Modular CMP Layout for Faster Substrate Loading and Polishing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chemical mechanical polishing (CMP) systems are limited by substrate loading and unloading operations, leading to reduced throughput density and inefficient use of manufacturing floor space.
Innovation Solution
A modular CMP system with a one-to-one-to-one relationship between carrier support modules, carrier loading stations, and polishing stations, allowing for high throughput density and customizable configurations to optimize substrate handling and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-platen CMP system is used to increase substrate processing capacity, then productivity is improved, but substrate throughput is limited by loading and unloading operations
Solution Approach 1:
The system is divided into multiple independent polishing modules (first polishing module, second polishing module, third polishing module) that can operate simultaneously. Each module has its own polishing platen and can process substrates independently, allowing parallel processing without sequential loading/unloading bottlenecks.
Solution Approach 2:
The polishing modules are designed with universal carrier heads that can hold substrates and transfer them between different polishing platens. The carrier heads serve multiple functions: holding substrates, transferring between modules, and positioning for polishing, eliminating the need for separate loading and unloading stations.
2Area of stationary object
If polishing stations are integrated into a single system to conserve manufacturing floor space, then area utilization is improved, but substrate handling complexity increases
Solution Approach 1:
The system is divided into modular polishing modules that can be independently configured and arranged. Each module contains essential polishing components (platen, carrier head, polishing pad), allowing the system to be scaled and customized without increasing overall complexity.
Solution Approach 2:
The system utilizes vertical arrangement of polishing platens stacked above each other, transitioning from a horizontal layout to a vertical configuration. This three-dimensional arrangement maximizes floor space utilization while keeping substrate transfer paths short and simple through the use of vertically moving carrier heads.
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
Enhances substrate processing efficiency by minimizing substrate transfer bottlenecks and enabling flexible module arrangements for improved throughput and space utilization.
Implementation Method 1
Material is removed across the material layer surface of the substrate in contact with the polishing pad through a combination of chemical and mechanical activity which is provided by the polishing fluid and a relative motion of the substrate and the polishing pad
Implementation Method 2
a substrate is retained in a carrier head that presses the backside of the substrate towards a rotating polishing pad
Data Source
AI summary
Embodiments herein include high throughput density chemical mechanical polishing (CMP) modules and customizable modular CMP systems formed thereof. In one embodiment, a polishing module features a carrier support module, a carrier loading station, and a polishing station. The carrier support module features a carrier platform and one or more carrier assemblies. The one or more carrier assemblies each comprise a corresponding carrier head suspended from the carrier platform. The carrier loading station is used to transfer substrates to and from the carrier heads. The polishing station comprises a polishing platen. The carrier support module, the substrate loading station, and the polishing station comprise a one-to-one-to-one relationship within each of the polishing modules. The carrier support module is positioned to move the one or more carrier assemblies between a substrate polishing position disposed above the polishing platen and a substrate transfer position disposed above the substrate loading station.