400results about How to "Improve the scattering effect" patented technology

The present invention provides a nitride-based semiconductor light emitting device basically comprising a first conductivity type nitride semiconductor layer, active layer and second conductivity type nitride semiconductor layer, which are sequentially formed on a light-permeable substrate in this order. The light emitting device further comprises an insulating light-scattering layer formed on at least one surface thereof. The insulating light-scattering layer is made of an insulating material having a light permeability of more than 50% and is formed at an outer surface thereof with a roughened pattern for the scattering of light.

A light-emitting device (10) includes: a light-emitting element (1); and a light flux controlling member (2) for controlling light emitted from the light-emitting element (1), the light flux controlling member (2) has (i) a light-incoming surface (2a) which the light emitted from the light-emitting element (1) enters and (ii) a light-outgoing surface (2b), and the following equation (1) is satisfied where r is a length, from a light axis Z of the light-emitting device (10), of a plane that is provided at a certain distance from the light flux controlling member (2) in a direction parallel to the light axis Z so as to be perpendicular to the light axis Z, φ₁ is an angle between the light emitted from the light-emitting element (1) and the light axis, P(φ₁) is a light distribution property of the light-emitting element (1). This provides a light-emitting device that scatters light without generating uneven brightness on a liquid crystal display panel, reduces a reflectance caused by the Fresnel's reflection, and has an improved scattering ability.

A surface light source unit (2) includes a light source (21), a light guide plate (22), a reflective plate (23) and a diffusing plate (24). The light guide plate includes a light incidence surface (221) adjacent to the light source for receiving light beams, an emission surface (222) for emitting the light beams, a light reflection surface (223) opposite to the emission surface and a plurality of diffusion dots (224) formed on the light reflection surface. The diffusion dots contain a plurality of light scattering particles (225) having substantially global surfaces. The surface light source unit provides high uniform illumination for a liquid crystal display panel.

A reflex-type screen for reflecting a light projected obliquely from a projector to a front of the reflex-type screen, including a base material made of material which absorbs light, a white resin layer which is formed on a projector side inclined plane on the base material and reflects light and a transparent diffusing layer which includes transparent binder resin and diffusing agent, and is formed to cover the white resin layer, and the base material includes the projector side inclined plane that is provided at an angle so that light from the projection enters the projector side inclined plane and a non-projector side inclined plane that is provided at an angle so that the light from the projection does not enter the non-projector side inclined plane, and the projector side inclined plane and the non-projector side inclined plane are located alternatively, so that the base material is formed to be saw-toothed shape. The white resin layer reflects the light from the projector to the front of the reflex-type screen, and the non-projector side inclined plane absorbs almost of incident light, and the transparent diffusing layer diffuses light which is reflected by the white resin layer.

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.

PCT No. PCT/JP96/03303 Sec. 371 Date Jul. 9, 1997 Sec. 102(e) Date Jul. 9, 1997 PCT Filed Nov. 11, 1996 PCT Pub. No. WO97/17630 PCT Pub. Date May 15, 1997A polymer dispersed liquid crystal electro-optical device comprising a liquid crystal polymer complex layer having a liquid crystal and a polymer, wherein said liquid crystal and said polymer are aligned in the same direction when no electric field is applied, and an electrode structure formed on each side of said liquid crystal polymer complex layer for applying an electric field to said liquid crystal polymer complex layer to align said liquid crystal along the electric field so as to render said liquid crystal polymer complex layer in a light-scattering state. The liquid crystal polymer complex layer is formed by dissolving a liquid crystal and a polymer precursor to form a solution; adding a compound in which at least one hydrogen atom in a benzene ring is substituted by a hydroxy group or a compound having a benzene ring with a hydroxy group as a basic skeleton to said solution; polymerizing said polymer precursor to from a polymer; and phase separating said liquid crystal and said polymer to form a liquid crystal polymer complex layer. The compound improves the initial refractive index, and the refractive index and contrast after energize-aging.

A detector assembly for detecting the presence of analyte molecules, in particular, proteins, uses both Surface Enhanced Raman Scattering (SERS) and Surface Plasmon Resonance (SPR) in synergy. The excitation laser used for SERS provides scattering from a reporter dye to which an analyte molecule is attached in the vicinity of a conducting surface. Simultaneously, a second laser is provided at the critical angle to the conducting surface. The second laser causes a field to be created in the region of the analyte which enhances the Raman scattering effect.

A light emitting diode, capable of accomplishing enlargement of emitted range of light and equalization of brightness of emitted light has a substrate (22), electrodes (23a, 23b), a light emitting element (24) mounted on the substrate (22) and connected electrically with the electrodes (23a, 23b), a resinous cover (26) for sealing the light emitting element (24) and electrodes (23a, 23b) and an uneven shaped light scattering part (30) provided on the surface of the cover.

The embodiment of the invention relates to the technical field of electroluminescence, and provides an organic electroluminescence device which aims to improve luminous efficiency of the organic electroluminescence device. The organic electroluminescence device comprises a pixel definition layer and a luminescence structure, and nano metal particles are mixed in the pixel definition layer. The manufacturing method can be applied to manufacture processes of the organic electroluminescence device.

The invention discloses a smectic-state liquid crystal display. The smectic-state liquid crystal display comprises a display layer, wherein the display layer comprises a first base layer and a second base layer; a mixing layer is arranged between the first base layer and the second base layer; the side of the first base layer facing the mixing layer is provided with a first conductive electrode layer; the side of the second base layer facing the mixing layer is provided with a second conductive electrode layer; the back surface of the display layer is provided with a back panel layer; an intensifying layer is arranged between the display layer and the back panel layer and comprises a substrate; and the surface of the substrate facing the display layer and/or the back panel layer is provided with an intensifying member. The display has the advantages of high contrast, good display effect and strong reading and watching comfort.

The invention discloses a high-power GaN-based vertical structure LED with a light extraction microstructure and a preparation method thereof. According to the invention, the LED prepared through the preparation method is provided with a light-emitting surface microstructure transferred through a laser-stripping sapphire pattern substrate and complemented with patterns positioned on the surface of the laser-stripping sapphire pattern substrate; a means which has great high repetitiveness and controls the light-emitting surface microstructure is provided because the morphology of the light-emitting surface microstructure of the laser-stripping sapphire pattern substrate can be controlled through a process means; besides, nanometer-level coarsing is additionally carried out on the local area of a light-emitting surface, therefore the morphology of the light-emitting surface is further optimized; a mirror surface metallic reflection layer is changed into a nanometer-level rough grain metallic diffuse reflection layer during the LED preparation of the traditional process, so that the diffuse reflection and scattering effect is enhanced, the collocation of the reflection layer and the light-emitting surface microstructure is optimized, and the extraction efficiency of light inside the LED is furthest increased. The preparation method disclosed by the invention is simple in process and high in repeatability and can be used for large-scale industrial production.

Provided is a back reflection electrode with a periodic structure. The back reflection electrode with the periodic structure comprises a substrate layer, first layer metal film which plays a role of a template, and second layer metal film which plays a role in decoration, wherein the two layers of metal film are metal Ag film or metal Al film or metal Mo film, and the back reflection electrode with the periodic structure is formed and has the function of broadband-spectrum scattering. A manufacturing method of the back reflection electrode with the periodic structure comprises the steps that PS microspheres are assembled through the water bath method, plasma etching is carried out on the PS microspheres through O2, the template effect of the etched polystyrene microspheres is used for obtaining the back reflection electrode with the periodic structure and the function of broadband-spectrum scattering, and the back reflection electrode with the periodic structure serves as a back reflection electrode of a thin film solar cell. The back reflection electrode with the periodic structure and the manufacturing method of the back reflection electrode with the periodic structure have the advantages that due to the fact that the template effect of the polystyrene microspheres and the mode that magnetron sputtering or evaporation is carried out on the metal film are used, manufacturing of the high-scattering back reflection electrode with the periodic structure is achieved, and when the back reflection electrode with the periodic structure is applied to the thin film solar cell, the short-circuit current density and conversion efficiency of the thin film solar cell are improved.

The invention provides a method for distinguishing variety of fritillaria and detecting total alkaloid content of the fritillaria by virtue of near infrared spectrum. The method provided by the invention comprises the following steps: (1) collecting a fritillaria sample; (2) measuring the near infrared diffuse reflection spectrogram of the fritillaria sample, preprocessing the 4000-5000cm<-1> wave band in the spectrogram, and performing cluster analysis on the pre-processed near infrared spectrogram to build a qualitative model; or preprocessing the 4000-7000cm<-1> wave band in the spectrogram, so as to obtain an absorbance, associating the absorbance with the alkaloid content of the sample measured by virtue of bromothymol blue colorimetry, and building a quantitative correction model for detecting alkaloid by one or more methods of a partial least squares method, a principal component regression method and a multiple linear regression method; (3) collecting the near infrared spectrogram of the sample to be measured, after the corresponding preprocessing is performed, distinguishing the variety of the fritillaria and detecting total alkaloid content of the fritillaria by utilizing the built qualitative model or quantitative correction model. The method provided by the invention has the characteristics of fast speed, no damage, environment friendliness and low cost.

Provided is textured transparent conductive thin film with a periodic structure. The textured transparent conductive thin film with the periodic structure comprises a glass substrate layer, first layer ZnO thin film which plays a role in a template, and second layer ZnO thin film which plays a role in modification, wherein a laminated structure is formed by the glass substrate layer, the first layer ZnO thin film and the second layer ZnO thin film in sequence, the thickness of the first layer ZnO thin film is 300-1500nm, the thickness of the second layer ZnO thin film is 400-1000nm, and the textured transparent conductive thin film which has the scattering effect and is of the periodic structure is formed. A preparation method of the textured transparent conductive thin film with the periodic structure comprises the steps of using the water bath method to assemble PS microspheres, using O2 to carry out plasma etching on the PS microspheres, and obtaining the light-trapping ZnO transparent conductive thin film with the periodic structure through the template effect of the PS microspheres. The textured transparent conductive thin film with the periodic structure and the preparation method of the textured transparent conductive thin film with the periodic structure have the advantages that the prepared ZnO transparent conductive thin film has the good light-trapping effect, can serve as a front electrode to be applied to a thin film solar cell, and have a good scattering effect within the range of the wavelength which can be used by cells with the size of 400-1100nm, the optical distance of incident light in silicon-based thin-film cells can be increased, and the use ratio of light can be improved.

A method for electrostatically scattering an abrasive grain includes applying at least one electro-conductive material to the abrasive grain. The electro-conductive material is in the form of at least one organic compound.

The invention relates to an LED energy-saving lamp tube with a glass lamp tube. The LED energy-saving lamp tube comprises the lamp tube, a lamp holder, an LED lamp strip, a lamp strip inserted strip and LED circuit boards, wherein the lamp tube is a circular glass lamp tube, the wall face above the pipe wall of the inner side of the glass lamp tube is in contact connection with the upper portion face of an aluminum profile inserted strip, a lamp strip inserted groove is formed in the lower bottom face of the aluminum profile inserted strip, the LED lamp strip is in inserted connection in the lamp strip inserted groove, the two ends, stretching out of the glass lamp tube, of the aluminum profile inserted strip are respectively in inserted connection with one LED circuit board, the upper wall face of the pipe wall of the inner side of one heat dissipation aluminum tube is in contact connection with the upper portion face of the aluminum profile inserted strip, and the outward side ends of the left sides and the right sides of the two heat dissipation aluminum tubes are in inserted connection with the lamp holder. According to the LED energy-saving lamp tube, the glass lamp tube is adopted, aging and deformation are not easily caused, the light-pervious effect is good and stable, the appearance is attractive, the installation is convenient, the scattering effect is good, and enough space inside the heat dissipation aluminum tubes is provided for containing LED circuit board components.

The invention discloses an anti-Strokes Raman fiber laser achieving multi-wavelength output and aims at providing a laser of which an output wavelength is adjustable and the output wavelength is smaller than a pump wavelength. The fiber laser is composed of a pulse light source, a continuous light source, a wavelength division multiplexer, a high raster, an optical fiber, a low raster and a filter. The central wavelength of the output light of the pulse light source is located at n stage Raman Strokes wavelength of the obtained light wavelength, the output light wavelength of the continuous light source is located at a first stage Raman Strokes wavelength of the output light wavelength of the pulse light source, a zero-dispersion wavelength of the optical fiber is located near the output light wavelength of the pulse light source, the central wavelength of the high raster and the central wavelength of the low raster are equal to the obtained laser wavelength, the input arm working wavelength of the wavelength division multiplexer is respectively equal to the central wavelength of the pulse light source and the central wavelength of the continuous light source, and the central wavelength of the filter is equal to the obtained light wavelength. The anti-Strokes Raman fiber laser is simple in structure, adjustable in the light wavelength and can output a laser shorter than the pump wavelength.

The invention discloses a preparation method for a high-refractivity scattering layer and a preparation method for an organic light-emitting diode (OLED) with high luminous efficiency. The preparation method for the high-refractivity scattering layer comprises the following steps of: S1, preparing grinding dispersion, wherein the grinding dispersion comprises 10 to 60 mass percent of high-refractivity scattering particle, a dispersing agent of which the mass is 1 to 60 percent based on the mass of the high-refractivity scattering particles, 0 to 5 mass percent of anti-settling agent, 0 to 60 mass percent of photoresist and 20 to 89.9 mass percent of organic solvent; S2, filter-pressing the grinding dispersion prepared by the step S1 by using filter paper with filtering hole apertures of 0.8 to 1.2 mu m to obtain a film preparation solution; and S3, photoetching and spinning the film preparation solution prepared by the step S2 to obtain the high-refractivity scattering layer. When the high-refractivity scattering layer is arranged between a substrate and an electrode of the OLED with the high luminous efficiency, the luminous efficiency of the OLED can be greatly improved.

The invention discloses a manufacturing process of a three-layer co-extrusion nano-modified BOPP matt film. The manufacturing process comprises the following steps: after mixing and drying raw materials of a coring layer, an upper surface layer and a lower surface layer, entering respective single screw extruders to carry out melt plastification, and then entering a die head through a filter and a metering pump; flowing out after converging a three-layer polymer melt at the position of the die head, quickly attaching to the surface of a quenching roller under the effect of an air knife attaching device, forming a solid sheet through quick cooling of the quenching roller and a water channel, then carrying out longitudinal and transverse stretching in sequence, and then instantly carrying out air cooling treatment; then subsequently carrying out online thickness measurement, boundary material cutting, static elimination, automatic rolling, aging treatment and slitting. The manufacturing process adopts a three-layer co-extrusion compounding technology, the BOPP matt film with high extinction property, good abrasion resistance and high rate of finished products is prepared by using an improved raw material formula.