Active organic light emitting array driving system and driving method

Abstract

The invention provides an active organic light emitting array driving system and driving method. The active organic light emitting array driving system at least comprises a driving unit, a reference signal supplying unit, a sampling unit, a modulation parameter determination unit, a modulation unit and a control unit. The driving unit is connected with a plurality of light-emitting diodes to form an active organic light emitting array, the reference signal supplying unit is used for supplying different reference signals to the driving unit repeatedly, the sampling unit is used for collecting the correlated electric signals of the light-emitting diodes on the basis of the position correlated information of the light-emitting diodes, the modulation parameter determination unit is used for confirming the modulation parameters of the light emitting units on the basis of the multiple sampling results, the modulation unit is used for modulating the electric signals related to the image data of the light emitting units on the basis of the modulation parameters and the modulation rules of the light emitting units, and the control unit is used for transmitting the reference signals or the modulated signals to the driving unit. The active organic light emitting array driving system and driving method can restrain the inconsistency caused by the fact that the threshold voltage of a driving tube is not matched with parameters such as carrier mobility and the inconsistency caused by supply voltage IR-drop.

Description

technical field [0001] The invention relates to the field of active organic light emitting diodes, in particular to an active organic light emitting array drive system and a drive method. Background technique [0002] The advantages of active organic light emitting diode (AMOLED) display technology over active matrix liquid crystal display (AMLCD) display technology are: low power consumption (no backlight required), wide viewing angle, high brightness and fast response, etc., so AMOLED display technology It has developed rapidly, and its share in the display field is gradually increasing. [0003] The most commonly used AMOLED pixel driver circuits such as figure 1 shown. When data is written, the signal SEL1 is at a high level, so that the switch tube T11 is closed, and the image data V1data is directly loaded to the gate of the driving transistor DTFT1, and this voltage information is stored in the capacitor C1st; during the light-emitting phase, the signal SEL1 is at a...

AI Technical Summary

Problems solved by technology

As shown in the document "A Luminance Adjusting Algorithm for High Resolution and High Image Quality AMOLED Displays of Mobile Phone Application", the optical signal sampling and feedback method is adopted, but this method requires a brightness sensor, which is difficult to manufacture, and the brightness Sensors are susceptible to ambient light

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