4K OLED Laptop monitor has visible dots on the screen.

[phongle123]

Hi, there is an array/pattern of dots on the 4K OLED monitor screen that can faintly be seen on all colors. Easily seen on darker colors and covers the entire screen in a perfect pattern of dots. Here is a video on it. It is very hard to capture it but when I shine a light you can see what it is I'm seeing. But it only shines 1 vertical pattern at a time. In real life, I can see the entire array of dots.

 

[BobVonBob]

Is it a touchscreen? I don't know which laptop you have specifically, but patterns like this are fairly common in touchscreen OLED laptops. Something to do with the digitizer layer for the touchscreen not quite lining up with the OLED layer and causing repeating patterns. Like a moiré pattern if you're familiar with those.

[phongle123]

1 minute ago, BobVonBob said:

Is it a touchscreen? I don't know which laptop you have specifically, but patterns like this are fairly common in touchscreen OLED laptops. Something to do with the digitizer layer for the touchscreen not quite lining up with the OLED layer and causing repeating patterns. Like a moiré pattern if you're familiar with those.

Hi, yes it is a touchscreen display. So, essentially if it was lined it correctly (touchscreen and digitizer) I wouldn't be able to see these dot patterns? Therefore, this is a defective display essentially?

[BobVonBob]

Just now, phongle123 said:

Hi, yes it is a touchscreen display. So, essentially if it was lined it correctly (touchscreen and digitizer) I wouldn't be able to see these dot patterns? Therefore, this is a defective display essentially?

I'm not sure if it's defective or if it's a design issue. That is to say they might not be misaligned by a defect, but instead they aren't capable of being lined up to begin with. Perhaps their wires are at a different angle or they're sized differently.

[tikker]

Based on what was said earlier, it's probably not a defect, but simply a side-effect of how touchscreens can be constructed where the two layers are offset:

https://www.researchgate.net/figure/Touch-sensor-structure-In-two-layer-touch-screen-module-moire-pattern-appears-due-to-the_fig1_303822906

 

 

[Free_The_Jemhadar]

On 8/15/2022 at 3:18 PM, tikker said:

Based on what was said earlier, it's probably not a defect, but simply a side-effect of how touchscreens can be constructed where the two layers are offset:

https://www.researchgate.net/figure/Touch-sensor-structure-In-two-layer-touch-screen-module-moire-pattern-appears-due-to-the_fig1_303822906

 

 

If I may resurrect this as it still has relevance. Why then do only touch screen OLED laptops have this problem but not smartphones? Smartphones are all OLED touchscreen and they don't have a grainy digitizer layer? Surprised laptop manufacturers continue to make it this way, why not implement the same technology on phones. It's the sole reason I avoid OLED today and still prefer IPS because I need touch screen

[Alex Atkin UK]

8 minutes ago, Free_The_Jemhadar said:

If I may resurrect this as it still has relevance. Why then do only touch screen OLED laptops have this problem but not smartphones? Smartphones are all OLED touchscreen and they don't have a grainy digitizer layer? Surprised laptop manufacturers continue to make it this way, why not implement the same technology on phones. It's the sole reason I avoid OLED today and still prefer IPS because I need touch screen

Phones probably have to use more expensive digitisers because the screen is smaller.  Plus I think phones use more glass which would be far more risk of cracking in a laptop size.

 

Is it really that visible on a laptop when the screen is actually lit?  I'm curious as I'd love for my next laptop to have a touch screen OLED as I hate scrolling web pages with the touchpad (except on MacBooks as their two-finger scroll works better than any PC I've experienced).

[Free_The_Jemhadar]

1 hour ago, Alex Atkin UK said:

Phones probably have to use more expensive digitisers because the screen is smaller.  Plus I think phones use more glass which would be far more risk of cracking in a laptop size.

 

Is it really that visible on a laptop when the screen is actually lit?  I'm curious as I'd love for my next laptop to have a touch screen OLED as I hate scrolling web pages with the touchpad (except on MacBooks as their two-finger scroll works better than any PC I've experienced).

Well I am surprised laptop manufacturers are not doing the same or figuring something out

 

To me it is noticeable enough that I returned my asus zenbook. Looked like an old tube monitor, I may sound dramatic but coming from a sharp 3k IPS Screen, it really did.

 

Professional laptop reviewers have pointed this out to, see this review https://www.ultrabookreview.com/61344-2023-asus-zenbook-14-models/comment-page-1/#comment-335666. "you’ll have to accept the graininess caused by the digitizer layer, which I find annoying while browsing and reading texts"

 

Heres a person complaining about it on new z13 thinkpads:

https://www.reddit.com/r/thinkpad/comments/vyzgva/subtle_grain_pattern_on_z13_screen_touch/

 

Ive seen complaints about HP too.