Vehicle Display Front Member Reflectivity for Brightness
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Solution Overview
Problem
Existing vehicle display devices face challenges in efficiently illuminating a transmissive display portion when the support body has low reflectivity, leading to insufficient light and design limitations, as well as unwanted light leakage.
Innovation Solution
A display device design featuring a substrate with light-emitting elements, a support body with openings separated by a rib-like boundary portion, and a front member with higher reflectivity than the boundary portion, where the front member is positioned in front of the light-emitting elements to enhance light reflection and reduce leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the support body has a hue with low reflectivity (e.g., black), then the external appearance is improved and light leakage is reduced, but the transmissive display portion cannot be illuminated with sufficiently bright light
Solution Approach 1:
The invention applies different reflectivity properties to different parts of the support body: the boundary portion has low reflectivity (black hue) to reduce light leakage and improve appearance, while the front facing portion has high reflectivity (white hue) to illuminate the transmissive display portion. This local differentiation of optical properties resolves the contradiction between appearance and illumination.
2Illumination intensity
If the support body has a hue with high reflectivity (e.g., white), then the transmissive display portion is illuminated brightly, but the external appearance is limited and light leakage occurs
Solution Approach 1:
The invention differentiates the optical properties of different regions: the front facing portion uses high reflectivity material to illuminate the display, while the boundary portion uses low reflectivity material to prevent light leakage and improve appearance. This spatial separation of functions eliminates the harmful effects of uniform high reflectivity.
3Ease of manufacture
If the support body has a uniform hue, then the manufacturing is simplified, but the light distribution to the transmissive display portion is insufficient when using low reflectivity hues
Solution Approach 1:
The invention divides the support body into two distinct portions with different optical properties: the boundary portion and the front facing portion. While this increases manufacturing complexity slightly, it enables both low light leakage and sufficient illumination by optimizing each region's reflectivity independently.
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 increases the utilization of light emitted from the light-emitting elements, improving the brightness of the transmissive display portion while maintaining a desirable external appearance and minimizing light leakage.
Implementation Method 1
a reflectivity of a front surface of the front facing portion with respect to light emitted from the light emitting elements is higher than a reflectivity of a front surface of the boundary portion with respect to the light
Data Source
AI summary
A front member having a hue with higher reflectivity is disposed in a support recess of a front support body having a hue with lower reflectivity. A bottom portion of the support recess has rib-shaped boundary portions that separate openings that light emitting elements face. The front member includes front facing portions that cover the front sides of the boundary portions and front openings that face the front sides of the light emitting elements. Light emitted from the light emitting elements is reflected by an inner surface of the front member and surfaces of the front facing portions, which have a hue with higher reflectivity, and is provided to a transmissive display portion.