Does anyone know what this screen fault is called?

[ncrossy1980]

Odd question but when I try and Google anything related to "screen marks" I get nothing but backlight bleed posts and dead pixel information.  Hoping someone knows what this actual issue is called so I can look into a fix, or I can concede that the monitor is knackered and never buy LG again.  I do not expect this kind of damage on a 3 year old premium product, but that's my own beef to deal with.

See attached.  When the monitor is turned on from cold, you can clearly see the shadow marks appearing across the screen, they kind of look like water stains but there's never been any water anywhere near it.  This started around 9 months ago with just one small inch long mark, but it's gotten progressively worse day by day.  I would suspect in time this will spread across the entire display.  It's noticeably more prominent when the display is cold, but when it warms up they slowly fade out but are always visible on greyish colours.

If anyone can shed some light on what this might be, I can then start making some decisions! Cheers folks.

[iLostMyXbox21]

i dont get it it just looks like you made a big grey square

[.Apex.]

@ncrossy1980

i believe this is called Grey Uniformity 

[.Apex.]

https://www.rtings.com/tv/tests/picture-quality/gray-uniformity-dirty-screen-effect-dse

[ncrossy1980]

[porina]

Good question. I don't know what it is called either but I have the same on an old Acer TV.

[ncrossy1980]

9 minutes ago, syn2112 said:

https://www.rtings.com/tv/tests/picture-quality/gray-uniformity-dirty-screen-effect-dse

Reading up on that grey uniformity explanation, it doesn't sound consistent with what I've got? My damage/fault is like random stain marks whereas grey uniformity looks like the panels ability to consistently spread even light across the display, it's localised in the middle of the display now and is spreading over time

[.Apex.]

10 minutes ago, ncrossy1980 said:

Reading up on that grey uniformity explanation, it doesn't sound consistent with what I've got? My damage/fault is like random stain marks whereas grey uniformity looks like the panels ability to consistently spread even light across the display, it's localised in the middle of the display now and is spreading over time

that's true but i can't really tell from the photos, it could also be very likely just condensation if you're living in cold humid area

[.Apex.]

11 minutes ago, ncrossy1980 said:

Reading up on that grey uniformity explanation, it doesn't sound consistent with what I've got? My damage/fault is like random stain marks whereas grey uniformity looks like the panels ability to consistently spread even light across the display, it's localised in the middle of the display now and is spreading over time

you could try drying it with a hair dryer and see if that improves anything

[ncrossy1980]

Just now, syn2112 said:

you could try drying it with a hair dryer and see if that improves anything

Fair enough, I'd like to believe it was condensation as that would give me something to go with but I'm in the UK, it ain't a humid environment here, and I'm in a well ventilated house with zero internal condensation issues... there's never any on the internal windows and I've got multiple panels in here and around 8 PCs in this room which have shown no signs of damp ever.  I'll try the hair dyer though just in case, you never know.