奇美10.4寸液晶显示屏

LED display

      LED is the abbreviation of LightEmittingDiode, Chinese meaning for light emitting diode, is a solid-state semiconductor devices, it can directly convert electrical energy into light energy. LED display is the advanced digital information product, it successfully combines the computer technology, network communication technology, image processing technology, embedded control technology, etc., has flexible display area and resolution (modular can be assembled freely), high brightness, low power consumption, long life, low quantity of heat, environmental protection, durable wait for an advantage, the integrated use of sound, light, electricity, figure and text, is comprehensive, perfectly show the information of end products.
LED display in the studio and television is increasingly used in large-scale activities, as a backdrop, it provides a variety of vivid, brilliant background images and more interactive features, make the background images also move also static, the performances and background together, let a person feel immersive. It brings stage more daydream space, design the modern and the stage of visual impact, perfect to live and show the atmosphere of the fuses in together, realize the other stage arts the function and effect of equipment is difficult to achieve.
The audience watch the effect and experience of LED display is very intuitive, as long as the screen size and pixel pitch and viewing distance, the appropriate type of this kind of direct display can obtain excellent results. However, the number of the front of the television audience is far greater than the number of audience, so the watch effect of the front of the television audience is TV technology workers are the focus of the study and discussion. Many units use the LED display, but the television picture is difference is very big, some bright colors, clear picture stable throughout; Have a plenty of vision when the picture look down upon, or when the close shot is the window of some of the activities, or erratic interference stripe, in some people close-up, often appear moire, disrupting the line of sight of the audience.
In the process of selection and use of the LED display should pay attention to the following aspects:
1. Point spacing should be as small as possible
Point spacing is LED display center distance between the adjacent pixels. Point spacing is smaller, the more pixels per unit area, the higher the resolution, the closer shot distance can, of course the price is more expensive. Use the LED display of the current domestic television studio spacing of 6 -- 8 mm, in order to achieve good effect, to seriously study the resolution of the signal source and the relationship between the pixel pitch, resolution should try to be consistent, to achieve a point-to-point display, so as to achieve the best effect.
2. The filling coefficient is higher

The filling coefficient of LED display (FillFactor) is known as the bright area ratio, namely the light emitting area of

 each pixel and the pixel of the surface area ratio of physics. LED display is composed of discrete pixel permutation, obvious light black between pixel area. When a closer look at the picture inconsistent incomplete, and uneven brightness produce particles move, if the light source is limited within the small pixel area, causing a single pixel brightness is several times the whole screen brightness and even more than ten times, can cause more serious sense of harsh. Flat panel display industry recognized TCO '99 standard regulation, filling coefficient should not be less than 50%, and the filling coefficient of many LED display on the market at present have not reached the target. TV cut-off characteristic of low pass filter is also directly affect the filling coefficient of different LED display appropriate shooting distance. Same distance between the LED display, filling coefficient of more than filling coefficient of attenuation, so need to increase the shooting distance. If the system low pass filter passband is 4 MHZ, high frequency attenuation characteristics of 12 db/octave, so, filling coefficient of 25% shooting distance is more than 50% of filling coefficient of attenuation 1.15 db, shooting from the need to increase by about 10%. Filling coefficient increase, making display more broad perspective, melange effect is more ideal, to overcome the problem pixels of dazzling, and raise the whole screen brightness to the appropriate create conditions to have a better effect. Jiangsu entertainment chose filling coefficient is 60% of the LED display, it has a moderate soft brightness, uniform color, clear and exquisite performance, guarantees the high quality of the display screen.

3. Color temperature can adjust
Color temperature (ColorTemperature) is through the emitter emission spectrum shape with the best fitting compared to determine the temperature of the blackbody emission spectral shape. Studio using LED display screen as a background, the color temperature should be consistent with the studio light color temperature, can get the exact color reproduction in. The studio lights according to the program requirements, sometimes use 3200 k low colour temperature of lamps and lanterns, sometimes use high 5600 k color temperature of lamps and lanterns, LED display, need to adjust to the corresponding color temperature, to obtain satisfactory results.
4. The distance to the right
As we talk about point spacing and filling coefficient mentioned, different spacing, different filling coefficient of LED display, proper shooting distance is not the same. Was made the characters and the distance between the screen in the 4-10 m is more appropriate, so that when taking people can get a better background images. If the character off-screen too close, close shot in photography, the background will appear grain feeling, also easy to generate moire.
5. Ensure good use of the environment
Product in service life period only under the condition of appropriate work, low failure rate. LED display as an integration of electronic products, it is mainly composed of electronic components and other components of the control panel, switching power supply, light-emitting devices, and all of life and stability of these components has close relationship with temperature. If the actual working temperature exceeds the scope of the product, not only will shorten its life, the product itself can also severely damaged. In addition, the threat of dust also nots allow to ignore. Dust in the larger environment, work, because the PCB adsorption dust, the dust deposition affects the cooling of electronic components, components will cause temperature rise, and thermal stability decline and even produce leakage, serious when burned. Dust will also absorb the moisture and corrosion of electronic circuit, causing some short circuit problem is not easy to troubleshoot. We must keep the room clean. Studio transformation will produce a lot of dust, need to keep protection of LED display the work ahead of time.
Use the LED display display form of greatly enriched the program background, LED display screen as a background, is suitable for the large-scale variety show big scenes, the studio.

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