Electronic Spectacle Electrode Structure for Reliable Connections
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Solution Overview
Problem
The existing electric wiring configuration in electronic spectacles is prone to faulty electrical connections due to loose screws, and increasing the thickness of ITO transparent electrode layers through dry processes like vacuum vapor deposition is not feasible, leading to degraded operating characteristics.
Innovation Solution
A method involving the formation of auxiliary electrode layers using conductive ink on the substrates, combined with vacuum vapor deposition for the electrode patterns, to enhance the reliability of electrical connections without compromising the operating characteristics of the electronic elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the ITO transparent electrode layer is increased to prevent faulty electrical connections, then the reliability of electrical connection is improved, but the operating characteristics of the element are degraded due to increased electrical resistance
Solution Approach 1:
The electrode structure is divided into multiple layers: a base ITO transparent electrode layer formed by vacuum vapor deposition, and an additional auxiliary electrode layer formed by wet process coating. This segmentation allows each layer to serve specific functions - the base layer maintains low resistance and transparency, while the auxiliary layer enhances electrical connection reliability without compromising the optical and electrical properties of the base layer.
Solution Approach 2:
The patent combines two different electrode formation methods to create a composite electrode structure. The base ITO layer is formed by vacuum vapor deposition to ensure low resistance and high transparency, while the auxiliary electrode layer is added through wet process coating to enhance electrical connection. This composite structure leverages the advantages of both methods without the drawbacks of either alone.
2Reliability
If the ITO transparent electrode layer thickness is increased through wet process to improve electrical connection reliability, then the electrical connection is improved, but the electrical resistance increases and operating characteristics are degraded
Solution Approach 1:
The electrode system is segmented into a thin base layer formed by vacuum vapor deposition and a thicker auxiliary layer formed by wet process. The base layer maintains low electrical resistance and high transparency, while the auxiliary layer provides enhanced electrical connection without significantly increasing overall resistance due to its position and composition.
Solution Approach 2:
The auxiliary electrode layer is applied locally at specific regions where enhanced electrical connection is needed, such as contact areas with rim locks or external circuits. This localized application allows the wet process layer to be used where it provides benefit without unnecessarily increasing resistance across the entire electrode surface.
3Reliability
If the ITO transparent electrode layer thickness is increased, then the electrical connection reliability is improved, but the light transmittance decreases and the electrode patterns become noticeable
Solution Approach 1:
The electrode structure is segmented into a thin base ITO layer formed by vacuum vapor deposition that maintains high light transmittance, and an auxiliary electrode layer formed by wet process that enhances electrical connection. The base layer's thinness ensures optical clarity, while the auxiliary layer provides the needed electrical reliability without significantly impacting light transmission.
Solution Approach 2:
The composite electrode structure combines a transparent base layer with an auxiliary conductive layer. The base layer is optimized for optical properties with thin thickness and high transparency, while the auxiliary layer is optimized for electrical properties. Together they create a multi-functional composite that achieves both optical clarity and electrical reliability.
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 ensures reliable electrical connections and maintains high light transmittance without making the electrode patterns noticeable, preventing disconnections and short circuits caused by loose fastening or displacement.
Implementation Method 1
the first recess is coated with conductive ink to form a transparent first auxiliary electrode layer
Implementation Method 2
a transparent lower electrode pattern is formed on the electric element forming part of the lower substrate and the first auxiliary electrode layer by a vacuumvapor deposition method
Data Source
AI summary
A first recess (102) of a lower substrate (100) is coated with conductive ink to form a first auxiliary electrode layer (104), a lower electrode pattern (105) is formed thereon by vacuum deposition, a second recess (202) of an upper substrate (200) is coated with the conductive ink to form a second auxiliary electrode layer (204), an upper electrode pattern (205) is formed thereon by vacuum deposition, the upper and lower substrates are bonded to each other with an electric element (300) interposed between the lower substrate (100) and the upper substrate (100), and the upper and lower substrates are cut at positions on the overlap portion of the first auxiliary electrode layer (104) and the lower electrode pattern (105) and the overlap portion of the second auxiliary electrode layer (204) and the upper electrode pattern (205) so as to expose the cut surfaces of the substrates.