DC-DC Converter Protection for OLED Ignition Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic electroluminescent display devices are prone to ignition and destruction when abnormal conditions occur, such as high temperatures or short-circuits, due to the lack of effective protection mechanisms in existing DC-DC converters.
Innovation Solution
A DC-DC converter system that includes a boost converter, a buck-boost converter, and an output control unit to generate and regulate power supply voltages, with temperature and current monitoring capabilities to stop output when abnormal conditions are detected, preventing further damage until the system is reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the DC-DC converter continues to operate during abnormal conditions (high temperature or short-circuit), then power supply function is maintained, but ignition and destruction of the display device occurs
Solution Approach 1:
The patent implements preliminary protective action by detecting abnormal conditions (high temperature or short-circuit) before they cause ignition or destruction. The output control unit continuously monitors the DC-DC converter state and preemptively stops power output when abnormalities are detected, preventing catastrophic failure while maintaining power supply during normal operation
Solution Approach 2:
The patent employs feedback control through the output control unit that continuously monitors the operational state of the DC-DC converter and adjusts power output accordingly. When abnormal conditions are detected via temperature sensing or short-circuit detection circuits, the feedback mechanism immediately terminates power output to prevent device destruction, thus resolving the contradiction between maintaining power supply and ensuring device safety
2Reliability
If temperature monitoring and automatic shutdown features are added to the DC-DC converter, then device safety is improved, but system complexity increases
Solution Approach 1:
The patent merges the temperature monitoring function and short-circuit detection function into the existing output control unit of the DC-DC converter. By integrating these protective functions within the control unit rather than adding separate independent systems, the patent achieves comprehensive protection while minimizing the increase in overall system complexity
Solution Approach 2:
The output control unit is designed with multi-functionality, serving both as the primary control element for power output regulation and as the integration point for temperature monitoring and short-circuit detection. This universal approach allows a single component to perform multiple functions, reducing the need for additional dedicated parts and thereby limiting the increase in device complexity
Data Source
AI summary
A direct current (DC)-DC converter for preventing ignition and destruction of an organic electroluminescent display device by not driving the current when a parameter of the organic electroluminescent display device is abnormal, an organic electroluminescent display device including the DC-DC converter, and a method of driving the organic electroluminescent display device.