Vehicle Display Device Segmentation for Driver Visual Burden Reduction
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Solution Overview
Problem
Full-graphic meter devices with large displays overwhelm drivers with excessive information, causing visual recognition burdens and increased watching time, especially at night, as they reduce brightness to conserve power and improve visibility but fail to address the driver's need for quick information access.
Innovation Solution
A display device for vehicles with a control unit that switches between normal and simple display modes, where the first and second areas are set to non-display states in simple mode, while the third area displays essential digital speed information, reducing visual clutter and maintaining visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the entire display area is used to show comprehensive vehicle information, then the information display capability is improved, but the visual recognition burden on the driver increases and watching time increases
Solution Approach 1:
The display area is segmented into multiple regions (first area, second area, third area) with different display modes. The third area displays simplified digital speed information that is easily recognizable, while other areas can display more detailed information. This segmentation allows the driver to quickly obtain essential information from the third area without being overwhelmed by comprehensive information in other areas, thereby reducing watching time while maintaining information display capability.
Solution Approach 2:
Different regions of the display are assigned different display qualities and information densities. The third area is optimized for quick visual recognition with simple digital speed information, while other areas can display more complex vehicle information. This local quality differentiation ensures that the most critical information is immediately accessible, reducing the driver's visual recognition burden and watching time.
2Object-affected harmful factors
If display brightness is reduced during night time, then the driver's comfort is improved, but the visibility of the speedometer and essential information decreases
Solution Approach 1:
Different regions of the display can have different brightness levels and display characteristics. The third area, which displays essential speed information, can maintain higher visibility or use display modes that are optimized for night driving, while other areas can be dimmed more aggressively. This local quality approach allows the system to reduce overall brightness for driver comfort while preserving the visibility of critical information.
3Loss of information
If comprehensive vehicle information is displayed including maps and status indications, then the information completeness is improved, but the visual recognition burden on the driver increases
Solution Approach 1:
The display is segmented into regions with different information densities. The third area displays simplified, essential information (digital speed) that is easy to recognize quickly, while other areas (first and second areas) can display more comprehensive information including maps and status indications. This segmentation allows complete information to be available while keeping the visual recognition burden low in the critical third area.
Solution Approach 2:
Instead of displaying comprehensive information uniformly across the entire display, the system inverts the approach by displaying minimal essential information in the most visible third area, and placing comprehensive but less critical information in other areas. This inversion prioritizes visual recognition efficiency while maintaining information completeness.
Data Source
AI summary
A display device for vehicle capable of reducing visual recognition burden on a driver and shortening watching time is provided. The display device for vehicle includes a liquid crystal display including a first area, a second area and a third area as display areas, and a CPU configured to switch the liquid crystal display between a normal display mode and a simple display mode. The CPU is configured to, in the normal display mode, make the first area, the second area and the third area to display vehicle information, and in the simple display mode, put the first area and the second area in a non-displayed state and make only the third area to display in digital indication at least speed information among the vehicle information.