Grating Electrode Reliability via Pillar Distribution
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Solution Overview
Problem
Existing 3D holographic display devices face reliability issues due to the crushing of grating electrodes by supporting pillars, which disrupts electrical connections and affects display performance.
Innovation Solution
A grating design with strategically arranged spacing pillars, where the first unit vector and second unit vector are not parallel to the grating electrode's direction, reducing the number of pillars corresponding to each electrode and dispersing them to prevent simultaneous crushing, thereby enhancing signal transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple supporting pillars are used to support the grating electrode, then the structural support is improved, but the risk of crushing the grating electrode increases
Solution Approach 1:
The patent segments the supporting pillars into different groups based on their positional relationships with grating electrodes. By dividing pillars into first supporting pillars (at ends of electrodes) and second supporting pillars (between electrodes), the design distributes support functions to reduce concentrated crushing risk while maintaining overall structural integrity.
Solution Approach 2:
The patent applies different support configurations to different locations. First supporting pillars are positioned at electrode ends with specific spacing from adjacent electrodes, while second supporting pillars are positioned between electrodes. This local differentiation optimizes support at critical locations without compromising overall reliability.
2Stability of the object's composition
If supporting pillars are densely arranged to improve support coverage, then the structural stability is improved, but the possibility of simultaneous crushing of multiple pillars increases
Solution Approach 1:
The patent introduces asymmetric spacing relationships between supporting pillars and grating electrodes. The first supporting pillars are positioned at specific distances from adjacent electrodes, creating an asymmetric distribution pattern that reduces the probability of simultaneous crushing events while maintaining structural stability.
Solution Approach 2:
The patent considers the spatial arrangement in multiple dimensions by defining specific angular relationships (β1 and γ1) between the supporting pillar array and the grating electrode direction. This multi-dimensional optimization distributes pillars to minimize alignment risks while maintaining coverage.
Data Source
AI summary
A gating and a 3D holographic display device are provided. The grating includes grating electrodes and spacing pillars disposed between a first substrate and a second substrate opposite to the first substrate. The grating electrodes extend along a first direction and are arranged along a second direction. Along a plane parallel to the first substrate, positions of spacing pillars are referred to as matrix points. The spacing pillars correspond to the matrix points; the matrix points include multiple first matrix point units arranged as an array. A minimum repeating unit of the matrix points includes four first matrix point units located at four vertices of a first quadrilateral. Two adjacent sides of the first quadrilateral are defined as a first unit vector and a second unit vector, respectively; and an angle between the first unit vector and the second unit vector is α1, and 0°≤α1≤90°.