Flexible Display Driver Nesting in Curvature
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Solution Overview
Problem
Existing flexible display apparatuses have a wide bezel that limits their slimness and portability, making them less versatile for various applications.
Innovation Solution
A flexible display apparatus design featuring a display substrate with a light-emitting area, a non-emitting bending area that can be folded, and a driver integrated within the curvature portion, along with a thin film encapsulation layer and penetration wirings connecting pad terminals to driving terminals, allowing for a reduced bezel width and enhanced foldability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driver is placed outside the curvature portion, then the assembly is simple, but the bezel width increases
Solution Approach 1:
The driver is nested inside the curvature portion of the display substrate, with the driver positioned within the bent region. This nesting arrangement allows the driver to occupy the curved space without increasing the overall device footprint, thereby reducing bezel width while maintaining functional separation.
Solution Approach 2:
The driver is positioned in the curvature portion, utilizing the three-dimensional curved space created by the bent display substrate. This spatial reconfiguration moves the driver from a traditional planar arrangement to a curved configuration, enabling compact integration without increasing bezel width.
2Length of stationary object
If the driver is integrated within the curvature portion, then the bezel width is reduced, but the assembly becomes more complex
Solution Approach 1:
The driver and curvature portion are merged into a single integrated structure, where the driver is positioned within the bent region of the display substrate. This merging eliminates the need for separate mounting structures and complex interconnections, simplifying the overall assembly despite the compact integration.
3Adaptability or versatility
If the bending area is folded, then portability is improved, but component protection becomes challenging
Solution Approach 1:
The driver is nested inside the curvature portion, and the entire driver assembly is protected within the bent structure of the display substrate. This nested configuration allows the device to be folded for portability while the curved structure naturally protects the integrated driver from external damage.
Solution Approach 2:
The display substrate itself acts as a flexible protective shell that encloses and protects the driver when folded. The bent structure of the substrate provides mechanical protection to the integrated driver, maintaining component reliability while enabling portable folded configurations.
Data Source
AI summary
The present disclosure describes a flexible display apparatus that includes a display substrate including a light-emitting area, and a non-emitting area including a bending area foldable in a folding direction outside of the light-emitting area, and a pad area outside of the bending area, a thin film encapsulation layer over the light-emitting area, and a driver inside a curvature portion of the display substrate at the bending area, and including a plurality of driving terminals electrically connected to a plurality of pad terminals in the pad area through penetration wirings in via holes defined by the display substrate to provide a new, thinner flexible display apparatus.