Multi-Electrode Field Emission Device Single Power Source Voltage Division
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Solution Overview
Problem
Conventional field emission devices require multiple driving power sources, making them complex and difficult to control, especially when trying to manage voltage for gate electrodes effectively.
Innovation Solution
A multi-electrode field emission device with a single driving power source is designed, utilizing a voltage division unit with divider resistors to apply partial voltages to gate electrodes and a current control unit to manage cathode current, allowing for efficient control of field emission using a single power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple driving power sources are used to control field emission device, then voltage control for gate electrodes is achieved, but device complexity increases
Solution Approach 1:
The single power source voltage is segmented into multiple voltage levels using divider resistors connected to different gate electrodes. This allows each gate electrode to receive an appropriate voltage level for effective electron emission control without requiring multiple independent power sources.
Solution Approach 2:
Divider resistors act as intermediary elements between the single power source and multiple gate electrodes. These resistors divide the input voltage and distribute it to different gate electrodes, enabling voltage control functionality without direct connection from multiple power sources.
2Adaptability or versatility
If multiple driving power sources are used for gate and anode, then independent voltage control is achieved, but device structure becomes complex
Solution Approach 1:
The voltage from a single power source is segmented into different levels for the cathode, gate electrodes, and anode using a network of divider resistors. This segmentation provides independent voltage control for each electrode while maintaining a single power source configuration.
Solution Approach 2:
The single power source is designed to serve multiple functions by providing different voltage levels to different electrodes through the divider resistor network. This universal power source replaces what would traditionally require multiple specialized power sources.
3Device complexity
If single power source is used, then device structure is simplified, but voltage distribution to multiple electrodes becomes difficult
Solution Approach 1:
Divider resistors serve as intermediary components that automatically distribute the single power source voltage to multiple electrodes at appropriate levels. This passive voltage distribution mechanism simplifies the power source configuration while maintaining ease of voltage distribution.
Solution Approach 2:
The divider resistor network automatically distributes voltage to different electrodes based on the resistance values, without requiring active control or complex distribution circuitry. The system self-regulates the voltage distribution through the inherent properties of the resistor network.
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 simplifies the device structure and enables effective control of field-emission current, allowing for reliable operation with a single power source, including negative high voltage driving scenarios where the anode is grounded.
Implementation Method 1
a voltage division unit configured to have one or more divider resistors and to divide a voltage applied from a power source unit using the divider resistors
Implementation Method 2
Field emission devices are devices that enable electrons to be emitted from an emitter formed on a cathode electrode by commonly applying an electric field to the cathode electrode
Data Source
AI summary
A field emission device and a method of driving the multi-electrode field emission device having a single driving power source are disclosed. The field emission device includes a cathode electrode, one or more gate electrodes, a voltage division unit, and a power source unit. The cathode electrode is figured such that at least one emitter is formed thereon. The gate electrodes are disposed between an anode electrode and the cathode electrode, and each have one or more openings through which electrons emitted from the emitter can pass. The voltage division unit has one or more divider resistors, and divides a voltage applied from the power source unit using the divider resistors and then applies partial voltages to the one or more gate electrodes. The power source unit includes a single power source, and applies the voltage to the voltage division unit.