Flexible Display Substrate with Recessed Bend for Wearable Stability
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Solution Overview
Problem
Flexible display panels used in wearable devices tend to easily separate from mechanical members due to their resilience force, which compromises their stability and functionality.
Innovation Solution
The display apparatus incorporates a substrate with a bent portion featuring mesa sub-portions and a recessed manufacture sub-portion, along with adhesive layers and a protective film, to distribute resilience forces and reduce the likelihood of separation from mechanical members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive layers are used to fix the flexible display panel to mechanical members, then the panel can be attached to maintain a bent state, but the panel is easily separated due to resilience force
Solution Approach 1:
The substrate is divided into three portions: a first portion, a second portion, and a third bent portion. The third portion is further divided into a first mesa sub-portion and a manufacture sub-portion. This segmentation allows the bent portion to be structurally differentiated, with the manufacture sub-portion forming a recess that reduces resilience force and prevents separation from mechanical members
Solution Approach 2:
The third portion of the substrate is given a localized structural modification through the manufacture sub-portion recess, which creates a specific local property (reduced resilience) at the bent region. This local quality change allows the bent portion to maintain attachment while accommodating the natural resilience of the flexible substrate
2Adaptability or versatility
If the substrate is bent to fit wearable apparatuses, then flexibility and adaptability are improved, but separation from mechanical members occurs due to resilience
Solution Approach 1:
The substrate is segmented into functional portions, with the third portion dedicated to bending. This segmentation allows the flexible display panel to maintain its adaptability for wearable applications while the specific structure of the third portion (with mesa and manufacture sub-portions) ensures reliable attachment by managing resilience forces
Solution Approach 2:
The manufacture sub-portion creates a recessed structure that adds a vertical dimension to the bent portion. This dimensional change allows the substrate to bend while the recess provides a mechanical interlock or stress distribution mechanism that prevents separation from mechanical members
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
This configuration significantly reduces resilience forces and tensile stress, ensuring the flexible display panel remains securely attached to mechanical members, enhancing stability and durability.
Implementation Method 1
The first adhesive layer is arranged on the first surface of the mechanical member. The second adhesive layer is arranged on the second surface of the mechanical member. The first portion of the protective film is arranged on the first adhesive layer. The second portion of the protective film is arranged on the second adhesive layer.
Implementation Method 2
The third portion of the substrate is connected between the first portion of the substrate and the second portion of the substrate and is bent. The third portion of the substrate has a first mesa sub-portion and a manufacture sub-portion.
Data Source
AI summary
A display apparatus includes a substrate, an element layer, a protective film, a mechanical member, a first adhesive layer and a second adhesive layer. An opening of the protective film is located between a first portion of the protective film and a second portion of the protective film. The first portion of the protective film, the second portion of the protective film and the opening of the protective film are respectively overlapped with a first portion of the substrate, a second portion of the substrate and a third portion of the substrate. The first adhesive layer and the second adhesive layer are respectively disposed on a first surface and a second surface of the mechanical member. The third portion of the substrate is connected between the first portion of the substrate and the second portion of the substrate, and the third portion of the substrate is bent.