Array Substrate Through-Hole Venting for TFT Moisture Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of display panels generates moisture, which affects the electrical properties of oxide-sensitive thin film transistors, leading to issues like current leakage and electrostatic discharge, causing failures in the display panel.
Innovation Solution
An array substrate with a protection layer having a through-hole close to the channel region of the thin film transistor layer is used to discharge moisture, preventing hydrogen ions from accumulating and negatively biasing the transistor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protection layer is added to cover the base substrate, then the reliability of the thin film transistor is improved, but moisture is trapped inside causing negative bias leakage
Solution Approach 1:
The protection layer incorporates a through-hole that acts as a moisture discharge channel, allowing the protection layer to maintain its protective function while simultaneously enabling moisture to escape from the channel region, thus preventing moisture accumulation and negative bias leakage
2Productivity
If the through-hole is positioned close to the channel region, then moisture discharge efficiency is improved, but the risk of affecting transistor performance increases
Solution Approach 1:
The through-hole is strategically positioned close to the channel region to maximize moisture discharge efficiency at the critical area, while the protection layer maintains its protective function in other regions, creating a localized solution that addresses moisture accumulation without compromising overall transistor performance
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 solution effectively reduces moisture-related issues, improving the stability of the thin film transistor and preventing negative bias leakage in display panels without altering the spatial arrangement, thereby enhancing the reliability of the display panel.
Implementation Method 1
a protection layer disposed on the base substrate and covering the base substrate, the protection layer having a first through-hole for discharging moisture
Data Source
AI summary
Disclosed are an array substrate, a display panel, and a method for manufacturing an array substrate, wherein the array substrate includes a base substrate and a protection layer, the protection layer is disposed on the base substrate and covers the base substrate, and a first through-hole for discharging moisture is formed in the protection layer. The present disclosure improves the stability of the thin film transistor in the array substrate by providing the through-hole in the protection layer to discharge moisture without additional structures, and improves the phenomenon of negative bias leakage of the display panel without changing the spatial arrangement.