Why eInk screens poorly render text without a full refresh?

NiMa · 08-05-2020, 10:31 AM

Hi,
I think that that is not only specific to Kobos, but I'm experiencing it with my Libra, and I've experienced it before on my Glo HD. The thing is: I have very sharp eyes, and I *hate* seeing the fonts rendering like if it was in 167 ppi before a full-screen refresh.
I know I could set the refresh to each page, but overtime this will, maybe, slowly reduce the lifespan of the screen (maybe, but I don't think so).

But my question here is not about lifespan;
TL;DR: Does anyone knows why, without a full refresh, the text looks fussy and not sharp?

Deskisamess · 08-05-2020, 11:19 AM

Because it takes the full refresh to fully "re-draw" the screen? I'm sure there are tons of explanations on the interwebs as to how e-ink works. The fact that there are options for the screens sort of explains it already.

JSWolf · 08-05-2020, 11:35 AM

I do not find an issue rendering text without a full screen refresh.

NiLuJe · 08-05-2020, 01:01 PM

Look one thread below.

Sirtel · 08-06-2020, 10:25 AM

I have set all my ereaders to fully refresh every page, except for the Nook which doesn't have the option to do so. If that diminishes the lifetime of a screen, so be it. I cannot stand partial refresh either. Chances are I won't be using any of my ereaders long enough for their screens to die.

JSWolf · 08-06-2020, 10:51 AM

My H2O is set to refresh after (I think 50 pages). But with Kobo, it's very easy to refersh the screen should it need it sooner.

08-05-2020, 10:31 AM	#1
NiMa Fanatic Posts: 507 Karma: 2390534 Join Date: Jun 2020 Location: Somewhere in the Universe Device: Kobo Libra, Glo HD, Touch C/B, Mini, Glo, Aura SE, Clara HD, KT	Why eInk screens poorly render text without a full refresh? Hi, I think that that is not only specific to Kobos, but I'm experiencing it with my Libra, and I've experienced it before on my Glo HD. The thing is: I have very sharp eyes, and I hate seeing the fonts rendering like if it was in 167 ppi before a full-screen refresh. I know I could set the refresh to each page, but overtime this will, maybe, slowly reduce the lifespan of the screen (maybe, but I don't think so). But my question here is not about lifespan; TL;DR: Does anyone knows why, without a full refresh, the text looks fussy and not sharp?

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08-05-2020, 11:19 AM	#2
Deskisamess Wizard Posts: 2,752 Karma: 45301087 Join Date: Sep 2012 Location: Ohio Device: iPhone 13 Pro, iPad mini, iPad Pro 12.9",Paperwhite 6.8", Scribe 2022	Because it takes the full refresh to fully "re-draw" the screen? I'm sure there are tons of explanations on the interwebs as to how e-ink works. The fact that there are options for the screens sort of explains it already.

08-05-2020, 11:35 AM	#3
JSWolf Resident Curmudgeon Posts: 79,751 Karma: 145864619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	I do not find an issue rendering text without a full screen refresh.

08-05-2020, 01:01 PM	#4
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Look one thread below.

08-06-2020, 10:25 AM	#5
Sirtel Grand Sorcerer Posts: 13,471 Karma: 239219543 Join Date: Jan 2014 Location: Estonia Device: Kobo Sage & Libra 2	I have set all my ereaders to fully refresh every page, except for the Nook which doesn't have the option to do so. If that diminishes the lifetime of a screen, so be it. I cannot stand partial refresh either. Chances are I won't be using any of my ereaders long enough for their screens to die.

08-06-2020, 10:51 AM	#6
JSWolf Resident Curmudgeon Posts: 79,751 Karma: 145864619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	My H2O is set to refresh after (I think 50 pages). But with Kobo, it's very easy to refersh the screen should it need it sooner.

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