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Display device, pixel driving circuit and driving method thereof

A technology of a pixel driving circuit and a driving method, which is applied in the driving of a pixel driving circuit and in the field of a pixel driving circuit, and can solve problems such as short-term afterimages, appearance of afterimages, and disappearance of afterimages in OLED display devices, and achieve the effect of improving the problem of short-term afterimages

Active Publication Date: 2020-03-06
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem existing in related technologies is that short-term afterimages will occur in OLED display devices, that is, after a period of time after lighting the black and white checkerboard screen, if switching to a 48-gray-scale image, afterimages will appear, and after a period of time, afterimages will appear disappear

Method used

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  • Display device, pixel driving circuit and driving method thereof
  • Display device, pixel driving circuit and driving method thereof
  • Display device, pixel driving circuit and driving method thereof

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032]The applicant of the present application has discovered and realized that due to the hysteresis effect of the driving transistor, when the display device switches to a 48-gray-scale picture after turning on the black and white checkerboard picture for a period of time, afterimages will appear.

[0033] The short-term afterimage phenomenon of the display device is related to the hysteresis effect of the drive transistor, that is, the gate-source voltage V of the drive transistor in the initialization stage under different scr...

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Abstract

The invention discloses a display device, a pixel driving circuit and a driving method thereof. The pixel driving circuit includes N multiplexing units and N pixel units, and the first multiplexing unit of the N multiplexing units includes a multiplexing control module. And each of the 2nd multiplexing unit to the Nth multiplexing unit includes a multiplexing control module and a first reset module, wherein the ith multiplexing unit provides the data voltage of the data writing end to the ith multiplexing unit corresponding When the pixel unit is used, the first reset module in the (i+1)th multiplexing unit performs an output of the multiplexing control module in the (i+1)th multiplexing unit according to the power supply voltage provided by the power supply terminal of the corresponding pixel unit. The terminal voltage is reset, so that the data receiving terminal voltage of the pixel unit corresponding to the (i+1)th multiplexing unit is controlled at the power supply voltage before the compensation of the pixel threshold voltage, thus, by making the data receiving terminal voltage of the pixel unit be at the pixel threshold It is controllable before voltage compensation, so as to improve the short-term afterimage problem in the lighting stage.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a display device and a driving method of the pixel driving circuit. Background technique [0002] An OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display device is made by using an organic light-emitting diode, and the OLED is driven by a current to emit light. However, the problem existing in related technologies is that short-term afterimages will occur in OLED display devices, that is, after a period of time after lighting the black and white checkerboard screen, if switching to a 48-gray-scale image, afterimages will appear, and after a period of time, afterimages will appear disappear. Such as figure 1 As shown, when the OLED display device switches to the 48-gray-scale picture C after turning on the black and white checkerboard picture A10s, a short-term afterimage B will appear, and it takes 10s to tens of seconds fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3291G09G3/3233
CPCG09G3/3233G09G3/3291G09G3/3275G09G2310/0297G09G2300/0814G09G2300/0819G09G2300/0861G09G2300/0866G09G2300/0421G09G2300/0809G09G2320/0233G09G2320/0257G09G2330/02
Inventor 刘冬妮玄明花陈小川王磊方正肖丽陈亮杨盛际卢鹏程
Owner BOE TECH GRP CO LTD