Pixel driving circuit and driving method thereof, display panel and electronic equipment

Abstract

The embodiment of the invention provides a pixel driving circuit and a driving method thereof, a display panel and electronic equipment, relates to the technical field of display, and aims to improve the grid potential stability of a driving transistor and reduce the number of oxide transistors. The pixel driving circuit comprises a driving transistor, wherein a gate electrode, a first electrode and a second electrode are respectively connected with a first node, a second node and a third node; an initialization module which writes a reset signal into the third node and the anode of the organic light-emitting diode, and comprises a third switch transistor which is connected between the second switch transistor and a reset signal line and is a low-temperature polycrystalline silicon transistor; a data signal write-in module which writes a reset signal into a first node, wherein the data signal write-in driving transistor comprises a first switch transistor and a second switch transistor which are arranged in series and connected between the first node and a third node, the first switch transistor is connected between the second switch transistor and the first node, the first switch transistor is a low-temperature polycrystalline silicon transistor, and the second switch transistor is an oxide transistor.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically relates to a pixel driving circuit and a driving method thereof, a display panel and electronic equipment. Background technique [0002] With the continuous development of display technology, active-matrix organic light emitting diode (AMOLED) display panels have become mainstream products in the display industry, and are widely used in mobile phones, computers and wearable electronic products. The AMOLED display panel includes a plurality of pixel driving circuits arranged in a matrix, and the pixel driving circuits are electrically connected to the organic light emitting diodes to provide driving current to the organic light emitting diodes to drive them to emit light. [0003] figure 1 It is a structural schematic diagram of a pixel driving circuit in the prior art, such as figure 1 As shown, the pixel driving circuit includes a first transistor T1 ′ to a ninth...

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Problems solved by technology

However, due to the larger size of the oxide transistor, the formed parasitic capacitance is also larger. Therefore, when the potential of the gate of the oxide transistor and the source or drain of the oxide transistor electrically connected to the driving transistor jumps , affected by the parasitic capacitance, it will still cause fluctuations in the gate potential of the drive transistor, resulting in instability of the gate potential of the drive transistor

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