Libra Colour Strange "burn in" after KLC stayed a few weeks with the same sleep screen.

Yasha · 01-05-2025, 12:03 PM

Hi everyone, I bought a KLC a few month ago but after leaving it a few weeks turned off, the title of the book I let as a sleep screen caused some kind of burn in. As you can see the title from the cover that caused the burn-in "Barsoom omnibus" is persisting on the cover on the right. I tried to refresh multiple time, reboot the device and even a complete factory reset but it still there.

Spoiler:

It seems to only affect colored pages when displaying black and white I can't notice it at all.

Did anyone came across something similar? Do you think the warranty cover that kind of thing?

Yasha · 01-07-2025, 12:22 PM

I may have found an explanation, apparently e-ink are sensible to UV light and long exposure can cause a degradation of contrast.
As it turn out I left my KLC near a window while turned off directly exposed to the sun and "Barsoom omnibus" cover on... for at least a few weeks

This sucks but at least now I know what to do or at least what not to do with e-ink devices and it took me 10s of hours of usage to notice it... So It could be worst.

Anyway protect your screens everyone!

Quoth · 01-07-2025, 12:42 PM

Colour eink will be much more sensitive to UV as the pigments bleach.

I've seen burn-in even on LCD monitors in a call centre and also partially faded screen where part only was in sunlight.

JSWolf · 01-07-2025, 02:41 PM

This is why a proper case should be used. Then the screen won't be exposed to the sun.

01-05-2025, 12:03 PM	#1
Yasha Junior Member Posts: 3 Karma: 10 Join Date: Jan 2025 Device: Kobo Libra Color	Strange "burn in" after KLC stayed a few weeks with the same sleep screen. Hi everyone, I bought a KLC a few month ago but after leaving it a few weeks turned off, the title of the book I let as a sleep screen caused some kind of burn in. As you can see the title from the cover that caused the burn-in "Barsoom omnibus" is persisting on the cover on the right. I tried to refresh multiple time, reboot the device and even a complete factory reset but it still there. Spoiler: It seems to only affect colored pages when displaying black and white I can't notice it at all. Did anyone came across something similar? Do you think the warranty cover that kind of thing? Attached Thumbnails

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01-07-2025, 12:22 PM	#2
Yasha Junior Member Posts: 3 Karma: 10 Join Date: Jan 2025 Device: Kobo Libra Color	I may have found an explanation, apparently e-ink are sensible to UV light and long exposure can cause a degradation of contrast. As it turn out I left my KLC near a window while turned off directly exposed to the sun and "Barsoom omnibus" cover on... for at least a few weeks This sucks but at least now I know what to do or at least what not to do with e-ink devices and it took me 10s of hours of usage to notice it... So It could be worst. Anyway protect your screens everyone!

01-07-2025, 12:42 PM	#3
Quoth Still reading Posts: 13,651 Karma: 103503445 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	Colour eink will be much more sensitive to UV as the pigments bleach. I've seen burn-in even on LCD monitors in a call centre and also partially faded screen where part only was in sunlight.

01-07-2025, 02:41 PM	#4
JSWolf Resident Curmudgeon Posts: 78,947 Karma: 144284074 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	This is why a proper case should be used. Then the screen won't be exposed to the sun.

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