LED display system composition
LED display as a high-tech products has aroused great attention, using computer control, light, electricity integration of intelligent full-color display has been applied in extensive fields. The pixels with LED light-emitting diodes, light emitting diodes in the number of dots arranged together to form the LED array, and thus constitute the LED screen. Through different LED driver
LED display as a high-tech products has aroused great attention, using computer control, light, electricity integration of intelligent full-color display has been applied in extensive fields. The pixels with LED light-emitting diodes, light emitting diodes in the number of dots arranged together to form the LED array, and thus constitute the LED screen. LED drive through different methods, different results obtained image. Therefore, the merits of LED driver chip, the display quality of the LED display plays an important role. LED driver IC chip can be divided into general and special chip. General-purpose chip for low-end LED display products, such as indoor, single, two-color screens.
Currently, LED display driver chip manufacturer dedicated mainly TOSHIBA (Toshiba), TI (Texas Instruments Inc. USA), SONY (Sony), MBI (Macroblock), SITI (Silicon Touch Technology), etc. In the domestic LED display industry, which has applications in several of the chips.
As the LED current characteristics of the device is that the premise of the saturated conduction, its brightness as the current size of the change, not with the ends of the voltage change. ASIC's most important feature is to provide a constant current source output, to ensure the stability of LED drivers, LED's to eliminate flicker. With output current, constant current, etc., suitable for applications requiring high current, high-quality applications, such as outdoor full color display, indoor full color and so on.
LED display driver is generally multi-channel constant current source (currently the majority of 16 channels), plus features such as gray-scale control, IC is not integrated DC / DC power modules, etc., and in the backlight and lighting drive, the channel number will less, and DC / DC converter module is usually part of the IC. LED display screen attaches great importance to the performance capabilities and image refresh rate, high-fit, high refresh rate and a high-resolution LED display for judging the merits of the key performance indicators. This requires the LED display driver IC for high consistency between the current channel, high-speed communication interface speed and constant speed of response. Display Driver LED technology focused on grayscale output linearity and fast response. Backlight is a multi-plant and multi-string architecture enables the operation voltage up to require 50V ~ 60V, which makes driver IC technology needed to improve in each LED string high voltage difference between the degree of VF will need to be taken into account , which is the overall power efficiency and constant current (ConstantCurrent) control will be greatly affected.
LED display as a high-tech products has aroused great attention, using computer control, light, electricity integration of intelligent full-color display has been applied in extensive fields. The pixels with LED light-emitting diodes, light emitting diodes in the number of dots arranged together to form the LED array, and thus constitute the LED screen. LED drive through different methods, different results obtained image. Therefore, the merits of LED driver chip, the display quality of the LED display plays an important role. LED driver IC chip can be divided into general and special chip. General-purpose chip for low-end LED display products, such as indoor, single, two-color screens.
Currently, LED display driver chip manufacturer dedicated mainly TOSHIBA (Toshiba), TI (Texas Instruments Inc. USA), SONY (Sony), MBI (Macroblock), SITI (Silicon Touch Technology), etc. In the domestic LED display industry, which has applications in several of the chips.
As the LED current characteristics of the device is that the premise of the saturated conduction, its brightness as the current size of the change, not with the ends of the voltage change. ASIC's most important feature is to provide a constant current source output, to ensure the stability of LED drivers, LED's to eliminate flicker. With output current, constant current, etc., suitable for applications requiring high current, high-quality applications, such as outdoor full color display, indoor full color and so on.
LED display driver is generally multi-channel constant current source (currently the majority of 16 channels), plus features such as gray-scale control, IC is not integrated DC / DC power modules, etc., and in the backlight and lighting drive, the channel number will less, and DC / DC converter module is usually part of the IC. LED display screen attaches great importance to the performance capabilities and image refresh rate, high-fit, high refresh rate and a high-resolution LED display for judging the merits of the key performance indicators. This requires the LED display driver IC for high consistency between the current channel, high-speed communication interface speed and constant speed of response. Display Driver LED technology focused on grayscale output linearity and fast response. Backlight is a multi-plant and multi-string architecture enables the operation voltage up to require 50V ~ 60V, which makes driver IC technology needed to improve in each LED string high voltage difference between the degree of VF will need to be taken into account , which is the overall power efficiency and constant current (ConstantCurrent) control will be greatly affected.
