Weird looking pixel

[SephiRock]

Hey there,

 

I know there are a ton of topics on the internet dealing with dead pixels, stuck pixels, bright pixels and so on. But i just can't grasp the nature of a problem i've now had with two different monitors.
I took a picture of a weird looking pixel i have on my LCD monitor. It doesn't seem to me like a dead pixels, because from what i understood, those are like pitch black. It doesn't seem like a stuck pixel either, because i can't see it on a black background.
Also, there seem to be chromatic anomalies when i look at it from different distances / angles. And i'm pretty sure it just appeared one day and wasn't there from the start.
I've had a similar problem with a previous monitor.

Has anyone an idea of what it is ? I guess it could also be some dust, but the fact that it seems to exactly match the shape of one single pixel troubles me.

Thank you

[starsmine]

looks like a dead red subpixel

[SephiRock]

14 minutes ago, starsmine said:

looks like a dead red subpixel

mmh i can still see it on blue 255 so i guess not ?
It looks more and more like a dust to me but man, i guess you're just fucked when such thing happens huh

[Mark Kaine]

a dead pixel is a dead pixel. rip

[SephiRock]

15 hours ago, Mark Kaine said:

a dead pixel is a dead pixel. rip

but isn't a dead pixel supposed to be black ?

[Mark Kaine]

59 minutes ago, SephiRock said:

but isn't a dead pixel supposed to be black ?

no.

[SephiRock]

On 8/29/2024 at 8:38 PM, Mark Kaine said:

no.

I'm confused then, i've always been told "dead" pixels appears either bright white or completely black.
Mine seems... idk, less bright than the other pixels ? Could you explain to me how it works if possible ?

[Mark Kaine]

27 minutes ago, SephiRock said:

I'm confused then, i've always been told "dead" pixels appears either bright white or completely black.
Mine seems... idk, less bright than the other pixels ? Could you explain to me how it works if possible ?

idk why it is like that... i have a dead pixel on an old laptop that's grey...

 

 

i mean what are you gonna do, its dead lol... you cant fix it, why does the color matter? 

[SephiRock]

3 minutes ago, Mark Kaine said:

idk why it is like that... i have a dead pixel on an old laptop that's grey...

 

 

i mean what are you gonna do, its dead lol... you cant fix it, why does the color matter? 

haha, i completely agree with you, the color doesn't really matter as long as it's not displaying the correct thing

I'm just worried about something else that i explained in another post
in case you wanna check that out :

 

[Stahlmann]

A pixel consists of 3 subpixels. Each of them is for one primary color, red, green and blue. To show white all thre subpixels need to light up. To show yellow, only the red and green subpixels need to light up. It's possible that only one of these 3 subpixels died. And that's why the whole pixel isn't just black one one of these subpixels dies.

 

So if your green subpixel dies and the display is supposed to show white, the pixel will show up as magenta because only red and blue can light up.

 

A GPU cannot kill a pixel. The GPU just sends data to the monitor's internal scaler, which then translates that digital signal to the image you're seeing.

[SephiRock]

On 9/4/2024 at 2:12 PM, Stahlmann said:

A pixel consists of 3 subpixels. Each of them is for one primary color, red, green and blue. To show white all thre subpixels need to light up. To show yellow, only the red and green subpixels need to light up. It's possible that only one of these 3 subpixels died. And that's why the whole pixel isn't just black one one of these subpixels dies.

 

So if your green subpixel dies and the display is supposed to show white, the pixel will show up as magenta because only red and blue can light up.

 

A GPU cannot kill a pixel. The GPU just sends data to the monitor's internal scaler, which then translates that digital signal to the image you're seeing.

Thank you for your input.
I had the same reasoning about subpixels, but if this is correct, then the pixel should appear normal on at least one of the three primary colors at 255 0 0, right ? However, that's not the case, so I'm still puzzled.

They just look weird, and I noticed even more of them today, which is freaking me out a bit. This screen is getting returned anyway, and I agree that a GPU "killing" pixels makes no sense, but i also have no explanation about the nature of those defects.