How Does a Computer Monitor Work?

Video Transcript

"Hi, my name's Dave Andrews. Today I'm going to explain to you how a computer monitor works. I'm going to explain to you how an LCD monitor works because that's what most people use nowadays, and I have here a diagram, it's going to show you how one works. This is kind of the inside of your LCD screen monitor. As you can see there's many different sections that are going to be inside of your LCD monitor, and there's also going to be a back light device. Basically what happens is when you want to display something on your monitor, a little pulse of electricity is sent through these liquid crystals that causes them to align themselves to allow the back light to flow through without being blocked by the crystals themselves. Liquid crystals are the LC in LCD. Now when these liquid crystals align and light is able to pass through, that's going to allow to pass through one of these color filters right here. You have red, green, and blue. Now when light is displayed it's either going to be shown, one red pixel will be red, green, or blue entirely, and a combination of these red, green, and blue colors is what's going to display the image on the screen. So, basically a monitor works by pulsing electricity through these liquid crystals which allows light to pass through one of these color filters. My name is Dave Andrews, and I've just explained to you how a computer monitor works."