Display Panel Moire Fringe Elimination via Asymmetric Light Control
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Solution Overview
Problem
Moire fringe interference occurs in display panels with stacked layers having similar grid patterns, affecting visual experience and display quality.
Innovation Solution
A display panel design featuring a light control panel with fold lines that intersect with grid lines of the liquid crystal panel, allowing for controlled backlight illumination and eliminating moire fringe by creating a regular and uniform light control pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If two stacked layers are designed with similar grid patterns for structural alignment, then manufacturing precision is improved, but moire fringe interference occurs affecting display quality
Solution Approach 1:
The patent applies asymmetry by designing the light control grid pattern with different characteristics compared to the display panel grid pattern. Specifically, the light control panel uses a grid pattern where the spacing between adjacent light control electrodes in the first direction is different from the spacing in the second direction, creating an asymmetric structure that breaks the periodicity responsible for moire fringe formation while maintaining manufacturing alignment
2Object-affected harmful factors
If a light control panel is added to eliminate moire fringe, then display quality is improved, but device complexity increases
Solution Approach 1:
The light control panel serves multiple functions: it controls backlight illumination to improve display quality, eliminates moire fringe interference through its asymmetric grid pattern, and can potentially serve as a touch sensor layer or other functional layer, making the additional component justify its presence through multi-functionality
Data Source
Figure 1A~1C
Figure 2~3A
Figure 3B~3C
AI summary
A display panel (10) and a display device (100). The display panel (10) comprises a display liquid crystal panel (1) and a light control panel (2) stacked on top of each other. The display liquid crystal panel (1) comprises a plurality of grid lines (3). The plurality of grid lines (3) comprises a plurality of first grid lines (31) extending in a first direction and a plurality of second grid lines (32) extending in a second direction, wherein the first direction and the second direction intersect each other. The plurality of first grid lines (31) and the plurality of second grid lines (32) define a plurality of sub-pixel units. The light control panel (2) is configured to allow backlight to be incident on the display liquid crystal panel (1) therethrough and comprises a plurality of signal lines (4). The plurality of signal lines (4) comprises a plurality of first signal lines (41) extending in the first direction and a plurality of second signal lines (42) extending in the second direction, and the plurality of first signal lines (41) and the plurality of second signal lines (42) define a plurality of light control units (7). At least a portion of the plurality of signal lines (4) are polylines. The display panel (10) can achieve a better effect of moire pattern removal by controlling the direction and intensity of the backlight incident on the display liquid crystal panel (1).