Multi-Polymer Substrate Ion Grounding for Flexible Displays
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Solution Overview
Problem
Flexible display devices are vulnerable to high-temperature and high-humidity environments due to their thin substrates, which can lead to ionization of moisture and influence the panel array, compromising device reliability.
Innovation Solution
A display panel structure is introduced that includes a substrate with multiple polymer layers and an inorganic interlayer insulating film, along with a semiconductor layer that grounds hydrogen and oxygen ions, preventing their influence on the panel array and enhancing moisture resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a thin substrate is used to achieve flexibility, then flexibility is improved, but vulnerability to high-temperature and high-humidity environments worsens
Solution Approach 1:
The substrate is constructed as a composite structure comprising multiple polymer layers (first polymer layer and second polymer layer) with an inorganic interlayer insulating film and semiconductor layer positioned between them. This composite configuration provides both flexibility and protection against environmental degradation, resolving the contradiction between thin-substrate flexibility and environmental reliability.
2Reliability
If moisture protection is enhanced through multiple layers, then reliability is improved, but device complexity increases
Solution Approach 1:
The substrate is segmented into distinct functional layers: a first polymer layer, an inorganic interlayer insulating film, a semiconductor layer, and a second polymer layer. Each layer performs a specific function (mechanical support, insulation, charge grounding, and protection), achieving effective moisture and ion resistance through functional segmentation without excessive complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively minimizes electrical interference on the panel array, improves device reliability, and enhances yield by removing conductive ions without a separate mask, while also improving camera recognition ability by adjusting the semiconductor layer and hole positions.
Implementation Method 1
a semiconductor layer configured to contact the inorganic interlayer insulating film
Data Source
AI summary
A display panel comprises a substrate including a plurality of polymer layers, an inorganic interlayer insulating film, and a semiconductor layer between the plurality of polymer layers and a panel array over the substrate. The semiconductor layer within a substrate may ground electric charges entered from the outside through the semiconductor layer. Thus, the display panel protects an array provided on the substrate and improves the reliability of the display device.