Flexible Display Through Hole Wire Routing for Compact Frame Design
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Solution Overview
Problem
Flexible display devices face damage from bending stress on wires, which can cause cracks, and existing designs struggle to reduce frame size without compromising electrical connections.
Innovation Solution
A display device with a resin substrate featuring through holes in the terminal area, where wires extend from the circuit layer inside these holes to connect with electronic components on the opposite side, eliminating the need for wire bending and reducing frame size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the flexible substrate is bent to reduce frame size and position electronic components on the back side, then the frame size is reduced and components are compactly arranged, but the wires on the flexible substrate are damaged due to bending stress
Solution Approach 1:
The patent divides the substrate into distinct functional regions: a flexible substrate for bending and positioning electronic components, and a rigid substrate that remains flat to support the circuit layer and wires. This segmentation allows the flexible substrate to be bent for size reduction while the rigid substrate maintains structural integrity and prevents wire damage.
Solution Approach 2:
The patent introduces a rigid substrate as an intermediary between the flexible substrate and the circuit layer. The rigid substrate serves as a stable platform that holds the wires in place, preventing them from being damaged by bending stresses while still allowing the flexible substrate to be bent for compact arrangement of electronic components.
2Length of moving object
If wires are bent to accommodate the flexible substrate bending, then the frame size is reduced, but cracks occur on the wires due to bending stress
Solution Approach 1:
The patent separates the bending function (flexible substrate) from the wire support function (rigid substrate). This segmentation ensures that wires are not subjected to bending stresses, maintaining their strength while still achieving frame size reduction through flexible substrate bending.
Solution Approach 2:
The rigid substrate acts as an intermediary that protects wires from bending stresses. It provides a stable platform that holds wires in place while the flexible substrate bends, preventing wire damage and maintaining wire strength.
3Area of stationary object
If the frame size is reduced by bending the flexible substrate, then compactness is improved, but wire damage from bending stress occurs
Solution Approach 1:
The patent divides the substrate system into flexible and rigid portions, allowing the flexible substrate to be bent for compact arrangement while the rigid substrate protects wires from bending stresses, thus eliminating the harmful effect of bending stress on wires.
Solution Approach 2:
The rigid substrate serves as a protective intermediary that shields wires from bending stresses. It allows the flexible substrate to be bent for frame size reduction while maintaining a stress-free environment for the wires, eliminating the harmful bending stress effect.
Data Source
AI summary
A display device includes a resin substrate including a through hole in a terminal area around a display area in which an image is displayed, a circuit layer including a thin film transistor and disposed in the display area on the resin substrate, a wire extending from the circuit layer and formed inside of the through hole, and an IC driver disposed on a side of the resin substrate opposite to a side on which the circuit layer is disposed. The IC driver includes a terminal that protrudes into the through hole and is in contact with the wire formed inside of the through hole such that the IC driver and the circuit layer are electrically connected to each other.