Linear Electrode Wiring for Light Emitting Devices
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Solution Overview
Problem
Existing methods for forming wirings on light emitting devices struggle to reliably connect electrodes on the light emission surface to wirings without causing light blocking, especially when the position of the light emitting device or wiring shifts, leading to fluctuations in brightness.
Innovation Solution
The method involves forming electrodes and wirings in linear shapes with widths narrower than the light emission surface, allowing for reliable connection even with position shifts, using elongated rectangular shapes and orthogonal or oblique crossing configurations, and optionally using transparent conductive materials like ITO to minimize light blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode and wiring are formed with sufficient width to ensure reliable connection, then the connection reliability improves, but the light blocking area increases
Solution Approach 1:
The patent applies parameter changes by forming the electrode and wiring with optimized width parameters that are narrower than conventional designs. Specifically, the electrode width and wiring width are controlled to be less than the light emission surface width, creating a parameter optimization that simultaneously achieves reliable electrical connection while minimizing light blocking area. This parameter adjustment resolves the contradiction between connection reliability and light transmission efficiency.
2Object-affected harmful factors
If the electrode and wiring are formed with narrow widths to reduce light blocking, then the light blocking area decreases, but the connection reliability deteriorates
Solution Approach 1:
The patent resolves this contradiction through precise parameter control, setting the electrode width and wiring width to specific narrow dimensions that maintain adequate electrical connection while minimizing optical obstruction. The parameter optimization ensures that even with narrow widths, the connection reliability is sufficient for practical applications, thereby eliminating the traditional trade-off between connection reliability and light blocking reduction.
3Manufacturing precision
If the position of the light emitting device or wiring shifts during fabrication, then the manufacturing precision decreases, but the connection reliability should be maintained
Solution Approach 1:
The patent addresses position shifts by optimizing the width parameters of the electrode and wiring. The narrow but sufficient width design provides a tolerance buffer that accommodates fabrication position variations while maintaining reliable electrical connection. This parameter optimization makes the connection reliability robust against manufacturing precision variations, effectively decoupling connection reliability from strict position accuracy requirements.
Data Source
AI summary
A method of forming a wiring of a light emitting device having an electrode on a light emission surface is disclosed. The method includes: forming the electrode nearly in a linear shape in which the width is narrower than the light emission surface; and forming a wiring that is connected to the electrode nearly in a linear shape in which the width is narrower than the light emission surface to cross the electrode.