A kind of driving circuit of amoled panel and corresponding driving method

Abstract

The invention discloses a driving circuit of an active-matrix organic light-emitting diode (AMOLED) panel. The driving circuit of the AMOLED panel comprises a driving assembly and a sub-pixel cell. The driving assembly comprises a scanning pin and a data pin; the sub-pixel cell comprises sub-pixel lines and sub-pixel columns; the sub-pixel lines respectively comprise sub-pixels of all pixels belonging to the same line, wherein the sub-pixels are same in emitting color; data signal input ends of all the sub-pixels in each sub-pixel line are connected together and are mutually connected with the data pin of the driving element; and scanning signal input ends of all the sub-pixels in each sub-pixel column are connected together and are mutually connected with the scanning pin of the driving element. Through improvements, red-green-blue (RGB) sub-pixels are distinguished from each other when panel sub-pixels are connected by the driving circuit disclosed by the invention, so that the driving of the AMOLED panel adopting the driving circuit does not need to adopt an RGB data signal multiplexing mode. Further, a necessary demultiplexing module adopting a traditional driving circuit can be saved on a hardware circuit, so that the product complexity and cost are reduced.

Description

technical field [0001] The invention relates to the field of AMOLED display technology, in particular to an AMOLED panel drive circuit and a drive method corresponding to the drive circuit. Background technique [0002] In flat panel display technology, organic light-emitting diode (Organic Light-Emitting Diode, OLED) displays are widely used in the industry due to their thinness, active light emission, fast response speed, wide viewing angle, rich colors and high brightness, low power consumption, and high and low temperature resistance. It is recognized as the third generation display technology after liquid crystal display (LCD). Active OLED (ActiveMatrixOLED, AMOLED) is also called active matrix OLED. AMOLED is driven by integrating a thin-film transistor (TFT) and a capacitor in each pixel and maintaining the voltage by the capacitor, which can realize large-size, high-resolution panels. , is the focus of current research and the development direction of display techno...

AI Technical Summary

Problems solved by technology

[0008] However, it can be seen from the structure of the pixel circuit that the data signal line Vdata and the power line Vdd are in the same plane (sources of T1 and T2 respectively), and both are in the long side direction of the sub-pixel, which is not conducive to the improvement of the pixel aperture ratio.

In addition, the IR-DROP (resistance voltage drop) of Vdd is more serious due to the existence of wire resistance inside the array. In order to reduce the IR-DROP of the power supply voltage Vdd, it is generally necessary to design the power line Vdd to be higher than the data line Vdata and addressing line Vscan. Much wider, which further affects the pixel aperture ratio

Images