EUV Target Replacement Trolley Linear Mechanism

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Solution Overview

Problem

Current EUV light generation devices face challenges in extending operation time and increasing power due to limitations in target material capacity and debris management, leading to difficulties in replacing the target generation device, especially with increased weight and complexity.

Innovation Solution

A target generation device replacement system utilizing a trolley with a linear movement mechanism and positioning portion to facilitate the detachment and reattachment of the target generation device to the chamber, allowing for easier handling and replacement without manual lifting, even with increased tank capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the target material capacity is increased to extend operation time, then the operation duration is improved, but the weight of the target generation device increases making manual handling difficult

Engineering Contradiction:
Improveoperation timeVSAvoidweight of target generation device
Core Design Contradiction:
Duration of action of moving objectVSWeight of moving object

Solution Approach 1:

The system divides the target generation device into separable components: the target material supply device and the chamber. The target material supply device can be detached and replaced independently, allowing the heavy target material tank to be exchanged without moving the entire chamber assembly. This segmentation enables extended operation time through larger target material capacity while avoiding the need to manually handle the complete heavy assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A linear movement mechanism serves as an intermediary device between the operator and the heavy target generation device. This mechanism automates the positioning and attachment/detachment operations, eliminating the need for manual lifting and handling of the heavy device. The intermediary mechanism bridges the gap between the operator's limited capacity and the heavy device's weight, enabling safe and efficient replacement operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the target generation device is designed for easy replacement, then the ease of operation is improved, but the device complexity increases due to additional mechanisms

Engineering Contradiction:
Improveease of replacementVSAvoidcomplexity of replacement system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The target generation device is designed with self-aligning features and automatic positioning capabilities. The linear movement mechanism automatically positions the target material supply device relative to the chamber, and the attachment mechanism self-secures the connection without requiring complex manual alignment procedures. This self-service approach simplifies the replacement operation while minimizing the need for overly complex positioning and alignment mechanisms.

Inventive Principle:
Principle #25Self-service

3Device complexity

If manual handling is used for replacement, then the device complexity is reduced, but the productivity decreases due to operational downtime

Engineering Contradiction:
Improvesimplicity of systemVSAvoidreplacement speed
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system replaces manual mechanical handling with an automated linear movement mechanism that provides controlled positioning and movement. This substitution enables faster and more precise replacement operations compared to manual handling, reducing operational downtime. The mechanism includes automated attachment and detachment functions that operate more quickly and consistently than manual procedures, thereby improving productivity while maintaining reasonable system complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS10698316B2Target generation device replacement trolley, target generation device replacement system, and target generation device replacement method
Publication Date: 2020.06.30 GIGAPHOTON INC
  • US10698316B2 patent drawing
  • US10698316B2 patent drawing
  • US10698316B2 patent drawing

AI summary

A target generation device replacement trolley includes: A. a linear movement mechanism configured to hold a target generation device configured to output a target material and linearly move the target generation device in a direction in which the target material is output; and B. a positioning portion configured to position the linear movement mechanism relative to a mounting part of a chamber on which the target generation device is mounted. The target generation device replacement trolley further includes C. a drive unit configured to drive the linear movement mechanism. The target generation device replacement trolley further includes D. a mount configured to hold the linear movement mechanism. The positioning portion is provided to the mount.