Pixel circuit, driving method thereof, and display panel

Abstract

Disclosed are a pixel circuit, a driving method thereof, and a display panel. Wherein, the pixel circuit includes: a first sub-pixel circuit, which writes the first data voltage provided by the first data line under the control of the first scan line, and generates a compensation voltage at the first node; and at least one second sub-pixel circuit The pixel circuit uses the compensation voltage generated at the first node to perform threshold voltage compensation; wherein, based on the display mode, at least one second sub-pixel circuit writes the second data voltage provided by the second data line under the control of the second scanning line . According to the pixel circuit and its driving method and display panel of the present disclosure, the threshold voltage compensation of the driving transistor of the pixel circuit is combined with intelligent display, which can not only eliminate the influence of the drift of the threshold voltage on the driving current of the driving transistor, but also aim at Depending on the user's focus on the images displayed on the display panel, the visual resolution of each area of ​​the display panel can be adjusted in real time.

Description

technical field [0001] The present disclosure relates to the field of display technology, and in particular to a pixel circuit, a driving method thereof, and a display panel including the pixel circuit. Background technique [0002] With the rapid development of display technology, display screens using organic light-emitting diodes (Organic Light-Emitting Diode, OLED) are one of the hot spots in the field of flat panel display research. Compared with the existing liquid crystal display, it has the advantages of low energy consumption, self-illumination, wide viewing angle and fast response speed, etc. It is easy to match with the integrated circuit driver, and has a wide range of working temperature adaptability, light and thin volume, and easy to realize flexible display ,have a broad vision of application. Different from thin film transistor liquid crystal display (TFT-LCD) which uses voltage to control the brightness of light-emitting transistors, OLED is driven by curr...

AI Technical Summary

Problems solved by technology

However, due to the manufacturing process and device aging, in the existing pixel driving circuit, there is non-uniformity in the threshold voltage of the driving thin film transistor driving the light-emitting diode at each pixel point, which leads to the fact that even if the gate of each driving thin film transistor The same driving voltage is applied to each pole, and the current flowing through each OLED may also be different, thus affecting the display effect

[0003] In addition, when the current display screen displays images, the resolution of each area is the same, and it is impossible to dynamically adjust the resolution of a local area of ​​the display screen in real time according to the user's visual focus.

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