75results about How to "Little loss of brightness" patented technology

The invention relates to the technical field of display devices, in particular to brightness correction method and system for a display device. In the method, (1) brightness correction is carried out on more than one brightness sensor; (2) in the normal operation of the display device, the brightness values of the brightness sensors after brightness correction are used as the brightness value of pixel points corresponding to the brightness sensors; (3) brightness collecting interpolation is carried out on pixel points without the arrangement of the brightness sensors to obtain the brightness values corresponding to the pixel points; and (4) local brightness compensating factor calculation and brightness compensation are carried out to each pixel point. The brightness correction method and the brightness correction system have the characteristics of clear structure and simple calculation and are easy to realize, and when a single-screen brightness is corrected, the brightness compensation calculation is carried out by taking a small screen as a unit, therefore, the minimum compression of the brightness values of all the pixel points is avoided and the brightness loss is effectively reduced.

The invention discloses a liquid crystal television gamma curve debugging method capable of reducing brightness loss. The liquid crystal television gamma curve debugging method in the invention comprises the steps of: A, defining the backlight coordinate and colour temperature according to the colour coordinate and the colour temperature target value of the complete machine; and B, a segmented debugging method for segmenting a gamma curve into four sections, and performing gamma curve debugging through the gamma curve in four stages. According to the liquid crystal television gamma curve debugging method capable of reducing brightness loss disclosed by the invention, due to matching of colour coordinate and colour temperature of backlight and a liquid crystal panel and target colour coordinate and colour temperature and the segmented debugging method of the gamma curve, the debugging brightness loss of a liquid crystal screen can be effectively reduced; resource waste can be reduced; the consistency in colour temperature in each gray scale in 0-255 is kept; and the energy efficiency index and the image quality of the liquid crystal screen are improved.

The invention relates to a near-infrared absorption film material with the night vision compatible characteristic and a preparation method of the near-infrared absorption film material. The preparation method comprises the following steps of: adding 0.1-0.5 part by mass of near-infrared absorbent to 20-50 parts by mass of organic solvent and stirring to obtain a uniform solution; and adding 100 parts by mass of matrix resin and 5-20 parts by mass of resin curing agent to the solution, stirring and dispersing to obtain a near-infrared absorbing coating material. In the near-infrared absorptionfilm material with night vision compatible characteristic, one layer is a transparent film matrix and the other layer is a near-infrared absorbing layer formed by coating a coating material with the near-infrared ray absorbing characteristic; the average transmissivity of the near-infrared absorption film material with the night vision compatible characteristic on the light with the wavelength ranging from 400nm to 630nm is 20-30 percent; and the average transmissivity of the near-infrared absorption film material with night vision compatible characteristic on the light with the wavelength ranging from 660nm to 930 nm is 0.1-0.2 percent. The near-infrared absorption coating material is prepared by a simple preparation process and has lower production cost, is suitable for industrial production on a certain scale and is convenient and quick to use.

The embodiment of the invention provides a display device and a control method thereof. The control method of the display device comprises the steps that an image processor divides a frame of image into M images and sends the M images to a display controller, wherein the M is an even number larger than or equal to 2; and the display controller controls the display panel to sequentially display the M images in a frame period, and controls the grating panel to sequentially form grating patterns corresponding to the M images in the frame period. The invention discloses a double-layer panel structure based on a grating panel and a display panel. A frame of image is displayed in multiple times in a frame period, and grating patterns corresponding to the images displayed for multiple times are formed in sequence through time-sharing control, peep-proof display is achieved, switching between the peep-proof display mode and the shared display mode is achieved, and the display device has the advantages of being small in brightness loss, high in display resolution ratio, free of loss of peep-proof display state images and the like.

The invention relates to an LED display system having a pulse scattering mode and a method thereof. The system comprises an LED controller and a plurality of LED unit plates that are in series connection. Each of the LED unit plate respectively includes an LED drive board and a plurality of LED lamps. The LED controller emits a data signal and a control signal. An array D [ 0: (H-1)] is used to express H bit gray values of an LED lamp of a drive of a certain end and the D [ 0 ] is used to express a lowest bit value of the H bit gray values. The D [ 0: (H-1)] is split into a high bit D [ ( H-n) : ( H-1) ] and a low bit D [ 0 : ( H-n-1) ]. The high bit is split into m * 2 <n>-times, m * 2 <n-1>-times . . . or m*2-times display and shift within a certain time, wherein the time is equal to a result of m * T_ FRAM. The low bit is fused and is expressed by an expression of m * D [ 0: ( H-n-1) ]. And the formula of the scattering formula is expressed as follows: m * D [ 0 : ( H-1) ] = m * ( 2 <n > * 2 <H-n-1> * T + 2 <H-n-1> * T + . . . + 2 * 2 <H-n-1> * T ) + m * D [0:( H-n-1) ]. According to the invention, more uniform brightness is provided; scintillation is obviously reduced; and brightness losses can be substantially reduced; moreover, different system application demands can be met by using different splitting modes.

The invention discloses a displayer substrate, a manufacturing method of the display substrate and a display device and belongs to the technical field of display. The displayer substrate comprises a substrate base plate. A pixel unit is formed on the substrate base plate and comprises a color development structure, a first light-reflecting structure arranged on the periphery of the color development structure, a blocking structure arranged on the side face of the color development structure and located on the side, away from the color development structure, of the first light-reflecting structure, and a light-reflecting layer arranged on the blocking structure. A light transmission area and a second light-reflecting structure are formed on the light-reflecting layer, the orthographic projection of the light transmission area on the substrate base plate is located within the orthographic projection of the first light-reflecting structure on the substrate base plate, and the orthographic projection of the color development structure on the substrate base plate is located within the orthographic projection of the second light-reflecting structure on the substrate base plate. The color development structure, the first light-reflecting structure, the blocking structure and the light-reflecting structure form a cavity. Liquid crystal and a polarizer are not needed, light absorption of the liquid crystal and the polarizer is avoided, and the effects of reducing light brightness loss and saving energy are achieved.

This invention relates to a line control circuit of an organic EL display screen, which applies a first grade buffer storage structure, that means to increase buffer storages and selectors and uses a synchronous way on the basis of a traditional line data serial transmission circuit on a screen to effectively reduce the loss of brightness in scanning and increase the frame frequency. Under the gray of 256 stage, when the scan circuit appliesíŒ128-1-64-4-16-8-32-2íŒweight value series, the brightness loss reduces 40% and the transmission rate increases 20%.

The invention discloses a light leak preventive back light unit of a light guide plate. The back light unit comprises an L-shaped support, a light source, reflection paper, the light guide plate and adiffuser plate; the short side of the support is vertical to the long side, the light source is attached to the right side of the short side of the support, the reflection paper is disposed in the upper surface of the long side, the light guide plate is arranged on the reflection paper, and the diffuser plate is arranged on the light guide plate; and a lens is arranged in the left side of the light guide plate, and the bottom of the light guide plate is provided with lattice points. The back light unit is thin, light leak preventive and highlight. According to the invention, the lens is additionally arranged in the left side of the light guide plate, so that the light source emits diffused light, the diffused light is gathered in the light guide plate via the lens thereof, light leak in agap between the light source and the light guide plate is reduced effectively, and brightness loss is reduced; and at the same time, the total thickness of the light guide plate is reduced on the basis that the lens of the light guide plate is not changed, and the back light unit is thinner.

The invention provides a high-brightness LED, comprising: a transparent substrate, which is formed by materials including aluminium arsenide gallium (AlxGa1-xAs); a luminescent layer, which grows up on the transparent substrate, and is formed by materials including aluminum phosphide gallium indium (AlGaInP); a window layer, which grows up on this luminescent layer, and is formed by materials including GaP; an upper electrode layer, which forms an ohm contact with the window layer; as well as a lower electrode layer, which forms an ohm contact with the transparent substrate, in which the x value in molecular formula AlxGa1-xAs of the transparent substrate material is set as a numerical value which makes the transparent substrate to have a transmissivity with high energy gap to the specific wavelength light sent by the luminescent layer.

The invention relates to a color enhancement film used for a color display device, and a preparation method thereof. The color enhancement film comprises a transparent basal membrane and a color enhancement coating coating the transparent basal membrane, wherein an optical wavelength conversion material is dispersively distributed in the color enhancement coating. The optical wavelength conversion material can at least partially convert light in a first predetermined wavelength scope into light in a second predetermined wavelength scope so as to improve color purity of three primary colors, i.e., red, green and blue, in a display backlight source, broaden the display color range and enhance color trueness of a display. The color enhancement film does not severely reduce the brightness of the display while substantially improving the color range of the display to 110% before use. At the same time, the color enhancement film can be functionally compounded with existing functional optical films in a display luminescence module, the functions include a light scattering function, a brightness enhancement function and an eye protection function, and therefore, increases of the total quantity and the total thickness of the optical films in the luminescence module are prevented.

The invention discloses an image enhancement method and device, a storage medium and a terminal. The image enhancement method comprises: obtaining a to-be-processed image; determining a brightness value of each pixel in the to-be-processed image, and performing logarithm transformation on the brightness value of each pixel to obtain a brightness logarithm value of each pixel; carrying out Gaussianfiltering of at least two scales on the brightness logarithm value of each pixel to obtain filtering results corresponding to the at least two scales; for each pixel, respectively calculating the difference between the brightness logarithm value and the brightness filtering values of at least two corresponding scales to obtain the reflectivity of the corresponding object position of each pixel under at least two scales; for each pixel, performing weighted summation on the reflectivity under at least two scales to obtain the final reflectivity of the object position corresponding to each pixel; and performing inverse logarithm transformation at least according to the final reflectivity of the object position corresponding to each pixel. According to the technical scheme, the defogging effect can be improved, and the image quality is improved.

The invention discloses a backlight structure, a display panel and a display device. A flexible printed circuit (FPC) is connected with a backplane through heat conduction glue, thereby achieving an effect of facilitating heat dissipation before lamps. The backlight structure provided by the invention comprises the backplane and the FPC, and the FPC is connected with the backplane through the heat conduction glue. The backplane has better thermal conductivity, so that the FPC is connected with the backplane through the heat conduction glue, which can achieve the effect of facilitating the heat dissipation before the lamps.

The invention relates to the technical field of image processing, and provides an image blurring processing method and device. The method comprises the following steps: determining a first part of pixels in a to-be-processed image according to a pixel value adjustment threshold of the to-be-processed image, wherein the pixel value of the first part of pixels is greater than the pixel value adjustment threshold of the to-be-processed image; performing first processing on all pixels of the to-be-processed image so as to increase the pixel value of the first part of pixels; performing fuzzy processing on all pixels of the to-be-processed image after the first processing; and performing second processing corresponding to the first processing on all pixels of the to-be-processed image after thefuzzy processing, so that the pixel values of the first part of pixels after the fuzzy processing are reduced, and an image after the blurring processing of the to-be-processed image is obtained. According to the method, the brightness loss of the high-brightness region of the to-be-processed picture in the fuzzy processing process can be effectively reduced, so that the blurring effect of the image is improved.

The embodiment of the invention provides a brightness correction method and device, a storage medium and an electronic device. The method comprises the following steps: determining an image coordinate of a lighting point in an obtained light emitting diode (LED) display screen image; determining brightness information of the lighting points based on the image coordinates; performing inverse transformation processing on a brightness distribution trend in the brightness information to obtain a brightness value and a chrominance value of the lighting point; determining a target correction value of the lighting point by using the brightness and chrominance value; and based on the actual brightness value of the lighting point and the target correction value, determining a correction coefficient of the lamp point in the LED display screen, and the correction coefficient is used for correcting the brightness of the lamp point in the LED display screen. According to the method and the device, the problem that the corrected LED display screen cannot uniformly display due to the difference between the lamp point data obtained by the image and the actual lamp point data in the related technology is solved, and the effect of accurately adjusting the display of the LED display screen is achieved.

The invention discloses a short-focus projection lens structure with transmittance of 0.52. The short-focus projection lens structure is characterized by comprising twelve lenses which are sequentially arranged, namely, a front-group first piece is negative meniscus aspherical lens, a front-group second piece is negative meniscus aspherical lens, a front-group third piece is biconcave spherical lens, a front-group fourth piece is single-convex spherical lens, a rear-group first piece is negative meniscus spherical lens, a rear-group second piece is biconvex lens, a rear-group third piece is balsaming lens of a biconcave lens and a biconvex, a rear-group fourth piece is balsaming lens of a biconvex lens and a biconcave lens, a rear-group fifth piece is biconvex lens and a rear-group sixth piece is biconvex lens. The short-focus projection lens structure is ultra-short in distance and low in brightness loss, can be matched with multiple rear projection machines to manufacture an ultra-thin large-screen rear projector and can be matched with various digital projectors, and is suitable for various occasions required to project large pictures in an ultra-short distance.

The invention discloses a multipurpose LED eye protection table lamp. The multipurpose LED eye protection table lamp comprises a pencil sharpener, a base, a level, an alarm clock, an alarm, an infrared inductor, an extension column, a rotating joint, a cross bar, a lamp cover, an LED lamp and a cooling fan; the pencil sharpener is arranged on the base; the level is arranged on the base; the alarm clock is arranged on the base; the alarm is arranged on the base; and the extension column is arranged in the center position of the upper surface of the base, and is provided with the infrared inductor. The multipurpose LED eye protection table lamp prevents influence on sleep at later night, timely corrects the sitting posture to prevent influence on physical development, adjusts proper illumination intensity to protect eyes from being injured, prevents temperature rise caused by long-time work, accelerates the element aging, is simple in structure and convenient to use, and facilitates popularization.

The invention discloses a coding mode selection method, which comprises the steps of determining the chroma cost of a chroma component and the brightness cost of a brightness component of a coding unit in a to-be-coded image frame, detecting the motion characteristic of the coding unit, determining the chroma coefficient of the chroma cost and the brightness coefficient of the brightness cost according to the motion characteristic, and selecting a coding mode according to the chroma coefficient and the brightness coefficient. Adjusting the chromaticity cost according to the determined chromaticity coefficient, and adjusting the brightness cost according to the determined brightness coefficient; determining the image cost of the coding unit based on the adjusted chromaticity cost and the adjusted brightness cost; wherein the chromaticity coefficient and the brightness coefficient are used for enabling the first cost contribution of the adjusted chromaticity cost in the image cost to be increased; and selecting a coding mode according to the image cost. According to the invention, the chromaticity cost in the image cost is increased, so that the chromaticity is maximized with smaller brightness loss.

The invention provides an image restoration method and device based on visual selection fusion, equipment and a medium. The method comprises the steps: obtaining the threshold feature information of sky region segmentation of a foggy image through a statistical model, and carrying out the segmentation of a sky region of the image according to the threshold feature information, and obtaining the effective range of a global atmospheric background light value; obtaining an initial transmissivity image of the foggy day image, and optimizing the transmissivity image by using an adaptive boundary limitation L0 gradient minimization filtering method; within the effective range of the global atmospheric background light value, inputting the optimized transmissivity image into a dark primary colortheoretical model to obtain a plurality of restored initial defogged images; and constructing a method based on visual selection to select a defogged image suitable for participating in fusion from each initial defogged image, and fusing the selected defogged images by using an image fusion method based on a YCbCr color space to obtain a final fog-free image. Through the technical scheme of the invention, the restoration quality of the foggy image can be stabilized.

The invention discloses an LED display module and an LED display screen. The LED display module comprises an LED lamp panel, an optical filling layer and an optical film layer. The sides, away from the circuit board, of the LED light-emitting pieces are provided with a light emitting face and the optical filling layer covers the plane where the light-emitting face is located and fills the gaps between the LED light-emitting pieces. The optical film layer comprises an ink coating; a plurality of through holes are formed in the ink coating, the through holes penetrate through the ink coating in the thickness direction of the LED display module, and an ink area is formed between every two adjacent through holes; and the ink coating covers the optical filling layer, the light-emitting faces correspond to the through holes one to one, and the ink areas correspond to the gaps. The ink area shields the gap, and the contrast ratio and the black screen consistency are improved. The brightness loss is reduced through the through holes, and the temperature of the LED display screen is influenced due to the fact that the lost brightness is finally converted into heat, so that the brightness loss is reduced, the converted heat is reduced, and the influence on the temperature of the LED display screen is reduced.

The invention discloses a high voltage LED and a production technology thereof, and relates to the LED production technology field. DBR layers are disposed on a surface of a semi-finished product by adopting the evaporation technology, and then after the etching treatment, the DBR layers on side walls of quantum wells and surfaces of N-GaN layers of all cells can be kept, and the DBR layers on the substrate surface, the side walls of the N-GaN layer, the side walls of the quantum well, the side walls of the P-GaN layer, and the surface of the P-GaN layer, which are arranged between the second electrode area of the cell and the first electrode area of another adjacent cell can be kept. The high voltage LED is characterized in that the DBR insulation layers can be arranged on the side walls of the quantum wells and the surfaces of the N-GaN layers of all cells, and the DBR layers can be arranged on the substrate surface, the side walls of the N-GaN layer, the side walls of the quantum wells, the side walls of the P-GaN layer, and the surface of the P-GaN layer, which are arranged between the second electrode area of one cell and the first electrode area of the adjacent cell. The light loss can be reduced, and then the brightness of the chip can be increased, when the DBR insulation functions are adopted by the cells.

The invention discloses a color coordinate calibration method and system, processing equipment and a computer storage medium, and the method comprises the steps: enabling a display screen to display a test image, testing the chromaticity of the display screen, and obtaining a test color coordinate of each primary light; detecting whether the test color coordinate of each primary color light is within the standard color coordinate range of each primary color light; and when the test color coordinates of one or more primary lights are not within the standard color coordinate range of the corresponding primary lights, determining target color coordinates and target white balance color temperatures of the primary lights of the display screen, according to the test color coordinates, the target color coordinates and the target white balance color temperatures, adjusting the test color coordinates of the one or more primary lights to be within the standard color coordinate range of the corresponding primary lights. According to the invention, the single display panel can be simply and quickly adjusted, and the brightness loss and the color gamut coverage rate loss are minimum.