Organic Electroluminescent Display Polarization Plate Air Layer Support
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Solution Overview
Problem
Conventional methods for attaching a polarization plate to an organic electroluminescent display device are problematic due to strong adhesion issues, making rework difficult and increasing reflectance, which affects picture quality.
Innovation Solution
A support member forms an air layer between the panel and the polarization plate, using a double-sided adhesive to attach the polarization plate and cover window, allowing for easier detachment and improved reflectance reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polarization plate is strongly adhered to the panel using conventional attachment methods, then the attachment strength is improved, but rework becomes difficult and reflectance increases
Solution Approach 1:
The attachment system is segmented into multiple functional layers: a support member with first adhesive for initial attachment, and a second adhesive layer between the polarization plate and support member. This segmentation allows the first adhesive to provide strong bonding while the second adhesive layer enables controlled detachment and rework, resolving the contradiction between attachment strength and ease of repair.
Solution Approach 2:
The support member acts as an intermediary element between the panel and the polarization plate. It provides a controlled attachment interface where the adhesive properties can be optimized for both strong bonding and controlled detachment, eliminating the need for direct strong adhesion between the panel and polarization plate while still achieving secure attachment.
2Strength
If conventional attachment methods are used to attach the polarization plate, then attachment strength is improved, but reflectance increases affecting picture quality
Solution Approach 1:
The support member serves as an intermediary optical element between the panel and polarization plate. By controlling the thickness and optical properties of the adhesive layers and the support member itself, the optical path is optimized to minimize reflectance while maintaining attachment strength, thereby improving picture quality without sacrificing bonding strength.
Solution Approach 2:
The optical parameters of the attachment structure are optimized by controlling the thickness of the adhesive layers and the refractive index matching between layers. By adjusting these parameters, reflectance is minimized while maintaining sufficient attachment strength, resolving the contradiction between strong adhesion and low reflectance.
3Device complexity
If the polarization plate is directly attached to the panel, then device complexity is reduced, but reflectance control and rework capability are compromised
Solution Approach 1:
The support member performs multiple functions simultaneously: it provides mechanical support for the polarization plate, enables controlled attachment and detachment for rework, and optimizes optical properties to minimize reflectance. This multi-functionality allows the additional structural element to be justified by its multiple benefits, effectively managing complexity while achieving superior performance.
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 configuration enhances picture quality by reducing reflectance and facilitating rework processes, improving the ambient contrast ratio and overall display performance.
Implementation Method 1
a support member configured to form an air layer between the panel and the polarization plate
Data Source
AI summary
An embodiment of this document provides an organic electroluminescent display device, comprising a panel, a polarization plate disposed over the panel, a cover window disposed on the polarization plate, and a support member configured to form an air layer between the panel and the polarization plate.