Circuit Driving Element Crack Prevention Layer for Flexible Displays
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Solution Overview
Problem
Flexible display apparatuses face the challenge of cracks in driving chips when the circuit driving element is bent, as existing technologies do not adequately prevent damage during deformations.
Innovation Solution
A circuit driving element with a driving chip having a long axis vertical to the bending axis and a crack prevention layer covering the entire top surface of the chip, which is wider than the chip itself, is integrated into a non-display area of a display panel and bent along the bending axis to prevent cracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the circuit driving element is bent to enable flexible display apparatuses, then adaptability is improved, but cracks occur in the driving chip
Solution Approach 1:
A crack prevention layer is formed on the driving chip before bending occurs. This layer acts as a cushion that absorbs and distributes the stress generated during bending, preventing cracks from forming in the driving chip while maintaining the flexibility needed for bent display configurations
2Volume of moving object
If the driving chip is made smaller to reduce device size, then volume is improved, but crack resistance during bending deteriorates
Solution Approach 1:
The crack prevention layer is selectively formed only on the driving chip area, providing localized protection where it is most needed. This allows the driving chip to maintain its small size for compact device design while the protective layer provides the necessary crack resistance during bending operations
Data Source
AI summary
The present invention provides a circuit driving element including a driving chip having a long axis and a short axis, the long axis being vertical to a bending axis and a crack prevention layer having a wider area than an area of the driving chip and covering a whole top surface of the driving chip, wherein the circuit driving element is provided in a non-display area of a display panel and is bent with respect to the bending axis, and a display apparatus including the circuit driving element.