2857results about "Electroluminescent light sources" patented technology

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%.

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.

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 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.

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.

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.)

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.

A novel electronic device is provided. The electronic device includes a display apparatus, an arithmetic portion, and a gaze detection portion, and the display apparatus includes a functional circuit and a display portion divided into a plurality of sub-display portions. The gaze detection portion has a function of detecting a user's gaze. The arithmetic portion has a function of dividing the plurality of sub-display portions between a first section and a second section using a detection result of the gaze detection portion. The first section includes a region overlapping with a user's gaze point. The functional circuit has a function of making a driving frequency of the second section lower than a driving frequency of the first section.

A method for manufacturing a quantum dot layer includes: performing first application of applying, to a position overlapping with a substrate, a first solution including a plurality of particles including a core and a first ligand, a first inorganic precursor, and a first solvent; performing first heating of heating first solution to a first temperature or higher after the performing first application, the first temperature being a higher temperature of a melting point of the first ligand and a boiling point of the first solvent; and performing second heating of heating the first inorganic precursor to a second temperature after the performing first heating, the second temperature being higher than the first temperature and being a temperature, at which the first inorganic precursor epitaxially grows around the core and at which a first shell configured to coat the core is formed to form a plurality of first quantum dots.

An organic light-emitting element including an organic compound layer containing an organometallic complex that includes a ligand in which a naphthoisoquinoline ring and a naphthalene ring are bonded in a cyclic manner and thus has a small full width at half maximum and high light-emission efficiency.

A display device includes a display region in which display pixels that emit visible light are arranged, and an adjacent region in which invisible light emitting pixels that emit at least invisible light in visible light and invisible light are arranged. The adjacent region is adjacent to the display region along an edge of the display region.

Provided are a light-emitting device and a display device with which it is possible to improve an aperture ratio and which excel in the ability of suppressing a current leak between electrodes, and an electronic apparatus using said display device.　The light-emitting device comprises a substrate, a laminate structure, and an electrode relay part. The laminate structure is provided, on the substrate, with a first electrode, a first organic layer, a second electrode, a second organic layer, and a third electrode in the order stated, the second electrode serving as a common electrode corresponding to the first and the third electrodes, a wall surface part being formed that has at least in part a contiguously connected surface connecting a side wall of the first organic layer, a side wall of the second electrode and a side wall of the second organic layer, a side wall insulating layer being provided that covers at least a portion of the wall surface part. The electrode relay part extends from the third electrode to the substrate side and runs through on the outer surface of the wall surface part via the side wall insulating layer.

An organometallic complex is represented by general formula (1).M is Pd or Pt. B-A-B is a tetradentate ligand formed by bonding a ring A to rings B. The ring A is a hydrocarbon aromatic ring or heteroaromatic ring that may have a substituent, and is selected from a benzene ring, etc. The substituent that the ring A may have is selected from a linear or branched C1 to C6 alkyl group, etc. Each of the rings B is a monocyclic heteroaromatic ring that may have a substituent, and is selected from a pyridine ring, etc. The substituent that the ring B may have is selected from a linear or branched C1 to C6 alkyl group, etc. Each X-Y is a bidentate ligand, and atoms bonded to M are selected from C, N, and O atoms. The two bidentate ligands do not bond together.

To provide a semiconductor device with elasticity that can reduce an influence of expansion and contraction on a semiconductor element to stabilize characteristics of the semiconductor element.SOLUTION: A semiconductor device comprises: an elastic resin substrate 2 which includes an acrylic adhesive composition with adhesiveness; a plurality of non-elastic resin substrates 3 which are arranged side by side in a plane of the elastic resin substrate 2; and a plurality of semiconductor elements 4 which are arranged on respective planes of the plurality of non-elastic resin substrates 3, wherein the elastic resin substrate 2 has adjacent non-elastic resin substrates of the plurality of non-elastic resin substrates 3 made to freely expand and contract.SELECTED DRAWING: Figure 2

An electronic device with which a user can see an image with less distortion is provided. The electronic device includes a display apparatus and an optical device. The optical device includes a position adjustment mechanism and can perform eyesight adjustment. The display apparatus displays a correction image that has been distorted from an original image into a barrel shape to correct distortion aberration of a lens. A correction amount of the correction image (a size and a distortion rate of the image) is changed according to the position of the lens moved by the position adjustment mechanism. This enables the image to be corrected to an optimal state at all times even when the position of the lens is moved for the eyesight adjustment and thereby improves the quality of the image to be seen.

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.

Various embodiments of solid state transducer (“SST”) devices are disclosed. In several embodiments, a light emitter device includes a metal-oxide-semiconductor (MOS) capacitor, an active region operably coupled to the MOS capacitor, and a bulk semiconductor material operably coupled to the active region. The active region can include at least one quantum well configured to store first charge carriers under a first bias. The bulk semiconductor material is arranged to provide second charge carriers to the active region under the second bias such that the active region emits UV light.

The invention refers in a first aspect to self-supporting film comprising green luminescent crystals (1), red luminescent crystals (2), and a polymer (3). The green luminescent crystals (1) are perovskite crystals. The red luminescent crystals (2) are zincblende or wurzite, preferably zincblende, crystals. A second aspect of the invention refers to a solid polymer composition (100). A third aspect of the invention refers to a light emitting device comprising either the solid polymer composition (100) or the self-supporting film.

A method for manufacturing a display device that can easily achieve higher resolution is provided. A display device having both high display quality and high resolution is provided. A first EL film is deposited over a first pixel electrode, a first sacrificial film is formed to cover the first EL film and a first electrode, and the first sacrificial film and the first EL film are etched, so that a first EL layer is formed over the first pixel electrode. Then, the first sacrificial film is removed to expose the first electrode. Furthermore, a common electrode is formed over the first EL layer and the first electrode. The first EL film is etched by dry etching, and the first sacrificial film is removed by wet etching.

The invention belongs to the technical field of electroluminescent fiber devices, and particularly relates to a dynamic color-changing electroluminescent fiber device and a preparation method thereof. The electroluminescent fiber device comprises a three-color electroluminescent fiber and a driving control circuit, the three-color electroluminescent fiber comprises an inner electrode conductive fiber, an outer electrode conductive fiber, three luminescent functional layers and a shared electrode; the driving control circuit comprises a lithium battery, an FPGA (Field Programmable Gate Array), an isolation inversion boost module and the like; the lithium battery supplies power to the whole circuit; the circuit system provides four independent output ports which are connected with the four electrodes; the three light-emitting functional layers are of a stacked structure formed by red, green and blue light-emitting active slurry through a step-by-step coating method, and the driving circuit independently controls the active light-emitting layers of the three colors, so that the light-emitting colors are free of crosstalk and can be regulated and controlled in real time, and dynamic color-changing light emitting of full-color-gamut light emitting is achieved. The color gamut is wide, the stability is high, and color crosstalk between the light-emitting layers is avoided; the method is good in repeatability, low in cost and suitable for industrial production.

This thin film includes chalcogenide perovskite particles and an organic component that modifies the particles. A mean square roughness of the thin film surface is less than 1000 nm.

The present invention relates to organic electroluminescent materials and devices. Novel ligands for metal complexes containing a five-membered ring fused on a pyridine or pyrimidine ring, combined with partially fluorinated side chains, which exhibit improved external quantum efficiency and lifetime are disclosed.

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 a first compound represented by a formula (1) below as a first host material, the first compound containing at least one group represented by a formula (11) below, the second emitting layer contains a second compound represented by a formula (2) below as a second host material, and the first emitting layer and the second emitting layer are in direct contact with each other.

According to an aspect, a detection device includes: a plurality of optical sensors arranged in a matrix having a row-column configuration; and an optical filter provided facing a surface for detecting light with the optical sensors. The optical filter includes a base configured not to transmit light and a plurality of apertures provided in the base and configured to transmit light. An arrangement of the apertures in the base comprises an arrangement in which the apertures are arranged spirally outward clockwise from a predetermined area and arrangement in which the apertures are arranged spirally outward counterclockwise from the predetermined area. The predetermined area contains a predetermined point.

A light emitting element, display device, and method of manufacture of the same are disclosed. In one example, a light emitting element includes a lower layer / interlayer insulation layer; a light reflection layer formed on the lower layer / interlayer insulation layer; an upper layer / interlayer insulation layer; a first electrode formed on the upper layer / interlayer insulation layer; an insulation film formed at least on a region of the upper layer / interlayer insulation layer where the first electrode is not formed; an organic layer formed over the insulation film from above the first electrode, the organic layer having a light emitting layer including an organic light emitting material; and a second electrode formed on the organic layer. A groove is formed in a portion of the upper layer / interlayer insulation layer located in an edge region of the light emitting element, and an upper portion of the groove is closed with the insulation film.

A single photon source device is proposed. The device may include a reflection layer including a base portion and a recessed portion having a concave shape that is recessed from the base portion, a single emitter disposed within the recessed portion of the reflection layer and configured to emit a single photon, a solid resonator configured to fill the recessed portion to surround the single emitter, and a solid immersion lens portion disposed on the solid resonator to surround the solid resonator.

A display device includes: a substrate; a flattened layer; at least one first light-emitting element; at least one second light-emitting element; at least one first drive circuit; and at least one second drive circuit, wherein light emitted by the first light-emitting element is taken out through the substrate, light emitted by the second light-emitting element is taken out from a direction opposite to a direction in which the light emitted by the first light-emitting element is taken out, the first light-emitting element is provided in an opening provided in the flattened layer, the second light-emitting element is provided in a layer above the flattened layer and overlaps the flattened layer, and the first drive circuit and the second drive circuit are provided closer to the substrate than the second light-emitting element.

To provide a light-emitting device with excellent characteristics.SOLUTION: In a tandem type light-emitting device, an electron transport layer of a light-emitting unit that is closest to a cathode includes a first organic compound containing a triazine skeleton, an intermediate layer includes a second organic compound containing a phenanthroline skeleton, a light-emitting layer of each light-emitting unit includes the same light-emitting center material and two kinds of organic compounds that form an excited complex, one of or both the two kinds of organic compounds include deuterium, and the first light-emitting layer and the second light-emitting layer are different from the light-emitting layer included in at least one of a plurality of other light-emitting devices adjacent to the aforementioned light-emitting device.SELECTED DRAWING: Figure 1

A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a first element, a first reflective film, and an insulating film. The first element includes a first electrode, a second electrode, and a layer containing a light-emitting material; the layer containing a light-emitting material includes a region interposed between the first electrode and the second electrode; the first electrode has a light-transmitting property; and the first electrode has a first thickness. The first electrode is interposed between a region of the first reflective film and the layer containing a light-emitting material, and the first reflective film has a second thickness. The insulating film includes a first opening portion, and the first opening portion overlaps with the first electrode. The insulating film has a first step-like cross-sectional shape, and the first step-like cross-sectional shape surrounds the first opening portion. The first step-like cross-sectional shape includes a first step, and the first step is larger than or equal to a thickness obtained by adding the second thickness to the first thickness.