Curved Display Light Leakage Prediction Under Bending Stress
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Solution Overview
Problem
The intensity of light leakage in curved display devices cannot be accurately calculated, leading to inadequate compensation and increased manufacturing costs due to suboptimal design.
Innovation Solution
A method involving a finite element model is used to calculate light leakage intensity by measuring parameter values, establishing a global XY coordinate system, applying bending deformation, calculating stress components, and obtaining a complex amplitude matrix to determine the light leakage intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved display panel is designed with larger curvature to achieve larger viewing angles, then the viewing angle is improved, but the bending stress on glass and layers increases causing light leakage
Solution Approach 1:
The patent applies preliminary action by calculating the light leakage intensity during the design phase before actual manufacturing and assembly. The finite element model is established and analyzed in advance to predict the light leakage problem, allowing design parameters to be adjusted proactively to prevent excessive light leakage while maintaining the desired curvature and viewing angles.
Solution Approach 2:
The patent introduces an intermediary approach by using a finite element model as a virtual prototype between the design concept and the physical curved display panel. This digital model allows simulation and analysis of stress distribution and light leakage effects without building the actual physical structure, enabling iterative optimization of design parameters.
2Shape
If the bending radius is reduced to increase curvature, then the viewing angle is improved, but the stress on layers increases causing photoelastic effect and light leakage
Solution Approach 1:
The patent applies preliminary action by performing stress analysis and light leakage calculation during the design phase before manufacturing. The finite element model is used to predict the stress distribution in layers under bending conditions, allowing design parameters to be optimized in advance to prevent excessive stress and photoelastic effects while achieving the desired curvature.
Solution Approach 2:
The patent applies parameter changes by systematically adjusting design parameters such as curvature radius, layer thickness, and material properties in the finite element model to find optimal values. This allows exploration of different parameter combinations to achieve the desired viewing angle while keeping stress and light leakage within acceptable limits.
3Manufacturing precision
If design parameters are adjusted to compensate for light leakage, then the display quality is improved, but the design complexity and manufacturing cost increase
Solution Approach 1:
The patent applies preliminary action by performing light leakage calculation and analysis during the design phase before manufacturing and assembly. This early prediction allows design parameters to be optimized proactively, avoiding the need for complex post-manufacturing adjustments and reducing overall design complexity by establishing clear design guidelines based on quantitative analysis.
Solution Approach 2:
The patent introduces feedback by using the finite element model to simulate and predict light leakage effects, then using these results to adjust design parameters iteratively. This closed-loop approach allows continuous optimization of design parameters to achieve the desired display quality while controlling design complexity through systematic analysis.
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 method provides an accurate and efficient calculation of light leakage intensity, enabling better compensation and reducing manufacturing costs while improving display device performance.
Implementation Method 1
applying a bending deformation force to the finite element model, and extracting a stress component value generated on a surface of one of the sub-layers corresponding to a side of the finite element model when the finite element model is deformed
Implementation Method 2
obtaining a phase difference generated by an incident light on each of the sub-layers according to the principal stress of the one of the sub-layers
Data Source
AI summary
The present invention provides a method of calculating an intensity of light leakage by extracting geometric design parameters of a curved display device and establishing a finite element model according to the geometric design parameters. The finite element model is subjected to bending deformation, and according to an obtained stress and a conversion relationship, a complex amplitude matrix and the intensity of light leakage of the curved display device are obtained. As such, the intensity of light leakage calculated in the present invention is more accurate, and a better reference can be provided for a design of the curved display device.