Stereoscopic Display Non-Control Region Bending for Moiré Suppression
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Solution Overview
Problem
Bidirectional stereoscopic image display devices face challenges in suppressing 3D moiré and crosstalk, particularly when observing from different directions, as existing methods are ineffective in maintaining luminance smoothness and stereoscopic image quality across multiple directions.
Innovation Solution
The device incorporates a display panel with sub-pixels arranged in a matrix and an optical module that distributes light differently along each direction, featuring non-control regions bent within a lattice structure to minimize 3D moiré and crosstalk, ensuring equivalent image quality in both horizontal and vertical directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the non-control region is expanded and projected by combining the display panel and optical module, then the 3D moiré is observed by the observer, but the luminance smoothness deteriorates
Solution Approach 1:
The invention divides the non-control region into multiple segments corresponding to different sub-pixels, and assigns different aperture shapes to each segment. This segmentation allows independent optimization of each region to suppress 3D moiré while maintaining luminance smoothness.
Solution Approach 2:
The invention applies different aperture shapes (first aperture shape for first non-control region, second aperture shape for second non-control region) to different local areas of the non-control region. This local quality approach enables targeted suppression of 3D moiré in specific directions while preserving luminance characteristics.
2Illumination intensity
If existing methods are used to suppress 3D moiré, then the luminance fluctuation is reduced in one direction, but the stereoscopic image quality deteriorates when viewed from multiple directions
Solution Approach 1:
The invention creates a multi-functional aperture shape design where the first aperture shape suppresses 3D moiré in the first direction and the second aperture shape suppresses 3D moiré in the second direction. This universal design maintains stereoscopic image quality across multiple viewing directions simultaneously.
Solution Approach 2:
The invention extends the suppression of 3D moiré from a single direction to multiple directions by introducing aperture shapes in different orientations. This dimensional approach allows effective moiré suppression while maintaining image quality across the stereopsis region.
3Object-affected harmful factors
If the aperture areas in the space separating directions within a pixel are made constant through tilting one side of the pixel obliquely, then the 3D moiré is lightened, but the device complexity increases
Solution Approach 1:
Instead of tilting the pixel structure obliquely to suppress 3D moiré, the invention inverts the approach by maintaining a regular pixel grid and instead varying the aperture shapes within each non-control region. This inversion simplifies the overall device structure while achieving the same moiré suppression effect.
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 effectively suppresses 3D moiré and crosstalk, providing fine stereopsis and maintaining image quality regardless of the viewing direction, enhancing the overall stereoscopic display experience.
Implementation Method 1
an optical module which distributes light emitted from the pixels arranged in the first direction to different directions from each other along the first direction and distributes light emitted from the pixels arranged in the second direction to different directions from each other along the second direction
Data Source
AI summary
A stereoscopic image display device includes: a display panel on which pixels each constituted with a plurality of sub-pixels formed with electro-optic elements by corresponding to parallax images are arranged in matrix; and an optical module which distributes light emitted from the pixels arranged in the first and second directions to different directions from each other along the first and second directions, respectively. The display panel includes first and second non-control regions which are the regions existing between boundaries of apertures of the sub-pixels where control of electric-optic conversion cannot be done. An intersection part of the first and second non-control regions is disposed on a lattice point that is an intersection point of segments in a unit lattice constituted with lattice lines, and the first or the second non-control region is bent at least once within the unit lattice with respect to the lattice lines.