Silver Sintering Agent with Oxide Surfaces for Pressure Joining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for connecting electronic components using metal or silver sintering pastes often result in waste and inefficiencies, as they require a liquid state and may not effectively utilize the entire surface for sintering, limiting the formation of a robust and uniform silver oxide layer.
Innovation Solution
A method for producing a layered silver sintering agent with silver oxide surfaces, which involves applying a silver sintering preparation to a carrier substrate, sintering, detaching the formed silver sintered body, and optionally reinforcing the silver oxide layer through oxidation, allowing for a discrete, free silver layer that can be used in pressure sintering without passing through a liquid state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If metal or silver sintering paste is used for connecting electronic components, then the connection can be formed, but waste is generated and the entire surface cannot be effectively utilized for sintering
Solution Approach 1:
The invention divides the sintering process into two independent parts: (1) a silver sintered body that is pre-formed and detached from the carrier substrate, and (2) the carrier substrate itself. This segmentation allows the silver sintered body to be reused multiple times, eliminating waste while maintaining effective sintering surface area.
Solution Approach 2:
The silver sintering preparation is applied to the carrier substrate in advance, sintered, and then the silver sintered body is detached for reuse. This preliminary formation of the silver layer eliminates the need to apply fresh paste for each sintering operation, reducing waste and improving productivity.
2Manufacturing precision
If silver sintering paste is applied and sintered, then connection is achieved, but the silver oxide layer formation is limited and not uniform
Solution Approach 1:
The silver oxide layer is formed on the silver sintered body before it is used for connection. This preliminary oxidation ensures uniform and controlled silver oxide layer formation, improving manufacturing precision while the oxidation can be performed under controlled conditions.
Solution Approach 2:
The patent employs oxidation processes (chemical or thermal) to form a controlled silver oxide layer on the silver sintered body. This accelerated oxidation method ensures uniform layer formation with precise control over the oxide thickness and distribution.
3Loss of substance
If a discrete silver layer is used for pressure sintering, then waste-free production is achieved, but the silver oxide surface layer must be carefully controlled
Solution Approach 1:
By separating the silver sintered body from the carrier substrate, the invention enables waste-free reuse of the silver layer while allowing independent control and optimization of the silver oxide surface layer formation process.
Solution Approach 2:
The silver oxide layer is formed in advance on the detached silver sintered body, allowing precise control over the oxide layer properties before the actual connection process, thus achieving both waste reduction and surface precision.
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 approach enables efficient and waste-free production of silver sintering agents with controlled silver oxide surfaces, facilitating robust connections between components by pressure sintering, enhancing the formation of common contact surfaces and improving the shear strength of the connections.
Implementation Method 1
a method for producing a silver sintering agent with silver oxide surfaces... sintering, detaching the formed silver sintered body
Implementation Method 2
optionally reinforcing the silver oxide layer through oxidation
Implementation Method 3
methods for connecting electronic components using metal or silver sintering pastes... pressure sintering
Data Source
AI summary
The invention relates to a method for producing a silver sintering agent in the form of a stratiform silver sintering body having silver oxide surfaces, and to the use of said agent.