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Organic luminescence display device and method for preparing the same

A display device and luminescence technology, which is applied in the direction of electroluminescence light source, organic semiconductor device, electric solid device, etc., and can solve the problem that emission defects cannot be prevented

Active Publication Date: 2007-07-25
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A period thickness can be too thin to prevent emission defects caused by particles

Method used

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  • Organic luminescence display device and method for preparing the same
  • Organic luminescence display device and method for preparing the same
  • Organic luminescence display device and method for preparing the same

Examples

Experimental program
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Embodiment 1

[0071] 15Ω / cm manufactured by Corning Inc. (Corning, NY) 2 (1200 Ȧ) ITO glass substrates were cut into 50mm x 50mm x 0.7mm pieces, and each piece was ultrasonically cleaned in isopropanol and deionized water for 5 minutes, followed by UV / ozone cleaning for 30 minutes to form the anode.

[0072] On this substrate, m-MTDATA was vacuum deposited to form a HIL with a thickness of 500 Ȧ. Hexanitrile hexaazatriphenylene was deposited by resistance heating on the HIL to form a charge generation layer with a thickness of 20 Ȧ. N,N'-bis(1-naphthyl)-N,N'-diphenylbenzidine (α-NPD) was vacuum-deposited on the charge generation layer to form a hole transport layer with a thickness of 200 Ȧ.

[0073] Vacuum deposition using organic vapor phase deposition (OVPD) was performed to form an EML with a thickness of about 300 Ȧ. Alq3 as an electron transport layer material was deposited on the EML to form an ETL with a thickness of about 300 Ȧ. LiF is vacuum deposited on the electron transport ...

Embodiment 2

[0075] This organic EL display device was produced in the same manner as in Example 1, except that the thickness of the charge generation layer was 50 Ȧ.

Embodiment 3

[0077] This organic EL display device was fabricated in the same manner as in Example 1, except that the thickness of the charge generation layer was 80 Ȧ.

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Abstract

An organic EL display device and a method of manufacturing the same are disclosed. One embodiment of the organic EL display device includes: a light-emitting layer between a first electrode and a second electrode; a hole injection layer and a hole transport layer between the first electrode and the light-emitting layer; and a charge generation layer between the hole injection layer and the hole transport layer. The charge generation layer between the hole injection layer and the hole transport layer results in a low driving voltage, high efficiency and a long lifespan of the organic EL display device.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2005-0126102 filed in the Korean Intellectual Property Office on December 20, 2005, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to an organic electroluminescence (EL) display device and a preparation method thereof, more particularly, to an organic EL display device having a charge generation layer between a hole injection layer and a hole transport layer and a preparation method thereof. Background technique [0004] Electroluminescence (EL) devices, which are self-luminous display devices, have a wide viewing angle, excellent contrast ratio, and fast response time. Depending on the material used to form the emission layer, EL devices can be classified into inorganic EL devices and organic EL devices. Organic EL devices are brighter than inorganic EL devices. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56H01L27/32H05B33/12H05B33/10H10K99/00
CPCH01L51/5048H01L51/0051H01L51/0072H01L51/0078H01L51/0081H01L2251/308H10K85/611H10K85/311H10K85/324H10K85/6572H10K50/14H10K2102/103C09K11/06H05B33/22Y10S428/917
Inventor 千民承金美更金东宪孙正河郭在见
Owner SAMSUNG DISPLAY CO LTD