Light-Emitting Unit Drive Control for Power and Thermal Reliability
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Solution Overview
Problem
The reliability of light-emitting units in electronic devices is compromised under high power consumption and high temperature conditions, leading to potential abnormalities.
Innovation Solution
Incorporating a driving circuit and a comparator that monitors and compares detected power consumption, current, or temperature values with set values to adjust the driving signal accordingly, thereby maintaining optimal operating conditions and reducing reliability risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If light-emitting units operate under high power consumption and high temperature conditions, then brightness and performance are improved, but reliability deteriorates due to abnormality risks
Solution Approach 1:
The patent implements a feedback mechanism where a sensor detects temperature or power consumption values from light-emitting units and feeds this information to a controller. The controller compares detected values with reference values and adjusts driving signals accordingly, creating a closed-loop control system that prevents reliability degradation while maintaining performance
Solution Approach 2:
The patent dynamically changes operating parameters by adjusting driving signals based on detected temperature or power consumption levels. When parameters exceed reference values, the controller modifies driving conditions to bring parameters back within safe ranges, resolving the contradiction between high power operation and reliability
2Use of energy by moving object
If light-emitting units operate under high temperature conditions, then luminous efficiency is improved, but reliability deteriorates due to thermal degradation
Solution Approach 1:
The patent uses temperature sensors to continuously monitor the thermal state of light-emitting units and feeds this information to the controller. The controller compares detected temperature values with reference values and adjusts driving signals to maintain optimal operating conditions, preventing thermal degradation while preserving luminous efficiency
Solution Approach 2:
The patent implements preventive protection by detecting temperature rises before they cause damage. The controller proactively adjusts driving signals when temperature approaches reference values, cushioning against potential thermal degradation before it occurs and maintaining reliable operation
Data Source
AI summary
Disclosed is an electronic device, including a plurality of light-emitting units, a driving circuit, and a first comparator. The driving circuit is electrically connected to the light-emitting units. The first comparator is electrically connected to the driving circuit. The first comparator receives one of a detected power consumption value and a detected current value from the light-emitting units. The first comparator compares the one of the detected power consumption value and the detected current value with a set value and obtains a relationship therebetween to transmit a first signal. The driving circuit drives the light-emitting units according to the first signal.