Transparent Display Overlay for Vehicle Instrument Clusters
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Solution Overview
Problem
Drivers often need to consult a vehicle operation manual to understand indicator symbols and information displayed in modern automotive instrument cluster assemblies, which can be inconvenient and time-consuming, especially when stopped.
Innovation Solution
A transparent display overlay system is integrated into the instrument cluster assembly, featuring a transparent display layer connected to a protective cover using an optical adhesive, allowing vehicle information to be supplemented with specific indicator information displayed on top of the existing instruments, enabling drivers to view the instruments through the overlay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a transparent display overlay system is added to the instrument cluster assembly, then driver understanding of indicator symbols is improved, but device complexity increases
Solution Approach 1:
The patent merges the overlay display system with the existing instrument cluster assembly by integrating the transparent protective cover that serves dual purposes: as a protective element and as a substrate for the overlay display. The optical adhesive layer bonds the transparent display layer to the protective cover, creating a unified structure that provides both protection and enhanced information display without requiring separate complex systems.
Solution Approach 2:
The patent introduces an optical adhesive layer as an intermediary element between the transparent protective cover and the transparent display layer. This optical adhesive serves as a mediator that optically couples the two components while maintaining transparency, allowing driver information to pass through clearly while structurally bonding the display overlay to the protective cover.
2Loss of information
If a transparent display layer is added to overlay the instrument cluster, then specific indicator information is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the instrument cluster assembly into distinct functional layers: the base instrument cluster, the transparent protective cover, the optical adhesive layer, and the transparent display layer. This segmentation allows each component to be manufactured and prepared separately, then assembled in a controlled manner, reducing overall manufacturing complexity while enabling the addition of specific indicator information through the overlay display.
3Device complexity
If the transparent display layer is connected directly to the protective cover, then device complexity is reduced, but optical quality may deteriorate
Solution Approach 1:
The optical adhesive layer acts as an intermediary optical element that maintains high optical quality while connecting the transparent display layer to the protective cover. This specialized adhesive is designed to be optically clear and has refractive index properties that minimize optical distortion, allowing the displayed image to maintain high illumination intensity and clarity while structurally bonding the components together.
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
Enhances driver understanding by providing clear, supplementary information without obstructing the view of the underlying vehicle instruments, improving convenience and safety by allowing immediate interpretation of indicator symbols and settings without manual consultation.
Implementation Method 1
A transparent display overlay system includes an overlay display comprising a transparent display layer connected to the transparent protective cover by an optical adhesive layer
Data Source
AI summary
An instrument cluster assembly for a vehicle includes a vehicle instrument that is viewable by an occupant of the vehicle. A transparent protective cover covers the vehicle instrument such that the vehicle instrument is viewable by the occupant through the transparent protective cover. A transparent display overlay system includes an overlay display comprising a transparent display layer connected to the transparent protective cover by an optical adhesive layer. A display controller displays an image on the transparent display layer based on vehicle information. The vehicle instrument is viewable by the occupant through the transparent protective cover and the transparent display layer adjacent the image.