Abstract: Provided is a liquid crystal display device which is capable of eliminating a non-display region at a peripheral edge of a display screen, and displaying an image on the entire surface thereof. A backlight unit (22) emits parallel rays. The liquid crystal panel (24) transmits the parallel ray as a unit parallel ray in pixel unit, thereby forming an original image. An image enlarging panel (26) is an optical element having a flat-plate shape. The image enlarging panel (26) causes the unit parallel ray of each pixel to obliquely travel by refraction to shift a position of the unit parallel ray in a flat-plate plane, to thereby forms a display image enlarged the original image. A viewing angle enlarging panel (28) expands an angular distribution of the entering unit parallel ray from the image enlarging panel (26), thereby enlarging a viewing angle of the display image.

Abstract: A light source section provided in a backlight unit has a smaller width in a direction perpendicular to a length direction of the light source section than a width in the same direction of the liquid crystal panel. A plurality of LED modules are arranged along the length direction of the light source section. The LED modules are respectively assigned to areas of the liquid crystal panel, which are extended in the width direction of the light source section. Lenses are respectively disposed over the LED modules and expand light toward the areas. A control device controls each of the plurality of light sources separately or each of groups into which the plurality of light sources are divided, separately. Accordingly, it is possible to improve a contrast of a display screen, while reducing the number of light sources.

Abstract: In a direct type backlight device of a liquid crystal display device, a light guide plate is used obtain a uniform in-plane distribution of light emission intensity. A reflective sheet (62) having an opening portion is laminated on a front surface of an LED substrate (60), and an LED element (74) is accommodated inside the opening portion. A light guide plate (64) is stacked on the reflective sheet (62). On a front surface of the light guide plate (64), a white reflective film (90) is formed in a non-total reflection region, which is positioned to oppose the LED element (74) and in which an incident angle of light emitted from the LED element (74) to the front surface is smaller than a critical angle. On a rear surface of the light guide plate (64), a pattern made of a white reflective film (92) is formed.

Abstract: Provided is a liquid crystal display device which is capable of eliminating a non-display region at a peripheral edge of a display screen, and displaying an image on the entire surface thereof. A backlight unit (22) emits parallel rays. The liquid crystal panel (24) transmits the parallel ray as a unit parallel ray in pixel unit, thereby forming an original image. An image enlarging panel (26) is an optical element having a flat-plate shape. The image enlarging panel (26) causes the unit parallel ray of each pixel to obliquely travel by refraction to shift a position of the unit parallel ray in a flat-plate plane, to thereby forms a display image enlarged the original image. A viewing angle enlarging panel (28) expands an angular distribution of the entering unit parallel ray from the image enlarging panel (26), thereby enlarging a viewing angle of the display image.

Abstract: A display has light emitting elements, a first driver, a power source, and a second driver. Each light emitting element includes “n” emission layers formed one over another to form a color dot in each pixel. The first driver drives the emission layers to emit light or no light. The power source passes a current through the first driver to the light emitting element. The second driver individually weights the n emission layers and makes the emission layers emit light so that each dot may express a gradation level.

Abstract: In a direct type backlight device of a liquid crystal display device, a light guide plate is used obtain a uniform in-plane distribution of light emission intensity. A reflective sheet (62) having an opening portion is laminated on a front surface of an LED substrate (60), and an LED element (74) is accommodated inside the opening portion. A light guide plate (64) is stacked on the reflective sheet (62). On a front surface of the light guide plate (64), a white reflective film (90) is formed in a non-total reflection region, which is positioned to oppose the LED element (74) and in which an incident angle of light emitted from the LED element (74) to the front surface is smaller than a critical angle. On a rear surface of the light guide plate (64), a pattern made of a white reflective film (92) is formed.

Abstract: A light source section provided in a backlight unit has a smaller width in a direction perpendicular to a length direction of the light source section than a width in the same direction of the liquid crystal panel. A plurality of LED modules are arranged along the length direction of the light source section. The LED modules are respectively assigned to areas of the liquid crystal panel, which are extended in the width direction of the light source section. Lenses are respectively disposed over the LED modules and expand light toward the areas. A control device controls each of the plurality of light sources separately or each of groups into which the plurality of light sources are divided, separately. Accordingly, it is possible to improve a contrast of a display screen, while reducing the number of light sources.

Abstract: A backlight device is divided into multiple regions, and has a configuration in which light emitted from a light source of each of the regions is allowed to leak to other regions. A maximum gradation detector detects a maximum gradation of a regional image signal displayed on each of the regions of the liquid crystal panel. An image gain calculator obtains a gain to be multiplied to each regional image signal. An emission luminance calculator obtains an emission luminance of light to be emitted by each light source, by using an operation expression according to the emission luminance of light to be emitted by the backlight device. At this time, if the emission luminance takes a negative value as a result of calculation, the emission luminance calculator makes a correction so that the emission luminance can take a value equal to or greater than 0.

Abstract: High quality images on liquid crystal panel can be obtained alleviating variations of the brightness and color among regions, in which backlight is divided when emission luminance of the backlight is controlled in each region based on image signal. A backlight device is divided into multiple regions, and has a configuration in which light emitted from a light source of each of the regions is allowed to leak to other regions. A maximum gradation detector detects a maximum gradation of a regional image signal displayed on each of the regions of the liquid crystal panel. An image gain calculator obtains a gain to be multiplied to each regional image signal by using luminance bitmap held by luminance bitmap memory. An emission luminance calculator obtains an emission luminance of light to be emitted by each light source.

Abstract: A liquid crystal panel displays an image from image signals. A backlight device disposed on the back side of the liquid crystal panel, and divided into a plurality of regions. The backlight device is configured to allow light emitted from the light source of each of the regions to leak to nearby regions. A light emission luminance calculator obtains a light emission luminance by using, as nearby regions, a group of regions from the regions in the backlight device and at least two virtual regions provided respectively at opposite ends of the group of regions.

Abstract: A display has light emitting elements, a first driver, a power source, and a second driver. Each light emitting element includes “n” emission layers formed one over another to form a color dot in each pixel. The first driver drives the emission layers to emit light or no light. The power source passes a current through the first driver to the light emitting element. The second driver individually weights the n emission layers and makes the emission layers emit light so that each dot may express a gradation level.

Abstract: A display has light emitting elements, a first driver, a power source, and a second driver. Each light emitting element includes “n” emission layers formed one over another to form a color dot in each pixel. The first driver drives the emission layers to emit light or no light. The power source passes a current through the first driver to the light emitting element. The second driver individually weights the n emission layers and makes the emission layers emit light so that each dot may express a gradation level.

Abstract: High quality images on liquid crystal panel can be obtained alleviating variations of the brightness and color among regions, in which backlight is divided when emission luminance of the backlight is controlled in each region based on image signal. A backlight device is divided into multiple regions, and has a configuration in which light emitted from a light source of each of the regions is allowed to leak to other regions. A maximum gradation detector detects a maximum gradation of a regional image signal displayed on each of the regions of the liquid crystal panel. An image gain calculator obtains a gain to be multiplied to each regional image signal by using luminance bitmap held by luminance bitmap memory. An emission luminance calculator obtains an emission luminance of light to be emitted by each light source.

Abstract: A backlight device is divided into multiple regions, and has a configuration in which light emitted from a light source of each of the regions is allowed to leak to other regions. A maximum gradation detector detects a maximum gradation of a regional image signal displayed on each of the regions of the liquid crystal panel. An image gain calculator obtains a gain to be multiplied to each regional image signal. An emission luminance calculator obtains an emission luminance of light to be emitted by each light source, by using an operation expression according to the emission luminance of light to be emitted by the backlight device. At this time, if the emission luminance takes a negative value as a result of calculation, the emission luminance calculator makes a correction so that the emission luminance can take a value equal to or greater than 0.

Abstract: A display apparatus divides each frame period of an input image signal into a plurality of subframes and selects the subframes according to a gray-scale level of the input signal, to display a gray-scale image. The display apparatus alternately employs two sets of tables having different gray-scale-level input/output characteristics, to move locations to cause false contours frame by frame, thereby minimizing false contours.

Abstract: A display has light emitting elements, a first driver, a power source, and a second driver. Each light emitting element includes “n” emission layers formed one over another to form a color dot in each pixel. The first driver drives the emission layers to emit light or no light. The power source passes a current through the first driver to the light emitting element. The second driver individually weights the n emission layers and makes the emission layers emit light so that each dot may express a gradation level.

Abstract: A display apparatus divides each frame period of an input image signal into a plurality of subframes and selects the subframes according to a gray-scale level of the input signal, to display a gray-scale image. The display apparatus alternately employs two sets of tables having different gray-scale-level input/output characteristics, to move locations to cause false contours frame by frame, thereby minimizing false contours.