By doping an organic compound functioning as an electron donor (hereinafter referred to as donor molecules) into an organic compound layer contacting a cathode, donor levels can be formed between respective LUMO (lowest unoccupied molecular orbital) levels between the cathode and the organic compound layer, and therefore electrons can be injected from the cathode, and transmission of the injected electrons can be performed with good efficiency. Further, there are no problems such as excessive energy loss, deterioration of the organic compound layer itself, and the like accompanying electron movement, and therefore an increase in the electron injecting characteristics and a decrease in the driver voltage can both be achieved without depending on the work function of the cathode material.

Light Emitting Device

PROBLEM TO BE SOLVED: To provide a colored photosensitive resin composition having high sensitivity and capable of forming a smooth colored pattern whose section shape is forward tapered or rectangular upon development. SOLUTION: The colored photosensitive resin composition comprises (A) a pigment, (B) a binder polymer, (C) a photopolymerizable compound, (D) a photopolymerization initiator, (E) a pigment dispersant and (F) a solvent. When the surface of a glass substrate is coated with the colored photosensitive resin composition by a spin coating method, the volatile components of the composition are volatilized by drying the composition at 100°C for 3 min to form a film (whose thickness is 1.6 μm), this film is immersed in an alkaline aqueous solution (an aqueous solution containing 0.05 mass% potassium hydroxide and 0.2 mass% sodium butylnaphthalenesulfonate) used in an amount 2,500 times (by mass) the amount of the film, the aqueous solution is stirred with a stirrer at 300 rpm for 80 sec and the particle size distribution of particles contained in the aqueous solution is measured by a light scattering method, the cumulative 90% particle diameter of the particles is ≤0.5 μm and the maximum particle diameter is ≤1.0 μm. COPYRIGHT: (C)2003,JPO

Colored photosensitive resin composition

PROBLEM TO BE SOLVED: To provide a planar lighting system having a low-profile shape and high light utilizing efficiency for emitting light with less brightness irregularity while actualizing middle-high or bell-shaped brightness distribution SOLUTION: The planar lighting system comprises: a light guide plate having two symmetrical inclined faces gradually distant from a light projection plane as tending from two light incident planes to the center of the light projection plane and a curved portion for joining the two inclined faces, and including scattering particles for scattering light conveyed inside, wherein a length between the two light incident planes, the thickness of each of the light incident planes, the center thickness of the curved portion, the curvature radius of the curved portion, and the taper of the inclined face each satisfy a predetermined range, and the particle sizes of the scattering particles, the concentration thereof, the light utilizing efficiency, and the middle-high degree of the brightness distribution of the light projection plane each satisfy a predetermined range; light sources; a casing; a fixing means for fixing the light source with distances between the light sources and the light incident planes of the light guide plate kept to be constant, and a sliding mechanism for sliding the fixing means relative to the casing COPYRIGHT: (C)2009,JPO&INPIT

Planar lighting system

A light emitting device is a light emitting device using light emitting elements and includes: a substrate; a resin frame provided circularly on the substrate; a resin wall provided on the substrate so as to partition an area surrounded by the resin frame into 2 zones; light-emitting sections (a first light-emitting section: blue LEDs+red fluorescent material, a second light-emitting section: blue LEDs+yellow fluorescent material) provided in the respective zones, each of which light-emitting sections includes at least one light emitting element; and first and second anode electrodes and a cathode electrode provided so that each of the light-emitting sections receives current via a corresponding anode electrode and the cathode electrode, the light-emitting sections emitting respective pieces of light each having at least one color, which respective pieces of light have different colors from each other, the first and second anode electrodes being electrically connected to the first and second light-emitting sections, respectively. With the arrangement, which can increase an integration degree, it is possible to achieve a high color rendering property and an excellent color mixing property, to easily adjust a chromaticity, and to easily generate light with a desired chromaticity.

Light emitting device and illumination device

PROBLEM TO BE SOLVED: To provide a heat-resistant light-emitting device capable of achieving high luminance by increasing a light emission area. SOLUTION: The light-emitting device 1 includes: a plate-like heat radiation member 2; a light-emitting body 3 mounted on the heat radiation member 2, having a substrate 31 and a semiconductor laminate 32 formed on the substrate 31 and capable of emitting linear or surface light; a fluorescent lens 4 covering the light-emitting body 3 on the heat radiation member 2; and a light-emitting body side vacuum heat insulating layer 5 formed between the fluorescent lens 4 and the light-emitting body 3: wherein heat radiation performance is secured while increasing the light emission area. COPYRIGHT: (C)2010,JPO&INPIT

Light-emitting device

PROBLEM TO BE SOLVED: To provide a cationic polymerizable composition having high activities (rapid polymerization, rapid curing) by radiation of an active ray and/or heating. SOLUTION: The polymerizable composition that contains an alicyclic alkane (a) having an oxetanyl group and an epoxy group in the same molecule and a compound (b) that initiates a cationic polymerization by irradiating of active energy ray and/or heating shows high activity in light or heat cationic ring- opening polymerization, and the polymer (curing material) found out having good physical properties. COPYRIGHT: (C)2001,JPO

Polymerizable composition, its cured product and production method

PROBLEM TO BE SOLVED: To provide a material for covering or repairing a tubular molded product by a photo-curing composition curable by the light of a long wavelength having permeability even using a heat source. SOLUTION: In this material, a fiber layer-form substance, such as a cylinder body or a sheet, is impregnated-with a resin composition consisting of 100 pts.wt. unsaturated polyester resin and/or vinyl ester resin and 0.01-20 pts.wt. bissacyl phosphin oxide compound represented by a formula, wherein R1 -R3 respectively independently indicate an alkyl group, an aryl group, an aryl group, an aralkyl group, an alkynil group, an alkenyl group, alkynil group, a heterocyclic group, a substitution alkyl group, a substitution aryl group, a substitution allyl group, a substitution aralkyl group, a substitution alkenyl group, a substitution alkinyl group, or a substitution heterocyclic group.

Photo-curing material for covering or repairing inside face of tubular molded product and its covering method

PROBLEM TO BE SOLVED: To obtain an electrically conductive adhesive composition capable of being cured with a small irradiation amount of an active energy beam and excellent in various physical properties SOLUTION: This electrically conductive adhesive composition contains a compound having at least one oxetanyl group in its molecule and electrically conductive particles The composition exhibits such characteristics as being cured with the small irradiation amount of the active energy beam while keeping good adhesion and electrical properties, so that it is useful for an electrically conductive adhesive and an electrically conductive adhesive film

Electrically conductive adhesive composition

PROBLEM TO BE SOLVED: To provide a photocurable prepreg compsn. in which the state of B stage of a thermosetting resin (e.g. an unsatd. polyester resin or a vinyl ester resin) contained can be easily controlled and which has a good storage stabiliy and gives a molded item with a good curability and to provide a process for producing the same. SOLUTION: This compsn. contains an unsatd. polyester resin and/or a vinyl ester resin, at least two photopolymn. initiators different from each other in wavelengths to which they are sensitive, and an inorg. or org. fibrous reinforcement and/or a filler and has been treated with light having such wavelengths that a part of the free-radical polymerizable unsatd. groups of the resin are prepolymerized and that at least one photopolymn. initator and a part of the unsatd. groups remain unchanged.

Photocurable prepreg composition and its production

PROBLEM TO BE SOLVED: To provide a thin plane light source device with reduced brightness irregularity and color irregularity and a display device including the plane light source device SOLUTION: Disclosed is the plane light source device including a substrate on which a solid-state light-emitting element is placed, a light guide member disposed above the substrate in a face-to-face manner and a reflection member disposed on a lower surface of the light guide member, wherein a recessed part is provided on at least one of a top surface and a back surface of the light guide member; and the display device including the plane light source device COPYRIGHT: (C)2007,JPO&INPIT

岳男渡辺

Papers

Polymerizable composition, its cured product and production method

Photo-curing material for covering or repairing inside face of tubular molded product and its covering method

Electrically conductive adhesive composition

Photocurable prepreg composition and its production

Plane light source device and display device

岳男 渡辺

Papers

Polymerizable composition, its cured product and production method

Photo-curing material for covering or repairing inside face of tubular molded product and its covering method

Electrically conductive adhesive composition

Photocurable prepreg composition and its production

Plane light source device and display device

岳男渡辺