Autostereoscopic Display Subpixel Layout for Intensity Variation
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Solution Overview
Problem
Conventional autostereoscopic displays face challenges in providing high-quality images at multiple viewing angles due to constraints on pixel density, leading to issues like angular and spatial intensity variations, moiré fringes, and poor text rendition, which are exacerbated by the high pixel count required for high-resolution displays.
Innovation Solution
The proposed solution involves an autostereoscopic display system with a light-modulating panel featuring a higher density of green subpixels relative to red and blue subpixels, arranged in an oblique pattern with a lenticular sheet to optimize subpixel allocation and reduce intensity variations, while maintaining effective pixel alignment and minimizing moiré effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional LCD panel with uniform subpixel distribution is used, then manufacturing is simple, but angular and spatial intensity variations occur
Solution Approach 1:
The patent applies local quality by varying the density of subpixels of different colors (R, G, B) across different regions of the display panel. Specifically, green subpixels are distributed differently from red and blue subpixels to compensate for the human eye's varying sensitivity to different colors at different viewing angles, thereby reducing angular and spatial intensity variations while maintaining manufacturing feasibility.
2Measurement precision
If high pixel count is used to provide high-resolution displays, then image quality improves, but moiré fringes and poor text rendition are exacerbated
Solution Approach 1:
The patent employs asymmetry by using non-uniform distribution of subpixels of different colors rather than a symmetric uniform grid. The green subpixels are strategically positioned with different spacing and patterns compared to red and blue subpixels, which helps to break up regular patterns that cause moiré fringes while maintaining high effective resolution and improving text rendition.
3Device complexity
If uniform subpixel density is used, then device complexity is low, but viewing resolution and number of views are limited
Solution Approach 1:
The patent applies parameter changes by varying the spatial distribution parameters of subpixels of different colors. The green subpixels are arranged with different density and spacing parameters compared to red and blue subpixels, allowing the system to achieve higher viewing resolution and support more views without significantly increasing overall device complexity. This selective parameter optimization targets the most critical viewing zones.
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 viewing resolution and increases the number of views within a larger viewing zone, providing high-quality stereoscopic images with reduced angular intensity variations and improved text rendition, while being compatible with current manufacturing constraints and color filter array technologies.
Implementation Method 1
Relying on the refractive property of the lenses in the optical array, the optical array is operable to 'hide' certain pixels at any given viewing angle and provide an image only with those pixels that remain visible.
Data Source
AI summary
The present disclosure is directed to autostereoscopic display systems operable to provide increased number of views and related methods. One embodiment of the display systems comprises a light-modulating display panel comprising a first set of colored subpixels and a second set of colored subpixels, and the number of subpixels in the first set of colored subpixels is greater than the number of subpixels in the second set of colored subpixels. The display system further comprises a lenticular sheet disposed in light paths of the colored subpixels of the display panel.