Displays are the thing we interact the most with while using any of our devices from desktops to laptops, from from smart phones to tablets, every thing has a display and all of them looks so similar every display that we see today is sharp, slim, sexy with million of colors but when you read the specs every thing is different some are LCDs,LEDs, IPS, TFTs, OLEDs, AMOLEDs and many more..
And that's what this Get To Know is all about, get inside each and every kind of display and see what it is and how it works..
But before starting this Get To Know i would like you to know that i have already made a video on this so if you want to check that out just click this link .
https://www.youtube.com/watch?v=aHVEBThfC_U&list=PLari93Sljmzi6ZTgcNdVnwGU32xbVYOnD&index=2
https://www.youtube.com/watch?v=aHVEBThfC_U&list=PLari93Sljmzi6ZTgcNdVnwGU32xbVYOnD&index=2
Let's start with the oldest electronic TV, remember the old heavy bulky TV we had in our living room they use the same technology as the first all electronic television. CRT technology . CRT ( Cathode Ray Tube) and was made by Philo Taylor Farnsworth in 1928 as in the name he used cathode ray tubes to make that TV but the CRT's were not his invention CRT's were developed by a Karl Ferdinand Braun. let's see how CRT tv work.?
CRTs are great but the list of cons is not acceptable so there was a need of something better and that's when LCD's come in the picture.
Get To Know Displays Part-2 LCD's will be out the next day this article goes online so be sure to read that tomorrow
CRT Televisions
A CRT tv consist of a electron gun which fires a beam of electron on the phosphor screen (the part where images are made) that glows at the spot where the electron struck, well that's just the summary let's take a more detailed look. Inside the electron gun there is a heating element on the cathode of negative part of the gun that excites the electron by giving them energy and when the electrons get excited they jump outside and outside that element there's the anode or positive part or the gun which attracts the electron giving them direction and increasing the speed but electron need to be in a straight line before hitting screen that is why the anode has only one opening in the middle that let's electron pass through and he electron that hit the anode nit he opening get absorbed by anode.
After that comes a two pair of horizontal and vertical pair of focusing and deflecting coils that determine the spot on which the electron should hit the phosphor screen.
But the first Television wasn't a color tv it's was Black and White, and because of the difference a question rise. How ? Television got it's color, and to understand that we have to see the difference between both the versions of the tv, the Black ans White Tv consists of only one electron gun and a phosphor screen that glows White or Grey when an electron strikes it. But the color Tv has three electron guns and a phosphor screen having little Red, Green and blue spots on it each electron gun is sensitive only one color these spot on the screen are so small that when the screen glows light from each color blends creating a new whole different color and every color that a human eye can see is made up of these three colors.
Pros and Cons
- Pros
- Great viewing angles.
- Low response time responsible for images without blur.
- Long Lasting.
- Cons
- Heavy and bulk taking so much space so making a big display would take up so much space.
- Uses high amount of power
- Can suffer Image Burn-in
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| Image Burn-in |
Get To Know Displays Part-2 LCD's will be out the next day this article goes online so be sure to read that tomorrow
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