Curved Display Conductive Line Openings to Prevent Cracking
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Solution Overview
Problem
Existing LED display devices face issues with conductive lines or electrodes cracking during the formation of curved display devices due to mechanical stress.
Innovation Solution
The conductive lines and electrodes in the display devices are designed with undulating shapes and/or include openings to enhance mechanical properties, reducing the likelihood of cracking during bending or curvature formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive lines are made straight and continuous, then electrical connectivity is ensured, but mechanical stress during bending causes cracking
Solution Approach 1:
The conductive line is divided into multiple segments by introducing openings (first openings and second openings) along its length. These openings segment the continuous conductive line into discrete sections that can independently accommodate mechanical stress during bending, preventing crack propagation while maintaining electrical connectivity through the segmented path.
Solution Approach 2:
The conductive line is designed with a porous structure containing multiple openings distributed along its path. This porous configuration allows the conductive material to flex and deform during bending without developing cracks, as the openings provide stress relief zones that prevent the formation of continuous crack paths.
2Adaptability or versatility
If conductive lines are made with undulating shapes, then mechanical flexibility is improved, but manufacturing complexity increases
Solution Approach 1:
The conductive line is designed with an undulating or curved shape instead of a straight configuration. This curved geometry allows the conductive line to naturally accommodate bending stresses by distributing mechanical loads along its length, improving flexibility and crack resistance while the regular undulating pattern maintains manufacturing feasibility.
3Length of moving object
If conductive lines are made thinner, then device thickness is reduced, but mechanical durability decreases
Solution Approach 1:
The conductive line structure incorporates local variations in geometry through strategically placed openings at specific locations along its path. These localized structural modifications allow the conductive line to maintain thin overall dimensions while providing stress relief zones that enhance durability and prevent cracking during bending operations.
Data Source
AI summary
An electronic device is provided. The electronic device includes a substrate, a metal layer, a plurality of diodes, a first transistor, and a second transistor. The metal layer is overlapped with the substrate and includes a plurality of holes. The diodes are disposed on the substrate. The first transistor and the second transistor are disposed on the substrate and electrically connected to one of the diodes, the gate electrodes of the first transistor and the second transistor overlap a same semiconductor, and the one of the diodes overlaps the first transistor and doesn't overlap the second transistor.