Unlock instant, AI-driven research and patent intelligence for your innovation.

Organic electroluminescent device

An electroluminescent element and electroluminescent technology, applied in electroluminescent light sources, electrical components, electrical light sources, etc., can solve the problem of not being able to improve the luminous life of components

Inactive Publication Date: 2005-04-13
SANYO ELECTRIC CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although these methods can achieve longer wavelengths, they have not been able to improve the luminous lifetime of the device.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic electroluminescent device
  • Organic electroluminescent device
  • Organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0039] Using the materials shown in Table 1, a hole injection layer, a hole transport layer, a red-orange light-emitting layer, a blue light-emitting layer, an electron transport layer, and a cathode (electron injection electrode) were formed, and the values ​​in parentheses in the table represent each layer The thickness (nm).

[0040] The compound 1 used in the red-orange luminescent layer is the luminescent material of the present invention represented by the above formula (4), the compound 2 is the luminescent material of the present invention represented by the above formula (5), and the compound 3 is the luminescent material of the present invention represented by the above formula (6). The luminescent material of the present invention.

[0041] Compound 4 used in the blue light-emitting layer is 2-tert-butyl-9,10-bis(β-naphthalene)anthracene, which has the following structural formula.

[0042]

[0043] Compound 4

[0044] The perylene used in the blue light emitti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an organic electroluminescence element having a red-orange light-emitting layer and a blue light-emitting layer stacked between a pair of electrodes. The red-orange light-emitting layer of the device contains a light-emitting material represented by the following chemical formula (1), where R11~R15, R21~R25, R31~R35, and R41~R45 can be the same or different, and they are hydrogen , an alkyl group represented by -CnH2n+1 (n is an integer of 1 to 10), an alkoxy group represented by -OCnH2n+1 (n is an integer of 1 to 10), an alkoxy group represented by -N(CnH2n+1) 2 ( n is an integer of 1 to 10), represented by dialkylamino, fluorine, chlorine, bromine, iodine, cyano, or a heterocyclic group, and Ar1 to Ar4 are aromatic substituents, which may be the same or different.

Description

technical field [0001] The invention relates to a white-emitting organic electroluminescent element having a red-orange emitting layer and a blue emitting layer. Background technique [0002] In an organic electroluminescence element (hereinafter referred to as an organic EL element), white light can be emitted by laminating a red-orange light-emitting layer and a blue light-emitting layer as a light-emitting layer. Therefore, like a liquid crystal display device, by combining such an organic EL element emitting white light and a color filter, a full-color display can be formed. [0003] Naphthacene derivatives such as rubrene emit strong fluorescence and are widely known as light-emitting materials for organic EL devices that exhibit high luminance. However, rubrene emits yellow to orange light, and cannot be used as the above-mentioned red-orange light-emitting layer (Patent Document 1, etc.). [0004] Therefore, long-wavelength emission of rubrene and the like has been ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06H05B33/12H05B33/14H05B33/20H05B33/22H10K99/00
CPCC09K11/06C09K2211/1011H05B33/14Y02B20/00H10K59/38H10K85/656H10K85/622H10K85/631H10K85/324H10K50/13
Inventor 浜田祐次
Owner SANYO ELECTRIC CO LTD