3D Head-Up Display for Unified Speed and Gear Visualization
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Solution Overview
Problem
Existing head-up display systems in vehicles do not effectively project vehicle speed and engine rotation speed in a unified and visually engaging manner, lacking a comprehensive design that considers the dynamic changes in gear positions and clutch engagement, which can impact driving safety and user experience.
Innovation Solution
A display device, three-dimensional display device, and head-up display system that combines engine rotation speed and vehicle speed images on a display panel, using an optical element to create parallax for a stereoscopic effect, and a controller to switch images based on gear position, allowing for a unified and dynamic display of speed information, enhancing visibility and realism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple separate displays are used for engine rotation speed and vehicle speed, then each parameter can be displayed independently, but the overall visibility and user engagement are reduced
Solution Approach 1:
The patent combines multiple speed-related displays (engine rotation speed, vehicle speed, shift position) into a single integrated display unit. This merging of previously separate display functions into one unified interface improves overall visibility and user engagement while reducing the complexity of having multiple separate display units.
2Reliability
If static display images are used, then the display is simple to implement, but the realism and user engagement are reduced
Solution Approach 1:
The patent implements dynamic display images that change based on vehicle operating conditions such as shift position and clutch engagement. Instead of static images, the display dynamically adjusts visual representations to reflect real-time vehicle state, enhancing realism and user engagement while managing complexity through condition-based switching logic.
3Loss of information
If the display does not reflect gear position changes, then the display is simpler, but the information completeness for driving safety is reduced
Solution Approach 1:
The patent incorporates feedback mechanisms that detect gear position changes and clutch engagement states, then use this information to dynamically adjust the display content. The system continuously monitors transmission state and provides visual feedback to the driver, ensuring complete information delivery for driving safety while managing complexity through integrated sensor-display connectivity.
4Adaptability or versatility
If separate displays are used for left and right eye viewing, then stereoscopic effect is achieved, but the device complexity increases
Solution Approach 1:
The patent adds a stereoscopic dimension to the display by providing different images for left and right eye viewing through optical elements. This dimensional enhancement creates a three-dimensional effect that improves adaptability and user engagement, while the optical element configuration manages the complexity of implementing separate viewing paths for each eye.
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
The system provides improved driving safety by offering instant and unified display of essential information, enhancing user engagement by visually representing transmission and clutch states, and offering a realistic driving experience through dynamic and stereoscopic visualization of speed and gear changes.
Implementation Method 1
an optical element configured so as to define a direction of image light emitted from the subpixels, and propagate image light emitted from the subpixels in a first region, toward a position of a left eye of a user and propagate image light emitted from the subpixels in a second region different from the first region, toward a position of a right eye of the user
Data Source
AI summary
A display device of the disclosure is a display device to be mounted on a vehicle, and includes a display panel, a first input unit, a second input unit, a third input unit, and a controller. The first input unit is configured so as to acquire an engine rotation speed. The second input unit is configured so as to acquire a vehicle speed. The third input unit is configured so as to acquire a shift position of a transmission of a vehicle. The controller is configured so that a first image representing the engine rotation speed and one or more second images representing the vehicle speed are combined and a combined image is displayed on the display panel. The controller is configured so that switching of the second images is carried out based on the shift position.