Aperture Shape Design for Kinematic Parallax in Displays
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Solution Overview
Problem
Existing display devices face challenges in reproducing kinematic parallax and maintaining high realism without increasing device size, as they require special pixel structures that lead to increased costs and reduced resolution due to complex wiring and diffraction issues.
Innovation Solution
A display device with a stripe structure of subpixels arranged in a specific pattern, where subpixels of the same color are aligned in a first direction, and apertures are designed to allow uniform areas of subpixels to be observed, reducing numerical aperture in a second direction, allowing for kinematic parallax reproduction without a special pixel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid crystal panel with special pixel structure (3×3 subpixels in checkerboard pattern) is used to achieve linear blending, then continuous kinematic parallax can be reproduced, but the cost increases and resolution drops due to increased wiring and diffraction
Solution Approach 1:
The patent changes the aperture shape parameter from conventional symmetric designs to asymmetric shapes with different widths in horizontal and vertical directions. This parameter modification enables the aperture to selectively control light from different subpixels, achieving linear blending without requiring the complex 3×3 checkerboard pixel structure, thus maintaining resolution while reproducing continuous kinematic parallax
Solution Approach 2:
The patent introduces an optical barrier with specifically designed apertures as an intermediary element between the light source and the observer. These apertures act as mediators that control which subpixels are visible from different viewing angles, enabling linear blending effect without modifying the fundamental pixel structure of the display panel
2Reliability
If projection-type optical system is used to perform linear blending, then kinematic parallax can be reproduced, but the device size increases
Solution Approach 1:
The patent extracts the linear blending function from complex projection-type optical systems and implements it directly through the aperture shape design in the optical barrier. By taking out the blending function and embedding it in the barrier structure itself, the system eliminates the need for additional projection optics, significantly reducing device size while maintaining kinematic parallax reproduction capability
Solution Approach 2:
The patent merges the functions of the optical barrier and the linear blending mechanism into a single integrated component. The aperture shape itself performs both the blocking function and the blending function, combining multiple functions into one element and thereby reducing the overall device size
3Manufacturing precision
If more wiring and driving transistors are added to maintain resolution with divided pixels, then pixel structure complexity increases, but numerical aperture decreases making display darker
Solution Approach 1:
The patent uses the aperture shape as a template or copy that defines which subpixels should be visible from each viewing angle. Instead of physically dividing each pixel into 3×3 subpixels with separate wiring, the aperture shape creates a virtual copying effect where the same physical subpixels are selectively activated based on viewing angle, maintaining resolution without additional wiring 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
Enables the reproduction of kinematic parallax and high realism while preventing an increase in device size, maintaining resolution, and avoiding the complexities of special pixel structures.
Implementation Method 1
in high-resolution displays, diffraction caused by the pixel openings makes it impossible to perform linear blending correctly
Data Source
AI summary
A display device which can reproduce kinematic parallax and express a high sense of realism without using image display means are provided. The display device includes an image display unit having a stripe structure having subpixels of a plurality of colors disposed so that subpixels of the same color are arranged in a first direction and enabling an observer to observe, through an aperture, an image formed by pixels, each pixel being constituted by the subpixels of a plurality of colors. The aperture has a shape that has been smoothed to reduce a number of corners in which areas of the subpixels of the plurality of colors which can be seen through the aperture are uniform, and in which a numerical aperture decreases along a second direction orthogonal to the first direction. A plurality of the apertures are provided so as not to overlap with each other.