Integrated Wax Coating and Heating for Wafer Mounting Blocks
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Solution Overview
Problem
The existing wafer polishing process is inefficient due to separate processes for wax application and heating, leading to increased time and reduced productivity.
Innovation Solution
A wax coating apparatus with a vacuum chuck integrated with a heating plate that simultaneously applies and heats wax on a block, using a rotating shaft and wax nozzle, allowing for simultaneous wax coating and heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate processes are used for wax coating and heating, then each process can be performed independently with dedicated equipment, but the total process time increases and productivity decreases
Solution Approach 1:
The patent combines the wax coating function and heating function into a single integrated apparatus. The heating plate serves dual purposes: it heats the block during wax coating and also provides vacuum suction through integrated flow paths. This merging of functions eliminates the need for separate wax coating and heating processes, reducing total process time while maintaining process stability through coordinated operation of both functions in one system.
Solution Approach 2:
The heating plate is designed as a multi-functional component that simultaneously performs heating, vacuum suction, and wax distribution support. The vacuum flow paths are embedded within the heating plate structure, allowing it to serve both thermal processing and material handling functions. This multi-functionality increases productivity by eliminating sequential operations while maintaining reliability through a unified control system.
2Reliability
If multiple separate units are used for wax coating, heating, and wafer adhering, then each unit can be optimized for its specific function, but the device complexity increases and process time increases
Solution Approach 1:
The patent merges the wax coating unit and heating unit into a single integrated apparatus. The heating plate contains embedded vacuum flow paths that connect to a vacuum source, allowing the same component to perform both heating and vacuum suction functions. The wax nozzle is positioned to spray wax onto the block while it is held by vacuum suction, eliminating the need for separate transfer mechanisms between units.
Solution Approach 2:
The heating plate serves multiple functions: it provides thermal energy for wax adhesion, creates vacuum suction through embedded flow paths to hold the block, and supports the wax coating operation. This multi-functionality reduces device complexity by eliminating separate units for each function while maintaining reliable performance of all operations through a unified structure.
3Manufacturing precision
If the block is moved between separate wax coating unit and heating unit, then each process can be performed in dedicated equipment, but the moving time increases and productivity decreases
Solution Approach 1:
The patent combines the wax coating zone and heating zone into a single operational space. The block remains stationary on the heating plate while the wax nozzle sprays wax onto it, and the heating plate simultaneously applies heat. The vacuum flow paths ensure the block is securely held during this combined process, eliminating the need to move the block between separate units and reducing process time while maintaining wax adhesion quality.
Solution Approach 2:
The heating plate acts as an intermediary platform that integrates both wax coating and heating functions. It provides a stable surface for block placement, delivers thermal energy for wax adhesion, and uses embedded vacuum flow paths to secure the block during processing. This intermediary structure eliminates the need for block transfer between separate units, reducing movement time while ensuring proper wax adhesion through controlled heating.
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 integration reduces process time and enhances productivity by simplifying the wafer mounting process.
Implementation Method 1
the block is heated in the wax heating unit to increase the adhesion of the wax coated to the block
Implementation Method 2
a vacuum chuck in which a vacuum flow path providing vacuum pressure is embedded
Data Source
AI summary
A wax coating apparatus for wafer mounting of the embodiment includes: a vacuum chuck in which a vacuum flow path providing vacuum pressure is embedded; a heating plate mounted on an upper side of the vacuum chuck and having holes and grooves connected to the vacuum flow path of the vacuum chuck in order to suck a block to which a wafer is adhered; a rotating shaft connected to a lower side of the vacuum chuck; a driving motor for rotating the rotating shaft; and a wax nozzle provided to be spaced apart from the upper side of the vacuum chuck, wherein the heating plate may be operated so as to heat the block while the wax nozzle sprays wax on the block.