ORGANIC ELECTROLUMINESCENT DEVICE, ILLUMINATING DEVICE AND DISPLAY

WIPO Patent Application WO/2007/145129

A1

Disclosed is a means for extending the life of an organic EL device. Also disclosed are an illuminating device and a display, each having long life by using the means. Specifically disclosed is an electroluminescent device comprising at least a light-emitting layer including a host material and a dopant material and a hole transporting layer between a cathode and an anode opposite to each other. This electroluminescent device is characterized in that an intermediate layer is formed in contact with the anode-side surface of the light-emitting layer, and the hole transporting layer is arranged on the anode-side surface of the intermediate layer. The electroluminescent device is further characterized in that the ionization potential E1 of the hole transporting material constituting the hole transporting layer, the ionization potential E2 of the intermediate material constituting the intermediate layer, the ionization potential E3 of the host material, and the ionization potential E4 of the dopant material satisfy the following relations (2) and (3). (2) E1 < E2 ≤ E3 (3) E2 > E4

WO/2005/013387	ORGANIC ELECTROLUMINESCENT DEVICE
JP3834954	HOLE TRANSFER MATERIAL HAVING SILACYCLOPENTADIENE RING
WO/2013/165358	TILED ARRAY DISPLAY SYSTEM WITH REDUCED VISIBILITY OF MULLION REGION

NAITO MITSUYOSHI (JP)
SUZURI YOSHIYUKI (JP)
NAKATA AKI (JP)
KITA HIROSHI (JP)

PCT/JP2007/061542

December 21, 2007

June 07, 2007

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KONICA MINOLTA HOLDINGS INC (JP)
NAITO MITSUYOSHI (JP)
SUZURI YOSHIYUKI (JP)
NAKATA AKI (JP)
KITA HIROSHI (JP)

H01L51/50; C09K11/06

WO2007069539A1

2007-06-21

JP2006114918A	2006-04-27
JP2005268022A	2005-09-29
JP2006310815A	2006-11-09
JP2007220721A	2007-08-30
JP2006032599A	2006-02-02

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