3D Display Panel Asymmetric Pixel Arrangement Moire Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Moiré interference in 3D display panels, caused by uniform pixel and lens arrangements, degrades image quality and can interrupt driving in 3D head-up displays by generating low-frequency patterns visible to users.
Innovation Solution
The solution involves a display panel with pixels having a uniform pattern determined by subpixels and placement spaces, including spacers, where the repetition interval of the pattern is outside the cognitive frequency band, ensuring that moiré frequencies are not visible to users, and an optical layer controls light direction to enhance 3D image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pixels are uniformly arranged on the display panel, then manufacturing is simplified, but moiré interference occurs degrading image quality
Solution Approach 1:
The patent applies asymmetry by arranging pixels in a non-uniform pattern where the repetition interval varies in different directions. Specifically, the pixel arrangement has a first repetition interval in the horizontal direction and a second repetition interval in the vertical direction, with the ratio between them being irrational. This asymmetric arrangement prevents the formation of moiré patterns while maintaining manufacturability.
Solution Approach 2:
The patent changes the parameter of pixel repetition interval from uniform to non-uniform by using irrational ratio between horizontal and vertical intervals. This parameter modification effectively eliminates moiré interference while keeping the manufacturing process relatively simple.
2Adaptability or versatility
If a lens is added to create 3D display, then 3D image capability is achieved, but moiré interference is intensified
Solution Approach 1:
The patent combines the asymmetric pixel arrangement with the lens array structure. The lens array has a specific pitch that, when combined with the irrational ratio pixel arrangement, prevents the formation of visible moiré patterns. This allows 3D display functionality to be achieved without the harmful moiré effect that would normally intensify with lens addition.
3Object-affected harmful factors
If complex dual domain structures are used to reduce moiré, then moiré interference is reduced, but device complexity increases
Solution Approach 1:
Instead of using complex dual domain structures, the patent achieves moiré reduction by simply changing the pixel arrangement parameters to have an irrational ratio between horizontal and vertical repetition intervals. This parameter-based solution is much simpler than structural complexity while achieving the same moiré elimination effect.
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 approach effectively reduces or eliminates moiré interference from the cognitive frequency band, improving 3D image quality and maintaining display panel thickness by adjusting subpixel sizes and shapes based on spacer placement, thereby enhancing the viewing experience without requiring complex dual domain structures.
Implementation Method 1
an optical layer controls light direction to enhance 3D image quality
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3A~3C
AI summary
Provided are a display panel and a three-dimensional (3D) display device and a 3D head-up display (HUD) device using the display panel. The display panel includes a plurality of pixels, and a plurality of placement spaces provided between the plurality of pixels, wherein the plurality of pixels are uniformly provided in the display panel based on a pattern corresponding to the plurality of placement spaces, and wherein a frequency corresponding to a repetition interval of the pattern is outside of a cognitive frequency band that is visible to a user.