Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting element of high electric energy utilization efficiency, high luminance, and high color purity. SOLUTION: This element includes a luminous substance between an anode and a cathode and emits light with electric energy. The element contains a compound described as the following general formula (1). (Herein, A is a spirobifluorene skeleton, B is a fluorescent skeleton, and n is any natural number of 1 to 4).
Abstract:
PROBLEM TO BE SOLVED: To provide a light emission element which has high luminous efficiency, high brightness and excellent color purity. SOLUTION: Concerning the element emitting light by electrical energy in which a luminescence substance exists between a positive electrode and a negative electrode, the element includes an organic phosphor having a 3-substitution benzene skeleton substituted by a hydrocarbon aromatic series condensation ring including three or more ring structures.
Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting element which has high luminous efficiency; high luminance, and which is superior in chromatic purity. SOLUTION: This is an element in which a luminescent substance exists between a positive electrode and a negative electrode, and which emits light by the electric energy, and the element contains a compound expressed in a formula (1). Here, R1 to R10 are selected respectively from hydrogen, alkyl group, cycloalkyl group, aralkyl group, alkenyl group, cycloalkenyl group, alkynyl group, hydroxyl group, mercapto group, alkoxy group, alkylthio group, aryl ether group, arylthio ether group, aryl group, heterocyclic group, halogen, haloalkane, haloalkene, haloalkyne, cyano group, aldehyde group, carbonyl group, carboxyl group, ester group, carbamoyl group, amino group, nitro group, silyl group, and siloxanyl group. Further, at least one of R1 to R10 is a substituted or unsubstituted aryl group, substituted or unsubstituted heterocyclic group, or electrophilc group.
Abstract:
An organic light-emitting element, including a substrate, a first electrode, a light-emitting layer containing one organic or more layer film, and a light-emitting element of a second electrode. The light-emitting element is provided with a covering layer. For the organic material contained in covering layer, at least one point in the wavelength range between 430nm and 460nm the attenuation coefficient is greater than 0.10 while in the wavelength range of 460nm to 500nm its attenuation coefficient is 0.10 or below. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility, and can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identificaion lamp etc.
Abstract:
Provided are an aromatic amine compound as represented by formula (1), used for improving light extraction efficiency and color purity of an organic light-emitting element, an organic light-emitting element material containing said aromatic amine compound, an organic light-emitting element covering layer material containing said aromatic amine compound, and an organic light-emitting element containing said aromatic amine compound. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility. The organic light-emitting element can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identificaion lamp etc. The organic light-emitting element significantly improves light extraction efficiency and has superior color purity.
Abstract:
An object of the present invention is to provide a highly reliable scintillator panel capable of attaining an image having excellent clarity by markedly suppressing scattering of light emitted from a phosphor by a simple method to give emitted light having a necessary and sufficient intensity. Provided is a scintillator panel including a substrate and a phosphor layer containing a phosphor powder, wherein the phosphor layer has a plurality of recesses in a surface thereof, an area A of openings of the recesses is 500 to 70000 µm 2 , and a ratio D/T of a depth D of the recesses to a thickness T of the phosphor layer is 0.1 to 0.9.
Abstract:
PROBLEM TO BE SOLVED: To provide a red-color electroluminescent element which has a high utilization efficiency of electric energy, and which has a high luminance and which is superior in the chromatic purity. SOLUTION: This is the element in which a luminescent substance exists between a positive electrode and a negative electrode, and which emits light by the electric energy, and the element contains a compound expressed in formula (1). Here, R1 to R8 may be either the same or may be different and selected from hydrogen, alkyl group, cycloalkyl group, aralkyl group, alkenyl group, cycloalkenyl group, alkynyl group, hydroxy group, mercapto group, alkoxy group, alkylthio group, aryl ether group, arylthio ether group, aryl group, heterocyclic group, halogen, haloalkane, haloalkene, haloalkyne, cyano group, aldehyde group, carbonyl group, carboxyl group, ester group, carbamoyl group, amino group, nitro group, silyl group, siloxanyl group, a ring structure formed between neighboring substituted groups. Further, at least one of R1 to R8 is aryl group.
Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting element having high luminous efficiency, high brightness, and excellent color purity. SOLUTION: The element emitting light with electrical energy has a luminescent substance between a positive electrode and a negative electrode. The element itself includes at least one sort of organic phosphors among an organic phosphor having a pyrene skeleton introduced with a substitution group having high volume, and an organic phosphor having the pyrene skeleton introduced with a substitution group which has a higher volume by three-dimensional solid rebounding against other substitution groups or the pyrene skeleton.
Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting element in which luminous efficiency is enhanced, and which is superior in a chromatic purity with a high luminance. SOLUTION: This is the organic electric field light emitting element wherein a light emitting substance exists between a positive electrode and a negative electrode, and the element has a fluorescent skeleton coupled by a single bond, and the respectively coupled fluoreseent skeleton includes an organic fluorescent material of a formula 1 having a stereoscopic repulsion. R1 to R18 are respectively selected from hydrogen, alkyl group, cycloalkyl group, aralkyl group, alkenyl group, cycloalkenyl group, alkynyl group, hydroxyl group, mercapto group, alkoxy group, alkylthio group, aryl ether group, arylthio ether group, aryl group, heterocyclic group, halogen, haloalkane, haloalkene, haloalkyne, cyano group, aldehyde group, carbonyl group, carboxyl group, ester group, carbamoyl group, amino group, nitro group, silyl group, siloxanyl group, and a bonding ring of aromatic, alicyclic or heterocyclic ring formed between an adjacent substituted group.