16results about How to "Improve luminous performance" patented technology

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.

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 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.

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 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.

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.

This invention relates to the field of advanced petrochemical new materials technology, and discloses a luminescent composite material, its preparation method, and its application. The composite material comprises the following components: homopolymer polypropylene, polybutylene succinate, a compatibility modification system, double-modified rare-earth strontium aluminate luminescent powder, dispersant, antioxidant, weathering agent, toughening agent, nucleating agent, and silane coupling agent. This invention employs a compatibility modification system composed of maleic anhydride-grafted PP-g-PBS copolymer and double-modified nano-montmorillonite. The maleic anhydride-grafted PP-g-PBS copolymer constructs a chemical link between the polypropylene and polybutylene succinate molecular chains through a grafting reaction, reducing the interfacial tension between the two resins. The double-modified nano-montmorillonite, after ionic liquid intercalation and silane grafting treatment, exhibits increased interlayer spacing and improved surface activity, uniformly dispersed in the matrix, and acts as a physical crosslinking point, improving the compatibility of the matrix resin and preventing phase separation.

The application discloses a luminous tire, which comprises tire side rubber and a luminous layer, wherein the luminous layer is arranged on the surface of the tire side rubber, the luminous layer is doped with a fluorescent substance, the fluorescent substance can absorb heat of the tire by thermal excitation luminescence, and the fluorescent substance can be excited to luminescence by temperature difference. The tire side rubber is provided with the luminous layer, and the fluorescent substance is doped into the luminous layer, so that the fluorescent substance falling and uneven distribution caused by the fluorescent substance being coated on the surface of the tire are avoided, the tire has stable luminescence effect, the fluorescent substance can be excited to luminescence by heat, so that heat generated by the tire in the use process is absorbed, the tire is cooled, and the service life of the tire is prolonged; and the fluorescent substance can also be excited to luminescence by temperature difference, so that heat on the surface of the tire and heat of sunlight are fully utilized, and the continuity and stability of tire luminescence are ensured.

This invention belongs to the technical fields of optoelectronic devices, spin optoelectronics, and organic-inorganic hybrid semiconductor materials. Specifically, it relates to a circularly polarized electroluminescent device based on a one-dimensional / three-dimensional perovskite heterostructure and its implementation method. The circularly polarized electroluminescent device includes a substrate, a bottom electrode layer, an electron transport layer, a light-emitting layer, a hole transport layer, and a top electrode stacked sequentially. The light-emitting layer is a one-dimensional / three-dimensional perovskite heterostructure formed in situ by chiral one-dimensional perovskite and three-dimensional perovskite. This invention constructs a one-dimensional / three-dimensional perovskite heterostructure within the light-emitting layer, utilizing the chiral properties of the one-dimensional perovskite to induce lattice distortion in adjacent three-dimensional perovskite at the heterostructure interface. This results in intrinsic structural chirality and excited-state chirality in the three-dimensional perovskite light-emitting region, achieving stable circularly polarized electroluminescence without the need for an external magnetic field or spin injection, thus enabling the device to simultaneously achieve high luminous efficiency and good stability.

This invention provides a carbazole compound and its organic electroluminescent device, specifically relating to the field of organic optoelectronic materials technology. When used as the host material of the emitting layer in an organic light-emitting device, the compound of this invention can improve the mobility of charged holes in the host material, enhancing the exciton recombination effect; simultaneously, it achieves efficient energy transfer from the host material to the doped material, and limits energy loss caused by energy backflow or exciton diffusion, thus improving the device's light-emitting performance. The compound of this invention exhibits good film-forming properties and thermal stability. When used as a capping layer, it can improve optical efficiency and reduce light loss reflected by nearby electrodes during emission, thereby improving device performance. The preparation method of the compound of this invention is simple, the raw materials are readily available, and it can be widely applied in fields such as organic thin-film transistors and panel displays, showing good application effects and industrialization prospects.

The utility model discloses a kind of LED packaging structure and LED module, including substrate, and located at the light source of spotlight area and floodlight area light source of the front of the substrate, the spotlight area light source is located in the center of the substrate, the floodlight area light source surrounds the spotlight area light source, the floodlight area light source includes even floodlight chip, the geometric center of the figure surrounded by the center of the spotlight area light source and the center line of each floodlight chip coincides, the heat dissipation structure is equipped below the spotlight area light source, the heat dissipation structure is columnar and extends to the substrate, and the isolation device is arranged between the spotlight area light source and the floodlight area light source. Realize the multifunctional compatibility of internal spotlight and external floodlight, reduce system volume, adopt split type heat dissipation path, and the heat dissipation effect is good.

This utility model describes a microphone mesh head and a microphone. The microphone mesh head includes: an optical fiber mesh; the optical fiber mesh includes multiple optical fibers arranged in an interlaced braided structure, and the optical fiber mesh is used to cover the pickup end of the microphone; the optical fiber mesh includes a light-inlet end, and the light-inlet end is directed towards the light-emitting component of the microphone. With this structure, the light from the light-emitting component in the microphone can be evenly dispersed into each optical fiber through the light-inlet end of the optical fiber mesh and propagated along the optical fibers, allowing the entire optical fiber mesh to emit light. Therefore, the microphone mesh head can achieve overall light emission, and the light emission effect is more uniform, improving the overall aesthetics. Furthermore, compared with traditional sponge mesh heads, the optical fiber mesh has higher flexibility and impact resistance, better pop-proof performance, and effectively reduces the interference of airflow on the sound wave signal when the user speaks.