Abstract: A local failure of display video is suppressed. An LED data calculating portion that generates an approximate curve obtained by approximating the distribution of values of an input image, the approximate curve whose amount of change is less than or equal to a predetermined value, and calculates LED data based on the generated approximate curve and a liquid crystal transmittance calculating portion that calculates the liquid crystal transmittance based on the input image and the approximate curve generated by the LED data calculating portion are provided.

Abstract: A multi-display device includes an image-display-light emitting backlight which includes a light emitting element arranged in each of a plurality of areas to emit light to form planar light; and a light emission controller configured or programmed to generate emission luminance data, for each of the areas, to drive the light emitting element. The light emission controller includes a luminance correcting controller configured or programmed to correct the emission luminance data on the basis of installation directions of image display devices and connection information that is information on connection positions thereof.

Abstract: A local failure of display video is suppressed. An LED data calculating portion that generates an approximate curve obtained by approximating the distribution of values of an input image, the approximate curve whose amount of change is less than or equal to a predetermined value, and calculates LED data based on the generated approximate curve and a liquid crystal transmittance calculating portion that calculates the liquid crystal transmittance based on the input image and the approximate curve generated by the LED data calculating portion are provided.

Abstract: A multiple primary color display device includes a plurality of pixels located in a matrix including a plurality of rows and columns. The pixels are each formed of at least four sub pixels for displaying different primary colors, which can be sorted into n number of virtual pixels, and use each of the n number of virtual pixels as a minimum color display unit for providing display. The sub pixels which form each of the virtual pixels include a sub pixel common to another of the virtual pixels. When a line having a width corresponding to the n number of virtual pixels is displayed, two sub pixels which are located at both of two ends, in a width direction, of the line and display a certain identical primary color to each other have a luminance lower than the original luminance that the two sub pixels.

Abstract: An image display device has pixels each of which includes sub-pixels of four or more colors, and displays a high-definition image that has been subjected to sub-pixel-level filtering processing. The image display device includes a display panel in which color filters of sub-pixel colors including three principal colors of red, green, and blue as well as at least one color other than the three principal colors are arranged regularly; and an image processor that performs filtering processing with respect to an input image signal.

Abstract: In order to display an image with a high contrast ratio while suppressing power consumed by a multi-display device and to adjust brightness of images displayed on image display devices, the multi-display device includes light emission APL value adjusting means 102. The light emission APL value adjusting means 102 sends, to light emission control means, a light emission APL value that has been adjusted, on the basis of light emission APL values calculated by light emission APL value calculating means of image display devices 11 to 19, so that total light emission power value of image-display light-emitting means 6 does not exceed an allowable power value and images are displayed at predetermined brightness.

Abstract: When conducting video display with a wide color gamut display based on a video signal conforming to a standard (sRGB standard and the like) having a color reproduction range narrower than that of the wide color gamut display, the video processing circuit 2 corrects a color in a prescribed correction target color range partly including a red hue reference range as a center part in the color range of an equal hue from achromatic colors having the lowest saturation to red having the highest saturation in an expanded color reproduction range but not including red having the highest saturation in the expanded color reproduction range, so that the hue may change to a hue akin to yellow in the expanded color reproduction range. In so doing, the hue in the red hue reference range changes to red hue in the color reproduction range conforming to the sRBG standard.

Abstract: The occurrence of the halo phenomenon caused in a display panel unit is detected in a liquid crystal display device that displays an image in the display panel unit including color filters of a plurality of colors by respectively controlling emission ratios of a plurality of LEDs emitting lights of colors respectively corresponding to the plurality of color filters. Upon detection, a part of the display panel unit, for example, the channel number and the vicinity thereof are set as a non-detection area in which the detection of the halo phenomenon is restricted and the remaining area is set as a detection area. The chroma of light, which corresponds to mixed light from the plurality of LEDs, is reduced by controlling the emission ratios of the LEDs on the basis of the detection result in the detection area, so that the color of light is closer to white.

Abstract: A multiple primary color display device (100) includes a plurality of pixels (P) located in a matrix including a plurality of rows and a plurality of columns. The plurality of pixels are each formed of a plurality of sub pixels including at least four sub pixel for displaying different primary colors from one another. The multiple primary color display device can sort the plurality of sub pixels which form each of the pixels into n number of virtual pixels (n is an integer of 2 or greater), each of which is formed of two or more sub pixels, and use each of the n number of virtual pixels as a minimum color display unit for providing display. The two or more sub pixels which form each of the n number of virtual pixels include a sub pixel common to another of the n number of virtual pixels.

Abstract: It is expected to provide an image display apparatus and image display method that can reduce the risk that an image quality is undermined due to a halo phenomenon caused by the leak of light passing through a non-corresponding color filter from a LED. The image display apparatus can respectively control luminous efficiencies of plural color LEDs, i.e., R-LED (11a), G-LED (11b) and B-LED (11c) that emit light through a color filter to a displaying unit. The image display apparatus obtains luminous efficiencies for a frame of RGB image signal (S2), calculates a light leak amount and then detects whether the halo phenomenon may occur or not (S3-S5). When the halo phenomenon is considered to occur, the luminous efficiencies of LEDs (11a, 11b, 11c) included in the liquid crystal display apparatus are controlled to make the light from the LEDs (11a, 11b, 11c) become close to white light (S8).

Abstract: Provided is an image processing apparatus that obtains an effect of improving perceived definition even when an input image signal does not include much of a high range component.

Abstract: A multi-display device M1 includes image-display-light emitting means 6 for causing a light emitting element 62 arranged in each of a plurality of areas 600 to emit light to form planar light; and light emission control means 5 for generating emission luminance data, for each of the areas 600, for driving the light emitting element 62. The light emission control means 5 includes luminance correcting means 56 for correcting the emission luminance data on the basis of installation directions of image display devices 11 to 19 and connection information that is information on connection positions thereof.

Abstract: In order to display an image with a high contrast ratio while suppressing power consumed by a multi-display device and to adjust brightness of images displayed on image display devices, the multi-display device includes light emission APL value adjusting means 102. The light emission APL value adjusting means 102 sends, to light emission control means, a light emission APL value that has been adjusted, on the basis of light emission APL values calculated by light emission APL value calculating means of image display devices 11 to 19, so that total light emission power value of image-display light-emitting means 6 does not exceed an allowable power value and images are displayed at predetermined brightness.

Abstract: Provided is an image display device having pixels each of which includes sub-pixels of four or more colors and requires fewer dither matrices. This image display device includes a display section in which color filters of sub-pixel colors that are M colors in total including three principal colors of red, green, and blue, as well as at least one color other than the three principal colors are arranged regularly; and a gray-scale processing section (50) that performs gray-scale processing by a dither method with respect to an input image signal. The M sub-pixel colors are divided into N groups (G1 to GN) in such a manner that there is at least one group to which two or more colors belong. The gray-scale processing section (50) includes dither matrix storage ROMs (541 to 54N) that store N combinations of dither matrices corresponding to the N groups, respectively.

Abstract: An image processing apparatus where noise in a dark region indicated by an input image signal may be reduced and perceived fineness of texture may be enhanced is provided. It includes: a high pass filter (11) that extracts a high frequency component from an input image signal; a sign determining unit (12) that determines the sign of the high frequency component; a brightness value calculator (14) that determines the brightness value of the input image signal; and a parameter determining unit (gain value determining unit) (13) that determines a parameter (for example, a gain) to be used in the image processing for the high frequency component processor based on the brightness value and the sign information.

Abstract: A display device according to the present invention includes a plurality of pixels arranged in a matrix. Each of the plurality of pixels is formed of four or five types of sub pixels that display different colors from each other. In each pixel, a first sub pixel that displays a color having the highest luminance and a second sub pixel that displays a color having the second highest luminance are located so as not to be adjacent to each other. The four or five types of sub pixels include a plurality of display units, each of which is capable of displaying a specific color and is formed of one sub pixel or two or more continuous sub pixels. In the display device according to the present invention, when an input image has a resolution higher than a display resolution defined by a total number of the plurality of pixels, each of the plurality of display units is usable as a virtual pixel for providing display.

Abstract: Provided is an image display device that has pixels each of which includes sub-pixels of four or more colors, and displays a high-definition image that has been subjected to sub-pixel-level filtering processing. The image display device includes a display panel (500) in which color filters of sub-pixel colors including three principal colors of red, green, and blue as well as at least one color other than the three principal colors are arranged regularly; and an image processor (40) that performs filtering processing with respect to an input image signal.

Abstract: Provided is an image processing apparatus that obtains an effect of improving perceived definition even when an input image signal does not include much of a high range component.

Abstract: When each value of luminance signals of three primary colors in the primary video signal is less than the output lower limit value, in short, when the gradation level is negative, the negative gradation level of the present primary color is, in accordance with its magnitude, in other words, in accordance with the absolute value of the negative gradation level, replaced with positive gradation levels of other two primary colors. Therefore, in accordance with A VIDEO SIGNAL CONVERTER of this invention, even when the primary video signal includes a signal value having a negative gradation level, in short, even when one or more of each signal value of RGB is below the output lower limit value, a color according to the combination of those gradation levels (a combination of each level of primary colors (RGB)) can be reproduced (displayed) by a display means.

Abstract: The occurrence of the halo phenomenon caused in a display panel unit is detected in a liquid crystal display device that displays an image in the display panel unit including color filters of a plurality of colors by respectively controlling emission ratios of a plurality of LEDs emitting lights of colors respectively corresponding to the plurality of color filters. Upon detection, a part of the display panel unit, for example, the channel number and the vicinity thereof are set as a non-detection area in which the detection of the halo phenomenon is restricted and the remaining area is set as a detection area. The chroma of light, which corresponds to mixed light from the plurality of LEDs, is reduced by controlling the emission ratios of the LEDs on the basis of the detection result in the detection area, so that the color of light is closer to white.