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Privacy monitor hacked from an old LCD Monitor

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Picture of Privacy monitor hacked from an old LCD Monitor
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Finally you can do something with that old LCD monitor you have in the garage.
You can turn it into a privacy monitor! It looks all white to everybody except you, because you are wearing "magic" glasses!
All you really have to have is a pair of old glasses, x-acto knife or a box cutter and some solvent (paint thinner)




Here is what I used:
an LCD monitor of course
single use 3D glasses from the movie theater (old sunglasses are just fine)
paint thinner (or some other solvent such as toluene, turpentine, acetone, methyl acetate, ethyl acetate etc)
box cutter (and CNC laser cutter :) but that you don't really need, I'm sure x-acto knife and a steady hand would do just fine)
screwdriver or a drill
paper towels
superglue
 
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Step 1: Take the monitor apart

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Find an old monitor that you are willing to sacrifice.
Take off the plastic frame by unscrewing all screws from the back.

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sniffrumble1 month ago

Good afternoon, you can fill with any type of lens?, Not to worry if I damage the polarized. Thank you.

as anyone tried this with other people round? What are people's reactions to the white screen and you looking with sunglasses :)

good

hex4d6174742 months ago

Will this work with all monitors?

jiffymanager2 months ago

wonderful

cgosh2 months ago

There's more than one kind of 3-D glasses in theaters, so shop around if yours don't satisfy. Polaroid-brand sunglasses (and some other brands) are polarized. You can tell if yours are polarized by putting one lens in front of another (you'll need two pairs, or pieces of polarizing material), so light passes through both before you see it. If they're both polarized lenses, spinning one of them around will make your view go light, dark, light, dark, light for a 360-degree spin. Polarized sunglasses are the ones that let you peer into the water in a lake or ocean by eliminating the surface reflections. Their neutral color is also reported to be better for your health than typical colored sunglass lenses (see John Ott, "Light, Radiation, and You").

humayunsaeed2 months ago

Good afternoon, you can fill with any type of lens?, Not to worry if I damage the polarized. Thank you.

calmlunch3 months ago

super

sheepbars3 months ago

Good afternoon, you can fill with any type of lens?, Not to worry if I damage the polarized. Thank you.

nabeel iqbal3 months ago

i made it but after remove the polarized sheet LCD view is like nagitive on three sides how to hide this

Good afternoon, you can fill with any type of lens?, Not to worry if I damage the polarized. Thank you.

clickyummy4 months ago

nice

0Troy6 months ago
Is it possible to do the reverse?

Glasses that block out everything except the computer screen?
account3r2 0Troy6 months ago

#foreveralone

0Troy account3r25 months ago

Haha! Just get distracted too easily! This way I would be able to work on the couch with my wife while she watches the TV without having the constant flickering in my vision, drawing my eyes away from the work I'm doing on my laptop.

Self control shades B)

account3r2 0Troy4 months ago

Ohhh I see :) Good idea

bearblue4 months ago

super

bearblue4 months ago

super

This looks amazing but might be a bit above my DIY level. Has anyone tried this with other people round? What are people's reactions to the white screen and you looking with sunglasses :)

MrOrsh5 months ago

I am in the middle of trying this at the moment and I have gotten as far as getting the polarized film that is attached to the anti-glare-filter off the screen. I am doing the "put in hot water"-trick to separate the two films and it works great. However getting them separate does nothing for the blurryness! Even with the completely transparent film removed and only the shadowy-one left if I move an inch away from the screen everything goes blurry.

Could it maybe be three filters joined togehter? I have tried peeling on the darker film to see if something else comes off but there seem to be no more to peel off :-/

What can be wrong?

account3r2 made it!5 months ago

Here's my result... turned out pretty well. I bought film online and the pieces I bought were just slightly smaller than my glasses frame...

IMG_20140131_181325.jpgIMG_20140131_181431.jpg
chimplost6 months ago

what kind of film is in the lenses? i want to just buy a new sheet of it.

Linear polarization film. It's somewhat expensive, and can be bought online.

account3r26 months ago

My dad got the whole film off in one piece except for a little corner piece by using a credit card and dipping it in alcohol to carefully peel off the film :) Also, this glue is VERY stubborn. I let the film soak in acetone for 15 minutes and the glare filter dissolved completely but most of the polarization filter was left, but nothing happened to the glue. It barely even softened.

Oh, and I can still kinda see stuff on the monitor while looking directly at it, and I can see everything if I look at it from an angle

As in, the image rendered on the screen.

I have found that the this method will work with just about any form of LCD screen. I purchased a $15 phone and removed the polarized screen. I rigged a pair of non-obtrusive reading glasses with a polarized piece of film from a monitor. Now I am the only one who can see my screen.

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grp8886 months ago

cool!!!

kballdy6 months ago

what kind of film is in the lenses? i want to just buy a new sheet of it.

I was hoping anyone could tell me if this kind of screen would work with this:

BenQ GL2750

I am going to test this on my old screen (a 19" screen) to get it all in my system so I know what to do.
I have read the comments and the "creator" said that it would work on any lcd screen but I have also read in the comments that some lcd screens have their "film" like almost glued on or something.
So I hoped anyone could tell me this.

It'll work on any LCD, and both that I've done it on had the films glued together and to the screen.

Can you do that with a smartphone?
No, since a smart phone doesn't have enough filter material to make a proper set of glasses.

I know this is a year late but I felt I should point out that you can just buy polarization film online that would work just fine :)

why the hell would you want to?
coyo181 year ago
I found out how to remove the polarized sheet from the anti-glare sheet if they're attached to each other. What you do is put the films that you obtained from the monitor in some hot water. Leave it in there until the water cools and the sheet should curve. Pick at one of the corners or edges until you can manage to peel off the polarized layer. Only the area that was submerged will be able to be peeled off.

I hope this is helpful
account3r2 coyo186 months ago

Wow, thanks! Will definitely try this! I just recently got a little 14" VGA monitor for $20 at a thrift store and I was planning on trying this (the Instructable) out on it when I have some spare time. Thanks for your comment!

tayl coyo187 months ago
Hey bud, just wanted to say a big thank you. I can confirm, if your polarized sheet is seemingly bonded with the anti-glare layer, microwave a mug of water for 2-3 minutes and let the cutouts soak for half an hour or so.

The two layers will separate like stickers from a sheet :)
Very cool project! I recently learned about polarizers in physics class so I asked the tech guys at my school if they had any old LCD monitors around. They handed me a beat up old laptop with no hard drive or battery, but a working screen. I cut around the edges but ended up chiseling off the film (didn't scratch surprisingly) because it was very brittle from aging. Don't worry about saving the film, you can buy polarizing plastic squares online.

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Awesome! Great work repurposing/learning from/experimenting with old/obsolete electronics!

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