Electrochromic Electrode Layout for Single-Side Lead Welding
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Solution Overview
Problem
Existing electrochromic devices require complex manufacturing processes involving thermocompression welding twice, which hinders automatic production and reduces production efficiency and yield.
Innovation Solution
An electrochromic device design that allows electrode leads to be led out from the same side, enabling simultaneous thermocompression welding of both leads, simplifying the process and improving production efficiency and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrode leads are led out from upper and lower conductive substrates respectively, then electrical connection is achieved, but thermocompression welding must be performed twice and the process becomes complex
Solution Approach 1:
The patent changes the spatial arrangement of electrode leads from vertical separation (upper and lower substrates) to horizontal alignment (same side substrate). By positioning both leads on the same side of the substrate, the welding process transitions from two separate vertical welding operations to a single horizontal welding operation, thereby reducing process complexity while maintaining electrical connection reliability
2Reliability
If thermocompression welding is performed twice, then both electrode leads are connected, but production efficiency decreases and automatic production becomes difficult
Solution Approach 1:
The patent merges the welding operations for both electrode leads into a single thermocompression welding process. By positioning the leads such that they can be welded simultaneously on the same side of the substrate, the patent combines two separate welding operations into one, thereby improving production efficiency and enabling automatic production while ensuring reliable electrical connections for both leads
3Device complexity
If electrode leads are led out from the same side, then welding process is simplified, but the area where color change does not occur increases
Solution Approach 1:
The patent applies local quality by positioning the electrode leads at specific locations on the same side of the substrate, allowing the welding process to be simplified while minimizing the impact on the electrochromic layer's color-changing functionality. The leads are strategically placed to reduce the area where color change is inhibited
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
The simplified manufacturing process enhances production efficiency and yield while minimizing the area of the electrode leading out region where color change does not occur, facilitating automatic production.
Implementation Method 1
Electrochromic phenomenon refers to a reversible redox reaction of a material under an action of an external electric field, resulting in changes in optical performance (such as transmittance, absorptance and reflectivity) of the material, which are manifested as reversible changes in color and transparency in appearance.
Implementation Method 2
a conduction member 6 having conductivity is poured into the conduction opening 5, and the conduction member 6 is used for electrically connecting the first transparent conductive layer 11 to the second conductive region 312
Implementation Method 3
Both an electrode lead for connecting the first transparent conductive layer and an electrode lead for connecting the second transparent conductive layer can be led out from the second transparent conductive base layer, which facilitates the welding of the two electrode leads of the electrochromic device being completed simultaneously through thermocompression welding once.
Data Source
AI summary
An electrochromic device, comprising a first conductive base layer, an electrochromic layer and a second conductive base layer stacked in sequence. The first conductive base layer comprises a first transparent conductive layer and a first base material layer stacked in sequence; the first transparent conductive layer is adhered to one side of the electrochromic layer; the second conductive base layer comprises a second transparent conductive layer and a second base material layer stacked in sequence; the second transparent conductive layer is adhered to the other side of the electrochromic layer; a partition groove is provided in the second transparent conductive layer for partitioning the second transparent conductive layer into a first conductive area and a second conductive area independent of each other; a conduction member is provided on the second conductive area, and the first transparent conductive layer is electrically connected to the second conductive area by the conduction member.