In this article we are going to explain different types of display screens. Display screen means the display portion of a monitor. Most display screens work under the same principle as a TV, using a cathode ray tube (CRT). Inconsequently, the term CRT is often used in place of display screen.
Different Types of Display Screens
There are many types of display screen in modern electronics some import and basic displays screens mostly are as follows.
- CRT Monitor
- Flat pane3l display
- Gas plasma Display
CRT monitor is the most common type of display screens, it lookup like a TV. It can display text & a graphics.
Wording of CRT Monitor
It is use a cathode ray tube (CRT) to display a photo on the screen. CRT consist of one or more guns which fire a beam of electrons, inner the screen.
The screen is coated with small phosphor dots from insides. The beam of electrons repeated falls on the surface of screen. Every beam-fall take only a part of a second. CRT in color monitors consist of three guns these guns create red, green and blue (RGB) colors. The other colors are creates with the combinable of these three colors.
Flat pane3l display:
Flat-panel monitors took less space and are lightweight. These monitors is use very least power than CRTs.
Notebook computers or Laptop computer is use flat panel monitors. Flat panel display is made up of 2 plates of glass. These plates contains a substance betwixt them. The substance is activating in differential ways.
Types of technologies used in flat panel display screens:
liquid Crystal Display :
This form of display screen contain a substance called liquid crystal (LC). The molecules of this substance line up in such a way which light behind the screens blocked or allowed to create a photo.
Electro Luminescent Display :
This form of display screen contain a substance which shining when it has charged by electric current.
Gas plasma Display:
This form of display screen is similarly to neon bulb. The display is used a gas that emitted light in the presence of an electric current. It is very much expensive technology. It is not usually used.
Advantages of flat panel display:
These advantages of flat panel display over CRT are as follows:
- 1. It is takes less desk space.
- 2. It is used less energy than CRT monitor.
- 3. It is used liquid crystal technology.
- 4. Its weight less than CRT.
- 5. It has used for notebook computers, cellular phones, personal computers and PDAs.
- 6. It does not emitters harmfully radiation.