41results about How to "Excellent luminance" patented technology

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

Ca_0.950Al₂Si₄O_0.075N_7.917:Eu_0.050.

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.

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.

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 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.

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.

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.

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 specification relates to a compound represented by Chemical Formula 1, and a color conversion film, a backlight unit and a display apparatus including the same.