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Display panel and pixel driving circuit of light emitting diode

A technology of pixel drive circuit and light-emitting diode, which is applied in static indicators, instruments, etc., can solve problems such as disappearance, achieve the effect of improving user experience and improving short-term afterimage problems

Active Publication Date: 2020-07-03
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, due to the hysteresis effect of DTFT, existing organic light-emitting diode (Organic Light-Emitting Diode, referred to as OLED) products will find afterimages when switching to 48-gray-scale images after lighting up black-and-white images for a period of time. The afterimage phenomenon will disappear after a period of time, this phenomenon is short-term afterimage

Method used

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  • Display panel and pixel driving circuit of light emitting diode
  • Display panel and pixel driving circuit of light emitting diode
  • Display panel and pixel driving circuit of light emitting diode

Examples

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Embodiment Construction

[0024] 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.

[0025] The following describes a display panel and a pixel driving circuit of a light emitting diode according to an embodiment of the present invention with reference to the accompanying drawings.

[0026] Before introducing the display panel and the pixel driving circuit of the light emitting diode according to the embodiment of the present invention, the hysteresis effect and the reason for the short-term afterimage will be introduced.

[0027] Specifically, as figure 2 As shown, when the picture changes from white to gray (...

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Abstract

The invention discloses a pixel driving circuit of a display panel and a light-emitting diode, comprising: a first power supply input terminal for inputting a first DC voltage; a second power supply input terminal for inputting a second DC voltage; a first drive signal terminal for For inputting the first driving signal; the second driving signal terminal is used for inputting the second driving signal; the data signal terminal is used for inputting data data voltage; the first terminal of the first transistor is connected with the second power supply input terminal; the cathode of the light-emitting diode is grounded ; the first driving unit is used to make the voltage at the control terminal of the first transistor equal to the first direct current voltage under the control of the first driving signal and the second driving signal in the initialization phase; the second driving unit is used in the initialization phase to Under the control of the first driving signal, the voltage at the first end of the first transistor is equal to the second DC voltage. As a result, the short-term afterimage problem caused by the hysteresis effect is greatly improved, and user experience is effectively improved.

Description

technical field [0001] The invention relates to the technical field of display control, in particular to a display panel and a pixel driving circuit of a light emitting diode. Background technique [0002] Such as figure 1 As shown, due to the hysteresis effect of DTFT, existing organic light-emitting diode (Organic Light-Emitting Diode, referred to as OLED) products will find afterimages when switching to 48-gray-scale images after lighting up black-and-white images for a period of time. The afterimage phenomenon will disappear after a period of time, and this phenomenon is short-term afterimage. For example, the 14inch OLED product of a related manufacturer switches to a 48-gray-scale screen after touching the black-and-white screen for 10 seconds, and the short-term afterimage will disappear after 2 seconds; for example, the related manufacturer Galaxy S6 switches to a 48-gray-scale screen after touching the black-and-white screen for 10 seconds, and the short-term after...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233G09G3/32
CPCG09G3/32G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0251G09G2310/0262G09G3/3258G09G3/3275G09G2300/043
Inventor 高雪岭彭宽军秦纬徐智强王铁石李小龙彭锦涛
Owner BOE TECH GRP CO LTD