Transparent Display Device Using Rotation-Based Persistence of Vision
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Solution Overview
Problem
Cylinder rotation display devices face issues with eccentricity during rotation, leading to unclear images and complex signal transmission structures, which hinder the display of high-definition images and low visual effects.
Innovation Solution
A transparent display device using rotation-based persistence of vision, featuring image display bars arranged at regular angles around a rotating shaft to minimize eccentricity, with integrated image boards and a simple structure that eliminates the need for signal access structures, allowing for clear and high-definition image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light emitting diodes are installed biasedly in one direction with respect to a rotating shaft, then the structure is simple, but eccentricity is generated during rotation causing oscillation and unclear images
Solution Approach 1:
The patent applies asymmetry by intentionally creating a balanced asymmetric distribution of light emitting diodes around the rotating shaft. Instead of random or biased installation, the diodes are arranged in specific asymmetric positions that counterbalance each other, preventing eccentricity while maintaining structural simplicity. This resolves the contradiction by using controlled asymmetry to achieve both ease of manufacture and image clarity.
2Device complexity
If the image board is separated from the light emitting diodes, then the access structure for transmitting image signals becomes complicated, but integrating them increases device complexity
Solution Approach 1:
The patent merges the image board with the light emitting diodes into an integrated unit that rotates together. This combination eliminates the need for separate access structures to transmit image signals to the rotating components, as the image signals are directly supplied to the integrated image board-diode assembly. This resolves the contradiction by combining multiple functions into a single rotating unit, reducing structural complexity while maintaining reliable signal transmission.
3Adaptability or versatility
If only persistence of vision images are displayed, then the display function is simple, but visual effect is low
Solution Approach 1:
The patent implements multi-functionality by enabling the rotating display device to perform multiple display functions: it can display persistence of vision images, transparent images, and combined images simultaneously. The system uses adjustable transparency control to switch between different display modes, allowing a single device to serve multiple purposes. This resolves the contradiction by adding versatility to the display functions while maintaining the simplicity of the rotating mechanism through software control rather than additional mechanical components.
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 inhibits image distortion, reduces manufacturing costs, and enhances visual effects by enabling clear and high-definition image display with a simplified structure, while minimizing oscillation and signal transmission complications.
Implementation Method 1
the transparent display unit displaying second images which are viewed to overlap the first images by persistence of vision based on rotation of the image display bars
Data Source
AI summary
A transparent display device using rotation-based persistence of vision includes: an opaque display unit that displays first images; a transparent display unit that includes image display bars, which are positioned outside the opaque display unit and on each of which a plurality of light emitting elements are mounted, and a display bar driving unit which rotates the image display bars, the transparent display unit displaying second images which are viewed to overlap the first images by persistence of vision based on rotation of the image display bars; and a display casing that accommodates both the opaque and transparent display units in a state where the transparent display unit is positioned outside the opaque display unit, the display casing having a sight window through which the first images and the second images are viewed at a preset region.