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A pixel driving circuit, a driving method thereof, and a display device

A pixel driving circuit and driving circuit technology, applied in static indicators, instruments, etc., can solve the problem of uneven display brightness of display devices, and achieve the effect of avoiding uneven brightness and avoiding non-uniformity

Active Publication Date: 2020-07-24
HEFEI BOE DISPLAY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a pixel driving circuit, its driving method, and a display device, which are used to solve the problem of non-uniform display brightness of the display device due to the non-uniformity of the driving circuit in the display device

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  • A pixel driving circuit, a driving method thereof, and a display device
  • A pixel driving circuit, a driving method thereof, and a display device
  • A pixel driving circuit, a driving method thereof, and a display device

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Embodiment Construction

[0061] In order to further illustrate the pixel driving circuit, its driving method, and the display device provided by the embodiments of the present invention, a detailed description will be given below in conjunction with the accompanying drawings.

[0062] At present, the main way to drive OLED display devices to emit light is: by changing the control terminal voltage of the driving circuit in the pixel driving circuit, controlling the magnitude of the driving current generated by the driving circuit, and then realizing the light emitting element connected to the output terminal of the driving circuit. The brightness is controlled, but since the size of the driving current is not only related to the control terminal voltage of the driving circuit, but also related to the threshold voltage of the driving circuit itself, and as the size of the OLED device gradually increases, in the production of large-sized OLED display devices , the manufactured drive circuit has non-unifor...

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Abstract

The invention discloses a pixel driving circuit, a driving method thereof, and a display device, which relate to the technical field of display, and solves the problem of uneven brightness display ofthe display device due to non-uniformity of the driving circuit in the display device. The pixel driving circuit comprises: a driving circuit, a storage circuit, a data write-in circuit, a charging and discharging control circuit, and a compensation circuit, the charging and discharging control circuit is configured to control to conduct or disconnect the connection between a first level signal input end and a control end of the driving circuit under the control of a first scanning signal end and a second scanning signal end, and control to conduct or disconnect the connection between a secondend of the compensation circuit and the control end of the driving circuit; the compensation circuit is configured to control to conduct or disconnect the connection between the first end of the compensation circuit and the second end of the compensation circuit under the control of the control end of the driving circuit. The pixel drive circuit is used for driving a light-emitting component to display.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method thereof, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display device has many advantages such as self-illumination, ultra-thin, fast response speed, high contrast ratio, wide viewing angle, etc., and is a display device that has attracted extensive attention at present. With the gradual increase in the size of OLED display devices, when making large-size OLED display devices, the drive circuit produced has non-uniformity in electrical parameters such as threshold voltage and mobility, and this non-uniformity will be transformed into The current difference and brightness difference of the OLED display device lead to uneven display brightness of the display device. Contents of the invention [0003] The purpose of the present invention is to provide a pixel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225G09G3/3266
CPCG09G3/3225G09G3/3266G09G2320/0233
Inventor 陈沫陈凯韩飞李方庆吴旺娣
Owner HEFEI BOE DISPLAY TECH CO LTD