Light Shutter Panel for Transparent Display with Dynamic Ink Control
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Solution Overview
Problem
Transparent display apparatuses often suffer from degraded video information quality due to background scenes, as existing technologies struggle to effectively block or transmit light, leading to recognition issues and distortion.
Innovation Solution
A light shutter panel with a shutter layer comprising a maximum light transmitting portion, a minimum light blocking portion, ink storage portions, and an electric field guide, which allows for selective light blocking or transmission, ensuring a transmittance ratio of at least 70% and preventing distortion by concentrating charged black ink within the minimum light blocking portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light shutter panel blocks light from the backside, then the video information recognition is improved, but the background scene visibility is lost
Solution Approach 1:
The light shutter panel uses a dynamic electro-optical mechanism where charged black ink particles can be moved between a light blocking state and a light transmitting state by applying electric fields. This allows the panel to dynamically switch between blocking background light for video recognition and transmitting light for background visibility, resolving the contradiction between these two opposing requirements.
Solution Approach 2:
The patent changes the optical parameters of the shutter layer by controlling the distribution of charged black ink particles. When particles are concentrated in the minimum light blocking portion, light blocking is maximized for video recognition. When particles are dispersed, light transmission increases for background visibility. This parameter change allows the system to adapt between the two conflicting requirements.
2Illumination intensity
If the light shutter panel transmits light for background scene visibility, then the background scene is visible, but the video information quality is degraded
Solution Approach 1:
The system dynamically adjusts the optical properties of the shutter layer by controlling electric field application. When background visibility is needed, the panel transmits light. When video quality is prioritized, the panel switches to blocking mode, dynamically resolving the contradiction between background visibility and video quality.
Solution Approach 2:
The optical transmission parameter of the shutter layer is changed by controlling charged ink particle distribution. The panel can transition from a high-transmission state (for background visibility) to a high-blocking state (for video quality), allowing the system to adapt to different operational requirements.
3Measurement precision
If the charged black ink is dispersed throughout the ink storage portion, then the light blocking coverage is maximized, but the light transmittance ratio drops below 70%
Solution Approach 1:
The patent applies local quality by creating distinct regions within the ink storage portion: a minimum light blocking portion with high ink concentration for light blocking, and a maximum light transmitting portion with low ink concentration for light transmission. This spatial differentiation of ink density allows the system to achieve both light blocking coverage and maintain transmittance ratio above 70%.
Solution Approach 2:
The ink storage portion is segmented into functional zones with different ink concentrations. The minimum light blocking portion contains concentrated charged black ink for effective light blocking, while the maximum light transmitting portion has dispersed or minimal ink to maintain high transmittance. This segmentation resolves the contradiction between coverage and transmittance ratio.
4Measurement precision
If the light shutter panel completely blocks light, then the video information is clear without distortion, but the background scene cannot be seen
Solution Approach 1:
The light shutter panel provides dynamic control between complete light blocking mode (for clear video information without distortion) and partial light transmission mode (for background scene visibility). By adjusting the electric field application, the system can switch between these states, resolving the contradiction between video clarity and background visibility.
Solution Approach 2:
The optical blocking parameter of the shutter layer is controlled by adjusting charged ink particle distribution. When particles are fully concentrated in the minimum light blocking portion, complete light blocking is achieved for clear video. When particles are partially dispersed, light transmission is allowed for background visibility, adapting to different viewing requirements.
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 a transparent display apparatus to provide clear video information with or without a background scene, maintaining sufficient brightness and preventing distortions by effectively managing light transmission and blocking, thus enhancing user experience.
Implementation Method 1
When driving the charge black ink by applying an electric field between the upper electrode layer and the lower electrode layer
Implementation Method 2
a light shutter panel selectively blocking or transpassing the light incident from the back side of the 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 according to the present disclosure comprises: a lower electrode plate; an upper electrode plate facing with the lower electrode plate; a shutter layer disposed between the lower electrode plate and the upper electrode plate, and including a maximum light transmitting portion, a minimum light blocking portion, ink storage portions connecting the maximum light transmitting portion and the minimum light blocking portion, and an electric field guide disposed between the ink storage portions; a plurality of spacers maintaining a gap between the lower electrode plate and the upper electrode plate; and black ink filled into the ink storage portion of the shutter layer.