114results about How to "Uniform color distribution" patented technology

In a displaying method for use in an image display, an original gray scale is divided into a higher gray scale and a lower gray scale. Further, the color subpixels are divided into two groups corresponding to the higher and lower gray scales, respectively. The gray scale to be expressed by each subpixel is calibrated by weighing the original higher or lower gray scale for the pixel and the adjacent pixels and summing up the results. The color shift problem due to different visual angles can therefore be solved.

The invention provides an ink-jet recording material and a preparation method thereof as well as a method for preparing an ink absorption layer coating liquid, and relates to an ink-jet material and a preparation method thereof as well as a method for preparing an ink absorption layer coating liquid, so that the problems of poor ink absorption effect, nonuniform color distribution of printed images, unclear printed images and higher preparation cost of the existing ink-jet recording material can be solved. The ink-jet recording material is prepared from the ink-jet layer coating liquid which is prepared from PVC (polyvinyl chloride) serving as a base material, a 20-30% polyacrylic acid emulsion serving as a primer, an inorganic nano-pigment with the thickness of 10-100nm, a dispersing agent, acetic acid, deionized water and an adhesive aqueous solution. The prepared ink-jet recording material prepared through PVC material corona treatment, PVC substrate glue coating, drying, ink absorption layer coating and drying has the advantages that that the printed image is clear, the ink droplet does not diffuse, and the color is distributed uniformly; and the ink-jet recording material has excellent performances of color definition, color saturation, glossiness and the like. The raw material cost and the manufacture cost are low, so the ink-jet recording material is advantageous to industrial production, popularization and application.

The invention discloses a scindapsus aureus cultivation medium and a preparation method thereof. The scindapsus aureus cultivation medium is prepared by mixing landscape plant waste compost and auxiliary materials according to a certain volume ratio. The landscape plant waste compost is prepared by cutting, crushing, urea and water addition, turning and fermentation. The scindapsus aureus cultivation medium improves physicochemical properties of the original medium, adopts raw materials which have wide sources, are convenient for acquisition and have low prices, utilizes a landscape plant waste compost part to replace non-renewable peat massively used in flower production, improves ornamental plant quality, reduces a production cost, is beneficial for landscape waste utilization and environmental protection, and has good environmental ecological, economic and social benefits.

One or more embodiments of the present invention provide apparatuses, methods and systems to form a thin LED backlight unit for a large-screen flat-panel display. The backlight unit is able to achieve improved color mixing within a shorter mixing distance than the conventional art, while maintaining desired brightness uniformity, thereby allowing for a shorter bezel of a display device. One or more embodiments of the present invention include one or more light guides, which, by operating together, provide thin backlight units. High system efficiency is provided by introducing a recycling enhancement component, and uniform color distribution is achieved by incorporating color shift compensation. Multiple light guides are arranged adjacent to one another can offer a progressive scan illumination feature.

The invention discloses a colorful TPU (thermoplastic polyurethane) foaming material, a preparation method and an application. The colorful TPU foaming material comprises colorful foaming particles or colorful foaming sheets, pigment concentration of the colorful foaming particles or the colorful foaming sheets is 0.01%-5% by weight, pigments inside and outside the colorful TPU foaming material have the same concentration, the hardness of the colorful TPU foaming material is HA 5-65, the density is 0.05-0.5 g/cm<3>, and the average cell size is smaller than 100 mu m. The colorful TPU foaming material has the characteristics of good inside and outside uniformity, absence of wrinkles on the surface and the like.

A liquid crystal display is described, which includes a backlight module and a liquid crystal display panel. The backlight module includes a light guide plate and a plurality of blue light-emitting diodes adjacent to the light guide plate. The liquid crystal display panel is disposed above the backlight module. The liquid crystal display panel includes a first transparent substrate, a first electrode, a liquid crystal layer, a phosphor powder layer, a color filter, a second electrode and a second transparent substrate stacked above the light guide plate in sequence. The phosphor powder layer includes a plurality of green phosphor powder regions and red phosphor powder regions. The color filter is adjacent to the phosphor powder layer. The color filter includes a plurality of green color filter regions and red color filter regions respectively and correspondingly located, on the green phosphor powder regions and the red phosphor powder regions.

A light emitting device has a substrate, an LED mounted on the substrate. A first transparent layer seals the LED, and a second transparent layer is provided around the first transparent layer. Particles of fluorescent material are included in the second transparent layer. A reflector layer is formed on outside walls except an upper side.

The invention discloses a salient information guided image irregular mosaic splicing method. The main objective of the invention is to solve the problems of large number of jagged structures at the boundary of a target and the lack of detailed information in the prior art. The implementation process of the method includes the following steps that: 1, a target image is inputted, and the salient region of the image is extracted; 2, the target image is segmented into grid images with different densities according to saliency levels; 3, the color mean value characteristics of the images of a splicing image set and the grid regions of the target image are extracted; 4, splicing images of which the color characteristics are most similar to the color characteristics of the grid regions are selected for the grid regions; and 5, the width and height information of the grid regions are extracted, and corresponding splicing images are shrunk and expanded according to the width and height information of the grid regions, and the splicing images are aligned with the grid regions and are trimmed, and the trimmed splicing images are filled in corresponding grids, and mosaic filling of the whole image is completed. With the method of the invention adopted, the ornamental value of a mosaic spliced image can be kept, and the detailed information of the target image can be enhanced. The method of the invention can be applied to image transmission, image security, image information hiding and advertisement design.

The invention relates to a method for preparing nano-pearl colored polyester fiber, which comprises the following steps that: (1) pearls are sheared and ground to obtain crude pearl powder, then the crude pearl powder is mixed with water, a water dispersion of the pearl powder with a grain diameter of between 50 and 100 nm is obtained through high-pressure crushing, a thermal stabilizer, an antioxidant and an emulsifying agent are added into the water dispersion of the pearl powder, and the drying treatment is performed; (2) the obtained product is mixed evenly with a compatilizer at normal temperature, then the mixture is added into polyester chips, and granulation is performed on the mixture by a double screw extruder; and (3) nano-pearl polyester chips, the polyester chips and color master batch are blended for spinning. The method can be finished on the prior spinning equipment, tows are even and have evenly distributed color and luster; fabric is smooth, and has the characteristic of soft luster; the method is widely applied in the fields of apparel, decoration and industry; and at the same time, the blended color master batch can be used for preparing fibers with various lusters, and the prepared fibers have good nutrition and health care effects on human bodies.

The invention relates to a method for preparing nano silicon dioxide modified polyester fibers, which comprises the steps of preparing a nano silicon dioxide modified polyester slices and spinning by a blending FDY (Fully Drawn Yarn) technology. The method disclosed by the invention can be completed on conventional spinning equipment. Tows have good evenness. Glossy distribution is uniform. A textile fabric is smooth and flat. The nano silicon dioxide modified polyester fibers have the characteristic of soft gloss, can be widely applied to the clothing field, the decoration field and the industry field.

In a method of manufacturing a light emitting device, a luminescent color conversion member made of a translucent material including phosphors is directly fixed to light emitting surface side of light emitting elements in a light emitting element group, and a stack of the light emitting element group and the luminescent color conversion member is divided into a plurality of chips. In each of the light emitting elements, a piece of the luminescent color conversion member is directly fixed to the light emitting surface of the light emitting element.

According to an aspect of the present invention, a lighting device (2) is provided. The lighting device (2) comprises a wavelength converting layer (21) having a curved shape and a light source (22) arranged to emit light towards the wavelength converting layer (21). The wavelength converting layer (21) intersects a plane extending through the light source (22) and being parallel with the optical axis of the light source (22), at a curve given, in a polar coordinate system centered at the light source (22), by the equation: R(φ)=k·I(φ)^1/2±D, wherein k is a constant, 0 is an angle with respect to said optical axis, /(φ) is a function defining a luminous intensity profile of the light source and D is a deviation ranging from zero to 20% of the maximum value of said curve, R_max. The present invention is advantageous in that the lighting device (2) has a more uniform color distribution of emitted light across the wavelength converting layer (21) and the risk of color gradients and artifacts is reduced.

The invention relates to a preparation method of nano silver oxide modified polyester fiber, which comprises a process of preparing nano silver oxide modified terelyene slices and a process of blending FDY for spinning. The method of the invention can be finished on the routine spinning equipment, the tow has the characteristics of dry and uniform strips, uniform color distribution, flat fabric, luster and softness, and can be widely used in the clothing field, the decoration field and the industry field.

The present invention provides a video smoke event intelligent detection method based on a bionic color sensing model. According to the method, a user selects a source video and uses a video smoke event intelligent detection method based on a bionic color sensing model to carry out smoke detection on the video, the alarming is carried out when smoke is detected and the frame of picture of the video is stored into a specified path, at the same time the specific time point of detecting the smoke is recorded in the video, and the recording information is stored in a text file format after the detection is completed. The method is different from a traditional sensor fire alarming method and is not limited by space height, thermal barrier, explosion, toxicity and other environmental conditions, the timely alarming can be carried out in a short time that the smoke appears in the video, and the method is suitable for multiple outdoor video scenes of forests, fields and the like.

The invention relates to a preparation method of a nanometer calcium carbonate modified polyester fiber. The preparation method comprises the preparation of a nanometer calcium carbonate modified polyester chip and a process of spinning with a blended FDY (fully drawn yarn) technology. The method of the invention which can be completed with routine spinning equipment allows uniform yarn evenness, uniform color distribution, and smoothness of the fabric to be realized and has the characteristic of soft luster, so the method can be widely applied to the clothing field, the decoration field and the industrial field.

The invention discloses a color-changable architectural decorative diatomite dry powder coating and a preparation method thereof. The diatomite dry powder coating is prepared by the following steps: a, mixing crystal violet lactone, bisphenol A, with higher fatty alcohol to obtain a complex color developing agent; b, adding an emulsifier into the complex color developing agent, homogenizing, and shearing, to obtain a complex emulsion; c, adding the precursor liquid of hydroxypropyl-beta-cyclodextrin capsule and a dispersing agent into the complex emulsion to prepare a transparent microcapsulewrapped with the color developing agent; and d, uniformly mixing the transparent microcapsule with diatomite, inorganic fillers, rubber powders and auxiliary agents, to prepare color-changable architectural decorative diatomite dry powder coating. The method has the following advantages: through adopting hydroxypropyl-beta-cyclodextrin to wrap the complex color developing agent to prepare the transparent microcapsule, the coating formed by construction is uniform in color distribution. The transparent microcapsule is used to wrap and protect the developing agent, without affecting color development, and the color-changable architectural decorative diatomite dry powder coating effectively prolongs the service life of the color developing agent, has a wide temperature range of thermosensitive color change, and has a good decorative effect at the same time.