Flexible Display Spacer Arrangement for Lamination Pressure
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Solution Overview
Problem
Flexible displays are prone to damage during the laminating process due to uneven lamination pressure, which can lead to cracks in the edge regions of the display, especially in circular or non-uniformly shaped devices.
Innovation Solution
A flexible display apparatus with spacers and blocking dams arranged differently in the center and edge regions to distribute pressure uniformly, where spacers and blocking dams are designed to accommodate varying pressures, preventing cracks by ensuring consistent lamination across the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform spacers are used across the entire display region, then the manufacturing process is simple, but uneven lamination pressure causes cracks in edge regions
Solution Approach 1:
The patent applies different spacer configurations to different regions of the display. Specifically, the edge region has a different number or arrangement of spacers compared to the center region, creating local quality variations that compensate for uneven lamination pressure distribution during manufacturing.
2Manufacturing precision
If more spacers are placed in edge regions, then lamination pressure is better distributed, but the manufacturing complexity increases
Solution Approach 1:
The display region is segmented into different zones (edge region and center region) with distinct spacer configurations. This segmentation allows each region to be optimized independently for its specific lamination pressure requirements, improving overall manufacturing precision while maintaining reasonable process simplicity.
3Adaptability or versatility
If the display has a circular or non-uniform shape, then design versatility is improved, but lamination pressure becomes increasingly uneven
Solution Approach 1:
For circular or non-uniform displays, the patent implements region-specific spacer arrangements where edge regions with higher curvature or smaller radius receive different spacer configurations compared to flatter center regions. This local adaptation maintains reliability across diverse display shapes.
Data Source
AI summary
A flexible display apparatus includes a substrate, a thin film encapsulation layer, a plurality of spacers, and at least one layer of a blocking dam in the non-display region. The substrate includes a display region having a plurality of pixels and a non-display region adjacent to the display region. The thin film encapsulation layer is over the substrate. The spacers are between the substrate and the thin film encapsulation layer and are arranged around a pixel region. A different arrangement of spacers are in a center region and an edge region of the display region. The different arrangement may correspond to at least one of a size and a number of the spacers.