Integrated Optical Sensor Control for Precise Substrate Positioning
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Solution Overview
Problem
In electronic device manufacturing, robotic systems face challenges in accurately positioning substrates during transportation, leading to sub-standard product quality due to misalignment and non-uniform deposition, which existing optical sensing technologies struggle to address effectively.
Innovation Solution
An integrated sensor controller with a light source driver, demultiplexer, amplifier, and analog-to-digital converter supports multiple optical sensors, enabling precise substrate positioning detection and real-time software control, reducing manual calibration and maintenance costs while improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate optical sensors and controllers are used for substrate positioning detection, then measurement precision is improved, but device complexity increases and manual calibration maintenance costs increase
Solution Approach 1:
The patent combines multiple optical sensors and their respective controllers into a single integrated sensor controller unit. This integration maintains the measurement precision of multiple sensors while reducing device complexity by consolidating control functions into one unified system, eliminating the need for separate controllers for each sensor.
Solution Approach 2:
The integrated sensor controller is designed to handle multiple optical sensors simultaneously with a single controller unit. This multi-functional approach allows one controller to perform the positioning detection tasks that would otherwise require multiple separate controllers, thereby reducing overall system complexity while maintaining comprehensive monitoring capability.
2Measurement precision
If manual calibration and maintenance of optical sensors is performed, then measurement precision is maintained, but loss of time increases and productivity decreases
Solution Approach 1:
The integrated sensor controller incorporates automatic calibration capabilities that allow the system to self-adjust and maintain measurement precision without requiring manual intervention. This self-service function eliminates downtime associated with manual calibration while maintaining optical sensing accuracy, thereby preserving manufacturing throughput.
Solution Approach 2:
The system implements continuous feedback mechanisms that monitor sensor performance and automatically adjust calibration parameters when drift is detected. This real-time feedback loop maintains measurement precision throughout operation without requiring periodic manual calibration, thus preventing interruptions to manufacturing productivity.
3Productivity
If integrated sensor controller with automatic calibration is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple sensors and control functions into a single unified controller that includes automatic calibration capabilities. While this integration does increase device complexity at the component level, it eliminates the need for multiple separate systems and manual calibration procedures, ultimately improving productivity through automated operation and reduced downtime.
Solution Approach 2:
The integrated controller dynamically adjusts calibration parameters automatically based on real-time sensor performance data. This parameter change capability allows the system to adapt to environmental variations and sensor drift without manual intervention, maintaining high productivity while the integrated design consolidates what would otherwise require multiple separate systems.
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 integrated sensor controller enhances the precision and consistency of optical sensing, allowing for accurate substrate positioning corrections, thereby improving product yield and reducing errors in substrate placement and deposition processes.
Implementation Method 1
a light source driver to generate a driving signal
Implementation Method 2
an amplifier coupled to each of the plurality of sensors, to: receive a first signal from a first sensor
Implementation Method 3
an analog-to-digital converter to receive the second signal and generate, based on the second signal, a third signal
Data Source
AI summary
Implementations disclosed describe an integrated sensor controller comprising a sensor circuit and a logic circuit. The sensor circuit includes a light source driver to generate a driving signal, a demultiplexer to produce, using the driving signal, a plurality of output driving signals to be delivered to one of a plurality of sensors, and an amplifier to: receive a first signal from a first sensor, the first signal being associated with a first event representative of a position of a substrate within a device manufacturing machine, and generate a second signal. The sensor circuit further includes an analog-to-digital converter to receive the second signal and generate a third signal. The logic circuit includes a memory device and a processing device coupled to the memory device, the processing device to obtain based on the third signal, information about the position of the substrate.