Display Device Organic Insulating Layers for Element Attachment
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Solution Overview
Problem
Existing display devices face issues with light-emitting elements becoming detached during the cleaning process after alignment, which can disrupt the functionality and integrity of the display.
Innovation Solution
The implementation of first and second organic insulating layers on and under the light-emitting elements, respectively, adhering and fixing them to a passivation layer, and patterning these layers via a single etching process to simplify manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light-emitting elements are aligned and cleaned, then display quality is improved, but light-emitting elements become detached
Solution Approach 1:
The patent applies preliminary action by forming the organic insulating layer before the cleaning process. This insulating layer acts as a protective adhesive that secures the light-emitting elements to the substrate in advance, preventing detachment during subsequent cleaning operations while maintaining alignment precision.
Solution Approach 2:
The organic insulating layer serves as an intermediary between the light-emitting elements and the substrate. It provides both electrical insulation and mechanical attachment, mediating the relationship between these components to prevent detachment during cleaning while preserving alignment quality.
2Reliability
If multiple insulating layers are added to prevent detachment, then element stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the functions of electrical insulation and mechanical attachment into a single organic insulating layer. This combined layer eliminates the need for separate insulating and adhesive layers, reducing device complexity while maintaining element stability.
Solution Approach 2:
The organic insulating layer performs multiple functions simultaneously: it provides electrical insulation between conductive layers and serves as an adhesive to secure the light-emitting elements. This multi-functionality reduces the overall number of components needed in the device.
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
Prevents light-emitting elements from detachment during cleaning, ensuring the stability and functionality of the display device by adhering them securely to the passivation layer.
Implementation Method 1
a first organic insulating layer and a second organic insulating layer may be disposed on and under light-emitting elements, respectively, so that the light-emitting elements can be adhered and fixed to a first passivation layer
Data Source
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AI summary
A display device includes a substrate, a first electrode and a second electrode that extend in a direction on the substrate and are spaced apart from each other, a first passivation layer disposed on the substrate and overlapping the first electrode and the second electrode, at least one light-emitting element disposed on the first passivation layer and having ends disposed on the first electrode and the second electrode, respectively, a first organic insulating layer disposed between the first passivation layer and the at least one light-emitting element, and a second organic insulating layer disposed on the at least one light-emitting element.