Stacked Plate for Window with Insulating Sheet
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Solution Overview
Problem
Conventional stacked plates for windows face a risk of reduced strength due to thermal expansion differences between conductive layers and glass plates, leading to potential cracking and reduced durability.
Innovation Solution
A stacked plate design featuring a laminated glass structure with a conductive layer formed by conductive wires and insulating sheets, where the conductive layer is integrated between glass plates and bonded with an intermediate film, eliminating the need for surface coating and reducing thermal expansion stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conductive paste is coated on the surface of the glass plate and baked to form a conductive layer, then the conductive layer can be formed, but stress is generated due to thermal expansion difference between the conductive paste and glass plate, lowering the strength of the glass plate
Solution Approach 1:
The patent introduces an intermediate film between the conductive layer and the glass plate. This intermediate film acts as a mediator that accommodates the thermal expansion difference between the conductive paste and glass plate, preventing stress concentration and cracking on the glass plate surface while still allowing the conductive layer to function properly
Solution Approach 2:
The patent creates a composite structure consisting of the glass plate, intermediate film, and conductive layer. This composite material approach allows each layer to perform its specific function while the combination as a whole resolves the thermal expansion conflict, with the intermediate film providing stress relief
2Reliability
If a conductive layer is formed by coating and baking conductive paste on glass plate surface, then the conductive function is achieved, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The intermediate film is pre-applied to the glass plate before the conductive layer formation process. This preliminary action prepares the substrate in advance, simplifying subsequent steps and reducing overall manufacturing complexity while ensuring the conductive layer can be formed reliably
3Reliability
If a conductive layer is formed by coating and baking conductive paste on glass plate surface, then the conductive layer can be created, but the process requires high temperature baking which increases energy consumption and processing time
Solution Approach 1:
The patent changes the thermal parameters of the system by introducing an intermediate film with appropriate thermal properties. This intermediate film acts as a thermal buffer, allowing the conductive layer to be formed with reduced baking temperature or shorter baking time, thereby reducing energy consumption while maintaining adequate adhesion
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 design enhances the strength and durability of the stacked plate by minimizing thermal expansion-induced stress and allowing for easier formation and handling of the conductive layer, while also simplifying the manufacturing process and maintaining the integrity of the glass plates.
Implementation Method 1
an intermediate film bonding the first glass plate and the second glass plate
Implementation Method 2
The stacked sheet 20 includes a plurality of conductive wires 21, a plurality of feeding points 22 (electrodes) and a plurality of insulating sheets 23
Implementation Method 3
stress due to a difference in thermal expansion between the conductive paste and the glass plate
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A stacked plate for window includes a laminated plate that includes a first transparent plate, a second transparent plate that faces the first transparent plate, and an intermediate film that bonds the first transparent plate to the second transparent plate; a conductive layer, at least a part of which is provided between the first transparent plate and the second transparent plate; and an insulating sheet that retains the conductive layer, the insulating sheet being bonded to the intermediate film between the first transparent plate and the second transparent plate.