Quantum Dot Display Dual-Sealing Structure for Peeling Prevention
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Solution Overview
Problem
There is a need to improve the performance of quantum dot light-emitting display devices, particularly in terms of display quality and manufacturing efficiency.
Innovation Solution
A display device design incorporating a first and second sealing member, where the second sealing member includes an acidic material and glass powder, ceramic filler, and polymer resin, with a larger width and height compared to the first sealing member, to facilitate a positive aging process that supplies hydrogen ions and water to the interlayer, reducing peeling and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member is used to surround the display element layer, then reliability is improved by preventing peeling, but device complexity increases due to the need for multiple sealing members with different materials
Solution Approach 1:
The sealing member is divided into a first sealing member and a second sealing member with different materials. The first sealing member surrounds the display element layer while the second sealing member surrounds the first sealing member, creating a segmented structure that provides different functions at different levels to prevent peeling without excessive complexity
Solution Approach 2:
The sealing members are made from different materials optimized for their specific functions. The first sealing member uses materials suitable for direct contact with the display element layer, while the second sealing member uses different materials that provide enhanced protection and bonding to the substrate, creating a composite sealing system
2Manufacturing precision
If additional plasma treatment is applied to supply hydrogen ions and water, then display quality is improved, but manufacturing time and cost increase
Solution Approach 1:
The sealing members are designed to automatically supply hydrogen ions and water to the interlayer through their material composition and aging process, eliminating the need for additional plasma treatment steps. The sealing members serve dual functions of both sealing and providing the necessary chemical components for display quality
Solution Approach 2:
The sealing members are pre-designed with materials that will release hydrogen ions and water during the aging process, preparing the interlayer in advance without requiring subsequent plasma treatment. This preliminary incorporation of necessary elements streamlines the manufacturing process
3Reliability
If the second sealing member is made larger than the first sealing member, then reliability is improved by ensuring complete coverage, but manufacturing precision requirements increase
Solution Approach 1:
The sealing members are designed with different dimensions in the planar direction, with the second sealing member having a larger width than the first sealing member. This dimensional differentiation ensures complete coverage and proper nesting while providing clear manufacturing guidelines for each component
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
The design enhances display quality by preventing peeling and reduces manufacturing time and costs by allowing a hydrogen ion and water supply without additional plasma treatment, thereby improving luminous efficiency.
Implementation Method 1
the second sealing member may include an acidic material... a hydrogen ion and water emitted from the first sealing member and the second sealing member is supplied to an interlayer
Data Source
AI summary
A display device includes a first substrate, a display element layer disposed on the first substrate and including at least one pixel including a quantum dot, a first sealing member disposed on the first substrate and surrounding at least a portion of the display element layer, a second sealing member disposed on the first substrate and surrounding at least a portion of the first sealing member, and a second substrate disposed on the display element layer, the first sealing member, and the second sealing member.