Ended up using my HTC Wildfire just after I'd been writing on the white board at work in a meeting, where I'd got marker ink on my thumb/fingers.
I stupidly and unfortunately added a calendar event on the phone shortly after and got ink on the screen. No issue I thought, so got home and tried a Johnson + Johnson wet wipe on it, but the mark didn't come out. It looks like it's quite deep into the screen.
I turned it all off, got a soft old dish towel and tried rubbing it out with some neat alcohol (the domestic stuff) but this hasn't worked either.
It looks like its pixel damage now, a bit like when you get those very small thunder fly things in picture frames and similar. It doesn't show up on black/dark backgrounds too well, but very evident on lighter contrast and colours.
The marks are as below;



Do I need a new screen now?
Any other 'removal' or drying techniques that might work, perhaps the boiler room for a night with the fascia off or is it beyond that?
Thanks.