| 摘要 |
A car-mounted display device improves the visibility of a display image from the driver's seat and the front passenger's seat and prevents the display image from being reflected in side windows, and a car navigation system uses the car-mounted display device as a monitor. In a case in which a liquid crystal display device is disposed at the center of a dashboard, the visibility at the driver's seat and the front passenger's seat is optimized by setting the change in luminance or contrast to be approximately 20 dB (10x) or less within an angle of approximately 40 DEG on the right and left sides of the center. Moreover, the luminance or contrast is set to decrease by -20 dB or more beyond approximately 40 DEG on the right and left sides of the center. <IMAGE> |
