Idemitsu Kosan Company, Limited

Panasonic Corporation

Hiroshi Tokailin

Chishio Hosokawa

Masahide Matsuura

Yoshikazu Nagasaki

Mitsuru Eida

Hisahiro Higashi

Tadashi Kusumoto

Toshio Sakai

Tadao Shibuya

Kazuyoshi Inoue

Masakazu Funahashi

Kenichi Fukuoka

Hitoshi Kuma

Hiroaki Nakamura

Mineyuki Kubota

Yoshio Hironaka

Tadashi Kusomoto

An apparatus and a corresponding process for producing an organic EL display device comprising a first unit for carrying a supporting substrate in, a second unit for heating at least the supporting substrate before forming an organic luminescence medium, thereby performing a dehydration treatment, a third unit for forming the organic luminescence medium and an upper element, and a fourth unit for sealing the periphery of the apparatus with a sealing member, wherein the first unit is arranged between the second unit and the third unit, a first carrying device is set up in the first unit, and a second carrying device is arranged between the third unit and the fourth unit.

Process for producing an organic EL display device using different processing units for each of the manufacturing stages

A white organic electroluminescent device () including an emitting layer (and) interposed between an anode () and a cathode (), the emitting layer (and) emitting blue light, green light and red light, the emitting layer () containing a green dopant that is an aromatic amine compound represented by formula (), wherein A, Aand Rare a hydrogen atom, an alkyl group, an aryl group, a cycloalkyl group, an alkoxy group, an aryloxy group, an arylamino group, an alkylamino group or a halogen atom; d and e are independently 1 to 5; h is 1 to 9; Ris a secondary or tertiary alkyl or cycloalkyl group; f is 1 to 9; g is 0 to 8 and f+g+h is 2 to 10.

White organic electroluminescent device

An organic EL element comprising; an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, [In3d]/[In3d], is from 0.9 to 1.2 wherein [In3d]is the half band width of a spectral peak derived from a 3dorbit of an In atom in the surface of the anode, and [In3d]is the half band width of a spectral peak derived from a 3dorbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.

Organic electroluminescence element and production method thereof

Provided are a producing apparatus and a producing process which make it possible to obtain effectively an organic EL display device capable of suppressing the generation of dark spots for a long time even in a high temperature environment. Therefore, an apparatus for producing an organic EL display device comprises a first unit for carrying a supporting substrate in, a second unit for heating at least the supporting substrate before forming an organic luminescence medium, thereby performing a dehydration treatment, a third unit for forming the organic luminescence medium and an upper element, and a fourth unit for sealing the periphery of the apparatus with a sealing member, wherein the first unit is arranged between the second unit and the third unit, a first carrying device is set up in the first unit, and a second carrying device is arranged between the third unit and the fourth unit.

Apparatus and method for manufacturing organic EL display device

The present invention concerns a method of forming one or more thin films on a substrate by depositing two or more materials by vacuum evaporation, comprising, depositing each material under such control that ni value of the each material is k&#xb1;0.5 wherein k is a constant from 2 to 5, when relationship between a deposition position and a film thickness of a material i on the substrate is approximated by the following equation (1):D/D(L/L)cos&#x3b8;&#x2003;&#x2003;(1)wherein Lis a distance from an evaporation source to a plane of the substrate in a perpendicular direction, Dis a film thickness of the material i at an intersection point of a perpendicular line from the evaporation source to the plane of the substrate, and Dis a film thickness of the material i at a position on the substrate which is apart from the evaporation source by a distance Lin a direction of an angle &#x3b8;against the perpendicular line. By the method, a homogenous thin film layer for an element can be formed even on a substrate having large screen.

Method for depositing thin film for element, and organic electroluminescence element

An electrode substrate comprising; an electrode comprising a compound containing an In atom and a substrate body, wherein a half band width ratio [In3d]/[In3d]is from 0.9 to 1.2 wherein [In3d]is a half band width of a 3dorbit spectral peak of an In atom in the surface of the electrode, and [In3d]is a half band width of a 3dorbit spectral peak of an In atom in the interior of the electrode, the spectral peaks being measured by X-ray photoelectron spectroscopy: and the method for the production thereof.

Electrode substrate and production method thereof

An organic EL element comprising: an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, &lsqb;In3d &rsqb; /&lsqb;In3d &rsqb; , is from 0.9 to 1.2 wherein &lsqb;In3d &rsqb; is the half band width of a spectral peak derived from a 3d orbit of an In atom in the surface of the anode, and &lsqb;In3d &rsqb; is the half band width of a spectral peak derived from a 3d orbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.

Method for forming thin-film layer for device and organic electroluminescence device

An organic electroluminescent device including a lower electrode, an organic light-emission medium, and an upper electrode on a support substrate, wherein the water content of the organic light-emission medium does not exceed 0.05 wt. %. By so controlling the water content of the organic light-emission medium, it is possible to prevent shrinkage of a light-emission area based on production of non-emission parts or non-emission spots for a long time at both high temperature and room temperature conditions. A method of making the organic electroluminescent device is disclosed also.

Organic electroluminescence display device and method of manufacturing same

An organic EL device is improved to produce an increased luminance and have a prolonged lifetime. In an organic EL device comprising a cathode layer an electron injection region a light emission region and an anode layer as laminated in that order, the electron injection region contains an aromatic compound composed of carbon and hydrogen or an aromatic compound composed of carbon, hydrogen and oxygen, along with a reducing dopant, and the electron affinity of the electron injection region is controlled to fall between 1.8 and 3.6 eV; or the electron injection region contains an electron-transporting compound and a reducing dopant having a work function of at most 2.9 eV, and the electron affinity of the electron injection region is controlled to fall between 1.8 and 3.6 eV.

Organic electroluminescent device

Transparent, organic EL devices comprising an positive electrode, a negative electrode and an organic layer including an organic light-emitting layer as sandwiched between the two electrodes, in which the negative electrode is comprised of an electron injection electrode layer and an amorphous transparent conductive film, and the electron injection electrode layer is adjacent to the organic layer, or in which the negative electrode is comprised of an electron injection electrode layer, a transparent conductive film and a thin metal film having a specific resistance of not larger than 1&times;10,&OHgr;&middot;cm, as laminated in that order with the electron injection electrode layer being adjacent to the organic layer, and a thin transparent film is formed outside the negative electrode. Preferably, the transparent conductive film is an amorphous one. The devices have a negative electrode with low resistance and high transparency, and have high luminous efficiency and good durability (wet heat resistance). The light emission can be taken out through the side of the negative electrode of the devices. The devices are usable for high-resolution display.

An amorphous electrically conductive oxide such as In&mdash;Zn&mdash;O-containing amorphous oxide or amorphous ITO is used alone, or a laminate having a two- or three-layer structure constituted of the amorphous electrically conductive oxide and at least a thin metal layer is used, to form a transparent electrode whose side surface has a tapered form and whose top layer is formed of a layer of the above amorphous electrically conductive oxide, an organic single-layer portion or an organic multi-layer portion containing at least an organic light-emitting material is formed on the above transparent electrode, and further, an opposing electrode is formed on the above organic single-layer portion or the above organic multi-layer portion, whereby an organic EL device is obtained. A flattening layer is optionally provided so as to abut on the side surface of the transparent electrode for moderating a height-level difference between the above transparent electrode and the surface of the above substrate. Further, the above organic EL device is used to form an organic EL display panel.

Organic EL device

An aromatic dimethylidyne compound of the formula: ##STR1## wherein X and Y are the same or different and are each an alkyl having 1 to 4 carbons, a phenyl, a cyclohexyl, a naphthyl, or a pyridyl and Ar' is ##STR2## A process for preparing an aromatic dimethylidyne compound which comprises condensing a phosphorus compound and a ketone compound.

Aromatic dimethylidyne compounds

Disclosed is a method for producing organic EL devices stably having intended capabilities. The method comprises cleaning an electrode-mounted substrate 17 followed by forming a plurality of film layers including organic layers and a counter electrode layer, on the electrode mounted on the substrate, successively one after another in vacuum, wherein the time just after the finish of cleaning the electrode-mounted substrate 17 and before the start of forming the first film layer on the electrode 12 is shorter than the time within which the value of the contact angle with water of the surface of the electrode 12 just after the finish of cleaning it increases by 30.degree. in vacuum. In producing organic EL devices having a plurality, n=1, 2, 3, . . . , of film layers on an electrode-mounted substrate, the time just after the finish of forming the n'th film layer and before the start of forming the next (n+1)'th film layer is shorter than the time within which the value of the contact angle with water of the surface of the n'th film layer just after having been formed increases by 30.degree. in vacuum. In the organic EL devices produced, the interfaces between the adjacent layers are protected from being contaminated with impurities.

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Sodegaura, Japan

Hiroshi Tokailin