Autostereoscopic Display Lens Array Pixel Positioning
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Solution Overview
Problem
Current autostereoscopic 3D image display devices face limitations in providing a wide viewing angle and maintaining image quality, particularly in side views, due to field curvature and image quality deterioration such as crosstalk and reduced brightness.
Innovation Solution
A display device design incorporating a lens array unit with a specific arrangement of pixels and lenses, where the distance of pixels from the optical axis and the substrate surface varies periodically, allowing pixels to be positioned along the focal surface of the lens, thereby reducing field curvature and improving image quality across a wider viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lens array unit is used to reproduce 3D images, then multi-view 3D image reproduction is achieved, but image quality deteriorates in side views due to field curvature
Solution Approach 1:
The patent applies local quality by varying the distance of pixels from the substrate surface based on their position relative to the optical axis. Pixels closer to the optical axis are positioned at different distances than pixels farther away, creating localized adjustments that compensate for field curvature effects in different regions of the display, thereby improving side view image quality while maintaining multi-view 3D reproduction capability
Solution Approach 2:
The patent introduces a new dimension by positioning pixels at different distances from the substrate surface in the vertical direction, rather than only in the horizontal plane. This three-dimensional pixel arrangement allows the display to compensate for optical path differences and field curvature, improving image quality across different viewing angles while maintaining the multi-view 3D effect
2Adaptability or versatility
If viewing angle is widened for multi-view display, then more viewpoints are available, but image quality deteriorates due to crosstalk and reduced brightness
Solution Approach 1:
The patent applies local quality by varying the distance of pixels from the substrate surface based on their position relative to the optical axis. Pixels closer to the optical axis are positioned at different distances than pixels farther away, creating localized adjustments that compensate for field curvature effects in different regions of the display, thereby improving side view image quality while maintaining multi-view 3D reproduction capability
Solution Approach 2:
The patent introduces a new dimension by positioning pixels at different distances from the substrate surface in the vertical direction, rather than only in the horizontal plane. This three-dimensional pixel arrangement allows the display to compensate for optical path differences and field curvature, improving image quality across different viewing angles while maintaining the multi-view 3D 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
The solution enhances the quality of side images by minimizing image quality deterioration like crosstalk and maintaining brightness, enabling a wider viewing angle for multi-view 3D image reproduction.
Implementation Method 1
a lens array unit including a plurality of lenses
Implementation Method 2
allowing pixels to be positioned along the focal surface of the lens
Data Source
AI summary
This disclosure relates to a display device including a lens array unit. An exemplary embodiment of the present inventive concept provides a display device including: a display unit including a plurality of pixels; and a lens array unit including a plurality of lenses, wherein a first lens of the plurality of lenses corresponds to and overlaps two or more of the plurality of pixels, the two or more pixels include a first pixel and a second pixel, the first pixel is closer to an optical axis of the first lens than the second pixel is in a plan view, and a shortest distance between the first pixel and a reference surface that is perpendicular to the optical axis of the first lens is greater than a shortest distance between the reference surface and the second pixel.