Abstract: An in-vehicle operation apparatus has an operation switch, a candidate selection operation unit, and a command assignment operation unit, all of which are operable by a user. The operation switch may control multiple in-vehicle devices based on a desired command assigned thereto. In particular, the candidate selection operation unit selects a plurality of candidate commands from among a plurality of commands respectively for in-vehicle devices. The command assignment operation unit selects and assigns the desired command from among the plurality of candidate commands to the operation switch. Accordingly, the operation switch controls the in-vehicle device associated with the desired command. Thus, the apparatus reduces the amount of operation switches required and allows the user to easily select and assign a command to the operation switch for controlling a desired in-vehicle device.

Abstract: A signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference ?u?v?=((u??u60?)2+(v??v60?)2) is 0.03 or less, the color difference ?u?v? being defined by CIE1976 chromaticity coordinates (u?, v?) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60?, v60?) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

Abstract: There is provided an image display device capable of suppressing the occurrence of a color shift while ensuring a sufficient color reproduction range. An in-area maximum luminance obtaining unit (151) divides an input image (31) into a plurality of areas and obtains, for each of RGB colors, a maximum luminance value (34) in each area. A weighting coefficient calculating unit (152) obtains the maximum luminance values (34) for the respective RGB colors for all of the areas, and determines weighting coefficients (35) which are required upon an LED luminance adjustment process, based on an mean value of the maximum luminances values (34) for each color. An LED luminance adjusting unit (153) adjusts the luminances of respective RGB color LEDs in each area to suppress the occurrence of a color shift, based on the maximum luminance values (34) obtained by the in-area maximum luminance obtaining unit (151) and the weighting coefficients (35) determined by the weighting coefficient calculating unit (152).

Abstract: A signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference ?u?v?=((u??u60?)2+(v??v60?)2) is 0.03 or less, the color difference ?u?v? being defined by CIE1976 chromaticity coordinates (u?, v?) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60?, v60?) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

Abstract: In one embodiment of the present invention, a signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference ?u?v?=((u??u60?)2+(v??v60?)2) is 0.

Abstract: There is provided an image display device capable of suppressing the occurrence of a color shift while ensuring a sufficient color reproduction range. An in-area maximum luminance obtaining unit (151) divides an input image (31) into a plurality of areas and obtains, for each of RGB colors, a maximum luminance value (34) in each area. A weighting coefficient calculating unit (152) obtains the maximum luminance values (34) for the respective RGB colors for all of the areas, and determines weighting coefficients (35) which are required upon an LED luminance adjustment process, based on an mean value of the maximum luminances values (34) for each color. An LED luminance adjusting unit (153) adjusts the luminances of respective RGB color LEDs in each area to suppress the occurrence of a color shift, based on the maximum luminance values (34) obtained by the in-area maximum luminance obtaining unit (151) and the weighting coefficients (35) determined by the weighting coefficient calculating unit (152).

Abstract: It is an object of the present invention to provide a display device that can improve the color reproductivity on a displayed image and improve the display quality. A liquid crystal display device (1) is provided with a backlight device (3) and a liquid crystal panel (2) configured to have capability of color display of information by using illumination light from the backlight device (3). The backlight device (3) has a plurality of illumination areas (Ha) with respect to a plurality of display areas provided on the liquid crystal panel (2), and light-emitting diodes (light sources) of RGB (8r, 8g, 8b) mixable with white light are provided for each illumination area (Ha).

Abstract: It is an object of the present invention to provide a liquid crystal display device with high color reproduction ability even when an area active backlight is driven. A liquid crystal display device (1) of the present invention drives a liquid crystal panel (2) and a backlight device (3), respectively, using a video signal input from outside. In the backlight device (3), a plurality of illuminating areas (Ha) are set on LED substrates (7) with respect to a plurality of display areas provided on the liquid crystal panel (2), and area active backlight drive is performed, which lights up light-emitting diodes (8) in the unit of the illuminating areas.

Abstract: A liquid crystal panel 10 has color filters for RGB colors, i.e., three colors, and a backlight 20 includes a plurality of LEDs for each of four colors (RGB and cyan) independently controllable for luminance. A backlight data processing portion 33 divides an output signal from a color signal correction portion 32 into a plurality of areas and calculates luminance values for LEDs corresponding to each area based on a gradation in that area, thereby obtaining backlight data for four or more colors for use in driving the backlight 20. A video data processing portion 34 performs color correction on an output signal from the color signal correction portion 32 while referencing the backlight data, thereby obtaining video data for three colors for use in driving the liquid crystal panel 10. Thus, color crosstalk can be prevented, thereby achieving a high-definition multi-primary color display and precise color reproduction.

Abstract: In one embodiment of the present invention, a signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference ?u?v?=((u??u60?)2+(v??v60?)2) is 0.

Abstract: A display element is configured as follows in order to prolong the display lifetime of an electro-optical element without inserting a resistance element or lowering the numerical aperture due to a change in layout. The display element includes an organic EL element, which is an electro-optical element, a power source line electrode, a scanning signal line electrode, a data signal line electrode, a common electrode, an auxiliary capacitance, a current control TFT for controlling the current flowing through the organic EL element, and a data voltage control TFT for controlling the timing at which current flows through the organic EL element. The conductive resistance of the current control TFT is set such that 0.1???7.0, where ?(=Vr/Vel) is a ratio of a voltage Vr applied across the current control TFT to a voltage Vel applied across the organic EL element. Thus, the speed of the temporal change of the luminance of the organic EL element is slowed down, and the display lifetime is prolonged.

Abstract: Each pixel includes: a first wiring for allowing a current to flow to an organic EL element; a first TFT element, provided in series to the organic EL element so as to be positioned in a path for allowing the current to flow from the first wiring, which has a control terminal for controlling conductance of the first TFT element; a second TFT element, provided in series to the organic EL element and the first TFT element so as to be positioned in the path, which has a control terminal for allowing/disallowing conduction; a capacitor which applies a voltage corresponding to stored electric charge to the control terminal of the first TFT element as a control voltage for controlling the conductance of the first TFT element; a third TFT element, provided in a path for supplying the electric charge to the capacitor, which has a control terminal for allowing/disallowing conduction, said third TFT element causing the capacitor to store the electric charge by disallowing conduction; a second wiring which applies a con

Abstract: A display element is configured as follows in order to prolong the display lifetime of an electro-optical element without inserting a resistance element or lowering the numerical aperture due to a change in layout. The display element includes an organic EL element, which is an electro-optical element, a power source line electrode, a scanning signal line electrode, a data signal line electrode, a common electrode, an auxiliary capacitance, a current control TFT for controlling the current flowing through the organic EL element, and a data voltage control TFT for controlling the timing at which current flows through the organic EL element. The conductive resistance of the current control TFT is set such that 0.1≦&bgr;≦7.0, where &bgr;(=Vr/Vel) is a ratio of a voltage Vr applied across the current control TFT to a voltage Vel applied across the organic EL element.