A display device and a signal processing device for maximum utilization of a color gamut that a display panel can express. A display device includes a display section in which display pixels that each include a first subpixel, a second subpixel, and a third subpixel that emit three-basic-color light and a fourth subpixel that emits non-basic-color light are arranged two-dimensionally; a first signal processing section that expands a video signal being input and corresponding to the basic-color light and adapts the video signal to a color gamut that the display section can express; and a second signal processing section that converts an expanded video signal being the video signal having been expanded into a first signal, a second signal, and a third signal that correspond to the basic-color light and a fourth signal that corresponds to the non-basic-color light, and outputs the signals to the display section.

An image display device 1 includes an image data conversion unit 10 that performs conversion processing of converting input image data D1 into driving image data D2 for each pixel, and a display unit 20 that displays a plurality of subframes based on the driving image data D2, in one frame period. In the conversion processing in the image data conversion unit 10, for each pixel, the hue and the saturation of the input image data D1 and the hue and the saturation of the driving image data D2 in an HSV color space are held to be respectively equal to each other. The image data conversion unit 10 computes a coefficient Ks used in the conversion processing, and performs the conversion processing using the coefficient Ks. The coefficient Ks varies depending on a brightness V and has a value causing a brightness after the conversion processing to increase as the brightness V becomes greater if the saturations S are equal to each other. The difference between a minimum value and a maximum value of the coefficient Ks is set to decrease as the brightness V becomes smaller. Thus, an occurrence of noise at a low-luminance portion of a display image is suppressed.

An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.

An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.

An image display device 1 includes an image data conversion unit 10 that performs conversion processing of converting input image data D1 into driving image data D2 for each pixel, and a display unit 20 that displays a plurality of subframes based on the driving image data D2, in one frame period. In the conversion processing in the image data conversion unit 10, for each pixel, the hue and the saturation of the input image data D1 and the hue and the saturation of the driving image data D2 in an HSV color space are held to be respectively equal to each other. The image data conversion unit 10 computes a coefficient Ks used in the conversion processing, and performs the conversion processing using the coefficient Ks. The coefficient Ks varies depending on a brightness V and has a value causing a brightness after the conversion processing to increase as the brightness V becomes greater if the saturations S are equal to each other. The difference between a minimum value and a maximum value of the coefficient Ks is set to decrease as the brightness V becomes smaller. Thus, an occurrence of noise at a low-luminance portion of a display image is suppressed.

An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.

An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.

An apparatus and method for compensating for color separation of an image in a holographic head-up display (HUD), caused by a change in characteristics such as a temperature or wavelength of a laser projector. An apparatus (200) for compensating for color separation of an image in a HUD includes a GPU (100); a video signal inputter (110); a temperature sensor (120); a controller (130); a memory (135); a panel driving unit (140) for outputting an image to a panel (160); a laser diode driving unit (150) for driving R, G, and B laser diodes (151), (152), and (153); a lens (70), and a screen (180). Accordingly, an image, the quality of which is degraded due to color separation of an image, may be improved.

An apparatus and method for compensating for color separation of an image in a holographic head-up display (HUD), caused by a change in characteristics such as a temperature or wavelength of a laser projector. An apparatus (200) for compensating for color separation of an image in a HUD includes a GPU (100); a video signal inputter (110); a temperature sensor (120); a controller (130); a memory (135); a panel driving unit (140) for outputting an image to a panel (160); a laser diode driving unit (150) for driving R, G, and B laser diodes (151), (152), and (153); a lens (70), and a screen (180). Accordingly, an image, the quality of which is degraded due to color separation of an image, may be improved.

An image display device includes an image data conversion unit that performs conversion processing of input image data and a display unit that displays a plurality of subframes, in one frame period. In the image data conversion unit, the conversion processing is performed in a manner that, for each pixel, a hue and a saturation of the input image data and a hue and a saturation of driving image data in an HSV color space are held to be respectively equal to each other, color components of the driving image data are set to have the same value when the saturation of the input image data is equal to the minimum saturation, and when the saturation of the input image data is equal to the maximum saturation, the color components of the input image data are multiplied by the same value, and then the input image data is compressed.