Heated Ceramic Faceplate Thermal Bridge for Seal Protection
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Solution Overview
Problem
Existing process chamber components lack sufficient temperature control, which is essential for advanced semiconductor manufacturing processes like chemical vapor deposition and atomic layer deposition, as they require precise temperature management for improved device fabrication.
Innovation Solution
A ceramic faceplate with a heater layer and electrode layer, featuring a distribution portion with apertures for gas passage and a bridge that acts as a thermal choke to limit heat transfer, allowing for elevated temperatures while maintaining seal integrity by keeping the coupling portion at a lower temperature, thus preventing thermal degradation of seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the faceplate is heated to high temperatures for improved deposition processes, then deposition quality and manufacturing efficiency are improved, but thermal degradation of seals occurs
Solution Approach 1:
The faceplate is divided into distinct functional zones: a heated distribution portion for deposition processes and a cooler coupling portion for seal mounting. This segmentation allows different temperature regimes in different regions of the same component, enabling high-temperature processing while protecting seals from thermal degradation.
Solution Approach 2:
A bridge structure acts as a thermal intermediary between the heated distribution portion and the coupling portion. This bridge limits heat transfer to the coupling portion, maintaining a temperature gradient that protects seals while allowing the distribution portion to reach elevated temperatures for improved deposition.
2Manufacturing precision
If uniform heating is applied across the entire faceplate, then temperature control for deposition is improved, but thermal degradation of seals occurs
Solution Approach 1:
The faceplate implements local quality by providing different thermal conditions to different regions. The distribution portion receives concentrated heating for precise temperature control during deposition, while the coupling portion remains cooler to protect seals. This localized thermal management resolves the contradiction between uniform heating benefits and seal protection.
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 faceplate achieves improved temperature control, enabling high-temperature processing up to 500°C, enhancing deposition processes while protecting seals from thermal degradation, thereby improving semiconductor device manufacturing efficiency.
Implementation Method 1
A heater is disposed within the heater layer to heat the body
Implementation Method 2
A bridge surrounds the distribution portion and couples the distribution portion to a coupling portion... The bridge portion is a thermal choke which limits heat transfer from the heater to the coupling portion
Data Source
AI summary
An apparatus for distributing a gas within a process chamber is disclosed. The apparatus has a body formed from a distribution portion surrounded by a coupling portion. A heater is disposed within the distribution portion to heat the body to an elevated temperature. A bridge extends between the coupling portion and the distribution portion. The bridge limits heat transfer between the distribution portion and the coupling portion.