Organic Light Emitting Display

一种发光显示器、有机的技术，应用在静态指示器、仪器等方向，能够解决驱动单元阈值电压偏移、像素可靠性降低、降低有机发光显示器寿命等问题

Active Publication Date: 2014-06-18
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the data voltage of the same polarity is repeatedly supplied to the gate of the driving unit, the threshold voltage of the driving unit is shifted due to the gate bias stress of the driving unit caused by the characteristics of the MOSFET structure.
Also, the drive unit deteriorates, so the reliability of the pixel decreases
Gate bias stress degrades the driving unit, thereby reducing the lifetime of OLEDs

Method used

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Examples

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Embodiment Construction

[0024] Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. It should be noted that if it is determined that the detailed description of well-known technologies may mislead the embodiments of the present invention, the detailed description will be omitted.

[0025] The invention described herein can be embodied in many different forms. For example, not all of the depicted components may be required, and some embodiments may include more, different, or fewer components than are expressly described in this document. Changes may be made in the arrangement and type of these components without departing from the spirit or scope of the claims.

[0026] The organic light emitting display according to the exemplary embodiment of the present invention additionally drives the ...

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Abstract

An organic light emitting display includes a display panel (10) including data lines (14), gate lines (15) crossing the data lines (14), and pixels (P) and a panel driving circuit which supplies a data voltage to the pixels of the display panel (10) during a power-on period and then is additionally driven for a predetermined power-on delay duration time delayed from a power-off start time of a power input signal. The panel driving circuit supplies a reverse polarity recovery voltage having a polarity opposite the data voltage to the pixels (P) or supplies a recovery voltage, which is different from a gate voltage of a driving element of each of the pixels (P), to a source terminal of the driving element of each pixel (P) for the predetermined power-on delay duration time.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2012-0145352 filed on December 13, 2012 and Korean Patent Application No. 10-2013-0060547 filed on May 28, 2013, which are incorporated herein in their entirety The contents are incorporated by reference. technical field [0002] Embodiments of the present invention relate to an organic light emitting display that provides a reverse polarity voltage to a pixel for restoring pixel reliability after a power supply of the organic light emitting display is turned off. Background technique [0003] Each pixel of the organic light emitting display includes an organic light emitting diode (OLED) having a self-luminous structure. The OLED is constructed by stacking organic compound layers including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like. OLEDs emit light when electrons and holes are combined in an organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G2320/048G09G2310/0251G09G3/3233G09G2320/043G09G2310/067G09G2310/0254G09G2330/027G09G3/3258G09G2360/16
Inventor 金承泰安炳喆金俊永尹重先
Owner LG DISPLAY CO LTD
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