Calsonic Kansei Corp showcased a head-up display with an LCD panel as a reference exhibit at the 40th Tokyo Motor Show 2007, which opened for news reporters Oct 24, 2007 (It will be open to the public from Oct 27 to Nov 11).
The display will show vehicle speeds, warnings about pedestrians, traffic regulations including speed limits and arrows for route guidance on the lower part of a front window. The company showed those signals by using movies of driving in an urban area, on an express highway and a dark road at night.
"It's easy to notice those signals because drivers who are looking at the outside through a front window do not have to change the direction of eyes much," Calsonic Kansei's staffer said, explaining the advantage of the head-up display.
The signals displayed on the front window are limited to minimum necessary information for safe driving so that they do not confuse drivers, he said. When the head-up display is equipped in a car, it will probably be used to show warnings, traffic regulations, arrows for route guidance and so forth while an instrument panel is also used.
Furthermore, warning signals were elaborated too. For example, when a pedestrian is detected ahead of the vehicle on the right, a warning about it appears on the right side of the display – and vice versa.
"It does not only display warning images but enables drivers to notice them intuitively," Calsonic Kansei's staffer said.
The head-up display has a 250 × 40-pixel monochrome LCD panel. White LEDs are used as backlights, which project images on the LCD panel to the front window. The display size is 128 × 20mm. The dimension of the head-up display module is 150 × 150 × 40mm.