Organic Electroluminescent Device Wiring Segmentation for Sealing
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Solution Overview
Problem
Organic electroluminescent devices face issues with moisture and oxygen vulnerability, leading to sealing challenges due to wiring lines that interfere with sealant application and UV irradiation, causing non-uniform sealing and potential wiring resistance problems.
Innovation Solution
The organic electroluminescent device features a substrate with a display unit and a sealing region where some wiring lines are divided into multiple segments, allowing for uniform sealing member application and reduced wiring resistance by adjusting the width and bending angles of power lines within the sealing region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring lines are formed in the sealing region, then electrical connections are established, but sealant application becomes non-uniform and UV irradiation is blocked
Solution Approach 1:
The wiring lines are divided into multiple segments within the sealing region. Instead of having continuous thick power lines, the patent segments them into multiple thinner lines that are spaced apart, allowing sealant to flow uniformly between them while maintaining electrical connectivity through series connections.
Solution Approach 2:
The wiring lines are extracted from the sealing region by routing them along the lateral sides of the display unit. Power lines are brought to lateral sides rather than traversing through the sealing region, eliminating the conflict between wiring and sealing processes.
2Power
If thick power lines are used, then power transmission capability is improved, but wiring resistance increases and load concentration occurs
Solution Approach 1:
Thick power lines are segmented into multiple thinner parallel lines. This distribution reduces the current load on each individual line, minimizing wiring resistance and preventing hot spots while maintaining total power transmission capacity through the combined effect of multiple lines.
Solution Approach 2:
Different wiring configurations are applied in different regions: thick continuous lines are used where high current capacity is needed, while segmented thinner lines are used in the sealing region where sealing quality is critical. This local adaptation optimizes both power transmission and sealing 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 the airtightness of the device and improves display quality by minimizing signal distortion and power consumption while ensuring effective hardening of the sealing member.
Implementation Method 1
the sealant is typically hardened by UV irradiation, thereby hermetically sealing the substrate and the sealing substrate
Data Source
AI summary
An organic electroluminescent device comprises: a substrate; a display unit located on the substrate and including a plurality of subpixels; a sealing region located at the outer periphery of the display unit and defined to form a sealing member; and a plurality of wiring lines connected to the display unit and disposed on the lateral side of the display unit, some of the plurality of wiring lines are respectively divided into two or more in the sealing region.