32results about How to "Does not affect luminosity" patented technology

A method for manufacturing a distributed feedback laser array includes: forming a bottom separate confinement layer on a substrate; forming a quantum-well layer on the bottom separate confinement layer; forming a selective-area epitaxial dielectric mask pattern on the quantum-well layer; forming a top separate confinement layer on the quantum-well layer through selective-area epitaxial growth using the selective-area epitaxial dielectric mask pattern, the top separate confinement layer having different thicknesses for different laser units; removing the selective-area epitaxial dielectric mask pattern; forming an optical grating on the top separate confinement layer; and growing a contact layer on the optical grating. The present disclosure achieves different emission wavelengths for different laser units without significantly affect emission performance of the quantum-well material.

The invention provides an ultraviolet LED lamp bead which adopts the structure that a transparent silicone pad is arranged at a position right above a chip in a lamp body; fluorescent powder is arranged between the silicone pad and the chip; a heat dissipation column is also arranged on the lamp body; the chip is in contact with the heat dissipation column. Through the arrangement of the silicone pad and the fluorescent powder, the problems of ageing and yellowing of the lamp body can be effectively avoided, the illumination performance of the lamp body can be optimized, and the service life of the lamp body can be greatly prolonged on the premise that the luminescence performance of the lamp body is not impacted; through the arrangement of the heat dissipation column, the heat dissipation speed of the chip can be greatly improved, and thus the lamp body can be protected from ageing and yellowing, and the service life of the lamp body can be further prolonged.

The invention discloses a method for manufacturing an AlGaInP-LED (Light Emitting Diode) integrated micro display component with a single-side electrode structure, wherein the steps comprises: etching multiple first grooves which are mutually intersected on a device body; growing a lower electrode metal layer on the bottom part of each groove to form the lower electrode metal layer; growing an insulating medium layer above a lower electrode; corroding an area of the lower electrode metal layer outside a lower electrode diagram downward till reaching a certain depth in an N-shaped substrate layer in order to form multiple second grooves; filling opaque diaphragms into the second grooves and the upper part of a protection medium of the lower electrode; manufacturing an upper electrode above a light emitting unit; and electroforming upper and lower electrode leads. With the adoption of the method for manufacturing the LED array micro display device with the planar electrode structure disclosed by the invention, the process difficulty resulting from the manufacturing of the electrodes on the front face and the back face respectively can be prevented; since the manufactured micro display device is provided with the double bar type upper and lower electrodes of which the different faces are perpendicular to each other, the more even current distribution can be obtained; and therefore, the micro display device available for even luminance is obtained.

The invention belongs to the field of display technology, in particular to a light emitting diode and a preparation method thereof. The light-emitting diode provided by the present invention includes: an anode, a cathode, a light-emitting layer arranged between the anode and the cathode, a transition layer arranged between the cathode and the light-emitting layer, and the materials of the transition layer include: noble metal nanoparticles and metal organic framework materials, Metal-organic framework materials have a pore structure, and noble metal nanoparticles are loaded in the pore structure. The problem of unbalanced electron transport rate and hole transport rate existing in the existing light-emitting diode is solved, and the light-emitting performance of the light-emitting diode is improved.

The invention discloses a preparation method of low-melting-point fluorescent glass and belongs to the field of preparation of glass materials. The preparation method is characterized in that the (NaPO3)6-NaF-CaO-B2O3-Sb2O3-Li2O-ZnO low-melting-point fluorescent glass is provided through the optimized design of the glass components, and the specific preparation steps are provided as follows: (1) firstly preparing the low-melting-point bare glass; (2) then mixing a commercial yttrium aluminium garnet structure yellow fluorescent powder and the low-melting-point glass powder in an alumina crucible, and firing and forming. The cost of the provided components for preparing the fluorescent glass is low, the operation process is simple and effective, the heat resisting property and the machiningproperty are excellent, the energy consumption in the production is low, the chemical stability is excellent, a solution is provided for solving the problems of a high-power LED device like light attenuation and color temperature drifting, and the limitations of the traditional fluorescent powder are expected to be broken.

The invention provides a water-based acrylic fluorescent paint and a preparation method thereof. The preparation method comprises the following steps: preparing a silica-coated modified phosphor powder; adding the silica-coated modified phosphor powder to an aqueous solvent Stir in medium to obtain a modified phosphor suspension, add the modified phosphor suspension to the emulsion containing acrylate monomers, and add an initiator to react, adjust the pH value to 6.5-7.5, and obtain stable nano-SiO 2 / acrylate composite emulsion; the composition of emulsion B includes methyl methacrylate, and the composition of emulsion C includes n-butyl acrylate; the obtained nano-SiO 2 / Acrylic ester composite emulsion is uniformly mixed with a curing agent and an auxiliary agent to obtain a water-based acrylic fluorescent paint. The technical solution of the present invention uses silicon dioxide to coat the modified fluorescent powder, uses the modified fluorescent powder as the core, and the acrylate copolymer as the shell, which not only enhances the luminous performance of the fluorescent powder, but also improves the stability of the emulsion.

The invention relates to a firefighting guide illumination line comprising a continuously luminous strong electroluminescence line (1), a PVC transparent plastic layer (2), an electroluminescence line (3) and a flexible wire cable (4) parallel to the electroluminescence line (3), wherein the PVC transparent plastic layer (2) is arranged outside the strong electroluminescence line (1); the electroluminescence line (3) and the flexible wire cable (4) are arranged in the strong electroluminescence line (1) which is wound on a rotatable wire coil wheel (6) with a stand (5); the center of the wirecoil wheel (6) is provided with charging batteries (7) and a driving controller (8) and is connected in series with one end of the strong electroluminescence line (1); the power-on strong electroluminescence line (1) can continuously illuminate when being electrified, and the wire coil wheel (6) is used to randomly withdraw and release the strong electroluminescence line (1). The firefighting guide illumination line is mainly applied to underground places, such as markets, subways, coal mine, and the like for rescue and guides refugees to evacuate towards a destination direction.

The invention belongs to the field of white light LEDs, and specifically discloses a fluorescent powder quantum dot composite particle, a preparation method and application thereof. The method comprises the following steps: preparing silicon dioxide on the surface of the fluorescent powder, thereby forming a composite structure of fluorescent powder-silicon dioxide; performing positively charged modification on the surface of the fluorescent powder-silicon dioxide to obtain positively charged fluorescent powder-2 Silicon oxide; Negatively charge the surface of quantum dots to obtain negatively charged quantum dots; Through electrostatic adsorption, the negatively charged quantum dots are adsorbed on the surface of positively charged phosphor-silicon dioxide, thereby preparing phosphor quantum dots Point composite particles. The phosphor quantum dot composite particles prepared by the method provided by the present invention keep the phosphor powder and quantum dots relatively static during the encapsulation process, ensure the optical consistency of the quantum dot white light LED, and solve the problem caused by the large difference in particle size between the phosphor powder and quantum dots caused by subsidence and stratification.

The invention relates to an organic electroluminescence panel and a manufacturing method thereof. The organic electroluminescence panel comprises a base plate, a bottom electrode, an organic layer, a top electrode and a sealing layer, wherein the bottom electrode, the organic layer, the top electrode and the sealing layer are formed on the base plate from bottom to top; the distance between the edges of the bottom electrode, the organic layer and the top electrode in at least one direction and the edge of the base plate is increased progressively, and the distance between the edges of the bottom electrode, the organic layer and the top electrode in at least the other direction and the edge of the base plate is decreased progressively; the part of the top electrode overlapped above the bottom electrode is formed in the range of the organic layer; the sealing layer is covered on the bottom electrode, the organic layer and the top electrode, and at least part of the bottom electrode is exposed out in the distance-increased direction; and at least part of the top electrode is exposed out in the distance-decreased direction. The invention adopts a technical means that each layer structure on the organic electroluminescence panel relatively offsets for a certain distance, and can reduce the requirement of alignment accuracy. Accordingly, the invention can simplify equipment and process, can reduce cost, and can increase manufacturing speed and yield.

The invention relates to a nitrogen oxide fluorophor with the anti-static function. The nitrogen oxide fluorophor is characterized by comprising an inorganic compound with the anti-static function, wherein the inorganic compound comprises an anti-static material, a matrix material and a light-emitting material, elements of the matrix material and elements of the light-emitting material are subjected to solid solution to form a precursor midbody of the nitrogen oxide fluorophor, and the surface of the precursor midbody of the Nitrogen oxide fluorophor and the elements of the anti-static material are subjected to solid solution to form the final nitrogen oxide fluorophor. The nitrogen oxide fluorophor has the high anti-static effect, is good in chemical stability and applicable to various light-emitting devices. The preparation method adopts dual technologies and a two-stage method, and is simple, reliable and applicable to industrial batch production and manufacturing.