OLED Power Supply Segmentation for Voltage Stability
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Solution Overview
Problem
Conventional power supply designs for OLED displays face instability and inefficiency due to shared transformers for +12V and +24V voltage outputs, leading to unpredictable results, blurred screens, and reduced service life, as they fail to adapt to the fast response speed and changing current requirements of OLED technology.
Innovation Solution
A driving power supply apparatus with separate transformer modules for +12V and +20V voltage outputs, controlled by a timing control module to ensure stable and independent voltage generation, preventing interference and adapting to the fast response characteristics of OLED screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a shared transformer is used for both +12V and +24V voltage outputs, then the device complexity is reduced and manufacturing cost is lowered, but the power output stability deteriorates and unpredictable results occur
Solution Approach 1:
The patent divides the power supply system into separate transformer modules for different voltage outputs. Specifically, it uses independent transformers for +12V and +24V outputs, preventing mutual interference and ensuring stable power delivery to the OLED screen and other components.
2Ease of manufacture
If a shared transformer is used for both +12V and +24V voltage outputs, then the ease of manufacture is improved, but the power loss increases and output efficiency decreases
Solution Approach 1:
The patent implements separate transformer modules for different voltage outputs, which isolates the power conversion paths and reduces energy loss from mutual interference. This segmentation improves overall power efficiency while maintaining manufacturing feasibility through modular design.
3Device complexity
If a shared transformer is used for both +12V and +24V voltage outputs, then the device complexity is reduced, but the working stability deteriorates and service life is reduced
Solution Approach 1:
The patent uses independent transformer modules for different voltage outputs, which eliminates mutual interference and ensures stable operation throughout the device lifecycle. This segmentation approach simplifies process design by removing the need for strict cross-regulation while improving long-term reliability.
4Ease of operation
If the same timing sequence is used for both +12V and +24V voltage outputs, then the ease of operation is improved, but the picture quality deteriorates and blurred screens occur
Solution Approach 1:
The patent implements dynamic timing control for different voltage outputs using separate transformer modules. This allows independent optimization of power delivery timing for each voltage rail, ensuring that power reaches the OLED screen at the precise moment needed for optimal display quality without causing blur.
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 provides stable and efficient power output, improving picture quality and extending the service life of OLED screens by ensuring independent voltage generation and synchronized start sequences, thus addressing the instability and inefficiency issues of traditional designs.
Implementation Method 1
the first transformer module is configured to convert the HVDC into a first voltage and supplies to the motherboard, and the second transformer module is configured to convert the HVDC into a second voltage then supplies to the motherboard and the OLED screen
Data Source
AI summary
The present invention discloses a driving power supply apparatus for OLED. Wherein it comprises a power board connecting to a motherboard and a OLED screen, the motherboard comprises a standby circuit, a timing control module, a first and second transformer modules and a PFC circuit, the standby circuit connects to the timing control module and the motherboard, the timing control module connects to the PFC circuit, the motherboard and the first and second transformer modules, which connect to the motherboard and the PFC circuit. The isolation of two voltages, fulfills stability requirements of the power supplied to OLED, improves its picture quality; the timing control module will not light up the OLED screen until both switch and enable signals are stable simultaneously. This has changed the traditional power switch sequence, and made the power supply adapt to OLED's fast response characters.