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A display device and its driving method

A technology for display devices and display panels, which is applied to static indicators, instruments, etc., and can solve the problems of incomplete grounding of data lines, no consideration of residual charge in pixel areas, abnormal charge display, etc.

Active Publication Date: 2021-06-18
NANJING BOE DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the power supply voltage VDD or the analog positive voltage AVDD drops too fast, the data line will be incompletely grounded, and the residual charge in the data line cannot be fully released.
In addition, the above technical solutions do not take into account the residual charge inside the pixel region, such as the charge remaining at the interface of the pixel electrode, alignment film, etc.
[0006] And when the display device is turned on and off, the residual charge in the pixel area will cause instantaneous display abnormalities

Method used

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  • A display device and its driving method

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Embodiment Construction

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0039] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

[0040] figure 2 It is a schematic diagram of the structure of the display device of the...

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Abstract

The invention discloses a display device and its driving method. The display device includes: a display panel and a clearing voltage generation module. A plurality of pixel areas and a plurality of clearing voltage lines are defined; the clearing voltage generation module outputs the clearing voltage to the clearing voltage line, and outputs the common voltage to the common electrode; each pixel area is provided with a first thin film transistor and a second thin film transistor; The gate of the second thin film transistor is connected to the clearing voltage line, the source is connected to the pixel electrode, and the drain is connected to the common voltage line; The pixel electrode connected to it is short-circuited with the common electrode, and the display screen is in a black state without flickering; at the same time, the residual charge in the pixel area is completely released; the invention also discloses its driving method.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display device and a driving method thereof. Background technique [0002] Such as figure 1 As shown, the display device in the prior art is provided with criss-cross scan lines and data lines, and a pixel area defined by intersections of the scan lines and data lines, and a first thin film transistor 21 and a pixel electrode are provided in the pixel area. When the first thin film transistor 21 is turned off, the potential of the pixel area is mainly maintained by the liquid crystal capacitor Clc and the storage capacitor Cst. Due to charging and displaying images for a long time, charges will accumulate in the liquid crystal capacitors in the pixel area. [0003] When the display device is turned off, that is, when its power supply is turned off, all the first thin film transistors 21 are turned off, and some residual charges cannot be released immediately. Since ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/36
CPCG09G3/20G09G3/36G09G3/3648
Inventor 叶纯邢程杨钰婷
Owner NANJING BOE DISPLAY TECH CO LTD
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