Adventures in Science: How LCD Works
Ғылым және технология
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
Пікірлер: 133
2:28 that polarized sunglasses blew my mind
@shreecharan6224
3 жыл бұрын
Same for me!
@jackattack9696
3 жыл бұрын
My face 😮
@junogreant8301
3 жыл бұрын
same
@spechar
2 жыл бұрын
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.
@brienfoaboutanything9037
2 жыл бұрын
Thats amazing information about Liquid-crystal display: kzread.info/dash/bejne/oYV3kqqRctHYmdI.html
As a mad scientist, I have a compliment! Your video is very well-made successfully covering all the basics! Keep it up!
@AwesomeasimJunaid
4 жыл бұрын
Tomorrow Dương can I pls know where can I find further information on this topic ?
Dude, this is *fantastic.* Thanks for making it.
Friedrich Reinitzer was my great Uncle!
Great video, very simple and professional, keep up the good work.
LCD tech is so deep in itself
literally watched soo many videos but wasn't able to understand this but THIS VIDEO MADE THE CONCEPT CRYSTAL CLEAR....THANK YOU SO MUCH
I couldn't make enough sense out of all this just reading about it, but you made it a whole lot easier! Thank you!
You just explained to me in 9 minutes what my textbook didn't for the last year!
@lakshmansagar9624
2 жыл бұрын
True.. 😄
Great video dude. Honestly the best Lcd vid on the Tube.
Great explanation and experience. Thank you for sharing.
Great explanation and cardboard physics demo!
Oh great !!! A very clear video to understand TN panel LCDs. Can you please make one tutorial on IPS type LCD panels ???
What a great explanation. Keep up the good work.
finally my doubts are clear on lcd by watching this video. All explanations are very good
I've been looking for an explanation and saw many videos, this is the only one that I understood!
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.
Thanks for the extra explanainstion sparkfun
Finally a good video that doesn't feel like an ad for some SparkFun product! Keep it up!
Excellent video. Great presentation too.
beautiful video, thanks
The best explanation what ever I’ve watched, thank you so much
If there were all the professors like you, students will be passionate about learning Very well-made video, congrats!
Awesome video!
Great explanation. Thanks.
this video was so helpful, thank you so much!!
Amazing video, thank you so much!!!
Love the videos.
@ShawnHymel
6 жыл бұрын
Thanks! Glad you're enjoying them :)
Wonderful work Thanks
Fantastic!Big compliment!
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.
@anastasiamurawski6179
2 жыл бұрын
Sorry for getting political on ya.
@miltonm1215
2 жыл бұрын
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!
@anastasiamurawski6179
2 жыл бұрын
@@miltonm1215 Thanks and good luck to you!
This is just great, thanks.
Nice explanation !
Awesome explanation 👍
Wow. When you turned that glasses 90 degreee, i was like "wow"
Extremely useful!
Quite effective explanation. Thank
the best explanation for LCD 👍👍👍
can you do a video where you disassemble an LCD so one can see how the source relates to the individual pixels?
Great video
omg Best video i have sceen on how LCDs work thank you so much !!
My favorite property of liquid crystal displays is how it makes extra pairs of hands show up in the demonstration :P
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.
Thank you so much!
wow great video. thank you
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! 😊👍
A very nice video
*_Love The Bloopers!_*
Nice one
I saw your cardboard demo I clicked like ;)
Very good
They still work as rasterization? Like scanlines? What is a bitmap monitor?
Thank you !
I wish I could meet u once.. U r just awesome.
Whatva great expalination
Thanks, u got a new subscriber 💜
thank you
if applying voltage doesn't pass light through second filter...then why we have VDD supply in LCD???
Thanks bro
what's the difference between E-Ink and LCD no backlight needed screens?
This is the best content which i had ever seen related to this topic 💖... Thanks a lot...Well explained...😎
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
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?
I cannot believe how easy you made it to understand
I understand it so much
Nice
Im glad LED display is born. Much easier to understand than LCD's
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
but what happens during a video? How does the light move to create videos?
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?
I bhoucht a m3 band its lcd display pixel are not working
thnx
I just LOVE "advetnures"!
@ShawnHymel
6 жыл бұрын
Lol...thanks for catching that. All fixed now.
@vinny142
6 жыл бұрын
Keep up the good work my friends!
@tahsinuzzamanemon7238
4 жыл бұрын
@@ShawnHymel Do you still upload video on this channel or make video for this channel (I'm not sure. Sorry.)
@ShawnHymel
4 жыл бұрын
@@tahsinuzzamanemon7238 I do not. I have my own channel now with a few videos and links to some others that I've done.
Joke's on you, I'm watching on a CRT. Trinitron ftw ;)
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??
I'm watching this on a TN panel
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?
good ! i will be think.
haha carrot goes brrrrrrrr
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.
So to produce black colors you are basically producing more electricity.. Thus affecting battery life
Come on CompTIA, why didn't you just say that! This makes a LOT more sense! hahahaha!
Holy shit this video was so educationAl
Enjoyable
hold on doesn't the s5 use an amoled
explaining lcd displays but at 8:00 shows sn oled phone
But what is the liquid crystal made of???? I’m sure it’s not carrot juice! Why doesn’t anyone explain this?
@logat1847
2 жыл бұрын
Still have not found that out lol
lol remember indaglow watchs? im sure i spelled that wrong... how did they work?
This is crazy
my mom works there!
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
drink every time he says liquid chrystal
@balbirsingh5452
3 жыл бұрын
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
@Xtymoon
3 жыл бұрын
@@balbirsingh5452 eyo what you saying son
@Xtymoon
3 жыл бұрын
@@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
Better than Bill Nye!
@ShawnHymel
6 жыл бұрын
Hahahaha....thanks! He is definitely one of my heroes and an inspiration for the series :)
wat cud b ,, cre8 ,. functional glass , lets see wat cud connect with glass , solar power glass watch using a accid that wud charge . the element liquid crystals - or a motor? chargeing electrodes , photons ... cybers going 2 be coool ..
Alphabet! Your algorithms are so bad at predicting what I want! He said a line from Dr. Demento! I want that!
But how does pass current to millions and billions of RGB crystals saperately.
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
light does not twist bro , thats Bells inequality happening there !