Rod-Type LED Contact Structure With Bridge Pattern Alignment
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Solution Overview
Problem
Rod-type light emitting diodes (LEDs) face contact failures due to poor contact electrode design, leading to reduced reliability and efficiency in display devices.
Innovation Solution
A light emitting device design featuring a substrate with a first and second electrode, a light emitting element with a bridge pattern and insulating pattern, and contact electrodes that securely couple the electrodes with the light emitting element, minimizing contact failures through precise alignment and exposure of contact areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact electrodes are directly connected to light emitting elements, then electrical connection is established, but contact failures occur due to poor contact design
Solution Approach 1:
The patent introduces a bridge pattern as an intermediary structure between the contact electrode and the light emitting element. This bridge pattern includes a first contact portion, a second contact portion, and a connecting portion that electrically connects them. The bridge pattern acts as a mediator that ensures reliable electrical connection while providing a structured interface for contact, thereby improving contact reliability without excessive complexity.
Solution Approach 2:
The contact structure is segmented into multiple functional parts: the bridge pattern is divided into a first contact portion (contacting the light emitting element), a second contact portion (contacting the electrode), and a connecting portion (electrically connecting them). This segmentation allows each part to be optimized for its specific function, improving overall contact reliability while maintaining manageable structural complexity.
2Reliability
If bridge pattern is added to improve contact, then contact reliability improves, but device complexity increases
Solution Approach 1:
The bridge pattern merges multiple functions into a single integrated structure: it provides mechanical support, establishes electrical connection, and creates defined contact interfaces. By combining these functions into one component rather than using separate elements, the patent improves contact reliability while minimizing the increase in device complexity.
Solution Approach 2:
The bridge pattern serves multiple purposes simultaneously: it acts as an electrical conductor, a mechanical support structure, and a contact interface definition element. This multi-functionality allows the single component to improve contact reliability across multiple aspects (electrical, mechanical, structural) without proportionally increasing device complexity.
Data Source
AI summary
The present application relates to a light emitting device, manufacturing method thereof, and a display device provided therewith. The light emitting device may include: a substrate; a first electrode provided on the substrate, and a second electrode disposed on a plane identical with a plane of the first electrode at a position spaced apart from the first electrode; at least one light emitting element provided on the substrate, and including a first end and a second end with respect to a longitudinal direction; a bridge pattern provided on the light emitting element, and coupled to the second end of the light emitting element; a first contact electrode provided on the substrate, and coupling the first electrode with the first end of the light emitting element; and a second contact electrode provided on the substrate, and coupling the bridge pattern with the second electrode.