DC/DC Converter Voltage Conversion for LED Drivers
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Solution Overview
Problem
Existing light source driving methods in liquid crystal display apparatuses suffer from high power consumption due to energy losses in voltage converting processes, which affects the efficiency and eco-friendliness of the systems.
Innovation Solution
A method and module that utilize a DC/DC converter with a transformer and switching elements to generate a second DC voltage, which is the difference between the driving voltage and a first DC voltage, reducing energy losses and improving efficiency by optimizing the voltage conversion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple voltage converting processes are performed in the LED driver, then the driving voltage can be generated, but energy loss and power consumption increase
Solution Approach 1:
The patent extracts only the necessary voltage conversion function from the complex power supply system. By using a DC/DC converter that directly converts the first DC voltage to the required driving voltage without intermediate conversion steps, the invention eliminates unnecessary energy loss while maintaining the essential voltage generation capability for the LED units.
Solution Approach 2:
The invention changes the voltage parameter efficiently by using a DC/DC converter with a transformer to directly transform the first DC voltage into the required driving voltage. This parameter change approach allows for precise voltage control with minimal energy loss, avoiding the multiple conversion processes that would otherwise be required.
2Adaptability or versatility
If multiple voltage converting processes are used to generate driving voltage, then voltage can be adjusted, but power consumption increases
Solution Approach 1:
The DC/DC converter maintains continuous and efficient voltage conversion from the first DC voltage to the driving voltage. By ensuring continuous operation of the converter with optimized transformer coupling, the system achieves reliable voltage adjustment while minimizing energy consumption compared to intermittent or multi-stage conversion processes.
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 approach significantly reduces power consumption and improves energy efficiency in the light source module, leading to a more sustainable and cost-effective driving solution for liquid crystal display apparatuses.
Implementation Method 1
the DC/DC converter may include a transformer having a first coil disposed at a primary side and a second coil disposed at a secondary side
Data Source
AI summary
A method of driving a light source includes receiving an alternating current (“AC”) voltage from outside, generating a first direct current (“DC”) voltage based on the AC voltage, generating a second DC voltage, corresponding to a difference between a driving voltage of a light source part and the first DC voltage, based on the first DC voltage, and outputting a sum of the first DC voltage and the second DC voltage to the light source part.