Liquid Crystal Display Light-Blocking Pattern Moiré Suppression
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Solution Overview
Problem
Existing liquid crystal display devices with stacked panels struggle to sufficiently suppress moiré interference due to the uniform shape and arrangement of polygonal signal lines in the light control panel.
Innovation Solution
The implementation of a liquid crystal display device with a first and second liquid crystal display panel, where at least one panel includes a light-blocking pattern with inclined lines that are line-symmetrical and alternating in direction, formed from scan and signal wirings, to reduce spatial frequency interference and moiré effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If signal lines are configured as uniform polygonal lines in the light control panel, then the signal lines can be easily manufactured with simple patterns, but moiré interference cannot be sufficiently suppressed
Solution Approach 1:
The patent applies asymmetry by making the light-blocking patterns in the first and second liquid crystal display panels have different shapes. Specifically, the first light-blocking pattern has a first shape while the second light-blocking pattern has a second shape that is different from the first shape. This asymmetric configuration prevents the formation of regular interference patterns between the stacked panels, thereby suppressing moiré interference while maintaining manufacturability.
Solution Approach 2:
The patent applies local quality by varying the shapes of light-blocking patterns at different locations within the display panels. The light-blocking patterns are configured with different shapes in different regions, creating local variations that disrupt the uniformity required for moiré formation. This allows the display to suppress moiré interference while maintaining ease of manufacture through standardized fabrication processes.
2Object-affected harmful factors
If light-blocking patterns with different shapes are used in stacked panels, then moiré interference is suppressed, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the shape parameters of light-blocking patterns rather than changing the fundamental structure. By varying geometric parameters such as line width, spacing, and shape geometry of the light-blocking patterns, the patent achieves moiré suppression while maintaining a relatively simple overall device structure. This approach reduces device complexity compared to more fundamental structural changes.
Data Source
AI summary
A liquid crystal display device includes a first liquid crystal display panel, and a second liquid crystal display panel that overlaps the first liquid crystal display panel. At least one of the first liquid crystal display panel and the second liquid crystal display panel includes a light blocking pattern that is repeatedly arranged and has light blocking properties. The light blocking pattern includes a first light blocking line and a second light blocking line that extend in a predetermined direction. The first light blocking line includes a first incline inclined with respect to the predetermined direction, and a second incline inclined in a direction opposite the first incline with respect to the predetermined direction, and the second light blocking line is adjacent to the first light blocking line and is line-symmetrical, with respect to the predetermined direction, to the first light blocking line. At least one of the first light blocking line and the second light blocking line is formed from one of scan wirings and signal wiring of the first liquid crystal display panel and the second liquid crystal display panel.