Window Coating Curing Gradient for Flexible Display Impact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices with flexible panels face challenges in achieving adequate impact resistance while maintaining a thin window coating layer for durability and cost-effectiveness, as thicker layers compromise bending radius and increase manufacturing costs.
Innovation Solution
A display device with a window coating layer having a curing rate gradient, where the lower surface has a curing rate of 10% to 50% and the upper surface has a curing rate of 98% or less, formed by controlling energy transfer during the curing process, allowing for a thinner, more durable, and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the window coating layer thickness is increased to improve impact resistance, then durability is improved, but the bending radius is compromised and manufacturing cost increases
Solution Approach 1:
The patent applies different curing rates to different regions of the window coating layer. The lower surface (contacting the display panel) has a curing rate of 10-50% to maintain flexibility and bending radius, while the upper surface has a curing rate of 98% or less to provide adequate impact resistance. This local differentiation allows the same layer to serve multiple protective functions without compromising bending performance.
Solution Approach 2:
The patent changes the curing rate parameter through controlled energy transfer during the curing process. By adjusting energy distribution, the lower surface achieves partial curing (10-50%) while the upper surface achieves near-complete curing (98% or less). This parameter change enables the thin window coating layer to maintain both flexibility and impact resistance without increasing thickness.
2Strength
If the window coating layer thickness is increased to improve impact resistance, then durability is improved, but manufacturing cost increases
Solution Approach 1:
Instead of uniformly curing the entire window coating layer, the patent applies localized curing rates. The lower surface receives controlled partial curing (10-50%) to maintain flexibility, while the upper surface receives controlled near-complete curing (98% or less) for impact protection. This approach achieves adequate impact resistance with thinner material usage, reducing manufacturing cost.
Solution Approach 2:
The patent optimizes the curing rate parameter through controlled energy transfer to achieve the desired curing distribution. By adjusting energy parameters during curing, the process achieves cost-effective manufacturing with reduced material consumption while maintaining adequate impact resistance through the optimized curing gradient.
3Ease of manufacture
If uniform curing is applied to the window coating layer, then manufacturing simplicity is maintained, but impact resistance is insufficient
Solution Approach 1:
The patent transitions from uniform curing to localized differential curing. The lower surface is cured at 10-50% to maintain flexibility and bonding, while the upper surface is cured at 98% or less to provide impact resistance. This local quality differentiation enhances impact protection while the curing process remains relatively simple through controlled energy transfer.
Solution Approach 2:
The patent implements parameter change during curing by controlling energy transfer to create a curing rate gradient. The lower surface achieves partial curing (10-50%) while the upper surface achieves near-complete curing (98% or less). This parameter control strategy improves impact resistance without significantly complicating the manufacturing process.
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 solution enhances impact resistance and reduces manufacturing costs by maintaining durability and flexibility while minimizing material usage and thickness, enabling the production of ultra-small, efficient display devices.
Implementation Method 1
controlling the curing rate of a lower surface of a window coating layer... the window coating layer has a curing rate increased along a thickness direction... the lower surface has a curing rate of about 10% to about 50%, and the upper surface has a curing rate of about 98% or less
Data Source
AI summary
A display device includes a display panel, and a window coating layer having a lower surface in contact with an upper surface of the display panel, and an upper surface opposed to the lower surface, wherein the curing rate of the window coating layer increases along a thickness direction, the lower surface has a curing rate of about 10% to about 50%, and the upper surface has a curing rate of about 98% or less.