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Driving method of display panel, driving chip and display device

A display panel and driving method technology, applied to static indicators, instruments, etc., can solve problems such as uneven display, residual image, and affecting display performance, and achieve the effect of increasing the number of charging times and speeding up the speed

Active Publication Date: 2019-08-02
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology

[0005] In order to drive the normal light emission of the OLED display panel, there are multiple pixel circuits in the display panel, and each pixel circuit includes a driving transistor and a plurality of switching transistors. The problem of uneven display caused by the threshold voltage drift of the driving transistor. However, when the display panel is switching between high and low grayscale images, affected by the hysteresis effect of the driving transistor, image sticking will occur and affect the display performance.

Method used

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Embodiment Construction

[0037] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should be understood that the term "an...

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Abstract

The embodiment of the invention provides a driving method of a display panel, a driving chip and a display device in the technical field of display, and is used for improving the ghost shadow phenomenon and improving display performance. The driving method comprises the steps of monitoring a static pattern displayed by the display panel in a first driving mode and when the display brightness value of the area where a static pattern is located and display brightness value of an area where the surrounding pattern is located meet preset conditions, defining the area where the static pattern is located as a target area; driving a pixel circuit in the target area in a second driving mode, in a second drive mode, enabling the grid line to scan the pixel circuit at a second frequency; wherein inthe first driving mode, the second frequency is greater than the first frequency of scanning the pixel circuit by the grid line, wherein in the second driving mode, the driving period of the pixel circuit comprises a signal switching period, an initialization period, a data signal writing period and a light emitting period, and in the signal switching period, the data line writes different data signals into the pixel circuit.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of display technology, in particular to a driving method of a display panel, a driving chip and a display device. [0003] 【Background technique】 [0004] Currently, organic light emitting display (OLED for short) display panels are more and more widely used due to their excellent characteristics such as self-illumination, high brightness, wide viewing angle, and fast response. [0005] In order to drive the normal light emission of the OLED display panel, there are multiple pixel circuits in the display panel, and each pixel circuit includes a driving transistor and a plurality of switching transistors. The problem of uneven display caused by the threshold voltage drift of the driving transistor. However, when the display panel is switching between high and low grayscale images, affected by the hysteresis effect of the driving transistor, image sticking will occur and affect the display performance. [0006]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3275G09G3/3266
CPCG09G3/3266G09G3/3275G09G2320/0257
Inventor 刘丽媛熊志勇范刘静朱见杰
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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