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Organic light emitting diode display and fabricating method thereof

A light-emitting diode, an organic technology, applied in semiconductor/solid-state device manufacturing, photovoltaic power generation, electric solid-state devices, etc., can solve problems such as display quality defects, black grayscale contrast drop, etc.

Active Publication Date: 2014-05-07
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can cause defects in display quality such as flickering, or decrease in contrast due to degradation of black grayscale characteristics

Method used

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  • Organic light emitting diode display and fabricating method thereof
  • Organic light emitting diode display and fabricating method thereof
  • Organic light emitting diode display and fabricating method thereof

Examples

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Embodiment Construction

[0042] will refer to Figure 4 and 21 Preferred embodiments of the present invention are described in detail.

[0043] Figure 4-19b An inverted OLED structure is shown, in which the top electrode is the anode and the bottom electrode is the cathode.

[0044] Figure 4 A first embodiment according to the present invention shows a planar structure of a pixel in an OLED display device. Figure 5 showing along Figure 4 The cross-sectional structure cut by the line I-I' and line II-II'. and Figure 6 show Figure 5 Equivalent circuit diagram of a pixel in the OLED display device shown. exist Figure 4 and 5 In , for convenience, the gate pad, the data pad, the VDD supply pad and the VSS supply pad are not shown.

[0045] refer to Figure 4-6 , The OLED display device according to the first embodiment of the present invention includes: a gate line (GL), a data line (DL), a VSS supply line 111n, a switching TFT (SWTFT), a driving TFT (DRTFT) formed on a substrate 110 ,...

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PUM

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Abstract

The invention relates to an organic light emitting diode display and a fabricating method thereof. The organic light emitting diode display includes a switch TFT and a drive TFT formed on a substrate; an overcoat layer formed on the TFTs; a drain contact hole exposing portions of a drain electrode of the drive TFT by removing portions of the overcoat layer; a first electrode contacting to the drain electrode of the drive TFT; a bank pattern exposing an aperture area of a pixel; an organic layer formed on the first electrode; and a second electrode formed on the organic layer, wherein the bank pattern blocks regions where the drain contact hole is formed.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2008-0093424 filed on September 23, 2008, which is incorporated herein by reference as if fully set forth herein. technical field [0002] The invention relates to an organic light emitting diode display and a manufacturing method thereof. Background technique [0003] Recently, various flat panel display devices have been actively and widely introduced into display applications in order to overcome the disadvantages of heavy weight and large volume of cathode ray tubes. As these flat panel display devices, there are liquid crystal display (LCD) devices, field emission display (FED) devices, plasma display panel (PDP) devices, electroluminescent devices, and the like. [0004] Electroluminescent devices are classified into inorganic light emitting diode displays and organic light emitting diode displays according to the material of the light emitting layer. Because of the use of self-luminous mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L23/522H01L21/82H01L21/768
CPCH01L2924/0002Y02E10/549H01L2924/00H01L29/7809H01L21/02118H10B41/27H10K59/122H10K30/82
Inventor 崔熙东
Owner LG DISPLAY CO LTD