Curved Display Light Blocking Member Shapes for Automotive Contrast
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Solution Overview
Problem
Curved display devices for automotive applications face challenges in maintaining high contrast ratios due to stress-induced light leakage during the bending process, which increases as the curvature radius decreases, affecting the display's ability to transmit information effectively, especially at night.
Innovation Solution
A curved display device design that differentiates the flat shapes of light blocking members between the main display unit and corner portions, with a higher area ratio of light blocking members in corner portions to prevent light leakage, featuring various shapes and positions of opening regions to manage bending stress effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the curvature radius is decreased to conform to curved surfaces, then the display device can be applied to vehicle interiors, but stress increases causing light leakage and reduced contrast ratio
Solution Approach 1:
The patent applies different light blocking member configurations to different regions of the display device. Corner portions have different light blocking member shapes and area ratios compared to the main display unit, with higher area ratios in corner portions to specifically address the light leakage problem in high-stress regions while maintaining display quality in the main area
Solution Approach 2:
The display device is divided into a main display unit and corner portions, with each region having optimized light blocking members. The light blocking members are segmented into first light blocking members in the main display unit and second light blocking members in corner portions, allowing independent optimization of each region to balance adaptability and contrast ratio
2Reliability
If light blocking member area ratio is increased in corner portions to prevent light leakage, then contrast ratio is improved, but display area is reduced
Solution Approach 1:
The light blocking member area ratio is localized to corner portions where stress-induced light leakage occurs. The main display unit maintains standard light blocking member configurations to preserve display area, while only corner portions have increased light blocking member area ratios, thus improving contrast ratio without significantly reducing overall display area
Data Source
AI summary
A curved display device includes a main display unit; a corner portion positioned at a corner of the main display unit; a first light blocking member positioned in the main display unit; and a second light blocking member positioned in the corner portion, wherein a first flat shape of the first light blocking member is different from a second flat shape of the second light blocking member.