Voltage drop compensation method and its device, display device

Abstract

A voltage drop compensation method and a device thereof, and a display device are disclosed. The voltage drop compensation method includes: obtaining an impedance distribution of the plurality of rows of pixels, and constructing a voltage drop model based on the impedance distribution of the plurality of rows of pixels; obtaining a source-end input current of the display panel; determining an input value of the voltage drop model based on the source-end input current, and determining at least one voltage drop corresponding to the at least one pixel row to be compensated according to the input value; and determining, according to the at least one voltage drop, at least one compensation grayscale which is in one-to-one correspondence with the at least one pixel row to be compensated respectively and performing grayscale compensation on the at least one pixel row to be compensated based on the at least one compensation grayscale.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a voltage drop compensation method and its device, and a display device. Background technique [0002] With the development of science and technology, Active Matrix / Organic Light Emitting Diode (Active Matrix / Organic Light Emitting Diode) display device is recognized by the industry as the display device with the most development potential due to its advantages of lightness, thinness, bright color, and high contrast. [0003] At present, in order to meet users' pursuit of better visual effects, the panel size and resolution of AMOLED display devices are constantly increasing. However, for AMOLED display devices with large panel size and high resolution, when using the same power supply voltage (V DD ) when supplying power to each pixel unit in its display area, since the wires that transmit electrical signals corresponding to each pixel unit have different resistances, it is ea...

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