Liquid Crystal Grating Double Vision Display Method
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Solution Overview
Problem
Current double vision display methods, such as the parallax barrier technique, result in reduced horizontal resolution and viewing clarity as users can only view a portion of the pixels, leading to incomplete image perception.
Innovation Solution
A method and device that reconstructs image signals by combining pixels from two raw images and alternately inputs these signals to a display panel with a liquid crystal grating, adjusting the light transmission position to direct specific pixel parts to different viewing areas, thereby increasing refresh frequencies and improving pixel visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parallax barrier technique is used for double vision display, then two images can be displayed simultaneously, but horizontal resolution and viewing clarity are reduced because users can only view a portion of the pixels
Solution Approach 1:
The liquid crystal grating dynamically switches between different light transmission positions based on the input image signal. When a first image signal is input, the grating transmits light at a first position; when a second image signal is input, it transmits light at a second position. This dynamic switching enables the system to adapt to different display modes while maintaining full pixel utilization for each image, thereby achieving double vision display without sacrificing horizontal resolution.
Solution Approach 2:
The invention changes the light transmission parameter of the liquid crystal grating by applying different voltages. By controlling the voltage applied to the liquid crystal grating, the system switches between different light transmission positions (first position for first image, second position for second image). This parameter change enables flexible control over which image is displayed while maintaining full resolution for each image type.
2Adaptability or versatility
If a parallax barrier technique is used for double vision display, then two images can be displayed simultaneously, but viewing clarity is reduced due to incomplete image perception
Solution Approach 1:
The liquid crystal grating dynamically adjusts its light transmission position in response to different image signals. When the first image signal is provided, the grating is configured to transmit light at a first position that directs all pixels of the first image to the first viewing area. When the second image signal is provided, it transmits light at a second position for the second viewing area. This dynamic configuration ensures complete image perception for each viewer without information loss.
Solution Approach 2:
The display system segments the pixel output by spatial position rather than by image type. The liquid crystal grating segments the light transmission path, directing light from different pixel positions to different viewing areas based on the current image signal. This segmentation approach ensures that each viewing area receives complete image information from all relevant pixels, eliminating incomplete image perception.
3Manufacturing precision
If light transmission position of liquid crystal grating is switched to direct specific pixel parts to different viewing areas, then horizontal resolution is improved, but device complexity increases
Solution Approach 1:
The invention controls the liquid crystal grating by changing electrical parameters (voltage) rather than using complex mechanical mechanisms. By applying different voltages to the liquid crystal grating, the system switches between different light transmission positions with simple electrical control. This parameter-based control approach achieves precise horizontal resolution improvement while minimizing device complexity.
4Loss of information
If refresh frequency is increased to improve pixel visibility, then pixel visibility is improved, but energy consumption increases
Solution Approach 1:
The system uses periodic alternation between first and second image signals at a high refresh frequency. By rapidly switching between displaying the first image and the second image through the liquid crystal grating's periodic reconfiguration, the system achieves persistent pixel visibility for both images. This periodic action leverages human visual persistence to maintain visibility while managing energy consumption through controlled refresh cycles.
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
This approach enhances horizontal resolution and viewing clarity by ensuring all pixels of one raw image are visible in one area and all pixels of the second raw image are visible in another area, improving the overall double vision display experience.
Implementation Method 1
a liquid crystal layer between the first substrate and the second substrate... switching the light transmission position of the liquid crystal grating according to the voltage difference
Implementation Method 2
controlling a voltage difference between the plate-shaped electrode and each of the strip electrodes according to the first image signal... switching the light transmission position of the liquid crystal grating according to the voltage difference
Data Source
AI summary
In one embodiment, a double vision display method includes: constructing a first image signal and a second image signal for a combination of image frames that includes a first raw image frame and a second raw image frame; alternately inputting the first image signal and the second image signal for each combination of image frames to a display panel; switching, when the first image signal is inputted to the display panel, a light transmission position of a liquid crystal grating according to the first image signal, to form a corresponding first double vision grating state; and switching, when the second image signal is inputted to the display panel, the light transmission position of the liquid crystal grating according to the second image signal, to form a corresponding second double vision grating state.