Aura Polyester stand mat effect in screen

bramepc · 02-17-2014, 01:02 PM

The upper 2 - 3 cm region of the screen of my Aura has a rather annoying polyester strand mat pattern inside the top layer of the screen.
These are not scratch marks, the reader is brand new, it is really is under the surface.
The effect is only visible under certain angles (a relation between your head, the kobo and the light source), and is not visible if I turn on the backlight.
I tried taking a picture of it, which is a real PITA, but best effort so far is in attachment.

I cannot reproduce the effect in the lower 3/4 of the screen, so I am starting to think this is some kind of production defect in the upper area of my screen. At first i thought maybe it has something to do with the touch capability of the screen, but it looks too chaotic to be a matrix of some sort. Maybe some kind of stretch marks ?

Does anyone else see this ? Any insights ?

Edit: argh typo: stRand

keepsake · 02-17-2014, 05:28 PM

Quote:

Originally Posted by bramepc

The upper 2 - 3 cm region of the screen of my Aura has a rather annoying polyester strand mat pattern inside the top layer of the screen.
These are not scratch marks, the reader is brand new, it is really is under the surface.
The effect is only visible under certain angles (a relation between your head, the kobo and the light source), and is not visible if I turn on the backlight.
I tried taking a picture of it, which is a real PITA, but best effort so far is in attachment.

I cannot reproduce the effect in the lower 3/4 of the screen, so I am starting to think this is some kind of production defect in the upper area of my screen. At first i thought maybe it has something to do with the touch capability of the screen, but it looks too chaotic to be a matrix of some sort. Maybe some kind of stretch marks ?

Does anyone else see this ? Any insights ?

Edit: argh typo: stRand

It's like this on every Aura. It's probably part of the light dispersion layer.

RobertJSawyer · 02-18-2014, 12:40 PM

It's NOT like this on every Aura; mine, acquired in November 2013, has no such marks (and yes, I HAVE seen them on older units so I DO know what they look like; mine is pristine).

Ken Maltby · 02-18-2014, 12:59 PM

The only thing I see looks like a poorly applied screen protector effect. Perhaps one of the layers is not fully in contact with the layer below?

Nothing like it on my AuraHD.

Luck;
Ken

Dr. Drib · 02-18-2014, 01:37 PM

Quote:

Originally Posted by Ken Maltby

The only thing I see looks like a poorly applied screen protector effect. Perhaps one of the layers is not fully in contact with the layer below?

Nothing like it on my AuraHD.

Luck;
Ken

There are threads on this issue, but I don't recall anyone having this issue with an Aura HD - only on some Aura units.

RobertJSawyer · 02-18-2014, 02:23 PM

Dr. Drib is correct: this has only been reported on Aura units, not Aura HD units. I have both, and both have flawless screens (no bright pinpricks, no striations on the upper third of the screen). But I've seen several Auras (non-HD) that have the striations, and I've seen the pinpricks on Aura (non-HD) and on Glo units.

bramepc · 02-18-2014, 02:39 PM

Thanks for the feedback.

Quote:

Perhaps one of the layers is not fully in contact with the layer below?

Interesting hypothesis. I tried pushing the top layer but that does not seem to have any effect (of course if the problem is located in a layer which my pressure does not reach it proves nothing).

J_K · 02-18-2014, 03:11 PM

See "Kobo Aura’s Screen Has Visible Pattern..." at http://blog.the-ebook-reader.com/201...-than-aura-hd/ for a blog on this issue

keepsake · 02-19-2014, 08:34 PM

Actually, I didn't notice that it was that visible with the light on. Mine only has visible striations when there is lighting is in an awkward angle. The price label on mine said "12 2013" so I'm assuming that it's a fairly recent model.

Does your price label indicate any dates?

anacreon · 02-20-2014, 03:54 AM

I bought mine in January, and I noticed this effect (which I'd read about in this forum) for the first time yesterday with the sun hitting the angled surface directly through a bus window. It is quite faint, and didn't disturb reading for me.

ppulle · 02-20-2014, 05:13 AM

Hi,

I'd like to weigh in with a bit of an investigation.

I just went over my aura with a jewelry loupe that has LEDs arranged in a ring around the lens. Anything shiny thus get multiple highlights due to the points of the LEDs.

On a blank page with no backlight I could see this effect as I rotated to lens( and thus the light) around. On my unit the effect is very subtle unlike the pic, though admittedly I havent looked closely in direct sunlight.

However I only see this at the top, near the bottom I don't.

Based on this I put forward the theory this might actually be an artifact of the backlight not the cap screen. It may be that the gradient in the 'shiny' polystyrene effect is to distribute the light.

Can someone with a Glo give it the going over with high mag lens with the ring light I described? Even better if you can take some pics and tell use how you did it......had a go but no good result.

02-17-2014, 01:02 PM	#1
bramepc Member Posts: 10 Karma: 10 Join Date: Feb 2014 Device: kobo aura	Polyester stand mat effect in screen The upper 2 - 3 cm region of the screen of my Aura has a rather annoying polyester strand mat pattern inside the top layer of the screen. These are not scratch marks, the reader is brand new, it is really is under the surface. The effect is only visible under certain angles (a relation between your head, the kobo and the light source), and is not visible if I turn on the backlight. I tried taking a picture of it, which is a real PITA, but best effort so far is in attachment. I cannot reproduce the effect in the lower 3/4 of the screen, so I am starting to think this is some kind of production defect in the upper area of my screen. At first i thought maybe it has something to do with the touch capability of the screen, but it looks too chaotic to be a matrix of some sort. Maybe some kind of stretch marks ? Does anyone else see this ? Any insights ? Edit: argh typo: stRand Attached Thumbnails Last edited by bramepc; 02-17-2014 at 02:52 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Romance Rice, Alice Hegan: Calvary Alley. v1. 20 Mat 2013	crutledge	Kindle Books	0	05-20-2013 08:04 AM
Romance Rice, Alice Hegan: Calvary Alley. v1. 20 Mat 2013	crutledge	ePub Books	0	05-20-2013 08:02 AM
Glo Font change has no effect on the screen	sunny1z	Kobo Reader	5	01-17-2013 07:33 AM
Onyx M92 stand by screen	Tempora	Onyx Boox	6	07-04-2012 03:30 PM
PRS-505 Does a broken e ink screen effect the device turning on?	cayle	Sony Reader	2	07-27-2010 08:51 PM

02-18-2014, 12:40 PM	#3
RobertJSawyer Guru Posts: 733 Karma: 3911762 Join Date: Jun 2006 Location: Toronto Device: Kobo Libra 2, Clara 2E, and Clara HD; Kindle PaperWhite	It's NOT like this on every Aura; mine, acquired in November 2013, has no such marks (and yes, I HAVE seen them on older units so I DO know what they look like; mine is pristine).

02-18-2014, 12:59 PM	#4
Ken Maltby Wizard Posts: 4,466 Karma: 6900052 Join Date: Dec 2009 Location: The Heart of Texas Device: Boox Note2, AuraHD, PDA,	The only thing I see looks like a poorly applied screen protector effect. Perhaps one of the layers is not fully in contact with the layer below? Nothing like it on my AuraHD. Luck; Ken

02-18-2014, 02:23 PM	#6
RobertJSawyer Guru Posts: 733 Karma: 3911762 Join Date: Jun 2006 Location: Toronto Device: Kobo Libra 2, Clara 2E, and Clara HD; Kindle PaperWhite	Dr. Drib is correct: this has only been reported on Aura units, not Aura HD units. I have both, and both have flawless screens (no bright pinpricks, no striations on the upper third of the screen). But I've seen several Auras (non-HD) that have the striations, and I've seen the pinpricks on Aura (non-HD) and on Glo units.

02-18-2014, 03:11 PM	#8
J_K Enthusiast Posts: 47 Karma: 26706 Join Date: Jan 2014 Location: London, UK Device: H2O 2, Aura 2, Clara HD, Touch	See "Kobo Aura’s Screen Has Visible Pattern..." at http://blog.the-ebook-reader.com/201...-than-aura-hd/ for a blog on this issue

02-19-2014, 08:34 PM	#9
keepsake Member Posts: 13 Karma: 12048 Join Date: Mar 2012 Device: Kobo Touch, Kobo Aura	Actually, I didn't notice that it was that visible with the light on. Mine only has visible striations when there is lighting is in an awkward angle. The price label on mine said "12 2013" so I'm assuming that it's a fairly recent model. Does your price label indicate any dates?

02-20-2014, 03:54 AM	#10
anacreon Guru Posts: 976 Karma: 3475832 Join Date: May 2012 Location: France Device: Elipsa, Sage, Libra 2	I bought mine in January, and I noticed this effect (which I'd read about in this forum) for the first time yesterday with the sun hitting the angled surface directly through a bus window. It is quite faint, and didn't disturb reading for me.

02-20-2014, 05:13 AM	#11
ppulle Member Posts: 16 Karma: 16194 Join Date: Jul 2012 Device: kobo	Hi, I'd like to weigh in with a bit of an investigation. I just went over my aura with a jewelry loupe that has LEDs arranged in a ring around the lens. Anything shiny thus get multiple highlights due to the points of the LEDs. On a blank page with no backlight I could see this effect as I rotated to lens( and thus the light) around. On my unit the effect is very subtle unlike the pic, though admittedly I havent looked closely in direct sunlight. However I only see this at the top, near the bottom I don't. Based on this I put forward the theory this might actually be an artifact of the backlight not the cap screen. It may be that the gradient in the 'shiny' polystyrene effect is to distribute the light. Can someone with a Glo give it the going over with high mag lens with the ring light I described? Even better if you can take some pics and tell use how you did it......had a go but no good result.