Autostereoscopic Display Pixel Edge Orientation
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Solution Overview
Problem
Autostereoscopic display devices face issues with light intensity variations and cross talk between views due to the slanted lenticular elements, which reduce image quality and create undesirable moire interference.
Innovation Solution
The lenticular element axes remain slanted at an angle to the display pixel columns, while the pixel display areas are modified to have edges parallel to the lenticular element axes, either through an additional mask arrangement or by designing non-conventional pixel layouts with edges parallel to the lenticular element axes, reducing light intensity variations and cross talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenticular elements are slanted at an angle to the display pixel columns, then the number of views displayed is increased, but light intensity variations and moire interference occur
Solution Approach 1:
The pixel display areas are given different orientations locally - specifically, their edges are made parallel to the lenticular element axes rather than being uniformly aligned with display pixel columns. This local reorientation of pixel edges at the interface between pixels and lenticules eliminates the moire interference and light intensity variations while preserving the slanted lenticular configuration that enables multiple views.
2Adaptability or versatility
If lenticular elements are slanted at an angle to the display pixel columns, then the number of views displayed is increased, but cross talk between views is introduced
Solution Approach 1:
By locally reorienting the pixel display area edges to be parallel to the lenticular element axes, the patent creates optimal optical coupling at the pixel-lenticule interface. This local adaptation prevents light from adjacent pixel columns from leaking into neighboring views, thereby eliminating cross talk while maintaining the multi-view capability provided by the slanted lenticular arrangement.
3Object-affected harmful factors
If pixel display areas are modified to have edges parallel to lenticular element axes, then light intensity variations and cross talk are reduced, but device complexity increases
Solution Approach 1:
The patent combines the pixel definition function and the light directionality function into a single integrated mask structure. The mask arrangement simultaneously defines the pixel display area boundaries and orients their edges parallel to the lenticular element axes, while also serving as the structural support for the lenticular elements. This merging of functions reduces device complexity compared to having separate components for each function.
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 configuration allows for increased number of views without sacrificing horizontal resolution, reducing light intensity variations and cross talk, resulting in improved image quality and a smoother transition between views.
Implementation Method 1
The lenticular elements extend in the column direction of the display panel, with each lenticular element overlying a respective group of two or more adjacent columns of display pixels... The lenticular sheet directs these two slices and corresponding slices from the display pixel columns associated with the other lenticules, to the left and right eyes of a user positioned in front of the sheet
Data Source
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AI summary
An autostereoscopic display device comprises a display panel having an array of display pixels for producing a display. The display pixels are arranged in orthogonal rows and columns. The device also comprises an array of parallel lenticular elements positioned over the display panel. The lenticular elements have optical focal axes that are slanted at an angle to the display pixel columns. Display areas of the display pixels have edges that are substantially parallel to the lenticular element axes so that pixels of different views are prevented to be projected to the same niewing zone , thereby preventing crosstalk between views and reducing light intensity variations (due to varying amount of the opaque black mask which is imaged. The light intensity output also varies across each pixel display area in a direction perpendicular to the lenticular element axes.