MEMO Driving Voltage Adjustment for Temperature Stability
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Solution Overview
Problem
Microelectromechanical optical devices, such as interferometric modulators, face performance degradation and reliability issues due to increased mechanical stress and organic material deterioration caused by unsuitable driving voltage, especially under varying ambient temperatures and prolonged operation.
Innovation Solution
A driving voltage adjusting device comprising a parameter generator (temperature sensor or timer) and a driving device that outputs an adjusting voltage based on generated parameters, using look-up tables to maintain optimal voltage levels according to ambient temperature or operating time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed driving voltage is applied to the microelectromechanical optical device, then the device structure is simple, but the device performance degrades and reliability decreases under varying ambient temperatures and prolonged operation
Solution Approach 1:
The patent implements dynamic driving voltage adjustment by transitioning from a fixed voltage source to a controllable voltage source that adapts to changing operating conditions. The driving voltage is dynamically modified based on ambient temperature and operating time parameters to maintain optimal device performance and reliability
Solution Approach 2:
The patent changes the driving voltage parameter according to ambient temperature and operating time. By adjusting the voltage magnitude as a variable parameter rather than a constant, the system compensates for environmental effects and material deterioration, thereby improving reliability without requiring complex structural modifications
2Reliability
If the driving voltage is increased to maintain performance under high temperature, then the performance stability improves, but the mechanical stress and material deterioration increase
Solution Approach 1:
The patent employs parameter changes by adjusting the driving voltage magnitude based on ambient temperature and operating time. The voltage is increased only when necessary to compensate for environmental effects, and decreased when conditions allow, thereby maintaining performance stability while minimizing mechanical stress and material deterioration
Solution Approach 2:
The system implements feedback control by monitoring ambient temperature and operating time parameters, then adjusting the driving voltage accordingly. This closed-loop approach ensures that voltage is optimized to maintain performance without excessive increases that would cause mechanical stress and material degradation
3Adaptability or versatility
If the driving voltage is adjusted frequently to adapt to environmental changes, then the adaptability improves, but the device complexity and control difficulty increase
Solution Approach 1:
The patent achieves temperature adaptability through parameter changes in the driving voltage based on ambient temperature and operating time. By using a controllable voltage source with programmable adjustment rules, the system adapts to environmental conditions without requiring complex hardware modifications
Solution Approach 2:
The system performs preliminary action by pre-establishing voltage adjustment rules and relationships between voltage, temperature, and time. This allows the control system to automatically adjust voltage based on predetermined criteria, reducing the need for complex real-time decision-making and simplifying control implementation
Data Source
AI summary
A driving voltage adjusting device for a microelectromechanical optical (MEMO) device. The adjusting device comprises a parameter generator and a driving device. The driving device outputs an adjusting driving voltage to the MEMO device to a parameter from the parameter generator.