days and was more an issue with old CRT monitors on computers

However as I really don't know anything about screen technology I thought I'd ask the question
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moonwalker
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by moonwalker »

I know with TFT screens you can get not so much image burn as much as stuck pixels. It manifests like a ghost version of whatever image that part of the screen was showing for a long time over the current image. E.g. at work I had a faint Visual Studio icon overlaying my task bar even when no Visual Studio was running at the moment. To date I've observed this issue only on twisted nematic (TN) TFT LCD displays. I have no idea whether (what I assume to be) Polymer Network LCD (other name for Sharp's Memory LCD) has the same issue or not, but my guess is more likely it doesn't.
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rprosperi
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by rprosperi »

While I can't say it's impossible, there has never been any report of, or evidence of this happening, so it's extremely unlikely to occur. Also, I have older DM4x machines that have sat untouched for a year, that showed no sign of ghosting when turned on.
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BruceH
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by BruceH »

I'm going to revive this old thread because I have noticed a slight "burn in" on my original DM42 (one of the early models with the PGM pin hole in the back).

It has sat with the same offimage on display for a long time - years. In normal use you don't see anything but I recently tried a different offimage, one with large areas of black (pixels on), and noticed that the original offimage shows up within the black as "paler" pixels. You have to look closely but it's definitely there.

On a white (pixels off) screen, there is nothing visible at all.

So, if you want to keep your DM42 screen pristine, I would suggest changing the offimage every two or three months and use images that don't have pixels in common (as otherwise they won't get a rest). :-)
etb
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by etb »

Good advice. I’m considering buying a DM42 and I’m amazed you can go months without using yours!
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Panchdara
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by Panchdara »

BruceH wrote:
Mon Apr 03, 2023 8:09 pm
So, if you want to keep your DM42 screen pristine, I would suggest changing the offimage every two or three months and use images that don't have pixels in common (as otherwise they won't get a rest). :-)
Why not just use a blank image? Jus' sayin' :?:
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Walter
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by Walter »

Panchdara wrote:
Sun Apr 23, 2023 7:57 pm
BruceH wrote:
Mon Apr 03, 2023 8:09 pm
So, if you want to keep your DM42 screen pristine, I would suggest changing the offimage every two or three months and use images that don't have pixels in common (as otherwise they won't get a rest). :-)
Why not just use a blank image? Jus' sayin' :?:
Once upon a time there was a blank offimage. Else it's easily made.
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Panchdara
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by Panchdara »

Here it is...
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toml_12953
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by toml_12953 »

Panchdara wrote:
Mon Apr 24, 2023 11:42 am
Here it is...
I love the hi-res detail in that picture!
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Re: Can the DM41X DM42 Screen Get Image Burn?

Post by H2X »

toml_12953 wrote:
Mon Apr 24, 2023 10:12 pm
Panchdara wrote:
Mon Apr 24, 2023 11:42 am
Here it is...
I love the hi-res detail in that picture!
That's a HDR picture if I ever saw one!
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