Display Device Moisture Detection via Resistance Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face challenges in detecting and quantitatively determining moisture permeation, which can lead to defects in internal components like transistors and light emitting diodes, making it difficult to analyze and address the issue effectively.
Innovation Solution
The display device incorporates a first and second electrode protruding outside, connected by a connection layer with varying thicknesses over structures, allowing for the measurement of resistance changes to detect and quantify moisture permeation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional moisture detection methods are used, then moisture permeation can be detected, but the detection process is complex and quantitative determination is difficult
Solution Approach 1:
The patent extracts the moisture detection function from complex internal component inspection and implements it through a simple resistance measurement system using separate electrodes and connection layers, enabling quantitative determination through straightforward electrical measurements
Solution Approach 2:
The connection layer serves multiple functions: it electrically connects the first and second electrodes while simultaneously acting as the sensing element for moisture detection, eliminating the need for separate detection components and simplifying the overall device structure
2Reliability
If internal components are inspected for moisture damage, then defects can be identified, but the inspection process is time-consuming and difficult to perform
Solution Approach 1:
The patent incorporates moisture-sensitive connection layers and electrodes during the manufacturing process, enabling moisture detection to be performed as a preliminary quality check before product completion, thereby identifying defects early without requiring time-consuming post-manufacturing inspections
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 enables easy and accurate detection of moisture permeation, allowing for the evaluation of its impact on the display device's reliability and identifying defects caused by moisture exposure.
Implementation Method 1
a resistance of a connection layer in the display device is measured by a first electrode and a second electrode which protrude to the outside of the display device to determine whether moisture permeates
Data Source
AI summary
According to an aspect of the present disclosure, a display device includes a first substrate including an active area and a non-active area adjacent the active area; a plurality of light emitting diodes in the active area of the first substrate; a first electrode and a second electrode in the non-active area of the first substrate and spaced apart from each other; a plurality of structures between the first electrode and the second electrode and spaced apart from each other; and a connection layer on the plurality of structures and electrically connecting the first electrode and the second electrode.