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Pixel circuit and display device including the same

A technology for a pixel circuit and a display device, which is applied to static indicators, instruments, etc., can solve the problems of low reverse bias voltage level, an increase in the non-display area of ​​the display device, and limitations in improving the reliability of the display device, etc. achieve the effect of ensuring reliability

Pending Publication Date: 2021-04-09
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technique may require an additional voltage source for applying a reverse bias voltage, so that the non-display area of ​​the display device may increase
As an example, since the voltage level of the reverse bias voltage may be low, there may be limitations in improving transient afterimages and thus ensuring the reliability of the display device

Method used

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  • Pixel circuit and display device including the same
  • Pixel circuit and display device including the same
  • Pixel circuit and display device including the same

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Embodiment Construction

[0038]The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] In order to describe the embodiments of the present disclosure, some parts not related to the description may not be provided, and the same reference numerals refer to the same elements throughout the specification.

[0040] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Throughout the disclosure, the expression "at least one of a, b and c" means only a, only b, only c, both a and b, both a and c, both b and c, a, b and c all of , or variants thereo...

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PUM

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Abstract

Provided are a pixel circuit and a display device having the pixel circuit. The pixel circuit includes an organic light emitting diode, a switching transistor, a storage capacitor, and a driving transistor. The switching transistor is turned off when a scan signal has a first voltage and turned on when the scan signal has a second voltage. The storage capacitor stores a data voltage when the switching transistor is turned on in response to the scan signal. The driving transistor is electrically connected with the organic light emitting diode between a high power supply voltage and a low power supply voltage to provide a driving current to the organic light emitting diode, and includes a first bottom gate electrode that is provided with the first voltage. The driving current corresponds to the data voltage stored in the storage capacitor.

Description

technical field [0001] The embodiments generally relate to a pixel circuit and a display device including the pixel circuit. Background technique [0002] Recently, organic light-emitting display devices are mainly researched among various display devices. The organic light emitting display device may include pixel circuits, and each pixel circuit may include a thin film transistor, at least one capacitor, and at least one organic light emitting diode. [0003] The thin film transistor may include a driving transistor and a switching transistor, the driving transistor may supply a driving current to the organic light emitting diode, and the switching transistor may be turned on or off in response to a scan signal to transmit a data voltage to the driving transistor. Meanwhile, since the leakage current of the driving transistor increases when the pixel circuit is driving, a transient afterimage of the display device may occur. [0004] As an example, since on / off character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3233G09G3/3291
CPCG09G3/3208G09G3/3233G09G3/3291G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/0214G09G2320/0257G09G2300/0404G09G2300/0439G09G2300/0809G09G3/3258G09G3/3266G09G3/3275G09G2300/0871G09G2310/0202G09G2310/08G09G2330/02
Inventor 崔贞美黄荣仁金应泽梁容豪曺柱铉秋性伯
Owner SAMSUNG DISPLAY CO LTD