Full-color display device
AssigneeDenso Corporation
InventorRyoichi Nishikawa
Life of this patent
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Abstract
A full-color liquid crystal display device (TFT-LCD) installed in a monitor system for a vehicle includes a liquid crystal display (LCD), an LCD electronic control unit (ECU). The LCD has a backlight unit that includes white LEDs and red LEDs. The LCD ECU performs a display control process for selectively displaying navigation information, a tachometer image, or other information. A warning sign is displayed in a single color red in a display area of the LCD if required. The LCD ECU selects information to display and determines whether the information is a warning. If the information is a warning, the white LEDs and the red LEDs are turned on for displaying a warning sign indicative of the warning at high intensity so that the sign is easily recognized. If the information is not a warning, only the white LEDs are turned on.
Claims17
A full-color display device comprising:
- a display panel that includes a display region consisting of a plurality of pixels;
- a light source unit that is arranged behind the display panel and emits light including components of three primary colors of light, which are red, green, blue, to the display panel;
- a display control means that controls intensity of the components of three primary colors of light that is emitted from the light source unit to a front surface of the display for displaying a full-color image in the display region, wherein
- the display control means controls intensity of light emitted from the light source unit;
- the intensity is set higher for displaying an image in a single color similar to one of the three primary colors in a predetermined region that includes at least a part of the display region than for displaying an image in a mixed color;
- the intensity is set lower than a maximum intensity of light emitted from the light source unit to the predetermined region when an image is displayed in a mixed color in the predetermined region;
- and
- the intensity is set higher than the set intensity when an image is displayed in a single color in the predetermined region.
A full-color display device comprising:
- a display panel that includes a display region consisting of a plurality of pixels;
- a light source unit that is arranged behind the display panel and emits light including components of three primary colors of light, which are red, green, blue, to the display panel;
- a display control means that controls intensity of the components of three primary colors of light that is emitted from the light source unit to a front surface of the display for displaying a full-color image in the display region, wherein
- the display control means controls intensity of light emitted from the light source unit;
- the intensity is set higher for displaying an image in a single color similar to one of the three primary colors in a predetermined region that includes at least a part of the display region than for displaying an image in a mixed color;
- the light source unit comprises a plurality of light sources for the predetermined region;
- the display control means turns on some of the light sources for displaying an image in a mixed color;
- and
- the display control means turns on more light sources in addition to the light sources turned off for displaying the image in a mixed color when displaying an image in a single color.
A full-color display device comprising:
- a display panel that includes a display region consisting of a plurality of pixels;
- a plurality of light emitting units that is arranged for each pixel and emits light including three primary color components;
- and
- a display control means that controls intensity of the three primary color components of each light emitting unit for displaying a full-color image in the display region, wherein
- the display control means controls intensity of light emitted from the light emitting unit,
- the intensity for displaying an image in a mixed color in a predetermined region is set lower than a maximum intensity of the light, where the predetermined region includes at least a part of the display region, and
- the intensity for displaying the image in a single color is set higher than the intensity for displaying an image in a mixed color.
Dependencies are inferred from the claim text.