Inclined Sub-Pixel Arrangement for Autostereoscopic Display
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Solution Overview
Problem
Conventional display screens suffer from artifacts such as interlines, colored fringes, and moiré patterns, especially when used for autostereoscopic displays, due to their vertical sub-pixel structure, which becomes visible at short distances and affects image quality.
Innovation Solution
The sub-pixels are inclined at an angle relative to the vertical, with their short ends offset between rows of different colors, breaking the vertical alignment and allowing them to fit within parallelograms or rotated rectangles, reducing the visibility of black lines and improving homogeneity and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sub-pixels are arranged in vertical columns with continuous alignment, then manufacturing is simplified and structure is regular, but artifacts such as interlines, colored fringes, and moiré patterns become visible at short distances
Solution Approach 1:
The patent applies asymmetry by tilting the sub-pixel columns relative to the vertical direction. Instead of arranging sub-pixels in straight vertical columns, the columns are inclined at a specific angle, which breaks the symmetry of the conventional display structure. This asymmetric arrangement disrupts the periodic patterns that cause moiré effects and reduces the visibility of interlines and colored fringes when viewed at short distances, while maintaining manufacturing feasibility through systematic geometric transformation.
Solution Approach 2:
The patent introduces a new dimensional parameter by tilting the sub-pixel columns at an angle relative to the vertical axis. This transforms the conventional two-dimensional grid arrangement into a three-dimensional oriented structure when viewed from the front. By adding this angular dimension, the display eliminates the harmful periodic patterns caused by vertical alignment, as the human visual system is less sensitive to oblique structures than to vertical or horizontal ones.
2Object-affected harmful factors
If sub-pixels are tilted at an angle to reduce artifacts, then image quality and homogeneity improve, but the structure becomes more complex and alignment precision requirements increase
Solution Approach 1:
The patent changes the geometric parameters of the sub-pixel arrangement by introducing a specific tilt angle. This parameter modification transforms the conventional vertical column structure into an inclined structure, which reduces artifact visibility. The angle is chosen to optimize the balance between artifact reduction and structural simplicity, ensuring that while the structure is no longer vertically aligned, it maintains regularity and manufacturability through systematic geometric transformation.
3Manufacturing precision
If sub-pixels are arranged to break vertical alignment, then resolving power for autostereoscopy improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the display into multiple inclined column groups, each tilted at a specific angle. This segmentation allows the complex tilted structure to be manufactured through systematic positioning of discrete column segments rather than requiring continuous curved alignment. The regular geometric pattern of the tilt enables precision to be achieved through repeatable modular positioning rather than complex continuous alignment.
Data Source
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AI summary
An advantageously flat display screen (E) comprising a matrix of pixels (P) arranged in lines and in columns perpendicular to said lines, each pixel comprising three or more sub-pixels (SP) of different colours (R, V, B) aligned in the direction of said lines and having an elongated shape, characterised in that each of said sub-pixels has a main dimension forming a non-zero angle relative to the direction of said columns. The screen can advantageously be provided with an angular selection network for autostereoscopic display of which the main axes form an angle a relative to the direction of said columns and of which the pitch makes it possible to cover M≥2 sub-pixels.