47results about How to "Good water and oxygen barrier" patented technology

The invention provides a flexible OLED device and a packaging method therefor. The flexible OLED device comprises a flexible substrate and an organic light emitting layer, wherein the organic light emitting layer is positioned on the flexible substrate; a first barrier layer is deposited on the organic light emitting layer; the first barrier layer comprises a first inorganic thin film layer and a second inorganic thin film layer; a buffer layer is prepared on the first barrier layer; and a second barrier layer is deposited on the buffer layer. The flexible OLED device is provided with the first barrier layer, the second barrier layer and the buffer layer; the barrier thin film structure is optimized, so that the flexible OLED device has a good water-oxygen-barrier performance; meanwhile, the flexible OLED display is lighter and thinner, and better in bending performance; and in addition, the service life of the flexible OLED display is prolonged.

The invention discloses a packaging process of a flexible semiconductor film electronic device. The packaging process comprises a water and oxygen blocking layer preparation working procedure, wherein a water and oxygen blocking layer is formed by one or more water and oxygen blocking units in a stacking mode, each water and oxygen blocking unit comprises an organic blocking layer and an inorganic blocking layer, an uneven morphology structure is arranged on the surface of each organic blocking layer, and each inorganic blocking layer is arranged on the upper surface of the corresponding organic blocking layer. The uneven morphology structure on the surface of an organic film is a regular pattern or an irregular pattern. The uneven morphology structure on the surface of each organic blocking layer is formed in a photoetching mode or physical embossing mode or through particle addition. The uneven morphology structure of the surface of each organic blocking layer is of a rectangular structure or zigzag structure or arc structure. The flexible semiconductor film electronic device is simple in manufacturing process and high in water and oxygen blocking performance, and the device can be kept to be thin while the good water and oxygen isolation performance of the device can be achieved.

The invention discloses a display device, a backlight module, a quantum dot optical diaphragm and a preparation method thereof. The quantum dot optical diaphragm comprises a quantum dot layer, a first composite water oxygen barrier layer which covers the surface of the light inlet side of the quantum dot layer and a second composite water oxygen barrier layer which covers the surface of the light outlet side of the quantum dot layer; the first composite water oxygen barrier layer and the second composite water oxygen barrier layer are each selected from one or a combination of any two of a first film structure, a second film structure and a third film structure, wherein the first film structure is the composite water oxygen barrier layer which is composed of polyethylene terephthalate (PET) and graphene, the second film structure is a graphene layer, and the third film structure is the water oxygen barrier layer which is composed of PET and aluminum oxide. Compared with the prior art, the water oxygen barrier property, the photopermeability and the structural stability of the quantum dot optical diaphragm are obviously improved.

The invention discloses a quantum dot material, a preparation method, a quantum dot film, a backlight module and a display device, and belongs to the technical field of liquid crystal display. The preparation method of the quantum dot material includes the steps of a, evenly mixing silicate ester, organic solvent, silane coupling agent, polymer monomer, initiator and water, wherein the polymer monomer is a monomer for preparing a transparent flexible polymer, and the initiator is an initiator for initiating the polymerization reaction of the polymer monomer; b, adding quantum dots into a system obtained in the step a to be evenly mixed; c, making the system obtained in the step b react for a preset period of time at preset temperature to form wet gel; d, converting the wet gel obtained in the step c into aerogel through a supercritical drying method or a freeze-drying method to obtain the quantum dot material. The quantum dots are loaded on a three-dimensional network structure of silicon dioxide/organic polymer hybridized aerogel, the overlapping rate of the quantum dots is decreased, the light-emitting efficiency of the quantum dot film is improved, and meanwhile the water-oxygen insulation performance is improved.

An electroluminescent device comprises a light emitting function layer and a package layer, wherein the function layer includes a substrate, an organic material layer and a cathode layer between the substrate and the organic material layer; the package layer includes a polymer layer contacting with the cathode layer, and a ceramic layer; and the polymer layer contains polymer and a drying agent. By adopting the polymer layer containing the drying agent and the polymer, the electroluminescent device has good water-oxygen barrier property, reduced thickness, improved heat dissipation performance, prolonged service life and improved market value. In addition, a protective cover is added to form a sealed space filled with the mixture of nitrogen and hydrogen together with the substrate according to the preferred embodiment, so as to further improve the heat dissipation performance, the water-oxygen barrier property and the service life of the device.

The invention provides a polymerization process of a quantum dot doped PMMA (Polymethyl Methacrylate) body, a light guide plate manufacturing process and a light guide plate. PMMA with high stability and high light transmittance is used as a carrier, and red and green quantum dots with different ratios and concentrations are adjusted; after the PMMA is dissolved into less solvent, a mixture is chemically dispersed into methyl methacrylate (MMA); finally, uniform doping of the quantum dots in the PMMA is realized in a body polymerization manner. The doped PMMA is poured and molded, and then the PMMA is pressed into a quantum dot light guide plate with a water and oxygen obstructing capability through a layer-by-layer assembling process. According to the method provided by the invention, the quantum dots are uniformly doped into the light guide plate in a molding process of a light guide plate material, so that the quantum dots and the light guide plate are fused. The packaging problem of the quantum dots in a backlight module is solved; meanwhile, the stability and light transmittance of the quantum dots are improved.

The invention discloses mildew-proof and fresh-keeping coated paper and a processing method thereof. The mildew-proof and fresh-keeping coated paper is prepared from a mildew-proof and fresh-keeping coated paper raw paper layer and a blocking mildew-proof coating formed on the raw paper layer, wherein the blocking mildew-proof coating is prepared from the following components in parts by weight: 50 to 60 parts of polyvinylidene chloride emulsion, 10 to 20 parts of an ethylene-vinyl acetate copolymer emulsion, 1 to 5 parts of isocyanate, 5 to 20 parts of a micro-encapsulated mildew preventive,0.5 to 2 parts of emulsifying agent and 0.05 to 0.5 part of de-foaming agent; a capsule membrane material of the micro-encapsulated mildew preventive is cyclodextrin or chitosan; a capsule core of themicro-encapsulated mildew preventive is selected from at least one of an organic mildew preventive and an inorganic mildew preventive. The mildew preventive in the mildew-proof coating of the mildew-proof and fresh-keeping coated paper is subjected to micro-encapsulation treatment and the mildew preventive is covered with a bag film, so that the slow release and mildew prevention effects are realized and the mildew-proof and fresh-keeping coated paper can keep antibacterial and mildew-proof effects for a long time; the mildew-proof and fresh-keeping coating has good water-oxygen stopping performance and can keep moisture in packages constant.

The invention discloses an organosilicone/inorganic silicon hybridization blocking coating composition and a preparation method and an application thereof. The organosilicone/inorganic silicon hybridization blocking coating composition comprises the following components according to the parts by weight: 30-70 parts of multi-functional cage-type polysilsesquioxane, 25-65 parts of an organic siliconresin, 0-15 parts of an organosilicone-modified (methyl) acrylic resin, 0.2-5 parts of a photoinitiator, and 5-15 parts of an assistant. The organosilicone/inorganic silicon hybridization blocking coating composition has the higher water-oxygen blocking property to a common organic layer material, excellent resistance to yellowing, good glossiness, and better interface bonding force with an inorganic layer, so that a blocking layer can achieve the water-oxygen blocking property of a common multi-layer blocking layer material under the condition of reducing the number of layers to three layers. The blocking coating can be used for greatly reducing the production time and cost of a plastic base material blocking layer, and improving the reliability of the blocking layer.

The invention discloses an encapsulating material, an organic barrier cured product and a quantum dot device. When the encapsulating material is used for encapsulating the quantum dot device, the formed organic barrier cured product can have a good water-oxygen barrier function, so that the service life of the quantum dot device is prolonged. The encapsulating material is prepared from cyclic organosilicone modified epoxy resin, a curing agent and other auxiliaries. Multiple epoxy groups exist on each molecule of the cyclic organosilicone modified epoxy resin and are distributed symmetrically,and good hardness and barrier performance of the encapsulating material can be guaranteed; the cyclic organosilicone modified epoxy resin is low in curing shrinkage, and has better adhesive force onan electric device support when applied to an electric device; a main chain of the cyclic organosilicone modified epoxy resin is cyclic organosilicone, no unsaturated double bond exists on the main chain, and the resistance to yellowing of the cyclic organosilicone modified epoxy resin is good; the cyclic organosilicone modified epoxy resin is has better compatibility with epoxy monomers and can be cured by adopting multiple modes.

The invention relates to a high-barrier transparent flexible display material and a preparation method thereof. The preparation method comprises the following steps: firstly heating an anionic two-dimensional layered material and an organic intercalation agent in a solvent, then performing a stripping treatment in the solvent, mixing the material with a polymerization monomer of polyimide and performing in-situ polymerization, and finally performing heat treatment to obtain the flexible display substrate material. The material obtained by the preparation method of the present invention has high water-oxygen barrier property, excellent thermal stability, low thermal expansion coefficient, and high transparency and the like, and is the flexible material excellent in comprehensive performance.

The invention aims to provide an organic light-emitting device with a packaging layer structure. The packaging layer is composed of silicon oxycarbide barrier layers and inorganic barrier layers which are alternately stacked, wherein the silicon oxycarbide barrier layers are made of silicon oxycarbide, and the inorganic barrier layers are made of B2O3, Al2O3, Ga2O3, In2O3 or Tl2O3. The packaging layer can effectively prevent the erosion of external water, oxygen and other active substances to the organic light-emitting device and prolong the service life of the organic light-emitting device. The invention further provides a preparation method of the organic light-emitting device. The preparation method has the advantages of simple process, cheap raw materials and easy realization of large-area preparation.

The invention relates to a water-oxygen blocking film for a flexible film electronic device and a technology for adopting the water-oxygen blocking film as an electronic device package. The water-oxygen blocking film is a laminated film formed by staggered lamination of multiple blocking layers used for blocking water and oxygen molecules and multiple absorbing layers used for decoupling the structure and absorbing the water and oxygen molecules, and the blocking layers and the absorbing layers are all inorganic films; the composite film comprises a bottommost layer in contact with the device, a topmost layer in contact with the atmosphere and intermediate layers arranged between the bottommost layer and the topmost layer, both the bottommost layer and the topmost layer are the blocking layers, and any two adjacent layers forming the composite film are one blocking layer and one absorbing layer respectively. The blocking layers are at least one kind of SiO2 films, Si3N4 films, SiON films and Al2O3 films. The absorbing layers are metal oxide films or nitride films with amorphous structures. The water-oxygen blocking film is simple in structure and can obtain good water-oxygen blocking performance under the condition of thinness.

The invention provides an organic electroluminescent device with the structure of a packaging layer. The packaging layer comprises an organic barrier layer and an inorganic barrier layer which are alternatively stacked. The material of the organic barrier layer is one from copper phthalocyanine, N,N'-diphenyl-N,N'-di(1-naphthyl)-1,1'-biphenyl-4,4'-diamine, (8-hydroxyquinoline)aluminum, 4,4',4''-tris(N-3-methylphenyl-N-phenylamino)triphenylamine, and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline; and the material of the inorganic barrier layer is a mixture formed by mixing one from a titanium simple substance , a zirconium simple substance and a hafnium simple substance with one from zinc oxide, aluminum oxide and indium oxide according to a mass ratio of 1:9 to 3:7. According to the invention, the organic electroluminescent device can be effectively prevented from being corroded by active substances such as external water, oxygen and the like, and the service life of the organic electroluminescent device can be prolonged. The invention further provides a preparation method of an organic electroluminescent device. The preparation method is simple in process and low in raw material price, and can be easily prepared in a large area.

The invention relates to a quantum dot material and a preparation method thereof, a quantum dot film, a backlight module and display equipment, which belong to the technical field of liquid crystal display. The preparation method of the quantum dot material comprises the following steps of carrying out oxide coating on quantum dots by adopting a reversed-phase microemulsion method to obtain quantum dot/oxide particles, and carrying out polymer wrapping on the quantum dot/oxide particles by adopting a dispersion polymerization method to obtain the quantum dot material. The quantum dots are coated with oxides and polymers by adopting a reversed-phase microemulsion method and a dispersion polymerization method, and the surfaces of the quantum dots can be tightly coated with the oxides by adopting the reversed-phase microemulsion method, so that the quantum dot/oxide particles are good in morphology structure and particle size uniformity and good in water and oxygen barrier property. And on the basis, the polymer is coated, so that the polymer has good coating property, the scattering effect intensity of light is uniformly distributed, and the obtained quantum dot/oxide/polymer particles have better water and oxygen barrier property.

The invention provides a flexible display substrate material and a preparation method thereof. The preparation method of the flexible display substrate material provided by the invention comprises thefollowing steps: a) carrying out a polymerization reaction on aromatic dianhydride, aromatic amine and inorganic nanoparticles in a solvent so as to obtain a reaction solution; b) carrying out an endcapping reaction on the reaction solution and amino siloxane so as to obtain polyamide acid slurry; c) performing heat treatment on the polyamide acid slurry, thereby obtaining the flexible display substrate material. The preparation method provided by the invention can achieve the effects of obviously improving the toughness of the material, improving the heat resistance, reducing the thermal expansion coefficient and producing excellent water oxygen barrier property, and the flexible display substrate material with excellent comprehensive performance can be obtained.

The invention provides a high-barrier-performance transparent and flexible display base plate material and a preparation method thereof. The preparation method provided by the invention is characterized in that firstly, a cationic two-dimensional layered material and an organic intercalation agent are subjected to heating reaction in a solvent; then, peeling treatment is performed in the solvent;next, the mixture is mixed with polyimide polymerization monomers, and is subjected to in situ polymerization reaction; finally, heat treatment is performed; the flexible display base plate material is obtained. The material prepared by the preparation method provided by the invention has high water oxygen barrier performance, excellent heat stability, low heat expansion coefficient, high transparency and the like, and belongs to a flexible material with excellent comprehensive performance.