Multi-layer Gate Electrode Structure for Flexible Display Delamination
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Solution Overview
Problem
Conventional flexible display substrates face challenges during delamination due to their lightweight and thin nature, leading to potential damage of elements disposed on them, as they can be easily deformed and bent during the removal process.
Innovation Solution
A display panel design featuring a substrate with a gate electrode structure comprising multiple overlapping gate electrode layers, which provides increased flexibility and prevents damage to elements during delamination by distributing outward forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible substrate is used instead of a rigid glass substrate, then flexibility and light weight are improved, but the substrate becomes easily deformed and elements may be damaged during delamination
Solution Approach 1:
The gate electrode structure is divided into multiple gate electrode layers (first gate electrode layer and second gate electrode layer) that are disposed at different positions and have different widths. This segmentation allows each layer to contribute differently to the overall structural support, with the multi-layer configuration distributing mechanical stresses during delamination to prevent element damage while maintaining substrate flexibility.
2Weight of moving object
If the flexible substrate is made lighter and thinner, then flexibility is improved, but the substrate lacks sufficient structural support to prevent element damage
Solution Approach 1:
The gate electrode structure employs a composite multi-layer configuration where the first gate electrode layer and second gate electrode layer are made of conductive materials and disposed in combination with each other. This composite structure provides enhanced mechanical strength and structural support to the lightweight flexible substrate, preventing element damage during delamination while maintaining the overall light weight and flexibility of the display apparatus.
Data Source
AI summary
A display panel includes a substrate, an active layer, a gate insulating layer, a gate electrode structure, an insulating interlayer, a switching element, and a planarization insulating layer. The active layer includes a source region and a drain region, and is disposed on the substrate. The gate insulating layer is disposed on the active layer. The gate electrode structure includes a plurality of gate electrode layer which are at least partially overlapped with each other. The gate electrode structure is disposed on the gate insulating layer. The insulating interlayer covers the gate electrode structure. The switching element includes a source electrode and a drain electrode, and the source electrode and the drain electrode are in contact with the source region and the drain region, respectively. The planarization insulating layer covers the switching element.