Stretchable Film Mounting for Semiconductor Element Density
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Solution Overview
Problem
Conventional methods for mounting semiconductor elements on substrates face challenges such as misalignment, contact issues, and limited density due to rigid mounting techniques, which affect the accuracy and efficiency of semiconductor device manufacturing.
Innovation Solution
A method involving a stretchable film is used to mount semiconductor elements by stretching it to align and space elements at a specific distance, then releasing to achieve a closer mounting distance, allowing for higher density and reduced contact issues during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If rigid mounting techniques are used to mount semiconductor elements on substrates, then the mounting process is simple and stable, but the mounting accuracy is limited and contact issues occur between elements
Solution Approach 1:
The patent employs a stretchable film that can dynamically change its state between stretched and relaxed configurations. During mounting, the film is stretched to expand the spacing between semiconductor elements, preventing contact. After mounting, the film relaxes to its original state, bringing elements closer together to achieve higher density while maintaining proper spacing. This dynamic adaptation resolves the contradiction between preventing contact and achieving high density mounting.
Solution Approach 2:
The patent changes the physical state of the mounting substrate by stretching the film to alter the spacing parameters between mounting positions. When stretched, the film increases the distance between adjacent mounting positions to prevent element contact. When relaxed, it reduces the distance to achieve higher element density. This parameter change allows the system to optimize spacing based on different mounting stages, improving both accuracy and density.
2Productivity
If semiconductor elements are mounted closer together to increase density, then higher density production is achieved, but contact between elements increases causing manufacturing issues
Solution Approach 1:
The stretchable film provides dynamic spacing adjustment that adapts to different manufacturing stages. During the mounting process, the stretched state maintains larger spacing to prevent element contact and ensure reliability. After mounting is complete, the film relaxes to bring elements closer together, achieving high production density. This dynamic behavior allows the system to simultaneously achieve both high density and reliable contact prevention at different stages.
Solution Approach 2:
The patent applies preliminary stretching of the film before mounting elements to pre-establish optimal spacing that prevents contact during the mounting process. This preliminary action ensures that elements are positioned at safe distances apart during handling and bonding operations. After mounting, the film is relaxed to achieve the final high-density configuration, thus preventing contact issues while enabling high density production.
3Manufacturing precision
If the distance between semiconductor elements is reduced to increase mounting density, then higher density is achieved, but misalignment and contact issues arise
Solution Approach 1:
The patent utilizes parameter changes in the film's physical state to control element spacing. When the film is stretched, the spacing between mounting positions increases, providing precise control and preventing misalignment during element placement. After mounting, the film is relaxed to reduce spacing and increase mounting density. This parameter change mechanism allows the system to achieve both precise spacing control and high mounting density at different stages of the manufacturing process.
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 enhances mounting accuracy, reduces contact between elements, and enables higher density semiconductor device production with improved manufacturing efficiency by utilizing the elasticity of the stretchable film to manage stress and prevent damage.
Implementation Method 1
stretching a stretchable film against an elastic force into a stretched state... The stretchable film is released from the stretched state by using the elastic force of the stretchable film
Data Source
AI summary
A method of mounting semiconductor elements, including stretching a stretchable film against an elastic force into a stretched state and disposing a plurality of semiconductor elements in predetermined regions on the stretchable film in the stretched state. Each of the predetermined regions have a predetermined group of semiconductor elements spaced apart from one other at a first distance. The stretchable film is released from the stretched state by using the elastic force of the stretchable film. The first distance between adjacent semiconductor elements in each of the predetermined regions at the time of disposing the semiconductor elements on the stretchable film in the stretched state is reduced to a predetermined second distance of a predetermined mounting distance after releasing the stretchable film from the stretched state.