Konica-minolta Holdings, Inc.

Konica Minolta, Inc.

Konica Corporation

Merck Patent Gmbh

Konica Minolta Business Technologies, Inc.

Tomohiro Oshiyama

Hiroshi Kita

Eisaku Katoh

Masato Nishizeki

Yoshiyuki Suzuri

Shinya Otsu

Taketoshi Yamada

Noriko Ueda

Mitsuhiro Fukuda

Noriko Yasukawa

Dai Ikemizu

Rie Katakura

Haruo Horiguchi

Motoi Kinoshita

Tatsuo Tanaka

Toyoko Shibata

Kouji Sugama

Seijiro Takahashi

Yoshiko Iwai

Noboru Sekine

Yukiko Kusano

Satoru Inoue

Shigeto Hirabayashi

Hirofumi Hayata

Nobuaki Kagawa

Toshiyuki Fujita

Fumio Ishii

Yasuo Miyata

Osamu Ishige

Taketo Namikawa

Shuichi Oi

Hidekane Ozeki

Mayuka Hikime

Shinichi Daiba

Michihiro Okuyama

Tatsuya Hattori

Yoshio Inoue

Elsaku Kato

Mitsuhito Fukuda

Provided is a polymer that includes a predetermined structural unit derived from an azomethine derivative having a polymerizable group and is reversibly fluidized and non-fluidized by being irradiated with light.

Photoresponsive high-molecular weight material, adhesive, toner, and image forming method

Disclosed is a compound containing a specific structure having an azomethine part, the compound being reversibly fluidized and non-fluidized by being irradiated with light.

Photoresponsive low-molecular weight material, adhesive, toner, and image forming method

An organic electroluminescent device contains an anode, a cathode, and an organic layer containing at least one luminous layer. The organic layer is disposed between the anode and the cathode. At least one luminous layer contains a &#x3c0;-conjugated compound exhibiting no overlap between the electron density distributions of the HOMO and the LUMO in the molecule, such that electron transition between the HOMO and the LUMO occurs by a through-space interaction in the molecule. The &#x3c0;-conjugated compound has a &#x3c0;-conjugated aromatic ring at a moiety on which at least one of the HOMO and the LUMO is localized.

Organic electroluminescent device, thin luminous film, display apparatus, and lighting apparatus

An organic electroluminescence element includes: an anode; a cathode; and a luminous layer. The luminous layer includes: a luminescent dopant having a reorganization energy of 0 eV to 0.7 eV in electron transition from a ground state (S) to a lowest excited triplet state (T); and a host compound having a reorganization energy of 0 eV to 0.3 eV in electron transfer reaction between a ground state (S) and an anionic radical state (AR), and having a molecular weight within a range of 500 to 3000.

Organic electroluminescence element, illumination device, and display device

An electrophotographic photoreceptor according to the present invention includes a conductive support, a photosensitive layer, and a protective layer disposed in sequence. The protective layer includes a cured product of a composition containing a radically polymerizable compound, a charge transporting material exhibiting a maximal absorption wavelength of 405&#xb1;50 nm, and a photopolymerization initiator of a single-molecule system; and a following Expression (A) is satisfied:ox()&#x2212;red()&#x2212;0.2 [eV]&#x2003;&#x2003;Expression (A):G represents a free energy change, Eox(D/D) represents an oxidation potential of the charge transporting material, Ered(A/A) represents a reduction potential of the photopolymerization initiator, and E* represents an excitation energy of the charge transporting material.

Electrophotographic photoreceptor, image forming apparatus, image forming method, and method of producing electrophotographic photoreceptor

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.

Organic electroluminescent element, display device and lighting device

Provided are an organic electroluminescence device which has a high luminous efficiency, a low operating voltage and a long life and which is low in a voltage rise in operation and excellent in an ageing stability and has an aptitude in production by the wet process, and a lighting equipment and a display device which are prepared by using the same. The above organic electroluminescence device is constituted from organic layers including at least a light-emitting layer which are interposed between an anode and a cathode, wherein at least one layer of the above organic layers contains a blue phosphorescent organic metal complex having a structure represented by the following Formula (1) and a compound represented by the following Formula (H1): 

Organic electroluminescence device, lighting equipment and display device

An object of the present invention is to provide an organic electroluminescent element that has low drive voltage, high emission efficiency, long endurance and an excellent effect of preventing generation of dark spots. Another object of the present invention is to provide a lighting device and a display device each including the organic electroluminescent element. The organic electroluminescent element according to the present invention includes an anode, a cathode, and an emissive layer, and the organic electroluminescent element includes a layer containing compound A that has a difference of 0 nm or more and 5 nm or less between the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 300 K and the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 77 K.

Organic electroluminescent element, lighting device, and display device

An organic electroluminescent device containing: a six-coordinate, ortho-metalated iridium complex represented by the formula (I):  wherein V represents a trivalent linking group and is bound to Lto Lthrough covalent bonds; each of Lto Lis represented by the formula (II)  and Rrepresents a substituted aryl group having seven or more carbon atoms.

Organic electroluminescent device, display apparatus, and lighting apparatus

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 are: an organic EL material which emits light having a short wavelength and has high luminous efficiency and long light emission life; an organic EL element which contains the organic EL material; and a lighting device and a display device, each of which comprises the organic EL element. The organic EL material is a compound represented by Formula (1): 

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

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 Formula (AA): wherein A represents a group of atoms necessary to form an aromatic hydrocarbon ring or an aromatic heterocycle, B represents a group of atoms necessary to form a 5-membered aromatic heterocycle containing nitrogen or a 5-membered heterocycle containing nitrogen and M represents Ir or Pt, and a host compound represented by Formula (1): 

A material for an organic EL element showing high light emission efficiency and high color purity of the emission light, an organic EL element, a lighting device and a displaying device each using the material.

Organic electroluminescent element using iridium complex, display device and lighting device using iridium complex

Growing community of inventors

Hachioji, Japan

Tomohiro Oshiyama