Anisotropic Support Member for Flexible Display Panel Bending
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Solution Overview
Problem
Display devices using plastic or thin glass substrates are prone to breaking under two-dimensional deformation due to brittleness, despite exhibiting high flexibility in one-dimensional bending, limiting their mechanical strength and durability.
Innovation Solution
A display device with a support member that exhibits anisotropic bending strength, encouraging one-dimensional deformation while suppressing two-dimensional deformation, achieved through specific structural designs such as frame members, casing members, and back surface support members with varying thickness and groove configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a plastic substrate or thin glass substrate is used to reduce thickness and weight, then flexibility in one-dimensional bending is improved, but brittleness against two-dimensional deformation increases causing the substrate to break
Solution Approach 1:
The patent employs a thin flexible substrate (plastic or thin glass) that can bend in one dimension while maintaining structural integrity. The substrate is designed as a thin film structure that enables flexibility for display device applications while incorporating support mechanisms to prevent breakage under two-dimensional stress
Solution Approach 2:
The patent uses a composite structure combining the thin substrate with a support member having anisotropic bending strength. This composite system allows the substrate to maintain its flexibility while the support member provides enhanced resistance against two-dimensional deformation and breaking
2Ease of operation
If the substrate is made thinner to enhance flexibility, then ease of bending is improved, but reliability against point load deformation deteriorates
Solution Approach 1:
The patent introduces a support member with anisotropic bending strength that provides localized reinforcement at specific regions of the substrate. The support member has different bending strengths in different directions, offering enhanced support where needed while maintaining overall substrate flexibility
Solution Approach 2:
The patent addresses the two-dimensional deformation problem by introducing a support structure that creates anisotropic bending characteristics. The support member restricts deformation in one dimension while allowing flexibility in another dimension, effectively managing stress distribution
Data Source
AI summary
In a display device which includes a display panel in which a plurality of pixels are arranged on a substrate two-dimensionally and which is configured to display an image thereon, and a support member which supports the display panel, the support member possesses anisotropy in bending strength so as to encourage one-dimensional deformation (bending along only the X direction) of the display panel while suppressing two-dimensional deformation (bending in the X direction as well as the Y direction) of the display panel.