Moisture-Absorbing Cover Layer for Display Sensing Lines
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Solution Overview
Problem
Display devices face corrosion issues with sensing lines due to moisture, leading to potential damage and device defects.
Innovation Solution
A display device design featuring a cover layer with a silane compound to absorb moisture, combined with a driving cover layer that includes an insulating layer and a black material, and strategically defined openings to evaporate or absorb moisture, thereby protecting the sensing lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensing lines are exposed to the environment, then device complexity is reduced, but reliability deteriorates due to moisture corrosion
Solution Approach 1:
The patent applies a flexible encapsulation layer (thin film) that covers the sensing lines to protect them from moisture while allowing the device to maintain its flexibility. This thin film barrier prevents moisture penetration without requiring complex rigid protective structures, thus improving reliability while controlling device complexity.
Solution Approach 2:
The patent introduces an intermediary substance (silane compound) that absorbs moisture before it can reach and corrode the sensing lines. This mediator substance is positioned between the environment and the sensing lines, preventing direct contact with moisture while maintaining a relatively simple overall structure.
2Reliability
If a cover layer is added to protect sensing lines, then reliability improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges the protective cover layer with the existing encapsulation structure of the display device. By combining the moisture protection function into the existing encapsulation layer rather than adding a completely separate protective system, the patent reduces the additional manufacturing precision requirements while still providing effective moisture protection to the sensing lines.
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
Prevents corrosion of sensing lines and maintains the integrity of the display device by effectively managing moisture exposure through the use of a silane compound and a structured cover layer system.
Implementation Method 1
the cover layer may include a silane compound to absorb moisture
Implementation Method 2
strategically defined openings to evaporate or absorb moisture
Data Source
AI summary
A display device includes: a display panel including a first region, a second region, and a bending region located along a first direction, the bending region being between the first and second regions; a plurality of sensing electrodes on the first region; a data driver on the second region; sensing lines on the first region connected to the sensing electrodes, and extending in the first direction toward opposite sides of the data driver opposite to each other in a second direction crossing the first direction; and a cover layer on the sensing lines.