Autostereoscopic Display Light Control Angle
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Solution Overview
Problem
Conventional 3-D display apparatus without glasses often suffer from discontinuous image display and Moire patterns due to non-uniform luminance distribution across view points, leading to suboptimal image quality.
Innovation Solution
The display apparatus incorporates a light controlling part inclined at a predetermined angle relative to the pixel part, ensuring continuous image period change across view points, thereby achieving uniform luminance distribution and preventing Moire patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light control device divides light on pixels to display different images in multiple view points, then 3-D image display without glasses is achieved, but discontinuous image display and Moire patterns occur due to non-uniform luminance distribution
Solution Approach 1:
The patent introduces a temporal dimension by sequentially switching between different image periods corresponding to different view points. Instead of simultaneously displaying all view points (spatial approach), the system alternates between main viewpoint images and sub viewpoint images over time, creating a time-multiplexed 3-D display that eliminates Moire patterns while maintaining luminance uniformity.
Solution Approach 2:
The patent employs dynamic control of the light control device to sequentially switch between different image periods. The system dynamically adjusts which viewpoint image is displayed at each time slot, creating a time-varying display pattern that prevents the formation of stationary Moire patterns while maintaining perceived luminance uniformity across all view points.
2Adaptability or versatility
If different images are displayed in every view point of the viewer, then multiple views are provided, but black images or ripple marks appear at boundary positions
Solution Approach 1:
The patent ensures continuous display of useful images by carefully designing the switching pattern between main viewpoint and sub viewpoint images. The light control device maintains continuous image output without black screens by ensuring that at any given time, a valid image period is being displayed, and the sequential switching creates the perception of continuous multi-viewpoint 3-D imagery without interruptions or black images.
Solution Approach 2:
The patent uses sub viewpoint images as intermediary elements between main viewpoint images. These sub viewpoint images act as transition states that bridge the gaps between primary viewpoints, preventing abrupt transitions that would cause black images or Moire patterns. The intermediary images smooth the transitions and maintain luminance continuity across viewpoint boundaries.
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 solution enables simultaneous display of main and sub-viewpoint images, improving image quality by maintaining uniform luminance across different view points, effectively eliminating Moire patterns and enhancing the overall display experience.
Implementation Method 1
the light controlling part controls the image period of the image displayed to the viewer to be substantially continuously changed with respect to each view point such that the image displayed to the viewer has substantially uniform luminance distribution
Data Source
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AI summary
A 3D display apparatus includes: a pixel part including a plurality of pixels arranged substantially in a matrix form, where the matrix form includes a unit matrix having X columns in a horizontal direction and Y rows in a vertical direction, where X and Y are natural numbers; and a plurality of light controlling parts inclined with respect to the vertical direction of the pixels on the pixel part and at an inclined angle of θ, where the inclined angle of θ satisfies the following equation: θ=tan-1(M×X / N×Y), where M and N are different natural numbers.