Strain Measuring Part for Flexible Display Delamination Prevention
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Solution Overview
Problem
Flexible display devices face defects such as delamination between the display panel and applied films during the bending process in manufacturing, which existing technologies fail to effectively measure or prevent.
Innovation Solution
A display device with a strain measuring part coated by a measurement pigment composition, including ultraviolet curable resin, thermoplastic resin, or thermosetting resin, and pigment particles like lithopone or carbon black, which allows for strain measurement using 3D image comparison before and after bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display panel is bent in a manufacturing process, then flexibility is achieved, but delamination between the display panel and film may occur
Solution Approach 1:
The patent applies preliminary action by measuring and controlling strain during the bending process before delamination occurs. The strain measuring part is installed in advance to monitor stress distribution, allowing preventive adjustments to be made during manufacturing to avoid delamination defects while achieving the desired flexibility.
2Ease of manufacture
If existing measurement methods are used, then manufacturing process is simple, but strain measurement capability is insufficient
Solution Approach 1:
The patent introduces a strain measuring part as an intermediary element that bridges the gap between simple manufacturing processes and precise strain measurement capabilities. This measuring part acts as a mediator that can be integrated into the existing manufacturing workflow while providing accurate strain data through 3D imaging technology.
Data Source
AI summary
A measurement pigment composition including pigment particles may be coated on a surrounding area of a display panel to form a strain measuring part. A strain of the display device may be measured by using 3D images of the strain measuring part.