Process Chamber Idle Detection via Secure Adapter Communication
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Solution Overview
Problem
Existing semiconductor processing equipment lacks a reliable method to determine when it is in an idle state, leading to inefficient energy consumption as abatement systems may operate in low power mode unintentionally, and existing monitoring solutions can be bypassed or fooled.
Innovation Solution
An apparatus with system adapters and support adapters that monitor indicators to confirm the idle state of process chambers, communicating through a secure two-way communication protocol to ensure the abatement system operates in low power mode only when the chamber is truly idle, featuring a failsafe mechanism to prevent accidental or intentional bypassing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a simple wafer cassette presence indicator is used to signal idle state, then the abatement system can operate in low power mode, but the indication is unreliable because the equipment may be operating waferless processes such as chamber cleaning or conditioning
Solution Approach 1:
The system implements a two-way communication protocol where the system adapter monitors process chamber indicators and provides feedback to the support adapter. This feedback mechanism ensures that the abatement system only enters low power mode when genuine idle state is confirmed through multiple indicator checks, preventing premature or incorrect power down while maintaining energy efficiency.
Solution Approach 2:
The patent introduces system adapters and support adapters as intermediary components between the process chamber and the abatement system. These adapters act as mediators that translate and verify chamber state indicators through a secure communication protocol, ensuring reliable interpretation of idle state conditions without being directly fooled by simple presence indicators.
2Loss of energy
If monitoring apparatus is used to detect idle state, then energy can be conserved, but the monitoring apparatus can be accidentally or purposefully bypassed or fooled by disconnecting the monitoring apparatus from the indicator signal
Solution Approach 1:
The system implements preliminary anti-action by establishing a secure two-way communication protocol before allowing power mode transitions. The protocol includes verification mechanisms that detect and prevent bypassing attempts, ensuring that the monitoring apparatus cannot be easily fooled or disconnected without triggering safety responses that maintain proper monitoring.
Solution Approach 2:
The patent employs preliminary action by requiring multiple indicator confirmations and secure communication handshakes before the abatement system enters low power mode. This preliminary verification process ensures that the system is genuinely idle and that the monitoring apparatus has not been bypassed, preventing harmful energy waste or unsafe operations.
3Reliability
If multiple indicators are monitored through secure two-way communication protocol, then the idle state detection becomes reliable, but the device complexity increases
Solution Approach 1:
The system achieves universality by designing multi-functional adapters that can monitor multiple different indicators (wafer cassette presence, chamber pressure, temperature, RF power) through a single standardized secure communication interface. This multi-functionality allows reliable idle state detection across various process conditions without proportionally increasing device complexity, as the same adapter hardware handles multiple monitoring tasks.
Data Source
AI summary
Methods and apparatus for detecting an idle mode of processing equipment are provided herein. In some embodiments, an apparatus for monitoring a processing system may include a first system adapter for monitoring a first process chamber and determining a state thereof; and a first support adapter for communicating with the first system adapter and a first support system coupled to the first process chamber, the support adapter configured to communicate a readiness to operate the first support system at a low power mode to a controller of the support system in response to the state of the first process chamber being in an idle mode.