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Organic light emitting display device and its mfg. method

A technology for display devices and organic layers, which can be used in identification devices, lighting devices, electroluminescent light sources, etc., and can solve the problems of increased production costs

Inactive Publication Date: 2005-11-16
SAMSUNG MOBILE DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the method of forming an electrical reaction barrier layer such as Mo or MoW on the Al layer involves an additional process, resulting in an increase in production cost

Method used

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  • Organic light emitting display device and its mfg. method
  • Organic light emitting display device and its mfg. method
  • Organic light emitting display device and its mfg. method

Examples

Experimental program
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Embodiment Construction

[0021] Such as Figure 1A As shown, the buffer layer 110 (or diffusion barrier layer) can be deposited on the substrate 100 by plasma enhanced chemical vapor deposition (PECVD), low pressure chemical vapor deposition (LPCVD), sputtering and other methods. This may be done to prevent impurities such as metal ions from the substrate 100 from diffusing and penetrating into the active layer (polysilicon).

[0022] The substrate 100 may be a suitable substrate such as a glass or plastic substrate.

[0023] After the buffer layer 110 is formed, an amorphous silicon (amorphous Si) layer may be deposited on the buffer layer 110 by using methods such as PECVD, LPCVD, and sputtering. Dehydrogenation can then be carried out in a vacuum furnace. When the amorphous silicon layer is deposited by LPCVD or sputtering, dehydrogenation may not be required.

[0024] Polysilicon may be formed by crystallizing the amorphous silicon layer by using an amorphous silicon crystallization process in w...

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PUM

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Abstract

An organic light emitting display device capable of preventing electrical reaction between source and drain electrodes and pixel electrodes and preventing voltage drop of metal lines. The organic light emitting display device may include an active layer formed on a substrate; a gate electrode formed on a gate insulating layer; a metal line formed on an interlayer insulating layer; and electrically connected to source and drain regions through a contact hole. A source electrode and a drain electrode and a pixel electrode electrically connected to one of the source electrode and the drain electrode. The source and drain electrodes and the metal lines are formed of a material having low resistance and having an oxidation-reduction potential difference of about 0.3 or less with respect to the pixel electrode.

Description

technical field [0001] The present invention relates to an organic light emitting display device, in particular to an organic light emitting display device capable of preventing galvanic reaction between source and drain electrodes and pixel electrodes and preventing voltage drop of metal lines. Background technique [0002] A galvanic effect occurs when two metals come into close proximity. When the two metals are close enough, voltages and currents are generated because of the redox potential difference between the two dissimilar metals. Among such dissimilar metals in electrical contact, the highly active (low potential) metal acts as the anode and the less active (high potential) metal acts as the cathode because of the difference in work function at the interface of the two metals. [0003] When two metals are exposed to a corrosive solution, the potential difference between the two metals causes corrosion of the two metals. This may be referred to as galvanic corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/02G02F1/1333G09F9/30H01L21/77H01L27/12H01L27/32H01L29/45H01L51/50H05B33/14H05B33/26H05B33/28H05B44/00
CPCH01L27/3248H01L27/3276H01L29/458H10K59/123H10K59/131E06B3/9685E06B3/9648
Inventor 申铉亿
Owner SAMSUNG MOBILE DISPLAY CO LTD