LED Display Module Voltage Conversion for Mixed-Voltage Driving
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Solution Overview
Problem
Light-emitting diode display modules require different operating voltages for various colors, leading to complex power supply requirements and limited flexibility and space utilization due to the need for multiple power supply levels.
Innovation Solution
A light-emitting diode display module design that uses a voltage conversion block to generate an auxiliary power supply voltage ranging from a high power supply voltage to a low power supply voltage, allowing the module to be driven by a single set of power supplies, eliminating the need for multiple voltage levels and enhancing flexibility and space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power supply levels are used to match different light-emitting diode operating voltages, then the light-emitting diodes can operate at their optimal voltages, but the device complexity and power supply requirements increase
Solution Approach 1:
The patent changes the voltage parameter by introducing a voltage conversion block that converts a single high power supply voltage into multiple different voltage levels. This allows the system to operate multiple light-emitting diodes with different operating voltages (first, second, and third operating voltages) using a single power supply, thereby reducing power supply complexity while maintaining proper LED operation
Solution Approach 2:
The voltage conversion block serves as an intermediary component between the single high power supply voltage source and the multiple light-emitting diodes requiring different voltage levels. This mediator converts and provides appropriate voltage levels to each LED group, eliminating the need for multiple independent power supplies
2Reliability
If multiple power supply modules are used to provide different voltage levels, then all light-emitting diodes can be driven, but the space utilization and flexibility are reduced
Solution Approach 1:
The patent merges the function of multiple power supply modules into a single power supply module combined with a voltage conversion block. Instead of having separate power supplies for different voltage levels, the system uses one consolidated power supply that generates all required voltage levels through conversion, thereby improving space utilization and flexibility
3Reliability
If multiple power supply levels are implemented, then different color light-emitting diodes can operate optimally, but the power consumption and heat generation increase
Solution Approach 1:
The voltage conversion block operates in a self-service manner by efficiently converting the high power supply voltage to the required lower voltage levels internally within the display module. This eliminates the need for external multiple power supplies and reduces overall system power consumption and heat generation while maintaining optimal LED performance
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
The solution enables the light-emitting diode display module to operate efficiently with a single set of power supplies, reducing power consumption and heat while maintaining normal operation of diodes with different operating voltages, thereby achieving flexibility and space utilization without being limited by the number of power supplies.
Implementation Method 1
The voltage conversion block receives the high power supply voltage and the low power supply voltage to provide an auxiliary power supply voltage. The auxiliary power supply voltage ranges from the high power supply voltage to the low power supply voltage.
Data Source
AI summary
Disclosed is a light-emitting diode display module, including a first light-emitting diode, a second light-emitting diode, a third light-emitting diode, a scan block, a voltage conversion block, a first sink block, and a second sink block. An operating voltage of the first light-emitting diode is lower than that of the second and third light-emitting diodes. The voltage conversion block provides an auxiliary power supply voltage based on a high power supply voltage and a low power supply voltage. The first light-emitting diode is coupled between the scan block and the first sink block receiving the high power supply voltage and the auxiliary power supply voltage. The second light-emitting diode and the third light-emitting diode are coupled between the scan block and the second sink block receiving the high power supply voltage and the low power supply voltage.