Dual-View Display With Parallax Backlighting for Multi-Occupant Data
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Solution Overview
Problem
Existing vehicle display systems struggle to efficiently provide different types of data to multiple occupants without increasing display size or complexity, particularly in vehicles with mobile components.
Innovation Solution
A dual view display system utilizing direct backlighting with addressable LED zones and twisted nematic LCD zones, controlled by a parallax barrier, allows for simultaneous display of two distinct images at different viewing angles, catering to different occupants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single display device is used to provide data to multiple occupants, then display space efficiency is improved, but the ability to provide different types of data to different occupants deteriorates
Solution Approach 1:
The display device is segmented into multiple independently controllable zones, where each zone can display different data types. This allows the display to be divided into driver-focused and passenger-focused sections, enabling customized information presentation for different occupants while using a single physical display unit.
Solution Approach 2:
Different regions of the display are assigned different functional qualities - the driver zone displays safety-critical and navigation information with high contrast and simplicity, while the passenger zone displays entertainment and secondary information. This local differentiation allows each occupant to receive optimized data without requiring separate displays.
2Adaptability or versatility
If multiple display devices are used to provide different data to multiple occupants, then data customization for different occupants is improved, but device complexity and space requirements deteriorate
Solution Approach 1:
Multiple display functions are merged into a single display device by implementing spatially separated zones that can be independently controlled. This consolidation reduces the number of physical displays needed while maintaining the ability to provide customized data to different occupants, thereby reducing overall system complexity.
Solution Approach 2:
The single display device is designed to perform multiple functions simultaneously - it serves as both a driver information display and a passenger entertainment display at the same time. This multi-functionality eliminates the need for separate dedicated displays for different occupants, reducing device complexity while maintaining adaptability.
3Illumination intensity
If display data is optimized for one occupant's viewing angle, then viewing quality for that occupant is improved, but visibility for other occupants deteriorates
Solution Approach 1:
The display is segmented into angular zones with different optical optimization characteristics. Each zone is optimized for a specific viewing angle range corresponding to a particular occupant's position, allowing driver-side data to be optimized for driver viewing while passenger-side data is optimized for passenger viewing angles simultaneously.
Solution Approach 2:
Different portions of the display have locally optimized viewing characteristics tailored to the specific occupant in that region. The driver zone has optical properties optimized for driver eye position and angle, while the passenger zone has different optical optimization, enabling each occupant to experience high viewing quality without compromising the other.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient use of display space by allowing two different types of data to be visible to different users from a single display, enhancing vehicle interior functionality and reducing computational resources.
Implementation Method 1
controlling a first LCD zone to be at a first transparency and controlling a second LCD zone to be non-transparent and generating a second image at a second viewing angle during a second time period
Implementation Method 2
controlling a first LCD zone to be at a first transparency and controlling a second LCD zone to be non-transparent
Implementation Method 3
energizing an LED zone to a first luminance... energizing the LED zone to a second luminance
Data Source
AI summary
A computer that includes a processor and a memory, the memory including instructions executable by the processor to provide direct backlighting to a display device by generating a first image at a first viewing angle during a first time period by energizing an LED zone to a first luminance, controlling a first LCD zone to be at a first transparency and controlling a second LCD zone to be non-transparent. A second image can be generated at a second viewing angle during a second time period by energizing the LED zone to a second luminance, controlling the first LCD zone to be non-transparent and controlling the second LCD zone to a second transparency. The first luminance can be transmitted through the first LCD zone disposed over the LED zone and directed at the first viewing angle by a parallax barrier when the first LCD zone is at the first transparency and the second luminance can be transmitted through the second LCD zone disposed over the LED zone and directed at a second viewing angle by the parallax barrier when the second LCD zone is at the second transparency.