Ereader screens are about to get a big upgrade

[JSWolf]

And speaking of screens, would it not be better if eInk stopped selling Carta screens and just sold Mobious screens? Then we could do away with the fragile glass and also lower the weight.

[John F]

I mis-read the article. I thought they were impling that the on-touch tech was increasing the contrast and sharpness vs other touch technologies. Reading the article, it says that it increases contrast and sharpness of Carta screens.

[John F]

Originally Posted by tomsem

They claim it is 30% better contrast. If there’s a layer, it is not occluding the display, which is the existing Carta/Kaleido (maybe it is below that layer).

The link has a diagram showing the touch layer above the eink layer.

[rcentros]

Originally Posted by JSWolf

https://www.techradar.com/news/eread...BT=94351463061

Sounds good.

[koboy]

Originally Posted by JSWolf

And speaking of screens, would it not be better if eInk stopped selling Carta screens and just sold Mobious screens? Then we could do away with the fragile glass and also lower the weight.

yes.

best wishes koboy

[ottischwenk]

Originally Posted by JSWolf

And speaking of screens, would it not be better if eInk stopped selling Carta screens and just sold Mobious screens? Then we could do away with the fragile glass and also lower the weight.

No, because plastic surfaces would also have to be created in order to avoid the questionability, and these do not have glass transparency and are also easily scratched.

And in order to avoid that, covers are needed again, which
- increase the weight
- and cost extra.

[rkomar]

Originally Posted by ottischwenk

No, because plastic surfaces would also have to be created in order to avoid the questionability, and these do not have glass transparency and are also easily scratched.

And in order to avoid that, covers are needed again, which
- increase the weight
- and cost extra.

The substrate is _below_ the eink layer. It is not the surface that you touch on the outside of the device. The glass substrate is flat and rigid, but easily broken. The plastic substrate is not as flat and much less rigid, but more durable than glass. Since the plastic substrate can flex a little, you can make a case that is less rigid than for glass. That makes the device much lighter (thinner case, lighter display).

[ottischwenk]

Originally Posted by rkomar

The substrate is _below_ the eink layer. It is not the surface that you touch on the outside of the device. The glass substrate is flat and rigid, but easily broken. The plastic substrate is not as flat and much less rigid, but more durable than glass. Since the plastic substrate can flex a little, you can make a case that is less rigid than for glass. That makes the device much lighter (thinner case, lighter display).

How often is this nonsense explained to me?

The module doesn't matter at all for the quality of the image - with an appropriate base, glass is also quite shatterproof; in terms of weight, there is hardly any difference.

The module needs a cover layer to the outside.

This can be made of plastic or glass - plastic is not as clear as glass - the image is worse; it can also be scratched much more easily.

The choice remains with 10.3: better image quality and slightly heavier vs. fairly shatterproof.

[JSWolf]

Originally Posted by ottischwenk

How often is this nonsense explained to me?

The module doesn't matter at all for the quality of the image - with an appropriate base, glass is also quite shatterproof; in terms of weight, there is hardly any difference.

The module needs a cover layer to the outside.

This can be made of plastic or glass - plastic is not as clear as glass - the image is worse; it can also be scratched much more easily.

The choice remains with 10.3: better image quality and slightly heavier vs. fairly shatterproof.

It will be explained to you for as long as it takes you to get it.

We are talking about the substrate. The glass substrate is heavier and more fragile. It when you see a picture of someone's broken screen, that's the glass substrate that has broken. The plastic substrate does not break nearly as easily. Also, it's lighter in weight. So you can have a heftier battery because you've given up some of the weight with the plastic substrate.

[ottischwenk]

Originally Posted by JSWolf

We are talking about the substrate.

From the substrate alone you have nothing!

You need the screen and this consists not only of the module, but also of the mounting base for the module, and a possible light guide and a protective surface to the outside.

The difference in the module is 3 g for the 10.3 inch module!

And there is so much chatter about that?

The thing that makes it heavier is the glass layer to the outside, which in turn provides better image quality and the base that the glass used does not break so easily.

The "break-proof" and lighter displays have a plastic layer on the outside and thus a somewhat poorer picture quality.

The choice remains: heavier with glass and better picture quality versus lighter and more break-proof, but also easier to scratch.

I have both, so I can compare them, and I prefer glass.

Translated with www.DeepL.com/Translator (free version)

[DNSB]

Originally Posted by ottischwenk

The difference in the module is 3 g for the 10.3 inch module!

Checking on the eInk site, the VD1400-HOB (Mobius, 8", Carta 1200) display module shows a weight of 28g while the VB3300-GHA (glass, 7.8", Carta) display module shows a weight of 37g.

I find it rather doubtful that the 10.3" glass substrate display will have a difference in weight of 3 grams compared to the 10.3" Mobius display considering a VB3300-GHA 7.8" glass substrate display module weighs 5 grams more than the VB3300-KCA10.3" Mobius display module with it's 32g weight.

[ottischwenk]

Originally Posted by DNSB

I find it rather doubtful

Aha.
And with the new 8s against the old 7.8s are also only 9 g difference.
And why do you think all new developments are based on glass?

It is only not yet possible for 13.3 inches for stability reasons.

[JSWolf]

Originally Posted by ottischwenk

The difference in the module is 3 g for the 10.3 inch module!

7.8˝ ePaper Display [VB3300-GHA] is 36.9g.
10.3˝ ePaper Display [VB3300-KCA] is 32g.

It's easily more then 5g difference. So why would you want the heavier more fragile screen?

[JSWolf]

Originally Posted by ottischwenk

Aha.
And with the new 8s against the old 7.8s are also only 9 g difference.
And why do you think all new developments are based on glass?

It is only not yet possible for 13.3 inches for stability reasons.

Why do you insist on getting it oh so wrong? You think we are talking about the top of the screen when we are talking about the substrate that's UNDER the display.

[ottischwenk]

Originally Posted by JSWolf

7.8˝ ePaper Display [VB3300-GHA] is 36.9g.
10.3˝ ePaper Display [VB3300-KCA] is 32g.

It's easily more then 5g difference. So why would you want the heavier more fragile screen?

Because an outer layer of plastic is relatively cloudy and sensitive to scratches.
And if you take a layer of glass there, it will be almost as heavy again.
The main difference in weight is not in the module, but in the assembly and protection.