Dual-sided OLED Package with Pre-formed Shell
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Solution Overview
Problem
Conventional dual-sided OLED display packaging methods are complex, costly, and difficult to implement with narrow bezels, and they fail to effectively protect the display from water vapor and oxygen, leading to reduced lifespan, especially in adverse environments.
Innovation Solution
A dual-sided OLED display package structure using a pre-made packaging shell with fewer open terminals, where the display portions are arranged in a package cavity within the shell, with an insulating layer and adhesive used to secure the displays to the inner walls, reducing exposure to water vapor and oxygen, and allowing for easier and faster assembly with enhanced screen-to-body ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional dual-sided OLED display packaging methods are used, then the display can be protected from water vapor and oxygen, but the packaging process becomes complex and costly
Solution Approach 1:
The patent merges the packaging of two opposite-sided OLED displays into a single integrated package structure. The package body forms a unified protective enclosure that houses both displays simultaneously, eliminating the need for separate packaging processes and reducing overall structural complexity while maintaining protection capabilities.
Solution Approach 2:
The package body serves multiple functions: it protects both OLED displays from water vapor and oxygen, provides structural support, and enables the narrow bezel design. The adhesive layer simultaneously bonds both covers to the package body, creating a multi-functional packaging solution that addresses protection, assembly, and aesthetic requirements.
2Reliability
If conventional dual-sided OLED display packaging methods are used, then the display can be protected, but production time increases
Solution Approach 1:
The package body is pre-formed with the cavity structure before the OLED displays are installed. The adhesive layers are pre-applied to the package body, allowing for rapid assembly of the displays and covers without requiring complex in-situ bonding processes, thereby reducing production time while maintaining protection quality.
3Strength
If adequate distance is maintained between cover and substrate for firm bonding, then bonding strength is improved, but bezel width increases
Solution Approach 1:
The patent employs thin adhesive layers that provide sufficient bonding strength between the covers and package body without requiring large separation distances. The adhesive films are engineered to achieve firm bonding in minimal thickness, enabling narrow bezels while maintaining the necessary bonding strength for structural integrity.
4Reliability
If conventional packaging methods are used, then protection is provided, but cost increases
Solution Approach 1:
The patent combines two separate OLED packaging operations into a single integrated process. By housing both displays in one package body with unified sealing and bonding operations, the manufacturing cost is reduced through economies of scale, simplified material requirements, and decreased process steps while maintaining equivalent protection levels.
Data Source
AI summary
A dual-sided OLED display includes a package shell includes n transparent square box and a package cavity formed inside the package shell. An open terminal, arranged on both opposite sides of the package shell The first light-emitting display portion and the second light-emitting display portion arranged in the package cavity firmly. The dual-sided OLED display package structure includes a shell with fewer sealed opens which is produced in advance. Such a design effectively reduces the area of the package adhesive for the OLED display to further lessen the water vapor. It takes shorter time to package the OLED display so the yield increases owing to simple package.