4277results about "Electroluminescent light sources" patented technology

A display device capable of performing display at high luminance is provided. A first layer containing a first light-emitting material emitting blue light is formed into an island shape over a first pixel electrode, and then a second layer containing a second light-emitting material emitting light having a longer wavelength than blue light is formed into an island shape over a second pixel electrode. After that, an insulating layer overlapping with a region interposed between the first pixel electrode and the second pixel electrode is formed, and a common electrode is formed to cover the first layer, the second layer, and the insulating layer.

A semiconductor nanoparticle, a production method, and an electroluminescent device including the same. The semiconductor nanoparticle includes zinc, sulfur, and selenium, and the semiconductor nanoparticle comprises a first semiconductor nanocrystal; and a semiconductor nanocrystal shell including zinc and sulfur disposed on the first semiconductor nanocrystal, and the semiconductor nanoparticle does not include cadmium; the semiconductor nanoparticle further includes a plurality of organic ligands (or a ligand system), that include a first organic ligand having a carboxylate moiety and a second organic ligand having a carboxylate moiety different from the first organic ligand. In a gas chromatography analysis, the semiconductor nanoparticle exhibits a first peak assigned to the first organic ligand and a second peak assigned to the second organic ligand, wherein an area percentage of the first peak relative to the second peak is greater than or equal to about 1% and less than or equal to about 300%.

A light-emitting device includes a light-emitting part. The light-emitting part contains a quantum dot. The quantum dot has a core and a shell. The shell is located outside the core. Each of the core and the shell has a hexagonal structure. The lattice constant of the core is larger than the lattice constant of the shell.

A semiconductor device including a miniaturized transistor is provided. The semiconductor device includes a semiconductor layer, a first conductive layer, a second conductive layer, a third conductive layer, a first insulating layer, and a second insulating layer. The first insulating layer is provided over the first conductive layer. The first insulating layer has a first opening reaching the first conductive layer. The semiconductor layer is in contact with a top surface and a side surface of the first insulating layer and a top surface of the first conductive layer. The second conductive layer is provided over the semiconductor layer. The second conductive layer includes a second opening in a region overlapping with the first opening. The second insulating layer is provided over the semiconductor layer and the second conductive layer. The third conductive layer is provided over the second insulating layer. The first insulating layer has a stacked-layer structure of a third insulating layer and a fourth insulating layer over the third insulating layer. The fourth insulating layer includes a region having a film density higher than that of the third insulating layer.

To provide a display device, etc. with a novel structure in which gate capacitance of a transistor connected to a scan line is reduced, a display device, etc. with a novel structure in which the resistance of a scan line is reduced, a display device, etc. with a novel structure in which pixels can be arranged with high definition, or a display device, etc. with a novel structure in which the increase in manufacturing cost is suppressed.SOLUTION: In a transistor including a first gate electrode and a second gate electrode connected to a scan line, the first gate electrode is formed of a metal material with low resistance and the second gate electrode is formed of a metal oxide material that can reduce oxygen deficiency of an oxide semiconductor layer. The first gate electrode is connected to the scan line and the second gate electrode is connected to a wire to which a constant potential is applied.SELECTED DRAWING: Figure 1

The invention provides a method for providing composite luminescent particles, comprising: (a) providing (i) a luminescent material, comprising (A1-xBx)3(C1-yDy)5O12 nanoparticles or a precursor therefor, wherein A comprises one or more of yttrium, lutetium, gadolinium, lanthanum; B comprises one or more rare earth elements; C comprises one or more of aluminum, gallium, and scandium; D comprises one or more transition metal ions; and wherein 0≤x≤1, 0≤y≤1, and x+y>0; and (ii) further providing a precursor of an oxide material, wherein said oxide material has a melting point of at least 850°C; (b) mixing said (i) luminescent material comprising (A1-xBx)3(C1-yDy)5O12 nanoparticles or a precursor therefor and (ii) said precursor of an oxide material; (c) curing said precursor of said oxide material to obtain a cured particle, said cured particle comprising said luminescent material, and a coating of said oxide material; (d) heating said cured particle at a first temperature for a first duration, wherein said first temperature is 600 °C or higher, wherein said first duration is 10 minutes or more; and (e) heating said cured particle under a reducing atmosphere comprising carbon monoxide at a second temperature for a second duration, wherein said second temperature is 700 °C or higher, and wherein said second duration is 1 hour or more.

Provided are an information processing method and the like in which it is possible to efficiently obtain a compound capable of having a good property. In the information processing method, includes acquiring a spectral indicator obtained by quantum chemical calculation in a plurality of compounds to be candidates, classifying, on the basis of the acquired spectral indicator, each of the compounds into a group in which the spectral indicator satisfies a predetermined condition and extracting a group in which the spectral indicator does not satisfy the predetermined condition, and a light emitting compound classified into the group in which the spectral indicator satisfies the predetermined condition.

Provided are a foldable optical film with excellent impact resistance and with capability to improve design quality, and an image display device including the same. An aspect of the present invention provides a foldable optical film 10 with a front surface 10A and a back surface 10B opposite to the front surface 10A, wherein optical film 10 includes a hard coat layer 12, a resin layer 13, and a decorative layer 14; the hard coat layer 12 is located closer to the front surface 10A than the resin layer 13 and the decorative layer 14 in the optical film 10; and the resin layer 13 has a film thickness of 10 μm or more, and the resin layer 13 has a Martens hardness of 1 MPa or more and 100 MPa or less.

A display apparatus with a high aperture ratio is provided. The display apparatus includes a first pixel, a second pixel, a first coloring layer, a second coloring layer, a first conductive layer, a second conductive layer, and a first insulating layer. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a common electrode over the first EL layer. The second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the common electrode over the second EL layer. The second pixel is placed to be adjacent to the first pixel. The first coloring layer is placed to overlap with the first pixel. The second coloring layer is placed to overlap with the second pixel. The wavelength range of light that the second coloring layer transmits is different from a wavelength range of light that the first coloring layer transmits. The first conductive layer is placed over the common electrode. The first insulating layer is placed over the first conductive layer. The second conductive layer is placed over the first insulating layer. One or both of the first conductive layer and the second conductive layer overlap with a region interposed between the first EL layer and the second EL layer. A side surface of the first EL layer and a side surface of the second EL layer are placed to face each other.

A highly reliable display device is provided. The display device includes a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer, an insulating layer, a functional layer, and a light-emitting layer. The second conductive layer is provided over the first conductive layer and the third conductive layer is provided over the second conductive layer. A side surface of the second conductive layer is positioned on the inner side of side surfaces of the first and third conductive layers in a cross-sectional view. The insulating layer is provided to cover at least part of the side surface of the second conductive layer. The fourth conductive layer is provided to cover the first to third conductive layers and the insulating layer and to be electrically connected to the first to third conductive layers. The functional layer is provided to include a region in contact with the fourth conductive layer and the light-emitting layer is provided over the functional layer. The visible light reflectance of at least one of the first to third conductive layers is higher than the visible light reflectance of the fourth conductive layer.

A light-emitting element includes the following: a cathode; an anode; a light-emitting layer provided between the cathode and the anode; an electron transport layer provided between the cathode and the light-emitting layer; and a potential well provided between the cathode and the light-emitting layer, and being a region having a larger electron affinity than a surrounding region.

A display device includes: a light emitting element layer provided on a base; and a lens layer provided on a side opposite to the base across the light emitting element layer, the lens layer including a plurality of main lenses arranged in an array in a plane direction of the lens layer and an auxiliary lens provided on a side opposite to the light emitting element layer across the array of the plurality of main lenses, the auxiliary lens being located between adjacent main lenses among the plurality of main lenses in a plan view of the lens layer.

The invention discloses a method for improving the electrode resistance uniformity of an AC electroluminescent device, and the preparation method of a complete ACEL device comprises the following steps: uniformly spraying a metal nanowire electrode material on the surface of a substrate to form a bottom electrode with uniform resistance and excellent conductivity; a bottom electrode is sequentially covered with a dielectric layer material and a light-emitting layer material through the screen printing technology, the surface of the light-emitting layer is further sprayed with a layer of metal nanowire electrode material to construct an upper electrode, finally, the upper electrode is covered with a packaging material through screen printing to protect a device, the whole process is simple in technology, high in repeatability and reliability, and the manufacturing cost is low. Wherein the surface roughness of the light-emitting layer affects the electrical performance of a metal nanowire electrode, the long-term stability of the electrode is reduced due to high roughness, and the service life of the electrode is further shortened, so that the surface roughness of the light-emitting layer is controlled by adjusting the solid content of the fluorescent powder in the light-emitting layer, which is very important for improving the performance and the stability of a device.

The invention relates to a high-efficiency near-ultraviolet heat exciton compound with circular polarization property and application of the high-efficiency near-ultraviolet heat exciton compound in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The organic electroluminescent material is a high-efficiency near-ultraviolet heat exciton compound with circular polarization property, nine pairs of near-ultraviolet enantiomers are successfully designed and synthesized by combining chiral group binaphthol with fluorene with high luminous efficiency, and the nine pairs of near-ultraviolet enantiomers all show obvious circular polarization luminous property and high fluorescence quantum yield. The electroluminescent devices prepared based on the nine pairs of near ultraviolet enantiomers all show near ultraviolet emission, and the external quantum efficiency is 3.9%, 3.1%, 4.5%, 7.5%, 6.3%, 5.0%, 10.3%, 9.2% and 11.6% respectively. A new visual angle is provided for developing a near ultraviolet heat exciton material with circular polarization luminescence and high efficiency at the same time, and 3D and wide color gamut display can be directly achieved in the future.

A light absorption filter that contains a resin; a dye having a main absorption wavelength band in a wavelength range of 400 to 700 nm, including at least one of a specific azo-based coloring agent represented by any of General Formulae (i) to (iv) or a specific indoaniline-based coloring agent represented by General Formula (v); and a compound that generates a radical upon ultraviolet irradiation. There is also an optical filter that uses the light absorption filter and a manufacturing method for the optical filter, as well as an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, which includes the optical filter.

An organic EL device includes a first hole transporting zone including a first anode-side organic layer and a second anode-side organic layer, in which at least one of the first anode-side organic layer or the second anode-side organic layer contains an additive material, and when the first anode-side organic layer contains a fourth material as the additive material, Numerical Formula N1 and N2 are satisfied:NM1>NM2(Numerical⁢ Formula⁢ N1)NM1⁢4>N⁢M10(Numerical⁢ Formula⁢ N2)where NM1 represents a refractive index of a constituent material in the first anode-side organic layer; NM2 represents a refractive index of a constituent material in the second anode-side organic layer; NM10 represents a refractive index of the constituent material in the first anode-side organic layer not containing the fourth material; and NM14 represents a refractive index of the constituent material in the first anode-side organic layer containing the fourth material.

A display device excellent in downsizing, reduction in power consumption, or layout flexibility of an arithmetic device is provided. The display device includes a pixel circuit, a driver circuit, and a functional circuit. The driver circuit has a function of outputting an image signal for performing display in the pixel circuit. The functional circuit includes a CPU including a CPU core including a flip-flop electrically connected to a backup circuit. The display device includes a first layer and a second layer. The first layer includes the driver circuit and the CPU. The second layer includes the pixel circuit and the backup circuit. The first layer includes a semiconductor layer including silicon in a channel formation region. The second layer includes a semiconductor layer including a metal oxide in a channel formation region. The CPU has a function of correcting the image signal in accordance with the amount of current flowing through the pixel circuit.

A uranium-based phosphor selected from (i) phosphors having formula I or II:where the phosphor having formula I or II is doped with an activator ion including Pr3+, Sm3+, or mixtures thereof, where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25, 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5; (ii) a phosphor having formula I or II, where the phosphor having formula I or II is doped with an activator ion selected from Eu3+, Pr3+, Sm3+, and mixtures thereof; and a counter ion comprising one or more alkali metal ions; and (iii) phosphors having formula IIIwhere the phosphors having formula III are doped with an activator ion selected from: Eu3+, Pr3+, Sm3+, and mixtures thereof, where A is Li, Na, K, Rb, Cs, or a combination thereof.

A high-resolution display device is provided. The display device includes a plurality of light-emitting units emitting light of different colors. The light-emitting unit has a microcavity structure and intensifies light with a specific wavelength. In the light-emitting units emitting light of different colors, reflective layers with different thicknesses are formed, an insulating layer is formed to cover the reflective layers, and then a top surface of the insulating layer is subjected to planarization treatment, whereby an insulating layer with different thicknesses is formed. After that, light-emitting elements emitting white light are formed over the planarized top surface of the insulating layer to overlap with the respective reflective layers, whereby the light-emitting units that intensify different colors due to different optical path lengths are separately formed.

According to the present invention, provided are an optical laminate which has excellent adhesiveness between two optically anisotropic layers, and in which an A plate or a layer obtained by fixing a twist-aligned liquid crystal phase, which is as an optically anisotropic layer, has excellent liquid crystal alignment properties, a polarizing plate, and an image display device. An optical laminate of the present invention has: a first optically anisotropic layer formed of a first liquid crystal compound; a second optically anisotropic layer formed of a second liquid crystal compound; and a mixed layer which is disposed between the first optically anisotropic layer and the second optically anisotropic layer and contains a component derived from the first liquid crystal compound and a component derived from the second liquid crystal compound, the first optically anisotropic layer is a C plate, the second optically anisotropic layer is an A plate or a layer obtained by fixing a twist-aligned liquid crystal phase, the mixed layer further contains a photo-alignment compound, and in an analysis of components of the optical laminate in a depth direction by time-of-flight secondary ion mass spectrometry with ion beam irradiation from a surface of the optical laminate on a first optically anisotropic layer side toward a second optically anisotropic layer side, predetermined requirements are satisfied.

According to the present invention, options for materials for organic devices such as materials for organic EL elements are increased by addition of a cycloalkane, by condensation, to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.

A high-resolution display device is provided. The display device includes a first light-emitting device, a second light-emitting device, a first insulating layer, a second insulating layer, a first coloring layer, and a second coloring layer. The first light-emitting device includes a first pixel electrode, a first layer, and a common electrode in this order over the first insulating layer. The second light-emitting device includes a second pixel electrode, a second layer, and the common electrode in this order over the first insulating layer. The first insulating layer includes a groove including a region overlapping with the first pixel electrode and a region overlapping with the second pixel electrode. The second insulating layer overlaps with a side surface of the first layer, a side surface of the second layer, and the groove. The common electrode includes a portion positioned over the second insulating layer. The first coloring layer overlaps with the first light-emitting device. The second coloring layer overlaps with the second light-emitting device. The second coloring layer and the first coloring layer transmit light of different colors. The first layer and the second layer contain the same light-emitting material and are apart from each other.

An organic electroluminescence device includes: an anode; a cathode; a first emitting layer; and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains, as a first host material, a first compound that has at least one group represented by a formula (11A) below and that is represented by a formula (1) below, the second emitting layer contains, as a second host material, a second compound represented by a formula (2) below, and the first emitting layer and the second emitting layer are in direct contact with each other.

A display device has a display panel provided with a plurality of light emitting elements 10 including a light emitting part 30, and a lens member 50 through which light emitted from the light emitting part 30 passes, in which when a distance (an offset amount) between a normal LN passing through a center of the light emitting part 30 and a normal LN′ passing through a center of the lens member 50 is defined as D0, a value of the distance (offset amount) D0 is not 0 in at least some of the light emitting elements 10 provided in the display panel.

The invention discloses a high-color-purity near ultraviolet heat exciton compound with circular polarization property and application thereof in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The electroluminescent material disclosed by the invention is a high-color-purity near ultraviolet heat exciton compound with circular polarization property, and two pairs of near ultraviolet enantiomers are successfully designed and synthesized by combining a chiral group binaphthol, a weak donor dibenzothiophene, dibenzofuran and an acceptor cyanophenyl; the compounds show obvious circular polarization luminescence property and high fluorescence quantum yield. The electroluminescent devices prepared based on the enantiomers all show near ultraviolet emission, CIE coordinates are respectively (0.168, 0.040) and (0.166, 0.040), and the external quantum efficiencies are respectively 4.3% and 3.4%. According to the near ultraviolet heat exciton material, a new visual angle is provided for developing the near ultraviolet heat exciton material with circular polarization luminescence and high color purity at the same time, and 3D and wide color gamut display can be directly achieved in the future.

Provided is a triazine ring-containing polymer characterized by containing a repeating unit structure represented by formula (1) and having at least one triazine ring terminal, and in that at least a portion of the triazine ring terminal is blocked with an amino group having a crosslinking group (excluding a hydroxy-containing group). (In the formula, each of R and R' independently represents a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group; and Q represents an alkylene group having 3-30 carbon atoms and an alicyclic structure. The symbol * represents a bond.)

A modular construction system light matrix comprising a housing having side walls, an end wall and a front edge encircling a front opening of said housing. The light matrix has an array of light emitting elements. The light matrix has a compartment grid, arranged in said housing and having compartment grid walls extending towards said front opening of the housing, one compartment for each light emitting element. The light matrix has a light diffusing element arranged at said opening of the housing having a plurality of diffuser tiles, each diffuser tile covering a compartment of the compartment grid. The diffusing element comprises a diffuser grid providing a barrier between mutually facing sidewalls of the diffuser tiles. The diffuser grid is formed in a different material from the diffuser tiles. A lower side of the diffuser grid adapted to abut an upper side of the compartment grid.

Provided is an optical laminate with excellent durability and an image display device formed of the optical laminate. The optical laminate includes a pressure sensitive adhesive layer 1, a specific laminate including a resin layer and a light absorption anisotropic layer which are adjacent to each other, and a pressure sensitive adhesive layer 2 in order, in which the light absorption anisotropic layer contains a dichroic substance, the pressure sensitive adhesive layer 1 is adjacent to the resin layer of the specific laminate, and a storage elastic modulus Ep of the pressure sensitive adhesive layer 1 and a storage elastic modulus Ea and a moist heat strain δa of the resin layer satisfy Expression (1-1) ¼ (3×Ep / Ea)2 / 3>δa.

The display device includes a substrate, a transistor, a leveling film, a display element, a partition wall, and at least one dam. The substrate has a display region and a peripheral region surrounding the display region. The transistor is located over the display region. The leveling film is located over the display region and covers the transistor. The display element is located over the leveling film and includes a pixel electrode electrically connected to the transistor. The partition wall covers an edge portion of the pixel electrode. The at least one dam is located over the peripheral region, is spaced away from the leveling film, and surrounds the display region. The at least one dam has a base and stopper. The base includes a material included in at least one of the leveling film and the partition wall.

A display device comprises: a display region having a plurality of pixels; and a frame region, the display region including: a thin-film transistor layer; a light-emitting-element layer provided above the thin-film transistor layer; and a sealing layer provided above the light-emitting-element layer, the light-emitting-element layer including: a first electrode; a second electrode; a light-emitting layer provided between the first electrode and the second electrode; and an electron-transport layer provided between the light-emitting layer and the second electrode, and the electron-transport layer containing: nanoparticles of metal oxide; and a binding resin.