Display Panel Barrier Units for Moisture-Protected Electrical Connections
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Solution Overview
Problem
In display panels, moisture and oxygen penetration into electrical-connection units, especially in high-temperature or high-humidity environments, leads to ion migration, increased resistance, and potential short circuits due to metal material degradation.
Innovation Solution
A display panel design featuring a first and second substrate with electrical-connection units, where a first barrier layer comprising barrier units is disposed between the substrates to surround the electrical-connection units, enhancing moisture-oxygen barrier capabilities and preventing ion diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If metal materials with high conductivity are used for electrical-connection units, then electrical conductivity is improved, but susceptibility to moisture and oxygen intrusion increases, leading to ion migration and performance degradation
Solution Approach 1:
A barrier layer comprising inorganic film layers and organic film layers is introduced as an intermediary between the metal electrical-connection units and the external environment. This barrier layer effectively blocks moisture and oxygen from reaching the metal materials, preventing ion migration and corrosion while maintaining the high electrical conductivity of the metal connection units
Solution Approach 2:
The barrier layer is constructed using composite material structure combining inorganic film layers (such as silicon oxide, silicon nitride, or titanium oxide) and organic film layers (such as acrylic resin or epoxy resin). This composite structure provides superior moisture and oxygen barrier properties compared to single-material layers, thereby protecting the electrical-connection units without compromising their conductive function
2Area of stationary object
If circuit lines are placed in the display area to reduce frame area, then device area is reduced, but the risk of moisture-oxygen penetration and metal ion migration increases
Solution Approach 1:
The barrier layer serves as a protective intermediary surrounding the circuit lines and electrical-connection units in the display area, isolating them from moisture and oxygen in the environment. This enables the circuit lines to be safely placed in the display area without increased risk of corrosion or ion migration
Solution Approach 2:
The barrier layer is implemented as thin film structures (inorganic and organic films) that conformally cover the circuit lines and electrical-connection units. These thin films provide effective moisture and oxygen barrier protection while occupying minimal space, allowing the circuit lines to be positioned within the display area without significantly increasing device footprint
3Reliability
If electrical-connection units are surrounded by barrier units, then protection against moisture and oxygen is improved, but device structure complexity increases
Solution Approach 1:
The barrier layer is integrated and formed together with the insulating layer in the same process sequence. The inorganic film layers and organic film layers are deposited and cured as part of the overall insulating layer formation process, thereby providing barrier protection without requiring separate additional processing steps or structures
Solution Approach 2:
The barrier layer performs multiple functions simultaneously: it provides moisture barrier protection, oxygen barrier protection, and electrical insulation for the circuit lines and electrical-connection units. This multi-functionality reduces the need for separate protective structures, thereby simplifying the overall device structure while maintaining reliable protection
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 barrier units effectively alleviate moisture-oxygen penetration, improve the stability and lifespan of electrical-connection units, and enhance display performance by preventing corrosion and ion diffusion.
Implementation Method 1
a first barrier layer comprising at least a plurality of first barrier units located between the first substrate and the second substrate; wherein one of the first barrier units is disposed to surround one of the electrical-connection units
Data Source
AI summary
Embodiments of the present disclosure discloses a display panel and a display device. The display panel includes a first substrate, a second substrate disposed opposite the first substrate, a plurality of electrical-connection units located between the first substrate and the second substrate, and a first barrier layer including at least a plurality of first barrier units located between the first substrate and the second substrate, wherein the electrical-connection units electrically connect the first substrate and the second substrate, and one of the first barrier units is disposed to surround one of the electrical-connection units.