Electrowetting Grating 3D Display Brightness
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Solution Overview
Problem
Conventional three-dimensional display technologies, such as those using liquid crystal barriers, suffer from reduced resolution and brightness due to the need for spatial-multiplexed image display and complex optical compensation, making them less effective and costly.
Innovation Solution
A three-dimensional display device employing a modulatable electrowetting grating with electrowetting light valves that switch between transmissive and shading states to maintain original resolution and brightness without the need for polarizing plates or phase retardation compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a liquid crystal barrier is used for three-dimensional display, then the three-dimensional effect is achieved, but the display brightness cannot be effectively improved and complex optical compensation design is required
Solution Approach 1:
The patent changes the optical mode of the liquid crystal barrier from OCB (optically compensated birefringence) mode to TN (twisted nematic) mode. This parameter change eliminates the need for additional polarizing plates and complex optical compensation designs, while simultaneously improving display brightness and reducing manufacturing costs
Solution Approach 2:
The patent removes the requirement for additional polarizing plates and complex optical compensation components by changing the liquid crystal mode. This extraction of unnecessary components simplifies the overall device structure and reduces manufacturing complexity
2Manufacturing precision
If spatial-multiplexed image display is used with fixed gating, then three-dimensional effect is achieved, but the resolution for three-dimensional image display is significantly reduced
Solution Approach 1:
The patent employs a movable shutter that can dynamically switch between different positions to control light transmission. This dynamic mechanism allows the display to maintain high resolution while achieving three-dimensional effect, overcoming the limitations of static spatial-multiplexed approaches
Solution Approach 2:
The patent uses periodic switching of the movable shutter between transmissive and shading states in synchronization with alternating left-eye and right-eye image frames. This periodic action enables high-resolution three-dimensional display by sequentially presenting different images to each eye without requiring complex spatial multiplexing
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 modulatable electrowetting grating enables high-brightness, high-resolution three-dimensional displays with reduced manufacturing costs and simplified optical design, overcoming the limitations of conventional technologies.
Implementation Method 1
a modulatable electrowetting grating which is disposed on the display panel, and has a plurality of electrowetting light valves corresponding to the pixels
Data Source
AI summary
A three-dimensional display device including a display panel and a modulatable electrowetting grating is provided. The display panel has a plurality of pixels. The modulatable electrowetting grating is disposed on the display panel, and has a plurality of electrowetting light valves corresponding to the pixels.