629results about How to "Improve color cast" patented technology

The invention provides an automatic white balance correcting method which includes the steps of collecting reference white points of an image to be corrected, determining the reference white points to draw a reference white region, calculating the number of the reference white points, currently located in the reference white region, of the image to be corrected, judging whether mixed color temperature exists in the image to be corrected or not, if the number of the reference white points is smaller than or equal to a first preset threshold value or it is judged that the mixed color temperature exists in the image to be corrected, calculating white balance gains through a preset algorithm strategy, carrying out color complementing correcting on the image to be corrected through the white balance gains, if it is judged that the mixed color temperature does not exist or the number of the reference white points is larger than the first preset threshold value, calculating the white balance gains according to the number of the white points located in the reference white region, and carrying out color complementing correcting on the image to be corrected through the white balance gains. According to the automatic white balance correcting method, the color shifting problem generated when the image is corrected through the white balance gains calculated with a reference white region table look-up method when the number of the reference white points is excessively small and the mixed color temperature exists is solved.

The invention provides an AMOLED brightness compensation method and an AMOLED driving system. A compensation unit (4) comprising first, second and third brightness sensors (42, 43, 44) and a compensation IC (41) and a test pixel unit (5) comprising red, green and blue test pixels (51, 52, 53) are additionally arranged. Brightness of the red, green and blue test pixels (51, 52, 53) at the initial moment and the compensation moment is respectively sensed by the first, second and third brightness sensors (42, 43, 44) so that compensation voltage respectively required by red, green and blue organic light-emitting diodes can be calculated by the compensation IC (41), then brightness compensation is respectively performed on the red, green and blue organic light-emitting diodes, and thus reduction of displayer brightness caused by brightness attenuation of the organic light-emitting diodes and color cast caused by difference of brightness attenuation speed of different colors of organic light-emitting diodes can be improved and luminescence brightness and color gamut of the AMOLED can be maintained.

The invention provides an array substrate. Each sub-pixel in the array substrate comprises a control thin film transistor and a pixel electrode electrically connected with the control thin film transistor. Each pixel electrode comprises a main region pixel electrode, an auxiliary region pixel electrode and a first connecting electrode, wherein the main region pixel electrode and the auxiliary region pixel electrode are arranged in a spaced mode, and the first connecting electrode is electrically connected with the main region pixel electrode and the auxiliary region pixel electrode. The main region pixel electrodes and the auxiliary region pixel electrodes are slit electrodes shaped like a Chinese character 'mi'. The width of main region branch electrodes of the main region pixel electrodes is smaller than that of auxiliary region branch electrodes of the auxiliary region pixel electrodes, and the width of main region slits of the main region pixel electrodes is smaller than that of auxiliary region slits of the auxiliary region pixel electrodes. Color cast can be relieved through the structural difference of the main region pixel electrodes and the auxiliary region pixel electrodes, the number of TFTs in the sub-pixels is reduced, the opening rate of the pixels is increased, and the difficulty of optimal common voltage balance regulation and control of main regions and auxiliary regions is reduced.

The embodiment of the invention provides a display panel and a preparation method thereof and a display device, relates to the technology of flexible display, and can effectively improve the color cast problem of the bent area of the display panel relative to the middle area and enhance the display effect. The display panel comprises a flexible substrate which comprises a middle area and a presetbending area arranged at least one side of the periphery of the middle area, wherein the preset bending area is set to be bent to the display direction back to the display panel; a display layer whichis arranged on the middle area and the preset bending area; and a transparent cover film layer which is arranged on the display layer and comprises a first part arranged on the middle area and a second part arranged on the preset bending area, wherein the first part and the second part are connected and the thickness of at least partial area of the second part gradually decreases along the direction away from the first part. The preparation method is used for preparation of the display panel.

Provided is a pixel structure. The pixel structure comprises multiple sub pixels which are arrayed in an array. Each sub pixel comprises an active component and a pixel electrode electrically connected with the active component. All pixel electrodes are used for defining misdirected areas and display regions separated by the multiple misdirected areas. Only partial sub pixels further comprise light-shading patterns arranged corresponding to the misdirected areas.

The invention discloses a pixel driving method, which comprises the steps as follows: firstly, to identify the first predetermined gray scale and the second predetermined gray scale corresponded with the target gray scale based on the target gray scale of the pixel. The sum of the said two predetermined gray scales together with the total equivalent gray scale is the same as the said target gray scale; secondly, the first driving voltage and the second driving voltage are generated based on the said two predetermined gray scales to respectively drive the two sub-pixels of the said pixel within one picture time. If the said equivalent gray scale is less than the first setting gray scale, the said first driving voltage will be higher than the said second driving voltage, while the said first driving voltage will be lower than the said second driving voltage if the said equivalent gray scale is more than or equal to the said first setting gray scale.

The invention discloses a display panel and a display device, belonging to the technical field of display, comprising: a substrate; a driver device layer, a light emitting device layer, an encapsulation layer and a light scattering layer arranged on the substrate; a light emit device layer include a plurality of first color light emitting units and a plurality of second color light emitting unit.The wavelength of the first color light emitted by the first color light emitting unit is lambda 1, and the wavelength of the second color light emitted by the second color light emitting unit is lambda 2, lambda 2 (lambda 1; a light scatter layer include a plurality of light scattering units; a light scattering unit overlapping with the first color light emitting unit in a direction perpendicularto the substrate is a first light scattering unit. In the first light scattering unit, the distribution density of scattering particles in the substrate is Rho 1, and the relative refractive index ofthe scattering particles is N1; Where 5% <= Rho 1 <= 30% and/or N 1 >= 0. 5. The invention can improve the color deviation phenomenon of the display panel, thereby improving the display quality of the display panel.

The embodiment of the present invention provides a flexible OLED display and a manufacturing method thereof, and relates to the display technology field. Light emitted from sub-pixels is prevented from interfering with adjacent sub-pixels, and thus the color purity is improved and a color case phenomenon is improved. The flexible OLED display includes a flexible substrate, top emission light emitting diodes arranged on the flexible substrate and positioned in sub-pixel areas, a pixel defining layer positioned between every two adjacent top emission light emitting diodes, and a packaging layer. The packaging layer at least includes a first pattern layer. The first pattern layer at least includes first patterns that correspond to the pixel defining layers. Except the positions corresponding to the first patterns, other positions of the packaging layer are all transparent. Provided are the flexible OLED display and preparation thereof.

The invention relates to a liquid crystal display, which comprises a liquid crystal display panel, a scanning driving circuit and a data driving circuit. The data driving circuit comprises a shift register, a sampler, a controller and a digital-analog converter and the scanning driving circuit is used for scanning the liquid crystal display panel. The data driving circuit is used for providing a grayscale voltage for the liquid crystal display panel when the liquid crystal display panel is scanned and the controller can respectively adjust the grayscale voltages corresponding to the red, green and blue lights output onto the liquid crystal display panel so as to respectively improve the phenomenon of color shift of the red, green and blue.

The invention discloses a touch display panel and a touch display device. The touch display panel comprises touch electrode blocks, touch signal lines and suspension electrodes, wherein the suspension electrodes and the touch signal lines are formed in the same layer, and the suspension electrodes are located between every two adjacent subpixels located on an array substrate and correspond to the positions of black matrixes among color stoppers on a color film substrate. Under the situation that no manufacturing step is added, the color cast problem of the touch display panel can be improved. In addition, the width of each touch signal line in the line direction is increased properly, the resistance value of each touch signal line is decreased, the problem that the edge of each touch electrode block is inviable is effectively improved, and the display effect of the touch display panel and the touch display device is improved.

The invention discloses a method and device for mending the hue error of an OLED display panel, and a display device. Ageing is carried out on all the monochromatic luminescent devices in the OLED display panel; the aged monochromatic luminescent devices are subjected to a luminescence lifetime attenuation test, the luminescence lifetime attenuation rates corresponding to the monochromatic luminescent devices are obtained; when it is determined that the difference between every two luminescence lifetime attenuation rates of the monochromatic luminescent devices is larger than a preset threshold, the monochromatic luminescent device with the largest luminescence lifetime attenuation rate is aged again till the difference between every two luminescence lifetime attenuation rates of the monochromatic luminescent devices is smaller than the preset threshold. Therefore, the initial service life of all the monochromatic luminescent devices can be rapidly consumed, the problem of residual images in the initial stage of usage is mended, and meanwhile, the lifetime attenuation rates of the monochromatic luminescent devices become slow and consistent so that hue error which happens to displayed images after an OLED display product is used for a long time can be mended.

The invention relates to a driving method and driving device of a display panel. The driving method comprises a step of detecting a voltage change delay time of a data line at a fan out area, a step of controlling the data output signal of the data line according to the voltage change delay time, and a step of adjusting a scanning line to drive a voltage signal according to the data output signal such that the effective charging times of pixels driven by different data lines in a same scanning line are consistent. According to the above driving method and driving device of a display panel, through changing falling edge times of data output signals on different data lines, a color cast problem brought by different voltage change time delays is improved, and the optical grade of a product is improved. Moreover, process demands and the cost of the product are not changed according to the method.

The invention discloses an organic electroluminescent device, and the device comprises a light-emitting layer which comprises a plurality of light-emitting regions arranged in an array, wherein the light-emitting regions are organic electroluminescent regions; a hole transmission layer, an anode and a reflecting layer, which are sequentially arranged from the light-emitting layer to a light outgoing side far from the organic electroluminescent device; an electronic transmission layer, a cathode and a semi-transmitting and semi-reflecting layer, which are sequentially arranged from the light-emitting layer to a light outgoing side close to the organic electroluminescent device. The projection of each light-emitting region on the hole transmission layer serves as the first position, and the thicknesses of the hole transmission layer at at least one first position at least comprise two preset thicknesses. Compared with the prior art, the device solves a technical problem that a micro-cavity structure causes the decrease of the big-view-angle brightness of the device and the big-view-angle color cast.

The present invention provides a display panel and a display device and relates to the technical field of display. By partially absorbing light with higher brightness, three stimulus values X, Y, andZ of a display screen of the display panel are balanced to further improve the color shift phenomenon of an OLED panel. The display panel includes a substrate and a plurality of pixel units arranged on the substrate. Each of the pixel units comprises a first OLED device, a second OLED device and a third OLED device. The first OLED device emits first color light, the second OLED device emits secondcolor light, and the third OLED device emits third color light. Each of the pixel units also comprises a light absorbing layer for absorbing a part of the light of the first color light emitted by the first OLED device and/or a part of the light of the second color light emitted by the second OLED device, and the brightness of the first color light and the second color light is larger than the brightness of the third color light emitted by the third OLED device.

The invention discloses a self-adaptive low-light level image intensification method for reducing color cast, relates to low-light level image intensification methods, and aims to solve the problems that the image color cast is intensified when a conventional low-light level image intensification method is used, and a relatively bright area of an image is over-inhibited or over-intensified when being not well processed. The self-adaptive low-light level image intensification method comprises the following steps: firstly, converting a low-light level image into a RGB (Red, Green, Blue) color space, performing inverted S-shaped conversion, performing inversion, calculating minimum values of different pixel points of reversed images at three RGB channels so as to obtain initial dark channel images, and performing median filtering so as to obtain atmosphere light intensity estimation values; converting the inversion images into an HSV color space, and calculating self-adaptive intensification parameters by taking average gray level values of a V channel as average brightness; calculating transmissivity images according to atmosphere imaging equations, modifying so as to obtain transmissivity smooth images, with the atmosphere imaging equations, performing demisting operation on the three RGB channels of the inversion images, performing inversion, and performing S-shaped conversion, thereby obtaining finally intensified images. The self-adaptive low-light level image intensification method is applicable to intensification processing on images.

The embodiment of the invention discloses a curved display panel and a manufacturing method thereof. The curved display panel includes at least two curved parts, wherein in the connected carved parts,the curvature radii of the curved parts are different. The curved display panel also includes a compensation micro lens layer positioned on a light emitting side of the curved display panel, whereinthe larger the curvature radius of each curved part is, the lower the light scattering degree of the portion, corresponding to the curved part, of the compensation micro lens layer is; the compensation micro lens layer includes multiple compensation micro lenses. Compared with existing curved display panels, the provided curved display panel includes the compensation micro lens layer; scattering is carried out on light through the compensation micro lens layer, the emitted light in different colors can be better scattered, the amount of light with color shift in an original color shift area isreduced, and therefore the color shift phenomenon of the curved display panel can be reduced so that the viewing angle deterioration phenomenon of the curved display panel can be alleviated.

The invention discloses a sub-pixel display structure and a liquid crystal display panel using the same. The sub-pixel display structure comprises two electrode blocks. One electrode block can perform charge sharing through a charge sharing switch. At least one of the two electrode blocks is further connected with an extra electrode block. When being used for a 3D (Three Dimensional) liquid crystal display panel with a graphical phase delay film, the sub-pixel display structure can meet the 3D visual angle requirement just by shading the extra electrode block by a black matrix; and simultaneously, the two electrode blocks can sequentially maintain the operations thereof, thus, the color cast phenomenon of the 3D liquid crystal display panel in large visual angle also can be improved.

An image forming apparatus that forms a color image using a transparent toner and color toners based on received printing information includes a determination unit configured to determine whether a transparency attribute is set for an object included in the printing information, and a generation unit configured to generate a transparent object using the transparent toner on the object when the determination unit determines that the transparency attribute is set for the object.

The invention provides a liquid crystal display, comprising a plurality of scanning beams, a plurality of data wires, a plurality of common voltage wires and a plurality of pixel units, wherein, each pixel unit is respectively connected with one scanning beam of the scanning beams and one data wire of the data wires, each pixel unit comprises two sub-pixel units, wherein, the two sub-pixel units are respectively connected with two common voltage wires which provide different voltages to the two sub-pixel units. The liquid crystal display can effectively avoid the color cast phenomenon and realize good display effect.