OLED oled modules technology needs of the current control method for driving

OLED having quite similar electrical characteristics, with a standard light-emitting diode (LED) brightness vary depending on the LED current. To open and close to OLED and control the OLED current, the control circuit requires the use of a thin film transistor (TFT). Advanced power saving mode can achieve the highest efficiency and any battery-powered device, and only when the converter to operate for maximum efficiency of the overall load current range in order to achieve long battery standby time, which is particularly important for an OLED display. Maximum power consumption when the OLED display is completely white, for any other display color of the current is relatively small, this is because only white need all the red, green, and blue sub-pixels are full brightness. For example, the 2.7-inch display 80mA current to render an all white image, but only 5mA current display other icons or graphics.color lcd display module
Therefore, OLED power supply to achieve high conversion efficiency for all load current. In order to achieve such efficiency, it is necessary to use advanced energy-saving mode technology to reduce the load current to reduce the switching frequency of the converter. Since this is through the voltage controlled oscillator (VCO) to complete, thereby possible EMI problems to a minimum, and the minimum switching frequency control other than ships 40kHz audio range, this can be avoided on the the ceramic input or output capacitor to generate noise . The use of such devices in the mobile application, this is particularly important, but also simplifies the design process.
Consumption, based on the brightness value to determine the power consumption by the light-emitting characteristics of white light is not. Such as red, blue, green luminance value 30 the luminance value of the white light is generated when 10 together bright. Will even red, green and blue values ​​are transferred into a 3.3 Synthesis of 10 white value (theoretical value). From the same brightness LED or OLED, Blu-ray power consumption.lcd graphic display