Pixel circuit, driving method and display

Abstract

The embodiment of the invention provides a pixel circuit, a driving method and a display. The pixel circuit comprises a data writing unit, a driving unit, a light emitting unit and an initializing unit. The data writing unit is electrically connected with the driving unit through the first node. The driving unit is electrically connected with the initialization unit through a second node. The driving unit is electrically connected with the light-emitting unit and the initialization unit through a third node. The initialization unit is used for initializing the second node by using the initialization voltage. And the data writing unit is used for setting the voltage of the first node as the voltage of the data signal and updating the voltage of the second node through the driving unit and the initialization unit. The driving unit is used for generating driving current to drive the light-emitting unit to emit light according to the first control signal. Due to the fact that initialization and voltage compensation of the second node are achieved at the same time through the path of the initialization unit, electric leakage paths of the storage capacitor are reduced, the electric leakage amount of the storage capacitor in the light emitting stage is reduced, and the quality of a display image is improved.

Description

technical field [0001] The invention relates to the technical field of electronic displays, in particular to a pixel circuit, a driving method and a display. Background technique [0002] In an existing pixel circuit, generally a light emitting diode in the pixel circuit is driven to emit light through a thin film transistor, and this thin film transistor is called a driving transistor. The driving transistor works in a saturated state, because in the saturated state, the sensitivity of the driving current output by the driving transistor to the source-drain voltage is lower than that of the driving transistor in the linear state, which can provide a more stable driving current for the light emitting diode. figure 1 For the existing most basic pixel circuit, such as figure 1 As shown, the pixel circuit is composed of two transistors T11 and T12, and a capacitor C11. When the Sn signal controls the transistor T12 to be turned on, the data signal data is written into the N1 ...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a pixel circuit, a driving method, and a display, which are used to solve the problem of uneven and flickering display screens caused by current leakage of existing pixel circuits

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