Konica-minolta Holdings, Inc.

Konica Minolta, Inc.

Konica Corporation

General Electric Company

Merck Patent Gmbh

Konica Minolta Advanced Layers, Inc.

Eisaku Katoh

Shinya Otsu

Tomohiro Oshiyama

Hiroshi Kita

Tatsuo Tanaka

Shuichi Sugita

Noriko Yasukawa

Rie Katakura

Masato Nishizeki

Shuji Kida

Yoshiyuki Suzuri

Masayuki Ushiku

Hideo Taka

Noriko Ueda

Mitsuhiro Fukuda

Yoshinori Tsubaki

Motoaki Sugino

Rie Fujisawa

Osamu Hatano

Atsushi Tomotake

Osamu Ishige

Dai Ikemizu

Hidekane Ozeki

Kenzo Nakazawa

Jie Jerry Liu

James Anthony Cella

Shigeto Hirabayashi

Qing Ye

Keiji Ohbayashi

Kunimasa Hiyama

Kunio Tani

Toshihiko Iwasaki

Junji Ito

Hiroto Itoh

Hiroto Ito

Tetsuya Yoshida

Yukako Taka

Hiroko Fujiwara

Manabu Shibata

Junko Tamura

Aki Nakata

Mayuka Hikime

Jie Liu

Kaori Ono

Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.

Organic electroluminescent element, display device and lighting device

A wet process using an organic solvent is used to produce an organic EL element, which has high light emission efficiency, a long light emission life and a small color change when continuously driven, an illuminating device and a display device are provided. Especially, an organic EL element which emits white light and can be manufactured at low cost is provided.

An organic electroluminescent element includes a hole injection layer (HI), a first hole transport layer (HT1), a second hole transport layer (HT2), and a light-emitting layer containing a host compound (H) and a phosphorescence emitting dopant compound (D), which are laminated in this order, between and an anode and a cathode. The phosphorescence emitting dopant compound has a partial structure represented by Formula (1):  The 'highest occupied molecular orbital' HOMO of the second hole transport layer satisfies the expression: &#x2212;5.4&#x3c;HOMO (HT2)&#x3c;&#x2212;4.8; and the relationship of triplet excitation energies (T1) between the phosphorescence emitting dopant compound and a hole transport material contained in the second hole transport layer satisfies the expression: T1 (HT2)&#x2212;T1 (D)&#x3e;0.1.

Organic electroluminescent element

Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of &#x2212;5.15 to &#x2212;3.50 eV and a LUMO of from &#x2212;1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60&#xb0; C.

Organic electroluminescent element, display device and illuminating device

Provided is an o organic electroluminescence element comprising an anode, a cathode and a plurality of composing layers including a light emitting layer sandwiched between the anode and the cathode, wherein an electron transport layer containing the compound represented by Formula (1) is included in the composing layers; the light emitting layer contains a phosphorescence emitting organic metal complex; and the cathode or one composing layer adjacent to the cathode contains a metal or a metal compound belonging to Group 1 or Group 2 of the periodic table of elements, provided that the metal exhibits a standard electrode potential larger than &#x2212;3 V vs. SHE in a system of the metal ion (M)/the metal (M): 

Organic electroluminescent element, and illumination device and display device each comprising the element

An organic electroluminescent element containing an anode and a cathode having therebetween a light emitting layer, wherein the light emitting layer contains a guest compound having a substructure represented by the following Formula (A): wherein Ra represents alkyl, alkenyl, alkynyl, cycloalkyl, aromatic hydrocarbon, aromatic heterocyclic or heterocyclic, Rb and Rc represent hydrogen or a substituent, A1 represents a group of atoms which forms an aromatic hydrocarbon ring or an aromatic heterocycle, M represents Ir or Pt, and a host compound having the following Formula (1): wherein Rarepresents alkyl, alkenyl, alkynyl, cycloalkyl or heterocyclic, R, Rand Reach represent hydrogen or a substituent, and n1, n2 and n5 each represent 0 to 4.

Organic electroluminescent element, illuminator and display

This invention provides an organic EL element, which can control luminescence wavelength, exhibits high luminescence efficiency, and has a prolonged emission life, and a lighting equipment and a display device. They can be realized by an organic electroluminescent element material characterized by a metal complex having a structure represented by the following general formula (A) as a partial structure.

Organic electroluminescent element material, organic electroluminescent element, display device, and lighting device

Disclosed is an organic electroluminescent element which is characterized in that constituent layers including at least a phosphorescent light-emitting layer are provided between a pair of electrodes, and at least one of the constituent layers contains a compound represented by general formula (1). (In the formula, A, Aand Aeach represents a substituent; n1 and n2 each represents an integer of 0-3; Xand Xeach represents an oxygen atom, a sulfur atom, an alkylene group, an imino group, a carbonyl group, a sulfoxide group or a sulfonyl group, or alternatively Xrepresents a bonding hand; and Z, Z, Zand Zeach represents an optionally substituted aromatic heterocyclic ring or an aromatic hydrocarbon ring, provided that all of the Z, Z, Zand Zare not aromatic hydrocarbon rings at the same time.) 

Organic electroluminescent element, display device, illuminating device and condensed polycyclic heterocyclic compound

Growing community of inventors

Hachioji, Japan

Eisaku Katoh