Pixel driving circuit, driving method of pixel driving circuit, and display panel

A technology of a pixel driving circuit and a driving module, which is applied in the field of pixel driving circuits, driving methods of pixel driving circuits, and display panels, and can solve problems such as conflicts between refresh frequency and resolution of display panels, so as to ensure normal writing and improve uniformity. performance, and the effect of improving accuracy

Active Publication Date: 2022-02-22
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The duration of compensating the threshold voltage of the drive transistor in the data writing phase is easily affected by the refresh rate and resolution of the display panel, resulting in a contradiction between the threshold voltage compensation effect of the drive transistor and the refresh rate and resolution of the display panel

Method used

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  • Pixel driving circuit, driving method of pixel driving circuit, and display panel
  • Pixel driving circuit, driving method of pixel driving circuit, and display panel
  • Pixel driving circuit, driving method of pixel driving circuit, and display panel

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0039] figure 1 It is a structural schematic diagram of an existing pixel driving circuit. Such as figure 1 As shown, the pixel driving circuit includes a driving transistor Mdr, a first transistor M1, a second transistor M2, a third transistor M3, a fourth transistor M4, a fifth transistor M5, a sixth transistor M6, a storage capacitor C1 and a light emitting device D1. Exemplarily, the driving transistor Mdr, the first transistor M1, the second transistor M2, the third transistor M3, the fourth transistor M4, ...

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Abstract

The invention discloses a pixel driving circuit, a driving method of the pixel driving circuit and a display panel. The pixel driving circuit includes a driving module, a compensation module, a coupling module, an initialization module, a data writing module and a light emitting module; the initialization module is used to initialize the coupling module; the compensation module is used to compensate the threshold voltage of the driving module to the coupling module; The data writing module is used for writing data voltage to the coupling module; the driving module is used for outputting a driving signal according to the data voltage, and driving the light emitting module to emit light. When the display panel has a high resolution or a high refresh rate, the threshold compensation time of the driving module of the pixel drive circuit can be independent of the resolution and refresh rate of the display panel, so that it can be flexibly adjusted according to the time required for threshold compensation The timing of the second stage of the pixel driving circuit improves the accuracy of the threshold compensation, ensures the compensation effect of the threshold voltage, and improves the uniformity of the display panel.

Description

technical field [0001] The embodiments of the present invention relate to the field of display technology, and in particular, to a pixel driving circuit, a driving method of the pixel driving circuit, and a display panel. Background technique [0002] The pixel driving circuit in the display panel includes driving transistors. Since the characteristics of the driving transistors corresponding to different sub-pixels on the display panel are different, it is easy to cause uneven display on the display panel. In the prior art, a threshold compensation transistor is added to the pixel driving circuit for compensating the threshold voltage of the driving transistor in the data writing stage, thereby improving the display uniformity of the display panel. The duration of compensating the threshold voltage of the driving transistor in the data writing phase is easily affected by the refresh rate and resolution of the display panel, resulting in a contradiction between the compensat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225G09G3/30
CPCG09G3/3225G09G3/30
Inventor 张衎
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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