Pixel driving circuit, driving method thereof and display panel

Abstract

The embodiment of the invention provides a pixel driving circuit, a driving method thereof and a display panel, relates to the technical field of display, and can improve the display effect of the display panel. The pixel driving circuit comprises a driving sub-circuit which provides a driving signal for a to-be-driven element under the control of a first scanning signal end and an enable signal end; the driving signal is related to signals of a first data signal end and a first power supply voltage signal end; a time control sub-circuit writes in signals of a second data signal end and a second voltage signal end under the control of a second scanning signal end, writes in signals of a first voltage signal end under the control of an enable signal end, and transmits the signals of the second voltage signal end to a first node, so that the driving transistor is cut off, the working duration of the to-be-driven element is controlled; and the working duration of the to-be-driven element is related to signals of the second data signal end and the first voltage signal end.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method thereof, and a display panel. Background technique [0002] Self-luminous devices have attracted widespread attention due to their high brightness and wide color gamut. However, its transfer bonding technology is immature, and there is no corresponding glass-based driver backplane, which is limited when it is introduced to the consumer market. [0003] The size of the pixel driving circuit composed of miniature light-emitting devices is relatively small, which can be applied to the glass-based driving backplane. However, due to the uniformity of the manufacturing process, the turn-on voltage of the micro-light-emitting device will be inconsistent, and the photoelectric conversion characteristics (including photoelectric conversion efficiency, uniformity, and color coordinates, etc.) of the micro-light-emitting device will vary w...

AI Technical Summary

Problems solved by technology

However, due to the uniformity of the manufacturing process, the turn-on voltage of the micro-light-emitting device will be inconsistent, and the photoelectric conversion characteristics (including photoelectric conversion efficiency, uniformity, and color coordinates, etc.) of the micro-light-emitting device will vary with the current flowing. For example, at low current density, the luminous efficiency of micro-light emitting devices will decrease with the decrease of current density, resulting in high luminous power consumption. When it is applied to the display panel, it will affect the display effect of the display panel. cause a certain impact

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