Stretchable Display Panel Image Correction With Auxetic Expansion
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Solution Overview
Problem
Stretchable display devices with positive Poisson's ratio distort images when stretched due to contraction in the perpendicular direction, requiring complex frame configurations for two-axis stretching.
Innovation Solution
A stretchable display panel device with a negative effective Poisson's ratio and a measurement unit to measure strain ratios, coupled with a correction unit to adjust images based on these ratios, ensuring uniform expansion in both directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a stretchable display device with positive Poisson's ratio is stretched, then the display device can be expanded, but the image becomes distorted due to contraction in the perpendicular direction
Solution Approach 1:
The patent applies parameter changes by transforming the Poisson's ratio from positive to negative through structural design. The stretchable display device uses a unique microstructure that enables negative Poisson's ratio behavior, causing the material to expand in both longitudinal and transverse directions when stretched, thereby preventing image distortion while maintaining expandability
Solution Approach 2:
The patent employs composite materials by combining rigid display components with flexible stretchable materials. The display device integrates a rigid substrate containing the display elements with a flexible substrate having negative Poisson's ratio, creating a composite structure that enables both stretching capability and image accuracy preservation
2Manufacturing precision
If stretching is performed along two axes simultaneously, then image distortion can be corrected, but the display frame configuration becomes complex
Solution Approach 1:
The patent changes the fundamental parameter of Poisson's ratio to negative, which fundamentally alters the deformation behavior. This single parameter change eliminates the need for complex two-axis stretching mechanisms, as the negative Poisson's ratio material naturally expands uniformly in all directions during stretching, simplifying the frame configuration to a single-axis stretchable design
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 device maintains image accuracy by correcting distortions based on strain ratios, allowing for uniform expansion without complex framing, thus displaying undistorted images during stretching.
Implementation Method 1
the stretchable display panel unit overall has a uniform strain ratio and has a negative effective Poisson's ratio
Data Source
AI summary
Proposed are a stretchable display panel device capable of effectively correcting an image according to a strain ratio and a method of correcting the image. The stretchable display panel device includes a stretchable display panel, a measurement unit, and a correction unit. The measurement unit measures the strain ratio of the stretchable display panel. The correction unit corrects the image on the stretchable display panel on the basis of the strain ratio. The expandable and contractible display panel overall has a uniform strain ratio and has a negative effective Poisson's ratio. The strain ratio is a strain ratio in a first direction.