Flexible Substrate Recess for Bezel-less Electronic Device
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Solution Overview
Problem
Flexible substrates in electronic devices face damage from excessive bending due to outward pulling forces, limiting the design to maintain a bezel size and preventing seamless or bezel-less designs.
Innovation Solution
Incorporating a recess on the flexible substrate that overlaps the substrate structure, reducing the outward pulling force on the circuit layer when bent, allowing the substrate to lean against the lateral surface without damaging the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the flexible substrate is bent excessively to minimize bezel size, then the bezel size is reduced, but the circuit and components in the bent part are damaged
Solution Approach 1:
The flexible substrate is divided into a first region (flat area with circuit) and a second region (bending area without circuit). This segmentation allows the substrate to be bent in the second region without damaging circuit components, as the circuit is confined to the first region that remains flat during bending operations.
Solution Approach 2:
Different regions of the flexible substrate are assigned different functions: the first region maintains a flat quality to protect circuit integrity, while the second region is designed to be flexible for bending. This local differentiation of substrate properties enables bezel-less design without compromising circuit safety.
2Reliability
If the flexible substrate is kept flat to protect circuit integrity, then the circuit is protected from damage, but the bezel size cannot be minimized
Solution Approach 1:
The flexible substrate is divided into a first region (flat area with circuit) and a second region (bending area without circuit). This segmentation allows the substrate to be bent in the second region without damaging circuit components, as the circuit is confined to the first region that remains flat during bending operations.
Solution Approach 2:
The flexible substrate extends beyond the lateral boundaries of the first substrate structure into a second region. This dimensional extension allows the substrate to bend in areas where no circuit exists, enabling the bezel to be minimized while keeping the circuit-protected region flat.
3Adaptability or versatility
If the flexible substrate extends beyond the substrate structure lateral, then seamless design is achieved, but the substrate becomes vulnerable to damage during bending
Solution Approach 1:
The flexible substrate is divided into a first region (flat area with circuit) and a second region (bending area without circuit). This segmentation allows the substrate to be bent in the second region without damaging circuit components, as the circuit is confined to the first region that remains flat during bending operations.
Solution Approach 2:
The outward pulling force that normally causes damage to the flexible substrate during bending is converted into a beneficial effect. By positioning the flexible substrate to lean against the lateral surface of the first substrate structure during bending, the force is directed away from the circuit region, protecting it while enabling the substrate to extend beyond the substrate structure lateral for seamless design.
4Length of stationary object
If the flexible substrate leans against the lateral surface during bending, then bezel-less design is enabled, but outward pulling force damages the circuit layer
Solution Approach 1:
The flexible substrate is divided into a first region (flat area with circuit) and a second region (bending area without circuit). This segmentation allows the substrate to be bent in the second region without damaging circuit components, as the circuit is confined to the first region that remains flat during bending operations.
Solution Approach 2:
The flexible substrate extends beyond the lateral boundaries of the first substrate structure into a second region. This dimensional extension allows the substrate to bend in areas where no circuit exists, enabling the bezel to be minimized while keeping the circuit-protected region flat.
Data Source
AI summary
An electronic device is disclosed, which includes a first substrate structure, a flexible substrate and a first recess. The flexible substrate is disposed on the first substrate structure. The first recess is disposed on a first surface of the flexible substrate, and the first surface is close to the first substrate structure, wherein the first recess at least overlaps the first substrate structure.