Abstract: A display device includes: an image display panel including a plurality of pixels each including first to fourth sub-pixels; and a signal processing unit. The signal processing unit determines an expansion coefficient related to the image display panel, obtains output signals of the first to the third sub-pixels based on at least input signals of the first to the third sub-pixels and the expansion coefficient to be output to the first to the third sub-pixels respectively, obtains a fourth sub-pixel correction value as a correction value of an output signal of the fourth sub-pixel based on the input signals of the first to the third sub-pixels and the expansion coefficient, and obtains the output signal of the fourth sub-pixel based on the input signals of the first to third sub-pixels, the expansion coefficient, and the fourth sub-pixel correction value to be output to the fourth sub-pixel.

Abstract: According to an aspect, a display device includes: an image display panel in which pixel units each including a first pixel including a first, a second, and a third sub pixels, and a second pixel including the first, the second, and a fourth sub pixels are periodically arranged; and a signal processing unit. The signal processing unit obtains a corrected output signal of the third sub pixel of the first pixel based on an input signal of the third sub pixel of the first pixel and an input signal of the third sub pixel of the second pixel of the same pixel unit, and obtains a corrected output signal of the fourth sub pixel of the second pixel based on an input signal of the fourth sub pixel of the first pixel of the same pixel unit and an input signal of the fourth sub pixel of the second pixel.

Abstract: According to an aspect, an image display panel includes: a first pixel including (d?1) sub pixels, which are first to (d?2)-th sub pixels and a (d?1)-th sub pixel, and a second pixel that is adjacent to the first pixels and includes (d?1) sub pixels, which are first to (d?2)-th sub pixels and a d-th sub pixel. A region of the image display panel includes a first pixel display region and a second pixel display region. The first to (d?2)-th sub pixels of the first pixel, one part of the (d?1)-th sub pixel, and one part of the d-th sub pixel are arranged in the first pixel display region. The first to (d?2)-th sub pixels of the second pixel, the other part of the (d?1)-th sub pixel, and the other part of the d-th sub pixel are arranged in the second pixel display region.

Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.

Abstract: A driving method for an image display apparatus which includes an image display panel having a plurality of pixels arrayed in a two-dimensional matrix and each configured from a first subpixel for displaying a first primary color, a second subpixel for displaying a second primary color, a third subpixel for displaying a third primary color and a fourth subpixel for displaying a fourth color, and a signal processing section. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, a third subpixel output signal, and a fourth subpixel output signal. The driving method includes a step of calculating a maximum value (Vmax(S)) of brightness, a saturation (S) and brightness (V(S)), and determining the expansion coefficient (?0).

Abstract: A display device includes a conversion section which generate a data conversion signal including a first number of bits from an input signal, an error dispersion section which generates a display control signal including a second number of bits that is smaller than the first number of bits from the data conversion signal and which spatially disperses errors that occur at the time of generating the display control signal, and a display panel section which displays an image on the basis of the display control signal.

Abstract: Disclosed herein is a driving method for an image display apparatus which includes an image display panel and a signal processing section. Each of the pixels includes a first subpixel for displaying a first primary color, a second subpixel for displaying a second primary color, a third subpixel for displaying a third primary color and a fourth subpixel for displaying a fourth color. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, and a third subpixel output signal. The driving method includes the step, further carried out by the signal processing section, of calculating a fourth subpixel output signal based on a fourth subpixel control second signal and a fourth subpixel control first signal, and outputting the calculated fourth subpixel output signal to the fourth subpixel of the (p,q)th pixel.

Abstract: In a display device, pixels each including first to fourth subpixels that respectively display first to third primary colors and fourth color are arranged on an image display panel. A lighting unit emits light to the panel from the rear thereof. A control unit calculates a required luminance value for each block of the display surface of the panel based on an input image signal, determines a light source lighting amount of the lighting unit based on luminance distribution information on the lighting unit so as to satisfy the required luminance value, generates luminance information on each pixel based on the luminance distribution information and light source lighting amount, generates an output image signal that drives the subpixels based on the luminance information and input image signal, controls the lighting unit by the light source lighting amount, and controls the panel by the output image signal.

Abstract: According to an aspect, a display device includes a signal processing unit that converts an input value of a input HSV color space of an input signal into an extension value of an extended HSV color space extended with a first color, a second color, a third color, and a fourth color to generate an output signal; performs peaking processing for analyzing the input signal of the imaged image to detect a focusing region; and determines whether to perform display in a peaking mode for highlighting the focusing region. When it is determined to perform display in the peaking mode, the signal processing unit increases a value of the output signal of the fourth color of a pixel in an outer edge of the focusing region.

Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.

Abstract: According to an aspect, a display device includes a first sub-pixel, a second sub-pixel, a third sub-pixel; and a fourth sub-pixel. A signal obtained based on at least an input signal for the first sub-pixel and an extension coefficient is supplied to the first sub-pixel. A signal obtained based on at least an input signal for the second sub-pixel and the extension coefficient is supplied to the second sub-pixel. A signal obtained based on at least an input signal for the third sub-pixel and the extension coefficient is supplied to the third sub-pixel. A signal obtained based on at least the input signal for the first sub-pixel, the input signal for the second sub-pixel, the input signal for the third sub-pixel, and the extension coefficient is supplied to the fourth sub-pixel. The extension coefficient varies based on at least a saturation of the input signals.

Abstract: According to an aspect, a display device includes an image display panel on which pixels each including sub-pixels for displaying a first color, a second color, a third color, and a fourth color are arranged, and a signal processing unit that converts an input value of an input signal for an input HSV color space into an output signal for an extended HSV color space. The signal processing unit divides the extended HSV color space into a plurality of spaces, sets limit proportion values different from each other with respect to at least two spaces of the divided spaces respectively, calculates an extension coefficient ? with respect to the input signal by using the input signal and a limit proportion value set with respect to a space according to the input signal, and calculates the output signal based on at least the input signal and the extension coefficient ?.

Abstract: An image display apparatus includes: a grayscale conversion device configured to perform grayscale conversion processing on input data to output data; and a display device configured to operate in accordance with the output data to display an image by pixels arranged in a two-dimensional matrix state, wherein the grayscale conversion device is configured to perform first error diffusion processing for converting N0-grayscale input data into N1-grayscale data (2<N1<N0), to perform second error diffusion processing for converting data having a predetermined grayscale or less into lower grayscale data having N2 grayscales (1<N2<N1), to perform third error diffusion processing for converting data having the predetermined grayscale or more into higher grayscale data having N3 grayscales (1<N3<N1), and to combine the lower grayscale data and the higher grayscale data to generate N4-grayscale output data (1<N4<N1).

Abstract: According to one embodiment, a display device includes a switching liquid crystal unit, a display, and a controller. The switching liquid crystal unit includes optical elements switching an aperture pattern including an aperture portion and a light-shielding portion. The display overlaps the switching liquid crystal unit and displays parallax images including right and left eye images. The controller acquires positional information relating to a position of a viewer, and controls a position of the aperture pattern. The controller switches the aperture pattern from a first aperture pattern to a second aperture pattern so that a right eye always views the right eye image and a left eye always views the left eye image, and starts the switching before the viewer moves to an optimal switching position where a luminance viewed from the first aperture pattern is substantially equal to a luminance viewed from the second aperture patterns.

Abstract: According to an aspect, an image display panel includes: a first pixel including (d-1) sub pixels, which are first to (d-2)-th sub pixels and a (d-1)-th sub pixel, and a second pixel that is adjacent to the first pixels and includes (d-1) sub pixels, which are first to (d-2)-th sub pixels and a d-th sub pixel. A region of the image display panel includes a first pixel display region and a second pixel display region. The first to (d-2)-th sub pixels of the first pixel, one part of the (d-1)-th sub pixel, and one part of the d-th sub pixel are arranged in the first pixel display region. The first to (d-2)-th sub pixels of the second pixel, the other part of the (d-1)-th sub pixel, and the other part of the d-th sub pixel are arranged in the second pixel display region.

Abstract: According to an aspect, a display device includes: an image display panel in which pixel units each including a first pixel including a first, a second, and a third sub pixels, and a second pixel including the first, the second, and a fourth sub pixels are periodically arranged; and a signal processing unit. The signal processing unit obtains a corrected output signal of the third sub pixel of the first pixel based on an input signal of the third sub pixel of the first pixel and an input signal of the third sub pixel of the second pixel of the same pixel unit, and obtains a corrected output signal of the fourth sub pixel of the second pixel based on an input signal of the fourth sub pixel of the first pixel of the same pixel unit and an input signal of the fourth sub pixel of the second pixel.

Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.

Abstract: According to an aspect, a display device includes: an image display panel; a color conversion device including a signal processing unit and a signal output unit; a planar light-source device; and a light-source-device control unit. The signal processing unit includes a color conversion circuit that converts an input signal in a reference color area into a converted input signal generated in a definition color area where a chromaticity point of at least one of a first color, a second color, and a third color is inside of a reference color area, and a four-color generation circuit that generates an output signal and a light-source-device control signal from the converted input signal. The signal output unit outputs the drive signal to each sub-pixel based on the output signal. The light-source-device control unit outputs a drive voltage for emitting white light on the planar light-source device based on the light-source-device control signal.

Abstract: Second barrier electrodes are arranged under first barrier electrodes so as to fill gaps between the first barrier electrodes, while an insulating layer is located between the first barrier electrodes and the second barrier electrodes. The number of first barrier electrodes and the number of second barrier electrodes in each barrier pitch are 6 or more. The positions of the barriers formed by the first barrier electrodes and the second barrier electrodes are controlled by the reception of a signal representing detected positions of the eyes of a viewer. If pitches of the first barrier electrodes are defined as BE, and the widths of regions in which the first barrier electrodes are overlapped with the second barrier electrodes are defined as BA, a ratio BA/BE of the widths BA to the pitches BE are 0.3 or smaller. This configuration can suppress the occurrence of moire.

Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.