Polishing Pad Groove Design for Fluid Retention and Byproduct Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Industrial polishing processes require polishing pads that can either retain polishing fluid or effectively discharge byproducts, depending on the specific needs of different applications, as existing pads often fail to meet these dual requirements efficiently.
Innovation Solution
A polishing pad with a polishing layer and grooves having open and closed ends in the peripheral region, designed to retain polishing fluid while allowing byproducts to be effectively discharged, by utilizing the inertial force to prevent fluid loss and facilitate byproduct removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the polishing pad uses a conventional structure without special grooves, then the structure is simple and easy to manufacture, but it cannot effectively retain polishing fluid or discharge byproduct
Solution Approach 1:
The polishing pad is segmented into multiple functional zones: a central polishing region and a peripheral discharge region separated by grooves. This segmentation allows the pad to simultaneously retain fluid in the central area and discharge byproduct in the peripheral area, resolving the contradiction between fluid retention capability and structural simplicity.
Solution Approach 2:
Different regions of the polishing pad are given different functional properties through groove configuration. The central region maintains fluid retention capability while the peripheral region with grooves enables byproduct discharge. This local differentiation allows the pad to meet multiple performance requirements without overall structural complexity.
2Productivity
If the polishing pad is designed to retain polishing fluid, then polishing efficiency improves, but byproduct discharge becomes difficult leading to contamination
Solution Approach 1:
The pad surface is segmented into a central fluid retention zone and a peripheral discharge zone using grooves. This spatial segmentation enables the pad to retain polishing fluid in the central area for high polishing efficiency while simultaneously discharge byproduct through the peripheral grooves, preventing contamination.
Solution Approach 2:
The grooves act as intermediary channels that separate the fluid retention function from the byproduct discharge function. These grooves mediate between the conflicting requirements of fluid retention and byproduct removal, allowing both to occur simultaneously without interference.
3Productivity
If the polishing pad uses deep grooves for byproduct discharge, then byproduct removal efficiency improves, but polishing fluid is lost and cleaning frequency increases
Solution Approach 1:
The groove depth is locally optimized: deep enough in the peripheral discharge region to effectively remove byproduct, but controlled to prevent excessive polishing fluid loss. This local quality differentiation allows the pad to achieve high byproduct discharge efficiency while minimizing fluid loss and reducing cleaning frequency.
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
The polishing pad achieves higher polishing rates, reduces fluid usage, and enhances cleaning efficiency while preventing contamination by effectively managing both fluid retention and byproduct discharge, thus improving productivity and reducing costs.
Implementation Method 1
designed to retain polishing fluid while allowing byproducts to be effectively discharged, by utilizing the inertial force to prevent fluid loss and facilitate byproduct removal
Data Source
AI summary
A polishing pad is provided. The polishing pad, suitable for polishing an object, includes a polishing layer and at least one groove. The polishing layer has a central region and a peripheral region surrounding the central region. The at least one groove is disposed in the polishing layer, wherein the at least one groove has two ends both located in the peripheral region, wherein the two ends include an open end and a closed end.