Vehicle Display Combiner Layout to Reduce Opening Reflections
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Solution Overview
Problem
Vehicle display devices with combiners suffer from designability issues due to reflection of the opening surrounding the image display area, which affects the aesthetic appeal and user experience.
Innovation Solution
A vehicle display device design featuring an upper display area, a lower display area, a combiner, a transparent cover, a panel member with a through hole, and a mask part with light-shielding properties, where the through hole has a widened portion and the mask part is positioned to minimize reflections and enhance designability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the opening is made larger to accommodate the lower display area, then the display functionality is improved, but the reflection of the opening in the combiner increases, deteriorating designability
Solution Approach 1:
The patent applies local quality by making the mask part transparent in specific areas and opaque in other areas. The transparent portion allows display light to pass through while the opaque portion blocks reflections from the opening, creating different optical properties in different locations of the same component to simultaneously achieve display functionality and aesthetic quality
Solution Approach 2:
The mask part serves as an intermediary element positioned between the opening and the combiner. It mediates the conflict by selectively transmitting and blocking light, allowing the opening to remain large for display functionality while preventing unwanted reflections from reaching the combiner, thus protecting the aesthetic quality
2Ease of manufacture
If the through hole shape is modified to reduce reflections, then designability is improved, but the light transmission area may be reduced, affecting display brightness
Solution Approach 1:
The through hole is designed with different properties in different regions: the enlarged portion provides structural support and controls reflection patterns, while the light transmission area maintains sufficient size for adequate brightness. This local differentiation allows the hole shape to be optimized for aesthetics without compromising light transmission
Solution Approach 2:
The mask part incorporates transparent and opaque regions that effectively change the optical properties of different areas. The transparent regions allow maximum light transmission for brightness, while the opaque regions control reflections, creating a visual appearance that improves designability without reducing overall light transmission
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 solution effectively reduces the reflection of the instrument panel surface and external light, improving the designability and user experience by creating a sense of depth and reducing discomfort caused by reflections, while maintaining a harmonious visual alignment with the combiner.
Implementation Method 1
a reflective member disposed inside the accommodating part, facing the combiner through the through hole, and reflecting display light of the lower display area toward the combiner
Implementation Method 2
a mask part having a light-shielding property and disposed on the cover
Data Source
AI summary
A vehicle display device includes an image display device including an upper display area and a lower display area, a hood part, a combiner disposed on a side of the eye point with respect to the upper display area, an accommodating part that has an opening facing upward, a transparent cover, a panel member having a through hole facing the cover, a reflective member disposed inside the accommodating part, and a mask part disposed on the cover. The through hole has a shape with a widened portion expanding outward from an area through which the display light traveling toward the eye point passes, and the mask part is provided in an area of the cover facing the widened portion.