Why it's So Hard to Make a Homemade LCD Screen? 

Nice work! I'm really glad you were able to make your own diy LCD. Was the problem with the initial build the power supply (DC vs AC) or something else?

I’m really glad to see this! We did this back in 2010 in college with very little info! before we figured out using a thin coating over ITO slides we tried to use tape, glass, plastic wrap, two slides, 10Kv through a full slide etc! Finally we figured it out using thinned clear nail polish! Ours was trash tho because we didn’t think about a spin coater! But it’s really awesome to start from nearly scratch and figure things out yourself this was one of the most rewarding projects I have ever been apart of! We even won a contest at a conference!

As a kid growing up in the 80's I can't tell you how many LCD screens I pulled apart trying to see how they worked, but the only thing I discovered was how mad my dad got when I pulled his favourite lcd calculator apart. 😂

Many thanks for the hint on that DIY centrifuge. Simple and practical!

Never have I ever thought of this question but now I want to know the answer😂 Also huge hit of nostalgia from the Nokia 3310 asteroid

I thought it said “Homemade LSD cost” My bad, carry on.

Fascinating video !! and consummately satisfying !! You teach me something interesting every time...thank you. im starting to feel chemistry is as mind bending as physics and more, and now i must know more of it,and you do such a great job showing it in its full glory , from all angles, clear back to who discovered it. the how and the why of things is so important to me!!!

Fantastic video! This sort of video is why I love chemistry so much. Beyond the theory and applying it to something interesting and useful everyone can relate to (maybe of a certain age in regards to that particular phone) but as a kid I loved pressing hard on the LCD screen wondering what it was. So this made it clear as well learning well beyond. Thank you!! Спасибо!!

I still have one of those Nokias in my personal museum. Last month I've tested it and its battery still accepts charge. And yes, I played the Snake!

I really love diy electronic components! You help to demystify the otherwise opaque world around us. Thank you so much.

Thank you for your content! Greetings from Bulgaria!

7:00 shout out to Ben from Applied Science, he’s a rockstar!

Great job man!!i asked myself for all my school time how polarized sheet and lcd work in calculators, i disassembled many calculators just for fun and i never understood how theese work, till now. Thank you a lot!

Only scientists like you provide most accurate and useful information, thanks for your efforts.

Thank you for sharing your knowledge - love from the UK!

Very useful to learn such detailed notes of science that otherwise seems to be a secret. Also, I give you my appreciation for finding an MIT document in this topic, I have never thought that was possible. Best regard.

Exceptional. These efforts of presentation and explanation are highly appreciated.

Amazing! Great job and spectacular results :)

Great in depth details on the evolution of the LCD! 🙂

Cool. Have you thought of doing a video explaining LEL and HEL of petroleum? Through these experiments you could calculate how much fuel is required in a engine cylinder and calculate/ show the efficiency of engines - why they are so inefficient.

Great video as usual!

Very cool! Thanks for the great content!

Very nice man. This is awesome.

Very interesting! Thank you.

Amazing presentation, congratulations! Also love your home made centrifuge :D

Gordon Freeman did indeed graduate from MIT. He's a pretty big deal these days.

You're a great educator. Thanks for your contribution to science.

I never understood how these types of displays worked until I watched this XD Thx for satisfying my brain :>

Good choice of chems 👍 I love doing experiments with Sigma stuff 😋 always reliable for good experimental results. Greetings from Germany 🇩🇪

Your projects are going crazy!

I now know why when the screen breaks it get filled with black liquid. This is the best video you have ever made and most valuable video on YT. ☝️😌

I like the DIY centrifuge!!! .........and the rest of the video! Nicely done! & the 1/2 life ref# @ 13:17....that took a second to hit me!

Wish they were more like you you are one of a kind.

Congratulations! Your video is fantastic! I really wonder how do they physically wire so many pixels on screens without actually using wires. I have taken apart monitors but haven't seen cables at all. I guess they somehow multiplex the output for all these pixels nowadays? Must be a nightmare...!

Amazing video! Thumbs up!

Excellent video, I really enjoyed that. I was born before they came out and now look at them and other technology. The snow ball has started rolling… =]

Amazing, good show!

It's really cool how you do these in more than one language.

I'm always learning from u🤗

A good knowledge shareing. Good luck

I don't know about science but this is awsome! You are the good scientist! From Indonesia!

That was really AWESOME

Thank you, great video

This reminds me of algebra in school. The variance between this pixel and the screen on my phone that I am watching the pixel on, is like what you learn in algebra class compared to the test.

Respect brother, greetings from Tanzania

Hail to THE CHEMIST KING! Love your videos!

Great video!

Keep up the good work. One day everything could be made at home

Remarkable for a DIY setup !

glad to see no bs videos, very neat

Hmm, looking at 16:48, it appears that as the LCs align (at the rise of the square wave) they not only cause the liquid to move, but they also push the glass panes, forcing them to flex. The relaxation of this flex then pushes back onto the LCs, disrupting their order; it's only the fast rise of the square wave that triggers enough impulse to overcome the pressure of the glass. Rocky Robinson below points out that, in the industry, they use glass beads to force separation between the panes of glass. This would reduce/eliminate any constant, uneven pressure on the LCs, and the tension in the glass would be eliminated. It'd be interesting to see if this could be described with an altered Ising lattice model. There would be three factors: Temperature, pressure, and applied voltage, where the latter has uneven splotches, like a smooth Voronoi pattern. Higher temperatures and steep pressure gradients would cause the individual crystals to stray from the alignment induced by the voltage (randomly). Maybe I'll throw this together sometime this week and see what kind of patterns arise as a result :D

It works!! Bravo!!

nice vid dude!

the 1 phone that never breaks

fascinating!

Awesome bro 👍👍👍👍👍👍

T.Y. for describing such specialised field of application. And by the way - Applied Science has entered the chat 👍

Really nice.

Loved the DIY centrifuge.

Could you imagine "Cruelty Free, Italian Made, Hand Crafted LCD"

congratulations!!

nice you recovered your channel

So glad to see you back online!

im glad this alien has decided to teach us the secrets of the universe.

Power supply should run -6V to +6V because a DC bias from 0V will allow ion transport. Place tape over the indium tin oxide where the electric signal is (alligator clips) before the polymer spin coat and remove after buffing so the ITO makes a good contact. Super glue and many other glues with catalysts and accelerators for cross-linking polymers contaminates liquid crystals with ions so try thermoset or thermoplastic adhesives. Liquid crystal should be free of oxygen, water and salts for best performance. Liquid crystal is also more expensive than gold by weight, as you noticed. Liked your video! Thank you.

IPhone 11: Falls on the floor screen breaks! Nokia 3310: Falls on floor breaks floor!

OOOOOOOO!!! Perfect Privacy Screen! Strip off the top polarize layer as shown, then only someone with Polarized Glasses can view the Display! You're a Genius!

Awesome you are the best

Good job.

Dude you are the best

I'm thinking you could knock the cost down by omitting the dedicated frequency generator and instead drive the display using an oldschool 555 oscillator fed into a simple amplifier, maybe with an extra comparator or two thrown in to make the signal transitions faster. You could similarly use a computer's sound card as the signal source for the ~20Hz to ~22KHz range, and feed that into your amplifier to get your desired voltage.

Remembered about crystals when readig my old IT book yesterday. Today I see this!!!!!😆😆😆😆👍

Wow, the engineering behind making an LCD is actually pretty neat :D Now make a multichrome one!

finally, an LCD screen where the resolution, refresh rate, response time, and colour depth can all be measured as 1. The "perfect" display 😄

Would love to see a gameboy screen at that scale.

Thanks , Ma friend!

I'd like to thank you for picking up the slack of Canada's science education system and teaching me something new today.

Interesting!

beautiful

This guy is a living genius.

I am glad Thoisoi got his acc back. And came with amazing experiment too! Great!

Great !

13:14 I love how the most famous scientist to graduate from MIT is Gordon Freeman.

Awesome. I like your English accent

Awesome display

A half life reference? Stellar.

I'mma make my own comically large calculator

Nice to see you back online, explaining science, to students. Much appreciated - I trust your videos will start an enquiring mind or two, to explore chemistry & it's related fields, and generate, a 'new to science' application. Namaste 🙏 💟

13:10 was the most profound, he has ever got. It was interesting to see a demo over how crystal screens became obsolete. LED, is already a nuiesence, we tried creating a non-optical screen, which only a night light would've required in dark, it looked like a color glossy prescription magazine, that animated like a video, too many of the expense and material got damaged or lost before illustrated. Could've been a power saver and no optic burdon revolution. Perhaps this host could try.

That's really cool but that's only one pixel can you imagine how to get those so small and still get them individually wired up without seeing the wire that's the trick especially on the new ones nowadays they've got thousands of pixels on a TV

Most LCD screens are IPS panels nowadays, but there are other kinds, for instance TN or VA.

My Nokia cellphone still works too! I remember what an advanced electronic device it was at that time .

1:25 Seeing the Google+ logo made me feel so nostalgic

Everyone: glue Thoisoi: zzhhglue kha kha khaaaa ;)

8:50 worlds best centrifuge 🤣

Nice antique phone! Still works? Huzzah!

Super!

I wish there was a modern phone with a display that uses the old monochrome LCD technology. I often work in bright sunlight and modern colour displays are unreadable. The old LCD screens can be seen in any lighting conditions and as a bonus, they don't need backlighting and they use far less power.

where in the heck did you get a signal generator and end up with a 300 eur bill? also, like some other guy already said...the centrifuge is a really nice and effective looking DIY solution. many thanks, if i ever need one!

I am here after my chemistry teacher, i can learn many things about elements in this channel.