Abstract: According to an aspect, a display apparatus includes: an image display panel that displays an image thereon; a planar light source that includes a plurality of light sources and irradiates a plurality of divided areas of the image display panel with light from the back side of the image display panel; and a signal processor that drives the light sources individually based on input signals of the image to control brightness of the individual divided areas. The signal processor performs image display on the image display panel using output signals obtained by lowering brightness of a dark region in the image represented by the input signals.

Abstract: A display device includes: a first controller that outputs an output image signal having the same resolution as that of pixels to an image display panel; and a second controller that transmits an input image signal to the first controller, generates second luminance distribution data divided into regions at a second density lower than a first density equal to the resolution, and transmits the second luminance distribution data to the first controller. The second controller generates first luminance distribution data divided into regions at a third density lower than the second density, controls an illuminator based on the first luminance distribution data, and generates the second luminance distribution data by applying a polynomial interpolation to the first luminance distribution data. The first controller generates third luminance distribution data having the resolution, and generates the output image signal by adjusting the input image signal based on the third luminance distribution data.

Abstract: According to an aspect, a display device includes an image display panel; a planar light source including a light guide plate, a first sidelight light source, and a second sidelight light source; and a control unit. The control unit sets first luminance determination blocks in a first display surface of the image display panel and identifies a first luminance determination block to be a target of luminance correction by referring to luminance information on the light sources. The control unit sets second luminance determination blocks in a second display surface of the image display panel and identifies a second luminance determination block to be a target of luminance correction by referring to the luminance information on the light sources. The control unit controls light source lighting amounts of the respective light sources to satisfy luminance of the identified first luminance determination block and the identified second luminance determination block.

Abstract: According to an aspect, a display device includes: a display panel including a display area with pixels; a backlight; and a dimmer. The dimmer includes a dimming panel including a dimming area overlapping the display area and a control circuit. The dimming area includes a plurality of regions each including a first electrode and a second electrode. The control circuit includes a shift register configured to receive an electrical signal for controlling a potential of each of the first electrodes and including a plurality of sequential circuits coupled in series, a holding circuit to which an output of each of the sequential circuits is coupled, and a gradation voltage setter to which an output of the holding circuit is coupled. Each of the first electrodes is coupled to an output of the gradation voltage setter.

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device that includes a display area provided with n1 pixels and that is irradiated with light from the light sources; a light source controller controlling an operation of the light sources; and a display controller controlling an output gradation value of part or all of the pixels. The display area includes a plurality of partial areas, the partial areas corresponding to the light sources on a one-to-one basis. The light source controller determines the amount of light emitted from each light source corresponding to a corresponding one of the partial areas based on luminance of light required for the corresponding partial area. The display controller performs first correction and second correction when the amounts of light emitted from two light sources corresponding to two adjacent partial areas are different.

Abstract: According to one embodiment, a light source device includes a plurality of light emitting elements including at least first and second light emitting elements, lightguide, first circuit, second circuit, and controller. The lightguide includes a first surface on which light from light emitting elements is incident and a second surface through which the light exits. The first circuit connects light emitting elements in series. The second circuit can bypass each of light emitting elements. The controller turns on light emitting elements using the first circuit if light emitting elements function normally, and if one of light emitting elements functions abnormally, the controller turns on the light emitting element functioning normally using the second circuit.

Abstract: According to one embodiment, a display device includes an illumination device includes a first illumination portion and a second illumination portion, a display panel includes a first display portion illuminated by the first illumination portion, and a second display portion illuminated by the second illumination portion, and a controller which controls the illumination device and the display panel, wherein the first display portion includes a first sub-display portion, and a second sub-display portion adjacent to the second display portion, and the controller controls a modulation rate of the second sub-display portion of the first display portion, based on an amount of displacement between the illumination device and the display panel.

Abstract: A display device includes an image display panel, a backlight with independently driven light sources for lighting the image display panel, a backlight control section which calculates, on the basis of required luminance for each divided area based on an image signal and luminance distribution information for the backlight, tentative lighting levels of the light sources, selects the light sources in calculation order, calculates estimated luminance of a selected light source on the basis of the calculated tentative lighting levels or the calculated lighting level of an already selected light source and the luminance distribution information, and calculates, if the estimated luminance does not satisfy the required luminance, a lighting level of the selected light source that satisfies the required luminance on the basis of the tentative lighting level thereof and the luminance distribution information, and a calculation order change section which changes the calculation order at determined timing.

Abstract: A display device includes: an image display panel having a display area; a light source device configured to illuminate the image display panel with light sources; and a controller configured to control a lighting amount of each light source. The display area includes segment areas each illuminated by one or more of the light sources. Each segment area includes subsegment areas. The controller is configured to: calculate luminance required for each subsegment area, based on an image signal for each subsegment area; temporarily set luminance values of the respective segment areas for determining the lighting amounts of the light sources based on maximum luminance among the required luminance values of the respective subsegment areas of each segment area; and reset, based on at least the maximum luminance, the luminance value of at least the segment area adjacent to the corresponding subsegment area having the required luminance of the maximum luminance.

Abstract: According to an aspect, a display apparatus includes a segment necessary luminance calculator, a segment necessary luminance corrector, and a light emission amount calculator. The segment necessary luminance calculator creates segment necessary luminance data indicating the luminance necessary for each of light-emitting segments in accordance with image data. The segment necessary luminance corrector corrects the segment necessary luminance data for each of light-emitting blocks according to the highest luminance of one or a plurality of light-emitting segments included in each light-emitting block, in accordance with control data for dividing a light-emitting region and a display region into a plurality of blocks and the segment necessary luminance data.

Abstract: A signal processor of a display device includes: a light emission value calculating unit that calculates a light emission value; a chunk determining unit that determines whether pixels within a predetermined luminance value range are continuously present and determines an area of the continuous pixels as a chunk; a maximum luminance value detecting unit that detects a maximum luminance value inside the chunk in one of the partial areas; a luminance gain value determining unit that determines a luminance gain value based on the maximum luminance value such that a corrected light emission value that is a value acquired by multiplying the light emission value by the luminance gain value is a value of an upper limit emission value or less; and a light emission control unit that causes the light source units to emit light based on the corrected light emission value.

Abstract: According to an aspect, a display apparatus includes: an image display panel including a plurality of pixels and displaying an image; and a signal processor generating a second signal by multiplying signal values for a plurality of sub-pixels making up each of the plurality of pixels by a gain, the signal values being included in a first signal that is an input signal of the image. The the signal processor calculates a luminance of each of the plurality of pixels based on the signal values of the sub-pixels included in the respective pixels. The signal processor increases the gain by which the signal values of the sub-pixels of the pixel having a luminance greater than a first luminance threshold are multiplied, in accordance with the luminance of the corresponding pixel.

Abstract: The signal processing unit 20 includes a pixel index value calculating unit that calculates a pixel index value based on an input signal for each pixel 48, a chunk determining unit that performs consecutiveness determination which determines whether or not a pixel 48, having a pixel index value between an upper boundary value and a lower boundary value is consecutive from the starting pixel, and determines consecutive pixels as a chunk, a chunk index value calculating unit that calculates a chunk index value, a region index value calculating unit that calculates a region index value of a target region, and a light irradiation amount deciding unit that compares the chunk index value with the region index value, and decides the irradiation amount of the light of the light source unit in the target region based on the one by which the irradiation amount of the light is increased.

Abstract: According to one embodiment, when displaying an image on a display panel, projecting an image which is displayed on the display panel, inclining the image which is projected from the display panel at a predetermined angle of bend, and reflecting the image which is projected from the display panel via a prism and guiding the image to a projection surface, a display device corrects input picture image of the prism based on characteristics contrary to the chromatic aberration characteristics of the prism.

Abstract: According to an aspect, a display apparatus includes: an image display panel that displays an image thereon; a planar light source that includes a plurality of light sources and irradiates a plurality of divided areas of the image display panel with light from the back side of the image display panel; and a signal processor that drives the light sources individually based on input signals of the image to control brightness of the individual divided areas. The signal processor performs image display on the image display panel using output signals obtained by lowering brightness of a dark region in the image represented by the input signals.

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device that includes a display area provided with n1 pixels and that is irradiated with light from the light sources; a light source controller controlling an operation of the light sources; and a display controller controlling an output gradation value of part or all of the pixels. The display area includes a plurality of partial areas, the partial areas corresponding to the light sources on a one-to-one basis. The light source controller determines the amount of light emitted from each light source corresponding to a corresponding one of the partial areas based on luminance of light required for the corresponding partial area. The display controller performs first correction and second correction when the amounts of light emitted from two light sources corresponding to two adjacent partial areas are different.

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device irradiated with light from the light sources; and a controller. The display area includes a plurality of partial areas corresponding to the light sources on a one-to-one basis. Each of the partial areas includes a first area and a second area, the first area being irradiated with light from a first light source that corresponds thereto, and the second area being irradiated with light from the first light source and a second light source adjacent to the first light source. The controller controls an operation of the first light source based on whether the first area requires the light from the first light source and whether the second area obtains light required for display output by receiving the light from the second light source.

Abstract: An image display device includes a first pixel data calculator calculating first pixel data for a pixel of attention based on a first error value for a pixel adjacent thereto in the same error diffusion block; a second pixel data calculator calculating second pixel data for the pixel of attention based on a corrected error value for the adjacent pixel; a first error value calculator calculating the first error value based on the first pixel data; a second error value calculator calculating a second error value based on the second pixel data; and a corrected error value calculator calculating the corrected error value by correcting the second error value in a direction in which the second error value approaches the first error value in accordance with whether the pixel of attention is located within a predetermined range from a border among a plurality of error diffusion blocks.

Abstract: According to one embodiment, a light source device includes a plurality of light emitting elements including at least first and second light emitting elements, lightguide, first circuit, second circuit, and controller. The lightguide includes a first surface on which light from light emitting elements is incident and a second surface through which the light exits. The first circuit connects light emitting elements in series. The second circuit can bypass each of light emitting elements. The controller turns on light emitting elements using the first circuit if light emitting elements function normally, and if one of light emitting elements functions abnormally, the controller turns on the light emitting element functioning normally using the second circuit.

Abstract: According to an aspect, a display device includes an image display panel and a signal processing unit. The signal processing unit derives a generation signal for a fourth sub-pixel in each of pixels based on an input signal for a first sub-pixel, an input signal for a second sub-pixel, an input signal for a third sub-pixel, and an extension coefficient. The signal processing unit derives a correction value based on a hue of an input color corresponding to a color to be displayed based on the input signal for the first sub-pixel, the input signal for the second sub-pixel, and the input signal for the third sub-pixel. The signal processing unit derives the output signal for the fourth sub-pixel in each of the pixels based on the generation signal for the fourth sub-pixel and the correction value and outputs the output signal to the fourth sub-pixel.