Transfer Device Sensor-Based Position Teaching

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Solution Overview

Problem

Existing substrate processing systems face challenges in accurately teaching the transfer position of transfer devices, leading to deviations and reduced transfer accuracy of substrates.

Innovation Solution

A transfer teaching method that involves moving the transfer device over the substrate placed on a placing location, detecting the substrate using sensors, calculating its position, and setting the transfer position based on this calculation to correct for deviations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the transfer device uses pre-taught positions for substrate transfer, then the system operation is simple, but the transfer accuracy deteriorates due to position deviations

Engineering Contradiction:
Improvesystem operation simplicityVSAvoidtransfer accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The transfer device performs self-teaching by automatically detecting the substrate position on the placing location and calculating the deviation, then setting the transfer position based on this detected information. This eliminates the need for manual teaching operations while achieving high transfer accuracy through the device's own sensor-based measurement system.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical teaching operations with an automated sensor-based detection system. The sensor detects the substrate position, and the control unit calculates the deviation and sets the transfer position automatically, substituting manual measurement and adjustment with electronic sensing and computation.

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

2Manufacturing precision

If manual teaching of transfer position is performed, then transfer accuracy can be improved, but the teaching time and operation complexity increase

Engineering Contradiction:
Improvetransfer accuracyVSAvoidteaching time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The transfer device autonomously performs position detection and teaching without requiring manual intervention. The sensor automatically detects the substrate position, the control unit calculates the deviation, and the transfer position is set automatically, eliminating time-consuming manual teaching operations while maintaining high accuracy.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent substitutes manual teaching operations with automated sensor-based detection and electronic calculation. The sensor rapidly detects substrate position, and the control unit computes the deviation and sets the transfer position instantly, replacing time-consuming manual measurement and adjustment with rapid electronic processing.

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

3Device complexity

If the transfer device does not account for position deviations, then the device complexity is low, but the transfer accuracy deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidtransfer accuracy
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent introduces a sensor-based detection system and electronic calculation to compensate for position deviations. The sensor detects the actual substrate position, the control unit calculates the deviation from the expected position, and adjusts the transfer position accordingly, using electronic measurement and computation to achieve high accuracy without complex mechanical adjustment mechanisms.

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

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 method efficiently teaches the transfer position and significantly improves the transfer accuracy of substrates by accounting for actual deviations during the teaching process.

Implementation Method 1

detecting the transfer object using a sensor of the transfer device

Methodology Applied
Scientific EffectSensor detection:

Data Source

PatentUS20250033219A1Transfer Teaching Method and Substrate Processing System
Publication Date: 2025.01.30 TOKYO ELECTRON LTD
  • US20250033219A1 patent drawing
  • US20250033219A1 patent drawing
  • US20250033219A1 patent drawing

AI summary

A transfer teaching method for teaching a transfer position of a transfer device to transfer a transfer object using the transfer device is provided. The method comprises (A) moving the transfer device with respect to the transfer object placed on a placing location and detecting the transfer object using a sensor of the transfer device, (B) calculating a position of the transfer object based on the detected transfer object, and (C) setting the transfer position based on the calculated position of the transfer object.