Next Jolla device should have anti-glare polariser and LED/AMOLED display

asked 2014-06-20 15:05:27 +0200

lhorga

1635 ●9 ●21 ●19

http://www.devtelsoftware...

updated 2014-09-16 08:29:02 +0200

cybette

7999 ●62 ●66 ●56

moderator

https://cybette.github.io...

The next Jolla device (or a facelift of this one) should have anti-glare polariser AMOLED display in order to improve daylight screen visibility / power consumption. It is rather hard to see anything on the Jolla screen in direct sun light since the screen does not seem to be trans-reflective, at least compared to N9.

Also AMOLED would enable nice features like idle on-screen clock as this one: http://upload.wikimedia.org/wikipedia/commons/5/5b/Nokia_n9.jpeg

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1

Yeah, but AMOLED sucks for display quality. You can argue LED or keep the LCD as it is.

gabriel ( 2014-06-20 15:19:00 +0200 )edit

4

The idea would be to have at least the same visibility in sunlight as N9 has. That one has AMOLED, that's why I brought that into question, I am not any electronics expert otherwise :) If there is a better technology then great.

Also the LED / AMOLED would enable lighting up very small parts of the screen like in the case of the idle-screen clock feature of N9, without draining the battery. As far as I know the LCD has the disadvantage of having to light up the whole backlight of the display in order to get something visible which draws a lot more power than the LED/AMOLED variant thus making that clock feature impractical.

lhorga ( 2014-06-20 15:26:44 +0200 )edit

3

I prefer much more IPS screens, I find amoled inconsistent and with strange casts when looked at from different angles. For sure I would prefer a screen with better sunlight visibility, these days of summer I find very difficult reading the screen.

magullo ( 2014-06-20 15:50:59 +0200 )edit

13

AMOLED does by no means suck for display quality. It does suffer from nonlinear dark colour reproduction but on the other hand, that's also where LCD (and presumably LED as well in this size scale) reproduce grey instead of true black. I found myself disappointed to find out that I'm going to have to give up AMOLED as I chose to purchase a Jolla. The always visible clock was very handy.

fercen ( 2014-06-20 15:53:59 +0200 )edit

1

I do agree!

iuliuh ( 2014-06-20 16:01:04 +0200 )edit

12

answered 2014-06-21 02:36:41 +0200

00prometheus
13308 ●135 ●174 ●152

updated 2014-06-21 13:25:03 +0200

For direct sunlight visibility you need a transreflective screen. That way, the sunlight works in your favour since it is the sunlight itself that lights up the screen, just like sunlight on a piece of paper. It also saves battery since the backlight doesn't need to try to outshine the sun, which isn't possible anyway. This is what gave the N900 so excellent visibility in direct sunlight. The only disadvantage is that colours get washed out in strong sunlight, but at least you can see what is on the screen at all. The other disadvantage is that a transreflective screen must be based on back-lighting, so it can't be used for AMOLED displays.

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1

are there phones today with this technology?

magullo ( 2014-06-21 10:24:59 +0200 )edit

1

Not sure about current phones, but there are lots of phones that have had the feature, for example the N900.

00prometheus ( 2014-06-21 13:18:28 +0200 )edit

5

So then what we need is either AMOLED or trans-reflective. I don't really care about image quality in direct sunlight, I care just about distinguishing what's on the screen. N9 and N900 did much better on this aspect. Leaving aside the fact that N9 had light UIs, the N900 with Maemo didn't, but still, because of the thans-reflective screen, in N900, the screen visibility was really good on direct sunlight, even on very dark UIs.

lhorga ( 2014-06-21 20:26:47 +0200 )edit

5

I already wondered why the display of the Jolla is so much worse in direct sunlight compared to the much older N900. Thanks for the explanation.

Cmdr_Zod ( 2014-06-22 20:33:56 +0200 )edit

3

answered 2015-01-04 12:28:27 +0200

bilgy_no1
7008 ●55 ●100 ●104

I think the title should reflect the outcome you want (i.e. better outside visibility) instead of the proposed technology (ie AMOLED).

Screen visibilty outdoors in bright conditions is indeed very poor. However, I think this is caused by the very low brightness and contrast of the current screen.

AMOLED can provide excellent contrast, because black is truly black (no backlight). IPS/LCD technology usually can provide higher screen brightness. However, in recent years, both technologies have improved and good outdoor visibility can be achieved with both (high brightness and good contrast).

Technologies have developed in other areas as well. AMOLED colour reproduction has improved, as has IPS energy consumption.

So, for a Jolla 2, I don't really prefer one over the other. I just hope that it will feature high much better screen than the Jolla 1. Besides better brightness and contrast, that should include improvements in resolution and colour reproduction.

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answered 2015-01-04 11:10:22 +0200

smoku

3056 ●40 ●59 ●64

http://xiaoka.com/

You can have idle on-screen clock already on Jolla. It's just that without AMOLED screen it is much more power hungry, so it activates for a few seconds only after pulling out of pocket.

Instruction to enable is here: https://together.jolla.com/question/937/glance-screen/?answer=50215#post-id-50215

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2

I would consider that a bandaid. The real solution is an AMOLED screen which will allow the on-screen clock to show all the time with negligible power loss, like how it works with the awesome N9.

Robin ( 2015-01-04 13:18:15 +0200 )edit

1

Yes. Completely agree. LED or Plasma (or similar technology) cell screen is a requirement for this feature to make real sense. Just mentioned for completeness that Sailfish OS is already ready. :) (there are rumors, that the first device was designed with AMOLED screen, but it flopped and Jolla had to resort to what Qisda had in offer)

smoku ( 2015-01-04 14:24:10 +0200 )edit

2

answered 2015-01-04 13:06:31 +0200

idro
885 ●20 ●33 ●36

I hope that the next screen will be always IPS but with a better glass so we will not have reflection, and we will see well the screen also with lot of light.

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Next Jolla device should have anti-glare polariser and LED/AMOLED display

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