3D Display Array Substrate Parallelogram Pixel Moire Reduction
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Solution Overview
Problem
Naked-eye stereo display technologies suffer from Moire fringes due to non-uniform brightness in the vertical direction caused by irrational transverse displacement of pixel units, leading to periodical non-uniform brightness and a compromised 3D display effect.
Innovation Solution
An array substrate with non-equilateral parallelogram sub-pixel units, where each row is inclined in the same direction, with top and bottom sides forming overlapping projections, ensuring equal line segments when intersected by a perpendicular line, resulting in a uniform ratio of display zones to non-display zones in the grating, thus achieving periodic uniform brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transverse displacement of irrational number multiple of pixel unit width is applied to each row relative to preceding row, then ratio of display zones to non-display zones in grating slits becomes more uniform, but periodical non-uniform brightness appears in vertical direction causing Moire fringes
Solution Approach 1:
The patent applies asymmetry by using non-equilateral parallelogram sub-pixel units instead of symmetric rectangular pixels. The sub-pixel units are inclined at a specific angle θ (0 < θ < 90°) relative to the horizontal direction, creating an asymmetric arrangement that eliminates the periodic non-uniform brightness pattern. This asymmetric inclination disrupts the regular alternation of bright and dark fringes, thereby reducing Moire effects while maintaining uniform display characteristics.
2Stability of the object's composition
If rational number multiple of pixel unit width is used for transverse displacement, then pixel arrangement remains uniform, but ratio of display zones to non-display zones in grating slits becomes non-uniform causing Moire fringes
Solution Approach 1:
The patent resolves this contradiction by introducing asymmetric inclination of sub-pixel units. Instead of using rational displacement that maintains regular pixel grids, the sub-pixel units are rotated by an irrational angle θ, creating an asymmetric pattern that simultaneously achieves uniform pixel distribution and uniform display zone ratios in the grating system.
Solution Approach 2:
The patent changes the geometric parameters of pixel units from rectangular to non-equilateral parallelogram shape, and introduces an inclination angle parameter θ. This parameter change transforms the pixel arrangement from a regular grid to an inclined asymmetric pattern, which optimizes the display zone to non-display zone ratio uniformity while maintaining overall pixel distribution uniformity.
3Illumination intensity
If sub-pixel units are arranged with irrational angle inclination, then uniform brightness in vertical direction is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that the inclination angle θ should satisfy 0 < θ < 90°, providing a broad acceptable range rather than requiring a single precise irrational value. This parameter specification balances the need for asymmetric arrangement with practical manufacturing capabilities, allowing tolerances while achieving the desired uniform brightness effect.
Data Source
AI summary
The invention discloses an array substrate, a 3D display panel and a 3D display device. The array substrate includes a plurality of sub-pixel units arranged in an array. Each of the sub-pixel units has a shape of a non-equilateral parallelogram having two short sides and two long sides. The two short sides are the top side and the bottom side. The sub-pixel units in a same row are inclined in the same direction at a same inclination angle with respect to a vertical direction. The top sides of the sub-pixel units in the same row lie on a straight line. The projection of the top side of each of the sub-pixel units in the vertical direction lies on and overlaps with the bottom side of an adjacent sub-pixel unit.