Pixel driving circuit and driving method thereof, display panel and display device

Abstract

The present invention proposes a pixel driving circuit and its driving method, a display panel, and a display device, wherein the pixel driving circuit includes multiple rows and multiple columns of pixel units, and in each column of pixel units, the first clock in the current row of pixel units is When the potential is high and the second clock is low potential, the first capacitor is controlled to charge according to the high potential signal output from the output terminal of the pixel unit in the previous row; when the first clock is low potential and the second clock is high potential, the first capacitor is charged Output the stored high potential signal to the output terminal to control the light-emitting layer to emit light according to the high potential signal stored in the first capacitor; reset according to the high potential signal output from the output terminal of the pixel unit in the next row, and reset the output terminal of the pixel unit in the current row Set to low potential to realize row-by-row drive of pixel units in the same column. It solves the technical problem that the current OLED display panel in the prior art cannot realize a narrower frame or even a frameless design.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit and a driving method thereof, a display panel and a display device. Background technique [0002] Array substrate row drive (GOA) technology is to use the existing liquid crystal display panel array (Array) process to fabricate the gate row scanning drive signal circuit on the array substrate to realize the driving method of progressive scanning of the gate. Because the row driving technology of the array substrate can save the gate driver IC (gate IC) and reduce the width of the frame to a certain extent, it has been widely used in the design of organic light emitting diode (OLED) display panels. [0003] However, since the GOA circuit is set on both sides of the OLED display panel, the frame of the OLED display panel must be set with a certain width, which directly restricts the current OLED display panel from being able to achieve a narrower fr...

AI Technical Summary

Problems solved by technology

[0003] However, since the GOA circuit is set on both sides of the OLED display panel, the frame of the OLED display panel must be set with a certain width, which directly restricts the current OLED display panel from being able to achieve a narrower frame or even a frameless design. Therefore, It cannot meet the current demand for narrower borders or even borderless OLED products, and needs to be resolved urgently

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