Removing the polarizer from an LCD screen

So I wanted to build an SLA LCD 3d printer. I've found this great 12" 4K monitor with a control board (product id NV125QUM-N81) but the polarizers are very aggressive and cut off all the UV light, so I tried to remove both polarizers hoping to find a replacement somewhere (any suggestion?).
I don't know how... but I've been successful in this very delicate endeavor and since I documented the whole process I wanted to share it with you. Please bear in mind that I'm no expert, there's probably a better way of doing it but this is what worked for me!
Cheers!
You can find me at matt3o.com
Background music: "Robobozo" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
creativecommons...

[@febojarlock9469]

Awesome tutorial. One question, is it possible to detach the TFT matrix panel from the LCD and RGB color filter matrix? maybe using a heat gun or any chemical. I need to work with the TFT panel for a project. Thank you!

[@BacnDev]

No

[@dandumit]

Nice ! Please tell us this is stillworking after polarizer removal ? can you see something on display ?

[@matt3o]

Yes, the screen still works. I tested it by applying two spare polarizers and backlighting with a LED torch :) Everything is still there!

[@vijay1700]

Hi, will the monitor display normally if we remove the sticker-type black film behind the front LCD panel? My monitor's film has shaded and there is some kind of white ghost coating where this film has shaded out it's color.

[@marisahs1824]

great .:) we are professional 3D glasses factory, we can produce the 3d glasses for you.

[@MegaShot12]

Any updates on this? I'm really interested in making a 3D printer myself! ^^

[@krisea3807]

Is that the polarized film used in LCD TV Screen same as in LCD Laptop and LCD computer monitors?

[@royjao1738]

Technically yes, except each size have different polarizer design

[@dancook6322]

Awesome video! And awesome find on that particular screen... good luck finding an alternate polarizer.

[@phuocbolip]

Where to buy polarizer Cstn mode. Lcd code KCB104VG2CA-A43

[@JusNTru10565]

😅😂OMG THIS WORKS!!!! I JUST USED MY SCRUBY FROM MY SHOWER IT HAS A SUCKER CUP ON THE ROPE AND I SUCKED THE ANT FLY OUT WITH IT, 😂LOL WELL IT PULLS THE SCREEN OVER IT AND ITS WEIRD but it works idk where the bug go's but fuck that thing 😮😂

[@seditt5146]

I have tried this shit dozens of times and every time all I get is broken glass and small fragments of film. What screens are these people using because it's insane to see people constantly pulling these off with no problem yet heat, solvents you name it simply results is headaches and little else

[@starmann65]

I would like to renew the Polarizer film on my 27 "Asus PG278Q, now I have seen that there are three versions, once with 0 degrees / once with 45 degrees and once with 90 degrees. What do the various degrees numbers mean, can I use all of these polarizer films, or do I need a certain degree number for my monitor? Thank you in advance!

[@Justlegos]

Did you ever find a proper polarizer for your SLA printer? My Elegoo Saturn printer has a scratch on it which is causing failed prints. I believe it's just the polarizer that's damaged, so I was wondering what spec of polarizer I could replace.

[@LumpyCompany]

I done this, following your tutorial exactly and now my £500 monitor does not work at all 🙂 Thanks!

[@christopherschiefer4026]

what did you expect? The polarizer is needed to display the image.

[@nareshjethwa]

From where I can get polarising film?

[@majkstone8033]

Where to buy polarized sticker film?

[@fury3600]

where can i find replacement polarizerd film

[@johndee9622]

eBay it... babie.

[@johndee9622]

@@CaptainMyCaptain33 yessir,re-bob

[@KirballsKeys]

Googled how to remove a polarizer and just realized when I was sharing the video with someone who's video this way LUL.

[@molambo]

There is no way to take advantage of this for a burned out multimeter screen? How to glue?

[@cayazigi]

Ok. But how can we put the new polarizer ?

[@royjao1738]

You need to clean the surface then affix a new polarizer film

[@nonnyyahya3218]

May i know where do you get new polarize?

[@MrFox1eni]

15BHAN12.1?

[@hiteshgajjar6953]

Sir. Wanna repaired my GPS QVGA Display which types of polarization film should be used?

[@Pitoy2]

your video is to dark, put a brighter light so we can see everything in your video tutorial

[@zyos11]

Hey have some sort of plastic cover on the screen of my Sony Bravia 2015 model, it turns out that some ugly lines appeared on my tv and it was that plastic, I'm removing the plastic now and it seems that it has no effect in the image but a really strong smell is coming out, it smells like burned plastic or something. Is it dangerous or do you guys know anything about it?

[@kaanmehmetaksoy1558]

which driver board do you use for this lcd? and what is the status of SLA project now?

[@matt3o]

control board is in the video description! I'm having some troubles with the polarizers, but it kinda-sorta works :)

[@royjao1738]

Driver board differ from each resolution, but basically it can work across the board

[@rychei5393]

Have you begun work on the sla printer?

[@BuckSwashler]

Why do all you lcd sla builders go dark mid 2017? Are you being intimidated by men in black? Has big oil/tobacco bought you out? Will i disappear if i invent a resin printer too?

[@enricomasella998]

Ahahah, nice point Dude! I've asked me the same questioN!

[@TeReSaAsErEhT]

When it is needed to remouver polarized film? For to fix a problem of the brightness?

[@royjao1738]

Brightness problem is not related to polarizer, but more with the backlight, backlight are designed to have 12 thousands hours of life

[@TeReSaAsErEhT]

@@royjao1738 it's not fixable but only to change the lcd fixes the problem the ghost and brightness ? No to solder?

[@GoofyGufz]

hi what is that layer called the one at 4:38 that reflective and some board connected to it? that the one that produce image right? i want to make like ibuypower's pc case side windows. or can you supply with with that layer? i want to make my own products and sell it but i can't do it myself as my hand aren't steady and i don't have the patient to do that.

[@matt3o]

that would be the LCD itself, yes

[@royjao1738]

The glass surface of the LCD, there are two model available in the market, one that is glossy, the other matte

[@nickpeh1066]

Share with us, which angle nof polariser u using for repair?

[@matt3o]

I believe they were 90deg, but I recently converted to monochrome screens that are much better.

[@nickpeh1066]

@@matt3o oh ok, I saw aliexpress stating front screen as zero angle, so actually is back.

[@NiMareQ]

This is amazing!

[@nebben5469]

anyone know where can i buy this polarizer ?

[@cerinabraham9368]

Hi, From where did you buy the uv grade polarizer, please help us. My brother and there friends doing collage project on LCD 3d printer.It's great help if you share the details.

[@matt3o]

I tried many polarizers, some actually works but the contrast is not stellar so I'm still looking. You can find some in China, just be sure the thickness is under 0.1mm

[@SF-fb6lv]

1:30 is kind of interesting; you (working on a computer) could wear polarizing glasses, and everyone else in the room (without polarizing glasses) wouldn't be able to see what is displayed on your screen!

[@bg2219]

that is exactly why i was looking for a video on hoe to remove polirized screen from lcd panels

[@AlaskaAcesPBA]

​@@bg2219 same!

[@augustindavidkouaplack9731]

great jop my dear

[@janwiersma1449]

how far are you with your DLP printer (not SLA) have you found a polariser that functioned but not blocks UV too much?

[@Soni_Laoly]

are polarizer all same??? i have macbook retina with damage back polarizer, i found in online store just for led tv polarizer.., if i cut that polarizer into my macbook, is it same?? will it affected the resolution?

[@m.i.qurashi2456]

Don't know about the resolution, but all the polarizers are same.

[@royjao1738]

Resolution are embedded on the glass itself, polarizer are additional film added

[@cauesomenzi]

Thank you for the tutorial and explanations. So helpful.

[@cauesomenzi]

Could you indicate a UV friendly polarizer? Thanks

[@BonnieLeah]

what is the purpose in this procedure??? looks like a waste of time to me...

[@karloshebron7614]

This is an old comment, I know. But sometimes the glue that holds the polarizer in place would start to degrade and "bubble up" and you're gonna want to replace the film instead of buying a new monitor.

[@ReubenMRU]

@@karloshebron7614 which is just what happened to my 13 yr old viewsonic - which is what led me here - wonder if it's worth changing it... or if that's gonna cost as much as getting a new monitor XD (which i already got anyway XD) facebook.com/SuperReubs/posts/10157343081347407