Process for preparing organic electroluminescent device

• US 20060051497A1
• Filed: 03/22/2005
• Published: 03/09/2006
• Est. Priority Date: 03/31/2004
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Hamada, Yuji, Kanno, Hiroshi, Nishimura, Kazuki
• Application Number:
  US11/085,233
• Publication Number:
  US 20060051497A1
• Time in Patent Office: Days
• US Class Current: 427/66
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/16 using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons

Abstract

A process for preparing an organic electroluminescent device in which a hole transporting layer, a first light emitting layer, and a second light emitting layer are disposed between a pair of electrodes, the first light emitting layer contains at least one dopant material and host material and, the host material is the same compound as a hole transporting material of the hole transporting layer, characterized in that the hole transporting layer and the first light emitting layer are continuously formed in the same chamber.

Claims

1. In a process for preparing an organic electroluminescent device in which a hole transporting layer, a first light emitting layer, and a second light emitting layer are disposed between a pair of electrodes, the first light emitting layer contains at least one dopant material and host material and, the host material is the same compound as a hole transporting material of the hole transporting layer,

said process for preparing an organic electroluminescent device characterized by continuously forming the hole transporting layer and the first light emitting layer in the same chamber.

2. The process for preparing an organic electroluminescent device according to claim 1, wherein the first light emitting layer is an orange emitting layer, and the second light emitting layer is a blue emitting layer.

3. The process for preparing an organic electroluminescent device according to claim 1, wherein the hole transporting layer and the first light emitting layer are continuously formed by changing a deposition source by a vacuum deposition method.

4. The process for preparing an organic electroluminescent device according to claim 1, wherein the hole transporting material and the host material are a triarylamine derivative.