Definition computer screen

Computer screen

Types of display screens

 Screen of the CRT type
    LCD screen of the kind

The screen of the best types of plasma screens

217.165.251.128 (Talk) cathode ray tube ===

CRT screens where it is a shortcut to this Cathode Ray Tube and means the cathode ray tube. Used in the Most TV's, and found almost 60 years ago. During this long period, the techniques followed by work has not changed much!

 Idea work core is starting electrons from behind the screen to reach the surface of the display lining layer of phosphorus, the intensity of the starting cause radiation different Ktronat tides, electron beam that passes through a series of layers magnetic solid, which in turn developed in a way that allows her directing radiation to different placesin Stahaerd, when up this radiation to glass surface display collide layer phosphorus on them, causing point glowing temporarily, each point represents a single pixel in the display, when heated screen, the gun electrons called the amount of electrons very fast and fired at the other end of the tube andeach of controlled focus and a spiral deviation directing electron beam to a specific point on the screen phosphorous and when collide package phosphorus, the phosphorus glow and there should be a consensus between the duration of glow screen and between frequency scanning even picture shows well and moving electron beam rapidlyeven wipe the screen from left to right in the form of lines from top to bottom in the form of a package called Raser and during the scanning process, the package collide phosphorus and to display the image on the screen and vary packets from each in the amount of intensity and that in order to produce different levels of glare.

The precise voltage control each electron allows blazingly slick caused by the shining surface brightness or less bright, giving black and white. Old: television was black and white has a gun and one of the electrons and a single layer of phosphorus, then added several guns in the display screens of this type so that the layers phosphorus discoloration dots became intermittent and separate.

Screens are of the kind either monochrome CRT Monochrome or color bringing the total number of colors to 16 million colors and most of the displays have a refresh rate or vertical scanning frequency ideally about 70 Hertz and this means that the re-configured screen 70 times per second

LCD TV in the house with some PlayStation 3 and other equipment LCD televisions produce a black image and selectively color of white light through the filter. And usually offer in the light of a series of fluorescent lamps (CCFLs) in the back of the screen, although some use offers white or colored bulbs instead. Millions of individual LCD shutters, arranged in a grid, open and close to allow the amount of metered white light through. Associated with each shutter with a colored filter to remove all but the red, green or blue (RGB) portion of the light from the source of the original white. Each pair shutter one candidate is a sub-pixel. Sub-pixels are so small that when the screen is viewed from a short distance until the individual colors blending together to produce a single spot of color, pixels. Is controlled in the shade of the color by changing the relative density of the passage of light through the sub-pixel.

Liquid crystals include a wide range of polymers in the form of a rod (usually) that form naturally into thin layers, rather than more random alignment of the normal fluid. Some of these, linear liquid crystals, and also show the impact of the alignment between layers. You can set a certain direction of liquid crystal alignment filiformis placing it in contact with the alignment layer or director, which is essentially a material with microscopic grooves in it. When placed on the director, the layer in contact to join grooves, and the layers above the alignment later themselves with layers below, taking the bulk material to align director. In the case of a LCD, and uses this effect by using two directors arranged at right angles and placed close to each other with a liquid crystal between them. This forces the layers her voice in two directions, creating a twisted structure with each layer aligned at a slightly different angle to those on either side.

 Plasma

Plasma is the fourth case of the material, we all know that Article three cases are solid Solid State, and liquid Liquid and gaseous Gas The plasma is case ionized Ionized State, Plasma displays are small thickness not exceeding 10 cm and the brightness of the very high High Resolution compared species mentioned above,the United States Oleoniz University is the first to do that screen, and combines this screen CRT screen technology, LCD screens and use UV in its Ultaviolet

    

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