TFT / LCD Monitor - How it works! (3D Animation)

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This short animation explains how LCD monitors (liquid crystal display monitors) work. LC technology is part of TFT monitors.

[@fernandoluis53]

it is insane how many pixels there are in 1080 hd screen meaning there are over 500,000 to 1 million pixels. its crazy how each voltage level is controlled in each pixel

[@jammel3653]

@@Jarran2R that is not how it is done. 1920 means there are 1,920 horizontal rows of pixels where as 1080 means 1,080 vertical rows of pixels. thats the meaning of a 1920x1080 resolution.

[@jevieyt]

Laughing at 8K TV

[@bigotmaster]

Thomas Schwenke Thank you. You answer fundamental questions of science and technology I have been asking myself in a long time without being able to find someone capable of answering these questions as lucidly, logically and clear cut as you. Crystal clear. You have indeed found your talent. Again, thank you.

[@ThomasSchwenke-knowledge]

bigotmaster Great to hear that. Thank you very much :)

[@ThomasSchwenke-knowledge]

As far as I know, this is exactly the case. The filter and adjacent parts heat up, but it seems to be the most efficient procedure when it comes to creating low cost displays.

[@Myworld86106]

Compare to those word discription this is much more easier to understand! Thank you for this! :D

[@monicazhang7657]

Thanks . I am working for selling the TFT LCD Display now and it helps me to introduce my friends to know more about this product completely.

[@eigenmishi_in_3d]

what a wonderful visual description! if you know how light polarization works, this diagram makes the technology crystal clear (no pun intended).

[@katyjones3321]

Extremely good video! A much better explanation than my lecturer could do!

[@Petrva1]

Everything is easier with images/video demo c:

[@ThomasSchwenke-knowledge]

Thank you very much for having commented on this animation. Kind regards, ehochzwei

[@JSkillz2315]

This is video is way more instructive than some of the articles I've read. Writing a report and this came very clutch.

[@carsonplaysminecraft1112]

A) My mind has been blown away. B) I love the way he explains this. C) I believe that there are some smart people out there on this "KZbin" community and this guy is one of them!

[@ThomasSchwenke-knowledge]

No problem ;) / Thank you for your comment!

[@ThomasSchwenke-knowledge]

@mydavelol Great, and thank you for your feedback. Best wishes, ehochzwei

[@ThomasSchwenke-knowledge]

You're welcome. Thanx for your comment.

[@ThomasSchwenke-knowledge]

Thank you for your feedback.

[@Joxus]

All I could think during the video was "holy hell how did screen technology even get to this stage.." It's unreal how rapidly screen technology has progressed. Actually, all technology for that matter.

[@ThomasSchwenke-knowledge]

That's it. Thank you for your comment! :)

[@ThomasSchwenke-knowledge]

In fact, that's what it's supposed to do :) Thanks for your feedback!

[@ThomasSchwenke-knowledge]

You're welcome! Thank you for your comment!

[@dannyflint706]

am I the only person that used to stare directly into on old tv to try and get their head around how you can see the sub pixel colours but when step back its coloured? the mind boggles

[@harvinderjeetsingh3739]

Nicely explained with vivid 3D animation.

[@ThomasSchwenke-knowledge]

Thank you for your great comment ;)

[@anitocat]

Thanks so much for creating this video! We are a Material Science and Engineering class doing a course project. We're reporting on AMOLED and this was really helpful for our pre-AMOLED discussion. We'd like to use this video :) We'll site you properly

[@jays951]

Your videos are very informative...!!! Excellent animation and lucid explanation...!!

[@summertimejay3157]

This is freaking amazing and so is technology!

[@squidpq]

Great animation. Great explanation. Thanks for posting this.

[@mauliksoni9626]

This video becomes very useful for my study and understanding purpose.Thank You

[@Azazl187]

Yes. I am not sure how it got in there but it 'was' in there. After looking at a few vids on how an LCD screen is made i decided to take the thing apart. After taking off the surrounding plastic i unclipped the the metal front bezel and pulled up the LCD screen itself. The bug was there dead on that white plastic film. I removed it and buffed up the small mark it left behind. I reassembled the monitor and it is now working fine without the bug. Next in line is the 42 inch LED TV that has 6!

[@AdrianReef]

I knew everything (and quite some other unspecified features) but I just love to share the wonders of these devices with my friends; it's fascinating :D

[@AICodeBytes]

awesome ... would have taken me a day to understand it from textbook ! thanx again :)

[@URazorProductions]

this video explained more than school has told me in 8 years

[@ThomasSchwenke-knowledge]

TFT is a way of creating LCD monitors, so it's as if your are asking: Which one is better, a car or a BMW? Get it?

[@ThomasSchwenke-knowledge]

No, I mean millions because it depends on the display (size).

[@ThomasSchwenke-knowledge]

Thank you, hope it helped you alot :)

[@ThomasSchwenke-knowledge]

Well, so you don't need pills to fall asleep :)

[@ThomasSchwenke-knowledge]

Thank you too :)

[@ThomasSchwenke-knowledge]

Thank you.

[@Endbringer534]

Excellent video, I finally understand how it works, thank you.

[@apurbaghosh4856]

Very helpful video. Keep creating.

[@JellyFlakexD]

I really like your videos. Keep up the good work! :)

[@hongbinbin24]

VERY GOOD EXPLAINATION. CHEERS.

[@mydavelol]

Wow this is detailed and very precise and awesome! Thanks for the info Thumbs up!

[@SiddharthMaurya7]

Nice explanation

[@abdallahnamoun5163]

Amazing stuff, thanks

[@ThomasSchwenke-knowledge]

Thank you :)

[@judgejoe2171]

Wow,,, thanks a lot... it's almost a month i'm tryin' to get what really LCD Mean,, keep it up

[@charlotteverstraete]

Thanks! Great explanation!

[@ThomasSchwenke-knowledge]

You have a bug? No way! How would it get in there?

[@SkillWill22]

Pretty ncie video. But TFT and LCD isn't the same thing. TFT is a realisation of active matrix of the LCD. I came here hoping you would explain the problematics of Thin Film Transistors. Maybe a bit misleading video name :) Thanks for the vid though...

[@ThomasSchwenke-knowledge]

Thank you. I'll try...

[@ThomasSchwenke-knowledge]

Ah, that's great. I hope it works out for you :) Best wishes, ehochzwei

[@swkim05]

Thank you for the great work. It would be great, if you post a short clip explains differences by LCD technologies, such as IPS and VA.

[@ThomasSchwenke-knowledge]

Seong-Won Kim I'll add it to the list :)

[@samhfkry]

xg vehicle NJ, and mm c Vvc g

[@NoName-yw1pt]

Very creative!

[@madhurikabudaraju1858]

Hello Thomas, i have understood the working of LCD displays, can you explain me the working of LED display devices, Thin film electroluminescent display devices, raster and random displays, will be waiting for your videos, thankyou

[@ThomasSchwenke-knowledge]

Look for RGB in Wikipedia. Should answer your question.

[@rakia66]

Thank you Thomas :) Like 90zlaya wrote, you explained 10 pages in 3 minutes :)

[@mayamasterteam]

Thank you man for these helpful videos

[@snarff33]

Understandable, have a nice day

[@copypaste3526]

I love the backgroundmusic.

[@kaamul]

nice video . . really helps in understanding the basics . . thank you...

[@noeliawehrhahn4736]

amazing stuff! Thanks!

[@ThomasSchwenke-knowledge]

Wonderful :)

[@akoloops]

Lovely picture!!!

[@ThomasSchwenke-knowledge]

Watch again! Your question doesn't make any sense at all :)

[@NoahChristensen-ev3dr]

sooo goooood

[@MAKAVELLI207]

Thanks for presentation. I now understand more

[@free_spirit1]

hold on now, when the light goes through the first polarization filter, does it mean a large portion of the light is absorbed? wouldn't that heat up the thing? and also, wouldn't it be a waste of energy?

[@asifahmedhawlader]

Thank you

[@anthonyali6593]

I don't get why you need 2 polarizers. If they are polarizing it so that they can point in 1 direction, why don't just put 1 (upper) polarizer in the direction you want and remove all the bottom polarizer and the twisted liquid crystal?

[@ThomasSchwenke-knowledge]

Hmm, seems to make sense...

[@ThomasSchwenke-knowledge]

Isn't it...?

[@MattPryze]

How is each individual subpixel receiving electricity? Tiny wires? Sounds ridiculous to me if its tiny wires

[@cuppajoesugar]

Daniel Fernandes Thank you for posting the answer, very concise!

[@rodrigomatos7686]

@ofchainsflesh3392 thanks

[@TheGiffron]

i thought that the three units of a single pixel unit make a single colour .........by the respective intensity of RBG to their respective voltage applied .... but at 2:42 the red light was black to my eyes ,well i would like to know if my eyesight is in good condition .........and by the way thanks......we will respect you for your work;-)

[@ThomasSchwenke-knowledge]

Pixels don't know. Your computer/graphics card know!

[@KR-fy3ls]

Great video, maybe you could answer a question for me. I can't seem to find an answer and all the 3d representations seem to have different amounts. I'm wondering, how many crystals to a pixel? Is it a fixed amount per sub-pixel or does it vary?

[@ThomasSchwenke-knowledge]

What do you mean by crystal?

[@KR-fy3ls]

The crystals the are used to block light/let light pass through based on if they are twisted or not. Not sure what the name for them is sorry.

[@ManuelTijerino]

I was wondering if the color filter can change to any color say black or white, then why not just bypass the crystals, and always let light through?

[@KamranQaderi]

The variable voltage is applied to the crystal. The color filters are fixed and nothing changes on the filters.

[@maxguichard4337]

Yes, this is explained poorly, instead of having 1 big crystal section for each pixel and 3 pixel filters that are adjusted, there are actually three crystal sections. These sections sit behind the filters, which are just normal filters you might use in science class, and change the direction of the light to change the intensity of it in each section of the pixel. Thus changing the intensity of each colour. Hope this is helpful! :D

[@antonyprasad5536]

Those sub-pixels (RGB) are driven by TFT plane...

[@unknownuser5260]

I still have questions, why those rays needed to be twisted? Why they wouldn't pass through that way?

[@Ghost572]

I can tell this video is well done but I can't hear what the guy is saying properly at times, might be better to assist it with some text aswell.

[@ogulcanakkoc5014]

why the song man why? I am here to listen to you not the music in the background. Anyway thanks for the video and great explanation.

[@heshammansy1585]

nice work thank you :)

[@ThuyPham-gf3ez]

amazing

[@qanatuka]

thank you.

[@keepingtouch1210]

Great, thank you

[@martinnachkov6009]

good job!

[@mbrelectronics]

Thank u so much

[@jaspreetssingh3309]

great thank you

[@ThomasSchwenke-knowledge]

Hehe, good job :)

[@richardlau898]

this is very helpful!

[@quantummandavid]

Im having trouble hearing you and my headphones are at full blast.

[@ThomasSchwenke-knowledge]

David espinoza Hmm, cleaning your ears might help in this situation! :)

[@quantummandavid]

My ears are good son. You just suck at voiceovers or did not even edit your audio at all you probably recorded once and just uploaded. I was trying to politely say maybe next time try to increase your recording volume but it turns out your a douchebag and cannot take constructive criticism. Good luck with everything despite your behavior I wish you the best.

[@ThomasSchwenke-knowledge]

Hi, ok, thank you for your feedback. I'll keep it in mind :)

[@PhilipAStrong]

Thomas Schwenke Sound is fine for me.

[@ThomasSchwenke-knowledge]

Great to hear that :)

[@rickyao1101]

When you apply a voltage across the LCs, should those LCs orient parallel with the electric field instead orient horizontally?

[@ClassicWillL]

Thank you for making this video, it's extremely informative.

[@FutureAIDev2015]

How can an LCD be made transparent for integration into the lenses of a pair of glasses?

[@akashjain35]

3:06 ... now I understand what it is in my TV

[@st1234yuxiang]

Can someone explain to me the following please?: 1. Why is it called 'polarizing light', what is the difference and significance from normal light? Why must the liquid crystals twist 90degrees? I don't really get that part. Thanks a lot in advance to any kind soul willing to help me out!

[@salmansiraj94]

I wanted to know if you can explain the relationship of the electric field and the liquid crystals?

[@timconka1865]

The liquid crystal is what's called an optically active substance. This is a substance that rotates a light's plane of polarization (that is the way it oscillates) without cutting down on intensity - a normal polarizing filter would cut on the light's intensity. In the case of liquid crystals the voltage (or potential difference as it's sometimes referred to) determines how the plane of polarisation of light is rotated. That means we can adjust the plane of polarization of the light going through the crystal by adjusting the voltage. Hope this helps

[@lordjared]

Ok why are there red blue and green lights? should it not be comprised of red blue and yellow lights? how does a screen project pure yellow?

[@abhisheksarkar4897]

Sir I have a question please reply- Does this explanetion use CCFL for backlighting coz, modern TFT LCD display use different technology?

[@890slay]

Thanks, now I understand almost nothing more after watching this.

[@2degucitas]

Turn on the cc. It appears Justin makes this work by blocking the hooter.

[@SevenDeMagnus]

They still work as rasterization? Like scanlines? What is a bitmap monitor?

[@Bmxmusikian]

This is completely different to another i just watched. Also...why have the light go through 1 polarisation to make it verticle and then rotate it 90o? Why not just filter it that way in the first place?

[@ThomasSchwenke-knowledge]

+Rich Williams Watch again!

[@Bmxmusikian]

+Thomas Schwenke yeah I have lol, it polarises then goes back again so its like it was in the first place

[@Bmxmusikian]

+Thomas Schwenke Oooh i get it now! lol, so its completely black untill power is applied to the chrystal, the backlight is always on. Yes I do apologise, must have been tired lol! So interesting....so this is why led is so efficient. Have u seen those polarised glasses u can make? The screen is white and only you can see whats on the screen

[@Pub_btw]

I doubt the light is always on. When you turn on the power to the LCD display the light turns on. The electric current is applied to specific sub pixels of the RGB pixel so that you see a specific color. Basically each red green or blue sub pixel has a specific voltage to give off a different intensity of that color light which gives a certain color. Watch 2:25 to 2:50 again.

[@timconka1865]

It's so the intensity of the light emerging from the screen can be controlled. If we polarized the light in the first place, It would all go through and there would be no way of controlling the intensity other than that of rotating the polarizing filter itself, which is impractical if you think how tiny a sub-pixel is.