OLED Manufacturing on Thin Paper Glass via Board Adhesion
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Solution Overview
Problem
The manufacturing of OLED displays and touch panels using very thin paper glass is challenging due to defects such as edge curling and breakage caused by static electricity, which complicates the formation of organic light emitting elements and touch sensing elements.
Innovation Solution
A manufacturing method involving the formation of contact patterns on board glass, adhering paper glass to specific peripheral areas, and separating the paper glass after element formation to prevent damage, allowing for the easy and reliable creation of OLEDs and touch panels on thin paper glass substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If very thin paper glass is used as substrate, then the OLED display becomes thinner and lighter, but the paper glass suffers from edge curling and breakage due to static electricity
Solution Approach 1:
The patent applies preliminary action by forming contact patterns on the paper glass substrate before depositing the OLED functional layers. This preliminary patterning step creates designated contact regions that guide subsequent processing and prevent random static discharge damage. The contact patterns serve as pre-established pathways that control electrical contact points, preventing uncontrolled static electricity buildup that would cause edge curling and breakage in thin paper glass substrates.
Solution Approach 2:
The contact patterns act as an intermediary element between the thin paper glass substrate and the OLED functional layers. These patterns provide controlled electrical contact points that mediate the interaction between the substrate and subsequent layers, preventing direct uncontrolled electrical contact that would generate harmful static electricity. The intermediary contact patterns protect the vulnerable thin substrate while enabling necessary electrical connections.
2Length of moving object
If very thin paper glass is used as substrate, then the OLED display can be made thinner, but it becomes more difficult to form organic light emitting elements and touch sensing elements without damage
Solution Approach 1:
The patent performs preliminary actions by pre-forming contact patterns and defining peripheral areas on the paper glass substrate before depositing OLED and touch panel elements. This preliminary structuring creates a stable framework that guides subsequent manufacturing steps, making it easier to form elements on the thin substrate without causing damage. The pre-established contact patterns serve as templates for subsequent layer deposition.
Solution Approach 2:
The patent applies local quality by creating distinct peripheral areas with different properties from the central panel region. The peripheral areas contain contact patterns and adhesion structures that provide localized mechanical support and electrical contact, while the central region maintains the thin, flexible characteristics needed for lightweight displays. This spatial differentiation of properties enables element formation on thin paper glass without compromising overall substrate integrity.
3Ease of manufacture
If paper glass is adhered to board glass for manufacturing, then element formation is facilitated, but the manufacturing process becomes more complex with multiple steps
Solution Approach 1:
The patent applies preliminary action by pre-forming contact patterns and defining peripheral adhesion areas on the paper glass substrate before bonding it to the board glass. This preliminary preparation simplifies the subsequent element formation process, as the pre-structured substrate provides ready-made contact points and mechanical support. The complex multi-step process is made manageable by performing critical preparatory actions in advance.
Solution Approach 2:
The patent segments the manufacturing process into distinct functional zones: peripheral areas for adhesion and electrical contact, and central panel regions for active element formation. This segmentation allows different manufacturing operations to occur in different zones simultaneously or in optimized sequences, managing overall process complexity through spatial organization of manufacturing steps.
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 method simplifies the formation of OLEDs and touch panels on thin paper glass, reducing defects like breakage and curling, and enables the efficient production of multiple displays and panels from a single paper glass sheet.
Implementation Method 1
The adhering the surface of the first board glass corresponding to the first peripheral area to the surface of the first paper glass may include heating the first paper glass which is in contact with the first board glass.
Data Source
AI summary
A manufacturing method of an organic light emitting diode (“OLED”) display includes: forming a contact pattern on a panel region of a surface of a board glass, where the board glass includes the panel region, and a peripheral area which surrounds the panel region; contacting the paper glass with a surface of the contact pattern corresponding to the panel region and the surface of the board glass corresponding to the peripheral area; adhering the surface of the board glass corresponding to the peripheral area to a surface of the paper glass; forming an organic light emitting element on the paper glass corresponding to the panel region; and separating the paper glass from the board glass by cutting the paper glass at a position corresponding to an end portion of the panel region adjacent to the peripheral area.