41results about How to "Improve luminous performance" patented technology

The invention provides a sky-green light source LED packaging device, and belongs to the technical field of luminescent materials. The azure light source LED packaging device comprises a light-emitting substrate, wherein the light-emitting substrate comprises fluorescent powder; the fluorescent powder comprises blue-green fluorescent powder and green fluorescent powder; the light-emitting peak wavelength of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba1-x-ySrxEuy) Si2N2O2, and x is greater than or equal to 0.001 and less than or equal to 0.3; 0.001 < = y < = 0.1; the blue-green fluorescent powder is of an orthogonal structure and is crystallized in a space group Pcca. According to the invention, on the basis of realizing azure luminescence, the luminescence performance of the azure luminescence is improved, especially the luminescence intensity of the azure luminescence is improved, and the anti-aging performance of the azure light source LED packaging device is also improved.

The invention relates to perovskite quantum dot glass powder and a preparation method thereof, the chemical formula of the glass powder is CsPb (Ax B1-x) 3, A and B are one or more of Cl, Br or I, x is more than or equal to 0 and less than or equal to 1, and the total molar amount of the components is 100 mol%. According to the perovskite quantum dot glass powder, the fluorescence wavelength can be adjusted through component change, the preparation method is simple and low in toxicity, and the perovskite quantum dot glass powder has high stability and does not need an annealing process. The method can be widely applied to the fields of display devices, lighting equipment, photovoltaic devices, photoelectric sensors and the like.

The application discloses a kind of wide temperature range stable copper cluster scintillator and its preparation method and application, the scintillator chemical general formula is Cu4X4 (dppyme) 2, by introducing methyl in pyridine ring 6 position structure space constraint, induce to form long-range ordered crystal packing phase, significantly enhance the lattice rigidity.This material has the microcosmic energy level structure of thermal activation delayed fluorescence (TADF) and self-trapped excitor (STE) light emitting mechanism synergism, in-190 ℃ to 150 ℃ extremely wide temperature range, excellent radiation luminescence stability is shown.The application is prepared by room temperature solution method, and process is simple.The flexible film constructed using the material improves the mechanical stability by polymer embedding process, and the spatial resolution reaches 27.8 lp / mm, which is suitable for X-ray detection and imaging in extreme environments such as deep space exploration, polar scientific research and high-temperature industrial detection.

The utility model belongs to the technical field of LED lighting, specifically a kind of frameless panel lamp for label backlight, including frame, backplate, light guide plate and diffusion plate, frame is provided with two groups of relative arrangement, the side surface of two groups of frame mutually close is provided with mounting groove along the length direction of itself, the groove bottom of mounting groove is provided with light bar, backplate, light guide plate and diffusion plate are sequentially abutment settings, and backplate and diffusion plate are respectively with the two side walls of mounting groove along the length direction of itself abutment, frame is provided with inclined plane at the mounting groove slot edge, inclined plane is arranged in the side close to diffusion plate, and from the direction of mounting groove slot, the cross-sectional area of frame close to the side of mounting groove slot is less than the cross-sectional area of the side close to the groove bottom of mounting groove. The design of the present application through inclined plane reaches the effect of frameless, need not be slotted design in the side edge of diffusion plate, reduce the thickness of diffusion plate, can also enhance the luminous effect of panel lamp.

The utility model belongs to the technical field of electronic atomization, and provides a light-emitting assembly and an electronic atomizer thereof, the light-emitting layer, the light guide layer and the light uniformizing layer are arranged in a stacked mode, light emitted by the light-emitting layer sequentially passes through the light scattering effect of the light guide layer and the light uniformizing layer, and the uniformity of the light emitted outwards by the light-emitting assembly is ensured. Through the guiding and uniform dispersing effects of the light guide layer and the light equalizing layer on the light emitted by the light emitting part, the uniform light emitting effect is achieved, the phenomenon that the local brightness of the area where the light emitting part is located is highlighted is effectively avoided, and the phenomenon that lamp beads are exposed is avoided.

The utility model belongs to LED technical field relates to a circular surface luminous LED packaging structure, including the substrate, and the bowl cup that is moulded in the upper of substrate is used for the bowl cup of the side surface luminous of LED wafer on the substrate is shielded, wherein, the thickness of substrate is D, the thickness of bowl cup is d, and satisfy following relation formula: 0.25 < d / D < 2. The utility model discloses through the design of the bowl cup of not light -proof, can form the cup -shaped structure of the shielding effect in the four around of LED wafer, so monochromatic wafer luminous or mixed color luminous all can present the luminous surface effect of positive surface cup mouth circular shape, simultaneously, still can promote luminous effect, make LED luminous brightness keep at higher level to better reach energy -conserving effect, in addition, its size length -width -thickness can be consistent with the existing product, so terminal use also does not need to make design modification and can replace use, the practicality is better, the compatibility is better, the effect is better.

The invention provides an X-ray luminescent crystal material containing heavy atoms as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The chemical formula of the X-ray luminescent crystal material is 2XL at-AMnBr4, 2XL represents dihalogen substituted p-phenylenediamine hydrobromide, halogen atoms are one or two of Cl, Br and I, and A represents crown ether. According to the invention, heavy atoms are introduced into the organic cation module of the organic-inorganic hybrid metal halide through the multistage supramolecular self-assembly effect for the first time, the luminescence property and stability of the X-ray luminescent material are improved, and the luminescent quantum yield reaches 60% or more. The X-ray luminescent material provided by the invention is used as a scintillator of a core component, can efficiently convert X-rays into visible light signals, and provides more accurate and rapid analysis and detection for multiple fields such as safety inspection, scientific research, medical diagnosis and the like.

This application relates to the field of two-dimensional semiconductor material preparation technology, specifically to a method for preparing monolayer molybdenum disulfide by dual-sulfur source chemical vapor deposition, comprising the following steps: Step 1, providing a chemical vapor deposition reaction chamber having an upstream region, a growth region, and a downstream region; Step 2, arranging a molybdenum-containing precursor in the growth region, and arranging a substrate above or opposite to the molybdenum-containing precursor; Step 3, arranging a first sulfur-containing precursor in the upstream region and a second sulfur-containing precursor in the downstream region; Step 4, introducing a carrier gas into the reaction chamber and heating it to cause the first sulfur-containing precursor, the second sulfur-containing precursor, and the molybdenum-containing precursor to volatilize and undergo a chemical vapor deposition reaction on the substrate surface to form a monolayer molybdenum disulfide. This invention employs a dual-sulfur source strategy, achieving large-size, uniform, and low-defect preparation of monolayer MoS2, facilitating widespread application.

The application discloses a mirror door capable of improving light emitting uniformity, which comprises a frame, a mirror main body, a lamp strip and a light guide structure, the outer periphery of the frame is provided with a surrounding part, the inner periphery of the surrounding part is provided with a groove, the groove is provided with a positioning interval in the length direction and / or the width direction, the mirror main body is arranged at the opening end position of the surrounding part, the lamp strip is arranged at the positioning interval, the irradiation surface of the lamp strip irradiates towards the surrounding part or the side surface away from the surrounding part, the light guide structure comprises a light guide plate opposite to the irradiation surface, and the light guide surface of the light guide plate is opposite to the mirror main body; when the lamp strip is turned on, light rays are mapped on the mirror main body through the light guide plate. The light rays are mapped on the mirror main body through the light guide of the light guide plate and the refraction of the reflection layer, so that the light rays are more uniformly distributed, the problem of dazzling is avoided, and the softness and uniformity of the light rays can be further improved through the diffusion layer.

This utility model discloses a luminescent fishing rod section, comprising a section body, a light source device, and an optical fiber body. The section body includes an opaque section and a transparent section, and has a cavity. The light source device is disposed in the cavity and has a light-emitting part. The optical fiber body includes a smooth section and a rough section integrally formed and connected. By placing the light source device in the cavity, the light emitted by the light-emitting part is emitted from left to right in the cavity. With the left end of the smooth section close to the light-emitting part and the rough section located inside the transparent section, the optical fiber guides the light emitted by the light-emitting part to the rough section. The roughness scatters the light through the transparent section, allowing anglers to observe fish bites based on the light scattered by the rough section. This design, which eliminates the need for a glow stick, significantly improves the rod's ability to indicate fish bites and avoids damage to the delicate rod tip. Furthermore, the smooth section is less likely to scatter the light emitted by the light-emitting part, reducing light damage and resulting in a better luminescent effect on the fishing rod.

The invention provides a reversed polarity light emitting diode and a preparation method thereof, and belongs to the technical field of photoelectron manufacturing. The light-emitting diode comprises a substrate, a metal reflecting layer, a transparent conducting layer, a dielectric layer, an epitaxial layer, a first electrode and a second electrode, the second electrode is arranged on a first surface of the substrate, and the metal reflecting layer, the transparent conducting layer, the dielectric layer, the epitaxial layer and the first electrode are sequentially arranged on a second surface, far away from the first surface, of the substrate; the surface, close to the substrate, of the transparent conducting layer is provided with a plurality of through holes extending to the surface, away from the substrate, of the dielectric layer, metal conducting materials are arranged in the through holes, and the metal reflecting layer is connected with the epitaxial layer through the metal conducting materials. According to the embodiment of the invention, the problem of light absorption of the transparent conductive layer can be improved, and the light-emitting quantity of the light-emitting diode is improved.

The application provides a phenoxazine compound and application thereof, and relates to the technical field of organic electroluminescent materials. The phenoxazine compound can effectively improve the photoelectric performance and service life of an OLED device as a hole transport material.

The utility model relates to the technical field of light-emitting keys, in particular to a light-emitting key which comprises a key shell and a light-emitting assembly, the light-emitting assembly is arranged in the key shell, a light guide assembly is arranged on the surface of the inner wall of the key shell and corresponds to the light-emitting assembly, a light-emitting portion and a light-shading portion are arranged on the surface of the outer wall of the key shell, and the light-emitting portion and the light-shading portion are arranged in the key shell. The light emitting part and the light guide assembly are correspondingly arranged. A light guide assembly is arranged on the surface of the inner wall of a key shell, a light emitting part is arranged on the surface of the outer wall of the key shell, a light emitting assembly and the light guide assembly are correspondingly arranged, and the light guide assembly and the light emitting part are correspondingly arranged; when the light-emitting assembly emits light, the light generated by the light-emitting assembly irradiates the light guide assembly and then emits light through the light-emitting part, so that the key shell emits light so as to be conveniently seen by a user; compared with the prior art, the structure cost and the occupied space of the light guide plate are saved, the size can be smaller, the light emitting effect is greatly improved, and other spare and accessory parts can be planned and placed in the key shell.

The application provides an europium complex and a method for preparing a gallium nitride-based red light emitting diode by using the europium complex as a precursor. 28 H 24 Cl3EuN4, and the chemical formula is Eu(Dmphen)2Cl3, wherein Dmphen represents 4,7-dimethyl-1,10-phenanthroline; the complex does not contain oxygen atoms, can be used as an oxygen-free precursor for growing a gallium nitride-based micro red light LED, fundamentally avoids the fluorescence quenching problem caused by the introduction of oxygen impurities in the existing europium doping technology, significantly improves the red light emitting efficiency of the gallium nitride-based red light LED, and improves the light emitting performance and stability of the device.

The application discloses a white light emitting phosphate glass material based on divalent tin ions and a preparation method thereof, and belongs to the technical field of luminescent glass. The white light emitting phosphate glass material based on divalent tin ions is prepared from raw materials including 2.5-25% of SnO, 15-37.5% of ZnO, 20% of ZnCl2 and 40% of P2O5 in terms of mole percentage; and a reducing agent Si3N4 can be further added when the white light emitting phosphate glass material is prepared. The phosphate glass prepared in air can promote the luminescence of Sn 2+ ; meanwhile, the introduction of the reducing agent can effectively control the valence state of Sn ions, and the phosphate glass has excellent comprehensive performance, a low glass transition temperature, good mechanical performance and thermal stability, and is suitable for white light LED lighting and display devices.

Disclosed is a novel organic light emitting compound represented by Formula 1 having high current efficiency and low driving voltage (see disclosure), and an organic electroluminescent device comprising the same.

This invention discloses a quantum dot hybrid integrated multicolor display, comprising a CMOS wafer substrate, an anode via, a light-emitting unit, a filler layer, and a cover glass. The CMOS wafer substrate contains tungsten vias, and the anode vias are disposed within the CMOS wafer substrate, electrically connected to a CMOS wafer driving circuit through the tungsten vias. The anode vias extend through the surface of the CMOS wafer substrate. A light-emitting unit is disposed on the surface of the anode via on the CMOS wafer substrate, and a driving current signal is provided to the light-emitting unit through the anode via. The filler layer, formed by OC adhesive, covers the CMOS wafer substrate and the surface of the light-emitting unit. The cover glass seals the entire device. This invention avoids the challenges of micro-LED colorization and the immature blue light lifetime efficiency of quantum dots by combining quantum dots with blue LEDs. This quantum dot hybrid integrated multicolor display has a simple structure, is easy to use, has a high manufacturing yield, and exhibits good luminous effect. A manufacturing method for this quantum dot hybrid integrated multicolor display is also disclosed.

The utility model relates to the technical field of LED (light-emitting diode) rainbow tubes, in particular to an annular luminous LED rainbow tube. According to the technical scheme, an LED lamp strip is arranged in each sleeve, connectors are arranged at the two ends of each sleeve, every two adjacent sleeves are in butt joint through the corresponding connectors, sealing sleeves are installed at the positions of the connectors of every two adjacent sleeves, and the sleeves are matched with the LED lamp strips in length. The LED lamp strip is limited through the limiting groove in the inner wall of the sleeve, and it is ensured that the LED lamp strip emits light stably; the positioning bulge and the positioning groove at the connector are accurately butted, so that the mounting efficiency and the annular regularity are improved; and the sealing sleeve is matched with the E-shaped sealing convex edge, so that external water vapor and dust are effectively blocked, the service life of the LED lamp strip is prolonged, the overall protection is enhanced, and better use experience is brought to the LED rainbow tube.

This invention discloses a composite fluorescent ceramic for reflective laser illumination and its preparation method. The method includes: S1: preparing YAG powder, YAG:Ce powder, and YAG-Al2O3 powder respectively; S2: pressing the YAG / YAG:Ce / YAG-Al2O3 composite ceramic blank by dry pressing, followed by vacuum sintering and annealing; S3: forming a conical structure array on the YAG portion of the composite ceramic surface using laser engraving, resulting in a final composite fluorescent ceramic thickness of 4–5 mm. The composite fluorescent ceramic for reflective laser illumination prepared by this invention has advantages as a luminescent material, including high thermal conductivity, high luminous efficiency, and low incident light surface temperature.

The invention provides a light-heat dual response intelligent long afterglow coating which is prepared from the following components in parts by mass: 15 to 25 parts of coated strontium europium dysprosium aluminate, 10 to 20 parts of thermochromic microcapsules, 5 to 15 parts of tungsten-copper heterojunction filler, 30 to 40 parts of organic silicon modified acrylic resin, 3 to 8 parts of interface bridging agent and 2 to 5 parts of modified boron nitride. According to the invention, stable long afterglow performance is ensured, organic unification of photo-thermal response and long-acting luminescence is successfully realized, and the technical problems of mutual interference of components and poor environmental stability in a traditional multifunctional coating are effectively solved.

The invention relates to a preparation method of a red light material based on a ZnO solid film, and relates to the technical field of micro-nano electronic luminescent device manufacturing, and the preparation method comprises the following steps: S1, substrate pretreatment; s2, constructing a vacuum environment; s3, introducing working gas; s4, thin film deposition; s5, taking out the sample; s6, primary annealing; s7, secondary annealing; and S8, obtaining a finished product. According to the preparation method of the red light material based on the ZnO solid film, the preparation cost is remarkably reduced, the technological process is simplified, and the problems that in the prior art, the bulk single crystal processing cost is high, the doping method process is complex, and large-scale production is difficult are solved. The preparation method has the advantages that the preparation method is simple, expensive single crystal raw materials are not needed, toxic or magnetic high-cost doping elements such as cobalt (Co) are prevented from being introduced, the green and low-cost manufacturing process is realized, and the preparation method is simple in process flow, convenient to operate, good in repeatability and stability and very suitable for industrial large-scale commercial production.

This invention discloses a method for preparing polycrystalline fluoride composites through template-based slow-release in-situ molding, belonging to the field of inorganic luminescent functional materials technology. The method includes: providing raw materials, including at least one bulk material as a template, with the raw materials collectively providing A, B, and M ions; mixing the raw materials in a solvent and maintaining the reaction temperature for a specified time, allowing the template to slowly dissolve and release ions; the ions provided by the raw materials react with fluoride ions provided by the solvent and / or the raw materials to grow fluoride crystals in situ on the template surface, with the crystals interpenetrating and fusing to form a polycrystalline composite; after the reaction, the product is obtained by washing and drying. This invention eliminates the need for tableting, high-temperature sintering, and organic binders, and can generate polycrystalline fluorescent fluoride composites of predetermined sizes in a single self-stacking process, avoiding the defects of powder breakage and high-temperature degradation of luminescent ions in traditional two-step methods. It features high luminescence quantum efficiency, a simple process, and ease of industrial production.

The invention provides a stable-ligand CdSe / ZnS quantum dot based on multiple binding sites, a preparation method of the stable-ligand CdSe / ZnS quantum dot and a carrier-injection-free LED device. According to the scheme, the alanine modified long-chain alkylamine ligand is used, alanine endows the ligand with more sites which are mutually combined with the surfaces of the quantum dots, on one hand, more binding sites can passivate surface defects of the CdSe / ZnS quantum dots and improve the luminous efficiency, and on the other hand, the stability of the quantum dots can be improved; the prepared modified quantum dots can be applied to injection-free electroluminescent devices driven by a high-frequency alternating-current electric field.

The invention discloses a rotatable light splitting and guiding optical device, and relates to the field of light guiding devices. The light guide device aims at solving the problems that when an existing light guide device needs to be rotated, light emitting is uneven, and dark areas are prone to occurring. The device comprises a light source set, an anti-dazzling screen and an ellipsoidal light splitting and guiding piece, a light through hole in the anti-dazzling screen is provided with a position for controlling light emitted by the light source set, the light through hole is controlled to be located at the front side focus of the ellipsoidal light splitting and guiding piece, a cavity is formed in the rear side focus, and the cavity wall of the cavity is matched with a refraction face; based on the ellipsoid law, light emitted by a light source group from a light through hole is reflected by an ellipsoid to be converged to a rear focus, and after the light is incident to each refracting surface, the refracted light is distributed to upper and lower groups of light splitting branches on the rear side and light emitting surfaces between the branches according to a design proportion, so that the light can be uniformly distributed. According to the scheme, through the structural design, under the condition that the light source is fixed, the light shading piece and the ellipsoidal light splitting and guiding piece are synchronously rotated, and even light emitting can still be guaranteed.

This invention relates to the field of luminescent materials technology, and discloses a red fluorescent ceramic material, the chemical formula of which is: xMgO:yAl2O3:zSiO2:mEu 2+ Where x, y, z, and m represent the mole fractions of the corresponding elements, and 1 ≤ x ≤ 4, 0.5 ≤ y ≤ 4, 2 ≤ z ≤ 6, and 0.01 ≤ m ≤ 0.10; the red fluorescent ceramic material is prepared by air sintering and reducing atmosphere sintering. The red fluorescent ceramic prepared in this application has excellent thermal stability and can directly produce bulk samples with complete structure and controllable size, showing broad application prospects in high color gamut displays, high-power laser lighting, and other fields.

The utility model relates to LED packaging technical field especially a sealed protection type patch type LED light emitting diode, including fixed end electrically connected piece, LED wafer sets up on fixed end electrically connected piece, and the fixed end electrically connected piece and the welding end electrically connected piece are embedded in the one side surface position of the encapsulant, and the window is seted up on the encapsulant, and the LED wafer is exposed in the window middle position, and the gold wire both ends are connected with LED wafer and welding end electrically connected piece electricity respectively, and the light -transmitting body is installed in the edge position of window, and with the encapsulant constitutes sealed cooperation, can effectively avoid the light flicker, the brightness attenuation, the local extinguishing etc. phenomenon, and the luminous performance is more stable. Meanwhile, the short circuit failure caused by the welding spot corrosion aggravation is eliminated, the risk that the LED module burns is reduced significantly, the service life is greatly prolonged, the maintenance replacement frequency is reduced, and the use cost of each application field is reduced.

This invention belongs to the field of organic electroluminescent materials, and discloses an organic electroluminescent material, an organic electroluminescent material containing two main bodies, and an organic electroluminescent device. The organic electroluminescent material containing two main bodies disclosed in this invention includes a first main body material and a second main body material. When the organic electroluminescent material of this invention or the organic electroluminescent material containing two main bodies is applied to an organic electroluminescent device, it has low driving voltage, high luminous efficiency, and long service life.

Disclosed are a novel organic light-emitting compound having high current efficiency and low driving voltage represented by Formula 1 (see the disclosure), and an organic electroluminescent device comprising the same.

This invention relates to the field of traffic engineering technology, specifically to a method for preparing and paving prefabricated luminescent concrete road markings. The method includes: preparing prefabricated luminescent concrete marking slabs made of white silicate cement, aggregates, long-afterglow luminescent materials, and admixtures through casting and curing; embedding the slabs into installation grooves formed in the road surface, ensuring their upper surfaces are flush with the road surface; and filling the joints with sealant. This invention employs a prefabricated assembly process, enabling industrialized production and quality control, and solving problems such as construction pollution, poor visibility in rainy and nighttime conditions, and difficult maintenance associated with traditional road markings. The slabs incorporate luminescent materials throughout, resulting in excellent nighttime visibility; the optimized mix ratio gives the slabs both superior mechanical and luminescent properties; the service life is 5-10 times that of traditional road markings; the total life-cycle cost is reduced by 30%-50%; and it is environmentally friendly. It is suitable for newly constructed asphalt pavements, newly constructed cement pavements, and the reconstruction of existing roads.