74results about How to "Reduce color shift" patented technology

An OLED device includes at least one light emitting layer arranged to produce light in a predetermined emitting area, a reflector and a semi-transparent reflector forming a microcavity structure for resonating the light produced in the at least one light emitting layer, and a color filter element disposed relative to a first portion of the predetermined emitting area so as to filter the light produced by the at least one light emitting layer and transmit substantially unfiltered light through a second portion of the predetermined emitting area.

The object of the present invention is to provide a novel phase difference film, and a polarizer capable of contributing to alleviate a color shift generating in an oblique direction of a liquid crystal display, and to provide a liquid crystal display device of VA mode alleviated in the color shift depending on the viewing angle when displaying a black color. The phase difference film composed ofa polymer film with an optical anisotropic layer of <=5 [mu]m thickness satisfies following conditions that in-surface retardation Re(550) at wave length of 550 nm is 0 to 10 nm, thickness directionalretardation Rth(550) of the same wave length is 250 to 450 nm, and 1.00<=Rth(450) / Rth(550)<=1.07 is satisfied.

Disclosed is an organic light-emitting diode (OLED) display. In one aspect, the OLED display includes a first substrate, an insulating layer arranged above the first substrate and including a first inclined part, and a first electrode arranged on the insulating layer. The OLED display also includes a luminous element layer arranged on the first electrode, a second electrode arranged on the luminous element layer, and color conversion layers and a transmission layer which are arranged on the second electrode. The first electrode includes a second inclined part, and the second inclined part is arranged on the first inclined part of the insulating layer and is inclined along the first inclined part of the insulating layer.

The embodiment of the invention discloses an image collection method and device and a storage medium. According to the embodiment of the invention, when a terminal starts a preposed camera, the environment light brightness and environment light color temperature are detected so as to adjust the screen brightness of the terminal, and the light with the supplementary light color is projected to a photographed object through a screen, thereby enabling the environment light brightness to reach the brightness required by preset photographing. The color temperature can be balanced, so as to reduce the noise points and color deviation, to achieve the better collection of the images of the photographed object, and to improve the image quality.

The invention relates to a band-pass color wheel device for three-dimensional stereoprojection display, which comprises two color wheels capable of rotating around the centre, each color wheel is inlayed with at least an R color band-pass optical filter, a G color band-pass optical filter and a B color band-pass optical filter. Compared with prior art, the invention has the advantages of simple manufacture, low cost and good projection effect.

The invention discloses a compensation device and method for a display screen image in a backlight local dimming system. The display screen image is divided into a corresponding quantity of image blocks according to a plurality of backlights. A block brightness variation value deciding device receives the display screen image and calculates the average value, the maximum value and the initial value of the image blocks. A quality / power saving priority deciding device respectively generates backlight dimming signals to the image blocks according to the average value, the initial value, the first threshold value and the second threshold value of the image blocks. An on-time filter generates the backlight pulse width modulation signals of the image blocks according to the backlight dimming signal adaptabilities of the image blocks. A backlight-diffused approximating device generates a backlight-diffused image according to the backlight pulse width modulation signals of the image blocks. An image compensation device compensates the display screen image according to the backlight-diffused image to generate a compensated screen image. By adopting the device and the method disclosed by the invention, the calculation amount and the hardware circuit area can be reduced and the image quality can be improved.

The invention provides an image defogging method based on a dark channel prior and a Markov random field. Aiming at problems that image quality is greatly reduced under a haze environment and a lot of defogging image structure detail information is lost by using an existing algorithm, a single image defogging method combining the dark channel prior (DCP) and the Markov random field (MRF) is provided. The method is characterized by firstly using sub-block portion overlapping local histogram equalization (POSHE) to enhance an original fog image so as to increase a contrast ratio, and through a DCP algorithm, acquiring an optimized transmissivity; using a constraint characteristic of a MRF model to image structure detail information to carry out modeling on the transmissivity so as to further refine the transmissivity; and according to a substantial characteristic of a sky domain, through a partitioning search method, calculating an atmospheric optical value. Compared to a traditional defogging method, by using the method of the invention, an accurate transmissivity image can be acquired, image structure information is effectively maintained, and the defogged image presents abundant details and a real color visual sense effect.

Optical films, and organic light-emitting display apparatuses employing the same, include a high refractive index pattern layer including a first surface and a second surface facing each other, wherein the first surface includes a pattern having a plurality of grooves. The plurality of grooves each have a curved surface and a depth greater than a width thereof. The high refractive index pattern layer is formed of a material having a refractive index greater than 1. The optical films, and the organic light-emitting display apparatuses, further include a low refractive index pattern layer formed of a material having a refractive index smaller than the refractive index of the material constituting the high refractive index pattern layer. The low refractive index pattern layer includes a filling material for filling the plurality of grooves.

The invention discloses a method and a device for implementing automatic white balance based on background modeling. The method comprises the steps of carrying out background modeling on an input image; counting white blocks of a background image, and estimating a light source color temperature under the current environment according to a weighted RGB value of the counted white blocks; and carrying out white balance adjustment on the input image based on estimation for the light source color temperature. By adopting the method and the device disclosed by the invention, influences imposed on white balance parameters by a moving object in the scene can be improved, thereby reducing influences imposed on color reproduction by the moving object, thus reducing color drifting of video, and improving visual effects of the video.

The invention provides a liquid crystal display and a driving method, in particular to application image segmentation technology which comprises the following steps: segmenting image data into a plurality of image blocks, carrying out image analysis on the image blocks, regulating low gray-scale image data of the image blocks into high gray-scale image data, outputting a backlight control signal to a backlight control module, controlling a corresponding backlight module block of the image block by the backlight control module, and darkening the backlight of the image block to reduce the problem of color migration of the image block.

A multilayer optical film exhibiting excellent screen contrast while suppressing color shift. A liquid crystal panel and a liquid crystal display are also provided. The multilayer optical film comprises at least a polarizer, a first optical compensation layer where an index ellipsoid has a relation of nx>ny=nz and the in-plane retardation Re1 is 80-300 nm, a second optical compensation layer wherean index ellipsoid has a relation of nz>nx=ny, and a third optical compensation layer where an index ellipsoid has a relation of nx>ny=nz and the in-plane retardation Re3 is 80-200 nm formed in thisorder, and the absorption axis of the polarizer intersects the slow axis of the first optical compensation layer perpendicularly.

The invention provides a yellow light absorption structure and a backlight module having the same. The yellow light absorbing structure comprises a yellow light absorbing material, a blue light preventing film layer and a substrate, the blue light preventing film layer is arranged on either side of the base, and the yellow light absorbing material is arranged in the blue light preventing film layer or arranged in the substrate. Since the yellow light absorbing structure is provided with the blue light preventing film and the yellow light absorbing material, so when integrated in a monitor module, the yellow light absorbing structure can be used to filter the blue light wave band that causes damage to human eyes, can further reduce damage to human eyes caused by a display screen, can absorb a part of the yellow light wave band to reduce color shift of the display screen, and keeps the white balance of color of the display screen.

A liquid crystal display device comprising first and second polarizing elements of which transmission axes are perpendicular to each other, and, disposed between the polarizing elements, a liquid crystal layer vertically aligned in a black state, and first and second optically anisotropic layer is disclosed. In the liquid crystal display device, the first optically anisotropic layer is a biaxial optically anisotropic layer of which in-plane retardation (Re) and thickness-direction retardation (Rth) are larger at a longer wavelength range within a range of from 400 nm to 700 nm, and the second optically anisotropic layer satisfies Orim10 in which Re (550) is in-plane retardation (Re) at a wavelength of 550 nm and Rth (550) is thickness-direction retardation at the same wavelength.

The invention relates to a color segmentation three-dimensional projection device based on band-pass color wheel light-filtering, comprising a left projector and a right projector respectively corresponding to a left eye and a right eye. Both of the left projector and the right projector comprise light sources, band-pass color wheels which can carry out RGB (Red, Green, Blue) three-channel light-filtering, digital micromirror devices DMD and projection lenses. The light sources, the band-pass color wheels and the digital micromirror devices DMD are sequentially arranged, and the projection lenses are positioned on a reflection path of the digital micromirror devices DMD. Compared with the prior art, the invention has the advantages of low cost and good projection effect and is simple to manufacture.

Printing heads of combinations of four ink colors and seven printing characteristic ranks are previously used to print an image for measurement, and table parameters corresponding to all of the combinations of nozzle ink colors and printing characteristic ranks are obtained on the basis of a measurement result of this image for measurement and stored in a memory. Then, when printing is actually performed in a printer, a primary color image for measurement is printed for each nozzle of a printing head for each of four ink colors. A printing characteristic rank for each nozzle is obtained for each of four ink colors based on a measurement result of this image for measurement, and a table parameter is selected that corresponds to the same combination as the combination of the obtained printing characteristic rank of each nozzle of four ink colors, by referring to the memory.

The invention provides a method for configuring a fluorescent powder coating liquid of a white light emitting diode. The fluorescent powder coating liquid of the white light emitting diode includes the fluorescent powder and a binder, wherein the binder is an inorganic compound nanometer silica sol, and the inorganic compound nanometer silica sol and the fluorescent powder have weight percentage ratios of 60-85% and 40-15%. The method includes: slowly pouring the silica sol into a ball mill with 15%-40% of fluorescent powder, then adding ball mill balls with diameters of phi6, phi10, phi15 and a weight ratio of 2:1:1 for mixing and milling. The fluorescent powder coating liquid has the advantages that the membrane enveloping effect on the fluorescent powder is realized by utilizing the nano silica sol; the damage of the harmful ultraviolet radiation on the fluorescent powder is reduced; and the hot quenching property of the fluorescent powder is lowered so that the attenuation of the fluorescent powder and the color bleaching of the light emitting diode are reduced, and the aging resistance property of the light emitting diode is improved.

An optical compensation film with optically biaxial properties, wherein the longer the wavelength is, the larger the wavelength dispersion of a retardation Re in an in-plane direction and a retardation Rth in a thickness direction against light in a visible light region is; the film contains at least one inorganic particle; a concentration of the inorganic particle in a film surface layer is from 0.05% to 1.0%; an average concentration of the inorganic particle in the film is from 0.01% to 0.3%; and the concentration of the inorganic particle in the surface layer is larger than the average concentration of the inorganic particle in the film.

The invention relates to a multi-channel combined filter-based color segmentation three-dimensional projection device, which comprises a left projector and a right projector corresponding to a left eye and a right eye respectively, wherein both the left projector and the right projector comprise a light source, a projection lens, a prism and an R filter channel, a G filter channel and a B filter channel arranged side by side; and two groups of complementary wave bands of R1, G1 and B1, R2, G2 and B2 are generated by a method for segmenting the wave bands of the R, G and B channels respectively. The device greatly reduces the manufacturing difficulty of a light filter, reduces the cost, increases the brightness of a three-dimensional projection picture, reduces the color deviation of the three-dimensional projection picture, and effectively avoids double images, ghost images and the like in the prior art.

The invention discloses an LED and a display device, and relates to the display techniques. Due to the fact that quantum dot materials which can emit light under illumination of an LED chip are doped in an LED lamp cover which is far away from the LED chip, the influence of the temperature of the LED chip on the quantum dot materials is small, the color deviation of light emitting of the LED is reduced, and the quality of displaying is improved.

A transfer device, which transfers an image onto a recording medium directly or indirectly and is included in an image forming apparatus, includes an endless belt member extended between a drive roller rotated and a driven roller and configured to receive the image from the image carrier part onto either a surface thereof or the recording medium carried on the surface thereof while moving according to rotations of the drive roller, and a rotation speed detector configured to detect a rotation speed of the driven roller. An image detector is provided either to the transfer device or to the image forming apparatus to detect the image formed on the endless belt member directly or the recording medium carried on the endless belt member, and disposed facing the driven roller in a circumferential direction of the endless belt member.

A polarizing plate comprising at least one protective film; and a polarizing film, wherein the protective film disposed on a liquid crystal cell side has Re(lambda) and Rth(lambda) satisfying the conditions of 45nm=Re(590)=65nm and 150nm=Rth(590)=240nm, and the polarizing plate gives, when disposed in an orthogonal position, a hue a* and a hue b* of the polarizing plate disposed in an orthogonal position satisfying the formulae -1.0=a*=2.0 and -1.0=b*=2.0 (wherein Re(lambda) represents a retardation value in plane at a wavelength of lambda nm (unit: nm), and Rth(lambda) represents a retardation value along a thickness of the film (unit: nm)).

The invention discloses an LED Bin dividing method and an application product thereof. The LED Bin dividing method and an application product thereof are characterized in that LED Bin dividing parameters included in the method at least comprise brightness or luminous fluxes, voltage and chromaticity coordinates of wafers in LEDs, according to actual distribution conditions of the LED parameters under preset conditions, the parameters are divided into different section ranges, and the parameters in the sections are arranged and combined together to form a final Bin dividing standard. The Bin dividing condition or range of the Bin dividing parameters is reasonably and scientifically defined, scientific definition of optics, electricity and chromaticity is included, products with similar parameters are concentrated in a same Bin, LED products with Bin divided through the method are assembled together, color consistency of end application products can be greatly improved, and color difference or color deviation problems of a same batch of products can be solved.

In a method of manufacturing an optical sheet, a stacked structure may be formed by alternatively and repeatedly stacking at least one transparent layer and at least one light scattering layer. A first cut face may be formed by partially cutting the stacked structure. A second cut face may be formed by partially cutting the stacked structure. The second cut face may be parallel to the first cut face.

The invention provides a night identification method of an apple harvesting robot. The method includes the following steps that: image acquisition is performed under an artificial light source condition; color-based image segmentation is performed through adopting a R-G color difference segmentation method, and binaryzation is performed through adopting an OTSU algorithm; noises in images obtained in the second step are filtered out through filtering out small combination regions; approximate positions of apples in the images are positioned, and regions in original images, where the apples are located, are extracted; highlight light-reflection regions of the surfaces of the apples are extracted; and finally, the high highlight light-reflection regions and the images obtained in the third step are added together and are fused, so that final results can be obtained. With the night identification method of the apple harvesting robot adopted, problems existing in light source selection and layout as well as problems caused by shadows and light reflection in the night identification of the apple harvesting robot can be solved, and the apple harvesting robot can work normally at night.

The present invention relates to a retardation film having a homeotropic alignment liquid crystal film, a polarizing film, an IPS (In-Plane Switching) mode liquid crystal display and a method for preparing the same. More particularly, the present invention relates to a homeotropic alignment liquid crystal film prepared from a liquid crystal mixed solution containing a poly-merizable reactive liquid crystal monomer so as to improve a viewing angle characteristic of an ISP mode liquid crystal display and reduce a color shift; a retardation film prepared by integrating an oriented retardation film and a method for preparing the same; a polarizing film having the retardation film located between a polarizing element or plate and a liquid crystal cell and a method for preparing the same; and an IPS mode liquid crystal display having the polarizing film. There is an advantage in that since a homeotropic alignment liquid crystal film with a retardation of a thickness direction is prepared using a liquid crystal mixed solution containing a reactive liquid crystal monomer, a retardation film according to the present invention is not required for high-temperature heat treatment and cooling processes so that it can be applied to a high-speed continuous process. Further, there is an advantage in that a retardation film having an oriented retardation film integrated with the homeotropic alignment liquid crystal film is arranged between a polarizing element or polarizing plate of an IPS mod liquid crystal display and a liquid crystal cell so that a contrast ratio can be increased up to about 1520%, and a color shift characteristic can be also improved.

The present invention provides a liquid crystal panel according to an embodiment of the present invention, comprising a liquid crystal unit, a first polarizer disposed on one side of the liquid crystal unit, a second polarizer disposed on the other side of the liquid crystal unit, disposed between the liquid crystal unit and The cathode biaxial optical element and the anode C plate between the first polarizer and the isotropic optical element arranged between the liquid crystal unit and the second polarizer. Here, the cathode biaxial optical element is arranged between the first polarizer and the anode C-plate.

This invention provides a top-emission active matrix electroluminecient device including a substrate and a plurality of pixel areas formed within a display area of the substrate. Each of the pixel areas includes at least one sub-pixel area comprising at least, from top to bottom: a first conductive electrode layer, an electroluminecient layer, a second conductive electrode layer, a first reflective layer region, and a second reflective layer region. The first reflective layer region and second reflective layer region overlap each other in part. Some of the light rays emitted from the electroluminecient layer are reflected by the first reflective layer region and second reflective layer region, respectively, and are then directed upwards. The reflected light rays compensate the top-emitting light rays also emitted from the electroluminecient layer, reducing color shifts at different viewing angles due to the micro-cavity effect.

The invention discloses a full-automatic makeup removing and beautifying integrated device, which includes a shell. The shell is provided with a groove allowing the head to extend into the inner wallof the shell, a 3D scanner for scanning the face of a human body is arranged on the upper part of the groove, the groove is provided with four faces, a liquid collector is arranged on the bottom faceof the groove, a cross beam is arranged above the liquid collector, the cross beam is provided with a movement adjusting unit, and the movement adjusting unit is provided with a flexible cushion block; a 3D printer working arm is arranged at the top of the shell, the 3D printer working arm is provided with a 3D printer spraying head, a contact connecting part is arranged on the lower part of the 3D printer spraying head in a connected mode, a plurality of contacts are arranged on the lower part of the contact connecting part in a connected mode, and the contacts are located on the upper part of the groove and staggered to be not located on the same vertical surface with the 3D scanner during the action; and a plurality of liquid storage tanks are arranged on the upper part of the shell, and the liquid storage tanks are connected with the 3D printer spraying head through connecting pipes.

The present invention addresses the issue of providing: a vertically aligned liquid crystal display device, which achieves improved front contrast that makes it possible to save power, and which has a reduced color shift and a wider view angle; and a method for manufacturing such vertically aligned liquid crystal display device. The vertically aligned liquid crystal display device of the present invention has: a backlight; a vertically aligned liquid crystal cell having a configuration wherein a liquid crystal having negative dielectric constant anisotropy is sandwiched between two transparent substrates; and polarization plates, which are disposed on the display surface side and the backlight side of the vertically aligned liquid crystal cell, respectively. The vertically aligned liquid crystal display device is characterized in meeting specific requirements.

The embodiment of the invention discloses an image processing method and device. The method comprises the following steps: when the fact that a target image includes at least two light sources is detected, determining the distribution area corresponding to each light source in the at least two light sources; respectively processing the target image by using a white balance algorithm corresponding to each light source, generating at least two frames of processed images, wherein one light source corresponds to one frame of processed image; according to the distribution area corresponding to each light source, synthesizing the at least two frames of processed images into one image, and outputting the image. The method can reduce the color deviation of images under multiple light sources.