Grating Structure Support Column Segmentation for Naked-Eye 3D Displays
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Solution Overview
Problem
The existing grating structures for naked-eye 3D displays using light barrier technology suffer from significant variations in the number of support columns visible from different angles, leading to uneven brightness and the formation of periodic moiré patterns due to differences in viewing positions.
Innovation Solution
A grating structure with alternately distributed slit and light blocking regions, featuring two electrode plates and support columns arranged in a specific pattern to minimize variations in support column visibility across angles, including at least two support columns in each slit region, and utilizing a dielectric layer to form interconvertible regions under different voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single row of support columns is used in each slit region, then the structure is simple, but the number of visible support columns varies significantly at different viewing angles, causing moiré patterns
Solution Approach 1:
The support columns in each slit region are segmented into multiple rows (at least two rows) along the extending direction of the slit. This segmentation ensures that when viewed from different angles, the human eye can always see support columns from different rows, maintaining a relatively constant number of visible support columns and reducing moiré pattern formation.
2Object-affected harmful factors
If multiple support columns are added to reduce moiré patterns, then moiré visibility decreases, but the device complexity increases
Solution Approach 1:
Instead of adding more support columns in the horizontal direction (first direction), the patent adds rows of support columns in the vertical direction (second direction, extending direction of the slit). This dimensional change allows multiple support columns to be visible from different angles without significantly increasing horizontal complexity, as the additional rows are distributed along the length of the slit rather than clustering horizontally.
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 reduces the variation in support column visibility and increases the frequency of column changes, significantly reducing the visibility of moiré patterns, making it difficult for the human eye to perceive them, while maintaining a structurally simple and cost-effective design.
Implementation Method 1
a dielectric layer (e.g., a liquid crystal layer) disposed between the two electrode plates. In such a case, light blocking regions and slit regions may be formed on the entire grating by changing the voltage applied to different regions of the two electrode plates
Data Source
AI summary
A grating structure includes slit regions (4) and light blocking regions (5) that are alternately distributed in a first direction. The slit regions (4) and the light blocking regions (5) extend in a second direction, and the first direction is perpendicular to the second direction. The grating structure further includes two electrode plates (10, 20) disposed oppositely, and a plurality of support columns (3) disposed between the two electrode plates (10, 20) and supporting them. At least two of the support columns (3) are spaced apart in the first direction are arranged in each of the slit regions (4).