Display Panel Fabrication for Stable TFTs in Bending Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display panel fabrication methods face challenges in achieving stable and reliable performance due to issues with thin-film transistor stability and organic light-emitting diode integration, particularly in bending regions where stress and defects can occur.
Innovation Solution
A method involving the formation of a silicon semiconductor pattern and an oxide semiconductor pattern with specific insulating layers and electrodes, followed by thermal treatment and organic layer deposition, to enhance the stability and reliability of the display panel, especially in bending regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fabrication methods are used, then manufacturing process is simpler, but thin-film transistor stability and display panel reliability deteriorate
Solution Approach 1:
The fabrication process is segmented into distinct stages: forming silicon semiconductor patterns in first and second regions, forming oxide semiconductor patterns in the second region, and selective etching of insulating layers. This segmentation allows each region to be optimized independently, improving transistor stability without overwhelming process complexity
Solution Approach 2:
Different semiconductor materials are used in different regions: silicon semiconductor in the first region and oxide semiconductor in the second region. This local differentiation optimizes electrical characteristics for specific functional requirements, enhancing overall display panel reliability through region-specific material properties
2Manufacturing precision
If thermal treatment is performed at high temperature, then electrical characteristics improve, but organic layer may be damaged
Solution Approach 1:
The organic layer is formed after the fourth insulating layer is thermally treated, not before. This preliminary sequencing ensures that the organic layer is protected from high-temperature damage during thermal treatment, while still allowing the insulating layer to achieve proper electrical characteristics through thermal processing
Solution Approach 2:
The fourth insulating layer serves as a protective intermediary between the thermal treatment process and the organic layer. It allows thermal energy to pass through for treating underlying layers while protecting the temperature-sensitive organic layer from direct thermal damage
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
The method improves the electrical characteristics and reliability of the display panel by stabilizing thin-film transistors and ensuring consistent performance even in bending regions, reducing defects and stress-related issues.
Implementation Method 1
thermally treating the fourth insulating layer
Implementation Method 2
forming on the organic layer an organic layer to cover the fourth insulating layer
Data Source
AI summary
A method of fabricating a display panel may include forming an oxide semiconductor pattern on a base layer including a first region and a second region, etching first, second, and third insulating layers to form a first groove that overlaps the second region, forming electrodes on the third insulating layer, forming a fourth insulating layer on the third insulating layer to cover the electrodes, thermally treating the fourth insulating layer, forming an organic layer to cover the fourth insulating layer, and forming an organic light emitting diode on the organic layer.