Conductive Film Irregular Mesh Pattern Moiré Suppression
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Solution Overview
Problem
Existing conductive films fail to adequately prevent moiré interference between mesh patterns and pixel array patterns on displays with different emission intensities, leading to inconsistent image quality and inadequate evaluation of moiré visibility across various displays.
Innovation Solution
A conductive film with a random mesh-shaped wiring pattern that considers emission intensity, featuring irregular parallelogram shapes and optimized pitches, overlaps with pixel array patterns to suppress moiré occurrence and improve visibility, regardless of observation distance, by calculating evaluation indicators based on human visual response characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a regular mesh pattern is used for the conductive film, then the manufacturing precision and ease of manufacture are improved, but moiré interference becomes visually perceptible on displays
Solution Approach 1:
The patent applies asymmetry by making the mesh pattern irregular rather than regular. Specifically, the pitch between mesh lines is varied within a predetermined range, and the mesh shape is made irregular within a predetermined range, breaking the symmetry that causes moiré interference while maintaining manufacturability through controlled randomization processes
Solution Approach 2:
The patent applies local quality by introducing local variations in the mesh pattern properties. The pitch and shape are not uniformly changed across the entire pattern but rather vary locally within predetermined ranges, creating an irregular pattern that suppresses moiré while maintaining overall structural integrity and ease of manufacture
2Object-affected harmful factors
If the mesh pattern is made irregular to suppress moiré, then moiré visibility is improved, but the manufacturing precision and pattern consistency deteriorate
Solution Approach 1:
The patent applies parameter changes by systematically varying the pitch and shape parameters within predetermined ranges. This controlled variation transforms the regular mesh pattern into an irregular one that suppresses moiré, while the predetermined ranges ensure that manufacturing precision is maintained within acceptable limits
Solution Approach 2:
The patent applies dynamics by introducing controlled randomness into the mesh pattern. Rather than a static regular pattern, the pitch and shape dynamically vary within predetermined ranges, creating an adaptive irregular pattern that suppresses moiré interference while remaining manufacturable
3Measurement precision
If the conductive film is designed for a specific display emission intensity, then the moiré suppression is optimized for that display, but the adaptability to displays with different emission intensities deteriorates
Solution Approach 1:
The patent applies universality by designing a mesh pattern with irregular pitch and shape that suppresses moiré across multiple display types and emission intensities. The predetermined ranges for pitch and shape variations are selected to provide broad coverage, making the conductive film adaptable to various displays rather than optimized for a single specific display
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
The conductive film effectively prevents moiré interference and enhances image quality on displays with different emission intensities, ensuring improved visibility and consistent evaluation of moiré visibility across various displays.
Implementation Method 1
a moiré caused by interference between a mesh pattern and a pixel array pattern
Data Source
AI summary
In a conductive film, a method of evaluating a pattern in the conductive film, and a display device, thin metal lines of at least one wiring portion of two wiring portions is formed in a wiring pattern where the opening portions, of which angles are maintained and pitches are made to be irregular with respect to rhomboid shapes of a regular rhomboid wiring pattern, have parallelogram shapes. In frequencies of the moirés that are equal to or less than a frequency threshold value and are calculated for each color from two peak frequencies and two peak intensities of 2DFFT spectra of image data of the wiring patterns of the two wiring portions and luminance image data of pixel array patterns of the respective colors at the time of lighting up for each single color, the wiring patterns of the two wiring portions are formed such that an indicator of evaluation of moirés is equal to or less than an evaluation threshold value. The indicator of evaluation is calculated from evaluation values of the moirés of the respective colors obtained by applying human visual response characteristics in accordance with an observation distance to intensities of the moirés equal to or greater than an intensity threshold value.