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Organic electroluminous device and method of driving said device

An electroluminescent device and driving method technology, applied in electroluminescent light sources, electroluminescent light sources, identification devices, etc., can solve the problems of deterioration of characteristics, harmfulness, inability to conduct reverse conduction of electroluminescent units, etc., so as to prevent characteristics from changing. poor effect

Inactive Publication Date: 2009-04-29
LG DISPLAY CO LTD
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Problems solved by technology

[0025] When driving the OELD of the prior art in Fig. 2, since the silicon channel trap phenomenon occurs in the junction region between the gate insulating film and the silicon layer of each driving TFT and charges are introduced, so will cause image 3 and Figure 5 The characteristics of the driving TFTs (i.e., the second and first TFTs T2 and T1, respectively) shown in
Therefore, the current between the poles of the first and second TFTs T1 and T2 controlled by the data voltage DATA applied to the poles of the first and second TFTs T1 and T2 will be as Figure 7 detrimental and irreversible effects as indicated
Therefore, after the electroluminescent unit is turned off, the same current cannot be applied to make the electroluminescent unit reverse conduction

Method used

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  • Organic electroluminous device and method of driving said device
  • Organic electroluminous device and method of driving said device
  • Organic electroluminous device and method of driving said device

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Embodiment Construction

[0096] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0097] Fig. 8 shows the pixel structure in the organic electroluminescent device according to the first aspect of the present invention, and Figure 9 A pixel equivalent circuit diagram of the organic electroluminescent device shown in FIG. 8 is shown according to the first aspect of the present invention.

[0098] Referring to Figure 8 and Figure 9 According to the organic electroluminescent device (OELD) described in the first aspect of the present invention, for example, it may include m column lines CL1-CLm, n row lines RL1-RLn, and the column lines CL1-CLm and row lines intersected by m×n pixels P in the matrix pattern formed by the lines RL1-RLn.

[0099] Furthermore, according to the principle described in the first aspect of the present invention, the OELD may include, for example, a cell driving voltage source. According to...

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Abstract

An active matrix organic electro luminescence display panel device includes a substrate, at least one low refractive thin film formed on the substrate, and an organic electro luminescence diode formed on the low refractive thin film to selectively emit light. Also, a method of fabricating an active matrix organic electro luminescence display panel device includes the steps of forming at least one low refractive thin film on a substrate, and forming an organic electro luminescence diode on the low refractive thin film to selectively emit light.

Description

[0001] This application claims the benefit of Korean Patent Application No. P2002-039470 filed on Jul. 8, 2002, which is hereby incorporated by reference for all purposes covered by this application. technical field [0002] The present invention relates to an organic electroluminescence device, and more particularly, the present invention relates to an organic electroluminescence device and a method of driving the same which can prevent performance degradation of a driving thin film transistor (TFT). Background technique [0003] Hitherto, cathode ray tubes (CRTs) have been commonly used in display systems. However, newly developed flat panel displays such as liquid crystal displays (LCDs), field-luminescence displays (FEDs), plasma display panels (PDPs) and electroluminescence (EL) devices, etc. , making their use more and more common. [0004] A PDP having a thin size, a light weight, and a large display area has a simple structure and is relatively easy to manufacture. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/30H01L27/00H05B33/00G09F9/30G09G3/20G09G3/32H01L27/32H01L51/50H01L51/52
CPCH01L27/3262G09G2300/0852G09G2300/0842G09G2320/043G09G2300/0809G09G3/3241G09G2320/0257G09G3/3233G09G2300/0819G09G2310/0254H10K59/1213G09G3/30
Inventor 朴在用朴俊圭金玉嬉
Owner LG DISPLAY CO LTD
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