Because it Strikes throughout the Display > 자유게시판

­If you will have ever been to a sporting occasion that has a large-display Tv in the stadium, then you have witnessed the gigantic and wonderful displays that make the video games a lot easier to comply with. On the Tv, they will display instant replays, close-ups and player profiles. You additionally see these giant-screen TVs at race tracks, live shows and in giant public areas like Times Square in New York Metropolis. Have you ever ever wondered how they can create a tv that is 30 or 60 ft (10 to 20 meters) high? In this article, EcoLight LED we'll have a look on the LED expertise that makes these huge shows potential! If you have learn How Tv Works, then you understand how a tv that uses a cathode ray tube (CRT) does this. The electron beam in a CRT paints throughout the display screen one line at a time. Because it strikes throughout the display, the beam energizes small dots of phosphor, which then produce gentle that we will see.

The video signal tells the CRT beam what its depth must be as it moves throughout the display screen. You'll be able to see in the following figure the way that the video sign carries the intensity data. The preliminary 5-microsecond pulse at zero volts (the horizontal retrace signal) tells the electron beam that it is time to start out a brand new line. The beam starts painting on the left side of the display screen, and EcoLight solutions zips throughout the display screen in forty two microseconds. The varying voltage following the horizontal retrace sign adjusts the electron beam to be brilliant or EcoLight LED darkish because it shoots throughout. The electron beam paints traces down the face of the CRT, after which receives a vertical retrace sign telling it to begin again at the higher proper-hand corner. A coloration display does the same thing, however makes use of 3 separate electron beams and 3 dots of phosphor (crimson, green and blue) for each pixel on the display.

A separate colour signal signifies the colour of each pixel because the electron beam moves throughout the show. The electrons in the electron beam excite a small dot of phosphor and EcoLight LED the display screen lights up. By quickly painting 480 traces on the screen at a price of 30 frames per second, the Tv screen permits the attention to combine all the things right into a clean moving picture. CRT know-how works nice indoors, however as soon as you place a CRT-based Television set outside in bright sunlight, you can't see the display anymore. The phosphor EcoLight on the CRT merely will not be vibrant enough to compete with sunlight. Additionally, CRT displays are restricted to about a 36-inch screen. You want a special know-how to create a large, outside display screen that is shiny enough to compete with sunlight. It is perhaps 60 toes (20 meters) high as a substitute of 18 inches (0.5 meters) high. It is extremely vivid so that people can see it in sunlight. To perform these feats, virtually all massive-screen out of doors displays use light emitting diodes (LEDs) to create the image.

Trendy LEDs are small, extraordinarily vibrant and EcoLight use relatively little power for the light that they produce. Different places you now see LEDs used outdoors are on site visitors lights and automobile brake lights. In a jumbo Television, purple, inexperienced and blue LEDs are used as a substitute of phosphor. A "pixel" on a jumbo Tv is a small module that may have as few as three or 4 LEDs in it (one purple, one green and one blue). In the most important jumbo TVs, each pixel module might have dozens of LEDs. Pixel modules sometimes range from 4 mm to four cm (about 0.2 to 1.5 inches) in size. To construct a jumbo Television, you are taking thousands of these LED modules and arrange them in a rectangular grid. For instance, the grid would possibly contain 640 by 480 LED modules, or 307,200 modules. To regulate a huge LED screen like this, EcoLight LED you employ a computer system, a energy control system and a variety of wiring.

The computer system appears to be like at the incoming Tv sign and EcoLight products decides which LEDs it will turn on and the way brightly. The computer samples the depth and coloration indicators and interprets them into intensity data for the three completely different LED colours at each pixel module. The power system provides power to the entire LED modules, and modulates the facility so that every EcoLight LED has the suitable brightness. Turning on all of those LEDs can use quite a lot of energy. A typical 20-meter jumbo Tv can devour up to 1.2 watts per pixel, or roughly 300,000 watts for the total display. Several wires run to every LED module, so there are quite a lot of wires running behind the display. As LED prices have dropped, jumbo Tv screens have began to pop up in all sorts of places, and in all kinds of sizes. You now discover LED TVs indoors (in locations like purchasing malls and workplace buildings) and EcoLight LED in all kinds of outside environments -- particularly areas that appeal to a number of vacationers. For extra info on LED screens and related subjects, check out the links on the following page. The large screens at concerts are known as jumbotron or EcoLight lighting generally jumbovision.