I guess i'm OCD about clean screens

[Th3_uN1Qu3]

I've just sucessfully cleaned the inside of my 19" Nec LCD. It was FULL of dust inside the screen when i got it, it looked real ugly. Fortunately most of it was between the TFT and the foil directly behind it. I also taped the outside of the LCD frame after putting it back together so no more dust can get in.

As it's been taken apart in my bathroom a bit of dust still made its way back in before i closed it up. There are 3 or 4 tiny spots left, and they're light gray not black like those it had before. They are only there if i LOOK for them, but they are there. Now come to think of it, ALL screens i've owned or seen had at least one dust speck inside. Especially laptops. And people aren't bothered by them that much. I'm going to sell it, 1280x1024 is not enough resolution for me. And it's very likely that the buyer won't notice the specks.

That's the main reason i liked (and still do, but it's hard to find a real good one nowadays), CRT monitors. There's no way dust could get into a sealed glass tube.

[Krankshaft]

Re: I guess i'm OCD about clean screens

Make a ghetto clean room out of a sealed plywood box with fans pulling in air through furnace HEPA filters. The filters will prevent dust from entering. If I ever had to disassemble a panel to that level again that's what I'd do.

LCD panels are assembled in clean rooms which is the only reason why they're dust free inside. There is usually a felt gasket to keep the dust out of the LCD panel/polarizing film sheets/CCFL light diffuser sandwich.

Whatever you do use when removing dust from the inside use clean oil free compressed air (nitrogen is better) any type of microfiber cloth will create static that will attract more dust and blow the panel.

CRTs take up too much space and are heavy as hell. The only thing I can say in their favor is you can't beat their contrast ratios even so I've moved on.

[Th3_uN1Qu3]

Re: I guess i'm OCD about clean screens

LCD panels are assembled in clean rooms which is the only reason why they're dust free inside. There is usually a felt gasket to keep the dust out of the LCD panel/polarizing film sheets/CCFL light diffuser sandwich.

I know about the clean room thing. I've been long planning to make one only i can't figure out where the heck would i put it. Anyway. All laptops i've had came with some dust inside the screen from the factory. And gathered more during the years. Sometimes annoyingly so. And i haven't had THAT many laptops but it seems it's very common.

And apart from mobile phones (but that's between casing and LCD not within the screen itself), i've never seen felt gaskets on any display, this one included. It's like they build them to get dusty in the first place.

[Krankshaft]

Re: I guess i'm OCD about clean screens

Oh you're talking about laptop displays I'm talking about stand alone LCD displays. I can see gasketing to keep dust out not being done on laptops since they want to keep the profile of the panel as slim as possible.

These crappy laptops Apple is releasing are so thin I think I could accidentally snap one in half.

Cell phones no doubt dust always finds it's way in or is there when it's new out of the box. Then again they're manufactured using sweat shop labor so that's the quality you get.

[dobber]

Re: I guess i'm OCD about clean screens

I know what you mean, about the screens. I have a Dell Inspiron 1721 and a HP DV5000 that I refuse to sell just becouse there are blemished in the back ground of the screens. I do have extra screens that fit the DV5000 but they are the matted type not the ultra bright type. I was hoping to find a way to bleach the white sheets between the screens to repair them but I don't think it will work. I know that the 17 in screens for the Dell are very expensive, so I don't have much choice but to wait till i get a good screen in a junk system.

[Th3_uN1Qu3]

Re: I guess i'm OCD about clean screens

Well the NEC in question is a desktop type display, and no gasket to be seen. The TFT panel is held in place by its frame only, there was no protective anything between it and the frame. Also the frame was quite loose around the screen, particularly at the bottom (where most of the dust was located). Like i mentioned i used tape to cover it when i put it back together.