Vehicle Display Module Dark Mask Uniformity
Solution Overview
Problem
The existing control modules in vehicle interiors suffer from inhomogeneous appearance due to the combination of different display technologies, leading to reduced user experience and perceived quality, as the off-state display surfaces appear uneven and reflective.
Innovation Solution
The implementation of dark masks with uniform absorption properties and precise axial separation from the display surfaces, combined with various display technologies such as liquid crystal displays and OLEDs, ensures a uniform appearance both on and off, reducing unwanted reflections and enhancing user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different display technologies are combined in the same control module, then the functionality and information display capability are improved, but the appearance homogeneity and user perception quality deteriorate due to inhomogeneous brightness and reflection
Solution Approach 1:
A dark mask is introduced as an intermediary element between the light source and the display surface. This dark mask has specific optical properties (absorption coefficient between 0.2 and 0.5) that mediate the light transmission to achieve uniform appearance across different display technologies while maintaining their individual functional characteristics
Solution Approach 2:
The optical parameters of the dark mask are precisely controlled, with absorption coefficient ranging from 0.2 to 0.5 and thickness between 0.5mm to 2mm. By adjusting these parameters, the patent achieves optimal balance between light absorption for uniform appearance and light transmission for visibility, resolving the contradiction between appearance homogeneity and display effectiveness
2Illumination intensity
If the dark mask is placed close to the display surface, then the uniform appearance and reflection reduction are improved, but the manufacturing precision and assembly tolerance requirements worsen
Solution Approach 1:
The axial separation distance is optimized to a specific range (0.5mm to 2mm) which balances two competing requirements: sufficient proximity to achieve uniform appearance and reflection control, while maintaining reasonable manufacturing and assembly tolerances. This parameter optimization resolves the contradiction between appearance quality and manufacturing feasibility
3Illumination intensity
If the dark mask absorption coefficient is increased, then the reflection reduction and appearance uniformity are improved, but the light transmission and display brightness worsen
Solution Approach 1:
The absorption coefficient of the dark mask is optimized to a specific range (0.2 to 0.5) rather than using extreme values. This intermediate range achieves sufficient reflection control and appearance uniformity while maintaining adequate light transmission for display brightness, resolving the contradiction between reflection control and light transmission efficiency
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 results in a harmonious and uniform appearance of the control module, improving user experience by minimizing the visibility of display artifacts and reflections, thus enhancing the overall quality of the control module.
Implementation Method 1
dark masks having an overall absorption factor of between 50 and 80%
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a display module, comprising at least two display devices (1, 1a, 1b, 1c), the display modules (1, 1a, 1b, 1c) respectively comprising a display surface (S) and a dark mask (17) covering the display surface (S), the dark masks (17) having an overall absorption factor between 50 and 80%, characterized in that the transmission coefficients of the dark masks (17) differ by less than 3% for wavelengths in the visible spectral range and in that the dark masks (17) are arranged with respect to the display surfaces (S) so as to have an axial gap (E) with said display surfaces (S) of between 0.5 and 10mm, and in that the axial gaps (E) of the two display devices (1, 1a, 1b, 1c) differ by less than 0.3mm.