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
Can the DM41X DM42 Screen Get Image Burn?
- moonwalker
- Posts: 12
- Joined: Tue Jun 22, 2021 8:00 am
Re: Can the DM41X DM42 Screen Get Image Burn?
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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Re: Can the DM41X DM42 Screen Get Image Burn?
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.
--bob p
DM42: β00071 & 00282, DM41X: β00071 & 00656, DM10L: 071/100
DM42: β00071 & 00282, DM41X: β00071 & 00656, DM10L: 071/100
Re: Can the DM41X DM42 Screen Get Image Burn?
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).
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).
Re: Can the DM41X DM42 Screen Get Image Burn?
Good advice. I’m considering buying a DM42 and I’m amazed you can go months without using yours!
hp42s, dm42 sn 09887, hp48g, hp49g+, hp prime g2
Re: Can the DM41X DM42 Screen Get Image Burn?
Once upon a time there was a blank offimage. Else it's easily made.
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041
Re: Can the DM41X DM42 Screen Get Image Burn?
Here it is...
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Re: Can the DM41X DM42 Screen Get Image Burn?
Tom L
Some people call me inept but I'm as ept as anybody!
DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM41X SN: 00506 (Shipping)
DM42 SN: 00025 (Beta)
DM42 SN: 00221 (Shipping)
WP43 SN: 00025 (Prototype)
Some people call me inept but I'm as ept as anybody!
DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM41X SN: 00506 (Shipping)
DM42 SN: 00025 (Beta)
DM42 SN: 00221 (Shipping)
WP43 SN: 00025 (Prototype)
Re: Can the DM41X DM42 Screen Get Image Burn?
That's a HDR picture if I ever saw one!
I believe in free will. Just can't help it.