39results about How to "Luminous properties are stable" patented technology

A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.

The purpose of the invention is to provide an organic electroluminescent element having stable luminescent characteristics with a low luminescence starting voltage and without non-luminescing black spots in the luminescing surface. The invention relates to a method of manufacturing an organic electroluminescent element and an organic electroluminescent element produced by said method, said method of manufacturing an organic electroluminescent element comprising a process for forming a positive electrode substrate by dry etching a transparent electrode in a vacuum, a process for dry washing said positive electrode substrate in a continuous vacuum without exposure to air, a process for forming an organic layer incorporating an organic luminescing layer on said positive electrode substrate, and a process for forming a negative electrode on said organic layer.

A thin-profile organic EL device with a high degree of reliability is provided. The anode, the organic layer and the light transmissible-type cathode are laminated on the substrate and the inorganic water-barrier layer are laminated thereon, and then a UV rays-curable type water-capturing agent comprising a UV rays-curing agent and a water-absorbing agent is cured to bond to the sealing substrate instead of an adhesive layer. The UV rays-curing agent comprises an acrylic monomer, initiator and accelerator. The UV rays-curable type sealing agent is placed to the outer peripheral portion of the UV rays-curable type water-capturing agent to be cured. The emission of the organic layer is transmitted upward via the cathode, UV rays-curable type water-capturing agent and the sealing substrate. The UV rays-curable type water-capturing agent can be formed in a desired thickness and pattern by applying it and irradiating with UV-rays, thereby making it possible to produce a low-profile organic EL device in large quantities with a high degree of reliability and without damaging the organic layer which is not resistant to water.

An organic EL element includes a functional layer disposed between an anode and a cathode on a substrate and including laminated different organic thin films including a light-emitting layer, and a partition wall which defines the functional layer. Each of the organic thin films is formed by applying a liquid containing a functional layer-forming material on a film-forming region defined by the partition wall and then drying the liquid. The partition wall has at least one step portion provided in the side wall thereof in the thickness direction, and liquid repellency is imparted to the uppermost surface of the partition wall and the upper surface of the step portion. The surface of the side wall excluding the step portion has lyophilicity in comparison with the upper surface of the step portion.

An organic electroluminescent panel, an organic electroluminescent display, an organic electroluminescent lighting device, each include an organic electroluminescent element that maintains stable light emission characteristics for a long period of time. The organic electroluminescent panel includes an element substrate; a sealing substrate facing the element substrate; and an organic electroluminescent element disposed on a sealing substrate side of the element substrate, wherein the organic electroluminescent panel further includes a first sealing member and a second sealing member, the first sealing member sealing a gap between the element substrate and the sealing substrate, the second sealing member covering the organic electroluminescent element, the first sealing member and the second sealing member being arranged with a space therebetween, the space is in a vacuum or reduced pressure state.

The invention belongs to the technical field of nanomaterial and particularly relates to a covalent light emitting organic semiconductor polymer nanofiber with a triazine-like structure and a preparation method of the covalent light emitting organic semiconductor polymer nanofiber. Different organic construction units are connected by carbon-carbon bonds. The covalent light emitting organic semiconductor polymer nanofiber with the triazine-like structure is prepared by synthesis of simple solvothermal reaction and dehydration-condensation reaction of aldehyde group and methylene catalyzed by acatalyst adopting Lewis base. The photophysical properties of a derivate and application of the covalent light emitting organic semiconductor polymer nanofiber with the triazine-like structure in water decomposition by photocatalysis are researched by utilizing an ultraviolet absorption spectrum and a fluorescence spectrum. The compound prepared with the preparation method disclosed by the invention is a fluorescent organic semiconductor material with excellent overall properties and can efficiently and stably transmit electrons in photocatalysis water decomposition reaction.

The present invention combines 4-(N, N-dimethylamino)-1, 8-naphthalene imide and fluorene in the same compound, and prepares fluorene-containing 4-(N, N-dimethylamino)-1, 8-naphthalene imide derivative through the synthesis path of Ulman ammonation and amidation. The compound has its chemical structure expressed via element analysis, infrared spectrum and nuclear magnetic resonance, electrochemical property expressed in cyclic voltametry and photophysical property researched in ultraviolet absorption spectrum and fluorescent spectrum. Its application in organic electroluminescence is researched, and experiments shows that the compound has excellent comprehensive performance as electronic transmitting material and yellow and green electroluminescent material.

An organic luminescence device is constituted by an organic luminescence lamination structure comprising a pair of an anode and a cathode, and at least one organic compound layer disposed between the anode and the cathode, a hermetic sealing housing enclosing therein the organic luminescence lamination structure and blocking external air, and a drying agent disposed within the hermetic sealing housing. The drying agent comprises a compound represented by the following formula (1):<paragraph lvl="0"><in-line-formula>R-NCO (1),</in-line-formula>wherein R denotes a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted styryl group, a substituted or unsubstituted acyl group, or a substituted or unsubstituted heterocyclic group. The drying agent comprises the compound of the formula (1) in a polymerized form.

Provided are a film for conversion to green and a film for conversion to red, with which the converted light can retain sufficient intensity over a long period. Also provided is an organic EL device for multicolor light emission that shows stable luminescent properties over a long period. Furthermore provided is a pendant type polymer characterized by having one or more kinds of repeating units represented by general formula (1) and one or more kinds of repeating units represented by general formula (2), (6), or (7), wherein when the molar ratio of (1) to (2), (6), or (7) is expressed by m:n,then n/(m+n) is from 1/100 to 100/100.

A long-life hot cathode fluorescent lamp can include a pair of parallel lead wires that can be arranged at each end of a tube. A coiled filament can be connected at its opposite end portions to the lead wires. The coiled filament can have two long pitched regions in which a coil pitch is longer than regions outside of the long pitched regions. Emitter can be located in a region defined between the two long pitched regions. Shape characteristics and intensive current flow obtained by the presence of the long pitched regions can form the origins of discharge near the boundaries between long and short pitched regions. Accordingly, stable discharge can be achieved with the origins of discharge located at ends of the emitter. As a result, the hot cathode fluorescent lamp is allowed to have a long life and stable light emission characteristics.

The invention provides a device and method for measuring a luminescent spectrum change rule with temperature of a quantum dot. The device comprises a blue-ray or ultraviolet LED lighting source, a hollow cylinder arranged on the blue-ray or ultraviolet LED lighting source, a transparent sheet arranged in the middle of the hollow cylinder and plated with a quantum dot film, a resistance wire wound on the hollow cylinder, a universal meter temperature probe internally inserted between the resistance wire and the outer surface of the hollow cylinder, and a photoelectric probe fixed on the top end of the hollow cylinder. After the LED lighting source is lightened, the resistance wire is used for heating the quantum dot film in the hollow cylinder, the photoelectric probe is used for acquiring a signal of the luminescent source formed by irradiating the quantum dot film through the LED lighting source, and the luminescent spectrum change rule with the temperature of the quantum dot can be acquired according to luminescent feature parameters of the acquired luminescent spectrum and the like of the quantum dot under different temperatures.

The invention relates to a photosensitive ferroelectric polymer composite film and a preparation method thereof, and a ferroelectric device or a piezoelectric device using the composite film. The composite film comprises an organic flexible polymer matrix and inorganic-organic hybrid perovskite filler particles, wherein the content of the filler particles relative to the total mass of the composite film is 1%-5% by mass, and the filler particles exist in the matrix in a monodisperse state.

The present disclosure provides a complex having satisfactory dispersibility and stable luminescence characteristics. A complex of the present disclosure includes: a first substance having a property of specifically binding to a target substance; a quantum dot that contains silicon as a main component and that is negatively charged on a surface; and a linker substance that contains a compound represented by general formula (1) below and that covers the surface of the quantum dot, where the first substance has been immobilized on the surface of the quantum dot through the linker substance:

X—L—Si—(R₁)(R₂)(OR₃)  (1)

where X is a basic functional group; R₁, R₂, and R₃ are each independently an alkyl group; and L is an alkylene group.

A metal vapor discharge lamp, comprises: a translucent ceramic envelope, the envelope comprising a center bulb for defining a discharge space and side tubes, the center bulb and the side tubes being integrally molded; a pair of current suppliers extending through hollows of the side tubes respectively, each of the current suppliers comprising an electrode and a lead-in wire, a first end of the electrode being disposed in the discharge space, a second end of the electrode being connected with the lead-in wire; a sealant for hermetically sealing open ends of the side tubes; and a light-emitting metal contained in the discharge space. An inner wall and an external wall of a seamless boundary portion between the center bulb and each of the side tubes have the smallest curvature radius of R_i mm and R_o mm, respectively. The center bulb has an inner diameter of D mm. The lamp has an electric power of P watts. The radius R_i, radius R_o, diameter D and electric power P satisfy,

−0.00076P+0.304≦R_i/D≦−0.00076P+0.490,   Formula (1)

where P≦350 watts; and

1.28R_o≦R_i≦1.39R_o.   Formula (2)