Insulation Pattern Layout for Stable Series LED Display Connections
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Solution Overview
Problem
Display devices face challenges in maintaining the alignment and series connections of light emitting elements, leading to potential separation and reliability issues.
Innovation Solution
A display device design featuring an electrode layer with a fixing pattern extending in the alignment area, an insulating layer with specific openings and patterns, and contact electrodes to secure light emitting elements, preventing separation while maintaining series connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light emitting elements are arranged in an alignment area without additional fixing structures, then the device structure remains simple, but the light emitting elements may separate or disconnect
Solution Approach 1:
The electrode layer is segmented into first and second electrodes extending in a first direction, while the insulating layer contains patterns (fixing pattern, division pattern, connection pattern) that segment the alignment area. This segmentation allows independent control of different regions to prevent separation while maintaining overall structural simplicity.
Solution Approach 2:
The insulating layer acts as an intermediary between the first and second electrodes, containing patterns that mediate the connection and positioning of light emitting elements. The fixing pattern, division pattern, and connection pattern work together as intermediary structures to secure elements without requiring complex additional fixing mechanisms.
2Manufacturing precision
If the number of series connections between light emitting elements is increased to improve display performance, then the alignment precision requirements increase, making manufacturing more difficult
Solution Approach 1:
The insulating layer patterns (fixing pattern, division pattern, connection pattern) are formed in advance during manufacturing to pre-establish the alignment framework. This preliminary action creates guide structures that facilitate subsequent light emitting element placement, reducing alignment precision requirements and easing manufacturing.
Solution Approach 2:
The solution introduces a second dimension (the insulating layer pattern dimension) beyond the simple linear arrangement of light emitting elements. The fixing pattern extends in the first direction while the division and connection patterns provide second direction control, creating a two-dimensional alignment system that improves precision without complicating the fundamental linear manufacturing process.
Data Source
AI summary
A display device includes an electrode layer including a first electrode; and a second electrode; light emitting elements on the electrode layer; an insulating layer on the light emitting elements and including openings exposing at least one of ends of a part of the light emitting elements; and a contact electrode corresponding to each of the openings, the insulating layer includes a fixing pattern between the first electrode and the second electrode; a division pattern intersecting the fixing pattern; a connection pattern connecting a first end of the fixing pattern to a first end of the division pattern; and a base portion surrounding the fixing pattern, the division pattern, and the connection pattern, the base portion is connected to a second end of the fixing pattern and a second end of the division pattern and spaced apart from the connection pattern.