Database Info

[Q] Gtab screen idea

I just recently had an idea about the terrible viewing angle of the Gtab's screen. the basics of a LCD screen is a sandwich of glass, liquid crystal, electrodes, and more glass. but the most important part is the back-light, it allows you to see what is displayed on the glass. the back-light on most monitors consists of a row of LED lights and many sheets of paper that evenly spread and carry that light.
my thought being what if we replaced the the films and papers behind the glass to distribute the light better.
sorry for the long post but i realized this after watching a tare down video of an LCD screen. also after thinking when i turn my gtab upside down i can see it at most viewing angles (seeing as the LED strip is directly shining from that angle)
would this be possible?

how about finding a way to flip the screen around?

cruiser771 said:
how about finding a way to flip the screen around?
Click to expand...
Click to collapse
Hmm that still doesn't solve the problem. You still get that weird angle in portrate and I don't think the cables would reach from the other side.
Good thought though.

the viewing angle has nothing to do with the backlight. A stronger backlight would be better for outdoor viewing though.

There is another long thread on the site with most of this info in it.
Rev

I'm not saying its the backlight but the distribution of that light that is the problem
Sent from my Droid using XDA App

butchconner said:
There is another long thread on the site with most of this info in it.
Rev
Click to expand...
Click to collapse
Link plz. Sorry didn't see it when I searched
Sent from my Droid using XDA App

Issue with viewing angle are due to the circular polariser in front of the lcd and also to the material used in the capacitive film, I doubt you will get much by playing with the backlight...
That said the spec of the screen are not the worst I have seen, far from it...
Sent from my VEGAn-TAB-v1.0.0b5.1.1 using Tapatalk

P00r said:
That said the spec of the screen are not the worst I have seen, far from it...
Click to expand...
Click to collapse
I personally have zero issue with the screen. My Dell Mini 9 is the same way and I just view it head on. When I use my Mini9, I angle the screen to it's perpendicular to my view. I do the same with my Gtab.
Would it be better if it had an IPS with RGB LED backlighting? Yes, but it would also be about $400 more to buy.
That being said, I may ask LG for a sample through work, for one of their new IPS screens, just to see what a difference it makes.

P00r said:
Issue with viewing angle are due to the circular polariser in front of the lcd and also to the material used in the capacitive film, I doubt you will get much by playing with the backlight...
That said the spec of the screen are not the worst I have seen, far from it...
Sent from my VEGAn-TAB-v1.0.0b5.1.1 using Tapatalk
Click to expand...
Click to collapse
i know im talking about that capacitive film

h3llphyre said:
I personally have zero issue with the screen. My Dell Mini 9 is the same way and I just view it head on. When I use my Mini9, I angle the screen to it's perpendicular to my view. I do the same with my Gtab.
.
Click to expand...
Click to collapse
i dont have much of an issue till im typing or lay it flat on a table

Viewing Angles on Cellphone

Why do viewing angles matter on a cellphone? I can understand on a Television that is being watched by people in a room that are not sitting centered to the screen, but on a cellphone? Do people use their cellphone while it is flat on the desk off-centered?
It really seem quite odd to me. In reviews they make it seem like a big deal when an LCD screen looks washed out when viewed at an angle. Then they praise these iPhone IPS screens which are not usable in direct sunlight. I rather a screen that works in direct sunlight personally over one with great viewing angle.
Poor viewing angles = privacy screen

nicksti said:
Why do viewing angles matter on a cellphone? I can understand on a Television that is being watched by people in a room that are not sitting centered to the screen, but on a cellphone? Do people use their cellphone while it is flat on the desk off-centered?
It really seem quite odd to me. In reviews they make it seem like a big deal when an LCD screen looks washed out when viewed at an angle. Then they praise these iPhone IPS screens which are not usable in direct sunlight. I rather a screen that works in direct sunlight personally over one with great viewing angle.
Poor viewing angles = privacy screen
Click to expand...
Click to collapse
Same reason some reviews on cars with heated/ac seats vs cars without exist. I'm with you on this. I personally don't want a screen that someone seated next to me somewhere can also glance over and clearly read. I'll leave that kind of fuss to the tech snobs.

I understand what you are trying to say but I guess I do not see the analogy. I can see the utility of heated seats. Maybe not in Florida or California as much but I can see how having seats that apply heat directly to your body without making the entire cabin like a sauna useful (I had an Infiniti with heated seats but admittedly never used em)
But when do you need to look at your phone at a 170 degree angle?

[Q] Outdoor Viewing

How does the screen look outdoors?
I know its ips not the ips+ gorilla glass that is on the prime. How do they compare?
Is it readable and usable or do you find yourself using a makeshift sun visor with your hands to read the screen?
Display units in stores always have good lighting and great screen but Best Buy won't let you test tablets out in the parking lots. While most of the time I will use a tablet indoors, on occasion I will be outside, sitting out on a deck or using it in as a passenger in a car. Web browsing and using the office applications would be general use of the tablet. Some movie watching and angry birds in the mix.

dzslacker said:
How does the screen look outdoors?
I know its ips not the ips+ gorilla glass that is on the prime. How do they compare?
Is it readable and usable or do you find yourself using a makeshift sun visor with your hands to read the screen?
Display units in stores always have good lighting and great screen but Best Buy won't let you test tablets out in the parking lots. While most of the time I will use a tablet indoors, on occasion I will be outside, sitting out on a deck or using it in as a passenger in a car. Web browsing and using the office applications would be general use of the tablet. Some movie watching and angry birds in the mix.
Click to expand...
Click to collapse
You can definitely see the screen outside, to be honest i think the fingerprint smudges make it most difficult to see the screen in bright sunlight rather than the brightness being too low. If you wanted to realistically be able to use it outside then you would probably have to find somewhere in the shade, unless its a cloudy day, then youll be fine.

One issue I have, and living in South Florida it is kind of a big deal, is that turned portrait with polarized eyeware on the screen goes black. Turned landscape no issues... Coming from the original transformer this disappoints me. I had no issues on the og tf...

jhbryaniv said:
One issue I have, and living in South Florida it is kind of a big deal, is that turned portrait with polarized eyeware on the screen goes black. Turned landscape no issues... Coming from the original transformer this disappoints me. I had no issues on the og tf...
Click to expand...
Click to collapse
Lol I was wondering about that
Op - its the fingerprints that kill it
Sent from my SGH-T989 using XDA

jhbryaniv said:
One issue I have, and living in South Florida it is kind of a big deal, is that turned portrait with polarized eyeware on the screen goes black. Turned landscape no issues... Coming from the original transformer this disappoints me. I had no issues on the og tf...
Click to expand...
Click to collapse
Yep, that's how a polarizer works with all LCD screens. I won't bore you with the physics.

Citruspers said:
Yep, that's how a polarizer works with all LCD screens. I won't bore you with the physics.
Click to expand...
Click to collapse
Only taken entry level waves, but don't lcds emit polarized light in the first place?
Sent from my SGH-T989 using XDA

Well in the UK we're having a sunny spell right now and as I type I'm on my TF300 in the sunlight. I'm facing the sun so it's behind my tablet, I've got Polarised glasses on and I'm having no issue seeing the screen. It seems fine for web browsing though to be fair I'm yet to try a video. Wiht polarised glasses on I can still see the screen no matter the direciton. If I face the screen to the sun it's only clear enought to read black text on white.

I just took a picture of my tablet on my DHD in the sunlight. It's clearer for me than what it shows in the picture but it might give you an idea.
View attachment 1088260

So I went to watch Pokemon 8) in the sun, was quite difficult to see clearly. It was impossible to see an object a similar colour to the background.

Screen dark spots on polarized sun glass.

Hi anyone tried looking at their xzp on white screen using polarized sun glasses? The screen looks awful it has dark spots all around as if lcd has water damage.
Sent from my G8142 using XDA-Developers Legacy app

Yes I have, and yes I do... Probably something to do with the adhesive used? In mine it looks like streaks were applied... Like a half-assed job...

This one takes the cake. :silly:
I wonder what other ridiculous thing we can find to complain about?
So let's all put on polarized sunglasses and stare at white screens to see if we can find any flaws in the application of the adhesive that holds our screens in place.
I think some people simply have too much time on their hands! :good:

Question How many have Lens Flare issue?

The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.

Everyone, that's just the nature of the beast.

1gavinr said:
The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.
Click to expand...
Click to collapse
That's not an "issue", everyone has the lens flare. It only depends on the light angle and how it hits the lens.

It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos.

This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.

issasaurus said:
It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos. View attachment 5762543View attachment 5762541
Click to expand...
Click to collapse
Different focal lengths though so not a fair comparison.

MrBelter said:
This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.
Click to expand...
Click to collapse
If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.

devsk said:
If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.
Click to expand...
Click to collapse
It does only happen in some circumstances though and only once in a while on the Pixel 7 Pro to be fair and those circumstances are using the 1X lens while it pointing it at something very bright and this is when lens flare is always a risk.
The problem is a lack of any anti reflection coating on the glass covering the lens, it is just plain glass sadly. I have wondered if we could use something as a lens hood which should help dramatically with the issue as it stops light from falling across the lens.
FWIW i have a black skin over my camera bar, it certainly made a difference one the P6P but it makes no difference whatsoever on the P7P
Using a different focal length other than 1X the problem is much, much less noticeable.

I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?

hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!

devsk said:
I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?
Click to expand...
Click to collapse
As i said, i have a black skin on my camera bar, there is no metal showing.
Any lens worth its salt be it camera or glasses will have an anti-reflective coating.
Why Lens Coatings Are So Important in Photography
A look at the science of camera lens coatings and how they improve optics while reducing things like lens flares in photographs.
petapixel.com

devsk said:
hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!
Click to expand...
Click to collapse
They have on the lenses, they just didn't bother on the class covering them.

MrBelter said:
They have on the lenses, they just didn't bother on the class covering them.
Click to expand...
Click to collapse
Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?

devsk said:
Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?
Click to expand...
Click to collapse
That i don't know, i wouldn't want to risk buggering the whole thing up myself as any coating has to bond to the glass and getting it back off could be difficult.
The fix may be as simple as holding your hand above the lens like a simple lens hood to prevent light scatter.

I went to a Christmas light switch on last night and the lens flare and the simple reflections you get from the plain glass doesn't half make you study the scene to try to get around it, that in its self makes spontaneous street photography at night difficult.