42results about How to "Excellent luminance" patented technology

A light emitting apparatus and a production method of the apparatus are provided that can emit light with less color unevenness at high luminance. The apparatus includes a light emitting device, a transparent member receiving incident light emitted from the device, and a covering member. The transparent member is formed of an inorganic material light conversion member including an externally exposed emission surface, and a side surface contiguous to the emission surface. The covering member contains a reflective material, and covers at least the side surfaces of the transparent member. Substantially only the emission surface serves as the emission area of the apparatus. It is possible to provide emitted light having excellent directivity and luminance. Emitted light can be easily optically controlled. In the case where each light emitting apparatus is used as a unit light source, the apparatus has high secondary usability.

To provide a phosphor having a broad emission spectrum in a range of blue color (peak wavelength from 400 nm to 500 nm), having a broad and flat excitation band in the range of near ultraviolet / ultraviolet, and having excellent emission efficiency and emission intensity / luminance. The phosphor is expressed by a general composition formula MmAaBbOoNn:Z (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, element B is more than one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator.), satisfying 5.0<(a+b) / m<9.0, 0≦a / m≦2.0, 0≦o<n, n=2 / 3m+a+4 / 3b−2 / 3o, and having an emission spectrum with a maximum peak wavelength from 400 nm to 500 nm under an excitation of the light in a wavelength range from 350 nm to 430 nm.

To provide a phosphor having a broad emission spectrum with a peak in the range from yellow color to red color (wavelength from 570 nm to 620 nm), having a flat excitation band with large area on the long wavelength side from near ultraviolet / ultraviolet to green color (wavelength from 250 nm to 550 nm), and excellent in emission intensity and luminance, and a method of manufacturing the same, and also a light source such as white LED using the phosphor. As raw materials, Ca3N2(2N), AlN(3N), Si3N4(3N), and Eu2O3(3N) are prepared, and out of each raw material, 0.950 / 3 mol of Ca3N2. 2 mol of AlN, 4 / 3 mol of Si3N4, and 0.050 / 2 mol of Eu2O3 are weighed, and the raw materials thus weighed are mixed by using a mortar. The raw materials thus mixed are put in a BN crucible, and retained / fired for 3 hours at 1700° C. in a nitrogen atmosphere, and thereafter cooled from 1700° C. to 200° C., to thereby obtain the phosphor expressed by a composition formula Ca0.950Al2Si4O0.075N7.917:Eu0.050.

To provide a phosphor having an emission spectrum with a broad peak in a range of blue color (peak wavelength range from 400 nm to 500 nm) and a broad and flat excitation band in a range of near ultraviolet / ultraviolet, and having an excellent emission efficiency and emission intensity / luminance, a manufacturing method of the same, and a light emitting device using the phosphor. The phosphor is provided, which is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator.), satisfying 5.0<(a+b) / m<9.0, 0≦a / m≦2.0, 0≦o<n, and n=2 / 3m+a+4 / 3b−2 / 3o, and having an emission spectrum with a maximum peak wavelength from 400 nm to 500 nm under an excitation of the light in a wavelength range from 350 nm to 430 nm.

To provide a phosphor having a broad emission spectrum in a range of blue color (in a peak wavelength range from 400 nm to 500 nm), having a broad flat excitation band in a near ultraviolet / ultraviolet range, and having excellent emission efficiency and emission intensity / luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator), satisfying 5.0<(a+b) / m<9.0, 0≦a / m≦2.0, 0≦o≦n, n=2 / 3m+a+4 / 3b−2 / 3o, and has an emission spectrum with a maximum peak in the wavelength range from 400 nm to 500 nm under an excitation of the light in a wavelength range from 250 nm to 430 nm.

The present invention relates to a heterocyclic compound containing an aromatic amine group and an organic light-emitting device comprising the same and, more specifically, to a heterocyclic compound and an organic light-emitting device comprising the same, the heterocyclic compound being excellent in brightness and excellent light emission efficiency and being able to exhibit long life and excellent device characteristics when being used as an organic light-emitting material.

Disclosed is an optical device for a display having a tapered waveguide and a method of fabricating such devices. In order to reduce light absorption inside the waveguide, a light-absorbing material is coated on the front surface only of the optical device Alternatively, a space adjacent to the waveguide is coated with a material having a refraction index different from the waveguide, preferably, lower than that of the waveguide and then filled with a light-absorbing material. In addition, a large- and uniform-sized light-absorbing material may be filled in the space. The optical device has an improved light efficiency, and thus exhibits an excellent luminance, as compared with the conventional ones, when using an identical light source. Furthermore, the fabrication method can produce such optical devices in a simplified manner, thus improving production efficiency.

To provide a phosphor having a broad emission spectrum in a range of blue color (peak wavelength from 400 nm to 500 nm), having a broad and flat excitation band in the range of near ultraviolet / ultraviolet, and having excellent emission efficiency and emission intensity / luminance. The phosphor is expressed by a general composition formula MmAaBbOoNn:Z (where element M is at least one or more kind of element having bivalent valency, element A is at least one or more kind of element having tervalent valency, element B is at least one or more kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one or more kind of element acting as an activator.), satisfying 5.0<(a+b) / m<9.0, 0≦a / m≦2.0, 0≦o<n, n=2 / 3m+a+4 / 3b−2 / 3o, and having an emission spectrum with a maximum peak wavelength from 400 nm to 500 nm under an excitation of the light in a wavelength range from 350 nm to 430 nm.

Disclosed herein are a touch panel and a touch-panel-integrated organic light-emitting display device that are capable of solving a retransmission problem while exhibiting excellent luminance and color viewing angle characteristics. The touch panel includes a plurality of first and second electrodes disposed on a substrate so as to intersect each other. Each first electrode includes a first touch electrode, the first touch electrode including a first metal mesh pattern having a lattice structure formed by a plurality of first and second line electrodes intersecting each other and a first floating unit disposed in the central part of the first metal mesh pattern, the first floating unit being electrically isolated from the first metal mesh pattern, the first floating unit being made of a transparent conductive material. Each second electrode includes a second touch electrode, the second touch electrode including a second metal mesh pattern formed by a plurality of third and fourth line electrodes intersecting each other in a lattice structure and a second floating unit disposed in the central part of the second metal mesh pattern, the second floating unit being electrically isolated from the second metal mesh pattern, the second floating unit being made of a transparent conductive material.

A light-emitting device which can effectively be utilized as a surface light source for a full-color display, a back light or an illumination light source, or as a light source array in a printer, which shows an excellent light-emitting efficiency and light-emitting luminance, and which is particularly excellent as a white light source showing an excellent light-emitting efficiency and light-emitting luminance. The light-emitting device comprises a substrate having provided thereon at least an anode, an organic compound layer including a light-emitting layer, and a cathode, in which the light-emitting layer contains two or more different kinds of light-emitting materials, with at least one of the light-emitting materials being an orthometallated complex.

A scintillator panel includes a support and a scintillator layer, wherein the scintillator layer includes scintillator particles, a binder resin, and a void, and the porosity of the scintillator layer is from 14 to 35% by volume.

elementAn organic electroluminescent element of the present invention contains a positive electrode, a negative electrode, and a thin organic layer arranged between the positive electrode and the negative electrode, wherein the thin organic layer comprises, as a luminescent material, a peropyrene compound represented by following Structural wherein R1, R6, R8 and R13 may be the same as or different from one another and each represent a group represented by following Structural Formula (2); and R2, R3, R4, R5, R7, R9, R10, R11, R12 and R14 each represent hydrogen atom or a substituent: wherein R15 and R16 may be the same as or different from each other and each represent one of hydrogen atom, an alkyl group and an aryl group, where R15 and R16 may be bound to each other directly or indirectly.

To provide a phosphor having a broad emission spectrum in a range of blue color (in a peak wavelength range from 400 nm to 500 nm), having a broad flat excitation band in a near ultraviolet / ultraviolet range, and having excellent emission efficiency and emission intensity / luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator), satisfying 5.0<(a+b) / m<9.0, 0≦a / m≦2.0, 0≦o≦n, n=2 / 3m+a+4 / 3b−2 / 3o, and has an emission spectrum with a maximum peak in the wavelength range from 400 nm to 500 nm under an excitation of the light in a wavelength range from 250 nm to 430 nm.

A light-emitting device including an anode, one or more organic compound layers containing at least a light-emitting layer, and a transparent cathode on a flexible support substrate having a linear thermal expansion coefficient of 20 ppm / ° C. or less, water permeability of 0.01 g / m2·day or less, and oxygen permeability of 0.01 cc / m2·day·atm or less. The flexible support substrate is constituted by a metal foil provided with an insulating layer on one or both surfaces thereof.

A compound represented by Chemical Formula 1 wherein each substituent is the same as defined in the specification, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition are provided.

Disclosed herein are a touch panel and a touch-panel-integrated organic light-emitting display device that are capable of solving a retransmission problem while exhibiting excellent luminance and color viewing angle characteristics. The touch panel includes a plurality of first and second electrodes disposed on a substrate so as to intersect each other. Each first electrode includes a first touch electrode, the first touch electrode including a first metal mesh pattern having a lattice structure formed by a plurality of first and second line electrodes intersecting each other and a first floating unit disposed in the central part of the first metal mesh pattern, the first floating unit being electrically isolated from the first metal mesh pattern, the first floating unit being made of a transparent conductive material. Each second electrode includes a second touch electrode, the second touch electrode including a second metal mesh pattern formed by a plurality of third and fourth line electrodes intersecting each other in a lattice structure and a second floating unit disposed in the central part of the second metal mesh pattern, the second floating unit being electrically isolated from the second metal mesh pattern, the second floating unit being made of a transparent conductive material.

Disclosed is an organic light emitting device and a method for manufacturing the same. The organic light emitting device includes a first electrode, one or more organic compound layers, and a second electrode. The first electrode includes a conductive layer and an n-type organic compound layer disposed on the conductive layer. A difference in energy between an LUMO energy level of the n-type organic compound layer of the first electrode and a Fermi energy level of the conductive layer of the first electrode is 4 eV or less. One of the organic compound layers interposed between the n-type organic compound layer of the first electrode and the second electrode is a p-type organic compound layer forming an NP junction along with the n-type organic compound layer of the first electrode. A difference in energy between the LUMO energy level of the n-type organic compound layer of the first electrode and an HOMO energy level of the p-type organic compound layer is 1 eV or less. One or more layers interposed between the conductive layer of the first electrode and the second electrode is n-doped or p-doped with an organic material or an inorganic material.

An LED drive circuit that sufficiently exhibits the performance of an LED element to obtain a favorable luminance at room temperature, includes a constant-current circuit including an LED element, a constant-current output unit, and a temperature sensing element having a negative resistance-temperature coefficient. The LED element is connected to the constant-current output unit in series. The constant-current output unit is connected to the LED element in parallel. Due to changes in the resistance value of the constant-current output unit caused by changes in temperature, the value of a current passing through the LED element is increased at room temperature and the value of a current passing through the temperature sensing element is reduced at high temperature.

To provide a phosphor having an emission spectrum with a broad peak in range from green color to red color, and having excellent emission efficiency and luminance. A phosphor is provided, which is given by a general composition formula expressed by MmAaBbOoNn:Z, (where element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency, element B is more than one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator.), satisfying 2.5<(a+b) / m<4.5, 0<a / m<2.0, 2.0<b / m<4.0, 0<o / m<1.0, o<n, n=2 / 3m+a+4 / 3b−2 / 3o.

A compound represented by Chemical Formula 1 wherein each substituent is the same as defined in the specification, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition are provided.

To provide a phosphor having a broad emission spectrum with a peak in the range from yellow color to red color (wavelength from 570 nm to 620 nm), having a flat excitation band with large area on the long wavelength side from near ultraviolet / ultraviolet to green color (wavelength from 250 nm to 550 nm), and excellent in emission intensity and luminance, and a method of manufacturing the same, and also a light source such as white LED using the phosphor. As raw materials, Ca3N2(2N), AlN(3N), Si3N4(3N), and Eu2O3(3N) are prepared, and out of each raw material, 0.950 / 3 mol of Ca3N2, 2 mol of AlN, 4 / 3 mol of Si3N4, and 0.050 / 2 mol of Eu2O3 are weighed, and the raw materials thus weighed are mixed by using a mortar. The raw materials thus mixed are put in a BN crucible, and retained / fired for 3 hours at 1700° C. in a nitrogen atmosphere, and thereafter cooled from 1700° C. to 200° C., to thereby obtain the phosphor expressed by a composition formulaCa0.950Al2Si4O0.075N7.917:Eu0.050.

An organic light emitting diode display includes: a substrate, an insulating layer on the substrate; a plurality of pixel electrodes on the insulating layer; a pixel defining layer on the insulating layer overlapping with an end of at least one of the pixel electrodes and defining an emission region and a non-emission region; an organic emission layer on the pixel electrodes; and a common electrode on the organic emission layer, wherein the insulating layer has a plurality of concave portions in the non-emission region adjacent corresponding ones of the pixel electrodes, wherein each of the concave portions has a bottom portion and an inclined portion, and wherein a reflective surface is on at least one of the inclined portions.

The present invention provides an organic electroluminescence device having excellent luminous efficiency and excellent luminance. The present invention relates to an organic electroluminescence device including a structure in which a plurality of layers is laminated between an anode and a cathode formed on a substrate; wherein the organic electroluminescence device includes a metal oxide layer between the anode and the cathode; and a nitrogen-containing film layer having an average thickness of not less than 0.1 nm but less than 3 nm adjacent to the metal oxide layer and disposed on an anode side.

The present invention relates to a substrate for an organic electrode device, a manufacturing method thereof, and an organic electronic device. An exemplary substrate of the invention, if an organic light emitting element is formed on an upper part of the substrate, can obtain luminance with high emission and uniformity by efficiently controlling the surface resistance of an electrode even when the device is configured into larger sizes.

Disclosed is an organic light emitting device comprising a first electrode, two or more organic compound layers, and a second electrode, wherein the first electrode comprises a conductive layer and an n-type organic compound layer which is in contact with the conductive layer, one of the organic compound layers interposed between the n-type organic compound layer of the first electrode and the second electrode is a p-type organic compound layer forming an NP junction together with the n-type organic compound layer of the first electrode, energy levels of the layers satisfy the following Expressions (1) and (2), and one or more layers interposed between the p-type organic compound layer and the second electrode are n-doped with alkali earth metal:0 eV<EnL−EF1≦4 eV  (1)EpH−EnL≦1 eV  (2)where EF1 is a Fermi energy level of the conductive layer of the first electrode, EnL is an LUMO (lowest unoccupied molecular orbital) energy level of the n-type organic compound layer of the first electrode, and EpH is an HOMO (highest occupied molecular orbital) energy level of the p-type organic compound layer forming the NP junction together with the n-type organic compound layer of the first electrode.