Parallax Image Display Device Using Asymmetric Staggered Patterns
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Solution Overview
Problem
Conventional parallax image display devices using spatial arrays for stereoscopic views suffer from image quality degradation due to interference signals, crosstalk, and increased observer burden, as they require precise geometric-optical positional relationships and often result in reduced pixel density and increased costs.
Innovation Solution
A parallax image display device that dynamically adjusts the division size of right-eye and left-eye image regions based on local information volumes, using a grid pattern and polarizing filters or parallax barriers to optimize image allocation and reduce crosstalk, while maintaining high image quality and transmission of information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stripe pattern array is used to spatially divide the display screen, then the stereoscopic view can be achieved, but interference signals occur and image quality degrades
Solution Approach 1:
The patent applies asymmetry by using a staggered pattern array instead of a symmetric stripe pattern. The staggered arrangement offsets the regular periodicity that causes moire interference, thereby reducing harmful interference signals while maintaining stereoscopic display functionality.
Solution Approach 2:
The patent changes the geometric parameters of the spatial division pattern from uniform stripes to staggered arrangements with specific aperture ratios and positioning. This parameter optimization reduces interference while preserving the stereoscopic effect.
2Measurement precision
If the stripe width and pixel fineness are not matched one-to-one, then finer pixels can be recognized better, but information transmission efficiency decreases
Solution Approach 1:
The patent applies local quality by allowing different regions of the display to have different stripe widths and aperture ratios optimized for local image characteristics. This enables finer pixel recognition in critical areas while maintaining overall information transmission efficiency.
3Reliability
If a polarization control plate is used to vertically enlarge the stereoscopic area, then crosstalk is reduced, but the observation height becomes limited and crosstalk increases when viewed from higher or lower positions
Solution Approach 1:
The patent segments the display area into multiple zones with different polarization orientations. This segmentation allows each zone to be optimized for specific viewing angles while collectively providing a broader acceptable observation range, reducing crosstalk across multiple positions.
4Reliability
If the geometric-optical positional relationship is made precise, then stereoscopic display performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The asymmetric staggered pattern design inherently reduces sensitivity to precise geometric alignment. The irregular arrangement breaks the strict periodicity that would require precise positioning, thereby improving robustness while maintaining display performance.
Solution Approach 2:
The patent optimizes parameters such as aperture ratio, staggered positioning, and stripe width to achieve good stereoscopic performance with relaxed alignment tolerances, reducing manufacturing complexity.
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 high-quality stereoscopic displays with reduced crosstalk and improved observer comfort by dynamically adjusting image region sizes and polarization states, maintaining image information volume and reducing the need for precise geometric alignment.
Implementation Method 1
a polarizing filter having different polarization states for the right-eye image (right-eye region) and the left-eye image (left-eye region) is provided
Implementation Method 2
by using a parallax barrier having an appropriately-set aperture elongaged in a predetermined direction or a lenticular lens
Data Source
AI summary
This parallax image display device is provided with an image acquiring unit that acquires a right-eye image and a left-eye image used for generating a parallax image enabling a stereoscopic view, an information volume distribution calculator that calculates an information volume distribution of the right-eye image and an information volume distribution of the left-eye image, and a parallax image generator that generates the parallax image from the right-eye image and the left-eye image on the basis of the information volume distribution of the right-eye image and the information volume distribution of the left-eye image.