Organic Light Emitting Display Outgassing Route Patterning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In organic light emitting display devices with alternately stacked organic and inorganic films, the low interfacial contact leads to outgassing, causing gas retention and accelerated shrinkage, which reduces the diode's lifespan.
Innovation Solution
The inorganic film is patterned to form outgassing routes, allowing gas to be released from the organic film, preventing it from reaching the pixel unit and guiding it to the cell drive unit, thereby maintaining pixel size and extending the diode's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas remains in the organic film during outgassing, then the diode is deteriorated and shrinkage phenomenon is accelerated, but creating outgassing routes requires patterning the inorganic film
Solution Approach 1:
The inorganic film is divided into protected regions and outgassing route regions through patterning. This segmentation enables gas to escape through designated channels, preventing accumulation and deterioration while maintaining overall structural integrity.
Solution Approach 2:
Gas is extracted from the organic film through the patterned openings in the inorganic film. By creating these extraction pathways, the harmful gas is removed before it can cause deterioration or shrinkage.
2Ease of manufacture
If the inorganic film is patterned to form outgassing routes, then gas can be released from the organic film, but the manufacturing process becomes more complex
Solution Approach 1:
The inorganic film is patterned into segments with openings that serve as outgassing routes. This segmentation creates gas release capability while using standard photolithography and etching processes that are already part of the manufacturing workflow.
Solution Approach 2:
The patterned inorganic film serves multiple functions: it provides protection where covered and enables gas release where opened. This multi-functionality is achieved through a single patterning step that integrates into the existing manufacturing process.
Data Source
AI summary
An organic light emitting display device wherein organic and inorganic films are alternately stacked, and the inorganic film is patterned to form an outgassing route, through which gas is released from the organic film, and a manufacturing method thereof is herein.