3D Display Parallax Panel Asymmetry Reduces Moiré
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Solution Overview
Problem
Three-dimensional image display devices using lenticular or parallax barrier systems suffer from luminance differences between images for the right and left eyes, leading to '3D moiré' artifacts, which degrade the quality of the displayed image.
Innovation Solution
A three-dimensional display device employing a liquid crystal display panel with alternately arranged pixels for the right and left eyes, and a parallax forming liquid crystal panel that shifts the lateral center positions of these pixels to reduce luminance differences, thereby minimizing '3D moiré' artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lenticular lens or parallax barrier is used to display three-dimensional images without glasses, then different images can be provided to the right eye and left eye, but luminance differences occur between the images for the right and left eyes, causing '3D moiré' artifacts that degrade image quality
Solution Approach 1:
The patent applies asymmetry by intentionally designing the pixel arrangement to be asymmetric with respect to the lenticular lens. Specifically, the number of pixels in the left eye image region differs from the number of pixels in the right eye image region. This asymmetric arrangement compensates for the luminance differences caused by the lens, reducing the occurrence of 3D moiré artifacts while maintaining three-dimensional display capability.
Solution Approach 2:
The patent implements local quality by applying different pixel arrangements to different regions of the display. The left eye and right eye image regions have different numbers of pixels, and the black matrix regions are positioned differently in each eye's image area. This localized differentiation allows each region to be optimized for its specific function, reducing overall luminance imbalance.
2Adaptability or versatility
If pixels for left eye and right eye are alternately arranged in a matrix shape, then a three-dimensional image can be displayed, but the fixed pixel arrangement causes luminance imbalance when viewed through the lenticular lens
Solution Approach 1:
The patent breaks the symmetric alternating pixel arrangement by making the number of pixels in the left eye region different from the right eye region. This asymmetric modification to the otherwise regular alternating pattern compensates for the optical properties of the lenticular lens, achieving better luminance balance between the two eyes while preserving the stereoscopic display function.
3Object-affected harmful factors
If a black matrix is formed between pixels for right eye and left eye, then light leakage between pixels can be prevented, but the fixed positioning of the black matrix does not compensate for luminance differences
Solution Approach 1:
The patent positions the black matrix regions asymmetrically in the left eye and right eye image areas. Rather than using a fixed symmetric position, the black matrix is placed at different locations depending on the eye, locally compensating for luminance differences in each region while continuing to prevent light leakage between adjacent pixels.
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 luminance differences and '3D moiré' artifacts, enhancing the quality of the three-dimensional image displayed by shifting the lateral center positions of pixel luminance in the display device.
Implementation Method 1
a lens formed by a liquid crystal layer 918 oriented by an electric field generated from a potential difference between the stripe electrodes 950 and the plane electrode 906 of the liquid crystal lens panel 900
Implementation Method 2
The liquid crystal lens panel 900 includes a stripe electrode substrate 910 including stripe electrodes 950 arranged on a third glass substrate 912, a plane electrode substrate 904 including a plane electrode 906 arranged on a fourth glass substrate 905, and a liquid crystal layer 918 sealed between the stripe electrode substrate 910 and the plane electrode substrate 904
Implementation Method 3
In the lenticular system, an image is set behind a lens called lenticular lens. The image includes images in a visual field from the right eye and images in a visual field from the left eye formed by longitudinally cutting, in strip shapes, which are alternately arranged. The lense is formed by laterally arranging semi-cylindrical lenses extending in the longitudinal direction. A user observes the image via the lenticular lens, whereby different images are provided to the right eye and the left eye to display a three dimensional image.
Data Source
AI summary
It is an object to reduce 3D moiré and provide a higher-quality three dimensional image display device. The three dimensional image display device includes a display panel on which rows of pixels for right eye and rows of pixels for left eye are alternately arranged in a lateral direction, the display panel planarly displaying an image for three dimensional display, and a parallax forming liquid crystal panel for forming a parallax in an image for right eye and an image for left eye displayed by the display panel. Lateral direction center positions, which are vertexes of luminance in the lateral direction of an image for right eye and an image for left eye, where the image for three dimensional display is visually sensed through the parallax forming liquid crystal panel, are respectively positions shifted in the lateral direction in different positions in the screen longitudinal direction.