Video LED display is usually the main controller, scan board, display control unit and the LED display body composition, as shown. Master controller for a graphics card from the computer screen colors 8 inch LCD Panel each pixel luminance data, then a number of blocks allocated to the scan plate, each scanning LED display control board is responsible for a number of rows (columns), and each row (column) on the LED display with a serial signal is adopted in all our shows cascade transmission control unit, each display control unit body directly facing the LED display.
The work done by the main
10.4 inch LCD Monitor
controller is to the computer display is equipped with card signals into LED display the required data and control signal format.
Display Control and the role of transport, and image display similar to the situation, generally with a gray-level control functions constitute a shift register latch. LED display is the size of the video more often, so you should use a larger-scale integrated circuit, such as my company's chips.
The role of scanning Wrench is the so-called nexus, on the one hand it accepts the main controller of the video signal, the other belonging to the class data to its various display control unit, but also the data does not belong to the class down pull a cascade of transmission scan. Video signal and the LED display data in space, time, sequence differences in other areas, should have a scan board to coordinate.
LED display screen performance comparison with other
LED light-emitting devices in the luminous intensity, color, response speed, power consumption, reliability,8 inch TFT Monitor
longevity and resistance to adverse environment, with comprehensive advantages, making it the main instrument of public information release.
Ordinary LED luminous intensity luminous intensity luminous light around 10mcd (cents Candela), high brightness LED light, etc. for the 10-100mcd, high brightness LED light lights luminous intensity over the 100mcd. General LED LED lights for indoor applications, such as ultra-high brightness LED light can be used outdoors.
Color LED light-emitting devices by using different semiconductor materials, may issue a different wavelength of light, that is, different colors of light. LED devices are more common red, orange, yellow, green and other colors. Have recently developed and produced high brightness blue LED devices, thus promoting the three primary colors based on RGB full-color LED display and rapid realization of wide application. This is the most recent period of rapid rise in full color one of the key factors.
Response speed response frequency of LED devices and into a small number of the life of the carrier, its response frequency is about 16-160MHz, so the response of high frequency 6.5MHz for the display of the video signal is already enough. It is the realization of video LED display one of the key factors.
LED light lamp power consumption of ordinary working current of only 10mA, high brightness LED devices, but also the operating current 100mA, with its operating voltage of only 2V or so, so the power consumption minimal.
Reliability, longevity and resistance to adverse environmental performance is solid as LED devices, significantly higher than the reliability of electronic vacuum devices such as CRT is much higher and there is no limit, such as cathode-aging and life issues. Vibration properties of impact of solid devices is also much higher than other display device.
LED and CRT, filter incandescent lamp, optical fiber, piracy and other displays of performance comparison, the following table:
Project LED CRT filter pirated optical fiber incandescent
Slow response speed in the slow-fast
Strong resistance to harsh environments in the bell in the strong
High reliability,8 inch LCD flat Panel Monitor low Low Medium High
Long life in the short-long-long
High High Low High brightness
Light weight of the light
Large power consumption of large size
High in the low-cost high
Axial Angle greatly greatly
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