Driving data voltage regulating method and system for organic light emitting display

Abstract

The invention provides a driving data voltage regulating method and a driving data voltage regulating system for organic light emitting display. The driving data voltage regulating system for organiclight emitting display comprises a pixel array and a processing module, wherein the pixel array is divided into a plurality of pixel array blocks; the processing module is connected with the pixel array, is stored with a plurality of graded supply voltages, and is used for dividing the received input gray scale into a plurality of input gray scale blocks in one-to-one correspondence with the plurality of pixel array blocks, and selecting the matched graded supply voltages according to the input gray scale blocks corresponding to the pixel array blocks, wherein the graded supply voltages are taken as input supply voltages and are transmitted to the pixel array blocks; the processing module is further used for selecting the corresponding data voltage according to the input supply voltages and the received input gray scale, and transmitting the data voltage to the pixel array. For the method and the system provided by the invention, the voltage change amplitude of the current of OLED light-emitting elements under regulation of data voltage is expanded, and the accurate control of the data voltage for the current of the OLED light-emitting elements is realized.

Description

technical field [0001] The present invention relates to the technical field of display driving, in particular to a method and system for adjusting a driving data voltage of an organic light emitting display. Background technique [0002] A typical active matrix organic light emitting diode (AMOLED) usually includes a plurality of gate lines, a plurality of data lines, a plurality of power lines, and N rows and M columns of pixel units connected to the above wires and arranged in a matrix (wherein, N and M are both positive integers). attached figure 1 It is a schematic structural diagram of a typical 2T1C pixel circuit in the prior art. Such as figure 1 As shown, each pixel unit usually includes two transistors, that is, the switching transistor T for transmitting data signals 2 and a drive transistor T for driving an organic light-emitting element OLED (Organic Light-Emitting Diode, organic light-emitting diode) according to a data signal 1 ; In addition, each pixel un...

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