Asymmetric Light Control Panel for Vehicle Displays
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Solution Overview
Problem
Existing display devices, particularly for vehicles, face challenges in reducing the moire phenomenon and ensuring various viewing angles, which are not adequately addressed by current technologies.
Innovation Solution
A light control panel is designed with a light control layer comprising first and second light blocking parts on a substrate, where the parts are alternately arranged with different widths and spacings, and a light transmitting layer, to suppress the moire phenomenon and enhance viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light control film is used to block light towards the windshield, then driver safety is improved, but the moire phenomenon occurs and viewing angles are limited
Solution Approach 1:
The patent applies asymmetry by using light blocking parts with different widths (first width and second width) in alternating arrangement. This asymmetric design breaks the periodicity that causes moire phenomena while maintaining effective light blocking for driver safety.
Solution Approach 2:
The patent implements local quality by varying the widths of light blocking parts at different positions. The first light blocking parts have a first width while the second light blocking parts have a second width, creating local variations in light blocking properties that prevent moire patterns.
2Reliability
If a light control film is used to block light towards the windshield, then driver safety is improved, but viewing angles are limited
Solution Approach 1:
The asymmetric arrangement of light blocking parts with different widths creates a more uniform light distribution across different viewing angles, allowing the display to be viewed comfortably from multiple directions while maintaining driver safety.
Solution Approach 2:
The patent addresses viewing angles by controlling light in multiple directions through the alternating pattern of different width blocks, effectively managing light transmission across different angular dimensions rather than just a single direction.
3Ease of manufacture
If light blocking parts are arranged uniformly, then manufacturing is simplified, but moire phenomenon occurs
Solution Approach 1:
The patent uses asymmetric widths for alternating light blocking parts to eliminate moire phenomena. While this increases design complexity, the manufacturing process remains relatively simple through conventional patterning techniques.
Solution Approach 2:
The patent changes the width parameter of light blocking parts between alternating positions. This parameter variation prevents moire patterns while maintaining compatibility with standard manufacturing processes.
4Object-affected harmful factors
If light blocking parts have different widths, then moire phenomenon is reduced, but device complexity increases
Solution Approach 1:
The asymmetric design with different width light blocking parts effectively reduces moire phenomena. The complexity is managed through systematic alternating patterns that can be implemented using standard display manufacturing techniques.
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 moire phenomenon and secures various viewing angles, improving the performance of display devices, especially for vehicle applications by controlling light transmission and absorption.
Implementation Method 1
The first light blocking parts and the second light blocking part are alternately arranged along the second direction, where a first width of each of the first light blocking parts in the second direction differs from a second width of each of the second light blocking parts in the second direction
Implementation Method 2
The light control layer may further include a light transmitting layer disposed between the first substrate and the second substrate. The light transmitting layer may form the light control layer and surround the first light blocking parts and the second light blocking parts.
Data Source
AI summary
A light control panel includes: a first substrate; a light control layer that includes first light blocking parts and second light blocking parts that are disposed on the first substrate, extend along a first direction, and are spaced apart from each other along a second direction that crosses the first direction; and a second substrate disposed on the light control layer. The first light blocking parts and the second light blocking part are alternately arranged along the second direction. A first width of each of the first light blocking parts in the second direction and a second width of each of the second light blocking parts in the second direction differ from each other.