Asymmetric Lens Offset for Vehicle Display Luminance
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Solution Overview
Problem
Conventional flat panel display apparatuses, such as those used in vehicle dashboards, experience reduced luminance when viewed from angles other than the front, which can impair visibility for drivers and passengers.
Innovation Solution
A display apparatus design featuring a substrate with a display device and a convex lens, where the center of the display device and the center of the lens are spaced apart by a predetermined distance, and the display device is formed in an asymmetrical shape, such as a trapezoid, to enhance luminance in non-front viewing directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display device uses a conventional symmetrical configuration with the lens centered, then the manufacturing is simple and alignment is easy, but the luminance is reduced in non-front viewing directions such as above the horizontal plane
Solution Approach 1:
The patent applies asymmetry by intentionally offsetting the lens center from the display device center by a predetermined distance. This asymmetric configuration redirects the light emission pattern toward non-front viewing directions (specifically above the horizontal plane), thereby improving luminance in these directions while accepting increased alignment complexity as a trade-off.
2Ease of operation
If the display device is configured for front viewing optimization, then the manufacturing is straightforward, but the visibility for drivers and passengers viewing from above the horizontal plane is impaired
Solution Approach 1:
The asymmetric offset configuration of the lens relative to the display device shifts the light distribution pattern to enhance visibility in non-front directions (above the horizontal plane). This ensures reliable visibility for drivers and passengers while maintaining straightforward manufacturing processes.
3Illumination intensity
If the lens center is offset from the display device center by a predetermined distance, then the luminance is improved in specific viewing directions, but the alignment precision during manufacturing becomes more difficult
Solution Approach 1:
The patent deliberately introduces asymmetry by offsetting the lens center from the display device center by a predetermined distance. This asymmetric arrangement optimizes luminance in target viewing directions (above the horizontal plane) while establishing a new alignment reference that accounts for the offset distance, thereby managing manufacturing precision requirements.
4Device complexity
If the display device uses a symmetrical configuration, then the structural design is simple, but the light distribution is not optimized for non-front viewing angles
Solution Approach 1:
The patent replaces the symmetrical configuration with an asymmetric one by offsetting the lens center from the display device center. This structural asymmetry optimizes light distribution toward non-front viewing directions, improving luminance in these directions while accepting increased structural design complexity as a necessary trade-off.
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
This configuration significantly improves luminance in specific viewing directions, particularly above the horizontal plane, enhancing visibility for drivers and passengers by optimizing light emission and distribution.
Implementation Method 1
a lens above the display device in the first region
Data Source
AI summary
A display apparatus according to the disclosure comprises a substrate including first region and eh second region, a display device for display an image in the first region, and a lens above the display device in the first region, wherein a center of the display device and a center of the lens are spaced apart from each other by a predetermined distance.