OELD Power Supply via Passive Voltage Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric apparatuses with Organic Electro-Luminescence Displays (OELDs) face increased cost, space occupancy, layout difficulties, and power inefficiency due to the use of multiple DC-to-DC converters, which also lead to Electro Magnetic Interference (EMI) and higher power consumption.
Innovation Solution
The implementation of a reduced number of DC-to-DC converters and the introduction of a passive device voltage converting unit, composed of diodes, to convert direct voltages for the OELD, eliminating the need for a display DC-to-DC converter, thereby reducing size, power consumption, and cost while improving layout and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a display DC-to-DC converter is used to convert voltage for the OELD, then the OELD can receive the required third direct voltage, but the cost increases and the device occupies more space
Solution Approach 1:
The patent extracts and removes the display DC-to-DC converter from the system by directly connecting the OELD to the first DC-to-DC converter output. This eliminates the intermediate voltage conversion stage, reducing device count, space occupancy, and cost while maintaining the OELD's voltage requirements through direct connection to the main power conversion output.
Solution Approach 2:
The patent merges the power supply function for the OELD with the main DC-to-DC converter that already serves the executing units. By combining these power conversion functions into a single integrated approach, the system eliminates redundant components and reduces overall space requirements while maintaining all necessary voltage conversion capabilities.
2Reliability
If multiple DC-to-DC converters are used, then each unit can receive appropriate voltage, but the layout difficulty of the printed circuit board increases
Solution Approach 1:
The patent removes the display DC-to-DC converter from the system architecture, eliminating the complex interconnections and routing required between multiple converters. This simplification directly reduces printed circuit board layout difficulty while maintaining proper voltage distribution through the streamlined direct connection approach.
3Reliability
If a display DC-to-DC converter is included, then the OELD can be powered, but Electro Magnetic Interference (EMI) occurs
Solution Approach 1:
The patent extracts and eliminates the display DC-to-DC converter that was generating EMI. By removing this intermediate power conversion stage and directly connecting the OELD to the main DC-to-DC converter output, the system eliminates the EMI source while maintaining power supply capability through the simplified direct connection.
4Reliability
If power conversion through multiple DC-to-DC converters is performed, then voltage requirements are met, but power energy efficiency is attenuated and power consumption increases
Solution Approach 1:
The patent removes the intermediate display DC-to-DC converter from the power conversion chain, eliminating the repeated voltage conversion process. This single-stage direct connection approach maintains all necessary voltage conversion functionality while eliminating the energy losses associated with multiple conversion stages, thereby improving overall power energy efficiency.
Solution Approach 2:
The patent establishes a continuous, direct power transmission path from the first DC-to-DC converter to the OELD, eliminating the interrupted, multi-stage conversion process. This continuous action reduces energy conversion losses and improves power efficiency by maintaining uninterrupted power flow without intermediate conversion steps.
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 solution allows for a more compact, cost-effective, and energy-efficient electric apparatus with reduced EMI, as it eliminates the need for a display DC-to-DC converter, enhancing power efficiency and extending battery life in devices like digital cameras and mobile phones.
Implementation Method 1
The DC-to-DC converter converts the first direct voltage into a second direct voltage
Implementation Method 2
The greatest feature of the OELD (Organic Electro-Luminescence Display) is that the OELD is self-emissive
Data Source
AI summary
An electric apparatus having an OELD includes a DC-to-DC converter, an OELD and at least one executing unit. The DC-to-DC converter converts a first direct voltage into a second direct voltage. The OELD receives the first direct voltage. The executing unit receives the second direct voltage and thus executes a system function of the electric apparatus.