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

  • @eo9839
    @eo98394 жыл бұрын

    2:28 that polarized sunglasses blew my mind

  • @shreecharan6224

    @shreecharan6224

    3 жыл бұрын

    Same for me!

  • @jackattack9696

    @jackattack9696

    3 жыл бұрын

    My face 😮

  • @junogreant8301

    @junogreant8301

    3 жыл бұрын

    same

  • @spechar

    @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

    @brienfoaboutanything9037

    2 жыл бұрын

    Thats amazing information about Liquid-crystal display: kzread.info/dash/bejne/oYV3kqqRctHYmdI.html

  • @tomorrowduong4914
    @tomorrowduong49145 жыл бұрын

    As a mad scientist, I have a compliment! Your video is very well-made successfully covering all the basics! Keep it up!

  • @AwesomeasimJunaid

    @AwesomeasimJunaid

    4 жыл бұрын

    Tomorrow Dương can I pls know where can I find further information on this topic ?

  • @TeagueChrystie
    @TeagueChrystie6 жыл бұрын

    Dude, this is *fantastic.* Thanks for making it.

  • @hmsereinitzer
    @hmsereinitzer3 жыл бұрын

    Friedrich Reinitzer was my great Uncle!

  • @MrJesussinep
    @MrJesussinep5 жыл бұрын

    Great video, very simple and professional, keep up the good work.

  • @ri5hipat
    @ri5hipat4 жыл бұрын

    LCD tech is so deep in itself

  • @Ash-ec4ip
    @Ash-ec4ip2 жыл бұрын

    literally watched soo many videos but wasn't able to understand this but THIS VIDEO MADE THE CONCEPT CRYSTAL CLEAR....THANK YOU SO MUCH

  • @aolien2739
    @aolien27393 жыл бұрын

    I couldn't make enough sense out of all this just reading about it, but you made it a whole lot easier! Thank you!

  • @jamespocock839
    @jamespocock8395 жыл бұрын

    You just explained to me in 9 minutes what my textbook didn't for the last year!

  • @lakshmansagar9624

    @lakshmansagar9624

    2 жыл бұрын

    True.. 😄

  • @Windsorsillest
    @Windsorsillest5 жыл бұрын

    Great video dude. Honestly the best Lcd vid on the Tube.

  • @drHatim-bt1eu
    @drHatim-bt1eu2 жыл бұрын

    Great explanation and experience. Thank you for sharing.

  • @timb1986
    @timb19866 жыл бұрын

    Great explanation and cardboard physics demo!

  • @jawadtahmeed9854
    @jawadtahmeed98545 жыл бұрын

    Oh great !!! A very clear video to understand TN panel LCDs. Can you please make one tutorial on IPS type LCD panels ???

  • @almosh3271
    @almosh32713 жыл бұрын

    What a great explanation. Keep up the good work.

  • @shivarajput9942
    @shivarajput99424 жыл бұрын

    finally my doubts are clear on lcd by watching this video. All explanations are very good

  • @ouzaloid
    @ouzaloid3 жыл бұрын

    I've been looking for an explanation and saw many videos, this is the only one that I understood!

  • @richardbohunovsky2404
    @richardbohunovsky24049 күн бұрын

    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.

  • @AtAGlimpse_UB
    @AtAGlimpse_UB3 жыл бұрын

    Thanks for the extra explanainstion sparkfun

  • @anlumo1
    @anlumo16 жыл бұрын

    Finally a good video that doesn't feel like an ad for some SparkFun product! Keep it up!

  • @Simon_Rafferty
    @Simon_Rafferty2 жыл бұрын

    Excellent video. Great presentation too.

  • @sooryanarayanan4273
    @sooryanarayanan42732 жыл бұрын

    beautiful video, thanks

  • @huuchinhnguyen5808
    @huuchinhnguyen5808 Жыл бұрын

    The best explanation what ever I’ve watched, thank you so much

  • @ANTONIONICOARA
    @ANTONIONICOARA5 ай бұрын

    If there were all the professors like you, students will be passionate about learning Very well-made video, congrats!

  • @AndrewCodeDev
    @AndrewCodeDev4 жыл бұрын

    Awesome video!

  • @docflash1
    @docflash12 жыл бұрын

    Great explanation. Thanks.

  • @MarieEthvignot
    @MarieEthvignot Жыл бұрын

    this video was so helpful, thank you so much!!

  • @he.lena21
    @he.lena21 Жыл бұрын

    Amazing video, thank you so much!!!

  • @spkrman15
    @spkrman156 жыл бұрын

    Love the videos.

  • @ShawnHymel

    @ShawnHymel

    6 жыл бұрын

    Thanks! Glad you're enjoying them :)

  • @hanyelbanna3673
    @hanyelbanna36732 жыл бұрын

    Wonderful work Thanks

  • @YFTOUCH
    @YFTOUCH Жыл бұрын

    Fantastic!Big compliment!

  • @anastasiamurawski6179
    @anastasiamurawski61792 жыл бұрын

    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

    @anastasiamurawski6179

    2 жыл бұрын

    Sorry for getting political on ya.

  • @miltonm1215

    @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

    @anastasiamurawski6179

    2 жыл бұрын

    @@miltonm1215 Thanks and good luck to you!

  • @efecanacar9875
    @efecanacar98754 жыл бұрын

    This is just great, thanks.

  • @AbdullahAlMamun-ou3qg
    @AbdullahAlMamun-ou3qg3 жыл бұрын

    Nice explanation !

  • @sonarbhagyashri1809
    @sonarbhagyashri18092 жыл бұрын

    Awesome explanation 👍

  • @timmyhuynh3859
    @timmyhuynh3859 Жыл бұрын

    Wow. When you turned that glasses 90 degreee, i was like "wow"

  • @davideiotti9725
    @davideiotti97252 жыл бұрын

    Extremely useful!

  • @loganishere4760
    @loganishere47602 жыл бұрын

    Quite effective explanation. Thank

  • @shreyakalkundri5760
    @shreyakalkundri57603 жыл бұрын

    the best explanation for LCD 👍👍👍

  • @Liravin
    @Liravin4 жыл бұрын

    can you do a video where you disassemble an LCD so one can see how the source relates to the individual pixels?

  • @augustine8142
    @augustine8142 Жыл бұрын

    Great video

  • @rafyreyes3797
    @rafyreyes3797 Жыл бұрын

    omg Best video i have sceen on how LCDs work thank you so much !!

  • @KeithMakank3
    @KeithMakank35 жыл бұрын

    My favorite property of liquid crystal displays is how it makes extra pairs of hands show up in the demonstration :P

  • @neon_light5608
    @neon_light5608 Жыл бұрын

    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.

  • @sohanmishra8025
    @sohanmishra80253 жыл бұрын

    Thank you so much!

  • @sajithsadakalum471
    @sajithsadakalum4718 ай бұрын

    wow great video. thank you

  • @DerMarkus1982
    @DerMarkus19824 жыл бұрын

    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! 😊👍

  • @sauhadra9396
    @sauhadra93966 жыл бұрын

    A very nice video

  • @SubscriberStats
    @SubscriberStats Жыл бұрын

    *_Love The Bloopers!_*

  • @antonymoothedan3688
    @antonymoothedan36886 жыл бұрын

    Nice one

  • @johndripper
    @johndripper6 жыл бұрын

    I saw your cardboard demo I clicked like ;)

  • @mostafamahmod53
    @mostafamahmod532 ай бұрын

    Very good

  • @SevenDeMagnus
    @SevenDeMagnus4 жыл бұрын

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

  • @dkh321
    @dkh3214 жыл бұрын

    Thank you !

  • @christinzing9305
    @christinzing93055 жыл бұрын

    I wish I could meet u once.. U r just awesome.

  • @asadalikhan7389
    @asadalikhan73893 жыл бұрын

    Whatva great expalination

  • @nirbhaykumarchaubey8777
    @nirbhaykumarchaubey87772 жыл бұрын

    Thanks, u got a new subscriber 💜

  • @hadisergan1
    @hadisergan13 жыл бұрын

    thank you

  • @rushabhshah7187
    @rushabhshah71876 жыл бұрын

    if applying voltage doesn't pass light through second filter...then why we have VDD supply in LCD???

  • @KunalSingh-lr7yq
    @KunalSingh-lr7yq5 жыл бұрын

    Thanks bro

  • @user-lv6mt4xz4h
    @user-lv6mt4xz4h3 жыл бұрын

    what's the difference between E-Ink and LCD no backlight needed screens?

  • @CHzwaves
    @CHzwaves4 жыл бұрын

    This is the best content which i had ever seen related to this topic 💖... Thanks a lot...Well explained...😎

  • @Klesx
    @Klesx4 жыл бұрын

    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

  • @candycommander
    @candycommander3 жыл бұрын

    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?

  • @shivanisalian9997
    @shivanisalian99974 жыл бұрын

    I cannot believe how easy you made it to understand

  • @chajenawallace4509
    @chajenawallace45092 жыл бұрын

    I understand it so much

  • @greywolf2809
    @greywolf28092 жыл бұрын

    Nice

  • @ejmtv3
    @ejmtv32 жыл бұрын

    Im glad LED display is born. Much easier to understand than LCD's

  • @arrenroughe517
    @arrenroughe517 Жыл бұрын

    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

  • @haleemahahmad1088
    @haleemahahmad10883 жыл бұрын

    but what happens during a video? How does the light move to create videos?

  • @shavais33
    @shavais334 жыл бұрын

    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?

  • @lingisettisrinivasrao7665
    @lingisettisrinivasrao76654 жыл бұрын

    I bhoucht a m3 band its lcd display pixel are not working

  • @pawandeep313
    @pawandeep3134 жыл бұрын

    thnx

  • @vinny142
    @vinny1426 жыл бұрын

    I just LOVE "advetnures"!

  • @ShawnHymel

    @ShawnHymel

    6 жыл бұрын

    Lol...thanks for catching that. All fixed now.

  • @vinny142

    @vinny142

    6 жыл бұрын

    Keep up the good work my friends!

  • @tahsinuzzamanemon7238

    @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

    @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.

  • @cygenta_modernCRTgamer
    @cygenta_modernCRTgamer4 жыл бұрын

    Joke's on you, I'm watching on a CRT. Trinitron ftw ;)

  • @leif1075
    @leif10752 жыл бұрын

    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??

  • @nuclearnyanboi
    @nuclearnyanboi5 жыл бұрын

    I'm watching this on a TN panel

  • @jsl151850b
    @jsl151850b Жыл бұрын

    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?

  • @manwenqin5920
    @manwenqin59203 жыл бұрын

    good ! i will be think.

  • @hmmmblyat6178
    @hmmmblyat61782 жыл бұрын

    haha carrot goes brrrrrrrr

  • @TUHANbukanorangARAB
    @TUHANbukanorangARAB3 жыл бұрын

    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.

  • @cyrillolarte9106
    @cyrillolarte91064 жыл бұрын

    So to produce black colors you are basically producing more electricity.. Thus affecting battery life

  • @kennethj8236
    @kennethj8236 Жыл бұрын

    Come on CompTIA, why didn't you just say that! This makes a LOT more sense! hahahaha!

  • @amthereheathar7660
    @amthereheathar76602 жыл бұрын

    Holy shit this video was so educationAl

  • @adrianmuniz4454
    @adrianmuniz4454 Жыл бұрын

    Enjoyable

  • @abdurrahmanalquran
    @abdurrahmanalquran4 жыл бұрын

    hold on doesn't the s5 use an amoled

  • @emilyfreeman1207
    @emilyfreeman12074 жыл бұрын

    explaining lcd displays but at 8:00 shows sn oled phone

  • @karenvickery6070
    @karenvickery60705 жыл бұрын

    But what is the liquid crystal made of???? I’m sure it’s not carrot juice! Why doesn’t anyone explain this?

  • @logat1847

    @logat1847

    2 жыл бұрын

    Still have not found that out lol

  • @dand1486
    @dand14863 жыл бұрын

    lol remember indaglow watchs? im sure i spelled that wrong... how did they work?

  • @optimistprime6741
    @optimistprime67413 жыл бұрын

    This is crazy

  • @timneering2913
    @timneering29135 жыл бұрын

    my mom works there!

  • @W0954
    @W09542 жыл бұрын

    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

  • @timneering2913
    @timneering29135 жыл бұрын

    hi shawn

  • @Xtymoon
    @Xtymoon3 жыл бұрын

    drink every time he says liquid chrystal

  • @balbirsingh5452

    @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

    @Xtymoon

    3 жыл бұрын

    @@balbirsingh5452 eyo what you saying son

  • @Xtymoon

    @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

  • @AbnormalWrench
    @AbnormalWrench6 жыл бұрын

    Better than Bill Nye!

  • @ShawnHymel

    @ShawnHymel

    6 жыл бұрын

    Hahahaha....thanks! He is definitely one of my heroes and an inspiration for the series :)

  • @futurechog7357
    @futurechog73574 жыл бұрын

    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 ..

  • @miinyoo
    @miinyoo3 жыл бұрын

    Alphabet! Your algorithms are so bad at predicting what I want! He said a line from Dr. Demento! I want that!

  • @rahulrajendrasaw
    @rahulrajendrasaw2 жыл бұрын

    But how does pass current to millions and billions of RGB crystals saperately.

  • @raglanheuser1162
    @raglanheuser11624 жыл бұрын

    i regret that i have only one like to give

  • @thepizzacarpizza1056
    @thepizzacarpizza10563 жыл бұрын

    im watching a video about how the thing im looking at works on the thing im working at

  • @sinajamil306
    @sinajamil3063 жыл бұрын

    light does not twist bro , thats Bells inequality happening there !

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