51results about How to "Improve brightness effect" patented technology

A brightness enhancement film includes a substrate, a plurality of curved prism units and a plurality of light scattering particles. The curved prism units are extended in parallel and formed on a first surface of the substrate. Each of the curved prism units includes at least one meandering surface to provide with changes in curvature. Thus, the meandering surface of the curved prism unit is able to refract incident light in two dimensions with respect to the substrate that may enhance entire light-collecting efficiency in two dimensions. The light scattering particles are disposed in the curved prism units.

A flat panel display is provided. The flat panel includes at least one light emitting device having a light emitting semiconductor device and a lens. The lens includes two reflective surfaces which are disposed at both sides with respect to a central axis of the lens. Refractive surfaces connect with the respective reflective surfaces and have a tilt included angle with respect to the central axis. Each of the refractive surfaces continuously extends from the reflective surface along a direction toward the central axis. A Fresnel surface is configured between the refractive surfaces. Light rays emitted from the light emitting semiconductor device reach the lens. A portion of the light rays reaching each of the reflective surfaces is reflected to at least one of the refractive surfaces and the Fresnel surface. The reflected light rays are refracted and collected with a convergent angle.

The invention discloses a method and device for laser-welding foil and a lug. The method comprises the following steps of taking at least one layer of the foil as a laser absorbing surface to put in front of the lug; adsorbing or pressing the foil and the lug together; arranging a laser focus on the lug; and welding the foil and the lug. The method adopts non-contact type laser welding to replaceconventional ultrasonic contact type welding, so that the foil and the lug are not affected by external force, and processing is stable. Laser processing efficiency is high, and multi-pulse light spots of laser can be adopted for process.

A nitride based 3-5 group compound semiconductor light emitting device comprising: a substrate; a buffer layer formed above the substrate; a first In-doped GaN layer formed above the buffer layer; an InxGa1−xN / InyGa1−yN super lattice structure layer formed above the first In-doped GaN layer; a first electrode contact layer formed above the InxGa1−xN / InyGa1−yN super lattice structure layer; an active layer formed above the first electrode contact layer and functioning to emit light; a second In-doped GaN layer; a GaN layer formed above the second In-doped GaN layer; and a second electrode contact layer formed above the GaN layer. The present invention can reduce crystal defects of the nitride based 3-5 group compound semiconductor light emitting device and improve the crystallinity of a GaN GaN based single crystal layer in order to improve the performance of the light emitting device and ensure the reliability thereof.

A light emitting device manufacturing method including the steps of corrugatedly scanning a laser beam along a plurality of division lines formed on a light emitting device wafer having a sapphire substrate layer and a light emitting layer to apply the laser beam to the sapphire substrate layer, thereby performing laser processing for the sapphire substrate layer and next applying an external force to a processed locus formed along each division line by the above laser processing to thereby divide the light emitting device wafer into a plurality of light emitting devices. The sapphire layer of each light emitting device has side surfaces whose horizontal sectional shape is a corrugated shape. Accordingly, the number of total reflections on the side surfaces of the sapphire layer can be reduced to thereby achieve efficient emergence of light from the sapphire layer.

An LED including housing, lead frame in the housing, light-emitting chip, and packed colloid; pit accommodation portion being disposed in the housing to expose lead frame, and multiple reflective sidewalls at various inclinations being disposed on a side of accommodation portion; the chip being disposed on a lead frame; streams of light form the chip traveling in different directions when reflected by those sidewalls; and most of those streams of light being emitted out of the accommodation portion to promote luminance performance of the LED.

Disclosed herein is a low-reflectivity, brightness-enhancing multilayer optical film for enhancing the brightness of an organic light emission diode (OLED) display and imparting anti-reflection performance to the display. The multilayer optical film comprises a transparent substrate, a light diffusion layer formed on the transparent substrate by wet coating and a light-absorbing layer formed on the light diffusion layer by wet coating wherein the substrate has a thickness of 10~300 mum, the light diffusion layer contains a resin and spherical particles, and the light-absorbing layer contains 50~500 parts by weight of core-shell structured light-absorbing particles composed of a light-absorbing agent as a material for the core and a transparent resin as a material for the shell. Further disclosed is an organic light emitting diode (OLED) display using the multilayer optical film.

An exemplary stereo display apparatus includes a pixel array and a lens array. The pixel array includes a plurality of pixel units arrayed in parallel rows and parallel columns. The lens array covers the pixel array, and includes a plurality of lenticular lens units arrayed in said rows and columns. The lenticular lens units are parallel to each other, and the adjacent lenticular lens units arrayed in columns have a stagger arrangement along a first direction along which the pixel units are arrayed in rows, thereby the adjacent lenticular lens units arrayed in columns are arranged in terraced steps.

The invention discloses a skin-whitening and moisture-preserving skin care product for eyes and a preparation method for the skin-whitening and moisture-preserving skin-care product. The skin-whitening and moisture-preserving skin-care product contains the following ingredients in part by weight: 30 to 60 parts of alpha-mannosan, 0.01 to 0.5 part of tuckahoe sclerotium extract, 0.1 to 5 parts of angelica polysaccharide, 0.1 to 5 parts of angelica total organic acid, 0.1 to 6 parts of largehead atractylodes rhizome root extract and 40 to 75 parts of inocular mixture. After being used, the skin-whitening and moisture-preserving skin-care product has obvious skin-whitening and moisture-preserving effects, and has high capacity of inhibiting melanin and increasing the brightness of skin.

The invention discloses an anti-dandruff shampoo composition, which comprises the following components in percentage by weight: 5.0 to 50.0 percent of surfactant, 0.01 to 10.00 percent of unsaturated fatty alcohol (acid) ester, 0.1 to 5.0 percent of anti-dandruff agent, and the balance of carrier containing water, wherein the anti-dandruff agent is a composition of a non-hydrophilic particle anti-dandruff agent and a hexamidine derivative. The anti-dandruff shampoo composition uses the unsaturated fatty alcohol ester which has good compatibility with both scalp sebum and the non-hydrophilic particle anti-dandruff agent so that the active components of the non-hydrophilic anti-dandruff agent pass through the scalp sebum preferentially to directly act on oleophilic microorganisms in the scalp, and simultaneously the active components are combined with the hexamidine derivative to control the microorganisms from a water phase path, so the anti-dandruff shampoo composition achieves the same anti-dandruff effect with a low addition of the anti-dandruff agent, reduces the environmental pollution, and has an obvious effect of improving the hairline brightness of hair.

Improved brightness and feedback multi-emitter laser diode modules and methods are provided. A plurality of laser diode emitters emit broad-area light beams in a beam direction. In cross-section, each beam is broad in its slow axis and narrow in its fast axis. Groups of downstream optical components collimate, shape, stack and direct the beams along a light path towards a beam spot (which may be fiber-coupled). After collimating, stacking and directing, the beams are Fourier transformed in the fast-axis through a lens feature having a fast-axis focal length less than about 3 millimeters. In some embodiments, the fast-axis focal length is between about 0.1 and 2.0 millimeters. Astigmatism may be introduced between the fast axis and the slow axis in the beams upstream of the lens feature and in accordance with the fast axis focal length of the lens feature. The emitters may receive feedback including wavelength locking feedback.

The invention discloses a light guide plate applied to an illuminated keyboard. A plurality of keyswitch modules is installed on the illuminated keyboard. The light guide plate is disposed beneath the keyswitch modules. The light guide plate comprises a main body and a reflective portion printed on a bottom of the main body. A light source is disposed close to the main body of the light guide plate. If the light source emits white light, the color of the reflective portion is different from that of the light source. If the light source emits non-white light, the color of the reflective portion is the same as that of the light source. Accordingly, the luminance will be greatly enhanced.

The invention discloses a weeding and tilling depth adjusting method, device and system, computer equipment and a storage medium, and the method comprises the steps: obtaining a rice seedling crop rowimage according to a time interval calculated according to the driving speed of an intertillage weeding machine; completing semantic segmentation of rice seedling pixels and inter-row weed pixels onthe rice seedling crop row image, and defining rice seedling crop rows according to the rice seedling pixels; grading the weed density according to the pixel values of the weeds in the rice seedling crop rows, and recording the position information of the weeds on the rice seedling crop row images; and controlling a tilling depth adjusting mechanism of the intertillage weeding machine to adjust the weeding tilling depth of the weeding part corresponding to the weed density grade according to the weed density grade and the position information. According to the invention, real-time identification of the density and position of weeds between rice seedling rows can be realized, corresponding weeding tilling depth adjustment is further realized, the impurity removal rate of the intertillage weeding machine is improved, and a foundation is laid for research and development design of the intelligent intertillage weeding machine between rice seedling rows.

An LED including housing, lead frame in the housing, light-emitting chip, and packed colloid; pit accommodation portion being disposed in the housing to expose lead frame, and multiple reflective sidewalls at various inclinations being disposed on a side of accommodation portion; the chip being disposed on a lead frame; streams of light form the chip traveling in different directions when reflected by those sidewalls; and most of those streams of light being emitted out of the accommodation portion to promote luminance performance of the LED.

The present invention discloses a multiple-wavelength light emitting diode that includes a fluorescent layer with a predetermined wavelength disposed at the bottom of the light emitting diode, such that a light emitting chip can be fixed onto a carrier and connected in parallel with the circuit of the light emitting chip by a gold wire. The light emitting chip is packaged by a package material to constitute a light emitting diode capable of combining the light source of the light emitting chip with the wavelength of the fluorescent layer, so as to produces the desired light color.

In a radiant pad, a backlight assembly and a display device, the backlight assembly has a light source, a receiving container and a heat absorbing member. The receiving container receives the light source and the heat absorbing member to absorb radiant heat emitted by the light source. The backlight assembly further includes a discharge member disposed at an exterior surface of the receiving container to discharge heat from the light source transmitted through the receiving container. Accordingly, a temperature of the backlight assembly is lowered and a temperature difference between left and right areas of the backlight assembly is also reduced, thereby improving brightness properties.

A white multi-wavelength LED and its manufacturing process has bonded at the bottom of a light emitting chip in a given color a first non-conductive material containing phosphor in a corresponding color to that of the chip to become a die unit; the first non-conductive material functioning as the position where the die unit is bonded to a carrier; golden plated wire constituting the circuit connection of the chip; a second non-conductive material containing phosphor in a color corresponding to that of the chip being injected to cover up the top of the chip to emit the expected white light and effectively promote the luminance performance of the LED.

The invention discloses a method for revealing and extracting a scene potential fingerprint. The method is characterized by comprising the following steps of: 1, irradiating a short-wave ultraviolet laser light which has a wavelength of 266 nm and is output by a neodymium doped yttrium aluminium garnet (ND-YAG) ultraviolet laser serving as a light source to a detection material on which the potential fingerprint is reserved; 2, filtering environmental parasitic lights by using a band-pass glass filter with the central wavelength of 266 nm, and transmitting a laser image of 266 nm reflected onthe detection material to an ultraviolet camera; and 3, receiving and recording the laser image with the wavelength of 266 nm transmitted by the band-pass glass filter by the ultraviolet camera. The invention also discloses a device for revealing and extracting the scene potential fingerprint. The invention can solve the problems of difficult revealing and extraction of invisible or indistinguishable traces and physical evidences in a criminal case scene, is particularly applicable to the revealing and extraction of the potential fingerprint on a surface of a smooth non-permeable detection material such as glass and smooth paper, and has the advantages of low background interference, high contrast and high revealing rate.