Adventures in Science: How LCD Works
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- Опубликовано: 14 июл 2024
- Liquid crystal display (LCD) is a popular flat-panel display technology found in many TVs, computer monitors, smartphones, and tablets. The development of the LCD started with Friedrich Reinitzer experimenting with carrots in the 1880s and discovering that some chemicals can exhibit a “liquid crystal” state.
RCA produced the first LCD in 1967, but it didn’t become really usable until scientists in Switzerland figured out how to manipulate the twisted nematic (TN) structure of liquid crystal with electricity.
Today, LCDs rely on one of three different types of backlights: reflective, transmissive, and transflective. Most LCDs are transmissive, but reflective screens are still popular in things like calculators. Transflective screens have a backlight but can also be viewed in ambient light. They are, however, expensive and can lose some contrast.
SparkFun’s LCDs: www.sparkfun.com/categories/76 
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2:28 that polarized sunglasses blew my mind
Same for me!
My face 😮
same
You want mind blowing, try putting on polarized sunglasses while watching LCD display and tilt your head 90 degrees. This is why pilots don't (usually) use polarized sunglassed. The displays in the cockpit are LCD's and the sunglasses may sometimes hinder their ability to see them.
Thats amazing information about Liquid-crystal display: ruclips.net/video/oQC0HXBnrio/видео.html
As a mad scientist, I have a compliment! Your video is very well-made successfully covering all the basics! Keep it up!
Tomorrow Dương can I pls know where can I find further information on this topic ?
Dude, this is *fantastic.* Thanks for making it.
LCD tech is so deep in itself
You just explained to me in 9 minutes what my textbook didn't for the last year!
True.. 😄
Friedrich Reinitzer was my great Uncle!
literally watched soo many videos but wasn't able to understand this but THIS VIDEO MADE THE CONCEPT CRYSTAL CLEAR....THANK YOU SO MUCH
Great explanation and cardboard physics demo!
Great video, very simple and professional, keep up the good work.
Omg thank you so much, you explain this topic so well, so far I have only found complicated explanations about TN LCDs, but your video is easy to understand and makes important points! Thank you.
I used to work for a company that made LCD's and it was the best job I ever had, because I am a nerd and found fun and interesting. Unfortunately the place went under or rather over seas (the plant closed and was moved to Japan) , a lot of people lost their jobs, What a shame. But people don't want to spend big bucks for products with LCD 's , we 'Mericans want to go to Walmart and and buy a super sized TV for cheap . We weren't that advanced, we only made small glass displays for things like gas station pumps , but still it very interesting to learn the science behind how they work. Thanks for the video. I'm an artist and I've always thought about how LCD's might be used to make some kind of art. It's working with color and light, which nerdy artists like me just love to play with.
Sorry for getting political on ya.
Very well said lol indeed it is like working with art. Im about to start an internship at this LCD company and im very excited to learn and adapt to everything that comes within the job!
@@miltonm1215 Thanks and good luck to you!
Great video dude. Honestly the best Lcd vid on the Tube.
I couldn't make enough sense out of all this just reading about it, but you made it a whole lot easier! Thank you!
finally my doubts are clear on lcd by watching this video. All explanations are very good
Great explanation and experience. Thank you for sharing.
I've been looking for an explanation and saw many videos, this is the only one that I understood!
The best explanation what ever I’ve watched, thank you so much
Finally a good video that doesn't feel like an ad for some SparkFun product! Keep it up!
What a great explanation. Keep up the good work.
Thanks for the extra explanainstion sparkfun
Fantastic!Big compliment!
If there were all the professors like you, students will be passionate about learning
Very well-made video, congrats!
Amazing video, thank you so much!!!
beautiful video, thanks
*_Love The Bloopers!_*
Oh great !!! A very clear video to understand TN panel LCDs. Can you please make one tutorial on IPS type LCD panels ???
this video was so helpful, thank you so much!!
Wow. When you turned that glasses 90 degreee, i was like "wow"
Excellent video. Great presentation too.
Awesome video!
This is just great, thanks.
omg Best video i have sceen on how LCDs work thank you so much !!
Extremely useful!
Wonderful work
Thanks
Great explanation. Thanks.
Great video
Love the videos.
Thanks! Glad you're enjoying them :)
Great video!! it's much easier to understand ❤ thx so much
the best explanation for LCD 👍👍👍
Nice explanation !
Awesome explanation 👍
wow great video. thank you
Quite effective explanation. Thank
can you do a video where you disassemble an LCD so one can see how the source relates to the individual pixels?
Thank you so much!
Awesome display of light's polarization! (display? See what i did there? 😁) No, really. I've never seen such a graspable demonstration of that phenomenon! Keep up the work, SparkFun! 😊👍
Note that your mockup of the TN voltage on state is incorrect. The LC directors orient toward the electrodes, breaking the twist. What you depicted was a sort of in-plane switch. TN LC is positive dielectric anisotropic, so you would have to move the ends of the LC toward the polarizer, sort of like a fallen stack of books.
Thanks, u got a new subscriber 💜
A very nice video
Nice one
Very good
I saw your cardboard demo I clicked like ;)
OH my goodness, the tasty info was so informative i had a braingasim, thanks a bunch for this, I am now subscribed.
im genuinely always happy to learn new stuff that i had no idea about, you you hit that spot just right, lmao.
Note that virtually any LCD you use does not use twisted nematic. It is likely to be In-Plane Switching, which was made by Hitachi in 1988.
Thank you !
My favorite property of liquid crystal displays is how it makes extra pairs of hands show up in the demonstration :P
Whatva great expalination
I wish I could meet u once.. U r just awesome.
thank you
Im glad LED display is born. Much easier to understand than LCD's
Thanks bro
I understand it so much
I cannot believe how easy you made it to understand
Nice
I just LOVE "advetnures"!
Lol...thanks for catching that. All fixed now.
Keep up the good work my friends!
@@ShawnHymel Do you still upload video on this channel or make video for this channel (I'm not sure. Sorry.)
@@tahsinuzzamanemon7238 I do not. I have my own channel now with a few videos and links to some others that I've done.
This is the best content which i had ever seen related to this topic 💖... Thanks a lot...Well explained...😎
Joke's on you, I'm watching on a CRT.
Trinitron ftw ;)
They still work as rasterization? Like scanlines? What is a bitmap monitor?
Come on CompTIA, why didn't you just say that! This makes a LOT more sense! hahahaha!
There's a 60 year old film that described how analog television worked. (It was new at the time.)
This is close to describing how the digital TV of today works but isn't kid oriented.
Has anyone done *that* yet?
haha carrot goes brrrrrrrr
what's the difference between E-Ink and LCD no backlight needed screens?
I was wondering how LCD works and made a guess before watching, then watched.
My guess was that the light shone on the crystals basically on the side that would produce the colour needed from red,green,blue.
I was wrong, but the concept was close lok
if applying voltage doesn't pass light through second filter...then why we have VDD supply in LCD???
good ! i will be think.
thnx
why are we using a liquid crystal layer any way if the aim is to get the stop the inverted wavelength by the front polorizer , could we just use 2 different polorizer and block do the same
What's the point in having the second polarized filter if you can just remove it and have the same light luminate the panel image?
but what happens during a video? How does the light move to create videos?
Holy shit this video was so educationAl
Enjoyable
I bhoucht a m3 band its lcd display pixel are not working
I'm watching this on a TN panel
How does a signal representing a particular pixel value that is addressed to a particular pixel makes its way from the chip that is receiving the video signal all the way out to the individual pixel? When there are millions of pixels? There can't possibly be millions of individual wires?
So to produce black colors you are basically producing more electricity.. Thus affecting battery life
The cellular phone is a 3D gadget even the LCD display is a 3D material since the display has many electronic layers in order to be functional.
But what is the liquid crystal made of???? I’m sure it’s not carrot juice! Why doesn’t anyone explain this?
Still have not found that out lol
But if when you apply voltage light doesn't pass through, then hkw is an image produced on the screen....that doesnt make sense..unkess there is a ckunterscting voltage but steady current..anyone else wondering??
explaining lcd displays but at 8:00 shows sn oled phone
This is crazy
hold on doesn't the s5 use an amoled
And how each pixel is programmed ? What kind of computer code/language is used ? How it's all coded in radio waves and decoded to digital and translated ? How it's builded in a factory ? Where the liquid crystal are extracted ? So many questions.... I might start to have a panic attack by not accepting my extremely finite form of life incapaple of learning everything that I want ....LOL
hi shawn
my mom works there!
drink every time he says liquid chrystal
hamara mor mor khatam khatam ho gaya hamare pass paise nahin hai to ham aap hamen bataiye ham phone mein se hi use applying karenge aap bata sakte hain Pizza apps images and
@@balbirsingh5452 eyo what you saying son
@@balbirsingh5452
Our peacock peacock is over, we do not have any money, so we tell you, we will be applying it from the phone itself, you can tell Pizza apps images and
lol remember indaglow watchs? im sure i spelled that wrong... how did they work?
Better than Bill Nye!
Hahahaha....thanks! He is definitely one of my heroes and an inspiration for the series :)
But how does pass current to millions and billions of RGB crystals saperately.
Alphabet! Your algorithms are so bad at predicting what I want! He said a line from Dr. Demento! I want that!
i regret that i have only one like to give
im watching a video about how the thing im looking at works on the thing im working at