Internal Construction Of Transparent LED Display

- Sep 14, 2017-

     LED display as a High-tech products caused people to attach great importance to the use of computer control, the light, electricity into one of the large-screen Smart Display has been applied to many fields. LED display pixels using LED light-emitting diode, a number of light-emitting diodes in the dot matrix arrangement, forming an LED array, and then constitute the LED screen. Through different LED drive mode, can get different effect of the image. Therefore, the advantages and disadvantages of the driving chip play an important role in the display quality of LED display.Transparent LED Display

     LED driver chip can be divided into universal chip and special chip. General-purpose chip commonly used in LED display of low-end products, such as indoor single, dual-color screen. The most commonly used chip is 74hc595, with 8-bit latch, serial register and three-state output function. The maximum output of 35mA current per road (not constant current) General IC manufacturers can produce such chips.Transparent LED Display

     Because of the LED current characteristic device, that is, under the condition of saturation conduction, the brightness changes with the change of the current size, not with the change of the voltage at both ends. Therefore, one of the biggest characteristics of ASIC is to provide constant current source. Constant-current source can ensure the steady-drive led, eliminate led flicker phenomenon. Transparent LED Display

    The following will focus on the first dedicated LED display driver chip. Special chip with large output current, constant current and other basic features, compared to the requirements of large current, high quality occasions, such as outdoor full-color, indoor full-color and so on. The key performance parameters of the special chip have the maximum output current, the output of the constant current source, the current output error (Bittobit, chiptochip and data shift clock, etc.).Transparent LED Display

    Make sure the control system hardware is properly on. (v), check and confirm that the serial line used to connect the controller is a straight line, not a crossover line, check and confirm that the serial connection line is intact and the ends are not loose or off. control software and its own selection of control cards to select the correct product model, the correct transmission, the correct serial number, the correct baud rate and control the software provided in the code switch map correctly set the hardware of the system of address and baud rate. See if the jumper cap is loose or off; If the jumper cap is not loose, make sure the jumper cap is in the correct direction.Transparent LED Display

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