Integrated Potential Sensor Circuit With Switched Electrode Plating Isolation
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Solution Overview
Problem
Existing potential measuring apparatuses face signal characteristic deterioration due to increased wiring capacity during electrode plating processing, which affects the accuracy of potential measurements.
Innovation Solution
A semiconductor apparatus with a reference potential generating unit, read electrode, amplifier, potential supply unit, and breaker, where the breaker is controlled to block potential supply during measurement and enable plating processing by switching between different potentials, all integrated on a single substrate to prevent signal deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a configuration for electrode plating processing is provided in the potential measuring apparatus, then plating processing can be performed during manufacturing, but the wiring capacity increases and signal characteristics deteriorate during potential measurement
Solution Approach 1:
The apparatus is divided into distinct functional segments: a plating processing section with plating power supply and a potential measurement section with measurement power supply. The breaker selectively isolates these segments, allowing plating processing capability while preventing interference with measurement signals. This segmentation enables independent optimization of each function without mutual interference.
Solution Approach 2:
The breaker is configured to block the plating power supply connection before potential measurement begins. This preliminary isolation prevents the plating wiring capacity from affecting measurement signal characteristics. The system prepares the electrical configuration in advance to ensure measurement accuracy by removing potential interference sources.
2Measurement precision
If the breaker blocks the potential supply during measurement, then signal characteristics are maintained, but plating processing cannot be performed
Solution Approach 1:
The breaker provides dynamic switching between two operational states: blocking the plating power supply during measurement and enabling it during plating processing. This dynamic control allows the system to adapt its electrical configuration based on the current operation mode, maintaining measurement precision when needed while enabling plating processing when required.
Solution Approach 2:
The potential supply unit and associated wiring are designed to serve dual functions: supporting electrode plating processing when the breaker is in the enabled state and being isolated during potential measurement. This multi-functionality allows a single configuration to accommodate both manufacturing operations without requiring separate dedicated circuits for each function.
3Device complexity
If all components are integrated on a single substrate, then device complexity is reduced, but electrostatic breakdown risk increases during plating processing
Solution Approach 1:
The amplifier and its power supply connection are extracted from the general plating circuit path and placed on the same substrate with protective isolation. The breaker specifically isolates the amplifier from high-voltage plating potentials, removing the amplifier from the harmful electrical environment while maintaining integration benefits. This extraction protects sensitive components from electrostatic breakdown risks.
Solution Approach 2:
The breaker acts as an intermediary element between the plating power supply and the integrated circuit components on the substrate. It mediates the electrical connection, allowing plating processing to proceed while preventing direct exposure of sensitive components to high voltages that could cause electrostatic breakdown. This intermediary protection enables both integration and reliability.
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 configuration effectively prevents signal characteristic deterioration while allowing for plating processing, ensuring accurate potential measurements by isolating the potential supply during measurement and providing necessary potentials during plating.
Implementation Method 1
The breaker is a Field Effect Transistor (FET) switch and is controlled to be turned off at the time of the potential measurement to block the supply of the potential from the potential supply unit at a position close to the amplifier and is controlled to be turned on when the plating processing is performed so as to supply the predetermined potential from the potential supply unit.
Implementation Method 2
The breaker can be a diode of which a cathode is connected to the potential supply unit and an anode is connected to the amplifier, and at the time of the potential measurement, it is possible that the potential supply unit supplies a first predetermined potential and blocks the supply of the potential from the potential supply unit at a position close to the amplifier
Implementation Method 3
a reference potential generating unit and a reference potential electrode that supply a reference potential to liquid filled into a container
Implementation Method 4
a read electrode and an amplifier that read a signal from the liquid... the signal read by the amplifier is amplified and output
Implementation Method 5
a potential supply unit that fills plating solution instead of the liquid in the container and supplies a predetermined potential to the reference potential electrode and the read electrode when plating processing is performed on the reference potential electrode and the read electrode
Data Source
AI summary
The present disclosure relates to a semiconductor apparatus and a potential measuring apparatus capable of preventing deterioration in signal characteristics due to parasitic capacitance caused by providing a configuration for realizing an electrode plating process when an electrode and an amplifier are provided on the same substrate. When a power source supplies a potential necessary for plating processing and a breaker reads a signal from liquid, and an amplifier amplifies and outputs the signal, the power source required for the plating processing is blocked with respect to the electrode. This is applicable to the potential measuring apparatus.