Non-Contact Poling for Semiconductor Dipole Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Direct-contact poling methods for piezoelectric or ferroelectric materials in semiconductor devices can cause destruction and result in long-term degradation due to incomplete polarization and temperature-related issues, especially when dipoles are not uniformly aligned.
Innovation Solution
A non-contact poling method using a field source, such as a magnetic or light field, is applied to the intermediate layer without direct contact, allowing for uniform polarization of dipoles at either the wafer or device level, which can be performed at room temperature and is more efficient than traditional direct-contact methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If direct-contact poling method is used to align dipoles in piezoelectric or ferroelectric material, then dipole alignment is achieved, but destruction and long-term degradation occur due to incomplete polarization and temperature-related issues
Solution Approach 1:
The patent replaces the mechanical direct-contact poling method with a non-contact electromagnetic field-based poling method. Instead of applying physical pressure and heat through contact, the invention uses electromagnetic fields to align dipoles throughout the material volume, eliminating mechanical stress and thermal degradation while achieving uniform dipole alignment and improving device reliability
Solution Approach 2:
The patent changes the poling parameters from high temperature and mechanical contact to electromagnetic field application at or near room temperature. This parameter change allows dipole alignment without the destructive effects of high temperature and mechanical stress, resolving the contradiction between alignment quality and device stability
2Ease of manufacture
If direct-contact poling is applied to achieve polarization, then some dipole alignment is achieved, but destruction and degradation result from incomplete polarization and temperature issues
Solution Approach 1:
The invention substitutes the mechanical contact-based poling system with an electromagnetic field-based system. This replacement maintains manufacturing simplicity while eliminating the harmful effects of mechanical stress, heat generation, and incomplete polarization that cause destruction and degradation in traditional methods
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary between the poling source and the piezoelectric/ferroelectric material. This intermediary enables energy transfer for dipole alignment without direct mechanical contact, avoiding the harmful factors of contact-based methods while maintaining ease of manufacture
3Productivity
If traditional direct-contact poling methods are used, then dipole orientation is attempted, but efficiency is reduced due to temperature-related issues and incomplete polarization
Solution Approach 1:
The patent replaces thermal-mechanical poling with electromagnetic field-based poling, eliminating the need for high temperature control. This substitution dramatically improves poling efficiency by enabling dipole alignment at or near room temperature while achieving complete polarization throughout the material
Solution Approach 2:
The invention changes the operating temperature parameter from high temperature to room temperature, and changes the energy delivery mechanism from thermal-mechanical to electromagnetic. This parameter change improves productivity by eliminating temperature-related inefficiencies and achieving complete polarization faster
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 alleviates destruction and degradation issues, enabling uniform dipole alignment and efficient polarization of multiple semiconductor devices without the need for high temperatures, thus improving the stability and efficiency of the piezoelectric or ferroelectric layers.
Implementation Method 1
A non-contact poling method using a field source, such as a magnetic or light field
Implementation Method 2
A non-contact poling method using a field source, such as a magnetic or light field
Data Source
AI summary
The present disclosure provides a method for manufacturing a semiconductor device. The method for manufacturing a semiconductor device includes the following operations. An intermediate layer is formed in the semiconductor device. A field is applied to the intermediate layer, wherein the field source does not contact the semiconductor device. The polarity of the intermediate layer is changed by the field to form a desired dipole orientation in the intermediate layer.