347results about How to "High light reflectivity" patented technology

An encapsulant material with enhanced light reflectivity, a crystalline silicon photovoltaic module and a thin film photovoltaic module are provided. The encapsulant material has a porous structure therein, and an average pore diameter of the porous structure is between several hundreds of nanometers and several hundreds of micrometers, so that the light reflectance of the encapsulant material is improved. Moreover, the encapsulant material is crosslinked by a physical or chemical crosslinking method, so heat resistance thereof is improved. Therefore, the encapsulant material is suitable for the crystalline silicon photovoltaic module and the thin film photovoltaic module, so as to increase power conversion efficiency of these modules.

A diffuse reflective article is provided including a diffuse reflector of light positioned within a structure defining an optical cavity. The diffuse reflector is a nonwoven sheet containing a plurality of inter-fiber and intra-fiber pores of optimal light scattering dimension. Also provided is an optical display, including: (i) a structure defining an optical cavity; (ii) a light source positioned within the optical cavity; (iii) a display panel through which light from the light source passes; and (iv) a diffuse reflector positioned within the optical cavity for reflecting light from the light source toward the display panel, wherein the diffuse reflector is a nonwoven sheet containing a plurality of inter-fiber and intra-fiber pores of optimal light scattering dimension.

A backlight unit which includes a structure in which the sensitivity of a light sensor for detecting color reproducibility of white light is increased, and a liquid crystal display (“LCD”) device having the same. The backlight unit includes a light source which generates light, a light guide plate which guides the light incident from the light source, a light sensor which detects the light emitted from the light guide plate and a mold frame which receives the light source, the light guide plate, and the light sensor. The mold frame includes a receiving recess which receives the light sensor, and a light sensing structure formed on a sidewall thereof being in contact with a side of the light guide plate which reflects the light emitted from the light guide plate and provides the light emitted from the light guide plate to the light sensor.

Provided is a lighting device, comprising: a light source module comprising: at least one light source disposed on a printed circuit board; and a resin layer disposed on the printed circuit board so that the light source is embedded; a light reflection member formed on at least any one of one side surface and another side surface of the resin layer; and a diffusion plate having an upper surface formed on the light source module, and a side wall which is integrally formed with the upper surface and formed to extend in a lower side direction and which is adhered onto the light reflection member, wherein a first separated space is formed between the light source module and the upper surface of the diffusion plate, whereby flexibility of the product itself can be secured, and durability and reliability of the product can be also improved.

Disclosed herein is a resin composition including 100 parts by weight of an organic resin and 50 to 1,000 parts by weight of an inorganic filler, wherein 10 to 100% of the inorganic filler is composed of an oxide of a rare earth element.

A solid state light source with LEDs in thermal contact to thermally conductive translucent elements where light emitted from the LEDs is directed to emerge from the heat dissipating surfaces of the elements. The thermally conductive translucent elements are arranged or combined with a reflector to form a light recycling cavity. The outside surfaces of the thermally conductive translucent elements forming the cavity become luminescent as the light emitted by the LEDs on the inside of the cavity is continually reflected and recycled until a very high percentage of the light emitted by the LEDs is eventually transmitted through and emitted uniformly and omnidirectionally. Simultaneously, the heat from the LEDs conducts through and to the luminescent outside surfaces of the elements of the cavity, which radiatively and convectively cool the light source thereby eliminating the need for bulky appended heat sinks.

Provided is a lighting device comprising: a plurality of LED light sources formed on a printed circuit board; and a reflective unit stacked on the printed circuit board in a structure in which the LED light sources penetrate, wherein the reflective unit comprises a first reflective film and a second reflective film disposed to oppose to each other, and a first adhesive pattern layer which bonds the first and second reflective films, and in which a plurality of unit air cells having a first air area formed in an inner part thereof are closely disposed to communicate with each other.

According to the present invention, it is advantageous that the improvement of luminance as well as the improvement of light reflectance can be maximized by providing the reflective unit having an air area to a surface of the printed circuit board.

It is an object of the present invention to inhibit exposure of Ag in Ag-employing reflective electrodes caused by microdefects generated during the manufacturing process, and to prevent reduction in light emission output and deterioration in current-voltage characteristics resulting from shorting of the light emitting device. The semiconductor light emitting device comprises an n-type semiconductor layer, a light emitting layer and a p-type semiconductor layer in that order on a substrate, with a negative electrode and positive electrode each formed in contact with the n-type semiconductor layer and p-type semiconductor layer, respectively. The positive electrode comprises at least a contact metal layer composed of at least one type of metal selected from the group consisting of Pt, Ir, Rh, Pd, Ru and Re or their alloy in contact with the p-type semiconductor layer, a reflective layer composed of a metal or alloy containing Ag as the main component on the contact layer, and one or more protective metal layers containing no Ag, covering the top and side surfaces of the reflective layer.

A flame-retardant polycarbonate resin composition which comprises 100 parts by weight of a polycarbonate resin (A), 0.01 to 3 parts by weight of a silicone compound (B) having a branched main chain and having either an aromatic group or an aromatic group and a hydrocarbon group (excluding aromatic groups), 0.5 to 20 parts by weight of a phosphazene compound (C), 0.01 to 2 parts by weight of an organic metal salt (D), and 0.01 to 2 parts by weight of a fiber-forming fluoropolymer (E). It may optionally contain 5 to 25 parts by weight of titanium oxide (F) and 0.05 to 2 parts by weight of polyorganohydrogensiloxane (G).

An organic electroluminescence type display apparatus of top emission type, in which a thin film transistor (TFT), a flattening film made of organic resin and an organic EL element, in which at least an anode, an electroluminescence layer and a cathode are laminated on the flattening film in this order, are formed in each picture element in a display region on a substrate. The anode is composed of at least two layer film including an aluminum (Al) alloy film containing as a impurity at least one of transition metals of the eighth group of 3d into Al and including a light transmitting conductive oxide film laminated on the Al alloy film.

Disclosed is a lighting device which comprises: an optical member comprising a protruding optical pattern forming a gap with an adjacent layer; at least one light emitting unit inserted into the optical member; and a resin layer formed on the optical member and the at least one light emitting unit, whereby it is possible to obtain an effect that the shapes of light change depending on the viewing angle when viewing the light source by producing various protruding optical patterns, an effect that the whole thickness can be reduced, and an effect that the degree of design freedom can be enhanced when designing products thanks to an enhanced flexibility.

The invention discloses a polycarbonate filled composite material. The polycarbonate filled composite material is characterized in that: the polycarbonate filled composite material comprises the following components, by weight, 30-90% of a polycarbonate, 5-50% of titanium dioxide, 0.0001-5% of a fluorescent whitening agent, 0.001-15% of a high wavelength region brightening agent, and 0-50% of other fillers and assistants, wherein the high wavelength region brightening agent is a compound containing heteroatoms. The polycarbonate filled composite material has the following beneficial effects: the polycarbonate filled composite material which possesses excellent light reflection performances in a full waveband through adjusting proportions of the components can be adapted to different types of light sources, especially a reflector panel in an LED backlight module and a reflector lampshade of an LED lamp holder, as a reflection material; and the polycarbonate filled composite material has the advantages of consumption saving and convenient making, is well received and is recommended because of the convenient processing technology and molding when the polycarbonate filled composite material is applied to the light reflection material.

The invention relates to a high-reflective acrylic polyurethane coating composition which comprises a component A and a component B in a mass part ratio of 20;3. The component A in 100 parts by mass comprises the following materials in part by mass: 30-50 parts of modified hydroxyl acrylic resin, 2-6 parts of auxiliaries, 35-45 parts of heat reflective pigments, 4-8 parts of aerogel and 10-15 parts of organic solvent. The component B in 100 parts by mass comprises the following materials in part by mass: 75-90 parts of polyisocyanate and 10-25 parts of organic solvent. The modified hydroxyl acrylic resin is obtained by cold-blending modified resin and hydroxyl acrylic resin in a mass part ratio of 1-3: 1; the solid content of the modified hydroxyl acrylic resin is greater than or equals to 75wt%; the particle size of heat reflective pigments ranges from 0.55 micron to 1.2 microns; the particle size of the aerogel ranges from 1 micron to 80 microns; the pore size of the aerogel ranges from 10 nanometers to 20 nanometers; and the heat conductivity coefficient of the aerogel is less than or equals to 0.015W/(m k). The polyisocyanate is one or more of HDI (hexamethylene diisocyanate) biuret, HDI trimer and IPDI (isophorone diisocyanate) trimer curing agents. The high-reflective acrylic polyurethane coating composition is high in reflective insulation quality; and the quantity of VOC (volatile organic compounds) of the high-reflective acrylic polyurethane coating component is low.

The invention discloses a multilayered co-extruded bidirectional-stretching light reflection polyester thin film and a manufacturing method thereof. The thin film is characterized by being composed of layers A and layers B and has a three-layered or five-layered structure; the sum of the thicknesses of the layers A is 10%-20% of the total thickness of the thin film; each layer A is composed of following materials in percentage by weight: 62.5%-79.88% of polyethylene glycol terephthalate slices, 20%-35% of inorganic particles, 0.05%-1% of a heat stabilizing agent, 0.05%-1% of a light stabilizing agent and 0.02%-0.5% of a fluorescent whitening agent; each layer B is composed of following materials in percentage by weight: 68%-80% of the polyethylene glycol terephthalate slices, 19.9%-30% of functional resin, 0.05%-1% of a heat stabilizing agent and 0.05%-1% of a light stabilizing agent. The thin film disclosed by the invention has the high reflectance and the ageing-resistant performance and can be applied to fields of parts of liquid crystal panels or planar light sources, illumination tools, illumination advertising boards and the like.

Flaky particles suitable for a filler having high durability and high weatherability which absorbs reduced amount of visible light and effectively scatters visible light are provided. By using the flaky particles to be contained, a cosmetic or the like capable of giving good usability such as spreading well on the skin, exhibiting bright and clear appearance for long period is provided. The flaky particles comprise mother particles of metallic oxide of low refractive index and microparticles of metallic oxide of high refractive index having a mean particle size of 160-450 nm dispersed inside the mother particles in an amount of 5-50% by weight, wherein the flaky particles have a light diffusion degree of 80 or more. The flaky particles preferably have a mean particle size of 5-500 μm, a mean thickness of 0.1-5 μm, and a mean aspect ratio of 5-300.

The invention provides a wavelength conversion device and a light emitting device. The wavelength conversion device comprises a substrate with a through hole, wherein a light incoming opening and a light outgoing opening are respectively formed in two ends of the through hole. The wavelength conversion device also comprises a wavelength conversion material which is arranged in the through hole and is in close contact with the inner wall of the through hole; the wavelength conversion material is used for receiving exciting light which is incoming into the through hole and emitting excited light; and the inner wall of the through hole has a reflectivity for the exciting light and the excited light. The wavelength conversion device also comprises a first light splitting device which is arranged at one side of the light incoming opening of the through hole and covers the light incoming opening, wherein the first light splitting device is capable of transmitting the exciting light and reflecting the excited light. The wavelength conversion material is arranged in the through hole of the substrate and is in good contact with the inner wall of the substrate, so that the radiating effect is excellent; and meanwhile, the through hole of the substrate forms a light collector, and the collected light can be outgoing only through the light outgoing opening of the through hole, so that a high-brightness light source with a small optical extend is obtained.

The present invention provides a PET release film, wherein the thin film layer comprises, by weight, 100 parts of PET, 8-12 parts of PP, 15-20 parts of barium sulfate, 15-20 parts of titanium dioxide, 3-5 parts of 3-aminopropyltriethoxysilane, 10-16 parts of butyl acrylate, 15-20 parts of methyl methacrylate, 1-2 parts of octadecyl methylacrylate, 10-20 parts of polyethylene glycol, 10-20 parts of ethanol, 20-30 parts of deionized water, 5-10 parts of natural latex, 0.3-0.5 part of a defoamer, and 0.3-0.5 part of a thickener. According to the release film, the thin film layer is added with the barium sulfate and the titanium dioxide inorganic filler, such that the prepared release film has characteristics of excellent adhesion (peel strength), excellent mechanical property, good light-reflecting property, and wide application range.