3D Display Shutter Panel Sunlight Degradation Control
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Solution Overview
Problem
Three-dimensional display devices face degradation due to sunlight irradiation, which existing technologies have not adequately addressed, leading to potential damage and frequent replacement of components.
Innovation Solution
A three-dimensional display device comprising a display panel, a shutter panel, and a controller that dynamically changes areas between light transmissive and light attenuating states to control the transmission of image light, minimizing exposure to sunlight and reducing degradation by adjusting based on environmental factors and time cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter panel continuously transmits light in a fixed pattern, then the display device can maintain stable 3D image output, but the display panel suffers from localized sunlight-induced degradation and reduced component lifespan
Solution Approach 1:
The shutter panel dynamically changes the positions and areas of light transmissive regions in each time cycle, making the sunlight exposure pattern variable rather than fixed. This dynamic adjustment prevents any single location on the display panel from receiving continuous concentrated sunlight, thereby reducing localized thermal damage and extending component lifespan while maintaining stable 3D image output
Solution Approach 2:
The system implements periodic switching of light transmissive areas at predetermined time cycles, where different regions are alternately activated and deactivated. This periodic action distributes sunlight exposure across multiple areas over time, preventing any one area from receiving excessive cumulative radiation and heat, thus improving overall display panel reliability
2Illumination intensity
If the shutter panel uses large light transmissive areas, then the display device achieves high brightness and good image quality, but the display panel is exposed to more sunlight causing faster degradation
Solution Approach 1:
The light transmissive areas are dynamically repositioned and resized in each time cycle rather than remaining static. This allows the system to use large total transmissive area for high brightness while distributing the sunlight exposure across different locations over time, preventing localized overheating and degradation that would occur with fixed large areas
Solution Approach 2:
The shutter panel periodically switches between different patterns of light transmissive areas, ensuring that no single area receives continuous maximum exposure. This periodic distribution maintains high overall brightness through cumulative light transmission while protecting individual components from excessive sustained sunlight exposure
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 reduces sunlight-induced degradation, prolonging the lifespan of the display device components and minimizing the need for frequent repairs or replacements by optimizing the duration and frequency of sunlight exposure.
Implementation Method 1
The shutter panel is configured to define a traveling direction of image light representing the parallax image from the display panel. The controller changes areas on the shutter panel in a light transmissive state to transmit the image light with at least a certain transmittance and areas on the shutter panel in a light attenuating state
Data Source
AI summary
The device (3) includes a display panel (6), a shutter panel (7), and a controller (8). The display panel (6) includes subpixels for displaying a parallax image including a first image and a second image having parallax between the images. The shutter panel (7) is configured to define a traveling direction of image light representing the parallax image from the display panel (6). The controller (8) is configured to change, in a certain time cycle, areas on the shutter panel in a light transmissive state to transmit the image light with at least a certain transmittance and areas in a light attenuating state to transmit the image light with a transmittance lower than the transmittance in the light transmissive state, and is configured to change the subpixels to display the first image and the second image based on positions of the areas in the light transmissive state.