Light Shutter Panel for Transparent Display Background Light Control
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Solution Overview
Problem
Transparent display apparatuses often hinder the recognition of video information due to background scenes, degrading the primary function of providing video information.
Innovation Solution
A light shutter panel with a light blocking and light transmitting function, integrated into a transparent display apparatus, allowing users to select between transparent and non-transparent modes, with a light transmittance ratio of at least 70% in transparent mode and complete light blocking in non-transparent mode to reduce background light intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent display apparatus always provides a background scene, then the background scene is visible through the display device, but the background scene hinders the observer to properly recognize the video information
Solution Approach 1:
The light shutter panel dynamically changes its light transmittance between a first level (at least 70%) and a second level (less than 10%) based on control signals, allowing the display apparatus to switch between transparent and opaque states to optimize both background visibility and video information recognition
Solution Approach 2:
The light shutter panel changes its light transmittance parameter between two distinct states: a first light transmittance level of at least 70% for transparent mode and a second light transmittance level of less than 10% for opaque mode, enabling flexible control over the balance between background scene visibility and video information clarity
2Device complexity
If the light shutter panel uses a single layer structure, then the device complexity is reduced, but the light blocking performance and transmittance uniformity are insufficient
Solution Approach 1:
The light shutter panel is segmented into multiple layers (first light shutter panel and second light shutter panel) with each layer containing electrode plates, shutter layers, and ink storage portions. This segmentation allows each layer to contribute to the overall light control function, achieving superior light blocking performance and transmittance uniformity while maintaining reasonable device complexity
Solution Approach 2:
The patent employs a nested structure where multiple light shutter panels are stacked together, with the first and second light shutter panels positioned in sequence. This nesting approach enables the combined system to achieve enhanced light control performance through the cumulative effect of multiple layers, with each layer contributing to the overall light blocking and transmittance characteristics
3Reliability
If the light shutter panel achieves high light blocking performance, then the light transmittance is reduced to less than 10%, but the distortion of video information due to background light intensity increases
Solution Approach 1:
The light shutter panel dynamically adjusts its light transmittance between a first level (at least 70%) and a second level (less than 10%) based on control signals, allowing the display apparatus to switch between transparent and opaque states to optimize both background visibility and video information clarity
Solution Approach 2:
The light shutter panel changes its light transmittance parameter between two distinct states: a first light transmittance level of at least 70% for transparent mode and a second light transmittance level of less than 10% for opaque mode, enabling flexible control over the balance between background scene visibility and video information clarity
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 enables clear video information display with or without background scenes, maintaining high transmittance while minimizing light distortion and leakage, ensuring optimal video information visibility.
Implementation Method 1
a light shutter panel selectively blocking or transmitting the light incident from the back side of the panel
Implementation Method 2
a transparent display panel disposed front of the light shutter panel for providing video information with the background scene selectively passing the light shutter panel
Data Source
AI summary
The present disclosure relates to a light shutter panel and a transparent display apparatus having the same. The light shutter panel comprises: a first light shutter panel and a second light shutter panel. Each of the first and second light shutter panels includes: a lower electrode plate, an upper electrode plate, a shutter layer, transparent spacers and a black ink. The lower electrode plate and the upper electrode plate are attached as facing each other. The shutter layer is disposed between the lower electrode plate and the upper electrode plate. The shutter layer includes a maximum light transmitting portion, a minimum light blocking portion, an ink storage portion and an electric field guide. The electric field guide is disposed between the ink storage portions. The transparent spacers maintain the gap between the lower electrode plate and the upper electrode plate. The black ink is filled into the ink storage portion.