Abstract: The present disclosure provides a method for determining a pixel voltage, an electronic device, and a storage medium. The method includes: obtaining an initial color shift ratio of a sub pixel to be tested, obtaining an initial evaluation value of a preset grayscale value, and obtaining a current evaluation value of the preset grayscale value according to a current color shift ratio; comparing the initial evaluation value with the current evaluation value; and determining a standard sub pixel voltage of the sub pixel to be test according to the current color shift ratio, when the current evaluation value is greater than the initial evaluation value.

Abstract: A method for adjusting grayscales of a display panel and a display panel, wherein firstly obtaining a reference brightness corresponding to each original grayscale according to each original grayscale, then filtering an initial dataset to obtain a preliminary dataset, calculating a weight of a preset brightness according to a front-viewing weight and the reference brightness, and finally selecting a group of grayscale data corresponding to the preset brightness with the smallest weight as a target high grayscale and a target low grayscale. The present disclosure can increase visual angles of the display panel and solve visual angle defects.

Abstract: The invention relates to a process of converting methanol in a fluidized bed reactor comprising feeding a methanol-containing feedstock into a fluidized bed reactor, contacting the feedstock with a catalyst, to produce a product comprising ethylene and propylene under effective conditions; the fluidized bed reactor comprises a diluent-phase zone and a dense-phase zone, wherein the diluent-phase temperature difference between any regions of the diluent-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 20° C., and the dense-phase temperature difference between any regions in the dense-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 10° C.

Abstract: The invention relates to a process of converting methanol in a fluidized bed reactor comprising feeding a methanol-containing feedstock into a fluidized bed reactor, contacting the feedstock with a catalyst, to produce a product comprising ethylene and propylene under effective conditions; the fluidized bed reactor comprises a diluent-phase zone and a dense-phase zone, wherein the diluent-phase temperature difference between any regions of the diluent-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 20° C., and the dense-phase temperature difference between any regions in the dense-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 10° C.

Abstract: A fluidized bed reactor, a device for preparing low-carbon olefin, and a method for preparing low-carbon olefin are provided. The reaction zone of the fluidized bed reactor is sequentially, from bottom to top, provided with a raw material first distributor, a raw material second distributor and a catalyst distributor; the catalyst distributor is connected with the catalyst second feeding inlet; a dense-phase zone is formed between the raw material first distributor and the raw material second distributor, and the area where the catalyst distributor is located is formed as a catalyst distribution zone connected with the dense-phase zone; and at least one catalyst first feeding inlet(s) is provided on the side wall of reactor of the dense-phase zone. The distribution of the catalyst and the full contact of the catalyst with the raw materials can be achieved using the fluidized bed reactor and the device.

Abstract: The present disclosure provides a method for determining a pixel voltage, an electronic device, and a storage medium. The method includes: obtaining an initial color shift ratio of a sub pixel to be tested, obtaining an initial evaluation value of a preset grayscale value, and obtaining a current evaluation value of the preset grayscale value according to a current color shift ratio; comparing the initial evaluation value with the current evaluation value; and determining a standard sub pixel voltage of the sub pixel to be test according to the current color shift ratio, when the current evaluation value is greater than the initial evaluation value.

Abstract: A mixing device for mixing at least two particulate materials has a first riser used for loading first particles and a second riser surrounding and being coaxial with the riser and used for loading second particles. The upper part of the first riser extending beyond the top of the second riser. At least a part of the upper part of the first riser and at least a part of the upper part of the second riser being located inside a mixing zone container, such that the first and second particles are delivered to the inside of the mixing zone container by means of the first and second risers respectively and mixed.

Abstract: The present application discloses a mura detecting method, device and readable storage medium. The method includes obtaining an area of a target test image obtained from an original image signal where mura exists to serve as a target test area; processing the target test area to obtain a grayscale distribution; obtaining a brightness gradient distribution based on the grayscale distribution; calculating a SEMU value based on the brightness gradient distribution; and obtaining a location corresponding to the mura area based on the SEMU value. It realizes objective measurement and evaluation of halo phenomenon.

Abstract: The invention relates to a process of converting methanol in a fluidized bed reactor comprising feeding a methanol-containing feedstock into a fluidized bed reactor, contacting the feedstock with a catalyst, to produce a product comprising ethylene and propylene under effective conditions; the fluidized bed reactor comprises a diluent-phase zone and a dense-phase zone, wherein the diluent-phase temperature difference between any regions of the diluent-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 20° C., and the dense-phase temperature difference between any regions in the dense-phase zone having a methanol concentration of more than 0.1 wt % (preferably more than 0.01 wt %) in the fluidized bed reactor is controlled to be less than 10° C.

Abstract: The present application discloses a mura detecting method, device and readable storage medium. The method includes obtaining an area of a target test image obtained from an original image signal where mura exists to serve as a target test area; processing the target test area to obtain a grayscale distribution; obtaining a brightness gradient distribution based on the grayscale distribution; calculating a SEMU value based on the brightness gradient distribution; and obtaining a location corresponding to the mura area based on the SEMU value. It realizes objective measurement and evaluation of halo phenomenon.

Abstract: Provided are a liquid crystal display device and a driving method thereof. The first pixel holding voltage and the second pixel holding voltage outputted by the positive and negative half-period pixel electrode are not symmetric with respect to the common voltage outputted by the common electrode. Thus, the gray scale inversion of the positive and negative half-period images shown by the liquid crystal display device can be compensated. The skin color whitening problem in side view is improved, thereby solving the viewing angle problem of the liquid crystal display device.

Abstract: The present invention provides a method for detection of in-panel mura based on Hough transform and Gaussian function fitting, including: S1. acquiring an original gray-scale image; S2. acquiring a binarized image according to the gray-scale image; S3. performing an edge detection via Hough transform to crop edges of the gray-scale image; and S4. performing histogram statistics on the cropped gray-scale image, fitting the histogram to a Gaussian function, and detecting an in-panel mura result according to the fitting parameters. The present invention is able to determine images of the display region via Hough transform in order to acquire the region for in-panel mura detection, and also evaluate severity of in-panel mura via parameters acquired by Gaussian function fitting, and thus to quickly detecting in-panel mura.

Abstract: The disclosure discloses a system and a method for detecting image sticking on a display. The method includes dividing a display image on the display equally into at least two identical sections, one of the at least two sections is as a reference section, drawing sectional chess board images according to a size of the reference section, Fourier transforming the sectional chess board images and each of the sections of the display image respectively, obtaining characteristic frequencies of image sticking on each of the sections and first spectrum energy values in each of spectrum structures correspondingly, additionally obtaining second spectrum energy values of reference frequencies of each of the sections in frequency domain structures, obtaining ratios of the first spectrum energy values to the second spectrum energy values corresponding to each of the sections.

Abstract: The disclosure provides a method for generating images on a display, including: S1, obtaining first Lab values according to LCH values; S2, obtaining a first original value of a measured display; obtaining first tristimulus values of a color n according to tristimulus values of a pure white image as reference values and the first Lab value; S3, obtaining first output gray-scale values according to the first tristimulus values; S4, obtaining first input gray-scale values according to the first output gray-scale values; S5, obtaining second Lab values according to the first input gray-scale values; S6, comparing the first Lab values and the second Lab values. A system of the disclosure includes an obtaining module, a converting module, a judging module, an outputting module and a correcting module. Compared with the prior art, colors in the display image approach the real colors.

Abstract: The present invention provides a method for detection of in-panel mura based on Hough transform and Gaussian function fitting, including: S1. acquiring an original gray-scale image; S2. acquiring a binarized image according to the gray-scale image; S3. performing an edge detection via Hough transform to crop edges of the gray-scale image; and S4. performing histogram statistics on the cropped gray-scale image, fitting the histogram to a Gaussian function, and detecting an in-panel mura result according to the fitting parameters. The present invention is able to determine images of the display region via Hough transform in order to acquire the region for in-panel mura detection, and also evaluate severity of in-panel mura via parameters acquired by Gaussian function fitting, and thus to quickly detecting in-panel mura.

Abstract: The disclosure provides a method for generating images on a display, including: S1, obtaining first Lab values according to LCH values; S2, obtaining a first original value of a measured display; obtaining first tristimulus values of a color n according to tristimulus values of a pure white image as reference values and the first Lab value; S3, obtaining first output gray-scale values according to the first tristimulus values; S4, obtaining first input gray-scale values according to the first output gray-scale values; S5, obtaining second Lab values according to the first input gray-scale values; S6, comparing the first Lab values and the second Lab values. A system of the disclosure includes an obtaining module, a converting module, a judging module, an outputting module and a correcting module. Compared with the prior art, colors in the display image approach the real colors.

Abstract: The present application discloses a detection system for image sticking of display panel and method thereof, includes obtaining the display panel image to be detecting the image sticking; obtaining the image display portion of the display panel in the display panel image; performing Fourier transform to the image display portion, obtaining a first spectral energy value with characteristic frequency corresponding to the image sticking in the image display portion, and a second spectral energy value of the reference frequency in the image display portion; determining the ratio of the first spectral energy value and the second spectral energy value is exceeding the numerical range of the corresponded qualified detection, if beyond, it is judged as disqualified. By the method described above, the present application can solve the conventional image sticking judgment based on human subjectivity, accurate judgment and objectively evaluation of severity the image sticking of the display panel.

Abstract: The present application discloses a detection system for image sticking of display panel and method thereof, includes obtaining the display panel image to be detecting the image sticking; obtaining the image display portion of the display panel in the display panel image; performing Fourier transform to the image display portion, obtaining a first spectral energy value with characteristic frequency corresponding to the image sticking in the image display portion, and a second spectral energy value of the reference frequency in the image display portion; determining the ratio of the first spectral energy value and the second spectral energy value is exceeding the numerical range of the corresponded qualified detection, if beyond, it is judged as disqualified. By the method described above, the present application can solve the conventional image sticking judgment based on human subjectivity, accurate judgment and objectively evaluation of severity the image sticking of the display panel.

Abstract: The disclosure discloses a system and a method for detecting image sticking on a display. The method includes dividing a display image on the display equally into at least two identical sections, one of the at least two sections is as a reference section, drawing sectional chess board images according to a size of the reference section, Fourier transforming the sectional chess board images and each of the sections of the display image respectively, obtaining characteristic frequencies of image sticking on each of the sections and first spectrum energy values in each of spectrum structures correspondingly, additionally obtaining second spectrum energy values of reference frequencies of each of the sections in frequency domain structures, obtaining ratios of the first spectrum energy values to the second spectrum energy values corresponding to each of the sections.

Abstract: An image-sticking inspection method and a device. The method includes: after displaying a standard checkerboard image for a period of time, changing to an image having a specified grayscale value and capturing a residual image; respectively performing a fourier transformation to the standard checkerboard and residual image to obtain a first and a second energy spectrum; respectively transforming the first and the second energy spectrum to polar coordinate; for polar angles from 0 to 2?, summing values of each first and second energy spectrum in the polar coordinate to obtain a checkerboard and an image-sticking energy spectrum; obtaining a characteristic frequency corresponding to a maximum value of the checkerboard energy spectrum; obtaining a first and a second energy value respectively corresponding to the characteristic and a zero frequency of the image-sticking energy spectrum; and dividing the first energy value by the second energy value to obtain an image-sticking evaluation value.